Tea leaf trimming equipment with self-adaptive floating mechanism

Abstract

The invention discloses tea leaf trimming equipment with a self-adaptive floating mechanism, which comprises a fixed frame body for being held by hand or being connected with a walking power component; the pruning cutter is used for pruning branches and leaves; a trimming cutter is mounted at the lower end of the floating frame, and the upper end of the floating frame is in sliding connection with the fixed frame body; an expansion unit is installed between the floating frame and the fixed frame body, and the expansion unit drives the floating frame to perform relative displacement relative to the fixed frame body through deformation so as to achieve floating of the trimming cutter; a gas storage unit is mounted on the fixed frame body or the floating frame and provides an expansion power source for the expansion unit; according to the tea leaf trimming equipment with the self-adaptive floating mechanism, the trimming cutter can float up and down relative to the fixed frame body through the floating mechanism on the equipment, so that hard contact between the trimming cutter and thick and strong branches is avoided, and the conditions of blockage or tooth breakage and the like of the trimming cutter during trimming are prevented.

Description

Technical Field

[0001] The invention relates to the technical field of garden pruning equipment, in particular to tea pruning equipment with an adaptive floating mechanism. Background Art

[0002] A tea pruning machine is a tea pruning device that prunes the branches and leaves of tea trees evenly after the tea picking period, so that the tea trees have better growth effects in the next year. In small tea gardens, manual hand-held tea pruning machines are generally used, which are driven by gasoline or electric power to achieve efficient shearing in a small area. In large tea gardens, manual hand-held shearing is particularly bulky and inefficient, and consumes a lot of manual labor, so large mechanical walking pruning equipment is used.

[0003] In the process of pruning the branches and leaves of tea trees by the above-mentioned tea pruning equipment, there are the following shortcomings and deficiencies: Because each tea tree grows at a different rate during its growth period, the diameters of the branches of the tea trees on the same horizontal plane are different. When encountering thicker branches, the shear teeth that slide back and forth laterally will find it difficult to cut all the branches in one go due to the larger branch diameter, resulting in jamming. In extreme cases, the shear teeth may even break, which is not only not conducive to safe production, but also reduces the shearing efficiency of the tea trees. Summary of the invention

[0004] The present invention aims at the deficiencies in the prior art and provides a tea pruning device with an adaptive floating mechanism. The floating mechanism is arranged on the pruning device so that the pruning tool can float relative to a fixed frame, thereby avoiding damage to the tool when shearing thick branches.

[0005] In order to solve the above technical problems, the present invention is solved by the following technical solutions: a tea pruning device with an adaptive floating mechanism, comprising: Fixed frame for holding or connecting with walking power components; Pruning tools for pruning branches and leaves; and A floating frame, a trimming tool is installed at its lower end, and an upper end of the floating frame is slidably connected to the fixed frame to achieve longitudinal floating of the trimming tool relative to the fixed frame; An expansion unit is installed between the floating frame and the fixed frame, and the expansion unit drives the floating frame to move relative to the fixed frame through deformation to achieve floating of the trimming tool; A gas storage unit is installed on the fixed frame or the floating frame, and the gas storage unit provides an expansion power source for the expansion unit.

[0006] In the above solution, preferably, a contact plate cooperating with the expansion unit is provided on the floating frame, and the expansion unit is provided between the contact plate and the floating frame.

[0007] In the above solution, preferably, one side or both sides of the floating frame are provided with a guide rod matched with the fixed frame body, and the expansion unit is sleeved on the guide rod.

[0008] In the above solution, preferably, a driving wheel for driving the trimming tool is provided on the floating frame, and the driving wheel is drivingly connected to the driving motor via a transmission wheel.

[0009] In the above scheme, preferably, the transmission wheel is provided with a transmission shaft, the drive motor is provided with a drive shaft matched with the transmission shaft, and a clutch unit is provided between the drive shaft and the transmission shaft; The clutch unit can be disengaged from the drive motor when the trimming tool encounters an obstacle.

[0010] In the above scheme, preferably, the clutch unit includes a first clutch fixed to the drive shaft as a whole and a second clutch connected to the transmission shaft in a guided sliding manner, and a clutch spring is provided between the second clutch and the transmission shaft; The first clutch and the second clutch are both provided with clutch teeth that cooperate with each other.

[0011] In the above solution, preferably, the floating frame is provided with a control unit cooperating with the second clutch; A solenoid valve is provided between the gas storage unit and the expansion unit, and the control unit is used to control the opening and closing of the solenoid valve.

[0012] In the above scheme, preferably, the driving shaft is provided with a first pump wheel, the floating frame is provided with an air pump for providing gas to the gas storage unit, and the air pump is provided with a second pump wheel drivingly connected to the first pump wheel.

[0013] In the above solution, preferably, the expansion unit is a hollow annular capsule.

[0014] In the above solution, preferably, the guide rod is a non-circular straight rod, and the fixed frame is provided with a non-circular hole body adapted to the shape of the guide rod.

[0015] The beneficial effects of the present invention are as follows: the present invention provides a tea pruning device with an adaptive floating mechanism, through which the pruning tool can float up and down relative to the fixed frame, thereby avoiding hard contact between the pruning tool and the thick branches, and preventing the pruning tool from getting stuck or breaking teeth during pruning; In addition, by providing an expansion unit, the pruning tool can float up quickly, thereby improving the speed and timeliness of the pruning tool's floating up, greatly improving the use efficiency of the pruning equipment and the service life of the pruning tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the driving wheel of the present invention.

[0018] Figure 3 For the present invention Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0019] Figure 4 It is a rear-view stereoscopic structural schematic diagram of the present invention.

[0020] Figure 5 It is a three-dimensional exploded view of the clutch unit of the present invention.

[0021] Figure 6 It is a three-dimensional diagram of the marking unit of the present invention.

[0022] Figure 7 It is a cross-sectional view of the marking unit of the present invention. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Figure 1-Figure 7 . The tea pruning device with an adaptive floating mechanism includes a fixed frame 1, which is used to connect with a handheld component so that the tea pruning device can be used by hand. The fixed frame 1 can also be installed on a walking power component, such as a mechanical walking component such as a crawler chassis. After installation, the tea pruning device can be used for mechanical walking and shearing to improve its shearing efficiency. In this embodiment, the use of the device listed above is not limited.

[0024] When the above-mentioned fixed frame 1 is connected and installed relative to the handheld component or the walking power component, a single-sided fixed frame 1 can be set, and a symmetrical fixed frame can also be set. In this embodiment, a symmetrical fixed frame is set as an example, and the setting position of the fixed frame 1 is as follows: Figure 1 shown.

[0025] The fixed frame body 1 is provided with a floating frame 3 which can be lifted or floated relative to its vertical direction. Specifically, the upper end of the floating frame 3 is provided with a guide rod 302 which cooperates with the fixed frame body 1. The guide rod 302 is a non-circular straight rod. In this embodiment, the guide rod 302 is set as a hexagonal rod as an example. A non-circular hole body adapted to the shape of the guide rod 302 is provided on the fixed frame body 1, that is, a hexagonal hole is provided, so that the upper end of the guide rod 302 is guided to pass through the fixed frame body 1, thereby realizing the vertical guided sliding of the floating frame 3 relative to the fixed frame body 1.

[0026] A reciprocating pruning tool 2 is installed at the lower end of the floating frame 3. The pruning tool 2 is an existing tool and adopts a reciprocating cutting serrated tool. This is a prior art and will not be described in detail here. A contact plate 301 is fixedly installed on the upper end of the guide rod 302 after passing through the fixed frame body 1 upward, and an expansion unit 4 is provided between the contact plate 301 and the fixed frame body 1.

[0027] The expansion unit 4 is a hollow annular capsule, and it is a telescopic capsule. The expansion unit 4 is sleeved on the guide rod 302 below the contact plate 301. The lower end surface of the expansion unit 4 contacts the upper end surface of the fixed frame 1, and the upper end surface of the expansion unit 4 is connected to the contact plate 301 through an elastic member (such as a spring, rubber, etc.); a gas storage unit 5 is installed on the floating frame 3 or the fixed frame 1. The gas storage unit 5 is a small compressed gas tank that stores compressed gas of a certain pressure. The gas storage unit 5 is connected to the expansion unit 4 through a solenoid valve.

[0028] When the solenoid valve is controlled to open, the compressed gas in the gas storage unit 5 is released into the expansion unit 4, causing the expansion unit 4 to inflate and lift the contact plate 301, thereby causing the floating frame 3 to slide upward relative to the fixed frame 1, and causing the pruning tool 4 to float upward synchronously; that is, the expansion unit 4 drives the floating frame 3 to move relative to the fixed frame 1 through deformation to achieve the floating of the pruning tool 2.

[0029] The floating frame 3 is provided with a driving wheel 303 for driving the pruning tool 2. The driving wheel 303 is connected to the driving motor through a transmission wheel 304. The driving wheel 303 and the transmission wheel 304 are connected through a belt transmission. A transmission shaft 305 is fixedly provided on the transmission wheel 304. The transmission shaft 305 is rotatably arranged on the floating frame 3 through a bearing. The driving motor is provided with a driving shaft 306 that matches the transmission shaft 305, so that the power of the driving motor is transmitted to the driving wheel 303 through the driving shaft 306 and the transmission wheel 304, thereby realizing the reciprocating shearing of the pruning tool 2. This is the existing transmission structure of the pruning tool 2 and will not be described in detail here.

[0030] A clutch unit 6 is provided between the drive shaft 306 and the transmission shaft 305. The clutch unit 6 can be disengaged from the transmission between the drive motor when the teeth of the trimming tool 2 encounter resistance. Specifically, the clutch unit 6 includes a first clutch 601 fixed integrally with the drive shaft 306. Figure 3 and Figure 5 As shown, the transmission shaft 305 is provided with a second clutch 602 for guiding sliding. The transmission shaft 305 is provided with a spline section, and the inner hole of the second clutch 602 is a spline hole, so that the second clutch 602 is slidably arranged on the shaft end of the transmission shaft 305 through spline matching.

[0031] The end face of one side of the second clutch 602 cooperates with the end face of the first clutch 601 through a clutch tooth portion 604, and a clutch spring 603 is provided between the end face on the other side and the transmission shaft 305. The disengagement force of the first clutch 601 and the second clutch 602 can be adaptively adjusted or regulated by the elastic force of the clutch spring 603; the first clutch 601 and the second clutch 602 are both provided with clutch tooth portions 604 that cooperate with each other, and the clutch tooth portions 604 are three convex teeth evenly distributed around the circumference, and the end faces on both sides of the convex teeth are provided with transition inclined surfaces, and the angle of the convex part of the convex tooth on the circumference is ≤60°, so that the first clutch 601 and the second clutch 602 are engaged, and the clutch tooth portions 604 can be mutually embedded in the corresponding concave and convex parts, so that the drive shaft 306 drives the transmission shaft 305 to rotate.

[0032] When the pruning tool 2 is pruning, when its pruning teeth encounter thicker branches and leaves that are difficult to cut quickly, the second clutch 602 compresses the clutch spring 603 after receiving the resistance, thereby disengaging the first clutch 601 and the second clutch 602. At this time, the pruning tool 2 stops transmission instantly to prevent the tool from being broken or worn due to excessive resistance.

[0033] The floating frame 3 is provided with a control unit 307 that cooperates with the second clutch 602; the control unit 307 is used to control the opening and closing of the solenoid valve; the control unit 307 is a button switch or a proximity switch, which is arranged outside the end surface of the clutch tooth portion away from the second clutch 602, that is, when the second clutch 602 is moved along the Figure 3 When the compression clutch spring 603 slides rightward in the direction shown, its right end surface contacts the control unit 307 to trigger the switch, thereby opening the solenoid valve and charging the compressed gas in the gas storage unit 5 into the expansion unit 4.

[0034] In order to ensure that the gas in the gas storage unit 5 can be continuously replenished, a first pump wheel 308 is arranged on the drive shaft 306, and the pump wheel is fixedly connected to the drive shaft 306. An air pump 501 for providing gas to the gas storage unit 5 is provided on the floating frame 3. A second pump wheel 309 is provided on the air pump 501, and the second pump wheel 309 is fixedly connected to the input shaft of the air pump 501. The first pump wheel 308 and the second pump wheel 309 are connected by transmission via a synchronous wheel and synchronous belt or a pulley and belt, and the diameter of the first pump wheel 308 is larger than the diameter of the second pump wheel 309, and the diameter ratio is 1:3 or above, so that the wheel speed of the second pump wheel 309 is greatly increased, and the rotation speed of the second pump wheel 309 is input into the air pump through the input shaft of the air pump 501, so that the air pump stores gas for the gas storage unit 5.

[0035] Method for using the tea pruning device with the adaptive floating mechanism as described above: after the driving motor is started, the driving shaft 306 is rotated to provide power to the pruning tool 2 to prune the tea tree, and while the driving shaft 306 rotates, the power is transmitted to the air pump 501 through the first pump wheel 308 to drive the air pump 501 to work to inflate the gas storage unit 5, so that compressed gas is stored in the gas storage unit 5; When the teeth of the pruning tool 2 encounter thicker branches that are difficult to cut, the second clutch 602 compresses the clutch spring 603 and then disengages from the first clutch 601. The second clutch 602 slides and triggers the control unit 307 to open the solenoid valve. At this time, the compressed gas in the gas storage unit 5 is filled into the expansion unit 4, and the expansion unit 4 is inflated to lift the contact plate 301, thereby causing the floating frame 3 to slide and lift upward, that is, the pruning tool 2 floats and lifts upward, so that the pruning tool 2 is separated from the thicker part of the tea tree branch, thereby preventing the tool from being damaged or the teeth from getting stuck and broken.

[0036] When the tea pruning device encounters a thick branch, it floats and stops pruning the part. However, the pruned part needs to be manually inspected or pruned at a fixed point later. Therefore, the present embodiment further provides a marking unit for facilitating manual inspection. The marking unit marks after the floating frame 3 floats once, that is, marks the floating position of the pruning tool 2 encountering resistance.

[0037] The marking unit includes a base plate 701, a material storage box 702 and a sliding plate 703. Figure 6-Figure 7 As shown, the substrate 701 is fixed on the side of the pruning tool 2 away from the pruning teeth, that is, it is set at the end of the pruning tool 2 away from the moving direction of the pruning device; the storage box 702 is fixed above the substrate 701, and the storage box 702 is set in a long strip shape, and its length direction is adapted to the length of the pruning tool 2.

[0038] The sliding plate 703 is slidably arranged at the bottom of the material storage box 702. Preferably, a gap groove for the sliding plate 703 to slide is provided between the bottom of the material storage box 702 and the base plate 701. The sliding plate 703 is provided with a marking groove 705 that matches the material discharge port 704 of the material storage box 702. Initially, the solid part of the sliding plate 703 is located at the material discharge port 704, and the marking groove 705 is as shown in FIG. Figure 6 It is shown as being located outside the substrate 701 .

[0039] A driving spring 706 is provided between the sliding plate 703 and the base plate 701, and a plurality of sliding rods 707 are provided on the sliding plate 703. A guide plate 708 cooperating with the sliding rod 707 is provided on the base plate 701, and the sliding rod 707 is guided and slidably provided on the guide plate 708; preferably, the driving spring 706 is sleeved on the sliding rod 707, and its two ends are respectively pressed against the guide plate 708 and the sliding plate 703.

[0040] One end of the sliding plate 703 slides through the gap groove under the storage box 702, and the other end is connected to the contact plate 301 through a pull rope 709, that is, the contact plate 301 is lifted up and the sliding plate 703 is pulled to slide, so that the marking groove 705 slides to the discharge port 704, so that the material in the storage box 702 fills the marking groove 705. When the contact plate 301 is reset downward, the marking groove 705 is reset to the right by the driving spring 706, and the material in the marking groove 705 falls outside the base plate 701, that is, falls on the tea tree. Preferably, the material in the storage box 702 in this embodiment can be made of powdered colored particles, so as to achieve a marking effect, which is convenient for the operator to observe later.

[0041] The present invention provides a floating mechanism to enable the pruning tool to float relative to the fixed frame after encountering greater resistance, and to break away from the contact with the thick branches to prevent damage to the tool. At the same time, after the separation, the thick branches at that location are marked by a marking unit to facilitate subsequent manual shearing of the branches at that location, so that the tea trees can maintain consistency after pruning, which greatly improves the safety of the tea pruning equipment, improves the pruning efficiency, and extends the service life of the tool.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tea pruning device with an adaptive floating mechanism, characterized in that: include A fixed frame (1) for holding by hand or connecting with a walking power component; A pruning tool (2) for pruning branches and leaves; and A floating frame (3), the lower end of which is equipped with a trimming tool (2), and the upper end of which is slidably connected to the fixed frame (1) to achieve longitudinal floating of the trimming tool (2) relative to the fixed frame (1); An expansion unit (4) is installed between the floating frame (3) and the fixed frame body (1), and the expansion unit (4) drives the floating frame (3) to move relative to the fixed frame body (1) through deformation to achieve floating of the trimming tool (2); A gas storage unit (5) is installed on the fixed frame (1) or the floating frame (3), and the gas storage unit (5) provides an expansion power source for the expansion unit (4).

2. The tea pruning device with an adaptive floating mechanism according to claim 1, characterized in that: The floating frame (3) is provided with a contact plate (301) that matches the expansion unit (4); the expansion unit (4) is arranged between the contact plate (301) and the floating frame (3).

3. The tea pruning device with an adaptive floating mechanism according to any one of claims 1-2, characterized in that: One side or both sides of the floating frame (3) are provided with a guide rod (302) that matches the fixed frame body (1), and the expansion unit (4) is sleeved on the guide rod (302).

4. The tea pruning device with an adaptive floating mechanism according to claim 1, characterized in that: The floating frame (3) is provided with a driving wheel (303) for driving the trimming tool (2), and the driving wheel (303) is connected to the driving motor via a transmission wheel (304).

5. The tea pruning device with an adaptive floating mechanism according to claim 4, characterized in that: The transmission wheel (304) is provided with a transmission shaft (305), the drive motor is provided with a drive shaft (306) matched with the transmission shaft (305), and a clutch unit (6) is provided between the drive shaft (306) and the transmission shaft (305); The clutch unit (6) can disengage the transmission between the clutch unit and the drive motor when the trimming tool (2) encounters an obstacle.

6. The tea pruning device with an adaptive floating mechanism according to claim 5, characterized in that: The clutch unit (6) comprises a first clutch (601) fixed integrally with the drive shaft (306) and a second clutch (602) in a guide sliding connection with the transmission shaft (305), wherein a clutch spring (603) is provided between the second clutch (602) and the transmission shaft (305); The first clutch (601) and the second clutch (602) are both provided with clutch teeth (604) that cooperate with each other.

7. The tea pruning device with an adaptive floating mechanism according to claim 6, characterized in that: The floating frame (3) is provided with a control unit (307) that cooperates with the second clutch (602); A solenoid valve is provided between the gas storage unit (5) and the expansion unit (4), and the control unit (307) is used to control the opening and closing of the solenoid valve.

8. The tea pruning device with an adaptive floating mechanism according to claim 5, characterized in that: The driving shaft (306) is provided with a first pump wheel (308), the floating frame (3) is provided with an air pump (501) for providing gas to the gas storage unit (5), and the air pump (501) is provided with a second pump wheel (309) drivingly connected to the first pump wheel (308).

9. The tea pruning device with an adaptive floating mechanism according to claim 1, characterized in that: The expansion unit (4) is a hollow annular capsule.

10. The tea pruning device with an adaptive floating mechanism according to claim 3, characterized in that: The guide rod (302) is a non-circular straight rod, and the fixed frame (1) is provided with a non-circular hole body that matches the shape of the guide rod (302).

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