Performance testing device for dynamic pressure plane bearing

Abstract

The utility model discloses a performance testing device used for a dynamic pressure plane bearing, comprising a testing mechanism and a pressure adjusting mechanism, the testing mechanism is provided with a clamping gap, the clamping gap is used for clamping and fixing the dynamic pressure plane bearing to be tested, the testing mechanism is provided with a pressing rod, and the pressing rod is used for adjusting the width of the clamping gap. The end face pressure of the to-be-measured dynamic pressure plane bearing is adjusted; the pressure regulating mechanism comprises a dowel bar, a conversion assembly and a plurality of counter weights with different weights, the dowel bar is arranged on the testing mechanism in a sliding mode in the axial direction and is coaxial with the pressing rod, the counter weights are connected with the dowel bar through the conversion assembly, and the conversion assembly is used for converting the gravity of the counter weights into axial force of the dowel bar so that the dowel bar can slide in the axial direction and make contact with and extrude the pressing rod; the end face pressure of the to-be-tested dynamic pressure plane bearing is adjusted to be equal to the gravity of the counterweight. The problem that the adjusted load capacity cannot be quickly and accurately determined when the axial load of the dynamic pressure plane bearing is adjusted 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 performance testing device for a dynamic pressure plane bearing. 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, but the adjusted load cannot be determined quickly and accurately during the adjustment. Utility Model Content

[0004] The utility model aims to provide a performance testing device for a dynamic pressure plane bearing, so as to solve the problem that when the axial load of the dynamic pressure plane bearing is adjusted, the adjusted load amount cannot be determined quickly and accurately.

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

[0006] A performance testing device for a dynamic pressure plane bearing comprises a testing mechanism, wherein the testing mechanism is provided with a clamping gap, wherein the clamping gap is used to clamp and fix the dynamic pressure plane bearing to be tested, and the testing mechanism is provided with a pressure rod, wherein the pressure rod is used to adjust the width of the clamping gap to adjust the end surface pressure of the dynamic pressure plane bearing to be tested; and a pressure regulating mechanism, wherein the pressure regulating mechanism comprises a force transmission rod, a conversion assembly and a plurality of counterweights of different weights, wherein the force transmission rod is axially slidably arranged on the testing mechanism and is coaxially arranged with the pressure rod, wherein the counterweight is connected to the force transmission rod via the conversion assembly, and wherein the conversion assembly is used to convert the gravity of the counterweight into the axial force of the force transmission rod, so that the force transmission rod slides axially, contacts and squeezes the pressure rod, so as to adjust the end surface pressure of the dynamic pressure plane bearing to be tested to be equal to the gravity of the counterweight.

[0007] Optionally, the conversion assembly includes multiple pulleys and cables; at least one of the pulleys is arranged at the end of the force transmission rod away from the pressure rod; one end of the cable is connected to the testing mechanism, and the other end is sequentially wound around all the pulleys and is detachably connected to the counterweight.

[0008] Optionally, the pulley located at the end of the force transmission rod is symmetrically arranged with the force transmission rod as the axis; the cable is divided into a plurality of force-bearing sections by all the pulleys, and the two force-bearing sections closest to the force transmission rod are symmetrically arranged with the force transmission rod as the axis.

[0009] Optionally, the testing mechanism includes a frame, the frame is provided with a force transmission seat, the force transmission rod is axially slidable and penetrates the force transmission seat; a pulley is provided on the force transmission seat and is located in the same plane as the pulley located at the end of the force transmission rod; one end of the cable is connected to the force transmission seat, and the other end is sequentially wound around the pulley located at the end of the force transmission rod and the pulley located at the force transmission seat to form two force-bearing sections symmetrically arranged with the force transmission rod as the axis.

[0010] Optionally, the two force-bearing sections that are symmetrically arranged with the force transmission rod as an axis are both arranged parallel to the axis of the force transmission rod.

[0011] Optionally, the frame is provided with a T-shaped bracket, and the setting height of the crossbeam of the bracket is higher than the setting height of the pressure rod; the number of the pulleys is four, two of the pulleys are symmetrically arranged at both ends of the crossbeam of the bracket, and the four pulleys are located in the same plane.

[0012] Optionally, any one of the pulleys on the bracket is located directly above the pulley on the force transmission seat.

[0013] Optionally, the testing mechanism further comprises a mounting plate, a friction plate, a test motor and a friction force sensor; the mounting plate is coaxially arranged at the end of the pressure rod; the friction plate is coaxially arranged at the end of the output shaft of the test motor; the friction plate and the mounting plate are coaxially spaced apart to form the clamping gap between the friction plate and the mounting plate, the mounting plate is used for coaxially fixing and mounting the dynamic pressure plane bearing to be tested, and the friction plate is used for squeezing and rubbing the end face of the dynamic pressure plane bearing to be tested; the friction force sensor is used for detecting the friction torque of the mounting plate.

[0014] Optionally, the friction force sensor is arranged on the frame, and the detection end of the friction force sensor is connected to the side of the mounting plate through a force measuring rope; when the mounting plate is in an initial state, the force measuring rope is straightened.

[0015] Optionally, when the mounting plate is in an initial state, the force measuring rope is tangent to a side wall of the mounting plate.

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

[0017] The performance testing device for a dynamic pressure plane bearing provided by the utility model realizes the friction characteristic test of the dynamic pressure plane bearing by setting a testing mechanism, and changes the width of the clamping gap by setting a pressure rod, thereby changing the axial load (clamping force) of the dynamic pressure plane bearing clamped in the clamping gap; on this basis, by setting a pressure regulating mechanism, which includes a force transmission rod, a conversion assembly and a plurality of counterweights with different weights, the conversion assembly is used to convert the gravity of the counterweight into the axial thrust of the force transmission rod, and then the force transmission rod is used to push the pressure rod axially, thereby converting the gravity of the counterweight into the axial load of the dynamic pressure plane bearing. When the axial load of the dynamic pressure plane bearing needs to be adjusted, it only needs to replace the counterweight of the corresponding weight to make the adjustment quickly and accurately; through the mutual cooperation of the above-mentioned features, the performance testing device for the dynamic pressure plane bearing can effectively solve the problem that when the axial load of the dynamic pressure plane bearing is adjusted, it is impossible to quickly and accurately determine the adjusted load amount. 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 performance testing device for a hydrodynamic plane bearing provided by an embodiment of the utility model;

[0020] Figure 2 A partially enlarged schematic diagram of the clamping gap of a performance testing device for a hydrodynamic plane bearing provided in an embodiment of the utility model.

[0021] Marks and corresponding parts names in the attached drawings:

[0022] 10-clamping gap; 11-pressure rod; 12-frame; 121-force transmission seat; 122-bracket; 13-mounting plate; 14-friction plate; 15-test motor; 16-friction force sensor; 17-force measuring rope; 20-force transmission rod; 21-counterweight; 22-pulley; 23-cable. DETAILED DESCRIPTION

[0023] 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.

[0024] Example

[0025] Please refer to Figure 1 and Figure 2, this embodiment provides a performance testing device for a dynamic pressure plane bearing, including a testing mechanism, the testing mechanism is provided with a clamping gap 10, the clamping gap 10 is used to clamp and fix the dynamic pressure plane bearing to be tested, the testing mechanism is provided with a pressure rod 11, the pressure rod 11 is used to adjust the width of the clamping gap 10 to adjust the end surface pressure of the dynamic pressure plane bearing to be tested; the second includes a pressure regulating mechanism, the pressure regulating mechanism includes a force transmission rod 20, a conversion assembly and a plurality of counterweights 21 with different weights, the force transmission rod 20 is axially slidably arranged on the testing mechanism and is coaxially arranged with the pressure rod 11, the counterweight 21 is connected to the force transmission rod 20 through the conversion assembly, and the conversion assembly is used to convert the gravity of the counterweight 21 into the axial force of the force transmission rod 20, so that the force transmission rod 20 slides axially, contacts and squeezes the pressure rod 11, so as to adjust the end surface pressure of the dynamic pressure plane bearing to be tested to be equal to the gravity of the counterweight 21.

[0026] The performance testing device for the dynamic pressure plane bearing provided in this embodiment realizes the friction characteristic test of the dynamic pressure plane bearing by setting up a testing mechanism, and changes the width of the clamping gap 10 by setting a pressure rod 11, thereby changing the axial load (clamping force) of the dynamic pressure plane bearing clamped in the clamping gap 10; on this basis, by setting up a pressure regulating mechanism, it is provided that it includes a force transmission rod 20, a conversion assembly and a plurality of counterweights 21 of different weights, and the conversion assembly is used to convert the gravity of the counterweight 21 into the axial thrust of the force transmission rod 20, and then the force transmission rod 20 is used to push the pressure rod 11 axially, thereby converting the gravity of the counterweight 21 into the axial load of the dynamic pressure plane bearing. When the axial load of the dynamic pressure plane bearing needs to be adjusted, it only needs to replace the counterweight 21 of the corresponding weight to quickly and accurately adjust it; through the mutual cooperation of the above-mentioned features, the performance testing device for the dynamic pressure plane bearing can effectively solve the problem that when the axial load of the dynamic pressure plane bearing is adjusted, it is impossible to quickly and accurately determine the adjusted load amount.

[0027] It should be noted that the above-mentioned testing mechanism can adopt any testing mechanism in the prior art for testing the friction characteristics of dynamic pressure plane bearings, as long as it is provided with a clamping gap 10 and a pressure rod 11, and the width of the clamping gap 10 can be changed by the pressure rod 11.

[0028] In order to further explain the specific structure of the conversion assembly, the conversion assembly includes a plurality of pulleys 22 and cables 23; at least one of the pulleys 22 is arranged at an end of the force transmission rod 20 away from the pressure rod 11; one end of the cable 23 is connected to the testing mechanism, and the other end is sequentially wound around all the pulleys 22 and is detachably connected to the counterweight 21.

[0029] In order to preliminarily prevent the force transmission rod 20 from being skewed due to force, the pulley 22 located at the end of the force transmission rod 20 is symmetrically arranged with the force transmission rod 20 as the axis; the cable 23 is divided into multiple force-bearing sections by all the pulleys 22, and the two force-bearing sections closest to the force transmission rod 20 are symmetrically arranged with the force transmission rod 20 as the axis.

[0030] Through the above-mentioned arrangement, by optimizing the relative position of the pulley 22 and the force transmission rod 20, the pressure of the cable 23 on the force transmission rod 20 is transmitted as far as possible along the axial direction of the force transmission rod 20, thereby avoiding the force transmission rod 20 from being subjected to radial force to prevent it from being skewed; and the cable 23 is wound around the pulley 22, which can avoid unnecessary swinging of the pulley 22 to a certain extent, thereby avoiding unnecessary rotation of the force transmission rod 20, thereby avoiding the end of the force transmission rod 20 from applying a steering force to the pressure rod 11, thereby affecting the measurement accuracy of the friction force.

[0031] In order to further ensure that the force transmission rod 20 will not be skewed when subjected to force, the testing mechanism includes a frame 12, the frame 12 is provided with a force transmission seat 121, and the force transmission rod 20 is axially slidable and penetrates the force transmission seat 121; a pulley 22 is provided on the force transmission seat 121, and is located in the same plane as the pulley 22 located at the end of the force transmission rod 20; one end of the cable 23 is connected to the force transmission seat 121, and the other end is sequentially wound around the pulley 22 located at the end of the force transmission rod 20 and the pulley 22 located at the force transmission seat 121, so as to form two force-bearing sections symmetrically arranged with the force transmission rod 20 as the axis.

[0032] Preferably, the two force-bearing sections symmetrically arranged with the force transmission rod 20 as an axis are both arranged parallel to the axis of the force transmission rod 20 .

[0033] In order to improve the rationality of the structure and prevent the voltage regulating mechanism from interfering with the testing mechanism, the frame 12 is provided with a T-shaped bracket 122, and the setting height of the crossbeam of the bracket 122 is higher than the setting height of the pressure rod 11; the number of the pulleys 22 is four, and the two pulleys 22 are symmetrically arranged at both ends of the crossbeam of the bracket 122, and the four pulleys 22 are located in the same plane.

[0034] In order to make each force-bearing section horizontal or vertical so as not to generate force components in other directions, any one of the pulleys 22 located on the bracket 122 is located directly above the pulley 22 on the force transmission seat 121 .

[0035] In order to further explain the specific structure of the test mechanism, the test mechanism also includes a mounting plate 13, a friction plate 14, a test motor 15 and a friction force sensor 16; the mounting plate 13 is coaxially arranged at the end of the pressure rod 11; the friction plate 14 is coaxially arranged at the end of the output shaft of the test motor 15; the friction plate 14 and the mounting plate 13 are coaxially spaced to form the clamping gap 10 between the friction plate 14 and the mounting plate 13, the mounting plate 13 is used for coaxially fixing the dynamic pressure plane bearing to be tested, and the friction plate 14 is used for squeezing and rubbing the end face of the dynamic pressure plane bearing to be tested; the friction force sensor 16 is used to detect the friction torque of the mounting plate 13.

[0036] Optionally, the friction sensor 16 is disposed on the frame 12, and the detection end of the friction sensor 16 is connected to the side of the mounting plate 13 through a force measuring rope 17; when the mounting plate 13 is in an initial state, the force measuring rope 17 is straightened.

[0037] Preferably, when the mounting plate 13 is in an initial state, the force measuring rope 17 is tangent to a side wall of the mounting plate 13 .

[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 performance testing device for a dynamic pressure plane bearing, characterized in that: include: A testing mechanism, wherein the testing mechanism is provided with a clamping gap (10), the clamping gap (10) is used to clamp and fix the dynamic pressure plane bearing to be tested, and the testing mechanism is provided with a pressure rod (11), the pressure rod (11) is used to adjust the width of the clamping gap (10) to adjust the end surface pressure of the dynamic pressure plane bearing to be tested; A pressure regulating mechanism, the pressure regulating mechanism comprising a force transmission rod (20), a conversion assembly and a plurality of counterweights (21) of different weights, the force transmission rod (20) being axially slidably arranged on the test mechanism and being coaxially arranged with the pressure rod (11), the counterweight (21) being connected to the force transmission rod (20) via the conversion assembly, the conversion assembly being used to convert the gravity of the counterweight (21) into the axial force of the force transmission rod (20), so that the force transmission rod (20) slides axially, contacts and presses the pressure rod (11), so as to adjust the end surface pressure of the dynamic pressure plane bearing to be tested to be equal to the gravity of the counterweight (21).

2. The performance testing device for a dynamic pressure plane bearing according to claim 1, characterized in that: The conversion assembly includes a plurality of pulleys (22) and cables (23); At least one pulley (22) is arranged at one end of the force transmission rod (20) away from the pressure rod (11); One end of the cable (23) is connected to the testing mechanism, and the other end is sequentially wound around all the pulleys (22) and detachably connected to the counterweight (21).

3. The performance testing device for a dynamic pressure plane bearing according to claim 2, characterized in that: The pulley (22) located at the end of the force transmission rod (20) is symmetrically arranged with the force transmission rod (20) as an axis; The cable (23) is divided into a plurality of force-bearing sections by all the pulleys (22), and the two force-bearing sections closest to the force-transmitting rod (20) are symmetrically arranged with the force-transmitting rod (20) as the axis.

4. The performance testing device for a dynamic pressure plane bearing according to claim 3, characterized in that: The testing mechanism comprises a frame (12), the frame (12) is provided with a force transmission seat (121), and the force transmission rod (20) is axially slidably penetrated through the force transmission seat (121); One of the pulleys (22) is disposed on the force transmission seat (121) and is located in the same plane as the pulley (22) located at the end of the force transmission rod (20); One end of the cable (23) is connected to the force transmission seat (121), and the other end is sequentially wound around the pulley (22) located at the end of the force transmission rod (20) and the pulley (22) located at the force transmission seat (121) to form two force-bearing sections symmetrically arranged around the force transmission rod (20).

5. The performance testing device for a dynamic pressure plane bearing according to claim 4, characterized in that: The two force-bearing sections, which are symmetrically arranged with the force transmission rod (20) as an axis, are both arranged parallel to the axis of the force transmission rod (20).

6. The performance testing device for a hydrodynamic plane bearing according to claim 4, characterized in that: The frame (12) is provided with a T-shaped bracket (122), and the setting height of the crossbeam of the bracket (122) is higher than the setting height of the pressure rod (11); The number of the pulleys (22) is four, two of the pulleys (22) are symmetrically arranged at the two ends of the crossbeam of the bracket (122), and the four pulleys (22) are located in the same plane.

7. The performance testing device for a hydrodynamic plane bearing according to claim 6, characterized in that: Any one of the pulleys (22) located on the bracket (122) is located directly above the pulley (22) on the force transmission seat (121).

8. The performance testing device for a hydrodynamic plane bearing according to any one of claims 4 to 7, characterized in that: The testing mechanism also includes a mounting plate (13), a friction plate (14), a testing motor (15) and a friction force sensor (16); The mounting plate (13) is coaxially arranged at the end of the pressure rod (11); The friction disc (14) is coaxially arranged at the end of the output shaft of the test motor (15); The friction disk (14) and the mounting disk (13) are coaxially arranged with a spacing therebetween, so that the clamping gap (10) is formed between the friction disk (14) and the mounting disk (13); the mounting disk (13) is used for coaxially fixing and mounting the dynamic pressure plane bearing to be measured; and the friction disk (14) is used for pressing and rubbing the end surface of the dynamic pressure plane bearing to be measured; The friction sensor (16) is used to detect the friction torque of the mounting plate (13).

9. The performance testing device for a hydrodynamic plane bearing according to claim 8, characterized in that: The friction force sensor (16) is arranged on the frame (12), and the detection end of the friction force sensor (16) is connected to the side surface of the mounting plate (13) through a force measuring rope (17); When the mounting plate (13) is in the initial state, the force measuring rope (17) is straightened.

10. The performance testing device for a dynamic pressure plane bearing according to claim 9, characterized in that: When the mounting plate (13) is in an initial state, the force measuring rope (17) is tangent to the side wall of the mounting plate (13).

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