Transmission shaft torsion angle testing machine

Abstract

The utility model belongs to the field of torsion testing machines, and particularly relates to a transmission shaft torsion testing machine which comprises a working platform, a driving device, a torque sensor, a transmission device, a clamping device and a torsion angle sensor. One end of the torque sensor is connected with the driving device, the other end of the torque sensor is connected with one end of the transmission device, the other end of the transmission device is connected with one end of a transmission shaft to be tested, the other end of the transmission shaft to be tested is connected with the clamping device, the clamping device is fixedly connected to the working platform, and the clamping device is fixedly connected to the working platform. The torsion angle sensor is fixedly connected to one end, close to the tested transmission shaft, of the transmission device, and the straight line where the driving device and the torsion sensor are located is parallel to the straight line where the tested transmission shaft and the clamping device are located; when the device detects the torsion angle of the shaft, the influence of the deformation of the torque sensor on the measurement result is avoided, and the measurement precision is improved.

Description

Technical Field

[0001] The utility model relates to the field of torsion testing machines, in particular to a transmission shaft torsion angle testing machine. Background Art

[0002] The static torsion test of the transmission shaft is a test method for evaluating the static torsion strength of the transmission shaft assembly. The following are the steps of the test: 1. Install the reference surface of the transmission shaft assembly on the transmission shaft torsion testing machine in a standard state. 2. Perform a static torsion rigidity test, apply torque to the transmission shaft in a certain direction, apply the torque until the rated load is reached, and then return to the original state. At the same time, apply torque in a certain direction for testing, add the torque to the rated load, and then unload it to zero load, and use the detection device to automatically record the torque and its corresponding torsion angle (or load and unload step by step and record the torque and its corresponding torsion angle). The test results are recorded and the static torsion stiffness of the transmission shaft is calculated. In the existing torsion test, the device for applying torque, the torque sensor and the shaft to be measured are located on the same straight line. When the torque is applied, the torque sensor will also deform, and the deformation generated by the torque sensor will be reflected in the deformation of the transmission shaft. When measuring, the measured data is the result of the mutual influence of the deformation angles of the two parts, which affects the accuracy of the test data.

[0003] In order to solve the above problems, a transmission shaft torsion testing machine is proposed. Utility Model Content

[0004] The utility model aims at the above-mentioned problems and specifically designs a transmission shaft torsion angle testing machine, so that when detecting the torsion angle of the transmission shaft, the influence of the torque sensor deformation on the measurement result can be avoided, thereby improving the measurement accuracy.

[0005] To achieve the above-mentioned purpose, the utility model provides a transmission shaft torsion angle testing machine, comprising: a working platform, a driving device, a torque sensor, a transmission device, a clamping device and a torsion angle sensor, wherein the driving device and the transmission device are fixedly connected to the working platform, one end of the torque sensor is connected to the driving device, and the other end is connected to one end of the transmission device, the other end of the transmission device is connected to one end of the transmission shaft to be measured, and the other end of the transmission shaft to be measured is connected to the clamping device, the clamping device is fixedly connected to the working platform, the torsion angle sensor is fixedly connected to one end of the transmission device close to the transmission shaft to be measured, and the straight line where the driving device and the torque sensor are located is parallel to the straight line where the transmission shaft to be measured and the clamping device are located.

[0006] In the above manner, the torque sensor and the drive shaft to be measured are placed on different straight lines, and the torque is transmitted through the transmission device, so that the deformation of the torque sensor cannot affect the deformation of the drive shaft, thereby measuring the accurate torsion angle of the drive shaft.

[0007] Furthermore, the transmission device includes a cylindrical roller bearing and a chain. The cylindrical roller bearing is supported and installed on the working platform. The cylindrical roller bearing is connected to the chain through a gear. Both ends of the chain are connected to the cylindrical roller bearing and the gear. The cylindrical roller bearings at both ends are respectively connected to the torque sensor and the transmission shaft to be measured.

[0008] Furthermore, the driving device includes a servo motor and a reducer, the servo motor is fixedly connected to the working platform, the output end of the servo motor is connected to the reducer, and the other end of the reducer is connected to the torque sensor.

[0009] Furthermore, the clamping device includes a tailstock and a chuck, the tailstock is installed on the working platform, the chuck is fixedly connected to the upper part of the tailstock, and the chuck is connected to the measured transmission shaft.

[0010] Through the above method, the gear chain transmits the power of the driving device to the transmission shaft and drives the transmission shaft to rotate. The clamping device end can clamp the transmission shaft. Under the action of torque, the transmission shaft deforms and a torsion angle occurs, and the torsion angle sensor records the data.

[0011] Furthermore, the working platform includes a guide rail, and the clamping device also includes a tailstock moving motor. The tailstock is slidably connected to the guide rail, and the tailstock moving motor is fixedly connected to the working platform. The output end of the tailstock moving motor is connected to the working platform through a screw mechanism.

[0012] Furthermore, the working platform also includes a protective cover, which is supported on the working platform and located above the measured transmission shaft.

[0013] Furthermore, the working platform also includes a support rod, one end of which is connected to the working platform, and the other end of which is supported and arranged below the transmission shaft to be measured.

[0014] In summary, the utility model has the following advantages and beneficial technical effects:

[0015] The utility model discloses a transmission shaft torsion angle testing machine which can avoid the deformation of the torque sensor during operation, thereby preventing the influence on the torsion angle data of the tested part, thereby improving the detection accuracy, and can accurately transfer power through the transmission mode of the gear chain, thereby avoiding the influence of the torque sensor through a simple structure; the device has a simple structure, and each component is easy to maintain; through the sliding effect of the base, the effect of measuring transmission shafts of different lengths can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 It is a front view of a transmission shaft torsion angle testing machine of the utility model;

[0018] Figure 2 It is a structural schematic diagram of a transmission shaft torsion angle testing machine of the utility model;

[0019] Figure 3 It is a schematic diagram of the traditional test structure in this field;

[0020] Figure 4 The utility model Figure 1 A magnified view of middle;

[0021] Figure 5 The utility model is a transmission schematic diagram of a tailstock of a transmission shaft torsion angle testing machine.

[0022] The reference numerals in the accompanying drawings are:

[0023] 1-working platform; 11-protective cover; 12-support rod; 13-guide rail;

[0024] 2-driving device; 21-servo motor; 22-reducing machine;

[0025] 3-torque sensor; 4-transmission device; 41-cylindrical roller bearing; 42-chain;

[0026] 5-clamping device; 51-tailstock; 52-chuck; 53-tailstock moving motor;

[0027] 6-transmission shaft to be measured; 7-torsion angle sensor; 8-screw mechanism. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-Figure 5The utility model is further described in detail, and examples of embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and should not be construed as limiting the utility model.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, it can be a mechanical connection or an electrical connection, it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the description of this embodiment, the terms "upper", "lower", "right", etc., and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying 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 utility model. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning. The parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0031] like Figure 1 , Figure 2 and Figure 3 As shown, it includes: a working platform 1, a driving device 2, a torque sensor 3, a transmission device 4, a clamping device 5 and a torsion angle sensor 7. The driving device 2 and the transmission device 4 are fixedly connected to the working platform 1 by bolts. One end of the torque sensor 3 is connected to the driving device 2 by an axis, and the other end is connected to one end of the transmission device 4 by an axis. The other end of the transmission device 4 is connected to one end of the measured transmission shaft 6, and the other end of the measured transmission shaft 6 is connected to the clamping device 5. The clamping device 5 is fixedly connected to the working platform 1. The torsion angle sensor 7 is fixedly connected to one end of the transmission device 4 close to the measured transmission shaft 6. The straight line where the driving device 2 and the torque sensor 3 are located is parallel to the straight line where the measured transmission shaft 6 and the clamping device 5 are located.

[0032] like Figure 2As shown, the transmission device 4 includes a cylindrical roller bearing 41 and a chain 42. The cylindrical roller bearing 41 is supported and installed on the working platform 1 through a bracket. The cylindrical roller bearing 41 is connected to the chain 42 through a gear. Both ends of the chain 42 are connected with a cylindrical roller bearing 41 and a gear. The cylindrical roller bearings 41 at both ends are respectively connected to the torque sensor 3 and the measured transmission shaft 6.

[0033] like Figure 1 and Figure 2 As shown, the driving device 2 includes a servo motor 21 and a reducer 22. The servo motor 21 is fixedly connected to the working platform 1 by bolts. The output end of the servo motor 21 is connected to the reducer 22. The other end of the reducer 22 is connected to the torque sensor 3 through a shaft.

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, the clamping device 5 includes a tailstock 51 and a chuck 52. The tailstock 51 is installed on the working platform 1. The chuck 52 is fixedly connected to the upper part of the tailstock 51. The chuck 52 is connected to the measured transmission shaft 6. The chuck 52 is a claw-shaped structure that can clamp the transmission shaft.

[0035] like Figure 1 , Figure 2 and Figure 5 As shown, the working platform 1 includes a guide rail 13, which is fixedly connected to the working platform 1 by bolts. The clamping device 5 also includes a tailstock moving motor 53. The tailstock 51 is slidably connected to the guide rail 13. The tailstock moving motor 53 is fixedly connected to the working platform 1. The output end of the tailstock moving motor 53 is connected to the tailstock 51 through a screw mechanism 8, and the screw mechanism 8 is fixedly connected to the working platform 1.

[0036] The working platform 1 further comprises a protective cover 11 , which is supported on the working platform 1 and is located above the transmission shaft 6 to be tested.

[0037] The working platform 1 also includes a support rod 12, one end of which is connected to the working platform 1, and the other end of the support rod 12 is supported and arranged below the measured transmission shaft 6. The support rod 12 is a cylinder that can be extended and adapted to transmission shafts of different diameters.

[0038] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A transmission shaft torsion angle testing machine, characterized in that: include: A working platform (1), a driving device (2), a torque sensor (3), a transmission device (4), a clamping device (5) and a torsion angle sensor (7), wherein the driving device (2) and the transmission device (4) are fixedly connected to the working platform (1), one end of the torque sensor (3) is connected to the driving device (2), and the other end is connected to one end of the transmission device (4), the other end of the transmission device (4) is connected to one end of a transmission shaft (6) to be measured, the other end of the transmission shaft (6) to be measured is connected to the clamping device (5), the clamping device (5) is fixedly connected to the working platform (1), the torsion angle sensor (7) is fixedly connected to one end of the transmission device (4) close to the transmission shaft (6) to be measured, and the straight line where the driving device (2) and the torque sensor (3) are located is parallel to the straight line where the transmission shaft (6) to be measured and the clamping device (5) are located.

2. A transmission shaft torsion angle testing machine according to claim 1, characterized in that: The transmission device (4) comprises a cylindrical roller bearing (41) and a chain (42); the cylindrical roller bearing (41) is supported and mounted on the working platform (1); the cylindrical roller bearing (41) is connected to the chain (42) via a gear; both ends of the chain (42) are connected to the cylindrical roller bearing (41) and the gear; the cylindrical roller bearings (41) at both ends are respectively connected to the torque sensor (3) and the transmission shaft (6) to be measured.

3. A transmission shaft torsion angle testing machine according to claim 1, characterized in that: The driving device (2) comprises a servo motor (21) and a reducer (22); the servo motor (21) is fixedly connected to the working platform (1); the output end of the servo motor (21) is connected to the reducer (22); and the other end of the reducer (22) is connected to the torque sensor (3).

4. A transmission shaft torsion angle testing machine according to claim 1, characterized in that: The clamping device (5) comprises a tailstock (51) and a chuck (52); the tailstock (51) is mounted on the working platform (1); the chuck (52) is fixedly connected to the upper part of the tailstock (51); and the chuck (52) is connected to the transmission shaft (6) to be measured.

5. A transmission shaft torsion angle testing machine according to claim 4, characterized in that: The working platform (1) comprises a guide rail (13), wherein the guide rail (13) is fixedly connected to the working platform (1); the clamping device (5) further comprises a tailstock moving motor (53), wherein the tailstock (51) is slidably connected to the guide rail (13), the tailstock moving motor (53) is fixedly connected to the working platform (1), and an output end of the tailstock moving motor (53) is connected to the tailstock (51) via a screw mechanism (8).

6. A transmission shaft torsion angle testing machine according to claim 1, characterized in that: The working platform (1) further comprises a protective cover (11), wherein the protective cover (11) is supported and arranged on the working platform (1) and is located above the transmission shaft (6) to be tested.

7. A transmission shaft torsion angle testing machine according to claim 1, characterized in that: The working platform (1) further comprises a support rod (12), one end of the support rod (12) being connected to the working platform (1), and the other end of the support rod (12) being supported and arranged below the transmission shaft (6) to be tested.

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