Testing device and testing method for adjusting coaxiality of connecting shaft

Abstract

The invention discloses a testing device and a testing method for coaxiality adjustment of a connecting shaft, the testing device comprises a monitoring assembly, the monitoring assembly is used for synchronously rotating along with a transmission shaft assembly, and the monitoring assembly is used for monitoring relative displacement information of the monitoring assembly and the same position of a diaphragm on a diaphragm coupling in the process of one-circle rotation. According to the testing device and the testing method for adjusting the coaxiality of the connecting shaft, the coaxiality deviation is conveniently and accurately measured, and subsequent timely adjustment is facilitated.

Description

Technical Field

[0001] This invention relates to the field of transmission testing technology, and in particular to a testing device and method for adjusting the coaxiality of connecting shafts. Background Technology

[0002] In transmission systems, the output speed of the power shaft is very high. Existing power connection shafts transmit power through diaphragm couplings. The power output shaft and the gearbox power input shaft need to be coaxial. If the coaxiality does not meet the requirements, it will significantly reduce the service life of the intermediate transmission shaft and diaphragm coupling. However, it is difficult to maintain a precise coaxial setting in practice. Small deviations are difficult to observe with the naked eye and cannot be adjusted in time. Summary of the Invention

[0003] The purpose of this invention is to provide a testing device and method for coaxiality adjustment of connecting shafts, so as to solve the problems existing in the prior art, facilitate accurate measurement of coaxiality deviation, and enable timely subsequent adjustment.

[0004] To achieve the above objectives, the present invention provides the following solution: The present invention provides a testing device for coaxiality adjustment of a connecting shaft, including a monitoring component. The monitoring component is used to rotate synchronously with the transmission shaft assembly and to monitor the relative displacement information of itself and the diaphragm at the same position on the diaphragm coupling during one rotation.

[0005] Preferably, the monitoring component includes a first distance monitoring element and a second distance monitoring element. The first distance monitoring element is used to monitor the relative displacement information of itself and the diaphragm on the first diaphragm coupling at one end of the intermediate shaft of the transmission shaft assembly during one rotation. The second distance monitoring element is used to monitor the relative displacement information of itself and the diaphragm on the second diaphragm coupling at the other end of the intermediate shaft of the transmission shaft assembly during one rotation.

[0006] Preferably, both the first distance monitoring element and the second distance monitoring element are disposed on the intermediate shaft and can rotate synchronously with the intermediate shaft. The first distance monitoring element is used to monitor the distance change information between itself and the first bolt on the first diaphragm coupling, and the second distance monitoring element is used to monitor the distance change information between itself and the first bolt on the second diaphragm coupling.

[0007] Preferably, both the first distance monitoring element and the second distance monitoring element are configured as pin-type displacement sensors.

[0008] Preferably, the monitoring component is detachably fixed to the drive shaft assembly.

[0009] Preferably, the system further includes a processing module, which is communicatively connected to the monitoring component and is capable of receiving and processing the monitoring information from the monitoring component.

[0010] The present invention also provides a test method for coaxiality adjustment of connecting shafts, based on the test device for coaxiality adjustment of connecting shafts as described above, comprising the following steps: Obtain deformation displacement information: Rotate the drive shaft assembly one revolution and monitor the deformation displacement information of the diaphragm during the rotation process; Calculate the deviation angle: Obtain the maximum and minimum displacement from the deformation displacement information and calculate the deviation angle.

[0011] Preferably, in the step of calculating the deviation angle, the deviation angle The calculation formula is as follows: ; In the formula, D is The rotation diameter of the measurement point of the monitoring component. To monitor the maximum displacement obtained during one rotation of the component, To monitor the minimum displacement obtained during one rotation of the component.

[0012] Preferably, the method further includes the step of obtaining the deviation direction: determining the deviation direction based on the rotational position with the maximum displacement and the rotational position with the minimum displacement.

[0013] Preferably, in the step of obtaining the deviation direction, the direction of the line connecting the rotational position with the maximum displacement and the rotational position with the minimum displacement is the deviation direction.

[0014] The present invention achieves the following technical effects compared to the prior art: The present invention provides a testing device and method for coaxiality adjustment of connecting shafts. If there is a coaxiality deviation between the shafts on both sides of the diaphragm coupling, the diaphragm will deform under the stress caused by the deviation. As each shaft rotates around its own axis, the diaphragm rotates accordingly, and thus the diaphragm will deform to varying degrees during the rotation. By setting a monitoring component to monitor the relative displacement change information at the same position on the diaphragm, it is clear that the position with the largest deviation opening has the largest relative displacement, and the position with the smallest deviation opening has the smallest deformation displacement. In this way, the coaxial deviation angle information can be calculated based on the maximum and minimum displacement, so that subsequent adjustments can keep the transmission shaft assembly coaxial, reduce the vibration caused by the transmission of different shafts and the sudden reduction in life caused by the deformation load of the diaphragm coupling. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of an existing drive shaft assembly; Figure 2 This is a schematic diagram of a test device for adjusting the coaxiality of a connecting shaft provided in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the installation of the first distance monitoring component provided in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram illustrating the determination of the deviation direction according to Embodiment 1 of the present invention; Figure 5 This is a schematic diagram showing the location of the maximum displacement under a deviation condition, provided in Embodiment 1 of the present invention. Figure 6 for Figure 5 A schematic diagram showing the location of the minimum displacement under the shown deviation condition; Figure 7 for Figure 5 and Figure 6 The diagram shows the calculation of the deviation angle under the given deviation conditions.

[0017] In the figure: 1-Monitoring component; 11-First distance monitoring component; 12-Second distance monitoring component; 2-Drive shaft assembly; 21-First diaphragm coupling; 22-Intermediate shaft; 23-Second diaphragm coupling; 24-First bolt; 25-First shaft; 26-Second shaft; 27-Diaphragm; 28-Second bolt. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] The purpose of this invention is to provide a testing device and method for coaxiality adjustment of connecting shafts, so as to solve the problems existing in the prior art, facilitate accurate measurement of coaxiality deviation, and enable timely subsequent adjustment.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1 This embodiment provides a testing device for adjusting the coaxiality of connecting shafts. Please refer to [link to relevant documentation]. Figure 1-7 It includes a monitoring component 1, which is used to rotate synchronously with the drive shaft assembly 2. The monitoring component 1 is used to monitor the relative displacement information of itself and the diaphragm 27 on the diaphragm coupling during one rotation.

[0022] Among them, such as Figure 1 As shown, the drive shaft assembly 2 includes a first shaft 25, a first diaphragm coupling 21, an intermediate shaft 22, a second diaphragm coupling 23, and a second shaft 26, which are sequentially connected. The first shaft 25 can be the engine input shaft, and the second shaft 26 can be the gearbox output shaft. Both the first diaphragm coupling 21 and the second diaphragm coupling 23 have diaphragms 27. Taking the first diaphragm coupling 21 as an example, its diaphragm 27 is connected to the first shaft 25 and the intermediate shaft 22 via a plurality of circumferentially staggered first bolts 24 and second bolts 28. The plurality of first bolts 24 are fixedly connected to the diaphragm 27 and the first shaft 25, and the plurality of second bolts 28 are fixedly connected to the diaphragm 27 and the intermediate shaft 22. That is, the first bolts 24 are not directly connected to the intermediate shaft 22, and the second bolts 28 are not directly connected to the intermediate shaft 22. The first shaft 25 is directly connected; therefore, if there is a coaxiality deviation between the shafts on both sides of the diaphragm coupling, the diaphragm 27 will deform under the stress caused by the deviation. As each shaft rotates around its own axis, the diaphragm 27 rotates accordingly. Thus, the same position on the diaphragm 27 will deform to different degrees during the rotation. By setting the monitoring component 1 to monitor the relative displacement change information of the same position on the diaphragm 27, it is clear that the position with the largest deviation opening has the largest displacement, and the position with the smallest deviation opening has the smallest deformation displacement. In this way, the coaxial deviation angle information can be calculated based on the maximum and minimum displacement, so that subsequent adjustments can be made to keep the transmission shaft assembly 2 coaxial, reduce the vibration caused by the transmission of different shafts and the sudden reduction in life caused by the deformation load of the diaphragm coupling.

[0023] In an optional embodiment, more preferably, the monitoring component 1 includes a first distance monitoring element 11 and a second distance monitoring element 12. The first distance monitoring element 11 is used to monitor the relative displacement information of itself and the diaphragm 27 on the first diaphragm coupling 21 at one end of the intermediate shaft 22 of the transmission shaft assembly 2 during one rotation. The second distance monitoring element 12 is used to monitor the relative displacement information of itself and the diaphragm 27 on the second diaphragm coupling 23 at the other end of the intermediate shaft 22 of the transmission shaft assembly 2 during one rotation.

[0024] In order to monitor the deviation information between the intermediate shaft 22 and the first shaft 25 and the second shaft 26, the first distance monitoring element 11 and the second distance monitoring element 12 are set to monitor simultaneously for adjustment.

[0025] In the optional scheme of this embodiment, more preferably, the first distance monitoring element 11 and the second distance monitoring element 12 are both disposed on the intermediate shaft 22 and can rotate synchronously with the intermediate shaft 22. The first distance monitoring element 11 is used to monitor the distance change information between itself and the first bolt 24 on the first diaphragm coupling 21, and the second distance monitoring element 12 is used to monitor the distance change information between itself and the first bolt 24 on the second diaphragm coupling 23.

[0026] Among them, with Figure 3 Taking the first distance monitoring element 11 as an example, the first distance monitoring element 11 is fixedly installed on the intermediate shaft 22 and detects the distance change information between it and the first bolt 24 opposite to it. Since the first bolt 24 is connected to the first shaft 25 and not to the intermediate shaft 22, when there is a coaxial deviation between the intermediate shaft 22 and the first shaft 25, the diaphragm 27 will deform under the deviation stress. However, the position of the diaphragm 27 of the measured first bolt 24 will not deform or displace and will always remain in the same rotation plane. However, the second bolt 28 connected to the intermediate shaft 22 will cause the position of the connected diaphragm 27 to deform to compensate for the coaxial deviation under the condition of coaxial deviation. Therefore, during the overall rotation, the first distance monitoring element 11 rotates synchronously around the axis of the intermediate shaft 22, and the first bolt 24 rotates around the axis of the first shaft 25. Since there is a coaxiality deviation between the intermediate shaft 22 and the first shaft 25, the relative distance between the first distance monitoring element 11 and the first bolt 24 opposite to it will change. The amount of change is essentially the same as the amount of deformation displacement of the diaphragm 27 itself. Figure 5 and Figure 6 As shown, the first distance monitoring component 11 can acquire the distance change information between itself and the first bolt 24 during one rotation, and thus can calculate the deviation information between the first shaft 25 and the intermediate shaft 22; similarly, the second distance monitoring component 12 can acquire the distance change information between itself and the first bolt 24 on the second shaft 26 during one rotation, and thus can calculate the deviation information between the second shaft 26 and the intermediate shaft 22.

[0027] In the optional scheme of this embodiment, more preferably, both the first distance monitoring element 11 and the second distance monitoring element 12 are configured as pin-type displacement sensors.

[0028] The probe end of the pin-type displacement sensor can abut against the surface of the first bolt 24. The pin-type displacement sensor itself is fixedly connected to the intermediate shaft 22 to realize the monitoring of the distance change between it and the first bolt 24. In addition, it should be noted that the first distance monitoring component 11 and the second distance monitoring component 12 can also adopt other distance monitoring sensors, such as infrared distance sensors, as long as they can realize the distance monitoring between objects.

[0029] In the optional embodiments of this example, more preferably, the monitoring component 1 is detachably fixed on the transmission shaft assembly 2.

[0030] In order to facilitate the disassembly of the monitoring component 1 after the test is completed, it is set to a detachable connection method, such as adhesive or connection by clamp.

[0031] In the optional embodiments of this example, more preferably, the test device for coaxiality adjustment of the connecting shaft provided in this example further includes a processing module, which is communicatively connected to the monitoring component 1 and is able to receive and process the monitoring information of the monitoring component 1.

[0032] In order to facilitate timely reception and processing of monitoring information from monitoring component 1, a processing module, such as a computer terminal, is set up to receive and process the information from monitoring component 1 wirelessly or via wired means to calculate the deviation angle information. Furthermore, the processing module can visually display the displacement change information corresponding to different rotation angles during the rotation process through images, so as to clearly obtain the rotation position with the maximum displacement and the rotation position with the minimum displacement, thereby facilitating the determination of the deviation direction.

[0033] Example 2 This embodiment provides a test method for coaxiality adjustment of connecting shafts, based on the test device for coaxiality adjustment of connecting shafts as described in Embodiment 1, and includes the following steps: Obtain deformation displacement information: Rotate the drive shaft assembly 2 one revolution, and the monitoring assembly 1 monitors the deformation displacement information of the diaphragm 27 during the rotation process; Calculate the deviation angle: Obtain the maximum and minimum displacement from the deformation displacement information and calculate the deviation angle.

[0034] Furthermore, in the step of calculating the deviation angle, the deviation angle... The calculation formula is as follows: ; In the formula, such as Figure 5-7 As shown, D is The rotation diameter of the measurement point of monitoring component 1, To monitor the maximum displacement obtained during one rotation of component 1, To monitor the minimum displacement during one rotation of component 1, the above formula is used. D To obtain known quantities in advance, the deviation angle information can be obtained after the monitoring component 1 acquires the maximum and minimum displacement.

[0035] Furthermore, the testing method also includes the step of obtaining the deviation direction: determining the deviation direction based on the rotational position with the maximum displacement and the rotational position with the minimum displacement.

[0036] In order to further adjust the coaxiality more precisely, it is necessary not only to determine the deviation angle, but also to determine the deviation direction.

[0037] Furthermore, in the step of obtaining the deviation direction, the direction of the line connecting the rotational position with the maximum displacement (i.e., the maximum displacement point) and the rotational position with the minimum displacement (i.e., the minimum displacement point) is the deviation direction.

[0038] Among them, such as Figure 4 As shown, since the coaxial deviation is the deviation between the intermediate shaft 22 and the first shaft 25 and the second shaft 26 on the same axial section, the maximum displacement point and the minimum displacement point are usually symmetrical about the axis. Therefore, the position of the maximum displacement point is the position of the largest deviation opening. This can determine the direction of the deviation so that the coaxiality can be adjusted by adjusting the installation support later.

[0039] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A testing device for adjusting the coaxiality of connecting shafts, characterized in that: Includes a monitoring component (1), which is used to rotate synchronously with the drive shaft assembly (2). The monitoring component (1) is used to monitor the relative displacement information of itself and the diaphragm (27) on the diaphragm coupling at the same position during one rotation.

2. The testing device for coaxiality adjustment of connecting shafts according to claim 1, characterized in that: The monitoring component (1) includes a first distance monitoring element (11) and a second distance monitoring element (12). The first distance monitoring element (11) is used to monitor the relative displacement information of itself and the diaphragm (27) on the first diaphragm coupling (21) at one end of the intermediate shaft (22) of the transmission shaft assembly (2) during one rotation. The second distance monitoring element (12) is used to monitor the relative displacement information of itself and the diaphragm (27) on the second diaphragm coupling (23) at the other end of the intermediate shaft (22) of the transmission shaft assembly (2) during one rotation.

3. The testing device for coaxiality adjustment of connecting shafts according to claim 2, characterized in that: The first distance monitoring device (11) and the second distance monitoring device (12) are both mounted on the intermediate shaft (22) and can rotate synchronously with the intermediate shaft (22). The first distance monitoring device (11) is used to monitor the distance change information between itself and the first bolt (24) on the first diaphragm coupling (21). The second distance monitoring device (12) is used to monitor the distance change information between itself and the first bolt (24) on the second diaphragm coupling (23).

4. The testing device for coaxiality adjustment of connecting shafts according to claim 3, characterized in that: Both the first distance monitoring device (11) and the second distance monitoring device (12) are configured as pin-type displacement sensors.

5. The testing device for coaxiality adjustment of connecting shafts according to claim 1, characterized in that: The monitoring component (1) is detachably fixed to the drive shaft assembly (2).

6. The testing device for coaxiality adjustment of connecting shafts according to claim 1, characterized in that: It also includes a processing module, which is communicatively connected to the monitoring component (1) and is able to receive and process the monitoring information of the monitoring component (1).

7. A test method for coaxiality adjustment of connecting shafts, characterized in that: The testing apparatus for coaxiality adjustment of connecting shafts as described in any one of claims 1-6 includes the following steps: Obtain deformation displacement information: Rotate the drive shaft assembly (2) one revolution, and the monitoring assembly (1) monitors the deformation displacement information of the diaphragm (27) during the rotation process; Calculate the deviation angle: Obtain the maximum and minimum displacement from the deformation displacement information and calculate the deviation angle.

8. The test method for coaxiality adjustment of connecting shafts according to claim 7, characterized in that: In the step of calculating the deviation angle, the deviation angle The calculation formula is as follows: ； In the formula, D is The rotation diameter of the measuring point of the monitoring component (1) To monitor the maximum displacement obtained during one rotation of component (1), The minimum displacement obtained during one rotation of the monitoring component (1).

9. The test method for coaxiality adjustment of connecting shafts according to claim 7, characterized in that: It also includes the step of obtaining the deviation direction: determining the deviation direction based on the rotational position with the maximum displacement and the rotational position with the minimum displacement.

10. The test method for coaxiality adjustment of a connecting shaft according to claim 9, characterized in that: In the process of obtaining the deviation direction, the direction of the line connecting the rotational position with the maximum displacement and the rotational position with the minimum displacement is the deviation direction.

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