CN113585500A - Core-hitting heat-breaking bridge anchor bolt for building heat insulation system and mounting method thereof - Google Patents
Core-hitting heat-breaking bridge anchor bolt for building heat insulation system and mounting method thereof Download PDFInfo
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- CN113585500A CN113585500A CN202110879079.XA CN202110879079A CN113585500A CN 113585500 A CN113585500 A CN 113585500A CN 202110879079 A CN202110879079 A CN 202110879079A CN 113585500 A CN113585500 A CN 113585500A
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- 238000009413 insulation Methods 0.000 title claims abstract description 140
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004873 anchoring Methods 0.000 claims abstract description 54
- 238000010009 beating Methods 0.000 claims abstract description 25
- 238000001125 extrusion Methods 0.000 claims abstract description 10
- 239000004033 plastic Substances 0.000 claims description 17
- 229920003023 plastic Polymers 0.000 claims description 17
- 238000005553 drilling Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 239000012783 reinforcing fiber Substances 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 16
- 239000002585 base Substances 0.000 description 23
- 238000010276 construction Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/762—Exterior insulation of exterior walls
- E04B1/7629—Details of the mechanical connection of the insulation to the wall
Abstract
A core-beating heat-breaking bridge anchor bolt for a building heat-insulation system and an installation method thereof are disclosed, wherein the core-beating heat-breaking bridge anchor bolt is divided into two forms, namely a core-beating heat-breaking bridge anchor bolt comprises a heat-breaking bridge bolt, an internal thread expansion sleeve and a core nail, and a core-beating heat-breaking bridge anchor bolt comprises a heat-breaking bridge bolt, an internal thread screwed pipe, an external thread expansion sleeve and a core nail; the installation method of the one-shot broken-core heat bridge anchor bolt comprises the following steps: adhering a heat insulation board outside a base layer wall, installing an internal thread expansion sleeve in a drilled hole, performing extrusion expansion on an expansion section of the internal thread expansion sleeve by hammering and with the help of a core nail to form anchoring connection with the base layer wall, and finally installing a heat bridge breaking bolt; the installation method of the anchor bolt of the form two-shot core heat-breaking bridge comprises the following steps: the insulation board is pasted outside the base wall, the internal thread screwed pipe and the external thread expansion sleeve are installed in the drill hole, the external thread expansion sleeve expansion section is extruded and expanded through hammering and by means of the core nail, the core nail and the base wall form anchoring connection, and finally the thermal bridge breaking bolt is installed.
Description
Technical Field
The invention belongs to the technical field of building heat preservation, and particularly relates to a core-beating heat-breaking bridge anchor bolt for a building heat preservation system and an installation method thereof.
Background
The external thermal insulation system of the building is used as an important component part for building energy conservation, the thermal insulation board is usually anchored on a building structure by adopting an anchoring part, and the thermal bridge breaking performance and the mechanical property of the anchoring part are important for the performance and the safety of the thermal insulation system.
For a traditional building heat insulation system, a construction method that a wall body is constructed firstly and then an anchor heat insulation plate is adhered is mostly adopted, and the adopted traditional heat insulation anchor bolt utilizes the expansion force of a plastic sleeve and can only generate 0.6KN of anchoring drawing force, so that the phenomenon that the heat insulation plate together with the heat insulation anchor bolt is integrally drawn out and falls off is often caused, and great potential safety hazards are generated.
Although the construction process of the external thermal insulation system of the external wall adopting a cementing agent or an anchor bolt and combining the two modes is forbidden in new buildings in partial areas, the conventional construction method is still needed in a large amount of existing building reconstruction, and especially in the reconstruction of the buildings with ultra-low energy consumption or nearly zero energy consumption of the existing buildings, how to ensure the mechanical property of the anchoring part and the thermal bridge breaking property of the anchoring part when the thermal insulation board with the thickness of more than 200mm is in the anchoring process becomes a key problem to be solved urgently.
The Chinese patent application with publication number 201820450507.0 discloses a heat-bridge-cutoff anchor bolt, which adopts a plastic-coated rib structure made of non-metal composite materials to block a heat bridge of the anchor bolt, and the pulling force of the anchor bolt is improved in a bolt fastening mode.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a core-beating heat-insulation bridge-breaking anchor bolt for a building heat-insulation system and an installation method thereof, which are suitable for an external wall heat-insulation system construction process adopting a cementing agent or an anchor bolt and combining the two modes, can fully play the reliable anchoring strength of a metal expansion anchoring part, can provide reliable fastening force for a heat-insulation plate through the threaded connection of a heat-insulation bridge-breaking bolt and a metal expansion part, realize the heat-insulation bridge-breaking effect of the heat-insulation anchor bolt, have the pulling resistance far higher than that of the traditional heat-insulation anchor bolt, and can realize the reliable anchoring of a large-thickness heat-insulation plate.
In order to achieve the purpose, the invention adopts the following technical scheme: a core-beating heat-insulation bridge anchor bolt for a building heat-insulation system comprises a heat-insulation bridge bolt, an internal thread expansion sleeve and a core nail; the heat-insulating bridge bolt consists of an anchoring disc and a screw rod, the anchoring disc is coaxially and fixedly arranged at one end of the screw rod, and the outer surface of the screw rod is provided with an external thread; the internal thread expansion sleeve is divided into a thread section and an expansion section, internal threads are arranged on the inner surface of the internal thread expansion sleeve of the thread section, a cross-shaped fracture is arranged on the pipe body of the internal thread expansion sleeve of the expansion section, and friction grains are arranged on the outer surface of the pipe body of the internal thread expansion sleeve of the expansion section; the screw of the heat-insulation bridge bolt is in threaded connection and fastening fit with the thread section of the internal thread expansion sleeve; the core nail is matched with the internal thread expansion sleeve in an extruding and expanding mode.
An inner thread screwed pipe and an outer thread screwed pipe for adjusting the stroke of the heat-insulated bridge bolt are arranged between the screw rod of the heat-insulated bridge bolt and the thread section of the internal thread expansion sleeve; the inner surface of the inner thread screw pipe is provided with an internal thread, and the outer surface of the outer thread screw pipe is provided with an external thread; the screw of the heat-insulating bridge bolt is in threaded connection and fastening fit with one end of the inner threaded pipe, the other end of the inner threaded pipe is in threaded connection and fastening fit with one end of the outer threaded pipe, and the other end of the outer threaded pipe is in threaded connection and fastening fit with the thread section of the inner thread expansion sleeve.
The core nail comprises two structural forms, namely an internal structure and an external structure; when the core nail is of a built-in structure, the core nail is divided into a cylindrical section and a necking conical section, the inner surface of the expansion section of the internal thread expansion sleeve is of a necking conical surface structure, the cylindrical section of the core nail is positioned in the thread section of the internal thread expansion sleeve, and the necking conical section of the core nail is positioned in the expansion section of the internal thread expansion sleeve; when the core nail is of an external structure, the core nail is divided into a cylindrical section and a flaring conical section, the inner surface of the expansion section of the internal thread expansion sleeve is of an isometric cylindrical surface structure, the cylindrical section of the core nail is positioned inside the expansion section of the internal thread expansion sleeve, and the flaring conical section of the core nail is positioned outside the expansion section of the internal thread expansion sleeve.
The heat-insulation bridge bolt is made of plastics, and reinforcing fibers are mixed in the plastics or fiber composite material ribs are embedded in the plastics.
The internal thread expansion sleeve and the core nail are made of metal.
The installation method of the core-hitting heat-breaking bridge anchor bolt for the building heat insulation system comprises the following steps:
the method comprises the following steps: sticking the new insulation board on the outer surface of the base layer wall body or the outer surface of the original insulation system by adopting an adhesive, and simultaneously determining the position of an anchor bolt;
step two: drilling a hole from the outer surface of the new insulation board to the base layer wall by using an electric drill at the determined anchor bolt position until the drilling depth of the base layer wall reaches the minimum anchoring depth of the broken heat bridge anchor bolt;
step three: sending the expansion section of the internal thread expansion sleeve provided with the core nail into the drill hole inwards;
step four: firstly, when the core nail is of a built-in structure, preparing a lengthened ejector rod with the diameter smaller than the inner diameter of the threaded section of the internal thread expansion sleeve, firstly, penetrating the lengthened ejector rod into the threaded section of the internal thread expansion sleeve through a drill hole and abutting against the cylindrical section of the core nail, pushing the expansion section of the internal thread expansion sleeve towards the bottom of the drill hole through the lengthened ejector rod until the expansion section of the internal thread expansion sleeve abuts against the bottom of the drill hole, then hammering the lengthened ejector rod outside the drill hole until the core nail is hammered to the bottom of the drill hole, and enabling the expansion section of the internal thread expansion sleeve to expand outwards and form anchoring connection with a base wall under the extrusion and expansion action of the core nail; secondly, when the core nail is of an external structure, preparing a lengthened ejector rod with the diameter smaller than the bore diameter of the drill hole and larger than the inner diameter of the thread section of the internal thread expansion sleeve, firstly sending the lengthened ejector rod into the drill hole and abutting against the thread section of the internal thread expansion sleeve, pushing the expansion section of the internal thread expansion sleeve towards the bottom of the drill hole through the lengthened ejector rod until the core nail abuts against the bottom of the drill hole, then hammering the lengthened ejector rod outside the drill hole, and expanding the expansion section of the internal thread expansion sleeve outwards under the extrusion and expansion effects of the core nail until the expansion section of the internal thread expansion sleeve forms anchoring connection with the base wall;
step five: and (3) extracting the lengthened ejector rod from the drilled hole, inserting a screw rod of the heat-breaking bridge bolt into the drilled hole, and screwing the heat-breaking bridge bolt to enable the screw rod to be in threaded connection with the thread section of the internal thread expansion sleeve until an anchoring disc of the heat-breaking bridge bolt is tightly attached to the outer surface of the new heat insulation board.
A core-beating heat-insulation bridge-breaking anchor bolt for a building heat-insulation system comprises a heat-insulation bridge-breaking bolt, an inner thread screw pipe, an external thread expansion sleeve and a core nail; the heat-insulating bridge bolt consists of an anchoring disc and a screw rod, the anchoring disc is coaxially and fixedly arranged at one end of the screw rod, and the outer surface of the screw rod is provided with an external thread; the inner surface of the internal thread screw pipe is provided with internal threads; the external thread expansion sleeve is divided into a thread section and an expansion section, an external thread is arranged on the outer surface of the thread section, a cross-shaped fracture is arranged on the external thread expansion sleeve body of the expansion section, and friction grains are arranged on the outer surface of the external thread expansion sleeve body of the expansion section; the screw of the heat-insulation bridge bolt is in threaded connection and fastening fit with the internal thread screwed pipe, and the thread section of the external thread expansion sleeve is in threaded connection and fastening fit with the internal thread screwed pipe; the core nail is matched with the expansion section of the external thread expansion sleeve in an extruding and expanding manner.
The core nail is divided into a nail body section and a nail tip section; the expansion section inner surface of the external thread expansion sleeve adopts a cylindrical hole structure, the joint of the expansion section cylindrical hole and the thread section inner surface is a necking conical surface structure, the nail body section of the core nail is positioned inside the thread section of the external thread expansion sleeve, and the nail tip section of the core nail is positioned at the joint of the expansion section cylindrical hole and the thread section inner surface.
The heat-insulation bridge bolt is made of plastics, and reinforcing fibers are mixed in the plastics or fiber composite material ribs are embedded in the plastics.
The inner thread screwed pipe, the external thread expansion sleeve and the core nail are made of metal.
The installation method of the core-hitting heat-breaking bridge anchor bolt for the building heat insulation system comprises the following steps:
the method comprises the following steps: sticking the new insulation board on the outer surface of the base layer wall body or the outer surface of the original insulation system by adopting an adhesive, and simultaneously determining the position of an anchor bolt;
step two: drilling a hole from the new insulation board to the base layer wall vertically by using an electric drill at the determined anchor bolt position until the drilling depth of the base layer wall reaches the minimum anchoring depth of the broken heat bridge anchor bolt;
step three: the internal thread screwed pipe and the external thread expansion sleeve are screwed together, and then the external thread expansion sleeve expansion section screwed with the internal thread screwed pipe and provided with the core nail is conveyed inwards into the drill hole;
step four: preparing a lengthened ejector rod with the diameter smaller than the inner diameter of the inner threaded pipe, penetrating the lengthened ejector rod into the inner threaded pipe through a drill hole and abutting against the shank section of the core nail needle, pushing the expansion section of the external thread expansion sleeve towards the bottom of the drill hole through the lengthened ejector rod until the expansion section of the external thread expansion sleeve abuts against the bottom of the drill hole, hammering the lengthened ejector rod outside the drill hole until the core nail is hammered to the bottom of the drill hole, and expanding the expansion section of the external thread expansion sleeve outwards under the extrusion expansion effect of the core nail and forming anchoring connection with the base wall;
step five: and (3) drawing the lengthened ejector rod out of the drilled hole, inserting a screw rod of the thermal bridge cutoff bolt into the drilled hole, and screwing the thermal bridge cutoff bolt to enable the screw rod to be in threaded connection with the inner thread screw pipe until an anchoring disc of the thermal bridge cutoff bolt is tightly attached to the outer surface of the new insulation board.
The invention has the beneficial effects that:
the core-beating heat-insulation bridge-breaking anchor bolt for the building heat-insulation system and the installation method thereof are suitable for the construction process of the external wall heat-insulation system adopting cementing agent or anchor bolt and combining the two modes, can fully play the reliable anchoring strength of the metal expansion anchoring part, can provide reliable fastening force for the heat-insulation plate through the screw connection of the heat-insulation bridge-breaking bolt and the metal expansion part, realize the heat-insulation bridge-breaking effect of the heat-insulation anchor bolt, have the pulling resistance far greater than that of the traditional heat-insulation anchor bolt, and can realize the reliable anchoring of the heat-insulation plate with large thickness.
Drawings
FIG. 1 is a schematic structural view of a core-beating heat-insulation bridge-breaking anchor bolt (heat-insulation bridge bolt + internal thread expansion sleeve) for a building heat-insulation system according to the present invention;
FIG. 2 is an exploded view of a core-impacting heat-insulating bridge anchor bolt (heat-insulating bridge bolt + internal thread expansion sleeve) for a building heat-insulating system according to the present invention;
FIG. 3 is a schematic view of the assembly structure of the internal thread coil, external thread coil and internal thread expansion sleeve of the present invention;
FIG. 4 is an exploded view of the assembly of the internal thread coil, external thread coil and internally threaded expansion sleeve of the present invention;
FIG. 5 is a schematic view of the assembly of the internally threaded expansion sleeve of the present invention with a frustoconical core pin (built-in);
FIG. 6 is a schematic view of the assembly of the internally threaded expansion sleeve of the present invention with a frustoconical core pin (external);
FIG. 7 is a schematic structural view of the frustum-shaped core pin (built-in type) of the present invention;
FIG. 8 is a schematic structural view of a frustoconical core pin (external) of the present invention;
FIG. 9 is a diagram showing the installation effect of a core-beating heat-insulation bridge-breaking anchor bolt (heat-insulation bridge-breaking bolt + internal thread expansion sleeve) for the building heat-insulation system of the present invention (base wall + new heat-insulation board);
FIG. 10 is a diagram showing the installation effect of a core-beating heat-insulation bridge-breaking anchor bolt (heat-insulation bridge bolt + internal thread expansion sleeve) for a building heat-insulation system of the present invention (base wall + old heat-insulation board + new heat-insulation board);
FIG. 11 is a schematic structural view of a core-beating heat-insulation bridge bolt (heat-insulation bridge bolt + internal thread screw tube + external thread expansion sleeve) for the building heat-insulation system of the present invention;
FIG. 12 is an exploded view of a core-impacting heat-insulating bridge bolt (heat-insulating bridge bolt + internal threaded tube + external threaded expansion sleeve) for a building insulation system according to the present invention;
FIG. 13 is a schematic view of the externally threaded expansion sleeve of the present invention assembled with a needle core pin;
FIG. 14 is a schematic structural view of a needle core pin according to the present invention;
FIG. 15 is a view showing the installation effect of a core-beating heat-insulation bridge-breaking anchor bolt (heat-insulation bridge-breaking bolt + internal thread screw tube + external thread expansion sleeve) for the building heat-insulation system of the present invention (base wall + new heat-insulation board);
FIG. 16 is a diagram showing the installation effect of a core-beating heat-insulation bridge-breaking anchor bolt (heat-insulation bridge-breaking bolt + internal thread screw tube + external thread expansion sleeve) for a building heat-insulation system (base wall + old heat-insulation board + new heat-insulation board);
in the figure, 1-heat bridge breaking bolt, 11-anchoring disc, 12-screw rod, 2-internal thread expansion sleeve, 21-thread section, 22-expansion section, 3-frustum type core nail, 31-cylindrical section, 32-necking conical section, 33-flaring conical section, 4-internal thread screw tube, 41-external thread screw tube, 5-external thread expansion sleeve, 6-needle type core nail, 61-needle handle section, 62-needle tip section, 7-adhesive, 8-new heat insulation board, 9-base wall and 10-old heat insulation board.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1 to 8, a core-beating heat-insulation bridge anchor bolt for a building heat-insulation system comprises a heat-insulation bridge bolt 1, an internal thread expansion sleeve 2 and a core nail; in this embodiment, the core nail is specifically a frustum-shaped core nail 3; the heat-insulation bridge bolt 1 consists of an anchoring disc 11 and a screw 12, wherein the anchoring disc 11 is coaxially and fixedly arranged at one end of the screw 12, and the outer surface of the screw 12 is provided with an external thread; the internal thread expansion sleeve 2 is divided into a thread section 21 and an expansion section 22, an internal thread is arranged on the inner surface of the internal thread expansion sleeve 2 of the thread section 21, a cross-shaped fracture is arranged on the tube body of the internal thread expansion sleeve 2 of the expansion section 22, and friction grains are arranged on the outer surface of the tube body of the internal thread expansion sleeve 2 of the expansion section 22; the screw 12 of the heat-insulation bridge bolt 1 is in threaded connection and fastening fit with the threaded section 21 of the internal thread expansion sleeve 2; the frustum-shaped core nail 3 is matched with the expansion section 22 of the internal thread expansion sleeve 2 in an extruding and expanding way.
An inner thread screwed pipe 4 and an outer thread screwed pipe 41 for adjusting the stroke of the heat-breaking bridge bolt 1 are arranged between the screw 12 of the heat-breaking bridge bolt 1 and the thread section 21 of the internal thread expansion sleeve 2; the inner surface of the inner thread screw pipe 4 is provided with an internal thread, and the outer surface of the outer thread screw pipe 41 is provided with an external thread; the screw 12 of the heat-insulation bridge bolt 1 is in threaded connection and fastening fit with one end of the inner threaded pipe 4, the other end of the inner threaded pipe 4 is in threaded connection and fastening fit with one end of the outer threaded pipe 41, and the other end of the outer threaded pipe 41 is in threaded connection and fastening fit with the threaded section 21 of the internal thread expansion sleeve 2.
The frustum type core nail 3 comprises two structural forms, namely an internal type and an external type; when the frustum-type core nail 3 is of a built-in structure, the frustum-type core nail 3 is divided into a cylindrical section 31 and a necking conical section 32, the inner surface of the expansion section 22 of the internal thread expansion sleeve 2 is of a necking conical surface structure, the cylindrical section 31 of the frustum-type core nail 3 is positioned inside the thread section 21 of the internal thread expansion sleeve 2, and the necking conical section 32 of the frustum-type core nail 3 is positioned inside the expansion section 22 of the internal thread expansion sleeve 2; when the frustum-type core nail 3 is of an external structure, the frustum-type core nail 3 is divided into a cylindrical section 31 and a flaring conical section 33, the inner surface of the expansion section 22 of the internal thread expansion sleeve 2 is of an isometric cylindrical surface structure, the cylindrical section 31 of the frustum-type core nail 3 is positioned inside the expansion section 22 of the internal thread expansion sleeve 2, and the flaring conical section 33 of the frustum-type core nail 3 is positioned outside the expansion section 22 of the internal thread expansion sleeve 2.
The heat-insulation bridge bolt 1 is made of plastic, and reinforcing fibers are mixed in the plastic or fiber composite material ribs are embedded in the plastic.
The internal thread expansion sleeve 2 and the frustum type core nail 3 are made of metal.
The installation method of the core-hitting heat-breaking bridge anchor bolt for the building heat insulation system comprises the following steps:
the method comprises the following steps: adopting an adhesive 7 to stick a new insulation board 8 on the outer surface of a base layer wall 9 or on the outer surface of an old insulation board 10, and simultaneously determining the position of an anchor bolt;
step two: drilling holes from the outer surface of the new insulation board 8 and vertically towards the base layer wall 9 by using an electric drill at the determined anchor bolt position until the drilling depth of the base layer wall 9 reaches the minimum anchoring depth of the broken heat bridge anchor bolt; in the embodiment, the diameter of the drill bit of the electric drill is 1mm larger than that of the internal thread expansion sleeve 2;
step three: the expansion section 22 of the internal thread expansion sleeve 2 provided with the frustum-shaped core nail 3 is sent into the drill hole inwards;
step four: firstly, when the frustum type core nail 3 is of a built-in structure, preparing a lengthened ejector rod with the diameter smaller than the inner diameter of the threaded section 21 of the internal thread expansion sleeve 2, firstly, penetrating the lengthened ejector rod into the threaded section 21 of the internal thread expansion sleeve 2 through a drill hole and abutting against the cylindrical section 31 of the frustum type core nail 3, pushing the expansion section 22 of the internal thread expansion sleeve 2 towards the bottom of the drill hole through the lengthened ejector rod until the expansion section 22 of the internal thread expansion sleeve 2 abuts against the bottom of the drill hole, then hammering the lengthened ejector rod outside the drill hole until the frustum type core nail 3 is hammered to the bottom of the drill hole, and under the extrusion and expansion action of the frustum type core nail 3, expanding the expansion section 22 of the internal thread expansion sleeve 2 outwards and forming anchoring connection with the base layer wall body 9; secondly, when the frustum-shaped core nail 3 is of an external structure, preparing a lengthened ejector rod with the diameter smaller than the bore diameter of the drill hole and larger than the inner diameter of the thread section 21 of the internal thread expansion sleeve 2, firstly sending the lengthened ejector rod into the drill hole and abutting against the thread section 21 of the internal thread expansion sleeve 2, pushing the expansion section 22 of the internal thread expansion sleeve 2 towards the bottom of the drill hole through the lengthened ejector rod until the frustum-shaped core nail 3 abuts against the bottom of the drill hole, then hammering the lengthened ejector rod outside the drill hole, and expanding the expansion section 22 of the internal thread expansion sleeve 2 outwards under the extrusion expansion action of the frustum-shaped core nail 3 until the frustum-shaped core nail 3 forms anchoring connection with the base layer wall body 9;
step five: the lengthened ejector rod is pulled out of the drill hole, then the screw 12 of the heat-insulation bridge bolt 1 is inserted into the drill hole, the heat-insulation bridge bolt 1 is screwed, so that the screw 12 is screwed with the thread section 21 of the internal thread expansion sleeve 2 until the anchoring disc 11 of the heat-insulation bridge bolt 1 is tightly attached to the outer surface of the new heat-insulation board 8, and the specific installation effect is shown in fig. 9 and 10.
In this embodiment, before inserting the screw 12 of the broken heat bridge bolt 1 into the drill hole, a layer of alkali-resistant glass fiber mesh cloth or steel wire mesh can be pasted and smeared on the outer surface of the new heat insulation board 8, so as to enhance the anchoring strength of the new heat insulation board 8. In addition, a pressure expanding disc can be further nested inside the anchoring disc 11 of the heat-insulation bridge bolt 1 to increase the stress area of the anchoring disc 11.
As shown in fig. 11 to 14, a core-beating heat-insulation bridge anchor bolt for a building heat-insulation system comprises a heat-insulation bridge bolt 1, an internal thread screwed pipe 4, an external thread expansion sleeve 5 and a core nail; in this embodiment, the core pin is specifically a needle core pin 6; the heat-insulation bridge bolt 1 consists of an anchoring disc 11 and a screw 12, wherein the anchoring disc 11 is coaxially and fixedly arranged at one end of the screw 12, and the outer surface of the screw 12 is provided with an external thread; the inner surface of the internal thread screw pipe 4 is provided with internal threads; the external thread expansion casing 5 is divided into a thread section 21 and an expansion section 22, an external thread is arranged on the outer surface of the thread section 21, a cross-shaped fracture is arranged on a pipe body of the external thread expansion casing 5 of the expansion section 22, and friction grains are arranged on the outer surface of the pipe body of the external thread expansion casing 5 of the expansion section 22; the screw 12 of the heat-insulation bridge bolt 1 is in threaded connection and fastening fit with the internal thread screwed pipe 4, and the thread section 21 of the external thread expansion sleeve 5 is in threaded connection and fastening fit with the internal thread screwed pipe 4; the needle type core pin 6 is matched with the expansion section 22 of the external thread expansion sleeve 5 in an extruding and expanding way.
The needle type core nail 6 is divided into a needle handle section 61 and a needle tip section 62; the inner surface of the expansion section 22 of the external thread expansion sleeve 5 adopts a cylindrical hole structure, the joint of the cylindrical hole of the expansion section 22 and the inner surface of the thread section 21 is in a necking conical surface structure, the needle handle section 61 of the needle type core nail 6 is positioned inside the thread section 21 of the external thread expansion sleeve 5, and the needle tip section 62 of the needle type core nail 6 is positioned at the joint of the cylindrical hole of the expansion section 22 and the inner surface of the thread section 21.
The heat-insulation bridge bolt 1 is made of plastic, and reinforcing fibers are mixed in the plastic or fiber composite material ribs are embedded in the plastic.
The inner thread screwed pipe 4, the external thread expansion sleeve 5 and the needle type core nail 6 are made of metal.
The installation method of the core-hitting heat-breaking bridge anchor bolt for the building heat insulation system comprises the following steps:
the method comprises the following steps: adopting an adhesive 7 to stick a new insulation board 8 on the outer surface of a base layer wall 9 or on the outer surface of an old insulation board 10, and simultaneously determining the position of an anchor bolt;
step two: drilling holes from the new insulation board 8 to the base layer wall 9 vertically by using an electric drill at the determined anchor bolt position until the drilling depth of the base layer wall 9 reaches the minimum anchoring depth of the broken heat bridge anchor bolt; in the embodiment, the diameter of the drill bit of the electric drill is 1mm larger than that of the inner thread screw pipe 4;
step three: the internal thread screwed pipe 4 and the external thread expansion sleeve 5 are screwed together, and then the expansion section 22 of the external thread expansion sleeve 5 which is screwed with the internal thread screwed pipe 4 and is provided with the needle type core nail 6 is sent into a drill hole inwards;
step four: preparing a lengthened ejector rod with the diameter smaller than the inner diameter of the inner threaded pipe 4, penetrating the lengthened ejector rod into the inner threaded pipe 4 through a drill hole and abutting against the needle handle section 61 of the needle type core nail 6, pushing the expansion section 22 of the external thread expansion sleeve 5 towards the bottom of the drill hole through the lengthened ejector rod until the expansion section 22 of the external thread expansion sleeve 5 abuts against the bottom of the drill hole, hammering the lengthened ejector rod outside the drill hole until the needle type core nail 6 is hammered to the bottom of the drill hole, and expanding the expansion section 22 of the external thread expansion sleeve 5 outwards under the extrusion expansion action of the needle type core nail 6 to form anchoring connection with the base layer wall body 9;
step five: the lengthened ejector rod is pulled out of the drilled hole, then the screw 12 of the heat-insulation bridge bolt 1 is inserted into the drilled hole, the heat-insulation bridge bolt 1 is screwed, so that the screw 12 and the inner thread screw pipe 4 are screwed together until the anchoring disc 11 of the heat-insulation bridge bolt 1 is tightly attached to the outer surface of the new heat-insulation board 8, and the specific installation effect is shown in fig. 15 and 16.
In this embodiment, before inserting the screw 12 of the broken heat bridge bolt 1 into the drill hole, a layer of alkali-resistant glass fiber mesh cloth or steel wire mesh can be pasted and smeared on the outer surface of the new heat insulation board 8, so as to enhance the anchoring strength of the new heat insulation board 8. In addition, a pressure expanding disc can be further nested inside the anchoring disc 11 of the heat-insulation bridge bolt 1 to increase the stress area of the anchoring disc 11.
The embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications without departing from the scope of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. The utility model provides a building heat preservation system is with hitting core disconnected hot bridge crab-bolt which characterized in that: comprises a heat-insulating bridge bolt, an internal thread expansion sleeve and a core nail; the heat-insulating bridge bolt consists of an anchoring disc and a screw rod, the anchoring disc is coaxially and fixedly arranged at one end of the screw rod, and the outer surface of the screw rod is provided with an external thread; the internal thread expansion sleeve is divided into a thread section and an expansion section, internal threads are arranged on the inner surface of the internal thread expansion sleeve of the thread section, a cross-shaped fracture is arranged on the pipe body of the internal thread expansion sleeve of the expansion section, and friction grains are arranged on the outer surface of the pipe body of the internal thread expansion sleeve of the expansion section; the screw of the heat-insulation bridge bolt is in threaded connection and fastening fit with the thread section of the internal thread expansion sleeve; the core nail is matched with the internal thread expansion sleeve in an extruding and expanding mode.
2. The core-beating heat-insulation bridge anchor bolt for the building heat-insulation system according to claim 1, wherein: an inner thread screwed pipe and an outer thread screwed pipe for adjusting the stroke of the heat-insulated bridge bolt are arranged between the screw rod of the heat-insulated bridge bolt and the thread section of the internal thread expansion sleeve; the inner surface of the inner thread screw pipe is provided with an internal thread, and the outer surface of the outer thread screw pipe is provided with an external thread; the screw of the heat-insulating bridge bolt is in threaded connection and fastening fit with one end of the inner threaded pipe, the other end of the inner threaded pipe is in threaded connection and fastening fit with one end of the outer threaded pipe, and the other end of the outer threaded pipe is in threaded connection and fastening fit with the thread section of the inner thread expansion sleeve.
3. The core-beating heat-insulation bridge anchor bolt for the building heat-insulation system according to claim 1, wherein: the core nail comprises two structural forms, namely an internal structure and an external structure; when the core nail is of a built-in structure, the core nail is divided into a cylindrical section and a necking conical section, the inner surface of the expansion section of the internal thread expansion sleeve is of a necking conical surface structure, the cylindrical section of the core nail is positioned in the thread section of the internal thread expansion sleeve, and the necking conical section of the core nail is positioned in the expansion section of the internal thread expansion sleeve; when the core nail is of an external structure, the core nail is divided into a cylindrical section and a flaring conical section, the inner surface of the expansion section of the internal thread expansion sleeve is of an isometric cylindrical surface structure, the cylindrical section of the core nail is positioned inside the expansion section of the internal thread expansion sleeve, and the flaring conical section of the core nail is positioned outside the expansion section of the internal thread expansion sleeve.
4. The core-beating heat-insulation bridge anchor bolt for the building heat-insulation system according to claim 1, wherein: the internal thread expansion sleeve and the frustum type core nail are made of metal.
5. The method for installing a core-beating heat-breaking bridge anchor bolt for a building insulation system according to claim 1, characterized by comprising the steps of:
the method comprises the following steps: sticking the new insulation board on the outer surface of the base layer wall body or the outer surface of the original insulation system by adopting an adhesive, and simultaneously determining the position of an anchor bolt;
step two: drilling a hole from the outer surface of the new insulation board to the base layer wall by using an electric drill at the determined anchor bolt position until the drilling depth of the base layer wall reaches the minimum anchoring depth of the broken heat bridge anchor bolt;
step three: sending the expansion section of the internal thread expansion sleeve provided with the core nail into the drill hole inwards;
step four: firstly, when the core nail is of a built-in structure, preparing a lengthened ejector rod with the diameter smaller than the inner diameter of the threaded section of the internal thread expansion sleeve, firstly, penetrating the lengthened ejector rod into the threaded section of the internal thread expansion sleeve through a drill hole and abutting against the cylindrical section of the core nail, pushing the expansion section of the internal thread expansion sleeve towards the bottom of the drill hole through the lengthened ejector rod until the expansion section of the internal thread expansion sleeve abuts against the bottom of the drill hole, then hammering the lengthened ejector rod outside the drill hole until the core nail is hammered to the bottom of the drill hole, and enabling the expansion section of the internal thread expansion sleeve to expand outwards and form anchoring connection with a base wall under the extrusion and expansion action of the core nail; secondly, when the core nail is of an external structure, preparing a lengthened ejector rod with the diameter smaller than the bore diameter of the drill hole and larger than the inner diameter of the thread section of the internal thread expansion sleeve, firstly sending the lengthened ejector rod into the drill hole and abutting against the thread section of the internal thread expansion sleeve, pushing the expansion section of the internal thread expansion sleeve towards the bottom of the drill hole through the lengthened ejector rod until the core nail abuts against the bottom of the drill hole, then hammering the lengthened ejector rod outside the drill hole, and expanding the expansion section of the internal thread expansion sleeve outwards under the extrusion and expansion effects of the core nail until the expansion section of the internal thread expansion sleeve forms anchoring connection with the base wall;
step five: and (3) extracting the lengthened ejector rod from the drilled hole, inserting a screw rod of the heat-breaking bridge bolt into the drilled hole, and screwing the heat-breaking bridge bolt to enable the screw rod to be in threaded connection with the thread section of the internal thread expansion sleeve until an anchoring disc of the heat-breaking bridge bolt is tightly attached to the outer surface of the new heat insulation board.
6. The utility model provides a building heat preservation system is with hitting core disconnected hot bridge crab-bolt which characterized in that: comprises a heat-insulating bridge bolt, an internal thread screwed pipe, an external thread expansion sleeve and a core nail; the heat-insulating bridge bolt consists of an anchoring disc and a screw rod, the anchoring disc is coaxially and fixedly arranged at one end of the screw rod, and the outer surface of the screw rod is provided with an external thread; the inner surface of the internal thread screw pipe is provided with internal threads; the external thread expansion sleeve is divided into a thread section and an expansion section, an external thread is arranged on the outer surface of the thread section, a cross-shaped fracture is arranged on the external thread expansion sleeve body of the expansion section, and friction grains are arranged on the outer surface of the external thread expansion sleeve body of the expansion section; the screw of the heat-insulation bridge bolt is in threaded connection and fastening fit with the internal thread screwed pipe, and the thread section of the external thread expansion sleeve is in threaded connection and fastening fit with the internal thread screwed pipe; the core nail is matched with the expansion section of the external thread expansion sleeve in an extruding and expanding manner.
7. The core-beating heat-insulation bridge anchor bolt for the building heat-insulation system according to claim 6, wherein: the core nail is divided into a nail body section and a nail tip section; the expansion section inner surface of the external thread expansion sleeve adopts a cylindrical hole structure, the joint of the expansion section cylindrical hole and the thread section inner surface is a necking conical surface structure, the nail body section of the core nail is positioned inside the thread section of the external thread expansion sleeve, and the nail tip section of the core nail is positioned at the joint of the expansion section cylindrical hole and the thread section inner surface.
8. The core beating heat insulation bridge anchor bolt for the building heat insulation system according to the claims 1 and 6, which is characterized in that: the heat-insulation bridge bolt is made of plastics, and reinforcing fibers are mixed in the plastics or fiber composite material ribs are embedded in the plastics.
9. The core-beating heat-insulation bridge anchor bolt for the building heat-insulation system according to claim 6, wherein: the inner thread screwed pipe, the external thread expansion sleeve and the core nail are made of metal.
10. The method for installing a core-beating heat-breaking bridge anchor bolt for a building insulation system according to claim 6, characterized by comprising the steps of:
the method comprises the following steps: sticking the new insulation board on the outer surface of the base layer wall body or the outer surface of the original insulation system by adopting an adhesive, and simultaneously determining the position of an anchor bolt;
step two: drilling a hole from the new insulation board to the base layer wall vertically by using an electric drill at the determined anchor bolt position until the drilling depth of the base layer wall reaches the minimum anchoring depth of the broken heat bridge anchor bolt;
step three: the internal thread screwed pipe and the external thread expansion sleeve are screwed together, and then the external thread expansion sleeve expansion section screwed with the internal thread screwed pipe and provided with the core nail is conveyed inwards into the drill hole;
step four: preparing a lengthened ejector rod with the diameter smaller than the inner diameter of the inner threaded pipe, penetrating the lengthened ejector rod into the inner threaded pipe through a drill hole and abutting against the shank section of the core nail needle, pushing the expansion section of the external thread expansion sleeve towards the bottom of the drill hole through the lengthened ejector rod until the expansion section of the external thread expansion sleeve abuts against the bottom of the drill hole, hammering the lengthened ejector rod outside the drill hole until the core nail is hammered to the bottom of the drill hole, and expanding the expansion section of the external thread expansion sleeve outwards under the extrusion expansion effect of the core nail and forming anchoring connection with the base wall;
step five: and (3) drawing the lengthened ejector rod out of the drilled hole, inserting a screw rod of the thermal bridge cutoff bolt into the drilled hole, and screwing the thermal bridge cutoff bolt to enable the screw rod to be in threaded connection with the inner thread screw pipe until an anchoring disc of the thermal bridge cutoff bolt is tightly attached to the outer surface of the new insulation board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110879079.XA CN113585500A (en) | 2021-08-02 | 2021-08-02 | Core-hitting heat-breaking bridge anchor bolt for building heat insulation system and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110879079.XA CN113585500A (en) | 2021-08-02 | 2021-08-02 | Core-hitting heat-breaking bridge anchor bolt for building heat insulation system and mounting method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113585500A true CN113585500A (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110879079.XA Pending CN113585500A (en) | 2021-08-02 | 2021-08-02 | Core-hitting heat-breaking bridge anchor bolt for building heat insulation system and mounting method thereof |
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| CN (1) | CN113585500A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086677A (en) * | 2021-11-29 | 2022-02-25 | 北京奥克森节能环保科技有限公司 | Heat-preservation construction process |
-
2021
- 2021-08-02 CN CN202110879079.XA patent/CN113585500A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086677A (en) * | 2021-11-29 | 2022-02-25 | 北京奥克森节能环保科技有限公司 | Heat-preservation construction process |
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