Pear tree fruit thinning device

Abstract

The utility model relates to the technical field of pear tree management devices, in particular to a pear tree fruit thinning device. Comprising an upper plate, a rectangular groove is formed in the upper portion of the upper plate, the portions, on the left side and the right side of the groove, of the upper plate form shifting rods, the upper ends of the shifting rods are pointed ends, and the portions, on the left side and the right side of the groove, of the upper plate are elastically and rotationally connected with cutting assemblies; the rotating rod is connected with a driving unit, the driving unit can enable the free ends of the blades to rotate towards the middle of the upper plate, forward projections of motion trails of the free ends of the two blades from front to back have an intersection point, a supporting rod is fixed to the lower end of the upper plate, and a handle is fixed to the lower end of the supporting rod. According to the device, the groove is formed in the upper part of the upper plate, so that fruit stems of young fruits needing to be removed on a pear tree can conveniently enter the groove, the young fruits needing to be removed can be conveniently separated from the young fruits needing to be reserved, and the fruit thinning efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pear tree care devices, in particular to a pear tree fruit thinning device. Background Art

[0002] Fruit thinning is an orchard management measure that involves manually removing excess young fruit. This reduces nutrient consumption and promotes more concentrated nutrients, resulting in high-quality fruit and ensuring sustained high yields. Pear fruit can be thinned when they are about the size of peanuts, ensuring the quality of the fruit. Thinning pear fruit is done manually with scissors or sickles to sever the stems of the fruit to be thinned. This is labor-intensive and reduces the efficiency of thinning.

[0003] Patent document CN208300411U discloses a fruit thinning device for pear trees. During thinning, the gear ring is placed over the young fruit to be removed, and the motor is started. The motor drives the transmission shaft to rotate within the serial hole, which in turn drives the active bevel gear. The active bevel gear, through the driven bevel gear, drives the rotating shaft within the rotating hole. The rotating shaft drives the active column gear, which in turn drives the gear ring to rotate within the containing cavity. The gear ring rotates the blade, which then cuts the stems of the fruit to be thinned. The gear ring is used to separate the young fruit to be removed from the young fruit to be retained. Since the young fruit needs to pass through the gear ring during thinning, when the young fruit to be retained is close to the young fruit to be removed, manual separation of the young fruit to be retained from the young fruit to be removed is required, which affects the efficiency of the fruit thinning.

[0004] Patent document CN208300386U discloses a scissor device for thinning pear fruit. During thinning, the pear fruit to be thinned is placed between the first straight section, the second straight section, and the curved section. The operator grips the handles of the first and second shear halves, causing the cutting edges of the first and second shear halves to move on the rotating shaft against the elastic energy stored in the torsion spring. The cutting edges of the first and second shear halves then sever the stems of the pear fruit to be thinned. During the thinning process, the operator frequently needs to move the cutting edges of the first and second shear halves on the rotating shaft against the elastic energy stored in the torsion spring, which can easily fatigue the operator's hands. Utility Model Content

[0005] The technical problem to be solved by the utility model is a pear tree fruit thinning device which can reduce the labor intensity of workers, facilitates the distinction between young fruits that need to be removed and young fruits that need to be retained, facilitates the shearing of the stems of young fruits that need to be removed, and can improve the fruit thinning efficiency.

[0006] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0007] A pear tree fruit thinning device comprises an upper plate, a rectangular groove is provided on the upper portion of the upper plate, a shift rod is formed on the upper plate parts on the left and right sides of the groove, the upper end of the shift rod is a pointed end, and the upper plates on the left and right sides of the groove are elastically rotatably connected with cutting components, the cutting components comprise a rotating rod, the rotating rod is elastically rotatably connected to the upper plate, a blade is fixed to the upper end of the rotating rod, the blade is located in front of the shift rod on one side, the blades on the left and right sides are staggered front and back, the rotating rod is connected to a driving unit, the driving unit can make the free ends of the blades rotate toward the middle of the upper plate, the motion trajectories of the free ends of the two blades have an intersection when projected from front to back, a support rod is fixed to the lower end of the upper plate, and a handle is fixed to the lower end of the support rod.

[0008] Specifically, a torsion spring is sleeved on the rotating rod, one end of the torsion spring is fixedly connected to the upper plate, and the other end of the torsion spring is fixedly connected to the rotating rod.

[0009] Specifically, a limit rod is fixed on the side of the rotating rod facing the groove, and a positioning rod is fixed on the front end of the upper plate below the rotating rod. After the free end of the blade rotates 90 degrees toward the middle of the upper plate, the positioning rod blocks the limit rod on its side.

[0010] Specifically, the driving unit includes a second pull rope, which is located on the front side of the upper plate, and the left and right ends of the second pull rope are fixedly connected to the left and right rotating rods respectively, and the left and right parts of the second pull rope are respectively wrapped around the left and right rotating rods. Pulling the second pull rope causes the second pull rope to be wound around the rotating rod, and the free end of the blade rotates toward the middle direction of the upper plate. A motor is fixed on the support rod, the lower end of the first pull rope is fixedly connected to the output shaft of the motor, and the upper end of the first pull rope is fixed to the middle position of the second pull rope.

[0011] Specifically, a battery is installed in the handle, and a switch is installed on the outside of the handle. The switch, the battery and the motor are electrically connected.

[0012] Specifically, two left-right symmetrical guide rods are fixed to the front end of the upper plate below the groove, and the middle part of the second pull rope is located between the two guide rods.

[0013] Specifically, the opposite ends of the left and right blades are both processed with cutting edges.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This device provides a groove on the upper part of the upper plate, so that the young fruit stalks that need to be removed from the pear tree can enter the groove, which is convenient for distinguishing the young fruits that need to be removed from the young fruits that need to be retained, and can improve the efficiency of fruit thinning.

[0016] 2. After starting the motor, the first pull rope can be wound around the output shaft of the motor. The first pull rope pulls the second pull rope and causes the second pull rope portion wound around the rotating rod to be wound out of the rotating rod, thereby finally realizing the rotation of the blade. Since the motion trajectories of the free ends of the two blades have an intersection in the forward projection from front to back, the two blades can shear the young fruit stalks that need to be removed in the groove after rotating 90 degrees, thereby reducing the labor intensity of the staff during the fruit thinning process.

[0017] 3. The upper plate parts on the left and right sides of the groove form a lever, and the upper end of the lever is a pointed tip. The lever can be used to separate the young fruits that need to be retained from the young fruits that need to be removed, which can improve the efficiency of fruit thinning.

[0018] 4. By setting two guide rods, the two guide rods can limit the movement of the second pull rope. In the process of the first pull rope pulling the middle part of the second pull rope downward, the left part of the second pull rope can be prevented from moving to the left side of the upper plate and the right part of the second pull rope can be prevented from moving to the right side of the upper plate. That is, in the process of the first pull rope pulling the middle part of the second pull rope downward, the first pull rope and the second pull rope are always located at the front side of the device, preventing the pear tree branches on the left and right sides of the device from hooking the second pull rope, and the device is convenient to move between the pear tree branches. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of the device.

[0020] Figure 2 Schematic diagram of the upper plate.

[0021] The names of the parts in the accompanying drawings are: 1. upper plate, 2. support rod, 3. handle, 4. switch, 5. motor, 6. first pull rope, 7. second pull rope, 8. guide rod, 9. rotating rod, 10. blade, 11. limit rod, 12. positioning rod, 13. groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Example 1: Reference Figure 1 and Figure 2 As shown, a pear tree fruit thinning device includes an upper plate 1, a rectangular groove 13 is opened on the upper part of the upper plate 1, and the upper plate 1 parts on the left and right sides of the groove 13 form a push rod, and the upper end of the push rod is a pointed tip.

[0024] The young fruits to be retained can be separated from the young fruits to be removed by the lever, and the young fruit stalks to be removed from the pear tree can be easily put into the groove 13, thereby improving the efficiency of fruit thinning.

[0025] Cutting assemblies are elastically and rotatably connected to the upper plate 1 on both sides of the groove 13. The cutting assembly includes a rotating rod 9, which is elastically and rotatably connected to the upper plate 1. Specifically, the rotating rod 9 is sleeved with a torsion spring, one end of which is fixedly connected to the upper plate 1, and the other end of which is fixedly connected to the rotating rod 9.

[0026] A blade 10 is fixed to the upper end of the rotating rod 9. The blade 10 is located at the front side of the shift lever on one side, and the blades 10 on the left and right sides are staggered in front and back. The opposite ends of the blades 10 on the left and right sides are all processed with cutting edges.

[0027] The rotating rod 9 is connected to the driving unit, which can rotate the free ends of the blades 10 toward the middle of the upper plate 1. The forward projections of the motion trajectories of the free ends of the two blades 10 from front to back have an intersection. Figure 1 The dotted line in FIG is the motion trajectory of the free end of the blade 10.

[0028] The drive unit includes a second pull cord 7, which is located on the front side of the upper plate 1. The left and right ends of the second pull cord 7 are fixedly connected to the left and right rotating rods 9, respectively. The left and right portions of the second pull cord 7 are respectively wrapped around the left and right rotating rods 9. Pulling the second pull cord 7 causes the free end of the blade 10 to rotate toward the middle of the upper plate 1 as the second pull cord 7 is unwound from the rotating rod 9. A motor 5 is fixed to the support rod 2. The lower end of the first pull cord 6 is fixedly connected to the output shaft of the motor 5, and the upper end of the first pull cord 6 is fixed to the middle position of the second pull cord 7.

[0029] A support rod 2 is fixed to the lower end of the upper plate 1, and a handle 3 is fixed to the lower end of the support rod 2. A battery is installed in the handle 3, and a switch 4 is installed outside the handle 3. The switch 4, the battery and the motor 5 are electrically connected.

[0030] When thinning the fruit, the fruit stems of the young fruit to be removed are located in the groove 13, and then the motor 5 is started by the switch 4. After the motor 5 is started, the first pull rope 6 can be wound around the output shaft of the motor 5. The first pull rope 6 pulls the second pull rope 7 and causes the second pull rope 7 wrapped around the rotating rod 9 to be partially unwound from the rotating rod 9. During the process of the second pull rope 7 wrapped around the rotating rod 9 being partially unwound from the rotating rod 9, the rotating rod 9 and the blade 10 rotate, and the torsion spring accumulates force. Since the forward projection of the motion trajectory of the free ends of the two blades 10 from the front to the rear has an intersection, the two blades 10 can cut the fruit stems of the young fruit to be removed located in the groove 13 after rotating 90 degrees. The use of this device can reduce the labor intensity of the staff during the fruit thinning process.

[0031] A limit rod 11 is fixed to the side of the rotating rod 9 facing the groove 13, and a positioning rod 12 is fixed to the front end of the upper plate 1 below the rotating rod 9. After the free end of the blade 10 rotates 90 degrees toward the middle of the upper plate 1, the positioning rod 12 blocks the limit rod 11 on its side. The positioning rod 12 blocks the limit rod 11 on its side, thereby preventing the rotating rod 9 and the blade 10 from rotating excessively, and effectively protecting the torsion spring.

[0032] Example 2: Based on Example 1, refer to Figure 1 and Figure 2 As shown, two left-right symmetrical guide rods 8 are fixed to the front end of the upper plate 1 below the groove 13 , and the middle part of the second pull rope 7 is located between the two guide rods 8 .

[0033] By setting two guide rods 8, the two guide rods 8 can limit the movement of the second pull rope 7. In the process of the first pull rope 6 pulling the middle part of the second pull rope 7 downward, it can prevent the left part of the second pull rope 7 from moving to the left side of the upper plate 1 and the right part of the second pull rope 7 from moving to the right side of the upper plate 1. That is, in the process of the first pull rope 6 pulling the middle part of the second pull rope 7 downward, the first pull rope 6 and the second pull rope 7 are always located at the front side of the device, preventing the pear tree branches on the left and right sides of the device from hooking the second pull rope 7, and the device is convenient to move between the branches of the pear tree.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pear tree fruit thinning device, comprising an upper plate (1), characterized in that: A rectangular groove (13) is provided on the upper portion of the upper plate (1), and the upper plate (1) on the left and right sides of the groove (13) forms a shifting rod, the upper end of the shifting rod is a pointed tip, and the upper plates (1) on the left and right sides of the groove (13) are elastically rotatably connected with cutting components, and the cutting components include a rotating rod (9), the rotating rod (9) is elastically rotatably connected to the upper plate (1), a blade (10) is fixed on the upper end of the rotating rod (9), and the blade (10) is located in front of the shifting rod on one side. The blades (10) on the left and right sides are staggered in front and back. The rotating rod (9) is connected to a driving unit, and the driving unit can make the free ends of the blades (10) rotate toward the middle of the upper plate (1), and the motion trajectories of the free ends of the two blades (10) have an intersection in the forward projection from front to back. A support rod (2) is fixed on the lower end of the upper plate (1), and a handle (3) is fixed on the lower end of the support rod (2).

2. A pear tree fruit thinning device according to claim 1, characterized in that: A torsion spring is sleeved on the rotating rod (9), one end of the torsion spring is fixedly connected to the upper plate (1), and the other end of the torsion spring is fixedly connected to the rotating rod (9).

3. A pear tree fruit thinning device according to claim 1, characterized in that: A limiting rod (11) is fixed on one side of the rotating rod (9) facing the groove (13), and a positioning rod (12) is fixed on the front end of the upper plate (1) below the rotating rod (9). After the free end of the blade (10) rotates 90 degrees toward the middle of the upper plate (1), the positioning rod (12) blocks the limiting rod (11) on one side thereof.

4. A pear tree fruit thinning device according to claim 1, characterized in that: The driving unit comprises a second pull rope (7), the second pull rope (7) is located on the front side of the upper plate (1), the left and right ends of the second pull rope (7) are fixedly connected to the left and right rotating rods (9), and the left and right parts of the second pull rope (7) are respectively wound around the left and right rotating rods (9). When the second pull rope (7) is pulled out from the rotating rod (9), the free end of the blade (10) rotates toward the middle direction of the upper plate (1). The support rod (2) is fixed with a motor (5), the lower end of the first pull rope (6) is fixedly connected to the output shaft of the motor (5), and the upper end of the first pull rope (6) is fixed to the middle position of the second pull rope (7).

5. A pear tree fruit thinning device according to claim 4, characterized in that: A battery is installed in the handle (3), and a switch (4) is installed outside the handle (3). The switch (4), the battery and the motor (5) are electrically connected.

6. A pear tree fruit thinning device according to claim 4, characterized in that: Two left-right symmetrical guide rods (8) are fixed to the front end of the upper plate (1) below the groove (13), and the middle part of the second pull rope (7) is located between the two guide rods (8).

7. A pear tree fruit thinning device according to claim 1, characterized in that: The opposite ends of the blades (10) on the left and right sides are both processed with cutting edges.

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