Dynamic pressure plane bearing performance test experiment table

Abstract

The utility model discloses a dynamic pressure plane bearing performance test experiment table, which comprises a rack, a test motor, a pressure regulating mechanism and a detection mechanism, the rack is slidably and rotatably provided with a pressing rod, one end of the pressing rod is coaxially provided with a mounting disc, and one end of the mounting disc far away from the pressing rod is used for coaxially and fixedly mounting a dynamic pressure plane bearing to be tested; the test motor is arranged on the rack, an output shaft of the test motor and the pressing rod are collinearly arranged, a friction disc is coaxially arranged at the end part of the output shaft of the test motor, and the friction disc is used for extruding and rubbing the end surface of the dynamic pressure plane bearing to be tested; the pressure adjusting mechanism is used for adjusting the distance between the mounting disc and the friction disc so as to adjust the axial direction borne by the dynamic pressure plane bearing to be tested; the detection mechanism is used for detecting the axial pressure of the pressing rod and detecting the friction torque of the mounting disc. The problems that the axial load of the dynamic pressure plane bearing is relatively tedious to adjust, and the friction coefficient measurement accuracy is easily reduced can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of dynamic pressure plane bearing detection, in particular to a dynamic pressure plane bearing performance test bench. Background Art

[0002] The hydrodynamic plane bearing is a common mechanical component used to support and reduce friction between mechanical parts. In order to ensure that the prepared hydrodynamic plane bearing can work smoothly, it needs to be subjected to a number of tests, among which the most important one is the friction characteristic test. The friction characteristic test refers to the use of specific test equipment to measure the friction coefficient of the hydrodynamic plane bearing under a certain axial load and speed. By analyzing the friction coefficient and its changes, it is determined whether the hydrodynamic plane bearing is in normal working condition.

[0003] During the test, the axial load of the hydrodynamic plane bearing needs to be adjusted according to the test requirements. This adjustment process is generally cumbersome and can easily apply rotational force to the hydrodynamic plane bearing, affecting the accuracy of its friction coefficient measurement. Utility Model Content

[0004] The utility model aims to provide a dynamic pressure plane bearing performance test bench to solve the problem that it is complicated to adjust the axial load of the dynamic pressure plane bearing and it is easy to cause the measurement accuracy of its friction coefficient to be reduced.

[0005] The utility model is realized by the following technical solutions:

[0006] A dynamic pressure plane bearing performance test bench comprises a test bench, wherein the test bench is provided with a pressure rod which is slidable and rotatable, and one end of the pressure rod is coaxially provided with a mounting plate, and the mounting plate is used for coaxially fixing and mounting a dynamic pressure plane bearing to be tested at an end away from the pressure rod; a test motor, wherein the test motor is arranged on the test bench, the output shaft of the test motor is colinearly arranged with the pressure rod, and the end of the output shaft of the test motor is coaxially provided with a friction plate, and the friction plate is used for squeezing and rubbing the end face of the dynamic pressure plane bearing to be tested; a pressure regulating mechanism, wherein the pressure regulating mechanism is used for adjusting the distance between the mounting plate and the friction plate, so as to adjust the axial force borne by the dynamic pressure plane bearing to be tested; and a detection mechanism, wherein the detection mechanism is used for detecting the axial pressure of the pressure rod and detecting the friction torque of the mounting plate.

[0007] Optionally, the pressure regulating mechanism includes a pressure regulating seat and a pressure regulating screw, the pressure regulating seat is arranged on the stand, the pressure regulating screw is threadedly connected to the pressure regulating seat and passes through the pressure regulating seat, and the pressure regulating screw is coaxially arranged with the pressure rod so that the pressure regulating screw can contact and squeeze the end of the pressure rod to make the mounting plate close to the friction plate.

[0008] Optionally, the pressure regulating mechanism also includes a force transmission rod and a linear bearing cylinder; the linear bearing cylinder is arranged on the stand, the force transmission rod is coaxially sleeved in the linear bearing cylinder, and the force transmission rod is provided with a rotation limiter so that the force transmission rod can only slide axially with the linear bearing cylinder; the force transmission rod is coaxially arranged between the pressure regulating screw and the pressure rod.

[0009] Optionally, an end surface of the force transmission rod close to one end of the pressure rod is set to be a spherical surface.

[0010] Optionally, the detection mechanism includes a pressure sensor and a friction sensor; the pressure sensor is used to detect the axial pressure between the pressure-adjusting screw and the force-transmitting rod; the friction sensor is used to detect the friction torque of the mounting plate.

[0011] Optionally, the pressure sensor is clamped between the force transmission rod and the pressure regulating screw and connected to the force transmission rod, and the pressure regulating screw squeezes the pressure sensor to move the force transmission rod axially.

[0012] Optionally, the stand is provided with a detection seat, the pressure rod is slidably and rotatably matched with the detection seat, and both ends of the pressure rod pass through the detection seat; the friction force sensor is arranged on the detection seat.

[0013] Optionally, a detection nail is provided on the side wall of the mounting plate, and the detection nail is connected to the detection end of the friction force sensor via a force measuring rope; when the mounting plate is in an initial state, the force measuring rope is straightened.

[0014] Optionally, the detection seat is slidably connected to an adjustment piece, and the sliding trajectory of the adjustment piece is parallel to the axial direction of the pressure rod; the friction sensor is arranged on the adjustment piece; when the mounting disk is in an initial state, the friction sensor and the mounting disk are located in the same plane and are tangent to the mounting disk, and the force measuring rope is tangent to the mounting disk.

[0015] Optionally, a plurality of positioning columns are provided in a ring shape at one end of the mounting plate away from the pressure rod, the positioning columns are vertically arranged to the mounting plate, and the positioning columns are used to fix and install the dynamic pressure plane bearing to be tested.

[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0017] The utility model provides a dynamic pressure plane bearing performance test bench, which provides basic structural support by setting a bench frame, sets a pressure rod so that it can slide and rotate on the bench frame, and sets a mounting plate, a test motor, and a friction plate. The mounting plate is used to fix the dynamic pressure plane bearing to be tested, the friction plate is used to squeeze and rub the end face of the dynamic pressure plane bearing to be tested, and the test motor is used to drive the friction plate to rotate to provide a test speed. On this basis, a pressure regulating mechanism is set, and the pressure regulating mechanism is used to adjust the distance between the mounting plate and the friction plate, so as to adjust the axial load caused by the friction plate to the dynamic pressure plane bearing to be tested. A detection mechanism is set, and the axial pressure of the pressure rod is detected to characterize the axial load borne by the dynamic pressure plane bearing to be tested, and the friction torque of the mounting plate is monitored to characterize the friction coefficient of the dynamic pressure plane bearing to be tested. Through the mutual cooperation of the above-mentioned features, the dynamic pressure plane bearing performance test bench can effectively solve the problem that it is cumbersome to adjust the axial load of the dynamic pressure plane bearing and it is easy to cause the measurement accuracy of its friction coefficient to be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0019] Figure 1 A schematic side view of a dynamic pressure plane bearing performance test bench provided by an embodiment of the utility model;

[0020] Figure 2 A schematic top view of a dynamic pressure plane bearing performance test bench provided by an embodiment of the utility model;

[0021] Figure 3 A partially enlarged schematic diagram of the mounting plate of a hydrodynamic plane bearing performance test bench provided in an embodiment of the utility model.

[0022] Marks and corresponding parts names in the attached drawings:

[0023] 10-bench; 11-pressure rod; 12-mounting plate; 121-detection nail; 122-positioning column; 13-detection seat; 131-adjustment piece; 20-test motor; 21-friction plate; 30-pressure regulating seat; 31-pressure regulating screw; 32-force transmission rod; 33-linear bearing cylinder; 40-pressure sensor; 41-friction sensor; 42-force measuring rope. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0025] Example

[0026] Please refer to Figures 1 to 3 The present embodiment provides a dynamic pressure plane bearing performance test bench, comprising a test bench 10, wherein the test bench 10 is provided with a pressure rod 11 which is slidable and rotatable, and a mounting plate 12 is coaxially provided at one end of the pressure rod 11, and an end of the mounting plate 12 which is away from the pressure rod 11 is used for coaxially fixing and mounting the dynamic pressure plane bearing to be tested; secondly, a test motor 20 is provided, wherein the test motor 20 is provided on the test bench 10, and the output shaft of the test motor 20 is colinearly arranged with the pressure rod 11, and a friction plate 21 is coaxially provided at the end of the output shaft of the test motor 20, and the friction plate 21 is used for squeezing and rubbing the end face of the dynamic pressure plane bearing to be tested; thirdly, a pressure regulating mechanism is provided, wherein the pressure regulating mechanism is used for adjusting the distance between the mounting plate 12 and the friction plate 21, so as to adjust the axial force borne by the dynamic pressure plane bearing to be tested; fourthly, a detection mechanism is provided, wherein the detection mechanism is used for detecting the axial pressure of the pressure rod 11, and detecting the friction torque of the mounting plate 12.

[0027] The dynamic pressure plane bearing performance test bench provided in the present embodiment provides a basic structural support by setting a bench 10, and sets a pressure rod 11 so that it can slide and rotate on the bench 10, and sets a mounting plate 12, a test motor 20, and a friction plate 21. The mounting plate 12 is used to fix the dynamic pressure plane bearing to be tested, and the friction plate 21 is used to squeeze and rub the end surface of the dynamic pressure plane bearing to be tested, and the test motor 20 drives the friction plate 21 to rotate to provide a test speed; on this basis, a pressure regulating mechanism is set, and the pressure regulating mechanism is used to adjust the distance between the mounting plate 12 and the friction plate 21, so as to adjust the axial load caused by the friction plate 21 to the dynamic pressure plane bearing to be tested; a detection mechanism is set, and the axial pressure of the pressure rod 11 is detected to characterize the axial load borne by the dynamic pressure plane bearing to be tested, and the friction torque of the mounting plate 12 is monitored to characterize the friction coefficient of the dynamic pressure plane bearing to be tested; through the mutual cooperation of the above-mentioned features, the dynamic pressure plane bearing performance test bench can effectively solve the problem that it is cumbersome to adjust the axial load of the dynamic pressure plane bearing and it is easy to reduce the accuracy of its friction coefficient measurement.

[0028] In order to further explain the specific structure of the pressure regulating mechanism, the pressure regulating mechanism includes a pressure regulating seat 30 and a pressure regulating screw 31. The pressure regulating seat 30 is arranged on the stand 10. The pressure regulating screw 31 is threadedly connected to the pressure regulating seat 30 and passes through the pressure regulating seat 30. The pressure regulating screw 31 is coaxially arranged with the pressure rod 11 so that the pressure regulating screw 31 can contact and squeeze the end of the pressure rod 11 to make the mounting plate 12 close to the friction plate 21.

[0029] Through the above arrangement, the pressure rod 11 can be pushed by rotating the pressure adjusting screw 31, thereby adjusting the axial load borne by the dynamic pressure plane bearing to be tested.

[0030] In order to avoid that the pressure-adjusting screw 31 causes rotational friction to the pressure rod 11 when rotating, causing unnecessary rotation of the pressure rod 11, thereby affecting the detection accuracy of the friction coefficient, the pressure-adjusting mechanism also includes a force transmission rod 32 and a linear bearing cylinder 33; the linear bearing cylinder 33 is arranged on the stand 10, and the force transmission rod 32 is coaxially sleeved in the linear bearing cylinder 33, and the force transmission rod 32 is provided with a rotation limiter so that the force transmission rod 32 can only slide with the linear bearing cylinder 33 along the axial direction; the force transmission rod 32 is coaxially arranged between the pressure-adjusting screw 31 and the pressure rod 11.

[0031] Preferably, the end surface of the force transmission rod 32 close to the pressure rod 11 is set to be a spherical surface.

[0032] In order to further explain the specific structure of the detection mechanism, the detection mechanism includes a pressure sensor 40 and a friction sensor 41; the pressure sensor 40 is used to detect the axial pressure between the pressure regulating screw 31 and the force transmission rod 32; the friction sensor 41 is used to detect the friction torque of the mounting plate 12.

[0033] Preferably, the pressure sensor 40 is sandwiched between the force transmission rod 32 and the pressure regulating screw 31 and connected to the force transmission rod 32 . The pressure regulating screw 31 squeezes the pressure sensor 40 to move the force transmission rod 32 axially.

[0034] Optionally, the stand 10 is provided with a detection seat 13 , the pressure rod 11 is slidably and rotatably matched with the detection seat 13 , and both ends of the pressure rod 11 pass through the detection seat 13 ; the friction force sensor 41 is arranged on the detection seat 13 .

[0035] Optionally, a detection pin 121 is provided on the side wall of the mounting plate 12 , and the detection pin 121 is connected to the detection end of the friction sensor 41 via a force measuring rope 42 ; when the mounting plate 12 is in an initial state, the force measuring rope 42 is straightened.

[0036] In order to perform adaptive adjustment according to the thickness and size of the dynamic pressure plane bearing to be tested, the detection seat 13 is slidably connected with an adjustment piece 131, and the sliding trajectory of the adjustment piece 131 is parallel to the axial direction of the pressure rod 11; the friction force sensor 41 is arranged on the adjustment piece 131; when the mounting disk 12 is in the initial state, the friction force sensor 41 is located in the same plane as the mounting disk 12 and is tangent to the mounting disk 12, and the force measuring rope 42 is tangent to the mounting disk 12.

[0037] In order to explain how the mounting plate 12 fixes and installs the structure of the dynamic pressure plane bearing to be tested, the mounting plate 12 is provided with a plurality of positioning columns 122 in a ring shape at one end away from the pressure rod 11. The positioning columns 122 are arranged vertically to the mounting plate 12, and the positioning columns 122 are used to fix and install the dynamic pressure plane bearing to be tested.

[0038] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A dynamic pressure plane bearing performance test bench, characterized in that: include: A stand (10), wherein the stand (10) is provided with a pressure rod (11) for sliding and rotating, and a mounting plate (12) is coaxially provided at one end of the pressure rod (11), and an end of the mounting plate (12) away from the pressure rod (11) is used for coaxially fixing and mounting a dynamic pressure plane bearing to be tested; A test motor (20), wherein the test motor (20) is arranged on the test stand (10), the output shaft of the test motor (20) is arranged colinearly with the pressure rod (11), the end of the output shaft of the test motor (20) is coaxially provided with a friction disk (21), and the friction disk (21) is used to squeeze and rub the end surface of the dynamic pressure plane bearing to be tested; A pressure regulating mechanism, the pressure regulating mechanism being used to adjust the distance between the mounting plate (12) and the friction plate (21) so as to adjust the axial force borne by the dynamic pressure plane bearing to be measured; A detection mechanism is used to detect the axial pressure of the pressure rod (11) and the friction torque of the mounting plate (12).

2. The dynamic pressure plane bearing performance test bench according to claim 1 is characterized in that: The pressure regulating mechanism comprises a pressure regulating seat (30) and a pressure regulating screw (31); the pressure regulating seat (30) is arranged on the stand (10); the pressure regulating screw (31) is threadedly connected to the pressure regulating seat (30) and passes through the pressure regulating seat (30); the pressure regulating screw (31) is coaxially arranged with the pressure rod (11) so that the pressure regulating screw (31) can contact and squeeze the end of the pressure rod (11) so that the mounting plate (12) is close to the friction plate (21).

3. The dynamic pressure plane bearing performance test bench according to claim 2 is characterized in that: The pressure regulating mechanism also includes a force transmission rod (32) and a linear bearing cylinder (33); The linear bearing cylinder (33) is arranged on the stand (10), the force transmission rod (32) is coaxially sleeved in the linear bearing cylinder (33), and the force transmission rod (32) is provided with a rotation limiter so that the force transmission rod (32) can only slide and cooperate with the linear bearing cylinder (33) along the axial direction; The force transmission rod (32) is coaxially arranged between the pressure regulating screw (31) and the pressure rod (11).

4. The dynamic pressure plane bearing performance test bench according to claim 3 is characterized in that: The end surface of the force transmission rod (32) close to one end of the pressure rod (11) is configured as a spherical surface.

5. The dynamic pressure plane bearing performance test bench according to claim 3 is characterized in that: The detection mechanism comprises a pressure sensor (40) and a friction sensor (41); The pressure sensor (40) is used to detect the axial pressure between the pressure regulating screw (31) and the force transmission rod (32); The friction sensor (41) is used to detect the friction torque of the mounting plate (12).

6. The dynamic pressure plane bearing performance test bench according to claim 5 is characterized in that: The pressure sensor (40) is sandwiched between the force transmission rod (32) and the pressure regulating screw (31), and is connected to the force transmission rod (32). The pressure regulating screw (31) causes the force transmission rod (32) to move axially by squeezing the pressure sensor (40).

7. The dynamic pressure plane bearing performance test bench according to claim 5, characterized in that: The stand (10) is provided with a detection seat (13), the pressure rod (11) is slidably and rotationally matched with the detection seat (13), and both ends of the pressure rod (11) pass through the detection seat (13); The friction force sensor (41) is arranged on the detection seat (13).

8. The dynamic pressure plane bearing performance test bench according to claim 7 is characterized in that: A detection pin (121) is provided on the side wall of the installation plate (12), and the detection pin (121) is connected to the detection end of the friction force sensor (41) via a force measuring rope (42); When the mounting plate (12) is in the initial state, the force measuring rope (42) is straightened.

9. The dynamic pressure plane bearing performance test bench according to claim 8, characterized in that: The detection seat (13) is slidably connected to an adjustment member (131), and a sliding track of the adjustment member (131) is parallel to the axial direction of the pressure rod (11); The friction force sensor (41) is arranged on the adjusting member (131); When the mounting plate (12) is in an initial state, the friction force sensor (41) and the mounting plate (12) are located in the same plane and are tangent to the mounting plate (12), and the force measuring rope (42) is tangent to the mounting plate (12).

10. The dynamic pressure plane bearing performance test bench according to claim 1, characterized in that: A plurality of positioning columns (122) are provided in a ring shape at one end of the mounting plate (12) away from the pressure rod (11). The positioning columns (122) are arranged vertically to the mounting plate (12) and are used to fix and install the dynamic pressure plane bearing to be tested.

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