CN210103276U

CN210103276U - Lifting hook and concrete precast pile

Info

Publication number: CN210103276U
Application number: CN201920901335.9U
Authority: CN
Inventors: 周兆弟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-02-21
Anticipated expiration: 2029-06-14

Abstract

The utility model discloses a lifting hook and a concrete precast pile, which are used as hoisting parts pre-embedded in the concrete precast pile, and comprise an anchoring part pre-embedded in the concrete precast pile and a hoisting part exposed out of the concrete precast pile for hoisting; the anchor portion is including the interior anchor portion that is located both sides, interior anchor portion with it is even as an organic whole to lift by crane the portion, two interior anchor portion is equipped with interior anchor rib and at least one of them respectively interior anchor rib is for the components of a whole that can function independently connection formula structure, perhaps, two interior anchor portion is equipped with same interior anchor rib just interior anchor rib is for the components of a whole that can function independently connection formula structure. This lifting hook need not cut off the spiral muscle of steel reinforcement cage when pre-buried just can be smooth stretch into the steel reinforcement cage, can not destroy the continuity of spiral muscle, makes the spiral muscle keep complete state, and then has guaranteed the product quality and the performance of concrete precast pile.

Description

Lifting hook and concrete precast pile

Technical Field

The utility model relates to a precast concrete pile technical field especially relates to precast concrete pile's lifting hook. The utility model discloses still relate to and be equipped with the concrete precast pile of lifting hook.

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.

For the concrete precast pile, in order to ensure the structural strength and the connection strength of the precast pile, any strip-shaped object meeting the building strength requirement, such as round steel, deformed steel bar, and PC steel bar, is generally adopted to form the main stress bar of the reinforcement cage, and the continuous spiral bar is generally wound and welded outside the main stress bar.

In the processes of production, transportation, construction and the like, the concrete precast pile is often required to be lifted, and because most of the concrete precast piles are not beneficial to being directly lifted in shape, a lifting part is generally required to be implanted in the concrete precast pile to be used as a lifting point when the concrete precast pile is produced for facilitating lifting.

The main form of the hoisting part is a hoisting hook, the hoisting hook can be positioned in various ways when being implanted, for example, before concrete pouring, cushion blocks made of foam plastics and the like and easy to clean materials are clamped on a reinforcement cage, the cushion blocks are provided with grooves for accommodating the hoisting hook, a hoisting part of the hoisting hook is arranged in the grooves, the top surface of the hoisting hook is lower than the plane of a pile body, after the concrete pouring is finished, the cushion blocks in the concrete precast pile are cleaned, and a containing cavity between the concrete precast pile and the hoisting hook, which is shown after the cushion blocks are cleaned, is a hoisting space, and the like.

The lifting hook is generally bent by a section of reinforcing steel bar through a bending process and is formed, the lifting hook is provided with an anchoring part and a lifting part, the anchoring part is located inside the precast pile body, the lower end of the left vertical part and the lower end of the right vertical part of the lifting hook are provided with an upward bending angle, the lifting hook exposes the upper end of the precast pile body to form the lifting part, the lifting part is not higher than the surface of the precast pile body, and the precast pile body is provided with an inward concave part corresponding to the lifting hook at a lifting point position to accommodate the lifting part of the lifting hook.

In order to guarantee the bonding strength of the lifting hook and the precast pile body, the lifting hook is prevented from being separated from the precast pile body, the lifting hook can completely bear the weight of the concrete precast pile when being lifted, the anchoring part needs to have enough anchoring depth in the longitudinal direction, and the bending angle of the anchoring part needs to have enough length in the transverse direction or the axial direction. But can cause another problem from this, that is the lifting hook can't be smooth put into the steel reinforcement cage, especially the main atress muscle interval at the steel reinforcement cage is less, under the comparatively intensive condition of winding of spiral muscle, the mouth that penetrates that main atress muscle and spiral muscle provided is not enough to make the lifting hook pass, even constantly adjust the lifting hook gesture and wear to wind and also can't place the lifting hook on the steel reinforcement cage.

To this, when pre-buried lifting hook, a plurality of spiral muscle that need cut steel reinforcement cage usually, just have enough space to place the lifting hook on the steel reinforcement cage, make the anchor portion of lifting hook get into in the steel reinforcement cage, and cut the partial spiral muscle of lifting point, can make originally continuous winding spiral muscle destroyed, become no longer continuous, divide into the discontinuous spiral muscle that the multistage breaks off each other by complete spiral muscle, the structural strength of steel reinforcement cage can be weakened to this kind of mode, reduce concrete precast pile's product quality and performance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a lifting hook. The lifting hook can smoothly extend into the reinforcement cage without shearing off the spiral reinforcement of the reinforcement cage when being embedded.

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

In order to achieve the above object, the present invention provides a hook for being pre-embedded in a precast concrete pile as a hoisting member, comprising an anchoring part for being pre-embedded inside the precast concrete pile and a hoisting part exposed out of the precast concrete pile for hoisting; the anchor portion is including the interior anchor portion that is located both sides, interior anchor portion with it is even as an organic whole to lift by crane the portion, two interior anchor portion is equipped with interior anchor rib and at least one of them respectively interior anchor rib is for the components of a whole that can function independently connection formula structure, perhaps, two interior anchor portion is equipped with same interior anchor rib just interior anchor rib is for the components of a whole that can function independently connection formula structure.

Preferably, the inner anchor part and the lifting part of the lifting hook are formed by bending steel bars, the inner anchor part comprises a straight line section, and the inner anchor reinforcing part is connected to the lower end of the straight line section in a split connection mode.

Preferably, the inner anchor reinforcement part comprises an inner anchor reinforcement rod, and one end or the middle part of the inner anchor reinforcement rod is connected with the lower end of the straight line section through a connecting piece or a connecting structure.

Preferably, the connecting piece includes the pin, interior anchor stiffener has seted up first pin hole, the lower extreme of straightway has seted up the second pin hole, the pin penetrates first pin hole and second pin hole in order to be connected interior anchor stiffener and straightway.

Preferably, the connecting structure comprises at least one of a welding structure, a clamping structure, an adhesive structure, a screwing structure, a sleeving structure or a binding structure or a combination thereof.

Preferably, the bolt joint structure comprises an internal thread arranged on the straight line section and an external thread arranged on the body of the inner anchor reinforcing rod, and the inner anchor reinforcing rod and the straight line section are connected through the matching of the external thread and the internal thread.

Preferably, the lower end of the straight line segment is provided with a support foot which is bent upwards, and the inner anchor reinforcing rod is arranged in a bending angle area of the support foot so as to be supported upwards by the support foot.

Preferably, a clamping groove capable of being clamped with the supporting foot is formed in the rod body of the inner anchor reinforcing rod in a bending mode.

Preferably, the length direction of the inner anchor reinforcing rod is vertical to the plane where the inner anchor part and the hoisting part are located; or the length direction of the inner anchor reinforcing rod is parallel to the plane where the inner anchor part and the hoisting part are located; or the inner anchor reinforcing rod, the inner anchor part and the hoisting part are positioned on the same plane; or the length direction of the inner anchor reinforcing rod and the plane where the inner anchor part and the hoisting part are located form an included angle smaller than or equal to 90.

Preferably, the inner anchor reinforcing part comprises an inner anchor head, and the inner anchor head is connected with the lower end of the straight line section through a connecting piece or a connecting structure so as to form an anti-dropping part with the enlarged radial size at the lower end of the straight line section.

Preferably, the connecting piece includes the pin, first pin hole has been seted up to the side of interior anchor end, the lower extreme of straightway has seted up the second pin hole, the pin penetrates first pin hole and second pin hole in order to be connected interior anchor end and straightway.

Preferably, the bolt connection structure comprises an external thread arranged on the straight line section and an internal thread arranged on the end head of the inner anchor, and the end head of the inner anchor is connected with the straight line section through the matching of the internal thread and the external thread.

Preferably, the lower ends of the inner anchor parts at the two sides are connected in the middle to form a closed structure, and the two inner anchor parts share the same inner anchor reinforcing part.

Preferably, the inner anchor reinforcing part is an inner anchor reinforcing rod which is positioned at the closed part of the lower end of the inner anchor part so as to be upwards supported by the closed part of the lower end of the inner anchor part; or the inner anchor reinforcing rod is positioned below the closed part at the lower end of the inner anchor part, and one end or the middle part of the inner anchor reinforcing rod is connected with the closed part at the lower end of the inner anchor part.

Preferably, the hoisting part and the inner anchor part are overall elliptical with the major axis in the vertical direction.

In addition to above-mentioned lifting hook, the utility model also provides a concrete precast pile, including the precast pile body with pre-buried in the lifting hook of precast pile body, a serial communication port, the lifting hook is the arbitrary one of the aforesaid lifting hook, the top of the portion of lifting by crane of lifting hook is the arc.

The utility model provides a lifting hook is equipped with and is used for pre-buried anchor portion inside the precast concrete pile, and this anchor portion mainly comprises two parts, and partly is interior anchor portion, and another part is interior anchor rib, and wherein, interior anchor portion and exerted portion of lifting by crane are even as an organic whole, on this basis, the utility model discloses still with one of them or two interior anchor rib designs for dividing the body connected structure. Like this, when stretching into the lifting hook, can be according to the concrete structure of steel reinforcement cage, clearance shape and size between the reinforcing bar, stretch into the steel reinforcement cage with the lifting hook with more nimble mode, if the lifting hook is whole can not stretch into the steel reinforcement cage directly or through wearing around the gimmick, then can separate one or two interior anchor rib and interior anchor portion earlier, because interior anchor rib and interior anchor portion after the separation are for whole lifting hook, the size very reduces, consequently, under the condition of not cutting the spiral muscle, just can get into the steel reinforcement cage respectively, then be a lifting hook of accomplishing at steel reinforcement cage internal connection, thereby avoid cutting the spiral muscle when stretching into the lifting hook, can not destroy the continuity of spiral muscle, make the spiral muscle keep complete state, and then guaranteed the product quality and the performance of concrete precast pile.

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

Drawings

Fig. 1 is a schematic structural view of a first type of lifting hook disclosed in an embodiment of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic structural view of a neck formed on the body of the inner anchor reinforcing rod;

fig. 4 is a schematic structural view of a second type of hook disclosed in the embodiment of the present invention;

FIG. 5 is a cross-sectional view B-B of FIG. 4;

fig. 6 is a schematic structural view of a third hook disclosed in the embodiment of the present invention;

fig. 7 is a schematic structural view of a fourth hook disclosed in the embodiment of the present invention;

fig. 8 is a schematic structural view of a fifth type of hook disclosed in the embodiment of the present invention;

fig. 9 is a schematic structural view of a sixth type of hook disclosed in the embodiment of the present invention;

fig. 10 is a schematic structural view of a seventh type of hook disclosed in the embodiment of the present invention;

fig. 11 is a schematic structural view of an eighth type of hook disclosed in the embodiment of the present invention;

FIG. 12 is a cross-sectional view C-C of FIG. 11;

fig. 13 is a schematic structural view of a ninth type of hook disclosed in the embodiment of the present invention;

fig. 14 is a schematic structural view of a tenth type of hook disclosed in the embodiment of the present invention;

fig. 15 is a schematic structural view of an eleventh hook disclosed in the embodiment of the present invention;

FIG. 16 is a D-D view of FIG. 15;

fig. 17 is a schematic structural view of a twelfth type of hook disclosed in the embodiment of the present invention;

FIG. 18 is a schematic view of the relative position of the hook in the reinforcement cage;

fig. 19 is a schematic cross-sectional view of a concrete precast pile according to an embodiment of the present invention.

In the figure:

1. lifting hook 2, precast pile body 3, main stress rib 4, spiral rib 5, anchoring part 5-1, inner anchoring part 5-2, inner anchor reinforcing rod 5-3, supporting foot 5-4, inner anchor end 6, lifting part 7, inward concave part 8, pin 9, clamping groove 10, hoop 11, sleeve

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 document, terms such as "upper, lower, left, right" and the like are established based on positional relationships shown in the drawings, and the corresponding positional relationships may vary depending on the drawings, and therefore, they are not to be construed as absolute limitations on 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.

The utility model discloses a study the lifting hook of concrete precast pile, fully considered shape, the size of lifting hook to stretching into steel reinforcement cage's influence, improve from the angle of lifting hook self structure to reduce as far as because of putting into the influence that the lifting hook caused to steel reinforcement cage.

Referring to fig. 1 and 2, fig. 1 is a schematic structural view of a first anti-corrosion concrete precast pile disclosed in an embodiment of the present invention; fig. 2 is a sectional view a-a of fig. 1.

As shown in the figure, in an embodiment, the provided hook 1 is used to be embedded in a concrete precast pile as a lifting component, and the embedded interface after embedding is used as a boundary, the hook 1 can be divided into two parts, namely an anchoring part 5 embedded in the concrete precast pile and a lifting part 6 exposed out of the concrete precast pile for lifting.

The anchoring part 5 is provided with inner anchoring parts 5-1 positioned at two sides, the inner anchoring parts 5-1 are connected with the lifting part 6 into a whole, the two inner anchoring parts 5-1 are respectively provided with inner anchoring reinforcing parts, and the two inner anchoring reinforcing parts are in split connection type structures.

The inner anchor part 5-1 and the lifting part 6 of the lifting hook 1 are bent into a shape like a Chinese character 'ji' by a section of steel bar, the top of the lifting part 6 is arc, the main body part of the inner anchor part 5-1 is in a vertical linear shape, the inner anchor reinforcing part is connected to the lower end of the inner anchor part 5-1 in a split connection mode, the inner anchor reinforcing part is an inner anchor reinforcing rod 5-2, the middle part of the inner anchor reinforcing rod 5-2 is connected with the lower end of the inner anchor part 5-1, and the length direction of the inner anchor reinforcing rod 5-2 is perpendicular to the planes of the inner anchor part 5-1 and the lifting part 6.

Specifically, an inner anchor reinforcing rod 5-2 is connected with an inner anchor part 5-1 through a pin 8, the inner anchor reinforcing rod 5-2 is provided with a longitudinal first pin hole, the lower end of the inner anchor part 5-1 is provided with a longitudinal second pin hole, the pin 8 penetrates through the first pin hole and the second pin hole to connect the inner anchor reinforcing rod 5-2 with the inner anchor part 5-1, the lower end of the inner anchor part 5-1 is provided with an upward bent support foot 5-3, the inner anchor reinforcing rod 5-2 is arranged in a bending angle area of the support foot 5-3, the inner anchor reinforcing rod 5-2 is upwards supported by the supporting foot 5-3, the bending size of the supporting foot 5-3 is relatively small, and the whole width of the inner anchor part 5-1 with the supporting foot 5-3 is obviously reduced compared with the existing lifting hook, so that the steel reinforcement cage is easy to put into.

The combination strength of the lifting hook 1 and the precast pile body 2 can be improved through the inner anchor reinforcing rods 5-2, the lifting hook 1 is prevented from being separated from the precast pile body 2, and the lifting hook 1 can completely bear the weight of the concrete precast pile when being lifted.

When the lifting hook 1 is placed into a reinforcement cage, the inner anchor part 5-1 and the lifting part 6 can be taken as a whole to be placed into the reinforcement cage, then the two inner anchor reinforcing rods 5-2 are respectively placed into the reinforcement cage and connected with the inner anchor part 5-1 of the lifting hook, so that the lifting hook 1 which is implanted into the reinforcement cage and has a complete shape can be formed, and spiral ribs of the reinforcement cage do not need to be cut off in the placing process.

As an improvement, the inner anchor reinforcing rod 5-2 and the inner anchor part 5-1 can also be connected without a pin 8, but a clamping groove 9 (see figure 3) is formed on the rod body of the inner anchor reinforcing rod 5-2 in a bending mode, the opening of the clamping groove 9 faces downwards, the width of the clamping groove is slightly larger than the diameter of the supporting foot 5-3, the inner anchor reinforcing rod 5-2 can be clamped on the supporting foot 5-3 by arranging the clamping groove 9, even if the clamping relation is not formed between the inner anchor reinforcing rod and the supporting foot, the inner anchor reinforcing rod 5-2 can keep balance under the self-weight effect, and further, the connection through other connecting pieces is not needed.

Of course, the use of the pin 8 for reinforcement is not entirely excluded in this construction in order to increase the strength of the connection of the inner anchor reinforcing rod 5-2 to the inner anchor portion 5-1.

The inner anchor reinforcing rods 5-2 may be connected to the inner anchor portion 5-1 at the middle portion or connected to the inner anchor portion 5-1 at the end portion, and in the case where the end portion is connected to the inner anchor portion 5-1, there may be two cases, one in which the two inner anchor reinforcing rods 5-2 are located on the same side of the inner anchor portion 5-1, and the other in which the two inner anchor reinforcing rods 5-2 are located on both sides of the inner anchor portion 5-1, respectively.

Referring to fig. 4 and 5, fig. 4 is a schematic structural view of a second type of hook disclosed in the embodiment of the present invention; fig. 5 is a sectional view B-B of fig. 4.

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 figures, the difference with respect to the first embodiment is mainly that the lifting hook 1 provided in this embodiment is not provided with the upward-bending supporting foot 5-3 at the lower end of the inner anchor portion 5-1, which is equivalent to omitting the supporting foot 5-3 on the basis of the first embodiment, the inner anchor reinforcing rod 5-2 and the inner anchor portion 5-1 are still connected by the pin 8, the inner anchor reinforcing rod 5-2 is provided with a first transverse pin hole, the lower end of the inner anchor portion 5-1 is provided with a second transverse pin hole, the pin 8 penetrates through the first pin hole and the second pin hole to connect the inner anchor reinforcing rod 5-2 and the inner anchor portion 5-1, and the rest of the structure is substantially the same as that of the first embodiment, please refer to the above.

The lifting hook 1 has a simpler structure, can save the working procedure of processing the supporting feet 5-3 at the lower ends of the inner anchor parts 5-1, improves the production efficiency and saves the cost, and simultaneously, under the condition of no supporting feet 5-3, the whole width of the inner anchor parts 5-1 is further reduced, the interference of reinforcement cages is not easy to occur, and the smooth placement of the reinforcement cages is facilitated.

Please refer to fig. 6, fig. 6 is a schematic structural diagram of a third hook disclosed in the embodiment of the present invention.

As shown in the figures, the difference with respect to the first embodiment is mainly that the lifting hook 1 provided in this embodiment is provided with an upwardly bent support foot 5-3 at the lower end of the inner anchor portion 5-1, the inner anchor reinforcing rod 5-2, the inner anchor portion 5-1 and the lifting portion 6 are in the same plane, one end portion of the inner anchor reinforcing rod 5-2 is overlapped above the support foot 5-3, the inner anchor reinforcing rod 5-2 and the inner anchor portion 5-1 are still connected by a pin 8, the inner anchor reinforcing rod 5-2 is provided with a first oblique pin hole, the lower end of the inner anchor portion 5-1 is provided with a second oblique pin hole, the pin 8 penetrates through the first pin hole and the second pin hole to connect the inner anchor reinforcing rod 5-2 and the inner anchor portion 5-1, which is equivalent to that on the basis of the first embodiment, the direction of the inner anchor reinforcing rod 5-2 is adjusted, the inner anchor reinforcing rods 5-2 are extended obliquely upward from both sides in the plane of the inner anchor portion 5-1 and the suspending portion 6, and the rest of the structure is substantially the same as that of the first embodiment described above, please refer to the above.

The shape of the lifting hook 1 is more similar to that of an integral lifting hook, the lifting hook has the service performance approximately equivalent to that of the integral lifting hook, and compared with the integral lifting hook, the inner anchor reinforcing rod 5-2 is of a split connection structure, so that a reinforcement cage can be smoothly put into the lifting hook under the condition of not damaging the reinforcement cage.

Please refer to fig. 7, fig. 7 is a schematic structural diagram of a fourth hook disclosed in the embodiment of the present invention.

As shown in the figures, the difference with respect to the first embodiment mainly lies in that the inner anchor portion 5-1 of the lifting hook 1 provided in this embodiment is connected with the inner anchor reinforcing rod 5-2 through a threaded structure, the lower ends of the two vertical straight-line segments of the inner anchor portion 5-1 are provided with horizontal threaded holes, one end of the inner anchor reinforcing rod 5-2 is provided with corresponding external threads, the two inner anchor reinforcing rods 5-2 are respectively in threaded connection with the two vertical straight-line segments of the inner anchor portion 5-1 through external threads thereof, so as to form a complete lifting hook, and the rest of the structure is substantially the same as that of the first embodiment, please refer to the above.

The lifting hook 1 is relatively close to a traditional integrated lifting hook in the whole shape, has the service performance generally equivalent to that of the integrated lifting hook, and compared with the integrated lifting hook, as the inner anchor reinforcing rod 5-2 is of a split connection structure, the lifting hook can be smoothly placed into a reinforcement cage under the condition of not damaging the reinforcement cage, the thread structure is easy to process, after the main body part of the lifting hook is placed into the reinforcement cage, only the inner anchor reinforcing rod 5-2 needs to be screwed at the lower end of the inner anchor part 5-1, and the field operation is easy to carry out.

Please refer to fig. 8, fig. 8 is a schematic structural diagram of a fifth type of hook disclosed in the embodiment of the present invention.

As shown in the figures, the difference with respect to the first embodiment is mainly that the hook 1 provided in this embodiment is provided with an upward-bending supporting foot 5-3 at the lower end of the inner anchoring portion 5-1, the inner anchoring reinforcing rod 5-2, the inner anchoring portion 5-1 and the lifting portion 6 are in the same plane, the inner anchoring reinforcing rod 5-2 is a hollow structure (only one end of the inner anchoring reinforcing rod may be a hollow structure), and is sleeved on the supporting foot 5-3 of the inner anchoring portion 5-1 through an internal through hole, two inner anchoring reinforcing rods 5-2 extend obliquely upward from two sides of the hook body, and the rest of the structure is substantially the same as that of the first embodiment, please refer to the above.

The lifting hook 1 is also relatively close to the traditional integrated lifting hook in the whole shape, has the service performance generally equivalent to that of the integrated lifting hook, and compared with the integrated lifting hook, as the inner anchor reinforcing rod is of a split connection structure, the steel reinforcement cage can be smoothly placed in the lifting hook under the condition of not damaging the steel reinforcement cage, moreover, the support foot 5-3 and the inner anchor reinforcing rod 5-2 are inclined upwards in an inclined mode, the support foot 5-3 and the inner anchor reinforcing rod 5-2 are not required to be further connected after being sleeved, and under the action of gravity, the inner anchor reinforcing rod 5-2 can be stably kept on the support foot 5-3, so that the field operation is very easy.

Please refer to fig. 9, fig. 9 is a schematic structural diagram of a sixth type of hook disclosed in the embodiment of the present invention.

As shown in the figures, the difference with respect to the first embodiment is mainly that the hook 1 provided in this embodiment is provided with an upward bent support foot 5-3 at the lower end of the inner anchoring portion 5-1, the inner anchor reinforcing rod 5-2 is in the same plane with the inner anchoring portion 5-1 and the lifting portion 6, two inner anchor reinforcing rods 5-2 extend obliquely upward from both sides of the hook body, one end of each inner anchor reinforcing rod 5-2 is respectively superposed above the corresponding support foot 5-3 and is connected by one, two or three hoops 10 (or clips), and the rest of the structure is substantially the same as that of the first embodiment, please refer to the above.

The lifting hook 1 is relatively close to the traditional integrated lifting hook in the whole shape, has the service performance generally equivalent to that of the integrated lifting hook, and compared with the integrated lifting hook, the inner anchor reinforcing rod 5-2 is of a split connection structure, so that a reinforcement cage can be smoothly placed in the lifting hook under the condition of not damaging the reinforcement cage, and the hoop 10 (or the hoop) is relatively easy to operate on site.

Please refer to fig. 10, fig. 10 is a schematic structural diagram of a seventh type of hook disclosed in the embodiment of the present invention.

As shown in the figures, the difference with respect to the first embodiment mainly lies in that the hook 1 provided in this embodiment is provided with an upward-bending supporting foot 5-3 at the lower end of the left vertical straight line section of the inner anchoring portion 5-1, the left inner anchoring reinforcing rod 5-2 is perpendicular to the plane where the inner anchoring portion 5-1 and the lifting portion 6 are located, the left inner anchoring reinforcing rod 5-2 is placed in the corner region of the supporting foot 5-3, the supporting foot 5-3 supports the left inner anchoring reinforcing rod 5-2 upwards, and the two are connected by a pin 8, and the right inner anchoring reinforcing rod 5-2 and the inner anchoring portion 5-1 are an integral structure formed by bending a steel bar, and the rest of the structure is substantially the same as that of the first embodiment, please refer to the above.

According to the lifting hook 1, only the left or right inner anchor reinforcing rods 5-2 are designed into a split connection type structure, the inner anchor reinforcing rods 5-2 on the other side are still of an integrated structure, the whole lifting hook 1 can be split into two parts instead of three parts, although the part with the integrated inner anchor reinforcing rods 5-2 is relatively large in width compared with the embodiment after being split, the width is greatly reduced compared with that of the traditional lifting hook, therefore, a reinforcement cage can be placed in the lifting hook without shearing spiral ribs, and when the lifting hook 1 is recombined into a complete lifting hook, only one side needs to be connected, the connection operation amount is only half of that of the embodiment, and the operation efficiency is obviously improved.

It is understood that the split connection manner in the above embodiments can be applied to the present embodiment, so as to obtain more embodiments.

In addition to the above, the inner anchor reinforcing rod 5-2 may be connected to the inner anchor portion 5-1 by welding or bonding, for example, on the basis of the first embodiment, the inner anchor reinforcing rod 5-2 and the inner anchor portion 5-1 may be preliminarily positioned by bonding with an adhesive, an instant glue, or the like instead of the pin 8, and after the pouring and curing are completed, even if the adhesive fails, the inner anchor portion 5-1 can still transmit force to the inner anchor reinforcing rod 5-2 through the supporting leg 5-3, thereby performing a reliable anchoring function.

Referring to fig. 11 and 12, fig. 11 is a schematic structural view of an eighth hook disclosed in the embodiment of the present invention; fig. 12 is a cross-sectional view taken along line C-C of fig. 11.

As shown in the figures, the difference from the first embodiment is mainly that the lifting hook 1 provided in this embodiment changes the inner anchor reinforcing rod 5-2 into the inner anchor head 5-4, the inner anchor head 5-4 is connected to the lower end of the inner anchor portion 5-1 through a connecting member or a connecting structure, so as to form an anti-dropping portion with a radially enlarged size at the lower end of the inner anchor portion 5-1, and the structure of the inner anchor head 5-4 is not limited to a cylindrical shape, but may be other shapes such as a rectangular parallelepiped, a polygonal body, a plate-shaped body, or a combination thereof.

Specifically, the inner anchor end 5-4 and the inner anchor portion 5-1 can be connected by a pin, a first pin hole is formed in the side face of the inner anchor end 5-4, a second pin hole is formed in the lower end of the inner anchor portion 5-1, and the pin penetrates through the first pin hole and the second pin hole to connect the inner anchor end 5-4 and the inner anchor portion 5-1.

The inner anchor end 5-4 and the inner anchor part 5-1 can also be connected by at least one or a combination of a welding structure, a clamping structure, a bonding structure, a screw connection structure, a sleeving structure or a binding structure.

If a screw connection structure is adopted, an external thread may be provided on the inner anchor portion 5-1, an internal thread may be provided on the inner anchor tip 5-4, the inner anchor tip 5-4 and the inner anchor portion 5-1 are connected by the fit of the internal thread and the external thread, and the rest of the structure is substantially the same as that of the first embodiment described above, please refer to the above.

On the basis, in order to improve the connection strength of the inner anchor head 5-4 and the precast pile body 2, the outer surface of the inner anchor head 5-4 can be designed into a shape with different concave-convex or grooves (see fig. 13), or the lower end of the inner anchor part 5-1 is bent upwards to form a supporting foot 5-3, the inner anchor head 5-4 is supported upwards through the supporting foot 5-3 (see fig. 14), and the inner anchor part 5-1 and the inner anchor head 5-4 are prevented from being separated from each other under the action of a large external force.

Please refer to fig. 15, fig. 16, and fig. 17, in which fig. 15 is a schematic structural view of an eleventh hook disclosed in the embodiment of the present invention; FIG. 16 is a D-D view of FIG. 15; fig. 17 is a schematic structural view of a twelfth type of hook disclosed in the embodiment of the present invention.

As shown in the figures, in other embodiments, the lower ends of the inner anchoring portions 5-1 on both sides of the hook 1 are connected at the middle to form a closed structure integrally, and both share the same inner anchoring reinforcement portion.

Specifically, the hoisting part 6 and the inner anchor part 5-1 are integrally in an oval shape with the major axis in the vertical direction, the inner anchor reinforcing part is an inner anchor reinforcing rod 5-2, and the inner anchor reinforcing rod 5-2 is positioned above the closed part at the lower end of the inner anchor part 5-1 so as to support the inner anchor reinforcing rod 5-2 upwards from the closed part at the lower end of the inner anchor part 5-1.

Or, a sleeve 11 is arranged at the closed part at the lower end of the inner anchor part 5-1, and the inner anchor reinforcing rod 5-2 is inserted below the closed part at the lower end of the inner anchor part 5-1.

After the concrete precast pile is embedded, the part of the elliptical main body of the hook exposed outwards forms a hanging ring, namely a lifting part 6, and the unexposed inner anchor part 5-1 and the inner anchor reinforcing rod 5-2 form an anchoring part 5 which is solidified in the concrete precast pile.

Except the above-mentioned lifting hook, the utility model also provides a concrete precast pile. Referring to fig. 18 and 19, fig. 18 is a schematic view showing a relative position of a hook being placed in a reinforcement cage; fig. 19 is a schematic cross-sectional view of a concrete precast pile according to an embodiment of the present invention.

As shown in the figure, in an embodiment, the utility model provides an anticorrosive concrete precast pile mainly comprises precast pile body 2 and pre-buried steel reinforcement cage in precast pile body 2, and wherein, steel reinforcement cage has many main atress muscle 3 that extend along axial direction to and twine and locate main atress muscle 3 outlying spiral muscle 4.

Precast pile body 2 is provided with two at least pre-buried lifting hooks 1 in hoisting position along length direction on the top surface of pile body to lift by crane the operation through equipment such as purlin car, portal crane, hoist, these hoisting equipment can directly be connected through lifting hook and 1 colluding of lifting hook, also can collude with 1 the lifting hook through middle adaptor and hang and be connected, wherein the lifting hook be above arbitrary lifting hook, the central line of lifting hook portion both can be parallel with the length direction of precast pile, also can be the length direction of perpendicular to precast pile.

In the process of producing the concrete precast pile, the steel reinforcement cage is firstly placed into a forming die, then the angle protector is placed at one end or two ends of the steel reinforcement cage, and the position of the angle protector is adjusted, so that the positioning holes of the anchor angle on the angle protector are aligned with the sleeve nuts at two ends of the steel reinforcement cage.

And then, a bolt for tension connection penetrates through a positioning hole on the anchor angle to be connected with a sleeve nut, so that an end plate (or a tension plate) of the mould is relatively fixed with the steel reinforcement cage, tension force is applied through tension equipment to tension the steel reinforcement cage in the forming mould so as to keep a certain prestress, after the tension is finished, a lifting hook 1 is pre-embedded at a lifting point, and then concrete slurry is injected into the forming mould.

And after the concrete slurry is cured and the like, demolding is carried out, and the concrete precast pile with the angle protector at one end or two ends and the lifting hook 1 on the pile body can be obtained.

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 vertical straight-line segment of the hook 1 is designed as an oblique segment with gradually decreasing distance from top to bottom, or the inner anchor reinforcing rod 5-2 is designed as a bent shape or an "S" shape, or the two inner anchor reinforcing rods 5-2 shown in fig. 7 are connected into a whole, and so on. This is not illustrated here, since many implementations are possible.

In addition, the technical solutions between the embodiments can be combined with each other, but should be based on the realization of those skilled in the art. If the technical solutions are contradictory or cannot be combined, it should be considered that the combination of the technical solutions does not exist, and is not within the protection scope of the present invention.

It is right above that the utility model provides a lifting hook 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 lifting hook is used for being embedded in a precast concrete pile to serve as a lifting part and is characterized by comprising an anchoring part and a lifting part, wherein the anchoring part is embedded in the precast concrete pile, and the lifting part is exposed out of the precast concrete pile to lift; the anchor portion is including the interior anchor portion that is located both sides, interior anchor portion with it is even as an organic whole to lift by crane the portion, two interior anchor portion is equipped with interior anchor rib and at least one of them respectively interior anchor rib is for the components of a whole that can function independently connection formula structure, perhaps, two interior anchor portion is equipped with same interior anchor rib just interior anchor rib is for the components of a whole that can function independently connection formula structure.

2. A lifting hook as claimed in claim 1, wherein the inner anchor portion and the lifting portion of the lifting hook are formed by bending steel bars, the inner anchor portion comprises a straight section, and the inner anchor reinforcing portion is connected to the lower end of the straight section in a split connection.

3. A lifting hook as claimed in claim 2, wherein the inner anchor reinforcement comprises an inner anchor reinforcement rod, one end or a middle portion of which is connected to a lower end of the inner anchor portion by a connecting member or a connecting structure; or

The inner anchor reinforcing part comprises an inner anchor end head, and the inner anchor end head is connected with the lower end of the inner anchor part through a connecting piece or a connecting structure so that an anti-falling part with the enlarged radial size is formed at the lower end of the inner anchor part.

4. A lifting hook as claimed in claim 3, wherein the connector comprises a pin, the inner anchor reinforcing rod or end has a first pin hole formed therein, the lower end of the inner anchor portion has a second pin hole formed therein, and the pin is inserted into the first and second pin holes to connect the inner anchor reinforcing rod or end with the inner anchor portion.

5. A lifting hook as claimed in claim 3, wherein the attachment formation comprises at least one of a welded, snap-fit, adhesive, screw-on, socket or lashed formation.

6. A lifting hook as claimed in claim 5, wherein the screw-on arrangement comprises an internal thread provided in the inner anchoring portion and an external thread provided on the inner anchor reinforcing rod or the inner anchor head, the inner anchor reinforcing rod or the inner anchor head being connected to the inner anchoring portion by the external thread engaging the internal thread.

7. A lifting hook as claimed in claim 3, wherein the lower end of the inner anchor portion is provided with a foot bent upwardly, and the inner anchor reinforcing rod is disposed in a corner region of the foot to be supported upwardly by the foot; or

The lower extreme of interior anchor portion is equipped with the support foot of kickup, interior anchor stiffener is arranged in the bent angle region of support foot, with by the support foot upwards bearing interior anchor stiffener, the pole body of interior anchor stiffener is gone up the bending forming have can the joint in the draw-in groove of support foot.

8. A lifting hook as claimed in claim 1, wherein the lower ends of the inner anchor portions on both sides are joined at the middle to form a closed structure integrally therewith, both of which share the same inner anchor reinforcement portion.

9. A lifting hook as claimed in claim 8, wherein the inner anchor reinforcement is an inner anchor reinforcement which is located at the closure of the lower end of the inner anchor portion to bear upwardly from the closure of the lower end of the inner anchor portion; or the inner anchor reinforcing rod is positioned below the closed part at the lower end of the inner anchor part, and one end or the middle part of the inner anchor reinforcing rod is connected with the closed part at the lower end of the inner anchor part.

10. A concrete precast pile, including precast pile body and pre-buried in the lifting hook of precast pile body, its characterized in that, the lifting hook be in any one of above-mentioned claim 1 to 9 the lifting hook.