A detection device and method for detecting wood moisture
Through the probe protection design of mechanical linkage and pneumatic transmission, the problem of easy probe contamination in dirty and messy environments for wood moisture detection equipment is solved, achieving high-precision and long-life detection results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- YANCHENG KECHENG OPTOELECTRONICS TECH
- Filing Date
- 2026-04-25
- Publication Date
- 2026-06-12
AI Technical Summary
Existing wood moisture testing equipment is prone to probe contamination in environments with high dust levels and abundant sawdust and impurities, resulting in large deviations and poor repeatability of test data, as well as easy damage and shortened service life.
The device employs a mechanical linkage design that integrates the humidity meter, housing, probe, sleeve cover, and protective components. Through the folded tube, airbag, and airway structure, it achieves all-round isolation and protection of the probe and mechanical cleaning, preventing the adhesion of impurities. Combined with pneumatic linkage transmission, it performs automatic wiping and blowing.
It effectively isolates impurities and contaminants, ensures stable probe contact, improves detection accuracy and repeatability, extends equipment lifespan, and adapts to high-frequency detection needs under complex working conditions.
Smart Images
Figure CN122193311A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of wood moisture detection technology, specifically a detection device and method for detecting wood moisture. Background Technology
[0002] Timber moisture content testing is a crucial process in timber processing, furniture manufacturing, outdoor preservative-treated wood installation, and timber storage quality inspection. Timber moisture testing equipment is widely used in various work scenarios such as timber mills, processing workshops, and outdoor construction sites. Existing timber moisture testing equipment is mainly divided into electronic testing equipment and traditional simple mechanical testing equipment. The core testing component of both is the front-end detection probe, which collects and detects timber moisture content parameters by contacting or penetrating the surface of the wood.
[0003] In actual working conditions, wood inspection is mostly concentrated in processing workshops and open-air sites with high dust levels, a lot of sawdust and impurities, and a dirty and messy environment. Moreover, the quality inspection operation is characterized by continuous and high-frequency repetitive testing. During the testing process, when the probe repeatedly contacts and punctures the wood, fine impurities such as sawdust, wood powder, resin, wood pulp stains, and environmental dust on the wood surface are very easy to adhere to and accumulate on the probe surface, probe gaps, and probe contact end face.
[0004] Most probes in existing conventional testing equipment have an exposed structure and lack targeted anti-contamination and isolation protection designs. After long-term continuous operation, the attached fine debris will solidify and clump together. On the one hand, this will cause poor probe contact and probe puncture jamming, changing the actual contact state between the probe and the wood, directly interfering with the testing benchmark, resulting in large deviations and poor repeatability of moisture content test data. On the other hand, the accumulation of contaminants will aggravate probe wear and jamming, accelerate probe aging and damage, and shorten the service life of components. Therefore, improvements are needed. Summary of the Invention
[0005] To address the problems mentioned in the background section, this invention provides a detection device and method for detecting the moisture content of wood.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a detection device for detecting the moisture content of wood, comprising a moisture meter and a first sleeve cover and a second sleeve cover nested together, the moisture meter comprising a housing and a probe fixed to the housing for detecting the moisture content of wood; further comprising: A protective component is disposed inside the first sleeve cover; The movable component is installed inside the second sleeve cover and is at the same level as the protective component; The movable component includes a positioning bracket fixed to the inner wall of the first sleeve cover. Both ends of the top surface of the positioning bracket are fixed with connecting vertical rods. The upper end of the connecting vertical rod is slidably connected to a sliding horizontal rod. The bottom end of the sliding horizontal rod is rotatably connected to an abutment through a fixed seat. The abutting component also includes a cylindrical shell rotatably connected to the fixed base. The cylindrical shell is threaded onto the positioning bracket. Corrugated pipes and a second folded compression airbag are respectively installed at the upper and lower ends of the cylindrical shell. The two ends of the corrugated pipes and the second folded compression airbag are rotatably connected to the cylindrical shell and the positioning bracket, respectively. The bottom end of the second folded compression airbag is connected to an air outlet ring pipe fixedly connected to the cylindrical shell.
[0007] Preferably, a second spring for resetting the cylinder shell is sleeved on the outer wall of the cylinder shell. The second spring is located inside the bellows, and its two ends are rotatably connected to the cylinder shell and the positioning bracket, respectively.
[0008] Preferably, the interior of the cylindrical shell is provided with a conical cavity for the probe to enter, and a conical wiping element is bonded inside the conical cavity; The conical wiping component is bonded to the conical cavity only at its four edges.
[0009] Preferably, the interior of the cylindrical shell is provided with a first air passage communicating with the bellows, and the interior of the cylindrical shell is provided with a second air passage for communicating with the first air passage and the conical cavity; When the bellows is compressed, the gas inside it is transported to the interior of the conical cavity through the first and second air passages, causing the conical cavity to expand and fit tightly against the probe detection area.
[0010] Preferably, the middle end of the sliding crossbar is rotatably connected to a fixing plate via a rotating shaft, the fixing plate is fixed to the second sleeve cover, and a spring plate for resetting is sleeved at the connection end between the rotating shaft and the sliding crossbar. The bottom end of the sliding crossbar is rotatably connected to the fixed base.
[0011] Preferably, the protective assembly includes a guide bracket fixed inside the first sleeve cover, and both ends of the guide bracket are rotatably connected to a plurality of vertical plates via connecting rod hinges, and the vertical plates are slidably connected inside the first sleeve cover. A folding tube is fixedly connected to the middle area of the two vertical plates, and a first spring is movably sleeved on the outside of the folding tube in the middle of the two vertical plates.
[0012] Preferably, an arc-shaped airbag is fixedly connected to the bend of the inner wall of the folded tube, and multiple air grooves communicating with the inner cavity of the arc-shaped airbag are opened at the bend of the inner cavity of the folded tube.
[0013] Preferably, the vertical plate is provided with an air supply pipe for connecting the folded air groove and the first folded compressed air bag.
[0014] Preferably, a plurality of abutments corresponding to the positions of the connecting rod hinge are movably inserted into one side of the housing, and placement cavities for accommodating the abutments are provided on both sides of the housing; The top of the abutment is provided with an angled edge for abutting the connecting end of the connecting rod hinge; A sealing cover is installed on the outer wall of the connection end between the first sleeve cover and the second sleeve cover.
[0015] This application also proposes a method for detecting the moisture content of wood, the method being as follows: S1. Pull the first sleeve cover outward from the housing, pull the stop block outward to detach it from the housing, and place the pulled-out stop block inside the placement cavity; S2. Insert the probe into the wood to be tested, and output current to the two probes through the internal circuit of the housing to collect the original electrical signals of resistance / capacitance between the wood in real time. The moisture content value is displayed in real time on the digital screen through the data processing signal module inside the housing. S3. After reading is complete, remove the probe, refresh the value to zero, insert the stop block back into the housing, and lock the first sleeve cover onto the outside of the housing to complete the test.
[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) By setting up a humidity meter, housing, probe, abutment block and first sleeve cover, connecting rod hinge, vertical plate, folding tube and other structures, the present invention can, during the assembly and use of the equipment, use the first sleeve cover to abutment block in conjunction with the vertical plate to pull the folding tube to unfold and extend, so that the probe is stored and confined inside the folding tube, effectively preventing sawdust, wood powder, floating dust and resin stains in the workshop from directly adhering to the probe surface and gaps, effectively avoiding the accumulation of impurities and contamination of the probe in a harsh and dirty working environment, and ensuring the stability of the probe contact state during multiple continuous tests.
[0017] (2) This invention achieves air pressure linkage transmission by setting up a folded tube, an arc-shaped airbag, a first folded compressed airbag, an air supply pipe, a second sleeve cover, a positioning bracket, a connecting vertical rod, a rotating shaft, etc., and by relying on mechanical extrusion. After the first folded compressed airbag is compressed, it introduces gas into the arc-shaped airbag so that it is in point form to fit the outer wall of the probe. This can not only form all-round isolation and protection for the probe, but also limit the probe from deviating and getting stuck. At the same time, with the help of the pressing linkage transmission structure of the second sleeve cover, mechanical cleaning triggering is achieved. No additional electricity or manual disassembly and wiping is required, which is suitable for high-frequency repetitive operation scenarios.
[0018] (3) By setting up a combination of structures such as a cylindrical shell, a bellows, a second spring, a conical wiping component, a first air passage, a second air passage, a conical cavity, and an air outlet ring pipe, the present invention utilizes the rotational displacement of the cylindrical shell to squeeze the bellows when the second sleeve cover is pressed, so that gas is filled into the conical cavity to drive the conical wiping component to expand and adhere to the outer wall of the probe, and completes all-round wiping and cleaning of the probe area in conjunction with the rotational motion; after releasing the press, the spring resets and links the second folded compressed air bag to blow air, realizing dual cleaning of wiping + airflow dust removal, which removes residual stubborn impurities to a large extent and greatly reduces cross-contamination.
[0019] (4) The present invention adopts a purely mechanical linkage disassembly and resetting design by setting a first spring, a placement cavity, a fixing plate, a fixing seat and a snap-fit connection structure, a sliding crossbar, and a cylinder shell rotation limiting structure. The first sleeve cover and the second sleeve cover are easy to disassemble and assemble. After disassembly, the folding tube automatically retracts and resets. The block can be stored inside the placement cavity, which will not interfere with the normal detection operation of the probe. The structure is compact and the operation is simple. At the same time, it can reduce the wear and corrosion of the probe by contaminants and extend the overall service life of the humidity meter.
[0020] (5) By integrating the isolation and protection structure, mechanical wiping structure, pneumatic purging structure and detachable sleeve protection components, this invention addresses the technical problems of probe contamination, large deviation of detection data and equipment jamming and damage during repeated testing in dirty and messy work sites. It effectively improves the accuracy of wood moisture content detection and the repeatability of detection data, and greatly enhances the adaptability and practicality of the equipment in complex working conditions such as wood processing plants and outdoor construction sites. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the subdivided structure of the humidity meter of the present invention; Figure 3 This is a schematic diagram of the structure of the protective component and the active component of the present invention; Figure 4 This is a schematic diagram of the structure of the first sleeve cover, the second sleeve cover, and the protective assembly of the present invention; Figure 5 This is a schematic diagram of the structure of the folded tube and probe of the present invention; Figure 6 This is a schematic diagram showing the subdivided structure of the active components of the present invention; Figure 7 for Figure 6 A magnified view of the structure at point A in the middle; Figure 8 for Figure 6 A magnified schematic diagram of the structure at point B in the middle; Figure 9 for Figure 6A magnified schematic diagram of the structure at point C in the middle; Figure 10 This is a schematic diagram of the structure of the guide bracket and the second folding compression airbag of the present invention; Figure 11 This is a schematic diagram of the structure of the folded tube and positioning bracket of the present invention; Figure 12 for Figure 11 A magnified schematic diagram of the structure at point D in the middle; Figure 13 This is a detailed structural diagram of the abutment component of the present invention; Figure 14 This is a schematic diagram of the structure of the contact element and the positioning bracket of the present invention.
[0022] In the picture: 100. Humidity meter; 110. Housing; 120. Probe; 130. Abutment; 140. Placement cavity; 200. First sleeve cap; 300. Second sleeve cap; 400. Protective component; 410. Guide bracket; 420. Linkage hinge; 430. Vertical plate; 440. First spring; 450. Folding tube; 460. Arc-shaped airbag; 470. First folding compression airbag; 500. Movable component; 510. Positioning bracket; 520. Connecting vertical rod; 530. Rotating shaft; 540. Spring plate; 550. Fixing plate; 560. Fixing base; 570. Abutting component; 571. Cylinder shell; 572. First air passage; 573. Bellows; 574. Second spring; 575. Second air passage; 576. Conical cavity; 577. Conical wiping component; 578. Second folded compression airbag; 579. Air outlet ring pipe; 580. Sliding crossbar. Detailed Implementation
[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0024] like Figures 1 to 14 As shown, the present invention provides a detection device for detecting the moisture content of wood, including a moisture meter 100 and a first sleeve cover 200 and a second sleeve cover 300 that are nested together. The moisture meter 100 includes a housing 110 and a probe 120 fixed to the housing 110 for detecting the moisture content of wood; it also includes: Protective component 400 is disposed inside the first sleeve cover 200; The movable component 500 is installed inside the second sleeve cover 300 and is at the same level as the protective component 400; The movable component 500 includes a positioning bracket 510 fixed to the inner wall of the first sleeve cover 200. Both ends of the top surface of the positioning bracket 510 are fixed to a connecting vertical rod 520. The upper end of the connecting vertical rod 520 is slidably connected to a sliding horizontal rod 580. The bottom end of the sliding horizontal rod 580 is rotatably connected to an abutment 570 through a fixed seat 560. The contact member 570 also includes a cylindrical shell 571 rotatably connected to the fixed base 560. The cylindrical shell 571 is threaded onto the positioning bracket 510. Corrugated pipes 573 and second folded compression airbags 578 are respectively installed at the upper and lower ends of the cylindrical shell 571. The two ends of the corrugated pipes 573 and the second folded compression airbags 578 are rotatably connected to the cylindrical shell 571 and the positioning bracket 510 respectively. The bottom end of the second folded compression airbag 578 is connected to an air outlet ring pipe 579 fixedly connected to the cylindrical shell 571.
[0025] The above solution enables coordinated operation between the movable component 500 and the protective component 400. The positioning bracket 510 provides stable support for the entire movable component 500. The connecting vertical rod 520 provides precise limiting and guiding for the sliding horizontal rod 580, ensuring that the sliding horizontal rod 580 drives the contact component 570 to move smoothly. The threaded engagement between the cylindrical shell 571 and the positioning bracket 510 allows for the rotational displacement of the cylindrical shell 571, which in turn drives the bellows 573 and the second folded compression airbag 578 to move synchronously. When the bellows 573 is compressed, it generates air pressure driving force to power the wiping cleaning of the probe 120. The system provides power support, and the second folded compressed air bag 578, after being compressed, can spray air through the air outlet ring pipe 579 to perform a secondary purging of the probe area of the wiped probe 120, effectively removing residual sawdust, wood powder and other impurities. This effectively solves the problem of probe contamination and reduced detection accuracy caused by repeated operation in dirty and messy places in the existing technology. At the same time, the overall structure adopts a pure mechanical linkage design, which does not require additional power drive. It is suitable for harsh working scenarios with no power supply and high dust, such as wood processing plants and outdoor construction sites, ensuring that the equipment can operate continuously at high frequency and extending the service life of the probe 120 and the humidity meter 100.
[0026] It is worth noting that the bellows 573 and the second folded compression airbag 578 are rotatably connected to the cylinder shell 571 and the positioning bracket 510 at both ends, respectively, through a rotatable connection between the annular groove and the annular block. This is a conventional setting and will not be described in detail here.
[0027] The outer wall of the cylindrical shell 571 is fitted with a second spring 574 for resetting the cylindrical shell 571. The second spring 574 is located inside the bellows 573, and the two ends of the second spring 574 are rotatably connected to the cylindrical shell 571 and the positioning bracket 510, respectively.
[0028] Using the above solution: the second spring 574 can realize the automatic reset of the cylinder shell 571. When the pressure on the second sleeve cover 300 is released, the compressed second spring 574 releases its elasticity, driving the cylinder shell 571 to rotate in the opposite direction and reset, thereby linking the bellows 573 and the second folded compression airbag 578 to reset, ensuring that the contact part 570 can repeatedly perform the wiping and cleaning operation of the probe 120, which is suitable for the working conditions of high frequency repeated detection. Meanwhile, the second spring 574 is located inside the bellows 573, which can prevent impurities such as wood chips and dust from adhering to the spring surface and causing jamming, ensuring the flexibility and stability of spring reset, further improving the reliability of the equipment in dirty and messy environments, and avoiding problems such as incomplete probe cleaning and large deviations in detection data due to poor reset.
[0029] The inside of the cylindrical shell 571 is provided with a conical cavity 576 for the probe 120 to enter, and a conical wiping element 577 is bonded inside the conical cavity 576; The conical wiping component 577 is bonded to the conical cavity 576 only at its four edges.
[0030] The above solution allows the conical cavity 576 to precisely fit the shape of the probe 120, ensuring that the probe 120 can smoothly enter and fully contact the conical wiping component 577. The conical wiping component 577 is bonded to the conical cavity 576 only at its four edges, allowing its central part to freely expand and contract. When gas is filled into the conical cavity 576, the conical wiping component 577 expands towards the center and adheres tightly to the outer wall of the probe 120, achieving comprehensive wiping of the probe area and removing impurities such as sawdust and resin stains adhering to the surface and crevices of the probe 120. This prevents impurity accumulation from causing poor probe contact and large deviations in detection data. Simultaneously, this bonding method prevents the conical wiping component 577 from being unable to fully deform due to overall fixation, ensuring a tight fit with the probe 120 during wiping, improving the wiping and cleaning effect, and meeting the continuous cleaning needs of the probe during repeated operations.
[0031] The interior of the cylindrical shell 571 is provided with a first air passage 572 that communicates with the bellows 573, and the interior of the cylindrical shell 571 is provided with a second air passage 575 that connects the first air passage 572 and the conical cavity 576. When the bellows 573 is compressed, the gas inside it is transported to the interior of the conical cavity 576 through the first air passage 572 and the second air passage 575, so that the conical cavity 576 expands and fits tightly against the detection area of the probe 120.
[0032] The above scheme employs a first airway 572 and a second airway 575 to form a complete air pressure transmission channel, which can accurately deliver the gas generated by the pressure of the bellows 573 to the inside of the conical cavity 576, achieving effective air pressure transmission. After the gas is filled, it causes the conical cavity 576 and the conical wiping element 577 inside to expand, making it closely adhere to the detection area of the probe 120. Combined with the rotational movement of the shell 571, it can achieve all-round, no-dead-angle wiping of the probe 120, effectively removing contaminants from the probe surface. This air pressure transmission method is a purely mechanical structure, requiring no additional power source, and is easy to operate. It can quickly complete probe cleaning before and after each test, avoiding cross-contamination and ensuring the accuracy and repeatability of multiple consecutive tests.
[0033] The middle end of the sliding crossbar 580 is rotatably connected to a fixing plate 550 via a rotating shaft 530. The fixing plate 550 is fixed to the second sleeve cover 300, and a spring plate 540 for resetting is sleeved at the connection end between the rotating shaft 530 and the sliding crossbar 580. The bottom end of the sliding crossbar 580 is rotatably connected to the fixed base 560.
[0034] The above solution is adopted as follows: When the second sleeve cover 300 is pressed, the sliding crossbar 580 can be rotated around the connection point through the fixed plate 550 and the rotating shaft 530, thereby driving the fixed seat 560 to drive the contact member 570 to move, so as to realize the wiping and cleaning of the probe 120; the spring plate 540 can drive the sliding crossbar 580 to quickly reset after the pressing is canceled, ensuring that the moving component 500 returns to the initial state, which is convenient for the next inspection operation; the rotational connection between the sliding crossbar 580 and the fixed seat 560 can adapt to the rotational displacement of the cylinder shell 571, avoid the phenomenon of jamming or jamming during the transmission process, ensure the smooth transmission of the entire moving component 500, and improve the stability and reliability of the equipment in high-frequency repetitive operation.
[0035] The protective component 400 includes a guide bracket 410 fixed inside the first sleeve cover 200. Both ends of the guide bracket 410 are rotatably connected to a plurality of vertical plates 430 via connecting rod hinges 420. The vertical plates 430 are slidably connected inside the first sleeve cover 200. A folding tube 450 is fixedly connected to the middle area of the two vertical plates 430, and a first spring 440 is movably sleeved on the outside of the folding tube 450 in the middle of the two vertical plates 430.
[0036] The above solution works as follows: When the first sleeve cover 200 is fitted onto the outside of the housing 110, the abutment block 130 abuts against the connecting rod hinge 420, which can drive the vertical plate 430 to slide along the inner wall of the first sleeve cover 200, thereby pulling the folding tube 450 to unfold and extend, storing the probe 120 inside the folding tube 450, achieving isolation and protection for the probe 120, and preventing impurities such as sawdust and floating dust in the detection gap from adhering to the surface of the probe 120; when the first sleeve cover 200 is disassembled, the first spring 440 can drive the two vertical plates 430 to reset in opposite directions, causing the folding tube 450 to retract, without affecting the normal detection operation of quickly removing the probe 120; this structure can effectively isolate pollution, extend the service life of the probe 120, and adapt to the continuous operation needs of dirty and messy places.
[0037] An arc-shaped airbag 460 is fixedly connected to the bend in the inner wall of the folded tube 450, and multiple air grooves communicating with the inner cavity of the arc-shaped airbag 460 are opened at the bend in the inner cavity of the folded tube 450.
[0038] An air supply pipe is provided on the vertical plate 430 for connecting the air slot of the folded tube 450 and the first folded compression airbag 470.
[0039] The above scheme allows for the connection between the first folded compression airbag 470, the air groove of the folded tube 450, and the arc-shaped airbag 460 via the gas delivery pipeline, forming a complete air pressure transmission path. During the closing process of the first sleeve cover 200, the first folded compression airbag 470 is compressed by the shell 110, and the gas inside can be precisely delivered to the inside of the arc-shaped airbag 460 through the gas delivery pipeline and air groove, driving the arc-shaped airbag 460 to expand and fit against the outer wall of the probe 120, achieving simultaneous protection and limiting. This air pressure linkage design requires no additional power and can be triggered by the closing action of the first sleeve cover 200, making it easy to operate. It also ensures the stability of the expansion force of the arc-shaped airbag 460, guaranteeing the protective effect on the probe 120 without damaging the probe 120 due to excessive compression, further improving the practicality and reliability of the equipment.
[0040] A plurality of abutments 130 corresponding to the positions of the connecting rod hinge 420 are movably inserted into one side of the housing 110, and placement cavities 140 for accommodating the abutments 130 are provided on both sides of the housing 110. The top of the abutment 130 is provided with an angle for abutting the connecting end of the connecting rod hinge 420; A sealing cover is installed on the outer wall of the connection end of the first sleeve cover 200 and the second sleeve cover 300.
[0041] The above solution allows the angled top of the abutment 130 to smoothly contact the connecting end of the connecting rod hinge 420 when the first sleeve cover 200 is fitted, causing the connecting rod hinge 420 to rotate. This, in turn, drives the vertical plate 430 to slide and the folding tube 450 to unfold, achieving automatic triggering of the protective component 400 without additional manual operation, thus improving the ease of equipment assembly. The placement cavity 140 can be used to store the abutment 130 after the equipment is disassembled, preventing the abutment 130 from being lost or contaminated, while not interfering with the normal detection operation of the probe 120. The sealing cover can seal the connecting end of the first sleeve cover 200 and the second sleeve cover 300, preventing impurities such as sawdust, dust, and moisture from entering the sleeve and contaminating the protective component 400, the moving component 500, and the probe 120. This further enhances the equipment's anti-contamination capability, ensuring that the equipment can still work stably in dirty and humid working environments, guaranteeing the accuracy of the detection data and the service life of the equipment.
[0042] This application also proposes a method for detecting the moisture content of wood, the method being as follows: S1. Pull the first sleeve cover 200 outward from the housing 110, pull out the abutment block 130 outward so that the abutment block 130 is detached from the housing 110, and place the pulled-out abutment block 130 inside the placement cavity 140. S2. Insert the probe 120 into the wood to be tested. Output current to the two probes 120 through the internal circuit of the housing 110. Collect the original electrical signal of resistance / capacitance between the wood in real time. Display the moisture content value in real time on the digital screen through the data processing signal module inside the housing 110. S3. After reading is completed, remove probe 120, refresh the value to zero, insert block 130 back into housing 110, and lock the first sleeve cover 200 onto the outside of housing 110 to complete the test.
[0043] Working principle and usage process of this invention: Installation of the first sleeve cover 200, the second sleeve cover 300, and the humidity meter 100: Insert the abutment 130 onto the housing 110, and hold the first sleeve cap 200 to gradually cover the outside of the housing 110. At this time, the connecting end of the connecting rod hinge 420 will be gradually abutted by the oblique angle of the abutment 130, so that the two vertical plates 430 will continuously pull the folding tube 450 to unfold, and the length of the folding tube 450 will continuously increase. At this time, the probe 120 will be gradually inserted into the middle area of the folding tube 450. As the folded tube 450 unfolds, the first folded compression airbag 470 comes into contact with one side of the housing 110. As the folded tube 450 unfolds, the first folded compression airbag 470 is compressed. The gas inside the compressed first folded compression airbag 470 enters the folded tube 450 through the gas delivery pipe and fills the arc-shaped airbag 460, causing it to expand. At this time, the multiple arc-shaped airbags 460 located inside the folded tube 450 will abut against the outer wall of the probe 120 in a point-like manner to provide shock absorption and protection. The first sleeve cap 200 is then connected to the outer wall of the housing 110 using existing locking mechanisms; Pressing the second sleeve cover 300 causes the fixing plate 550 to drive the rotating shaft 530 to move due to the fixing of the first sleeve cover 200. At this time, due to the limiting guidance of the connecting vertical rod 520, one end of the sliding horizontal rod 580 will push the cylinder shell 571 downward through the fixing seat 560. Since the cylinder shell 571 is threaded onto the positioning bracket (510), as the cylinder shell 571 moves downward, the cylinder shell 571 will rotate inside the positioning bracket 510. At this time, the detection area of the probe 120 is already located inside the conical wiping piece 577. During the displacement process, the cylindrical shell 571 compresses the bellows 573, causing the gas inside to enter the conical cavity 576 through the first air passage 572 and the second air passage 575. At this time, the second spring 574 is in a compressed state and continuously fills the cavity with gas, causing the conical wiping component 577 to expand and adhere tightly to the outer wall of the probe 120. It should be noted that the specific wiping component used for the conical wiping component 577 can be selected according to the actual situation, but it is necessary to ensure that the conical cavity 576 has a wiping function. When the inner wall of the conical cavity 576 is filled with gas, the conical wiping component 577 can be blown towards the center and expand. Under the action of the rotation of the cylindrical shell 571, the conical wiping component 577 can fully and automatically wipe and clean the probe area of the probe 120. When the pressure on the second sleeve cap 300 is released, the spring at the connection between the first sleeve cap 200 and the second sleeve cap 300 will release its elasticity. Figure 7 The second sleeve cover 300 is reset, and the compressed second spring 574 releases its elasticity, causing the cylinder shell 571 to reset in the opposite direction. At this time, the second folding compression airbag 578 is compressed, and the gas inside it will be sprayed out through the air outlet ring pipe 579 to the area that was just wiped by the conical wiping piece 577 on the probe 120, blowing away the residue at the wiping area and cleaning the probe 120 again. In this way, the probe 120 is automatically cleaned back and forth while the cover is closed.
[0044] Disassembly and separation of the first sleeve cover 200, the second sleeve cover 300, and the humidity meter 100: Pull the first sleeve cap 200 outward to detach it from the housing 110. The stop block 130 will release its contact with the connecting rod hinge 420. The first spring 440 will drive the two vertical plates 430 to return to their original positions. The first folding compression airbag 470 will also no longer contact the housing 110. The gas inside the folding tube 450 will return to the inside of the first folding compression airbag 470. The length of the folding tube 450 will shrink again, so as not to affect the removal of the probe 120 from the inside of the first sleeve cap 200, making it easy to remove. Then, pull the stop block 130 out of the housing 110 and place it inside the placement cavity 140. In this way, the probe 120 can be effectively protected from shock without affecting the use of the cap.
[0045] After disassembly, probe 120 was used for testing.
[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A detection device for detecting the moisture content of wood, comprising a moisture meter (100) and a first sleeve cover (200) and a second sleeve cover (300) nested together, wherein the moisture meter (100) comprises a housing (110) and a probe (120) fixed to the housing (110) for detecting the moisture content of wood; characterized in that: Also includes: A protective component (400) is disposed inside the first sleeve cover (200); The movable component (500) is installed inside the second sleeve cover (300) and is at the same level as the protective component (400); The movable component (500) includes a positioning bracket (510) fixed to the inner wall of the first sleeve cover (200). Both ends of the top surface of the positioning bracket (510) are fixed to a connecting vertical rod (520). The upper end of the connecting vertical rod (520) is slidably connected to a sliding horizontal rod (580). The bottom end of the sliding horizontal rod (580) is rotatably connected to an abutment (570) through a fixed seat (560). The contact member (570) also includes a cylindrical shell (571) rotatably connected to the fixed base (560). The cylindrical shell (571) is threaded onto the positioning bracket (510). A bellows (573) and a second folded compression airbag (578) are respectively installed at the upper and lower ends of the cylindrical shell (571). The bellows (573) and the second folded compression airbag (578) are rotatably connected to the cylindrical shell (571) and the positioning bracket (510) respectively. The bottom end of the second folded compression airbag (578) is connected to an air outlet ring pipe (579) fixedly connected to the cylindrical shell (571).
2. The detection device for detecting wood moisture according to claim 1, characterized in that: The outer wall of the cylindrical shell (571) is fitted with a second spring (574) for resetting the cylindrical shell (571). The second spring (574) is located inside the bellows (573), and the two ends of the second spring (574) are rotatably connected to the cylindrical shell (571) and the positioning bracket (510) respectively.
3. The detection device for detecting wood moisture according to claim 1, characterized in that: The interior of the cylindrical shell (571) is provided with a conical cavity (576) for the probe (120) to enter, and a conical wiping component (577) is bonded inside the conical cavity (576). The conical wiping element (577) is bonded to the conical cavity (576) only at its four edges.
4. The detection device for detecting wood moisture according to claim 3, characterized in that: The interior of the cylindrical shell (571) is provided with a first air passage (572) that communicates with the bellows (573), and the interior of the cylindrical shell (571) is provided with a second air passage (575) that communicates with the first air passage (572) and the conical cavity (576). When the bellows (573) is compressed, the gas inside it is transported to the interior of the conical cavity (576) through the first air passage (572) and the second air passage (575), so that the conical cavity (576) expands and fits tightly against the detection area of the probe (120).
5. The detection device for detecting wood moisture according to claim 1, characterized in that: The middle end of the sliding crossbar (580) is rotatably connected to a fixing plate (550) via a rotating shaft (530). The fixing plate (550) is fixed to the second sleeve cover (300), and a spring plate (540) for resetting is sleeved at the connection end between the rotating shaft (530) and the sliding crossbar (580). The bottom end of the sliding crossbar (580) is rotatably connected to the fixed seat (560).
6. The detection device for detecting wood moisture according to claim 1, characterized in that: The protective assembly (400) includes a guide bracket (410) fixed inside the first sleeve cover (200). Both ends of the guide bracket (410) are rotatably connected to a plurality of vertical plates (430) via connecting rod hinges (420). The vertical plates (430) are slidably connected inside the first sleeve cover (200). A folding tube (450) is fixedly connected to the middle area of the two vertical plates (430), and a first spring (440) is movably sleeved on the outside of the folding tube (450) in the middle of the two vertical plates (430).
7. The detection device for detecting wood moisture according to claim 6, characterized in that: An arc-shaped airbag (460) is fixedly connected to the bend of the inner wall of the folded tube (450), and multiple air grooves communicating with the inner cavity of the arc-shaped airbag (460) are opened at the bend of the inner cavity of the folded tube (450).
8. The detection device for detecting wood moisture according to claim 7, characterized in that: An air supply pipe is provided on the vertical plate (430) for connecting the air groove of the folded tube (450) and the first folded compressed air bag (470).
9. The detection device for detecting wood moisture according to claim 1, characterized in that: A plurality of abutments (130) corresponding to the positions of the connecting rod hinge (420) are movably inserted into one side of the housing (110), and placement cavities (140) for accommodating the abutments (130) are provided on both sides of the housing (110). The top of the abutment (130) is provided with an angle for abutting the connecting end of the connecting rod hinge (420); A sealing cover is installed on the outer wall of the connection end of the first sleeve cover (200) and the second sleeve cover (300).
10. A method for detecting wood moisture content, applied to a detection device for detecting wood moisture content as described in any one of claims 1-9, characterized in that: The detection method is as follows: S1. Pull the first sleeve cover (200) outward from the housing (110), pull out the abutment block (130) outward to make the abutment block (130) separate from the housing (110), and place the pulled-out abutment block (130) inside the placement cavity (140); S2. Insert the probe (120) into the wood to be tested, and output current to the two probes (120) through the internal circuit of the housing (110). Collect the original electrical signal of resistance / capacitance between the wood in real time, and display the moisture content value in real time through the data processing signal module inside the housing (110) on the digital screen. S3. After reading is completed, remove the probe (120), refresh the value to zero, insert the stop block (130) back into the housing (110), and lock the first sleeve cover (200) onto the outside of the housing (110) to complete the test.