Wood industry plate crack detection device

Abstract

The invention discloses a wood industry plate crack detection device, and relates to the technical field of plate crack detection. The device specifically comprises a rack, a case is fixedly connected to one corner of the top of the rack, first side frames are fixedly connected to the outer walls of the two sides of the top of the rack, first moving belts are arranged on the opposite sides of the first side frames, a supporting plate is fixedly connected to one side of the rack, and telescopic rods are fixedly connected to the two sides of the front face of the rack; a second side frame is fixed to the outer wall of the top of the telescopic rod through bolts, a second moving belt is arranged on the opposite side of the second side frame, the two inner ends of the first moving belt and the two inner ends of the second moving belt are in transmission connection with rotating rollers, and auxiliary rollers are arranged in the middles of the interiors of the first moving belt and the second moving belt; a moving mechanism is arranged on one side of the middle of the front face of the rack, X-ray shooting equipment is arranged at the moving end of the moving mechanism, and fixing blocks are fixedly connected to the two sides of the second side frame. The whole structure is simple to operate, few electrical components are arranged in the device, the energy consumption is low, and the detection efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of board crack detection, and in particular to a wood board crack detection device. Background Art

[0002] Crack detection of wood board refers to the detection of cracks and defects on the surface or inside of wood during wood processing and production to ensure the quality and reliability of wood products. Wood is easily affected by various factors during processing and use, such as drying, temperature changes, mechanical stress, etc., which cause cracks and defects in wood and reduce its strength and durability. Crack detection is of great significance in the wood processing industry. By timely discovering and repairing cracks and defects in wood, safety hazards and quality problems in the use of wood products can be avoided, and the quality and market competitiveness of products can be improved. At the same time, crack detection also helps to optimize production processes, reduce wood waste and loss, and improve production efficiency and economic benefits. Modern wood crack detection usually uses non-destructive testing technologies, such as X-ray detection, infrared imaging, ultrasonic detection, etc. These technologies can quickly and accurately detect cracks and defects in wood, providing reliable quality control methods for wood processing companies. Through the application of crack detection technology, the wood processing industry can improve product quality, reduce production costs, enhance competitiveness, and promote the sustainable development of the wood industry.

[0003] After searching, the invention with Chinese patent application number CN2014101908818 discloses a plate crack detection device, including a relatively arranged transmitter and receiver, the transmitter includes a square wave generator and 10 LED drive circuits, each LED drive circuit drives 5 LED transmitting tubes; the receiver includes 18 photosensitive transistor receiving circuits, an eighth-order Chebyshev bandpass active filter, a full-wave peak rectifier circuit, a voltage comparator and a drive circuit, each photosensitive transistor receiving circuit includes 3 LED photosensitive transistors and a small signal amplification circuit in turn: a flat mirror is set on the opposite side of the transmitter and the receiving circuit, and on the opposite side of the receiver and the transmitter. The circuit of the present invention is simplified: a flat mirror corresponds to multiple sensors, and there are no great requirements for installation up and down, left and right, which reduces the demand for production workers, reduces the machining accuracy, and is also convenient for cleaning dust later. A plate crack detection device in the above invention has the following shortcomings:

[0004] Although the above device has good driving ability and strong anti-interference ability, and does not require a convex lens and can use a flat mirror to achieve detection, there are too many electrical components in the device, which consumes a lot of energy and requires high precision in the linkage of the electrical components, making it difficult to set up. Therefore, there is an urgent need for a wood board crack detection device. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a wood board crack detection device.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A wood board crack detection device comprises a frame, a top corner of the frame is fixedly connected to a chassis, and the top two outer walls of the frame are fixedly connected to a side frame 1, a moving belt 1 is arranged on the opposite side of the side frame 1, and a support plate is fixedly connected to one side of the frame, and telescopic rods are fixedly connected to the front two sides of the frame, and the top outer wall of the telescopic rod is fixed to a side frame 2 by bolts;

[0008] A moving belt 2 is arranged on the opposite side of the side frame 2, the inner ends of the moving belt 1 and the moving belt 2 are transmission-connected with rollers, and an auxiliary roller is arranged in the middle of the moving belt 1 and the moving belt 2, a rotating mechanism is arranged inside the chassis, and a moving mechanism is arranged on the middle side of the front of the frame, and an X-ray shooting device is arranged at the moving end of the moving mechanism, and fixed blocks are fixedly connected to the two sides of the side frame 2, and an adjustment mechanism is arranged at the bottom of the fixed block.

[0009] Preferably: the rotating mechanism includes a driving gear 1, a guide shaft 1, a guide shaft 2, a slider, a guide groove and a driving gear 2, and one side of the chassis is fixedly connected to a motor 1 through a support plate, and the guide shaft 1 is arranged at the output end of the motor 1, the driving gear 1 is connected to the circumference of the guide shaft 1 through a thread, and one end of the guide shaft 1 is connected to the end of the roller on the inner side of the moving belt 1 through a thread.

[0010] Furthermore: the guide groove is opened on both sides of the top of the chassis, and an opening is opened on the top of the chassis, the slider is slidably connected to the inside of the guide groove, the guide shaft 2 is rotatably connected to the slider, the drive gear 2 is connected to the middle circumference of the guide shaft 2 through a thread, and the end of the guide shaft 2 is connected to the end of the roller on the inner side of the moving belt 2 through a thread, and the drive gear 1 and the drive gear 2 are meshed with each other.

[0011] On the basis of the above scheme: the moving mechanism includes a fixed frame, a touch sensor, a guide rod 1, a guide rod 2, a fixed seat, a guide rail, a moving block and an X-ray shooting device, and a mounting groove is opened on the middle outer wall of the front side of the frame, a motor 2 is arranged in the mounting groove, the guide rod 1 is arranged on the circumference of the output end of the motor 2, and the bottom end of the guide rod 2 is rotatably connected to the top end of the guide rod 1.

[0012] A better solution in the aforementioned solution is: the fixed frame is fixedly connected to the top of one of the side frames, the top of the other side frame is fixedly connected with a reflective plate, and the guide rail is arranged on the inner side of the fixed frame, the touch sensor is fixedly connected to the two inner ends of the fixed frame, the moving block is sleeved on the outer surface of the guide rail, and the moving block and the guide rail form a sliding fit.

[0013] As a further solution of the present invention: the fixing seat is fixedly connected to the bottom of the moving block, the top end of the second guide rod forms a rotational fit with the fixing seat, and the X-ray shooting device is arranged on an outer wall of one side of the moving block.

[0014] At the same time, the adjustment mechanism includes a rack plate, a linkage gear, a button ring, a connecting plate, a Z-shaped plate and a guide bar, and the Z-shaped plate is arranged on both sides of the front of the frame, and the rack plate is fixedly connected to the bottom of the fixed block.

[0015] As a preferred embodiment of the present invention: a thread groove is provided on one side of the Z-shaped plate, and a button ring is arranged in the thread groove, and a linkage gear is arranged on the inner shaft circumference of the button ring.

[0016] At the same time, the linkage gear and the rack plate are meshed with each other, the connecting plate and the rack plate are fixedly connected to each other, and the guide bar is fixedly connected to the back side of the rack plate.

[0017] As a more preferred solution of the present invention: a slide groove is provided on one side of the Z-shaped plate, and the slide groove forms a sliding fit with the guide bar.

[0018] The beneficial effects of the present invention are:

[0019] 1. A wood board crack detection device, by starting motor 2 to drive guide rod 1 to rotate, the rotating guide rod 1 drives guide rod 2 to swing, and the top of the swinging guide rod 2 pulls the moving block above the fixed seat to slide horizontally on the guide rail, and the X-ray shooting device located on the back of the moving block moves horizontally. At this time, the X-ray shooting device is started to perform X-ray projection imaging on the wooden board to display the cracks and cracks in the wooden board, help detect the position, shape and size of the cracks, as well as the parameters of the length, depth and density of the cracks, provide a basis for quality control and quality evaluation of the wooden board, not only realize the crack detection function while conveying the wooden board, but also complete the rapid and accurate discovery of crack defects in the wooden board, help production enterprises to repair problems in time, improve product quality and market competitiveness, and reduce waste in the production of wooden boards and reduce production costs.

[0020] 2. A wood board crack detection device drives a guide shaft to rotate by starting a motor, and the rotating guide shaft drives a driving gear to rotate, and the rotating driving gear drives a driving gear to rotate, and the rotating driving gear drives a guide shaft to rotate, and the synchronously rotating guide shafts 1 and 2 drive the rollers inside the moving belts 1 and 2 to rotate, thereby making the moving belts 1 and 2 move, and when the wood board passes through the middle of the moving belts 1 and 2, the stability of the transportation of the wood board is guaranteed, and the deviation of the wood board during movement is avoided.

[0021] 3. This wood board crack detection device, by rotating the button ring into the threaded groove, the rotating button ring drives the linkage gear to rotate, and the rotating linkage gear drives the rack plate to move upward, and at the same time the guide strip located on the back of the rack plate slides vertically in the slide groove on one side of the Z-shaped plate, thereby driving the moving belt 2 upward, and adjusting the distance between the moving belt 1 and the moving belt 2. During this process, the slider slides synchronously in the guide groove, and the moving slider drives the driving gear 2 upward. At this time, the driving gear 2 is disengaged from the driving gear 1, and the moving belt 2 is stagnant at this time. As an auxiliary transmission tool, it increases the friction between it and the wood board, and improves the clamping force of the moving belt 1 and the moving belt 2 and the wood board.

[0022] 4. This wood board crack detection device has an overall structure and simple operation, has few electrical components in the device, has low energy consumption, and has high detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the main structure of a wood board crack detection device proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the back structure of a wood board crack detection device proposed by the present invention;

[0025] Figure 3 This is a side structural schematic diagram of a wood board crack detection device proposed by the present invention;

[0026] Figure 4 This is a schematic diagram of the internal structure of a chassis in a wood board crack detection device proposed by the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of an adjustment mechanism in a wood board crack detection device proposed by the present invention;

[0028] Figure 6 This is a partial structural schematic diagram of an adjustment mechanism in a wood board crack detection device proposed by the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of a moving mechanism in a wood board crack detection device proposed by the present invention;

[0030] Figure 8 The present invention provides a schematic diagram of the partial structure of a moving mechanism in a wood board crack detection device.

[0031] In the figure: 1, frame; 2, chassis; 3, moving belt 1; 4, moving belt 2; 5, fixed block; 6, adjustment mechanism; 7, motor 1; 8, motor 2; 9, moving mechanism; 10, support plate; 11, telescopic rod; 12, side frame 1; 13, side frame 2; 14, auxiliary roller; 15, rotating mechanism; 601, rack plate; 602, linkage gear; 603, button ring; 604, connecting plate; 605, Z-type plate; 606, guide strip; 901, fixed frame; 902, touch sensor; 903, guide rod 1; 904, guide rod 2; 905, fixed seat; 906, guide rail; 907, moving block; 908, X-ray shooting equipment; 1501, driving gear 1; 1502, guide shaft 1; 1503, guide shaft 2; 1504, slider; 1505, guide groove; 1506, driving gear 2. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are 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 cannot be understood as a limitation on the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Embodiment 1:

[0037] A wood board crack detection device, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, it includes a frame 1, the outer walls on both sides of the top of the frame 1 are fixedly connected with a side frame 12, and a top corner of the frame 1 is fixedly connected with a chassis 2, a moving belt 3 is arranged on the opposite side of the side frame 12, and a support plate 10 is fixedly connected to one side of the frame 1, and one side of the top of the support plate 10 is fixedly connected to the middle of the side frame 12, and telescopic rods 11 are fixedly connected to the front sides of the frame 1, and the top outer wall of the telescopic rod 11 is fixed with a side frame 2 13 by bolts;

[0038] A moving belt 2 4 is provided on one side of the side frame 2 13, and rollers are connected to the inner ends of the moving belts 1 3 and 2 4, and an auxiliary roller 14 is provided in the middle of the moving belts 1 3 and 2 4. A rotating mechanism 15 is provided inside the chassis 2, and a moving mechanism 9 is provided on one side in the middle of the front of the frame 1, and an X-ray shooting device 908 is provided at the moving end of the moving mechanism 9, and fixed blocks 5 are fixedly connected to both sides of the side frame 2 13, and an adjustment mechanism 6 is provided at the bottom of the fixed block 5.

[0039] In order to promote the stable transmission of the wooden board by the moving belt 1 3 and the moving belt 2 4; Figure 4 As shown, the rotating mechanism 15 includes a driving gear 1501, a guide shaft 1502, a guide shaft 1503, a slider 1504, a guide groove 1505 and a driving gear 1506, and one side of the chassis 2 is fixedly connected to a motor 7 through a support plate, and the guide shaft 1502 is connected to the output end of the motor 7 through a thread, the driving gear 1501 is connected to the circumference of the guide shaft 1502 through a thread, and one end of the guide shaft 1502 is connected to the end of the roller on the inner side of the moving belt 3 through a thread;

[0040] The guide groove 1505 is provided on both sides of the top of the chassis 2, and an opening is provided on the top of the chassis 2, the slider 1504 is slidably connected to the inside of the guide groove 1505, the guide shaft 1503 is rotatably connected to the slider 1504, the driving gear 1506 is connected to the middle circumference of the guide shaft 1503 by threads, and the end of the guide shaft 1503 is connected to the end of the roller inside the moving belt 2 4 by threads, and the driving gear 1 1501 and the driving gear 2 1506 are meshed with each other;

[0041] Starting motor 1502 drives guide shaft 1502 to rotate, the rotating guide shaft 1502 drives driving gear 1501 to rotate, the rotating driving gear 1501 drives driving gear 2 1506 to rotate, the rotating driving gear 2 1506 drives guide shaft 2 1503 to rotate, the synchronously rotating guide shaft 1502 and guide shaft 2 1503 drive the rollers inside moving belt 1 3 and moving belt 2 4 to rotate, thereby making moving belt 1 3 and moving belt 2 4 move, when the wooden board passes through the middle of moving belt 1 3 and moving belt 2 4, the stability of the transportation of the wooden board is guaranteed, and the deviation of the wooden board during movement is avoided.

[0042] In order to make the cracks of wooden boards be detected synchronously during the transportation process, improve the detection efficiency and ensure the qualified rate of processing; Figure 7 and Figure 8 As shown, the moving mechanism 9 includes a fixing frame 901, a touch sensor 902, a guide rod 1 903, a guide rod 2 904, a fixing seat 905, a guide rail 906, a moving block 907 and an X-ray shooting device 908, and a mounting groove is provided on the middle outer wall of the front side of the frame 1, a motor 2 8 is fixed in the mounting groove by bolts, the guide rod 1 903 is connected to the circumference of the output end of the motor 2 8 by threads, and the bottom end of the guide rod 2 904 is rotatably connected to the top end of the guide rod 1 903;

[0043] The fixed frame 901 is fixedly connected to the top of one of the side frames 12, and the top of the other side frame 12 is fixedly connected with a reflector, and the guide rail 906 is connected to the inner side of the fixed frame 901 by bolts, and the touch sensor 902 is fixedly connected to the two inner ends of the fixed frame 901, and the moving block 907 is sleeved on the outer surface of the guide rail 906, and the moving block 907 and the guide rail 906 form a sliding fit, and the model of the touch sensor 902 is TTP223B; when the moving block 907 moves to the touch sensor 902, the touch sensor 902 transmits the touch information to the controller, and the controller controls the motor 28 to reverse, driving the moving block 907 to complete the reset.

[0044] The fixed seat 905 is fixedly connected to the bottom of the moving block 907, the top of the second guide rod 904 forms a rotational fit with the fixed seat 905, and the X-ray imaging device 908 is connected to the outer wall of one side of the moving block 907 by bolts. The model of the X-ray imaging device 908 is Cheetah EVO Plus;

[0045] By starting the motor 28 to drive the guide rod 1 903 to rotate, the rotating guide rod 1 903 drives the guide rod 2 904 to swing, and the top of the swinging guide rod 2 904 pulls the moving block 907 above the fixed seat 905 to slide horizontally on the guide rail 906, and the X-ray shooting device 908 located on the back of the moving block 907 moves horizontally. At this time, the X-ray shooting device 908 is started to perform X-ray projection imaging on the wooden board to display the cracks and cracks in the wooden board, help detect the position, shape and size of the cracks, as well as the length, depth and density of the cracks, provide a basis for the quality control and quality evaluation of the wooden board, not only realize the crack detection function while conveying the wooden board, but also complete the rapid and accurate discovery of crack defects in the wooden board, help production enterprises to repair problems in time, improve product quality and market competitiveness, and reduce waste in the production of wooden boards and reduce production costs.

[0046] Working principle: start the motor 1502 to rotate the guide shaft 1502, the rotating guide shaft 1502 drives the driving gear 1501 to rotate, the rotating driving gear 1501 drives the driving gear 2 1506 to rotate, the rotating driving gear 2 1506 drives the guide shaft 2 1503 to rotate, the synchronously rotating guide shaft 1502 and guide shaft 2 1503 drive the rollers inside the moving belt 1 3 and the moving belt 2 4 to rotate, so that the moving belt 1 3 and the moving belt 2 4 move, when the wooden board passes through the middle of the moving belt 1 3 and the moving belt 2 4, the stability of the transportation of the wooden board is guaranteed;

[0047] During this period, the guide rod 1 903 is driven to rotate by starting the motor 2 8, and the rotating guide rod 1 903 drives the guide rod 2 904 to swing, and the top of the swinging guide rod 2 904 pulls the moving block 907 above the fixed seat 905 to slide horizontally on the guide rail 906, and the X-ray imaging device 908 located on the back of the moving block 907 moves horizontally. At this time, the X-ray imaging device 908 is started to perform X-ray projection imaging of the wooden board to display the cracks and cracks in the wooden board, and help detect the position, shape and size of the cracks, as well as the parameters of the length, depth and density of the cracks.

[0048] Embodiment 2:

[0049] A wood board crack detection device, such as Figure 5 , Figure 6As shown, in order to adjust the distance between the moving belt 1 3 and the moving belt 2 4 to meet the requirements of conveying wooden boards, the adjusting mechanism 6 includes a rack plate 601, a linkage gear 602, a button ring 603, a connecting plate 604, a Z-shaped plate 605 and a guide bar 606, and the Z-shaped plate 605 is fixed to both sides of the front of the frame 1 by bolts, and the rack plate 601 is fixedly connected to the bottom of the fixed block 5, a thread groove is provided on one side of the Z-shaped plate 605, and the button ring 603 is connected in the thread groove by threading, the linkage gear 602 is connected to the inner shaft circumference of the button ring 603 by threading, and the linkage gear 602 is meshed with the rack plate 601, the connecting plate 604 is connected to the rack plate 601 by bolts, the guide bar 606 is fixedly connected to the back of the rack plate 601, and a slide groove is provided on one side of the Z-shaped plate 605, and the slide groove and the guide bar 606 form a sliding fit;

[0050] By rotating the button ring 603 into the threaded groove, the rotating button ring 603 drives the interlocking gear 602 to rotate, and the rotating interlocking gear 602 drives the rack plate 601 to move upward, and at the same time, the guide bar 606 located on the back of the rack plate 601 slides vertically in the slide groove on one side of the Z-shaped plate 605, thereby driving the moving belt 2 4 upward, and realizing the adjustment of the distance between the moving belt 1 3 and the moving belt 2 4. During this process, the slider 1504 slides synchronously in the guide groove 1505, and the moving slider 1504 drives the driving gear 2 1506 upward. At this time, the driving gear 2 1506 is out of meshing relationship with the driving gear 1 1501, and the moving belt 2 4 is now stagnant. As an auxiliary transmission tool, it increases the friction between it and the wooden board, and improves the clamping force between the moving belt 1 3 and the moving belt 2 4 and the wooden board.

[0051] 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 disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wood board crack detection device, comprising a frame (1), characterized in that: A top corner of the frame (1) is fixedly connected to a chassis (2), and the outer walls on both sides of the top of the frame (1) are fixedly connected to a side frame (12), a moving belt (3) is provided on the opposite side of the side frame (12), and a support plate (10) is fixedly connected to one side of the frame (1), and telescopic rods (11) are fixedly connected to both sides of the front of the frame (1), and a side frame (13) is fixedly connected to the top outer wall of the telescopic rod (11) by bolts; A moving belt 2 (4) is arranged on the opposite side of the side frame 2 (13); the inner ends of the moving belt 1 (3) and the moving belt 2 (4) are connected to rollers in a transmission manner; an auxiliary roller (14) is arranged in the middle of the moving belt 1 (3) and the moving belt 2 (4); a rotating mechanism (15) is arranged inside the chassis (2); a moving mechanism (9) is arranged on the middle side of the front of the frame (1); an X-ray photographing device (908) is arranged at the moving end of the moving mechanism (9); fixed blocks (5) are fixedly connected to the two sides of the side frame 2 (13); and an adjusting mechanism (6) is arranged at the bottom of the fixed block (5).

2. A wood board crack detection device according to claim 1, characterized in that: The rotating mechanism (15) comprises a driving gear 1 (1501), a guide shaft 1 (1502), a guide shaft 2 (1503), a slider (1504), a guide groove (1505) and a driving gear 2 (1506), and one side of the chassis (2) is fixedly connected to a motor 1 (7) via a support plate, and the guide shaft 1 (1502) is arranged at the output end of the motor 1 (7), the driving gear 1 (1501) is connected to the circumference of the guide shaft 1 (1502) via a thread, and one end of the guide shaft 1 (1502) is connected to the end of the roller on the inner side of the moving belt 1 (3) via a thread.

3. A wood board crack detection device according to claim 2, characterized in that: The guide groove (1505) is provided on both sides of the top of the chassis (2), and an opening is provided on the top of the chassis (2). The slider (1504) is slidably connected to the inside of the guide groove (1505), the guide shaft (1503) is rotatably connected to the slider (1504), the driving gear (1506) is connected to the middle circumference of the guide shaft (1503) by means of threads, and the end of the guide shaft (1503) is connected to the end of the roller on the inner side of the moving belt (4) by means of threads, and the driving gear (1501) and the driving gear (1506) are meshed with each other.

4. A wood board crack detection device according to claim 1, characterized in that: The moving mechanism (9) comprises a fixed frame (901), a touch sensor (902), a guide rod 1 (903), a guide rod 2 (904), a fixed seat (905), a guide rail (906), a moving block (907) and an X-ray photographing device (908), and a mounting groove is provided on the middle outer wall of the front side of the frame (1), a motor 2 (8) is arranged in the mounting groove, the guide rod 1 (903) is arranged on the circumference of the output end of the motor 2 (8), and the bottom end of the guide rod 2 (904) is rotatably connected to the top end of the guide rod 1 (903).

5. A wood board crack detection device according to claim 4, characterized in that: The fixed frame (901) is fixedly connected to the top of one of the side frames (12), the top of the other side frame (12) is fixedly connected with a reflector, and the guide rail (906) is arranged on the inner side of the fixed frame (901), the touch sensor (902) is fixedly connected to the two inner ends of the fixed frame (901), the moving block (907) is sleeved on the outer surface of the guide rail (906), and the moving block (907) and the guide rail (906) form a sliding fit.

6. A wood board crack detection device according to claim 4, characterized in that: The fixed seat (905) is fixedly connected to the bottom of the moving block (907), the top of the second guide rod (904) forms a rotational fit with the fixed seat (905), and the X-ray shooting device (908) is arranged on an outer wall of one side of the moving block (907).

7. A wood board crack detection device according to claim 1, characterized in that: The adjustment mechanism (6) comprises a rack plate (601), a linkage gear (602), a button ring (603), a connecting plate (604), a Z-shaped plate (605) and a guide bar (606), wherein the Z-shaped plate (605) is arranged on both sides of the front of the frame (1), and the rack plate (601) is fixedly connected to the bottom of the fixed block (5).

8. A wood board crack detection device according to claim 7, characterized in that: A thread groove is provided on one side of the Z-shaped plate (605), and the button ring (603) is arranged in the thread groove, and the linkage gear (602) is arranged on the inner shaft circumference of the button ring (603).

9. A wood board crack detection device according to claim 7, characterized in that: The linkage gear (602) and the rack plate (601) are meshed with each other, the connecting plate (604) and the rack plate (601) are fixedly connected to each other, and the guide bar (606) is fixedly connected to the back side of the rack plate (601).

10. A wood board crack detection device according to claim 7, characterized in that: A sliding groove is provided on one side of the Z-shaped plate (605), and the sliding groove forms a sliding fit with the guide strip (606).

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