Calibration test fixture for mower
By designing a calibration test fixture consisting of a support frame, a test bench, a bidirectional threaded rod, and an adjustment component, the problems of inconvenient fixation of the lawn mower and test errors were solved, and stable fixation and precise calibration of the lawn mower were achieved.
Patent Information
- Application Number
- CN202422591174.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-10-25
AI Technical Summary
The existing calibration test fixture is inconvenient when fixing the lawn mower, which easily leads to test errors, and the test baffle cannot be adjusted as needed.
A calibration test fixture was designed, which included a support frame, a test bench, a bidirectional threaded rod, a motor, a moving block, a limit plate, and an adjustment component. The bidirectional threaded rod was used to drive the moving block and the limit plate to move and fix the lawn mower. The adjustment component was used to adjust the position of the fixing plate and the test baffle to achieve stable fixation and precise calibration of the lawn mower.
The mower can be stably fixed, test errors are reduced, and precise position adjustment can be performed as needed, thereby improving the practicality of the calibration test.
Smart Images
Figure CN223406804U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lawn mower calibration equipment, in particular to a calibration test fixture for a lawn mower. Background Art
[0002] A lawn mower is a mechanical device designed specifically for mowing and trimming lawns. Powered by electricity, gasoline, or other sources, it utilizes rotating metal blades or nylon ropes to cut grass blades, thereby achieving the purpose of mowing the lawn. When using a lawn mower, it is necessary to design and test scenarios that simulate the robot's protective mechanisms when a person or object approaches it.
[0003] Most existing calibration test fixtures are inconvenient for fixing the lawn mower during the calibration test, which easily causes test errors, and the test baffle cannot be adjusted according to needs.
[0004] In order to solve the above problems, a calibration test fixture for a lawn mower is proposed. Utility Model Content
[0005] The purpose of the utility model is to provide a calibration test fixture for a lawn mower, which solves the problem in the background art that it is inconvenient to fix the lawn mower during calibration testing, which easily causes test errors and the test baffle cannot be adjusted according to needs.
[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a calibration test fixture for a lawn mower, comprising a support frame, a test bench fixedly connected to the top of the support frame, a mounting slot provided on the top of the test bench, a bidirectional threaded rod passing through and rotatably connected to the mounting slot, a motor fixedly connected to the front side of the test bench, an output end of the motor fixedly connected to the bidirectional threaded rod, movable blocks threadedly connected to the outer rings on both sides of the bidirectional threaded rod, a limit plate fixedly connected to the top of the movable block, a lawn mower body provided on the top of the test bench, adjustment components provided on both sides of the test bench, two fixed plates connected to the top of the adjustment component, cylinders fixedly connected to the inner sides of the two fixed plates, and a test baffle fixedly connected to the output end of the cylinder.
[0007] By adopting the above technical solution, the two moving blocks and the limit plate can be driven to move relative to each other through the bidirectional threaded rod, so that the front and rear ends of the lawn mower body on the test bench can be fixed by the two limit plates to prevent the movement of the lawn mower body during the test from affecting the calibration test effect.
[0008] As a further description of the above technical solution: the adjustment component includes a limiting slide rail, the two limiting slide rails are fixedly connected to the test bench, the outer side of the limiting slide rail is provided with evenly distributed threaded holes, the outer side of the limiting slide rail is slidably connected to a mounting plate, both sides of the mounting plate are fixedly connected with connecting parts, the top of the mounting plate is provided with evenly distributed adjustment holes, two groups of connecting seats are provided on the top of the mounting plate, and the outer side of the connecting seat is fixedly connected to the fixed plate.
[0009] By adopting the above technical solution, the adjusting component can drive the mounting plate to move forward and backward along the limiting slide rail, thereby adjusting the front and rear position of the upper fixed plate, and by cooperating with the second screw and the adjustment hole, the position of the two fixed plates on the mounting plate can be fine-tuned, which is more practical.
[0010] As a further description of the above technical solution: the moving block is arranged in the installation groove, and the outer portion of the moving block is slidably connected to the inner wall of the installation groove.
[0011] By adopting the above technical solution, the installation groove has a limiting effect on the moving block.
[0012] As a further description of the above technical solution: the lawn mower body is arranged between two limiting plates.
[0013] By adopting the above technical solution, the front and rear ends of the lawn mower body can be fixed by the two limiting plates.
[0014] As a further description of the above technical solution: both sides of the rear end of the test bench are fixedly connected with connecting frames, and the outer sides of the connecting frames are fixedly connected with protective covers.
[0015] By adopting the above technical solution, the distance between the protective cover and the radar installed on the lawn mower body is greater than the detection range of the radar and will not affect the detection of the radar.
[0016] As a further description of the above technical solution: universal wheels are fixedly connected to the four corners of the bottom of the support frame.
[0017] By adopting the above technical solution, the support frame can be easily moved by the universal wheels.
[0018] As a further description of the above technical solution: a first screw is provided through and in the connecting member, and the end of the first screw is threadedly connected to the threaded hole.
[0019] By adopting the above technical solution, the adjusted mounting plate can be fixed by means of the first screw and the connecting plate.
[0020] As a further description of the above technical solution: a second screw is provided through and in the connecting seat, and the bottom of the second screw is threadedly connected to the adjustment hole.
[0021] By adopting the above technical solution, the adjusted fixing plate can be fixed by the second screw cooperating with the connecting seat.
[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0023] 1. The utility model provides a calibration test fixture for a lawn mower. First, the test table, mounting slot, bidirectional threaded rod, motor, moving block, and limit plate work together. The bidirectional threaded rod can drive the two moving blocks and the limit plate to move relative to each other, so that the front and rear ends of the lawn mower body on the test table are fixed by the two limit plates to prevent the lawn mower body from moving during the test and affecting the calibration test effect.
[0024] 2. The utility model provides a calibration test fixture for a lawn mower, which works in conjunction with a limit slide rail, a threaded hole, a mounting plate, a connector, a first screw, a connecting seat, a second screw fixing plate, a cylinder, a test baffle, a connection and an adjustment hole. The adjustment component can drive the mounting plate to move back and forth along the limit slide rail, thereby adjusting the front and rear positions of the upper fixing plate and the test baffle. Moreover, the second screw cooperates with the adjustment hole to fine-tune the positions of the two fixing plates and the test baffle on the mounting plate, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0026] Figure 2 This is a schematic diagram of the test bench structure of the utility model;
[0027] Figure 3 This is a schematic diagram of the structure of the adjustment component of the present utility model.
[0028] In the figure: 1. Support frame; 2. Test bench; 3. Mounting slot; 4. Bidirectional threaded rod; 5. Motor; 6. Moving block; 7. Limit plate; 8. Lawn mower body; 9. Limit slide rail; 10. Threaded hole; 11. Mounting plate; 12. Connector; 13. First screw; 14. Connecting seat; 15. Second screw; 16. Fixing plate; 17. Cylinder; 18. Test baffle; 19. Connecting frame; 20. Protective cover; 21. Adjustment hole; 22. Universal wheel. DETAILED DESCRIPTION
[0029] The following will refer to the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0030] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.
[0031] Reference Figure 1 、 Figure 2 and Figure 3 The utility model is a calibration test fixture for a lawn mower, comprising a support frame 1, a test bench 2 is fixedly connected to the top of the support frame 1, the test bench 2 is used to place the lawn mower body 8, a mounting slot 3 is provided on the top of the test bench 2, a bidirectional threaded rod 4 is passed through and rotatably connected to the mounting slot 3, a motor 5 is fixedly connected to the front side of the test bench 2, the bidirectional threaded rod 4 can be driven to rotate by the motor 5, the output end of the motor 5 is fixedly connected to the bidirectional threaded rod 4, the outer rings on both sides of the bidirectional threaded rod 4 are threadedly connected with moving blocks 6, the top of the moving block 6 is fixedly connected to a limit plate 7, the limit plate 7 can be driven by the moving block 6 Movement, a lawn mower body 8 is provided on the top of the test bench 2, and a radar (not marked in the figure) is installed on the lawn mower body 8, which can detect objects passing on both sides. Adjustment components are provided on both sides of the test bench 2, and two fixed plates 16 are connected to the top of the adjustment component. The fixed plates 16 play a supporting role. The inner sides of the two fixed plates 16 are fixedly connected to the cylinders 17, which can drive the test baffles 18 to move the simulated person. The output end of the cylinder 17 is fixedly connected to the test baffles 18. After the test baffles 18 on the radar on the lawn mower body 8 are blocked, the lawn mower body 8 stops working.
[0032] Reference Figure 3The adjusting assembly includes a limit slide rail 9, two limit slide rails 9 are fixedly connected to the test bench 2, and the outer side of the limit slide rail 9 is provided with evenly distributed threaded holes 10. The outer side of the limit slide rail 9 is slidably connected to a mounting plate 11, and both sides of the mounting plate 11 are fixedly connected with connecting members 12. The top of the mounting plate 11 is provided with evenly distributed adjustment holes 21. Two groups of connecting seats 14 are provided on the top of the mounting plate 11. The outer side of the connecting seat 14 is fixedly connected to the fixing plate 16. A first screw 13 is passed through and provided in the connecting member 12. The end of the first screw 13 is threadedly connected to the threaded hole 10, and a second screw 15 is passed through and provided in the connecting seat 14. The bottom of the second screw 15 is threadedly connected to the adjusting hole 21. The mounting plate 11 can be driven to move forward and backward along the limit slide rail 9 through the adjusting assembly, thereby adjusting the front and rear position of the upper fixing plate 16, and the second screw 15 cooperates with the adjusting hole 21 to make the positions of the two fixing plates 16 on the mounting plate 11 fine-tuned, which is more practical.
[0033] Reference Figure 1 、 Figure 2 and Figure 3 The movable block 6 is arranged in the mounting groove 3, and the outer portion of the movable block 6 is slidably connected to the inner wall of the mounting groove 3. The mounting groove 3 has a limiting effect on the movable block 6. The lawn mower body 8 is arranged between the two limiting plates 7. The front and rear ends of the lawn mower body 8 can be fixed by the two limiting plates 7. The rear ends of the test bench 2 are fixedly connected to the connecting frame 19 on both sides, and the outer side of the connecting frame 19 is fixedly connected to the protective cover 20. The four corners of the bottom of the support frame 1 are fixedly connected to the universal wheels 22, which can facilitate the movement of the support frame 1.
[0034] Working principle: When the lawn mower body 8 needs to be calibrated and tested, the lawn mower body 8 equipped with the radar is placed on the test bench 2, and then the motor 5 is started to drive the bidirectional threaded rod 4 to rotate, and the bidirectional threaded rod 4 drives the two moving blocks 6 and the limit plate 7 to move relative to each other, so as to clamp the front and rear ends of the lawn mower body 8. Then, the two cylinders 17 on both sides of the lawn mower body 8 are started to drive the test baffle 18 to reciprocate to simulate human movement. When the test baffle 18 moves to the radar detection position of the lawn mower body 8, the radar stops working after detecting the signal, and the first The mounting plate 11 can be moved along the limiting slide rail 9 by screw 13, thereby fine-tuning the position of the upper test baffle 18, and calibrating the lawn mower body 8 and the installed radar through the two test baffles 18 with different distances on both sides of the lawn mower body 8, and by removing the second screw 15 from the connecting seat 14, the fixing plate 16 can be disassembled, and the fixing plate 16 and the connecting seat 14 can be installed by cooperating with the adjustment hole 21 and the second screw 15, so that the distance between the fixing plate 16 and the test baffle 18 and the lawn mower body 8 can be fine-tuned, which is convenient for calibration and more practical.
[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A calibration test fixture for a lawn mower, comprising a support frame (1), characterized in that: The top of the support frame (1) is fixedly connected to a test bench (2), a mounting slot (3) is provided on the top of the test bench (2), a bidirectional threaded rod (4) is passed through and rotatably connected in the mounting slot (3), a motor (5) is fixedly connected to the front side of the test bench (2), an output end of the motor (5) is fixedly connected to the bidirectional threaded rod (4), both outer rings of the bidirectional threaded rod (4) are threadedly connected to moving blocks (6), the top of the moving blocks (6) are fixedly connected to a limiting plate (7), a lawn mower body (8) is provided on the top of the test bench (2), and adjustment components are provided on both sides of the test bench (2), the top of the adjustment component is connected to two fixed plates (16), the inner sides of the two fixed plates (16) are fixedly connected to a cylinder (17), and the output end of the cylinder (17) is fixedly connected to a test baffle (18).
2. The lawn mower calibration test fixture according to claim 1, characterized in that: The adjustment assembly includes a limiting slide rail (9), two limiting slide rails (9) are fixedly connected to the test bench (2), the outer side of the limiting slide rail (9) is provided with evenly distributed threaded holes (10), the outer side of the limiting slide rail (9) is slidably connected to a mounting plate (11), both sides of the mounting plate (11) are fixedly connected with connecting pieces (12), the top of the mounting plate (11) is provided with evenly distributed adjustment holes (21), the top of the mounting plate (11) is provided with two groups of connecting seats (14), and the outer side of the connecting seat (14) is fixedly connected to the fixed plate (16).
3. The lawn mower calibration test fixture according to claim 1, characterized in that: The moving block (6) is arranged in the installation groove (3), and the outside of the moving block (6) is slidably connected to the inner wall of the installation groove (3).
4. The lawn mower calibration test fixture according to claim 1, characterized in that: The lawn mower body (8) is arranged between two limiting plates (7).
5. The lawn mower calibration test fixture according to claim 1, characterized in that: Both sides of the rear end of the test bench (2) are fixedly connected to a connecting frame (19), and a protective cover (20) is fixedly connected to the outside of the connecting frame (19).
6. The lawn mower calibration test fixture according to claim 1, characterized in that: Universal wheels (22) are fixedly connected to the four corners of the bottom of the support frame (1).
7. The lawn mower calibration test fixture according to claim 2, characterized in that: A first screw (13) is passed through and provided in the connecting member (12), and the end of the first screw (13) is threadedly connected to the threaded hole (10).
8. The lawn mower calibration test fixture according to claim 2, characterized in that: A second screw (15) is passed through and provided in the connecting seat (14), and the bottom of the second screw (15) is threadedly connected to the adjustment hole (21).