Thermal insulation performance detection device for constructional engineering wall

Abstract

The invention relates to the field of constructional engineering detection, in particular to a constructional engineering wall thermal insulation performance detection device, and solves the problems that an existing device cannot well detect the thermal insulation performance of overlapped part walls, the detection effect is not accurate enough, and certain defects exist. The device comprises a detection box, the detection box comprises an upper cavity, a middle cavity and a lower cavity which are sequentially arranged from top to bottom, a telescopic supporting piece is arranged in the lower cavity, a clamping mechanism is arranged in the middle cavity, the clamping mechanism comprises an annular supporting plate fixedly arranged in the middle cavity, and the peripheral side of the annular supporting plate is in sealed connection with the inner wall of the middle cavity; a plurality of clamping plates are arranged above the annular supporting plate, the clamping plates are annularly arranged, sliding limiting mechanisms are arranged on the clamping plates, a control mechanism is arranged on one sliding limiting mechanism, and telescopic limiting parts are arranged between the adjacent clamping plates; according to the invention, the upper cavity and the lower cavity can be separated through the thermal insulation wallboard, and the two surfaces of the thermal insulation wallboard are not shielded, so that the thermal insulation performance of the thermal insulation wallboard can be detected more accurately.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering detection, and in particular to a device for detecting thermal insulation performance of a building engineering wall. Background Art

[0002] With the development of new building materials, new buildings have higher and higher requirements for thermal insulation performance. The thermal insulation performance of houses is an important indicator for evaluating the quality of buildings. Thermal insulation wall panels are a commonly used panel material in modern buildings. They generally use cement as a bonding material and industrial slag, fly ash, mesh cloth, foamed polystyrene particles, flame retardant materials, thermal insulation materials, etc. as additives. After uniform mixing, they are cast into shape and have good thermal insulation performance. After the production of thermal insulation wall panels is completed, the thermal insulation performance needs to be tested to ensure its thermal insulation performance.

[0003] At present, a method for detecting the thermal insulation performance of thermal insulation wall panels is to isolate two cavities through the thermal insulation wall panels, and to detect the thermal insulation performance of the thermal insulation wall panels by controlling and detecting the temperature changes in the two cavities. After searching, the Chinese utility model patent with the announcement number CN211235621U discloses a device for detecting the thermal insulation performance of building walls, including: a shell, which is a box structure; a first hydraulic cylinder, one end of which is fixedly arranged on the inner wall of the shell; a first sealing cover, which is a concave cavity structure with a low center and high surroundings; a second hydraulic cylinder, which is arranged opposite to the first hydraulic cylinder; a second sealing cover, which is a concave cavity structure with a low center and high surroundings; a heating rod, which is arranged in the first sealing cover; a first temperature sensor, which is arranged in the cavity of the first sealing cover; a second temperature sensor, which is arranged in the cavity of the second sealing cover; an air hole, which is arranged on the first sealing cover, and the air hole connects the cavity of the first sealing cover with the outside; an electromagnetic valve, which is arranged on the first sealing cover; and a controller. The principle of this utility model is to clamp the thermal insulation wall panel through the grooves on the first sealing cover and the second sealing cover, and to enhance the sealing effect by setting sealing rubber at the grooves. However, there are many overlapping parts between the wall and the first sealing cover and the second sealing cover. If there are quality problems in the overlapping part and the thermal insulation effect is poor, since this part is sealed by the groove and the sealing rubber, during the overall detection, the overall thermal insulation effect will still be detected to be good, that is, the device cannot well detect the thermal insulation performance of the overlapping part of the wall, which will lead to inaccurate overall detection results and certain defects.

[0004] Therefore, the present invention provides a device for detecting thermal insulation performance of a building wall to solve the above-mentioned problem. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a device for detecting the thermal insulation performance of the wall of a construction project to solve the problem that the above-mentioned existing devices cannot well detect the thermal insulation performance of the overlapping part of the wall, the detection effect is not accurate enough, and there are certain defects.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: A device for detecting the thermal insulation performance of a wall of a building project comprises a detection box, wherein the detection box comprises an upper cavity, a middle cavity and a lower cavity which are arranged in sequence from top to bottom, a telescopic support piece is arranged in the lower cavity, a clamping mechanism is arranged in the middle cavity, and the clamping mechanism comprises an annular support plate fixedly arranged in the middle cavity, the circumference of the annular support plate is sealed and connected to the inner wall of the middle cavity, a plurality of clamping plates are arranged above the annular support plate, the plurality of clamping plates are arranged in a ring, and the clamping plates are provided with a sliding limit mechanism, one of the sliding limit mechanisms is provided with a control mechanism, and a telescopic limit piece is provided between adjacent clamping plates, the sliding limit mechanism is controlled by the control structure to drive the plurality of clamping plates to move inward or downward synchronously, and when the plurality of clamping plates move inward until they contact adjacent clamping plates, the plurality of clamping plates form a ring which is adapted to the thermal insulation wall, and the inner side of the clamping plate is staggered with the annular support plate, and the outer side overlaps with the annular support plate.

[0007] Preferably, an annular mounting plate is provided on the top of the annular support plate, and the sliding limiting mechanism includes a sliding groove arranged on the annular mounting plate along the vertical direction, a sliding piece sliding along the inward and outward directions is provided in the sliding groove, a connecting piece is slidably sleeved on the sliding piece, and the connecting piece is connected to the splint.

[0008] Preferably, the control mechanism includes a fixed plate fixedly arranged on the top of the slide groove, a screw rod is threadedly penetrated on the fixed plate, the bottom of the screw rod is rotatably connected to the slide, a first turning handle is provided on the top, a first limit spring is provided between the first turning handle and the fixed plate, a turning rod is rotatably penetrated on the slide, a gear is provided at the bottom of the turning rod, a rack is provided along the inward and outward directions on the connecting member, the rack is meshingly connected with the gear, a second turning handle is provided on the top of the turning rod, and a second limit spring is provided between the second turning handle and the slide.

[0009] Preferably, the connecting piece is hinged to the clamping plate, and the hinge axis is along the horizontal direction and perpendicular to the inner and outer directions.

[0010] Preferably, the telescopic support member includes an outer sleeve and an inner sleeve slidably connected, a third limit spring is provided at the bottom of the inner sleeve, a lifting plate is connected to the bottom of the third limit spring, a positioning slot is provided on the circumference of the lifting plate, a positioning hole matched with the positioning slot is provided on the outer sleeve, a sliding rod along the inward and outward directions is provided on the circumference of the outer sleeve, a sliding block is slidably provided on the sliding rod, a plug rod matched with the positioning slot and the positioning hole is provided toward the inside of the sliding block, and a fourth limit spring is provided between the outer sleeve and the outer sleeve, a pressure block is provided on the top of the sliding block, the top of the pressure block is inclined inwardly from top to bottom, and a pressure plate matched with the pressure block is provided at the bottom of the splint, and when a number of splints move inwardly to contact adjacent splints, the pressure plate corresponds to the pressure block.

[0011] Preferably, the telescopic support member is an electric telescopic rod.

[0012] Preferably, a support frame is provided on the periphery of the top of the telescopic support member.

[0013] Preferably, the annular support plate is detachably connected to the middle cavity, the clamping plate is detachably connected to the connecting piece, and there are also multiple groups of clamping plates of different specifications.

[0014] Preferably, the detection box is provided with an observation window.

[0015] Preferably, the annular support plate and the clamping plate are wrapped with a heat-insulating rubber layer.

[0016] The beneficial effects of the present invention are: 1. When the present invention is in use, the thermal insulation wall panel to be tested is first placed on the telescopic support member, and then the plurality of clamps are controlled to move from outside to inside through the sliding limit mechanism and the control mechanism until the plurality of clamps clamp the thermal insulation wall panel and the adjacent clamps are in close contact, and then the plurality of clamps are controlled to move downward until the plurality of clamps are in close contact with the annular support plate, and the telescopic support member is controlled to shorten and no longer in contact with the thermal insulation wall panel. At this time, the upper cavity and the lower cavity are separated by the thermal insulation wall panel, and the two sides of the thermal insulation wall panel are not blocked, so that the thermal insulation performance can be detected more accurately.

[0017] 2. When operating the present invention, it is only necessary to operate the control mechanism to control the simultaneous movement of multiple clamps. When the multiple clamps are clamping the insulation wall panels, the positions of the insulation wall panels can also be corrected. When placing the insulation wall panels, there is no need for precise placement, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the internal structure of the middle cavity in the present invention; Figure 3 It is a structural schematic diagram of the clamping mechanism in the present invention; Figure 4 for Figure 3 The enlarged schematic diagram of point A in the middle; Figure 5 It is a structural schematic diagram of the control mechanism in the present invention; Figure 6 It is a schematic diagram of the splint moving relative to the connecting member in the present invention; Figure 7 It is a schematic diagram of adjacent splints in contact with each other in the present invention; Figure 8 It is a schematic diagram of the structure of the telescopic support member in the present invention; Fig. 9 It is a schematic diagram of the connection between the clamping plate and the pressing plate in the present invention.

[0019] In the figure: 1. lower cavity, 2. middle cavity, 3. upper cavity, 4. annular mounting plate, 5. annular support plate, 6. telescopic limit member, 7. splint, 8. support frame, 9. telescopic support member, 901. inner sleeve, 902. outer sleeve, 903. third limit spring, 904. lifting plate, 905. slide rod, 906. plug rod, 907. slider, 908. pressure block, 909. fourth limit spring, 910. pressure plate, 10. slide groove, 11. connecting member, 12. slide member, 13. fixed plate, 14. first rotating handle, 15. screw rod, 16. first limit spring, 17. second rotating handle, 18. second limit spring, 19. rotating rod, 20. hinge seat, 21. hinge rod, 22. gear, 23. rack. DETAILED DESCRIPTION

[0020] The following will refer to the attached Figures 1 to 9 The embodiments of the present invention are described in detail. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0021] A device for detecting thermal insulation performance of building engineering walls, as shown in the attached Figure 1 , Figure 2 As shown, the detection box includes an upper cavity 3, a middle cavity 2 and a lower cavity 1 which are arranged in sequence from top to bottom. The upper cavity 3, the middle cavity 2 and the lower cavity 1 all include side panels. A top plate is arranged on the top of the upper cavity 3, and a bottom plate is arranged on the bottom of the lower cavity 1. When the three are connected, a sealed box is formed, wherein the upper cavity 3 can be detached from the middle cavity 2, so that the inside of the detection box can be operated. This part is the existing technology and will not be elaborated here.

[0022] As attached Figure 2 , Figure 3 , Figure 7As shown, a telescopic support member 9 is provided in the lower cavity 1, and the telescopic support member 9 is telescopic in the vertical direction. Specifically, the telescopic support member 9 can adopt an electric telescopic rod, and a support frame 8 is provided on the top of the telescopic support member 9. A clamping mechanism is provided in the middle cavity 2, and the clamping mechanism includes an annular support plate 5 fixedly arranged in the middle cavity 2. The annular support plate 5 is in a square frame shape and is used to clamp the square frame-shaped insulation wall panel. The circumference of the annular support plate 5 is sealed and connected to the inner wall of the middle cavity 2. A plurality of splints 7 are provided above the annular support plate 5, and the plurality of splints 7 are arranged in a ring. In this embodiment, a total of four splints 7 are arranged, and the four splints 7 have the same shape and size and are symmetrical in pairs. The splint 7 is in an isosceles trapezoid, the upper base is shorter than the lower base, the upper base is arranged toward the inside, and the angle between the lower base and the waist is 45°, so that when the four splints 7 are close to each other, a square frame shape can be formed.

[0023] The clamping plate 7 is provided with a sliding limit mechanism, which limits the movement direction of the clamping plate 7 so that the clamping plate 7 can only move in the inner and outer directions or in the upper and lower directions. In conjunction with the telescopic limit piece 6 provided between adjacent clamping plates 7, the four clamping plates 7 can be controlled to move synchronously when approaching each other to form a square frame shape.

[0024] A control mechanism is provided on one of the sliding limit mechanisms, which is used to control the movement of a clamping plate 7, so that the clamping plates 7 move inward or downward synchronously. When the four clamping plates 7 move inward until they contact the adjacent clamping plates 7 and the four clamping plates 7 form a square frame, the square frame shape is adapted to the insulation wall, and the inner side of the clamping plate 7 is staggered with the annular support plate 5, that is, the upper bottom of the clamping plate 7 is closer to the inside than the inner wall corresponding to the annular support plate 5, and the outer side of the clamping plate 7 coincides with the annular support plate 5, that is, the lower bottom of the clamping plate 7 is located above the annular support plate 5.

[0025] When in use, first separate the upper cavity 3 from the middle cavity 2 to expose the middle cavity 2 and the lower cavity 1, then place the insulation wall panel to be tested on the telescopic support 9 and the support frame 8, then control the four clamps 7 to move inwards through the control mechanism, so that the four clamps 7 move inwards synchronously until the four clamps 7 clamp the insulation wall panel and the adjacent clamps 7 are in close contact, then control the four clamps 7 to move downwards synchronously until the four clamps 7 are in close contact with the annular support plate 5, and control the telescopic support 9 to move inwards synchronously. 9 is shortened and no longer contacts the thermal insulation wall panel. Finally, the upper cavity 3 is connected to the middle cavity 2. At this time, the upper cavity 3 is separated from the lower cavity 1 by the thermal insulation wall panel, and the two sides of the thermal insulation wall panel are not blocked, so that the thermal insulation performance can be detected more accurately. In this embodiment, only the control mechanism needs to be operated to control the movement of multiple clamps 7 at the same time. When the multiple clamps 7 are clamped to the thermal insulation wall panel, the position of the thermal insulation wall panel can be corrected. When placing the thermal insulation wall panel, there is no need to place it accurately, and the operation is convenient.

[0026] In addition, it should be noted that, in specific use, a heating device and a detection device are required to be provided in the upper and lower spaces separated by the thermal insulation wall panel, the plywood 7 and the annular support plate 5. The heating device can be an electric heating wire, and the detection device can be a temperature detector. Specifically, a heating device and a detection device can be provided in the lower cavity 1 to control the temperature in the lower cavity 1, and a detection device can be provided in the space shared by the middle cavity 2 and the upper cavity 3 to detect the temperature of the space, thereby realizing the thermal insulation performance of the thermal insulation wall panel by observing the temperature change; in addition, the heating device and the detection device can be pre-fixed in the corresponding space, or can be a split design and placed during detection. When a split design is adopted, it is more convenient to take out the corresponding device when observing at any time, and it is convenient for maintenance. In addition, an observation window (not shown in the figure) is provided on the detection box, or the detection box is made of a certain transparent material, and during detection, the inside of the detection box can be directly observed from the outside.

[0027] In addition, it should be noted that the cross-section of the thermal insulation wall panel tested in this embodiment is smaller than the hollow portion formed in the middle of the annular support plate 5 .

[0028] As attached Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 As shown, in this embodiment, an annular mounting plate 4 is provided on the top of the annular support plate 5, and the annular mounting plate 4 is fixed relative to the middle cavity 2. The sliding limiting mechanism includes a slide groove 10 arranged on the annular mounting plate 4 along the vertical direction. A slide 12 is provided in the slide groove 10 along the inward and outward direction. The slide 12 can move in the up and down directions. A connecting member 11 is slidably sleeved on the slide 12. The connecting member 11 can move in the inward and outward directions. The connecting member 11 is connected to the splint 7, and thus the splint 7 can only move up and down and inward and outward through the slide 12 and the connecting member 11.

[0029] As attached Figure 3 , Figure 4 , Figure 5As shown, in this embodiment, the control mechanism includes a fixed plate 13 fixedly arranged on the top of the slide groove 10, and a screw rod 15 is threadedly penetrated on the fixed plate 13. The screw rod 15 is vertically connected to the slide 12 at the bottom of the screw rod 15, and a first rotating handle 14 is provided on the top. A first limit spring 16 is provided between the first rotating handle 14 and the fixed plate 13. When the first rotating handle 14 rotates, the screw rod 15 is driven to rotate, and the screw rod 15 is driven to move up and down along the fixed plate 13, thereby driving the slide 12 to move up and down, and then driving the connecting member 11 to move up and down. Movement, a rotating rod 19 is rotatably penetrated on the slide 12, a gear 22 is provided at the bottom of the rotating rod 19, a groove is provided on the connecting member 11, and a rack 23 along the inward and outward directions is provided through the groove, the rack 23 is meshed and connected with the gear 22, a second rotating handle 17 is provided on the top of the rotating rod 19, and a second limiting spring 18 is provided between the second rotating handle 17 and the slide 12. When the second rotating handle 17 rotates, it drives the rotating rod 19 to rotate, and then drives the gear 22 to rotate, and then drives the rack 23 to move in the front-back direction, and then drives the connecting member 11 to move in the front-back direction.

[0030] During specific use, the second turning handle 17 is first used to drive the connecting piece 11 to move inward, and then the four clamping plates 7 are driven to move inward to clamp the thermal insulation wall panel. Subsequently, the first turning handle 14 is controlled to drive the connecting piece 11 to move downward, and a certain limiting effect is played by the corresponding limit spring to prevent the turning handle from rotating on its own. In addition, during specific use, in order to overcome the pressure of the limit spring, the turning handle can be rotated by a certain tool, such as a cross groove is provided on the turning handle, and the rotation is assisted by a cross tool, or a control motor is added to the turning handle.

[0031] As attached Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, in this embodiment, the connecting member 11 is hinged to the splint 7, and the hinge axis is in the horizontal direction and perpendicular to the inner and outer directions. Specifically, a hinge seat 20 is provided on the connecting member 11 and the splint 7, and a hinge axis is provided on the hinge seat 20. A hinge rod 21 is provided between the two hinge axes, and the splint 7 can be controlled to move inward and upward relative to the connecting member 11 through the hinge. When used, the splint 7 is first rotated inwardly to the innermost position, and the splint 7 is in the highest position relative to the connecting member 11. Since adjacent splints 7 are connected by telescopic limiters 6, the splint 7 is always in the horizontal position. The specific state can be referred to in the attached drawing. Figure 6 As shown, the thermal insulation wall panel can then be clamped and moved by controlling the second rotating handle 17 and the first rotating handle 14.

[0032] In this embodiment, after the insulation wall panel is finally fixed, when there is a tendency of relative displacement between the insulation wall panel and the clamping plate 7, first, the clamping plate 7 has a tendency to move outward, and at the same time, the clamping plate 7 has a tendency to move downward, and then the clamping plate 7 further touches the annular support plate 5, so that the two are tightly attached to avoid displacement, thereby making the clamping of the insulation wall panel more stable.

[0033] In addition, in this embodiment, the annular support plate 5 and the clamping plate 7 can be wrapped with an insulating rubber layer to facilitate the sealing between the structures; the annular support plate 5 is detachably connected to the middle cavity 2, and the clamping plate 7 is detachably connected to the connecting piece 11, and also includes a plurality of groups of clamping plates 7 of different specifications. When in specific use, the annular support plate 5 can be removed and the clamping plate 7 can be replaced, thereby meeting the detection and use of insulation wall panels of different specifications, and the use is more flexible. Embodiment 2

[0034] As attached Figure 8 , Fig. 9 As shown, the difference between this embodiment and the first embodiment lies in the structure of the telescopic support member 9. In this embodiment, the telescopic support member 9 includes an outer sleeve 902 and an inner sleeve 901 which are slidably connected. The outer sleeve 902 is fixedly arranged and telescopically extended by the lifting and lowering of the inner sleeve 901. A third limit spring 903 is arranged at the bottom of the inner sleeve 901. A lifting plate 904 is connected to the bottom of the third limit spring 903. The lifting and lowering of the lifting plate 904 drives the lifting and lowering of the inner sleeve 901. Positioning slots are arranged on the periphery of the lifting plate 904. In this embodiment, there are four positioning slots. The outer sleeve 902 is provided with a third limit spring 903 which is connected to the positioning slots. There are four positioning holes adapted to the groove, and four sliding rods 905 are correspondingly provided on the circumference of the outer sleeve 902 along the inward and outward directions. A slider 907 is slidably provided on the sliding rod 905. The slider 907 is provided with an insertion rod 906 adapted to the positioning slot and the positioning hole facing inward, and a fourth limit spring 909 is provided between the slider 907 and the outer sleeve 902. A pressure block 908 is provided on the top of the slider 907, and the top of the pressure block 908 is inclined inward from top to bottom. A pressure plate 910 adapted to the pressure block 908 is provided at the bottom of the splint 7. When several splints 7 move inward to contact adjacent splints 7, the pressure plate 910 corresponds to the pressure block 908.

[0035] When in use, before placing the insulation wall panel, first manually raise the inner sleeve 901 so that the insertion rod 906 is inserted into the positioning socket. At this time, the height of the lifting plate 904 is determined. When the clamping plate 7 clamps the insulation wall panel and moves downward, it drives the pressing plate 910 to move downward. At the same time, the insulation wall panel pushes the inner sleeve 901 to move downward, and the third limit spring 903 is compressed. When the pressing plate 910 contacts the pressing block 908, it drives the pressing block 908 to move outward, and the pressing block 908 drives the insertion rod 906 out of the positioning The lifting plate 904 is no longer positioned by the insertion rod 906, and the lifting plate 904 descends, thereby driving the inner sleeve 901 to descend, and finally separating the inner sleeve 901 from the insulation wall panel and no longer contacting the insulation wall panel. Therefore, when testing the insulation performance of the insulation wall panel, the upper and lower sides of the insulation wall panel are unobstructed. In this embodiment, the telescopic support member 9 can be automatically separated from the insulation wall panel while controlling the movement of the insulation wall panel. Compared with electric control, the operation is more convenient and there will be no missed operation.

[0036] In addition, it should be noted that in the present embodiment, when the lifting plate 904 descends, the third limit spring 903 will stretch and reset. In actual production, the height of the space below the lifting plate 904 needs to be greater than the height to which the inner sleeve 901 initially descends, so that after the lifting plate 904 descends, the outer sleeve 902 does not contact the insulation wall panel.

[0037] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A device for detecting thermal insulation performance of a building wall, comprising a detection box, wherein the detection box comprises an upper cavity (3), a middle cavity (2) and a lower cavity (1) arranged in sequence from top to bottom, characterized in that: A telescopic support member (9) is provided in the lower cavity (1), and a clamping mechanism is provided in the middle cavity (2). The clamping mechanism comprises an annular support plate (5) fixedly arranged in the middle cavity (2), the circumference of the annular support plate (5) being sealedly connected to the inner wall of the middle cavity (2), a plurality of clamping plates (7) being provided above the annular support plate (5), the plurality of clamping plates (7) being arranged in an annular pattern, the clamping plates (7) being provided with a sliding limit mechanism, one of the sliding limit mechanisms being provided with a control mechanism, and a telescopic limit member (6) being provided between adjacent clamping plates (7), the sliding limit mechanism being controlled by the control structure to drive the plurality of clamping plates (7) to move inward or downward synchronously, and when the plurality of clamping plates (7) move inward until they contact adjacent clamping plates (7), the plurality of clamping plates (7) form an annular shape adapted to the thermal insulation wall, and the inner side of the clamping plate (7) is staggered from the annular support plate (5), and the outer side of the clamping plate (7) is overlapped with the annular support plate (5).

2. A construction engineering wall thermal insulation performance detection device according to claim 1, characterized in that: An annular mounting plate (4) is provided on the top of the annular support plate (5), and the sliding limit mechanism comprises a slide groove (10) arranged on the annular mounting plate (4) along the vertical direction, a slide member (12) is slidably arranged in the slide groove (10) along the inward and outward directions, a connecting member (11) is slidably sleeved on the sliding member (12), and the connecting member (11) is connected to the clamping plate (7).

3. A construction engineering wall thermal insulation performance detection device according to claim 2, characterized in that: The control mechanism comprises a fixed plate (13) fixedly arranged on the top of the slide groove (10), a screw rod (15) being threadedly penetrated on the fixed plate (13), the bottom of the screw rod (15) being rotatably connected to the slide member (12), a first rotating handle (14) being provided on the top, a first limit spring (16) being provided between the first rotating handle (14) and the fixed plate (13), a rotating rod (19) being rotatably penetrated on the slide member (12), a gear (22) being provided at the bottom of the rotating rod (19), a rack (23) being provided along the inner and outer directions on the connecting member (11), the rack (23) being meshingly connected with the gear (22), a second rotating handle (17) being provided on the top of the rotating rod (19), a second limit spring (18) being provided between the second rotating handle (17) and the slide member (12).

4. A construction engineering wall thermal insulation performance detection device according to claim 1, characterized in that: The connecting piece (11) is hinged to the clamping plate (7), and the hinge axis is along the horizontal direction and perpendicular to the inner and outer directions.

5. A construction engineering wall thermal insulation performance detection device according to claim 1, characterized in that: The telescopic support member (9) comprises an outer sleeve (902) and an inner sleeve (901) which are slidably connected, a third limit spring (903) is provided at the bottom of the inner sleeve (901), a lifting plate (904) is connected to the bottom of the third limit spring (903), a positioning slot is provided on the circumference of the lifting plate (904), a positioning hole adapted to the positioning slot is provided on the outer sleeve (902), a sliding rod (905) is provided along the inner and outer directions on the circumference of the outer sleeve (902), and a sliding rod (905) is slidably provided on the sliding rod (905). The slider (907) is provided with an insertion rod (906) adapted to the positioning slot and the positioning socket facing inward, and a fourth limit spring (909) is provided between the slider (907) and the outer sleeve (902). A pressure block (908) is provided at the top of the slider (907), and the top of the pressure block (908) is inclined inward from top to bottom. A pressure plate (910) adapted to the pressure block (908) is provided at the bottom of the clamping plate (7). When a plurality of clamping plates (7) move inwardly to contact adjacent clamping plates (7), the pressure plate (910) corresponds to the pressure block (908).

6. A construction engineering wall thermal insulation performance detection device according to claim 1, characterized in that: The telescopic support member (9) is an electric telescopic rod.

7. A construction engineering wall thermal insulation performance detection device according to claim 1, characterized in that: A support frame (8) is provided on the periphery of the top of the telescopic support member (9).

8. A construction engineering wall thermal insulation performance detection device according to any one of claims 1 to 7, characterized in that: The annular support plate (5) is detachably connected to the middle cavity (2), and the clamping plate (7) is detachably connected to the connecting piece (11), and also includes a plurality of groups of clamping plates (7) of different specifications.

9. A construction engineering wall thermal insulation performance detection device according to any one of claims 1 to 7, characterized in that: The detection box is provided with an observation window.

10. A construction engineering wall thermal insulation performance detection device according to any one of claims 1 to 7, characterized in that: The annular support plate (5) and the clamping plate (7) are wrapped with a heat-insulating rubber layer.

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