Ultralow-energy-consumption FRP heat preservation nail and composite external heat preservation building external wall

Abstract

The utility model relates to an ultra-low energy consumption FRP (Fiber Reinforced Plastic) heat preservation nail which comprises a nail sleeve piece and a nail rod body, the nail sleeve piece is formed at one end of the nail rod body in an injection molding manner, the nail sleeve piece wraps the end part of the nail rod body, the exposed part of the nail rod body is provided with one or more anchoring notches, and the anchoring notches are connected with concrete in an anchoring manner. And the steel bar is bound and connected with a reinforcement cage in the concrete wall body. According to the FRP heat preservation nail, the anchoring strength of the nail rod body and concrete is improved through the anchoring notch, iron wires can be wound around the anchoring notch so that the nail rod body and a reinforcement cage can be bound together, and the connection firmness of the FRP heat preservation nail and a wall body is extremely high; therefore, the FRP heat preservation nails can firmly fix the heat preservation plate on the composite external heat preservation building external wall for a long time, and the heat preservation layer is prevented from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of building exterior wall insulation, in particular to an ultra-low energy consumption FRP insulation nail and a composite exterior insulation building exterior wall. Background Art

[0002] Traditional exterior wall insulation technologies include internal and external insulation, both of which face their own problems. Internal insulation of exterior walls has a high thermal conductivity and a cold-heat bridge problem. It is difficult to meet energy-saving requirements with internal insulation of exterior walls, and has been gradually eliminated. External insulation of exterior walls uses polystyrene thin plastering external insulation technology, which has a thick insulation layer. Although the energy-saving effect is good, it is more difficult to attach the insulation material to the exterior wall, and there is a risk of falling from a high altitude.

[0003] Chinese patent publication number CN112049277A discloses an FRP connector for a composite thermal insulation integrated panel, wherein an anchoring groove is formed on the rod body of the FRP anchor rod to increase the anchoring force in wall materials such as concrete, so as to solve the problem of thermal insulation material falling off, wherein the anchoring groove is a spiral groove formed by winding before the FRP anchor rod is thermally cured, or a reverse tooth groove is secondary molded by machining after thermally cured.

[0004] The tensile strength and bending strength of the rod body of the spiral groove structure are poor; while the inverted tooth groove structure is better at compressive resistance than tensile resistance. During the tensile process, the inverted tooth inclined surface is completely unstressed, which makes the inverted tooth prone to splitting. Therefore, the inverted tooth groove structure cannot withstand a large tensile strength. Therefore, after long-term use, the above FRP anchor rod cannot solve the problem of thermal insulation material falling off.

[0005] Therefore, how to effectively ensure the safety and durability of exterior wall insulation has become a new issue that needs to be urgently addressed in the construction industry. Utility Model Content

[0006] In order to solve the problem that the existing FRP anchor rods cannot ensure that the insulation layer of the building exterior wall does not fall off for a long time, the utility model provides an ultra-low energy consumption FRP insulation nail and a composite external insulation building exterior wall.

[0007] The technical solution of the utility model is as follows:

[0008] An ultra-low energy consumption FRP insulation nail comprises a nail kit and a nail rod body, characterized in that the nail kit is injection molded at one end of the nail rod body, and the nail kit covers the end of the nail rod body, and the exposed portion of the nail rod body is provided with one or more anchoring notches, and the anchoring notches are anchored to the concrete and tied to the steel cage in the concrete wall.

[0009] Preferably, the material of the nail rod body is glass fiber reinforced plastic with fibers distributed along the axial direction of the rod body, and the material of the nail kit is thermoplastic material.

[0010] Preferably, the fiber content of the nail rod body is greater than or equal to 80%, the tensile strength thereof is greater than or equal to 700 MPa, and the material bending strength is greater than or equal to 700 MPa.

[0011] The utility model according to the above scheme is characterized in that the anchoring notch is a flat-bottomed notch, and the two side walls of the flat-bottomed notch are perpendicular to the rod body, so that a rectangular tooth is formed between two adjacent flat-bottomed notches.

[0012] The utility model according to the above scheme is characterized in that the anchoring notch is a sloped notch, the lower end of the slope bottom of the sloped notch is located on one side of the nail cover, and the low slope side wall of the sloped notch is perpendicular to the slope surface.

[0013] The utility model according to the above scheme is characterized in that at least one anti-slip groove is provided at one end of the nail rod body connected to the nail kit, and the anti-slip groove is used to reinforce the nail kit and the nail rod body.

[0014] Furthermore, after the nail rod body and the nail kit are molded and combined, the anti-slip groove of the nail rod body is located in the middle position of the sleeve rod of the nail kit.

[0015] The utility model according to the above scheme is characterized in that grinding planes are symmetrically provided on both sides of the head end of the nail rod body, and the two grinding planes have a certain angle; and the end of the nail rod body is also provided with a flat end surface.

[0016] The utility model according to the above scheme is characterized in that one of the two opposite sides of the nail rod body is a wide side, and the other two opposite sides are narrow sides, and the wide side is provided with two intersecting inclined surfaces, so that the cross-section of the nail rod body is approximately rectangular.

[0017] The utility model according to the above scheme is characterized in that the cross section of the nail rod body can also be a cross, square, circle, star, irregular polygon, etc.

[0018] The utility model according to the above scheme is characterized in that the nail kit includes a nail cover and a sleeve rod, the sleeve rod covers one end of the nail rod body, and the end of the nail rod body extends to the nail cover.

[0019] Furthermore, the nail cover is provided with a plurality of process holes for enhancing the structural stability of the nail cover.

[0020] Furthermore, the nail cover is provided with four process holes, and the process holes are fan-shaped holes, so that the nail cover is a round cover with a cross structure inside.

[0021] Furthermore, transitional curved surfaces are provided around the outer side surface of the nail cover.

[0022] Furthermore, the length of the sleeve rod is equal to the thickness of the insulation board of the building exterior wall.

[0023] The utility model according to the above solution is characterized in that a plurality of anti-falling teeth are symmetrically provided on one of the two opposite sides of the sleeve rod.

[0024] The utility model also provides a composite external insulation building exterior wall, including an insulation board and a concrete wall, wherein a steel cage is arranged in the concrete wall, and is characterized in that it also includes the ultra-low energy consumption FRP insulation nail as described in the above scheme, wherein the FRP insulation nail includes a nail kit and a nail rod body, wherein the nail cover of the nail kit is tightly attached to the surface of the insulation board, the sleeve rod of the nail kit passes through the insulation board, the nail rod body is inserted into the concrete wall, and the anchoring notch of the nail rod body is tied and fixed to the adjacent steel bar.

[0025] The utility model according to the above scheme is characterized in that the composite external insulation building exterior wall is a cast-in-place external insulation exterior wall, which includes a detachable inner formwork, a detachable tension screw, and a tension screw sleeve. The insulation board and the inner formwork are respectively located on the inner and outer sides of the concrete wall, and the tension screw is used to tie the inner formwork and the insulation board on both sides of the concrete wall.

[0026] Furthermore, the tension screw passes through the insulation board, the tension screw sleeve, the concrete wall and the inner formwork, and adjustable back ribs are respectively provided at both ends of the tension screw, and the two back ribs respectively abut against the insulation board and the inner formwork.

[0027] Furthermore, nuts and washers are provided at both ends of the tension screw rod, the washers are located between the nuts and the back ribs, and the nuts are used to adjust the position of the back ribs on the tension screw rod.

[0028] The utility model according to the above scheme is characterized in that the composite external insulation building exterior wall is a prefabricated external insulation exterior wall, and the prefabricated external insulation exterior wall also includes a detachable bottom template and a detachable side template, the bottom template is used to place the insulation board, and the side template is detachably arranged on at least three adjacent sides of the prefabricated external insulation exterior wall for enclosing a concrete pouring area.

[0029] The utility model according to the above scheme has the following beneficial effects:

[0030] The anchoring notch of the FRP thermal insulation nail of the utility model not only increases the anchoring strength between the nail rod body and the concrete, but also the anchoring notch can be wrapped with iron wire to bind the nail rod body and the steel cage together. The connection firmness between the FRP thermal insulation nail and the wall is extremely high, so that the FRP thermal insulation nail can firmly fix the insulation board on the outer wall of the composite external insulation building for a long time to prevent the insulation layer from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of the FRP insulation nail in the utility model;

[0032] Figure 2 This is a structural diagram of FRP insulation nails from another perspective;

[0033] Figure 3 This is the structural exploded diagram of the FRP insulation nail;

[0034] Figure 4 It is a schematic cross-sectional view of the nail rod body of the FRP insulation nail;

[0035] Figure 5 A schematic cross-sectional view of a nail rod body in another optional embodiment;

[0036] Figure 6 This is a schematic structural diagram of an FRP thermal insulation nail according to an optional embodiment;

[0037] Figure 7 This is a structural exploded view of an FRP thermal insulation nail of an optional embodiment;

[0038] Figure 8 It is a structural schematic diagram of the FRP insulation nails in the present invention applied to cast-in-place external insulation exterior walls;

[0039] Fig. 9 for Figure 8 A partial enlarged view of the

[0040] Fig.10 It is a structural schematic diagram of the FRP insulation nails in the present invention applied to the prefabricated external insulation exterior wall;

[0041] Fig.11 for Fig.10 A partial enlarged view of the .

[0042] In the figure,

[0043] 1. FRP insulation nails;

[0044] 11. Nail kit;

[0045] 111. Nail cover; 112. Sleeve rod; 113. Process hole; 114. Reinforcement rib structure; 115. Anti-falling teeth;

[0046] 116. Strip process groove; 117. Transition arc surface;

[0047] 12. Nail rod body;

[0048] 121, anchoring notch; 122, rectangular teeth; 123, low slope side wall; 124, grinding plane;

[0049] 125, flat end surface; 126, anti-slip notch; 127, bevel surface; 128, round chamfer;

[0050] 2. Insulation board;

[0051] 3. Concrete wall; 31. Longitudinal reinforcement; 32. Horizontal reinforcement;

[0052] 4. Internal template;

[0053] 5. Tensile screw rod; 51. Back rib; 52. Nut; 53. Tensile screw rod sleeve;

[0054] 6. Bottom template;

[0055] 7. Edge template;

[0056] 8. Pre-buried pipes for tensioning screws;

[0057] 9. Grouting sleeve. DETAILED DESCRIPTION

[0058] In order to better understand the purpose, technical solution and technical effect of the utility model, the utility model is further explained in conjunction with the drawings and embodiments below. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, it is stated that the embodiments described below are only used to explain the utility model and are not used to limit the utility model.

[0059] It should be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may also be a central element, and when an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time.

[0060] The indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when used, or the orientation or position relationship commonly understood by technical personnel in this field, or the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0061] Embodiment 1

[0062] like Figures 1 to 3 As shown, an FRP insulation nail suitable for composite external insulation of building exterior walls, the FRP insulation nail 1 includes a nail kit 11 and a nail rod body 12, the material of the nail rod body 12 is glass fiber reinforced plastic (FiberReinforced Polymer, FRP) with fibers distributed along the axial direction of the rod body, the material of the nail kit 11 is thermoplastic material, and the nail kit 11 is injection molded at one end of the nail rod body 12, after the two are formed, the nail kit 11 covers the end of the nail rod body 12, and the part of the nail rod body 12 exposed from the nail kit 11 is provided with one or more anchoring notches 121, when the FRP insulation nail 1 is inserted into the wall, the anchoring notch 121 is used to accommodate the concrete of the wall to enhance the anchoring force, and the anchoring notch 121 is also used to intersect with the steel cage of the wall and wrap the wire to tie the steel cage.

[0063] When the FRP insulation nail 1 is used in the composite external insulation structure of the building exterior wall, the anchoring notch 121 not only increases the anchoring strength between the nail rod body 12 and the concrete, but also the anchoring notch 121 can be wrapped with iron wire to tie the nail rod body 12 and the steel cage together, further increasing the connection firmness between the FRP insulation nail 1 and the wall, so that the FRP insulation nail 1 can firmly fix the insulation board 2 on the building wall, connect the insulation material (i.e., the insulation board 2) and the building exterior wall into one, and prevent the insulation material from falling off. In addition, the insulation nail FRP is made of high thermal resistance, high strength, low thermal conductivity, and low-cost FRP material rod, and the extremely low thermal conductivity of the FRP rod is used to reduce the cold and hot bridge, so that the insulation nail has higher tensile strength and thermal resistance, and further reduces the energy loss of the insulation wallboard.

[0064] The thermoplastic material may be PP (Polypropylene), ABS (Acrylonitrile Butadiene Styrene), PA PA66 (Polyamide 66), or the like.

[0065] like Figure 1 As shown, in this embodiment, the anchoring notch 121 is a flat-bottomed notch, and the two side walls of the flat-bottomed notch are perpendicular to the rod body, so that a rectangular tooth 122 is formed between two adjacent flat-bottomed notches. Not only can the flat-bottomed notch improve the anchoring force of the nail rod body 12 in the concrete, but the rectangular tooth 122 has a high structural strength and is not easy to split during the pull-out process. If the anchoring notch 121 adopts a barb design, the barb is easy to split during the pull-out process due to the poor barb structure, causing the insulation nail to lose the anchoring notch 121.

[0066] like Figure 6 and Figure 7 As shown, in an optional embodiment, the anchoring notch 121 is a sloped notch, the lower end of the slope bottom of the sloped notch is located on the side of the nail cover 111, and the low slope sidewall 123 of the sloped notch is perpendicular to the slope surface. Not only can the sloped notch improve the anchoring force of the nail rod body 12 in the concrete, but also the low slope side is on the side of the nail cover 111, and the high slope side is on the side of the nail head, so that the direction from the small end to the large end of the nail rod body 12 is consistent with the pull-out direction, and the large end has a pull-out effect; and during the pull-out process, the slope structure will not split, ensuring the service life of the anchoring notch 121, so the nail rod body 12 with a sloped notch structure is more suitable for pull-out resistance.

[0067] In this embodiment, the nail kit 11 includes a nail cover 111 and a sleeve rod 112, and the end of the nail rod body 12 in the sleeve rod 112 extends to the nail cover 111, that is, the entire sleeve rod 112 is covered outside the nail rod body 12, and there is a long overlap area between the nail kit 11 and the nail rod body 12, which improves the connection strength between the nail kit 11 and the nail rod body 12 after the injection molding process. In order to further ensure that the two are firmly combined, at least one anti-slip groove 126 is provided at one end of the nail rod body 12 connected to the nail kit 11. When the nail kit 11 is injection molded, the thermoplastic material can be embedded in the anti-slip groove 126 to further reinforce the nail kit 11 and the nail rod body 12.

[0068] like Figure 3 and Figure 7 As shown, in an optional embodiment, after the nail rod body 12 and the nail kit 11 are molded together, the anti-slip groove 126 of the nail rod body 12 is located in the middle of the sleeve rod 112, which is conducive to ensuring the stability of the sleeve rod 112 during injection molding.

[0069] The nail cover 111 is provided with four fan-shaped process holes 113, and the four process holes 113 are evenly distributed on the nail cover 111, so that the nail cover 111 is a round cover with a cross structure inside. The process holes 113 can prevent the nail cover 111 from shrinking and deforming during the injection molding process of the nail kit 11, thereby affecting the flatness of the nail cover 111. The round cover with a cross structure can save molding materials as much as possible while ensuring the structural stability of the nail cover 111.

[0070] In other optional embodiments, the number of the process holes 113 may be 2, 3, or more than four, and the shape of the process holes 113 may be, in addition to the fan shape, an elliptical shape, a teardrop shape, etc.

[0071] The outer side of the nail cover 111 is provided with a reinforcing rib structure 114, which includes a circular convex rib in the middle and strip convex ribs around. The reinforcing rib structure 114 can increase the structural strength of the nail cover 111, so that the nail cover 111 is not easily deformed or damaged during operation. Optionally, the outer side of the nail cover 111 is provided with a transition arc surface around the periphery, which makes the cover surface smoother. The smooth transition structure helps to reduce the stress concentration of the cover surface and improve the durability of the structure.

[0072] In this embodiment, a plurality of anti-falling teeth 115 are symmetrically provided on one of the two opposite sides of the sleeve rod 112. The anti-falling teeth 115 face the nail cover 111, that is, the connection end of the anti-falling teeth 115 is close to the nail rod body 12, and the tilted end is close to the nail cover 111. When the FRP insulation nail 1 passes through the insulation board 2, the direction of the anti-falling teeth 115 facilitates smooth insertion into the insulation board 2 and hinders its withdrawal from the insulation board 2, thereby preventing the FRP insulation nail 1 from being separated from the insulation board 2. Optionally, the length of the sleeve rod 112 is equal to the thickness of the insulation board 2. When the FRP insulation nail 1 is inserted into place, the sleeve rod 112 penetrates the insulation board 2 so that the nail rod body 12 is completely inserted into the concrete.

[0073] In addition to the anti-falling teeth 115, the sleeve rod 112 has two opposite sides provided with strip-shaped process grooves 116. For example, the left and right sides of the sleeve rod 112 are provided with anti-falling teeth 115, and the front and rear sides are provided with strip-shaped process grooves 116. The strip-shaped process groove 116 structure can reduce the material used for the sleeve rod 112 and improve the bending resistance of the sleeve rod 112.

[0074] like Figure 3 As shown, in this embodiment, grinding planes 124 are symmetrically provided on both sides of the head end of the nail rod body 12, and the two grinding planes 124 have a certain angle. The angle range is not strictly required, and it can form a pointed structure at the end of the nail rod body 12, which is generally 40 to 50 degrees. The end of the nail rod body 12 is also provided with a flat end surface 125, and the flat end surface 125 and the grinding planes 124 on both sides form a pointed head with multiple planes, specifically, a trapezoidal pointed head structure. The pointed head structure facilitates the insertion of the FRP insulation nail 1 into the insulation board 2, and the use of a flat end surface 125 on the pointed head can increase the safety of the product.

[0075] One of the two opposite sides of the nail rod body 12 is a wide side, and the other two opposite sides are narrow sides. The anchoring notch 121 is provided on the narrow side; the wide side is provided with two intersecting inclined surfaces 127, so that the cross section of the nail rod body 12 is approximately rectangular. Figure 4As shown. The cross section of the nail rod body 12 is approximately rectangular. The advantage is that under the condition that the remaining cross-sectional area of ​​the rod body is the same, the cutting loss is small, and the anchor shear resistance and anchor pull-out resistance of the rod body after cutting are better than other shapes. Optionally, the corners of the wide side and the narrow side of the nail rod body 12 are provided with rounded chamfers 128. The rounded chamfers 128 can reduce stress concentration at the corners and extend the service life of the material, because stress concentration is one of the main causes of material fatigue and fracture; the rounded chamfers 128 can also avoid sharp edges and increase the safety of product use.

[0076] like Figure 5 As shown, in other optional embodiments, the cross-section of the nail rod body 12 can be other regular or irregular polygons, such as a cross, square, circle, star, etc., in addition to being approximately rectangular.

[0077] In the present invention, the fiber content of the nail rod body 12 is greater than or equal to 80%, the tensile strength is greater than or equal to 700 MPa, and the material bending strength is greater than or equal to 700 MPa, which is much higher than that of rods made of stainless steel and other materials (see the table below).

[0078]

[0079] In addition, since the thermal conductivity of stainless steel is generally 12-25W / m·K, carbon steel and alloy steel are 30-60W / m·K, and FRP is only about 0.7W / m·K, it can be seen that the thermal conductivity of metal materials is dozens of times higher than that of FRP materials. Insulation nails use high-strength (low thermal conductivity) FRP rods to replace stainless steel or alloy steel materials, making the insulation nails have higher tensile strength and thermal resistance, further reducing the energy loss of insulation wall panels.

[0080] Embodiment 2

[0081] A method for manufacturing an FRP thermal insulation nail is used to manufacture the FRP thermal insulation nail suitable for composite external thermal insulation of building exterior walls as described in the first embodiment. The manufacturing method is divided into two steps: firstly, producing a nail rod body 12, and then injection molding a nail kit 11.

[0082] The production steps of the nail rod body 12 include:

[0083] Step A, selecting glass fiber reinforced plastic with a fiber content of not less than 80%, and drawing it into bundles;

[0084] Glass fiber, basalt fiber, carbon fiber, organic aramid fiber and other materials are used, with the fiber content not less than 80%. The high-strength fiber material is installed on the creel, drawn into bundles and passed through guide rollers, dip tanks, pressure rollers, squeeze rubber rollers, preforming molds, thermosetting molds and connected to the traction device;

[0085] Step B, impregnating resin;

[0086] The fiber is impregnated with unsaturated polyester resin, vinyl resin or epoxy resin in the impregnation tank. It is necessary to ensure that the fiber is fully impregnated with the resin material before entering the molding mold. The impregnation effect can be adjusted by the length of the impregnation tank and the pulling speed.

[0087] Step C, pultrusion molding and making the fibers evenly distributed along the rod axis direction of the nail rod mold;

[0088] Through the extrusion rubber roller and the preforming mold, the excess resin glue is removed and the bubbles are squeezed out, and the impregnated yarn bundle is gradually formed into a shape similar to the inlet of the thermosetting molding mold; the fiber and resin raw materials are evenly distributed through pultrusion, and the fiber is distributed along the rod axis direction of the nail rod mold;

[0089] Step D, heating and curing in the mold;

[0090] The external heating device of the thermosetting forming mold heats the thermosetting area of ​​the mold to a set temperature, so that the resin glue in the impregnated yarn bundle passing through is thermoset and formed. The mold length is related to the resin curing time and the pulling speed. The rear end of the thermosetting forming mold is provided with a water cooling system, so that the rear end of the thermosetting forming mold forms a low-temperature cooling area to accelerate the cooling of the formed rod material.

[0091] Step E: cutting and blanking of rod materials;

[0092] The solidified FRP rods are cut to the designed size.

[0093] Step F, grinding the rod material to form the anchoring notch 121 and the nail tip;

[0094] Customized special grinding equipment according to design dimensions, clamping and grinding in one go to improve production efficiency;

[0095] Step G, removing burrs and dust;

[0096] Clean the FRP rod after grinding to remove burrs and dust.

[0097] The injection molding step of the nail kit 11 includes:

[0098] Step H, placing the nail rod body 12 made in the previous step into the injection mold;

[0099] When the rod is placed in the mold, it is positioned with the pointed end to ensure the finished product size, and the end surface of the covered part of the rod is substantially flush with the inner side surface of the nail cover 111;

[0100] Step I: Injection molding, check and clean the batch front.

[0101] Embodiment 3

[0102] like Figure 8 and Fig. 9As shown, a composite external insulation building exterior wall is a cast-in-place external insulation exterior wall, including an insulation board 2, a concrete wall 3, an FRP insulation nail 1, a detachable inner formwork 4, a detachable tension screw 5 and a tension screw sleeve 53. A steel cage is provided in the concrete wall 3. The insulation board 2 and the inner formwork 4 are respectively located on the inner and outer sides of the concrete wall 3. The tension screw 5 is used to tie the inner formwork 4 and the insulation board 2 on both sides of the concrete wall 3. Specifically, the tension screw 5 passes through the insulation board 2, the tension screw sleeve 53, the concrete wall 3 and the inner formwork 4. Adjustable back ribs 51 are respectively provided at both ends of the tension screw 5, and the two back ribs 51 are respectively against the insulation board 2 and the inner formwork 4. Nuts 52 and washers are provided at both ends of the tensioning screw 5. The washers are located between the nuts 52 and the back ribs 51. The position of the back ribs 51 on the tensioning screw 5 is adjusted by adjusting the nuts 52, thereby achieving the inner formwork 4 and the insulation board 2 on both sides of the concrete wall 3 being tied together.

[0103] The insulation board 2 uses composite reinforced Class A non-combustible or Class B2 flame-retardant insulation materials to increase the fire resistance and safety of the building exterior wall. The FRP insulation nail 1 includes a nail kit 11 and a nail rod 12. The nail cover 111 of the nail kit 11 is close to the surface of the insulation board 2. The sleeve rod 112 of the nail kit 11 penetrates the insulation board 2. The anchoring notch 121 at the intersection of the nail rod 12 and the steel cage is tied and fixed with the adjacent steel bars. The nail rod 12 is inserted into the concrete wall 3. The FRP insulation nail 1 is used to firmly fix the insulation board 2 on the concrete wall 3 to prevent the insulation board 2 from detaching from the concrete wall 3.

[0104] It should be noted that the insulation board 2, concrete wall 3 and inner formwork 4 in the figure are drawn in perspective to observe their internal structures. In fact, only the nail cover 111, back rib 51 and the parts above the insulation board 2 can be seen, and the rest are hidden in the concrete wall 3.

[0105] Embodiment 4

[0106] like Fig.10 and Fig.11 As shown, a composite external insulation building exterior wall is a prefabricated external insulation exterior wall, including an insulation board 2, a concrete wall 3, an FRP insulation nail 1, a detachable bottom template 6 and a detachable side template 7. The bottom template 6 is used to place the insulation board 2, and the side template 7 is detachably arranged on at least two adjacent sides of the prefabricated external insulation exterior wall to enclose the concrete pouring area. The prefabricated external insulation exterior wall shown in the figure is located at a corner position and is provided with two side templates 7.

[0107] Among them, the FRP insulation nail 1 includes a nail kit 11 and a nail rod body 12. The nail cover 111 of the nail kit 11 is tightly attached to the surface of the insulation board 2. The sleeve rod 112 of the nail kit 11 penetrates the insulation board 2. The anchor groove 121 at the intersection of the nail rod body 12 and the steel cage is tied and fixed with the adjacent steel bars. The nail rod body 12 is inserted into the concrete wall 3. The FRP insulation nail 1 is used to firmly fix the insulation board 2 on the concrete wall 3 to prevent the insulation board 2 from detaching from the concrete wall 3.

[0108] It should be noted that the insulation board 2 and concrete wall 3 in the figure are drawn in perspective to observe their internal structure. In fact, only the part of the tension screw embedded pipe 8 extending out of the concrete wall 3 can be seen, and the rest such as the grouting sleeve 9, longitudinal reinforcement 31, transverse reinforcement 32, and insulation nail 1 are hidden in the concrete wall 3 or the insulation board 2.

[0109] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0110] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An ultra-low energy consumption FRP insulation nail, comprising a nail kit and a nail rod body, characterized in that: The nail kit is injection molded at one end of the nail rod body, and the nail kit covers the end of the nail rod body. The exposed portion of the nail rod body is provided with one or more anchoring notches, and the anchoring notches are anchored to the concrete and tied to the steel cage in the concrete wall.

2. The ultra-low energy consumption FRP insulation nail according to claim 1, characterized in that: The anchoring notch is a flat-bottomed notch, and the two side walls of the flat-bottomed notch are perpendicular to the rod body, so that a rectangular tooth is formed between two adjacent flat-bottomed notches.

3. The ultra-low energy consumption FRP insulation nail according to claim 1, characterized in that: The anchoring notch is a sloped notch, the lower end of the slope bottom of the sloped notch is located on one side of the nail cover, and the low slope side wall of the sloped notch is perpendicular to the slope surface.

4. The ultra-low energy consumption FRP insulation nail according to claim 1, characterized in that: Grinding planes are symmetrically arranged on both sides of the head end of the nail rod body, and the two grinding planes have a certain angle; and a flat end surface is also arranged at the end of the nail rod body.

5. The ultra-low energy consumption FRP insulation nail according to claim 1, characterized in that: One of the two opposite sides of the nail rod body is a wide side, and the other two opposite sides are a narrow side. The wide side is provided with two intersecting inclined surfaces, so that the cross section of the nail rod body is approximately rectangular.

6. The ultra-low energy consumption FRP insulation nail according to claim 1, characterized in that: The nail kit comprises a nail cover and a sleeve rod, wherein the sleeve rod covers one end of the nail rod body, and the end of the nail rod body extends to the nail cover.

7. The ultra-low energy consumption FRP insulation nail according to claim 6, characterized in that: One end of the nail rod body connected to the nail kit is provided with at least one anti-slip notch, and the anti-slip notch is used to reinforce the nail kit and the nail rod body.

8. A composite external insulation building exterior wall, comprising an insulation board and a concrete wall, wherein a steel cage is arranged in the concrete wall, characterized in that: It also includes the ultra-low energy consumption FRP insulation nail as described in any one of claims 1 to 7, the FRP insulation nail includes a nail kit and a nail rod body, the nail cover of the nail kit is tightly attached to the surface of the insulation board, the sleeve rod of the nail kit passes through the insulation board, the nail rod body is inserted into the concrete wall, and the anchoring groove of the nail rod body is tied and fixed to the adjacent steel bar.

9. The composite external thermal insulation building exterior wall according to claim 8, characterized in that: The composite external insulation building exterior wall is a cast-in-place external insulation exterior wall, which includes a detachable inner formwork, a detachable tension screw, and a tension screw sleeve. The insulation board and the inner formwork are respectively located on the inner and outer sides of the concrete wall. The tension screw is used to tie the inner formwork and the insulation board on both sides of the concrete wall.

10. The composite external thermal insulation building exterior wall according to claim 8, characterized in that: The composite external insulation building exterior wall is a prefabricated external insulation exterior wall, which also includes a detachable bottom formwork and a detachable side formwork. The bottom formwork is used to place the insulation board, and the side formwork is detachably arranged on at least three adjacent sides of the prefabricated external insulation exterior wall to enclose a concrete pouring area.

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