Grafted seedling detection device

Abstract

The present invention discloses a detection device for grafted seedlings, and specifically relates to the technical field of grafted seedling detection, comprising a handheld part, the handheld part comprising a main body, one end of the main body is provided with a pulling mechanism, and the other end of the pulling mechanism away from the main body is provided with a clamping mechanism. The present invention sets a displacement detection mechanism, when the pulling force reaches the threshold value of the first elastic member, the conductive column loses contact with the conductive contact piece, and the controller controls the motor to stop rotating after detecting that the conductive column loses contact with the conductive contact piece, at this time, the displacement sensor detects the displacement of the pulling hook, and transmits the displacement data to the display mechanism, so that the grafting quality of the grafted seedling can be quickly judged according to the displacement after the conductive column loses contact with the conductive contact piece, and the compression degree of the first elastic member can be adjusted by rotating two adjusting nuts, and the pressure threshold of the pulling trigger can be adjusted, so that the grafted seedlings in different situations can be detected, and the applicability of the device can be further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of grafted seedling detection, and more specifically, to a detection device for grafted seedlings. Background Art

[0002] Grafting is a form of vegetative reproduction, which is to graft the branches or buds of one plant onto the stems or roots of another plant, so that the cambium of the two plants are close together, which can ensure that water and inorganic salts are transported upward from the roots, and that organic nutrients produced by photosynthesis are transported downward to the roots, so that the grafted plants can survive. In order to verify whether the grafting is effective, the grafted seedlings are usually tested about a week after grafting, mainly by pulling the grafted seedlings by hand and observing whether the grafted seedlings are firm.

[0003] The Chinese patent application number CN201710274184.4 discloses a grafted seedling detection device, which belongs to the field of agricultural machinery and is composed of an industrial camera, a clamping device, a bending claw, a rotating device and a chassis. The bottom of the chassis is welded with four feet at the four corners, and the top of the chassis is provided with two transverse grooves. The bending claw is slidably connected in the transverse grooves on the top of the chassis. The bottom of the chassis is provided with a rotating device. The clamping device is located between the industrial camera and the chassis, and the bending claw is directly above it. The bending claw pulls the grafted seedling, and the industrial camera takes a picture of the combination degree of the rootstock and the scion for the first detection, and then the rotating device rotates ninety degrees for the second detection. The claw of the grafted seedling detection device has three degrees of freedom of movement, and the adjustment is flexible and convenient. It can pull the grafted seedlings with large shape changes, and perform two tests on a grafted seedling, with high accuracy and improved performance.

[0004] However, the structure of the above invention is too bulky and complicated, and it is difficult to install and debug, and it is difficult to use and carry, which seriously affects the detection efficiency. In addition, when performing pulling detection on grafted seedlings, the invention cannot control the pulling force, which affects the detection accuracy and is likely to cause damage to the grafted seedlings, reducing the survival rate of the grafted seedlings.

[0005] The present invention provides a detection device for grafted seedlings, aiming to solve the problem that when performing pulling detection on grafted seedlings, the pulling force cannot be controlled, which affects the detection accuracy and easily causes damage to the grafted seedlings, thereby reducing the survival rate of the grafted seedlings. Summary of the invention

[0006] The purpose of the present invention is to provide a detection device for grafted seedlings to solve the problem raised in the above background technology that when pulling the grafted seedlings, the pulling force cannot be controlled, which affects the detection accuracy and is easy to cause damage to the grafted seedlings, thereby reducing the survival rate of the grafted seedlings.

[0007] To achieve the above object, the present invention provides the following technical solutions: a grafted seedling detection device, comprising a handheld portion, the handheld portion comprising a main body, one end of the main body is provided with a pulling mechanism, the pulling mechanism is provided with a displacement detection mechanism, and the other end of the pulling mechanism away from the main body is provided with a clamping mechanism;

[0008] The pulling mechanism includes a mounting box fixedly connected to one end of the main body, a driving chamber and a driven chamber are provided inside the mounting box, a first slide groove is provided on one side of the mounting box close to the clamping mechanism, a first threaded rod is slidably connected inside the first slide groove, and a pulling hook is provided at one end of the first threaded rod close to the clamping mechanism for pulling the scion of the grafted seedling during the detection process;

[0009] The displacement detection mechanism includes a mounting block fixedly connected to the pulling hook on one side close to the first threaded rod, a telescopic groove is provided on the mounting block on the side close to the first threaded rod, the first threaded rod is slidably connected in the telescopic groove, a conductive column is provided at one end of the first threaded rod located in the telescopic groove, a conductive contact is provided inside the telescopic groove, the conductive column corresponds to the position of the conductive contact, and a displacement sensor for detecting the displacement data of the pulling hook is provided at the bottom of the mounting block, which is used to control the pulling force of the pulling mechanism by detecting the contact between the conductive column and the conductive contact, and detect the grafted seedlings through the displacement of the pulling mechanism.

[0010] Preferably, the telescopic slot has two symmetrically arranged extrusion slots, the outer wall of one end of the first threaded rod located inside the telescopic slot is provided with limit slots which are the same in number and corresponding in position as the extrusion slots, the two extrusion slots are slidably connected with limit pins which can be inserted into the corresponding limit slots, the ends of the two limit pins which are away from each other are threadedly connected with adjusting nuts, a first elastic member is connected between the ends of the two limit pins which are away from each other and the corresponding adjusting nuts, and a second elastic member is connected between one end of the first threaded rod located in the telescopic slot and the telescopic slot.

[0011] Preferably, the first slide groove is communicated with the interior of the driven chamber, the interior of the driven chamber is rotatably connected with a driven bevel gear, and the inner side of the driven bevel gear is provided with a threaded structure that can cooperate with the first threaded rod. When the driven bevel gear rotates, it can drive the first threaded rod to slide under the limiting action of the first slide groove, and pull the scion of the grafted seedling through the pulling hook.

[0012] Preferably, the clamping mechanism includes a fixed chuck and a movable chuck, a second threaded rod is fixedly connected to a side of the movable chuck close to the fixed chuck, a second sliding groove corresponding to the position of the second threaded rod is provided on the fixed chuck, the second threaded rod is slidably connected in the second sliding groove, and a clamping groove for clamping the grafted seedling stock is provided on the side where the fixed chuck and the movable chuck are close to each other.

[0013] Preferably, a motor is installed inside the main body, and the output end of the motor is fixedly connected to a first rotating rod rotatably connected to the driving chamber, the first rotating rod is fixedly connected to a driving bevel gear, a second rotating rod is rotatably connected between the driving chamber and the driven chamber, and both ends of the second rotating rod are fixedly connected to transition bevel gears respectively meshing with the driving bevel gear and the driven bevel gear.

[0014] Preferably, a rotation groove is provided on one side of the fixing chuck close to the main body, a rotating ring is fixedly connected to one end of the main body close to the fixing chuck, the rotating ring is rotatably connected in the rotation groove, a limiting hole connected to the rotation groove is provided on the outer wall of the fixing chuck, and a limiting bolt for limiting the rotation of the rotating ring is threadedly connected in the limiting hole.

[0015] Preferably, a driving groove and a connecting groove are provided inside the fixed chuck, the driving groove is connected with the driving groove, one end of the first rotating rod extending into the driving groove is fixedly connected with a friction disk, the driving groove is internally rotatably connected with a rotating disk sleeved on the outer wall of the first rotating rod, a driving gear sleeved on the outer wall of the first rotating rod is provided between the friction disk and the rotating disk, a third elastic member sleeved on the first rotating rod is connected between the driving gear and the rotating disk, and the driving gear can contact the friction disk under the thrust of the third elastic member.

[0016] Preferably, the internal rotation of the connecting groove is connected to a driven gear meshing with the driving gear, and the interior of the driven gear is provided with a threaded structure that can cooperate with the second threaded rod. When the driven gear rotates, it can drive the second threaded rod to slide under the limiting action of the second slide groove, and drive the movable chuck to clamp or loosen the rootstock of the grafted seedling.

[0017] Preferably, a controller is disposed inside the main body, and the controller can detect the contact between the conductive column and the conductive contact piece, and control the motor to stop rotating when the conductive column loses contact with the conductive contact piece.

[0018] Preferably, a handle for adjusting the length is threadedly connected to one end of the main body away from the pulling mechanism, and a display mechanism for displaying detection data of the displacement sensor is provided on the main body.

[0019] Technical effects and advantages of the present invention:

[0020] 1. The present invention uses a pulling mechanism and a clamping mechanism. On the one hand, the motor can simultaneously drive the pulling mechanism and the clamping mechanism during the rotation process to complete the pulling and clamping of the scion and the stock of the grafted seedling, so that there is no need to add an additional driving device, saving more installation space, making the device lighter, more convenient to use and carry, thereby improving the detection efficiency of the grafted seedlings; on the other hand, after the grafted seedlings are completely clamped, the first rotating rod cannot drive the driven gear and the driving gear to continue rotating, which can avoid excessive clamping force causing damage to the grafted seedlings, and can also reduce the difficulty of installation and debugging, and improve the reliability of the device;

[0021] 2. The present invention arranges structures such as a rotating ring and a limit bolt so that the angle between the pulling mechanism and the clamping mechanism can be freely adjusted, thereby being able to adapt to the detection of various grafting methods, improving the versatility of the device, and reducing false detections caused by improper angles, thereby improving the reliability of device detection, and further improving detection accuracy and efficiency.

[0022] 3. The present invention sets a displacement detection mechanism. When the grafted seedlings are detected, when the pulling force reaches the threshold of the first elastic member, the first threaded rod will stretch the second elastic member to slide in the telescopic groove, so that the conductive column loses contact with the conductive contact piece. After the controller detects that the conductive column loses contact with the conductive contact piece, it controls the motor to stop rotating, thereby avoiding damage to the grafted seedlings. The displacement sensor detects the displacement of the pulling hook and transmits the displacement data to the display mechanism, so that the grafting quality of the grafted seedlings can be quickly judged according to the displacement after the conductive column loses contact with the conductive contact piece, and the compression degree of the first elastic member can be adjusted by rotating the two adjusting nuts, thereby adjusting the pressure threshold triggered by the pulling, so that grafted seedlings in different situations can be detected, further improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a cross-sectional view of the internal structure of the installation box of the present invention.

[0025] Figure 3 This is a cross-sectional view of the internal structure of the fixing chuck of the present invention.

[0026] Figure 4 This is a cross-sectional view of the internal structure of the mounting block of the present invention.

[0027] Figure 5 It is a schematic diagram of the structure of the first fixed clamp of the present invention.

[0028] Figure 6 It is a schematic diagram of the structure of the installation box and the main body of the present invention.

[0029] Figure 7 It is a schematic diagram of the handle structure of the present invention.

[0030] Figure 8 It is a schematic diagram of the structure of the motor drive part of the present invention.

[0031] The accompanying drawings are marked as follows: 1. Hand-held portion; 11. Main body; 12. Motor; 13. First rotating rod; 14. Handle; 15. Display mechanism; 2. Pulling mechanism; 21. Mounting box; 22. Driving chamber; 23. Driven chamber; 24. Driven bevel gear; 25. First slide groove; 26. First threaded rod; 27. Pulling hook; 28. Driving bevel gear; 29. ​​Second rotating rod; 210. Transition bevel gear; 3. Displacement detection mechanism; 31. Mounting block; 32. Telescopic groove; 33. Extrusion groove; 34. Limiting groove; 35. Limiting pin; 36. Adjustment Section nut; 37, first elastic member; 38, second elastic member; 39, conductive column; 310, conductive contact piece; 311, displacement sensor; 4, clamping mechanism; 41, fixed chuck; 42, movable chuck; 43, second threaded rod; 44, second slide groove; 45, clamping groove; 46, rotating groove; 47, rotating collar; 48, limiting hole; 49, limiting bolt; 410, driving groove; 411, connecting groove; 412, friction plate; 413, rotating plate; 414, driving gear; 415, third elastic member; 416, driven gear. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1

[0034] The structure of the grafted seedling detection device in the prior art is too bulky and complicated, and it is difficult to install and debug, and it is difficult to use and carry, which seriously affects the detection efficiency.

[0035] refer to Figure 1 , Figure 6 and Figure 7A grafted seedling detection device according to an embodiment of the present invention includes a handheld portion 1, the handheld portion 1 includes a main body 11, a pulling mechanism 2 is provided at one end of the main body 11, and a clamping mechanism 4 is provided at the other end of the pulling mechanism 2 away from the main body 11.

[0036] refer to Figure 1 and Figure 2 The pulling mechanism 2 includes an installation box 21 fixedly connected to one end of the main body 11, and a driving chamber 22 and a driven chamber 23 are provided inside the installation box 21. The driven chamber 23 is rotatably connected to a driven bevel gear 24. A first slide groove 25 arranged in a through shape is provided on one side of the installation box 21. The first slide groove 25 is communicated with the interior of the driven chamber 23, and a first threaded rod 26 is slidably connected to the interior of the first slide groove 25. A threaded structure capable of cooperating with the first threaded rod 26 is provided on the inner side of the driven bevel gear 24. A pulling hook 27 is provided at one end of the first threaded rod 26 close to the clamping mechanism 4. When the driven bevel gear 24 rotates, it can drive the first threaded rod 26 to slide under the limiting action of the first slide groove 25, and pull the scion of the grafted seedling through the pulling hook 27.

[0037] refer to Figure 1 and Figure 2 , and also includes a displacement detection mechanism 3 arranged on the pulling mechanism 2, the displacement detection mechanism 3 includes a mounting block 31 fixedly connected to the pulling hook 27 on one side close to the first threaded rod 26, a displacement sensor 311 for detecting the displacement data of the pulling hook 27 is arranged at the bottom of the mounting block 31, and a display mechanism 15 for displaying the detection data of the displacement sensor 311 is arranged on the main body 11.

[0038] refer to Figure 1 , Figure 3 and Figure 5 The clamping mechanism 4 includes a fixed clamp 41 and a movable clamp 42. The movable clamp 42 is fixedly connected to a second threaded rod 43 on one side close to the fixed clamp 41. The fixed clamp 41 is provided with a second slide groove 44 corresponding to the position of the second threaded rod 43. The second threaded rod 43 is slidably connected in the second slide groove 44. A stock clamping groove 45 for clamping the grafted seedling stock is provided on the side close to each other of the fixed clamp 41 and the movable clamp 42.

[0039] refer to Figure 2 and Figure 8 A motor 12 is installed inside the main body 11, and the output end of the motor 12 is fixedly connected to a first rotating rod 13 rotatably connected to the driving chamber 22. The outer wall of the first rotating rod 13 is fixedly connected to a driving bevel gear 28 inside the driving chamber 22. A second rotating rod 29 is rotatably connected between the driving chamber 22 and the driven chamber 23. Both ends of the second rotating rod 29 are fixedly connected to transition bevel gears 210 respectively meshing with the driving bevel gear 28 and the driven bevel gear 24.

[0040] refer to Figure 2 , Figure 3 and Figure 8 The interior of the fixed chuck 41 is provided with a driving groove 410 and a connecting groove 411, the driving groove 410 is connected with the connecting groove 411, one end of the first rotating rod 13 extending into the driving groove 410 is fixedly connected with a friction disk 412, the interior of the driving groove 410 is rotatably connected with a rotating disk 413 sleeved on the outer wall of the first rotating rod 13, a driving gear 414 sleeved on the outer wall of the first rotating rod 13 is arranged between the friction disk 412 and the rotating disk 413, and a driving gear 414 sleeved on the outer wall of the first rotating rod 13 is connected between the driving gear 414 and the rotating disk 413. 3, the driving gear 414 can contact the friction disk 412 under the thrust of the third elastic member 415, the internal rotation of the connecting groove 411 is connected to a driven gear 416 meshing with the driving gear 414, and the internal part of the driven gear 416 is provided with a threaded structure that can cooperate with the second threaded rod 43. When the driven gear 416 rotates, it can drive the second threaded rod 43 to slide under the limiting action of the second slide groove 44, and drive the mobile chuck 42 to clamp or loosen the rootstock of the grafted seedling.

[0041] In actual use, the grafted seedling detection device is first moved so that the rootstock of the grafted seedling is located between the fixed clamp 41 and the movable clamp 42, and then the scion of the grafted seedling is located in the pulling hook 27, and then the motor 12 is started; Figure 3 The rotation of the motor 12 will drive the first rotating rod 13 and the friction disk 412 to rotate. At this time, the driving gear 414 contacts the friction disk 412 under the thrust of the third elastic member 415. When the friction disk 412 rotates, it will drive the driving gear 414 to rotate. When the driving gear 414 rotates, it will drive the driven gear 416 to rotate. Therefore, the second threaded rod 43 is driven to slide under the limiting action of the second slide groove 44 through the threaded structure inside the driven gear 416, and the movable chuck 42 is driven to move toward the fixed chuck 41, so as to clamp the rootstock of the grafted seedling.

[0042] After being fully clamped, the movable clamp 42 and the second threaded rod 43 cannot move, so that the driven gear 416 and the driving gear 414 cannot continue to rotate. At this time, the first rotating rod 13 continues to drive the friction disk 412 to rotate, which will cause the driving gear 414 to compress the third elastic member 415, thereby not affecting the continuous rotation of the first rotating rod 13, and at the same time, it can also avoid excessive clamping force causing damage to the grafted seedlings.

[0043] While the first rotating rod 13 rotates to drive the clamping mechanism 4 to clamp and fix the grafted seedling rootstock, Figure 2The rotation of the first rotating rod 13 will drive the driving bevel gear 28 to rotate. When the driving bevel gear 28 rotates, it can drive the driven bevel gear 24 to rotate through the second rotating rod 29 and the two transition bevel gears 210. During the rotation of the driven bevel gear 24, the internal threaded structure will drive the first threaded rod 26 to slide under the limiting action of the first slide groove 25, and pull the scion of the grafted seedling through the pulling hook 27.

[0044] When the pulling hook 27 pulls the grafted seedling scion to move, the displacement sensor 311 can detect the displacement data of the pulling hook 27, and transmit the detected displacement data to the display mechanism 15 for display, so as to judge whether the grafting of the grafted seedling is successful and the grafting quality of the grafted seedling.

[0045] It should be noted that when the motor 12 drives the clamping mechanism 4 and the pulling mechanism 2 to clamp and pull the grafted seedlings, the transmission ratio between the driving gear 414 and the driven gear 416 and the transmission ratio between the driving bevel gear 28 and the driven bevel gear 24 can be adjusted so that the clamping mechanism 4 clamps the grafted seedlings first and the pulling mechanism 2 slowly pulls the grafted seedlings, thereby avoiding damage to the grafted seedlings caused by pulling too fast.

[0046] To sum up, through the pulling mechanism 2 and the clamping mechanism 4, on the one hand, the motor 12 can simultaneously drive the pulling mechanism 2 and the clamping mechanism 4 to complete the pulling and clamping of the scion and the stock of the grafted seedlings during the rotation process, so that there is no need to add an additional driving device, saving more installation space, making the device lighter, more convenient to use and carry, thereby improving the detection efficiency of the grafted seedlings. On the other hand, after the grafted seedlings are completely clamped, the first rotating rod 13 cannot drive the driven gear 416 and the driving gear 414 to continue to rotate, which can avoid excessive clamping force causing damage to the grafted seedlings without adding sensors, thereby reducing the complexity of the device, reducing the difficulty of installation and debugging, and improving the reliability of the device.

[0047] Embodiment 2

[0048] During actual use, the angle between the pulling mechanism 2 and the clamping mechanism 4 cannot be adjusted according to the angle between the rootstock and the scion of the grafted seedling, which makes the device unable to adapt to various grafting methods, limits the scope of use of the device, and affects the detection efficiency. Therefore, this embodiment improves the device described in the above embodiment.

[0049] refer to Figures 2 to 7A rotating groove 46 is provided on one side of the fixed chuck 41 close to the main body 11, and a rotating ring 47 is fixedly connected to one end of the main body 11 close to the fixed chuck 41. The rotating ring 47 is rotatably connected in the rotating groove 46. A limiting hole 48 connected to the rotating groove 46 is provided on the outer wall of the fixed chuck 41. A limiting bolt 49 for limiting the rotation of the rotating ring 47 is threadedly connected in the limiting hole 48. A handle 14 for adjusting the length is threadedly connected to one end of the main body 11 away from the pulling mechanism 2.

[0050] During actual use, the angle between the pulling mechanism 2 and the clamping mechanism 4 is adjusted according to the angle between the grafted seedling rootstock and the scion. During adjustment, the limit bolt 49 is rotated to release the limit of the rotating ring 47, so that the rotating ring 47 can rotate in the rotating groove 46, thereby adjusting the angle between the pulling mechanism 2 and the clamping mechanism 4. At the same time, the overall length of the device can be adjusted by rotating the handle 14, which is more convenient for detection. After the adjustment is completed, the limit bolt 49 is screwed back to restrict the rotating ring 47 in the rotating groove 46 again to prevent the pulling mechanism 2 and the clamping mechanism 4 from rotating during the detection process.

[0051] To sum up, by setting up structures such as the rotating ring 47 and the limit bolt 49, the angle between the pulling mechanism 2 and the clamping mechanism 4 can be freely adjusted, so that it can adapt to various grafting methods, improve the versatility of the device, and reduce false detection caused by improper angles, improve the reliability of device detection, and further improve detection accuracy and efficiency.

[0052] Embodiment 3

[0053] During actual use, when pulling the grafted seedlings, the pulling force cannot be controlled, which will affect the detection accuracy and easily cause damage to the grafted seedlings, reducing the survival rate of the grafted seedlings. Therefore, this embodiment improves the device described in the above embodiment.

[0054] refer to Figure 1 and Figure 4 A telescopic groove 32 is provided on one side of the mounting block 31 close to the first threaded rod 26, and the first threaded rod 26 is slidably connected in the telescopic groove 32. Two symmetrically arranged extrusion grooves 33 are provided inside the telescopic groove 32. The outer wall of one end of the first threaded rod 26 located inside the telescopic groove 32 is provided with limiting grooves 34 that are the same in number and corresponding in position as the extrusion grooves 33. Limiting pins 35 that can be inserted into the corresponding limiting grooves 34 are slidably connected inside the two extrusion grooves 33. The limiting grooves 34 and the limiting pins 35 can be set to be circular arcs that can cooperate with each other.

[0055] refer to Figure 2 , Figure 4 and Figure 6The ends of the two limit pins 35 that are away from each other are both threadedly connected with an adjusting nut 36, and a first elastic member 37 is connected between the ends of the two limit pins 35 that are away from each other and the corresponding adjusting nut 36. A second elastic member 38 is connected between the end of the first threaded rod 26 located in the telescopic slot 32 and the telescopic slot 32. A conductive column 39 is provided at the end of the first threaded rod 26 located in the telescopic slot 32. A conductive contact 310 is provided inside the telescopic slot 32. The positions of the conductive column 39 and the conductive contact 310 correspond. A controller is provided inside the main body 11. The controller can detect the contact between the conductive column 39 and the conductive contact 310, and control the motor 12 to stop rotating when the conductive column 39 loses contact with the conductive contact 310.

[0056] During actual use, when the pulling mechanism 2 performs pulling detection on the grafted seedling scion, the grafted seedling scion is located in the pulling hook 27, and the two limit pins 35 are inserted into the corresponding limit groove 34 under the thrust of the corresponding first elastic member 37. At this time, the two limit pins 35 can limit the first threaded rod 26, so that the first threaded rod 26 cannot move in the telescopic groove 32.

[0057] When the driven bevel gear 24 is driven to rotate and drives the first threaded rod 26 and the pulling hook 27 to pull the grafted seedling scion, the pulling force will act on the corresponding limit pins 35 through the two limit grooves 34 on the first threaded rod 26. When the pulling force reaches the pressure threshold of the first elastic member 37, the first elastic member 37 will be compressed, and the two limit pins 35 will be squeezed into the corresponding extrusion grooves 33 by the corresponding limit grooves 34, thereby releasing the limit on the first threaded rod 26.

[0058] When the limit of the first threaded rod 26 is released, the first threaded rod 26 will slide in the telescopic groove 32 and stretch the second elastic member 38, and at the same time will drive the conductive column 39 to separate from the conductive contact piece 310. At this time, the controller can detect that the conductive column 39 loses contact with the conductive contact piece 310, and control the motor 12 to stop rotating, so as to avoid damage to the grafted seedlings. At this time, the displacement sensor 311 can detect the displacement of the pulling hook 27, and transmit the displacement data to the display mechanism 15 for display, so that the grafting quality of the grafted seedlings can be quickly judged according to the displacement of the conductive column 39 after losing contact with the conductive contact piece 310.

[0059] When the pulling hook 27 pulls the grafted seedling scion to the extreme position so that the mounting block 31 contacts the mounting box 21, the mounting block 31 and the pulling hook 27 cannot move further. At this time, continued pulling will also cause the two limit pins 35 to be squeezed into the corresponding extrusion grooves 33, and the control motor 12 will stop pulling the grafted seedling scion, thereby protecting the grafted seedling scion and avoiding excessive pulling.

[0060] It should be noted that when faced with grafted seedlings of different grafting times and types, the two adjusting nuts 36 can be turned to adjust the degree of compression of the first elastic member 37, thereby adjusting the pressure threshold triggered by the pull, so that grafted seedlings in different situations can be detected, further improving the applicability of the device.

[0061] To sum up, through the setting of the displacement detection mechanism 3, when the grafted seedlings are detected, when the pulling force reaches the threshold of the first elastic member 37, the first threaded rod 26 will stretch the second elastic member 38 to slide in the telescopic groove 32, so that the conductive column 39 loses contact with the conductive contact piece 310. After the controller detects that the conductive column 39 loses contact with the conductive contact piece 310, the control motor 12 stops rotating, thereby avoiding damage to the grafted seedlings. At this time, the displacement sensor 311 detects the displacement of the pulling hook 27 and transmits the displacement data to the display mechanism 15, so that the grafting quality of the grafted seedlings can be quickly judged according to the displacement of the conductive column 39 after the conductive contact piece 310 loses contact, and the compression degree of the first elastic member 37 can be adjusted by rotating the two adjusting nuts 36, thereby adjusting the pressure threshold of the pulling trigger, so that the grafted seedlings in different situations can be detected, further improving the applicability of the device.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A detection device for grafted seedlings, characterized in that: The handheld device comprises a handheld portion (1), wherein the handheld portion (1) comprises a main body (11), a pulling mechanism (2) is provided at one end of the main body (11), a displacement detection mechanism (3) is provided on the pulling mechanism (2), and a clamping mechanism (4) is provided at the other end of the pulling mechanism (2) away from the main body (11); The pulling mechanism (2) comprises a mounting box (21) fixedly connected to one end of the main body (11), a driving chamber (22) and a driven chamber (23) being provided inside the mounting box (21), a first sliding groove (25) being provided in a through-shaped manner on a side of the mounting box (21) close to the clamping mechanism (4), a first threaded rod (26) being slidably connected inside the first sliding groove (25), and a pulling hook (27) being provided at one end of the first threaded rod (26) close to the clamping mechanism (4) for pulling the scion of the grafted seedling during the detection process; The displacement detection mechanism (3) comprises a mounting block (31) fixedly connected to the pulling hook (27) and close to one side of the first threaded rod (26); a telescopic groove (32) is provided on one side of the mounting block (31) close to the first threaded rod (26); the first threaded rod (26) is slidably connected in the telescopic groove (32); a conductive column (39) is provided at one end of the first threaded rod (26) located in the telescopic groove (32); a conductive contact piece (310) is provided inside the telescopic groove (32); the conductive column (39) corresponds to the position of the conductive contact piece (310); a displacement sensor (311) for detecting displacement data of the pulling hook (27) is provided at the bottom of the mounting block (31); the displacement sensor (311) is used to control the pulling force of the pulling mechanism (2) by detecting the contact between the conductive column (39) and the conductive contact piece (310), and detect the grafted seedling by the displacement of the pulling mechanism (2); Two symmetrically arranged extrusion grooves (33) are provided inside the telescopic groove (32); the outer wall of one end of the first threaded rod (26) located inside the telescopic groove (32) is provided with limit grooves (34) of the same number and corresponding positions as the extrusion grooves (33); the insides of the two extrusion grooves (33) are both slidably connected with limit pins (35) capable of being inserted into the corresponding limit grooves (34); the ends of the two limit pins (35) away from each other are both threadedly connected with adjustment nuts (36); the ends of the two limit pins (35) away from each other are both connected with first elastic members (37) between the ends of the two limit pins (35) away from each other and the corresponding adjustment nuts (36); and the end of the first threaded rod (26) located inside the telescopic groove (32) is connected with a second elastic member (38) between the end of the first threaded rod (26) located inside the telescopic groove (32) and the telescopic groove (32); The first slide groove (25) is communicated with the interior of the driven chamber (23); the interior of the driven chamber (23) is rotatably connected to a driven bevel gear (24); and a threaded structure capable of cooperating with the first threaded rod (26) is provided on the inner side of the driven bevel gear (24); when the driven bevel gear (24) rotates, the first threaded rod (26) can be driven to slide under the limiting action of the first slide groove (25), and the scion of the grafted seedling can be pulled by the pulling hook (27); The clamping mechanism (4) comprises a fixed clamp (41) and a movable clamp (42); a second threaded rod (43) is fixedly connected to a side of the movable clamp (42) close to the fixed clamp (41); a second slide groove (44) corresponding to the position of the second threaded rod (43) is provided on the fixed clamp (41); the second threaded rod (43) is slidably connected in the second slide groove (44); and a clamping groove (45) for clamping a grafted seedling stock is provided on a side of the fixed clamp (41) and the movable clamp (42) close to each other.

2. The grafted seedling detection device according to claim 1, characterized in that: A motor (12) is installed inside the main body (11); an output end of the motor (12) is fixedly connected to a first rotating rod (13) rotatably connected to the driving chamber (22); the first rotating rod (13) is fixedly connected to a driving bevel gear (28); a second rotating rod (29) is rotatably connected between the driving chamber (22) and the driven chamber (23); both ends of the second rotating rod (29) are fixedly connected to transition bevel gears (210) respectively meshing with the driving bevel gear (28) and the driven bevel gear (24).

3. The grafted seedling detection device according to claim 2, characterized in that: A rotation groove (46) is formed on one side of the fixing chuck (41) close to the main body (11); a rotation ring (47) is fixedly connected to one end of the main body (11) close to the fixing chuck (41); the rotation ring (47) is rotationally connected in the rotation groove (46); a limiting hole (48) connected to the rotation groove (46) is formed on the outer wall of the fixing chuck (41); a limiting bolt (49) for limiting the rotation of the rotation ring (47) is threadedly connected to the inner wall of the limiting hole (48).

4. The grafted seedling detection device according to claim 3, characterized in that: A driving groove (410) and a connecting groove (411) are provided inside the fixed chuck (41), and the driving groove (410) is connected to the connecting groove (411); one end of the first rotating rod (13) extending into the driving groove (410) is fixedly connected to a friction disk (412); a rotating disk (413) sleeved on the outer wall of the first rotating rod (13) is rotatably connected inside the driving groove (410); a driving gear (414) sleeved on the outer wall of the first rotating rod (13) is provided between the friction disk (412) and the rotating disk (413); a third elastic member (415) sleeved on the first rotating rod (13) is connected between the driving gear (414) and the rotating disk (413); and the driving gear (414) can contact the friction disk (412) under the thrust of the third elastic member (415).

5. The grafted seedling detection device according to claim 4, characterized in that: The interior of the connecting groove (411) is rotatably connected to a driven gear (416) meshing with the driving gear (414); the interior of the driven gear (416) is provided with a threaded structure capable of cooperating with the second threaded rod (43); when the driven gear (416) rotates, it can drive the second threaded rod (43) to slide under the limiting action of the second sliding groove (44), and drive the movable clamp (42) to clamp or release the rootstock of the grafted seedling.

6. The grafted seedling detection device according to claim 5, characterized in that: A controller is disposed inside the main body (11), and the controller is capable of detecting the contact status between the conductive column (39) and the conductive contact sheet (310), and controlling the motor (12) to stop rotating when the conductive column (39) and the conductive contact sheet (310) lose contact.

7. The grafted seedling detection device according to claim 6, characterized in that: One end of the main body (11) away from the pulling mechanism (2) is threadedly connected to a handle (14) for adjusting the length, and a display mechanism (15) for displaying detection data of the displacement sensor (311) is provided on the main body (11).

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