CN215443210U - Temporary plugging device for pin key hole of PC (polycarbonate) stair - Google Patents

Abstract

The utility model provides a temporary plugging device for a pin key hole of a PC (polycarbonate) stair, and belongs to the technical field of building materials. It has solved the problem that the round pin keyhole is blockked up by building rubbish easily this interim plugging device in PC stair round pin keyhole includes cylindrical body, the one end of body runs through, the other end is sealed, and the inside of body is the cavity form, the body can insert the round pin keyhole of seting up on the PC stair, with this make the downthehole space of round pin keyhole occupy by the body, with this avoid building rubbish to remain in the round pin keyhole, furthermore, the body is close to the outside protruding shutoff portion that forms of circumference lateral wall of self top department, when the body inserts the round pin keyhole, the circumference lateral wall of shutoff portion can paste tightly with the circumference inside wall of round pin keyhole department, with this make the clearance volume between the two littleer. This interim plugging device in PC stair round pin keyhole can prevent that the round pin keyhole from being blockked up by building rubbish.

Description

Temporary plugging device for pin key hole of PC (polycarbonate) stair

Technical Field

The utility model belongs to the technical field of building materials, and relates to a temporary plugging device for a pin key hole of a PC stair.

Background

The stairs are vertical traffic members which are used for connecting all floors in the building and are used for traffic connection among all floors and when the height difference is large; is an indispensable part in a building.

The PC stair (namely the prefabricated stair of assembled) is a comparatively extensive one of using, and it specifically is: prefabricated staircase of assembled is produced processing in advance according to the drawing in prefabricated component mill, then transports and carry out the assembled joint to the job site to this guarantees that the stair is more pleasing to the eye, and it is more convenient to be under construction.

In the prior art, a plurality of pin key holes are reserved at the upper end and the lower end of an assembly type prefabricated staircase, when the assembly is carried out, the assembly type prefabricated staircase is generally connected with a stair beam through post-embedded steel bars, or anchor bolts are pre-embedded on the stair beam in advance, connecting pieces are inserted into the pin key holes when the assembly type prefabricated staircase needs to be connected with the stair beam in follow-up, the connecting pieces are specifically connected with the pre-embedded anchor bolts and then encapsulated through glue or cement, but in order to ensure the construction order and prevent the waste of construction materials and construction time, the pin key holes cannot be immediately embedded into the pin key holes or connected with the pre-embedded anchor bolts and closed after one section of the assembly type prefabricated staircase is installed, and the pin key holes are uniformly closed after all the stair sections are completely installed; therefore, various building wastes can gradually block the pin key hole in the construction process, great trouble is brought to later cleaning, and meanwhile, the firmness of connection between the assembled prefabricated staircase and the stairway can be influenced.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides a temporary plugging device for a pin key hole of a PC stair, which aims to solve the technical problems that: how to effectively prevent the building rubbish from blocking the key hole of the pin.

The purpose of the utility model can be realized by the following technical scheme: the utility model provides a interim plugging device of PC stair round pin keyhole, is including being cylindrical body, its characterized in that, the body is inside to be the cavity form, the body top is sealed and the bottom runs through the setting, the body is close to the outside protruding formation of circumference lateral wall on self top and can paste tight sealed shutoff portion with the round pin keyhole mouth of a hole department circumference inside wall that is used for the location.

The temporary plugging device for the pin key hole of the PC stair comprises a columnar body, wherein one end of the body penetrates through the body, the other end of the body is sealed, the interior of the body is hollow, and the body can be inserted into the pin key hole formed in the PC stair, so that the space in the pin key hole is occupied by the body, building garbage is prevented from being retained in the pin key hole, and the garbage in the pin key hole is prevented from being cleaned when ribs are planted in the pin key hole or a connecting piece connected with an embedded anchor bolt is inserted subsequently; in addition, the body is close to the outside protruding shutoff portion that forms of circumference lateral wall that self top department, when the body inserts the round pin key hole, the circumference lateral wall of shutoff portion can paste tightly with the circumference inside wall of round pin key hole department, make the clearance volume between the two littleer with this, further guarantee that construction waste can not fall into in the round pin key hole, furthermore, when installing PC stair through the mode of embedded anchor, because body bottom opening and inside cavity, so when the body inserts the round pin key hole, the body can entangle the embedded anchor through the opening of self bottom, fix a position pre-buried position from this.

In the temporary plugging device for the pin key hole of the PC stair, the circumferential outer side wall of the body close to the bottom end protrudes outwards to form a positioning part which is used for being attached to the circumferential inner side wall of the pin key hole.

The body is close to the outside protruding location portion that forms of circumference lateral wall of bottom, when PC stair and stair beam adopt the mode of buried anchor cooperation connecting piece to be connected, the opening of body bottom can be established outside the buried anchor, and the circumference inside wall laminating that the location portion that forms is close to the bottom with the round pin keyhole through protruding on the body bottom circumference lateral wall, with this can detect the buried anchor position that lies in the round pin keyhole, and can cup joint outside the buried anchor through the body bottom, fix a position with this to the position of buried anchor, prevent that buried anchor from taking place the displacement and too being close to the round pin keyhole wall, the not enough influence PC stair and stair beam's of concrete compactness when causing follow-up filling to seal up quality of being connected.

In the temporary plugging device for the pin key hole of the PC stair, a center indication mark is carved at the center of the top end of the body.

The top (the confined one end of body promptly) center department of body is carved with central index mark, and this central index mark is located the center department on body top, and when follow-up mode that adopts the bar planting was connected PC stair and stair beam, the user can be through the drilling rod according to central index mark drill through the body top and squeeze into the concrete basal layer of stair beam in to this guarantees follow-up when carrying out the bar planting in the round pin keyhole, and the position of bar planting is located the center department in round pin keyhole, with this improvement PC stair and the quality of being connected of stair beam.

In the temporary plugging device for the pin key hole of the PC stair, a plurality of pull rings are welded and fixed on the plate surface at the top end of the body.

Welded fastening has a plurality of pull ring on the face on body top, when carrying out the bar planting or when installing and inserting and embedded anchor's connecting piece, the user can outwards pull out the body through the pull ring of welded fastening on body top to this makes the round pin keyhole no longer by the body shutoff, and outwards pulls out through the pull ring and also can guarantee to dismantle the body more laborsavingly.

In the temporary plugging device for the pin key hole of the PC stair, the pull rings are arranged on two sides of the central indication mark in parallel.

A plurality of pull rings set up side by side for when demolising the body, the same atress of a plurality of each pull rings of accessible is outwards pulled out, avoids one of them pull ring atress too big to be broken by the snap, and each pull ring sets up in center indicator's both sides side by side, effectively avoids taking place to interfere with the drilling rod.

In the temporary plugging device for the pin key hole of the PC stair, the body and the pull rings are both made of stainless steel.

The body and a plurality of pull rings all adopt stainless steel material to constitute, have intensity height, antirust effect good and price advantage of squinting.

Compared with the prior art, this interim plugging device of PC stair round pin keyhole has following advantage:

the temporary plugging device for the pin key hole of the PC stair comprises a columnar body, wherein the body can be inserted into the pin key hole, so that the space in the pin key hole is occupied by the body, the plugging portion is formed by outwards protruding the circumferential outer side wall close to the top end of the plugging portion and clings to the circumferential inner side wall of the pin key hole, so that the gap between the plugging portion and the circumferential inner side wall is smaller, and the building rubbish is guaranteed not to fall into the pin key hole.

The body is close to the outside protruding location portion that forms of circumference lateral wall of bottom, and the opening of body bottom can be established outside the embedded anchor to this can detect the embedded anchor position that lies in the round pin key hole, and can fix a position the position of embedded anchor.

And thirdly, a user can drill through the top end of the body according to the central indication mark through the drill rod and drive the drill rod into the concrete base layer of the stair beam, so that the position of the embedded steel bar is ensured to be positioned at the center of the pin key hole, and the connection quality of the PC stair and the stair beam is improved.

Fourthly, a plurality of pull rings are welded and fixed on the board surface at the top end of the body, a user can pull out the body outwards through the pull rings welded and fixed on the top end of the body, and the pull rings are pulled out outwards to ensure that the body is more labor-saving to disassemble.

And fifthly, the pull rings are arranged in parallel, so that the phenomenon that one pull ring is broken due to overlarge stress is avoided, and the pull rings are arranged on two sides of the central indication mark in parallel, so that the interference with the drill rod is effectively avoided.

Drawings

Fig. 1 is a first structural schematic diagram of a body.

Fig. 2 is a schematic structural diagram ii of the body.

Fig. 3 is a cross-sectional view of the body.

In the figure, 1, a body; 1a, a sealing part; 1b, a positioning part; 1c, a center indicator mark; 1d, a pull ring.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1-3, this interim plugging device of PC stair round pin keyhole is including being cylindric and adopting body 1 that stainless steel material constitutes, the inside of body 1 is the cavity form and the bottom runs through the setting, the outside protruding annular shutoff portion 1a that forms on the circumference lateral wall that is close to the top of body 1, when body 1 inserts the round pin keyhole, shutoff portion 1a that body 1 is located the top can paste tightly sealedly with the circumference inside wall of round pin keyhole aperture department to this prevents that construction waste from getting into the round pin keyhole through the clearance between the two, effectively carries out interim shutoff to the round pin keyhole.

As shown in fig. 1-3, the circumferential outer side wall of the body 1 near the bottom end is outwardly protruded to form a circular ring-shaped positioning portion 1b, when the body 1 is inserted into the pin key hole, the positioning portion 1b located at the bottom end of the body 1 can be attached to the circumferential inner side wall of the pin key hole, and when the embedded anchor is installed in a follow-up embedded anchor mode, after the body 1 is completely inserted into the pin key hole, the embedded anchor located in the pin key hole can be sleeved in the opening at the bottom end of the body 1, and the embedded anchor passes through the positioning portion 1b at the bottom end of the body 1, so that the installation position of the embedded anchor can be accurately checked, the embedded anchor meeting the requirements in position is effectively positioned, and the follow-up embedded anchor is prevented from shifting.

As shown in fig. 1-3, the center of the top end of the body 1 (i.e. the closed end of the body 1) is carved with a center indication mark 1c, the center indication mark 1c is specifically cross-shaped and corresponds to the center of the pin key hole, when the PC stair is connected and connected to the stair beam in a subsequent mode of bar planting, the user can drill through the top end of the body 1 according to the center indication mark 1c through an electric drill, and a drill bit of the electric drill is driven into a concrete base layer of the stair beam, so that the bar planting position is ensured to be located at the center of the bottom wall in the pin key hole, and the connection quality of the PC stair and the stair beam after bar planting is ensured.

As shown in fig. 1-2, the top end of the body 1 is welded and fixed with two pull rings 1d, and subsequently, when the steel bar is planted or the connecting piece is installed, a user can pull out the body 1 in advance through the pull rings 1d, in addition, the two pull rings 1d are arranged side by side and are respectively located on two sides of the center indication mark 1c, so that the interference of a drill bit of an electric drill on the pull rings 1d during drilling is effectively avoided.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although the terms of the body 1, the blocking portion 1a, the positioning portion 1b, the center indication mark 1c, the pull ring 1d, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims (6)

1. The utility model provides a interim plugging device of PC stair round pin keyhole, is including being cylindrical body (1), its characterized in that, body (1) inside is the cavity form, body (1) top is sealed and the bottom runs through the setting, body (1) are close to the outside protruding formation of circumference lateral wall on self top can paste tight sealed shutoff portion (1a) with the round pin keyhole aperture department circumference inside wall that is used for the location.

2. The temporary plugging device for the pin key hole of the PC stair according to claim 1, wherein the circumferential outer side wall of the body (1) close to the bottom end is outwards bulged to form a positioning part (1b) which can be attached to the circumferential inner side wall of the pin key hole.

3. The temporary plugging device of PC stair pin keyhole according to claim 1 or 2, wherein center indication mark (1c) is carved at the center of the top end of the body (1).

4. The temporary plugging device for the key hole of the PC stair pin according to claim 3, wherein a plurality of pull rings (1d) are welded and fixed on the plate surface of the top end of the body (1).

5. Temporary plugging device of PC stair pin keyhole according to claim 4, wherein several said pull rings (1d) are juxtaposed on both sides of said central indicator mark (1 c).

6. Temporary plugging device of PC stair pin keyhole according to claim 4 or 5, wherein said body (1) and several of said pull rings (1d) are made of stainless steel.

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