Torque measuring device of locking disc

Abstract

The utility model discloses a torque measuring device of a locking disc, and belongs to the technical field of locking discs. A hollow shaft (11) and a solid shaft (4) penetrating through the hollow shaft (11) are arranged on the surface of the support (1), a locking disc (12) to be detected fixes the hollow shaft (11) and the solid shaft (4), a lever (2) is arranged at the other end of the solid shaft (4), and a pressure sensor (7) is arranged at the end of the lever (2). The first positioning groove and the second positioning groove are oppositely arranged, and positioning keys (10) are placed in the first positioning groove and the second positioning groove. In the torque measuring device of the locking disc, the binding surfaces of the hollow shaft and the support are connected through the positioning key, so that the hollow shaft and the support are prevented from loosening after a long-term and large-torque test, and the reliability of the torque measuring device of the locking disc is improved while the test precision is ensured.

Description

Technical Field

[0001] The invention discloses a torque measuring device for a locking disk, belonging to the technical field of locking disks. Background Art

[0002] The locking disc is a keyless connection device that uses friction to lock the shaft hub. When in use, the pressure and friction generated between the containing surfaces are generated by tightening the high-strength bolts to achieve the connection between the wheel and the shaft, and further realize the transmission of the load. Therefore, the maximum torque that the locking disc can transmit is an extremely important parameter.

[0003] In the prior art, the calculation of the maximum torque transmitted by the locking disk is the main basis for designing the locking disk. There are two traditional methods for calculating the maximum torque: (1) The torque transmitted by the locking disk is calculated by using the axial force transmitted by the bolt. However, this method does not take into account the actual elastic deformation of the outer ring. Therefore, this method does not obtain the true deformation of each component. The accuracy of the result is low, and the reliability of the locking disk designed according to this calculation method is not high. (2) The transmission torque is calculated by calculating the interference and subtracting the clearance of each part. This method also does not take into account the actual deformation of the outer ring and ignores the actual deformation of the outer ring. Therefore, the torque calculated by this method is different from the actual one.

[0004] In the prior art, there are also some devices that directly test the torque of the locking disk, such as the technical solution disclosed in the Chinese utility model patent with application number 202320507254.7, application date March 16, 2023, and patent name "A Wind Power Locking Disk Torque Testing Device". In this technical solution: a sleeve is fixed on the surface of the bracket, one end of the drive shaft passes through the sleeve and is fixed by the locking disk to be tested, and a pressure plate is installed on the other end of the drive shaft, and then the driving pressure plate is used to apply force to the drive shaft. When the drive shaft and the sleeve rotate relative to each other (that is, the locking disk fails), the maximum torque of the locking disk is measured.

[0005] However, in actual implementation, the following defects were found: when the transmission shaft and the sleeve have a tendency to rotate relative to each other, since the sleeve and the bracket are relatively fixed, the external force acts on the bracket through the transmission shaft-sleeve. The sleeve and the bracket are fixed by multiple bolts around the circumference, but due to the large external force, after a long period of testing, there will still be looseness between the sleeve and the bracket, which will not only affect the test accuracy, but also easily cause damage to the equipment. Utility Model Content

[0006] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and to provide a torque measuring device for a locking disk in which the fitting surfaces of a hollow shaft and a support are connected by a positioning key to avoid loosening between the hollow shaft and the support after long-term, high-torque testing, thereby ensuring the test accuracy and improving the reliability of the torque measuring device of the locking disk.

[0007] The technical solution adopted by the utility model to solve its technical problems is: the torque measuring device of the locking disk includes a support, a through hole is arranged on the surface of the support, a hollow shaft is fitted with the support and coaxially fixed at the through hole on the surface of the support, a solid shaft is arranged to penetrate the hollow shaft, the locking disk to be detected fixes the hollow shaft and the solid shaft, a lever is arranged at the other end of the solid shaft, and a pressure sensor is arranged at the end of the lever, which is characterized in that: a first positioning groove and a second positioning groove are respectively opened at the fitting surface of the hollow shaft and the support, the first positioning groove and the second positioning groove are arranged opposite to each other, and positioning keys are placed in the first positioning groove and the second positioning groove.

[0008] Preferably, one end of the hollow shaft protrudes in its radial direction to form a circular fixing disk, and after the shaft barrel of the hollow shaft passes through the through hole on the surface of the support, the fixing disk is clamped and fits on the surface of the support.

[0009] Preferably, the support includes two parts perpendicular to each other, wherein the horizontal part is attached to the surface of the base and fixed by a plurality of fixing bolts, and the hollow shaft is installed on the surface of the vertical part of the support.

[0010] Preferably, a flange is sleeved on the outside of the solid shaft, and the lever is sleeved on the outside of the flange.

[0011] Preferably, the hollow shaft and the flange are coaxially fixed via a key.

[0012] Preferably, the pressure sensors are arranged at the upper and lower ends of the lever end.

[0013] Preferably, a top block is provided on the surface of the pressure sensor.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the torque measuring device of the locking disk, the fitting surfaces of the hollow shaft and the support are connected by positioning keys to avoid loosening between the hollow shaft and the support after long-term, high-torque testing, thereby ensuring the test accuracy and improving the reliability of the torque measuring device of the locking disk.

[0016] In the torque measuring device of the locking disk, the hollow shaft passes through the support for fixing. Compared with the method in the prior art in which the hollow shaft is directly fixed on the surface of the support, the thickness of the device is reduced to a certain extent.

[0017] In the torque measuring device of the locking disk, pressure sensors are arranged at both the upper and lower ends of the lever, thereby improving the selectivity of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Front view of the torque measuring device for the locking disk.

[0019] Figure 2 A partial cross-sectional view from above of the torque measuring device of the locking disk.

[0020] Among them: 1, support 2, lever 3, key 4, solid shaft 5, flange 6, top block 7, pressure sensor 8, base 9, fixing bolt 10, positioning key 11, hollow shaft 12, locking disk. DETAILED DESCRIPTION

[0021] Figure 1~2 It is the best embodiment of the utility model, and the following Figure 1~2 The utility model is further described.

[0022] like Figure 1~2 As shown, a torque measuring device for a locking disk includes a horizontally placed base 8, on the surface of which a support 1 is fixed. The support 1 includes two parts perpendicular to each other, wherein the horizontal part is attached to the surface of the base 8 and fixed by a plurality of fixing bolts 9, and the vertical part of the support 1 is vertically located on the surface of the horizontal part.

[0023] A through hole is provided on the surface of the vertical part of the support 1, and a hollow shaft 11 is placed in the through hole, and one end of the hollow shaft 11 protrudes radially to form a circular fixing disk. After the shaft barrel of the hollow shaft 11 passes through the support 1, the fixing disk at its end is clamped on the surface of the vertical part of the support 1 and fits, and the hollow shaft 11 is fixed to the support 1 by multiple bolts that simultaneously penetrate the support 1 axially around the fixing disk.

[0024] A first positioning groove is also provided on the surface of the fixed disk outside the hollow shaft 11, and a second positioning groove is opened on the surface of the support 1 facing the fixed disk. When the hollow shaft 11 passes through the support 1 and is positioned, the first positioning groove and the second positioning groove are arranged relatively. A positioning key 10 is provided between the fixed disk of the hollow shaft 11 and the support 1. When the hollow shaft 11 passes through the support 1, the front and rear ends of the positioning key 10 enter the first positioning groove and the second positioning groove respectively, and then are fixed by multiple bolts passing through the circumference. Therefore, the positioning key 10 improves the tightness between the hollow shaft 11 and the support 1, avoids loosening between the hollow shaft 11 and the support 1 after long-term and high-torque testing, ensures the test accuracy, and improves the reliability of the torque measuring device of the locking disk.

[0025] A solid shaft 4 is also provided in the inner cavity of the hollow shaft 11. The solid shaft 4 is inserted into the hollow shaft 11 from one end of the fixing disk. One end of the solid shaft 4 passes through the hollow shaft 11 and extends to the end of the hollow shaft 11. A locking disk 12 to be detected is sleeved on the outside of the hollow shaft 11, and the hollow shaft 11 and the solid shaft 4 inside it are fixed by the locking disk 12.

[0026] A flange 5 is sleeved on the outside of one end of the solid shaft 4 outside the hollow shaft 11. The end of the hollow shaft 11 and the flange 5 are coaxially fixed by a key 3. A lever 2 is also arranged outside the flange 5. One end of the lever 2 is sleeved on the outside of the flange 5 and fixed by a plurality of bolts around the circumference. The other end of the lever 2 extends to the outside of the support 1 along the radial direction of the flange 5.

[0027] Pressure sensors 7 are fixed to the upper and lower parts of the end of the lever 2 away from the flange 5, respectively. A top block 6 is provided on the surface of the upper and lower pressure sensors 7, respectively. The top block 6 can make the force on the pressure sensor 7 more uniform.

[0028] The specific working process and working principle are as follows:

[0029] First, fix the lever 2, flange 5 and solid shaft 4, and then pass one end of the solid shaft 4 through the hollow shaft 11. When the solid shaft 4 extends to the end of the hollow shaft 11, fix the locking disk 12 to be tested on the outside of the hollow shaft 11, and lock the hollow shaft 11 and the solid shaft 4.

[0030] The lever 2 is driven to rotate by an external driving mechanism. Take a jack as an example: the jack is placed on the surface of the base 8, and the top rod of the jack is pressed against the top block 6 at the lower end of the end of the lever 2. The jack is driven to make its top rod output, and the top rod of the jack continuously pushes the lever 2 to make it rotate.

[0031] The output end of the pressure sensor 7 is led out through a wire and connected to an external controller, and the controller collects and records the pressure value borne by the pressure sensor 7 in real time. With the continuous output of the jack rod, when the solid shaft 4 and the hollow shaft 11 rotate relative to each other, it indicates that the locking plate 12 fails. At this time, the maximum value of the output end of the pressure sensor 7 collected by the controller is the critical value of the failure of the locking plate 12. By converting the pressure value and the torque, the maximum torque that the locking plate 12 can transmit is obtained.

[0032] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A torque measuring device for a locking disk, comprising a support (1), a through hole being provided on the surface of the support (1), a hollow shaft (11) being fitted with the support (1) and coaxially fixed at the through hole on the surface of the support (1), a solid shaft (4) penetrating the hollow shaft (11), a locking disk (12) to be detected fixing the hollow shaft (11) and the solid shaft (4), a lever (2) being provided at the other end of the solid shaft (4), and a pressure sensor (7) being provided at the end of the lever (2), characterized in that: A first positioning groove and a second positioning groove are respectively provided at the fitting surfaces of the hollow shaft (11) and the support (1), the first positioning groove and the second positioning groove are arranged opposite to each other, and positioning keys (10) are placed in the first positioning groove and the second positioning groove.

2. The torque measuring device of the locking disk according to claim 1, characterized in that: One end of the hollow shaft (11) protrudes in its radial direction to form a circular fixing disk. After the shaft barrel of the hollow shaft (11) passes through the through hole on the surface of the support (1), the fixing disk is clamped on the surface of the support (1) and fits in place.

3. The torque measuring device of the locking disk according to claim 1 or 2, characterized in that: The support (1) comprises two parts perpendicular to each other, wherein the horizontal part is attached to the surface of the base (8) and is fixed by a plurality of fixing bolts (9), and the hollow shaft (11) is installed on the surface of the vertical part of the support (1).

4. The torque measuring device of the locking disk according to claim 1, characterized in that: A flange (5) is sleeved on the outside of the solid shaft (4), and the lever (2) is sleeved on the outside of the flange (5).

5. The torque measuring device of the locking disk according to claim 4, characterized in that: The hollow shaft (11) and the flange (5) are coaxially fixed via a key (3).

6. The torque measuring device of the locking disk according to claim 1, characterized in that: The pressure sensors (7) are arranged at the upper and lower ends of the end of the lever (2).

7. The torque measuring device of the locking disk according to claim 1, characterized in that: A top block (6) is arranged on the surface of the pressure sensor (7).

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