Multi-claw reverse retraction embedded part and multi-claw supporting heat preservation system composed of multi-claw reverse retraction embedded part

Abstract

The utility model discloses a multi-claw reverse retraction embedded part and a multi-claw supporting heat preservation system composed of the same. In the adhesive anchor installation mode, the positioning strength of all positions of the whole insulation board is not uniform and the insertion depth is not standard due to the fact that the insulation board is positioned in the direction and mode through an anchoring part, and the hidden danger of warping or damage of the insulation board is large. The expansion bolt, the outer pipe and the telescopic rod are sequentially and coaxially arranged, one end of the expansion bolt is connected with a wall body, the other end of the expansion bolt is detachably connected with the end, facing outdoors, of the outer pipe, and one end of the telescopic rod is arranged in the outer pipe in a penetrating mode. The telescopic rod comprises a main rod and a plurality of outward-extending claws, a cavity is machined in the main rod in the length direction of the main rod, the outward-extending claws are evenly distributed in the cavity in the circumferential direction of the main rod, the other end of the telescopic rod is a tip end, the tip end of the telescopic rod is arranged outside the outer pipe, the outward-extending claws are arranged close to the tip end of the telescopic rod, and each outward-extending claw is hinged to the inner wall of the cavity.

Description

Technical Field

[0001] This utility model specifically relates to a multi-claw reverse retraction embedded part and the multi-claw support insulation system composed of it, belonging to the field of building insulation technology. Background Technology

[0002] The main reasons for renovating old houses include improving living comfort, addressing aging issues, increasing property value, and optimizing layout. Old houses often suffer from problems such as cracked walls, aging plumbing and electrical systems, and ineffective waterproofing. Renovation can fundamentally solve these hidden dangers and ensure residential safety. In cold northern regions, the primary task of old house renovation is to increase the wind resistance and insulation performance of the walls. With the promotion and implementation of old house renovation, some older buildings in northern areas are already having external wall insulation panels installed. The specific method for laying the insulation panels on the external walls is as follows:

[0003] 1. Fully Adhesive Type: This method involves directly bonding the insulation board to the base wall using adhesive. Depending on the specific construction situation, spot bonding or full bonding can be used. This construction method is simple, relatively low-cost, and can create a relatively smooth wall surface. However, it may pose safety hazards under extreme weather conditions because it relies entirely on the adhesive for fixation. If the adhesive is of poor quality or the construction is improper, the boards may detach.

[0004] II. Dry-hanging type: Dry-hanging involves fixing a keel to the base wall and then connecting the insulation board to the keel using metal connectors or special anchors. While this method offers flexible construction and facilitates later maintenance and board replacement, and allows for sealing of board joints with other insulation materials to effectively improve insulation performance, its construction cost is relatively high, requiring additional keels and connectors. Furthermore, it demands a high degree of flatness from the base wall; uneven walls require additional treatment, making this method difficult to popularize.

[0005] Regarding the two treatment methods mentioned above, adhesive-anchored insulation combines the advantages of fully bonded and dry-hanging methods. It uses adhesive to attach the insulation board to the base wall and anchors for reinforcement. However, in actual construction, after the insulation system is put into use, several problems have been found, mainly:

[0006] 1. Adhesive-anchor bonding requires high-quality adhesive: Adhesive-anchor connections rely on the adhesive strength to secure the insulation board. Poor quality adhesive or improper application can lead to weak bonding between the insulation board and the wall. In extreme weather conditions, such as strong winds or high temperatures, the adhesive's performance may be affected, thus reducing the stability of the insulation board.

[0007] Anchors can compromise the integrity of the insulation system: During the installation process, anchors may damage the insulation board, making already weak points even weaker. Insulation boards at anchor points are more susceptible to cracking or detachment under external forces, affecting the overall performance of the insulation system. Since the wall structure is not visible during anchor installation, it's common to miss sections or break the wall surface. The anchors used for insulation board installation are primarily nails, with the pointed end inserted into the wall and the larger end on the insulation board. This makes the nails prone to detaching from their sockets under external forces, leading to loosening of the insulation board.

[0008] Stress concentration and cracking risk: Anchorage locations may cause stress concentration, making the plaster layer in these areas prone to premature cracking, leading to problems such as rainwater leakage. This risk is particularly high under prolonged external forces, such as wind and temperature changes, and is currently the most prominent and unresolved issue.

[0009] In summary, the single operation of the anchoring method in the above-mentioned adhesive installation method, due to the single operation of the anchoring and positioning direction and method of the insulation board, results in uneven positioning strength at various positions of the insulation board. Combined with the failure to promptly and proactively detect the inconsistent insertion depth of the anchoring during on-site construction, there is a significant risk of the insulation board warping or breaking. Utility Model Content

[0010] To overcome the shortcomings of existing technologies, a multi-claw reverse retraction embedded part is provided to solve the above problems.

[0011] A multi-claw reverse retractable embedded component, characterized in that it comprises an expansion bolt, an outer tube, and a telescopic rod, wherein the expansion bolt, outer tube, and telescopic rod are coaxially arranged sequentially; one end of the expansion bolt is connected to the wall, and the other end of the expansion bolt is detachably connected to the outdoor end of the outer tube; one end of the telescopic rod passes through the outer tube; the telescopic rod includes a main rod and multiple outward-extending claws; a cavity is machined along the length of the main rod, and the multiple outward-extending claws are evenly distributed in the cavity along the circumference of the main rod; the other end of the telescopic rod is a pointed tip, which extends and retracts... The tip of the rod is located outside the outer tube, and multiple outward-extending claws are located near the tip of the telescopic rod. Each outward-extending claw is hinged to the inner wall of the cavity. The end of each outward-extending claw near the tip of the telescopic rod is the pressing end, and the other end of each outward-extending claw is the exposed end. When the multiple outward-extending claws are in the retracted state, both ends of each outward-extending claw are inside the cavity. When the multiple outward-extending claws are in the extended state, the multiple outward-extending claws are inclined around the main rod, with the pressing end of each outward-extending claw located inside the cavity and the exposed end of each outward-extending claw facing the tip.

[0012] The inner wall of the outer tube is machined with a groove along its length. The outer wall of the telescopic rod slides in conjunction with the groove. A protrusion that slides in conjunction with the groove is provided on the outer wall of the end of the telescopic rod facing the wall. The main rod slides back and forth along the length of the groove through the protrusion. When the protrusion is close to the end of the outer tube facing the outside, the telescopic rod is in an extended state. When the protrusion is close to the end of the outer tube facing the inside, the telescopic rod is in an in retracted state.

[0013] The main rod has multiple elongated holes machined along its circumference. The length direction of each elongated hole is the same as that of the main rod. Each elongated hole is connected to the cavity. Each elongated hole is set with an outward claw. The pressing end of each outward claw is fitted with a cover. When the multiple outward claws are in the retracted state, each outward claw is set in its corresponding elongated hole. Each outward claw is hinged to the inner wall of the cavity through a rotating shaft. Each cover is attached to the outer end of its corresponding elongated hole facing the outside. When the multiple outward claws are in the extended state, the outer wall of each outward claw is pressed against the outer end of the elongated hole facing the outside.

[0014] When the multiple extended claws are in the retracted state, each extended claw has a triangular circular blade on one side inside the cavity.

[0015] The end of the outer tube facing the interior is a sealed end. A plastic bag is installed inside the outer tube and is attached to the inner wall of the sealed end of the outer tube. Multiple glue outlet slits are machined on the outer tube. Each glue outlet slit is connected to the interior of the outer tube and is oriented towards the plastic bag. The plastic bag is ruptured and releases the glue by the inward movement of the telescopic rod inside the outer tube.

[0016] The plastic bag has tear marks, which are positioned towards the telescopic rod and / or the glue dispensing gap.

[0017] A multi-claw support insulation system includes multiple multi-claw reverse retractable embedded parts and an external insulation layer. The external insulation layer includes multiple rows of insulation strips, which are horizontally arranged from top to bottom along the height of the wall. Each row of insulation strips includes multiple insulation boards, and the insulation boards in adjacent rows of insulation strips are staggered. Each insulation board is provided with multiple multi-claw reverse retractable embedded parts. When the number of multi-claw reverse retractable embedded parts is four, the four multi-claw reverse retractable embedded parts are respectively inserted at the four corners of a single insulation board. Each multi-claw reverse retractable embedded part includes an expansion bolt, an outer tube, and a telescopic rod. The expansion bolt, outer tube, and telescopic rod are arranged coaxially in sequence. One end of the expansion bolt is connected to the wall, and the other end of the expansion bolt is detachably connected to the outer tube facing the outside. One end of the telescopic rod passes through the outer tube. The telescopic rod includes a main rod and multiple outward claws. A cavity is machined along the length of the main rod. The multiple outward claws are evenly distributed in the cavity along the circumference of the main rod. The other end of the telescopic rod is a tip, which is located outside the outer tube. The multiple outward claws are all located near the tip of the telescopic rod. Each outward claw is hinged to the inner wall of the cavity. The end of each outward claw near the tip of the telescopic rod is the pressing end, and the other end of each outward claw is the exposed end. When the multiple outward claws are in the retracted state, both ends of each outward claw are in the cavity. When the multiple outward claws are in the extended state, the multiple outward claws are inclined around the main rod, with the pressing end of each outward claw located in the cavity and the exposed end of each outward claw facing the tip. The distance between each multi-claw reverse retraction embedded part and the wide side of the insulation board it is located is 300mm, and the distance between each multi-claw reverse retraction embedded part and the long side of the insulation board is 150mm.

[0018] The beneficial effects of this utility model are as follows:

[0019] I. The multi-claw reverse retraction embedded part in this utility model is a type of embedded anchor rod. Through the cooperation of expansion bolts, outer tubes, and telescopic rods, it can fix the insulation board to the outer wall in a clamping manner, realizing the initial fixing and secondary retraction of the insulation board in an expanded multi-point positioning process. Compared with the fixing method of adhesive anchoring, it is more stable and less prone to falling off. It is conducive to increasing the diversity of positioning directions and methods for the insulation board. It can be selected according to the environment of the building renovation and construction requirements. The structure of the outer tube itself, the structure of the telescopic rod itself, and the cooperation relationship between the two are conducive to improving the uniformity of positioning strength of all positions of the insulation board, and to standardizing the insertion depth, forming a uniform positioning process for each insulation board.

[0020] Second, the multi-claw support insulation system in this utility model can achieve a structural form of uniform overall insulation positioning, reducing the probability of edge warping and detachment. It can also adjust the insulation thickness of the insulation board according to different types of walls and different local insulation requirements of the wall, and adjust the degree of adaptation and expansion of the multi-claw reverse retraction embedded parts accordingly. It can be adapted to a variety of complex insulation renovation projects, which helps to reduce the types of anchor rods configured in the same project, reduce the difficulty of renovation, and improve the diversity of local treatment of insulation boards during the renovation process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the semi-sectional three-dimensional structure of this utility model;

[0022] Figure 2 This is a three-dimensional structural diagram of the telescopic pole;

[0023] Figure 3 This is a three-dimensional structural diagram of the outward-extending claw;

[0024] Figure 4 This is a schematic diagram of a partial cross-sectional structure of the telescopic rod;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the outer tube;

[0026] Figure 6 This is a schematic diagram of a partial cross-sectional structure of the outer tube;

[0027] Figure 7 This is a schematic diagram of the three-dimensional structure of the plastic bag;

[0028] Figure 8-1 A cross-sectional view of the multi-claw reverse retraction embedded part in its first stage of use;

[0029] Figure 8-2 This is a cross-sectional view of the multi-claw reverse retraction embedded part in its second stage of use. The upper arrow in the figure indicates the pulling-out direction of the telescopic rod, and the lower arrow indicates the retraction direction of the telescopic rod.

[0030] Figure 8-3 A cross-sectional view of the multi-claw reverse retraction embedded part in its third stage of use;

[0031] Figure 9 This is a schematic diagram illustrating the effect of using a multi-claw reverse retraction embedded part.

[0032] In the diagram: 1-Expansion bolt; 2-Outer tube; 2-2-1-Slide groove; 2-3-Glue outlet gap; 3-Telescopic rod; 3-1-Main rod; 3-2-Extending claw; 3-2-1-Wrap sleeve; 3-2-2-Triangular round blade; 3-3-Cavity; 3-5-Protrusion; 3-6-Elongated hole; 4-Plastic bag; 4-1-Tear dent; 5-Insulation board; 6-Wall; 7-Multi-claw reverse retraction embedded part. Detailed Implementation

[0033] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0034] Specific implementation method one: Combining Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 This embodiment describes a multi-claw reverse retraction embedded component comprising an expansion bolt 1, an outer tube 2, and a telescopic rod 3. The expansion bolt 1, outer tube 2, and telescopic rod 3 are coaxially arranged sequentially. One end of the expansion bolt 1 is connected to the wall 6, and the other end of the expansion bolt 1 is detachably connected to the outdoor end of the outer tube 2, preferably using a threaded connection. One end of the telescopic rod 3 passes through the outer tube 2. The telescopic rod 3 includes a main rod 3-1 and multiple outward-extending claws 3-2. A cavity 3-3 is machined along the length of the main rod 3-1. The multiple outward-extending claws 3-2 are evenly distributed within the cavity 3-3 along the circumference of the main rod 3-1. The other end of the telescopic rod 3 is a pointed tip, with the sharp point designed in an arc shape to ensure effective penetration of the insulation board 5. This embedded part can be quickly inserted into the insulation board 5, and can avoid being too sharp and injuring the staff. The tip of the telescopic rod 3 is set outside the outer tube 2. Multiple outward claws 3-2 are set close to the tip of the telescopic rod 3. Each outward claw 3-2 is hinged to the inner wall of the cavity 3-3. The end of each outward claw 3-2 near the tip of the telescopic rod 3 is the pressing end, and the other end of each outward claw 3-2 is the exposed end. When the multiple outward claws 3-2 are in the retracted state, both ends of each outward claw 3-2 are in the cavity 3-3. When the multiple outward claws 3-2 are in the extended state, the multiple outward claws 3-2 are inclined around the main rod 3-1. The pressing end of each outward claw 3-2 is set in the cavity 3-3, and the exposed end of each outward claw 3-2 is set towards the tip.

[0035] When the multiple outward claws 3-2 are in the retracted state, each outward claw 3-2 has a triangular circular blade 3-2-2 on one side inside the cavity 3-3. The triangular circular blade 3-2-2 ensures that the outward claw 3-2 can be easily inserted into the insulation plate 5.

[0036] The main rod 3-1 has multiple elongated holes 3-6 machined along its circumference. The length direction of each elongated hole 3-6 is the same as that of the main rod 3-1. Each elongated hole 3-6 is connected to the cavity 3-3. The elongated holes 3-6 are correspondingly set with the extended claws 3-2. The pressing end of each extended claw 3-2 is fitted with a cover sleeve 3-2-1. When the multiple extended claws 3-2 are in the retracted state, each extended claw 3-2 is positioned in its corresponding elongated hole 3-6. Each extended claw 3-2 is connected to the inner wall of the cavity 3-3 via a rotating shaft. The components are hinged together, with each sleeve 3-2-1 abutting against the outdoor end of its corresponding elongated hole 3-6, which limits the position of the outward-extending claw 3-2 and ensures the stability of the outward-extending claw 3-2 in its retracted state. When multiple outward-extending claws 3-2 are in the extended state, the outer wall of each outward-extending claw 3-2 is pressed against the outdoor end of the elongated hole 3-6, which limits the extension angle of the outward-extending claw 3-2 and also provides support for the triangular circular blade 3-2-2 when it cuts into the insulation plate 5.

[0037] The telescopic rod 3's outward claws 3-2, in cooperation with the main rod 3-1, expansion bolt 1, and outer tube 2, achieve corresponding deformations at different usage stages. When multiple outward claws 3-2 are in the retracted state, the insulation board 5 is connected only through the main rod 3-1, with each outward claw 3-2 hidden within the cavity 3-3, ensuring a smooth and undisturbed appearance when the main rod 3-1 is inserted. When multiple outward claws 3-2 are in the extended state, pressing down on the pressing end of each outward claw 3-2 one by one causes the covering sleeve to... 3-2-1 is hidden inside the cavity 3-3. At this time, the other end of the extended claw 3-2 is raised and rotated at least 90° toward the tip of the telescopic rod 3 until the exposed side of the extended claw 3-2 is against the end of the elongated hole 3-6 facing the outside. Multiple extended claws 3-2 are inclinedly arranged around the main rod 3-1, forming a composite effect of the main rod 3-1 supporting and the multi-claw circumferential support, thereby ensuring that when the single multi-claw reverse retraction embedded part 7 is used, it can achieve a large-area gripping and positioning process on the insulation board 5.

[0038] Combination Figure 8-1 , Figure 8-2 and Figure 8-3 Explanation of the phased working principle of this implementation method:

[0039] Combination Figure 8-1 As shown, the first stage: installation of the multi-claw reverse retraction embedded part 7: after drilling holes on the outer surface of the wall 6, the expansion bolt 1 is fixed in the holes, and the outer tube 2 is connected to the expansion bolt 1 by threaded connection.

[0040] Combination Figure 8-2 As shown, the second stage: pretreatment of the multi-claw reverse retraction embedded part 7: extend the telescopic rod 3 outward along the extension direction of the outer tube 2, and rotate the telescopic rod 3 axially so that the protrusion 3-5 disengages from the slide groove 2-2-1 and abuts against the inner wall of the outer tube 2.

[0041] Laying the insulation board 5: Press the insulation board 5 onto the tip of the telescopic rod 3, so that the multi-claw retracts the embedded part 7 through the insulation board 5.

[0042] Combination Figure 8-2 and Figure 8-3 As shown, the third stage: the unfolding process of the outward claw 3-2: press down on the pressing end of each outward claw 3-2 one by one, so that the wrapping sleeve 3-2-1 is hidden in the cavity 3-3. At this time, the other end of the outward claw 3-2 is raised and rotated at least 90° towards the tip of the telescopic rod 3 until the exposed side of the outward claw 3-2 is against the end of the elongated hole 3-6 facing the outside. Multiple outward claws 3-2 are inclinedly arranged around the main rod 3-1, forming a composite effect of main rod 3-1 support and multi-claw circumferential support.

[0043] Fixing the insulation board 5: With the multiple outstretched claws 3-2 extended, press the telescopic rod 3 back towards the insulation board 5, combining... Figure 8-2 The lower arrow in the diagram indicates the direction of back pressure, causing multiple triangular circular blades 3-2-2 to simultaneously cut into the insulation board 5. This enables the multi-claw reverse retraction of the embedded part 7 to grasp and position the circumferential part of a single point on the insulation board 5, thus achieving the purpose of clamping and fixing the insulation board 5. At the same time, the outward-extending claws 3-2 are hidden inside the insulation board 5, making the outer surface of the insulation board 5 flat and not affecting subsequent plastering operations.

[0044] Specific Implementation Method Two: In this implementation method, the inner wall of the outer tube 2 is machined with a groove 2-2-1 along its length. The outer wall of the telescopic rod 3 slides in conjunction with the groove 2-2-1. A protrusion 3-5 is provided on the outer wall of the end of the telescopic rod 3 facing the wall 6, which slides in conjunction with the groove 2-2-1. The protrusion 3-5 is hollow. The main rod 3-1 slides back and forth along the length of the groove 2-2-1 through the protrusion 3-5. When the protrusion 3-5 is close to the end of the outer tube 2 facing the outside, the telescopic rod 3 is in an extended state. When the protrusion 3-5 is close to the end of the outer tube 2 facing the inside, the telescopic rod 3 is in an in retracted state. The outer tube 2 and the telescopic rod 3 are telescopic structures. The extension and retraction directions of the telescopic rod 3 change differently according to different stages of use, so that this utility model can meet the installation requirements of insulation boards 5 of different thicknesses.

[0045] Furthermore, the slide groove 2-2-1 can be replaced with an annular slide groove, and correspondingly, the protrusion 3-5 can be replaced with an annular protrusion. The slide groove 2-2-1 provides a guiding and limiting function for the movement of the annular protrusion.

[0046] Specific implementation method three: Combining Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 In this embodiment, the end of the outer tube 2 facing the interior is a sealed end. A plastic bag 4 is installed inside the outer tube 2, and the plastic bag 4 is attached to the inner wall of the sealed end of the outer tube 2. Multiple glue outlet slits 2-3 are processed on the outer tube 2, and each glue outlet slit 2-3 is connected to the interior of the outer tube 2. Each glue outlet slit 2-3 is positioned facing the plastic bag 4. The plastic bag 4 is broken and releases glue by the inward movement of the telescopic rod 3 inside the outer tube 2. The plastic bag 4 is provided with a tearing groove 4-1, which is preferably star-shaped. The tearing groove 4-1 is positioned facing the telescopic rod 3 and / or the glue outlet slits 2-3. The tearing groove 4-1 is more conducive to the telescopic rod 3 quickly breaking the plastic bag 4 by squeezing, so that the glue inside the plastic bag 4 flows out quickly, which is conducive to the glue flowing out from the through hole 2-3 to fill the gap of the insulation board 5.

[0047] When the outer tube 2 is a single piece, the plastic bag 4 and the telescopic rod 3 are installed sequentially inside the outer tube 2. When the outer tube 2 is an assembly, it is composed of two long strips with a semi-circular cross-section. The two strips can be detached and connected. The assembly structure facilitates the arrangement of the plastic bag 4. The specific disassembly and assembly principle is to put the plastic bag 4 and the telescopic rod 3 into the arc groove of one of the semi-circular long strips in the outer tube 2 in sequence, and then to fasten the other semi-circular long strip with it to form the outer tube 2 with the plastic bag 4 and the telescopic rod 3.

[0048] When the telescopic rod 3 is pressed towards the wall 6 and retracted into the outer tube 2, the telescopic rod 3 squeezes the plastic bag 4. After the tear dent 4-1 is broken, the sealant in the plastic bag 4 flows out through the tear dent 4-1 and is squeezed out through the through hole 2-3, so that the glue fills the gap between the outer tube 2 and the insulation board 5. After the glue solidifies, there are no gaps in the insulation board 5, ensuring that the insulation effect of the insulation board 5 is not damaged. At the same time, it can also strengthen the connection between the insulation board 5 and the embedded part, enhance wind resistance, and further reduce the risk of the insulation board 5 falling off.

[0049] Because the telescopic rod 3 and the outer pipe 2 are telescopic structures, in strong winds, if the wind blows the insulation board 5, the insulation board 5 will pull the telescopic rod 3 outward along the extension direction of the outer pipe 2, causing the insulation board 5 to separate from the wall 6, increasing the risk of the insulation board 5 falling off. However, the sealant remaining inside the outer pipe 2 solves this problem. The remaining sealant will stick the telescopic rod 3 and the outer pipe 2 together. After it solidifies, it strengthens the connection between the telescopic rod 3 and the outer pipe 2, preventing the risk of the telescopic rod 3 being pulled outward by external force and causing the insulation board 5 to separate from the wall 6.

[0050] Specific Implementation Method Four: Combination Figure 8-1, Figure 8-2 and Figure 8-3 ,and Figure 9 This embodiment describes a multi-claw support insulation system, comprising multiple multi-claw reverse retractable embedded parts 7 and an external insulation layer. The external insulation layer includes multiple rows of insulation strips, which are horizontally arranged from top to bottom along the height of the wall 6. Each row of insulation strips includes multiple insulation boards 5, which are staggered in adjacent rows. Each insulation board 5 is provided with multiple multi-claw reverse retractable embedded parts 7. When there are four multi-claw reverse retractable embedded parts 7, the four multi-claw reverse retractable embedded parts 7 respectively penetrate... Located at the four corners of the single-piece insulation board 5, each multi-claw reverse retractable embedded part 7 includes an expansion bolt 1, an outer tube 2, and a telescopic rod 3. The expansion bolt 1, outer tube 2, and telescopic rod 3 are arranged coaxially in sequence. One end of the expansion bolt 1 is connected to the wall 6, and the other end of the expansion bolt 1 is detachably connected to the outdoor end of the outer tube 2. One end of the telescopic rod 3 passes through the outer tube 2. The telescopic rod 3 includes a main rod 3-1 and multiple outward claws 3-2. The main rod 3-1 has a cavity 3-3 machined along its length. The multiple outward claws 3-2 are arranged along... The main rod 3-1 is evenly distributed circumferentially within the cavity 3-3. The other end of the telescopic rod 3 is a pointed tip, which is located outside the outer tube 2. Multiple outward-extending claws 3-2 are positioned near the tip of the telescopic rod 3. Each outward-extending claw 3-2 is hinged to the inner wall of the cavity 3-3. The end of each outward-extending claw 3-2 near the tip of the telescopic rod 3 is the pressing end, and the other end is the exposed end. When the multiple outward-extending claws 3-2 are in the retracted state, both ends of each outward-extending claw 3-2 are within the cavity 3-3; when the multiple outward-extending claws 3-... 2. When in the unfolded state, multiple outward-extending claws 3-2 are inclinedly arranged around the main rod 3-1. The pressing end of each outward-extending claw 3-2 is located in the cavity 3-3, and the exposed end of each outward-extending claw 3-2 is set towards the tip. The distance between each multi-claw reverse retractable embedded part 7 and the wide side of the insulation board 5 is 300mm, and the distance between each multi-claw reverse retractable embedded part 7 and the long side of the insulation board 5 is 150mm. The laying distance of the multi-claw reverse retractable embedded part 7 can achieve that the multi-claw reverse retractable embedded part 7 is evenly laid on multiple insulation boards 5.

[0051] Working principle

[0052] How to fix the insulation board:

[0053] After drilling holes on the outer surface of wall 6, fix expansion bolts 1 into the holes and connect outer tube 2 to expansion bolts 1 by thread. Pull the telescopic rod 3 outward, press the pressing end of each outward protrusion claw 3-2 so that the pressing end is in the cavity 3-3, and rotate the outward protrusion claw 3-2 so that the outer wall of each outward protrusion claw 3-2 is pressed against the end of the elongated hole 3-6 facing the outside. The end of the elongated hole 3-6 facing the outside limits the unfolding angle of the outward protrusion claw 3-2, so that the multiple outward protrusion claws 3-2 form a trumpet shape. The telescopic rod 3 unfolds, and at the same time, the triangular circular blade 3-2-2 provides support when cutting into the insulation board 5. Then, the telescopic rod 3 is pressed towards the wall 6, so that the outstretched claw 3-2 clamps the insulation board 5 onto the wall 6, thereby fixing the insulation board 5. At the same time, the telescopic rod 3 retracts back into the groove 2-2, and the triangular circular blade 3-3-2 breaks open the outer surface of the insulation board 5, so that the outstretched claw 3-2 is embedded in the insulation board 5, making the outer surface of the insulation board 5 flat, thereby ensuring that it does not affect the subsequent plastering process of the insulation board 5.

Claims

1. A multi-claw reverse retractable embedded part, characterized in that: The device includes an expansion bolt (1), an outer tube (2), and a telescopic rod (3). The expansion bolt (1), outer tube (2), and telescopic rod (3) are arranged coaxially in sequence. One end of the expansion bolt (1) is connected to the wall (6), and the other end of the expansion bolt (1) is detachably connected to the end of the outer tube (2) facing the outside. One end of the telescopic rod (3) is inserted into the outer tube (2). The telescopic rod (3) includes a main rod (3-1) and multiple outward claws (3-2). A cavity (3-3) is machined in the main rod (3-1) along its length. The multiple outward claws (3-2) are evenly distributed in the cavity (3-3) along the circumference of the main rod (3-1). The other end of the telescopic rod (3) is a tip, and the tip of the telescopic rod (3) is located in the outer tube. (2) In addition, multiple outward claws (3-2) are set close to the tip of the telescopic rod (3). Each outward claw (3-2) is hinged to the inner wall of the cavity (3-3). One end of each outward claw (3-2) close to the tip of the telescopic rod (3) is the pressing end, and the other end of each outward claw (3-2) is the exposed end. When the multiple outward claws (3-2) are in the retracted state, both ends of each outward claw (3-2) are in the cavity (3-3). When the multiple outward claws (3-2) are in the extended state, the multiple outward claws (3-2) are inclined around the main rod (3-1). The pressing end of each outward claw (3-2) is set in the cavity (3-3), and the exposed end of each outward claw (3-2) is set towards the tip.

2. The multi-claw reverse retraction embedded part according to claim 1, characterized in that: The inner wall of the outer tube (2) is machined with a groove (2-2-1) along its length. The outer wall of the telescopic rod (3) is slidably engaged with the groove (2-2-1). A protrusion (3-5) is provided on the outer wall of the end of the telescopic rod (3) facing the wall (6) and is slidably engaged with the groove (2-2-1). The main rod (3-1) slides back and forth along the length of the groove (2-2-1) through the protrusion (3-5). When the protrusion (3-5) is close to the end of the outer tube (2) facing the outside, the telescopic rod (3) is in an extended state. When the protrusion (3-5) is close to the end of the outer tube (2) facing the inside, the telescopic rod (3) is in an in retracted state.

3. The multi-claw reverse retraction embedded part according to claim 1, characterized in that: The main rod (3-1) has multiple elongated holes (3-6) machined along its circumference. The length direction of each elongated hole (3-6) is the same as that of the main rod (3-1). Each elongated hole (3-6) is connected to the cavity (3-3). Each elongated hole (3-6) is set with an external claw (3-2). The pressing end of each external claw (3-2) is fitted with a cover (3-2-1). When the multiple external claws (3-2) are in the retracted state, each external claw (3-2) is set in its corresponding elongated hole (3-6). Each external claw (3-2) is hinged to the inner wall of the cavity (3-3) through a rotating shaft. Each cover (3-2-1) is attached to the end of its corresponding elongated hole (3-6) facing the outside. When the multiple external claws (3-2) are in the extended state, the outer wall of each external claw (3-2) is pressed against the end of the elongated hole (3-6) facing the outside.

4. A multi-claw reverse retractable embedded part according to claim 1 or 3, characterized in that: When the multiple extended claws (3-2) are in the retracted state, each extended claw (3-2) has a triangular circular blade (3-2-2) on one side inside the cavity (3-3).

5. A multi-claw reverse retraction embedded part according to claim 2, characterized in that: The end of the outer tube (2) facing the room is the sealed end. A plastic bag (4) is installed inside the outer tube (2). The plastic bag (4) is attached to the inner wall of the sealed end of the outer tube (2). Multiple glue outlet slits (2-3) are processed on the outer tube (2). Each glue outlet slit (2-3) is connected to the inside of the outer tube (2). Each glue outlet slit (2-3) is facing the plastic bag (4). The plastic bag (4) is broken and releases glue by the inward movement of the telescopic rod (3) inside the outer tube (2).

6. A multi-claw reverse retractable embedded part according to claim 5, characterized in that: The plastic bag (4) is provided with a tear groove (4-1) facing the telescopic rod (3) and / or the glue outlet gap (2-3).

7. A multi-claw support insulation system, comprising a multi-claw reverse retractable embedded part as described in any one of claims 1 to 6, characterized in that: The multi-claw support insulation system includes multiple multi-claw reverse retractable embedded parts (7) and an external insulation layer. The external insulation layer includes multiple rows of insulation strips. The multiple rows of insulation strips are arranged horizontally from top to bottom along the height direction of the wall (6). Each row of insulation strips includes multiple insulation boards (5). The multiple insulation boards (5) in two adjacent rows of insulation strips are staggered. Each insulation board (5) is provided with multiple multi-claw reverse retractable embedded parts (7). When the number of multi-claw reverse retractable embedded parts (7) is four, the four multi-claw reverse retractable embedded parts (7) are respectively inserted at the four corners of the single insulation board (5). Each multi-claw reverse retractable embedded part (7) includes an expansion bolt (1), an outer tube (2), and a telescopic rod (3). The expansion bolt (1), outer tube (2), and telescopic rod (3) are arranged coaxially in sequence. One end of the expansion bolt (1) is connected to the wall (6), and the other end of the expansion bolt (1) is detachably connected to the end of the outer tube (2) facing the outside. One end of the telescopic rod (3) is inserted into the outer tube (2). The telescopic rod (3) includes a main rod (3-1) and multiple outward claws (3-2). A cavity (3-3) is machined in the main rod (3-1) along its length. The multiple outward claws (3-2) are evenly distributed in the cavity (3-3) along the circumference of the main rod (3-1). The other end of the telescopic rod (3) is a pointed tip. The tip is set outside the outer tube (2), and multiple outward claws (3-2) are set close to the tip of the telescopic rod (3). Each outward claw (3-2) is hinged to the inner wall of the cavity (3-3). One end of each outward claw (3-2) close to the tip of the telescopic rod (3) is the pressing end, and the other end of each outward claw (3-2) is the exposed end. When the multiple outward claws (3-2) are in the retracted state, both ends of each outward claw (3-2) are in the cavity (3-3). When the multiple outward claws (3-2) are in the extended state, the multiple outward claws (3-2) are inclined around the main rod (3-1). The pressing end of each outward claw (3-2) is set in the cavity (3-3), and the exposed end of each outward claw (3-2) faces the tip.

8. The multi-claw support insulation system according to claim 7, characterized in that: The distance between the wide side of each multi-claw reverse retraction embedded part (7) and the insulation board (5) is 300mm, and the distance between the long side of each multi-claw reverse retraction embedded part (7) and the insulation board (5) is 150mm.

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