阅读说明：本技术 一种抗拉拔方法及结构及其支座 (Anti-pulling method and structure and support thereof ) 是由 蒋瑞秋 刘军 李珠玲 杨春平 夏俊勇 于 2019-10-25 设计创作，主要内容包括：本发明公开了一种抗拉拔方法及结构及其支座,包括锚板、下座板、锥形夹片和钢绞线,锚板和下座板上均设有若干锥形锚孔,锥形锚孔内设有若干锥形夹片,锥形夹片内侧为圆柱面,外侧为圆锥面,若干锥形夹片在锥形锚孔内形成圆柱形孔道,钢绞线穿过设置在锥形锚孔内的若干锥形夹片形成的圆柱形孔道；当锚板及下座板分别向外侧拉拔移动时,穿过圆柱形孔道的钢绞线施加一定的预紧力,利用锥形夹片与钢绞线之间的摩擦力以及锥形夹片与锚板、下座板间的挤压力实现自锁,形成锚板与下座板间的抗拉拔结构；本发明有效利用支座内部空间,减少支座外形尺寸,利用多根钢绞线连接,当其中一根钢绞线断裂时,钢绞线仍能发挥连接作用,降低了安全隐患。(The invention discloses a drawing-resistant method, a drawing-resistant structure and a support thereof, wherein the drawing-resistant structure comprises an anchor plate, a lower seat plate, conical clamping pieces and steel strands, wherein a plurality of conical anchor holes are formed in the anchor plate and the lower seat plate, a plurality of conical clamping pieces are arranged in the conical anchor holes, the inner sides of the conical clamping pieces are cylindrical surfaces, the outer sides of the conical clamping pieces are conical surfaces, a cylindrical hole channel is formed in each conical anchor hole by the conical clamping pieces, and the steel strands penetrate through the cylindrical hole channel formed by the conical clamping pieces in the conical anchor holes; when the anchor plate and the lower seat plate are respectively pulled and moved outwards, the steel strand penetrating through the cylindrical hole channel exerts certain pre-tightening force, and self-locking is realized by utilizing the friction force between the conical clamping piece and the steel strand and the extrusion force between the conical clamping piece and the anchor plate and the lower seat plate to form a pulling-resistant structure between the anchor plate and the lower seat plate; the invention effectively utilizes the internal space of the support, reduces the overall dimension of the support, utilizes the connection of a plurality of steel strands, and when one of the steel strands is broken, the steel strands still can play a connecting role, thereby reducing the potential safety hazard.)

1. A pull-out resistant method, comprising:

arranging an anchor plate with a conical anchor hole and a lower seat plate;

arranging a plurality of conical clamping pieces in the conical anchor hole, wherein the inner side of each conical clamping piece is a cylindrical surface, the outer side of each conical clamping piece is a conical surface, and the plurality of conical clamping pieces form a cylindrical hole channel in the conical anchor hole;

arranging a steel strand to pass through the cylindrical pore passage;

the large-diameter hole of the conical anchor hole arranged on the anchor plate is opposite to the large-diameter hole of the conical anchor hole arranged on the lower seat plate in direction and is respectively close to the end part of the steel strand;

when the anchor plate and the lower seat plate are respectively pulled and moved outwards, the steel strand penetrating through the cylindrical hole channel exerts certain pretightening force, and self-locking is realized by utilizing the friction force between the conical clamping piece and the steel strand and the extrusion force between the conical clamping piece and the anchor plate and between the conical clamping piece and the lower seat plate, so that a pulling-resistant structure between the anchor plate and the lower seat plate is formed.

2. The pullout resistance method of claim 1, wherein gaps exist between the tapered clips located in the tapered anchor holes.

3. A drawing-resistant structure is used for the drawing-resistant method according to any one of claims 1-2, and is characterized by comprising an anchor plate, a lower seat plate, a conical clamping piece and a steel strand, wherein a plurality of conical anchor holes are formed in the anchor plate and the lower seat plate, a plurality of conical clamping pieces are arranged in the conical anchor holes, the inner sides of the conical clamping pieces are cylindrical surfaces, the outer sides of the conical clamping pieces are conical surfaces, the plurality of conical clamping pieces form cylindrical pore passages in the conical anchor holes, the steel strand penetrates through the cylindrical pore passages formed by the plurality of conical clamping pieces arranged in the conical anchor holes, and the large-diameter holes of the conical anchor holes in the anchor plate are opposite to the large-diameter holes of the conical anchor holes in the lower seat plate in direction and are respectively close to the ends of the steel strand.

4. The structure of claim 3, wherein the plurality of conical anchor holes are evenly distributed on a circle centered on the central axis of the anchor plate.

5. The pullout resistance structure of claim 3, wherein the anchor plate is a steel plate with a concave spherical surface on one side.

6. The pullout resistant structure of claim 3, wherein there are gaps between the tapered clips located in the tapered anchor holes.

7. A support based on a tensile structure of any one of claims 3 to 6, comprising an upper support plate, a tensile structure, a piston and a middle support plate, wherein the anchor plate of the tensile structure is arranged in a reserved cavity of the piston, a concave spherical surface of the anchor plate and a convex spherical surface on the piston form a rotation friction pair, the piston and the middle support plate are respectively provided with a hole passage corresponding to the anchor plate for the penetration of a steel strand, and the steel strand sequentially passes through the hole passages on the anchor plate, the piston, the middle support plate and the lower support plate for connecting the upper part and the lower part of the spherical support.

Technical Field

The invention relates to the field of bridge supports, in particular to a pulling-resistant method, a pulling-resistant structure and a support thereof.

Background

At present, in straddle type monorail, cantilever beam and steel structure buildings, the adopted support not only needs to have the functions of bearing vertical force, horizontal displacement and rotation, but also needs to bear certain vertical drawing force. In the prior art, a support anti-pulling structure mainly has two technical schemes:

the first technical scheme is as follows: set up the tensile structure of pulling out on bedplate, piston, the bedplate down on the support, pull out the board through the tensile of support own structure or extra setting, make the upper and lower part of support connect together, realize the tensile function of pulling out, the common characteristics of this type of technical scheme are: the anti-pulling structure is arranged on the periphery of the support.

The second technical scheme is as follows: the inside installation space of drawing structure of reserving of support piston, through drawing the structure by the tensile of pull rod, arm-tie constitution, couple together piston and lower bedplate, make the support possess the tensile function of drawing, specifically see the patent: 201610361719.7.

according to the first technical scheme, the overall dimension of the support is increased, the use occasions are limited, and the anti-drawing part is in rigid contact and is easy to rust, so that the service life of the support is influenced; the second scheme has compact structure and is not easy to corrode, but the drawing-resistant structure has complex structure and is difficult to assemble; in addition, the whole support is only connected by the pull rod and cannot be regularly maintained and checked when being installed inside the support, and if the pull rod is broken due to cracks, fatigue and the like, the function of the support is invalid, so that serious traffic accidents such as beam falling, vehicle derailment and the like are caused.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a drawing-resistant method and a drawing-resistant structure, wherein a plurality of steel strands are used for connection, when one of the steel strands is broken, the steel strand still can play a role in connection, so that potential safety hazards are reduced, the internal space of a support is effectively utilized, and the overall dimension of the support is reduced.

The technical scheme adopted for solving the problems in the prior art is as follows:

provided is a drawing-resistant method, which comprises the following steps:

arranging an anchor plate with a conical anchor hole and a lower seat plate;

arranging a plurality of conical clamping pieces in the conical anchor hole, wherein the inner side of each conical clamping piece is a cylindrical surface, the outer side of each conical clamping piece is a conical surface, and the plurality of conical clamping pieces form a cylindrical hole channel in the conical anchor hole;

arranging a steel strand to pass through the cylindrical pore passage;

the large-diameter hole of the conical anchor hole arranged on the anchor plate is opposite to the large-diameter hole of the conical anchor hole arranged on the lower seat plate in direction and is respectively close to the end part of the steel strand;

in the invention, when the anchor plate and the lower seat plate are respectively pulled and moved outwards, the steel strand penetrating through the cylindrical hole channel applies a certain pretightening force, and self-locking is realized by utilizing the friction force between the conical clamping piece and the steel strand and the extrusion force between the conical clamping piece and the anchor plate and the lower seat plate, so that a pulling-resistant structure between the anchor plate and the lower seat plate is formed.

Furthermore, gaps exist among the conical clamping pieces positioned in the conical anchor holes, so that the steel strand can be gradually clamped in the pore channels of the conical clamping pieces, and the anti-pulling strength is increased by utilizing the extrusion force of the conical clamping pieces.

The invention also aims to provide a drawing-resistant structure which is used for the drawing-resistant method to realize the drawing-resistant function between the anchor plate and the lower seat plate, and the specific technical scheme is as follows:

the anti-pulling structure comprises an anchor plate, a lower seat plate, conical clamping pieces and steel strands, wherein a plurality of conical anchor holes are formed in the anchor plate and the lower seat plate, a plurality of conical clamping pieces are arranged in the conical anchor holes, the inner sides of the conical clamping pieces are cylindrical surfaces, the outer sides of the conical clamping pieces are conical surfaces, the conical clamping pieces form cylindrical pore passages in the conical anchor holes, the steel strands penetrate through the cylindrical pore passages formed by the conical clamping pieces in the conical anchor holes, and the large-diameter holes of the conical anchor holes in the anchor plate are opposite to the large-diameter holes of the conical anchor holes in the lower seat plate in direction and are respectively close to the end parts of the steel strands.

Furthermore, a plurality of conical anchor holes in the anchor plate are uniformly distributed on a circle with the center shaft of the anchor plate as the circle center, and the friction force and the extrusion force on the steel strand can be balanced due to the uniform distribution of the conical anchor holes, so that the anti-pulling effect can be better realized.

Furthermore, the anchor plate is a steel plate with a concave spherical surface on one side, and the concave spherical surface and the convex spherical surface on the piston form a rotating friction pair, so that the anti-pulling structure and the offset of the support caused by uneven stress of the steel strand are reduced.

Furthermore, gaps exist among the conical clamping pieces positioned in the conical anchor holes; the steel strand can be gradually clamped in the pore channel of the conical clamping piece, and the anti-pulling strength is increased by utilizing the extrusion force of the conical clamping piece.

The invention also aims to provide a support based on the anti-pulling structure, which is connected by a plurality of steel strands, when one of the steel strands is broken, the steel strands can still play a role in connection, so that the potential safety hazard is reduced, the internal space of the support is effectively utilized, and the overall dimension of the support is reduced, and the specific technical scheme is as follows:

the utility model provides a support based on structure is pulled out to above-mentioned tensile, includes upper bracket board, tensile structure, piston, well bedplate, the anchor plate that the structure was pulled out to the tensile locates in the piston reserved cavity, the concave spherical surface of anchor plate with convex spherical surface on the piston constitutes the running friction pair, all be equipped with on piston and the well bedplate with the pore that the anchor plate corresponds for wear to establish steel strand wires, steel strand wires pass the pore on anchor plate, piston, well bedplate and the undersetting board in proper order, are used for connecting the upper portion and the lower part of ball-type support.

The beneficial effects are as follows:

1. the support drawing-resistant structure consists of an anchor plate, a clamping piece, a steel strand and a lower seat plate of the support. One side of the anchor plate is provided with a concave spherical surface which can be matched with a convex spherical surface arranged on the support to form a rotary friction pair, so that the rotary requirement of the anti-pulling structure is met;

2. compared with an anti-pulling structure arranged at the periphery of the support, the internal space of the support can be effectively utilized, and the overall dimension of the support is reduced;

3. according to the technical scheme, the plurality of steel strands are connected, when one steel strand is broken, the other steel strands can still play a connecting role, and potential safety hazards are reduced;

4. according to the technical scheme, only the anchor plate is arranged in the cavity of the piston, so that the requirement on the height of the piston can be reduced.

Drawings

FIG. 1 is a schematic view of a drawing-resistant structure in this embodiment;

FIG. 2 is a schematic view of the anchor plate and the tapered anchor holes of the present embodiment;

FIG. 3 is a schematic view of a tapered clip structure according to the present embodiment;

FIG. 4 is a schematic view of the tapered clamping piece of the present embodiment in an operating state;

FIG. 5 is a schematic view of a support structure in this embodiment;

FIG. 6 is an enlarged view A of the connection structure of the anti-pulling structure in the support of this embodiment.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

As shown in fig. 1, this embodiment provides an anti-drawing structure, including anchor slab 1, bedplate down 2, toper clamping piece 3 and steel strand wires 4, all be equipped with a plurality of toper anchor eyes 10 on anchor slab 1 and bedplate down 2, be equipped with a plurality of toper clamping pieces 3 in the toper anchor eye 10, toper clamping piece 3 inboard is the face of cylinder, the outside is the conical surface, a plurality of toper clamping pieces 3 form cylindrical pore 30 in toper anchor eye 10, steel strand wires 4 pass the cylindrical pore 30 that a plurality of toper clamping pieces 3 set up in toper anchor eye 10 formed, the big diameter hole of toper anchor eye 10 on anchor slab 1 is opposite with the big diameter hole direction of toper anchor eye 10 on bedplate down 2 and is close to the tip of steel strand wires 4 respectively.

A plurality of conical anchor holes 10 on the anchor plate 1 are uniformly distributed on a circle 11 which takes the center shaft of the anchor plate 1 as the circle center, and the friction force and the extrusion force on the steel strand 4 can be balanced by the uniform distribution of the conical anchor holes 10, so that the anti-pulling effect can be better realized.

The anchor plate 1 is a steel plate with a concave spherical surface 12 on one side, and the concave spherical surface 12 and a convex spherical surface on the piston form a rotating friction pair, so that the anti-pulling structure and the offset of the support caused by uneven stress of the steel strand 4 are reduced.

Gaps 31 exist among the conical clamping pieces 3 positioned in the conical anchor holes 10; the steel strand 4 can be gradually clamped in the 30 pore channels of the conical clamping piece 3, and the anti-pulling strength is increased by utilizing the extrusion force of the conical clamping piece 3.

In this embodiment, the anti-pulling manner of the anti-pulling structure is as follows: when the anchor plate 1 and the lower seat plate 2 are respectively pulled and moved outwards, the steel strand 4 penetrating through the cylindrical hole 30 applies a certain pre-tightening force, and self-locking is realized by utilizing the friction force between the conical clamping piece 3 and the steel strand 4 and the extrusion force between the conical clamping piece 3 and the anchor plate 1 and the lower seat plate 2, so that the anti-pulling structure between the anchor plate 1 and the lower seat plate 2 is formed.

As shown in fig. 5, the present embodiment further provides a support based on the above anti-pulling structure, including an upper support plate 5, an anti-pulling structure, a piston 6, and a middle support plate 7, where the anchor plate 1 of the anti-pulling structure is disposed in a cavity reserved in the piston 6, a concave spherical surface 12 of the anchor plate 1 and a convex spherical surface on the piston 6 form a rotational friction pair, the piston 6 and the middle support plate 7 are both provided with a hole channel corresponding to the anchor plate 1 for passing through a steel strand 4, and the steel strand 4 sequentially passes through the hole channels on the anchor plate 1, the piston 6, the middle support plate 7, and the lower support plate 2 for connecting an upper portion and a lower portion of the spherical support.

In this embodiment, the anti-pulling structure of the support is composed of an anchor plate, a clamping piece, a steel strand and a lower support plate of the support. One side of the anchor plate is provided with a concave spherical surface which can be matched with a convex spherical surface arranged on the support to form a rotary friction pair, so that the rotary requirement of the anti-pulling structure is met; compared with an anti-pulling structure arranged at the periphery of the support, the internal space of the support can be effectively utilized, and the overall dimension of the support is reduced; in the embodiment, a plurality of steel strands are used for connection, when one steel strand is broken, the other steel strands can still play a connecting role, and potential safety hazards are reduced; in the embodiment, only the anchor plate is arranged in the cavity of the piston, so that the requirement on the height of the piston can be reduced.

In this embodiment, the support is a longitudinal spherical support, and the actual support body may be a basin-shaped support, a spherical support, a hyperboloid support, or the like.

It should be understood that the above examples are only for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection of the claims of the present invention.