Mower blade dynamic balance detection device

Abstract

The present invention relates to the technical field of lawn mowers, and in particular to a lawn mower cutting blade dynamic balance detection device, comprising: a bracket, fixedly installed and used to carry other components; an intermediate ring, the top of which is used to place the cutting blade, and the middle of the intermediate ring is provided with a clamp for clamping the cutting blade; a driving mechanism, fixed on the bracket, used to drive the intermediate ring, the cutting blade and the clamp to rotate; a horizontal supporting mechanism, arranged on the bracket, used to adapt to the displacement of the cutting blade in the horizontal direction due to imbalance during rotation; a reset mechanism, used to reset the cutting blade and the intermediate ring that have stopped rotating; a vibration detector, fixed on the intermediate ring; a detection mechanism, used to judge the vibration position of the cutting blade and adjust the counterweight; it can automatically detect the unbalanced position of the blade and provide corresponding adjustment suggestions, thereby significantly reducing human intervention and improving the professional and automation level of the entire detection process.

Description

Technical Field

[0001] The invention relates to the technical field of lawn mowers, and in particular to a lawn mower cutting blade dynamic balance detection device. Background Art

[0002] With the continuous improvement of agricultural mechanization, lawn mowers are one of the important equipment in farmland operations, and their performance directly affects the quality and efficiency of crop harvesting. One of the core components of a lawn mower is the cutter blade, and its stable rotation is crucial to ensure the working effect of the lawn mower. Cutter blades with poor dynamic balance will not only cause the machine to vibrate more and affect the quality of mowing, but may also accelerate the wear of mechanical parts, shorten the service life of the machine, and pose a safety threat to the operator.

[0003] Traditional methods for dynamic balancing of cutter blades usually use a semi-automatic method, that is, using a vibration detector and experience to determine whether the blade needs to be adjusted and how to adjust it. This method has many shortcomings: the cutter blade needs to be restarted after each adjustment to verify the adjustment effect, which is a time-consuming and inefficient process; secondly, frequent startup and shutdown will increase energy consumption and cause unnecessary wear on the cutter blade and its transmission system. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a lawn mower blade dynamic balance detection device, which can automatically detect the imbalance position of the blade and provide corresponding adjustment suggestions, thereby significantly reducing human intervention and improving the specialization and automation level of the entire detection process.

[0005] The lawn mower blade dynamic balance detection device of the present invention comprises:

[0006] Bracket, fixed installation, used to carry other components;

[0007] An intermediate ring, the top of which is used to place the cutter blade, and a clamp for clamping the cutter blade is provided in the middle of the intermediate ring;

[0008] A driving mechanism, fixed on the bracket, is used to drive the intermediate ring, the cutting blade and the clamp to rotate;

[0009] A horizontal support mechanism is provided on the bracket to accommodate the displacement of the cutter blade in the horizontal direction due to imbalance during rotation;

[0010] A reset mechanism, used to reset the cutter blades and the intermediate ring that have stopped rotating;

[0011] A vibration detector, fixed on the middle ring;

[0012] Detection mechanism, used to determine the vibration position of the cutter blade and adjust the counterweight;

[0013] Testing agencies include:

[0014] The magnetic ring is coaxially fixed on the middle ring, and a coil is arranged inside the magnetic ring;

[0015] The rotating ring is coaxially arranged with the middle ring and driven to rotate by the driving mechanism; the rotating ring is located outside the magnetic ring; and two annular conductive sheets with different diameters are arranged through the rotating ring;

[0016] The clamping ring can slide along the axis of the rotating ring, and the clamping ring and the rotating ring remain relatively stationary in the circumferential direction;

[0017] A magnetic block, in which a coil is arranged, is slidably mounted on two annular conductive sheets; the magnetic block is located between the rotating ring and the clamping ring;

[0018] The energizing mechanism is used to control the coil in the magnetic block to reach a closed or energized state.

[0019] As a preferred solution of the present invention, the energizing mechanism comprises:

[0020] A fixing frame, fixed on the bracket;

[0021] The rotating shaft is capable of self-rotation and sliding along its axial direction and is arranged on a fixed frame; a conductive sheet 2 and a conductive sheet 3 are fixed to one end of the rotating shaft, and a conductive sheet 4 and a conductive sheet 5 are fixed to the other end of the rotating shaft; wherein the conductive sheet 2 is electrically connected to the conductive sheet 4, and the conductive sheet 3 is electrically connected to the conductive sheet 5;

[0022] A sliding plate is slidably mounted on the fixed frame, one end of the rotating shaft is rotatably mounted on the sliding plate, two contact pieces are mounted on the sliding plate, and the two contact pieces are respectively abutted against the conductive piece 4 and the conductive piece 5;

[0023] A power mechanism 1, one end of which is rotatably mounted on a fixed frame, and the other end of which is rotatably mounted on a sliding plate;

[0024] Among them, the width of the conductive sheet 2 is relatively large. When the coil in the magnetic block is closed, the conductive sheet 2 contacts the two annular conductive sheets 1; when the coil in the magnetic block is energized, the conductive sheet 2 and the conductive sheet 3 respectively abut against the two annular conductive sheets 1.

[0025] As a preferred solution of the present invention, the driving mechanism includes:

[0026] The driving disc is rotatably mounted on the bracket, and the driving disc is coaxial with the intermediate ring; the driving disc is fixedly connected with the rotating ring;

[0027] The power assembly is fixed on the bracket and is used to drive the driving disc to rotate.

[0028] As a preferred solution of the present invention, the power assembly includes:

[0029] A ring gear, coaxially fixed to the driving plate;

[0030] The power mechanism 2 is fixed on the bracket, and a gear is fixed on the output shaft of the power mechanism 2;

[0031] Among them, the ring gear is meshed with the gear.

[0032] As a preferred solution of the present invention, the reset mechanism includes:

[0033] An intermediate plate, located between the driving disc and the intermediate ring;

[0034] There are multiple telescopic rods, which are arranged in parallel; one end of the telescopic rod is rotatably connected to the driving disk through a ball, and the other end of the telescopic rod is rotatably connected to the middle ring through a ball; the middle part of the telescopic rod is rotatably connected to the middle plate through a ball;

[0035] The elastic member is one or more, one end of the elastic member is connected to the middle plate, and the other end is connected to the middle ring.

[0036] As a preferred solution of the present invention, the horizontal support mechanism includes:

[0037] A limiting ring is fixed on the top of the bracket, and the limiting ring is provided with an annular chamber;

[0038] A plurality of balls are rotatably mounted on the top and bottom side walls of the annular chamber;

[0039] The middle part of the intermediate ring extends outward to form an annular protrusion in the annular chamber. The inner diameter of the annular chamber is larger than the diameter of the annular protrusion. The balls support the annular protrusion for rotation.

[0040] As a preferred embodiment of the present invention, the clamp comprises:

[0041] Power mechanism three, fixed on the bracket;

[0042] The circular plate 1 is slidably mounted in the middle ring along the axial direction;

[0043] A plurality of clamping jaws are slidably mounted on the circular plate 1 along the radial direction, and the clamping jaws are "L" shaped;

[0044] The second circular plate is slidably installed in the middle ring along the axial direction, and the second circular plate is located below the first circular plate; the top surface of the second circular plate is an inverted cone surface, and the bottom end of the clamping claw is slidably connected to the inverted cone surface;

[0045] The elastic member 2 is located between the circular plate 1 and the circular plate 2, one end of the elastic member 2 is connected to the circular plate 1, and the other end is connected to the top end of the circular plate 2;

[0046] The elastic member 3 has one end connected to the bottom end of the circular plate 2;

[0047] The rotating disk is coaxially arranged with the middle ring, and the rotating disk is coaxially rotatably installed at the output end of the power mechanism three; the other end of the elastic member three is connected with the rotating disk.

[0048] As a preferred embodiment of the present invention, the clamp further comprises:

[0049] The blocking ring is fixed to the inner top of the middle ring and is used to prevent the circular plate 1 from being separated from the middle ring.

[0050] As a preferred solution of the present invention, the detection mechanism further includes:

[0051] A power mechanism four is fixed on the bracket;

[0052] A lifting ring, wherein the output end of the power mechanism 4 is connected to the lifting ring;

[0053] The clamping ring is rotatably connected to the lifting ring.

[0054] As a preferred solution of the present invention, the detection mechanism further includes:

[0055] The limiting piece is fixedly connected with the lifting ring, and the limiting piece is slidably connected with the rotating ring.

[0056] Compared with the prior art, the beneficial effects of the present invention are as follows: by using a combination of a vibration detector and a detection mechanism (including a magnetic ring, a rotating ring, a clamping ring and a magnetic block), the vibration of the blade can be accurately measured without interfering with the normal operation of the cutter blade. At the same time, the electromagnetic principle is used to automatically identify the unbalanced position, and the balance state of the blade is adjusted by changing the current size, which simplifies the operation process, reduces the requirements on the operator's skills, and improves the accuracy and reliability of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 It is a schematic diagram of the structure of the present invention;

[0058] Figure 2 It is a cross-sectional view of the middle part of the present invention;

[0059] Figure 3 yes Figure 2 A partial enlarged view of the middle A part;

[0060] Figure 4 This is a schematic diagram of the structure of the present invention after the bracket is hidden;

[0061] Figure 5 yes Figure 4 A partial enlarged view of the middle B part;

[0062] Figure 6 It is a schematic diagram of the structure of the fixture, the driving mechanism, part of the detection mechanism, the intermediate ring, the cutter blade and the reset mechanism;

[0063] Markings in the attached drawings: 1, bracket; 2, middle ring; 3, cutter blade; 4, clamp; 41, power mechanism three; 42, circular plate one; 43, clamping claw; 44, circular plate two; 45, inverted cone; 46, elastic member two; 47, elastic member three; 48, rotating disk; 49, blocking ring; 5, driving mechanism; 51, driving disk; 52, gear ring; 53, power mechanism two; 54, gear; 6, horizontal support mechanism; 61, limit ring; 62, ball; 63, annular protrusion; 7, reset mechanism; 71, middle plate; 72 , telescopic rod; 73, sphere; 74, elastic part one; 8, vibration detector; 9, detection mechanism; 91, magnetic ring; 92, rotating ring; 93, annular conductive sheet one; 94, clamping ring; 95, magnetic block; 96, power-on mechanism; 961, fixed frame; 962, rotating shaft; 963, conductive sheet two; 964, conductive sheet three; 965, conductive sheet four; 966, conductive sheet five; 967, sliding plate; 968, contact sheet; 969, power mechanism one; 97, power mechanism four; 98, lifting ring; 99, limit sheet. DETAILED DESCRIPTION

[0064] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0065] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0066] Secondly, the "embodiment" referred to herein refers to a specific feature, structure or characteristic that can be included in at least one implementation of the present invention. The "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0067] Example

[0068] Reference Figure 1-Figure 6 This embodiment provides a lawn mower blade dynamic balance detection device, comprising:

[0069] Bracket 1, fixedly installed, used to carry other components;

[0070] The middle ring 2 has a top for placing a cutter blade 3, and a clamp 4 for clamping the cutter blade 3 is provided in the middle of the middle ring 2. The cutter blade 3 can be coaxially fixed to the top of the middle ring 2 by the provided clamp 4;

[0071] The driving mechanism 5 is fixed on the bracket 1 and is used to drive the intermediate ring 2, the cutting blade 3 and the clamp 4 to rotate;

[0072] The horizontal support mechanism 6 is arranged on the bracket 1, and is used to adapt to the displacement of the cutter blade 3 in the horizontal direction due to imbalance during rotation. If the cutter blade 3 has a problem of dynamic balance, when the cutter blade 3 rotates, the cutter blade 3 can only be displaced in the horizontal direction through the arranged horizontal support mechanism 6;

[0073] A reset mechanism 7, used for resetting the cutter blade 3 and the intermediate ring 2 that have stopped rotating;

[0074] Vibration detector 8, such as Figure 1 As shown, the vibration detector 8 is fixed on the middle ring 2, and can accurately measure the vibration of the blade without interfering with the normal operation of the cutter blade 3. This non-destructive testing method avoids the errors and inconveniences that may be caused by the traditional manual measurement method;

[0075] Detection mechanism 9, used to determine the vibration position of the cutter blade 3 and adjust the counterweight;

[0076] The testing organization 9 includes:

[0077] like Figure 6 As shown, the magnetic ring 91 is coaxially fixed on the middle ring 2, and a coil is arranged inside the magnetic ring 91;

[0078] like Figure 1 As shown, the rotating ring 92 is coaxially arranged with the middle ring 2 and driven to rotate by the driving mechanism 5; the rotating ring 92 is located outside the magnetic ring 91; the rotating ring 92 is penetrated by two annular conductive sheets 93 of different diameters;

[0079] like Figure 1 and Figure 4 As shown, the clamping ring 94 can slide along the axis direction of the rotating ring 92, and the clamping ring 94 and the rotating ring 92 remain relatively stationary in the circumferential direction;

[0080] like Figure 4 and Figure 6 As shown, the magnetic block 95 has a coil disposed therein, and the magnetic block 95 is slidably mounted on two annular conductive sheets 93; the magnetic block 95 is located between the rotating ring 92 and the clamping ring 94;

[0081] The energizing mechanism 96 is used to control the coil in the magnetic block 95 to reach a closed or energized state.

[0082] The specific working process of the device is as follows: before the dynamic balancing test, the cutter blade 3 to be tested is manually placed on the top of the intermediate ring 2, and then the clamp 4 is operated to coaxially fix the cutter blade 3 on the intermediate ring 2. When the cutter blade 3 does not rotate, the intermediate ring 2, the magnetic ring 91, the rotating ring 92, the clamping ring 94 and other components are all on the same axis;

[0083] When testing, the driving mechanism 5 is turned on to rotate the middle ring 2, the magnetic ring 91, the cutter blade 3, the clamp 4, the rotating ring 92, the clamping ring 94 and the magnetic block 95, and the coil in the magnetic ring 91 is energized. At the same time, the energizing mechanism 96 controls the coil in the magnetic block 95 to be in a closed state. If the cutter blade 3 is in an unbalanced state, the cutter blade 3, the middle and the magnetic ring 91 will all shift to the heavier side, that is, the magnetic field strength on one side of the rotating ring 92 will increase, and the larger magnetic force will attract the magnetic block 95 to slide along the two annular conductive sheets 93 to the position with the largest magnetic force. In this process, the closed line in the magnetic block 95 The circle cuts the magnetic flux lines, and an induced current is generated in the closed coil in the magnetic block 95, thereby generating a back electromotive force. The existence of this back electromotive force provides a reverse thrust for the magnetic block 95 when the magnetic block 95 moves to the position with the maximum magnetic force, that is, a damping effect; since the movement of the magnetic block 95 has inertia, it will continue to move when it moves to the position with the maximum magnetic force, and similarly, a back electromotive force will be generated, which has a damping effect on the magnetic block 95. In summary, the magnetic block 95 will be damped in the process of approaching and moving away from the position with the maximum magnetic field strength; finally, the magnetic block 95 will be at the position with the maximum magnetic force, which is the place where the cutter blade 3 is heavier;

[0084] After determining the heavier position of the mower blade 3, adjustment is required, and the adjustment steps are as follows: make the clamping ring 94 descend while rotating to clamp the magnetic block 95, and the clamping ring 94, the rotating ring 92 and the magnetic block 95 are relatively static; then reduce the power supply to the coil in the magnetic ring 91, and control the power supply mechanism 96 to make the coil in the magnetic block 95 in a power-on state, and the magnetic force generated by the power supply to the coil in the magnetic block 95 repels the magnetic force generated by the power supply to the coil in the magnetic ring 91, and by increasing the power supply to the coil in the magnetic block 95, after overcoming the magnetic force generated by the magnetic ring 91 itself, the intermediate ring 2, the magnetic ring 91 and the mowing blade are forced to move in the opposite direction, until the value displayed by the vibration detector 8 reaches the appropriate range, stop the test, record the position of the magnetic block 95, the current powering the coil in the magnetic block 95, and the current powering the coil in the magnetic ring 91, and then calculate the required counterweight to be increased or the weight to be reduced according to the recorded data.

[0085] In order to control the state of the coil in the magnetic block 95, if conventional control is adopted, the operator needs to manually adjust multiple parameters, which requires high professional skills of the operator, increases the training cost and operation difficulty, such as Figures 4 to 6As shown, as a preferred solution of the present invention, the power supply mechanism 96 includes:

[0086] A fixing frame 961 is fixed on the bracket 1;

[0087] The rotating shaft 962 is capable of self-rotation and sliding along its axial direction and is arranged on the fixed frame 961, and the axis of the rotating shaft 962 is arranged along the radial direction of the rotating ring 92; a conductive sheet 2 963 and a conductive sheet 3 964 are fixed to one end of the rotating shaft 962, and a conductive sheet 4 965 and a conductive sheet 5 966 ​​are fixed to the other end of the rotating shaft 962; wherein, the conductive sheet 2 963 is electrically connected to the conductive sheet 4 965, and the conductive sheet 3 964 is electrically connected to the conductive sheet 5 966, and in order to reduce the wear on the conductive sheet, the conductive sheet 2 963, the conductive sheet 3 964, the conductive sheet 4 965 and the conductive sheet 5 966 ​​are all annular, and when the rotating ring 92 and the annular conductive sheet 1 93 rotate, the rotating shaft 962 and the like will all rotate;

[0088] The sliding plate 967 is slidably mounted on the fixing frame 961. The sliding direction of the sliding plate 967 is the radial direction of the rotating ring 92. One end of the rotating shaft 962 is rotatably mounted on the sliding plate 967. Two contact pieces 968 are mounted on the sliding plate 967. The two contact pieces 968 are respectively in contact with the conductive piece 965 and the conductive piece 966. When the rotating shaft 962 rotates, the contact piece 968 is connected to the external power supply, and can continuously supply power to the conductive piece 965 and the conductive piece 966.

[0089] A power mechanism 969, one end of which is rotatably mounted on the fixed frame 961, and the other end of which is rotatably mounted on the sliding plate 967. The power mechanism 969 can be a cylinder, an oil cylinder or an electric telescopic rod. When the power mechanism 969 performs a telescopic action, the rotating shaft 962, the sliding plate 967 and the conductive sheet are caused to slide;

[0090] Among them, the width of the conductive sheet 2 963 is relatively large. When the coil in the magnetic block 95 is closed, the conductive sheet 2 963 contacts the two annular conductive sheets 1 93; when the coil in the magnetic block 95 is energized, the conductive sheet 2 963 and the conductive sheet 3 964 respectively contact the two annular conductive sheets 1 93;

[0091] The specific working process of the power supply mechanism 96 is as follows: when the power mechanism 1 969 performs the telescopic action, the rotating shaft 962, the sliding plate 967 and the conductive sheet are caused to slide, thereby controlling the relative positions of the conductive sheet 2 963 and the conductive sheet 3 964 and the annular conductive sheet 1 93, as shown in FIG. Figure 5As shown, the width of the conductive sheet 2 963 is relatively large. When the coil in the magnetic block 95 is closed, the conductive sheet 2 963 contacts the two annular conductive sheets 1 93; when the coil in the magnetic block 95 is energized, the conductive sheet 2 963 and the conductive sheet 3 964 respectively abut against the two annular conductive sheets 1 93. Through the above process, the state of the coil in the magnetic block 95 can be controlled by controlling the extension and retraction of the power mechanism 1 969, which greatly reduces the difficulty of operation.

[0092] As a preferred embodiment of the present invention, Figure 1 , Figure 5 and Figure 6 As shown, the driving mechanism 5 comprises:

[0093] The driving disc 51 is rotatably mounted on the bracket 1, and the driving disc 51 is coaxial with the intermediate ring 2, and the coaxiality here refers to the static state; the driving disc 51 is fixedly connected to the rotating ring 92, and more specifically, the two are connected by a connecting plate;

[0094] A power assembly, fixed on the bracket 1, used to drive the driving disc 51 to rotate;

[0095] The specific working process of the driving mechanism 5 is as follows: the driving disc 51 is rotated by the power assembly, and since the driving disc 51 and the rotating ring 92 are fixedly connected via a connecting plate, the driving disc 51 and the rotating ring 92 rotate synchronously.

[0096] The traditional belt or chain transmission method is prone to slippage or wear, resulting in unstable power transmission, affecting the accuracy and efficiency of detection. As a preferred solution of the present invention, the power assembly includes:

[0097] The gear ring 52 is coaxially fixed to the driving plate 51;

[0098] The second power mechanism 53, the second power mechanism 53 adopts a servo motor, the second power mechanism 53 is fixed on the bracket 1, and the output shaft of the second power mechanism 53 is fixed with a gear 54;

[0099] Wherein, the ring gear 52 is meshed with the gear 54;

[0100] The specific working process of the power assembly is as follows: by controlling the power mechanism 2 53 to drive the gear 54 to rotate, since the gear 54 is engaged with the ring gear 52, and the ring gear 52 is fixed on the driving disk 51, the driving disk 51 is driven to rotate. This design not only improves the transmission efficiency and stability, but also reduces the maintenance cost.

[0101] like Figure 1 , Figure 2 , Figure 4 and Figure 6As shown, the reset mechanism 7 cooperates with the driving mechanism 5, which not only plays a role in centering the intermediate ring 2 after the test is completed, but also plays a role in driving the intermediate ring 2 to rotate, making the structure simpler and more convenient for maintenance. As a preferred solution of the present invention, the reset mechanism 7 includes:

[0102] The middle plate 71 is located between the driving disc 51 and the middle ring 2;

[0103] There are multiple telescopic rods 72, which are arranged in parallel and along the axis of the rotating ring 92; one end of the telescopic rod 72 is rotatably connected to the driving disk 51 through the ball 73, and the other end of the telescopic rod 72 is rotatably connected to the intermediate ring 2 through the ball 73; the middle part of the telescopic rod 72 is rotatably connected to the intermediate plate 71 through the ball 73, such as Figure 6 As shown, the telescopic rod 72, the driving disc 51 and the intermediate ring 2 form a parallelogram connecting rod structure;

[0104] There are multiple elastic members 74, one end of the elastic member 74 is connected to the middle plate 71, and the other end is connected to the middle ring 2. More specifically, the elastic member 74 is a spring;

[0105] The working process of the reset mechanism 7 is as follows: Figure 2 and Figure 6 As shown, it is in a non-test state at this time, and these elastic members 74 make the middle plate 71, the middle ring 2 and the drive disk 51 in a balanced state. Even if the middle ring 2 is in the middle position, when the test is carried out, the power component makes the drive disk 51 rotate, and the middle ring 2 and the cutter blade 3 rotate under the drive of the telescopic rod 72. When the cutter blade 3 is offset due to poor dynamic balance, the horizontal support mechanism 6 is set so that the cutter blade 3 can only be displaced in the horizontal direction. In this process, in order to adapt to the displacement change of the middle ring 2 in the horizontal direction, the telescopic rod 72 is tilted and the overall length is increased, and the elastic member 74 also undergoes adaptive changes; after the test, under the elastic force of the elastic member 74, the middle ring 2, the middle plate 71 and other components are restored to the center position.

[0106] During the dynamic balancing detection process, the imbalance of the cutter blade 3 will cause it to produce horizontal and vertical displacements during rotation. The horizontal support mechanism 6 can effectively limit this displacement, ensuring that the blade only moves in the horizontal direction during rotation without generating vertical vibrations. This can more accurately detect and analyze the imbalance of the blade. As a preferred solution of the present invention, Figure 2 and Figure 3 As shown, the horizontal support mechanism 6 includes:

[0107] A limiting ring 61 is fixed to the top of the bracket 1 through an L-shaped plate, and the limiting ring 61 is provided with an annular chamber;

[0108] A plurality of balls 62 are rotatably mounted on the top and bottom side walls of the annular chamber;

[0109] The middle part of the intermediate ring 2 extends outward to form an annular protrusion 63 in the annular chamber. The inner diameter of the annular chamber is larger than the diameter of the annular protrusion 63. The ball 62 supports the annular protrusion 63 for rotation.

[0110] The working process of the horizontal support mechanism 6 is as follows: when not tested, the annular protrusion 63 is located at the center of the annular chamber, and the inner diameter of the annular chamber is larger than the diameter of the annular protrusion 63, allowing the annular protrusion 63 to be displaced horizontally in the annular chamber. When the intermediate ring 2 and the annular protrusion 63 rotate, the ball 62 rotates to support the annular protrusion 63.

[0111] The clamp 4 is used to clamp the cutter blade 3 to prevent it from rotating relative to the intermediate ring 2 during the test. Since the clamp is tightened in the middle of the cutter blade 3, the clamp 4 needs to have two actions, one is vertical clamping and the other is horizontal clamping. In the traditional technology, these two actions mostly require two power sources, which undoubtedly increases the maintenance cost. As a preferred solution of the present invention, Figure 2 As shown, the fixture 4 includes:

[0112] The power mechanism 3 41 is fixed on the bracket 1. The power mechanism 3 41 is coaxially arranged with the driving disk 51. A through hole for the power mechanism 3 41 to pass through is opened in the center of the driving disk 51. The power mechanism 3 41 can be a cylinder, an oil cylinder or an electric telescopic rod, etc.;

[0113] The circular plate 42 is slidably mounted in the middle ring 2 along the axial direction;

[0114] A plurality of clamping jaws 43 are slidably mounted on the circular plate 1 42 along the radial direction, and the clamping jaws 43 are "L" shaped;

[0115] The second circular plate 44 is slidably mounted in the middle ring 2 along the axial direction, and the second circular plate 44 is located below the first circular plate 42; the top surface of the second circular plate 44 is an inverted cone surface 45, and the bottom end of the clamping jaw 43 is slidably connected to the inverted cone surface 45. Since the top surface of the circular plate is an inverted cone surface 45, the bottom end of the clamping jaw 43 is slidably connected to the inverted cone surface 45, and the clamping jaw 43 is slidably mounted on the first circular plate 42 along the radial direction, when there is a height difference between the first circular plate 42 and the second circular plate 44, the clamping jaw 43 can be driven to move in the radial direction;

[0116] The second elastic member 46 is located between the first circular plate 42 and the second circular plate 44. One end of the second elastic member 46 is connected to the first circular plate 42, and the other end is connected to the top of the second circular plate 44. The second elastic member 46 is a spring.

[0117] The elastic member 3 47 has one end connected to the bottom end of the circular plate 2 44, and the elastic member 3 47 is a spring;

[0118] The rotating disk 48 is coaxially arranged with the middle ring 2, and the rotating disk 48 is coaxially rotatably mounted at the output end of the power mechanism 3 41; the other end of the elastic member 3 47 is connected to the rotating disk 48;

[0119] The specific working process of the clamp 4 is as follows: since one end of the elastic member 3 47 is connected to the bottom end of the circular plate 2 44, and the other end of the elastic member 3 47 is connected to the rotating disk 48, when the middle ring 2 is tilted, the elastic member 3 47 will also be skewed. After the test is finished, the elastic force of the elastic member 3 47 can also play a certain role in restoring the initial positions of the components.

[0120] During the test, the rotating middle ring 2 drives the circular plate 1 42, the circular plate 2 44, the clamping claw 43 and the elastic member 3 47 to rotate. Since the rotating disk 48 is coaxially mounted on the output end of the power mechanism 3 41, it will not affect the rotation of the elastic member 3 47.

[0121] like Figure 2 As shown, at this time, the clamping claw 43 clamps the cutting blade 3. When the cutting blade 3 needs to be released, the power mechanism 3 41 is operated to move the rotating disk 48 and the elastic member 3 47 upward, thereby driving the circular plate 2 44, the elastic member 2 46, the circular plate 1 42 and the clamping claw 43 upward. In this process, the upwardly moved clamping claw 43 releases the cutting blade 3 in the vertical direction; when the circular plate 1 42 reaches the top limit position, the circular plate 1 42 cannot move upward, and the circular plate 2 44 continues to move upward, so that the distance between the circular plates 1 42 and 44 is reduced, and the elastic member 2 46 is further compressed. Since the top surface of the circular plate 2 44 is an inverted cone surface 45, the clamping claw 43 is moved closer to the middle in the radial direction, thereby completely releasing the cutting blade 3;

[0122] When the cutter blade 3 needs to be clamped, the cutter blade 3 is manually placed on the top of the middle ring 2, and the clamping claw 43 passes through the cutter blade 3, and then the power mechanism 3 41 is operated to descend. Since the elastic member 2 46 is in a compressed state, the circular plate 2 44 moves before the circular plate 1 42, so that the distance between the two increases, so that each clamping claw 43 moves outward to clamp the cutter blade 3. When the clamping claw 43 moves to the outer end of the inverted cone 45, it cannot move further, so that the clamping claw 43, the circular plate 1 42, the circular plate 2 44 and the elastic member 2 46 descend synchronously, so that the clamping claw 43 presses the cutter blade 3 tightly.

[0123] By means of the clamp 4 in the device, the vertical and lateral pressing actions of the clamping jaws 43 are realized through a power mechanism 3 41, thereby reducing the number of power sources and lowering maintenance costs and complexity.

[0124] As a preferred embodiment of the present invention, Figure 2 As shown, the fixture 4 also includes:

[0125] The blocking ring 49 is fixed to the inner top of the middle ring 2 to prevent the circular plate 42 from being separated from the middle ring 2;

[0126] The specific working process of the blocking ring 49 is as follows: when the circular plate 42 contacts the blocking ring 49, the circular plate 42 cannot move upward, so the subsequent process can be carried out.

[0127] In order to automatically drive the clamping ring 94 to move up and down and improve the degree of automation, as a preferred solution of the present invention, the detection mechanism 9 also includes:

[0128] like Figure 2 and Figure 3 As shown, the power mechanism 4 97 is fixed on the bracket 1. The power mechanism 4 97 can be a cylinder, an oil cylinder or an electric telescopic rod. In order to improve stability, at least two power mechanisms 4 97 are provided;

[0129] Lifting ring 98, the output end of power mechanism 4 97 is connected to the lifting ring 98;

[0130] The clamping ring 94 is rotatably connected to the lifting ring 98;

[0131] The working process of the above components is as follows: since the clamping ring 94 and the lifting ring 98 are rotationally connected, the lifting ring 98 moving in the vertical direction will not hinder the clamping ring 94. When it is necessary to control the position of the clamping ring 94, the power mechanism 4 97 is operated to make the lifting ring 98 rise or fall. Since the clamping ring 94 and the lifting ring 98 are rotationally connected, the clamping ring 94 is synchronously driven to rise or fall.

[0132] In order to prevent the clamping ring 94 and the rotating ring 92 from rotating relative to each other and failing to fix the magnetic block 95, as a preferred solution of the present invention, Figure 3 and Figure 4 As shown, the detection mechanism 9 also includes:

[0133] The limiting piece 99 is fixedly connected to the lifting ring 98, and the limiting piece 99 is slidably connected to the rotating ring 92;

[0134] The working process of the limit plate 99 is as follows: when the power mechanism four 97 is actuated to drive the clamping ring 94 to move up and down, the limit plate 99 is also driven to move up and down synchronously. Since the limit plate 99 is slidingly connected to the rotating ring 92, and even when the power mechanism four 97 is at the maximum stroke, the limit plate 99 is still slidingly connected to the rotating ring 92, so the rotating ring 92 and the clamping ring 94 cannot rotate relative to each other.

[0135] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0136] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A lawn mower blade dynamic balance detection device, characterized in that: include: A bracket (1), fixedly installed and used to carry other components; An intermediate ring (2), the top of which is used to place the cutting blade (3), and a clamp (4) for clamping the cutting blade (3) is provided in the middle of the intermediate ring (2); A driving mechanism (5) is fixed on the bracket (1) and is used to drive the intermediate ring (2), the cutting blade (3) and the clamp (4) to rotate; A horizontal support mechanism (6) is arranged on the support (1) and is used to accommodate the displacement of the cutter blade (3) in the horizontal direction due to imbalance during rotation; A reset mechanism (7) for resetting the cutter blade (3) and the intermediate ring (2) that have stopped rotating; A vibration detector (8) fixed on the intermediate ring (2); A detection mechanism (9) for determining the vibration position of the cutting blade (3) and adjusting the counterweight; The detection mechanism (9) comprises: A magnetic ring (91) is coaxially fixed on the intermediate ring (2), and a coil is arranged inside the magnetic ring (91); a rotating ring (92) arranged coaxially with the intermediate ring (2) and driven to rotate by the driving mechanism (5); the rotating ring (92) is located outside the magnetic ring (91); and two annular conductive sheets (93) of different diameters are provided through the rotating ring (92); A clamping ring (94) is capable of sliding along the axial direction of the rotating ring (92), and the clamping ring (94) and the rotating ring (92) remain relatively stationary in a circumferential direction; A magnetic block (95) having a coil disposed therein, the magnetic block (95) being slidably mounted on the two annular conductive sheets (93); the magnetic block (95) being located between the rotating ring (92) and the clamping ring (94); The energizing mechanism (96) is used to control the coil in the magnetic block (95) to reach a closed or energized state.

2. The lawn mower blade dynamic balance detection device according to claim 1, characterized in that: The energizing mechanism (96) comprises: A fixing frame (961) fixed on the bracket (1); A rotating shaft (962) is arranged on the fixing frame (961) and is capable of self-rotation and sliding along its axial direction; a conductive sheet 2 (963) and a conductive sheet 3 (964) are fixed to one end of the rotating shaft (962), and a conductive sheet 4 (965) and a conductive sheet 5 (966) are fixed to the other end of the rotating shaft (962); wherein the conductive sheet 2 (963) is electrically connected to the conductive sheet 4 (965), and the conductive sheet 3 (964) is electrically connected to the conductive sheet 5 (966); A sliding plate (967) is slidably mounted on the fixing frame (961); one end of the rotating shaft (962) is rotatably mounted on the sliding plate (967); two contact pieces (968) are mounted on the sliding plate (967); the two contact pieces (968) are respectively in contact with the conductive piece four (965) and the conductive piece five (966); A power mechanism 1 (969), one end of which is rotatably mounted on the fixing frame (961), and the other end of which is rotatably mounted on the sliding plate (967); When the coil inside the magnetic block (95) is closed, the conductive sheet 2 (963) contacts the two annular conductive sheets 1 (93); when the coil inside the magnetic block (95) is energized, the conductive sheet 2 (963) and the conductive sheet 3 (964) respectively abut against the two annular conductive sheets 1 (93).

3. The lawn mower blade dynamic balance detection device according to claim 1, characterized in that: The driving mechanism (5) comprises: a driving disk (51) rotatably mounted on the bracket (1), and the driving disk (51) and the intermediate ring (2) are coaxial; the driving disk (51) is fixedly connected to the rotating ring (92); A power assembly is fixed on the bracket (1) and is used to drive the driving disc (51) to rotate.

4. The lawn mower blade dynamic balance detection device according to claim 3, characterized in that: The power assembly comprises: A gear ring (52) coaxially fixed to the driving disc (51); A second power mechanism (53) is fixed on the bracket (1), and a gear (54) is fixed on the output shaft of the second power mechanism (53); The ring gear (52) is meshed with the gear (54).

5. The lawn mower blade dynamic balance detection device according to claim 3, characterized in that: The reset mechanism (7) comprises: An intermediate plate (71) located between the driving disc (51) and the intermediate ring (2); There are multiple telescopic rods (72) which are arranged in parallel; one end of the telescopic rod (72) is rotatably connected to the driving disk (51) via a ball (73), and the other end of the telescopic rod (72) is rotatably connected to the intermediate ring (2) via a ball (73); the middle part of the telescopic rod (72) is rotatably connected to the intermediate plate (71) via a ball (73); There are multiple elastic members one (74), one end of each elastic member one (74) is connected to the middle plate (71), and the other end is connected to the middle ring (2).

6. The lawn mower blade dynamic balance detection device according to claim 1, characterized in that: The horizontal support mechanism (6) comprises: A limiting ring (61) is fixed to the top of the bracket (1), and the limiting ring (61) is provided with an annular chamber; A plurality of balls (62) rotatably mounted on the top and bottom side walls of the annular chamber; The middle portion of the intermediate ring (2) extends outward to form an annular protrusion (63) located in the annular chamber, the inner diameter of the annular chamber is larger than the diameter of the annular protrusion (63), and the ball (62) rotatably supports the annular protrusion (63).

7. The lawn mower blade dynamic balance detection device according to claim 1, characterized in that: The clamp (4) comprises: A power mechanism three (41), fixed on the bracket (1); A circular plate (42) is slidably mounted in the middle ring (2) along the axial direction; A plurality of clamping claws (43) are slidably mounted on the circular plate (42) along a radial direction, and the clamping claws (43) are "L"-shaped; The second circular plate (44) is slidably mounted in the middle ring (2) along the axial direction, and the second circular plate (44) is located below the first circular plate (42); the top surface of the second circular plate (44) is an inverted cone surface (45), and the bottom end of the clamping claw (43) is slidably connected to the inverted cone surface (45); The second elastic member (46) is located between the first circular plate (42) and the second circular plate (44), one end of the second elastic member (46) is connected to the first circular plate (42), and the other end is connected to the top end of the second circular plate (44); An elastic member 3 (47), one end of which is connected to the bottom end of the circular plate 2 (44); A rotating disk (48) is coaxially arranged with the intermediate ring (2), and the rotating disk (48) is coaxially rotatably mounted on the output end of the power mechanism three (41); the other end of the elastic member three (47) is connected to the rotating disk (48).

8. The lawn mower blade dynamic balance detection device according to claim 7, characterized in that: The clamp (4) further comprises: A blocking ring (49) is fixed to the inner top of the middle ring (2) and is used to prevent the circular plate 1 (42) from being separated from the middle ring (2).

9. The lawn mower blade dynamic balance detection device according to claim 1, characterized in that: The detection mechanism (9) further comprises: A power mechanism four (97) fixed on the bracket (1); A lifting ring (98), the output end of the power mechanism four (97) being connected to the lifting ring (98); The clamping ring (94) is rotatably connected to the lifting ring (98).

10. The lawn mower blade dynamic balance detection device according to claim 9, characterized in that: The detection mechanism (9) further comprises: The limiting plate (99) is fixedly connected to the lifting ring (98), and the limiting plate (99) is slidably connected to the rotating ring (92).

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