Mower blade static balance detection device

Abstract

The present invention provides a lawn mower blade static balance detection device, comprising an equipment chassis, an operating support platform provided on the top of the equipment chassis, a lifting mechanism and a pressure detection mechanism provided on the operating support platform, and controllers of the lifting mechanism and the pressure detection mechanism are both provided inside the equipment chassis. When in use, a blade connecting frame that can rotate up and down is provided, and a rotatable transmission rod is provided at the end of the blade connecting frame, the two ends of the transmission rod are respectively connected to the blade connecting disk and the driven disk, and the blade connecting disk and the driven disk are respectively connected to the lawn mower blade and the transmission device, so that the lawn mower blade rotates at high speed. When the lawn mower blade is unbalanced, it will shake under the action of centrifugal force, thereby compressing the pressure sensor to generate data fluctuations. The amplitude of the data fluctuation can be used to conveniently judge whether the lawn mower blade is balanced and the amount of deviation.

Description

Technical Field

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

[0002] A lawn mower, also known as a weed cutter, lawn mower, or lawn trimmer, is a mechanical tool used to trim lawns and vegetation. It consists of a cutterhead, an engine, running wheels, a running mechanism, blades, handrails, and a control system. The cutterhead is mounted on the running wheels, which is then equipped with an engine. The blades are mounted on the engine's output shaft. The high-speed rotation of the engine significantly increases the blade's speed, saving workers time and manpower.

[0003] Lawn mower blades are mostly strip- or linear-shaped, and they mow lawns and vegetation through the cutting force generated by high-speed rotation. Therefore, they must be perfectly balanced. Otherwise, high-speed rotation will generate significant vibration, which can lead to increased wear on the equipment, blade damage, and an uneven cut surface.

[0004] Therefore, a balance test is required when the lawn mower leaves the factory or after long-term use to avoid damage to the equipment due to blade imbalance.

[0005] Existing methods for checking blade static balance primarily rely on manual visual inspection. The typical blade imbalance tolerance is 10 g / cm (0.001 N / m), requiring very high accuracy relative to the blade's total weight (0.3-1 kg). Manual inspection is difficult, leads to large errors, and low efficiency. Torque sensors can also be used. However, these sensors suffer from limited measurement accuracy, fragility, and high maintenance costs. Consequently, existing technologies are inconvenient for lawn mower blade static balance testing.

[0006] To this end, the present application proposes a lawn mower blade static balance detection device for improving the convenience of lawn mower blade static balance detection. Summary of the Invention

[0007] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a lawn mower blade static balance detection device for solving the problem of inconvenient lawn mower blade detection mentioned in the prior art.

[0008] To achieve the above-mentioned and other related objects, the present invention provides a lawn mower blade static balance detection device, comprising a device chassis, an operating support platform disposed on the top of the device chassis, a lifting mechanism and a pressure detection mechanism disposed on the operating support platform, and controllers for the lifting mechanism and the pressure detection mechanism are both disposed inside the device chassis;

[0009] A blade fixing mechanism is installed on the lifting mechanism, and the blade fixing mechanism can rotate up and down with the connection as the axis. The blade fixing mechanism is overlapped on the pressure detection mechanism to apply pressure to the pressure detection mechanism. The blade fixing mechanism is used to connect and install the lawn mower blade. The operating support platform is also equipped with a blade transmission mechanism, which is used to drive the lawn mower blade to rotate;

[0010] The blade fixing mechanism includes a blade connecting frame, one end of the blade connecting frame is hinged to the lifting mechanism so that the blade connecting frame can rotate up and down, and a rotatable transmission rod is provided at the end of the blade connecting frame away from the lifting mechanism, and the outer surface of the transmission rod is in contact with the sensing end of the pressure detection mechanism. A blade connecting disk is provided at one end of the transmission rod, and the blade connecting disk is used to install the lawn mower blade. The other end of the transmission rod is provided with a driven disk, and the driven disk is connected to the output end of the blade transmission mechanism.

[0011] Preferably, the top cross-section of the blade connecting frame is a U-shaped fork structure, and the transmission rod passes through both sides of the blade connecting frame at equal distances from the axis of the blade connecting frame.

[0012] Preferably, the lifting mechanism includes a lifting support frame, which is U-shaped when viewed from above, and a slider driving rod and a limiting traction rod are arranged in parallel inside the lifting support frame;

[0013] The bottom of the slider driving rod extends to the interior of the equipment chassis, and the bottom of the limiting traction rod is fixed to the top of the operation support platform;

[0014] The outer surface of the slider driving rod is threadedly connected to a lifting slider, and the lifting slider is penetrated by a limiting traction rod;

[0015] The blade connecting frame is hinged on the side surface of the lifting slide block.

[0016] Preferably, the outer surface of the lifting slider is in contact with the inner surface of the lifting support frame.

[0017] Preferably, the pressure detection mechanism includes a telescopic device, the bottom of which extends to the interior of the device chassis, the top of which is plugged with a telescopic rod, the telescopic rod is extended and retracted inside the telescopic device under the action of pressure, and the upper end of the telescopic rod is provided with a pressure sensor;

[0018] The top of the pressure sensor contacts the outer surface of the transmission rod.

[0019] Preferably, a stabilizer is sleeved on the outer surface of the telescopic rod, and the bottom of the stabilizer is fixedly connected to the top of the operation support platform.

[0020] Preferably, the telescopic rod includes a sensor driving rod, a piston rod is provided at the connecting end of the sensor driving rod and the telescoping device, a pressure sensor mounting hole is provided at the other end of the sensor driving rod, and the pressure sensor is detachably mounted inside the pressure sensor mounting hole;

[0021] A wiring hole is provided at the bottom of the pressure sensor mounting hole, and a wire groove is provided on the outer surface of the sensor driving rod, wherein the wire groove is connected to the wiring hole;

[0022] The wires of the pressure sensor extend into the interior of the device chassis through the wiring holes and the wire troughs respectively.

[0023] Preferably, the blade transmission mechanism includes a motor support frame and a transmission belt, the motor support frame is installed on the side of the lifting mechanism, a transmission motor is installed on the top of the motor support frame, and the transmission belt is respectively connected to the output end of the transmission motor and the driven disk;

[0024] The side surface of the lifting support frame is provided with a plurality of threaded holes at equal intervals, and the motor support frame can be installed with different threaded holes to adjust the installation height.

[0025] Preferably, a limiter mounting frame is provided on the top of the blade connecting frame;

[0026] The limiter mounting frame is threadedly connected to a limit mechanism, and the distance between the outer surface of the limit mechanism and the outer surface of the lifting support frame is adjustable.

[0027] Preferably, the limiting mechanism includes a threaded rod, which is threadedly connected to the limiter mounting bracket, and an interference block is provided at the end of the threaded rod. The outer contour of the interference block is an irregular polygon, and an adjustment head is provided at the end of the interference block.

[0028] As described above, the lawn mower blade static balance detection device of the present invention has the following beneficial effects:

[0029] The present invention provides a blade connecting frame that can rotate up and down, and provides a rotatable transmission rod at the end of the blade connecting frame, the two ends of the transmission rod are respectively connected to the blade connecting disk and the driven disk, and the blade connecting disk and the driven disk are respectively connected to the lawn mower blade and the transmission device, so that the lawn mower blade rotates at high speed. When the lawn mower blade is unbalanced, it will shake under the action of centrifugal force, thereby compressing the pressure sensor to produce data fluctuations. The amplitude of the data fluctuation can be used to conveniently judge whether the lawn mower blade is balanced and the amount of deviation, thereby achieving the effect of facilitating static balancing of the lawn mower blade.

[0030] The present invention provides a lifting support frame, and provides a slider driving rod inside the lifting support frame to drive the lifting slider to rise and fall. At the same time, the telescopic device and the telescopic rod cooperate to drive the pressure sensor to rise and fall, so as to change the height of the blade connecting frame, so that lawn mower blades of different sizes can be installed on the blade connecting plate, avoiding the interference of the lawn mower blade that is too large in size with the operating support platform, thereby achieving the effect of improving the scope of application.

[0031] At the same time, a limiting traction rod is provided inside the lifting support frame, which further limits the lifting slider through the limiting traction rod, and makes the outer surface of the lifting slider fit with the inner wall of the lifting support frame, which can improve the lifting stability of the lifting slider. When the lawn mower blade rotates at high speed, the stability of the lifting slider can be improved, avoiding the vibration of the lifting slider and interfering with the detection data, thereby improving the accuracy of the detection data.

[0032] The present invention provides a plurality of threaded holes on the side of the lifting support frame, and enables the motor support frame to be connected to the threaded holes at different heights. When the lifting range of the blade connecting frame is large and the transmission belt is not long enough, the installation position of the motor support frame can be adjusted, thereby achieving the effect of further improving the adaptability of the device.

[0033] The present invention installs a limiter mounting frame on the top of the blade connecting frame, and threadedly connects a threaded rod in the limiter mounting frame, and at the same time provides an interference block at the end of the threaded rod. By rotating the threaded rod, different surfaces of the interference block are made to face the lifting support frame to change the distance between the interference block and the lifting support frame, thereby changing the amplitude of the upward vibration of the blade connecting frame or the upward rotation of the stationary blade connecting frame, so as to reduce the impact force of the transmission rod on the pressure sensor and improve the service life of the pressure sensor.

[0034] The present invention provides a pressure sensor mounting hole at the end of the sensor driving rod for mounting the pressure sensor, and allows the line of the pressure sensor to extend to the interior of the equipment chassis through the wiring hole and the wire trough, so that the pressure sensor can be easily disassembled for replacement and maintenance, and can prevent the line of the pressure sensor from being damaged by the stabilizer when the sensor driving rod is raised or lowered.

[0035] The present invention provides a stabilizer on the outer surface of the telescopic rod to support and protect the telescopic rod, thereby preventing the telescopic rod from shaking due to the power of the lawn mower blade vibrating, and preventing the telescopic rod from applying pressure to the telescope due to the lever principle, thereby preventing the telescopic rod from being damaged.

[0036] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 Shown is a front view of the structure of the present invention.

[0038] Figure 2 Shown is a top view of the structure of the present invention.

[0039] Figure 3 Shown is a schematic structural diagram of the present invention.

[0040] Figure 4 Shown as the present invention Figure 3 A magnified schematic diagram of the structure at point A.

[0041] Figure 5 Shown is a schematic diagram of the connection between the lifting slider and the blade connecting frame of the present invention.

[0042] Figure 6 Shown is a schematic structural diagram of the transmission rod of the present invention.

[0043] Figure 7 Shown is a structural schematic diagram of the pressure detection structure of the present invention.

[0044] Figure 8 Shown is a structural cross-sectional view of the pressure detection structure of the present invention.

[0045] Figure 9 Shown is a schematic structural diagram of the telescopic rod of the present invention.

[0046] Figure 10 Shown is a structural cross-sectional view of the telescopic rod of the present invention.

[0047] Figure 11 Shown is a schematic diagram of the installation of the motor support frame of the present invention.

[0048] Figure 12 Shown is a schematic structural diagram of the limiting mechanism of the present invention.

[0049] Component number description:

[0050] 1. Equipment chassis;

[0051] 2. Operation support table;

[0052] 3. Lifting mechanism; 31. Lifting support frame; 32. Slider driving rod; 33. Limiting traction rod; 34. Lifting slider;

[0053] 4. Blade fixing mechanism; 41. Blade connecting frame; 42. Transmission rod; 43. Blade connecting plate; 44. Driven plate; 45. Stopper mounting frame;

[0054] 5. Pressure detection mechanism; 51. Telescopic device; 52. Telescopic rod; 521. Sensor drive rod; 522. Piston rod; 523. Pressure sensor mounting hole; 524. Wiring hole; 525. Wire guide; 53. Pressure sensor; 54. Stabilizer;

[0055] 6. Blade transmission mechanism; 61. Motor support frame; 62. Transmission motor; 63. Transmission belt;

[0056] 7. Limiting mechanism; 71. Threaded rod; 72. Interference block; 73. Adjusting head. DETAILED DESCRIPTION

[0057] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0058] See also Figures 1 to 12 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0059] like Figure 1-Figure 3 and Figure 6 As shown, the present invention provides a lawn mower blade static balance detection device, including an equipment chassis 1, the interior of the equipment chassis 1 is provided with electrical equipment, a power supply device and a signal transmission device that are compatible with the device. A display device and a control device connected to the equipment chassis 1 are also provided on the outside of the device. The electrical equipment inside the equipment chassis 1 is controlled by the control device, and the detected data is transmitted to the display device through the signal transmission device for display. An operation support platform 2 is provided on the top of the equipment chassis 1, and the main body of the operation support platform 2 is a solid body to improve stability and support. A wiring groove and an equipment installation slot are provided in the middle of the solid body to facilitate the installation of equipment and wiring. A lifting mechanism 3 and a pressure detection mechanism 5 are respectively provided on the operation support platform 2, and the controllers of the lifting mechanism 3 and the pressure detection mechanism 5 are both provided inside the equipment chassis 1, so that the lifting mechanism 3 and the pressure detection mechanism 5 can be controlled by external equipment.

[0060] A blade fixing mechanism 4 is mounted on the lifting mechanism 3. The blade fixing mechanism 4 can rotate up and down about its connection point. The blade fixing mechanism 4 is attached to the pressure detection mechanism 5, applying pressure to the pressure detection mechanism 5. The blade fixing mechanism 4 is used to connect and mount the mower blade. A blade transmission mechanism 6 is also mounted on the operating support platform 2, driving the mower blade in rotation. The pressure detection mechanism 5 generates a corresponding pressure band line based on the magnitude of the pressure sensed, and displays the band line on a display. The compliance of the mower blade is determined by the amplitude and spacing of the band line. When the mower blade rotates at high speed, if the mower blade is qualified, the pressure band line it generates will have a small amplitude and uniform spacing. If the mower blade is unqualified, the centrifugal force will cause the blade to vibrate violently. In this case, the pressure data monitored by the pressure detection mechanism 5 will fluctuate significantly, and the amplitude of the fluctuation will be relatively chaotic.

[0061] The blade securing mechanism 4 includes a blade attachment frame 41, one end of which is hingedly connected to the lifting mechanism 3, allowing it to rotate up and down. When the mower blade rotates at high speed and vibrates, the kinetic energy causes the blade attachment frame 41 to float up and down, thereby generating greater pressure on the pressure detection mechanism 5. A rotatable transmission rod 42 is provided at the end of the blade attachment frame 41, away from the lifting mechanism 3. The outer surface of the transmission rod 42 contacts the sensing end of the pressure detection mechanism 5. The pressure generated by the vibration of the blade attachment frame 41 is transmitted through the transmission rod 42 to the pressure detection mechanism 5, where it is captured and generated as real-time pressure data. A blade connection plate 43 is provided at one end of the transmission rod 42. The axis of the blade connection plate 43 is provided with a hole for mounting the mower blade. The blade connection plate 43 cooperates with bolts to mount the mower blade. A driven plate 44 is provided at the other end of the transmission rod 42, which is connected to the output end of the blade transmission mechanism 6. When the blade transmission mechanism 6 transmits power to the driven disc 44, the power drives the transmission rod 42 to rotate, thereby causing the lawn mower blade to rotate at high speed.

[0062] like Figure 2 、 Figure 3 and Figure 5 As shown, in some embodiments of the present invention, the blade connector 41 has a U-shaped cross-section when viewed from above. The transmission rod 42 extends equidistantly from the axis of the blade connector 41 through both sides of the blade connector 41. This allows the axis of the transmission rod 42 to contact the end of the pressure detection mechanism 5, thereby improving data measurement accuracy. This also effectively reduces the weight of the blade connector 41.

[0063] like Figure 2 and Figure 3As shown, in some embodiments, the lifting mechanism 3 of the present invention includes a lifting support frame 31, which is U-shaped when viewed from above, so that the middle part of the lifting support frame 31 is hollow. A slider drive rod 32 and a limit traction rod 33 are arranged in parallel inside the lifting support frame 31. The outer surface of the slider drive rod 32 is provided with an external thread, and a limit is provided on the top. The bottom of the slider drive rod 32 extends to the inside of the device chassis 1, so that it is driven by a driving device arranged in the device chassis 1. The outer surface of the limit traction rod 33 is a smooth surface, and the top of the limit traction rod 33 is flush with the top of the slider drive rod 32. The bottom of the limit traction rod 33 is fixed to the top of the operating support platform 2, so that the limit traction rod 33 remains parallel to the slider drive rod 32.

[0064] The outer surface of the slider drive rod 32 is threadedly connected to a lifting slider 34. When the slider drive rod 32 rotates, the lifting force provided by the thread drives the lifting slider 34 to be raised and lowered. At the same time, the lifting slider 34 is penetrated by the limiting traction rod 33, thereby further supporting the lifting slider 34 and keeping the lifting slider 34 stable during the lifting process. When the blade connecting frame 41 shakes, the lifting slider 34 remains relatively stationary due to the two-point support. The blade connecting frame 41 is hinged to the side of the lifting slider 34, so that the blade connecting frame 41 can rise and fall with the lifting of the lifting slider 34. At the same time, the blade connecting frame 41 is installed in a hinged manner so that the blade connecting frame 41 can swing up and down after being subjected to force.

[0065] like Figure 4 As shown, in some embodiments, the outer surface of the lifting slider 34 of the present invention is fitted with the interior of the lifting support frame 31, and the outer surface of the lifting slider 34 is covered and constrained by the inner wall of the lifting support frame 31, thereby effectively improving the stability of the lifting slider 34 in the lifting or stationary state.

[0066] like Figure 3 and Figure 7As shown, in some embodiments, the pressure detection mechanism 5 of the present invention includes a telescope 51, the bottom of which extends to the interior of the equipment chassis 1. A telescopic rod 52 is connected to the top of the telescope 51. The telescope 51 is a pneumatic or hydraulic drive device, and the telescopic rod 52 is extended and retracted inside the telescope 51 under the action of gas pressure or liquid pressure. For its specific working principle and structure, please refer to the hydraulic cylinder. A pressure sensor 53 is provided at the upper end of the telescopic rod 52, and the top of the pressure sensor 53 is in contact with the outer surface of the transmission rod 42. The top of the pressure sensor 53 is set as an arc-shaped surface, and the curvature of the arc-shaped surface is adapted to the curvature of the outer surface of the transmission rod 42 to increase the contact area between the end of the pressure sensor 53 and the transmission rod 42. When the lawn mower blade rotates at high speed, if the blade is qualified, the centrifugal force it generates is stable and uniform, so that the pressure applied by the transmission rod 42 to the pressure sensor 53 is uniform and stable. Otherwise, the centrifugal force generated by the blade will deviate and vibrate. As the amplitude of the vibration increases, the pressure applied by the transmission rod 42 to the pressure sensor 53 will fluctuate greatly.

[0067] like Figure 3 and Figure 8 As shown, in some embodiments of the present invention, a stabilizer 54 is sleeved on the outer surface of the telescopic rod 52, and the bottom of the stabilizer 54 is fixedly connected to the top of the operating support platform 2. Because the pressure sensor 53 is arranged at the top of the telescopic rod 52, when the pressure sensor 53 is subjected to centrifugal pressure, the pressure sensor 53 will not only be subjected to vertical pressure but also to some horizontal pressure. At this time, the horizontal pressure will act on the telescopic rod 52, thereby exerting pressure on the connection between the telescope 51 and the telescopic rod 52 through the principle of leverage. By covering the outer surface of the telescopic rod 52 with the stabilizer 54, the pressure of the telescopic rod 52 acts on the stabilizer 54, thereby preventing damage to the cylinder of the telescope 51.

[0068] like Figure 9 and Figure 10 As shown, in some embodiments, the telescopic rod 52 of the present invention includes a sensor drive rod 521. A piston rod 522 is provided at the connection end between the sensor drive rod 521 and the telescoping member 51. The outer surface of the piston rod 522 is tightly connected to the inner wall of the telescoping member 51, forming a sealed cavity within the telescoping member 51. When pressure builds up inside the telescoping member 51, the piston rod 522 is pushed, driving the sensor drive rod 521 upward. A pressure sensor mounting hole 523 is provided at the other end of the sensor drive rod 521. The pressure sensor 53 is detachably mounted within the mounting hole 523. This facilitates maintenance and replacement of the consumable pressure sensor 53.

[0069] A wiring hole 524 is provided at the bottom of the pressure sensor mounting hole 523, and a wire groove 525 is provided on the outer surface of the sensor drive rod 521. The wire groove 525 extends through the wiring hole 524. The wires of the pressure sensor 53 extend into the interior of the device chassis 1 through the wiring hole 524 and the wire groove 525, respectively. This facilitates the entry of the pressure sensor 53 wiring into the device chassis 1 and improves the aesthetics. Furthermore, when the sensor drive rod 521 rises, the exposed wires are forced into the wire groove 525 under pressure, preventing damage to the wires caused by pressure from the stabilizer 54.

[0070] like Figure 3 and Figure 12 As shown, in some embodiments, the blade drive mechanism 6 of the present invention includes a motor support frame 61 and a transmission belt 63. The motor support frame 61 is U-shaped and is mounted on the side of the lifting mechanism 3. A transmission motor 62 is mounted on the top of the motor support frame 61. The transmission belt 63 is connected to the output end of the transmission motor 62 and the driven disc 44, respectively, thereby transmitting power to the drive rod 42, enabling the mower blades to rotate at high speed and generate centrifugal force. When the blade connection frame 41 vibrates under the centrifugal force of the mower blades, the total distance between the driven disc 44 and the output shaft of the transmission motor 62 remains unchanged. Therefore, the transmission belt 63 vibrates with the output shaft of the transmission motor 62 as its axis, and the other end vibrates with the vibration of the driven disc 44. Although the transmission motor 62 vibrates during operation, the amplitude and frequency of the vibration are stable and regular. Therefore, the pressure generated by the vibration of the transmission motor 62 can be pre-treated to reduce noise. Of course, because the vibration amplitude of the transmission motor 62 is relatively stable, leaving it untreated will not significantly affect the static balance test of the mower blades.

[0071] The side of the lift support frame 31 is equidistantly provided with threaded holes. The motor support frame 61 can be installed in different threaded holes to adjust the installation height. If the lift slider 34 is raised or lowered excessively, the length of the transmission motor 62 may no longer allow it to connect to the driven disk 44. In this case, the height of the motor support frame 61 can be adjusted to ensure that the transmission motor 62 and the driven disk 44 remain compatible.

[0072] like Figure 4 and Figure 5 As shown, in some embodiments of the present invention, a limiter mounting bracket 45 is provided on the top of the blade connecting bracket 41. A limit mechanism 7 is threadedly connected to the limiter mounting bracket 45. The distance between the outer surface of the limit mechanism 7 and the outer surface of the lifting support bracket 31 is adjustable. By adjusting the distance between the limit mechanism 7 and the outer surface of the lifting support bracket 31, the upward rotation range of the blade connecting bracket 41 can be controlled to reduce excessive impact force exerted on the transmission rod 42 on the pressure sensor 53 during the descent of the blade connecting bracket 41, thereby extending the service life of the pressure sensor 53.

[0073] like Figure 12 As shown, in some embodiments, the limiting mechanism 7 of the present invention includes a threaded rod 71. The threaded rod 71 is threadedly connected to the limiter mounting bracket 45. An interference block 72 is provided at the end of the threaded rod 71, and the outer contour of the interference block 72 is an irregular polygon. The interference block 72 can be rotated by rotating the threaded rod 71, so that different sides of the interference block 72 face the lifting support frame 31 to change the distance between the interference block 72 and the lifting support frame 31. An adjustment head 73 is provided at the end of the interference block 72, and the outer surface of the adjustment head 73 is an irregular structure. The adjustment head 73 is used to facilitate the operator to rotate the threaded rod 71 to adjust the interference block 72.

[0074] In summary, the lawn mower blade static balance detection device of the present invention is provided with a blade connecting frame 41 that can be rotated up and down, and a rotatable transmission rod 42 is provided at the end of the blade connecting frame 41, and the two ends of the transmission rod 42 are respectively connected to the blade connecting plate 43 and the driven plate 44, and the blade connecting plate 43 and the driven plate 44 are respectively connected to the lawn mower blade and the transmission device, so that the lawn mower blade rotates at high speed. When the lawn mower blade is unbalanced, it will shake under the action of centrifugal force, thereby compressing the pressure sensor 53 to produce data fluctuations. The amplitude of the data fluctuation can be used to conveniently judge whether the lawn mower blade is balanced and the amount of deviation, thereby achieving the effect of facilitating the static balance of the lawn mower blade.

[0075] The present invention provides a lifting support frame 31, and provides a slider driving rod 32 inside the lifting support frame 31 to drive the lifting slider 34 to move up and down. At the same time, the telescopic device 51 and the telescopic rod 52 cooperate to drive the pressure sensor 53 to move up and down to change the height of the blade connecting frame 41, so that different sizes of lawn mower blades can be installed on the blade connecting plate 43, avoiding the interference of excessive size of the lawn mower blade with the operating support platform 2, thereby achieving the effect of improving the scope of application.

[0076] At the same time, a limiting traction rod 33 is provided inside the lifting support frame 31, and the lifting slider 34 is further limited by the limiting traction rod 33, and the outer surface of the lifting slider 34 is fit with the inner wall of the lifting support frame 31, which can improve the stability of the lifting slider 34. When the lawn mower blade rotates at high speed, the stability of the lifting slider 34 can be improved, and the vibration of the lifting slider 34 can be avoided to interfere with the detection data, thereby improving the accuracy of the detection data.

[0077] The present invention sets a plurality of threaded holes on the side of the lifting support frame 31, and enables the motor support frame 61 to be connected to the threaded holes at different heights. When the lifting range of the blade connecting frame 41 is large and the transmission belt 63 is not long enough, the installation position of the motor support frame 61 can be adjusted, thereby achieving the effect of further improving the adaptability of the device.

[0078] The present invention installs a limiter mounting frame 45 on the top of the blade connecting frame 41, and threadedly connects a threaded rod 71 in the limiter mounting frame 45, and at the same time provides a resistance block 72 at the end of the threaded rod 71. By rotating the threaded rod 71, different surfaces of the resistance block 72 face the lifting support frame 31 to change the distance between the resistance block 72 and the lifting support frame 31, thereby changing the amplitude of the upward vibration of the blade connecting frame 41 or the upward rotation of the stationary blade connecting frame 41, so as to reduce the impact force of the transmission rod 42 on the pressure sensor 53, thereby improving the service life of the pressure sensor 53.

[0079] The present invention provides a pressure sensor mounting hole 523 at the end of the sensor driving rod 521 for mounting the pressure sensor 53, and extends the line of the pressure sensor 53 to the interior of the equipment chassis 1 through the wiring hole 524 and the wire groove 525, so that the pressure sensor 53 can be easily disassembled for replacement and maintenance, and when the sensor driving rod 521 is raised or lowered, the line of the pressure sensor 53 can be prevented from being damaged by the stabilizer 54.

[0080] The present invention provides a stabilizer 54 on the outer surface of the telescopic rod 52 to support and protect the telescopic rod 52, thereby preventing the telescopic rod 52 from shaking due to the power of the lawn mower blade vibrating, and preventing the telescopic rod 52 from applying pressure on the telescope 51 due to the lever principle, thereby preventing the telescopic device 51 from being damaged.

[0081] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0082] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A lawn mower blade static balance detection device, characterized in that: The device comprises a device chassis (1), wherein an operation support platform (2) is provided on the top of the device chassis (1), a lifting mechanism (3) and a pressure detection mechanism (5) are respectively provided on the operation support platform (2), and controllers of the lifting mechanism (3) and the pressure detection mechanism (5) are both provided inside the device chassis (1); A blade fixing mechanism (4) is installed on the lifting mechanism (3), and the blade fixing mechanism (4) can rotate up and down with the connection as the axis. The blade fixing mechanism (4) is overlapped on the pressure detection mechanism (5) to apply pressure to the pressure detection mechanism (5). The blade fixing mechanism (4) is used to connect and install the lawn mower blade. A blade transmission mechanism (6) is also installed on the operating support platform (2), and the blade transmission mechanism (6) is used to drive the lawn mower blade to rotate; The blade fixing mechanism (4) comprises a blade connecting frame (41), one end of the blade connecting frame (41) is hinged to the lifting mechanism (3), so that the blade connecting frame (41) can rotate up and down, and the end of the blade connecting frame (41) away from the lifting mechanism (3) is provided with a rotatable transmission rod (42), the outer surface of the transmission rod (42) contacts the sensing end of the pressure detection mechanism (5), one end of the transmission rod (42) is provided with a blade connecting disc (43), and the blade connecting disc (43) is used to install the lawn mower blade, and the other end of the transmission rod (42) is provided with a driven disc (44), and the driven disc (44) is connected to the output end of the blade transmission mechanism (6).

2. The lawn mower blade static balance detection device according to claim 1, characterized in that: The blade connecting frame (41) has a U-shaped fork structure in a top view cross-section, and the transmission rod (42) extends from the axis of the blade connecting frame (41) through both sides of the blade connecting frame (41) at equal distances.

3. The lawn mower blade static balance detection device according to claim 1, characterized in that: The lifting mechanism (3) comprises a lifting support frame (31), the lifting support frame (31) is U-shaped when viewed from above, and a slider driving rod (32) and a limiting traction rod (33) are arranged in parallel inside the lifting support frame (31); The bottom of the slider driving rod (32) extends to the inside of the equipment chassis (1), and the bottom of the limiting traction rod (33) is fixed to the top of the operating support platform (2); The outer surface of the slider driving rod (32) is threadedly connected to a lifting slider (34), and the lifting slider (34) is penetrated by a limiting traction rod (33); The blade connecting frame (41) is hinged to the side of the lifting slider (34).

4. The lawn mower blade static balance detection device according to claim 3, characterized in that: The outer surface of the lifting slider (34) fits in contact with the interior of the lifting support frame (31).

5. The lawn mower blade static balance detection device according to claim 2, characterized in that: The pressure detection mechanism (5) includes a telescopic device (51), the bottom of the telescopic device (51) extends to the inside of the device chassis (1), the top of the telescopic device (51) is plugged with a telescopic rod (52), the telescopic rod (52) is extended and retracted inside the telescopic device (51) under the action of pressure, and the upper end of the telescopic rod (52) is provided with a pressure sensor (53); The top of the pressure sensor (53) contacts the outer surface of the transmission rod (42).

6. The lawn mower blade static balance detection device according to claim 5, characterized in that: The outer surface of the telescopic rod (52) is sleeved with a stabilizer (54), and the bottom of the stabilizer (54) is fixedly connected to the top of the operating support platform (2).

7. The lawn mower blade static balance detection device according to claim 6, characterized in that: The telescopic rod (52) comprises a sensor driving rod (521), a piston rod (522) is provided at the connecting end of the sensor driving rod (521) and the telescoping device (51), a pressure sensor mounting hole (523) is provided at the other end of the sensor driving rod (521), and the pressure sensor (53) is detachably mounted inside the pressure sensor mounting hole (523); A wiring hole (524) is provided at the bottom of the pressure sensor mounting hole (523), and a wire groove (525) is provided on the outer surface of the sensor driving rod (521), wherein the wire groove (525) is connected to the wiring hole (524); The wires of the pressure sensor (53) extend into the interior of the device chassis (1) through the wiring hole (524) and the wire groove (525).

8. The lawn mower blade static balance detection device according to claim 3, characterized in that: The blade transmission mechanism (6) comprises a motor support frame (61) and a transmission belt (63), wherein the motor support frame (61) is mounted on the side of the lifting mechanism (3), a transmission motor (62) is mounted on the top of the motor support frame (61), and the transmission belt (63) is connected to the output end of the transmission motor (62) and the driven disc (44) respectively; A plurality of threaded holes are equidistantly arranged on the side of the lifting support frame (31), and the motor support frame (61) can be installed with different threaded holes to adjust the installation height.

9. The lawn mower blade static balance detection device according to claim 3, characterized in that: A limiter mounting frame (45) is provided on the top of the blade connecting frame (41); The limiter mounting frame (45) is threadedly connected to a limit mechanism (7), and the distance between the outer surface of the limit mechanism (7) and the outer surface of the lifting support frame (31) is adjustable.

10. The lawn mower blade static balance detection device according to claim 9, characterized in that: The limiting mechanism (7) comprises a threaded rod (71), the threaded rod (71) being threadedly connected to the limiter mounting frame (45), the end of the threaded rod (71) being provided with a resistance block (72), the outer contour of the resistance block (72) being an irregular polygon, and the end of the resistance block (72) being provided with an adjustment head (73).

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