A spring torque measuring device

Abstract

The present invention discloses a spring torque measuring device, comprising a lower base, an upper base and a wheel disc, wherein the lower base and the upper base are both of an "L"-shaped structure, and the upper base is fixed on the lower base, a first positioning shaft is fixedly connected to the upper part of the upper base, a core shaft is fixedly connected to the inner end of the first positioning shaft, and a second fixing hole arranged along the axial direction is opened at the inner end of the first positioning shaft. The present invention measures the spring torque by hanging weights on the hanging holes on the wheel disc, and the spring torque is equal to the sum of the torques of the various weights acting on the wheel disc. For springs of different specifications and lengths, the distance between the upper base and the lower base can be adjusted to achieve the distance between the first positioning shaft and the second positioning shaft to achieve the measurement of the torque value. Therefore, the present invention can more accurately measure the torque values ​​of various springs at different angles.

Description

Technical Field

[0001] The invention relates to a spring torque measuring device, belonging to the technical field of spring torque measurement. Background Art

[0002] In the design process of spring torque measurement, it is necessary to consider the torque size of springs of different specifications at various angles. Therefore, when designing the measuring device, it is necessary to ensure three basic requirements: 1. Springs of different lengths and specifications can be measured with the same measuring device as much as possible; 2. The angle of spring rotation can be read during the measurement process; 3. The torque size can be measured more accurately. However, the existing spring torque measuring device cannot meet the above three basic requirements at the same time. Summary of the invention

[0003] The purpose of the present invention is to provide a spring torque measuring device, which can accurately measure the torque values ​​of various springs at different angles.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a spring torque measuring device, comprising a lower base, an upper base and a wheel disc, the lower base and the upper base are both "L"-shaped structures, and the upper base is fixed on the lower base, a first positioning shaft is fixedly connected to the upper part of the upper base, a core shaft is fixedly connected to the inner end of the first positioning shaft, a second fixing hole arranged along the axial direction is opened at the inner end of the first positioning shaft, a bearing is fixedly installed on the upper part of the lower base, a rotating shaft is fixedly installed on the inner ring of the bearing, a second positioning shaft is fixedly connected to the inner end of the rotating shaft, a first fixing hole arranged along the axial direction is opened at the inner end of the second positioning shaft, a wheel disc is fixedly connected to the outer end of the rotating shaft, a group of hanging holes are evenly distributed on the circumference of the wheel disc, angle scale lines are arranged on the wheel disc, and a pointer corresponding to the angle scale lines is fixedly installed on the top of the lower base.

[0005] Furthermore, the first positioning shaft is fixed to the upper part of the upper base by a second screw, and a first flat key is installed between the first positioning shaft and the upper base; the wheel disc is fixed to the rotating shaft by a fourth screw, and a second flat key is installed between the rotating shaft and the wheel disc; a first fixing hole and a mounting hole are respectively provided at both ends of the second positioning shaft, the second positioning shaft is sleeved on the rotating shaft through the mounting hole, and a third flat key is installed between the rotating shaft and the second positioning shaft.

[0006] Furthermore, a protective cover is provided above the lower base and the upper base.

[0007] Further, the diameter of the first positioning shaft is greater than the diameter of the core shaft.

[0008] Furthermore, a limiting groove is provided on the lower base, a boss slidably matched with the limiting groove is provided at the bottom of the upper base, and strip holes are symmetrically provided on both sides of the bottom of the upper base. After the first screw passes through the strip hole, the upper base is fixed to the lower base.

[0009] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention measures the spring torque by hanging weights on the hanging holes on the wheel, and the spring torque is equal to the sum of the torques of the various weights acting on the wheel. At the same time, as the number of weights increases, the rotation angle of the spring increases. By adding or subtracting weights and recording the weight and angle of the weights when the wheel rotates to the corresponding angle, the torque value of the spring at different angles can be calculated. For springs of different specifications and lengths, the distance between the upper base and the lower base can be adjusted to achieve the distance between the first positioning axis and the second positioning axis to achieve the measurement of the torque value. Therefore, the present invention can more accurately measure the torque values ​​of various springs at different angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a cross-sectional view of a schematic structural diagram of the present invention;

[0011] Figure 2 It is a top view of the structural schematic diagram of the present invention;

[0012] Figure 3 yes Figure 1 AA cross-section diagram;

[0013] Figure 4 yes Figure 3 The enlarged view of point D;

[0014] Figure 5 yes Figure 1 The enlarged view of point B;

[0015] Figure 6 yes Figure 1 Enlarged view of point C;

[0016] Figure 7 It is a schematic diagram of the structure of the present invention during measurement;

[0017] Figure 8 yes Figure 7 EE cross-section diagram.

[0018] Explanation of the accompanying drawings: 1-first screw, 2-first fixing hole, 3-upper base, 4-second screw, 5-first flat key, 6-second fixing hole, 7-first positioning shaft, 8-core shaft, 9-third flat key, 10-second positioning shaft, 11-weight reduction hole, 12-third screw, 13-pointer, 14-rotating shaft, 15-wheel, 16-fourth screw, 17-hanging hole, 18-second flat key, 19-bearing, 20-lower base, 21-protective cover, 22-angle scale line, 23-limiting groove, 24-bar hole, 25-spring to be tested, 26-platform, 27-pressure block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0020] See also Figures 1 to 6A spring torque measuring device of the present invention comprises a lower base 20, an upper base 3 and a wheel 15, wherein the lower base 20 and the upper base 3 are both L-shaped structures, and the upper base 3 is fixed on the lower base 20, a first positioning shaft 7 is fixedly connected to the upper part of the upper base 3, a core shaft 8 is fixedly connected to the inner end of the first positioning shaft 7, and the diameter of the first positioning shaft 7 is greater than the diameter of the core shaft 8; a second fixing hole 6 arranged in the axial direction is opened at the inner end of the first positioning shaft 7, and a second fixing hole 6 is arranged in the axial direction at the lower base 20. A bearing 19 is fixedly installed on the upper part, a rotating shaft 14 is fixedly installed on the inner ring of the bearing 19, a second positioning shaft 10 is fixedly connected to the inner end of the rotating shaft 14, a first fixing hole 2 arranged along the axial direction is opened at the inner end of the second positioning shaft 10, a wheel disc 15 is fixedly connected to the outer end of the rotating shaft 14, a group of hanging holes 17 are evenly distributed on the circumference of the wheel disc 15, an angle scale line 22 is arranged on the wheel disc 15, and a pointer 13 corresponding to the angle scale line 22 is fixedly installed on the top of the lower base 20. The first positioning shaft 7 is fixed to the upper part of the upper base 3 by the second screw 4, and a first flat key 5 is installed between the first positioning shaft 7 and the upper base 3; the wheel disc 15 is fixed to the rotating shaft 14 by the fourth screw 16, and a second flat key 18 is installed between the rotating shaft 14 and the wheel disc 15; the first fixing hole 2 and the mounting hole are respectively opened at both ends of the second positioning shaft 10, the second positioning shaft 10 is sleeved on the rotating shaft 14 through the mounting hole, and a third flat key 9 is installed between the rotating shaft 14 and the second positioning shaft 10. A protective cover 21 is arranged above the lower base 20 and the upper base 3 to prevent the spring 25 to be tested from popping out and injuring people during measurement, thereby improving safety. A limiting groove 23 is arranged on the lower base 20, and a boss that slides with the limiting groove 23 is arranged at the bottom of the upper base 3. Bar holes 24 are symmetrically opened on both sides of the bottom of the upper base 3, and the first screw 1 passes through the bar hole 24 to fix the upper base 3 on the lower base 20.

[0021] See also Figure 7 and Figure 8 , the measurement process of the present invention is as follows:

[0022] a) First, arrange a platform 26, and adjust the horizontality of the plane on the platform 26, and then use the pressure block 27 to press on the upper base 3, so as to fix the entire measuring device on the platform 26. For springs of different specifications and lengths, the distance between the upper base 3 and the lower base 20 can be adjusted to adjust the distance between the first positioning axis 7 and the second positioning axis 10 to achieve the measurement of the torque value. When adjusting, first loosen the first screw 1, and then slide the upper base 3 along the limit groove 23, and tighten the first screw 1 after adjustment. Finally, put the spring 25 to be tested on the core shaft 8, and insert the two ends of the spring 25 to be tested into the second fixing hole 6 on the first positioning axis 7 and the first fixing hole 2 on the second positioning axis 10, respectively, so as to complete the installation of the spring 25 to be tested.

[0023] b) Hang a weight in the hanging hole 15 on the wheel 15 to rotate the wheel 15, and observe the angle scale line 22 on the wheel 15 at the same time, and the wheel 15 rotates from the zero scale to the corresponding angle position.

[0024] c) Record the weight and angle of the weight when the wheel 15 rotates to a specified angle, and then calculate the torque of the spring 25 to be tested when it rotates to the specified angle.

[0025] d) For the measurement of small torque springs, a spring scale can be hung on the force application point Mg of the wheel to directly measure the torque of the spring.

[0026] The spring torque calculation formula is as follows:

[0027]

[0028] Where: Mg is the weight of the weight;

[0029] L is the distance from the force application point Mg to the center of the wheel;

[0030] θ is the angle between the force application point Mg and the distance L.

[0031] In summary, the present invention has a simple structure, is easy to disassemble and assemble, has a low secondary modification cost, has a large spring torque measurement range, and is easy to implement; the measurement method is simple and can more accurately measure the spring torque.

Claims

1. A spring torque measuring device, comprising a lower base (20), an upper base (3) and a wheel (15), characterized in that: The lower base (20) and the upper base (3) are both L-shaped structures, and the upper base (3) is fixed on the lower base (20). A first positioning shaft (7) is fixedly connected to the upper part of the upper base (3), a core shaft (8) is fixedly connected to the inner end of the first positioning shaft (7), a second fixing hole (6) arranged along the axial direction is opened at the inner end of the first positioning shaft (7), a bearing (19) is fixedly installed on the upper part of the lower base (20), and a rotating shaft is fixedly installed on the inner ring of the bearing (19). (14), a second positioning shaft (10) is fixedly connected to the inner end of the rotating shaft (14), a first fixing hole (2) arranged along the axial direction is opened at the inner end of the second positioning shaft (10), a wheel disc (15) is fixedly connected to the outer end of the rotating shaft (14), a group of hanging holes (17) are evenly distributed on the circumference of the wheel disc (15), an angle scale line (22) is arranged on the wheel disc (15), and a pointer (13) corresponding to the angle scale line (22) is fixedly installed on the top of the lower base (20); The lower base (20) is provided with a limit groove (23), the bottom of the upper base (3) is provided with a boss that slidably cooperates with the limit groove (23), and strip holes (24) are symmetrically provided on both sides of the bottom of the upper base (3), and the first screw (1) passes through the strip hole (24) to fix the upper base (3) on the lower base (20); The first positioning shaft (7) is fixed to the upper part of the upper base (3) by a second screw (4), and a first flat key (5) is installed between the first positioning shaft (7) and the upper base (3); the wheel disc (15) is fixed to the rotating shaft (14) by a fourth screw (16), and a second flat key (18) is installed between the rotating shaft (14) and the wheel disc (15); the second positioning shaft (10) is respectively provided with a first fixing hole (2) and a mounting hole at both ends, the second positioning shaft (10) is sleeved on the rotating shaft (14) through the mounting hole, and a third flat key (9) is installed between the rotating shaft (14) and the second positioning shaft (10).

2. The spring torque measuring device according to claim 1, characterized in that: A protective cover (21) is provided above the lower base (20) and the upper base (3).

3. The spring torque measuring device according to claim 1, characterized in that: The diameter of the first positioning shaft (7) is greater than the diameter of the core shaft (8).

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