In-situ targeted liquid injection method and liquid injection device for ancient building wood components

Abstract

The application provides an in-situ targeted liquid injection method and device for ancient building wood components, and the injection method comprises the following steps: drilling an injection catheter drill into a wood component and monitoring the drilling resistance in real time; when the monitored drilling resistance decreases by a preset amplitude, it is determined that the injection catheter drill reaches an internal disease site of the wood component, the injection catheter drill is stopped and partially located at the internal disease site; and liquid medicine is injected into the internal disease site through the injection catheter drill, so that the technical problem that the internal disease site of the wood component building is difficult to prevent and control is solved.

Description

Technical Field

[0001] This invention relates to the technical field of timber structure preservation, and in particular to an in-situ targeted liquid injection method and device for ancient building timber components. Background Technology

[0002] Timber structures use timber as their main structural frame. Timber itself contains a large amount of organic matter such as cellulose and lignin, making it susceptible to pests and diseases, leading to problems such as decay and insect infestation, which compromise the structural safety of the timber structure. Various wood preservatives, such as preservatives and insecticides, are typically used to protect timber structural components and prevent the occurrence and development of pests and diseases. The main application methods include spraying, pressure / under pressure impregnation, and physical diffusion. However, for some internally decayed or insect-infested components, but whose damage level does not meet the replacement criteria, or for columns and beams located within walls, pest and disease control cannot be achieved through measures such as painting, dismantling and repairing, or replacement. Summary of the Invention

[0003] The purpose of this invention is to provide an in-situ targeted liquid injection method and device for ancient building wooden components, so as to solve the technical problem that the prevention and treatment of internal defects in wooden building components is quite difficult.

[0004] The above-mentioned objectives of the present invention can be achieved by the following technical solutions:

[0005] This invention provides an in-situ targeted liquid injection method for ancient architectural wooden components, comprising:

[0006] The injection guide drill bit is used to drill into the wooden structure, and the drilling resistance is monitored in real time;

[0007] When the monitored drilling resistance decreases by a preset amount, it is determined that the injection guide drill bit has reached the internal defect of the wooden component, causing the injection guide drill bit to stop and partially located at the internal defect.

[0008] The medicine is injected into the internal diseased area through the injection conduit drill bit.

[0009] In a preferred embodiment, the drilling resistance of the injection guide drill bit into the wooden component and real-time monitoring of the drilling resistance includes: indirectly monitoring the drilling resistance by monitoring the current or voltage of a first motor used to provide power to drive the injection guide drill bit to rotate, and / or indirectly monitoring the drilling resistance by monitoring the current or voltage of a second motor used to provide power to drive the injection guide drill bit to move.

[0010] In a preferred embodiment, the preset amplitude is when the monitored drilling resistance decreases to less than 30% of the average drilling resistance.

[0011] This invention provides an in-situ targeted liquid injection device for ancient building wooden components, used in the above-mentioned in-situ targeted liquid injection method for ancient building wooden components, comprising: an injection conduit drill bit and a drive mechanism, wherein the drive mechanism is connected to the injection conduit drill bit to drive the injection conduit drill bit to drill into the wooden component;

[0012] The injection conduit drill bit has a drill head and a liquid outlet at its head end, and a liquid inlet at its tail end. The injection conduit drill bit has a channel connecting the liquid outlet and the liquid inlet, and the liquid inlet can be connected to a drug injection device.

[0013] In a preferred embodiment, the injection conduit drill bit includes a tube body, the drill head is connected to the front end of the tube body, the liquid outlet is disposed on the tube body, and the outer diameter of the drill head is greater than or equal to the outer diameter of the tube body.

[0014] In a preferred embodiment, the liquid outlet section includes a plurality of circumferentially distributed liquid outlet holes disposed on the side wall of the tube body section.

[0015] In a preferred embodiment, the drill bit includes a central tooth and at least two side teeth, the central tooth and the side teeth being distributed along the diameter direction of the injection guide drill bit, and the side teeth being located on both sides of the central tooth.

[0016] In a preferred embodiment, the tip of the central tooth extends in front of the lateral tooth.

[0017] In a preferred embodiment, the tail end of the injection conduit drill bit has a drive section, and the injection conduit drill bit is detachably connected to the drive mechanism through the drive section.

[0018] In a preferred embodiment, the in-situ targeted liquid injection device for ancient building wooden components includes the liquid injection device, which can be detachably connected to the liquid inlet.

[0019] In a preferred embodiment, the in-situ targeted liquid injection device for ancient building wooden components includes a monitoring and positioning component, which is used to monitor the drilling resistance of the injection guide drill bit into the wooden component in real time.

[0020] In a preferred embodiment, the drive mechanism includes a first motor and a second motor. The first motor provides power to drive the injection guide drill bit to rotate, and the second motor provides power to drive the injection guide drill bit to move. The in-situ targeted liquid injection device for ancient building wooden components includes a monitoring and positioning component. The monitoring and positioning component is used to monitor the current or voltage of the first motor and / or the current or voltage of the second motor to indirectly monitor the drilling resistance of the injection guide drill bit into the wooden component in real time.

[0021] The features and advantages of this invention are:

[0022] During the drilling of wooden components using an injection-guided drill bit, the drilling resistance is positively correlated with the density of the wood. For internally damaged areas such as rot, insect infestation, or cracks, where the density is lower, the drilling resistance decreases significantly after the injection-guided drill bit enters. This invention locates internally damaged areas of the wooden component by monitoring changes in drilling resistance; and injects a medicinal solution into these areas using the injection-guided drill bit, ensuring precise delivery of the medicine.

[0023] Using the injection method provided by this invention, wooden components do not need to be removed from the building. The drill bit is used to locate the internal defects during drilling, and the injection solution is injected through the injection drill bit. This helps to ensure the accuracy of the injection location and achieves in-situ targeted injection. It can efficiently reinforce the internal holes and hidden cracks of wooden components, with less damage to the wooden components and the buildings they form, which is beneficial to the protection of wooden structural components of cultural relics buildings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram of one embodiment of the in-situ targeted liquid injection device for ancient building wooden components provided by the present invention;

[0026] Figure 2 for Figure 1 The diagram shows the working process of the in-situ targeted liquid injection device for ancient building wooden components being drilled into the wooden components.

[0027] Figure 3 for Figure 2 A schematic diagram omitting the outer casing;

[0028] Figure 4 A schematic diagram illustrating the operation of the in-situ targeted liquid injection device for ancient building wooden components provided by the present invention for injecting medicinal liquid;

[0029] Figure 5 and Figure 6 This is a schematic diagram of the injection conduit drill bit in the in-situ targeted liquid injection device for ancient building wooden components provided by the present invention.

[0030] Figure 7 This is a schematic diagram of the head end of the injection conduit drill bit in the in-situ targeted liquid injection device for ancient building wooden components provided by the present invention;

[0031] Figure 8 A schematic diagram of the tail end of the injection conduit drill bit in the in-situ targeted liquid injection device for ancient building wooden components provided by the present invention;

[0032] Figure 9 A schematic diagram of the control system of the in-situ targeted liquid injection device for ancient building wooden components provided by the present invention;

[0033] Figure 10 This is a schematic diagram of the in-situ targeted liquid injection method for ancient building wooden components provided by the present invention.

[0034] Explanation of icon numbers:

[0035] 10. Injection guide drill bit; 101. Tube body;

[0036] 11. Drill bit; 111. Center tooth; 112. Side tooth;

[0037] 12. Liquid outlet; 121. Liquid outlet;

[0038] 13. Liquid inlet section;

[0039] 14. Drive unit; 141. Card slot;

[0040] 20. Drive mechanism; 201. Support shell;

[0041] 21. First motor;

[0042] 22. Second motor; 23. Lead screw; 24. Lead screw slider; 25. Guide rail;

[0043] 30. Drug injection device;

[0044] 40. Wooden components; 41. Internal damaged parts. Detailed Implementation

[0045] 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.

[0046] Option 1

[0047] This invention provides an in-situ targeted liquid injection method for ancient architectural wooden components, such as... Figure 10 As shown, it includes:

[0048] Step S10: The injection guide drill bit 10 is inserted into the wooden component 40, and the drilling resistance is monitored in real time.

[0049] Step S20: When the monitored drilling resistance decreases by a preset amount, it is determined that the injection guide drill bit 10 has reached the internal defective part 41 of the wooden component 40, so that the injection guide drill bit 10 stops and is partially located in the internal defective part 41.

[0050] Step S30: Inject the medicine into the internal diseased area 41 through the injection guide drill bit 10.

[0051] During the drilling process of the injection guide drill bit 10 into the wooden component 40, the drilling resistance is positively correlated with the density of the wooden component 40. For internal diseased areas 41 that have suffered from rot, insect infestation, or cracking, the density is lower, and the drilling resistance will be significantly reduced after the injection guide drill bit 10 enters. The injection method provided by this invention locates the internal diseased areas 41 of the wooden component 40 by monitoring changes in drilling resistance; and injects the medicine into the internal diseased areas 41 through the injection guide drill bit 10 to accurately inject the medicine into the internal diseased areas 41.

[0052] Using the injection method provided by this invention, the wooden component 40 does not need to be removed from the building. During the drilling process, the drill bit 10 locates the internal defective part 41 and injects the medicine through the injection drill bit 10. This helps to ensure the accuracy of the medicine injection position and achieve in-situ targeted injection. It can efficiently reinforce the internal holes and hidden cracks of the wooden component 40, and cause less damage to the wooden component 40 and the building composed of the wooden component 40. This is beneficial to the protection of the wooden structural components of cultural relics buildings.

[0053] In one embodiment, in step S10, a first motor 21 and a second motor 22 are connected to the tail end of the injection guide drill bit 10. The first motor 21 is used to provide power to drive the injection guide drill bit 10 to rotate, and the second motor 22 is used to provide power to drive the injection guide drill bit 10 to move. The drilling resistance is indirectly monitored by monitoring the current or voltage of the first motor 21, and / or by monitoring the current or voltage of the second motor 22. The first motor 21 and the second motor 22 provide power for the drilling of the injection guide drill bit 10. When the resistance experienced by the injection guide drill bit 10 changes, the current and voltage of the first motor 21 and the second motor 22 will change accordingly. Therefore, the changes in the current and voltage of the first motor 21 and / or the second motor 22 can reflect the changes in drilling resistance. The drilling resistance can be characterized by the current and voltage of the first motor 21 and / or the second motor 22. The drilling resistance can be indirectly monitored by monitoring the current or voltage of the first motor 21 and / or the second motor 22. Since the current and voltage of the first motor 21 and the second motor 22 are relatively easy to detect, the difficulty of monitoring the drilling resistance is reduced.

[0054] In one embodiment, the current or voltage of the first motor 21 and / or the current or voltage of the second motor 22 can be converted, and the calculated value serves as a representation of the drilling resistance. Thus, by monitoring the current or voltage of the first motor 21 and / or the second motor 22 in real time, the real-time representation of the drilling resistance can be obtained. By monitoring the changes in the real-time representation of the drilling resistance, it can be determined whether the injection guide drill bit 10 has reached the internal defective part 41 of the wooden component 40. Calculating the drill bit resistance using the motor current and voltage can employ existing techniques, and the specific calculation method is not limited.

[0055] The preset range can be set based on experience, which is the range of change in drilling resistance of the injection guide drill bit 10 when it enters the internal diseased part 41 from the normal area of ​​the wooden component 40.

[0056] In one embodiment, the preset range is defined as the monitored drilling resistance decreasing to below 30% of the average drilling resistance. Because the density of wood in the internal diseased areas 41 (rotten, insect-infested, cracked, etc.) is lower than that of wood in its normal state, during the drilling of the wood component 40 by the injection guide drill bit 10, the drilling resistance experienced by the injection guide drill bit 10 changes as the wood density changes when it enters the internal diseased area 41. Therefore, the density of the drilling area can be determined based on the change in resistance. According to experimental tests, when the drilling resistance decreases to below 30% of the average drilling resistance, the area can be identified as the internal diseased area 41, requiring chemical treatment. The average drilling resistance is the resistance encountered when the injection guide drill bit 10 drills into the normal area of ​​the wood component 40. Since the drilling resistance fluctuates during drilling, decreasing or increasing by a small margin, the injection guide drill bit 10 is only considered to have reached the internal diseased area 41 of the wood component 40 when the monitored change in drilling resistance reaches the preset range, thus reducing misjudgment.

[0057] Option 2

[0058] This invention provides an in-situ targeted liquid injection device for ancient building wooden components, used to implement the above-mentioned in-situ targeted liquid injection method for ancient building wooden components, such as... Figures 1-8 As shown, the injection device includes an injection conduit drill bit 10 and a drive mechanism 20. The drive mechanism 20 is connected to the injection conduit drill bit 10 to drive the injection conduit drill bit 10 to drill into the wooden component 40. The head end of the injection conduit drill bit 10 has a drill head 11 and an outlet part 12, and the tail end of the injection conduit drill bit 10 has an inlet part 13. The injection conduit drill bit 10 has a channel connecting the outlet part 12 and the inlet part 13. The inlet part 13 can be connected to the drug injection device 30.

[0059] For internally damaged areas 41 that have become rotten, infested with insects, or cracked, the drilling resistance will be significantly reduced after the injection guide drill bit 10 is inserted. When using the in-situ targeted liquid injection device for ancient building wooden components provided by the present invention, the internally damaged areas 41 of the wooden component 40 can be located by monitoring the changes in drilling resistance; and the liquid output from the liquid injection device 30 is injected into the internally damaged areas 41 through the liquid outlet 12 of the injection guide drill bit 10.

[0060] When using the injection device provided by this invention, the wooden component 40 does not need to be removed from the building. During the drilling process, the drill bit of the insertion guide locates the internal defective part 41, and the injection guide drill bit 10 injects the medicine, which helps to ensure the accuracy of the injection position and realize in-situ targeted injection. It can efficiently reinforce the internal holes and hidden cracks of the wooden component 40, and cause less damage to the wooden component 40 and the building composed of the wooden component 40, which is beneficial to the protection of the wooden structural components of cultural relics buildings.

[0061] In one implementation, such as Figures 5-8 As shown, the injection guide drill bit 10 includes a tube body 101, a drill head 11 connected to the front end of the tube body 101, and a liquid outlet 12 disposed in the tube body 101. The outer diameter of the drill head 11 is greater than or equal to the outer diameter of the tube body 101. Preferably, the outer diameter of the drill head 11 is greater than the outer diameter of the tube body 101. During drilling, the drill head 11 cuts the wood, and the drilled hole diameter is larger than the outer diameter of the tube body 101. This facilitates the smooth discharge of the liquid through the liquid outlet 12, and the resulting gap can accommodate sawdust, facilitating its discharge and reducing drilling resistance. The outer diameter of the tube body 101 can be consistent or varied at various longitudinal positions.

[0062] Furthermore, the liquid outlet 12 includes a plurality of circumferentially distributed liquid outlet holes 121 disposed on the side wall of the tube body 101. The liquid is sprayed outward from each liquid outlet hole 121. Compared with forward spraying, it is easier for the liquid to be sprayed out smoothly and more conducive to the liquid flowing evenly to the entire area where the internal diseased part 41 is located.

[0063] In one implementation, such as Figure 7 As shown, the drill bit 11 includes a central tooth 111 and at least two side teeth 112. The central tooth 111 and the side teeth 112 are distributed along the diameter direction of the injection guide drill bit 10, and the side teeth 112 are located on both sides of the central tooth 111. The central tooth 111 and the side teeth 112 perform cutting when rotating, which improves cutting efficiency. At the same time, the structure is relatively simple and easy to manufacture. Considering that the overall outer diameter of the injection guide drill bit 10 is relatively small, it is beneficial to reduce the machining difficulty.

[0064] Furthermore, the tip of the central tooth 111 extends to the front of the side tooth 112, allowing the central tooth 111 to drill deeper than the side tooth 112. This enables the central tooth 111 to act as a guide during drilling, reducing deviation in the drilling path and ensuring that the injection guide drill bit 10 drills forward smoothly.

[0065] In one embodiment, the injection catheter drill bit 10 has a drive unit 14 at its tail end. The injection catheter drill bit 10 is detachably connected to the drive mechanism 20 via the drive unit 14. During drilling, the drive mechanism 20 drives the injection catheter drill bit 10 to rotate and propels it forward via the drive unit 14. After the injection catheter drill bit 10 has drilled into place, the drive mechanism 20 can be detached, and the tail end of the injection catheter drill bit 10 is connected to the drug injection device 30. Drug solution is then introduced into the injection catheter drill bit 10 through the liquid inlet 13.

[0066] Furthermore, such as Figure 8 As shown, the drive unit 14 includes a slot 141, and the drive mechanism 20 has a locking block (not shown) that cooperates with the slot 141. The locking block cooperates with the slot 141 to transmit torque. The infusion line of the drug injection device 30 can also be connected to the slot 141, and the infusion line delivers the drug solution into the injection guide drill bit 10 through the inlet section 13.

[0067] Preferably, the injection guide drill bit 10 is 300mm to 550mm long and is hollow. The drill head 11 is a three-pointed flat drill bit, and its width is 1.5mm-2mm along the direction of the distribution of the central tooth 111 and the side teeth 112. Preferably, there are two outlet holes 121, which are arranged radially along the injection guide drill bit 10. The diameter of the outlet hole 121 is the same as the diameter of the channel connecting the outlet part 12 and the inlet part 13 in the injection guide drill bit 10. The main body of the tube section 101 is a drill rod with a channel. The outer diameter of the drill rod is consistent and is 1.3mm-1.6mm. The inner diameter of the channel of the drill rod is 0.6mm-0.8mm, and the outer diameter of the drill rod is slightly smaller than the width of the drill head 11.

[0068] In one embodiment, the in-situ targeted liquid injection device for ancient building wooden components includes a liquid injection device 30. Figure 1 (Not shown in the image), the drug injection device 30 can be detachably connected to the inlet section 13. During drilling, the drug injection device 30 is not connected to the injection guide drill bit 10, and the drive mechanism 20 drives the injection guide drill bit 10 to drill; after drilling to the desired depth, the drive mechanism 20 is disconnected from the injection guide drill bit 10, as shown in the image. Figure 4 As shown, the drug injection device 30 is connected to the injection guide drill bit 10 and delivers the drug solution.

[0069] In one embodiment, the medicine injection device 30 includes a metering pressurization pump, a medicine storage tank, and an infusion pipeline, used to deliver the prepared medicine solution at constant pressure and metered quantity through the infusion pipeline into the injection guide drill bit 10, and then inject it into the internal diseased area 41 of the wooden component 40 through the injection guide drill bit 10. Preferably, the pressure of the medicine solution provided by the medicine injection device 30 is 0.1MPa-1.0MPa, and the flow rate is 0.01ml / min-50ml / min.

[0070] In one embodiment, the in-situ targeted liquid injection device for ancient building wooden components includes a monitoring and positioning component. The monitoring and positioning component is used to monitor the drilling resistance of the injection guide drill bit 10 into the wooden component 40 in real time, so as to automatically determine whether the injection guide drill bit 10 has reached the internal diseased part 41 of the wooden component 40, and to improve the accuracy of the determination.

[0071] In one embodiment, the in-situ targeted liquid injection device for ancient building wooden components includes a main control component, such as... Figure 9 As shown, the monitoring and positioning component, the liquid injection device 30, and the drive mechanism 20 of the injection guide drill bit 10 are all electrically connected to the main control component. The main control component is responsible for controlling the communication and coordination between the components and supplying power to each component. Based on the monitoring signal from the monitoring and positioning component, the main control component determines whether the injection guide drill bit 10 has reached the internal diseased part 41 of the wooden component 40, and sends a control signal to control whether the drive mechanism 20 continues to drive the injection guide drill bit 10 forward. Preferably, the internal diseased part 41 of the wooden component 40 is located by monitoring the change in drilling resistance through the monitoring and positioning component, and the liquid outlet 12 of the injection guide drill bit 10 is accurately positioned in the middle of the entire internal diseased part 41, which is beneficial for the liquid to be evenly dispersed and reach the internal diseased part 41. When the monitored drilling resistance decreases by a preset amount, it is determined that the injection guide drill bit 10 has reached the internal defective part 41 of the wooden component 40; when the monitored drilling resistance increases again, it is determined that the injection guide drill bit 10 has passed through the internal defective part 41 of the wooden component 40, thereby obtaining the range of the internal defective part 41.

[0072] In one embodiment, the drive mechanism 20 includes a first motor 21 and a second motor 22. The first motor 21 provides power to drive the injection guide drill bit 10 to rotate, and the second motor 22 provides power to drive the injection guide drill bit to move. The in-situ targeted liquid injection device for ancient building wooden components includes a monitoring and positioning component. The monitoring and positioning component is used to monitor the current or voltage of the first motor 21 and / or the current or voltage of the second motor 22 to indirectly monitor the drilling resistance of the injection guide drill bit 10 into the wooden component 40 in real time. The first motor 21 and the second motor 22 provide power for the drilling of the injection guide drill bit 10. When the resistance experienced by the injection guide drill bit 10 changes, the current and voltage of the first motor 21 and the second motor 22 will change accordingly. Therefore, the drilling resistance can be characterized by the current and voltage of the first motor 21 and / or the current and voltage of the second motor 22. The drilling resistance can be indirectly monitored by monitoring the current or voltage of the first motor 21 and / or the current or voltage of the second motor 22. Since the current and voltage of the first motor 21 and the second motor 22 are relatively easy to detect, the difficulty of monitoring the drilling resistance is reduced.

[0073] Preferably, the first motor 21 is a DC motor, which controls the rotational speed of the injection guide drill bit 10; the second motor 22 is a stepper motor, which controls the feed speed of the injection guide drill bit 10. Figures 1-3 As shown, the stepper motor shaft is connected to the lead screw 23, and the rotational speed of the lead screw 23 is the same as that of the stepper motor. The lead screw slider 24 moves linearly along the guide rail 25 under the drive of the lead screw 23. A DC motor is mounted on the lead screw slider 24, and the injection guide drill bit 10 is connected to the DC motor shaft. The rotational speed of the injection guide drill bit 10 is the same as that of the DC motor. When the stepper motor rotates, it drives the lead screw 23 to rotate synchronously, causing the lead screw slider 24 to move linearly on the guide rail 25, thereby driving the injection guide drill bit 10 to move. The second motor 22, the lead screw, and the guide rail 25 are mounted on the support housing 201, and the injection guide drill bit 10 can pass through the front panel of the support housing 201.

[0074] Taking advantage of the fact that the resistance feedback of the internal diseased part 41 to the injection guide drill bit 10 is lower than that of the unrotten part, the location of the internal diseased part 41 of the wooden component 40 can be determined by calculating the drilling resistance in real time, so as to control the injection guide drill bit 10 to stop at a designated position in the internal diseased part 41.

[0075] During the drilling process of the injection guide drill bit 10 into the wooden component 40, the drilling resistance is positively correlated with the density of the wooden component 40. Specifically, when the density of the wood in the drilling area of ​​the injection guide drill bit 10 increases, the drilling resistance of the injection guide drill bit 10 increases, the load torque of the DC motor increases, the speed of the DC motor decreases, thereby reducing the back electromotive force of the DC motor, increasing the armature current, and increasing the output torque of the DC motor. When the density of the wood decreases, the drilling resistance of the injection guide drill bit 10 decreases, the load torque of the DC motor decreases, the speed of the DC motor increases, thereby increasing the back electromotive force of the DC motor, decreasing the armature current, and decreasing the output torque of the DC motor. In this case, the output torque of the DC motor is positively correlated with the current, voltage, and power of the DC motor. Since the output torque of the motor is not easy to measure in real time, the relative value of the drilling resistance of the injection guide drill bit 10 can be represented by the current / voltage ratio of the DC motor. Preferably, the voltage of the DC motor is used to represent the relative value of the drilling resistance of the injection guide drill bit 10. This device uses the real-time voltage change of the DC motor to obtain the change in the magnitude of the drilling resistance of the injection guide drill bit 10.

[0076] When in use, press the front end of the injection guide drill bit 10 against the surface of the part of the wooden component 40 to be protected. After opening, the injection guide drill bit 10 enters the wooden component 40. When the injection guide drill bit 10 reaches the internal diseased part 41, the injection guide drill bit 10 automatically stops at the designated position. Connect the tail end of the injection guide drill bit 10 to the liquid injection device 30 through the infusion pipeline, and input the prepared liquid according to the process requirements into the interior of the wooden component 40.

[0077] Preferably, the rotational speed of the injection guide drill bit 10 is set to 3500 r / min, the feed speed of the injection guide drill bit 10 is set to 15 cm / min-60 cm / min, the drilling resistance sampling interval of the injection guide drill bit 10 is 0.0025 mm-0.01 mm, and the maximum drilling length is 550 mm.

[0078] The in-situ targeted injection device for ancient building wooden components provided by the present invention is suitable for cultural relic protection projects. It can perform in-situ targeted injection, and the injection device 30 can use pressure to directly inject the medicine into the diseased part 41 inside the wooden component 40 to treat it, prevent the development of pests and diseases, improve the pest and disease control effect, and cause less damage to the wooden component 40.

[0079] The above descriptions are merely a few embodiments of the present invention. Those skilled in the art can make various modifications or variations to the embodiments of the present invention based on the content disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. A method for in-situ targeted liquid injection of ancient building wooden components, characterized in that, include: The hollow injection guide drill bit is drilled into the wooden components of the ancient building, and the drilling resistance is indirectly monitored by monitoring the current or voltage of the first motor used to provide power to drive the injection guide drill bit to rotate, and / or by monitoring the current or voltage of the second motor used to provide power to drive the injection guide drill bit to move. When the monitored drilling resistance decreases by a preset amount, it is determined that the injection guide drill bit has reached the internal defect of the wooden component, causing the injection guide drill bit to stop and partially located at the internal defect. The medicine is injected into the internal diseased area through the injection guide drill bit; The injection conduit drill bit has a drill head and a liquid outlet at its tip. The outer diameter of the drill head is larger than the outer diameter of the tube body of the injection conduit drill bit. The liquid outlet includes a plurality of circumferentially distributed liquid outlet holes disposed on the side wall of the tube body. The preset amplitude is when the monitored drilling resistance is reduced to less than 30% of the average drilling resistance.

2. A device for in-situ targeted liquid injection of ancient building wooden components, characterized in that, The in-situ targeted liquid injection method for ancient building wooden components as described in claim 1 includes: a hollow injection conduit drill bit and a drive mechanism, wherein the drive mechanism is connected to the injection conduit drill bit to drive the injection conduit drill bit to drill into the ancient building wooden component; The injection conduit drill bit has a drill head and a liquid outlet at its head end, and a liquid inlet at its tail end. The injection conduit drill bit has a channel connecting the liquid outlet and the liquid inlet, and the liquid inlet can be detachably connected to the drug injection device. The tail end of the injection conduit drill bit has a drive section, and the injection conduit drill bit is detachably connected to the drive mechanism through the drive section; The injection conduit drill bit includes a tube body, a drill head connected to the front end of the tube body, a liquid outlet portion disposed on the tube body, and the outer diameter of the drill head being larger than the outer diameter of the tube body; the liquid outlet portion includes a plurality of circumferentially distributed liquid outlet holes disposed on the side wall of the tube body. The drive mechanism includes a first motor and a second motor. The first motor is used to provide power to drive the injection guide drill bit to rotate, and the second motor is used to provide power to drive the injection guide drill bit to move forward. The in-situ targeted liquid injection device for ancient building wooden components includes a monitoring and positioning component. The monitoring and positioning component is used to monitor the current or voltage of the first motor and / or the current or voltage of the second motor, so as to indirectly monitor the drilling resistance of the injection guide drill bit into the ancient building wooden component in real time. When the monitored drilling resistance decreases by a preset amount, it is determined that the injection guide drill bit has reached the internal defect of the wooden component, causing the injection guide drill bit to stop and partially located at the internal defect; the preset amount is when the monitored drilling resistance decreases to less than 30% of the average drilling resistance.

3. The in-situ targeted liquid injection device for ancient architectural wooden components according to claim 2, characterized in that, The drill bit includes a central tooth and at least two side teeth, the central tooth and the side teeth being distributed along the diameter direction of the injection guide drill bit, and the side teeth being located on both sides of the central tooth; The tip of the center tooth extends forward of the side teeth. The tip of the center tooth extends forward of the side teeth.

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