CN216400036U - Concrete pouring tool convenient for embedding sleeves - Google Patents

Abstract

The utility model relates to a concrete pouring tool convenient for embedding a sleeve, which comprises a gland, a die and a double-end screw rod, wherein the double-end screw rod can be inserted into an embedded sleeve; two ends of the double-end screw are respectively connected with the first screw hole and the second screw hole through threads; the middle of the double-end screw is provided with a bulge, the bulge can be attached to the inner wall surface of the embedded sleeve, the double-end screw and the embedded sleeve are coaxially arranged, and the maximum anti-pulling force provided by the first screw is smaller than the maximum anti-pulling force provided by the second screw. The utility model can conveniently realize the positioning of the embedded sleeve during the pouring of the concrete prefabricated part and the dismantling of the positioning structure after the pouring, simplifies the working procedures and improves the working efficiency.

Description

Concrete pouring tool convenient for embedding sleeves

Technical Field

The utility model belongs to the technical field of concrete prefabricated part pouring, and particularly relates to a concrete pouring tool convenient for sleeve pre-embedding.

Background

When the members are connected or the concrete is connected with the steel material, the members need to be embedded in the concrete so as to be combined with the members during connection. One of the prefabricated parts is a sleeve. The traditional construction method is mainly characterized in that an operator punches a sleeve, the sleeve is fixed on a mould by screws, a nut on the mould is unscrewed after concrete pouring is finished, and long screws on the sleeve are cut to be uniform; or the embedded sleeve is welded on the steel reinforcement framework to be fixed.

The two construction methods have the main defect of large human influence factors. The screw fixing mode has low efficiency in the construction process, nuts are disassembled one by one manually before the die is disassembled, then the die is disassembled, and finally exposed screws are required to be cut to be neat; the mode of welding on the steel reinforcement framework depends on the proficiency of operators in the construction process, and when welding is not firm, the embedded part is easy to displace in the concrete pouring and vibrating process or generate a gap on the surface which is not closely attached to the mould; in addition, the two construction methods have the advantages of high labor intensity, low working efficiency, time and labor consumption, and the harm to the health of constructors due to large welding smoke in welding construction.

SUMMERY OF THE UTILITY MODEL

The present invention aims to overcome the defects of the prior art, and provides a concrete pouring tool convenient for pre-embedding a sleeve, which can solve at least one of the technical problems.

In order to achieve the above object, one or more embodiments of the present invention provide a concrete pouring tool facilitating sleeve pre-embedding, including a gland, a mold, and a double-threaded screw capable of being inserted into a pre-embedded sleeve, wherein the gland has a first screw hole, and the mold has a second screw hole; two ends of the double-end screw are respectively connected with the first screw hole and the second screw hole through threads; the middle of the double-end screw is provided with a bulge, the bulge can be attached to the inner wall surface of the embedded sleeve, the double-end screw and the embedded sleeve are coaxially arranged, and the maximum anti-pulling force provided by the first screw is smaller than the maximum anti-pulling force provided by the second screw.

Furthermore, the gland is made of plastic, and the die is made of steel.

Further, the double-end screw consists of a first screw and a second screw, and the outer diameter of the first screw is smaller than that of the second screw.

The beneficial effects of one or more of the above technical solutions are as follows:

according to the utility model, the combination of the gland, the die and the double-headed screw is adopted, the gland and the double-headed screw penetrating through the embedded sleeve are utilized to fix the embedded sleeve and the die, so that the positioning during pouring is realized, and compared with the mode of welding the embedded sleeve at the position of a reinforcement cage, the position deviation of the embedded sleeve during concrete vibration due to infirm welding can be avoided, the process of welding the embedded sleeve and the embedded sleeve is avoided, and the working efficiency is improved.

And the biggest resistance to plucking that first screw can provide is less than the biggest resistance to plucking that the second screw provided, when demolising the mould, and first screw directly takes place to destroy and break away from with stud, for drilling on pre-buried sleeve then utilize bolt and nut to fix its mode on the mould, has reduced the process of dismantling the nut and will pre-buried sleeve department evagination bolt cutting, has improved work efficiency.

Adopt the gland to be the plastics material, the mould is steel matter, and under equal size specification, the intensity of plastics is less than the steel for the withdrawal resistance that the screw thread in first screw hole department provided is less relatively, is convenient for demolish of mould and screw member.

Adopt double threaded screw to constitute by the first screw and the second screw of external diameter difference, first screw external diameter is less than the second screw external diameter, and the first screw external diameter that matches promptly and use is less relatively, and the biggest resistance to plucking that can provide is less relatively, is convenient for demolising of mould and screw member.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a schematic structural view of an integrated device used in cooperation with a pre-buried sleeve in an embodiment of the present invention;

FIG. 2 is a schematic structural view of a screw member according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a gland in an embodiment of the present invention.

In the figure: 1. concrete; 2. a gland; 3. pre-burying a sleeve; 4. a mold; 5. a double-ended screw; 21. an end cap; 22. a barrel; 23. a first screw hole; 51. a first screw; 52. a protrusion; 53. a second screw.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

For convenience of description, the words "up, down, left and right" when appearing in the present invention merely indicate correspondence with the up, down, left and right directions of the drawings themselves, and are not limiting of structure, but merely for convenience of description and simplified description, and do not indicate or imply that the referenced apparatus or component must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting of the present invention.

In an exemplary embodiment of the present invention, as shown in fig. 1 to 3, a concrete pouring tool for embedding sleeves is provided, during a concrete 1 pouring process, a pouring space needs to be formed by using a mold 4, and in order to realize positioning of the embedded sleeves 3 in the pouring space, the present embodiment further includes a gland 2 and a double-headed screw 5 capable of being inserted into the embedded sleeves 3, the gland 2 has a first screw hole 23, and the mold 4 has a second screw hole; two ends of the double-head screw 5 are respectively connected with the first screw hole 23 and the second screw hole through threads; the middle part of the double-end screw 5 is provided with a protruding part 52, the protruding part 52 can be attached to the inner wall surface of the embedded sleeve 3, the double-end screw 5 and the embedded sleeve 3 are coaxially arranged, and the maximum anti-pulling force provided by the first screw hole 23 is smaller than the maximum anti-pulling force provided by the second screw hole. The overall length of the double-ended screw can vary according to the thickness of the embedment.

The concept of maximum pullout force is mentioned above and is defined as the maximum pull force when two components are axially pulled along a threaded hole after they are threadedly engaged such that the threads are broken and the two components are disengaged from each other.

The double-end screw 5 is a rod-shaped structure with threads at both ends, and is not necessarily a rod with the same diameter at both ends; the diameter-variable rod can also be a diameter-variable rod, namely, the outer diameter of one end is large, and the outer diameter of the other end is small.

In order to realize that the maximum anti-pulling force that first screw provided is less than the maximum anti-pulling force that the second screw provided, gland 2 adopts the plastics material, and mould 4 is the steel material. The gland of plastics material has certain intensity, screws up the back at stud and closing machine mould, and pre-buried sleeve fastens in order to realize the location with the mould. When dismantling the mould, first screw department internal thread hinders stud and breaks away from, but the screw thread of plastics material is very easily destroyed for stud breaks away from among the pre-buried sleeve of closing machine.

In other embodiments, the gland can be made of wood and other easily-damaged materials; iron or other metals, and alloys may also be used to make the mold.

The screw holes have different sizes, and even if the first screw hole and the second screw hole are made of different materials, the maximum pulling resistance force is possibly different. Therefore, in the present embodiment, the double-headed screw 5 is composed of the first screw 51 and the second screw 53, and the outer diameter of the first screw 51 is smaller than that of the second screw 53. The first screw rod is matched with the first screw hole for use, and the second screw rod is matched with the second screw hole for use; inevitably, the outer diameter of the first screw hole is smaller than that of the second screw hole. Under the same material, the maximum withdrawal resistance that first screw provided is less.

Preferably, the second screw is an M12 coarse screw, and the first screw is an M8 fine screw.

Utilize double-end screw to realize the location of pre-buried sleeve and mould in this embodiment, double-end screw screws up the back with gland and mould respectively, can guarantee the location of pre-buried sleeve in self central axis direction for realize radial positioning, make pre-buried sleeve and double-end screw arrange with the same axis, in this embodiment, the junction of first screw 51 and second screw 53 has bellying 52.

The protrusion 52 may be an annular boss structure, and the annular boss, the first screw rod and the second screw rod are coaxially arranged. The outer diameter of the annular boss is larger than the outer diameters of the first screw 51 and the second screw 53. After the double-end screw is inserted into the embedded sleeve, the outer annular surface of the annular boss is attached to the inner annular surface of the embedded sleeve, and the coaxiality of the outer annular surface and the inner annular surface is further realized.

The annular boss can be replaced by a semicircular disc or an arc disc and the like, and the arc disc and the semicircular disc are coaxially arranged with the first screw rod and the second screw rod.

In this embodiment, gland and mould set up respectively in embedded sleeve's both sides, screw up stud after, can exert pressure in one side that embedded sleeve deviates from the mould.

The gland 2 comprises an end cover 21 and a cylinder body 22 which are connected, the central axis of the cylinder body 22 is perpendicular to the end cover 21, the outer diameter of the end cover 21 is larger than the inner diameter of the embedded sleeve 3, the cylinder body 22 can be inserted into the embedded sleeve 3, and the inner wall surface of the cylinder body 22 is provided with threads to form a first screw hole 23.

The end cover can adopt a disc-shaped structure and is coaxially arranged with the cylinder body; the end cap may also be square, rectangular, etc., without limitation.

Under the condition of adopting end cover and barrel structure, in order to guarantee that the end cover can not laminate the side that deviates from the mould at buried sleeve in advance, the barrel 22 is less than buried sleeve 3's length along the length sum of self axis direction and the protruding length along 5 axis directions of double threaded screw.

In other embodiments, the cylinder structure may be omitted, and only the end cap having a sufficient thickness and the first screw hole may be left.

In this embodiment, the first screw hole and the head of the first screw rod are both located inside a casting space defined by the mold, so as to avoid the first screw rod and the first screw hole from being immersed in concrete slurry, and further affecting the demolding of the double-headed screw rod, in this embodiment, the first screw hole 23 is a blind hole. To facilitate the machining and to provide a second screw hole of sufficient axial length, the second screw hole in this embodiment is a through hole.

The beneficial effect of this embodiment lies in, pre-buried sleeve installation effectiveness is high. The device only needs to screw a plastic gland after one end of a double-headed screw is installed on a die; the welding fixing is adopted, the welding machine needs to be moved, the electric connection is needed, the operation is complex, only a welder can operate, and the requirement on operators is high. The device only needs to install the pre-buried sleeve on the die and then screw the plastic gland, the operation is simple and convenient, and any worker can operate the device.

The installation effect of the embedded sleeve is good, the embedded sleeve is fixed by traditional welding, the embedded sleeve can generate displacement or floating along with concrete pouring and vibration, so that the embedded sleeve can not accord with a design position after demoulding, and even can generate large-amplitude offset when welding is not firm, so that the embedded sleeve loses effect; the embedded sleeve fixing device can be used for fixing the embedded sleeve on the die, displacement cannot be generated for concrete pouring and vibration, and zero error can be achieved compared with design after die stripping.

Economic effect is good, uses pre-buried sleeve fixing device can greatly reduce artifical use quantity, especially the more construction project of pre-buried sleeve, compares in the reducible half operation workman of traditional screw fixation, compares welded fastening can reduce welder's quantity in a large number, reduces pre-buried sleeve installation cost.

The construction worker is protected to be healthy and safe, and traditional welded fastening can produce a large amount of welding smoke, and the welding smoke can cause harm to human health. In addition, a welding machine needs to be moved and wiring power connection is needed in the welding process, so that potential safety hazards such as electric shock and high-altitude falling can be caused.

The working principle is as follows: during operation, open the screw hole that matches with second screw rod in the double-end screw on the mould earlier, the trompil can be once used forever, then screw up the second screw rod on the mould and overlap pre-buried sleeve on the double-end screw, screw up plastics gland and first screw rod at last. During the drawing of patterns, the resistance to plucking that utilizes second screw rod and mould is greater than the resistance to plucking of first screw rod and gland, directly demolish the mould can, double-end screw rod can be along with the mould together drops, and the pre-buried sleeve then can be stayed in the concrete, and then realizes the quick drawing of patterns.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.

Claims (8)

1. A concrete pouring tool convenient for embedding a sleeve is characterized by comprising a gland, a die and a double-end screw rod capable of being inserted into the embedded sleeve, wherein the gland is provided with a first screw hole, and the die is provided with a second screw hole; two ends of the double-end screw are respectively connected with the first screw hole and the second screw hole through threads; the middle part of the double-end screw is provided with a protruding part, the protruding part can enable the double-end screw and the embedded sleeve to be coaxially arranged, and the maximum anti-pulling force provided by the first screw hole is smaller than the maximum anti-pulling force provided by the second screw hole.

2. The concrete pouring tool convenient for embedding of sleeves according to claim 1, wherein the gland is made of plastic, and the mold is made of steel.

3. The concrete pouring tool convenient for embedding of sleeves as claimed in claim 1 or 2, wherein the double-threaded screws are composed of first screws and second screws, and the outer diameters of the first screws are smaller than those of the second screws.

4. The concrete pouring tool convenient for embedding of sleeves as claimed in claim 3, wherein the protruding portion is arranged at the joint of the first screw and the second screw.

5. The concrete pouring tool convenient for embedding of sleeves as claimed in claim 4, wherein the protrusions are annular bosses.

6. The concrete pouring tool convenient for sleeve pre-embedding according to claim 1, characterized in that the gland comprises an end cover and a cylinder body which are connected, the central axis of the cylinder body is perpendicular to the end cover, the cylinder body can be inserted into the pre-embedded sleeve, and a first screw hole is formed in the cylinder body.

7. The concrete pouring tool convenient for embedding of the sleeves as claimed in claim 6, wherein the sum of the length of the barrel in the axial direction of the barrel and the length of the protruding portion in the axial direction of the double-threaded screw is smaller than the length of the embedded sleeve.

8. The concrete pouring tool convenient for embedding of sleeves according to claim 1, wherein the first screw holes are blind holes.

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