Thermal defect detection device for building wall

Abstract

The invention discloses a thermal defect detection device for a building wall, and belongs to the technical field of thermal detection, the thermal defect detection device comprises a temperature detection mechanism for detecting the temperature of the wall, the temperature detection mechanism is provided with a supporting mechanism and a heating mechanism for heating the wall, and the supporting mechanism is used for supporting a heating pad on the surface of the wall. The supporting head extends out, the heating pad is tightly pressed on a building wall, heat is conducted to the wall through the heating pad, the temperature of the heating pad and the wall is measured through the infrared temperature measuring head, obvious temperature difference can be reflected in a displayed infrared image, and the position of a defect can be accurately judged according to the infrared image; the supporting head and the inner detection rod stretch out in a multi-stage stretching-out mode, so that the stretching-out distance of the supporting head is lengthened, the supporting head and the heating pad can stretch out by an enough distance in cooperation with the rolled heating pad, the detection device can detect the wall face of a large room, and the detection range is wide.

Description

Technical Field

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

[0002] Building thermal testing is a test of physical parameters such as indoor and outdoor heat, humidity, and thermal environment. The test content includes but is not limited to temperature, humidity, wind speed, heat flow, micro-air pressure, etc. These parameters can be used to comprehensively evaluate the building; among them, temperature measurement includes tests such as indoor and outdoor fixed temperature difference and indoor insulation effect. This type of temperature test can directly reflect whether the building is suitable for living. Too low temperature difference and poor insulation effect must be repaired before it can be delivered for living. The building wall thermal defect detection device in the prior art only uses an infrared detector to detect the wall surface, which can only observe the current wall temperature, and there is no heating and cooling or comparison process, so the detection effect is poor. Summary of the invention

[0003] In response to the above technical problems, the technical solution adopted by the present invention is: a thermal defect detection device for a building wall, 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 extension frames are fixedly mounted on the main body shell. The temperature detection mechanism is provided with a supporting mechanism and a heating mechanism for heating the wall, the supporting mechanism includes a plurality of ball head rods, and the ball head rods are fixedly mounted in the main body shell. The heating mechanism includes a heating pad, and the supporting mechanism is used to support the heating pad on the wall surface.

[0004] Furthermore, 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, and an upper sliding plate and a lower sliding plate are slidably installed in the main body shell. The upper sliding plate and the lower sliding plate respectively form a threaded transmission with the two sections of threads of the double-threaded column. When the double-threaded column rotates, the upper sliding plate and the lower sliding plate move inward or outward at the same time. A central gear is fixedly installed on the double-threaded column, and an intermediate spring is provided between the upper sliding plate and the lower sliding plate.

[0005] Furthermore, a control module is provided on the main body shell, a motor is fixedly mounted on the main body shell, a motor gear is fixedly mounted on the motor shaft of the motor, an external gear is rotatably mounted on the main body shell, the external gear is meshed with the motor gear, a vertical gear shaft is rotatably mounted inside the main body shell, an upper gear and a lower gear are fixedly mounted on the vertical gear shaft, a transmission belt is wrapped around the lower gear and the external gear, and the upper gear is meshed with the center gear.

[0006] Furthermore, an upper rotating rod is rotatably installed on the upper sliding plate, a lower rotating rod is rotatably installed on the lower sliding plate, four infrared temperature measuring heads are slidably installed on the main body shell, the infrared temperature measuring heads are rotatably installed with the upper rotating rod, the infrared temperature measuring heads are rotatably installed with the lower rotating rod, and the infrared temperature measuring heads are electrically connected to the external display.

[0007] When in use, place the device in the room where the wall to be tested is located. In the initial state, the extension frame clamps the limit ring, and the control module sends an opening command to the motor. The motor drives the motor gear to rotate, thereby driving the outer gear to rotate, and the lower gear, the vertical gear shaft and the upper gear are driven by the transmission belt to rotate, thereby driving the center gear and the double-threaded column to rotate. The rotation of the double-threaded column drives the upper sliding plate to move downward, and the lower sliding plate to move upward. The middle spring is stretched, and the upper sliding plate and the lower sliding plate are respectively pushed to lift the cylinder to rotate around the ball head rod through the docking pressure plate, so that the extension frame no longer blocks the limit ring. At the same time, the upper sliding plate descends, and the lower sliding plate rises, driving the upper rotating rod and the lower rotating rod to rotate, thereby driving the infrared temperature measuring head to extend.

[0008] Furthermore, the support mechanism includes a lifting cylinder rotatably mounted on the ball head rod, a return spring is arranged between the lifting cylinder and the main body shell, and a docking pressure plate is fixedly mounted on the lifting cylinder.

[0009] Furthermore, an outer sleeve is slidably installed in the lifting cylinder, a middle sleeve is slidably installed in the outer sleeve, an inner sleeve is slidably installed in the middle sleeve, a limiting ring is fixedly installed on the inner sleeve, an inner detection rod is fixedly installed on the limiting ring, a supporting head is fixedly installed on the inner detection rod, a pop-up spring is arranged between the limiting ring and the lifting cylinder, and in the initial state, the extension frame is located outside the limiting ring, and the pop-up spring is in a compressed state.

[0010] When the lifting tube rotates relative to the ball head rod, the reset spring is compressed. At this time, the extension frame is no longer outside the limit circle, 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 tube. At this time, the support head pops up to the farthest point, and the heating pad is pushed to the wall through 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 measuring head, and the image is transmitted to the external display. Since the defective part of the wall has poor thermal insulation performance, when infrared temperature measurement is performed, an obvious temperature difference will be reflected in the displayed image. The location of the defect can be accurately determined based on the infrared image.

[0011] Furthermore, the heating mechanism includes four internal fixed shafts fixedly installed in the main body shell, a winding drum is rotatably installed outside the internal 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 shell.

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

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) the support head provided in the present invention is extended to press the heating pad tightly against the building wall, and the heat is conducted to the wall through the heating pad, and the temperature of the heating pad and the wall is measured by the infrared temperature measuring head, and the displayed infrared image will reflect an obvious temperature difference, and the location of the defect can be accurately determined based on the infrared image; (2) the support head and the inner detection rod provided in the present invention are extended in a multi-stage manner, so that the extension distance of the support head is lengthened, and the support head and the heating pad can be extended to a sufficiently far distance in conjunction with the rolled-up heating pad, so that the detection device can detect the wall of a larger room with a wide detection range; (3) when the temperature detection mechanism provided in the present invention is started, the support head is extended and the infrared temperature measuring head is extended, 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 (interior).

[0016] Figure 3 The structure of the temperature detection mechanism of the present invention is shown in FIG. Figure 1 .

[0017] Figure 4 The structure of the temperature detection mechanism of the present invention is shown in FIG. Figure 2 .

[0018] Figure 5 The supporting structure of the present invention is shown in FIG. Figure 1 .

[0019] Figure 6 The supporting structure of the present invention is shown in FIG. Figure 2 .

[0020] Figure 7 for Figure 6 A local enlarged schematic diagram of point A in the middle.

[0021] Figure 8 The supporting structure of the present invention is schematically shown in FIG. Figure 3 .

[0022] Fig. 9 Schematic diagram of the heating mechanism structure of the present invention Figure 1 .

[0023] Fig.10 Schematic diagram of the heating mechanism structure of the present invention Figure 2.

[0024] Reference numerals: 101-main body shell; 102-extension frame; 103-double threaded column; 104-control module; 105-upper sliding plate; 106-lower sliding plate; 107-upper rotating rod; 108-lower rotating rod; 109-infrared temperature measuring head; 110-middle spring; 111-motor; 112-motor gear; 113-external gear; 114-transmission belt; 115-vertical gear shaft; 116-upper gear; 11 7-center gear; 118-lower gear; 201-ball head rod; 202-lifting cylinder; 203-reset spring; 204-docking pressure plate; 205-inner detection rod; 206-support head; 207-outer sliding sleeve; 208-middle sliding sleeve; 209-inner sliding sleeve; 210-pop-up spring; 211-limiting ring; 301-heating pad; 302-winding drum; 303-inner fixed shaft; 304-coil spring. DETAILED DESCRIPTION

[0025] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0026] Example: Reference Figure 1-Figure 10 A thermal defect detection device for a building wall includes a temperature detection mechanism for detecting the temperature of the wall, the temperature detection mechanism includes a main body shell 101, and a plurality of extension frames 102 are fixedly installed on the main body shell 101. The temperature detection mechanism is provided with a supporting mechanism and a heating mechanism for heating the wall, the supporting mechanism includes a plurality of ball head rods 201, and the ball head rods 201 are fixedly installed in the main body shell 101. The heating mechanism includes a heating pad 301, and the supporting mechanism is used to support the heating pad 301 on the wall surface.

[0027] like Figure 3 , Figure 4 As shown, the temperature detection mechanism includes a double-threaded column 103 rotatably installed in the main body shell 101, and the double-threaded column 103 is provided with two sections of threads. An upper sliding plate 105 and a lower sliding plate 106 are slidably installed in the main body shell 101. The upper sliding plate 105 and the lower sliding plate 106 respectively form 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 installed 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.

[0028] like Figure 3 , Figure 4As shown, a control module 104 is provided on the main shell 101, a motor 111 is fixedly mounted on the main 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 shell 101, the external gear 113 is meshed with the motor gear 112, a vertical gear shaft 115 is rotatably mounted inside the main 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 is meshed with the center gear 117.

[0029] like Figure 3 , Figure 4 As shown, 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 measuring heads 109 are slidably installed on the main body shell 101, the infrared temperature measuring heads 109 are rotatably installed with the upper rotating rod 107, the infrared temperature measuring heads 109 are rotatably installed with the lower rotating rod 108, and the infrared temperature measuring heads 109 are electrically connected to the external display.

[0030] When in use, the device is placed in the room where the wall to be measured is located. In the initial state, the extension frame 102 clamps the limit ring 211, and the control module 104 sends an opening command to the motor 111. The motor 111 drives the motor gear 112 to rotate, thereby driving the outer gear 113 to rotate, and 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 plate 105 to move downward, and the lower sliding plate 106 to move upward. The middle spring 110 is stretched, and the upper sliding plate 105 and the lower sliding plate 106 respectively push the lifting tube 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, and at the same time, the upper sliding plate 105 descends, and the lower sliding plate 106 rises 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.

[0031] like Figure 5-Figure 8 As shown, the supporting mechanism includes a lifting cylinder 202 rotatably mounted on a ball head rod 201 , a return spring 203 is provided 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 .

[0032] like Figure 5-Figure 8As shown, 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 limiting ring 211 is fixedly installed on the inner 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, and 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 tube 202 rotates relative to the ball head rod 201, the return spring 203 is compressed. At this time, the extension frame 102 is no longer located outside the limit circle 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, 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, it drives the outer sliding sleeve 207 to slide outward relative to the lifting tube 202. At this time, the support head 206 pops out to the farthest point, and the heating pad 301 is pushed against the wall through the support head 206. The heating pad 301 generates heat and conducts the heat to the wall. The heating pad 301 is measured by the extended infrared temperature measuring head 109, and the image is transmitted to the external display. Since the defective part of the wall has poor thermal insulation performance, when infrared temperature measurement is performed, an obvious temperature difference will be reflected in the displayed image. The location of the defect can be accurately determined based on the infrared image.

[0034] like Fig. 9 , Fig.10 As shown, the heating mechanism includes four internal fixed shafts 303 fixedly installed in the main body shell 101, and a winding drum 302 is rotatably installed outside the internal fixed shaft 303 through a coil spring 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 use is completed, the support head 206 is manually retracted, and the coil spring 304 rebounds.

[0036] Working principle: when in use, the device is placed in the room where the wall to be measured is located. In the initial state, the extension frame 102 clamps the limit ring 211, and the control module 104 sends an opening command to the motor 111. The motor 111 drives the motor gear 112 to rotate, thereby driving the outer gear 113 to rotate, and 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 plate 105 to move downward, and the lower sliding plate 106 to move upward. The middle spring 110 is stretched, and the upper sliding plate 105 and the lower sliding plate 106 respectively push the lifting tube 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, and at the same time, the upper sliding plate 105 descends, and the lower sliding plate 106 rises 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 tube 202 rotates relative to the ball head rod 201, the return spring 203 is compressed. At this time, the extension frame 102 is no longer located outside the limit circle 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, 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, it drives the outer sliding sleeve 207 to slide outward relative to the lifting tube 202. At this time, the support head 206 pops out to the farthest point, and the heating pad 301 is pushed against the wall through the support head 206. The heating pad 301 generates heat and conducts the heat to the wall. The heating pad 301 is measured by the extended infrared temperature measuring head 109, and the image is transmitted to the external display. Since the defective part of the wall has poor thermal insulation performance, when infrared temperature measurement is performed, an obvious temperature difference will be reflected in the displayed image. The location of the defect can be accurately determined based on 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 use is completed, the support head 206 is manually retracted, and the coil spring 304 rebounds.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope of the present invention, which 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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