A device for detecting thermal defects of building walls

Abstract

The present invention discloses a thermal defect detection device for building walls, belonging to the technical field of thermal detection. It includes a temperature detection mechanism for detecting the temperature of the wall. A support mechanism and a heating mechanism for heating the wall are arranged on the temperature detection mechanism, and the support mechanism is used to support the heating pad on the wall surface. In the present invention, the support head extends out, tightly presses the heating pad on the building wall, and conducts heat to the wall through the heating pad. The infrared temperature measurement head is used to measure the temperature of the heating pad and the wall, and obvious temperature differences will be reflected in the displayed infrared image. The location of the defect can be accurately judged according to the infrared image. The support head and the inner detection rod in the present invention extend out in a multi-stage extension manner, so that the extension distance of the support head is increased, and the support head and the heating pad can extend far enough in cooperation with the retractable heating pad, enabling the detection device to detect the wall surface of a larger room and having a wide detection range.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal engineering detection, and particularly relates to a device for detecting thermal defects of building walls. Background Art

[0002] Building thermal testing is a test of physical parameters such as indoor and outdoor heat, humidity, and thermal environment. The test contents include but are not limited to temperature, humidity, wind speed, heat flux, micro air pressure, etc. These parameters can comprehensively evaluate a building; among them, temperature measurement includes tests such as fixed indoor and outdoor temperature differences and indoor heat preservation effects. Such temperature tests can directly reflect whether a building is suitable for living. Too low temperature differences and poor heat preservation effects must be repaired before it can be delivered for living. The existing building wall thermal defect detection devices only use infrared detectors to detect the wall surface, and can only observe the current wall temperature situation, without the process of temperature rise and fall or comparison, and the detection effect is poor. Summary of the Invention

[0003] In view of the above technical problems, the technical solution adopted by the present invention is: a device for detecting thermal defects of building walls, including a temperature detection mechanism for detecting the temperature of the wall. The temperature detection mechanism includes a main body shell, and a plurality of protruding frames are fixedly installed on the main body shell. A support mechanism and a heating mechanism for heating the wall are arranged on the temperature detection mechanism. The support mechanism includes a plurality of ball head rods, and the ball head rods are fixedly installed in the main body shell. The heating mechanism includes a heating pad, and the support mechanism is used to support the heating pad on the wall surface.

[0004] Further, the temperature detection mechanism includes a double-threaded column rotatably installed in the main body shell. The double-threaded column is provided with two sections of threads. An upper sliding disk and a lower sliding disk are slidably installed in the main body shell. The upper sliding disk and the lower sliding disk respectively form a screw drive with the two sections of threads of the double-threaded column. When the double-threaded column rotates, the upper sliding disk and the lower sliding disk move inward or outward simultaneously. A central gear is fixedly installed on the double-threaded column, and an intermediate spring is arranged between the upper sliding disk and the lower sliding disk.

[0005] Further, a control module is arranged on the main body shell, and a motor is fixedly installed on the main body shell. A motor gear is fixedly installed on the motor shaft of the motor. An external gear is rotatably installed on the main body shell. The external gear meshes with the motor gear. A vertical gear shaft is rotatably installed in the main body shell. An upper gear and a lower gear are fixedly installed on the vertical gear shaft. A transmission belt is wound around the lower gear and the external gear, and the upper gear meshes with the central gear.

[0006] Further, an upper rotating rod is rotatably installed on the upper sliding disc, a lower rotating rod is rotatably installed on the lower sliding disc, four infrared temperature sensors are slidably installed on the main body housing, the infrared temperature sensors are rotatably installed on the upper rotating rod, the infrared temperature sensors are rotatably installed on the lower rotating rod, and the infrared temperature sensors are electrically connected to an external display.

[0007] During use, place the device in the room where the wall to be measured is located. In the initial state, the extending frame catches the limiting ring. Send an opening instruction to the motor through the control module. The motor drives the motor gear to rotate, thereby driving the outer gear to rotate. Drive the lower gear, vertical gear shaft and upper gear to rotate through the transmission belt, thereby driving the central gear and the double-threaded column to rotate. The rotation of the double-threaded column drives the upper sliding disc to move downward, and the lower sliding disc to move upward. The middle spring is compressed. The upper sliding disc and the lower sliding disc respectively push the lifting cylinder to rotate around the ball head rod through the docking pressure plate, so that the extending frame no longer blocks the limiting ring. At the same time, the upper sliding disc descends, and the lower sliding disc ascends to drive the upper rotating rod and the lower rotating rod to rotate, thereby driving the infrared temperature sensors to extend out.

[0008] Further, the support mechanism includes a lifting cylinder rotatably installed on the ball head rod. A return spring is provided between the lifting cylinder and the main body housing, and a docking pressure plate is fixedly installed on the lifting cylinder.

[0009] Further, an outer sliding sleeve is slidably installed in the lifting cylinder, a middle sliding sleeve is slidably installed in the outer sliding sleeve, an inner sliding sleeve is slidably installed in the middle sliding sleeve, a limiting ring is fixedly installed on the inner sliding sleeve, an inner detection rod is fixedly installed on the limiting ring, a support head is fixedly installed on the inner detection rod, and a pop-up spring is provided between the limiting ring and the lifting cylinder. In the initial state, the extending frame is located outside the limiting ring, and the pop-up spring is in a compressed state.

[0010] When the lifting cylinder rotates relative to the ball head rod, the return spring is stretched. At this time, the extending frame is no longer located outside the limiting ring, and the pop-up spring rebounds, causing the inner sliding sleeve to slide outward relative to the middle sliding sleeve. When the inner sliding sleeve moves to the outermost position, it drives the middle sliding sleeve to slide outward relative to the outer sliding sleeve. When the middle sliding sleeve moves to the outermost position, it drives the outer sliding sleeve to slide outward relative to the lifting cylinder. At this time, the support head pops out to the farthest distance, and the heating pad is pushed against the wall by the support head. The heating pad generates heat and conducts the heat to the wall. The temperature of the heating pad is measured by the extended infrared temperature sensors, and the image is transmitted to the external display. Since the heat insulation performance of the defective part of the wall is poor, an obvious temperature difference will be reflected in the displayed image during infrared temperature measurement. The location of the defect can be accurately judged according to the infrared image.

[0011] Further, the heating mechanism includes four inner fixed shafts fixedly installed in the main body housing. A winding drum is rotatably installed outside the inner fixed shaft through a coil spring. One end of the heating pad is fixedly installed on the winding drum, and the other ends of the four heating pads are fixedly installed on the top of the main body housing.

[0012] When the supporting head presses the heating pad against the wall, the heating pad drives the winding drum to rotate, and the coil spring is twisted. After use, the supporting head is manually retracted, and the coil spring rebounds.

[0013] The beneficial effects of the present invention compared with the prior art are as follows: (1) The supporting head provided in the present invention extends out, presses the heating pad tightly against the building wall, conducts heat to the wall through the heating pad, and measures the temperature of the heating pad and the wall through the infrared temperature measuring head. An obvious temperature difference will be reflected in the displayed infrared image, and the location of the defect can be accurately judged according to the infrared image; (2) The supporting head and the internal detection rod provided in the present invention extend out in a multi-stage manner, so that the extending distance of the supporting head is increased, and the supporting head and the heating pad can extend far enough with the retractable heating pad, enabling the detection device to detect the wall surface of a larger room with a wide detection range; (3) When the temperature detection mechanism provided in the present invention is started, the supporting head protrudes and the infrared temperature measuring head protrudes, so that the device occupies a small space when not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the overall structure of the present invention (inside).

[0016] Figure 3 It is a schematic diagram of the structure of the temperature detection mechanism of the present invention Figure 1 .

[0017] Figure 4 It is a schematic diagram of the structure of the temperature detection mechanism of the present invention Figure 2 .

[0018] Figure 5 It is a schematic diagram of the structure of the support mechanism of the present invention Figure 1 .

[0019] Figure 6 It is a schematic diagram of the structure of the support mechanism of the present invention Figure 2 .

[0020] Figure 7 It is Figure 6 a partial enlarged schematic diagram of part A in

[0021] Figure 8 It is a schematic diagram of the structure of the support mechanism of the present invention Figure 3 .

[0022] Figure 9 It is a schematic diagram of the structure of the heating mechanism of the present invention Figure 1 .

[0023] Figure 10 It is a schematic diagram of the structure of the heating mechanism of the present invention Figure 2。

[0024] Reference numerals of the drawings: 101 - main body housing; 102 - extending bracket; 103 - double-threaded column; 104 - control module; 105 - upper sliding disk; 106 - lower sliding disk; 107 - upper rotating rod; 108 - lower rotating rod; 109 - infrared temperature measuring head; 110 - intermediate spring; 111 - motor; 112 - motor gear; 113 - outer gear; 114 - transmission belt; 115 - vertical gear shaft; 116 - upper gear; 117 - central gear; 118 - lower gear; 201 - ball head rod; 202 - lifting cylinder; 203 - return spring; 204 - docking pressure plate; 205 - inner detection rod; 206 - support head; 207 - outer layer sliding sleeve; 208 - middle layer sliding sleeve; 209 - inner layer sliding sleeve; 210 - ejecting spring; 211 - limit ring; 301 - heating pad; 302 - winding drum; 303 - inner fixed shaft; 304 - coil spring. Specific embodiments

[0025] The following further describes the specific embodiments of the present invention with reference to the drawings.

[0026] Embodiment: Refer to Figures 1 - 10 , a thermal defect detection device for building walls, including a temperature detection mechanism for detecting the temperature of the wall. The temperature detection mechanism includes a main body housing 101, and a plurality of extending brackets 102 are fixedly installed on the main body housing 101. A support mechanism and a heating mechanism for heating the wall are arranged on the temperature detection mechanism. The support mechanism includes a plurality of ball head rods 201, and the ball head rods 201 are fixedly installed in the main body housing 101. The heating mechanism includes a heating pad 301, and the support mechanism is used to support the heating pad 301 on the wall surface.

[0027] As Figure 3 、 Figure 4 shown, the temperature detection mechanism includes a double-threaded column 103 rotatably installed in the main body housing 101. The double-threaded column 103 is provided with two sections of threads. An upper sliding disk 105 and a lower sliding disk 106 are slidably installed in the main body housing 101. The upper sliding disk 105 and the lower sliding disk 106 respectively form a screw drive with the two sections of threads of the double-threaded column 103. When the double-threaded column 103 rotates, the upper sliding disk 105 and the lower sliding disk 106 move inward or outward simultaneously. A central gear 117 is fixedly installed on the double-threaded column 103, and an intermediate spring 110 is arranged between the upper sliding disk 105 and the lower sliding disk 106.

[0028] As Figure 3 、 Figure 4As shown in the figure, a control module 104 is provided on the main body shell 101. A motor 111 is fixedly installed on the main body shell 101. A motor gear 112 is fixedly installed on the motor shaft of the motor 111. An external gear 113 is rotatably installed on the main body shell 101. The external gear 113 meshes with the motor gear 112. A vertical gear shaft 115 is rotatably installed inside the main body shell 101. An upper gear 116 and a lower gear 118 are fixedly installed on the vertical gear shaft 115. A transmission belt 114 is wound around the lower gear 118 and the external gear 113. The upper gear 116 meshes with the central gear 117.

[0029] As Figure 3 , Figure 4 As shown in the figure, an upper rotating rod 107 is rotatably installed on the upper sliding disk 105. A lower rotating rod 108 is rotatably installed on the lower sliding disk 106. Four infrared temperature sensors 109 are slidably installed on the main body shell 101. The infrared temperature sensors 109 are rotatably installed with the upper rotating rod 107. The infrared temperature sensors 109 are rotatably installed with the lower rotating rod 108. The infrared temperature sensors 109 are electrically connected to an external display.

[0030] During use, the device is placed in the room where the wall to be measured is located. In the initial state, the extension frame 102 catches the limit ring 211. The control module 104 sends an opening instruction to the motor 111. The motor 111 drives the motor gear 112 to rotate, thereby driving the external gear 113 to rotate. The lower gear 118, the vertical gear shaft 115 and the upper gear 116 are driven to rotate through the transmission belt 114, thereby driving the central gear 117 and the double-threaded column 103 to rotate. The rotation of the double-threaded column 103 drives the upper sliding disk 105 to move downward and the lower sliding disk 106 to move upward. The middle spring 110 is compressed. The upper sliding disk 105 and the lower sliding disk 106 respectively push the lifting cylinder 202 to rotate around the ball head rod 201 through the docking pressure plate 204, so that the extension frame 102 no longer blocks the limit ring 211. At the same time, the upper sliding disk 105 descends and the lower sliding disk 106 ascends, driving the upper rotating rod 107 and the lower rotating rod 108 to rotate, thereby driving the infrared temperature sensors 109 to extend.

[0031] As Figures 5 - 8 As shown in the figure, the support mechanism includes a lifting cylinder 202 rotatably installed on the ball head rod 201. A return spring 203 is provided between the lifting cylinder 202 and the main body shell 101. A docking pressure plate 204 is fixedly installed on the lifting cylinder 202.

[0032] As Figures 5 - 8As shown, an outer sliding sleeve 207 is slidably installed inside the lifting cylinder 202. A middle sliding sleeve 208 is slidably installed inside the outer sliding sleeve 207. An inner sliding sleeve 209 is slidably installed inside the middle sliding sleeve 208. A limiting ring 211 is fixedly installed on the inner sliding sleeve 209. An inner detection rod 205 is fixedly installed on the limiting ring 211. A support head 206 is fixedly installed on the inner detection rod 205. A pop-up spring 210 is arranged between the limiting ring 211 and the lifting cylinder 202. In the initial state, the extension frame 102 is located outside the limiting ring 211, and the pop-up spring 210 is in a compressed state.

[0033] When the lifting cylinder 202 rotates relative to the ball head rod 201, the return spring 203 is stretched. At this time, the extension frame 102 is no longer located outside the limiting ring 211, and the pop-up spring 210 rebounds, causing the inner sliding sleeve 209 to slide outward relative to the middle sliding sleeve 208. When the inner sliding sleeve 209 moves to the outermost position, it drives the middle sliding sleeve 208 to slide outward relative to the outer sliding sleeve 207. When the middle sliding sleeve 208 moves to the outermost position, it drives the outer sliding sleeve 207 to slide outward relative to the lifting cylinder 202. At this time, the support head 206 pops out to the farthest position, and the heating pad 301 is pushed against the wall by the support head 206. The heating pad 301 generates heat and conducts the heat to the wall. The infrared temperature measuring head 109 that extends out measures the temperature of the heating pad 301 and transmits the image to an external display. Since the heat insulation performance of the defective part of the wall is poor, obvious temperature differences will be reflected in the displayed image during infrared temperature measurement. The location of the defect can be accurately judged according to the infrared image.

[0034] As Figure 9 、 Figure 10 As shown, the heating mechanism includes four inner fixed shafts 303 fixedly installed inside the main body shell 101. A winding drum 302 is rotatably installed outside the inner fixed shafts 303 through coil springs 304. One end of the heating pad 301 is fixedly installed on the winding drum 302, and the other ends of the four heating pads 301 are fixedly installed on the top of the main body shell 101.

[0035] When the support head 206 pushes the heating pad 301 against the wall, the heating pad 301 drives the winding drum 302 to rotate, and the coil spring 304 is twisted. When the use is completed, the support head 206 is manually retracted, and the coil spring 304 rebounds.

[0036] Working principle: When in use, place the device in the room where the wall to be measured is located. In the initial state, the extension frame 102 catches the limit ring 211. Send an opening instruction to the motor 111 through the control module 104. The motor 111 drives the motor gear 112 to rotate, thereby driving the outer gear 113 to rotate. Drive the lower gear 118, the vertical gear shaft 115, and the upper gear 116 to rotate through the transmission belt 114, thereby driving the central gear 117 and the double-threaded column 103 to rotate. The rotation of the double-threaded column 103 drives the upper sliding plate 105 to move downward and the lower sliding plate 106 to move upward. The middle spring 110 is compressed. The upper sliding plate 105 and the lower sliding plate 106 respectively push the lifting cylinder 202 to rotate around the ball head rod 201 through the docking pressure plate 204, so that the extension frame 102 no longer blocks the limit ring 211. At the same time, the upper sliding plate 105 descends and the lower sliding plate 106 ascends to drive the upper rotating rod 107 and the lower rotating rod 108 to rotate, thereby driving the infrared temperature measuring head 109 to extend. When the lifting cylinder 202 rotates relative to the ball head rod 201, the return spring 203 is stretched. At this time, the extension frame 102 is no longer outside the limit ring 211, and the pop-up spring 210 rebounds, causing the inner sliding sleeve 209 to slide outward relative to the middle sliding sleeve 208. When the inner sliding sleeve 209 moves to the outermost position, it drives the middle sliding sleeve 208 to slide outward relative to the outer sliding sleeve 207. When the middle sliding sleeve 208 moves to the outermost position, it drives the outer sliding sleeve 207 to slide outward relative to the lifting cylinder 202. At this time, the support head 206 pops out to the farthest distance, and the heating pad 301 is pushed against the wall by the support head 206. The heating pad 301 generates heat and conducts the heat to the wall. The infrared temperature measuring head 109 that extends measures the temperature of the heating pad 301 and transmits the image to an external display. Since the heat insulation performance of the defective part of the wall is poor, an obvious temperature difference will be reflected in the displayed image during infrared temperature measurement. The location of the defect can be accurately judged according to the infrared image. When the support head 206 pushes the heating pad 301 against the wall, the heating pad 301 drives the winding drum 302 to rotate, and the coil spring 304 is twisted. When the use is completed, manually retract the support head 206, and the coil spring 304 rebounds.

[0037] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope of the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A thermal defect detection device for a building wall, comprising a temperature detection mechanism for detecting the temperature of the wall, characterized in that: The temperature detection mechanism comprises a main body shell (101), a plurality of extension frames (102) are fixedly mounted on the main body shell (101), a support mechanism and a heating mechanism for heating a wall are arranged on the temperature detection mechanism, the support mechanism comprises a plurality of ball head rods (201), the ball head rods (201) are fixedly mounted in the main body shell (101), the heating mechanism comprises a heating pad (301), and the support mechanism is used to support the heating pad (301) on the wall surface; The temperature detection mechanism comprises a double-threaded column (103) rotatably mounted in a main body shell (101), the double-threaded column (103) being provided with two sections of threads, an upper sliding plate (105) and a lower sliding plate (106) being slidably mounted in the main body shell (101), the upper sliding plate (105) and the lower sliding plate (106) respectively forming a threaded transmission with the two sections of threads of the double-threaded column (103), when the double-threaded column (103) rotates, the upper sliding plate (105) and the lower sliding plate (106) move inward or outward at the same time, a central gear (117) is fixedly mounted on the double-threaded column (103), and an intermediate spring (110) is provided between the upper sliding plate (105) and the lower sliding plate (106); An upper rotating rod (107) is rotatably mounted on the upper sliding plate (105), a lower rotating rod (108) is rotatably mounted on the lower sliding plate (106), four infrared temperature measuring heads (109) are slidably mounted on the main body shell (101), the infrared temperature measuring heads (109) are rotatably mounted on the upper rotating rod (107), the infrared temperature measuring heads (109) are rotatably mounted on the lower rotating rod (108), and the infrared temperature measuring heads (109) are electrically connected to an external display.

2. A thermal defect detection device for a building wall according to claim 1, characterized in that: The main body shell (101) is provided with a control module (104); a motor (111) is fixedly mounted on the main body shell (101); a motor gear (112) is fixedly mounted on the motor shaft of the motor (111); an external gear (113) is rotatably mounted on the main body shell (101); the external gear (113) meshes with the motor gear (112); a vertical gear shaft (115) is rotatably mounted inside the main body shell (101); an upper gear (116) and a lower gear (118) are fixedly mounted on the vertical gear shaft (115); a transmission belt (114) is wound around the lower gear (118) and the external gear (113); and the upper gear (116) meshes with a central gear (117).

3. The thermal defect detection device for a building wall according to claim 1, characterized in that: The support mechanism comprises a lifting cylinder (202) rotatably mounted on the ball head rod (201), a return spring (203) is arranged between the lifting cylinder (202) and the main body shell (101), and a docking pressure plate (204) is fixedly mounted on the lifting cylinder (202).

4. A thermal defect detection device for a building wall according to claim 3, characterized in that: An outer sleeve (207) is slidably installed in the lifting cylinder (202), a middle sleeve (208) is slidably installed in the outer sleeve (207), an inner sleeve (209) is slidably installed in the middle sleeve (208), a limit ring (211) is fixedly installed on the inner sleeve (209), an inner detection rod (205) is fixedly installed on the limit ring (211), a support head (206) is fixedly installed on the inner detection rod (205), a pop-up spring (210) is arranged between the limit ring (211) and the lifting cylinder (202), and in an initial state, the extension frame (102) is located outside the limit ring (211), and the pop-up spring (210) is in a compressed state.

5. The thermal defect detection device for a building wall according to claim 1, characterized in that: The heating mechanism comprises four internal fixed shafts (303) fixedly mounted in the main body shell (101); a winding drum (302) is rotatably mounted outside the internal fixed shafts (303) via a coil spring (304); one end of the heating pad (301) is fixedly mounted on the winding drum (302); and the other ends of the four heating pads (301) are fixedly mounted on the top of the main body shell (101).

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