Tea tree cutting pruning device
By designing a mechanical structure using conductive strips and metal sliding contacts, the problem of blade position detection failure in the tea tree cutting pruning device was solved, achieving reliable and precise control in the tea garden environment and avoiding mechanical damage to the pruning shears.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-03
- Publication Date
- 2026-03-27
AI Technical Summary
The blade limit position detection of traditional tea tree cutting pruning devices is easily affected by vibration and fails, leading to damage to the pruning shears.
The mechanical structure design employs conductive strips and metal sliding contact plates. Automatic power-off protection is achieved through the physical contact and separation between the slider and the conductive strip, avoiding the risk of vibration failure of traditional electronic sensors and ensuring the accuracy of blade position control.
It significantly improves the reliability of the equipment under complex working conditions in tea gardens, avoids damage to the pruning shears caused by misjudgment of the control system, and has a compact structure and strong practicality.
Smart Images
Figure CN224037963U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to tea tree pruning technical field, concretely relates to a tea tree cutting pruning device. BACKGROUND
[0002] Traditional tea tree cutting pruning device usually adopts motor drive knife edge to realize opening and closing action, and its core control logic depends on the forward and reverse switching of motor. In order to realize the accurate control of the position of the knife edge, the prior art scheme generally installs a magnet on the mechanical structure of the pruning device, and two position limiting sensors are provided in a matched manner. The sensor senses the magnet signal to determine whether the knife edge reaches the preset closed or open limit position, and then feeds back a signal to the control system to cut off the power supply of the motor. However, this technology has significant defects in practical application: since the pruning operation is often in a strong vibration environment in the tea garden, the internal circuit and sensing element of the sensor as a precision electronic component are easily affected by environmental erosion or mechanical impact when exposed to such harsh working conditions for a long time, resulting in a decrease in the sensitivity of the sensor or even complete failure. Once the sensor fails, the control system cannot accurately obtain the real-time position information of the knife edge. At this time, even if the knife edge has moved to the mechanical stroke end point, the motor may still continue to operate, causing the knife edge assembly to bear a torque or extrusion force exceeding the design load, and then causing irreversible mechanical damage such as pruning knife breakage. SUMMARY
[0003] The utility model aims at providing a tea tree cutting pruning device to solve the problem that the traditional tea tree pruning device is prone to failure in detecting the limit position of the knife edge, resulting in damage to the pruning knife.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0005] A tea tree cutting pruning device, comprising a machine body, a first pruning knife and a second pruning knife, the first pruning knife is fixedly installed on one side of the machine body, the second pruning knife is movably installed on one side of the machine body, and the first pruning knife and the second pruning knife can be opened or closed relative to each other;
[0006] A driving member and a sliding member, the sliding member is connected with the second pruning knife and the driving member, and the driving member drives the second pruning knife to rotate through the sliding member;
[0007] A conductive strip and a metal sliding contact, the metal sliding contact is installed on the sliding member, the metal sliding contact abuts against the conductive strip, and the metal sliding contact and the conductive strip can slide relative to each other, the conductive strip is connected with a power supply, and the metal sliding contact is connected with the driving member.
[0008] According to the above technical scheme, when the driving member starts, the output shaft drives the screw to rotate, and then drives the sliding member in threaded connection to move, the sliding block converts the linear motion into the rotary motion of the second pruning knife through the hinged driving rod, so that the second pruning blade forms the opening and closing action around the hinge point with the fixed first pruning blade; in this process, the metal sliding contact piece fixed on the sliding block is always in elastic contact with the conductive strip and forms a conductive loop, when the pruning knife is completely closed, at this time, the metal sliding contact piece slides to the end of the conductive strip, if the driving member has not stopped working, at this time, the metal sliding contact piece slides to the end of the conductive strip and is out of contact, and the power supply is immediately cut off; when the pruning knife is completely opened, the sliding block moves reversely to the limit position of the other end of the conductive strip, if the driving member has not stopped working, then the metal sliding contact piece continues to slide to the other end of the conductive strip and is out of contact, and the metal sliding contact piece is also disconnected from the conductive strip and cut off. This design directly couples the power on-off control and the mechanical stroke limit, retains the automatic power-off protection function, and discards the electronic sensor which is easily affected by vibration in the traditional scheme, when the cutting edge reaches the stroke end point, the physical separation of the metal sliding contact piece and the conductive strip will forcibly interrupt the power supply of the motor, fundamentally eliminating the risk of mechanical damage such as deformation of the blade caused by misjudgment of the control system, and significantly improving the operation reliability of the equipment in the complex working conditions of the tea garden.
[0009] Further, the machine body comprises a first shell and a second shell, and the first shell and the second shell are detachably connected.
[0010] According to the above technical scheme, the machine body is designed as a first shell and a second shell which are detachably connected, so that the equipment can be quickly disassembled for internal cleaning, part replacement or fault maintenance, and the practicality and economy of the pruning device in the dusty environment of the tea garden are improved.
[0011] Further, an installation groove is formed in the first shell, and the conductive strip is fixedly arranged in the installation groove.
[0012] Further, the driving member comprises a motor and a screw, the motor is fixedly arranged in the second shell, the screw is located in the first shell, and the output shaft of the motor is coaxially connected with the screw.
[0013] Further, the sliding member is a sliding block, a limiting cavity is arranged in the first shell, the sliding block is slidingly arranged in the limiting cavity, and the sliding block is in threaded connection with the screw.
[0014] According to the above technical scheme, when the motor starts, the output shaft drives the coaxially connected screw rod to rotate, and since the sliding block is connected with the screw rod in a threaded pair and is axially constrained by the limiting cavity to prevent the sliding block from rotating, the rotating motion of the screw rod is forcibly converted into the linear motion of the sliding block. During the reciprocating motion of the sliding block, the second trimming knife is driven to rotate through the hinged driving rod, so that the second trimming blade realizes opening and closing with the hinged point as the center; cooperating with the travel switch composed of the conductive strip and the metal sliding contact piece, when the sliding block moves to the limit position of the two ends of the conductive strip, the physical power-off mechanism immediately cuts off the power supply of the motor, which not only avoids the risk of vibration failure of the traditional electronic sensor, but also realizes precise closed-loop control of the knife edge position through pure mechanical feedback, and significantly improves the working reliability of the equipment in the strong vibration and high dust environment of the tea garden.
[0015] Further, the first trimming knife includes a first trimming blade and a first arm rod, the first arm rod is fixedly connected with the first trimming blade, and the first arm rod is fixedly installed on the first shell.
[0016] The second trimming knife includes a second trimming blade and a second arm rod, and the second trimming blade is fixedly connected with the second arm rod.
[0017] Further, the sliding block is hinged with a driving rod, and the driving rod is hinged with the end of the second arm rod.
[0018] Further, the conductive strip has a first end and a second end, when the metal sliding contact piece is in contact with the first end of the conductive strip, the first trimming knife and the second trimming knife are in an open state; when the metal sliding contact piece is in contact with the second end of the conductive strip, the first trimming knife and the second trimming knife are in a closed state.
[0019] According to the above technical scheme, when the sliding block moves linearly along the limiting cavity, the driving rod hinged thereon converts the linear displacement into a rotary torque, which pushes the second arm rod to rotate around the hinge point through the end hinged structure, and then drives the second trimming blade to realize the opening and closing action. In this process, the metal sliding contact piece fixed on the sliding block is always in contact with the conductive strip to form a conductive loop. When the trimming knife is fully opened, the sliding block moves to the limit position of the first end of the conductive strip, and the metal sliding contact piece is immediately disconnected to cut off the power supply; when the trimming knife is fully closed, the sliding block moves reversely to the limit position of the second end of the conductive strip, and is also disconnected due to the disconnection of the metal sliding contact piece. This design realizes motion conversion through a pure mechanical transmission chain, which not only ensures the precise control of the trimming action, but also uses the physical limiting of the two ends of the conductive strip to build a double power-off protection mechanism, completely abandoning the traditional electronic sensor, and significantly improving the working reliability of the equipment in the strong vibration and high dust environment of the tea garden.
[0020] Further, a bolt is arranged between the first arm rod and the first shell.
[0021] Further, the power supply is detachably mounted on a side of the second housing away from the first housing, and the power supply is electrically connected with the conductive strip.
[0022] According to the above technical solution, the power supply is in the form of detachable connection, so that the battery can be quickly replaced or charged and maintained in the tea garden operation.
[0023] The utility model discloses the beneficial effect:
[0024] The utility model discloses the driving part starts and drives the motion of sliding part, and the slider passes through the articulated drive rod and converts linear motion into the rotary motion of second pruning scissors, and makes the second cutter blade around articulated point with fixed first cutter blade form the opening and closing action, in this process, the metal slide contact piece fixed on the slider always keeps the elastic contact with the conductive strip and forms the conductive loop, when the scissors are completely closed, metal slide contact piece slides to the end of the conductive strip at this moment, if the driving part has not stopped working, metal slide contact piece slides to the other end of the conductive strip and separates contact immediately, and the power supply is cut off, when the scissors are completely opened, the slider reverses to the limit position of the other end of the conductive strip, if the driving part has not stopped working, then metal slide contact piece continues to slide to the other end of the conductive strip and separates contact, and the same is powered off because metal slide contact piece separates the conductive strip. This design directly couples the power on-off control and mechanical stroke limit, retains the automatic power-off protection function, and discards the electronic sensor vulnerable to vibration in the traditional scheme, when reaching the stroke end point, the physical separation of metal slide contact piece and the conductive strip will force the motor power supply to be interrupted, fundamentally eliminates the mechanical damage risk such as blade deformation caused by the misjudgment of the control system, significantly improves the operation reliability of the equipment under the complex working condition of the tea garden, and the structure is compact and practical.
[0025] Other advantages, objects, and features of the present application will be apparent to those skilled in the art from the following specification, which is to be taken in conjunction with the accompanying drawings, and upon examination of the working examples. The objects and other advantages of the present application can be achieved and obtained even without gaining an appreciation of the above-mentioned features of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 It is a whole structure schematic view of the tea tree cutting pruning device of the utility model;
[0027] Figure 2 It is a split structure schematic view of the tea tree cutting pruning device of the utility model;
[0028] Figure 3 It is a sectional view schematic view of the tea tree cutting pruning device of the utility model;
[0029] Figure 4It is partial sectional view schematic diagram of first shell in tea tree cutting device of the utility model;
[0030] Figure 5 It is partial structure schematic diagram when closing in tea tree cutting device of the utility model;
[0031] Figure 6 It is A part structure schematic diagram in tea tree cutting device of the utility model Figure 5 ;
[0032] Figure 7 It is partial structure schematic diagram when opening in tea tree cutting device of the utility model;
[0033] Figure 8 It is B part structure schematic diagram in tea tree cutting device of the utility model Figure 7 ;
[0034] Figure 9 It is C part structure schematic diagram in tea tree cutting device of the utility model Figure 3 .
[0035] Among them, machine body 1, first shell 11, installation groove 111, second shell 12, first pruning knife 2, first pruning blade 21, first arm rod 22, second pruning knife 3, second pruning blade 31, second arm rod 32, driving rod 33, driving part 4, motor 41, screw 42, sliding part 5, conductive strip 6, metal sliding contact 7, power supply 8. DETAILED DESCRIPTION
[0036] Other advantages and effects of the present application can be easily understood by those skilled in the art from the contents disclosed in the present specification. The present application can also be implemented or applied by other different specific embodiments, and each detail in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for illustrating the present application, and are not intended to limit the protection scope of the present application.
[0037] It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner, and only show the components related to the present application in the drawings, not the number, shape and size of the components when actually implemented. The shape, number and proportion of each component in actual implementation can be arbitrarily changed, and the component layout pattern can also be more complex.
[0038] The present embodiment provides a tea tree cutting device, as shown in Figures 1 to 9As shown, including the body 1, the first trimming knife 2 and the second trimming knife 3, the first trimming knife 2 is fixedly installed on the left side of the body 1, and the second trimming knife 3 is movably installed on the left side of the body 1, and the first trimming knife 2 and the second trimming knife 3 can be opened or closed with each other;
[0039] The driving member 4 and the sliding member 5, the sliding member 5 is connected with the second trimming knife 3 and the driving member 4, the driving member 4 drives the second trimming knife 3 to rotate through the sliding member 5; The conductive strip 6 and the metal sliding contact 7, the metal sliding contact 7 is installed on the sliding member 5, the metal sliding contact 7 is in abutment with the conductive strip 6, and the metal sliding contact 7 and the conductive strip 6 can slide relative to each other, the conductive strip 6 is connected with the power supply 8, and the metal sliding contact 7 is connected with the driving member 4.
[0040] In the embodiment, when the driving member 4 drives the sliding member 5 to slide, the sliding member 5 drives the rotational movement of the second trimming knife 3, so that the second trimming knife 3 rotates around the hinge point of the second trimming knife 3, and forms the opening and closing action with the fixed first trimming knife 2; In this process, the metal sliding contact 7 fixed on the sliding block always keeps in contact with the conductive strip 6 and forms a conductive loop, when the first trimming knife 2 and the second trimming knife 3 are completely closed, at this time, the metal sliding contact 7 slides to the end limit of the conductive strip 6, if the driving member 4 has not stopped working, at this time, the metal sliding contact 7 slides to the end limit position of the conductive strip 6, the conductive strip 6 and the metal sliding contact 7 are separated from each other, and the power supply 8 is immediately cut off; When the scissors are completely opened, the sliding block moves reversely to the other end of the conductive strip 6, if the driving member 4 has not stopped working, then the metal sliding contact 7 continues to slide to the limit position of the conductive strip 6, and is also disconnected due to the separation of the metal sliding contact 7 from the conductive strip 6; This design directly couples the power supply 8 on-off control and the mechanical stroke limit, which not only retains the automatic power-off protection function, but also discards the electronic sensor which is easily affected by vibration in the traditional scheme, when the cutting edge reaches the stroke end point, the physical separation of the metal sliding contact 7 and the conductive strip 6 will forcibly interrupt the power supply of the motor 41, which fundamentally eliminates the mechanical damage risk of the trimming knife blade deformation caused by the misjudgment of the sensor control system, and significantly improves the operation reliability of the equipment in the complex working conditions of the tea garden.
[0041] As a preferred embodiment, as shown in Figure 1 and Figure 2 As shown, the body 1 includes a first shell 11 and a second shell 12, the first shell 11 and the second shell 12 are detachably connected, specifically, the first shell 11 and the second shell 12 can be connected by thread engagement, or the first shell 11 and the second shell 12 can be connected by bolts. The body 1 is designed as the first shell 11 and the second shell 12 which are detachably connected, which is convenient for quickly disassembling the device for internal cleaning, part replacement or fault maintenance, and improves the practicability and economy of the trimming device in the tea garden environment.
[0042] As a preferred embodiment, as shown in Figure 4 The first shell 11 is provided with a mounting groove 111, and the conductive strip 6 is fixedly arranged in the mounting groove 111. As shown in Figure 2 and Figure 3 The driving member 4 comprises a motor 41 and a screw rod 42. The motor 41 is a reversible motor, and the number of rotations of the motor 41 in the forward direction or the reverse direction can be preset. A switch is arranged on the machine body 1 and can be used to control the forward rotation or the reverse rotation of the motor 41. The motor 41 is fixedly arranged in the second shell 12, and the screw rod 42 is located in the first shell 11. The output shaft of the motor 41 is coaxially connected with the screw rod 42. In this embodiment, the sliding member 5 is a sliding block. A limiting cavity is arranged in the first shell 11, and the sliding block is slidingly arranged in the limiting cavity. The purpose of the limiting cavity is to limit the rotation of the sliding block. The sliding block is threadedly connected with the screw rod 42.
[0043] In this embodiment, when the motor 41 is started, the output shaft drives the coaxially connected screw rod 42 to rotate. Since the sliding block is threadedly connected with the screw rod 42 and is axially constrained by the limiting cavity to prevent the rotation of the sliding block, the rotation of the screw rod 42 drives the sliding block to move linearly. During the reciprocating movement of the sliding block, the second trimming knife 3 is driven to rotate by the hinged driving rod 33, so that the second trimming knife 3 is opened and closed with the hinge point as the center.
[0044] As a preferred embodiment, the first trimming knife 2 comprises a first trimming blade 21 and a first arm rod 22. The first arm rod 22 is fixedly connected with the first trimming blade 21 and is arranged on the first shell 11. Specifically, a bolt is arranged between the first arm rod 22 and the first shell 11, and the first arm rod 22 is arranged on the first shell 11 by the bolt. The second trimming knife 3 comprises a second trimming blade 31 and a second arm rod 32. The second trimming blade 31 is fixedly connected with the second arm rod 32.
[0045] As a preferred embodiment, the sliding block is hinged with a driving rod 33, and the driving rod 33 is hinged with the end of the second arm rod 32. The sliding block drives the driving rod 33 to move, and the driving rod 33 drives the second arm rod 32 to rotate around the hinge point, thereby driving the first trimming knife 2 and the second trimming knife 3 to open and close.
[0046] As a preferred embodiment, as shown in Figure 6 and Figure 8 The conductive strip 6 has a first end and a second end. In this embodiment, the left end of the conductive strip 6 is the first end, and the right end of the conductive strip 6 is the second end. When the metal sliding contact 7 is in contact with the first end of the conductive strip 6 (corresponding to Figure 7 ), the first trimming knife 2 and the second trimming knife 3 are in the open state. When the metal sliding contact 7 is in contact with the second end of the conductive strip 6 (corresponding to Figure 5), the first trimming knife 2 and the second trimming knife 3 are in the closed state. In the embodiment, the metal sliding contact 7 fixed on the slider is always in contact with the conductive strip 6 to form a conductive loop. When the first trimming knife 2 and the second trimming knife 3 are fully opened, the slider moves to the first end limit position of the conductive strip 6, and the metal sliding contact 7 is immediately disconnected from the power supply 8. When the first trimming knife 2 and the second trimming knife 3 are fully closed, the slider moves reversely to the second end limit position of the conductive strip 6, and the power supply 8 is also disconnected due to the disconnection of the metal sliding contact 7. The design realizes the motion conversion through a pure mechanical structure, discards the instability and failure of the traditional electronic sensor, and significantly improves the working reliability of the device in the tea garden trimming and cutting environment.
[0047] As a preferred embodiment, the power supply 8 is detachably installed on the side of the second shell 12 away from the first shell 11 (i.e. the right side of the second shell 12 in the embodiment) in the form of clamping, and the power supply 8 is electrically connected with the conductive strip 6. Figure 1 In the embodiment, the power supply 8 is in the form of detachable connection, which is convenient for quick replacement of the battery or charging maintenance in the tea garden operation, has compact structure, and has strong practicability.
[0048] The above embodiment is only a preferred embodiment for fully illustrating the present application, and the protection scope of the present application is not limited thereto. The equivalent replacement or transformation of the present application by the person skilled in the art on the basis of the present application is within the protection scope of the present application.
Claims
1. A tea tree cutting pruning device, characterised in that, Include: Machine body (1), first pruning knife (2) and second pruning knife (3), the first pruning knife (2) is fixedly installed on one side of the machine body (1), the second pruning knife (3) is movably installed on one side of the machine body (1), the first pruning knife (2) and the second pruning knife (3) can be opened or closed with each other; Driving member (4) and sliding member (5), the sliding member (5) is connected with the second pruning knife (3) and the driving member (4), the driving member (4) drives the second pruning knife (3) to rotate through the sliding member (5); Conductive strip (6) and metal sliding contact (7), the metal sliding contact (7) is installed on the sliding member (5), the metal sliding contact (7) is in abutment with the conductive strip (6), and the metal sliding contact (7) and the conductive strip (6) can slide relative to each other, the conductive strip (6) is connected with a power supply (8), the metal sliding contact (7) is connected with the driving member (4).
2. A tea plant cutting pruning device according to claim 1, characterised in that: The machine body (1) comprises a first housing (11) and a second housing (12), the first housing (11) and the second housing (12) are detachably connected.
3. A tea plant cutting pruning device according to claim 2, characterised in that: The first housing (11) is provided with a mounting groove (111), and the conductive strip (6) is fixedly arranged in the mounting groove (111).
4. A tea plant cutting pruning device according to claim 3, characterised in that: The driving member (4) comprises a motor (41) and a screw rod (42), the motor (41) is fixedly arranged in the second housing (12), the screw rod (42) is located in the first housing (11), and the output shaft of the motor (41) is coaxially connected with the screw rod (42).
5. A tea plant cutting pruning device according to claim 4, characterised in that: The sliding member (5) is a sliding block, the first housing (11) is provided with a limiting cavity, the sliding block is slidably arranged in the limiting cavity, and the sliding block is threadedly connected with the screw rod (42).
6. A tea plant cutting pruning device according to claim 5, characterised in that: The first pruning knife (2) comprises a first blade (21) and a first arm rod (22), the first arm rod (22) is fixedly connected with the first blade (21), and the first arm rod (22) is fixedly installed on the first housing (11). The second pruning knife (3) comprises a second blade (31) and a second arm rod (32), the second blade (31) is fixedly connected with the second arm rod (32).
7. A tea plant cutting pruning device according to claim 6, characterised in that: The sliding block is hingedly connected with a driving rod (33), and the end of the second arm rod (32) is hingedly connected with the driving rod (33).
8. A tea plant cutting pruning device according to claim 7, characterised in that: The conductive strip (6) has a first end and a second end, when the metal sliding contact (7) is in contact with the first end of the conductive strip (6), the first pruning knife (2) and the second pruning knife (3) are in an open state, and when the metal sliding contact (7) is in contact with the second end of the conductive strip (6), the first pruning knife (2) and the second pruning knife (3) are in a closed state.
9. A tea plant cutting pruning device according to claim 7, characterised in that: The first arm rod (22) and the first housing (11) are provided with a bolt.
10. A tea plant cutting pruning apparatus according to any one of claims 2 to 9, characterised in that: The power supply (8) is detachably installed on the side, away from the first housing (11), of the second housing (12), and the power supply (8) is electrically connected with the conductive strip (6).