CN210530339U - Sleeve for wall-penetrating screw and wall-penetrating assembly with sleeve - Google Patents

Abstract

The utility model discloses a wear wall sleeve pipe for screw rod, including the body, be equipped with in the body along the perforation that the axial link up, the radial dimension of body can be adjusted, and the body is including connecting wall and elasticity thin wall. Therefore, a constructor can operate the sleeve at the outer side of the first template all the time, and the situation that the sleeve slides from the wall-through screw is reduced or avoided; the sleeve can be reused. The utility model also discloses a wall-through component using the sleeve for the wall-through screw rod, which comprises a wall-through screw rod and a guide piece; the guide piece can drive the pipe body after radial contraction to move; the wall screws enable the sleeve to expand radially outwardly. Constructors can install the sleeve after all the first formworks and all the second formworks are installed, and construction efficiency is high; when new sleeve pipe is addd to needs (for example appear neglected loading sleeve pipe or when needing to increase new through-wall screw), the utility model discloses can reduce the number of times that the second template was dismantled and was installed to improve sheathed tube installation effectiveness.

Description

Sleeve for wall-penetrating screw and wall-penetrating assembly with sleeve

Technical Field

The utility model relates to a building templates system field, concretely relates to wall screw rod is with sleeve pipe and applied and have this sheathed tube wall subassembly.

Background

During construction, a building template system is often adopted. The building template system generally comprises templates, a wall penetrating component, a back ridge, fastening nuts and the like, wherein the wall penetrating component comprises a wall penetrating screw rod and a sleeve, for convenience of description, the two templates are taken as an example for explanation, the two templates are respectively marked as a first template and a second template, the first template and the second template are oppositely arranged, the first template is provided with a first through hole, the second template is provided with a second through hole, the back ridge is respectively arranged on the outer sides of the first template and the second template, the sleeve is arranged between the first template and the second template, the wall penetrating screw rod sequentially penetrates through the first through hole, the sleeve and the second through hole, a nut is welded at one end of the wall penetrating screw rod, and the other end of the wall penetrating screw rod is locked on the corresponding back ridge through the fastening nuts. Cement is poured between the first formwork and the second formwork, and after the cement is solidified, the first formwork and the second formwork are removed, so that the wall body can be obtained, for example, as disclosed in the Chinese utility model patent application No. CN201821271233.5 (publication No. CN208686087U) 'formwork assembly for buildings'. In this process, the sleeve has two functions: firstly, a first template and a second template are separated by a certain distance to obtain a wall body with fixed thickness; and secondly, the wall-through screw in the protective sleeve is prevented from being adhered to cement, so that the wall-through screw can be conveniently taken down and can be recycled after the cement is solidified.

The use of a building formwork system is generally as follows: firstly, erecting a first template, placing a wall-penetrating screw rod into a first through hole from the outer side of the first template, and sleeving a sleeve on the wall-penetrating screw rod from the inner side of the first template; then, erecting a second template, wherein the sleeve is sleeved on the wall-penetrating screw and is positioned between the first template and the second template; when the second template is erected, the constructor also needs to simultaneously pass the wall-penetrating screw through the second through hole of the second template and extend out of the second template; finally, the other end of the through-wall screw is locked on the corresponding back edge through a fastening nut; and pouring cement between the first template and the second template, and taking down the through-wall screw for recycling after the cement is solidified.

In the above-described use, the building formwork system has the following problems: firstly, the sleeve can easily slide off the wall-penetrating screw; specifically, when the wall-through screw rod is not passed through the second template, that is, when one end of the wall-through screw rod between the first template and the second template is suspended, the wall-through screw rod sometimes sags due to its own weight, and at this time, the sleeve pipe is inclined downward and easily slides off the wall-through screw rod, and particularly when the second template is erected and the first template and the second template are both high, the sleeve pipe sliding between the first template and the second template is not easily picked up, and sometimes the sleeve pipe can be picked up only after the second template is removed, which is troublesome; secondly, when a new sleeve needs to be added, the sleeve installation efficiency is low; specifically, when a bushing is missed or a through-wall screw needs to be arranged in consideration of strength and safety (a new through hole needs to be arranged on the first template or the second template, and a new bushing and a new through-wall screw need to be arranged in the through hole), the second template which is already arranged needs to be disassembled and kept away from the first template for a certain distance to leave a space for operating the bushing before the first template and the second template are arranged in place and cement is poured; the using process of the building template system is repeated, namely, the wall-penetrating screw rod is placed into the first through hole of the first template from the outer side of the first template, the sleeve is sleeved on the wall-penetrating screw rod from the inner side of the first template, the second template is installed at a proper position again, and the wall-penetrating screw rod penetrates through the second through hole of the second template; therefore, after the first template and the second template are installed in place, if a new sleeve needs to be additionally arranged, the second template needs to be installed and disassembled for multiple times, the sleeve installation efficiency is low, and the construction cost is high; thirdly, the sleeve cannot be reused; specifically, after the cement is solidified into the wall body, the sleeve and the wall body are in a negative pressure state, so that the sleeve is not easy to detach from the wall body, and the sleeve cannot be reused.

In view of the above-mentioned first technical problem (the casing may easily slip off the wall screw) and the second technical problem (the casing is installed inefficiently when a new casing is added), there have been patents which have devised solutions. For example, the chinese utility model patent with application No. CN201720252637.9 (publication No. CN206625571U) ("template split structure with plug"), the template split structure is used for being pulled and connected between two oppositely arranged templates, the template is provided with template holes, the template split structure comprises a split screw and an elastic plug installed on the split screw; the elastic plug comprises a connecting sleeve sleeved on the counter-pull screw rod and an elastic sleeve sleeved on the connecting sleeve and used for plugging between the template hole and the counter-pull screw rod after the counter-pull screw rod penetrates through the template hole. When the second plug sleeve is installed from the outer side of the second template, the wall-through screw (namely, the counter-pull screw in the patent) extends out of the second template, namely, when the second plug sleeve is installed, one end of the wall-through screw passes through the second through hole of the second template and is not suspended between the first template and the second template, so that the sleeve (namely, the screw sleeve in the patent) cannot slip off from the wall-through screw; in addition, when a new sleeve needs to be additionally arranged, because the size of the outer wall of the screw sleeve is smaller than the aperture of the template, the elastic sleeve of the elastic plug has elasticity, so that the sleeve (namely the screw sleeve in the patent) can be sleeved outside the wall-through screw (namely the counter-pull screw in the patent) without disassembling the second template, and the sleeve installation efficiency is higher. The above patent does not show a solution for recycling the sleeve.

In response to the third technical problem (the inability of the sleeve to be reused), the following patents have devised solutions. For example, in the chinese utility model patent application No. CN200920206497.7 (publication No. CN201531116U), a recyclable wall duct is provided with an inflatable hollow elastic tube, which is pre-embedded in concrete as a tube in an inflated state, and the tube is easily taken out of the concrete due to its small size in an deflated state, so that the tube can be reused. For example, in the application of "a recyclable wall-through duct" in chinese invention with application number CN200910191068.1 (publication number CN101691811A), separable arc-shaped blocks are connected by a detachable hinge device, both ends of the duct can be sealed by a sealing rubber strip, or cotton yarns are inserted into the duct, after concrete is solidified, the sealing rubber is broken or the cotton yarns are taken out, a connecting pin of the detachable hinge device is pulled out, so that each separable arc-shaped block is separated and then taken out for reuse. The sleeve pipe in above-mentioned two patents can both be convenient for pull down back reuse, but above-mentioned two patents do not solve the sleeve pipe and easily the landing from the wall screw rod and add the problem that sleeve pipe installation effectiveness is low when new sleeve pipe.

In summary, the sleeve for the wall-penetrating screw and the wall-penetrating component using the sleeve can be further optimized.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the first technical problem that will solve is to prior art's current situation, provides the wall screw rod that wears that the size of pipe can radially be adjusted and uses the sleeve pipe.

The utility model aims to solve the second technical problem that a use has foretell wall screw rod to use sheathed tube wall subassembly.

The utility model provides a technical scheme that above-mentioned first technical problem adopted does: the utility model provides a wall is sleeve pipe for screw rod, includes the body, is equipped with in the body along the perforation that the axial link up, its characterized in that:

the radial size of the pipe body can be adjusted, the pipe body comprises a plurality of connecting walls and elastic thin walls, each connecting wall extends axially, and two adjacent connecting walls are connected through the elastic thin walls to form the pipe body in an enclosing manner;

the tubular body has a contracted state in which it is contracted radially inward in a natural state.

In order to stabilize the pipe body structure, the connecting wall has 9. Therefore, when the sleeve is in a contraction state, each connecting wall can form a unit, the total number of the sleeves is 3, the sleeves are arranged in a similar triangular shape, the structure is stable, and the sleeves are not easy to roll disorderly when being stored.

In order to facilitate the mutual approach of the connecting walls and the contraction of the sleeve after the sleeve is radially compressed, at least part of the connecting walls are designed into a wedge-shaped structure which becomes thinner gradually from the outside to the inside on the radial section of the pipe body.

For ease of manufacture, the tube is integrally formed.

The utility model provides a technical scheme that above-mentioned second technical problem adopted does: a wall-through assembly with the sleeve for the wall-through screw rod comprises the sleeve and the wall-through screw rod, and is characterized in that:

the guide piece can be connected with the wall-through screw, and the maximum outer wall size of the guide piece is smaller than or equal to the minimum outer wall size of the wall-through screw;

after the sleeve is radially extruded and shrinks inwards, the sleeve can be sleeved outside the guide piece, the size of the wall-through screw is smaller than the size of the through hole of the pipe body and is positioned outside the pipe body, and the guide piece can drive the pipe body to move under the action of external force;

when the wall-penetrating screw rod enters the through hole of the pipe body, the pipe body can expand outwards in the radial direction under the action of the wall-penetrating screw rod.

In order to facilitate the removal of the guide piece for recycling, the wall-through screw is detachably connected with the guide piece.

The detachable connection structure of the wall-penetrating screw rod and the guide piece can be various, preferably, the guide piece is provided with a first connecting part and a second connecting part connected with the first connecting part, the first connecting part is in a thin rod shape, the maximum outer wall size of the first connecting part is smaller than or equal to the minimum outer wall size of the second connecting part, one end of the second connecting part connected with the first connecting part is in a conical shape in the axial direction, one end of the second connecting part, far away from the first connecting part, is provided with a protruding block which extends axially and is provided with threads on the outer wall, and the wall-penetrating screw rod is provided with a threaded hole in threaded connection with the protruding. The guide piece is detachably connected with the wall-through screw rod through threaded connection of the threaded hole of the wall-through screw rod and the convex block; the first connecting part in the shape of a thin rod can conveniently extend into the sleeve and support the sleeve, and after cement is solidified, the first connecting part in the shape of a thin rod acts on the outer wall of the sleeve to enable the pipe body to contract inwards and be detached, so that the sleeve can be reused; when the sleeve is mounted in place, the guide part can be detached, so that the thin rod of the guide part is prevented from being scratched to constructors, and the guide part can be recycled. The wall screws and guides may also be removably connected by a keyed or pinned connection.

As an improvement, one end of the first connecting part, which is far away from the second connecting part, is in a conical shape. This facilitates the guide member to extend into the cannula to urge the cannula to move; the guide piece can be conveniently extended between the wall body and the outer wall of the sleeve to extend and retract the sleeve, so that the sleeve can be repeatedly used after being detached.

For ease of manufacture, the guide is integrally formed.

Compared with the prior art, the utility model has the advantages of: by arranging the elastic thin wall, the size of the pipe can be adjusted in the radial direction, and the pipe body has a contraction state formed by radially inwards contracting after being pressed in a natural state, so that after the pipe body is extruded to enable the size of the outer wall of the pipe body to be smaller than the aperture of the first through hole of the first template, a constructor can plug the pipe body into the first through hole of the first template from the outer side of the first template; then integrally accommodating the pipe body between the first template and the second template; therefore, a constructor can operate the sleeve on the outer side of the first template all the time, and the situation that the sleeve slides off the wall-through screw is reduced or avoided;

the size of the pipe can be adjusted in the radial direction, so that the pipe can act on the sleeve after cement is solidified, the sleeve can be disassembled by contracting inwards in the radial direction, and the pipe can be recycled;

the wall-through assembly with the sleeve for the wall-through screw is applied, the sleeve is pushed by the guide piece and is radially expanded outwards by the wall-through screw, so that the sleeve can be placed between the first template and the second template on the outer side of the first template, a constructor can always operate the sleeve on the outer side of the first template, the condition that the sleeve slides off the wall-through screw is reduced or avoided, and the operation is convenient;

the constructor can put into the through-wall screw one by one after all first templates and all second templates are installed, and does not need to put a corresponding through-wall screw into the second through hole of the second template when installing each second template, the utility model discloses can install sleeve pipe and through-wall screw one by one after all second templates are all installed, thus will install the step of second template and installing through-wall screw separately, have improved the efficiency of construction;

when a new sleeve needs to be additionally arranged (for example, a sleeve is neglected to be installed or a new wall-penetrating screw needs to be added), the second template does not need to be detached to be placed into the sleeve, the sleeve can be directly radially compressed to be placed into the first through hole of the first template, and then the sleeve is placed between the first template and the second template, so that the times of detaching and installing the second template are reduced, and the installing efficiency of the sleeve is improved;

when the cement is solidified to form a wall body, the cement acts on the outer wall of the elastic thin wall of the sleeve and applies force inwards, so that the sleeve is convenient to take out from the wall body after being radially contracted inwards, and the sleeve can be repeatedly used.

Drawings

Fig. 1 is a schematic perspective view of a sleeve for a wall screw according to an embodiment of the present invention;

FIG. 2 is a schematic view from another angle of FIG. 1;

fig. 3 is another schematic perspective view of the sleeve for a wall screw according to the embodiment of the present invention;

FIG. 4 is a schematic view from another angle of FIG. 3;

fig. 5 is another schematic perspective view of a sleeve for a wall screw according to an embodiment of the present invention;

FIG. 6 is a schematic view from another angle of FIG. 5;

FIG. 7 is a perspective view of a building formwork system (with the wall penetrating components uninstalled);

FIG. 8 is a schematic view from another angle of FIG. 7;

FIG. 9 is a longitudinal cross-sectional view of FIG. 7;

fig. 10 is a perspective view of the sleeve in the wall penetrating component according to the first embodiment of the present invention after being placed in the first through hole of the first template;

FIG. 11 is a schematic view from another angle of FIG. 10;

FIG. 12 is a schematic view of FIG. 10 from yet another angle;

FIG. 13 is a longitudinal cross-sectional view of FIG. 10;

fig. 14 is a perspective view of the wall-penetrating component according to the embodiment of the present invention installed behind the first through hole of the first template (after the sleeve is placed in the first through hole of the first template, the wall-penetrating screw acts on the sleeve);

fig. 15 is a perspective view of a wall screw and a guide member in a wall assembly according to a first embodiment of the present invention;

FIG. 16 is an exploded view of FIG. 15;

FIG. 17 is a cross-sectional view of FIG. 15;

FIG. 18 is a longitudinal cross-sectional view of FIG. 14;

fig. 19 is a schematic perspective view of a wall penetrating assembly according to an embodiment of the present invention installed in place in a building formwork system;

FIG. 20 is a schematic view from another angle of FIG. 19;

FIG. 21 is a longitudinal cross-sectional view of FIG. 19;

FIG. 22 is an enlarged view of detail A of FIG. 21;

FIG. 23 is a schematic view of a further angle of FIG. 19;

FIG. 24 is an enlarged view of detail B of FIG. 23;

FIG. 25 is the schematic view of FIG. 23 with the wall screws removed;

fig. 26 is an enlarged view of a portion C in fig. 25.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Example 1:

as shown in fig. 1 to 6, the present invention is a preferred embodiment of a sleeve for a wall screw according to an embodiment of the present invention. The sleeve for the wall-penetrating screw comprises an integrally formed pipe body 1, wherein a through hole 1a which is through along the axial direction is formed in the pipe body 1, and the radial size of the pipe body 1 can be adjusted;

the tubular body 1 has a contracted state which can be contracted radially inwardly after being compressed in a natural state, for example, the natural state of the sleeve in the present embodiment may be the state shown in fig. 1 and 2, and the contracted state may be the state shown in fig. 3 and 4 and the state shown in fig. 5 and 6 may be the expanded state of the sleeve; in other embodiments, fig. 5 and 6 can be the natural state of the sleeve, and fig. 1 to 4 are all the contracted states of the sleeve;

the pipe body 1 comprises a connecting wall 11 and an elastic thin wall 12; the connecting walls 11 are provided with a plurality of connecting walls 11, and in order to facilitate the radial inward contraction and the radial outward expansion of the pipe body, the number of the connecting walls 11 is at least 3; preferably, in this embodiment, there are 9 connecting walls, so that when the sleeve is in the contracted state, every 3 connecting walls 11 can be combined into one unit, the sleeve has 3 units and is arranged like a triangle, the structure is stable, and the sleeve is not easy to roll when stored; each connecting wall 11 extends axially, and two adjacent connecting walls 11 are connected through an elastic thin wall 12 to form a pipe body 1; each connecting wall 11 is designed as a wedge-shaped structure that becomes thinner gradually from the outside to the inside in a radial section of the tubular body 1;

the sleeve for the wall-penetrating screw rod is used as follows:

the use process of the sleeve in the building template system is taken as an example for explanation.

The building template system comprises a first template 2, a second template 3 and a sleeve; the first template 2 and the second template 3 are oppositely arranged, the first template 2 is provided with a first through hole 2a, and the second template 3 is provided with a second through hole 3 a; the building template system can adopt a wood template, an aluminum template or other building templates needing sleeves;

forming the sleeve, for example into a sleeve as shown in figures 1 and 2;

the molded sleeve is extruded by external force, so that the contour line of the elastic thin wall 12 is obvious, and the sleeve can be rapidly contracted inwards and expanded outwards in the radial direction after being stressed in the subsequent use process;

in the case of a construction formwork system, the radial dimension of the tubular body 1 is adjusted by pressing the tubular body 1 radially inward, so that the tubular body 1 is contracted radially inward (for example, the tubular body 1 is contracted to the state of fig. 3 and 4) to the extent that the dimension of the outer wall of the tubular body 1 can be smaller than the diameter of the first through-hole 2a of the first formwork 2 for accommodating the tubular body 1, and the tubular body 1 can be inserted into the first through-hole 2a of the first formwork 2 from the outside of the first formwork 2;

the size of the inner wall of the pipe body 1 can be adjusted, and the pipe body 1 can be integrally accommodated between the first formwork 2 and the second formwork 3 by expanding the pipe body 1 radially outwards (for example, expanding the pipe body 1 to the state of fig. 5 and 6) until the size of the inner wall of the pipe body 1 is larger than the aperture of the first through hole 2a, so that a constructor can operate the casing pipe on the outer side of the first formwork 2 all the time, and the situation that the casing pipe slides from the wall screw 4 is reduced or avoided;

because of body 1 radial inside pressurized back, the radial dimension of body can be adjusted to dismantle after the cement solidifies, ability reuse of being convenient for.

As shown in fig. 7 to 26, the embodiment of the present invention further provides a wall-penetrating assembly to which the above-mentioned sleeve for a wall-penetrating screw is applied. The use process of the wall penetrating component in the building template system is taken as an example for explanation. Likewise, the building formwork system comprises a first formwork 2, a second formwork 3, a back ridge 5 and a wall penetrating component; the first template 2 and the second template 3 are oppositely arranged, the first template 2 is provided with a first through hole 2a, and the second template 3 is provided with a second through hole 3 a; the building formwork system may be used with wooden formwork, aluminum formwork, or other building formwork requiring the use of wall penetrating components. The wall penetrating assembly comprises a sleeve, a wall penetrating screw rod 4 and a guide piece 6;

the left end of the wall-through screw rod 4 is provided with a threaded hole 41;

the guide piece 6 can be connected with the wall screw 4, and preferably, the wall screw 4 is detachably connected with the guide piece 6; specifically, the guide member 6 has a first connection portion 61 and a second connection portion 62 connected to the first connection portion 61, in order to facilitate the guide of the movement of the tube body 1; the first connecting portion 61 is a thin rod shape in the present embodiment and has a maximum outer wall size equal to the minimum outer wall size of the second connecting portion 62, and in other embodiments, the maximum outer wall size of the first connecting portion 61 may be smaller than the minimum outer wall size of the second connecting portion 62; one end of the second connecting part 62 connected with the first connecting part 61 is tapered in the axial direction, one end of the second connecting part 62 far away from the first connecting part 61 is provided with a projection 621 which extends in the axial direction and is threaded on the outer wall, and the projection 621 is in threaded connection with the threaded hole 41 of the wall-through screw; for ease of manufacture, the guide 6 may be integrally formed;

in this embodiment, the maximum outer wall dimension of the guide 6 is equal to the minimum outer wall dimension of the wall screw 4; in other embodiments, the maximum outer wall dimension of the guide 6 may also be less than the minimum outer wall dimension of the wall screw 4;

after the sleeve is radially extruded and shrinks inwards, the pipe body 1 can penetrate through the first through hole 2a of the first template 2, in the shrinking state, the sleeve can be sleeved outside the guide piece 6, at the moment, the size of the wall-penetrating screw rod 4 is smaller than the through hole 1a of the pipe body 1 and is positioned outside the pipe body 1, and under the action of external force, the guide piece 6 can drive the pipe body 1 to move towards the second template 3;

when the wall-penetrating screw 4 enters the through hole 1a of the pipe body 1, the pipe body 1 can expand radially outwards under the action of the wall-penetrating screw 4, so that a first end of the pipe body 1 close to the inner side of the first template 41 can abut against the position of the first template 2 adjacent to the first through hole 2a, and a second end of the pipe body 1 close to the inner side of the second template 3 can abut against the position of the second template 3 adjacent to the second through hole 3a, and thus the pipe body 1 can be accommodated between the first template 2 and the second template 3 after being expanded; preferably, in this embodiment, when the pipe body 1 is in the expanded state, the size of the outer wall of the pipe body 1 is denoted as D1, the aperture of the first through hole 2a of the first template 2 and the aperture of the second through hole 3a of the second template 3 are both denoted as D2, the size of the outer wall of the wall screw 4 is denoted as D3, D1 > D2 > D3, and in other embodiments, D2 ═ D3 may also be used;

in the embodiment, the back edges 5 are respectively arranged at the outer sides of the first template 2 and the second template 3, and the wall-through screw rod 4 is arranged in the through hole 1a of the pipe body 1 in a penetrating way and is locked on the corresponding back edges 5 through the fastening nut 7; in other embodiments, the back edge 5 may not be provided, so that the wall screws 4 are directly fastened to the second formwork 3 by means of the fastening nuts 7.

The through-wall assembly is used as follows.

The description is provided in terms of the use of the wall penetrating component in the building formwork system.

As shown in fig. 7 to 9, all the first formworks 2 and all the second formworks 3 are installed;

as shown in fig. 10 to 13, the sleeves are installed one by one, the sleeves are radially extruded to cause the pipe body 1 to radially contract inwards, and the sleeves are placed into the corresponding first through holes 2a one by one from the outer side of the first template 2;

as shown in fig. 14 to 18, the guide member 6 is attached to the wall screw 4; the sleeve is radially extruded and contracted inwards, and then can be plugged into the first through hole 2a of the first template 2, the sleeve can be sleeved outside the guide piece 6 at the moment, the size of the wall-through screw 4 is smaller than the through hole 1a of the pipe body 1 and is positioned outside the pipe body 1, and the guide piece 6 can drive the pipe body 1 to move under the action of external force; the first connecting part 61 of the guide piece 6 is in a thin rod shape, so that the first connecting part can conveniently extend into the pipe body 1 to push the pipe body 1 to move towards the second template 3; the second connecting part 62 of the guide piece 6 is convenient to extend into the pipe body 1 because one end connected with the first connecting part 61 is conical in the axial direction;

as shown in fig. 17 to 26, the constructor continues to apply force to the wall-through screw 4, and the sleeve can be accommodated between the first formwork 2 and the second formwork 3 after being separated from the first through hole 2a of the first formwork 2; then, the wall-through screw 4 gradually extends into the through hole 1a of the sleeve, and because the size of the minimum outer wall of the wall-through screw 4 is equal to the size of the maximum outer wall of the guide 6, at this time, under the action of the wall-through screw 4, the sleeve expands radially outwards, so that the size of the outer wall of the pipe body 1 close to the first end of the first template 2 is larger than the aperture of the first through hole 2a of the first template 2, and thus the first end of the pipe body 1 can be abutted against the position of the first template 2 adjacent to the first through hole 2a, and the size of the outer wall of the pipe body 1 close to the second end inside the second template 3 is also larger than the aperture of the second through hole 3a of the second template 3, and thus the second end of the pipe body 1 can be abutted against the position of the second template 3 adjacent to the;

the constructor continues to apply force to the through-wall screw 4, so that the through-wall screw 4 extends out of the second through hole 3a of the second template 3, and the through-wall screw 4 is installed in place; the constructor dismantles the guide piece 6, and then locks the other end of the wall-through screw rod 4 on the corresponding back ridge 5 through the fastening nut 7;

the detached guide 6 can be used for the installation of the next wall screw 4;

when a new sleeve needs to be additionally arranged, the second template 3 does not need to be disassembled to be placed in the sleeve, the sleeve can be directly compressed radially inwards by the method to be placed in the first through hole 2a of the first template 2 and then placed between the first template 2 and the second template 3, the times of disassembling and assembling the second template 2 are reduced, and therefore the installing efficiency of the sleeve is improved; that is, in this embodiment, after all the first formworks 2 and all the second formworks 3 are installed, new sleeves can be added, so that new sleeves can be added when the sleeves are not installed and the wall-through screws need to be temporarily added;

then, cement is poured between the first template 2 and the second template 3, and the wall-penetrating screw rod 4 is protected by the sleeve, so that the wall-penetrating screw rod 4 cannot be adhered to the cement; the sleeve also enables the first template and the second template to be separated by a certain distance to obtain a wall body with fixed thickness;

after the cement is solidified to form a wall body, the fastening nut 7 is detached, and the wall-through screw rod 4 is taken out from the sleeve and can be repeatedly used; the first connection 61 of the guide 6 can also be pressed against the outer wall of the flexible wall 12 of the sleeve and exert a force inwards, so that the sleeve can be conveniently taken out of the wall after being contracted inwards in the radial direction, and the sleeve can be reused.

Claims (9)

1. The utility model provides a wall is sleeve pipe for screw rod, includes body (1), is equipped with in body (1) along the perforation (1a) that the axial link up, its characterized in that:

the radial size of the pipe body (1) can be adjusted, the pipe body (1) comprises a plurality of connecting walls (11) and elastic thin walls (12), each connecting wall (11) extends axially, and two adjacent connecting walls (11) are connected through the elastic thin walls (12) to form the pipe body (1);

the tube body (1) has a contracted state formed by contracting radially inward after being pressed in a natural state.

2. The bushing for a wall-penetrating screw according to claim 1, wherein: the number of the connecting walls (11) is 9.

3. The bushing for a wall-penetrating screw according to claim 1, wherein: at least part of the connecting wall (11) is designed as a wedge-shaped structure tapering from the outside inwards in a radial cross section of the tubular body (1).

4. The bushing for a wall-penetrating screw according to claim 1, wherein: the pipe body (1) is integrally formed.

5. A wall-penetrating assembly using a bushing for a wall-penetrating screw according to any one of claims 1 to 4, comprising the bushing and the wall-penetrating screw (4), characterized in that:

the guide piece (6) can be connected with the wall-through screw (4), and the maximum outer wall size of the guide piece (6) is smaller than or equal to the minimum outer wall size of the wall-through screw (4);

after the sleeve is radially extruded and shrinks inwards, the sleeve can be sleeved outside the guide piece (6), at the moment, the size of the wall-penetrating screw rod (4) is smaller than the through hole (1a) of the pipe body (1) and is positioned outside the pipe body (1), and the guide piece (6) can drive the pipe body (1) to move under the action of external force;

when the wall-through screw (4) enters the through hole (1a) of the pipe body (1), the pipe body (1) can expand outwards in the radial direction under the action of the wall-through screw (4).

6. A wall feed-through assembly as defined in claim 5, wherein: the wall-through screw rod (4) is detachably connected with the guide piece (6).

7. A wall feed-through assembly as defined in claim 6, wherein: the guide piece (6) is provided with a first connecting portion (61) and a second connecting portion (62) connected with the first connecting portion (61), the first connecting portion (61) is in a thin rod shape, the maximum outer wall size of the first connecting portion is smaller than or equal to the minimum outer wall size of the second connecting portion (62), one end, connected with the first connecting portion (61), of the second connecting portion (62) is in a conical shape in the axial direction, one end, far away from the first connecting portion (61), of the second connecting portion (62) is provided with a protruding block (621) which extends axially and is provided with threads on the outer wall, and the wall penetrating screw rod (4) is provided with a threaded hole (41) in threaded connection with the protruding block (621).

8. A wall feed-through assembly as defined in claim 7, wherein: one end, far away from the second connecting part (62), of the first connecting part (61) is in a conical shape.

9. A wall penetrating assembly as claimed in any one of claims 5 to 8 wherein: the guide piece (6) is integrally formed.

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