A nondestructive testing device for thickness of thermal insulation layer of building exterior wall

Abstract

The invention relates to the technical field of thermal insulation layer thickness detection, and discloses a nondestructive detection device for the thickness of the thermal insulation layer of the exterior wall of a building, comprising a support seat, a screw rod rotatably installed inside the support seat, a driving structure for driving the screw rod to move installed on the bottom side of the support seat, a drilling tube for drilling the thermal insulation layer installed on the bottom side of the screw rod, a clamping plate for clamping the thermal insulation layer installed inside the drilling tube, a gear disk for controlling the opening and closing of the clamping plate installed on the surface of the screw rod, and a transmission assembly for controlling the rotation of the gear disk installed on the surface of the screw rod, so that the drilling tube can be horizontally and vertically with the wall surface, thereby improving the stability of the drilling tube and effectively reducing the movement or deviation of the drilling tube during operation, which affects the inaccurate thickness of the drilled thermal insulation layer; when the support seat is horizontally and vertically with the wall surface, the screw rod is coordinated with the driving structure, so that the drilling tube drills the thermal insulation layer, thereby achieving the stability of drilling the thermal insulation layer and reducing the possibility of shaking of the drilling tube.

Description

Technical Field

[0001] The invention relates to the technical field of thermal insulation layer thickness detection, in particular to a non-destructive detection device for the thickness of a thermal insulation layer of a building exterior wall. Background Art

[0002] The building exterior wall insulation layer refers to a layer of insulation material applied to the surface of the building's exterior wall. Its main function is to reduce the heat exchange between the building and the external environment, thereby improving the building's insulation performance. This layer of insulation material can be various types of materials, such as polystyrene foam board, polyurethane foam board, rock wool board, etc. By setting up an insulation layer on the exterior wall of the building, the heat exchange between the inside and outside of the building can be effectively reduced, thereby reducing the energy consumption of air conditioning and heating, saving energy costs, and at the same time, the insulation layer helps to maintain a stable indoor temperature, providing a comfortable indoor environment regardless of how the external climate changes. It can also reduce the possibility of condensation on the wall by isolating external moisture, thereby preventing mold and other moisture-related problems;

[0003] The insulation layer is a key component of building energy conservation. According to statistics, if the building's insulation performance does not meet the standard, it will lead to increased energy consumption, which will in turn aggravate the energy shortage. Therefore, it is necessary to test the insulation layer. By testing the insulation layer, it can be ensured that it meets the energy-saving design standards and reduces the building's energy consumption.

[0004] At present, the conventional method for detecting the thickness of the insulation layer is usually to install a sleeve at the end of a motor. When the operator holds the motor to drill the insulation layer, a certain force is required to push the end of the motor to move toward the inside of the insulation layer. Therefore, the sleeve drills the insulation layer through the cooperation of thrust and rotation force. In the process of obtaining the insulation layer, the operator holding the motor may cause the sleeve to shake, resulting in unnecessary damage to the insulation layer due to the shaking of the sleeve. Therefore, it does not meet the existing needs. In this regard, we propose a non-destructive detection device for the thickness of the insulation layer of the exterior wall of a building. Summary of the invention

[0005] The present invention provides a nondestructive testing device for the thickness of a building exterior wall insulation layer, which has the beneficial effect of solving the conventional method of detecting the thickness of the insulation layer mentioned in the above background technology. Usually, a sleeve is installed at the end of a motor. When an operator holds the motor to drill the insulation layer, a certain force is required to push the end of the motor toward the inside of the insulation layer. Therefore, the sleeve drills the insulation layer through the cooperation of thrust and rotational force. In the process of obtaining the insulation layer, the operator holding the motor may cause the sleeve to shake, thereby causing the insulation layer to have excess damage due to the shaking of the sleeve.

[0006] The present invention provides the following technical solution: a non-destructive testing device for the thickness of a building exterior wall insulation layer, comprising a support seat, a screw rod rotatably installed inside the support seat, a driving structure for driving the screw rod to move installed on the bottom side of the support seat, a drilling tube for drilling the insulation layer installed on the bottom side of the screw rod, a clamping plate for clamping the insulation layer installed inside the drilling tube, a gear plate for controlling the opening and closing of the clamping plate installed on the surface of the screw rod, and a transmission assembly for controlling the rotation of the gear plate installed on the surface of the screw rod.

[0007] As an optional solution of the non-destructive testing device for the thickness of the building exterior wall insulation layer described in the present invention, the driving structure includes a support plate installed on the bottom side of the support base, and a driving gear and a driving motor respectively installed on both sides of the support plate, and a rotating gear installed on the bottom side of the support base, the rotating gear is threadedly matched with the screw rod, the driving motor is in transmission cooperation with the driving gear, and the rotating gear is meshed with the driving gear.

[0008] As an optional solution of the non-destructive testing device for the thickness of the building exterior wall insulation layer described in the present invention, wherein: a plurality of drill bits are hinged on the bottom side of the drilling tube, and a plurality of the drill bits are in an inclined state in normal state, a one-way torsion spring is installed between the drill bit and the drilling tube, and scale lines for measuring the insulation layer are provided on the surface of the drilling tube, and a supporting foot for fitting with the wall surface is installed on the bottom side of the support seat.

[0009] As an optional solution of the non-destructive testing device for the thickness of the building exterior wall insulation layer described in the present invention, a support plate is installed on the bottom side of the screw rod, the gear plate is rotatably installed on the upper side of the support plate, a track groove is opened on the surface of the gear plate, a sliding column is slidably installed inside the track groove, and a connecting rod for connecting with the clamping plate is installed on the bottom side of the sliding column.

[0010] As an optional solution of the device for non-destructive testing the thickness of the building exterior wall insulation layer described in the present invention, the transmission assembly includes a first gear installed on the upper side of the gear plate, a second gear rotatably installed on the surface of the screw rod, and a support frame rotatably installed between the first gear and the second gear, a third gear rotatably installed on the side of the support frame, and the two sides of the third gear are respectively meshed with the second gear and the first gear.

[0011] As an optional solution of the non-destructive testing device for the thickness of the building exterior wall insulation layer described in the present invention, a spiral spring is installed between the second gear and the screw rod, one end of the spiral spring is connected to the inner wall of the second gear, and the other end of the spiral spring is connected to the screw rod. The second gear is meshed with the first gear and the third gear for transmission. The gear plate is rotated by the first gear, so that the sliding column slides from one end of the track groove to the other end, so that the sliding column drives the clamping plate to open and close by using the connecting rod.

[0012] As an optional solution of the non-destructive testing device for the thickness of the building exterior wall insulation layer described in the present invention, a piston cylinder is installed on the upper side of the first gear, a first threaded section is opened on the surface of the piston cylinder, a sliding plate is slidably installed inside the piston cylinder, and the sliding plate is threadably matched with the first threaded section.

[0013] As an optional solution of the non-destructive testing device for the thickness of the building exterior wall insulation layer described in the present invention, a first air bag for wrapping the clamping plate is installed inside the drilling cylinder, and a connecting pipe for gas circulation is installed between the first air bag and the piston cylinder.

[0014] As an optional solution to the non-destructive testing device for the thickness of the building exterior wall insulation layer described in the present invention, a support rod is installed on the bottom side of the support plate, a connecting plate is installed on the end of the support rod, a second threaded section is opened on the surface of the support rod, and a sliding block is slidably installed on the surface of the support rod.

[0015] As an optional solution of the non-destructive testing device for the thickness of the building exterior wall insulation layer described in the present invention, the sliding block is threadedly matched with the second threaded section, a pushing plate for pushing the insulation layer out is installed on the bottom side of the sliding block, and a vertical rod for connection is installed between the pushing plate and the sliding block.

[0016] The present invention has the following beneficial effects:

[0017] 1. The nondestructive testing device for the thickness of the thermal insulation layer of the building's exterior wall, in the process of drilling the thermal insulation layer, through the cooperation of the support seat and the support foot, the drilling tube can be horizontally and vertically with the wall surface, thereby improving the stability of the drilling tube and effectively reducing the movement or deviation of the drilling tube during operation, which affects the inaccurate thickness of the drilled thermal insulation layer; when the support seat is horizontally and vertically with the wall surface, the screw rod cooperates with the driving structure to enable the drilling tube to drill the thermal insulation layer, thereby achieving the stability of the drilling thermal insulation layer and reducing the possibility of shaking of the drilling tube.

[0018] 2. The nondestructive testing device for the thickness of the thermal insulation layer of the building's exterior wall, during the process of drilling the thermal insulation layer, the thermal insulation layer is clamped by the cooperation between the first gear, the second gear, the third gear and the scroll spring, and the forward and reverse driving of the screw rod, so that the drilled thermal insulation layer and the wall surface can fall off smoothly. After the thermal insulation layer and the wall surface fall off, the clamping of the thermal insulation layer can be automatically lost, so that the thermal insulation layer and the drilling tube can fall off smoothly, effectively realizing the automation of the clamping of the thermal insulation layer; at the same time, through the sliding cooperation between the sliding plate and the first threaded section, the gas inside the piston cylinder can push the first airbag through the connecting pipe, so that the first airbag squeezes the end of the clamping plate to achieve reliable clamping of the thermal insulation layer.

[0019] 3. The nondestructive testing device for the thickness of the thermal insulation layer of the building's exterior wall drives the sliding block to cooperate with the second threaded section through the reverse rotation of the screw rod to push the plate downward. During the process, the bottom side of the pushing plate can contact the upper side of the thermal insulation layer. When the thermal insulation layer falls off the wall, the pushing plate continues to be affected by the rotation of the screw rod, and the end of the thermal insulation layer can be extended out of the drilling tube, making it convenient for the operator to take the thermal insulation layer. Moreover, through the reversal of the screw rod, the pushing plate is automatically pushed out, so that the thermal insulation layer can be smoothly taken out, simplifying the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the half-section structure of the drilling tube of the present invention.

[0022] Figure 3 It is a schematic diagram of the enlarged structure of point A of the present invention.

[0023] Figure 4 It is a schematic diagram of the cooperation structure between the drilling tube and the support plate of the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the gear plate and the support plate of the present invention viewed from above.

[0025] Figure 6 It is a schematic diagram of the unfolded structure of the clamping plate of the present invention.

[0026] Figure 7 It is a schematic diagram of the matching structure of the gear plate and the support plate of the present invention.

[0027] Figure 8 It is a schematic diagram of the cross-sectional structure of the present invention.

[0028] Fig. 9 It is a schematic diagram of the enlarged structure of point B of the present invention.

[0029] In the figure: 110, support seat; 112, screw rod; 113, drilling tube; 114, support plate; 115, driving gear; 120, driving motor; 121, drill; 122, one-way torsion spring; 123, scale line; 130, support plate; 131, gear plate; 132, clamping plate; 133, track groove; 134, sliding column; 135, connecting rod; 140, first gear; 143, second gear; 144, scroll spring; 150, support Support frame; 151, third gear; 160, piston cylinder; 161, first threaded section; 162, sliding plate; 163, first airbag; 164, connecting pipe; 170, support rod; 171, connecting plate; 172, second threaded section; 173, sliding block; 174, pushing plate; 175, vertical rod; 180, supporting foot; 190, rotating gear; 210, connecting groove; 220, connecting column; 230, transmission assembly; 240, driving structure. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1: This embodiment is intended to promote the solution of the conventional method of detecting the thickness of the thermal insulation layer. Usually, a sleeve is installed at the end of the motor. When the operator holds the motor to drill the thermal insulation layer, a certain force is required to push the end of the motor to move inside the thermal insulation layer. Therefore, the sleeve drills the thermal insulation layer through the combination of thrust and rotation force. In the process of obtaining the thermal insulation layer, the operator holding the motor may cause the sleeve to shake, which may cause the thermal insulation layer to have extra damage due to the shaking of the sleeve. Please refer to Figure 1-Figure 9 A nondestructive testing device for the thickness of a building exterior wall insulation layer comprises a support base 110, a screw rod 112 is rotatably installed inside the support base 110, a driving structure 240 for driving the screw rod 112 to move is installed on the bottom side of the support base 110, a drilling cylinder 113 for drilling the insulation layer is installed on the bottom side of the screw rod 112, a clamping plate 132 for clamping the insulation layer is installed inside the drilling cylinder 113, a gear disk 131 for controlling the opening and closing of the clamping plate 132 is installed on the surface of the screw rod 112, a plurality of clamping plates 132 are provided, and the plurality of clamping plates 132 are installed on the side of the gear disk 131 in a ring array, and a transmission component 230 for controlling the rotation of the gear disk 131 is installed on the surface of the screw rod 112.

[0032] See Figure 1During the specific implementation, the operator manually places the support seat 110 horizontally and vertically on the wall, and the support foot 180 is in contact with the wall. Through the cooperation between the support seat 110 and the support foot 180, the drilling tube 113 can be horizontally and vertically with the wall, thereby improving the stability of the drilling tube 113.

[0033] The driving structure 240 includes a support plate 114 installed on the bottom side of the support base 110, a driving gear 115 and a driving motor 120 respectively installed on both sides of the support plate 114, and a rotating gear 190 installed on the bottom side of the support base 110, the rotating gear 190 cooperates with the thread on the surface of the screw rod 112, the driving motor cooperates with the driving gear 115 for transmission, and the rotating gear is meshed with the driving gear 115.

[0034] It should be noted that the driving gear 115 and the rotating gear 190 are both configured as umbrella-shaped gears.

[0035] See Figure 1 In a specific implementation, when the support seat 110 is horizontally vertical to the wall, the movable end of the driving motor 120 drives the driving gear 115 to rotate, and the driving gear 115 drives the rotating gear 190 to rotate. During the rotation of the rotating gear 190, the thread on the surface of the screw rod 112 is used to cooperate, so that the screw rod 112 moves up and down, so that the drilling tube 113 uses the screw rod 112 to drill the insulation layer.

[0036] See Figure 1 and Figure 2 In specific implementation, a plurality of drill bits 121 are hinged on the bottom side of the drilling tube 113, and the plurality of drill bits 121 are in an inclined state in normal state. Due to the gap between the drilling tube 113 and the clamping plate 132, the setting of the drill bit 121 plays a role in guiding the insulation layer, so that the insulation layer reaches between the plurality of clamping plates 132. A one-way torsion spring 122 is installed between the drill bit 121 and the drilling tube 113. When the insulation layer inside the drilling tube 113 is taken out, the drill bit 121 is pushed by the bottom side of the insulation layer and unfolds from the inclined state. The surface of the drilling tube 113 is provided with scale lines 123 for measuring the insulation layer, and the bottom side of the support seat 110 is provided with support feet 180 for fitting with the wall.

[0037] In the present embodiment: during the drilling of the insulation layer, the support seat 110 and the support foot 180 cooperate to enable the drilling tube 113 to be horizontally and vertically relative to the wall surface, thereby improving the stability of the drilling tube and effectively reducing the movement or displacement of the drilling tube during operation, which may cause inaccurate thickness of the drilled insulation layer. When the support seat 110 is horizontally and vertically relative to the wall surface, the screw rod 112 cooperates with the driving structure 240 to enable the drilling tube to drill the insulation layer, thereby achieving stability in drilling the insulation layer and reducing the possibility of shaking of the drilling tube.

[0038] Embodiment 2: This embodiment is intended to solve the problem that after the drill tube 113 drills the insulation layer, the insulation layer cannot be completely separated from the wall due to the adhesion between the insulation layers, and part of the insulation layer may remain inside the wall. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-Figure 9 A support plate 130 is installed on the bottom side of the screw rod 112, and a gear plate 131 is rotatably installed on the upper side of the support plate 130. A track groove 133 is opened on the surface of the gear plate 131, and a sliding column 134 is slidably installed inside the track groove 133. A connecting rod 135 for connecting with the clamping plate 132 is installed on the bottom side of the sliding column 134.

[0039] See Figure 2 , Figure 3 , Figure 4 , Figure 8 and Fig. 9 The transmission assembly 230 includes a first gear 140 installed on the upper side of the gear plate 131, a second gear 143 rotatably installed on the surface of the screw rod 112, and a support frame 150 rotatably installed between the first gear 140 and the second gear 143. A third gear 151 is rotatably installed on the side of the support frame 150. The two sides of the third gear 151 are respectively meshed with the second gear 143 and the first gear 140. A spiral spring 144 is installed between the second gear 143 and the screw rod 112. One end of the spiral spring 144 is connected to the inner wall of the second gear 143, and the other end of the spiral spring 144 is connected to the screw rod 112.

[0040] It should be noted that the first gear 140 , the second gear 143 and the third gear 151 are all configured as umbrella-shaped gears.

[0041] It should be noted that the portion of the screw rod 112 passing through the drilling tube 113 is configured to be flat.

[0042] See Figure 2 , Figure 3 , Figure 4 , Figure 8 and Fig. 9 In a specific implementation, during the process of the drilling cylinder 113 drilling into the wall through the screw rod 112, the drilling cylinder 113 moves toward the wall. At the same time, during the rotation of the screw rod 112, since the vortex spring 144 is installed between the second gear 143 and the screw rod 112, the screw rod 112 first rotates with the vortex spring 144 during its rotation. Therefore, the vortex spring 144 changes from a normal state to a tightened state. When the drilling cylinder 113 reaches the bottom side of the insulation layer, the screw rod 112 stops rotating. At this time, the vortex spring 144 in the tightened state is released and drives the second gear 143 to rotate.

[0043] See Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7 In a specific implementation, since the second gear 143 is meshed with the first gear 140 and the third gear 151 for transmission, the gear plate 131 is rotated by the first gear 140, so that the sliding column 134 slides from one end of the track groove 133 to the other end. Therefore, the sliding column 134 drives the clamping plate 132 to close by using the connecting rod 135, so that the clamping plate 132 clamps the insulation layer inside it. The surface of the insulation layer is wrapped as much as possible through the setting of the clamping plate 132, so that the insulation layer can be taken out smoothly.

[0044] See Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7 In a specific implementation, a connecting column 220 is installed on the inner wall of the first gear 140, and a connecting groove 210 for limiting the rotation angle of the first gear 140 is opened on the surface of the screw rod 112. The connecting groove 210 is set as an arc groove, and the connecting column 220 and the connecting groove 210 are slidably matched. When the volute spring 144 drives the second gear 143 to rotate through the release force, the first gear 140 is restricted due to the cooperation between the connecting column 220 and the connecting groove 210. The first gear 140 uses the transmission between the second gear 143 to initially release the volute spring 144.

[0045] See Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7 In specific implementation, when the drilling tube 113 needs to be separated from the wall, the screw rod 112 rotates, so the screw rod 112 cooperates with the tightened spiral spring 144, so that the spiral spring 144 changes from the tightened state to the normal state. After the drilling tube 113 falls off the wall, the screw rod 112 continues to rotate, so that the spiral spring 144 in the normal state changes to the expanded state. When the screw rod 112 stops rotating, the expanded spiral spring 144 drives the second gear 143 to rotate, so that the second gear 143 drives the first gear 140 to rotate through the third gear 151, so the gear plate 131 rotates, causing the sliding column 134 to reset along the track of the track groove 133. Therefore, the sliding column 134 drives the clamping plate 132 to open by using the connecting rod 135, and the clamping plate 132 loses its clamping of the thermal insulation layer inside it, thereby facilitating the removal of the drilled thermal insulation layer.

[0046] See Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7A piston cylinder 160 is installed on the upper side of the first gear 140, and a first threaded section 161 is opened on the surface of the piston cylinder 160. A sliding plate 162 is slidably installed inside the piston cylinder 160, and the sliding plate 162 is threadedly matched with the first threaded section 161. A first air bag 163 for wrapping the clamping plate 132 is installed inside the drilling cylinder 113, and a connecting pipe 164 for gas circulation is installed between the first air bag 163 and the piston cylinder 160.

[0047] See Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7 In a specific implementation, during the rotation of the screw rod 112, the sliding plate 162 cooperates with the first threaded section 161, so that the sliding plate 162 moves inside the piston cylinder 160. During the movement of the sliding plate 162, the gas inside the piston cylinder 160 is pushed. Since a connecting tube 164 is provided, the gas inside the piston cylinder 160 reaches the first airbag 163 through the connecting tube 164, so that the first airbag 163 can squeeze the end of the clamping plate 132, further improving the reliable clamping of the thermal insulation layer, effectively realizing the automation of the clamping of the thermal insulation layer, and ensuring that the thermal insulation layer falls off from the wall after drilling, further improving the reliability of obtaining the thickness of the thermal insulation layer.

[0048] In the present embodiment: in the process of drilling the insulation layer, the insulation layer is clamped by the cooperation between the first gear, the second gear, the third gear and the spiral spring, and the forward and reverse driving of the screw rod, so that the drilled insulation layer and the wall surface can fall off smoothly. After the insulation layer and the wall surface fall off, the clamping of the insulation layer can be automatically lost, so that the insulation layer and the drilling tube 113 fall off smoothly, and the automation of the clamping of the insulation layer is effectively realized; at the same time, through the sliding cooperation between the sliding plate 162 and the first threaded section 161, the gas inside the piston tube 160 can push the first airbag 163 through the connecting tube 164, so that the first airbag 163 squeezes the end of the clamping plate 132, so as to realize reliable clamping of the insulation layer.

[0049] Embodiment 3: This embodiment is intended to facilitate the solution of the problem of making it easier for the operator to remove the inner insulation layer of the drilling tube 113. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-Figure 9A support rod 170 is installed at the bottom of the support plate 130, a connecting plate 171 is installed at the end of the support rod 170, a second threaded section 172 is provided on the surface of the support rod 170, and a sliding block 173 is slidably installed on the surface of the support rod 170. The sliding block 173 is threadedly matched with the second threaded section 172, a push plate 174 for pushing out the insulation layer is installed at the bottom of the sliding block 173, and a vertical rod 175 for connection is installed between the push plate 174 and the sliding block 173.

[0050] It should be noted that the second thread segment 172 is opposite to the thread of the screw rod 112 .

[0051] See Figure 2 In specific implementation, during the reversal of the screw rod 112, the sliding block 173 cooperates with the second threaded segment 172 to drive the pushing plate 174 to move downward. When the insulation layer falls off the wall, at the same time, the bottom side of the pushing plate 174 contacts the upper side of the insulation layer. As the screw rod 112 continues to rotate, the pushing plate 174 pushes the end of the insulation layer to extend out of the drilling tube 113, making it faster for the operator to take the insulation layer.

[0052] In this embodiment: the reverse driving of the screw rod 112 drives the sliding block 173 and the second threaded section 172 to push the plate 174 downward. During the process, the bottom side of the pushing plate 174 can contact the upper side of the insulation layer. When the insulation layer falls off the wall, the pushing plate 174 continues to be affected by the rotation of the screw rod 112, and the end of the insulation layer can be extended out of the drilling tube 113, which is convenient for the operator to take the insulation layer. Moreover, through the reversal of the screw rod 112, the pushing plate 174 is automatically pushed out, so that the insulation layer can be smoothly taken out, simplifying the operation process.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A nondestructive testing device for the thickness of a building exterior wall insulation layer, comprising a support seat, characterized in that: A screw is rotatably installed inside the support seat, a driving structure for driving the screw to move is installed on the bottom side of the support seat, a drilling tube for drilling the insulation layer is installed on the bottom side of the screw, a clamping plate for clamping the insulation layer is installed inside the drilling tube, a gear plate for controlling the opening and closing of the clamping plate is installed on the surface of the screw, and a transmission component for controlling the rotation of the gear plate is installed on the surface of the screw; A support plate is installed on the bottom side of the screw rod, and a gear plate is rotatably installed on the upper side of the support plate. A track groove is opened on the surface of the gear plate, and a sliding column is slidably installed inside the track groove. A connecting rod for connecting with the clamping plate is installed on the bottom side of the sliding column; The transmission assembly includes a first gear mounted on the upper side of the gear plate, a second gear rotatably mounted on the surface of the screw rod, and a support frame rotatably mounted between the first gear and the second gear, a third gear rotatably mounted on the side of the support frame, and two sides of the third gear are respectively meshed with the second gear and the first gear; A spiral spring is installed between the second gear and the screw rod, one end of the spiral spring is connected to the inner wall of the second gear, and the other end of the spiral spring is connected to the screw rod. The second gear is meshed with the first gear and the third gear for transmission. The gear plate is rotated by the first gear, so that the sliding column slides from one end of the track groove to the other end, so that the sliding column drives the clamping plate to open and close by the connecting rod.

2. A nondestructive testing device for thickness of building exterior wall insulation layer according to claim 1, characterized in that: The driving structure includes a support plate installed on the bottom side of the support base, a driving gear and a driving motor respectively installed on both sides of the support plate, and a rotating gear installed on the bottom side of the support base, the rotating gear cooperates with the screw thread, the driving motor cooperates with the driving gear transmission, and the rotating gear meshes with the driving gear.

3. A nondestructive testing device for thickness of building exterior wall insulation layer according to claim 1, characterized in that: Several drill bits are hinged on the bottom side of the drill tube, and the drill bits are in an inclined state under normal conditions. A one-way torsion spring is installed between the drill bit and the drill tube. Scale lines for measuring the insulation layer are provided on the surface of the drill tube, and support feet for fitting against the wall are installed on the bottom side of the support seat.

4. A nondestructive testing device for thickness of building exterior wall insulation layer according to claim 1, characterized in that: A piston cylinder is installed on the upper side of the first gear, a first threaded section is provided on the surface of the piston cylinder, a sliding plate is slidably installed inside the piston cylinder, and the sliding plate is threadably matched with the first threaded section.

5. A nondestructive testing device for thickness of building exterior wall insulation layer according to claim 4, characterized in that: A first air bag for wrapping the clamping plate is installed inside the drilling cylinder, and a connecting pipe for gas circulation is installed between the first air bag and the piston cylinder.

6. A nondestructive testing device for thickness of building exterior wall insulation layer according to claim 1, characterized in that: A support rod is installed on the bottom side of the support plate, a connecting plate is installed on the end of the support rod, a second threaded section is opened on the surface of the support rod, and a sliding block is slidably installed on the surface of the support rod.

7. A nondestructive testing device for thickness of building exterior wall insulation layer according to claim 6, characterized in that: The sliding block is threadably matched with the second thread section, a pushing plate for pushing out the thermal insulation layer is installed on the bottom side of the sliding block, and a vertical rod for connection is installed between the pushing plate and the sliding block.

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