CN209975508U

CN209975508U - Angle keeper and concrete precast pile

Info

Publication number: CN209975508U
Application number: CN201920685157.0U
Authority: CN
Inventors: 周兆弟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2020-01-21
Anticipated expiration: 2029-05-14

Abstract

The utility model discloses a corner protector and a concrete precast pile, wherein the corner protector is used for the concrete precast pile of which the end part is provided with a connecting component, and comprises a hoop which is an annular body and anchor angles which are connected with the inner surface of the hoop and are distributed in the circumferential direction; the anchor corner is provided with a radial extension part, a positioning hole is formed in the radial extension part, a limiting part which is located on the circumferential position of the positioning hole and is formed along the axial direction of the positioning hole in general is arranged on the radial extension part of the anchor corner, and a limiting space used for containing the end part of the connecting part is formed in the inner side area of the limiting part so that the connecting part is overlapped with the axial lead of the positioning hole. This angle keeper can carry out effectual spacing to the adapting unit on the precast pile, prevents that the locating hole on the angle keeper anchor angle from taking place the dislocation with the adapting unit on the precast pile, guarantees that the adapting unit on the precast pile can normal use.

Description

Angle keeper and concrete precast pile

Technical Field

The utility model relates to a precast concrete pile technical field especially relates to a corner protector that is used for protecting the tip of precast concrete pile. The utility model discloses still relate to and be equipped with the concrete precast pile of guarantor's angle ware.

Background

The precast concrete pile is prefabricated in factory and has reinforcing cage inside, and features that it can bear great load, firm, durable and fast, and the pile sinking process includes prefabrication, transportation, piling, sinking, hammering, static pressing, vibrating, etc. during sinking, pile is driven into soil with pile sinking equipment.

In terms of the cross-sectional shape, the concrete precast pile mainly comprises a round precast pile and a square precast pile, wherein the round precast pile can be divided into a solid precast pile and a hollow precast pile, and no matter what type of precast pile is, the corner parts at the two ends of the precast pile are all areas easy to damage, so that the corner parts need to be protected by angle protectors.

The angle protector is mainly composed of a hoop and an anchor angle, the anchor angle is arranged on the inner surface of the hoop, in the manufacturing process of the precast pile, the angle protector is placed in a precast pile mould in advance and is solidified with a precast pile body after processes of tensioning, pouring and the like, wherein the hoop is arranged on the periphery of one end or two ends of the precast pile, the end part of the pile body is protected from the outside, the end surface of the precast pile can be protected from being damaged in transportation and hoisting, in addition, the pile end surface can be ensured not to be pressed and exploded in the piling process, the anchor angle is arranged in the precast pile body, the end part of a steel reinforcement cage of the precast pile on a main stress bar is provided with a sleeve nut or other connecting parts, the anchor angle is provided with a positioning hole corresponding to the sleeve nut, when the steel reinforcement cage is tensioned, a bolt for tensioning connection penetrates through the positioning hole on the anchor angle to be connected with the sleeve nut, when the precast pile is, and the connecting piece for butt joint penetrates through the positioning hole on the anchor angle to be connected with the sleeve nut.

It can be seen that the locating hole on the anchor angle of angle keeper should be aligned with the box nut on the main stress bar, just can guarantee stretch-draw and going on smoothly of butt joint, and in actual production, because there are errors such as processing, equipment, and the anchor angle is out of shape easily, in addition in pouring the in-process, the concrete of pouring into the precast pile mould can cause certain impact to steel reinforcement cage and angle keeper, above factor leads to the locating hole of anchor angle and box nut's position to misplace and can't aim at, thereby block box nut's connection port, lead to box nut can not normally connect, influence the production and the use of precast pile.

In view of the above, the invention patent CN102689358B discloses a tensioning assembly and a tensioning method for a prestressed endless sheet pile, and a pile comprising the same, wherein the tensioning assembly comprises a stud and a hollow screw sleeve, wherein a through hole is formed in the middle of the stud and is used for connecting with a prestressed main reinforcement; the double-screw bolt is connected with the one end of hollow swivel nut through threaded connection's mode, the other end of hollow swivel nut is used for carrying out fixed connection with tensioning equipment, the tensioning subassembly still further includes bent angle spare, bent angle spare includes plane part and bent angle part, the plane part is used for cup jointing on hollow swivel nut, bent angle part is used for welding on the hoop board, be provided with the locating hole on the plane part of bent angle spare, the one end of hollow swivel nut is provided with the step, the diameter of step is the same with the diameter of locating hole, be used for making the locating hole registrate on the step, thereby cup joint cuff and hollow swivel nut together through bent angle spare.

The step of the hollow thread insert can be sleeved with the positioning hole of the plane part of the bend piece, so that a certain limiting effect can be achieved, and the hollow thread insert and the positioning hole can be prevented from being dislocated to a certain extent. However, the size of the nesting of the positioning hole and the hollow screw sleeve is only one thickness of the plane part of the corner piece, and the thickness of the plane part of the corner piece is very limited, so that the nesting connection of the positioning hole and the hollow screw sleeve is not firm enough, and the phenomenon of dislocation caused by the separation of the positioning hole and the hollow screw sleeve still exists; simultaneously, set up the wall thickness that the step must can weaken hollow swivel nut on the hollow swivel nut, after hollow swivel nut and end plate butt joint, when carrying out the stretch-draw, the hollow swivel nut tip of attenuation can warp under the tensioning force effect, hollow swivel nut after the deformation will unable normal connection, cause very serious quality problems, and, in order to process out the step, length and cost when can increase hollow swivel nut's processing, in addition, the locating hole itself does not have the effect of direction, when the installation, need the manual work to lead to, production efficiency is lower.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a protect angle ware. This angle keeper can carry out effectual spacing to the adapting unit on the precast pile, prevents that the locating hole on the angle keeper anchor angle from taking place the dislocation with the adapting unit on the precast pile, guarantees that the adapting unit on the precast pile can normal use.

Another object of the utility model is to provide a be equipped with the precast concrete pile of guarantor.

In order to achieve the purpose, the utility model provides a corner protector which is used for a concrete precast pile with a connecting part at the end part, comprising a hoop which is an annular body and anchor angles which are connected with the inner surface of the hoop and are distributed in the circumferential direction; the anchor angle is provided with a radial extension part, a positioning hole with the axis parallel to the axis of the hoop is formed in the radial extension part, a limiting part which is located on the circumferential position of the positioning hole and is formed along the axial direction of the positioning hole in general is arranged on the radial extension part of the anchor angle, and a limiting space used for containing the end part of the connecting part is formed in the inner side area of the limiting part so that the connecting part is overlapped with the axis of the positioning hole.

Preferably, the limiting part comprises a plurality of limiting baffles positioned on the outer edge of the tail end of the radial extension part, and the limiting baffles are distributed at intervals in the circumferential direction and extend in the axial direction by taking the circle center of the positioning hole as the center.

Preferably, the limiting part comprises a limiting flange positioned on the outer edge of the tail end of the radial extension part, the radian of the limiting flange is larger than a semicircle, and the circle center of the limiting flange coincides with that of the positioning hole.

Preferably, the limiting part comprises a limiting cylinder which is located on the inner edge of the positioning hole, concentric with the positioning hole and axially extending.

Preferably, the limiting cylinder is a conical cylinder with the aperture of one end smaller than that of the positioning hole.

Preferably, the stopper portion is connected to or integrally formed with the radially extending portion of the anchor horn.

Preferably, the diameter D of the positioning hole₁Is set to D₂-1mm≤D₁≤D₂+1mm, wherein D₂Is the outer diameter of the connecting member.

In order to achieve the above object, the present invention provides another angle protector for a concrete precast pile with a connecting member at an end thereof, comprising a hoop in an annular shape and anchor angles connected to an inner surface of the hoop and distributed in a circumferential direction; the anchor angle is provided with a radial extension part, a positioning hole with the axis parallel to the axis of the hoop is formed in the radial extension part, and the radial extension part is positioned at a position which enables the positioning hole to be sleeved on the outer periphery of the connecting part in the axial direction relative to the hoop and enables the distance between the positioning hole and the front end of the hoop to be larger than or equal to 1mm, 2mm or 3mm, so that the connecting part is overlapped with the axis of the positioning hole.

Preferably, a rear surface of the edge of the positioning hole forms a stop surface capable of abutting against a boss on the outer peripheral wall of the link member.

In order to achieve the above another object, the utility model provides a concrete precast pile, include the precast pile body and locate the angle protector at precast pile body one end or both ends, the angle protector be above-mentioned arbitrary one the angle protector.

The angle keeper provided by the utility model is provided with a limiting part at the periphery of the positioning hole of the radial extension part, the limiting part is formed along the axial direction of the positioning hole, the inner side of the angle keeper can form a limiting space to accommodate the end part of the connecting part on the concrete precast pile, under the limiting action of the limiting part, the connecting part can be coincided with the axial lead of the positioning hole, the dislocation between the positioning hole on the anchor angle and the connecting part on the precast pile is prevented, thus, even if the factors such as processing error, deformation and impact exist, the radial extension part of the anchor angle can not shield the connecting part on the concrete precast pile, thereby ensuring the normal use of the connecting part, and the limiting part has the guiding function, when in installation, the manual guiding can be avoided, the production efficiency is improved, meanwhile, the structural strength of the anchor angle can be increased by the limiting part, and the anchor angle is not easy to, thereby ensuring the production quality of the precast pile.

The utility model provides another kind of angle protector, the axial position of its anchor angle on the cuff is comparatively far away from the front end of cuff, make the locating hole of radial extension portion can registrate on the adapting unit, and, the distance of radial extension portion and cuff front end is more than or equal to 1mm, 2mm or 3mm, under the restriction of locating hole, can make the axial lead of adapting unit and locating hole coincide, prevent that locating hole on the anchor angle and adapting unit on the precast pile from taking place the dislocation, because locating hole and adapting unit's front end have sufficient distance, the registrate surplus between the two can guarantee that the locating hole can not break away from with the adapting unit, even there is machining error, warp, factor such as impact, the radial extension portion of anchor angle can not cause the sheltering from the adapting unit, guarantee that the adapting unit can be used normally, and, the locating hole has the guide effect, when installing, can avoid manual work to lead, improves production efficiency.

The utility model provides a precast concrete pile is equipped with above-mentioned angle protector, because angle protector has above-mentioned technological effect, then the precast concrete pile who is equipped with this angle protector also has corresponding technological effect.

Drawings

Fig. 1 is a schematic structural view of a corner protector disclosed in a first embodiment of the present invention;

fig. 2 is a schematic structural view of a single anchor angle of the angle protector according to the first embodiment of the present invention;

fig. 3 is a schematic structural view of a single anchor angle of the angle protector according to the second embodiment of the present invention;

fig. 4 is a schematic structural view of a single anchor angle of the angle protector according to the third embodiment of the present invention;

fig. 5 is a reference diagram of a use state of the angle protector disclosed in the fourth embodiment of the present invention;

FIG. 6 is a partial enlarged view of portion I of FIG. 5;

fig. 7 is a schematic structural view of a single anchor angle of the angle keeper disclosed in the fourth embodiment of the present invention.

In the figure:

1. the angle protector 2, the sleeve nut 3, the hoop 4, the anchor angle 5, the main stress rib 6, the spiral rib 7, the connecting plate 8, the nut limiting plate 9, the positioning hole 10, the limiting baffle 11, the positioning plate 12, the reinforcing flange 13, the limiting flange 14, the limiting barrel 15 and the boss.

Detailed Description

In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description.

In this specification, terms such as "front, rear, left, and right" are established based on positional relationships shown in the drawings, and the positional relationships may vary depending on the drawings, and therefore, the terms are not to be construed as absolutely limiting the scope of protection.

For the concrete precast pile, in order to ensure the structural strength and the connection strength of the precast pile, a steel bar or a steel bar (such as a PC steel bar) is usually adopted to form a main stress bar 5 of an internal framework, and a spiral rib 6 is wound and welded outside the main stress bar 5.

Because the precast pile has the need of tensioning and connecting the internal skeleton or connecting the internal skeleton with other components, the internal skeleton of a part of the precast pile is provided with a connecting part at the end part of a steel bar or a steel bar of the precast pile so as to be connected directly or through a connecting part, the sleeve nut 2 is a commonly used connecting part, one end of the sleeve is provided with a necking part which is clamped with a stress bar pier head, and the inner wall of the other end is provided with an internal thread (see figure 5).

In order to protect the end of the precast concrete pile, the angle protector 1 is required to be arranged at one end or two ends of the precast concrete pile.

Referring to fig. 1 and 2, fig. 1 is a schematic structural view of a corner protector according to a first embodiment of the present invention; fig. 2 is a schematic structural diagram of a single anchor angle of the angle protector according to the first embodiment of the present invention.

As shown in the drawings, in the first embodiment, the utility model provides a guarantor 1 is mainly used for the concrete precast pile that the tip is equipped with box nut 2.

The angle protector 1 mainly comprises a hoop 3 and a plurality of anchor angles 4, the hoop 3 is a circular ring body with a closed circumferential direction, the cross section of the circular ring body is uneven, the circular ring body is provided with a convex part and a concave part so as to improve the structural strength of the hoop and the bonding strength of a concrete precast pile, the number of the anchor angles 4 is three, the anchor angles are uniformly distributed on the inner surface of the hoop 3 along the circumferential direction, the anchor angles and the hoop 3 are fixedly connected together in a welding, clamping or bonding mode, the number of main stress ribs 5 of the concrete precast pile is generally more than three, therefore, the three anchor angles 4 on the angle protector 1 are only in one-to-one correspondence with the three sleeve nuts 2 on the concrete precast pile, and the rest sleeve nuts 2 are not matched with the anchor angles 4 of the angle protector 1.

Regarding a single anchor corner 4, the anchor corner has a connecting plate 7 connected with the inner surface of the hoop 3 and a nut limiting plate 8 which is substantially vertical to the connecting plate 7, the nut limiting plate 8 is a radial extension part of the anchor corner 4, the whole anchor corner 4 can be punched and formed by a whole plate, the connecting plate 7 is substantially rectangular, the width of the nut limiting plate 8 is gradually widened from the root part which is connected with the connecting plate 7 in an angle to the tail end, one end of the nut limiting plate which points to the circle center of the hoop 3 is provided with a semicircular outer edge, the nut limiting plate 8 is provided with a positioning hole 9 which is concentric with the semicircular outer edge, and the axis of the positioning hole 9 is parallel to the axis of the hoop 3.

The nut limiting plate 8 of the anchor angle 4 is provided with a limiting part which is formed along the axial direction of the positioning hole on the circumferential position of the positioning hole 9, and the inner side area of the limiting part forms a limiting space for accommodating the end part of the sleeve nut 2, so that the axial lead of the sleeve nut 2 and the axial lead of the positioning hole 9 coincide.

It should be noted that the above-mentioned shaft axes of the collet nut 2 and the positioning hole 9 coincide with each other, but the shaft axes of the collet nut 2 and the positioning hole 9 do not mean that they coincide absolutely, and it should be understood that they substantially coincide with each other, that is, the coincidence allows a certain error, and as long as the error value is within a range that does not affect the normal use of the collet nut 2, it is regarded that the shaft axes of the collet nut 2 and the positioning hole 9 coincide with each other.

In this embodiment, spacing portion mainly comprises three limit baffle 10 that are located the outward flange of nut limiting plate 8, these three limit baffle 10 use the centre of a circle of locating hole 9 as center along circumference direction interval distribution, and extend to the rear end of cuff 3 along axial direction, wherein, the limit baffle 10 that is located the middle of the semicircular outward flange is cowl, can form the face contact with the outer peripheral face of sleeve nut 2, the limit baffle 10 that is located the both sides of locating hole 9 is straight board, can form the line contact with the periphery face of sleeve nut 2, the inner wall through three limit baffle 10 contacts with the periphery wall of sleeve nut 2, the laminating can be realized spacing sleeve nut 2, make position relatively fixed between them.

Based on the first embodiment, in at least one embodiment, the connecting plate 7 of the anchor corner 4 may further be connected to a positioning plate 11 extending rearward and inward, the positioning plate 11 is substantially rectangular, and an included angle between the positioning plate 11 and the connecting plate 7 is an obtuse angle, and by adding the positioning plate 11, the anchoring strength between the anchor corner 4 and the concrete precast pile body may be improved, so that the connection between the anchor corner 4 and the concrete precast pile is more reliable and is not easily separated from the concrete precast pile.

In other embodiments, the reinforcing flanges 12 are provided on both sides of the nut retainer plate 8, the reinforcing flanges 12 may extend from both sides of the nut retainer plate 8 to both sides of the end of the connecting plate 7 connected thereto, and both ends of the reinforcing flanges 12 are rounded. Through setting up reinforcement turn-ups 12 can improve the structural strength of nut limiting plate 8, make nut limiting plate 8 non-deformable itself, can improve the structural strength of the contained angle that nut limiting plate 8 and connecting plate 7 formed simultaneously, make the difficult emergence of angle of contained angle change to make whole anchor angle 4 have good stability.

In the process of producing the precast concrete pile, firstly, a steel reinforcement cage is placed into a precast pile mould, then the angle protector 1 is placed at one end or two ends of the steel reinforcement cage, the position of the angle protector 1 is adjusted, positioning holes 9 of three anchor corners 4 on the angle protector 1 are aligned with three sleeve nuts 2 at two ends of the steel reinforcement cage, then bolts for tensioning connection are connected with the sleeve nuts 2 through the positioning holes 9 on the anchor corners 4, end plates or tensioning plates of the mould are relatively fixed with the steel reinforcement cage, after the mould is closed (the mould of the round concrete pile is divided into an upper mould and a lower mould, mould closing is needed, the top of the mould of a square concrete pile is open, mould closing is not needed), tensioning force is applied through tensioning equipment, the steel reinforcement cage in the mould is tensioned, certain prestress is kept, after tensioning is completed, concrete slurry is injected into the mould, and after the concrete slurry is solidified, and demolding is carried out to obtain the concrete precast pile with the angle protector 1 at one end or two ends, the hoop 3 of the angle protector 1 is visible from the outside, the anchor angle 4 is solidified in the concrete precast pile and is invisible from the outside, the hoop 3 surrounds the end part of the concrete precast pile to protect the corner part of the concrete precast pile and prevent the end part of the concrete precast pile from being damaged in the processes of transition, loading, transportation, construction and the like, and when the precast pile is butted, a connecting piece for butting can penetrate through the positioning hole 9 on the anchor angle 4 to be connected with the sleeve nut 2.

The angle keeper 4 is provided with a limit baffle 10 at the periphery of a positioning hole 9 of a nut limiting plate 8, the limit baffle 10 is formed along the axial direction of the positioning hole 9 generally, a limit space can be formed at the inner side of the limit baffle 10 to accommodate the end part of the sleeve nut 2 on the concrete precast pile, under the limiting action of the limit baffle 10, the axial leads of the sleeve nut 2 and the positioning hole 9 can be coincided, and the positioning hole 9 on the anchor angle 4 and the sleeve nut 2 are prevented from being dislocated.

Like this, even there are machining error, warp, factor such as impact, nut limiting plate 8 of anchor angle 4 also can not cause the sheltering from to box nut 2, thereby guarantee box nut 2 can normal use, and, limit baffle 10 has the guide effect, when the installation, as long as the tip of box nut 2 gets into limit baffle 10 in the spacing space, can the relative positioning, when the screw in bolt, no longer need the hand-held box nut 2 of manual work to lead, help alleviating workman intensity of labour, and the production efficiency is improved, and simultaneously, limit baffle 10 can also increase the structural strength of anchor angle 4, make anchor angle 4 be difficult to take place great deformation, and then guarantee the production quality of precast pile.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a single anchor angle of a corner protector according to a second embodiment of the present invention.

In the present embodiment, the same portions as those in the first embodiment are given the same reference numerals, and the same description is omitted.

As shown in the drawings, relative to the first embodiment, the angle keeper provided by the present embodiment does not use the limiting baffle 10, but uses the limiting flange 13 to limit the sleeve nut 2.

In this embodiment, the cuff 3 of the angle keeper 1 is substantially the same as the first embodiment, the structure of the main body of the anchor angle 4 is substantially the same as the first embodiment, and the difference mainly lies in the specific structural form of the limiting portion, the limiting portion is mainly composed of a limiting flange 13 located on the outer edge of the end of the nut limiting plate 8, the circle center of the limiting flange 13 coincides with the circle center of the positioning hole 9, the radian of the limiting flange is larger than a semicircle, the two ends of the limiting flange can be provided with non-circular straight edge portions, and the limiting of the sleeve nut 2 can be realized by contacting and fitting the inner wall of the limiting flange 13 with the outer peripheral wall of the sleeve nut 2, so that the positions of the two are relatively.

Because the angle protector 4 is provided with the limiting flange 13 at the periphery of the positioning hole 9 of the nut limiting plate 8, and the limiting flange 13 is formed along the axial direction of the positioning hole 9, a limiting space can be formed inside the angle protector to accommodate the end part of the sleeve nut 2 on the concrete precast pile, under the limiting action of the limiting flange 13, the axial leads of the sleeve nut 2 and the positioning hole 9 can be coincided, and the positioning hole 9 on the anchor angle 4 and the sleeve nut 2 are prevented from being dislocated.

So, even there are machining error, warp, factor such as impact, nut limiting plate 8 of anchor angle 4 also can not cause the sheltering from to box nut 2, thereby guarantee box nut 2 can normal use, and, spacing turn-ups 13 has the guide effect, when the installation, as long as the tip of box nut 2 gets into the inside of spacing turn-ups 13, can the relative positioning, when the screw in bolt, no longer need the hand-held box nut 2 of manual work to lead, help alleviating workman intensity of labour, improve production efficiency, and simultaneously, spacing turn-ups 13 can also increase the structural strength of anchor angle 4, make anchor angle 4 be difficult to take place great deformation, and then guarantee the production quality of precast pile.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a single anchor angle of a angle protector according to a third embodiment of the present invention.

As shown in the drawings, compared with the first embodiment or the second embodiment, the angle keeper provided by the present embodiment does not use the limiting baffle 10 or the limiting flange 13, but uses the limiting cylinder 14 to limit the sleeve nut 2.

In this embodiment, the ferrule 3 of the angle keeper 4 is substantially the same as the first embodiment, and the structure of the main body of the anchor angle 4 is substantially the same as the first embodiment, and the difference is mainly in the specific structural form of the limiting part, the limiting part of the limiting part mainly comprises a limiting cylinder 14 on the inner edge of the positioning hole 9, the limiting cylinder 14 is concentric with the positioning hole 9 and axially extends towards the front end, and is a conical cylinder with one end having a smaller aperture than the aperture of the positioning hole 9, and the limiting of the sleeve nut 2 can be realized by the contact and the fitting of the inner wall of the limiting cylinder 14 and the outer peripheral wall of the sleeve nut 2, so that the positions of the two are relatively fixed.

Because the angle protector 4 is provided with the limiting cylinder 14 at the periphery of the positioning hole 9 of the nut limiting plate 8, and the limiting cylinder 14 is formed along the axial direction of the positioning hole 9, a limiting space can be formed inside the angle protector to accommodate the end part of the sleeve nut 2 on the concrete precast pile, under the limiting action of the limiting cylinder 14, the axial leads of the sleeve nut 2 and the positioning hole 9 can be coincided, and the positioning hole 9 on the anchor angle 4 and the sleeve nut 2 are prevented from being dislocated.

So, even there are machining error, warp, factor such as impact, nut limiting plate 8 of anchor angle 4 also can not cause the sheltering from to collet nut 2, thereby guarantee that collet nut 2 can normal use, and, spacing section of thick bamboo 14 has the guide effect, when the installation, as long as make the inside of the tip entering spacing section of thick bamboo 14 of collet nut 2 through applying external force, can the relative positioning, when the screw in bolt, no longer need artifical hand-held collet nut 2 to lead, help alleviating workman intensity of labour, and the production efficiency is improved, and simultaneously, spacing section of thick bamboo 14 can also increase the structural strength of anchor angle 4, make anchor angle 4 be difficult to take place great deformation, and then guarantee the production quality of precast pile.

In the above embodiment, the limiting baffle 10, the limiting flange 13 and the limiting barrel 14 are all integrally formed with the nut limiting plate 8 by stamping, and those skilled in the art can understand that the limiting baffle 10, the limiting flange 13 and the limiting barrel 14 forming the limiting part can also be in a split combined structure with the nut limiting plate 8, that is, the limiting baffle 10, the limiting flange 13 and the limiting barrel 14 are separately formed by machining, and then connected with the nut limiting plate 8 by welding, riveting, bonding and other methods. For example, a torus with three limiting baffles 10 can be designed separately, and then the torus is connected with the nut limiting plate 8 in an overlapping manner, further, three clamping grooves or through holes corresponding to the three limiting baffles 10 can be formed in the nut limiting plate 8, after the torus is connected with the nut limiting plate 8 in an overlapping manner, the three limiting baffles 10 pass through the clamping grooves or the through holes to limit the sleeve nut 2, and the like.

Furthermore, from the dimensional parameters of the positioning hole 9, its diameter D₁Can be set as follows:

D₂-1mm≤D₁≤D₂+1mm, wherein D₂The outside diameter of the collet nut 2.

After such dimensional parameters are adopted, if D₂-1mm≤D₁≤D₂Since the wall thickness of the collet nut 2 is generally greater than 2mm, even if the collet nut 2 deviates from the positioning hole 9, the peripheral portion of the positioning hole 9 is only located on the end face of the collet nut 2, and does not block the connection port of the collet nut 2, if D₂≤D₁≤D₂+1mm, then have certain circumference clearance allowance between locating hole 9 and the collet nut 2, can be divided into two kinds of situations, one kind is that collet nut 2 directly gets into in locating hole 9, and in this case, the peripheral position of locating hole 9 can not shelter from the connector of collet nut 2 naturally, and another kind is that collet nut 2 only gets into spacing space, and in this case, because the wall thickness of collet nut 2 generally is greater than 2mm, therefore, even sleeve nut 2 and locating hole 9 appear the deviation, the peripheral position of locating hole 9 also only can be located the terminal surface of collet nut 2, and can not shelter from the connector of collet nut 2.

Referring to fig. 5, 6 and 7, fig. 5 is a reference diagram of a use state of a corner protector disclosed in a fourth embodiment of the present invention; FIG. 6 is a partial enlarged view of portion I of FIG. 5; fig. 7 is a schematic structural view of a single anchor angle of the angle keeper disclosed in the fourth embodiment of the present invention.

As shown in the figures, the connecting plate 7 of the anchor angle 4 of the angle protector 1 provided in this embodiment is arc-shaped and connected to the arc-shaped portion of the inner surface of the hoop 3, and the connecting plate 7 extends toward the front end without a positioning plate, and compared with the above embodiments, the anchor angle 4 of this embodiment adopts a reverse installation manner, so that the nut limiting plate 8 can be located at a position away from the front end of the sleeve nut 2 and biased to the rear side, and the distance between the positioning hole 9 and the front end of the hoop 3 is greater than or equal to 1mm, 2mm or 3mm, so that the positioning hole 9 on the nut limiting plate 8 can be sleeved on the outer periphery between the two ends of the sleeve nut 2, and thus, the axial lines of the sleeve nut 2 and the positioning hole 9 coincide without processing a step at the front end of the sleeve nut 2.

Under the situation, two symmetrical bosses 15 can be arranged on the outer wall of the sleeve nut 2, the edge of the positioning hole 9 forms a stop surface which can be abutted against the bosses 15, and the boss 15 limits the edge of the positioning hole 9, so that the purpose of limiting the nesting distance is achieved.

Because the positioning hole 9 is sleeved in the middle part of the sleeve nut 2, namely, the position far away from the two ends, and enough sleeving allowance is formed between the positioning hole and the sleeve nut, the anchor angle 4 can always keep the sleeving relation with the sleeve nut 2 and is not easy to separate from each other, thereby ensuring the axial leads of the anchor angle 4 and the sleeve nut 2 to be coincident, preventing dislocation and blocking a connecting port of the sleeve nut 2, and not influencing the normal use of the sleeve nut 2.

Of course, it is not necessary to install the anchor angle 4 in the reverse direction, and in the case of installing the anchor angle 4 in the forward direction, the nut retainer plate 8 may be designed to be bent toward the rear end of the ferrule 3 and then extended radially, and the positioning hole 9 of the anchor angle 4 may be also deeply fitted into the sleeve nut 2.

The above embodiments are merely preferred embodiments of the present invention, and are not limited thereto, and different embodiments can be obtained by performing targeted adjustment according to actual needs. For example, the number of the anchor corners 4 is two, four, five or more, or the connecting plates 7 and the nut limiting plates 8 of the anchor corners 4 are designed into other shapes, and so on. This is not illustrated here, since many implementations are possible.

Although the angle keeper of the present invention is mainly described by taking a round concrete precast pile as an example, it can be understood by those skilled in the art that the angle keeper 1 of a square concrete precast pile may be used in addition to the angle keeper 1 of a round concrete precast pile, and if the angle keeper 1 is used for a square concrete precast pile, the hoop 3 of the angle keeper 1 is a square ring body.

Except that above-mentioned angle keeper 1, the utility model provides a concrete precast pile, including the precast pile body with locate precast pile body one end or angle keeper 1 at both ends, wherein, angle keeper 1 be the text angle keeper 1, it links firmly on the periphery wall at precast pile body both ends after pouring the shaping with precast pile body an organic whole, the front end of its cuff 3 and concrete precast pile's terminal surface basic parallel and level protect the tip of precast pile body from the outside, all the other structures of relevant concrete precast pile please refer to prior art, this text is no longer repeated.

It is right above the utility model provides an angle protector and concrete precast pile have carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the core concepts of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A corner protector is used for a concrete precast pile with a connecting part at the end part, and is characterized by comprising a hoop in an annular body and anchor angles which are connected to the inner surface of the hoop and distributed in the circumferential direction; the anchor angle is provided with a radial extension part, a positioning hole with the axis parallel to the axis of the hoop is formed in the radial extension part, a limiting part which is located on the circumferential position of the positioning hole and is formed along the axial direction of the positioning hole in general is arranged on the radial extension part of the anchor angle, and a limiting space used for containing the end part of the connecting part is formed in the inner side area of the limiting part so that the connecting part is overlapped with the axis of the positioning hole.

2. The angle keeper of claim 1, wherein the limiting portion comprises a plurality of limiting baffles located on an outer edge of a distal end of the radially extending portion, the limiting baffles being spaced apart in a circumferential direction and extending in an axial direction around a center of the positioning hole.

3. The angle keeper of claim 1, wherein the limiting portion comprises a limiting flange located on an outer edge of the end of the radial extension portion, the limiting flange has a greater arc than a semicircle and has a center coinciding with a center of the positioning hole.

4. The angle keeper of claim 1, wherein the stop portion comprises a stop cylinder located on an inner edge of the positioning hole concentric with and extending axially from the positioning hole.

5. The angle protector according to claim 4, wherein the limiting cylinder is a conical cylinder with an end aperture smaller than the positioning hole aperture.

6. A corner protector according to any one of claims 1 to 5 wherein the stop portion is connected to or integrally formed with a radially extending portion of the anchor corner.

7. A corner protector according to any one of claims 1 to 5, wherein the diameter D of the locating hole₁Is set to D₂-1mm≤D₁≤D₂+1mm, wherein D₂Is the outer diameter of the connecting member.

8. A corner protector is used for a concrete precast pile with a connecting part at the end part, and is characterized by comprising a hoop in an annular body and anchor angles which are connected to the inner surface of the hoop and distributed in the circumferential direction; the anchor angle is provided with a radial extension part, a positioning hole with the axis parallel to the axis of the hoop is formed in the radial extension part, and the radial extension part is positioned at a position which enables the positioning hole to be sleeved on the outer periphery of the connecting part in the axial direction relative to the hoop and enables the distance between the positioning hole and the front end of the hoop to be larger than or equal to 1mm, 2mm or 3mm, so that the connecting part is overlapped with the axis of the positioning hole.

9. The corner protector according to claim 8, wherein the edge of the positioning hole forms a stop surface capable of abutting against the boss on the outer peripheral wall of the connecting member.

10. A concrete precast pile, comprising a precast pile body and angle protectors arranged at one end or two ends of the precast pile body, wherein the angle protectors are the angle protectors as claimed in any one of the claims 1 to 9.