Novel prestressed steel anchor backing plate and processing method thereof
阅读说明：本技术 一种新型预应力钢制锚垫板及其加工方法 (Novel prestressed steel anchor backing plate and processing method thereof ) 是由 蔡维好 于 2019-04-25 设计创作，主要内容包括：本发明公开了一种新型预应力钢制锚垫板,包括底板、延长筒以及灌浆嘴,延长筒上端侧向挤压成型有一圈外加强凸起,且外加强凸起内部形成有一圈内限位槽,还公开了一种新型预应力钢制锚垫板的加工方法,包括切割延长筒和灌浆嘴所需的钢管毛坯,并将延长筒毛坯件下端侧壁切割出灌浆孔,将底板毛坯件一次性冲压形成安装孔、弧形缺口以及中心孔；将延长筒毛坯件置于内限位槽成型机上进行侧向挤压成型,从而使得延长筒上端同时形成一圈内限位槽和外加强凸起；最后将延长筒、灌浆嘴以及底板拼接后焊接成型。本发明解决了目前的延长筒与波纹管之间存在空隙,会造成波纹管和其中的钢绞线偏心的问题,还会造成灌浆操作中的漏浆问题。(The invention discloses a novel prestressed steel anchor backing plate, which comprises a bottom plate, an extension cylinder and a grouting nozzle, wherein a circle of outer reinforcing bulge is formed at the upper end of the extension cylinder in a lateral extrusion manner, and a circle of inner limiting groove is formed inside the outer reinforcing bulge; placing the blank of the extension cylinder on an inner limiting groove forming machine for lateral extrusion forming, so that a circle of inner limiting groove and an outer reinforcing bulge are formed at the upper end of the extension cylinder at the same time; and finally, splicing the extension cylinder, the grouting nozzle and the bottom plate and then welding and forming. The invention solves the problems that the corrugated pipe and the steel strand therein are eccentric due to the existence of a gap between the conventional extension cylinder and the corrugated pipe and the slurry leakage problem in the grouting operation.)
1. The utility model provides a novel prestressing steel makes anchor backing plate, includes bottom plate (1), extension section of thick bamboo (2) and grout mouth (4), its characterized in that: bottom plate (1) center punching press has centre bore (13) equivalent with an extension section of thick bamboo (2) aperture, mounting hole (11) have still been seted up to bottom plate (1) outward flange, an extension section of thick bamboo (2) welding is at bottom plate (1) up end to guarantee centre bore (13) and an extension section of thick bamboo (2) hole coincidence, a extension section of thick bamboo (2) lower extreme lateral wall is seted up grouting hole (23) equivalent with grouting nozzle (4) hole size, grouting nozzle (4) are 90 elbow structure, just port aligns and welds each other with grouting hole (23) on grouting nozzle (4), arc breach (12) have been seted up to bottom plate (1) outward flange, just grouting nozzle (4) lower extreme inserts in arc breach (12) and welds each other.
2. The novel prestressed steel anchor backing plate of claim 1, wherein: the upper end of the extension cylinder (2) is laterally extruded and formed with a circle of external reinforcing protrusions (21).
3. The novel prestressed steel anchor backing plate and the processing method thereof according to claim 2, wherein: a circle of inner limiting groove (22) is formed inside the outer reinforcing protrusion (21).
4. A novel prestressed steel anchor backing plate according to claim 3, characterized in that: the longitudinal section of the inner limiting groove (22) is of a conical structure, the height of the conical structure gradually decreases from one side close to the center of the conical structure to one side of the outer edge of the conical structure, a circle of O-shaped limiting ring (3) is tightly matched with the inner part of the inner limiting groove (22), and the inner diameter of the O-shaped limiting ring (3) is smaller than that of the extension cylinder (2).
5. The novel prestressed steel anchor backing plate of claim 4, wherein: and the inner wall of the O-shaped limiting ring (3) is also distributed with a thread structure.
6. The novel prestressed steel anchor backing plate and the processing method thereof according to any one of claims 1-5, wherein: the 90-degree elbow structure of the grouting nozzle (4) is formed by mutually splicing and welding a horizontal steel pipe (41) and a vertical steel pipe (42) which are arranged at an angle of 45 degrees.
7. A novel prestressed steel anchor backing plate according to any one of claims 1-5, characterized in that: the grouting nozzle (4) and the extension cylinder (2) are formed by cutting seamless steel tubes.
8. A novel processing method of a prestressed steel anchor backing plate is characterized by comprising the following steps: the method comprises the following steps:
(1) processing a steel pipe: selecting a proper seamless steel pipe, cutting a steel pipe blank required by the extension cylinder (2) and the grouting nozzle (4) according to the required size, cutting one end of the steel pipe blank required by the grouting nozzle (4) into two sections of a transverse steel pipe (41) and a vertical steel pipe (42) in a 45-degree inclined cutting mode when cutting the steel pipe blank, and cutting a grouting hole (23) in the side wall of the lower end of the blank of the extension cylinder (2);
(2) processing a bottom plate: selecting a proper steel plate, turning out a blank piece required by the bottom plate (1) by using a lathe, and then stamping the blank piece of the bottom plate (1) at one time to form a mounting hole (11), an arc-shaped notch (12) and a central hole (13);
(3) And (3) forming the reinforcing protrusion: placing the blank of the extension cylinder (2) with the cut grouting hole (23) on an inner limiting groove forming machine (6) for lateral extrusion forming, wherein the inner limiting groove forming machine (6) can apply mutual extrusion acting force in the horizontal direction between the inner side wall and the outer side wall of the upper end of the blank of the extension cylinder (2), so that a circle of inner limiting groove (22) and an outer reinforcing bulge (21) are formed at the upper end of the extension cylinder (2) at the same time;
(4) welding and forming of the anchor backing plate: splicing the extension cylinder (2) with the inner limiting groove (22) and the outer reinforcing protrusion (21) formed in the step (3) on the top surface of the base plate (1) punched in the step (2), ensuring that the center of the extension cylinder (2) is coaxially arranged with the central hole (13) of the base plate (1), and then welding the extension cylinder (2) and the base plate (1) with each other; splice horizontal steel pipe (41) and vertical steel pipe (42) each other and form behind the 90 elbow structure each other welding and form grout mouth (4) overall structure, then splice the tip of horizontal steel pipe (41) in grout hole (23) position of extension section of thick bamboo (2), grout hole (23) aligns with extension section of thick bamboo (2) hole this moment, and vertical steel pipe (42) lower tip just inserts in arc breach (12), then weld each other between horizontal steel pipe (41) tip and the extension section of thick bamboo (2) lateral wall, weld each other between vertical steel pipe (42) and bottom plate (1), thereby form anchor backing plate overall structure.
9. The processing method of the novel prestressed steel anchor backing plate as claimed in claim 8, wherein: the inner limiting groove forming machine (6) comprises a base (66), a fixed disc (61) fixed on the base (66), a positioning column (64) rotatably installed on the fixed disc (61), a placing disc (62) which is integrally formed with the positioning column (64) and coaxially arranged on the outer side of the bottom end of the positioning column (64), a motor component which is installed inside the base (66) and can realize rotation of the positioning column (64), a U-shaped mounting frame (67) which can slide along the base (66), an extrusion disc (65) rotatably installed inside the U-shaped mounting frame (67), and a hydraulic cylinder component (610) which can push the U-shaped mounting frame (67) to realize extrusion between the extrusion disc (65) and the positioning column (64), wherein the outer side of the bottom end of the positioning column (64) is further coaxially formed with a circle of positioning bulge (63), and the outer edge of the middle part of the extrusion disc (65) is further provided, and the positioning groove (68) and the protrusion (63) are positioned at the same height position, and the outer diameter of the positioning protrusion (63) is smaller than the inner diameter of the blank of the extension cylinder (2).
10. The processing method of the novel prestressed steel anchor backing plate as claimed in claim 9, wherein: base (66) top surface both sides still are fixed with a set of guide rail (611), sliding connection has slider (69) on guide rail (611), just slider (69) are fixed in U type mounting bracket (67) bottom both sides position.
Technical Field
The invention relates to the technical field of anchor backing plates, in particular to a novel prestressed steel anchor backing plate and a processing method thereof.
Background
At present, the anchor backing plate used for the prestressed bridge is mainly made of an iron casting, the anchor backing plate of the iron casting is mainly made of HT200 gray cast iron, and the anchor backing plate is low in strength and only 200 MPa. Meanwhile, the surface quality of the iron casting is poor, and not only a small amount of air holes exist in the iron casting, but also other impurities are contained, so that the use performance of the iron casting is seriously reduced. In addition, the casting industry is a high-energy-consumption industry, the production efficiency is low, the market demand cannot be met, and the environment is seriously polluted. Therefore, a new road needs to be opened up to meet the wide demand of the market.
In addition, because the anchor backing plate need insert the bellows in its extension section of thick bamboo when using, and guarantee that steel strand wires extend to in the bellows, because the diameter of bellows is often less than the bore of an extension section of thick bamboo in the work progress, can not guarantee to prolong tight fit between a section of thick bamboo and the bellows and be connected, but there is certain space, so just can cause the eccentric problem of bellows pore and steel strand wires wherein, make steel strand wires atress uneven drawing the in-process, cause steel strand wires to buckle even easily, in addition, the gap between an extension section of thick bamboo and the bellows still can cause the hourglass thick liquid problem in the grout operation, the clearance to the later stage has increased the difficulty.
Disclosure of Invention
Technical scheme (I)
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a novel prestressing force steel anchor backing plate, includes bottom plate, an extension section of thick bamboo and grout mouth, bottom plate center stamping has the centre bore that matches with an extension section of thick bamboo aperture, the mounting hole has still been seted up to the bottom plate outward flange, an extension section of thick bamboo welding is at the bottom plate up end to guarantee centre bore and an extension section of thick bamboo hole coincidence, a grout hole that matches with grout mouth hole size is seted up to extension section of thick bamboo lower extreme lateral wall, grout mouth is 90 elbow structure, just grout mouth upper end aligns and welds each other with the grout hole, the arc breach has been seted up to the bottom plate outward flange, just grout mouth lower extreme inserts in the arc breach and welds each other.
Preferably, the upper end of the extension cylinder is laterally extruded with a circle of external reinforcing protrusions.
Preferably, a circle of inner limiting groove is formed in the outer reinforcing protrusion.
Preferably, the longitudinal section of the inner limiting groove is of a conical structure, the height of the conical structure gradually decreases from one side close to the center of the longitudinal section to one side of the outer edge of the longitudinal section, a circle of O-shaped limiting ring is tightly matched with the inner part of the inner limiting groove, and the inner diameter of the O-shaped limiting ring is smaller than that of the extension cylinder.
Preferably, the inner wall of the O-shaped limiting ring is also distributed with a thread structure.
Preferably, the 90-degree elbow structure of the grouting nozzle is formed by mutually splicing and welding a horizontal steel pipe and a vertical steel pipe which are arranged at an angle of 45 degrees.
Preferably, the grouting nozzle and the extension cylinder are both formed by cutting seamless steel tubes.
The invention also provides a processing method of the novel prestressed steel anchor backing plate, which comprises the following steps:
(1) processing a steel pipe: selecting a proper seamless steel pipe, cutting a steel pipe blank required by the extension cylinder and the grouting nozzle according to the required size, wherein when the steel pipe blank required by the grouting nozzle is cut, the steel pipe blank is cut into two sections of a transverse steel pipe and a vertical steel pipe according to the mode that one end of the steel pipe blank is obliquely cut along an angle of 45 degrees, and a grouting hole is cut in the side wall of the lower end of the extension cylinder blank;
(2) processing a bottom plate: selecting a proper steel plate, turning a blank piece required by the bottom plate by using a lathe, and then stamping the blank piece of the bottom plate at one time to form a mounting hole, an arc-shaped notch and a central hole;
(3) and (3) forming the reinforcing protrusion: placing the extension cylinder blank with the cut grouting hole on an inner limiting groove forming machine for lateral extrusion forming, wherein the inner limiting groove forming machine can apply a mutual extrusion acting force in the horizontal direction between the inner side wall and the outer side wall of the upper end of the extension cylinder blank, so that a circle of inner limiting groove and an outer reinforcing bulge are formed at the upper end of the extension cylinder;
(4) Welding and forming of the anchor backing plate: splicing the extension cylinder with the inner limiting groove and the outer reinforcing protrusion formed in the
The inner limiting groove forming machine comprises a base, a fixed disc fixed on the base, a positioning column rotatably installed on the fixed disc, a placing disc coaxially arranged outside the bottom end of the positioning column, a positioning column rotating motor assembly installed inside the base, a U-shaped mounting frame capable of sliding along the base, and a squeezing disc rotatably installed inside the U-shaped mounting frame, wherein the squeezing disc can be pushed inside the U-shaped mounting frame to achieve squeezing between the squeezing disc and the positioning column, the bottom end of the positioning column is coaxially formed in the outer side of the bottom end of the positioning column, a circle of positioning protrusion is formed in the outer edge of the middle of the squeezing disc, a circle of positioning groove is formed in the outer edge of the middle of the squeezing disc, the positioning groove and the protrusion are located at the same height position, and the outer diameter.
The base is characterized in that a set of guide rails are further fixed on two sides of the top surface of the base, sliding blocks are connected to the guide rails in a sliding mode, and the sliding blocks are fixed to two sides of the bottom end of the U-shaped mounting frame.
(II) advantageous effects
The invention provides a novel prestressed steel anchor backing plate and a processing method thereof, and the novel prestressed steel anchor backing plate has the following beneficial effects:
(1) the invention is formed by cutting the extension cylinder and the grouting nozzle by adopting segmented seamless steel pipes, is different from the structural form of the traditional iron casting anchor backing plate, does not need to use a mould to pour and form the molten pig iron and then carry out reprocessing operation, but uses the finished seamless steel pipes to directly cut and then weld and form the finished seamless steel pipes, thereby greatly shortening the processing period, reducing the energy consumption and improving the environmental protection property of the processing process.
(2) The invention forms a circle of external reinforcing bulges by laterally extruding and forming the upper end of the extension cylinder so as to form a circle of internal limiting grooves inside the extension cylinder, and a circle of O-shaped limiting ring is tightly matched in the inner limiting groove, so that the design can effectively enhance the use strength of the extension cylinder, meanwhile, the inner limiting groove can be additionally provided with an O-shaped limiting ring, after the corrugated pipe with the outer diameter smaller than the inner diameter of the extension cylinder is inserted into the extension cylinder, the O-shaped limiting ring can be tightly sleeved on the outer side of the corrugated pipe, thereby filling the gap between the corrugated pipe and the O-shaped spacing ring, so that the corrugated pipe pore canal and the steel strand penetrating through the corrugated pipe pore canal can not have the eccentric problem, therefore, the problems that the steel strand is stressed unevenly in the drawing process and even is easy to bend are effectively solved, the loss of prestress is effectively reduced, and in addition, the problem of slurry leakage caused by a gap between the extension cylinder and the corrugated pipe can be effectively solved;
In addition, the longitudinal section of the inner limiting groove is designed into a conical structure with the height gradually reduced from one side close to the center of the longitudinal section to one side of the outer edge, so that the tight fit effect between the O-shaped limiting ring and the inner limiting groove can be further enhanced, and in order to further enhance the connection effect between the corrugated pipe and the O-shaped limiting ring, the inner wall of the O-shaped limiting ring is also provided with a thread structure.
(3) In the invention, an inner limiting groove forming machine is utilized to apply a mutual extrusion acting force in the horizontal direction between the inner side wall and the outer side wall at the upper end of the blank of the extension cylinder, thereby leading the upper end of the extension cylinder to simultaneously form a circle of inner limiting groove and outer reinforcing protrusion, being different from the traditional mode of simply utilizing the vertical extrusion forming reinforcing rib structure, which can form a regular inner limit groove with the same structure as the extrusion die at the position corresponding to the outer strengthening bulge on the inner wall of the extension cylinder, thereby being capable of tightly matching the O-shaped limiting ring without the problem that the O-shaped limiting ring falls off or can not be smoothly installed, compared with the traditional vertical extrusion forming reinforcing rib structure, because the supporting function of an extrusion die and the mutual extrusion function of the inner side and the outer side are not available, although a reinforcing rib structure can be formed, the grooves in the reinforcing rib structure are often not regular enough, and the structure can not be matched with an O-shaped limiting ring;
Wherein, location arch and positioning groove play fine extrusion die's effect for finally can form the O type spacing collar of rule, and utilize can automatic pivoted reference column and the mutual extrusion operation of extrusion dish that can rotate relatively, can effectively promote extrusion's efficiency.
Drawings
FIG. 1 is a schematic front view of an anchor pad according to the present invention;
FIG. 2 is a schematic longitudinal cross-sectional view of an extension cartridge of the present invention;
FIG. 3 is a schematic top view of the elongated canister of the present invention;
FIG. 4 is a schematic top view of the base plate of the present invention;
FIG. 5 is a schematic view of the main view of the inner limiting groove forming machine of the present invention.
In the figure: the device comprises a bottom plate 1, a
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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, and not all of the 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 invention.