Lawn mower performance test bench
By designing a moving mechanism and a buffer mechanism that can clamp and fix multiple lawn mowers at the same time, the problems of low efficiency and poor accuracy of lawn mowers in the prior art are solved, and efficient and accurate performance of multiple lawn mowers are achieved. Test.
Patent Information
- Application Number
- CN202323641216.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-29
AI Technical Summary
The existing lawn mower performance testing methods have complicated manual braking time testing and insufficient load on the drive wheel, resulting in low testing efficiency and poor accuracy, and the inability to detect the performance of multiple lawn mowers at the same time.
A lawn mower performance test bench is designed, using a moving mechanism that can clamp and fix multiple lawn mowers at the same time, and offset vibrations through a buffer mechanism to improve test speed and accuracy.
The performance test of multiple lawn mowers is realized simultaneously, which improves the testing speed, and reduces the impact of the detection device on the lawn mower through the buffer mechanism, and improves the detection accuracy.
Smart Images
Figure CN222280153U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lawn mower performance testing, in particular to a lawn mower performance testing bench. Background Art
[0002] The performance test of the lawn mower includes the braking time test (requires the blade to stop within 3 seconds, repeated 5000 times), and the durability test of the gearbox of the lawn mower drive wheel (generally requires more than 150 hours). The current testing method is relatively backward, and the braking test is often performed manually. However, since the engine of the lawn mower must be turned off each time the braking time is measured, and then the engine is restarted manually, the repeated mechanical work 5000 times will cause great harm to the human body and mind; for the durability test of the gearbox, the key is how to apply a load to the drive wheel. The current practice is to place a roller that can rotate with the drive wheel under the drive wheel, and then apply a certain rotational resistance to the roller as the load of the lawn mower drive wheel. The defect of this method is that the drive wheel and the roller are only driven by friction, which is easy to slip. The maximum torque that can be applied to the drive wheel is generally only 0.5Nm, while in actual use, the maximum torque of the drive wheel needs to be able to reach 3Nm (flat ground) and 9Nm (uphill).
[0003] Chinese patent CN201955247U discloses a fuel mower performance test bench, which includes a bracket, a proximity switch mechanism, a pair of three-claw chuck assemblies, a mower control mechanism, a loading current display table, and a controller. The bracket includes a bottom plate, a side plate, a first column, and a second column. The mower control mechanism includes a flameout lever control assembly, a choke control assembly, a mower handle clamp, and a mower pull rope control assembly. Compared with the prior art, the utility model has the advantages of high automation, time and labor saving, stable and reliable torque applied to the drive wheel, and automatic recording of all test data.
[0004] The test bench can only be used to control and detect the lawn mower in the lawn mower performance test, and the performance test of the lawn mower needs to be tested on multiple lawn mowers. In this way, the test bench can only test a single lawn mower, so the test is very slow. Utility Model Content
[0005] In order to solve the above problems, a lawn mower performance test bench is provided, which can simultaneously drive the positioning mechanism to clamp and fix multiple lawn mowers on the platform through a moving mechanism, so that the performance of multiple lawn mowers can be tested at the same time, thereby improving the speed of the lawn mower performance test.
[0006] In order to solve the problems of the prior art, the utility model provides a lawn mower performance test bench, including a workbench, which is set on the ground through a plurality of supporting legs, a mounting plate is arranged above the workbench, a plurality of buffer mechanisms connected to the mounting plate are arranged on the workbench, a plurality of placing tables are arranged on the mounting plate, a positioning mechanism that can be used to fix the lawn mower is arranged on the mounting plate, and a moving mechanism that can drive the positioning mechanism is also arranged on the mounting plate.
[0007] Preferably, the positioning mechanism comprises a limiting plate, and the limiting plates have at least one pair and are symmetrically arranged on both sides of the placing table. The limiting plates are slidably connected to the mounting plate, and rubber gaskets are arranged on the limiting plates.
[0008] Preferably, the moving mechanism includes a first slider and a rotating screw; the number of the first sliders is the same as the number of the limit plates and are arranged at the bottom of the limit plates in a one-to-one correspondence, and the first slider is movably arranged on the mounting plate, and a first sliding groove for movement of the first slider is arranged on the mounting plate; the rotating screw is arranged below the mounting plate through a bearing seat, and the rotating screw is threadedly connected to the first slider.
[0009] Preferably, a driving assembly capable of driving the rotating screw to rotate is provided on the mounting plate, and the driving assembly includes a rotating motor and a second bevel gear; the rotating motor is arranged at the bottom of the mounting plate, and a first bevel gear is arranged on the output end of the rotating motor; the second bevel gear is coaxially arranged on the rotating screw, and the second bevel gear is meshingly connected with the first bevel gear.
[0010] Preferably, the buffer mechanism includes a limiting shaft and a spring; the limiting shaft is vertically arranged at the bottom of the mounting plate; the spring is sleeved on the limiting shaft, and one end of the spring is abutted against the mounting plate, and the other end is abutted against the workbench.
[0011] Preferably, the workbench is also provided with a plurality of limit assemblies, the limit assemblies comprising a fixed block and a movable block; at least one of the fixed blocks is arranged at the bottom of the mounting plate; the number of the movable blocks is the same as the number of the fixed blocks, and the movable block is arranged on a side of the workbench close to the fixed block, and the movable block is connected to the fixed block in the form of a slider.
[0012] Preferably, the movable block is further provided with a second sliding block, and the fixed block is provided with a second sliding groove which cooperates with the second sliding block.
[0013] Preferably, a guide portion is also provided on the mounting plate, and the guide portion includes a third slider, and the third slider has at least two and is movably provided on the mounting plate, and a third sliding groove for the movement of the third slider is provided on the mounting plate, and the two third sliders are respectively connected to the two limit plates.
[0014] Compared with the prior art, the utility model has the following beneficial effects:
[0015] 1. The utility model can simultaneously drive the positioning mechanism to clamp and fix the lawn mowers on multiple placement tables through the moving mechanism, so that the performance of multiple lawn mowers can be tested at the same time, thereby improving the speed of the performance test of the lawn mowers.
[0016] 2. The utility model can offset the vibration generated by the lawn mower during the performance test through the buffer mechanism, thereby reducing the influence of the detection device on the lawn mower during the detection, and improving the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 The present invention is a three-dimensional structural schematic diagram of a lawn mower performance test bench.
[0018] Figure 2 A partial three-dimensional structural section of a lawn mower performance test bench Figure 1 .
[0019] Figure 3 This application Figure 2 A local enlarged schematic diagram of point A in the middle.
[0020] Figure 4 A partial three-dimensional structural section of a lawn mower performance test bench Figure 2 .
[0021] Figure 5 This application Figure 4 A local enlarged schematic diagram of point B in the middle.
[0022] Figure 6 A partial three-dimensional structural section of a lawn mower performance test bench Figure 3 .
[0023] Figure 7 This application Figure 6 A partial enlarged schematic diagram of point C in the middle.
[0024] The numbers in the figure are: 1. workbench; 11. supporting leg; 2. mounting plate; 21. guide part; 211. third slider; 212. third slide groove; 3. placement table; 4. positioning mechanism; 41. limit plate; 411. rubber gasket; 5. moving mechanism; 51. first slider; 52. first slide groove; 53. rotating screw; 54. driving assembly; 541. rotating motor; 542. first bevel gear; 543. second bevel gear; 6. buffer mechanism; 61. limit shaft; 62. spring; 63. limit assembly; 631. fixed block; 632. moving block; 6321. second slider; 6322. second slide groove. DETAILED DESCRIPTION
[0025] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0026] Figures 1 to 7 As shown, a lawn mower performance test bench includes a workbench 1, which is set on the ground through a plurality of supporting legs 11, a mounting plate 2 is arranged above the workbench 1, a plurality of buffer mechanisms 6 connected to the mounting plate 2 are arranged on the workbench 1, a plurality of placing tables 3 are arranged on the mounting plate 2, a positioning mechanism 4 that can be used to fix the lawn mower is arranged on the mounting plate 2, and a moving mechanism 5 that can drive the positioning mechanism 4 is also arranged on the mounting plate 2.
[0027] When the performance test of the lawn mower is required, the lawn mower is first placed on the placement table 3, and then the positioning mechanism 4 is driven to move by starting the moving mechanism 5, and then the lawn mower on the placement table 3 is clamped and fixed by the positioning mechanism 4, and then the performance test of the lawn mower is performed. When the lawn mower is under test, the lawn mower will vibrate due to its operation, so the vibration force is offset by the buffer mechanism 6 on the workbench 1. After the performance test of the lawn mower is completed, the moving mechanism 5 is driven to drive the positioning mechanism 4 to move. The positioning mechanism 4 is moved away from the lawn mower, and then the lawn mower that has completed the performance test is taken off the placement table 3, and the above performance test is repeated for a new lawn mower. The positioning mechanism 4 can be driven by the moving mechanism 5 to clamp and fix the lawn mowers on multiple placement tables 3 at the same time, so that the performance tests of multiple lawn mowers can be performed at the same time, thereby improving the speed of the performance tests of the lawn mowers, and the buffer mechanism 6 can offset the vibration generated by the lawn mower during the performance test, thereby reducing the influence of the detection device on the detection of the lawn mower and improving the accuracy of the detection.
[0028] Reference Figure 4 and Figure 6As shown, the positioning mechanism 4 includes a limit plate 41, which has at least a pair of limit plates 41 and is symmetrically arranged on both sides of the placement table 3. The limit plates 41 are slidably connected to the mounting plate 2, and a rubber gasket 411 is arranged on the limit plate 41.
[0029] When it is necessary to clamp and fix the lawn mower on the placement table 3, the moving mechanism 5 drives the limit plates 41 on both sides of the placement table 3 to move closer synchronously, thereby clamping and fixing the lawn mower. In order to prevent the limit plates 41 from causing damage to the lawn mower when clamping and fixing the lawn mower again, the rubber gasket 411 is set at this time, so that when the limit plates 41 clamp the lawn mower again, they contact with the lawn mower through the rubber gasket 411, thereby effectively preventing the limit plates 41 from causing damage to the lawn mower.
[0030] Reference Figure 4 As shown, the moving mechanism 5 includes a first slider 51 and a rotating screw 53; the number of the first sliders 51 is the same as the number of the limit plates 41 and they are arranged at the bottom of the limit plates 41 in a one-to-one correspondence, and the first sliders 51 are movably arranged on the mounting plate 2, and the mounting plate 2 is provided with a first slide groove 52 for the first slider 51 to move; the rotating screw 53 is arranged below the mounting plate 2 through a bearing seat, and the rotating screw 53 is threadedly connected to the first slider 51.
[0031] By driving the rotating screw rod 53 to rotate, when the rotating screw rod 53 rotates, it will synchronously drive the two first sliding blocks 51 to move closer to each other, which will simultaneously drive the two limiting plates 41 to move closer to each other, thereby clamping and fixing the lawn mower, and the first sliding block 51 can only move in the first sliding groove 52 of the mounting plate 2, so as to have a guiding and limiting effect on the first sliding block 51, preventing the first sliding block 51 from falling off the mounting plate 2 when moving, so that when the lawn mower needs to be released, it is only necessary to drive the rotating screw rod 53 to rotate, thereby improving the convenience during operation.
[0032] Reference Figure 5As shown, a driving assembly 54 capable of driving the rotating screw 53 to rotate is provided on the mounting plate 2, and the driving assembly 54 includes a rotating motor 541 and a second bevel gear 543; the rotating motor 541 is arranged at the bottom of the mounting plate 2, and a first bevel gear 542 is arranged on the output end of the rotating motor 541; the second bevel gear 543 is coaxially arranged on the rotating screw 53, and the second bevel gear 543 is meshingly connected with the first bevel gear 542.
[0033] By directly starting the rotating motor 541 on the mounting plate 2, when the rotating motor 541 is working, it will synchronously drive the first bevel gear 542 to rotate, thereby also synchronously driving the second bevel gear 543 to rotate, and then driving the rotating screw 53 to rotate. In this way, through the operation of the rotating motor 541, the limit plate 41 can be directly driven to approach or move away from the lawn mower, thereby further improving the convenience during operation.
[0034] Reference Figure 3 As shown, the buffer mechanism 6 includes a limit shaft 61 and a spring 62; the limit shaft 61 is vertically arranged at the bottom of the mounting plate 2; the spring 62 is sleeved on the limit shaft 61, and one end of the spring 62 is abutted against the mounting plate 2, and the other end is abutted against the workbench 1.
[0035] When the lawn mower is undergoing a performance test, the lawn mower will work, and the lawn mower will certainly vibrate when working, and this vibration force will drive the mounting plate 2 to vibrate. When the mounting plate 2 vibrates, the spring 62 will be squeezed, causing the spring 62 to be compressed and have an elastic restoring force. In this way, the mounting plate 2 also offsets this vibration through the elastic force of the spring 62, thereby improving the stability of the lawn mower during the performance test, thereby improving the accuracy of the test results, and the limit shaft 61 can effectively prevent the spring 62 from shifting, thereby affecting the test results.
[0036] Reference Figure 7 As shown, a plurality of limit assemblies 63 are also provided on the workbench 1, and the limit assemblies 63 include a fixed block 631 and a movable block 632; at least one of the fixed blocks 631 is arranged at the bottom of the mounting plate 2; the number of the movable blocks 632 is the same as the number of the fixed blocks 631, and the movable block 632 is arranged on one side of the workbench 1 close to the fixed block 631, and the movable block 632 is connected to the fixed block 631 in the form of a slider.
[0037] Since the workbench 1 and the mounting plate 2 are only abutted by the spring 62, it is easy to cause the mounting plate 2 to deviate from the workbench 1. In this way, the moving block 632 moves on the fixed block 631, which can limit the position between the workbench 1 and the mounting plate 2, and the moving block 632 moves on the fixed block 631 without affecting the operation of the spring 62.
[0038] Reference Figure 7 As shown, the moving block 632 is further provided with a second sliding block 6321 , and the fixed block 631 is provided with a second sliding groove 6322 that cooperates with the second sliding block 6321 .
[0039] When the movable block 632 moves on the fixed block 631, it can only limit the workbench 1 and the mounting plate 2 in the vertical direction, and there is still no limit in the horizontal direction, so that the mounting plate 2 is still displaced, and through the setting of the second slider 6321, when the movable block 632 moves, it will also synchronously drive the second slider 6321 to move in the second slide groove 6322 of the fixed block 631, and then through the cooperation between the second slider 6321 and the second slide groove 6322, the movable block 632 can only move up and down on the fixed block 631, and then there is also a horizontal limit between the workbench 1 and the mounting plate 2, which can further ensure that the mounting plate 2 will not be displaced on the workbench 1.
[0040] Reference Figure 6 As shown, a guide portion 21 is also provided on the mounting plate 2, and the guide portion 21 includes a third slider 211, and the third slider 211 has at least two and is movably provided on the mounting plate 2, and a third slide groove 212 for the third slider 211 to move is provided on the mounting plate 2, and the two third sliders 211 are respectively connected to the two limit plates 41.
[0041] When the limit plate 41 moves on the mounting plate 2, it is driven by the first slider 51 to move the limit plate 41. Therefore, after working for a long time, the limit plate 41 will not be in a horizontal direction. In this way, the third slider 211 can only move in the third slide groove 212 of the mounting plate 2, thereby providing secondary guidance and limiting effects for the limit plate 41, thereby improving the stability of the limit plate 41 during operation, and further improving the speed of the lawn mower performance detection.
[0042] The above embodiments only express one or several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the attached claims.
Claims
1. A lawn mower performance test bench, characterized in that: The invention comprises a workbench (1), wherein the workbench (1) is arranged on the ground via a plurality of supporting legs (11), a mounting plate (2) is arranged above the workbench (1), a plurality of buffer mechanisms (6) connected to the mounting plate (2) are arranged on the workbench (1), a plurality of placement platforms (3) are arranged on the mounting plate (2), a positioning mechanism (4) capable of fixing a lawn mower is arranged on the mounting plate (2), and a moving mechanism (5) capable of driving the positioning mechanism (4) is also arranged on the mounting plate (2).
2. A lawn mower performance test bench according to claim 1, characterized in that: The positioning mechanism (4) comprises a limiting plate (41), the limiting plates (41) having at least one pair and symmetrically arranged on both sides of the placement platform (3), the limiting plates (41) being slidably connected to the mounting plate (2), and a rubber gasket (411) being arranged on the limiting plates (41).
3. A lawn mower performance test bench according to claim 2, characterized in that: The moving mechanism (5) comprises a first sliding block (51) and a rotating screw rod (53); The number of the first sliding blocks (51) is the same as the number of the limiting plates (41) and they are arranged on the bottom of the limiting plates (41) in a one-to-one correspondence, and the first sliding blocks (51) are movably arranged on the mounting plate (2), and the mounting plate (2) is provided with a first sliding groove (52) for the first sliding blocks (51) to move; The rotating screw rod (53) is arranged below the mounting plate (2) via a bearing seat, and the rotating screw rod (53) is threadedly connected to the first sliding block (51).
4. A lawn mower performance test bench according to claim 3, characterized in that: The mounting plate (2) is provided with a driving assembly (54) capable of driving the rotating screw (53) to rotate, and the driving assembly (54) comprises a rotating motor (541) and a second bevel gear (543); The rotating motor (541) is arranged at the bottom of the mounting plate (2), and a first bevel gear (542) is arranged on the output end of the rotating motor (541); The second bevel gear (543) is coaxially arranged on the rotating screw (53), and the second bevel gear (543) is meshingly connected with the first bevel gear (542).
5. A lawn mower performance test bench according to claim 1, characterized in that: The buffer mechanism (6) comprises a limiting shaft (61) and a spring (62); The limiting shaft (61) is vertically arranged at the bottom of the mounting plate (2); The spring (62) is sleeved on the limiting shaft (61), and one end of the spring (62) is disposed in contact with the mounting plate (2), and the other end of the spring (62) is disposed in contact with the workbench (1).
6. A lawn mower performance test bench according to claim 1, characterized in that: The workbench (1) is also provided with a plurality of limit assemblies (63), wherein the limit assemblies (63) include a fixed block (631) and a movable block (632); The fixing block (631) has at least one portion arranged at the bottom of the mounting plate (2); The number of the movable blocks (632) is the same as the number of the fixed blocks (631), and the movable blocks (632) are arranged on a side of the workbench (1) close to the fixed blocks (631), and the movable blocks (632) and the fixed blocks (631) are connected in the form of a slide block.
7. A lawn mower performance test bench according to claim 6, characterized in that: The movable block (632) is also provided with a second sliding block (6321), and the fixed block (631) is provided with a second sliding groove (6322) that cooperates with the second sliding block (6321).
8. A lawn mower performance test bench according to claim 2, characterized in that: The mounting plate (2) is further provided with a guide portion (21), the guide portion (21) comprising a third slider (211), the third slider (211) having at least two and movably arranged on the mounting plate (2), the mounting plate (2) being provided with a third slide groove (212) for the third slider (211) to move, and the two third sliders (211) are respectively connected to the two limit plates (41).