Citrus fruit shaping and pruning device based on crown structure

Abstract

The invention belongs to the technical field of crown shaping and pruning, and discloses a crown structure-based citrus fruit shaping and pruning device, which comprises a scissor head, a self-retracting and releasing mechanism, a first handle, a second handle, a third handle, a third handle, a fourth handle, a fourth handle, a fourth handle, a fourth handle and a fourth handle, and the bottom of the second handle is fixedly connected with the bottom of the scissor head. And the self-retracting mechanism is arranged at the top of the first handle and on one side far away from the second handle. Through cooperation of structures such as the rotating rod, the first handle and the second handle, the angle of the scissor head can be changed at will within a certain range, through cooperation of the worm gear and the worm, the angle of the second handle is changed from the state that the second handle is parallel to the first handle, transverse branches growing in a local area in a tree crown can be pruned, and the pruning efficiency is improved. The defect of inaccurate visual distance and angle in the prior art is overcome, orchard workers do not need to change positions and angles on the periphery to prune miscellaneous branches, and the pruning speed is effectively increased.

Description

Technical Field

[0001] The invention belongs to the technical field of tree crown shaping and pruning, and in particular is a citrus fruit shaping and pruning device based on a tree crown structure. Background Art

[0002] In order to increase the color and sugar content of the fruit, maintain the tree vigor, make the crown skeleton compact and firm, able to withstand the pressure of high yield, and strengthen the fruiting ability inside the branch group, the inner core of the crown and the hanging branches, it is necessary to regularly repair the crown of the fruit tree through crown shaping and pruning devices. In order to ensure the quality of fruit hanging and the permeability between the crown branches, attention should be paid to keeping the branches starting from the trunk and growing radially during shaping.

[0003] However, the existing fruit shaping and pruning devices still have disadvantages in actual use: for fruit trees that have already taken shape, the pruning devices are usually equipped with long poles to facilitate pruning of branches high up in the crown and inside. However, due to the straightness of the long poles, for branches growing laterally in different directions, fruit farmers need to take out the pruning devices back and forth many times, change the angle to find a suitable position to cut the branches. Due to the problems of inaccurate visual distance and angle caused by the crown branches, the pruning rate is low, and it is easy to ignore some laterally growing branches when changing positions, resulting in excessive density between the local crown branches and leaves, forming obstructions, resulting in reduced permeability, and adversely affecting the quality of the fruit. Summary of the invention

[0004] In order to solve the problem of low pruning rate for branches growing laterally in different directions raised in the above background technology, the present invention provides a citrus fruit shaping and pruning device based on a crown structure.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a citrus fruit shaping and pruning device based on a crown structure, comprising a scissor head, a second handle fixedly connected to the bottom of the scissor head, an end of the second handle away from the scissor head abutting against the first handle, and further comprising:

[0006] A self-retracting mechanism, which is arranged on the top of the first handle and on a side away from the second handle, and is used to adjust the tension of the retracting rope adaptively while adjusting the trimming angle;

[0007] A bending and expansion mechanism, the bending and expansion mechanism is located between the second handle and the first handle, and the bending and expansion mechanism is fixedly connected to the top edge of the second handle;

[0008] Wherein, the self-retracting mechanism comprises a clamping member, and the clamping member is located on a side of the first handle away from the second handle;

[0009] The clamping member comprises a sleeve, the lower end of the inner cavity of the sleeve is slidably connected to a winding drum, the middle of the winding drum is fixedly connected to a pull rope, the pull rope is fixedly passed through the inner wall of the winding drum, and the outer wall of the pull rope is reversely wound around the outer wall of the winding drum;

[0010] The bending and expanding mechanism comprises an expanding piece, and the expanding piece is located in the middle of the inner cavity of the scissor head.

[0011] Preferably, the clamping member also includes a positioning plate, which is fixedly connected to the inner wall of the sleeve, and the inner wall of the positioning plate is rotatably connected to a rotating shaft, one end of the rotating shaft is fixedly connected to a second bevel gear, the outer wall of the second bevel gear is meshingly connected to the first bevel gear, and the other end of the rotating shaft is fixedly connected to a limiting sleeve.

[0012] Preferably, a rectangular block is fixedly connected to the top of the winding reel, the outer wall of the rectangular block is clamped on the inner wall of the limiting sleeve, the middle part of the inner cavity of the sleeve is fixedly connected to a guide plate, the middle part of the guide plate is provided with a short slide groove, the outer wall of the rectangular block is slidably connected in the short slide groove, and the outer wall of the limiting sleeve is rotatably connected to the inner wall of the guide plate.

[0013] Preferably, one end of the pull rope slides through the inner wall of the first handle, the other end of the pull rope slides through the inner wall of the second handle, and one end of the pull rope close to the scissors head extends out of the second handle and is fixedly connected to the scissors head.

[0014] Preferably, the self-retracting mechanism further comprises a rotating member, and the rotating member is located at the top of the first handle;

[0015] The rotating member includes a support plate fixedly connected to the top of the first handle, the top of the support plate is rotatably connected to a rotating rod, the end of the rotating rod close to the sleeve is fixedly connected to a handwheel, the outer wall of the rotating rod is fixedly passed through the center of the first bevel gear, and a lock is fixedly connected to the side of the support plate close to the handwheel, and the middle part of the lock is sleeved on the outer wall of the rotating rod.

[0016] Preferably, the extension piece includes a beveled push block, which is laterally slidably connected to the scissors head, the outer wall of the beveled push block abuts against a lifting plate, the outer wall of the lifting plate longitudinally slides in the scissors head, the two sides of the lifting plate are symmetrically rotatably connected with arc-shaped push rods, the bottoms of a pair of arc-shaped push rods are both rotatably connected to the edge of the scissors head, the side of the beveled push block away from the scissors head is fixedly connected with a snap ring rope, the outer wall of the snap ring rope penetrates the top edge of the sleeve, the side of the snap ring rope away from the scissors head is sleeved with a telescopic sleeve column, the bottom of the telescopic sleeve column is movably sleeved on the outer wall of the rotating rod, the bottom of the telescopic sleeve column slides against an eccentric wheel, and the inner wall of the eccentric wheel is fixedly sleeved on the outer wall of the rotating rod.

[0017] Preferably, the bending and expansion mechanism includes a protective shell, the bottom of the protective shell is fixedly connected to the edge of the support plate, the outer wall of the rotating rod rotates and passes through the inner wall of the protective shell, and the rotating rod is fixedly connected to a worm located inside the protective shell.

[0018] Preferably, the outer wall of the worm is meshed with a worm wheel, the center of the worm wheel is rotatably connected to a fixing frame, the bottom of the fixing frame is fixedly connected to the edge of the first handle, the side of the worm wheel away from the first handle is fixedly connected to the second handle, the worm wheel and the pull rope are respectively located on both sides of the second handle (4) and are used to connect the second handle and the first handle.

[0019] Preferably, the limiting sleeve is opened on one side close to the rectangular block.

[0020] Preferably, a trigger is fixedly connected to a side of the first handle away from the second handle, an electric handle is fixedly connected to a side of the trigger away from the first handle, and an end of the pull rope away from the second handle slides through the trigger.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The invention cooperates with the structures such as the rotating rod, the first handle and the second handle, thereby facilitating the scissor head to change its angle arbitrarily within a certain range. The worm gear and the worm are cooperated to change the angle of the second handle from a state parallel to the first handle, so that the lateral branches growing in the local area of ​​the crown can be pruned, which makes up for the shortcomings of the prior art in that the visual distance and angle are inaccurate, and the fruit farmer does not need to change the position and angle at the periphery to prune the miscellaneous branches, thereby effectively improving the pruning speed.

[0023] Secondly, with the setting of the arc-shaped push rod, after the scissor head reaches the area to be pruned, the rotating rod starts to rotate, the clamping rope can be separated from the telescopic sleeve, and finally, under the thrust of the third reset spring, the arc-shaped push rod rotates and expands, pushing away the dense branches and leaves around the scissor head, broadening the field of vision, effectively avoiding the obstruction caused by dense branches and leaves, further improving the pruning speed, and being able to adapt to the pruning of tree crowns at different levels, avoiding the first handle squeezing and bending the external or bottom branches during pruning, affecting the activity of the branches, thereby increasing the convenience of pruning horizontal branches, reducing the lateral growth of crown branches, ensuring radial growth of branches, ensuring permeability, and improving the quality of fruit hanging.

[0024] The present invention facilitates the balanced adjustment of the tensioning force of the pull rope by arranging the cooperation of structures such as the guide plate, the limit sleeve and the rectangular block. Since a short sliding groove is provided on the inner wall of the guide plate and the limit sleeve is opened on the side close to the rectangular block, the rectangular block can be slid out of the limit sleeve during the shearing process using the scissors head, so that the tensioning force of the pull rope is always balanced and consistent, which is beneficial to improving its service life.

[0025] The present invention cooperates with structures such as the winding drum and the pull rope setting, thereby facilitating the shearing force of the scissors head to remain consistent. When the rotating rod rotates, the pull rope is wound around the outer wall of the winding drum, or the wound pull rope is released, thereby ensuring the accurate controllability of the scissors head and thus ensuring the effectiveness of branch cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the structural matching relationship between the first handle and the second handle of the present invention;

[0028] Figure 3 It is a schematic diagram of a first side sectional structure of the present invention;

[0029] Figure 4 For the present invention Figure 3 A schematic diagram of the partially enlarged structure at center A;

[0030] Figure 5 It is a schematic diagram of the structural matching relationship between the guide plate and the winding drum of the present invention;

[0031] Figure 6 It is a schematic diagram of the structural matching relationship between the guide plate and the limiting sleeve of the present invention;

[0032] Figure 7 This is a schematic diagram of the structural matching relationship between the limit clamp and the rectangular block of the present invention;

[0033] Figure 8 It is a schematic diagram of the structural matching relationship between the winding drum and the sleeve of the present invention;

[0034] Fig. 9 It is a schematic diagram of the structural matching relationship between the draw cord and the winding drum of the present invention;

[0035] Fig.10 It is a schematic diagram of a second side sectional structure of the present invention;

[0036] Fig.11 For the present invention Fig.10 A schematic diagram of the partially enlarged structure at B in the middle;

[0037] Fig.12 It is a schematic diagram of the structural matching relationship between the scissor head and the bevel push block of the present invention;

[0038] Fig.13 It is a schematic diagram of the structural matching relationship between the telescopic sleeve and the eccentric wheel of the present invention.

[0039] In the figure:

[0040] 1. Electric handle; 2. Trigger; 3. First handle; 4. Second handle; 5. Self-retracting and releasing mechanism; 51. Rotating member; 511. Rotating rod; 512. Hand wheel; 513. Support plate; 52. Snap-on member; 521. Sleeve; 522. Pull rope; 523. Winding drum; 524. Guide plate; 525. Positioning plate; 526. Second bevel gear; 527. First bevel gear; 528. Limiting sleeve; 529. Rectangular block; 5210. Rotating shaft; 5211. Lock; 6. Bending and extending mechanism; 61. Protective shell; 62. Worm gear; 63. Worm; 64. Fixed frame; 65. Extension member; 651. Snap ring rope; 652. Bevel push block; 653. Lifting plate; 654. Arc push rod; 655. Telescopic sleeve; 656. Eccentric wheel; 7. Scissor head. DETAILED DESCRIPTION

[0041] 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.

[0042] like Figures 1 to 13 As shown, the present invention provides a citrus fruit shaping and pruning device based on a crown structure, comprising a scissor head 7, a second handle 4 is fixedly connected to the bottom of the scissor head 7, and an end of the second handle 4 away from the scissor head 7 is abutted against a first handle 3, and further comprising:

[0043] A self-retracting mechanism 5, which is arranged at the top of the first handle 3 and at a side away from the second handle 4, and is used to adjust the tension of the retracting rope while adjusting the trimming angle;

[0044] A bending and expansion mechanism 6, the bending and expansion mechanism 6 is located between the second handle 4 and the first handle 3, and the bending and expansion mechanism 6 is fixedly connected to the top edge of the second handle 4;

[0045] The self-retracting mechanism 5 includes a clamping member 52, and the clamping member 52 is located on a side of the first handle 3 away from the second handle 4;

[0046] The clamping member 52 includes a sleeve 521, the lower end of the inner cavity of the sleeve 521 is slidably connected to a winding drum 523, the middle of the winding drum 523 is fixedly connected to a pull rope 522, the pull rope 522 is fixedly passed through the inner wall of the winding drum 523, and the outer wall of the pull rope 522 is reversely wound around the outer wall of the winding drum 523;

[0047] The bending and expanding mechanism 6 comprises an expanding member 65 , and the expanding member 65 is located in the middle of the inner cavity of the scissor head 7 .

[0048] The above scheme is adopted: the pull rope 522 can be wound around the outer wall of the winding drum 523 through the forward and reverse rotation of the winding drum 523, or the rotation direction of the rotating rod 511 can be changed to release the wound pull rope 522, so that when the angle of the scissors head 7 is adjusted, the lateral distance of the pull rope 522 is automatically extended or shortened, so that when the trigger 2 pulls the pull rope 522, there is enough power to drive the scissors head 7, and the extension piece 65 is triggered at the same time as the rotating rod 511 is driven, and is used to push away the dense branches and leaves around the scissors head 7 to achieve the effect of anti-blocking.

[0049] like Figures 5 to 9 As shown, the clamping member 52 also includes a positioning plate 525, which is fixedly connected to the inner wall of the sleeve 521. The inner wall of the positioning plate 525 is rotatably connected to a rotating shaft 5210. One end of the rotating shaft 5210 is fixedly connected to a second bevel gear 526. The outer wall of the second bevel gear 526 is meshingly connected to the first bevel gear 527. The other end of the rotating shaft 5210 is fixedly connected to a limiting sleeve 528.

[0050] A rectangular block 529 is fixedly connected to the top of the winding reel 523, and the outer wall of the rectangular block 529 is clamped on the inner wall of the limiting sleeve 528. A guide plate 524 is fixedly connected to the middle of the inner cavity of the sleeve 521. A short sliding groove is opened in the middle of the guide plate 524. The outer wall of the rectangular block 529 is slidably connected to the short sliding groove, and the outer wall of the limiting sleeve 528 is rotatably connected to the inner wall of the guide plate 524.

[0051] One end of the pull rope 522 slides through the inner wall of the first handle 3 , and the other end of the pull rope 522 slides through the inner wall of the second handle 4 . One end of the pull rope 522 close to the scissors head 7 extends out of the second handle 4 and is fixedly connected to the scissors head 7 .

[0052] The above scheme is adopted: when the trigger 2 is pressed, the pull rope 522 and the winding drum 523 are driven as a whole to move closer to the direction of the trigger 2, and after releasing the hand, the rectangular block 529 can be clamped in the limiting sleeve 528 again along the short slide groove, which is convenient for the next adaptive retraction and adjustment, and improves the durability of the device. The clamping part 52 supports the second bevel gear 526 through the positioning plate 525, and limits the limiting sleeve 528 through the guide plate 524, so that the limiting sleeve 528 cannot slide and can only rotate, and cooperates with the short slide groove opened in the middle of the guide plate 524, so that the rectangular block 529 can slide into the short slide groove, thereby ensuring the effective pulling of the pull rope 522.

[0053] like Figure 2 and Figure 6 As shown, the self-retracting mechanism 5 further includes a rotating member 51, and the rotating member 51 is located at the top of the first handle 3;

[0054] The rotating member 51 includes a support plate 513 fixedly connected to the top of the first handle 3, the top of the support plate 513 is rotatably connected to a rotating rod 511, one end of the rotating rod 511 close to the sleeve 521 is fixedly connected to a handwheel 512, the outer wall of the rotating rod 511 is fixedly passed through the center of the first bevel gear 527, and a lock buckle 5211 is fixedly connected to the side of the support plate 513 close to the handwheel 512, and the middle part of the lock buckle 5211 is sleeved on the outer wall of the rotating rod 511.

[0055] The above scheme is adopted: the worm 63 and the first bevel gear 527 can be driven to rotate at the same time through the rotating rod 511, so that the self-retracting mechanism 5 and the bending and expansion mechanism 6 can move synchronously, and the lock buckle 5211 makes the rotating rod 511 maintain a self-locking state after each rotation, thereby ensuring that the winding rope 522 in the wound state will not drive the winding drum 523 to rotate during the movement, which is used to prevent the rotating rod 511 from being driven to rotate in the opposite direction. The lock buckle 5211 adopts the existing press-type structure. When pressed for the first time, the internal parts extend into the rotating rod 511 to achieve locking. Pressing it again resets it to release the lock. This is the existing technology and will not be described in detail in the text.

[0056] like Figures 1 to 4 and Figures 10 to 13 As shown, the extension piece 65 includes a beveled push block 652, which is laterally slidably connected to the scissor head 7, the outer wall of the beveled push block 652 abuts against a lifting plate 653, the outer wall of the lifting plate 653 slides longitudinally in the scissor head 7, and the two sides of the lifting plate 653 are symmetrically rotatably connected with arc push rods 654, and the bottoms of a pair of arc push rods 654 are both rotatably connected to the edge of the scissor head 7, and the side of the beveled push block 652 away from the scissor head 7 is fixedly connected with a clamping ring rope 651, the outer wall of the clamping ring rope 651 penetrates the top edge of the sleeve 521, and the side of the clamping ring rope 651 away from the scissor head 7 is sleeved with a telescopic sleeve column 655, the bottom of the telescopic sleeve column 655 is movably sleeved on the outer wall of the rotating rod 511, the bottom of the telescopic sleeve column 655 slides against an eccentric wheel 656, and the inner wall of the eccentric wheel 656 is fixedly sleeved on the outer wall of the rotating rod 511.

[0057] The bending and expansion mechanism 6 includes a protective shell 61 , the bottom of which is fixedly connected to the edge of the support plate 513 , the outer wall of the rotating rod 511 rotates through the inner wall of the protective shell 61 , and the rotating rod 511 is fixedly connected to a worm 63 located inside the protective shell 61 .

[0058] The outer wall of the worm 63 is meshed with a worm wheel 62, and a fixing frame 64 is rotatably connected to the center of the worm wheel 62. The bottom of the fixing frame 64 is fixedly connected to the edge of the first handle 3, and the side of the worm wheel 62 away from the first handle 3 is fixedly connected to the second handle 4. The worm wheel 62 and the pull rope 522 are respectively located on both sides of the second handle 4 and are used to connect the second handle 4 and the first handle 3.

[0059] The above scheme is adopted: a first return spring is sleeved between the bottom of the telescopic sleeve 655 and the top of the inner cavity of the sleeve 521, which is used to reset the telescopic sleeve 655, and a transverse plate is provided at the bottom of the telescopic sleeve 655, which is used for the eccentric wheel 656 to press downward to push the telescopic sleeve 655 into the sleeve 521, and a second return spring is fixedly connected to the side of the bevel push block 652 away from the clamping ring rope 651, which is used to separate the bevel push block 652 from the position of the lifting plate 653, and a third return spring is fixedly connected to the bottom of the lifting plate 653, which is used to push the lifting plate 653 out, further push the bottom of the arc push rod 654, so that the arc push rod 654 can achieve the expansion effect, and the second handle 4 rotates with the worm gear 62 as the axis, so that the scissors head 7 can change the angle arbitrarily within a certain range, so as to achieve the effect of pruning all the transverse branches growing in the local area inside the crown.

[0060] like Figure 1 and Figure 8 As shown, the side of the limiting sleeve 528 close to the rectangular block 529 is opened; the side of the first handle 3 away from the second handle 4 is fixedly connected to the trigger 2, and the side of the trigger 2 away from the first handle 3 is fixedly connected to the electric handle 1, and the end of the pull rope 522 away from the second handle 4 slides through the trigger 2.

[0061] The above solution is adopted: the interior of the trigger 2 is provided with a tensile assembly and a return spring and other structures commonly used in the prior art, which are used to cooperate with the electric handle 1 to move the pull rope 522 to achieve the effect of triggering the scissor head 7 to cut the branches.

[0062] The working principle and use process of the present invention:

[0063] First, during shaping and pruning, the fruit farmer holds the electric handle 1, lifts the scissor head 7 to the crown of the fruit tree through the first handle 3 and the second handle 4, aims the scissor head 7 at the outer branches that are easy to prune, and presses the trigger 2 to cut off the miscellaneous branches growing laterally. For the miscellaneous branches inside the crown, the fruit farmer can continue to reach into the scissor head 7, and at the same time, use the thumb of one hand to turn the hand wheel 512 to rotate, thereby rotating the rotating rod 511, and the rotating rod 511 drives the worm 63 to rotate synchronously, and then the worm 63 can also drive the meshing worm wheel 62 to rotate, and the worm 63 can also drive the meshing worm wheel 62 to rotate. The worm wheel 62 is rotatably connected to the first handle 3 through the fixing frame 64, so when the worm wheel 62 rotates, the second handle 4 can also be driven to rotate, and the second handle 4 changes its angle from a state parallel to the first handle 3, thereby driving the position of the scissor head 7 at the end to change, so that the scissor head 7 can change its angle arbitrarily within a certain range, and the horizontal branches growing in the local area inside the crown can be pruned, which makes up for the lack of visual distance and angle inaccuracy, and there is no need for fruit farmers to change their position and angle at the periphery to prune miscellaneous branches, effectively improving the pruning speed;

[0064] At the same time Fig.13As shown, the rotation of the rotating rod 511 can also drive the eccentric wheel 656 to rotate synchronously. When the longer side of the eccentric wheel 656 squeezes the transverse plate at the bottom of the telescopic sleeve column 655, the transverse plate moves downward and the telescopic sleeve column 655 can be driven to move downward as a whole, so that the clamping ring rope 651 sleeved on the top thereof is separated. At this time, the telescopic sleeve column 655 can be reset under the action of the first reset spring, and the clamping ring rope 651 is pulled by the pulling force of the second reset spring when it is separated, and moves toward the direction of the scissors head 7, and the second reset spring also synchronously pulls the bevel push block 652 to make the bevel The side push block 652 is away from the lifting plate 653, so that the lifting plate 653 moves upward under the thrust of the third return spring. Since the bottoms of the pair of arc-shaped push rods 654 are both rotatably connected to the edge of the scissor head 7, under the action of the lever principle, the lifting plate 653 pushes the bottom of the arc-shaped push rod 654 upward, and the top of the arc-shaped push rod 654 changes from a contracted state to a rotated downward pressing state to complete the expansion, thereby pushing away the dense branches and leaves around the scissor head 7, so that the fruit farmer can have a wide field of vision when pruning, effectively avoid the obstruction caused by dense branches and leaves, and help improve the pruning speed;

[0065] Secondly, when the rotating rod 511 rotates, it can also drive the first bevel gear 527 on the outer wall to rotate, and the second bevel gear 526 is synchronously driven by the first bevel gear 527, and then the rotating shaft 5210 and the limiting clamping sleeve 528 are also rotated at the same time. When the limiting clamping sleeve 528 rotates, the rectangular block 529 clamped on its inner wall can be driven to rotate, and then the rectangular block 529 drives the winding drum 523 to rotate, so that the pull rope 522 is wound around the outer wall of the winding drum 523, or the rotation direction of the rotating rod 511 is changed. The wound pull rope 522 is released, and the specific configuration is as follows: when the second handle 4 rotates relative to the first handle 3, so that the first handle 3 and the second handle 4 are in a bent state, the pull rope 522 is released from the winding drum 523; when the second handle 4 rotates parallel to the first handle 3, the pull rope 522 is wound on the outer wall of the winding drum 523, so that the tension of the pull rope 522 is balanced and adjusted, which is conducive to the shearing force of the scissors head 7 to always remain consistent, thereby ensuring the effectiveness of shearing of miscellaneous branches;

[0066] Finally, through the short slide groove opened on the inner wall of the guide plate 524 and the opening setting on one side of the limiting sleeve 528 close to the rectangular block 529, the fruit farmer presses the trigger 2, starts the electric handle 1 to generate driving force, and drives the pull rope 522 and the winding drum 523 as a whole to approach the trigger 2. At this time, the rectangular block 529 can slide out of the limiting sleeve 528 and slide in the short slide groove. At this time, the pull rope 522 can rotate the blade on one side of the scissors head 7 to cut off the branches through the shear force. Then the fruit farmer lets go to reset the trigger 2, and the winding drum 523 and the pull rope 522 are also reset. The rectangular block 529 is again clamped in the limiting sleeve 528, which is convenient for the next adaptive retraction and adjustment. The tensioning force of the pull rope 522 is always balanced and consistent, which is beneficial to improve its service life.

[0067] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0068] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A citrus fruit shaping and pruning device based on a crown structure, comprising a scissor head (7), a second handle (4) fixedly connected to the bottom of the scissor head (7), and an end of the second handle (4) away from the scissor head (7) abutting against a first handle (3), characterized in that: Also includes: A self-retracting mechanism (5), the self-retracting mechanism (5) being arranged at the top of the first handle (3) and at a side away from the second handle (4), the self-retracting mechanism (5) being used to adaptively adjust the tension of the retracting rope while adjusting the trimming angle; A bending and expansion mechanism (6), wherein the bending and expansion mechanism (6) is located between the second handle (4) and the first handle (3), and the bending and expansion mechanism (6) is fixedly connected to the top edge of the second handle (4); Wherein, the self-retracting mechanism (5) comprises a clamping member (52), and the clamping member (52) is located on a side of the first handle (3) away from the second handle (4); The clamping member (52) comprises a sleeve (521), the lower end of the inner cavity of the sleeve (521) is slidably connected to a winding drum (523), the middle part of the winding drum (523) is fixedly connected to a pull rope (522), the pull rope (522) is fixedly passed through the inner wall of the winding drum (523), and the outer wall of the pull rope (522) is reversely wound around the outer wall of the winding drum (523); The bending and expanding mechanism (6) comprises an expanding piece (65), and the expanding piece (65) is located in the middle of the inner cavity of the scissor head (7).

2. The citrus fruit shaping and pruning device based on the crown structure according to claim 1 is characterized in that: The clamping member (52) further comprises a positioning plate (525), wherein the positioning plate (525) is fixedly connected to the inner wall of the sleeve (521), the inner wall of the positioning plate (525) is rotatably connected to a rotating shaft (5210), one end of the rotating shaft (5210) is fixedly connected to a second bevel gear (526), ​​the outer wall of the second bevel gear (526) is meshingly connected to a first bevel gear (527), and the other end of the rotating shaft (5210) is fixedly connected to a limiting sleeve (528).

3. The citrus fruit shaping and pruning device based on the crown structure according to claim 2 is characterized in that: A rectangular block (529) is fixedly connected to the top of the winding drum (523), and the outer wall of the rectangular block (529) is clamped on the inner wall of the limiting sleeve (528). A guide plate (524) is fixedly connected to the middle of the inner cavity of the sleeve (521), and a short sliding groove is opened in the middle of the guide plate (524). The outer wall of the rectangular block (529) is slidably connected to the short sliding groove, and the outer wall of the limiting sleeve (528) is rotatably connected to the inner wall of the guide plate (524).

4. The citrus fruit shaping and pruning device based on the crown structure according to claim 1, characterized in that: One end of the pull rope (522) slides through the inner wall of the first handle (3), and the other end of the pull rope (522) slides through the inner wall of the second handle (4). One end of the pull rope (522) close to the scissors head (7) extends out of the second handle (4) and is fixedly connected to the scissors head (7).

5. The citrus fruit shaping and pruning device based on the crown structure according to claim 2, characterized in that: The self-retracting and releasing mechanism (5) further comprises a rotating member (51), wherein the rotating member (51) is located at the top of the first handle (3); The rotating member (51) comprises a support plate (513) fixedly connected to the top of the first handle (3); the top of the support plate (513) is rotatably connected to a rotating rod (511); one end of the rotating rod (511) close to the sleeve (521) is fixedly connected to a hand wheel (512); the outer wall of the rotating rod (511) is fixedly passed through the center of the first bevel gear (527); a lock buckle (5211) is fixedly connected to one side of the support plate (513) close to the hand wheel (512); and the middle part of the lock buckle (5211) is sleeved on the outer wall of the rotating rod (511).

6. The citrus fruit shaping and pruning device based on the crown structure according to claim 5, characterized in that: The extension member (65) comprises a bevel push block (652), the bevel push block (652) is slidably connected in the scissor head (7) in a transverse direction, the outer wall of the bevel push block (652) is in contact with a lifting plate (653), the outer wall of the lifting plate (653) is longitudinally slidable in the scissor head (7), the two sides of the lifting plate (653) are symmetrically rotatably connected with arc push rods (654), the bottoms of a pair of arc push rods (654) are both rotatably connected to the edge of the scissor head (7), and the bevel push block (652) is far away from the scissor head (7). A clamping ring rope (651) is fixedly connected to the side away from the scissor head (7), and the outer wall of the clamping ring rope (651) penetrates the top edge of the sleeve (521). A telescopic sleeve column (655) is sleeved on the side of the clamping ring rope (651) away from the scissor head (7), and the bottom of the telescopic sleeve column (655) is movably sleeved on the outer wall of the rotating rod (511). An eccentric wheel (656) is slidably abutted on the bottom of the telescopic sleeve column (655), and the inner wall of the eccentric wheel (656) is fixedly sleeved on the outer wall of the rotating rod (511).

7. The citrus fruit shaping and pruning device based on the crown structure according to claim 5, characterized in that: The bending and expansion mechanism (6) also includes a protective shell (61), the bottom of the protective shell (61) is fixedly connected to the edge of the support plate (513), the outer wall of the rotating rod (511) rotates and penetrates the inner wall of the protective shell (61), and the rotating rod (511) is fixedly connected to a worm (63) located inside the protective shell (61).

8. The citrus fruit shaping and pruning device based on the crown structure according to claim 7, characterized in that: The outer wall of the worm (63) is meshed with a worm wheel (62), and a fixing frame (64) is rotatably connected to the center of the worm wheel (62). The bottom of the fixing frame (64) is fixedly connected to the edge of the first handle (3). The side of the worm wheel (62) away from the first handle (3) is fixedly connected to the second handle (4). The worm wheel (62) and the pull rope (522) are respectively located on both sides of the second handle (4) and are used to connect the second handle (4) and the first handle (3).

9. The citrus fruit shaping and pruning device based on the crown structure according to claim 3, characterized in that: The limiting sleeve (528) is provided with an opening on one side close to the rectangular block (529).

10. The citrus fruit shaping and pruning device based on the crown structure according to claim 1, characterized in that: The side of the first handle (3) away from the second handle (4) is fixedly connected to a trigger (2), the side of the trigger (2) away from the first handle (3) is fixedly connected to an electric handle (1), and the end of the pull rope (522) away from the second handle (4) slides through the trigger (2).

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