A defect detection device for ancient wooden structures

Abstract

The present invention discloses a defect degree detection device for ancient wooden structures, belonging to the field of ancient wooden structure detection. A defect degree detection device for ancient wooden structures includes a detection probe and two arc-shaped plates. One end of the two arc-shaped plates is rotatably connected through a hinge, and the other end of the two arc-shaped plates is fixedly connected through a pin plate. Positioning sleeves are installed on both sides of the arc-shaped plates, and an opening and closing part for driving the positioning sleeves to translate is arranged on the arc-shaped plates; through the cooperation of the driving gear and the driven tooth groove, the rotating arc plate drives the detection probe to rotate around the inner cavity of the rotating arc groove. Then, with the meshing relationship between the linkage teeth and the driven gear, and the setting of the first pulley group and the second pulley group, after the rotating arc plate rotates one circle, the positioning sleeve moves upward, so as to realize the all-round detection of the wooden structure column body, effectively improving the detection accuracy and efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of wooden structure building detection, and particularly to a device for detecting the defect degree of ancient wooden structures. Background Art

[0002] Ancient wooden structures are an important part of traditional Chinese architecture. Their structures are complex and delicate, mainly composed of wooden columns, wooden beams, purlins, and brackets. Over time, the structures of ancient wooden buildings will show varying degrees of defects. In order to evaluate the health status of ancient buildings and ensure the preservation of their safety and historical value, it is necessary to detect the defect degree of ancient wooden structures.

[0003] Currently, when detecting ancient wooden columns, data is usually collected manually on the entire unfolded surface of the column body. The detection efficiency is low, and omissions often occur, reducing the accuracy of the detection results. Moreover, a certain amount of dust adheres to the surface of the wooden column, which will affect the detection results and also lead to a decrease in the accuracy of the detection results. Therefore, a device for detecting the defect degree of ancient wooden structures is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art, such as low detection efficiency, incomplete detection, and the dust adhering to the column body affecting the detection results, ultimately resulting in a decrease in the accuracy of the detection results. A device for detecting the defect degree of ancient wooden structures is proposed.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A device for detecting the defect degree of ancient wooden structures includes a detection probe and two arc-shaped plates. One ends of the two arc-shaped plates are rotatably connected through a hinge, and the other ends of the two arc-shaped plates are fixedly connected through a pin plate. Positioning sleeves are installed on both sides of the arc-shaped plates, and an opening and closing part for driving the positioning sleeves to translate is provided on the arc-shaped plates. It further includes: a rotation assembly, which is arranged on the arc-shaped plate and is used to drive the detection probe to rotate along the outer wall of the positioning sleeve; a lifting assembly, which is arranged on the arc-shaped plate and is used to drive the two positioning sleeves to move up and down; a cleaning assembly, which is arranged on the positioning sleeve and is used to clean the detection probe and the surface of the wooden structure column to be measured.

[0007] Material toggling mechanism, its both sides respectively have the top of two support bars, and the top of two support bars is connected with the spring or rubber cushion, and the rubber cushion is connected with the rubber cushion on the support bar of two support bars.

[0008] In order to improve the detection efficiency, preferably, the rotating component includes a rotating arc plate, a rotating arc groove is opened in both groups of the positioning sleeves, the rotating arc plate is slidably connected in the rotating arc groove, the detection probe is fixed on the outer wall of the rotating arc plate, the top of the positioning sleeve is fixedly connected with a servo motor, the output shaft end of the servo motor is fixedly connected with a driving gear, a driving groove is opened on the outer wall of the positioning sleeve, the driving groove is connected with the inner cavity of the rotating arc groove, a driven tooth groove is opened on the side wall of the rotating arc plate, and the driving gear passes through the driving groove and is meshed with the driven tooth groove.

[0009] Furthermore, the lifting assembly includes a shift plate, which is fixed on the outer wall of the rotating arc plate, and a linkage tooth is fixedly connected to the bottom side wall of the shift plate, a transmission shaft is rotatably connected to the positioning sleeve, a first pulley group is transmission-connected between the transmission shaft and the cross guide rod, a second pulley group is transmission-connected between the reciprocating screw rod and the top of the cross guide rod, and a driven gear is fixedly connected to the bottom end of the transmission shaft, and the driven gear is meshingly connected to the linkage tooth.

[0010] Furthermore, the top of the rotating wheel of the first pulley assembly is fixedly connected to a limiting rotating sleeve, the limiting rotating sleeve is rotatably connected to a limiting rotating ring, and the top of the limiting rotating ring is fixedly connected to the bottom of the positioning sleeve.

[0011] To improve the detection accuracy, preferably, the cleaning component includes a piston box fixed to the outer wall of the positioning sleeve. On both sides of the inner wall of the piston box, there are sliding piston plates. A return spring is fixedly connected between the side wall of the piston plate and the inner wall of the piston box. The rotating shaft of the driving gear penetrates into the piston box and is fixedly connected with a magnetic plate. An exhaust groove is opened in the positioning sleeve, and both ends of the exhaust groove are respectively communicated with both ends of the inner cavity of the piston box. A blowing groove is opened in the rotating arc plate, and the blowing groove is communicated with the inner cavity of the exhaust groove. A blow pipe is fixedly connected to the rotating arc plate.

[0012] Further, there are two groups of the blow pipes, both groups of the blow pipes are communicated with the inner cavity of the blowing groove, the two groups of the blow pipes are symmetrically arranged about the center of the detection probe, the output ends of both groups of the blow pipes face the detection end of the detection probe, and a one-way valve is arranged in the blow pipe.

[0013] Further, on both sides of the inner cavity of the piston plate, there are fixedly connected limiting plates. The magnetic plate and the piston plate repel each other magnetically, and the repulsive force between the magnetic plate and the piston plate is greater than the thrust required for compressing the return spring.

[0014] To improve the dust reduction effect, preferably, a dust storage groove is opened inside the dial plate. An air suction groove is opened in the upper part of the side wall of the dust storage groove. The input end of the air suction groove faces the center of the positioning sleeve. A suction groove is opened between the inner cavity of the dust storage groove and the inner cavity of the blowing groove, and a one-way valve is arranged in the suction groove.

[0015] Further, a dust filtering plate is fixedly connected to the inner wall of the dust storage groove. The dust filtering plate covers the input end of the suction groove, and a dust discharge pipe is fixedly connected and communicated with the bottom of the dust storage groove.

[0016] Compared with the prior art, the present invention provides a defect degree detection device for wooden structure ancient buildings, having the following beneficial effects:

[0017] 1. For the defect degree detection device of the wooden structure ancient building, through the cooperation of the driving gear and the driven tooth groove, the rotating arc plate drives the detection probe to rotate around the inner cavity of the rotating arc groove. Then, with the meshing relationship between the linkage teeth and the driven gear, and the settings of the first pulley group and the second pulley group, after the rotating arc plate rotates one circle, the positioning sleeve moves upward by a certain distance, so as to realize the omnidirectional detection of the wooden structure column body, effectively improving the detection accuracy and efficiency.

[0018] 2. The defect degree detection device for the ancient wooden structure building, through the repulsive force between the magnetic plate and the piston plate, combined with the reset spring, first makes the air flow continuously discharged along the blowing pipe, so as to clean the surface of the detection probe and the wooden structure column; at the same time, a negative pressure adsorption force is generated in the dust storage tank to collect the dust raised during the blowing cleaning, reducing the dust pollution, and at the same time sucking and cleaning the surface of the wooden structure column, effectively ensuring the cleanliness of the surface of the wooden structure column and improving the accuracy of the detection result.

[0019] 3. The defect degree detection device for the ancient wooden structure building, through the setting of two groups of arc-shaped plates and two groups of positioning sleeves, can conveniently carry out the detection work on wooden structure columns at different positions and with different thicknesses, effectively improving the convenience of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of a defect degree detection device for an ancient wooden structure building proposed by the present invention Figure 1 ;

[0021] Figure 2 is a schematic diagram of the overall structure of a defect degree detection device for an ancient wooden structure building proposed by the present invention Figure 2 ;

[0022] Figure 3 is a schematic diagram of the sectional structure of a defect degree detection device for an ancient wooden structure building proposed by the present invention Figure 1 ;

[0023] Figure 4 is a schematic diagram of the enlarged structure of area A in a defect degree detection device for an ancient wooden structure building proposed by the present invention Figure 3 ;

[0024] Figure 5 is a schematic diagram of the sectional structure of a defect degree detection device for an ancient wooden structure building proposed by the present invention Figure 2 ;

[0025] Figure 6 is a schematic diagram of the enlarged structure of area B in a defect degree detection device for an ancient wooden structure building proposed by the present invention Figure 5 ;

[0026] Figure 7 is a schematic diagram of the enlarged structure of area C in a defect degree detection device for an ancient wooden structure building proposed by the present invention Figure 5 ;

[0027] Figure 8 is a schematic diagram of the sectional structure of a defect degree detection device for an ancient wooden structure building proposed by the present invention Figure 3 ;

[0028] Figure 9 Schematic enlarged structure diagram of area D in Figure 8 a defect degree detection device for ancient wooden buildings proposed by the present invention;

[0029] Figure 10 Schematic connection structure diagram of a limit rotating sleeve and a limit rotating ring of a defect degree detection device for ancient wooden buildings proposed by the present invention.

[0030] In the figure: 1, detection probe; 2, arc plate; 21, pin plate; 31, rotating arc groove; 32, driving groove; 3, positioning sleeve; 4, limit guide rail; 41, moving plate; 42, spring telescopic rod; 43, limit guide rod; 44, reciprocating lead screw; 45, cross guide rod; 46, positioning arc plate; 47, air pump; 471, air duct; 5, rotating arc plate; 51, servo motor; 52, driving gear; 53, driven tooth groove; 6, dial; 61, linkage tooth; 62, transmission shaft; 63, first belt pulley group; 631, second belt pulley group; 632, limit rotating sleeve; 633, limit rotating ring; 64, driven gear; 65, dust storage tank; 651, dust suction groove; 652, suction groove; 653, dust filter plate; 654, dust exhaust pipe; 7, piston box; 71, piston plate; 72, return spring; 73, magnetic plate; 74, exhaust groove; 741, blowing groove; 75, blowing pipe; 76, limit plate. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0033] Embodiment:

[0034] Refer to Figures 1 - 10, A defect degree detection device for ancient wooden structures, including a detection probe 1 and two groups of arc-shaped plates 2. One end of the two groups of arc-shaped plates 2 is rotatably connected through a hinge, and the other end of the two groups of arc-shaped plates 2 is fixedly connected through a pin plate 21. Positioning sleeves 3 are installed on both sides of the arc-shaped plates 2, and an opening and closing part for driving the positioning sleeve 3 to translate is provided on the arc-shaped plates 2. It also includes: a rotating assembly, which is arranged on the arc-shaped plate 2 and is used to drive the detection probe 1 to rotate along the outer wall of the positioning sleeve 3; a lifting assembly, which is arranged on the arc-shaped plate 2 and is used to drive the two positioning sleeves 3 to move up and down; a cleaning assembly, which is arranged on the positioning sleeve 3 and is used to clean the surface of the detection probe 1 and the wooden structure column to be measured.

[0035] Refer to Figures 1 - 3 , wherein, the opening and closing part includes two groups of limit guide rails 4, which are respectively fixed on the outer walls of the two sides of the arc-shaped plates 2. A moving plate 41 is slidably connected in each limit guide rail 4. A spring telescopic rod 42 is fixedly connected between the inner wall of the limit guide rail 4 and the top of the moving plate 41. On both sides of the top of one moving plate 41, limit guide rods 43 are respectively fixedly connected. On both sides of the top of the other moving plate 41, a reciprocating lead screw 44 and a cross guide rod 45 are respectively rotatably connected. One side positioning sleeve 3 is slidably sleeved between the two limit guide rods 43, and the other side positioning sleeve 3 is sleeved between the reciprocating lead screw 44 and the cross guide rod 45, and the positioning sleeve 3 is in threaded connection with the reciprocating lead screw 44 and is in sliding connection with the cross guide rod 45. At the top of the two limit guide rods 43 and at the top of the reciprocating lead screw 44 and the cross guide rod 45, positioning arc plates 46 are fixedly connected. An air inflation pump 47 is fixedly connected to the arc-shaped plate 2, and the output end of the air inflation pump 47 is communicated with the inner cavities of the two spring telescopic rods 42 through an air guide pipe 471.

[0036] Through the setting of the above structure, open the two groups of arc-shaped plates 2 and wrap them outside the wooden structure column, and fix the opening and closing ends of the two groups of arc-shaped plates 2 through the pin plate 21. Then, turn on the air inflation pump 47, and send gas into the two spring telescopic rods 42 through the air guide pipe 471, pushing the telescopic ends of the spring telescopic rods 42 to extend, so that the two positioning sleeves 3 are closely attached to form a mutually attached annular detection area, so as to facilitate the detection work on wooden structure columns at different positions and with different thicknesses, effectively improving the convenience of detection.

[0037] Refer to Figures 1 - 4, wherein the rotating assembly includes a rotating arc plate 5, a rotating arc groove 31 is provided in both sets of positioning sleeves 3, the rotating arc plate 5 is slidably connected in the rotating arc groove 31, the detection probe 1 is fixed on the outer wall of the rotating arc plate 5, a servo motor 51 is fixedly connected to the top of the positioning sleeve 3, a driving gear 52 is fixedly connected to the output shaft end of the servo motor 51, a driving groove 32 is provided on the outer wall of the positioning sleeve 3, the driving groove 32 is communicated with the inner cavity of the rotating arc groove 31, a driven tooth groove 53 is provided on the side wall of the rotating arc plate 5, the driving gear 52 passes through the driving groove 32 and is meshed with the driven tooth groove 53; the lifting assembly includes a paddle 6, the paddle 6 is fixed on the outer wall of the rotating arc plate 5, A linkage tooth 61 is fixedly connected to the bottom side wall of the paddle 6, a transmission shaft 62 is rotatably connected to the positioning sleeve 3, a first pulley group 63 is transmission-connected between the transmission shaft 62 and the cross guide rod 45, a second pulley group 631 is transmission-connected between the reciprocating screw rod 44 and the top of the cross guide rod 45, a driven gear 64 is fixedly connected to the bottom end of the transmission shaft 62, and the driven gear 64 is meshingly connected with the linkage tooth 61; the first pulley group 63 is sleeved on the cross guide rod 45, and the top of the rotating wheel is fixedly connected to a limited position rotating sleeve 632, and the limited position rotating sleeve 632 is rotatably connected to a limited position rotating ring 633, and the top of the limited position rotating ring 633 is fixedly connected to the bottom of the positioning sleeve 3.

[0038] Through the arrangement of the above structure, the servo motor 51 is turned on to drive the driving gear 52 to rotate, and the meshing relationship between the driving gear 52 and the driven tooth groove 53 is coordinated to make the rotating arc plate 5 rotate around the inner cavity of the rotating arc groove 31, thereby driving the detection probe 1 to rotate around the outer wall of the wooden structure column to complete the detection of one circle of the wooden structure column. At the same time, during the rotation of the rotating arc plate 5, the meshing relationship between the linkage teeth 61 and the driven gear 64 will drive the transmission shaft 62 to rotate after each rotation. At this time, the transmission effect of the first pulley group 63 will drive the cross guide rod 45 to rotate, and then cooperate with the second pulley group 631. The transmission action will drive the reciprocating screw 44 to rotate, so that the positioning sleeve 3 moves upward along the reciprocating screw 44, and because the positioning sleeves 3 on both sides are in a tightly fitted state, the positioning sleeves 3 on both sides will move upward synchronously, and in conjunction with the setting of the limit rotating sleeve 632 and the limit rotating ring 633, the first pulley group 63 will drive the cross guide rod 45 to rotate while also sliding upward along the cross guide rod 45, thereby ensuring that during the subsequent rotation of the rotating arc plate 5, the positioning sleeve 3 can continue to be driven to move upward along the reciprocating screw 44, thereby realizing all-round detection of the wooden structure column, effectively improving the detection accuracy and efficiency.

[0039] Reference Figures 4 - 9, wherein, the cleaning component includes a piston box 7, the piston box 7 is fixed on the outer wall of the positioning sleeve 3, piston plates 71 are slidably connected to both sides of the inner wall of the piston box 7, a return spring 72 is fixedly connected between the side wall of the piston plate 71 and the inner wall of the piston box 7, the rotating shaft of the driving gear 52 penetrates into the piston box 7 and is fixedly connected with a magnetic plate 73, limiting plates 76 are fixedly connected to both sides of the inner cavity of the piston plate 71, the magnetic plate 73 and the piston plate 71 repel each other magnetically, and the repulsive force between the magnetic plate 73 and the piston plate 71 is greater than the thrust required for compressing the return spring 72; an exhaust groove 74 is formed in the positioning sleeve 3, both ends of the exhaust groove 74 are respectively communicated with both ends of the inner cavity of the piston box 7, a blowing groove 741 is formed in the rotating arc plate 5, the blowing groove 741 is communicated with the inner cavity of the exhaust groove 74, and a blowing pipe 75 is fixedly connected to the rotating arc plate 5; there are two groups of blowing pipes 75, both groups of blowing pipes 75 are communicated with the inner cavity of the blowing groove 741, the two groups of blowing pipes 75 are symmetrically arranged about the center of the detection probe 1, the output ends of both groups of blowing pipes 75 face the detection end of the detection probe 1, and a one-way valve is arranged in the blowing pipe 75.

[0040] It should be noted that the one-way valve in the blowing pipe 75 only allows the gas in the exhaust groove 74 to be discharged along the blowing pipe 75.

[0041] Through the setting of the above structure, while the driving gear 52 rotates, it will drive the magnetic plate 73 to rotate in the piston box 7. At this time, by using the repulsive effect between the magnetic plate 73 and the piston plate 71, the piston box 7 will slide towards the side where the return spring 72 is compressed, thereby compressing the gas in the piston box 7 and making this part of the gas enter the exhaust groove 74 along the blowing groove 741. Then, it will push open the one-way valve in the blowing pipe 75 and blow towards the detection end of the detection probe 1 along the output end of the blowing pipe 75, so as to clean the detection end of the detection probe 1 and the surface of the wooden structure column, reduce the influence of dust and impurities on the detection result, and effectively improve the detection accuracy.

[0042] Refer to Figures 5 - 7 , wherein, a dust storage groove 65 is formed inside the dial 6, a dust suction groove 651 is formed in the upper part of the side wall of the dust storage groove 65, the input end of the dust suction groove 651 faces the center of the positioning sleeve 3, a suction groove 652 is formed between the inner cavity of the dust storage groove 65 and the inner cavity of the blowing groove 741, and a one-way valve is arranged in the suction groove 652; a dust filtering plate 653 is fixedly connected to the inner wall of the dust storage groove 65, the dust filtering plate 653 covers the input end of the suction groove 652, and a dust discharge pipe 654 is fixedly connected and communicated with the bottom of the dust storage groove 65.

[0043] It should be noted that the one-way valve in the suction groove 652 only allows the external air flow to be sucked into the blowing groove 741.

[0044] With the above structure, when the magnetic plate 73 disengages from the repulsive area of the piston plate 71, under the resilience of the return spring 72, the piston plate 71 will reset, thereby generating a negative pressure suction force in the piston box 7 and opening the check valve in the suction groove 652, causing the airflow around the wooden structure column to be sucked into the dust storage groove 65 and intercepted in the dust storage groove 65 after being filtered by the dust filter plate 653. The airflow part is sucked into the air blowing groove 741 for gas part, ensuring the continuous progress of the above air blowing effect. At this time, the suction force will collect the dust raised during the air blowing cleaning, reducing the dust pollution, and at the same time sucking and cleaning the surface of the wooden structure column, ensuring the cleanliness of the surface of the wooden structure column and further improving the accuracy of the detection result.

[0045] Refer to Figures 1 - 10 In the present invention, when in use, open the two arc-shaped plates 2 and wrap them around the outer side of the wooden structure column, and fix the open and close ends of the two arc-shaped plates 2 through the pin plate 21. Then start the air pump 47 and send gas into the two spring telescopic rods 42 through the air duct 471, pushing the telescopic ends of the spring telescopic rods 42 to extend, so that the two positioning sleeves 3 are closely attached to each other, thereby forming a mutually attached annular detection area.

[0046] Then start the servo motor 51 to drive the driving gear 52 to rotate. With the meshing relationship between the driving gear 52 and the driven tooth groove 53, the rotating arc plate 5 rotates around the inner cavity of the rotating arc groove 31, thereby driving the detection probe 1 to rotate around the outer wall of the wooden structure column, completing the detection of one circle of the wooden structure column. At the same time, during the rotation of the rotating arc plate 5, with the meshing relationship between the linkage tooth teeth 61 and the driven gear 64, the transmission shaft 62 will be driven to rotate after each rotation. At this time, with the transmission of the first pulley group 63, the cross guide rod 45 will be driven to rotate. Then, with the transmission of the second pulley group 631, the reciprocating lead screw 44 will be driven to rotate, causing the positioning sleeve 3 to move upward along the reciprocating lead screw 44. Moreover, since the two positioning sleeves 3 are in a closely attached state, the two positioning sleeves 3 will move upward synchronously. And with the setting of the limit rotating sleeve 632 and the limit rotating ring 633, when the first pulley group 63 drives the cross guide rod 45 to rotate, it will also slide upward along the cross guide rod 45, thereby ensuring that during the subsequent rotation of the rotating arc plate 5, it can continuously drive the positioning sleeve 3 to move upward along the reciprocating lead screw 44, thereby realizing the omnidirectional detection of the wooden structure column and effectively improving the detection accuracy and efficiency.

[0047] Meanwhile, while the driving gear 52 rotates, it will drive the magnetic plate 73 to rotate within the piston box 7. At this time, by utilizing the repulsive force between the magnetic plate 73 and the piston plate 71, the piston box 7 will slide towards the side where the compression return spring 72 is located, thereby compressing the gas within the piston box 7. This part of the gas will then enter the exhaust groove 74 along the air blowing groove 741, and subsequently push open the one-way valve within the air blowing pipe 75, and blow towards the detection end of the detection probe 1 along the output end of the air blowing pipe 75, so as to clean the detection end of the detection probe 1 and the surface of the wooden structure column, reducing the influence of dust and impurities on the detection result and effectively improving the detection accuracy. When the magnetic plate 73 disengages from the repulsive area of the piston plate 71, under the resilience of the return spring 72, the piston plate 71 will reset, thereby generating a negative pressure suction effect within the piston box 7 and opening the one-way valve within the suction groove 652, causing the airflow around the wooden structure column to be sucked into the dust storage groove 65 and being intercepted within the dust storage groove 65 after being filtered by the dust filtering plate 653, while a part of the airflow is sucked into the air blowing groove 741 for the gas part, ensuring the continuous progress of the above-mentioned air blowing effect. At this time, the suction effect will collect the dust raised during the air blowing cleaning, reducing the dust pollution, and simultaneously performing air suction cleaning on the surface of the wooden structure column, ensuring the cleanliness of the surface of the wooden structure column and further improving the accuracy of the detection result.

[0048] As described above, it is only the preferred specific implementation manner 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 disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A defect degree detection device for ancient wooden buildings, comprising a detection probe (1) and two groups of arc-shaped plates (2), characterized in that, One end of two groups of the arc-shaped plates (2) is rotatably connected through a hinge, and the other ends of the two groups of the arc-shaped plates (2) are fixedly connected through a pin plate (21). Positioning sleeves (3) are installed on both sides of the arc-shaped plates (2), and an opening and closing part for driving the positioning sleeve (3) to translate is arranged on the arc-shaped plates (2). Further included are: A rotating assembly, which is arranged on the arc-shaped plate (2) and is used to drive the detection probe (1) to rotate along the outer wall of the positioning sleeve (3); A lifting assembly, which is arranged on the arc-shaped plate (2) and is used to drive the two positioning sleeves (3) to move up and down; A cleaning assembly, which is arranged on the positioning sleeve (3) and is used to clean the detection probe (1) and the surface of the wooden structure column to be measured; The opening and closing part includes two groups of limit guide rails (4), and the two groups of limit guide rails (4) are respectively fixed on the outer walls of the two arc-shaped plates (2). A moving plate (41) is slidably connected in each of the limit guide rails (4). A spring telescopic rod (42) is fixedly connected between the inner wall of the limit guide rail (4) and the top of the moving plate (41). On both sides of the top of one moving plate (41), limit guide rods (43) are respectively fixedly connected. On both sides of the top of the other moving plate (41), a reciprocating lead screw (44) and a cross guide rod (45) are respectively rotatably connected. One side of the positioning sleeve (3) is slidably sleeved between the two limit guide rods (43), and the other side of the positioning sleeve (3) is sleeved between the reciprocating lead screw (44) and the cross guide rod (45). And the positioning sleeve (3) is in threaded connection with the reciprocating lead screw (44), and the positioning sleeve (3) is in sliding connection with the cross guide rod (45). At the tops of the two limit guide rods (43) and at the tops of the reciprocating lead screw (44) and the cross guide rod (45), positioning arc plates (46) are fixedly connected. An air pump (47) is fixedly connected to the arc-shaped plate (2), and the output end of the air pump (47) is communicated with the inner cavities of the two spring telescopic rods (42) through an air guide pipe (471); The rotating assembly includes a rotating arc plate (5). Rotating arc grooves (31) are formed in both groups of the positioning sleeves (3). The rotating arc plate (5) is slidably connected in the rotating arc grooves (31). The detection probe (1) is fixed on the outer wall of the rotating arc plate (5). A servo motor (51) is fixedly connected to the top of the positioning sleeve (3). A driving gear (52) is fixedly connected to the output shaft end of the servo motor (51). A driving groove (32) is formed in the outer wall of the positioning sleeve (3), and the driving groove (32) is communicated with the inner cavity of the rotating arc groove (31). A driven tooth groove (53) is formed in the side wall of the rotating arc plate (5), and the driving gear (52) passes through the driving groove (32) and is meshed with the driven tooth groove (53).

2. The defect detection device for a wooden structure ancient building according to claim 1, characterized in that, The lifting assembly comprises a shifting plate (6), wherein the shifting plate (6) is fixed on the outer wall of the rotating arc plate (5), a linkage tooth (61) is fixedly connected to the bottom side wall of the shifting plate (6), a transmission shaft (62) is rotatably connected to the positioning sleeve (3), a first belt pulley group (63) is transmission-connected between the transmission shaft (62) and the cross guide rod (45), a second belt pulley group (631) is transmission-connected between the reciprocating screw rod (44) and the top of the cross guide rod (45), a driven gear (64) is fixedly connected to the bottom end of the transmission shaft (62), and the driven gear (64) is meshingly connected to the linkage tooth (61).

3. The defect detection device for a wooden structure ancient building according to claim 2, characterized in that, The top of the rotating wheel of the first pulley group (63) sleeved on the cross guide rod (45) is fixedly connected to a limited position rotating sleeve (632), and a limited position rotating ring (633) is rotatably connected inside the limited position rotating sleeve (632), and the top of the limited position rotating ring (633) is fixedly connected to the bottom of the positioning sleeve (3).

4. The defect detection device for a wooden-structured ancient building according to claim 2, wherein The cleaning assembly comprises a piston box (7), wherein the piston box (7) is fixed on the outer wall of the positioning sleeve (3), piston plates (71) are slidably connected to both sides of the inner wall of the piston box (7), a return spring (72) is fixedly connected between the side wall of the piston plate (71) and the inner wall of the piston box (7), the rotating shaft of the driving gear (52) passes through the piston box (7) and is fixedly connected to a magnetic plate (73), an exhaust groove (74) is provided in the positioning sleeve (3), and two ends of the exhaust groove (74) are respectively connected to two ends of the inner cavity of the piston box (7), an air blowing groove (741) is provided in the rotating arc plate (5), and the air blowing groove (741) is connected to the inner cavity of the exhaust groove (74), and an air blowing pipe (75) is fixedly connected to the rotating arc plate (5).

5. The defect detection device for a wooden structure ancient building according to claim 4, characterized in that, Two groups of the air blowing pipes (75) are provided, and both groups of the air blowing pipes (75) are connected to the inner cavity of the air blowing groove (741). The two groups of the air blowing pipes (75) are symmetrically arranged along the center of the detection probe (1). The output ends of the two groups of the air blowing pipes (75) are both oriented toward the detection end of the detection probe (1), and a one-way valve is arranged inside the air blowing pipe (75).

6. The defect detection device for a wooden-structured ancient building according to claim 4, wherein Limiting plates (76) are fixedly connected to both sides of the inner cavity of the piston plate (71), the magnetic plate (73) and the piston plate (71) are magnetically repelled from each other, and the repulsive force between the magnetic plate (73) and the piston plate (71) is greater than the thrust required for compression of the return spring (72).

7. A defect degree detection device for a wooden structure ancient building according to claim 4, characterized in that, A dust storage groove (65) is provided inside the paddle (6), a dust suction groove (651) is provided on the upper part of the side wall of the dust storage groove (65), an input end of the dust suction groove (651) faces the center of the positioning sleeve (3), a suction groove (652) is provided between the inner cavity of the dust storage groove (65) and the inner cavity of the blowing groove (741), and a one-way valve is provided in the suction groove (652).

8. The defect detection device for a wooden-structured ancient building according to claim 7, wherein, A dust filter plate (653) is fixedly connected to the inner wall of the dust storage groove (65), and the dust filter plate (653) covers the input end of the suction groove (652). The bottom of the dust storage groove (65) is fixed and connected to a dust exhaust pipe (654).

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