Torque test platform with variable reduction ratio
By designing a torque testing platform with a variable reduction ratio and utilizing a reduction mechanism and gear adjustment, the problems of high cost and poor versatility in high-speed motor torque testing have been solved, resulting in reduced equipment cost and expanded applicability.
Patent Information
- Application Number
- CN202520676875.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-11
AI Technical Summary
Torque detection of high-speed brushless motors requires high-precision torque sensors, resulting in high cost of testing equipment and difficulty in adapting to the testing needs of various motor specifications.
Design a torque testing platform with variable reduction ratio. Through the reduction mechanism and gear adjustment, the reduction speed can be reduced and the torque increased, thus expanding the applicability of the equipment. The reduction ratio can be adjusted by using replaceable gears, and different reduction effects can be achieved by combining the sliding seat and the slot.
This reduces the accuracy requirements of torque sensors, lowers equipment costs, and expands the applicability to motors with different speeds and torques, ensuring both testing accuracy and equipment versatility.
Smart Images
Figure CN223925884U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of motor torque testing technology, and in particular relates to a torque testing platform with a variable reduction ratio. Background Technology
[0002] High-speed brushless motors, with their operating characteristics of tens of thousands of revolutions per minute, are widely used in micro-drive applications such as model cars and model aircraft. These motors inherently exhibit high-speed, low-torque output, requiring high-precision torque sensors for accurate torque measurement, leading to high costs for testing equipment. Traditional testing methods suffer from the following drawbacks: high-precision sensors are expensive and have fixed measurement ranges, making them difficult to adapt to the testing needs of various motor specifications. Utility Model Content
[0003] The purpose of this application is to provide a torque testing platform with a variable reduction ratio. Through the reduction mechanism, the effect of speed reduction and torque increase is achieved. The reduction ratio can also be adjusted by changing the gears, which not only ensures the testing accuracy but also significantly expands the applicability of the equipment to motors with different speeds and torques. This effectively solves the problems of high cost and poor versatility in high-speed motor torque testing.
[0004] To achieve the above-mentioned objectives, the technical solution adopted in this application is as follows:
[0005] This application provides a torque testing platform with a variable reduction ratio, including: a base frame, a bearing housing, a pinion shaft, a large gear, a large gear shaft, a support tube, screws, bushings, bearings, a motor under test, a motor housing, and a sliding seat;
[0006] When the motor under test rotates, its shaft drives the pinion shaft to rotate at the same speed. The pinion shaft meshes with the large gear, and after deceleration, the speed is reduced to the large gear. The large gear drives the large gear shaft to rotate and transmits the speed to the torque sensor through the coupling. When the reduction ratio needs to be changed, different gear ratios can be obtained by replacing the pinion shaft or the large gear, thus achieving the effect of different reduction ratios. The meshing of the pinion shaft and the large gear is achieved by the left and right movement of the sliding seat and the slot.
[0007] In some embodiments, the base frame is provided with:
[0008] The first bearing bore can accommodate a bearing;
[0009] The first threaded hole allows four screws to be fixed by corresponding one-to-one with the four first through holes of the bearing housing;
[0010] The slot allows the screw to be fixed to the third threaded hole of the sliding seat.
[0011] Several countersunk holes are used to secure the device to other equipment with screws.
[0012] The raised plane is used to reduce the planar area between the base frame and the bearing housing;
[0013] The first surface contacts the second surface of the slide block, improving the installation stability of the slide block.
[0014] In some embodiments, the bearing housing and bearing seat respectively have a second bearing hole and a third bearing hole, which can be used to install the bearing and the bearing respectively; they also respectively have a first through hole and a second through hole, the diameter of which is larger than the thread diameter of the screw and the screw respectively, and smaller than the head diameter of the screw and the screw respectively.
[0015] In some embodiments, the pinion shaft has:
[0016] The first tooth is used to mesh with the second tooth of the large gear to achieve the purpose of speed reduction, and its reduction ratio is its gear ratio.
[0017] The first boss is used to mount the bearing and is clearance-fitted to it.
[0018] The second boss is used to install the bearing, forming a clearance fit, and contains a bushing between it and the first tooth to prevent the pinion shaft from moving axially.
[0019] The third through hole allows the shaft of the motor under test to pass through, and the third through hole is clearance-fitted with the shaft.
[0020] The third boss is used for axial positioning of the pinion shaft and has a radial threaded hole. It can be tightened with screws to abut against the beveled edge of the motor shaft under test, so that the shaft is fixed to the pinion shaft.
[0021] In some embodiments, the large gear has:
[0022] The central through hole is clearance-fitted with the fourth boss of the large gear shaft;
[0023] The circular recess aligns with the pin groove of the large gear shaft and is fixed to the large gear shaft by means of pins and glue.
[0024] In some embodiments, the large gear shaft has:
[0025] The fifth boss is used to mount the bearing, forming a clearance fit;
[0026] The sixth boss is used for the axial positioning of the large gear shaft and the large gear.
[0027] The fourth boss is used to install the large gear, bushing, and bearing in sequence;
[0028] The seventh boss is connected to the torque sensor via a coupling.
[0029] In some embodiments, both the support tube and the support pipe are hollow cylinders with inner diameters larger than the screw and the screw's thread outer diameter, and both ends of the support tube and the support pipe have a high degree of perpendicularity to their corresponding central axis.
[0030] In some embodiments, the bushing is sleeved on the pinion shaft and the bushing is sleeved on the gear shaft. The bushing is hollow cylindrical and has the following characteristics:
[0031] The outer diameter is smaller than the inner ring of the bearing and is used for axial positioning.
[0032] The inner diameter allows passage of a small gear shaft in the middle, forming a clearance fit;
[0033] The eighth boss has an outer diameter smaller than the root of the first tooth of the pinion shaft.
[0034] In some embodiments, the motor mount has:
[0035] The curved surface has the same outer diameter as the motor being tested and is in contact with the motor being tested. It is used to support the weight of the motor being tested and to prevent the concentricity of the shaft from being affected by the excessive weight of the motor being tested.
[0036] The fourth through hole is a mounting hole for fixing the motor base to the sliding seat with screws.
[0037] In some embodiments, the slide seat has:
[0038] The fourth bearing hole is used to install the bearing;
[0039] The second threaded hole is used to install the support tube and screws;
[0040] The fifth through hole allows the motor under test to be fixed with screws;
[0041] The second side contacts the first side of the base frame and is used for axial positioning of the pinion shaft;
[0042] The third threaded hole is used to install screws. When the screws are tightened, they can be used to fix the base and sliding seat. When the screws are loosened, they can move left and right with the slot. By changing the pinion shaft or the large gear, different gear ratios can be obtained, thereby achieving different reduction ratios. The meshing of the pinion shaft and the large gear is achieved by the left and right movement of the sliding seat and the slot.
[0043] Compared with the prior art, the beneficial effects of the embodiments of this application are:
[0044] This application provides a variable reduction ratio torque testing platform. By controlling the verticality of the support tube and the flatness of a specific area (protruding plane) of the base frame, the installation accuracy of the bearings at both ends can be improved. It also features speed reduction and torque increase, reducing the accuracy requirements of the torque sensor and thus achieving cost reduction without affecting functionality. Furthermore, a sliding function is added, allowing for gear replacement and adjustment of the reduction ratio to achieve different speed reduction effects. This ensures testing accuracy while significantly expanding the applicability of the equipment to motors of different speeds and torques, effectively solving the problems of high cost and poor versatility in high-speed motor torque testing. Attached Figure Description
[0045] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0046] Figure 1 An exploded view of a torque testing platform with a variable reduction ratio provided in an embodiment of this application is shown;
[0047] Figure 2 A schematic diagram of the base frame provided in an embodiment of this application is shown;
[0048] Figure 3 Another structural schematic diagram of the base frame provided in an embodiment of this application is shown;
[0049] Figure 4 A schematic diagram of a bearing housing provided in an embodiment of this application is shown.
[0050] Figure 5 A schematic diagram of another bearing housing provided in an embodiment of this application is shown;
[0051] Figure 6 A schematic diagram of the pinion shaft provided in an embodiment of this application is shown;
[0052] Figure 7 A schematic diagram of the structure of the large gear provided in an embodiment of this application is shown;
[0053] Figure 8 A schematic diagram of the structure of the large gear shaft provided in an embodiment of this application is shown;
[0054] Figure 9 A schematic diagram of the installation of the large gear and large gear shaft provided in an embodiment of this application is shown;
[0055] Figure 10A schematic diagram of the structure of the bushing provided in an embodiment of this application is shown;
[0056] Figure 11 A schematic diagram of the structure of the motor under test provided in an embodiment of this application is shown;
[0057] Figure 12 A schematic diagram of the structure of the motor mount provided in an embodiment of this application is shown;
[0058] Figure 13 A schematic diagram of the structure of the sliding seat provided in an embodiment of this application is shown. Detailed Implementation
[0059] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0060] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0062] To illustrate the technical solution described in this application, specific embodiments are provided below.
[0063] Please see Figures 1 to 13 As shown in the figure, this application embodiment provides a torque testing platform with a variable reduction ratio, including: a base frame 100, multiple bearing seats, a pinion shaft 300, a large gear 400, a large gear shaft 500, multiple support tubes, multiple screws, multiple bushings, multiple bearings, a motor under test 1000, a motor seat 1100, and a sliding seat 1200.
[0064] This application provides a variable reduction ratio torque testing platform. When the tested motor 1000 rotates, its shaft drives the pinion shaft 300 to rotate at the same speed. The pinion shaft 300 meshes with the large gear 400. After reduction, the torque is transmitted to the large gear 400, which drives the large gear shaft 500 to rotate and transmits the torque to the torque sensor through a coupling. When the reduction ratio needs to be changed, different gear ratios can be obtained by replacing the pinion shaft 300 or the large gear 400, thereby achieving the effect of different reduction ratios. The meshing of the pinion shaft 300 and the large gear 400 is achieved by the left and right movement of the sliding seat 1200 and the slot 130.
[0065] In some embodiments, please refer to Figures 1 to 3 As shown, the base frame 100 is equipped with:
[0066] The first bearing hole 110 can accommodate bearing 920;
[0067] The first threaded hole 120, and the four screws 710 can be fixed by corresponding one-to-one with the four first through holes 212 of the bearing seat 210 to the four first threaded holes 120;
[0068] The slot 130 allows the screw 730 to be fixed to the third threaded hole 1250 of the sliding seat 1200, thereby adjusting the position of the sliding seat 1200.
[0069] Several countersunk holes 140 are used to fix the base frame 100 to other equipment by screws.
[0070] The raised plane 150 is used to reduce the plane area of the base frame 100 and the bearing seat 210, which can improve the flatness of the machining and achieve a high precision effect.
[0071] The first surface 160 contacts the second surface 1240 of the slide seat 1200, thereby improving the installation stability of the slide seat 1200.
[0072] In some embodiments, please refer to Figure 1 , Figure 4 and Figure 5 As shown, the multiple bearing housings include:
[0073] Bearing housing 210 and bearing housing 220 have a second bearing hole 211 and a third bearing hole 221 respectively, which can be used to install bearings 910 and 940 respectively; they also have a first through hole 212 and a second through hole 222 respectively, the diameter of which is larger than the thread diameter of screw 710 and screw 720 respectively, and smaller than the head diameter of screw 710 and screw 720 respectively.
[0074] In some embodiments, please refer to Figure 1 and Figure 6 As shown, the pinion shaft 300 has:
[0075] The first tooth 310 is used to mesh with the second tooth 410 of the large gear 400 to achieve the purpose of speed reduction, and its reduction ratio is its gear ratio.
[0076] The first boss 320 is used to install the bearing 930, and it has a clearance fit with the bearing.
[0077] The second boss 330 is used to install the bearing 940, forming a clearance fit, and contains a bushing 810 between it and the first tooth 310 to prevent the pinion shaft 300 from moving axially.
[0078] The third through hole 340 allows the shaft of the tested motor 1000 to pass through, and the third through hole 340 is clearance-fitted with the shaft.
[0079] The third boss 350 is used for axial positioning of the pinion shaft 300, and it contains a radial threaded hole. It can be tightened with screws to abut against the beveled edge 1020 of the shaft of the motor 1000 under test, so that the shaft is fixed to the pinion shaft 300.
[0080] In some embodiments, please refer to Figure 1 and Figure 7 As shown, the large gear 400 has:
[0081] The central through hole 420 is clearance-fitted with the fourth boss 540 of the large gear shaft 500;
[0082] The circular recess 430 is aligned with the pin groove 530 of the large gear shaft 500, and the large gear 400 is fixed to the large gear shaft 500 by means of pins and glue.
[0083] In some embodiments, please refer to Figure 1 and Figure 8 As shown, the large gear shaft 500 has:
[0084] The fifth boss 510 is used to mount the bearing 920, with a clearance fit;
[0085] The sixth boss 520 is used for axial positioning of the large gear shaft 500 and the large gear 400.
[0086] The fourth boss 540 is used to install the large gear 400, the bushing 820 and the bearing 910 in sequence.
[0087] The seventh boss 550 is connected to the torque sensor via a coupling.
[0088] In some embodiments, please refer to Figure 1As shown, the multiple support tubes specifically include support tube 610 and support tube 620, both of which are hollow cylinders. Their inner diameters are larger than the threaded outer diameters of screws 710 and 720, respectively. Both ends of support tube 610 and support tube 620 have a high degree of perpendicularity to their corresponding central axis.
[0089] In some embodiments, please refer to Figure 1 As shown, the screws include screw 710 for fixing support tube 610, screw 720 for fixing support tube 620, screw 730 for fixing sliding seat 1200, and screw 740 for fixing motor 1000 under test.
[0090] In some embodiments, please refer to Figure 1 , Figure 9 and Figure 10 As shown, the plurality of bushings includes bushing 810 sleeved on the pinion shaft 300 and bushing 820 sleeved on the gear shaft 500. Bushing 820 is a hollow cylinder. Bushing 810 has:
[0091] With an outer diameter of 812, smaller than the bearing inner ring, it is used for axial positioning.
[0092] The inner diameter is 813, and the small gear shaft 300 can pass through in the middle, forming a clearance fit;
[0093] The eighth boss 811 has an outer diameter smaller than the root of the first tooth 310 of the pinion shaft 300.
[0094] In some embodiments, please refer to Figure 11 As shown, the tested motor 1000 has: a mounting threaded hole 1010 and a shaft bevel 1020.
[0095] In some embodiments, please refer to Figure 1 and Figure 12 As shown, the motor mount 1100 has:
[0096] The arc surface 1110 has the same outer diameter as the motor under test 1000 and is in contact with the motor under test 1000. It is used to support the weight of the motor under test 1000 and prevent the concentricity of the shaft from being affected by the excessive weight of the motor under test 1000.
[0097] The fourth through hole 1120 allows the motor base 1100 to be fixed to the mounting hole 1260 of the sliding seat 1200 by screws.
[0098] In some embodiments, please refer to Figure 1 and Figure 13 As shown, the slide block 1200 has:
[0099] The fourth bearing hole 1210 is used to install bearing 930;
[0100] The second threaded hole 1220 is used to install the support tube 620 and the screw 720;
[0101] The fifth through hole 1230 allows the tested motor 1000 to be fixed with screws.
[0102] The second surface 1240 contacts the first surface 160 of the base frame 100 and is used for axial positioning of the pinion shaft 300.
[0103] The third threaded hole 1250 is used to install screw 730. When the screw is tightened, it can be used to fix the base 100 and the sliding seat 1200. When the screw is loosened, it can move left and right with the slot 130. By replacing the pinion shaft 300 or the gear 400, different gear ratios can be obtained, thereby achieving different reduction ratios. The meshing of the pinion shaft 300 and the gear 400 is achieved by the left and right movement of the sliding seat 1200 and the slot 130.
[0104] In summary, the working principle of the variable reduction ratio torque testing platform provided in this application embodiment is as follows:
[0105] The motor under test 1000 is fixed to the sliding seat 1200 with screws. The motor seat 1100 is fixed to the sliding seat 1200 and can support the motor under test 1000. Bearings 920 and 930 are fixed to the base frame 100 and the sliding seat 1200 respectively. The pinion shaft 300 is installed inside the bearing 930, and the shaft of the motor under test 1000 passes through the inside of the pinion shaft 300 and is fixed radially with screws. The bushing 810 passes through the pinion shaft 300. The large gear shaft 500 is installed inside the bearing 920. The large gear 400 and the bushing 910 pass through the large gear shaft 500 in sequence. Screws 710 and 720 are fixed to the base frame 100 and the sliding seat 1200 respectively through the bearing seat 210 with bearing 910 and the bearing seat 220 with bearing 940, the support tube 610 and the support tube 620.
[0106] When the tested motor 1000 rotates, its shaft drives the pinion shaft 300 to rotate at the same speed. The pinion shaft 300 meshes with the large gear 400, and after reduction, the speed is reduced to the large gear 400. The large gear 400 drives the large gear shaft 500 to rotate, and the speed is transmitted to the torque sensor through the coupling. When the reduction ratio needs to be changed, different gear ratios can be obtained by replacing the pinion shaft 300 or the large gear 400, thus achieving the effect of different reduction ratios. The meshing of the pinion shaft 300 and the large gear 400 is achieved by the left and right movement of the sliding seat 1200 and the slot 130.
[0107] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.
Claims
1. A torque testing platform with a variable reduction ratio, characterized in that, include: Base frame (100), bearing housing (210, 220), pinion shaft (300), large gear (400), large gear shaft (500), support tube (610, 620), screws (710, 720, 730, 740), bushing (810, 820), bearings (910, 920, 930, 940), motor under test (1000), motor housing (1100), and sliding seat (1200); When the motor under test (1000) rotates, its shaft drives the pinion shaft (300) to rotate at the same speed. The pinion shaft (300) meshes with the large gear (400). After deceleration, it is transmitted to the large gear (400). The large gear (400) drives the large gear shaft (500) to rotate and transmits the torque to the torque sensor through the coupling. Different gear ratios can be obtained by replacing the pinion shaft (300) or the gear (400).
2. The torque testing platform with a variable reduction ratio according to claim 1, characterized in that, The base frame (100) is equipped with: The first bearing hole (110) can accommodate the bearing (920). The screw (710) can be fixed by corresponding to the first threaded hole (120) of the bearing housing (210) one by one with the first through hole (212); The slot (130) allows the screw (730) to be fixed to the third threaded hole (1250) of the sliding seat (1200) through the slot (130). Several countersunk holes (140) are used to fix the device to other equipment with screws; The raised plane (150) is used to reduce the planar area between the base frame (100) and the bearing housing (210); The first surface (160) contacts the second surface (1240) of the slide (1200) to improve the installation stability of the slide (1200).
3. The torque testing platform with a variable reduction ratio according to claim 1, characterized in that, The bearing housing (210) and bearing housing (220) have a second bearing hole (211) and a third bearing hole (221) respectively, which can be used to install bearings (910) and bearings (940); they also have a first through hole (212) and a second through hole (222) respectively, the diameter of which is larger than the thread diameter of screw (710) and screw (720) respectively, and smaller than the head diameter of screw (710) and screw (720) respectively.
4. The torque testing platform with a variable reduction ratio according to claim 1, characterized in that, The pinion shaft (300) has: The first tooth (310) is used to mesh with the second tooth (410) of the large gear (400) to achieve the purpose of speed reduction, and its speed reduction ratio is its tooth ratio; The first boss (320) is used to mount the bearing (930) and is clearance-fitted with it; The second boss (330) is used to install the bearing (940) with a clearance fit, and contains a bushing (810) between it and the first tooth (310) to prevent the pinion shaft (300) from moving axially. The third through hole (340) allows the shaft of the motor (1000) under test to pass through, and the third through hole (340) is clearance-fitted with the shaft; The third boss (350) is used for axial positioning of the pinion shaft (300), and it has a radial threaded hole. It can be tightened by screws to abut against the shaft bevel (1020) of the motor under test (1000), so that the shaft is fixed to the pinion shaft (300).
5. The torque testing platform with a variable reduction ratio according to claim 1, characterized in that, The large gear (400) has: The central through hole (420) is clearance-fitted with the fourth boss (540) of the large gear shaft (500); A circular recess (430) is aligned with the pin groove (530) of the large gear shaft (500) and is fixed to the large gear (400) by means of pins and glue.
6. The torque testing platform with a variable reduction ratio according to claim 1, characterized in that, The large gear shaft (500) has: The fifth boss (510) is used to mount the bearing (920) with a clearance fit; The sixth boss (520) is used for axial positioning of the large gear shaft (500) and the large gear (400); The fourth boss (540) is used to install the large gear (400), bushing (820) and bearing (910) in sequence. The seventh boss (550) is connected to the torque sensor via a coupling.
7. The torque testing platform with a variable reduction ratio according to claim 1, characterized in that, Both the support tube (610) and the support tube (620) are hollow cylinders, and their inner diameters are larger than the thread outer diameters of the screw (710) and the screw (720), respectively.
8. The torque testing platform with a variable reduction ratio according to claim 1, characterized in that, A bushing (810) is fitted onto the pinion shaft (300), and a bushing (820) is fitted onto the large gear shaft (500). The bushing (820) is a hollow cylinder. The bushing (810) has the following characteristics: The outer diameter (812) is smaller than the inner ring of the bearing and is used for axial positioning. The inner diameter is (813), and a small gear shaft (300) can pass through it in the middle, forming a clearance fit; The eighth boss (811) has an outer diameter smaller than the root of the first tooth (310) of the pinion shaft (300).
9. A torque testing platform with a variable reduction ratio according to claim 1, characterized in that, The motor mount (1100) has: The arc surface (1110) has the same outer diameter as the motor under test (1000) and is in contact with the motor under test (1000) to support the weight of the motor under test (1000); The fourth through hole (1120) allows the motor base (1100) to be fixed to the mounting hole (1260) of the sliding seat (1200) by screws.
10. A torque testing platform with a variable reduction ratio according to claim 1, characterized in that, The slide block (1200) has: The fourth bearing hole (1210) is used to install the bearing (930). The second threaded hole (1220) is used to install the support tube (620) and screw (720). The fifth through hole (1230) allows the motor under test (1000) to be fixed with screws. The second surface (1240) contacts the first surface (160) of the base frame (100) and is used for axial positioning of the pinion shaft (300); The third threaded hole (1250) is used to install screws (730). When the screws are tightened, they can be used to fix the base frame (100) and the sliding seat (1200). When the screws are loosened, they can move left and right with the slot (130). By changing the pinion shaft (300) or the gear (400), different gear ratios can be obtained, thereby achieving different reduction ratios. The meshing of the pinion shaft (300) and the gear (400) is achieved by the sliding seat (1200) and the slot (130) moving left and right in coordination.