CN210827430U

CN210827430U - Angle keeper and concrete precast pile

Info

Publication number: CN210827430U
Application number: CN201920770115.7U
Authority: CN
Inventors: 周兆弟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-06-23
Anticipated expiration: 2029-05-27

Abstract

The utility model discloses a corner protector and a precast concrete pile, the corner protector is used for the precast concrete pile of which the end part is provided with a connecting component, the corner protector is arranged in a mould and is close to the position of an end plate of the mould in the production process of the precast concrete pile, the connecting component is fixedly connected with an embedded sleeve on the end plate in a one-to-one correspondence detachable way, and the corner protector 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 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 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 is arranged on the radial extension part of the anchor angle. The utility model provides a corner protector prevents that the locating hole from taking place the dislocation with inlaying the cover under the limiting action of spacing portion, under connecting bolt's effect, prevents that the locating hole on the anchor angle from taking place the dislocation with the adapting unit on the precast pile.

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 precast pile manufacturing process, the angle protector is put into a precast pile mould in advance, one end of the hoop in the angle protector is in close contact with a tension plate or a fixing plate which is arranged at the end part of the precast pile mould, and is solidified with a precast pile body after the processes of tension, pouring and the like, wherein the hoop is arranged at 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 pile driving process, the anchor angle is arranged in the precast pile body, the end part of a 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, the inner side of the projecting tension, when the steel reinforcement cage is tensioned, bolts for tensioning connection sequentially penetrate through the embedded sleeves on the tensioning plates or the fixed plates and the positioning holes in the anchor corners to be connected with the sleeve nuts, and when the precast piles are butted, the connecting pieces for butting penetrate through the positioning holes in the anchor corners to be connected with the sleeve nuts.

It can be seen that the positioning hole on the anchor angle of the angle keeper should be aligned with the bushing on the tensioning plate or the fixing plate to ensure the normal operation of the tensioning operation, the positioning hole on the anchor angle of the angle keeper should be aligned with the sleeve nut on the main stress bar to ensure the smooth operation of the butt joint operation, and in the actual production, because of the errors of processing, assembling and the like, and the anchor angle is easy to deform, in addition, in the pouring process, the concrete injected into the precast pile mold can cause certain impact on the steel reinforcement cage and the angle keeper, the above factors cause the positioning hole of the anchor angle to deviate from the bushing on the tensioning plate or the fixing plate, thereby causing the position of the positioning hole and the sleeve nut to be dislocated and not aligned, blocking the connection port of the sleeve nut, causing the sleeve nut not to be normally connected, and affecting the production and use of the precast pile.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an angle protector. The angle keeper avoids the inlaying sleeve on the anchor angle deviation tensioning plate or the fixed plate, the bolt for tensioning connection sequentially penetrates the inlaying sleeve on the tensioning plate or the fixed plate and the positioning hole on the anchor angle to fix the connecting component, the coincidence of the axial lead of the connecting component and the positioning hole on the inlaying sleeve and the anchor angle is ensured, the normal operation of tensioning work is ensured, the dislocation of the positioning hole on the angle keeper anchor angle and the connecting component on the precast pile is prevented, and the normal use of the connecting component on the precast pile is ensured.

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 for a precast concrete pile with a connecting part arranged at the end part, which is arranged in a mould near the end plate of the mould in the production process of the precast concrete pile, the connecting part is fixedly connected with an inlaid sleeve on the end plate in a one-to-one correspondence and detachable manner, and the corner protector is characterized by comprising a hoop in an annular body and anchor corners which are connected to 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 part for accommodating the embedded sleeve protruding out of the inner wall of the end plate is formed in the inner side area of the limiting part, so that a limiting space for enabling the embedded sleeve to coincide with the axis of the positioning hole is formed.

Preferably, the limiting part comprises a first limiting baffle and a second limiting baffle, the outer edge of the tail end of the radial extending part faces to a plurality of first limiting baffles formed on the outer side, the second limiting baffle is arranged on the outer side of the radial extending part, and the circle centers of the positioning holes are used as centers and are distributed at intervals in the circumferential direction and extend in the axial direction.

Preferably, the first limit stop is connected to or integrally formed with the radial extension of the anchor horn.

Preferably, the second limit stop is connected to or stamped and formed from the radial extension of the anchor horn.

Preferably, the radial extension part further includes a plurality of third limit baffles located at circumferential positions of the positioning holes and formed toward the inner side.

Preferably, the end plates at two ends of the die are respectively a fixed plate and a tensioning plate capable of moving axially, and the tensioning plate is used for tensioning a main stress rib which is arranged in the die and connected with the connecting component.

Preferably, the diameter D of the positioning hole₁Is set to D₁≤D₂Wherein D is₂Is the outer diameter of the connecting member.

Preferably, the diameter D of the positioning hole₁Set up D₁≥D₃，D₃Is the largest inner diameter of the connecting part.

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

The utility model provides a corner protector is equipped with spacing portion at the locating hole periphery of its radial extension portion, spacing portion roughly takes shape along the axial direction of locating hole, its inside can form spacing space, in order to hold the bush fitting on the end plate inner wall, under the restriction of spacing portion, the locating hole axial lead on bush fitting and the anchor angle coincides, prevent that locating hole and bush fitting from taking place the dislocation, guarantee the normal clear of stretch-draw work, locating hole on the anchor angle of corner protector is aligned with the adapting unit on the main atress muscle, can make adapting unit, the axial lead of locating hole and bush fitting coincide mutually, prevent that locating hole on the anchor angle from taking place the dislocation with the adapting unit on the precast pile, in this way, even there are machining error, deformation, factor such as impact, the locating hole of anchor angle coincides with the axial lead of bush fitting and adapting unit all the time, the radial extension portion of anchor angle can not cause the shelter from the adapting unit on the precast pile, thereby guarantee adapting unit can normal use, spacing portion can also increase the structural strength at anchor angle, makes the anchor angle be difficult to take place great deformation, and then guarantees the production quality of precast pile.

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 sectional view of a connection between a corner protector and an end plate according to a first embodiment of the present invention;

fig. 2 is a schematic structural view of the connection between the angle protector and the end plate 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 first embodiment of the present invention;

FIG. 4 is an enlarged schematic view of portion A of FIG. 1;

fig. 5 is a schematic structural diagram of a single anchor angle of the angle protector according to the second embodiment of the present invention.

In the figure: 1. an angle keeper; 2. a ferrule; 3. an anchor angle; 4. an end plate; 5. sleeving; 6. a connecting plate; 7. a limiting plate; 8. positioning holes; 9. a first limit baffle; 10. a second limit baffle; 11. positioning a plate; 12. reinforcing the flanging; 13. a sleeve nut; 14. a mold; 15. and a third limit baffle.

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 "upper, lower, inner, and outer" are established based on positional relationships shown in the drawings, and the corresponding positional relationships may vary depending on the drawings, and therefore, the terms are not to be construed as absolutely limiting the scope of protection; moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

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 of an internal framework, and a spiral bar is wound and welded outside the main stress bar.

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 13 is a commonly used connecting part, one end of the sleeve is provided with a necking part which is clamped with the pier head of the stress bar, and the inner wall of the other end is provided with an internal thread (see figure 4).

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 to 4, fig. 1 is a sectional view of a connection between a corner protector and an end plate according to a first embodiment of the present invention; fig. 2 is a schematic structural view of the connection between the angle protector and the end plate 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 first embodiment of the present invention; fig. 4 is an enlarged schematic view of a portion a of fig. 1.

As shown in the drawings, in the first embodiment, the utility model provides a guarantor 1 mainly used tip is equipped with the precast concrete pile of sleeve nut 13, and in precast concrete pile production process, guarantor 1 sets up in precast concrete pile production mould 14 to near end plate 4 one side, sleeve nut 13 and the 5 one-to-one detachable fixed connection of inlaying on the end plate 4.

The angle protector 1 mainly comprises a hoop 2 and a plurality of anchor angles 3, wherein the hoop 2 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 3 is three, the anchor angles are uniformly distributed on the inner surface of the hoop 2 along the circumferential direction, the anchor angles and the hoop 2 are fixedly connected together in a welding, clamping or bonding mode and the like, the number of main stress bars of the concrete precast pile is generally more than three, therefore, the three anchor angles 3 on the angle protector 1 only correspond to three sleeve nuts 13 on the concrete precast pile one by one, and the rest sleeve nuts 13 are not matched with the anchor angles 3 of the angle protector 1.

Regarding a single anchor corner 3, the anchor corner is provided with a connecting plate 6 connected with the inner surface of the hoop 2 and a limiting plate 7 which is generally vertical to the connecting plate 6, the limiting plate 7 is a radial extension part of the anchor corner 3, the whole anchor corner 3 can be formed by punching a whole block of plate, the connecting plate 6 is generally rectangular, the width of the limiting plate 7 is gradually widened from the root part which is connected with the connecting plate 6 at an angle to the tail end, one end of the limiting plate which points to the circle center of the hoop 2 is provided with a semicircular outer edge, the limiting plate 7 is provided with a positioning hole 8 which is concentric with the semicircular outer edge, and the axis of the positioning hole 8 is parallel to the axis of the.

Wherein, but limiting plate 7 and first limit baffle 9 integrated into one piece, also can be in the same place limiting plate 7 and first limit baffle 9 fixed connection through modes such as welding and joint, limiting plate 7 and the stamping forming of 10 accessible of second limit baffle, also can be in the same place limiting plate 7 and second limit baffle 10 fixed connection through modes such as welding and joint.

The limiting plate 7 of the anchor angle 3 is provided with a limiting part which is formed along the axial direction of the positioning hole 8 on the circumferential position of the positioning hole 8, the inner side area of the limiting part forms a limiting space for accommodating the bushing 5 protruding out of the inner wall of the end plate 4, so that the bushing 5 coincides with the axial lead of the positioning hole 8, the end plate 4 is provided with fixing holes which correspond to the sleeve nuts 13 one by one, the bushing 5 is a part of the end plate 4, which extends towards the inner side, in order to sink the sleeve nuts 13, the gap between the pile end surfaces is eliminated, the stability of pile connection is ensured, the fixing holes of the bushing 5 and the end plate 4 can be integrally formed, and the bushing 5 and the end plate 4 can also be fixedly connected together in a welding, clamping or bonding.

When the reinforcement cage is tensioned, bolts for tensioning connection sequentially penetrate through the inlaying sleeve 5 on the end plate 4 and the positioning hole 8 of the anchor corner 3 to be connected with the sleeve nut 13, so that the axial leads of the inlaying sleeve 5, the positioning hole 8 and the sleeve nut 13 are overlapped.

It should be noted that the axis lines of the bushing 5, the positioning hole 8 and the sleeve nut 13 are coincident with each other, and the axis lines of the bushing, the positioning hole 8 and the sleeve nut 13 are not absolutely coincident with each other, and it should be understood that the three are substantially coincident 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 sleeve nut 13, the sleeve nut 13 is regarded as being coincident with the axis line of the positioning hole 8.

In this embodiment, spacing portion is including being located the outward flange of limiting plate 7 and towards the first limit baffle 9 of outside and being located the second limit baffle 10 in the limiting plate 7 outside, first limit baffle 9 and second limit baffle 10 use the centre of a circle of locating hole 8 as the center along circumference direction interval distribution and extend along axial direction, wherein, first limit baffle 9 that is located in the middle of the semicircular outward flange is cowl, can form the face contact with the outer peripheral face of inlaying cover 5, first limit baffle 9 that is located the 8 both sides of locating hole is the straight slab, can form line contact periphery wall with the outer peripheral face of inlaying cover 5, the inner wall through first limit baffle 9 and second limit baffle 10 contacts with the outer peripheral face of inlaying cover 5, the laminating can be realized spacing inlaying cover 5, make locating hole 8 and the position relatively fixed who inlays cover 5.

Based on the first embodiment, in at least one embodiment, the connecting plate 6 of the anchor corner 3 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 6 is an obtuse angle, and by adding the positioning plate 11, the anchoring strength between the anchor corner 3 and the concrete precast pile body may be improved, so that the connection between the anchor corner 3 and the concrete precast pile is more reliable and is not easily separated from the concrete precast pile.

In other embodiments, the two sides of the position-limiting plate 7 are provided with reinforcing flanges 12, the reinforcing flanges 12 can extend from the two sides of the position-limiting plate 7 to the two sides of the end of the connecting plate 6 connected with the connecting plate, and the two ends of the reinforcing flanges 12 are rounded. Through setting up reinforcement turn-ups 12, can improve the structural strength of limiting plate 7, make limiting plate 7 non-deformable itself, can improve the structural strength of the contained angle that limiting plate 7 and connecting plate 6 formed simultaneously, make the difficult emergence of angle of contained angle change to make whole anchor angle 3 have good stability.

In the process of producing the concrete precast pile, firstly, a steel reinforcement cage is placed into a precast pile mould 14, then the angle protector 1 is placed at the position of one end or two ends of the steel reinforcement cage close to an end plate 4, wherein the end plate 4 is a fixed plate and a tension plate capable of moving axially, the position of the angle protector 1 is adjusted, positioning holes 8 of three anchor corners 3 on the angle protector 1 are aligned with three embedding sleeves 5 on the end plate 4, then three sleeve nuts 13 at two ends of the steel reinforcement cage are aligned with the positioning holes 8, bolts for tension connection sequentially penetrate through the embedding sleeves 5 and the positioning holes 8 on the anchor corners 3 to be connected with the sleeve nuts 13, the end plate 4 in the mould 14 is relatively fixed with the steel reinforcement cage, and under the action of the bolts, the axial leads of the embedding sleeves 5, the positioning holes 8 and the sleeve nuts 13 are coincided with each other, after mould assembly (the mould of the concrete round pile is divided into an upper mould and a, the mould needs to be closed, the top of the concrete square pile is provided with an opening, the mould does not need to be closed), tension force is applied through tension equipment, stretching the reinforcement cage in the mould to keep a certain prestress, after stretching, injecting concrete slurry into the mould 14, demoulding after the concrete slurry is solidified to obtain the precast concrete pile with the angle protector 1 at one end or two ends, wherein the hoop 2 of the angle protector 1 is visible from the outside, the anchor angle 3 is solidified in the precast concrete pile and is invisible from the outside, the hoop 2 surrounds the end part of the precast concrete pile, protects the corner parts of the concrete precast pile, prevents the end part of the concrete precast pile from being damaged in the processes of transition, loading, transportation, construction and the like, when the precast pile is butted, a connecting piece for butting can penetrate through the positioning hole 8 on the anchor angle 3 to be connected with the sleeve nut 13.

The angle protector 1 is provided with a limiting part at the periphery of a positioning hole 8 of a radial extension part, the limiting part is formed along the axial direction of the positioning hole 8, a limiting space can be formed at the inner side of the angle protector 1 to accommodate an insert sleeve 5 on the inner wall of an end plate, under the limiting action of the limiting part, the axis of the insert sleeve 5 is superposed with the axis of the positioning hole 8 on an anchor corner 3, the positioning hole 8 on the anchor corner 3 of the angle protector 1 is aligned with a sleeve nut 13 on a main stress bar, so that the axis of the sleeve nut 13, the positioning hole 8 and the insert sleeve 5 are superposed, the positioning hole 8 on the anchor corner 3 and the sleeve nut 13 on a precast pile can be prevented from being dislocated, the normal tensioning operation can be ensured, and even if the factors such as processing error, deformation and impact exist, the positioning hole 8 of the anchor corner 3 is always superposed with the axis of the insert sleeve nut 5 and the sleeve nut 13, the radial extension part of the anchor, thereby guarantee that box nut 13 can normal use, spacing portion can also increase anchor angle 3's structural strength, makes anchor angle 3 be difficult to take place great deformation, and then guarantees the production quality of precast pile.

Furthermore, from the dimensional parameters of the positioning hole 8, its diameter D₁Can be set as follows:

D₃≤D₁≤D₂wherein D is₂Is the outside diameter of the collet nut 13, D₃The largest inner diameter of the collet nut 13.

After applying such dimensional parameters, D₃≤D₁≤D₂The peripheral part that can guarantee the locating hole 8 is located the terminal surface of collet nut 13, contradicts with the terminal surface of collet nut 13, can guarantee again that the peripheral part of locating hole 8 can not lead to the fact the connector of collet nut 13 to shelter from, guarantees the normal connection work of collet nut 13.

The anchor angle 3 is provided with a first limit baffle 9 and a second limit baffle 10 at the periphery of a positioning hole of a limit plate 7 of the anchor angle, the first limit baffle 9 and the second limit baffle 10 are distributed at intervals along the circumferential direction by taking the circle center of the positioning hole 8 as the center and extend along the axial direction, the inner sides of the first limit baffle 9 and the second limit baffle 10 can form a limit space to accommodate the embedded sleeve 5 on the inner wall of the end plate 4, under the combined action of the first limit baffle 9 and the second limit baffle 10, the axis lines of the insert sleeve 5 and the positioning hole 8 on the anchor angle 3 can be coincided, the positioning hole 8 on the anchor angle 3 is aligned with the sleeve nut 13 on the main stress rib, the axial leads of the sleeve nut 13, the positioning hole 8 and the embedded sleeve 5 can coincide, so that the positioning hole 8 on the anchor angle 3 and the sleeve nut 13 on the precast pile can be prevented from being staggered, and the normal operation of tensioning can be ensured.

Like this, even there are machining error, deformation, factor such as impact, anchor angle 3's locating hole 8 all the time with inlay the axial lead coincidence of cover 5, can not take place the skew, anchor angle 3's limiting plate 7 also can not lead to the fact sheltering from to box nut 13 to guarantee that box nut 13 can normal use, simultaneously, first limit baffle 9 and second limit baffle 10 can also increase anchor angle 3's structural strength, make anchor angle 3 be difficult to take place great deformation, and then guarantee precast pile's production quality.

Referring to fig. 5, fig. 5 is a schematic structural view of a single anchor angle of the angle protector according to the 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 drawing, the second embodiment is an improved scheme of the first embodiment, and is different from the first embodiment in that: and the third limiting baffle 15 is positioned at the circumferential position of the positioning hole 8 and formed towards the inner side, and a limiting space can be formed at the inner side of the third limiting baffle 15 so as to contain the end part of the sleeve nut 13 on the concrete precast pile, so that under the limiting action of the third limiting baffle 15, the sleeve nut 13 can coincide with the axial lead of the positioning hole 8, and the positioning hole 8 of the anchor angle 3 is prevented from being dislocated with the sleeve nut 13.

Under the action of the third limit baffle 15, the shaft axes of the sleeve nut 13, the positioning hole 8 and the bushing 5 are further ensured to be coincided.

So, even there are machining error, warp, factor such as impact, limiting plate 7 of anchor angle 3 also can not lead to the fact the sheltering from to box nut 13, thereby guarantee box nut 13 can normal use, and, third limit baffle 15 has the guide effect, when the installation, as long as the tip of box nut 13 gets into the inside of third limit baffle 15, can the relative positioning, when the screw in bolt, no longer need the hand-held box nut 13 of manual work to lead, help alleviating workman intensity of labour, and the production efficiency is improved, and simultaneously, third limit baffle 15 can also increase the structural strength of anchor angle 3, make anchor angle 3 be difficult to take place great deformation, and then guarantee the production quality of precast pile.

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 3 is two, four, five or more, or the connecting plates 6 and the limiting plates 7 of the anchor corners 3 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 2 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 is angle keeper 1 in the text, 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 terminal surface basic parallel and level of the front end of its cuff 2 and concrete precast pile, 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.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A kind of angle keeper, is used for the concrete precast pile that the end sets up the interconnecting piece, it is mounted to the position close to end plate of the mould in the precast concrete pile production process, the interconnecting piece and inlaying the cover on the end plate correspond to the detachable fixed connection one by one, wherein, including the hoop taking the form of the ring body and connecting to the said hoop inner surface and anchor angle distributed in the circumference; 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 part for accommodating the embedded sleeve protruding out of the inner wall of the end plate is formed in the inner side area of the limiting part, so that a limiting space for enabling the embedded sleeve to coincide with the axis of the positioning hole is formed.

2. The angle keeper of claim 1, wherein the limiting portion comprises a first limiting baffle and a second limiting baffle, the outer edge of the end of the radial extending portion faces the outer side to form a plurality of first limiting baffles, the outer side of the radial extending portion is provided with the second limiting baffle, and the first limiting baffles and the second limiting baffles are distributed at intervals in the circumferential direction by taking the circle center of the positioning hole as the center and extend in the axial direction.

3. A corner protector according to claim 2 wherein the first limit stop is connected to or integrally formed with the radially extending portion of the anchor corner.

4. A corner protector according to claim 2 wherein the second limit stop is connected to or stamped from the radial extension of the anchor corner.

5. The angle keeper of claim 1, wherein the radially extending portion further comprises a plurality of third limiting stops formed inwardly and circumferentially of the positioning holes.

6. A corner protector according to claim 1 wherein the end plates at each end of the mould are a fixed plate and an axially movable tension plate for tensioning the main load bearing bars located within the mould and connected to the connecting members.

7. A corner protector according to claim 1 wherein the diameter D of the locating hole₁Is set to D₁≤D₂Wherein D is₂Is the outer diameter of the connecting member.

8. A corner protector according to claim 7 wherein the diameter D of the locating hole₁Set up D₁≥D₃，D₃Is the largest inner diameter of the connecting part.

9. A precast concrete pile, comprising a precast concrete pile body and angle protectors arranged at one end or two ends of the precast concrete pile body, wherein the angle protectors are the angle protectors as claimed in any one of the claims 1 to 8.