Mechanical vibration measuring device and measuring method for forestry machinery
By designing mechanical vibration measurement equipment for vibration sensors and controllers in forestry machines, the problem of difficult detection of mechanical vibration during use of forestry machines is solved, and safe and reliable chain saw operation is achieved.
Patent Information
- Application Number
- CN202411287335.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2044-09-13
AI Technical Summary
The mechanical vibrations generated by forestry machines during use are difficult to detect in time, resulting in safety hazards, especially hand-held operating machinery such as chainsaws, brush cutting machines, etc., especially when the chain rings come into contact with trees and cut, resulting in excessive vibration of the guide plate or damage to the chain ring.
A mechanical vibration measurement device is designed, including a vibration sensor and a controller, to detect vibration of the guide plate and forcefully stop power supply of the chainsaw body when it exceeds the safe range, and adjust the position of the vibration sensor under different cutting conditions to monitor vibration of the guide plate in real time.
The safe use of forestry machines is achieved, and the safety risks and equipment damage caused by excessive vibration of the guide are avoided by real-time detection and adjustment of the vibration sensor position.
Smart Images
Figure CN118936623B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of forestry machines, and in particular to a mechanical vibration measuring device and a measuring method for a forestry machine. Background Art
[0002] In the process of forestry work, various forestry machines are used. Among them, some forestry machines will generate mechanical vibrations during use. The mechanical vibrations of the machines will cause certain dangers, especially some handheld machines, such as electric saws, brush cutters, lawn mowers, pole-type power pruning saws, and other portable handheld machines. During use, the mechanical vibrations generated by these handheld machines will affect people's use.
[0003] When using an electric saw, the chain link of the electric saw contacts and cuts the tree, causing the guide plate on which the chain link is installed to vibrate. When a part of the chain link contacts and cuts the tree, due to a certain deviation between the position where people hold the saw and the cutting position, the guide plate of the chain link will experience large mechanical vibrations, which people cannot observe. As a result, the chain link will be stuck in the tree or damaged and fall off. When most of the chain link contacts and cuts the tree, a large part of the chain link and the guide plate will be embedded in the tree. Although the mechanical vibration is small at this time, there is still a certain risk. Summary of the Invention
[0004] The object of the present invention is to provide a mechanical vibration measuring device and a measuring method for a forestry machine, so as to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a mechanical vibration measuring device for forestry machines, comprising a chainsaw body, a guide plate fixedly mounted on the end of the chainsaw body, a chain ring mounted on the outside of the guide plate, a protective shell fixedly mounted on one side of the chainsaw body corresponding to the end of the guide plate, a movable frame slidably mounted inside the protective shell, a vibration sensor mounted on the end of the movable frame, lifting plates mounted on both sides of the movable frame, an extrusion block fixedly mounted on the end of the lifting plate in an integrated manner, the extrusion block can be raised and lowered and extrudes the guide plate, and a controller is mounted on the outside of the movable frame.
[0006] As a further preferred embodiment of the present technical solution, a first sliding hole is provided at the end of the movable frame, a first sliding rod is slidingly installed inside the first sliding hole, a mounting block is fixedly installed at the bottom of the first sliding rod, the vibration sensor is fixedly installed at the bottom of the mounting block, and an extrusion spring is sleeved on the outer side of the top end of the first sliding rod, one end of the extrusion spring is fixedly connected to the movable frame, and the other end of the extrusion spring is fixedly connected to the end of the mounting block away from the vibration sensor.
[0007] As a further preferred embodiment of the present technical solution, an adjusting motor is fixedly installed on the inner wall of one end of the protective shell, a screw is fixedly installed on the output end of the adjusting motor, the screw is threadedly connected to the end of the movable frame, and sliding grooves are symmetrically provided on both sides of the movable frame. A slider is fixedly installed on the inner wall of the protective shell at a position corresponding to the sliding groove, and the slider is slidably connected to the sliding groove.
[0008] As a further preferred embodiment of the present technical solution, fixed blocks are symmetrically fixedly installed on both sides of the movable frame, and a second sliding hole is symmetrically opened in the middle of the fixed block, and a second sliding rod is fixedly installed at a position corresponding to the second sliding hole at one end of the lifting plate, and the second sliding rod is slidably connected to the second sliding hole, and a return spring is sleeved on the outer side of one end of the second sliding rod close to the second sliding hole, one end of the return spring is fixedly connected to the lifting plate, and the other end of the return spring is fixedly connected to the fixed block, and an extrusion fillet is opened at the end of the second sliding rod away from the lifting plate, and a triangular limit block is fixedly installed on the inner wall of the protective shell corresponding to the moving track of the second slide rod, and the triangular limit block is in extrusion contact with the second slide rod.
[0009] As a further preferred embodiment of the present technical solution, a rubber pad is fixedly installed on the bottom end of the extrusion block.
[0010] As a further preferred embodiment of the present technical solution, a buzzer is fixedly installed on the outer side of the protective shell near the controller.
[0011] As a further preferred embodiment of the present technical solution, a method for measuring mechanical vibration of a forestry machine comprises the following steps:
[0012] S1. When the electric saw body is in use, the chain link will operate to cut an object. When a larger portion of the chain link is used for cutting, the vibration sensor will contact the surface of the guide plate to detect the vibration generated by the guide plate. When it is detected that the vibration of the guide plate exceeds a safe range, the controller controls the power supply of the electric saw body to forcibly stop the use of the electric saw body.
[0013] S2. When using a smaller part of the chain link for cutting, the controller is used to control the operation of the regulating motor, which will drive the screw to rotate. The threaded connection between the screw and the movable frame and the sliding limit of the slider and the slide groove will drive the movable frame to move out of the protective shell, move the vibration sensor to the middle position of the guide plate, and then operate the electric saw body to operate. The vibration sensor is used to detect the vibration generated by the guide plate. When it is detected that the vibration of the guide plate exceeds the specified range, the movement of the movable frame is controlled again to drive the extrusion of the rounded corner and the triangular limit block, which will drive the second slide bar to slide inside the second slide hole, and then drive the lifting plate to move close to the guide plate. At this time, the extrusion block will squeeze the guide plate to control the vibration frequency of the guide plate, so that the continuous use of the electric saw body can be achieved. Subsequently, when it is detected that the vibration of the guide plate exceeds the safe range, the power supply of the electric saw body is controlled by the controller to forcibly stop the use of the electric saw body.
[0014] The present invention provides a mechanical vibration measuring device and a measuring method for forestry machinery, which have the following beneficial effects:
[0015] (1) The present invention can detect the vibration generated by the guide plate by contacting the surface of the guide plate through the vibration sensor. When it is detected that the vibration of the guide plate exceeds the safe range, the power supply of the electric saw body is controlled by the controller to forcibly stop the electric saw body, thereby ensuring people's safe use.
[0016] (2) When the present invention uses a larger part of the chain link for cutting, the vibration sensor will contact the surface of the guide plate to detect the vibration generated by the guide plate. When the present invention uses a smaller part of the chain link for cutting, the controller controls the vibration sensor to move to the middle position of the guide plate, and the vibration generated by the guide plate is detected by the vibration sensor. The mechanical vibration generated by the guide plate under different usage conditions can be measured, and the present invention is suitable for different usage conditions of the electric saw body. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is one of the overall structural diagrams of the present invention;
[0018] Figure 2 This is the second schematic diagram of the overall structure of the present invention;
[0019] Figure 3 It is a schematic diagram of the local structure of the present invention;
[0020] Figure 4 It is a schematic diagram of the partial explosion structure of the present invention;
[0021] Figure 5 for Figure 4 Enlarged view of point A in the middle;
[0022] In the figure: 1. Electric saw body; 2. Guide plate; 3. Chain link; 4. Protective shell; 5. Moving frame; 6. Vibration sensor; 7. Lifting plate; 8. Extrusion block; 9. Controller; 10. First sliding hole; 11. First sliding rod; 12. Mounting block; 13. Extrusion spring; 14. Adjustment motor; 15. Screw; 16. Slide groove; 17. Slider; 18. Fixed block; 19. Second sliding hole; 20. Second sliding rod; 21. Return spring; 22. Extrusion fillet; 23. Triangular limit block; 24. Rubber pad; 25. Buzzer. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.
[0024] The present invention provides a technical solution: Figures 1 to 5 As shown, in this embodiment, a mechanical vibration measuring device for a forestry machine includes a chainsaw body 1, a guide plate 2 is fixedly mounted on the end of the chainsaw body 1, a chain ring 3 is mounted on the outside of the guide plate 2, a protective shell 4 is fixedly mounted on one side of the chainsaw body 1 at a position corresponding to the end of the guide plate 2, a movable frame 5 is slidably mounted inside the protective shell 4, a vibration sensor 6 is mounted on the end of the movable frame 5, and the vibration sensor 6 is arranged in contact with the surface of the guide plate 2, lifting plates 7 are mounted on both sides of the movable frame 5, and an extrusion block 8 is fixedly mounted on the end of the lifting plate 7 in an integral manner, and the extrusion block 8 can be lifted and lowered and squeeze the guide plate 2, and a controller 9 is mounted on the outside of the movable frame 5. The controller 9 is a control component equipped with a display screen, which can control the stopping of the chainsaw body 1 and the movement and reset operation of the movable frame 5. When the chainsaw body 1 is in use, the vibration generated by the guide plate 2 is detected by the vibration sensor 6. When it is detected that the vibration of the guide plate 2 exceeds the safety range, the power supply of the chainsaw body 1 is controlled by the controller 9 to forcibly stop the use of the chainsaw body 1.
[0025] like Figures 1 to 5 As shown, a first sliding hole 10 is opened at the end of the movable frame 5, and a first sliding rod 11 is slidably installed inside the first sliding hole 10. A mounting block 12 is fixedly installed at the bottom of the first sliding rod 11, and the vibration sensor 6 is fixedly installed at the bottom of the mounting block 12. An extrusion spring 13 is sleeved on the outer side of the top end of the first sliding rod 11, one end of the extrusion spring 13 is fixedly connected to the movable frame 5, and the other end of the extrusion spring 13 is fixedly connected to the end of the mounting block 12 away from the vibration sensor 6.
[0026] The extrusion spring 13 pushes the first slide bar 11 to drive the vibration sensor 6 installed at the bottom of the first slide bar 11 to constantly contact the surface of the guide plate 2 for real-time measurement of the mechanical vibration of the guide plate 2 .
[0027] like Figures 1 to 5As shown, an adjusting motor 14 is fixedly mounted on the inner wall at one end of the protective shell 4, and a screw 15 is fixedly mounted on the output end of the adjusting motor 14, which is threadedly connected to the end of the movable frame 5, and slide grooves 16 are symmetrically provided on both sides of the movable frame 5. A slider 17 is fixedly mounted on the inner wall of the protective shell 4 at the position corresponding to the slide groove 16, and the slider 17 is slidably connected to the slide groove 16.
[0028] The operation of the adjusting motor 14 is controlled by the controller 9, and the adjusting motor 14 will drive the screw 15 to rotate. The threaded connection between the screw 15 and the movable frame 5 and the sliding restriction of the slider 17 and the slide groove 16 will drive the movable frame 5 to move out of the protective shell 4. The relative position of the movable vibration sensor 6 and the guide plate 2 can be measured in real time for the mechanical vibration of different positions of the guide plate 2.
[0029] like Figures 1 to 5 As shown, fixed blocks 18 are symmetrically fixedly installed on both sides of the mobile frame 5, and a second sliding hole 19 is symmetrically opened in the middle of the fixed block 18. A second sliding rod 20 is fixedly installed at the position corresponding to the second sliding hole 19 at one end of the lifting plate 7. The second sliding rod 20 is slidably connected to the second sliding hole 19. A return spring 21 is sleeved on the outer side of the end of the second sliding rod 20 close to the second sliding hole 19. One end of the return spring 21 is fixedly connected to the lifting plate 7, and the other end of the return spring 21 is fixedly connected to the fixed block 18. An extrusion fillet 22 is opened at the end of the second sliding rod 20 away from the lifting plate 7. A triangular limit block 23 is fixedly installed on the inner wall of the protective shell 4 corresponding to the moving trajectory of the second sliding rod 20, and the triangular limit block 23 is in extrusion contact with the second sliding rod 20.
[0030] After the vibration sensor 6 is moved to the middle position of the guide plate 2 by adjusting the operation of the motor 14, the vibration generated by the guide plate 2 is detected by the vibration sensor 6 during the operation of the electric saw body 1. When it is detected that the vibration of the guide plate 2 exceeds the specified range, the movement of the movable frame 5 is controlled again to drive the extrusion fillet 22 to extrude the triangular limit block 23, and then drive the second slide bar 20 to slide inside the second slide hole 19, and then drive the lifting plate 7 to move close to the guide plate 2. At this time, the extrusion block 8 will squeeze the guide plate 2 to control the vibration frequency of the guide plate 2, so that the continuous use of the electric saw body 1 can be achieved.
[0031] like Figures 1 to 5 As shown, a rubber pad 24 is fixedly mounted on the bottom end of the extrusion block 8 .
[0032] When the extrusion block 8 moves close to the extrusion guide plate 2, the installed rubber pad 24 can reduce the friction generated when the extrusion block 8 contacts the guide plate 2, thereby protecting the guide plate 2 and reducing the noise generated when the extrusion block 8 contacts the guide plate 2.
[0033] like Figures 1 to 5As shown, a buzzer 25 is fixedly installed on the outer side of the protective shell 4 near the controller 9.
[0034] When the vibration sensor 6 detects that the vibration of the guide plate 2 is about to exceed the safety range, the controller 9 can control the buzzer 25 to sound to remind people, and people can automatically turn off the electric saw body 1 to ensure people's safety.
[0035] like Figures 1 to 5 As shown, a measurement method of a mechanical vibration measuring device for a forestry machine comprises the following steps:
[0036] S1. When the electric saw body 1 is in use, the chain link 3 operates to cut an object. When a larger portion of the chain link 3 is used for cutting, the vibration sensor 6 contacts the surface of the guide plate 2 to detect the vibration generated by the guide plate 2. When it is detected that the vibration of the guide plate 2 exceeds a safe range, the controller 9 controls the power supply to the electric saw body 1 to forcibly stop the use of the electric saw body 1.
[0037] S2. When a smaller portion of the chain link 3 is used for cutting, the controller 9 controls the adjustment motor 14 to operate. The adjustment motor 14 drives the screw 15 to rotate. The screw 15 is threadedly connected to the movable frame 5 and the sliding limit of the slider 17 and the slide groove 16 drives the movable frame 5 to move out of the protective shell 4, and the vibration sensor 6 is moved to the middle position of the guide plate 2. Then, the electric saw body 1 is operated to detect the vibration generated by the guide plate 2 through the vibration sensor 6. When it is detected that the vibration of the guide plate 2 exceeds the specified range, the movable frame 5 is controlled to move again, which will drive the squeezing fillet 22 to squeeze the triangular limit block 23, and then drive the second slide bar 20 to slide inside the second slide hole 19, and then drive the lifting plate 7 to move close to the guide plate 2. At this time, the squeezing block 8 squeezes the guide plate 2 to control the vibration frequency of the guide plate 2, so that the electric saw body 1 can be used continuously. Subsequently, when it is detected that the vibration of the guide plate 2 exceeds the safe range, the controller 9 controls the power supply of the electric saw body 1 to forcibly stop the use of the electric saw body 1.
[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A mechanical vibration measuring device for a forestry machine, comprising a chainsaw body (1), a guide plate (2) fixedly mounted at the end of the chainsaw body (1), a chain ring (3) mounted on the outer side of the guide plate (2), and characterized in that: A protective shell (4) is fixedly installed on one side of the electric saw body (1) at a position corresponding to the end of the guide plate (2); a movable frame (5) is slidably installed inside the protective shell (4); a vibration sensor (6) is installed at the end of the movable frame (5); a lifting plate (7) is installed on both sides of the movable frame (5); an extrusion block (8) is fixedly installed at the end of the lifting plate (7); the extrusion block (8) can be lifted and lowered and extrudes the guide plate (2); and a controller (9) is installed on the outside of the movable frame (5).
2. A mechanical vibration measuring device for forestry machinery according to claim 1, characterized in that: A first sliding hole (10) is provided at the end of the movable frame (5), a first sliding rod (11) is slidably installed inside the first sliding hole (10), a mounting block (12) is fixedly installed at the bottom of the first sliding rod (11), and the vibration sensor (6) is fixedly installed at the bottom of the mounting block (12), an extrusion spring (13) is sleeved on the outer side of the top end of the first sliding rod (11), one end of the extrusion spring (13) is fixedly connected to the movable frame (5), and the other end of the extrusion spring (13) is fixedly connected to an end of the mounting block (12) away from the vibration sensor (6).
3. The mechanical vibration measuring device for forestry machinery according to claim 2, characterized in that: An adjusting motor (14) is fixedly mounted on the inner wall of one end of the protective shell (4), a screw (15) is fixedly mounted on the output end of the adjusting motor (14), the screw (15) is threadedly connected to the end of the movable frame (5), and sliding grooves (16) are symmetrically provided on both sides of the movable frame (5), and a slider (17) is fixedly mounted on the inner wall of the protective shell (4) at a position corresponding to the sliding groove (16), and the slider (17) is slidably connected to the sliding groove (16).
4. The mechanical vibration measuring device for forestry machinery according to claim 3, characterized in that: The two sides of the movable frame (5) are symmetrically fixed with fixed blocks (18), and a second sliding hole (19) is symmetrically opened in the middle of the fixed block (18). A second sliding rod (20) is fixedly installed at the position of the second sliding hole (19) at one end of the lifting plate (7), and the second sliding rod (20) is slidably connected to the second sliding hole (19). A return spring (21) is sleeved on the outer side of one end of the second sliding rod (20) close to the second sliding hole (19), one end of the return spring (21) is fixedly connected to the lifting plate (7), and the other end of the return spring (21) is fixedly connected to the fixed block (18). An extrusion fillet (22) is opened at one end of the second sliding rod (20) away from the lifting plate (7), and a triangular limit block (23) is fixedly installed on the inner wall of the protective shell (4) corresponding to the moving track of the second sliding rod (20), and the triangular limit block (23) is in extrusion contact with the second sliding rod (20).
5. The mechanical vibration measuring device for forestry machinery according to claim 4, characterized in that: A rubber pad (24) is fixedly mounted on the bottom end of the extrusion block (8).
6. The mechanical vibration measuring device for forestry machinery according to claim 5, characterized in that: A buzzer (25) is fixedly mounted on the outer side of the protective shell (4) near the controller (9).
7. A measurement method using a mechanical vibration measuring device for a forestry machine according to any one of claims 4 to 6, characterized in that: The following steps are involved: S1. When the electric saw body (1) is in use, the chain link (3) operates to cut an object. When a larger portion of the chain link (3) is used for cutting, the vibration sensor (6) contacts the surface of the guide plate (2) to detect the vibration generated by the guide plate (2). When it is detected that the vibration of the guide plate (2) exceeds a safe range, the controller (9) controls the power supply of the electric saw body (1) to forcibly stop the use of the electric saw body (1); S2. When a smaller part of the chain link (3) is used for cutting, the controller (9) controls the regulating motor (14) to operate, and the regulating motor (14) drives the screw (15) to rotate. The screw (15) is threadedly connected to the movable frame (5) and the sliding limit of the slider (17) and the slide groove (16) will drive the movable frame (5) to move out of the protective shell (4), and the vibration sensor (6) is moved to the middle position of the guide plate (2). Then, the electric saw body (1) is operated, and the vibration generated by the guide plate (2) is detected by the vibration sensor (6). When the vibration of the guide plate (2) exceeds the specified value, the vibration sensor (6) is turned on. When the range is determined, the moving frame (5) is controlled to move again, which drives the extrusion fillet (22) to extrude the triangular limit block (23), and then drives the second slide bar (20) to slide inside the second slide hole (19), and then drives the lifting plate (7) to move close to the guide plate (2). At this time, the extrusion block (8) will squeeze the guide plate (2) to control the vibration frequency of the guide plate (2), so as to achieve continuous use of the electric saw body (1). Subsequently, when it is detected that the vibration of the guide plate (2) exceeds the safe range, the power supply of the electric saw body (1) is controlled by the controller (9) to forcibly stop the use of the electric saw body (1).
Citation Information
Patent Citations
Automatic tool machining detection equipment
CN116429604A
Chain saw with vibrations detection mechanism transfinites
CN205238196U