CN215442722U

CN215442722U - Anchoring device for unbonded steel strand

Info

Publication number: CN215442722U
Application number: CN202120945802.5U
Authority: CN
Inventors: 李金岭; 李振启; 郝永虎; 张型中; 梁玉
Original assignee: Kaifeng Qiangli Group Maogu Technology Co ltd
Current assignee: Kaifeng Qiangli Group Maogu Technology Co ltd
Priority date: 2021-05-06
Filing date: 2021-05-06
Publication date: 2022-01-07
Anticipated expiration: 2031-05-06

Abstract

The utility model discloses an anchoring device for an unbonded steel strand, which comprises a base, wherein a first groove is formed in the middle of the upper end face of the base, an anchor block is arranged in the first groove, a sliding block is horizontally arranged on the side face of the anchor block, a second groove is formed in the side face of the first groove, the other end of the sliding block is positioned in the second groove, a first through hole is formed in one end, positioned in the second groove, of the sliding block, a positioning sliding rod is arranged in the second groove and connected with the upper side face and the lower side face of the second groove through the first through hole, a first spring is sleeved on the part, positioned at the lower end of the sliding block, of the positioning sliding rod, a clamping component is arranged at the upper end of the anchor block, a conical hole is formed in the anchor block, and an opening is formed in the lower end of the base. The method is simple to operate, low in cost and capable of well performing adaptive adjustment on the prestress of the steel strand.

Description

Anchoring device for unbonded steel strand

Technical Field

The utility model belongs to the technical field of steel strand anchoring, and particularly relates to an anchoring device for an unbonded steel strand.

Background

The steel strand is a stranded steel cable formed by a plurality of high-strength steel wires, is subjected to stabilization treatment, and is suitable for prestressed concrete or similar purposes, because the prestressed steel strand has the advantages of high strength, good relaxation performance, straightening when unfolded and the like, the steel strand is commonly used in the construction of a reinforced concrete structure of a bridge so as to increase the cracking resistance and the bearing capacity of the bridge.

The prestress steel strand reinforcing technology integrates the advantages of an external prestress reinforcing technology and a high-strength steel strand reinforcing technology, is a novel reinforcing technology, can give full play to the high-strength characteristic of a steel strand, but the existing steel strand anchoring device cannot adaptively adjust the prestress of the steel strand, and the prestress value of the steel strand is changed due to the creep of a stratum, the relaxation of steel, the change of a structure and the like, so that an anchoring system is damaged, and the safety and the stability of buildings and bridges cannot be ensured.

Based on the defects in the prior art, the utility model discloses an anchoring device for an unbonded steel strand, which is characterized in that sliding blocks are arranged at two ends of an anchor block through the matching between the anchor block and a base, so that the anchor block can slide relatively in the base, the prestress of the steel strand can be adjusted adaptively, and the change of the prestress value of the steel strand caused by stratum creeping, steel loosening, structural change and the like is avoided.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide an anchoring device for an unbonded steel strand.

The utility model provides the following technical scheme:

the utility model provides an anchor for unbonded steel strand wires, includes the base, the up end middle part of base is equipped with first recess, be equipped with the anchor block in the first recess, anchor block side is improved level and is equipped with the slider, be equipped with the second recess on the side of first recess, the other end of slider is located in the second recess, the one end that the slider is located the second recess is equipped with first through-hole, be equipped with the location slide bar in the second recess, the location slide bar is connected through the upper and lower side of first through-hole with the second recess, the location slide bar is located the part cover of slider lower extreme has first spring, the upper end of anchor block is equipped with clamping subassembly, be equipped with the bell mouth in the anchor block, the lower extreme of base is equipped with the opening.

Preferably, the lower end of the base is further provided with a reinforcing sleeve, a third through hole is formed in the reinforcing sleeve, the third through hole is communicated with the first groove through the opening, and the third through hole, the opening and the conical hole are arranged on the same axis.

Preferably, the number of the sliding blocks is four, and the four sliding blocks are respectively positioned in the middle of the left side surface, the right side surface, the front side surface and the rear side surface of the anchor block.

Preferably, each sliding block is provided with two or more first through holes, and each second groove is internally provided with the same number of positioning sliding rods correspondingly.

Preferably, a slide way is arranged on the side face, far away from the anchor block, of the second groove, and one end, far away from the anchor block, of the sliding block is located in the slide way.

Preferably, the clamping component comprises an anchor ring and a taper pipe, the anchor ring is provided with an anchor ring hole along the axis direction, and the taper pipe is positioned on the anchor ring hole.

Preferably, the taper pipe is frustum-shaped, the taper pipe is formed by combining two or more clamping pieces, a second through hole is formed in the middle of the taper pipe, and the second through hole is communicated with the taper hole through the anchor ring hole.

Preferably, the clamping assembly is provided in plurality, and each of the anchor rings is connected to the upper end surface of the anchor block.

Preferably, the reinforcing sleeve is sleeved with a second spring, the upper end of the second spring is connected with the base, and the second spring is a spiral rib.

Preferably, an internal thread is arranged in the second through hole, the second through hole and the anchor ring hole are coaxially arranged, the upper diameter and the lower diameter of the second through hole are the same, the diameter of the thin end circle of the conical tube is smaller than the aperture of the anchor ring hole, and the diameter of the thick end circle of the conical tube is larger than the aperture of the anchor ring hole.

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

(1) according to the anchoring device for the unbonded steel strand, the anchor block and the base are matched, the sliding blocks are arranged at the two ends of the anchor block, so that the anchor block can relatively slide in the base, after the anchoring device is installed, the first spring can provide a thrust force, and when the steel strand is loosened, the first spring can timely and adaptively adjust the prestress of the steel strand, so that the change of the prestress value of the steel strand due to stratum creeping, steel loosening, structural change and the like is avoided.

(2) According to the anchoring device for the unbonded steel strand, the conical pipe is arranged in the anchor ring, so that the end part of the unbonded steel strand is peeled and then placed into the second through hole of the conical pipe (the diameter of the peeled steel strand is larger than the inner diameter of the second through hole), the larger the depth of the conical pipe entering the anchor ring hole is, the smaller the radius of the second through hole becomes, the larger the wrapping force of the conical pipe on the steel strand is along with the pulling of the steel strand, and the fixing force can be ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments are briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a structural sectional view of the present invention.

Fig. 3 is a partially enlarged view of a portion a of fig. 1 according to the present invention.

In the figure: 1. a base; 2. a first groove; 3. an anchor block; 4. a second groove; 5. a slider; 6. positioning the slide bar; 7. a first spring; 8. a slideway; 9. a clamping assembly; 10. an anchor ring; 11. a taper pipe; 12. a second through hole; 13. a tapered hole; 14. an opening; 15. reinforcing the sleeve; 16. a second spring; 17. a first via.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1-3, an anchoring device for an unbonded steel strand comprises a base 1, wherein a first groove 2 is formed in the middle of the upper end face of the base 1, an anchor block 3 is arranged in the first groove 2, four sliding blocks 5 are horizontally arranged on the side face of the anchor block 3, the four sliding blocks 5 are respectively located in the middle positions of the left side face, the right side face, the front side face and the rear side face of the anchor block 3, a second groove 4 is formed in the side face of the first groove 2, four second grooves 4 are arranged in the second groove 4, the four second grooves 4 are respectively located in the left side face, the right side face, the front side face and the rear side face of the first groove 2, the second groove 4 has a certain height, the other end of the sliding block 5 is located in the second groove 4, a first through hole 17 is formed in one end of the sliding block 5 located in the second groove 4, a positioning slide bar 6 is arranged in the second groove 4, the positioning slide bar 6 is connected with the upper side surface and the lower side surface of the second groove 4 through a first through hole 17, the positioning slide bar 6 is vertically arranged, a first spring 7 is sleeved on the part, located at the lower end of the sliding block 5, of the positioning slide bar 6, the initial length of the first spring 7 is not smaller than the length of the positioning slide bar 6, a clamping component 9 is arranged at the upper end of the anchor block 3, a tapered hole 13 is arranged in the anchor block 3, and an opening 14 is arranged at the lower end of the base 1. Through this setting, can guarantee that the end of skinning of no bonding steel strand wires is in proper order through opening 14, bell mouth 13 back and clamping subassembly 9 fixed connection, in the anchor, should guarantee that slider 5 is located the well lower part position of second recess 4, first spring 7 is compressed this moment, has certain reconversion's power to can produce certain pulling force to the steel strand wires, work as because the power value of wriggling on stratum, the relaxation of steel, structure change etc. messenger's steel strand wires prestressing force changes, can in time carry out the adaptability to steel strand wires prestressing force through first spring 7 and adjust.

The lower extreme of base 1 still is equipped with reinforcing cover 15, be equipped with the third through-hole in the reinforcing cover 15, the third through-hole warp opening 14 with first recess 2 intercommunication, just third through-hole, opening 14, the same axis setting of bell mouth 13, the cover has second spring 16 on the reinforcing cover 15, the upper end of second spring 16 with base 1 is connected, second spring 16 is the spiral muscle. The base 1 and the reinforcing sleeve 15 are used for being connected with concrete and jointly play a role in fixing the anchoring device, and the second spring 16 is arranged to buffer the tensile force generated by part of the steel strands.

Two or more first through holes 17 are formed in each sliding block 5, and the same number of positioning sliding rods 6 are correspondingly arranged in each second groove 4. The sliding block 5 is ensured to move up and down on the positioning sliding rod 6, and the structure is more stable.

The side face, far away from anchor block 3, of second groove 4 is provided with a slide way 8, and the end, far away from anchor block 3, of slide block 5 is located in slide way 8. The sliding block 5 is guaranteed to slide up and down on the slide rail 8, and the structure is more stable.

The clamping component 9 comprises an anchor ring 10 and a taper pipe 11, wherein the anchor ring 10 is provided with an anchor ring hole along the axis direction, the taper pipe 11 is positioned on the anchor ring hole, the taper pipe 11 is in a frustum shape, the taper pipe 11 is formed by combining two or more clamping pieces, the middle part of the taper pipe 11 is provided with a second through hole 12, the second through hole 12 is communicated with the taper hole 13 through the anchor ring hole, preferably, the clamping component 9 is provided with a plurality of clamping components, each anchor ring 10 is connected with the upper end face of the anchor block 3, an internal thread is arranged in the second through hole 12, the second through hole 12 and the anchor ring hole are coaxially arranged, the upper and lower diameters of the second through hole 12 are the same, the diameter of a thin end circle of the taper pipe 11 is smaller than the diameter of the anchor ring hole, and the diameter of a thick end circle of the taper pipe 11 is larger than the diameter of the anchor ring hole. Through this setting, can make the tip of no bonding steel strand wires after skinning put into the second through-hole 12 of taper pipe 11 through the anchor ring hole, the steel strand wires diameter of skinning this moment is greater than the internal diameter of second through-hole 12, the degree of depth that taper pipe 11 got into the anchor ring hole is big more, and the radius of its second through-hole 12 just becomes littleer, along with dragging of steel strand wires, and taper pipe 11 can guarantee fixed dynamics to the parcel dynamics grow of steel strand wires promptly.

The working principle is as follows: the utility model relates to an anchoring device for an unbonded steel strand, which is characterized in that when in use, the peeled end of the unbonded steel strand sequentially passes through a third through hole, an opening 14, a conical hole 13 and an anchor ring hole to reach a second through hole 12, and a base 1, a reinforcing sleeve 15 and a second spring are fixed; when anchoring, should guarantee that slider 5 is located the well lower part position of second recess 4, first spring 7 is compressed this moment, has certain power of resumeing the original state to can produce certain pulling force to the steel strand wires, work as because the power value of the wriggling of stratum, the lax of steel, structural change etc. messenger's steel strand wires prestressing force changes, can in time carry out the adaptability to the steel strand wires prestressing force through first spring 7 and adjust.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solution of the present invention and the equivalent replacement or modification of the technical solution and the inventive concept thereof within the technical scope of the present invention.

Claims

1. The utility model provides an anchor for unbonded steel strand wires which characterized in that: the device comprises a base (1), wherein a first groove (2) is formed in the middle of the upper end face of the base (1), an anchor block (3) is arranged in the first groove (2), a sliding block (5) is horizontally arranged on the side face of the anchor block (3), a second groove (4) is formed in the side face of the first groove (2), the other end of the sliding block (5) is located in the second groove (4), a first through hole (17) is formed in one end, located in the second groove (4), of the sliding block (5), a positioning slide rod (6) is arranged in the second groove (4), the positioning slide rod (6) is connected with the upper side face and the lower side face of the second groove (4) through the first through hole (17), a first spring (7) is sleeved on the part, located at the lower end of the sliding block (5), a clamping component (9) is arranged at the upper end of the anchor block (3), a conical hole (13) is formed in the anchor block (3), the lower end of the base (1) is provided with an opening (14).

2. The anchoring device for the unbonded steel strand as claimed in claim 1, wherein the lower end of the base (1) is further provided with a reinforcing sleeve (15), a third through hole is formed in the reinforcing sleeve (15), the third through hole is communicated with the first groove (2) through the opening (14), and the third through hole, the opening (14) and the tapered hole (13) are arranged on the same axis.

3. Anchoring device for unbonded steel strands as in claim 1, wherein said sliders (5) are four in number, four of said sliders (5) being located in the middle of the left, right, front and rear sides of said anchor block (3).

4. Anchoring device for binderless steel strands as claimed in claim 3 wherein each slider (5) has two or more first through holes (17) and each second groove (4) has the same number of positioning bars (6) therein.

5. The anchoring device for unbonded steel strands as claimed in claim 4, wherein the second groove (4) is provided with a slideway (8) on the side facing away from the anchor block (3), and the ends of the sliding blocks (5) facing away from the anchor block (3) are located in the slideway (8).

6. Anchoring device for binderless steel strands according to claim 1 wherein the clamping assembly (9) comprises an anchor ring (10) and a cone (11), the anchor ring (10) being provided with an anchor ring hole in axial direction and the cone (11) being located on the anchor ring hole.

7. The anchoring device for the unbonded steel strand as claimed in claim 6, wherein the conical pipe (11) is in the shape of a frustum, the conical pipe (11) is formed by combining two or more clamping pieces, a second through hole (12) is formed in the middle of the conical pipe (11), and the second through hole (12) is communicated with the conical hole (13) through the anchor ring hole.