Transmission structure and lopper

Abstract

The transmission structure comprises a bearing part, a rolling wheel assembly and a detection mechanism, the rolling wheel assembly comprises a driving part, a rolling wheel and a traction body, the rolling wheel is rotationally connected to the bearing part, the driving part is connected to the bearing part and the rolling wheel and used for driving the rolling wheel to rotate, one end of the traction body is wound on the rolling wheel, and the other end of the traction body is connected with the detection mechanism. The other end of the traction body is used for being connected with an external high branch scissor body, the detection mechanism is connected to the bearing part and used for detecting whether the traction body is tensioned or not, and when the traction body is tensioned, the detection mechanism controls the driving part to drive the rolling wheel to rotate around the first axis by a preset angle; thus, the rolling wheel is driven by the driving part to rotate so that the rolling wheel can wind the traction body in the loose state, and when the detection mechanism detects that the traction body is tensioned, the detection mechanism controls the driving part to drive the rolling wheel to rotate by a preset angle so that the traction body can pull the knife edge of the high-branch scissors body to be completely closed, and therefore the high-branch scissors body can conduct thorough shearing operation conveniently; therefore, the operation effect of the high branch scissors is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of high branch shears, and particularly relates to a transmission structure and high branch shears. BACKGROUND

[0002] The high branch shears are used for pruning and picking fruit trees to realize growth management of the fruit trees. In the high branch shears, a rod body, a high branch shear body and a transmission structure are usually included. The high branch shear body is arranged at a head end of the rod body, and the transmission structure is arranged at a tail end of the rod body. An operator holds the tail end of the rod body and controls the transmission structure to pull a traction rope, so as to drive the high branch shears to perform shearing work.

[0003] However, due to assembly errors, the traction rope for controlling the opening and closing of the blade of the high branch shear body may be in a slack state after assembly. Or after the high branch shears are used for a period of time, the traction rope is easily slackened after being stretched for many times. When the traction rope is slackened, the transmission mechanism cannot control the blade of the high branch shear body to be completely closed, which leads to shearing failure of the high branch shears, thereby affecting the work effect of the high branch shears. CONTENT OF THE INVENTION

[0004] The present disclosure provides a transmission structure and high branch shears to at least solve the above problems in the prior art.

[0005] To achieve the above object, the present disclosure provides the following technical solution: a transmission structure, comprising:

[0006] a bearing member;

[0007] a winding wheel assembly, comprising a driving member, a winding wheel and a traction body. The winding wheel is rotationally connected to the bearing member. The driving member is connected to the bearing member and the winding wheel and is used to drive the winding wheel to rotate. One end of the traction body is wound around the winding wheel, and the other end of the traction body is used to connect an external high branch shear body;

[0008] a detection mechanism, which is arranged adjacent to the winding wheel and is connected to the bearing member. The detection mechanism is used to detect whether the traction body is tensioned; wherein,

[0009] when the traction body is tensioned, the detection mechanism controls the driving member to drive the winding wheel to rotate around a first axis by a predetermined angle, so that the traction body drives the external high branch shear body to perform work. The first axis extends in a first direction.

[0010] In an implementable manner, the detection mechanism comprises:

[0011] The trigger assembly is arranged between the winding wheel and the high-branch shears body outside the winding wheel in the second direction, and is rotationally connected to the bearing and can rotate around a second axis parallel to the first axis. One end of the traction body is wound around the winding wheel after passing through the trigger assembly.

[0012] The detection assembly includes a trigger switch and a detection member. The trigger switch is arranged adjacent to the trigger assembly and is electrically connected to the detection member. The detection member is used to control the rotation of the winding wheel by a predetermined angle. In this way,

[0013] When the traction body is tensioned, the traction body abuts against the trigger assembly and drives the trigger assembly to rotate around the second axis, so that the trigger assembly presses the trigger switch.

[0014] In an embodiment, the trigger assembly includes:

[0015] The rotating member is arranged between the winding wheel and the high-branch shears body outside the winding wheel in the second direction, and is rotationally connected to the bearing and can rotate around the second axis. One end of the traction body is wound around the winding wheel after passing through the rotating member.

[0016] The pushing member is connected to one side of the rotating member in the first direction and is used to press the trigger switch.

[0017] The elastic member has one end connected to the rotating member and the other end connected to the bearing. The elastic force released by the elastic member is used to drive the rotating member to reset. In this way,

[0018] The contact end between the traction body and the rotating member is arranged in a third direction different from the winding end of the traction body and the winding wheel, and the first direction, the second direction and the third direction are arranged in sequence.

[0019] In an embodiment, the detection mechanism further includes a guide member. The guide member and the trigger assembly are arranged in a second direction perpendicular to the first direction and between the trigger assembly and the high-branch shears body outside the trigger assembly. The guide member is rotationally connected to the bearing.

[0020] One end of the traction body passes through the guide member and the trigger assembly in sequence and is wound around the outer periphery of the winding wheel. The guide member is used to adjust the angle of the traction body entering the trigger assembly.

[0021] In an embodiment, the guide member includes two guide wheels. The two guide wheels are oppositely arranged in a third direction perpendicular to the second direction. Both ends of each guide wheel in the first direction are rotationally connected to the bearing.

[0022] A guide slot is formed between the two guide wheels and the carrier, one end of the traction body passes through the guide slot and is wound around the trigger assembly and the winding wheel, and the position of the guide slot is offset from the contact end between the traction body and the trigger assembly along the third direction.

[0023] In an embodiment, the rotating member comprises:

[0024] A rotating wheel is arranged between the winding wheel and the external high-branch pruning shears body along a second direction, the rotating wheel is rotationally connected to the carrier and can rotate around the second axis, and one end of the traction body passes around the rotating wheel and is wound around the winding wheel;

[0025] An extension arm is connected to the rotating wheel at one end, one end of the elastic member is connected to the extension arm, and the other end of the elastic member is connected to the carrier, and the elastic force released by the elastic member is used to drive the extension arm to drive the rotating wheel to reset.

[0026] In an embodiment, the carrier comprises:

[0027] A carrier body, the rotating wheel and the winding wheel are both rotationally connected to the carrier body, and the driving member is fixedly connected to the carrier body;

[0028] A first stop body is connected to the carrier body and is adjacent to the trigger switch, one end of the actuating member is connected to the rotating wheel, and the other end of the actuating member is arranged between the first stop body and the trigger switch; wherein,

[0029] The elastic force released by the elastic member is used to drive the extension arm to drive the rotating member and the actuating member to rotate until the actuating member abuts against the first stop body, so that the rotating member resets.

[0030] In an embodiment,

[0031] The carrier further comprises a second stop body, the second stop body is adjacent to one side of the extension arm away from the traction body and is connected to the carrier; wherein,

[0032] When the actuating member presses the trigger switch, the second stop body abuts against the extension arm.

[0033] In an embodiment, the other end of the extension arm is configured with an arc surface, one end of the traction body passes through the arc surface and is wound around the outer periphery of the winding wheel, and the arc surface is used to adjust the angle of the traction body entering the winding wheel.

[0034] The disclosure also provides a high branch pruner comprising:

[0035] The transmission structure described above;

[0036] A rod body, one end of the rod body being connected with the transmission structure;

[0037] A high branch pruner blade body connected to the other end of the rod body, the transmission structure being used to drive the high branch pruner blade body to perform shearing work.

[0038] When the transmission structure described above is in operation, the driving member is used to drive the winding wheel to rotate first, so that the winding wheel winds the traction body in a relaxed state. When the traction body is detected to be in tension by the detection mechanism, the detection mechanism controls the driving member to drive the winding wheel to rotate by a predetermined angle, so that the traction body pulls the blade edge of the high branch pruner blade body to be completely closed, so as to facilitate the high branch pruner blade body to perform thorough shearing work, thereby improving the operation effect of the high branch pruner.

[0039] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the disclosure, nor is it used to limit the scope of the disclosure. Other features of the disclosure will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0040] The above and other objects, features and advantages of the exemplary embodiments of the disclosure will be readily understood through reading the following detailed description of the exemplary embodiments of the present disclosure with reference to the accompanying drawings. In the drawings, several embodiments of the disclosure are shown by way of example and not limitation, in which:

[0041] In the drawings, the same or corresponding reference numerals denote the same or corresponding parts.

[0042] Figure 1 A structural schematic diagram of the transmission structure in the embodiment of the disclosure is shown;

[0043] Figure 2 An enlarged view of part II in Figure 1

[0044] Figure 3 A structural schematic diagram of the winding wheel assembly and the detection mechanism in Figure 1

[0045] Explanation of reference numerals in the drawings:

[0046] ​​In the figure: 10, transmission structure; 11, bearing; 111, bearing body; 112, first stop body; 113, second stop body; 12, winding wheel assembly; 121, driving piece; 122, winding wheel; 123, traction body; 124, driving switch; 13, detection mechanism; 131, trigger assembly; 1311, rotating piece; 1311a, rotating wheel; 1311b, extension arm; 1312, pushing piece; 1313, elastic piece; 132, detection assembly; 1321, trigger switch; 1322, detection piece; 133, guide piece; 1331, guide wheel. DETAILED DESCRIPTION

[0047] In order to make the purpose, features and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present disclosure.

[0048] It should be understood that the steps shown above can be reordered, added or deleted. For example, the steps described in the present disclosure can be executed in parallel, in sequence or in different order, as long as the desired results of the technical solutions of the present disclosure can be achieved, which is not limited herein.

[0049] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0050] The embodiments of the present utility model are described below in conjunction with the drawings.

[0051] For the convenience of description, a three-dimensional rectangular coordinate system is added in Figure 2 The direction in which the Z axis is located is the first direction, i.e. the extension direction of the first axis, the direction in which the X axis is located is the second direction, i.e. the setting direction of the trigger assembly 131 and the winding wheel 122, and the direction in which the Y axis is located is the third direction, i.e. the setting direction of the two guide wheels 1331, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0052] Please refer to Figure 1 and Figure 2The transmission structure 10 provided by the embodiments of the present disclosure comprises a bearing 11, a winding wheel assembly 12 and a detection mechanism 13. The winding wheel assembly 12 comprises a driving member 121, a winding wheel 122 and a traction body 123. The winding wheel 122 is rotationally connected to the bearing 11. The driving member 121 is connected to the bearing 11 and the winding wheel 122 and is used to drive the winding wheel 122 to rotate. One end of the traction body 123 is wound around the winding wheel 122. The other end of the traction body 123 is used to connect to an external long-branch shears body. The detection mechanism 13 is arranged adjacent to the winding wheel 122 and is connected to the bearing 11. The detection mechanism 13 is used to detect whether the traction body 123 is in tension. When the traction body 123 is in tension, the detection mechanism 13 controls the driving member 121 to drive the winding wheel 122 to rotate around a first axis by a predetermined angle, so that the traction body 123 drives the external long-branch shears body to perform work. The first axis is arranged on the bearing 11 and extends in a first direction. Exemplarily, the traction body 123 can be a traction rope or a traction belt. The driving member 121 can be a motor.

[0053] When the transmission structure 10 works, the winding wheel 122 is first driven to rotate by the driving member 121, so that the traction body 123 in a slack state is wound around the winding wheel 122. When the detection mechanism 13 detects that the traction body 123 is in tension, the detection mechanism 13 controls the driving member 121 to drive the winding wheel 122 to rotate by a predetermined angle, so that the traction body 123 pulls the blade of the long-branch shears body to completely close, so as to facilitate the long-branch shears body to perform complete shearing work, thereby improving the work effect of the long-branch shears.

[0054] It can be understood that the length of the traction body 123 in the long-branch shears can be designed to be extended, so that the traction body 123 of the assembled long-branch shears is in a slack state. The traction body 123 has a larger error allowance during assembly, which reduces the assembly difficulty, improves the assembly efficiency, and avoids the traction body 123 of the long-branch shears being in a tension state when not in use, which causes the traction body 123 to stretch for a long time and thus reduces the service life of the traction body 123.

[0055] Please refer to Figure 2In some embodiments, the detection mechanism 13 comprises a trigger assembly 131 and a detection assembly 132. The trigger assembly 131 is arranged at a position spaced apart from the reel 122 along the second direction and between the reel 122 and the outer high-branch shears body. The trigger assembly 131 is rotationally connected to the carrier 11 and rotatable about a second axis parallel to the first axis. The second axis is arranged on the carrier 11. One end of the traction body 123 is wound around the trigger assembly 131 and then wound around the reel 122. The detection assembly 132 comprises a trigger switch 1321 and a detection member 1322. The trigger switch 1321 is arranged adjacent to the trigger assembly 131 and electrically connected to the detection member 1322. The detection member 1322 is configured to control the reel 122 to rotate by a predetermined angle. When the traction body 123 is tensioned, the traction body 123 abuts against the trigger assembly 131 and drives the trigger assembly 131 to rotate about the second axis, so that the trigger assembly 131 presses the trigger switch 1321.

[0056] In this way, when the traction body 123 is relaxed, no friction force is generated between the traction body 123 and the trigger assembly 131, and the traction body 123 cannot drive the trigger assembly 131 to rotate, or the generated friction force is insufficient to drive the trigger assembly 131 to rotate. When the traction body 123 is tensioned, the traction body 123 abuts against the trigger assembly 131 and generates a friction force therebetween. The generated friction force drives the trigger assembly 131 to rotate about the second axis, so that the trigger assembly 131 presses the trigger switch 1321. The trigger switch 1321 transmits a trigger signal to the detection member 1322. After receiving the trigger signal, the detection member 1322 drives the reel 122 to rotate by a predetermined angle to wind the traction body 123 by a predetermined length. By starting to calculate the rotation angle of the reel 122 when the traction body 123 is tensioned through the trigger switch 1321, the corresponding speed block, the accuracy of driving the high-branch shears body to close the blade edge through the traction body 123 is higher, thereby further improving the operation effect of the high-branch shears.

[0057] The structure of the detection member 1322 is not limited in the present application. For example, the detection member 1322 can be a Hall sensor and a circuit board. Correspondingly, the Hall sensor is electrically connected to the circuit board. The circuit board is electrically connected to the driving member 121. When the Hall sensor is triggered, a trigger signal is transmitted to the circuit board. The circuit board controls the driving member 121 to rotate by a predetermined angle. In the present application, the predetermined angle is the angle by which the reel 122 needs to rotate when the traction body 123 pulls the high-branch shears body to completely close. Alternatively, the detection member 1322 can also be an angle encoder and a circuit board, or a rotary transformer and a circuit board.

[0058] Please refer to Figure 2Further, the trigger assembly 131 comprises a rotating member 1311, a pushing member 1312 and an elastic member 1313. The rotating member 1311 is arranged along the second direction and is arranged between the reel 122 and the outer high-branch pruning shears body. The rotating member 1311 is rotationally connected to the carrier 11 and can rotate around the second axis. One end of the traction body 123 is wound around the reel 122 after passing through the rotating member 1311. The pushing member 1312 is connected to one side of the rotating member 1311 in the first direction and is used to press the trigger switch 1321. One end of the elastic member 1313 is connected to the rotating member 1311, and the other end of the elastic member 1313 is connected to the carrier 11. The elastic force released by the elastic member 1313 is used to drive the rotating member 1311 to reset. The contact end between the traction body 123 and the rotating member 1311 and the winding end of the traction body 123 and the reel 122 are arranged along the third direction and are arranged along the third direction.

[0059] In this way, by arranging the contact end between the traction body 123 and the rotating member 1311 and the winding end of the traction body 123 and the reel 122 along the third direction, the end of the traction body 123 is bent at a reasonable angle, and the end of the traction body 123 is prevented from being twisted. The traction body 123 enters the reel 122 at a reasonable angle, thereby preventing the traction body 123 from being deformed when the reel 122 winds the traction body 123, thereby prolonging the service life of the traction body 123.

[0060] It can be understood that the inflection point formed by the contact end between the traction body 123 and the rotating member 1311 plays a supporting role for the traction body 123 and can limit the generation of the offset or twisting phenomenon caused by the automatic movement of the traction body 123. In a straight state, the stress of the traction body 123 is mainly distributed tensile stress along the axis direction. When the inflection point appears, bending stress is generated, which causes different stress components on the inside and outside of the inflection point. These stress components can produce reasonable resistance to external deformation under appropriate combination, so that the traction body 123 can be prevented from being deformed. Secondly, when the traction body 123 is bent to form an inflection point, it is equivalent to elastic deformation, thereby storing a certain amount of elastic potential energy. When the external force causes the line to be further deformed, the stored elastic potential energy is converted into energy to resist the external force, thereby preventing the traction body 123 from being deformed when it is bent.

[0061] At the same time, when the traction body 123 is twisted and enters the reel 122 in a twisted state, the reel 122 will extrude the twisted traction body 123 during winding the traction body 123, which is easy to cause the traction body 123 to produce irreversible plastic deformation, thereby making the traction body 123 easy to be deformed, thereby affecting the service life of the traction body 123.

[0062] The structure of the elastic member 1313 is not limited in the present application, as long as the elastic member 1313 can be deformed elastically when the rotating member 1311 rotates. For example, the elastic member 1313 can be a spring, one end of the elastic member 1313 is connected to the rotating member 1311, and the other end of the elastic member 1313 is connected to the bearing member 11. Alternatively, the elastic member 1313 can be an elastic sheet, one end of the elastic sheet is connected to the rotating member 1311, and the other end of the elastic member 1313 is connected to the bearing member 11. Alternatively, the elastic member 1313 can be a torsion spring, one end of the torsion spring is connected to the rotating member 1311, and the other end of the torsion spring is connected to the bearing member 11.

[0063] Please refer to Figure 3 Further, when the elastic member 1313 is a spring, the rotating member 1311 includes a rotating wheel 13111 and an extension arm 13112. The rotating wheel 13111 is arranged along the second direction and is located between the winding wheel 122 and the outer high-branch pruning shears body. The rotating wheel 13111 is rotationally connected to the bearing member 11 and can rotate around the second axis. One end of the traction body 123 passes through the rotating wheel 13111 and is wound around the winding wheel 122. One end of the extension arm 13112 is connected to the rotating wheel 13111. One end of the elastic member 1313 is connected to the extension arm 13112, and the other end of the elastic member 1313 is connected to the bearing member 11. The elastic force released by the elastic member 1313 is used to drive the extension arm 13112 to reset the rotating wheel 13111.

[0064] In this way, when the traction body 123 is relaxed, the traction body 123 does not press the rotating wheel 13111 and the extension arm 13112 during winding, and the traction body 123 does not rotate or the force applied by the traction body 123 to the rotating wheel 13111 or the extension arm 13112 is not enough to make the rotating wheel 13111 rotate, and the trigger switch 1321 is not triggered. When the traction body 123 is tensioned, the traction body 123 presses the rotating wheel 13111 and the extension arm 13112 during winding, and the extension arm 13112 forms a force arm. The traction body 123 is more likely to drive the rotating wheel 13111 to rotate around the second axis, and the rotating wheel 13111 drives the actuator 1312 to actuate the trigger switch 1321 with greater force, so as to ensure that the trigger switch 1321 can be stably triggered.

[0065] Specifically, one side of the extension arm 13112 is tangent to the outer circumferential surface of the rotating wheel 13111 and is used to bear the traction body 123. This facilitates the traction body 123 to smoothly transition from the rotating wheel 13111 to the extension arm 13112, so as to more fully resist and support the traction body 123.

[0066] Further, the other end of the extension arm 13112 is configured with an arc surface, one end of the traction body 123 passes through the arc surface and is wound on the outer periphery of the winding wheel 122, the arc surface is used to adjust the angle of the traction body 123 entering the winding wheel 122; a support inflection point of the traction body 123 is formed through the arc surface, so that the traction body 123 is bent along the arc surface, and the bending stress of the traction body 123 at the inflection point is controlled within a reasonable range, so that the deformation of the traction body 123 when bent is elastic deformation, which is beneficial to the shape retention of the traction body 123 when relaxed, so as to avoid the traction body 123 from being deformed.

[0067] Please refer to Figure 3 Further, the detection mechanism 13 further comprises a guide piece 133, the guide piece 133 and the trigger assembly 131 are arranged along a second direction perpendicular to the first direction, and are arranged between the trigger assembly 131 and the outer high branch shears body, the guide piece 133 is rotationally connected to the carrier 11, one end of the traction body 123 passes through the guide piece 133 and the trigger assembly 131 in turn and is wound on the outer periphery of the winding wheel 122, the guide piece 133 is used to adjust the angle of the traction body 123 entering the trigger assembly 131, specifically, the guide piece 133 is used to adjust the angle of the traction body 123 entering the rotating wheel 13111.

[0068] The structure of the guide piece 133 is not limited in the application, which is exemplary; the guide piece 133 can be a guide block, the guide block has an arc surface for adjusting the angle of the traction body 123 entering the trigger assembly 131, one end of the traction body 123 is wound on the arc surface and then enters the trigger assembly 131, the arc surface is used to adjust the angle of the traction body 123 entering the trigger assembly 131 and is used to form an inflection point of the traction body 123 at the arc surface.

[0069] Alternatively, please refer to Figure 3 Preferably, the guide piece 133 comprises two guide wheels 1331, the two guide wheels 1331 are oppositely arranged along a third direction perpendicular to the second direction, both ends of each guide wheel 1331 in the first direction are rotationally connected to the carrier 11, a guide groove is formed between the two guide wheels 1331 and the carrier 11, one end of the traction body 123 passes through the guide groove and is wound on the trigger assembly 131 and then is wound on the winding wheel 122, and the position of the guide groove is arranged in a staggered manner along the third direction with the contact end between the traction body 123 and the trigger assembly 131.

[0070] In this way, the traction body 123 is clamped between the two guide wheels 1331, so as to limit the free movement space and the twisting space of the traction body 123, thereby reducing the risk of deformation of the traction body 123.

[0071] In this embodiment, the cross-sectional shape and size of the guide groove are exactly the same as those of the traction body 123, so as to further limit the twisting space of the traction body 123, thereby further reducing the risk of deformation of the traction body 123.

[0072] Please refer to Figure 2 In some embodiments, the carrier 11 comprises a carrier body 111 and a first stop body 112, the rotating wheel 13111 and the winding wheel 122 are both rotationally connected to the carrier body 111, the driving member 121 is fixedly connected to the carrier body 111, the first stop body 112 is connected to the carrier body 111 and is adjacent to the trigger switch 1321, one end of the poking member 1312 is connected to the rotating wheel 13111, the other end of the poking member 1312 is arranged between the first stop body 112 and the trigger switch 1321, and the elastic force released by the elastic member 1313 is used to drive the extension arm 13112 to rotate the rotating member 1311 and the poking member 1312 to abut against the first stop body 112, so as to reset the rotating member 1311, so as to limit the stroke of the rotating member 1311 when being reset by the first stop body 112.

[0073] Please refer to Figure 2 In some embodiments, the carrier 11 further comprises a second stop body 113, the second stop body 113 is adjacent to one side of the extension arm 13112 away from the traction body 123 and is connected to the carrier body 111, and when the poking member 1312 presses the trigger switch 1321, the second stop body 113 abuts against the extension arm 13112.

[0074] In this way, the second stop body 113 limits the stroke of the rotating member 1311 when driving the poking member 1312 to press the trigger switch 1321, so as to avoid excessive extrusion of the poking member 1312 to the trigger switch 1321, thereby avoiding damage to the trigger switch 1321 and affecting the service life of the trigger switch 1321.

[0075] Further, when the second stop body 113 abuts against the extension arm 13112, the extension direction of the extension arm 13112 is the second direction.

[0076] Please refer to Figure 1 In some embodiments, the winding wheel assembly 12 further comprises a driving switch 124, the driving switch 124 is mounted on the carrier 11 and is electrically connected to the driving member 121, so as to control the start or stop of the motor through the driving switch 124.

[0077] The disclosure also provides a high pruning shear, which comprises the transmission structure 10, a rod body and a high pruning shear body, the transmission structure 10 is connected to one end of the rod body, the high pruning shear body is connected to the other end of the rod body, and the transmission structure 10 is used to drive the high pruning shear body to perform shearing work.

[0078] Further, the structure of the carrier 11 is not limited, and the carrier 11 is configured as a rod body, or the carrier 11 is a separate component and connected to one end of the rod body.

[0079] The working principle of the high branch shears is as follows:

[0080] First, the driving member 121 is started by the driving switch 124, and the driving member 121 drives the winding wheel 122 to rotate around the first axis and wind the relaxed traction body 123;

[0081] Then, when the traction body 123 is tensioned, the traction body 123 presses the rotating wheel 13111 and the extension arm 13112, and drives the rotating wheel 13111 and the extension arm 13112 to rotate around the second axis, so that the rotating wheel 13111 drives the actuating member 1312 to rotate around the second axis and press the trigger switch 1321;

[0082] Finally, the trigger switch 1321 is pressed to generate a trigger signal, the trigger signal is transmitted to the detecting member 1322, the detecting member 1322 starts to detect the rotation angle of the winding wheel 122, and controls the winding wheel 122 to stop rotating after rotating a predetermined angle, so that the traction body 123 can just completely close the opening of the high branch shears after being tensioned, avoiding the opening of the high branch shears being over-closed or not completely closed, thereby ensuring the working effect of the high branch shears.

[0083] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A transmission structure, characterized by, The transmission structure comprises: a bearing; a winding wheel assembly comprising a driving member, a winding wheel and a traction body, the winding wheel being rotationally connected to the bearing, the driving member being connected to the bearing and the winding wheel and being used to drive the winding wheel to rotate, one end of the traction body being wound around the winding wheel, the other end of the traction body being used to connect to an external long-reach pruning shears body; a detection mechanism being adjacently arranged to the winding wheel and being connected to the bearing, the detection mechanism being used to detect whether the traction body is tensioned; wherein when the traction body is tensioned, the detection mechanism controls the driving member to drive the winding wheel to rotate around a first axis by a predetermined angle, so as to make the traction body drive the external long-reach pruning shears body to perform work, the first axis extending along a first direction.

2. The transmission arrangement of claim 1, wherein The detection mechanism comprises: a trigger assembly being arranged along a second direction away from the winding wheel and being arranged between the winding wheel and the external long-reach pruning shears body, the trigger assembly being rotationally connected to the bearing and being able to rotate around a second axis parallel to the first axis, one end of the traction body being wound around the winding wheel after passing through the trigger assembly; a detection assembly comprising a trigger switch and a detection member, the trigger switch being adjacently arranged to the trigger assembly and being electrically connected to the detection member, the detection member being used to control the winding wheel to rotate by a predetermined angle; wherein when the traction body is tensioned, the traction body abuts against the trigger assembly and drives the trigger assembly to rotate around the second axis, so as to make the trigger assembly press the trigger switch.

3. The transmission arrangement of claim 2, wherein, The trigger assembly comprises: a rotating member being arranged along a second direction away from the winding wheel and being arranged between the winding wheel and the external long-reach pruning shears body, the rotating member being rotationally connected to the bearing and being able to rotate around the second axis, one end of the traction body being wound around the winding wheel after passing through the rotating member; a pushing member being connected to one side of the rotating member in the first direction and being used to press the trigger switch; a resilient member, one end of the resilient member being connected to the rotating member, the other end of the resilient member being connected to the bearing, the resilient force released by the resilient member being used to drive the rotating member to reset; wherein the contact end between the traction body and the rotating member and the winding end of the traction body and the winding wheel are arranged away from each other along a third direction, and the first direction, the second direction and the third direction are arranged away from each other.

4. The transmission structure according to claim 2, wherein the detection mechanism further comprises a guide member, the guide member and the trigger assembly being arranged away from each other along a second direction perpendicular to the first direction and being arranged between the trigger assembly and the external long-reach pruning shears body, the guide member being rotationally connected to the bearing; one end of the traction body is wound around the outer periphery of the winding wheel after sequentially passing through the guide member and the trigger assembly, the guide member being used to adjust the angle of the traction body entering the trigger assembly.

5. The transmission structure according to claim 4, wherein The guide comprises two guide wheels, the two guide wheels are oppositely arranged along a third direction perpendicular to the second direction, and two ends of each guide wheel in the first direction are rotationally connected to the carrier; A guide groove is formed between the two guide wheels and the carrier, one end of the traction body passes through the guide groove, is wound around the trigger assembly, and is wound around the winding wheel, and the position of the guide groove is offset from the contact end between the traction body and the trigger assembly along the third direction.

6. The transmission arrangement of claim 3, wherein, The rotating member comprises: A rotating wheel is arranged along the second direction and between the winding wheel and the high-branch shears body, the rotating wheel is rotationally connected to the carrier and can rotate around the second axis, one end of the traction body passes around the rotating wheel and is wound around the winding wheel; An extension arm is connected to the rotating wheel, one end of the elastic member is connected to the extension arm, and the other end of the elastic member is connected to the carrier, and the elastic force released by the elastic member is used to drive the extension arm to drive the rotating wheel to reset.

7. The transmission arrangement of claim 6, wherein, The carrier comprises: A carrier body, the rotating wheel and the winding wheel are rotationally connected to the carrier body, and the driving member is fixedly connected to the carrier body; A first stop body is connected to the carrier body and is adjacent to the trigger switch, one end of the actuating member is connected to the rotating wheel, and the other end of the actuating member is arranged between the first stop body and the trigger switch; wherein The elastic force released by the elastic member is used to drive the extension arm to drive the rotating member and the actuating member to rotate to the first stop body, so that the rotating member resets.

8. The transmission structure according to claim 7, wherein The carrier further comprises a second stop body, the second stop body is adjacent to one side of the extension arm away from the traction body and is connected to the carrier; wherein When the actuating member presses the trigger switch, the second stop body abuts against the extension arm.

9. The transmission structure according to claim 8, wherein The other end of the extension arm is provided with an arc surface, one end of the traction body passes through the arc surface and is wound around the outer periphery of the winding wheel, and the arc surface is used to adjust the angle of the traction body entering the winding wheel.

10. A high-lift lopper characterized by, The high-branch shears comprise: The transmission structure according to any one of claims 1-9; A rod body, the transmission structure is connected to one end of the rod body; A high-branch shears body is connected to the other end of the rod body, and the transmission structure is used to drive the high-branch shears body to perform shearing work.

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