Lawn mower aluminum disc center shaft run-out detection mechanism

Abstract

The utility model discloses a runout detection mechanism for a center shaft of an aluminum disc of a hay mower, which comprises a base, and supporting legs are fixedly mounted at the lower end of the base; a fixed plate is fixedly mounted at the upper end of the base, a servo motor is fixedly mounted on the outer side of the fixed plate, an incongruous threaded rod is fixedly mounted at the output end of the servo motor, a threaded connector is connected to the outer side of the incongruous threaded rod, a push plate is fixedly mounted on the outer side of the threaded connector, and a guide rod is fixedly mounted on the inner side of the fixed plate. When the center shaft needs to be detected, the disc bodies at the two ends of the shaft body are placed at the height flush with the clamping sleeve, then the servo motor is operated, the output end of the servo motor drives the incongruous threaded rod to rotate, the incongruous threaded rod rotates to drive the threaded connectors in threaded connection with the two ends to move oppositely, and the center shaft is detected. And along with the opposite movement of the two groups of threaded connectors, the clamping sleeve on the inner side of the push plate is clamped on the outer side of the disc body, so that the disc body is fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of central axis detection, in particular to a central axis runout detection mechanism for an aluminum plate of a lawn mower. Background Art

[0002] The aluminum center shaft of the lawn mower is a key component in the lawn mower. It is responsible for supporting and driving the aluminum disk to rotate, thereby completing the mowing task. During the operation of the lawn mower, the aluminum center shaft is subjected to continuous rotational force and vibration. Therefore, its durability and stability are crucial to the overall performance and service life of the lawn mower. Its performance needs to be tested after production.

[0003] A vibration detection device with application number CN202223346469.X includes a main body support mechanism, a drive placement mechanism and an annular detection mechanism, wherein the top side of the main body support mechanism is provided with a drive placement mechanism, and the other side of the top of the main body support mechanism is provided with an annular detection mechanism. When the vibration detection device is used for detection, the other end of the disk shaft is first inserted into the central shaft frame and then fixed. After the fixing is completed, the disk shaft is rotated by a motor. At this time, one end of the disk shaft is in the central internal position of the detection ring frame. The radial angle of rotation of the entire shaft body can be detected by two sets of distance measuring sensors distributed around the inner wall of the detection ring frame. The distance measuring data of each angle of the rotating disk shaft is changed and recorded by the sensor, and the data is compared and analyzed to obtain the purpose of detecting whether the vibration rate of the disk shaft is qualified, and the detection process is completed. In this way, the stability of the aluminum rod disk shaft in use is ensured, and the device has a simple structure and convenient detection operation.

[0004] When the device is testing, the other end of the disk shaft is first inserted into the central shaft frame and then fixed. After the fixation is completed, it is rotated by a motor to drive the central shaft for rotation testing. However, the mounting frames at both ends of the device are fixedly installed. When testing the central shaft, only a certain length of the shaft can be tested, which results in a small range of use of the mechanism.

[0005] In view of the above problems, it is urgent to carry out innovative design based on the original lawn mower aluminum disc center shaft runout detection mechanism. Utility Model Content

[0006] The purpose of the utility model is to provide a lawn mower aluminum disk central axis runout detection mechanism to solve the problem that the mounting frames at both ends of the device proposed in the above background technology are fixedly installed, and when the central axis is detected, only a certain length of the axis can be detected, resulting in a small range of use of the mechanism.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lawn mower aluminum plate center axis runout detection mechanism, comprising a base, and a support leg is fixedly installed at the lower end of the base;

[0008] It also includes: a fixing plate is fixedly installed on the upper end of the base, and a servo motor is fixedly installed on the outside of the fixing plate, a different-direction threaded rod is fixedly installed on the output end of the servo motor, and a threaded connector is connected to the outside of the different-direction threaded rod, a push plate is fixedly installed on the outside of the threaded connector, a guide rod is fixedly installed on the inside of the fixing plate, and a guide block is nested on the outside of the guide rod, and the guide block is fixedly installed on the bottom of the push plate, a driving motor is fixedly installed on the outside of the push plate, and a ferrule is fixedly installed on the output end of the driving motor, a disk body is arranged on the inside of the ferrule, and a shaft body is connected between the disk bodies at both ends.

[0009] Preferably, the threaded connector is threadedly connected to the anisotropic threaded rod through a threaded hole opened on the inner side, and two groups of threaded connectors are symmetrically arranged about the midpoint of the anisotropic threaded rod; this structure can drive the threaded connectors with threaded connections at both ends to move toward or in the opposite direction through the rotation of the anisotropic threaded rod.

[0010] Preferably, the ferrules are arranged in two groups symmetrically about the midpoint of the base, and the shape of the ferrules is consistent with the shape of the disc body; this structure in which the shape of the ferrules is consistent with the shape of the disc body can allow the disc body to be nested inside the ferrules.

[0011] Preferably, a support frame is fixedly installed on the upper end of the base, and the support frame presents an inverted "L" shape structure when viewed from the side, a display screen is fixedly installed on the upper end of the support frame, and a control module is fixedly installed on the upper end of the support frame; this structure displays the operation status and detection structure of the mechanism through the display screen, thereby improving the ease of use of the mechanism.

[0012] Preferably, a through groove is opened on the inner side of the support frame, and a measuring rod passes through the inner side of the through groove, a pressure sensor is fixedly installed on the tail end of the measuring rod, and the pressure sensor and the shaft body are distributed in front and back correspondence; this mechanism can detect the vibration range of the shaft body through the pressure sensor.

[0013] Preferably, the inner side of the measuring rod is provided with slots at equal intervals, and the inner side of the slot is connected with a clamping rod; this structure can fix the measuring rod to the inner side of the support frame through the clamping of the clamping rod and the slot.

[0014] Preferably, a fixed block is fixedly installed on the outside of the support frame, and a telescopic spring is fixedly installed on the outside of the fixed block. The tail end of the telescopic spring is fixedly connected to a clamping rod, and the clamping rod passes through the inside of the fixed block; this structure can reset the clamping rod by itself through the elastic force of the telescopic spring.

[0015] Compared with the prior art, the utility model has the beneficial effect that the lawn mower aluminum plate central axis runout detection mechanism is provided with:

[0016] 1. A position adjustment structure is provided. When the central axis needs to be inspected, the discs at both ends of the shaft are first placed at a height flush with the ferrule, and then the servo motor is operated. The output end of the servo motor drives the counter-rotating threaded rod to rotate. The rotation of the counter-rotating threaded rod drives the threaded connectors at both ends to move toward each other. As the two sets of threaded connectors move toward each other, the ferrule on the inner side of the push plate is engaged with the outer side of the disc to fix the disc;

[0017] Furthermore, when the push plate slides left and right, the guide block at the bottom thereof will slide along the outer side of the guide rod, and the push plate is limited in angle by the sliding of the guide block on the outer side of the guide rod;

[0018] Furthermore, when the discs at both ends of the shaft are fixed, the control module controls the driving motor to run, and the output end of the driving motor drives the sleeves at both ends to rotate, so that the sleeve drives the disc to rotate together, simulating the working state of the shaft when the equipment is running;

[0019] 2. Detection structure: When the disc drives the shaft to rotate, the shaft will jump within a certain range. When the jumping distance exceeds the detection range, the outer surface of the central shaft will touch the pressure sensor, and the pressure sensor will transmit the information to the control module and display it on the display screen;

[0020] Furthermore, when the detection range needs to be adjusted, the card rod is manually pulled to separate the tail end of the card rod from the card slot inside the measuring rod. After separation, the measuring rod is slid back and forth along the inside of the through slot to keep a certain distance between the pressure sensor and the shaft body. After the distance is adjusted, the card rod is released and reset by the elastic force of the telescopic spring, so that the card rod engages with the corresponding card slot to fix the pressure sensor at the tail end of the measuring rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of the utility model when viewed from above;

[0023] Figure 3 This is a schematic diagram of the overall rear view structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the push plate of the utility model;

[0025] Figure 5 This is a schematic diagram of the decomposition of the ferrule and the disc body of the utility model;

[0026] Figure 6 This is a schematic diagram of the three-dimensional structure of the measuring rod of the utility model;

[0027] Figure 7 For this utility model Figure 3 Enlarged structural diagram at A in the middle.

[0028] In the figure: 1. base; 2. support leg; 3. fixing plate; 4. servo motor; 5. counter-threaded rod; 6. threaded connector; 7. push plate; 8. guide rod; 9. guide block; 10. drive motor; 11. clamping sleeve; 12. disk body; 13. shaft body; 14. support frame; 15. display screen; 16. control module; 17. through slot; 18. measuring rod; 19. pressure sensor; 20. slot; 21. fixing block; 22. telescopic spring; 23. clamping rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] The utility model provides the following technical solutions:

[0031] Embodiment 1: Figure 1-Figure 5 The technical solution shown: a lawn mower aluminum plate center axis runout detection mechanism, discloses: a base 1, and a support leg 2 is fixedly installed at the lower end of the base 1;

[0032] It also includes: a fixing plate 3 is fixedly installed on the upper end of the base 1, and a servo motor 4 is fixedly installed on the outside of the fixing plate 3, a different direction threaded rod 5 is fixedly installed on the output end of the servo motor 4, and a threaded connector 6 is connected to the outside of the different direction threaded rod 5, a push plate 7 is fixedly installed on the outside of the threaded connector 6, a guide rod 8 is fixedly installed on the inside of the fixing plate 3, and a guide block 9 is nested on the outside of the guide rod 8, and the guide block 9 is fixedly installed on the bottom of the push plate 7, a drive motor 10 is fixedly installed on the outside of the push plate 7, and a ferrule 11 is fixedly installed on the output end of the drive motor 10, a disk body 12 is arranged on the inside of the ferrule 11, and a shaft body 13 is connected between the disk bodies 12 at both ends;

[0033] The threaded connector 6 is threadedly connected with the different-direction threaded rod 5 through the threaded hole opened on the inner side, and the threaded connector 6 is provided with two groups symmetrically about the midpoint of the different-direction threaded rod 5; the ferrule 11 is provided with two groups symmetrically about the midpoint of the base 1, and the shape of the ferrule 11 is consistent with the shape of the disk body 12;

[0034] When the central axis of the aluminum disk of the lawn mower needs to be tested, the disk body 12 at both ends of the shaft body 13 is first placed at a height flush with the sleeve 11, and then the servo motor 4 is operated. The output end of the servo motor 4 drives the counter-rotating threaded rod 5 to rotate. The rotation of the counter-rotating threaded rod 5 will drive the threaded connectors 6 with threads connected at both ends to move toward each other. As the two sets of threaded connectors 6 move toward each other, the sleeve 11 on the inner side of the push plate 7 will be engaged with the outer side of the disk body 12 to fix the disk body 12. At the same time, when the push plate 7 slides left and right, the guide block 9 at the bottom will slide along the outer side of the guide rod 8. The sliding of the guide block 9 on the outer side of the guide rod 8 limits the angle of the push plate 7. When the disk bodies 12 at both ends of the shaft body 13 are fixed, the control module 16 controls the operation of the drive motor 10, and the output end of the drive motor 10 drives the sleeves 11 at both ends to rotate, so that the sleeve 11 drives the disk body 12 to rotate together, simulating the working state of the shaft body 13 when the equipment is running.

[0035] Embodiment 2 is different from Embodiment 1 in that a structure for facilitating the use of a lifting mechanism is added on the basis of fixing the shaft body 13, such as Figure 1-Figure 3 It is disclosed as shown that: a support frame 14 is fixedly mounted on the upper end of the base 1, and the support frame 14 is an inverted "L" shape structure when viewed from the side, a display screen 15 is fixedly mounted on the upper end of the support frame 14, and a control module 16 is fixedly mounted on the upper end of the support frame 14;

[0036] This structure controls the servo motor 4 and the drive motor 10 through the control module 16, and the operating status and detection structure of the detection mechanism will be displayed through the display screen 15, thereby improving the detection convenience of the mechanism.

[0037] Embodiment 3 is different from Embodiment 1 in that a structure for adjusting the detection distance is added on the basis of fixing the shaft body 13, such as Figure 1-Figure 3 , Figure 5-Figure 7 The figure discloses: a through slot 17 is opened on the inner side of the support frame 14, and a measuring rod 18 is passed through the inner side of the through slot 17, a pressure sensor 19 is fixedly installed on the tail end of the measuring rod 18, and the pressure sensor 19 and the shaft body 13 are distributed in front and back correspondence; a fixed block 21 is fixedly installed on the outer side of the support frame 14, and a telescopic spring 22 is fixedly installed on the outer side of the fixed block 21, and a clamping rod 23 is fixedly connected to the tail end of the telescopic spring 22, and the clamping rod 23 passes through the inner side of the fixed block 21;

[0038] In this structure, when the disk body 12 drives the shaft body 13 to rotate, the shaft body 13 will jump within a certain range. When the jumping distance exceeds the detection range, the outer surface of the shaft body 13 will touch the pressure sensor 19. The pressure sensor 19 transmits the information to the control module 16 and displays it through the display screen 15. When the detection range needs to be adjusted, the card rod 23 is manually pulled to separate the tail end of the card rod 23 from the card slot 20 on the inner side of the measuring rod 18. After separation, the measuring rod 18 is slid back and forth along the inner side of the through groove 17, so that the pressure sensor 19 maintains a certain distance from the shaft body 13. After the distance is adjusted, the card rod 23 is released, and the card rod 23 is reset by the elastic force of the telescopic spring 22, so that the card rod 23 is engaged with the corresponding card slot 20, so that the pressure sensor 19 at the tail end of the measuring rod 18 is fixed.

[0039] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lawn mower aluminum plate central axis runout detection mechanism, comprising a base (1), wherein a support leg (2) is fixedly mounted on the lower end of the base (1); Features: Also includes: A fixing plate (3) is fixedly mounted on the upper end of the base (1), and a servo motor (4) is fixedly mounted on the outer side of the fixing plate (3); a counter-rotating threaded rod (5) is fixedly mounted on the output end of the servo motor (4), and a threaded connector (6) is connected to the outer side of the counter-rotating threaded rod (5), and a push plate (7) is fixedly mounted on the outer side of the threaded connector (6); a guide rod (8) is fixedly mounted on the inner side of the fixing plate (3), and a guide block (9) is nested on the outer side of the guide rod (8), and the guide block (9) is fixedly mounted on the bottom of the push plate (7); a driving motor (10) is fixedly mounted on the outer side of the push plate (7), and a ferrule (11) is fixedly mounted on the output end of the driving motor (10); a disk body (12) is arranged on the inner side of the ferrule (11), and a shaft body (13) is connected between the disk bodies (12) at both ends.

2. A lawn mower aluminum plate center axis runout detection mechanism according to claim 1, characterized in that: The threaded connector (6) is threadedly connected to the asymmetric threaded rod (5) via a threaded hole provided on the inner side, and two groups of the threaded connector (6) are symmetrically arranged about the midpoint of the asymmetric threaded rod (5).

3. The lawn mower aluminum plate center axis runout detection mechanism according to claim 1, characterized in that: The ferrules (11) are arranged in two groups symmetrically about the midpoint of the base (1), and the shape of the ferrules (11) is consistent with the shape of the disc body (12).

4. The lawn mower aluminum plate center axis runout detection mechanism according to claim 1, characterized in that: A support frame (14) is fixedly mounted on the upper end of the base (1), and the support frame (14) is in an inverted "L" shape when viewed from the side. A display screen (15) is fixedly mounted on the upper end of the support frame (14), and a control module (16) is fixedly mounted on the upper end of the support frame (14).

5. A lawn mower aluminum plate center axis runout detection mechanism according to claim 4, characterized in that: A through slot (17) is provided inside the support frame (14), and a measuring rod (18) passes through the inside of the through slot (17). A pressure sensor (19) is fixedly mounted on the tail end of the measuring rod (18), and the pressure sensor (19) and the shaft body (13) are distributed in a front-to-back correspondence.

6. A lawn mower aluminum plate center axis runout detection mechanism according to claim 5, characterized in that: The inner side of the measuring rod (18) is provided with clamping grooves (20) at equal intervals, and the inner side of the clamping groove (20) is clamped and connected with a clamping rod (23).

7. The lawn mower aluminum plate center axis runout detection mechanism according to claim 5, characterized in that: A fixed block (21) is fixedly installed on the outside of the support frame (14), and a telescopic spring (22) is fixedly installed on the outside of the fixed block (21); a clamping rod (23) is fixedly connected to the tail end of the telescopic spring (22), and the clamping rod (23) passes through the inside of the fixed block (21).

Images