CN212505861U - Steel strand anti-slip device - Google Patents

Abstract

The application relates to a steel strand wires antiskid takes off device belongs to steel strand wires prestressed anchorage technical field, include: the tensioning anchor comprises an anchor plate and a clamping piece, wherein the anchor plate is provided with a plurality of anchor holes for penetrating the steel strand, and the steel strand is anchored on the anchor plate through the clamping piece; the anti-slip anchor is positioned at the tail end of the tensioning anchor and comprises a base plate and a P-shaped anchor, a plurality of anchor holes for penetrating through the steel strands are formed in the base plate, and the steel strands are anchored on the base plate through the P-shaped anchor. The device utilizes the tensioning anchorage device and the anti-skidding anchorage device to anchor the steel strand together, increases the anchoring force of the steel strand, and ensures that the steel strand has good anti-skidding capacity under the conditions of low stress, wind vibration effect, corrosion of a wire opening of the clamping piece, impact generation of a structure and the like.

Description

Steel strand anti-slip device

Technical Field

The application relates to the technical field of steel strand prestress anchoring, in particular to a steel strand anti-slip device.

Background

The prestress technology is that before a component is installed and used, pressure is applied to a part which can be pulled apart after the component is subjected to external force in advance to promote the component to generate prestress so as to counteract tensile stress generated by the external force. In civil engineering construction, since steel wires or steel strands have high tensile strength, in order to exert the function of high-strength reinforcing steel bars in a reinforced concrete structure, it is necessary to pre-stress the reinforcing steel bars in the member or structure. Prestressed concrete is that before the structure bears load, internal stress is artificially introduced into concrete or reinforced concrete in advance to counteract the stress generated under the use load, so that the concrete member does not crack, delays cracking or reduces the width of crack cracking under the use load. The composite material is widely applied to various fields of building and reinforcing engineering and has good effect.

The construction field of highway bridges and the like is the most widely applied place of the prestress technology. In production practice, the steel strand tension in the prestressed component is to connect the steel strand head with the tension machine, and the common connection mode is an anchor method. In some special structures, the normal use of the anchorage is ensured, both the normative during the installation and use of the anchorage and the rational structure of the anchorage are required, so that the components of the anchorage are well matched to achieve the purpose of applying prestress.

However, with the development of the prestressing technology, the requirements for the prestressed anchorage device are higher and higher in the civil engineering construction process. The existing prestressed tensioning end anchorage has a certain defect. In the traditional prestressed anchorage device, a steel strand can slip and fall off under the conditions of low stress, wind vibration action, corrosion of a wire opening of a clamping piece, impact generated by structural object collision and the like in the tensioning process, so that the steel strand and the clamping piece are not in complete contact to generate sliding. The generation of the phenomenon of wire sliding causes the connection among all parts of the anchorage device to be insecure, so that the applied prestress is far lower than the designed prestress value, and the service efficiency of the anchorage device is seriously reduced.

At present, the existing steel strand anti-slip device utilizes a spring to prop against a clamping piece, an anchor backing plate presses the spring to prevent the clamping piece from loosening, and the device only can ensure that the clamping piece does not retreat and loosen. Once the clamping piece service time rusts for a long time, the clamping piece becomes poor with the steel strand wires interlock, and the steel strand wires still probably make clamping piece and steel strand wires appear relative slip under striking and the effect of wind vibration, cause the anticreep device to become invalid. Therefore, it is necessary to design a steel strand anti-slip device.

Disclosure of Invention

The embodiment of the application provides a steel strand anti-slipping device to solve the problem that in the prior art, a prestressed anchorage device easily causes the sliding phenomenon because the steel strand is not in complete contact with a clamping piece.

The embodiment of the application provides a steel strand wires antiskid device that takes off, includes:

the tensioning anchor comprises an anchor plate and a clamping piece, wherein a plurality of anchor holes for penetrating the steel strand are formed in the anchor plate, and the steel strand is anchored on the anchor plate through the clamping piece;

the anti-skidding ground tackle, the anti-skidding ground tackle is located the tail end of stretch-draw ground tackle, the anti-skidding ground tackle includes backing plate and P type ground tackle, set up a plurality of anchor eyes that are used for passing the steel strand wires on the backing plate, the steel strand wires are anchored on the backing plate through P type ground tackle.

In some embodiments: the tensioning anchor and the anti-skid anchor are arranged at intervals, and a pushing device for pushing the anti-skid anchor is arranged between the tensioning anchor and the anti-skid anchor.

In some embodiments: the pushing device comprises an outer lining steel pipe and an inner lining steel pipe, the outer lining steel pipe is sleeved with the inner lining steel pipe, and a limiting mechanism for adjusting the extension length of the inner lining steel pipe is arranged between the outer lining steel pipe and the inner lining steel pipe.

In some embodiments: the limiting mechanism comprises internal threads arranged on the inner wall of the outer lining steel pipe and external threads arranged on the outer wall of the inner lining steel pipe, and the outer lining steel pipe and the inner lining steel pipe are connected through the internal threads and the external threads.

In some embodiments: and through holes for rotating the outer lining steel pipe and the inner lining steel pipe are formed in the side walls of the outer lining steel pipe and the inner lining steel pipe, and the through holes are used for penetrating handles to drive the outer lining steel pipe and the inner lining steel pipe to rotate relatively.

In some embodiments: the bottom of the outer lining steel pipe is provided with a first positioning plate, the first positioning plate is provided with a first through hole matched with the anchor plate, and the first positioning plate is sleeved on the periphery of the anchor plate;

and a second positioning plate is arranged at the top of the lining steel pipe, and a second through hole penetrating into the steel strand is formed in the second positioning plate.

In some embodiments: the first positioning plate is connected with the outer lining steel pipe in a welded mode, and the second positioning plate is connected with the inner lining steel pipe in a welded mode.

In some embodiments: the jacking device is characterized in that the jacking device is a straight-through jack, a tensioning cylinder of the straight-through jack abuts against a tensioning anchorage device, a jacking cylinder of the straight-through jack abuts against an anti-skid anchorage device, and the steel strand is located in a hole of the straight-through jack.

In some embodiments: and the P-shaped anchorage is pressed on the steel strand.

In some embodiments: the P-shaped anchorage device comprises a P-shaped extrusion sleeve and an extrusion spring, and the extrusion spring is arranged in a hole of the P-shaped extrusion sleeve.

The beneficial effect that technical scheme that this application provided brought includes:

the embodiment of the application provides a steel strand anti-slip device, which is provided with a tensioning anchor and an anti-slip anchor. The tensioning anchor is provided with an anchor plate and a clamping piece, a plurality of anchor holes for penetrating through the steel strand are formed in the anchor plate, and the steel strand is anchored on the anchor plate through the clamping piece; the anti-slip anchor is positioned at the tail end of the tensioning anchor, the anti-slip anchor is provided with a backing plate and a P-type anchor, a plurality of anchor holes for penetrating the steel strand are formed in the backing plate, and the steel strand is anchored on the backing plate through the P-type anchor. The device utilizes the tensioning anchorage device and the anti-skidding anchorage device to anchor the steel strand together, increases the anchoring force of the steel strand, and ensures that the steel strand has good anti-skidding capacity under the conditions of low stress, wind vibration effect, corrosion of a wire opening of the clamping piece, impact generation of a structure and the like.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Reference numerals:

10-tensioning anchorage, 11-anchor plate, 12-clamping piece, 20-antiskid anchorage, 21-backing plate, 22-P type anchorage, 30-pushing device, 31-outer lining steel pipe, 32-inner lining steel pipe, 33-second positioning plate, 34-first positioning plate, 40-steel strand and 50-anchor beam.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a steel strand anti-slipping device, which can solve the problem that in the prior art, a prestressed anchorage device easily causes the sliding due to the incomplete contact between a steel strand and a clamping piece.

Referring to fig. 1, an embodiment of the present application provides a steel strand anti-slip device, including:

the tensioning anchor device 10 abuts against the anchor beam 50, the tensioning anchor device 10 comprises an anchor plate 11 and clamping pieces 12, a plurality of anchor holes for allowing the steel strands 40 to penetrate through are formed in the anchor plate 11, and the steel strands 40 are anchored on the anchor plate 11 through the clamping pieces 12.

The antiskid anchor 20 is positioned at the tail end of the tensioning anchor 10, the antiskid anchor 20 comprises a backing plate 21 and a P-shaped anchor 22, a plurality of anchor holes used for penetrating through the steel strands 40 are formed in the backing plate 21, the number of the anchor holes in the backing plate 21 is the same as that of the anchor holes in the anchor plate 11, the anchor holes are in one-to-one correspondence, and the steel strands 40 are anchored on the backing plate 21 through the P-shaped anchor 22.

This device utilizes stretch-draw ground tackle 10 and anti-skidding ground tackle 20 jointly to steel strand 40 anchor, has increased steel strand 40's anchoring force, ensures that steel strand 40 has good anti-skidding ability under the circumstances such as low stress, wind vibration effect, clamping piece silk mouth corrosion, structure striking production impact.

In some alternative embodiments: referring to fig. 1, the embodiment of the present application provides a steel strand anti-slip device, in which a tension anchor 10 and an anti-slip anchor 20 are arranged at an interval, and a pushing device 30 for pushing the anti-slip anchor 20 is arranged between the tension anchor 10 and the anti-slip anchor 20.

The jacking device 30 controls the distance between the tensioning anchor 10 and the anti-skid anchor 20 through telescopic motion, after the tensioning anchor 10 and the anti-skid anchor 20 are respectively anchored with the steel strand 40, one end of the jacking device 30 is abutted against the tensioning anchor 10 or the anchor beam 50, and the other end is abutted against the anti-skid anchor 20. By adjusting the length of the pushing device 30, the pushing device 30 pushes the anti-slip anchor 20 to move towards the tail end of the steel strand 40, so as to provide tension for the sliding direction of the steel strand 40.

In some alternative embodiments: referring to fig. 1, an embodiment of the present application provides a steel strand anti-slip device, where a pushing device 30 of the device includes an outer lining steel pipe 31 and an inner lining steel pipe 32, the outer lining steel pipe 31 is sleeved with the inner lining steel pipe 32, and a limiting mechanism for adjusting an extending length of the inner lining steel pipe 31 is disposed between the outer lining steel pipe 31 and the inner lining steel pipe 32.

The limiting mechanism comprises an internal thread arranged on the inner wall of the outer lining steel pipe 31 and an external thread arranged on the outer wall of the inner lining steel pipe 32, and the outer lining steel pipe 31 and the inner lining steel pipe 32 are connected through the internal thread and the external thread. The outer lining steel pipe 31 and the inner lining steel pipe 32 are connected through internal threads and external threads, the extension length of the inner lining steel pipe 32 is adjusted through the selective pair rotation of the outer lining steel pipe 31 and the inner lining steel pipe 32, and the tension of the anti-skidding anchorage device 20 and the steel strands 40 is adjusted.

In some alternative embodiments: referring to fig. 1, the embodiment of the present invention provides a steel strand anti-slip device, wherein through holes (not shown) for rotating an outer lining steel pipe 31 and an inner lining steel pipe 32 are formed in the side walls of the outer lining steel pipe 31 and the inner lining steel pipe 32 of the device, and the through holes are used for inserting a handle (not shown) to drive the outer lining steel pipe 31 and the inner lining steel pipe 32 to rotate relatively. The through holes are convenient for adjusting the lengths of the outer lining steel pipes 31 and the inner lining steel pipes 32, and the installation and adjustment efficiency of the outer lining steel pipes 31 and the inner lining steel pipes 32 is improved.

In some alternative embodiments: referring to fig. 1, the embodiment of the present application provides a steel strand anti-slip device, where a first positioning plate 34 is disposed at the bottom of an outer lining steel pipe 31 of the device, the first positioning plate 34 is provided with a first through hole adapted to an anchor plate 11, and the first positioning plate 34 is sleeved around the anchor plate 11; the outer lining steel pipe 31 is sleeved on the periphery of the anchor plate 11 through the first positioning plate 34, and the first positioning plate 34 is used for positioning the outer lining steel pipe 31 to ensure that the outer lining steel pipe 31 is coaxially connected with the anchor plate 11. Meanwhile, the first positioning plate 34 abuts against the anchor beam 50, so that the local stress of the outer lining steel pipe 31 and the anchor beam 50 is reduced, and the extrusion deformation of the anchor beam 50 is prevented.

The top of the lining steel pipe 32 is provided with a second positioning plate 33, the second positioning plate 33 is provided with second through holes penetrating all the steel strands 40, the second positioning plate 33 is abutted to the backing plate 20, the local stress of the lining steel pipe 32 and the backing plate 20 is reduced, and the backing plate 20 is prevented from being extruded and deformed.

The first positioning plate 34 is welded with the outer lining steel pipe 31, and the second positioning plate 33 is welded with the inner lining steel pipe 32.

In some alternative embodiments: the embodiment of the application provides a steel strand anti-slipping device, the pushing device 30 of the device is a through jack, a tensioning cylinder of the through jack abuts against a tensioning anchor 10, a jacking cylinder of the through jack abuts against an anti-slipping anchor 20, and a steel strand 40 is positioned in a through jack hole.

The penetrating jack drives the penetrating jack to do telescopic motion through hydraulic oil, and the penetrating jack pushes the anti-skidding anchorage device 20 to move towards the tail end of the steel strand 40 through the telescopic motion, so that tension is provided for the sliding direction of the steel strand 40.

Referring to fig. 1, the present embodiment provides a steel strand anti-slip device, in which a P-type anchor 22 is pressed against a steel strand 40. The P-anchor 22 includes a P-type extrusion sleeve and an extrusion spring mounted within a hole of the P-type extrusion sleeve. When the P-shaped anchorage device 21 is in compression joint with the steel strand, the P-shaped extrusion sleeve and the extrusion spring are in compression joint on the steel strand 40 by using the extrusion machine, and the P-shaped extrusion sleeve and the extrusion spring are wrapped on the steel strand 40 to prevent the steel strand 40 from sliding.

Principle of operation

The embodiment of the application provides a steel strand anti-slip device, which is provided with a tensioning anchor 10 and an anti-slip anchor 20. The tension anchor 10 is provided with an anchor plate 11 and a clamping piece 12, a plurality of anchor holes for penetrating the steel strand 40 are formed in the anchor plate 11, and the steel strand 40 is anchored on the anchor plate 11 through the clamping piece 12. The antiskid anchorage device 20 is positioned at the tail end of the tensioning anchorage device 10, the antiskid anchorage device 20 is provided with a backing plate 21 and a P-type anchorage device 22, a plurality of anchor holes for penetrating through the steel strands 40 are formed in the backing plate 21, and the steel strands 40 are anchored on the backing plate 21 through the P-type anchorage device 22.

A pushing device 30 for pushing the anti-skid anchorage device 20 is arranged between the tension anchorage device 10 and the anti-skid anchorage device 20, the pushing device 30 controls the distance between the tension anchorage device 10 and the anti-skid anchorage device 20 through telescopic motion, after the tension anchorage device 10 and the anti-skid anchorage device 20 are respectively anchored with the steel strand 40, one end of the pushing device 30 is abutted against the tension anchorage device 10 or the anchor beam 50, and the other end is abutted against the anti-skid anchorage device 20. By adjusting the length of the pushing device 30, the pushing device 30 pushes the anti-slip anchor 20 to move towards the tail end of the steel strand 40, so as to provide tension for the sliding direction of the steel strand 40.

The device utilizes the tensioning anchorage device 10, the anti-skid anchorage device 20 and the pushing device 30 to anchor the steel strand 40 together, increases the anchoring force of the steel strand 40, and ensures that the steel strand 40 has good anti-skid capacity under the conditions of low stress, wind vibration effect, corrosion of a wire opening of a clamping piece, impact generated by structure object impact and the like.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be 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 by those of ordinary skill in the art as appropriate.

It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a steel strand wires antiskid device that takes off which characterized in that includes:

the tensioning anchor (10) comprises an anchor plate (11) and a clamping piece (12), wherein a plurality of anchor holes for penetrating through the steel strand (40) are formed in the anchor plate (11), and the steel strand (40) is anchored on the anchor plate (11) through the clamping piece (12);

anti-skidding ground tackle (20), anti-skidding ground tackle (20) are located the tail end of stretch-draw ground tackle (10), anti-skidding ground tackle (20) are including backing plate (21) and P type ground tackle (22), set up a plurality of anchor eyes that are used for passing steel strand wires (40) on backing plate (21), steel strand wires (40) are anchored on backing plate (21) through P type ground tackle (22).

2. The steel strand anti-slip device according to claim 1, wherein:

the tensioning anchor (10) and the anti-skid anchor (20) are arranged at intervals, and a pushing device (30) for pushing the anti-skid anchor (20) is arranged between the tensioning anchor (10) and the anti-skid anchor (20).

3. The steel strand anti-slip device according to claim 2, wherein:

the pushing device (30) comprises an outer lining steel pipe (31) and an inner lining steel pipe (32), the outer lining steel pipe (31) is sleeved with the inner lining steel pipe (32), and a limiting mechanism for adjusting the extending length of the inner lining steel pipe (32) is arranged between the outer lining steel pipe (31) and the inner lining steel pipe (32).

4. The steel strand anti-slip device according to claim 3, wherein:

the limiting mechanism comprises an internal thread arranged on the inner wall of the outer lining steel pipe (31) and an external thread arranged on the outer wall of the inner lining steel pipe (32), and the outer lining steel pipe (31) is connected with the inner lining steel pipe (32) through the internal thread and the external thread.

5. The steel strand anti-slip device according to claim 3, wherein:

the side walls of the outer lining steel pipe (31) and the inner lining steel pipe (32) are provided with through holes for rotating the outer lining steel pipe (31) and the inner lining steel pipe (32), and the through holes are used for penetrating handles to drive the outer lining steel pipe (31) and the inner lining steel pipe (32) to rotate relatively.

6. The steel strand anti-slip device according to claim 4, wherein:

the bottom of the outer lining steel pipe (31) is provided with a first positioning plate (34), the first positioning plate (34) is provided with a first through hole matched with the anchor plate (11), and the first positioning plate (34) is sleeved on the periphery of the anchor plate (11);

the top of inside lining steel pipe (32) is equipped with second locating plate (33), set up the second through-hole that penetrates steel strand wires (40) on second locating plate (33).

7. The steel strand anti-slip device according to claim 6, wherein:

the first positioning plate (34) is connected with the outer lining steel pipe (31) in a welded mode, and the second positioning plate (33) is connected with the inner lining steel pipe (32) in a welded mode.

8. The steel strand anti-slip device according to claim 2, wherein:

the jacking device (30) is a straight-through jack, a tensioning cylinder of the straight-through jack abuts against a tensioning anchor (10), a jacking cylinder of the straight-through jack abuts against an anti-skidding anchor (20), and the steel strand (40) is located in a hole of the straight-through jack.

9. The steel strand anti-slip device according to claim 1, wherein:

the P-shaped anchorage device (22) is pressed on the steel strand.

10. The steel strand anti-slip device according to claim 9, wherein:

the P-shaped anchorage device (22) comprises a P-shaped extrusion sleeve and an extrusion spring, and the extrusion spring is arranged in a hole of the P-shaped extrusion sleeve.

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