CN213625222U

CN213625222U - Prestressed anchorage utensil subassembly

Info

Publication number: CN213625222U
Application number: CN202022082863.1U
Authority: CN
Inventors: 罗家旺; 罗家元
Original assignee: Liuzhou Guanglu Prestressed Intelligent Equipment Manufacturing Co ltd
Current assignee: Liuzhou Guanglu Prestressed Intelligent Equipment Manufacturing Co ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-07-06
Anticipated expiration: 2030-09-22

Abstract

The utility model relates to an ground tackle technical field, concretely relates to prestressed anchorage utensil subassembly, include: the tension end anchorage device is provided with an anchor hole, and a clamping piece matched with the anchor hole is arranged in the anchor hole; the fixing and detaching device comprises a detaching anchor device and a detaching ring, wherein the detaching anchor device is provided with penetrating holes corresponding to the number and the positions of the anchor holes; the disassembly anchor is composed of a first body and a second body, and connecting threads are integrally formed on the outer wall of the first body; the outer wall of the second body is provided with a threaded hole communicated with the penetrating hole, and the threaded hole is in threaded connection with a fastening bolt; the disassembly ring is in threaded connection with the first body. The utility model discloses add fixed disassembly piece, can increase the fastness that stretch-draw in-process stretch-draw end ground tackle and steel strand wires are connected, also be convenient for simultaneously will stretch-draw end ground tackle dismantle after stretch-draw finishes, the modern design, the fit in-service use is comparatively laborsaving and convenient.

Description

Prestressed anchorage utensil subassembly

Technical Field

The utility model relates to an ground tackle technical field, concretely relates to prestressed anchorage utensil subassembly.

Background

In the construction process of a bridge, the problem that an external tensioning device applies prestress to steel strands in the bridge is generally solved, so that the rigidity of the bridge is improved, and the vibration and elastic deformation of the bridge are reduced. When prestress is applied to the steel strand, tools such as an anchorage device and a jack are generally used, as shown in figure 1, the anchorage device is divided into a fixed end anchorage device and a tensioning end anchorage device, the fixed end anchorage device is directly buried in concrete and is a permanent anchorage assembly; the tensioning end anchorage is mostly arranged at the front end of the telescopic column of the jack, and the tensioning end anchorage keeps the anchoring state of the steel strand and generates tension to the steel strand along with the stretching of the jack in the tensioning process. Of course, anchor holes are formed in both the fixed end anchorage device and the tensioning end anchorage device, clamping pieces are arranged in the anchor holes, and the fixed end anchorage device and the tensioning end anchorage device are in the prior art. In addition, the jack is typically a hollow jack disposed between the fixed end anchorage and the tensioning end anchorage. In the prior art, after the steel strand is tensioned, the tensioning end anchorage device and the jack need to be taken down. However, in the process of tensioning the steel strand, the clamping piece in the anchor hole of the anchorage device at the tensioning end is tightly attached between the anchor hole and the steel strand, so that the anchorage device at the tensioning end is difficult to take down. The worker often needs to strike the tension end anchorage with the aid of an external tool, such as a hammer, to remove the tension end anchorage. However, the hammer is used for knocking the anchorage device to damage the anchorage device, and the service life of the anchorage device is influenced. Secondly, when the hammer is swung, the steel strand at other positions is easily touched, and the worker is easily injured.

In addition, when installing the clamping pieces on the tensioning end anchorage device, 2 clamping pieces are connected together by using an adhesive tape or an elastic band, then the clamping pieces are sleeved on the steel strand, and finally the clamping pieces are abutted into the anchor holes of the tensioning end anchorage device by using hollow steel pipes one by one, so that the operation mode is complicated and the working efficiency is low.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prestressed anchorage utensil subassembly to utilize outside instrument to produce the problem of damage to the ground tackle when taking off the stretch-draw end ground tackle among the solution prior art, and the operating mode is comparatively loaded down with trivial details, problem that work efficiency is low when installing the clamping piece on the stretch-draw end ground tackle among the prior art.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a pre-stressed anchor assembly comprising: the tensioning end anchorage device is provided with an anchor hole, and the anchor hole is in a circular truncated cone shape; a clamping piece matched with the anchor hole is arranged in the anchor hole; the fixed dismounting part comprises a dismounting anchor and a dismounting ring, and the dismounting anchor is provided with penetrating holes corresponding to the number and the positions of the anchor holes; the disassembly anchor is composed of a first body and a second body which are integrally formed, the outer diameter of the first body is smaller than that of the tensioning-end anchor, and connecting threads are integrally formed on the outer wall of the first body; the outer diameter of the second body is not less than that of the tensioning end anchorage device, a threaded hole communicated with the penetrating hole is formed in the outer wall of the second body, and a fastening bolt is connected with the threaded hole in a threaded manner; the disassembly ring is in threaded connection with the first body.

Preferably, the outer diameter of the second body, the outer diameter of the disassembling ring and the outer diameter of the tensioning end anchorage are all equal.

Preferably, the length of the disassembly ring is equal to the length of the first body.

Preferably, the number of the threaded holes is 4.

Preferably, the outer wall of the disassembly ring is welded with a disassembly handle.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model is additionally provided with the fixed dismounting part which can be used for sleeving all clamping pieces on the steel strand into the anchor hole of the anchorage device of the stretching end in one step, thus improving the fixing efficiency of the clamping pieces; in addition, the fixed dismounting part is fixed on the steel strand by the fastening bolt and is abutted against the tensioning end anchorage device, so that the connection firmness of the tensioning end anchorage device and the steel strand in the tensioning process can be improved, and the axial movement of the tensioning end anchorage device in the tensioning process is avoided. Secondly, when dismantling the stretch-draw end ground tackle, rotate the dismantlement ring on the fixed dismantlement piece, dismantle the ring and produce thrust towards dismantling the end anchor utensil motion to it, under the effect of this thrust, stretch-draw end ground tackle moves towards the jack, makes the separation of stretch-draw end ground tackle and clamping piece, and then realizes the dismantlement of stretch-draw end ground tackle, can avoid producing the damage to stretch-draw end ground tackle, extension stretch-draw end ground tackle life-span of using.

(2) The utility model discloses a welding has the dismantlement handle on the dismantlement ring, rotates the rotation that the dismantlement handle can realize dismantling the ring, can realize dismantling the rotation of ring with the help of external device, and is comparatively laborsaving and convenient.

(3) The utility model discloses a solve the problem that exists when stretch-draw end ground tackle dismantles among the prior art and for the starting point, combine the condition among the in-service use process, add fixed disassembly piece, fixed disassembly piece can increase the fastness that stretch-draw end ground tackle and steel strand wires are connected among the stretch-draw process, also be convenient for simultaneously will stretch-draw end ground tackle dismantle after stretch-draw finishes, the modern design, the actual use that closes, it is comparatively laborsaving and convenient.

Drawings

FIG. 1 is a schematic drawing of a prior art bridge strand tension;

fig. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is an exploded view of FIG. 2;

FIG. 4 is a cross-sectional view of FIG. 3;

description of the main reference numerals:

100. a tension end anchorage; 101. an anchor eye; 102. a clip;

200. fixing the dismounting member; 201. disassembling the anchorage device; 201a, a first body; 201b, a second body; 2011. penetrating and placing the hole; 2012. connecting threads; 2013. a threaded hole; 2014. fastening a bolt; 202. disassembling the circular ring; 2021. disassembling the handle;

300. steel strand wires; 400. a bridge; 500. a fixed end anchorage device; 600. a jack.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the technical personnel in the field without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., appear based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case to those skilled in the art.

Referring to fig. 1 to 4, a prestressed anchorage assembly includes a tension end anchorage 100 and a fixed dismounting member 200, in which:

an anchor hole 101 is formed in the tensioning end anchorage device 100, and the anchor hole 101 is in a circular truncated cone shape; a clamping piece 102 matched with the anchor hole 101 is arranged in the anchor hole; the clip 102 is provided with anti-slip threads (not shown) on its inner wall, which can increase the friction between the clip 102 and the steel strand 300, as is known in the art.

The fixed dismounting member 200 comprises a dismounting anchorage 201 and a dismounting ring 202, wherein the dismounting anchorage 201 is provided with penetrating holes 2011 corresponding to the number and the positions of the anchor holes 101; the disassembly anchor 201 is composed of a first body 201a and a second body 201b which are integrally formed, the outer diameter of the first body 201a is smaller than that of the tensioning-end anchor 100, and a connecting thread 2012 is integrally formed on the outer wall of the first body 201 a; the outer diameter of the second body 201b is not smaller than that of the tensioning end anchor 100, threaded holes 2013 communicated with the penetrating holes 2011 are formed in the outer wall of the second body 201b, and preferably, 4 threaded holes 2013 are formed. The threaded hole 2013 is in threaded connection with a fastening bolt 2014; the detaching ring 202 is screwed on the first body 201a, and it is understood that the inner wall of the detaching ring 202 is provided with a thread line which is screwed with the connecting thread 2012. In addition, a detaching handle 2021 is welded to the outer wall of the detaching ring 202.

In this embodiment, the outer diameter of the second body 201b, the outer diameter of the removal ring 202 and the outer diameter of the tension end anchor 100 are all equal. The length of the detachment ring 202 is equal to the length of the first body 201 a.

When the bridge is used, the fixed end anchorage 500 is pre-embedded in the concrete of the bridge 400, the jack 600 is of a hollow structure, and the inner end of the jack is abutted against the fixed end anchorage 500. The tension end anchorage 100 is sleeved on the steel strand 300 through the anchor holes 101, and it is not obvious here that one anchor hole 101 corresponds to one steel strand 300. The 2 clips 102 are connected together with rubber bands or tape and one is sleeved on each steel strand 300. Then, the fixing and detaching member 200 is sleeved on the steel strand 300 through the through hole 2011, and the end of the first body 201a abuts against the clip 102. The fixed disassembling part 200 is pushed towards the jack 600 by the disassembling handle 2021, the clamping piece 102 is abutted to the anchor hole 101 by the fixed disassembling part 200, then the fastening bolt 2014 is screwed, the inner end of the fastening bolt 2014 is abutted to the steel strand 300 in the penetrating hole 2011, and then the steel strand 300 is tensioned by the jack 600.

After tensioning is finished, the jack 600 contracts, the disassembling handle 2021 is utilized to rotate the disassembling ring 202, the disassembling ring 202 moves towards the direction of the tensioning end anchorage device 100 and generates thrust to the tensioning end anchorage device 100, the tensioning end anchorage device 100 moves towards the jack 600 under the action of the thrust, and the tensioning end anchorage device 100 is separated from the clamping piece 102; the fastening bolt 2014 is then loosened, the inner end of the fastening bolt 2014 is separated from the steel strand 300, and the fixed release member 200 and the tension end anchor 100 can then be removed from the steel strand 300.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. A pre-stressed anchor assembly, comprising:

the tensioning end anchorage device is provided with an anchor hole, and the anchor hole is in a circular truncated cone shape; a clamping piece matched with the anchor hole is arranged in the anchor hole;

the fixed dismounting part comprises a dismounting anchor and a dismounting ring, and the dismounting anchor is provided with penetrating holes corresponding to the number and the positions of the anchor holes; the disassembly anchor is composed of a first body and a second body which are integrally formed, the outer diameter of the first body is smaller than that of the tensioning-end anchor, and connecting threads are integrally formed on the outer wall of the first body; the outer diameter of the second body is not less than that of the tensioning end anchorage device, a threaded hole communicated with the penetrating hole is formed in the outer wall of the second body, and a fastening bolt is connected with the threaded hole in a threaded manner; the disassembly ring is in threaded connection with the first body.

2. The pre-stressed anchor assembly according to claim 1, wherein the second body outer diameter, the removal ring outer diameter and the tension end anchor outer diameter are all equal.

3. The prestressed anchorage assembly of claim 1, wherein the disassembly ring has a length equal to the length of the first body.

4. The prestressed anchorage assembly of claim 1, wherein there are 4 threaded holes.

5. The prestressed anchorage assembly of claim 1, wherein a removal handle is welded to an outer wall of said removal ring.