CN210393395U - Prefabricated component hangs nail hoist and hoist subassembly - Google Patents

Abstract

The utility model provides a prefabricated component hangs nail hoist and hoist subassembly has set up the auto-lock groove on the hoist, can avoid hanging the nail and deviate from the arc wall of hoist head, the effectual operating safety who guarantees the staff. The lifting appliance is very suitable for prefabricated parts with telescopic hanging nails and also suitable for non-telescopic fixed hanging nails, and the edge stretching defect of the prefabricated wall board can be reduced or avoided. The utility model discloses a hoist subassembly provides axial flexible space to hanging the nail through the sleeve of taking the shoulder hole, when hanging the nail and stretching out completely, gets rid of the mandrel hang the head of nail and stretch out beyond corresponding wallboard lateral wall to be convenient for hang the pin fin and be connected with the hoist. And the hanging nail can be lifted out along with the core mould, the core mould can also be detached after being lifted out along with the hanging nail, the connection of the lifting appliance and the detachment of the core mould are both very convenient and fast, and the influence on the quality and the structural strength of the prefabricated wallboard is small.

Description

Prefabricated component hangs nail hoist and hoist subassembly

Technical Field

The utility model belongs to the technical field of the building prefabricated component lifting device and specifically relates to a prefabricated component hangs nail hoist and hoist subassembly.

Background

In prefabricated wallboard production process, need lift by crane the operation to the prefabricated wallboard of keeping flat after having pour, make prefabricated wallboard use its place to rotate 90 degrees as the center and realize vertical depositing, for the ease of connecting the hoist, current prefabricated wallboard can be at the pre-buried nail of hanging of position installation near the lateral wall, and at pre-buried nail head of hanging and partial neck parcel installation hemisphere mandrel, the straight face of hemisphere mandrel flushes with prefabricated wallboard lateral wall, demolish the hemisphere mandrel during the lift by crane, expose pre-buried nail head of hanging and partial neck, can connect the hoist. Pre-buried nail of hanging in current prefabricated wallboard generally is the button head nail of hanging, it is cylindric structure to hang the pin head promptly, and it is big to hang pin head diameter ratio nail neck diameter, the current hoist that is used for connecting the button head and hangs the nail generally is duckbilled and detains the hoist, the bottom that the hoist was detained to the duckbilled is connected with rotatable hoist head, hoist head bottom is equipped with and is located hoist head rotation center outlying arc wall, this arc wall is radial open form structure, hang in the head end that the pin head can be through the arc wall slides in the arc wall, and finally the tail end of sliding to the arc wall and can carry out the work of lifting by crane. Because the pre-buried nail of hanging of current prefabricated component is fixed, can form hemispherical pit around hanging the nail after the hemisphere mandrel is got rid of, the space of this pit is limited and can't hold whole hoist head, the duckbilled is detained the hoist and is connected the back with hanging the nail, and the hoist head can be blocked by the inner wall of hemisphere pit, because there is the interact power between hoist head and the hemisphere pit, lifts by crane the problem that the in-process very easily takes place prefabricated wallboard and collapses the limit, influences production efficiency and product quality.

At the present stage, this company has developed a nail that hangs that can stretch out and draw back, after getting rid of the hemisphere mandrel, hangs the nail head and can stretch out beyond the prefabricated wallboard lateral wall, like this, and the duckbilled is detained the hoist and is connected the back with hanging the nail, and the hoist head no longer receives the restriction of the inner wall of hemisphere pit to the problem that prefabricated wallboard bursts at the limit has been avoided. However, after the hanging nail is set to be a telescopic structure, in the lifting process, the hanger head and the duckbilled buckle hanger main body are easy to relatively rotate, the hanging nail has the risk of being separated from the arc-shaped groove of the hanger head, potential safety hazards exist, and a worker has great risk in the operation process, so that the problem is solved by a scheme in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prefabricated component hangs nail hoist and hoist subassembly to solve the problem that proposes in the background art.

A prefabricated part lifting nail lifting appliance comprises a lifting appliance main body and a lifting appliance head, wherein a bolt shaft vertically penetrating through the lifting appliance head is arranged at the bottom of the lifting appliance main body, the lifting appliance head can rotate by taking the bolt shaft as a center, an arc-shaped groove is arranged at the bottom of the lifting appliance head and is positioned on the radial periphery of the rotation center of the lifting appliance head, the head end of the arc-shaped groove in the length direction penetrates out of the lifting appliance head, the tail end of the arc-shaped groove in the length direction extends to a position close to the rotation center of the lifting appliance head, one end, close to the rotation center of the lifting appliance head, of the cross section of the arc-shaped groove is a wide end, one end, far away from the rotation center of the lifting appliance head, of the cross section of the arc-shaped groove is a narrow end, the width of the wide end of the arc-shaped groove is larger than the diameter of the lifting nail head, the narrow end of the arc-shaped groove, the hanging nail can not be separated from the hanger head along the radial direction, the head of the hanging nail can slide into the arc-shaped groove through the head end of the arc-shaped groove and finally slide to the tail end of the arc-shaped groove to carry out lifting work, the tail end of the arc-shaped groove is provided with a sunken self-locking groove at the junction position of the wide end and the narrow end, the groove surface of the self-locking groove is matched with the lower profile of the head of the hanging nail, and the sunken direction of the self-locking groove is the direction which is radially far away from the rotation center of the hanger head along the hanger head, so that the head of the hanging nail can not be separated from the head end of the arc-shaped groove because the head of the positioning of the self-locking groove.

The lifting appliance main body comprises an upper ring and a lower ring which are vertically distributed, the upper ring is used for connecting a lifting device, the bolt shaft is the lower half ring edge of the lower ring, the lower half ring edge of the lower ring vertically penetrates through a bolt hole in the lifting appliance head, and the lifting appliance head can rotate around the ring edge.

Further, the overhead lug that is provided with of hoist, the lug is located the overhead radial opposite side opposite with the arc wall place position of hoist, and the lug is terminal to be stretched out along the direction of keeping away from hoist head center of rotation, and the lug can regard as the operating handle of manual rotation hoist head on the one hand, and on the other hand can regard as the focus adjusting part of hoist head for when the hoist head is in the natural state of not connecing to hang the nail, the head end of arc wall is located its tail end orientation all the time.

A lifting appliance assembly comprises the prefabricated component lifting appliance and a telescopic lifting appliance pre-buried assembly, wherein the telescopic lifting appliance pre-buried assembly comprises a core mould made of high polymer materials and used for being pre-buried in a wallboard when the wallboard is poured, a sleeve made of steel and a lifting appliance, the lifting appliance comprises a tail part close to one side of the center of the wall body, a central neck part and a head part close to one side of the side wall of the wallboard, the radial sizes of the tail part and the head part of the lifting appliance are larger than the radial size of the neck part, a first shaft shoulder is arranged at the junction position of the tail part and the neck part of the lifting appliance, a second shaft shoulder is arranged at the junction position of the head part and the neck part of the lifting appliance, the head part of the lifting appliance is wrapped by the core mould, the lifting appliance head part of the core mould is removed for connecting the lifting appliance head part, the sleeve is arranged at the neck part and the tail part periphery of the lifting appliance, and, the hole butt is located the one side that is close to the wallboard center and is located the staple afterbody periphery, the aperture of sleeve hole butt with the afterbody of staple matches, the aperture of hole tip is greater than the neck radial dimension of staple, and sleeve hole butt axial length is greater than staple afterbody axial dimension for the staple can make axial displacement relative to the sleeve, and the aperture of sleeve hole tip is less than the aperture of sleeve hole tip, and sleeve hole tip and hole tip boundary position department are provided with the hole shoulder of the round platform shape of matcing with the first shoulder of staple, the hole shoulder is used for offsetting and preventing axially movable's staple from deviating from the sleeve along the direction of keeping away from the wallboard center with the first shoulder of staple, and then prevents that the staple from deviating from the wall body when lifting by crane, and the staple satisfies the following condition with telescopic axial length:

when the hanging nail is completely retracted (namely the tail of the hanging nail is positioned at the tail end of the thick end of the inner hole of the sleeve close to one side of the center of the wall body), the head of the hanging nail does not exceed the corresponding side wall of the wallboard; when the hanging nail is completely extended (namely, the hanging nail moves to the position that the first shaft shoulder is abutted against the inner hole shoulder of the sleeve), the head of the hanging nail of the core mold is removed and extends out of the corresponding side wall of the wallboard, so that the head of the hanging nail is conveniently connected with the head of the lifting appliance.

Preferably, the sum of the axial total length of the sleeve and the thickness of the core mold is greater than the axial total length of the hanging nail, so that when the hanging nail is completely retracted, the head of the hanging nail does not exceed the corresponding wallboard side wall, and the sum of the axial length of the thin end of the inner hole of the sleeve and the thickness of the core mold is less than the axial total length of the hanging nail, so that when the hanging nail is completely extended, the head of the hanging nail can extend out of the wallboard side wall.

Further, telescopic outer cylinder also sets up to the thick ladder face of the thin one end of one end, and is preferred, the thin end of sleeve outer cylinder is located the same end of axial with the thin end of hole, and the outer cylinder butt of sleeve is located the same end of axial with the hole butt, and the thin end of outer cylinder is provided with outer fender shoulder with the juncture of outer cylinder butt, keep off the shoulder outward and be used for preventing that the sleeve from deviating from the wall body when lifting by crane.

Further, telescopic hanging nail embedded component still includes the reinforcement rib, the reinforcement rib is fixed in telescopic outer fender shoulder position department, and the length direction of reinforcement rib sets up along telescopic radial direction, and the reinforcement rib is used for strengthening the cohesion between sleeve and the wall body, increases whole embedded component's fastness.

Preferably, the reinforcing ribs are two parallel or more than two crossed reinforcing ribs.

Preferably, the reinforcing ribs are connected to the sleeve by means of a strapping.

Preferably, the core mold is a semispherical rubber core mold.

Furthermore, the telescopic hanging nail embedded assembly also comprises a sealing film, wherein the sealing film is arranged at the extreme end position of one side of the thick end of the inner hole of the sleeve, which is close to the center of the wall body, and the sealing film is used for preventing mortar from entering the sleeve when the wall body is poured, so that the thick end of the inner hole of the sleeve provides a space required by axial movement for the tail part of the hanging nail after the wall body is poured; on the other hand, the hanging nail can be prevented from being pulled out from the sleeve along the direction close to the center of the wallboard.

Preferably, the first shaft shoulder and the second shaft shoulder of the lifting nail are both arranged to be of an inclined structure, the inner hole shoulder of the sleeve is arranged to be of an inclined structure matched with the first shaft shoulder, the first shaft shoulder and the second shaft shoulder of the inclined structure can prevent stress concentration on one hand and increase the strength of the lifting nail, on the other hand, the second shaft shoulder can facilitate detachment of the core mold, and the first shaft shoulder can perform radial positioning and limiting effects on the lifting nail through the inner hole shoulder of the sleeve when the lifting nail is located at a completely extending position.

Preferably, hang the nail and hang the nail for the button head, hang the cross section of afterbody, head and the neck of nail and be circular, and afterbody maximum diameter, head maximum diameter and neck diameter are the relation that reduces in proper order.

Preferably, the aperture of the thin end of the inner hole of the sleeve is larger than the diameter of the head of the hanging nail, so that the head of the hanging nail can sequentially extend out of the sleeve through the thick end of the inner hole of the sleeve and the thin end of the inner hole, and the sleeve connection of the sleeve and the hanging nail is realized.

Or preferably, the aperture of the thin end of the inner hole of the sleeve is larger than the diameter of the neck of the hanging nail and smaller than the diameter of the head of the hanging nail, the sleeve is arranged into a split structure with half pairs, and the split surface of the half pair coincides with the axial lead of the sleeve, so that the sleeve can wrap the hanging nail with the thin middle end and the thick two ends, and the sleeve and the hanging nail can be sleeved.

Furthermore, the telescopic hanging nail embedded assembly further comprises a binding adhesive tape, wherein the binding adhesive tape is spirally wound on the outer cylindrical surface of the halved sleeve and is used for combining the two halved sleeves together and sealing a combination gap between the two halved sleeves.

The utility model discloses following beneficial effect has at least:

the utility model provides a prefabricated component hangs nail hoist and hoist subassembly hangs the nail to the telescopic, has set up a sunken self-locking groove on the hoist head of hoist is detained to current duckbilled, can avoid hanging the nail and deviate from the arc wall of hoist head, the effectual operating safety who guarantees the staff. Of course, the utility model discloses a hoist also is applicable to the fixed nail that hangs of not telescopic equally, and the back is connected with fixed nail that hangs to the hoist head, and the head card with fixed nail that hangs again has certain rising in the self-locking groove to increase the space between hoist head and the hemisphere pit, reduce or avoid colliding with between hoist head and hemisphere pit inner wall or the edge, thereby reduce or avoid the limit defect of stretching tight of prefabricated wallboard.

In the lifting appliance component of the utility model, the telescopic lifting nail embedded component provides an axial telescopic space for the lifting nail through the sleeve with the stepped hole, and when the lifting nail is completely retracted, the head of the lifting nail does not exceed the corresponding wall plate side wall; when the hanging nail is completely extended, the head of the hanging nail of the core mold is removed to extend out of the corresponding side wall of the wallboard, so that the head of the hanging nail is conveniently connected with the lifting appliance, and the edge stretching defect of the prefabricated wallboard is avoided. The hanging nail can be lifted out along with the core mould, the core mould can also be detached after being lifted out along with the hanging nail, the connection of the lifting appliance and the detachment of the core mould are very convenient and quick, the influence on the quality and the structural strength of the prefabricated wallboard is small, and the hanging nail can extend out of the side wall of the wallboard and be connected with the lifting appliance, the connection of the hanging nail and the lifting appliance is not limited in the space brought by the rubber core film, the rubber core film wrapped by the head part of the hanging nail can be further reduced even on the basis of the size of the existing core mould, which is equivalent to the reduction of the hollow part around the hanging nail, so that the solid part of the wallboard poured around the hanging nail can be increased, the strength of the wallboard at the position of the hanging nail is improved, and the lifting safety.

In order to strengthen the fastness, the utility model discloses a telescopic outer cylinder also sets up to the step shaft structure, and the outer shoulder that keeps off that the thin end of its outer cylinder and outer cylinder butt juncture set up can prevent effectively that the sleeve from deviating from the wall body, and simultaneously, the outer shoulder department that keeps off has still binded the reinforcement rib, and whole pre-buried subassembly fastness is strong.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

fig. 1 is a front view of a spreader in accordance with a preferred embodiment of the present invention;

fig. 2 is a cross-sectional view a-a of fig. 1 in accordance with the present invention;

fig. 3 is a first installation effect (a section view in a top view direction) of the retractable hanging nail embedded assembly in the hanger assembly according to the preferred embodiment of the present invention when the hanging nails are fully retracted;

fig. 4 is a second overall effect view (a cross-sectional view in a top view with the mandrel removed) of the spreader assembly according to the preferred embodiment of the present invention;

fig. 5 is a perspective view of a split sleeve in a spreader assembly according to a preferred embodiment of the present invention.

In the figure: 1-core mould, 2-sleeve, 21-inner hole thin end, 22-inner hole thick end, 23-outer cylinder thin end, 24-outer cylinder thick end, 25-outer retaining shoulder, 26-inner hole shoulder, 27-split body, 28-binding tape, 3-hanging nail, 31-tail part, 32 neck part, 33-head part, 34-first shaft shoulder, 35-second shaft shoulder, 4-wall plate, 41-side wall, 5-reinforcing rib, 6-sealing film, 7-hanger main body, 71-upper ring, 72-lower ring, 8-hanger head, 80-bolt hole, 81-bolt shaft, 82-lug, 9-arc groove, 91-wide end, 92-narrow end, 93-self-locking groove, 94-head end and 95-tail end.

Detailed Description

The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.

Referring to fig. 1-2, a prefabricated member nail hanging hanger comprises a hanger main body 7 and a hanger head 8, wherein a bolt shaft 81 vertically penetrating through a bolt hole 80 on the hanger head is arranged at the bottom of the hanger main body, the hanger head can rotate by taking the bolt shaft as a center, an arc-shaped groove 9 positioned at the radial periphery of the rotation center of the hanger head is arranged at the bottom of the hanger head, the head end 94 of the arc-shaped groove in the length direction penetrates out of the hanger head, the tail end 95 of the arc-shaped groove in the length direction extends to a position close to the rotation center of the hanger head, one end of the arc-shaped groove close to the rotation center of the hanger head along the cross section of the hanger head (i.e. the cross section in the radial direction of the hanger head) is a wide end 91, one end of the arc-shaped groove cross section far away from the rotation center of the hanger head is a narrow end 92, the width of the arc-shaped groove wide end is larger, the width of the open narrow end is larger than the diameter of the neck 32 of the hanging nail and smaller than the diameter of the head of the hanging nail, so that the hanging nail cannot be separated from the head of the lifting appliance along the radial direction, the head of the hanging nail can slide into the arc-shaped groove through the head end of the arc-shaped groove and finally slide to the tail end of the arc-shaped groove to perform lifting work, a concave self-locking groove 93 is arranged at the junction position of the wide end and the narrow end at the tail end of the arc-shaped groove, the groove surface of the self-locking groove is matched with the lower profile of the head of the hanging nail, and the concave direction of the self-locking groove is the direction radially far away from the rotation center of the head of the lifting appliance along the head of the lifting appliance, so that the head of the hanging nail cannot be separated from the head end of the.

The hanger main body 7 comprises an upper ring 71 and a lower ring 72 which are vertically distributed and integrally arranged, the upper ring is used for connecting a lifting device (not shown in the figure), the bolt shaft is a lower half ring edge of the lower ring, the lower half ring edge of the lower ring vertically penetrates through a bolt hole 80 in the hanger head, and the hanger head can rotate by taking the ring edge as a center.

In this embodiment, overhead lug 82 that is provided with of hoist, the lug is located the overhead radial opposite side opposite with the arc wall place position of hoist, and the lug is terminal to be stretched out along the direction of keeping away from hoist head center of rotation, and the lug can regard as the operating handle of manual rotation hoist head on the one hand, and on the other hand can regard as the focus adjusting part of hoist head for when the hoist head is in the natural state of not connecing to hang the nail, the head end of arc wall is located its tail end orientation all the time.

It should be noted that the main improvement point of the lifting device of the present invention is to provide a recessed self-locking groove 93 on the existing duckbill buckle lifting device, and the structure of the duckbill buckle lifting device itself is known to those skilled in the art, therefore, the drawings of the present invention only reflect the structure of the self-locking groove.

Referring to fig. 3 and 4, fig. 3 is a view showing a construction of a hanger assembly in which a core mold is not removed, and fig. 4 is a view showing a construction in which a core mold is removed, and a hanger is connected to a hanger by pulling out a hanger pin.

Referring to fig. 3 to 4, the retractable hanging nail embedded assembly comprises a rubber core mold 1, a steel sleeve 2 and a hanging nail 3, wherein the rubber core mold 1, the steel sleeve 2 and the hanging nail 3 are used for being embedded in a wall board 4 when the wall board is poured, the hanging nail comprises a tail portion 31 close to one side of the center of the wall body, a central neck portion 32 and a head portion 33 close to one side of the side wall of the wall board, the radial sizes of the tail portion and the head portion of the hanging nail are larger than the radial size of the neck portion, a first shaft shoulder 34 is arranged at the junction position of the tail portion and the neck portion of the hanging nail, a second shaft shoulder 35 is arranged at the junction position of the head portion and the neck portion of the hanging nail, the head portion and part of the neck portion close to the head portion of the hanging nail are wrapped by the core mold and are positioned at one side close to the side wall board 41, the sleeve is arranged at the peripheries of the neck portion and the tail portion of the, the hole butt 22 is located the one side that is close to the wallboard center and is located the staple afterbody periphery, the aperture of sleeve hole butt with the afterbody of staple matches, the aperture of hole tip with the neck of staple matches, sleeve hole butt axial length is greater than staple afterbody axial dimension, and the staple can make axial displacement relative to the sleeve, and the aperture of sleeve hole tip is less than the aperture of sleeve hole tip, and sleeve hole tip and hole tip boundary position department are provided with the hole shoulder 26 of the round platform shape that matches with the first shoulder of staple, the hole shoulder is used for offsetting and preventing axially movable's staple from deviating from the sleeve along the direction of keeping away from the wallboard center with the first shoulder of staple, and then prevents that the staple from deviating from the wall body when lifting by crane, and the staple satisfies the following condition with telescopic axial length:

referring to fig. 3, when the hanging nail is completely retracted (i.e. the tail of the hanging nail is positioned at the extreme end of one side of the thick end of the inner hole of the sleeve close to the center of the wall body), the head of the hanging nail does not exceed the corresponding wall plate side wall; referring to fig. 4, when the hanging nail is completely extended (i.e. the hanging nail moves to the position where the first shaft shoulder abuts against the inner hole shoulder of the sleeve), the head of the hanging nail of the core mold is removed to extend out of the corresponding side wall of the wallboard, so that the head of the hanging nail is conveniently connected with the lifting appliance, at the moment, the lifting appliance can be connected with the head of the hanging nail, and the horizontally placed wallboard is changed into vertical placement by rotating the lifting appliance for 90 degrees.

In this embodiment, the sum of the axial total length of the sleeve and the thickness of the core mold is greater than the axial total length of the hanging nail, so that when the hanging nail is completely retracted, the head of the hanging nail does not exceed the corresponding wallboard side wall, and the sum of the axial length of the thin end of the inner hole of the sleeve and the thickness of the core mold is less than the axial total length of the hanging nail, so that when the hanging nail is completely extended, the head of the hanging nail can extend out of the wallboard side wall.

In this embodiment, telescopic outer cylinder also sets up to the thick ladder face of the thin one end of one end, and is preferred, the thin end 23 of telescopic outer cylinder is located the same end of axial with the thin end 21 of hole, and telescopic outer cylinder butt 24 is located the same end of axial with hole butt 22, and the thin end of outer cylinder is provided with outer fender shoulder 25 with the juncture of outer cylinder butt, keep off the shoulder outward and be used for preventing that the sleeve from deviating from the wall body when lifting by crane.

In this embodiment, telescopic hanging nail embedded component still includes reinforcement rib 5, reinforcement rib bindes to fix and keeps off the thin end of shoulder position department and be close to telescopic outer cylinder outside at telescopic, and the length direction of reinforcement rib sets up along telescopic radial direction, and the reinforcement rib is used for strengthening the cohesion between sleeve and the wall body, increases whole embedded component's fastness.

In this embodiment, the reinforcing ribs are two reinforcing ribs arranged in a crossing manner.

In this embodiment, the core mold is a rubber core mold with a hemispherical structure.

In this embodiment, the telescopic hanging nail embedded component further comprises a sealing film 6, the sealing film is arranged at the extreme end position of one side of the thick end of the inner hole of the sleeve, which is close to the center of the wall body, and the sealing film is used for preventing mortar from entering the sleeve when the wall body is poured, so that the thick end of the inner hole of the sleeve provides a space required by axial movement for the tail part of the hanging nail after the wall body is poured; on the other hand, the hanging nails can be prevented from being pulled out of the sleeves along the direction close to the center of the wallboard before the wallboard is poured.

In this embodiment, hang the nail and hang the nail for the button head, hang the cross section of afterbody, head and the neck of nail and be circular, and afterbody maximum diameter, head maximum diameter and neck diameter are the relation that reduces in proper order.

In this embodiment, the first shaft shoulder and the second shaft shoulder of hanging nail all set up the slope structure, telescopic hole shoulder sets up the slope structure that matches with first shaft shoulder, and the first shaft shoulder and the second shaft shoulder of slope structure can prevent stress concentration on the one hand, increase the intensity of hanging nail, and on the other hand, the second shaft shoulder can be convenient for the dismantlement of mandrel, and first shaft shoulder can be when hanging nail is in the position that stretches out completely, plays radial location and limiting displacement to hanging nail through telescopic hole shoulder.

In this embodiment, the diameter of the thin end of the inner hole of the sleeve is larger than the diameter of the neck of the hanging nail and smaller than the diameter of the head of the hanging nail, as shown in fig. 5, in this embodiment, the sleeve is provided with a split structure of half-pairs, and the split surface of the half-pair coincides with the axial lead of the sleeve, so that the sleeve wraps the hanging nail with the thin middle and the thick two ends, and the sleeve and the hanging nail are sleeved.

In this embodiment, the retractable hanging nail embedded component further includes a binding tape 28, the binding tape is spirally wound on the outer cylindrical surface of the halved sleeve, and the binding tape is used for combining the two halved sleeves 27 together and sealing a combination gap between the two halved sleeves.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A prefabricated part lifting nail lifting appliance is characterized by comprising a lifting appliance main body (7) and a lifting appliance head (8), wherein a bolt shaft (81) vertically penetrating through the lifting appliance head is arranged at the bottom of the lifting appliance main body, the lifting appliance head can rotate by taking the bolt shaft as a center, an arc-shaped groove (9) positioned on the radial periphery of the rotation center of the lifting appliance head is arranged at the bottom of the lifting appliance head, the head end (94) of the arc-shaped groove in the length direction penetrates out of the lifting appliance head, the tail end (95) of the arc-shaped groove in the length direction extends to a position close to the rotation center of the lifting appliance head, one end, close to the rotation center of the lifting appliance head, of the arc-shaped groove along the cross section of the lifting appliance head is a wide end (91), one end, far away from the rotation center of the lifting appliance head, of the cross section of the arc-shaped groove is a narrow end (92), the width of the open narrow end is larger than the diameter of a neck (32) of the hanging nail and smaller than the diameter of a head of the hanging nail, so that the hanging nail cannot be separated from the head of the lifting appliance along the radial direction, the head of the hanging nail can slide into the arc-shaped groove through the head end of the arc-shaped groove and finally slide to the tail end of the arc-shaped groove to perform lifting work, a concave self-locking groove (93) is arranged at the junction position of the wide end and the narrow end of the arc-shaped groove at the tail end of the arc-shaped groove, the groove surface of the self-locking groove is matched with the lower profile of the head of the hanging nail, and the concave direction of the self-locking groove is the direction radially far away from the rotation center of the head of the lifting appliance along the head of the lifting appliance, so that the head of the hanging nail.

2. The prefabricated component lifting nail hanger according to claim 1, wherein the hanger body comprises an upper ring (71) and a lower ring (72) which are distributed up and down, the upper ring is used for connecting a lifting device, the bolt shaft is a lower half ring edge of the lower ring, the lower half ring edge of the lower ring vertically penetrates through a bolt hole in a hanger head, and the hanger head can rotate around the ring edge.

3. The prefabricated member nail hanging tool according to claim 2, wherein the tool head is provided with a projection (82) which is located on the other radial side of the tool head opposite to the position of the arc-shaped groove, the tail end of the projection extends in the direction away from the center of rotation of the tool head, and the projection can be used as an operating handle for manually rotating the tool head and a gravity center adjusting part of the tool head, so that the head end of the arc-shaped groove is always located on the tail end of the tool head when the tool head is in a natural state without connection of the nail.

4. A lifting appliance assembly, characterized by comprising the prefabricated component lifting appliance and the telescopic lifting nail pre-embedded assembly according to any one of claims 1 to 3, wherein the telescopic lifting nail pre-embedded assembly comprises a core mould (1) made of high polymer materials and used for being pre-embedded in a wall plate (4) when the wall plate is poured, a sleeve (2) made of steel and a lifting nail (3), the lifting nail comprises a tail part (31) close to one side of the center of the wall body, a central neck part (32) and a head part (33) close to one side of a side wall plate (41), the radial sizes of the tail part and the head part of the lifting nail are larger than the radial size of the neck part, a first shaft shoulder (34) is arranged at the junction position of the tail part and the neck part of the lifting nail, a second shaft shoulder (35) is arranged at the junction position of the head part and the neck part of the lifting nail, the head part of the lifting nail is wrapped by the core, the inner hole of the sleeve comprises a thin end and a thick end, wherein the thin end (21) of the inner hole is positioned at one side close to the side wall (41) of the wall board and positioned at the periphery of the neck of the hanging nail, the thick end (22) of the inner hole is positioned at one side close to the center of the wall board and positioned at the periphery of the tail of the hanging nail, the aperture of the thick end of the inner hole of the sleeve is matched with the tail of the hanging nail, the aperture of the thin end of the inner hole of the sleeve is larger than the radial dimension of the neck of the hanging nail, the axial length of the thick end of the inner hole of the sleeve is larger than the axial dimension of the tail of the hanging nail, so that the hanging nail can axially move relative to the sleeve, the aperture of the thin end of the inner hole of the sleeve is smaller than the aperture of the thick end of the inner hole of the sleeve, a circular truncated cone-shaped inner hole shoulder (26) matched with a first shaft shoulder (34) of the, and then prevent to hang the nail and deviate from the wall body when lifting by crane, hang the nail and telescopic axial length and satisfy following condition with hanging:

when the hanging nail is completely retracted, namely the tail of the hanging nail is positioned at the tail end of one side of the thick end of the inner hole of the sleeve close to the center of the wall body, the head of the hanging nail does not exceed the side wall of the corresponding wall plate; when the hanging nail is completely extended, namely the hanging nail moves to the position that the first shaft shoulder is abutted against the inner hole shoulder of the sleeve, the head of the hanging nail of the core mold is removed and extends out of the corresponding side wall of the wallboard, so that the head of the hanging nail of the core mold is conveniently connected with the hanger.

5. The lifting appliance component according to claim 4, wherein the outer cylindrical surface of the sleeve is also provided with a stepped surface with a thin end and a thick end, the thin end (23) of the outer cylindrical surface of the sleeve and the thin end of the inner hole are positioned at the same axial end, the thick end (24) of the outer cylindrical surface of the sleeve and the thick end of the inner hole are positioned at the same axial end, and an outer blocking shoulder (25) is arranged at the junction of the thin end of the outer cylindrical surface and the thick end of the outer cylindrical surface and is used for preventing the sleeve from being separated from the wall body when the sleeve is lifted.

6. The lifting appliance assembly according to claim 4, wherein the telescopic lifting nail embedded assembly further comprises a reinforcing rib (5), the reinforcing rib is fixed at the position of an outer retaining shoulder of the sleeve, and the length direction of the reinforcing rib is arranged along the radial direction of the sleeve;

the reinforcing ribs are two parallel or more than two crossed, the reinforcing ribs are connected with the sleeve in a bundling mode, and the core mold is a rubber core mold with a hemispherical structure.

7. The lifting appliance assembly according to claim 4, wherein the telescopic hanging nail embedded assembly further comprises a sealing film (6), the sealing film is arranged at the extreme end position of one side of the thick end of the inner hole of the sleeve, which is close to the center of the wall body, and the sealing film is used for preventing mortar from entering the sleeve during wall body pouring on one hand, so that the thick end of the inner hole of the sleeve provides a space for axial movement of the tail part of the hanging nail after the wall body is poured; on the other hand, the hanging nail can be prevented from being pulled out from the sleeve along the direction close to the center of the wallboard.

8. A spreader assembly according to claim 4, wherein the sleeve is provided in a split half-in-half configuration, and the telescopic peg pre-embedded assembly further comprises a binding tape (28) helically wound around the outer cylindrical surface of the split sleeve for joining the two halves of the sleeve together and sealing a joint gap between the two halves (27).

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