Pull rope state detection mechanism and insulating high branch scissors applying same

Abstract

The utility model discloses a stay cord state detection mechanism and insulating high branch scissors using the same, and relates to the technical field of electric control scissors, the stay cord state detection mechanism comprises a shell, the shell is provided with a rope tensioner and a tensioning transition piece, the rope tensioner is provided with a jacking output end corresponding to a loaded elastic piece, and the tensioning transition piece is provided with a jacking output end corresponding to the loaded elastic piece. The rope tensioner outputs different detection signals according to the jacking position of the jacking output end; the tensioning transition piece is jacked by the jacking output end to carry out jacking tensioning compensation on the detection line segment along a specified moving route; the tensioning transition piece is further configured to amplify the jacking distance of the jacking output end to the stress part to the jacking distance of the tensioning part to the detection line segment and / or amplify the jacking contact area of the jacking output end to the stress part to the jacking contact area of the tensioning part to the detection line segment, so that the improvement of the detection result of the tightness of the detection line segment is facilitated; and the condition of misrecognition caused by jittering of the pull rope during winding and unwinding due to the fact that the jacking contact area with the detection line segment is small can be better resisted.

Description

Technical Field

[0001] The utility model relates to the technical field of electric-controlled scissors, in particular to a pull rope state detection mechanism and an insulated high-branch pruning shears using the same. Background Art

[0002] Current insulated high-branch shears, when unwinding the wire via a motor and a reel (corresponding to the opening action of the shears blades), are equipped with a detection device for detecting the tightness of the wire to prevent excessive unwinding and entanglement. For example, in Chinese invention application "A medium- and long-distance shearing device and control method" with publication number CN117256339A, during opening, the traction wire or traction belt is subjected to a traction tensioning force caused by elastic reset by an elastic reset member. Furthermore, when the reel is controllably unwound, the traction wire or traction belt can also exert a large traction force on the guide wheel, thereby enabling the guide wheel to rotate in response to the opening control (at this time, the rotation direction is opposite to the rotation direction during shearing). Furthermore, after opening to the maximum angle, the elastic reset member is in a state of complete elastic deformation recovery or the second blade is blocked by a blade stopper on the mounting frame to continue opening. That is, at this point, the elastic reset member no longer provides traction tensioning force for the traction wire or traction belt. At this point, even if the reel continues to unwind, the soft traction wire or traction belt can no longer drive the guide wheel, or the amount of rotation it causes is very small. By giving the guide wheel the above-mentioned characteristics when the blade is cutting and opening, and correspondingly detecting the rotation of the guide wheel through the rotation detection unit, it is more conducive to accurately detecting its status, such as detecting whether it is opened to the maximum opening. For example, when controlling the opening of the blade, when it is detected that the guide wheel has stopped rotating, it can be determined that it has been opened to the maximum opening. At this time, the control of stopping the unwinding can be made, thereby preventing the traction line or traction belt from being entangled due to continued unwinding.

[0003] Or as in U.S. patent application "TREE PRUNER" with publication number US20240268276A1, a tension management system is communicatively connected to a control system for detecting a slack rope condition in which the tension of the transmission rope is below a predetermined limit value. The control system is adapted to prevent the motor from rotating in a second direction opposite to the first direction in response to detecting a slack rope condition. Thus, the tension management system, together with the control system, is adapted to reduce the risk of the transmission rope becoming entangled. The tension management system includes a spring-loaded rope tensioner. The tension management system is adapted to detect a slack rope condition based on the position of the spring-loaded rope tensioner. The spring-loaded rope tensioner is adapted to receive a tensioned length of the transmission rope so that the spring-loaded rope tensioner can compensate for stretching having the tensioned length. That is, the slack of the rope can be determined by the elastic pressure of the spring-loaded rope tensioner on the rope; when the rope is in a taut state, it is difficult for the spring-loaded rope tensioner to press the rope, resulting in a smaller amount of tension compensated by the spring-loaded rope tensioner for the rope (i.e., a smaller amount of displacement of the pressing end); when the rope is in a slack state, it is easier for the spring-loaded rope tensioner to press the rope, resulting in a larger amount of tension compensated by the spring-loaded rope tensioner for the rope (i.e., a larger amount of displacement of the pressing end); by detecting and determining the displacement of the pressing end, the current slack of the rope can be identified.

[0004] However, when the spring-loaded rope tensioner is used to detect the slack of the rope in the above-mentioned type of electric scissors, there is a lack of corresponding in-depth research on how to set the specific mechanism of the spring-loaded rope tensioner to better detect the tightness of the rope. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rope state detection mechanism, comprising a housing, a rope to be detected is constituted by a detection line segment which can be pulled and tightened on the housing, a rope tensioner loaded with an elastic member is installed on the housing, the rope tensioner has a top pressure output end corresponding to the loaded elastic member, and the rope tensioner is constituted to output different detection signals according to the top pressure position of the top pressure output end; a tensioning transition piece can also be movably provided on the housing, and the tensioning transition piece has a designated movable position on the housing. The tensioning transition piece is configured to be pushed by the pressure output end and to perform pressure and tension compensation on the detection line segment along the specified moving route; wherein, the tensioning transition piece comprises a force-bearing portion that is pressed by the pressure output end, and a tensioning portion that performs pressure and tension with the detection line segment; the tensioning transition piece is further configured to amplify the pressure distance of the pressure output end on the force-bearing portion to the pressure distance of the tensioning portion on the detection line segment and / or amplify the pressure contact area of the pressure output end on the force-bearing portion to the pressure contact area of the tensioning portion on the detection line segment.

[0007] As a further solution of the present invention: the tensioning transition piece includes a transition rocker arm rotatably connected to the shell, the transition rocker arm has a rocker arm proximal end rotatably connected to the shell, and a rocker arm distal end away from the rocker arm proximal end; the force-bearing part is arranged on the rocker arm proximal end of the transition rocker arm; the tensioning part is arranged on the rocker arm distal end of the transition rocker arm; when the force-bearing part is pressed at the top pressure output end to cause the transition rocker arm to rotate on the shell, the tensioning part on the rocker arm distal end is driven by the rotated transition rocker arm to move in the direction of the top pressure detection line segment.

[0008] As a further solution of the present invention: the detection line segment has a wide contact surface for contacting the tensioning portion.

[0009] As a further solution of the present invention, the pressing contact area of the tensioning portion on the contact wide surface is larger than the pressing contact area of the pressing output end on the force-bearing portion.

[0010] As a further solution of the present invention: the rope tensioner loaded with the elastic member is a micro switch, and the top pressure output end is a switch sub or a movable arm of the micro switch.

[0011] As a further solution of the present invention: the elastic member is a spring.

[0012] As a further solution of the present invention: at least two guide wheels are provided on the housing, and the detected pull rope is guided by the guide wheels.

[0013] As a further solution of the present invention: the detection line segment is a line segment in the pull rope located between the two guide wheels.

[0014] As a further solution of the present invention: the detection line segment is a flat or strip-shaped line segment.

[0015] The utility model provides the following technical solution: an insulated high-branch shears, comprising the above-mentioned pull rope state detection mechanism.

[0016] Compared with the prior art, the beneficial effects of the present technical solution are: the top pressure distance and / or the top pressure contact area output by the rope tensioner is amplified through the tensioning transition piece, so that the rope tensioner can determine the larger tightness corresponding to the detection segment through a smaller top pressure output and / or a smaller top pressure area, that is, a small top pressure output can correspond to a large tightness of the detection segment, which is more conducive to improving the detection result of the tightness of the detection segment; and / or resisting the situation where the rope is misidentified due to the shaking of the rope when it is reeled in and out due to the small top pressure contact area with the detection segment.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 It is a structural diagram of the rope state detection mechanism of the utility model;

[0020] Figure 2 yes Figure 1 A magnified schematic diagram of the local structure at center A;

[0021] Figure 3 This is a schematic diagram of the coordination between the tensioning transition piece, the rope tensioner, and the detection line segment in the utility model;

[0022] Figure 4 This is a schematic structural diagram of the insulated high-branch shears of the present utility model;

[0023] Figure 5 This is a schematic diagram of the installation of the drive motor in the utility model;

[0024] Figure 6 It is a schematic diagram of the installation of the winding wheel in the utility model.

[0025] The corresponding reference numerals in the accompanying drawings are described as follows:

[0026] Shell-1,

[0027] Rope tensioner-2, top pressure output-21,

[0028] Tensioning transition piece-3, force bearing part-31, tensioning part-32, rocker proximal end-33, rocker distal end-34,

[0029] Guide wheel-4,

[0030] Pull rope-100, detection line segment-101, contact wide surface-102,

[0031] Extension rod-200,

[0032] Scissor head-300, movable blade-301, tension spring-302,

[0033] Controller-400,

[0034] Drive motor-500,

[0035] Reel-600,

[0036] Intermediate transition rope-700. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] See also Figure 1-6 A rope state detection mechanism includes a housing 1, and a rope 100 to be detected is configured to have a detection line segment 101 on the housing 1 that can be pulled and tightened.

[0039] A rope tensioner 2 loaded with an elastic member is installed on the shell 1. The rope tensioner 2 has a top pressure output end 21 corresponding to the loaded elastic member. The rope tensioner 2 is configured to output different detection signals according to the top pressure position of the top pressure output end 21; a tensioning transition piece 3 can also be movably provided on the shell 1. The tensioning transition piece 3 has a designated movable route on the shell 1, and the tensioning transition piece 3 is configured to be pushed by the top pressure output end 21 and perform top pressure tensioning compensation on the detection segment 101 along the designated movable route; wherein the tensioning transition piece 3 has a force-bearing portion 31 pressed by the top pressure output end 21, and a tensioning portion 32 that performs top pressure tensioning with the detection segment 101.

[0040] The tensioning transition piece 3 is also configured to amplify the pressing distance of the pressing output end 21 on the force-bearing part 31 to the pressing distance of the tensioning part 32 on the detection line segment 101 and / or amplify the pressing contact area of the pressing output end 21 on the force-bearing part 31 to the pressing contact area of the tensioning part 32 on the detection line segment 101.

[0041] Top pressure tension compensation means that when the pull rope 100 changes from a tensioned state to a relaxed state, the top pressure output end 21 can correspond to the top pressure dynamic tensioning transition piece 3 and move toward the direction close to the detection segment 101, so that the tensioning transition piece 3 can or as much as possible contact with the detection segment 101, so that the relaxation state of the detection segment 101 is weakened or tends to be weakened.

[0042] The top pressure distance and / or top pressure contact area output by the rope tensioner 2 is amplified by the tensioning transition piece 3, so that the rope tensioner 2 can, through a smaller top pressure output and / or a smaller top pressure area, determine a larger tightness corresponding to the detection segment 101, that is, a small top pressure output can correspond to a large tightness of the detection segment, which is more conducive to improving the detection result of the tightness of the detection segment 101; and / or resist the situation where the pull rope 100 is misidentified due to the shaking of the pull rope when it is wound and unwound due to the small top pressure contact area with the detection segment 101.

[0043] In some embodiments, the tensioning transition piece 3 includes a transition rocker arm rotatably connected to the shell 1, the transition rocker arm having a rocker arm proximal end 33 rotatably connected to the shell 1, and a rocker arm distal end 34 away from the rocker arm proximal end; the force-bearing portion 31 is arranged on the rocker arm proximal end 33 of the transition rocker arm; the tensioning portion 32 is arranged on the rocker arm distal end 34 of the transition rocker arm.

[0044] When the pressure output end 32 presses the force-bearing portion 31 and causes the transition rocker to rotate on the housing 1, the tensioning portion 32 on the rocker distal end 34 is driven by the rotating transition rocker to move along the pressure detection line segment 101. The pressure output is amplified by the rotation.

[0045] In some embodiments, the detection wire segment 101 has a wide contact surface 102 for contacting the tensioning portion 32 .

[0046] The pressing contact area of the tensioning portion 32 against the wide contact surface 102 is larger than the pressing contact area of the pressing output end 21 against the force-bearing portion 31 .

[0047] In some embodiments, the detection line segment 101 is a flat or ribbon-shaped line segment, such as a pull rope being a traction belt.

[0048] In some embodiments, the rope tensioner 2 with elastic member loading is a micro switch, and the top pressure output end 21 is a switch or a movable arm of the micro switch.

[0049] In some embodiments, the elastic member is a spring.

[0050] In some embodiments, at least two guide wheels 4 are provided on the housing 1 , and the pull rope to be detected is guided by the guide wheels 4 .

[0051] Preferably, the detection line segment 101 is a line segment in the pull rope located between the two guide wheels 4. The guide wheels 4 guide the pull rope 100 so that the tension change of the detection line segment 101 is more accurate when the tension is detected.

[0052] In this embodiment, an insulated high-branch lopper includes the pull rope state detection mechanism of any of the above embodiments.

[0053] In some embodiments, the insulated high-branch shears further include a pull rope 100 , an extension rod 200 , a scissor head 300 , a controller 400 , a drive motor 500 , and a winding wheel 600 driven by the drive motor 500 . The winding wheel 600 can reel in and unreel the pull rope 100 .

[0054] When the winding wheel 600 reels the pull rope 100, the movable blade 301 of the scissors head 300 can be pulled through the pull rope 100 or through the intermediate transition pull rope 700 connected to the pull rope to perform a shearing action. The shearing action is that the movable blade 301 of the scissors head cooperates with the other blade of the scissors head to form shearing.

[0055] When the reel 600 unwinds the pull rope 100, the movable blade 301 is pulled by the tension spring 302 on the scissors head 300 to open. The opening action is that the movable blade 301 of the scissors head cooperates with the other blade of the scissors head to form an opening opposite to shearing, such as rotating opening. When the tension spring 302 pulls the movable blade 301 and then pulls the pull rope 100, the winding wheel 600 can keep the pull rope 100 in a tensioned state or in a tensioned state as much as possible during the unwinding process of the pull rope 100; when the tension spring 302 pulls the movable blade 301 to the opening end or the maximum pulling position, the pull rope 100 will stop being pulled. At this time, if the winding wheel 600 unwinds the pull rope 100, the pull rope 100 will gradually change from tensioned to relaxed, that is, the top pressure output end 21 can press the dynamic tensioning transition piece 3, so that the rope tensioner 2 outputs a detection signal indicating the relaxation of the detection segment 101 or the amount of relaxation of the detection segment 101 according to the top pressure position of the top pressure output end 21.

[0056] The controller 400 receives different detection signals outputted by the rope tensioner 2 according to the pressing position of the pressing output terminal 21 , and the controller 400 determines the slack of the pull rope 100 according to the different detection signals received, thereby making corresponding output control.

[0057] In some embodiments, when the controller 400 determines that the pull rope 100 is loose, the controller 400 controls the drive motor 500 to stop the winding wheel 600 from continuing to unwind the pull rope 100 .

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A pull rope state detection mechanism, comprising a housing, wherein the pull rope to be detected is configured to have a detection line segment on the housing that can be pulled tight, characterized in that: A rope tensioner loaded with an elastic member is mounted on the housing. The rope tensioner has a top pressure output end corresponding to the loaded elastic member. The rope tensioner is configured to output different detection signals according to the top pressure position of the top pressure output end. A tensioning transition piece may also be movably provided on the housing, and the tensioning transition piece has a designated movable route on the housing. The tensioning transition piece is configured to be pushed by the top pressure output end and to perform top pressure tension compensation on the detection line segment along the designated movable route; The tensioning transition piece comprises a force-bearing portion that is pressed by the pressing output end, and a tensioning portion that is pressed and tensioned by the detection line segment; The tensioning transition piece is also configured to amplify the pressing distance of the top pressure output end on the force-bearing part to the pressing distance of the tensioning part on the detection line segment and / or amplify the pressing contact area of the top pressure output end on the force-bearing part to the pressing contact area of the tensioning part on the detection line segment.

2. The pull rope state detection mechanism according to claim 1, characterized in that: The tensioning transition piece includes a transition rocker rotatably connected to the housing, the transition rocker having a rocker proximal end rotatably connected to the housing, and a rocker distal end away from the rocker proximal end; The force-bearing portion is arranged on the proximal end of the transition rocker; The tensioning portion is provided on the distal end of the transition rocker; When the force-bearing part is pressed at the pressing output end to rotate the transition rocker on the housing, the tensioning part on the far end of the rocker is driven by the rotating transition rocker to move along the pressing detection line segment.

3. The pull rope state detection mechanism according to claim 1 or 2, characterized in that: The detection line segment has a wide contact surface for contacting the tensioning portion.

4. The pull rope state detection mechanism according to claim 3, characterized in that: The pressing contact area of the tensioning portion on the contact wide surface is greater than the pressing contact area of the pressing output end on the force-bearing portion.

5. The pull rope state detection mechanism according to claim 1, 2 or 4, characterized in that: The rope tensioner with elastic member loading is a micro switch, and the top pressure output end is a switch sub or a movable arm of the micro switch.

6. The pull rope state detection mechanism according to claim 5, characterized in that: The elastic member is a spring.

7. The pull rope state detection mechanism according to claim 1, 2, 4 or 6, characterized in that: At least two guide wheels are provided on the housing, and the detected pull rope is guided by the guide wheels.

8. The pull rope state detection mechanism according to claim 7, characterized in that: The detection line segment is the line segment between the two guide wheels in the pull rope.

9. The pull rope state detection mechanism according to claim 1, 2, 4, 6 or 8, characterized in that: The detection line segment is a flat or strip-shaped line segment.

10. An insulated high-branch shear, characterized in that: It includes the rope state detection mechanism according to any one of claims 1 to 9.

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