Holding torque force measuring rod with fine adjustment function

Abstract

The utility model discloses a holding torque measuring rod with fine tuning, and relates to the technical field of measuring devices. The holding torque measuring rod with fine tuning comprises a base and a torque holding test assembly, the torque holding test assembly is arranged above the base, the torque holding test assembly comprises a motor base, and the motor base is fixedly connected to the upper end of the base; wherein the upper end of the motor base is fixedly provided with a tested motor, the output end of the tested motor is fixedly connected with a dynamometric rod, the upper end of the dynamometric rod is slidably sleeved with a movable weight, the left end of the dynamometric rod is sleeved with a standard weight, and when the movable weight moves towards the standard weight hanging end, the torque is increased; on the contrary, the torque is reduced, the position of the movable weight is changed, the torque can be finely adjusted conveniently, the torque of the tested motor can be accurately measured conveniently, the fixed standard weight and the movable weight are adopted for testing, the testing time is short, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring devices, in particular to a retaining torque force measuring rod with fine adjustment. Background Art

[0002] The holding torque of tiny motors is usually tested by hanging weights, which is troublesome to add or adjust weights. For motors that can only maintain torque when powered on, the test time should be as short as possible. If the test time is too long, the motor will heat up and affect the size of the holding torque. A long test time will affect the test results, and adding or reducing weights is cumbersome.

[0003] However, the length of the lever arm of existing equipment is fixed, and weights need to be added and subtracted continuously, which is labor-intensive, inefficient, and prone to errors. If too many weights are added, the center of gravity of the overall weights may deviate from the lever arm length, resulting in inaccurate measurement of the holding torque. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a holding torque force measuring rod with fine adjustment, which can solve the problem that the length of the force arm of the existing equipment is fixed, and weights need to be constantly added or subtracted, which results in a large workload, low efficiency and easy errors; if too many weights are added, it is easy to cause the center of gravity of the overall weight to deviate from the position of the force arm length, resulting in inaccurate measurement of the holding torque.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a torque measuring rod with fine adjustment, comprising a base,

[0006] A torque holding test assembly, the torque holding test assembly is arranged above the base, the torque holding test assembly comprises a motor seat, and the motor seat is fixedly connected to the upper end of the base;

[0007] The motor to be tested is fixedly mounted on the upper end of the motor seat, a force measuring rod is fixedly connected to the output end of the motor to be tested, a movable weight is slidably sleeved on the upper end of the force measuring rod, and a standard weight is sleeved on the left end of the force measuring rod.

[0008] Preferably, the surface of the force measuring rod is etched with scale lines, and a groove line is provided on a side of the movable weight close to the scale lines.

[0009] Preferably, the upper end of the base is fixedly connected to a fixed motor bracket, and the internal thread of the fixed motor bracket is connected to a fixed motor knob;

[0010] Among them, one end of the fixed motor knob close to the motor under test is rotatably connected to the motor fixed block under test, and the motor fixed block under test is in contact with the motor under test.

[0011] Preferably, two limit brackets are symmetrically fixedly connected to the upper end of the base, and the two limit brackets are respectively arranged at the left and right ends of the force measuring rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The torque measuring rod with fine adjustment increases the torque when the movable weight moves toward the standard weight end; conversely, it reduces the torque. Changing the position of the movable weight is convenient for fine adjustment of the torque and accurate measurement of the torque of the motor under test. The fixed standard weight is used in combination with the movable weight for testing, which shortens the test time and improves work efficiency.

[0014] (2) The torque measuring rod with fine adjustment can fix the motor under test by using a motor fixing knob and a motor fixing block, so that the motor under test can remain stable during the test, the torque of the motor under test can be detected, and the stability and accuracy of the motor under test can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the structure of a holding torque force measuring rod with fine adjustment of the utility model;

[0017] Figure 2 This is a schematic diagram of the fixing block of the motor under test of the utility model;

[0018] Figure 3 This is a schematic diagram of the motor under test of the utility model.

[0019] Figure numerals: 1. base; 2. motor seat; 3. motor under test; 4. fixed motor bracket; 5. fixed motor knob; 6. fixed block of motor under test; 7. force measuring rod; 8. scale line; 9. movable weight; 10. groove line; 11. standard weight; 12. limit bracket. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0021] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In the description of the present utility model, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0024] See also Figure 1-3 The utility model provides a technical solution: a torque holding force measuring rod with fine adjustment, including a base 1 and a torque holding test assembly. The torque holding test assembly is arranged above the base 1, and the torque holding test assembly includes a motor base 2, which is fixedly connected to the upper end of the base 1, and a motor 3 to be tested is fixedly installed on the upper end of the motor base 2. The output end of the motor 3 to be tested is fixedly connected to a force measuring rod 7, and a movable weight 9 is slidably sleeved on the upper end of the force measuring rod 7, and a standard weight 11 is sleeved on the left end of the force measuring rod 7.

[0025] The surface of the force measuring rod 7 is etched with scale lines 8 , and a groove line 10 is formed on a side of the movable weight 9 close to the scale lines 8 .

[0026] The upper end of the base 1 is fixedly connected to a fixed motor bracket 4, the internal thread of the fixed motor bracket 4 is connected to a fixed motor knob 5, and the fixed motor knob 5 is rotatably connected to a measured motor fixed block 6 at one end close to the measured motor 3, and the measured motor fixed block 6 is in contact with the measured motor 3.

[0027] Two limit brackets 12 are symmetrically fixedly connected to the upper end of the base 1 , and the two limit brackets 12 are respectively arranged at the left and right ends of the force measuring rod 7 .

[0028] When using the force measuring rod, first fix the motor under test on the surface of the motor seat 2, turn the motor fixing knob 5 to drive the motor under test fixing block 6 to descend, so that the motor under test fixing block 6 contacts the motor under test 3, fix the motor under test 3, and fix the force measuring rod 7 on the output shaft of the motor under test 3, and the force measuring rod 7 needs to be kept horizontal.

[0029] The sliding weight 9 is placed in the middle position, the scale is aligned with the "0" position, and a standard weight 11G1 (grooved line 100g, 20g, 50g, grooved line 10g...) is pre-hung on one end L1 of the force measuring rod 7. The holding torque at this time is: N1=G1*L1.

[0030] For intuitive observation, the weight value (g) of the weight can be made consistent with the value of the torque (mN.m), and the length of the lever arm can be calculated: L1 = N1 / G1 = 1N.m / 1Kg = groove line 1000mN.m / 9.8N = groove line 102.04mm;

[0031] When the movable weight 9 moves toward the end where the standard weight 11 is hung, the torque is increased; otherwise, the torque is reduced. Changing the position of the movable weight 9 facilitates fine-tuning of the torque and accurate measurement of the torque of the motor under test. The fixed standard weight 11 is used in combination with the movable weight 9 for testing, which shortens the test time and improves work efficiency.

[0032] For intuitive observation, the value displayed on the force measuring rod 7 needs to be consistent with the added and subtracted torque value, and at the same time, the length displayed on the force measuring rod needs to be consistent with the standard length unit (cm). The weight of the movable weight 9 needs to be calculated: when the center of gravity of the movable weight is at the 1cm position, the torque generated is 1mN.m; when the center of gravity of the movable weight is at the 2cm position, the torque generated is 2mN.m, .... , calculate the weight of the movable weight: G2 (g) = 1mN.m / groove line 10mm = 0.1N = 0.1*(groove line 1000 / 9.8)g = groove line 10.2g.

[0033] At the same time, the two limit brackets 12 can limit the position of the force measuring rod 7 in time when the force measuring rod 7 deflects. The force measuring rod 7 will contact the limit brackets 12 to prevent the force measuring rod 7 from deflecting too much and affecting the force measuring rod 7 and the motor 3 under test.

[0034] Furthermore, when the movable weight 9 moves toward the end where the standard weight 11 is hung, the torque is increased; otherwise, the torque is reduced. Changing the position of the movable weight 9 facilitates fine-tuning of the torque and accurate measurement of the torque of the motor under test. The fixed standard weight 11 is used in combination with the movable weight 9 for testing, which shortens the test time and improves work efficiency.

[0035] By fixing the motor 3 under test using the fixed motor knob 5 and the motor fixing block 6 under test, the motor 3 under test can be kept stable during the test, and the torque of the motor under test can be detected, thereby improving the stability and accuracy of the motor 3 under test.

[0036] Working principle: When using the force measuring rod, first fix the motor under test on the surface of the motor seat 2, turn the motor fixing knob 5 to drive the motor under test fixing block 6 to descend, so that the motor under test fixing block 6 contacts the motor under test 3, fix the motor under test 3, and fix the force measuring rod 7 on the output shaft of the motor under test 3. The force measuring rod 7 needs to be kept horizontal.

[0037] The sliding weight 9 is placed in the middle position, the scale is aligned with the "0" position, and a standard weight 11G1 (grooved line 100g, 20g, 50g, grooved line 10g...) is pre-hung on one end L1 of the force measuring rod 7. The holding torque at this time is: N1=G1*L1.

[0038] For intuitive observation, the weight value (g) of the weight can be made consistent with the value of the torque (mN.m), and the length of the lever arm can be calculated: L1 = N1 / G1 = 1N.m / 1Kg = groove line 1000mN.m / 9.8N = groove line 102.04mm;

[0039] When the movable weight 9 moves toward the end where the standard weight 11 is hung, the torque is increased; otherwise, the torque is reduced. Changing the position of the movable weight 9 facilitates fine-tuning of the torque and accurate measurement of the torque of the motor under test. The fixed standard weight 11 is used in combination with the movable weight 9 for testing, which shortens the test time and improves work efficiency.

[0040] For intuitive observation, the value displayed on the force measuring rod 7 needs to be consistent with the added and subtracted torque value, and at the same time, the length displayed on the force measuring rod needs to be consistent with the standard length unit (cm). The weight of the movable weight 9 needs to be calculated: when the center of gravity of the movable weight is at the 1cm position, the torque generated is 1mN.m; when the center of gravity of the movable weight is at the 2cm position, the torque generated is 2mN.m, .... , calculate the weight of the movable weight: G2 (g) = 1mN.m / groove line 10mm = 0.1N = 0.1*(groove line 1000 / 9.8)g = groove line 10.2g.

[0041] At the same time, the two limit brackets 12 can limit the position of the force measuring rod 7 in time when the force measuring rod 7 deflects. The force measuring rod 7 will contact the limit brackets 12 to prevent the force measuring rod 7 from deflecting too much and affecting the force measuring rod 7 and the motor 3 under test.

[0042] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A holding torque force measuring rod with fine adjustment, characterized in that: comprising a base (1), A torque holding test assembly, the torque holding test assembly is arranged above the base (1), the torque holding test assembly comprises a motor base (2), and the motor base (2) is fixedly connected to the upper end of the base (1); The upper end of the motor seat (2) is fixedly mounted with a motor to be measured (3), the output end of the motor to be measured (3) is fixedly connected with a force measuring rod (7), the upper end of the force measuring rod (7) is slidably sleeved with a movable weight (9), and the left end of the force measuring rod (7) is sleeved with a standard weight (11).

2. A torque measuring rod with fine adjustment according to claim 1, characterized in that: The surface of the force measuring rod (7) is etched with scale lines (8), and a groove line (10) is provided on one side of the movable weight (9) close to the scale lines (8).

3. A torque measuring rod with fine adjustment according to claim 1, characterized in that: The upper end of the base (1) is fixedly connected to a fixed motor bracket (4), and the internal thread of the fixed motor bracket (4) is connected to a fixed motor knob (5); The end of the fixed motor knob (5) close to the measured motor (3) is rotatably connected to the measured motor fixing block (6), and the measured motor fixing block (6) is in contact with the measured motor (3).

4. A torque measuring rod with fine adjustment according to claim 1, characterized in that: The upper end of the base (1) is symmetrically fixedly connected to two limit brackets (12), and the two limit brackets (12) are respectively arranged at the left and right ends of the force measuring rod (7).

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