CN115962939A - Device and method for observing and testing lubricating performance of intermediate bearing lubricating structure under rotation of inner ring and outer ring - Google Patents
Device and method for observing and testing lubricating performance of intermediate bearing lubricating structure under rotation of inner ring and outer ring Download PDFInfo
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- CN115962939A CN115962939A CN202310036881.1A CN202310036881A CN115962939A CN 115962939 A CN115962939 A CN 115962939A CN 202310036881 A CN202310036881 A CN 202310036881A CN 115962939 A CN115962939 A CN 115962939A
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Abstract
The invention belongs to the technical field of bearing tests, and provides a lubricating performance observation test device and method for a lubricating structure of an intermediate bearing under the rotation of an inner ring and an outer ring. The motor is adopted to drive the inner ring of the intermediate bearing to rotate, and the other motor drives the bevel gear to rotate, so that the outer ring of the tested bearing is driven to rotate, and the inner ring and the outer ring of the intermediate bearing synchronously rotate; the left side and the right side of the intermediate bearing adopt a distributed oil return structure for receiving oil and are matched with a flow sensor and an oil scrap sensor at the same time, and the oil return flow and the abrasion characteristics of the left side and the right side of the intermediate bearing are measured; establishing a relation between the flow field characteristic and the temperature characteristic of the intermediate bearing by monitoring the return oil flow at two sides of the intermediate bearing and combining the measurement of the temperature at two sides of the intermediate bearing; the lubricating oil receiving structure under the intermediate bearing ring is matched with the high-speed camera to collect image information, so that the flow characteristic of the lubricating oil under the ring and the flow distribution characteristics of the left side and the right side of the intermediate bearing caused by the lubricating oil under the ring can be observed, and support is provided for the guide design of the lubricating structure of the bearing.
Description
Technical Field
The invention relates to the technical field of bearing tests, in particular to a lubricating performance observation test device and method for a lubricating structure of an intermediate bearing under the rotation of an inner ring and an outer ring.
Background
The medium bearing is one of key parts influencing the mechanical rotation performance, most of domestic and foreign active dual-rotor engines adopt cylindrical roller bearings with inner and outer rings rotating synchronously, the lubricating property of the medium bearing is critical to the flow characteristic inside the bearing, the medium bearing directly influences the friction characteristic and the heat dissipation characteristic of an interface where lubricating oil reaches, the friction characteristic influences the abrasion degree among bearing parts, the heat dissipation characteristic is directly related to the temperature characteristic of the bearing, and the medium bearing lubricating structure is of great significance in the development of lubricating property test research.
Although there are some bearing testing machines for bearing lubricating oil at present, they are mostly inconvenient to observe the lubricating performance of the lubricating structure, such as the following patents: a rolling bearing lubrication condition experiment simulation device and a measurement method (CN 102353334A) mainly measure and analyze the motion state of a bearing without paying attention to the flow characteristic and the temperature characteristic of lubricating oil; the patent: although a rolling bearing lubrication simulation experiment device (CN 202189050U) can simulate the field working condition of a heavy-load rolling bearing and simultaneously place a plurality of sets of experimental bearings, a monitoring system of the rolling bearing lubrication simulation experiment device cannot well observe various characteristics of lubricating oil and only monitors the influence of various lubricating oil and lubricating grease on the performance of the bearing; the patent: a thickness testing device and a testing method (CN 103615994A) of a lubricating oil film of a rolling bearing adopt an ultrasonic film thickness measuring technology to obtain a real-time film thickness value of a testing point of a contact part of the rolling bearing under the action of a slip factor, measure an oil film formed by the lubricating oil and do not pay attention to the flow characteristic of the lubricating oil; the patent: a bearing visual test device and a method (CN 110307979A) are provided, the device can visually observe and monitor the running and lubricating conditions of a bearing under different working conditions in real time in the whole process by arranging a fully transparent outer end cover and an inner oil seal, however, the test device does not simulate the working state of synchronous rotation of an inner ring and an outer ring of an aviation intermediate bearing, and can not obtain the lubricating flow characteristic of a cylindrical roller bearing under the condition of bearing eccentric load.
In summary, at present, no test device can be used for researching the lubricating oil resilience of the intermediate bearing in the state of selectively mounting the inner ring and the outer ring and the heat dissipation and flow conditions on two sides, so that a lubricating performance observation test device and a method for the intermediate bearing lubricating structure under the rotation of the inner ring and the outer ring are needed to be researched, and support is provided for the optimal design of the lubricating oil and the bearing structure.
Disclosure of Invention
The invention aims to solve the defects in the prior art, provides a lubricating performance observation test device and a lubricating performance observation test method of an intermediary bearing lubricating structure under the rotation of an inner ring and an outer ring based on machine vision, and in addition, the lubricating performance observation test device of the cylindrical roller bearing lubricating structure is provided with an inner ring and an outer ring synchronous rotation oil supply system, an oil return monitoring system and a temperature measurement system, and the flow characteristic of lubricating oil in a tested bearing can be effectively observed by adopting a tracing factor mode.
The technical scheme of the invention is as follows: a lubricating performance observation test device of an intermediate bearing lubricating structure under the rotation of an inner ring and an outer ring comprises an inner ring driving system 1, an outer ring driving system 2, an intermediate bearing system 3, an oil injection system 4, an oil return system 5, a temperature measuring system 6, an intermediate bearing sleeve supporting system 7, an observation system 8, a box body 9 and a test bed base 10; the inner ring driving system 1, the box body 9 and the observation system 8 are sequentially arranged on a base 10 of the test bed.
The box body 9 comprises a box body left end cover 91, a shell 92 and a box body right glass end cover 93; the shell 92 is of an up-down split structure and is arranged on the test bed base 10, and two ends of the shell are respectively connected with the box left end cover 91 and the box right glass end cover 93; the medium bearing system 3, the oil return system 5, the temperature measuring system 6 and the medium bearing sleeve supporting system 7 are all arranged in the box body 9; a notch is formed in the top end of the shell 92 and used for fixing the outer ring driving system 2; a through hole is drilled in the upper part of the left end cover 9 of the box body and is used for connecting the oil injection system 4 and transporting lubricating oil; the right glass end cover 93 of the box body is used for observing the motion state of the contact surfaces of the detected bearing of the shell 92.
The inner ring driving system 1 mainly comprises a motor base 11, a servo motor a12, a coupler a13, a supporting bearing seat system 14 and a stepped spindle 15; one end of the stepped spindle 15 is connected with a servo motor a12 through a coupler a13, and the other end is connected with an inner ring of an intermediate bearing 32; the servomotor a12 transmits torque to the stepped spindle 15 via the coupling a13 to rotate the inner race of the intermediate bearing 32. A supporting bearing seat system 14 is arranged on the stepped spindle 15, and the supporting bearing seat system 14 is fixed on the test bed base 10 through a T-shaped workbench; the servo motor a12 is fixed on the test bed base 10 through the motor base 11; the servo motor a12 transmits torque to the stepped spindle 15 through a coupler a13 so as to drive the inner ring of the intermediate bearing 32 to rotate; the supporting bearing seat system 14 comprises a deep groove ball bearing a141, a bearing seat a142, a gland a143 and a sleeve 144; the bearing seat a142 is sleeved on the stepped spindle 15, and a gap exists between the bearing seat a and the stepped spindle 15; a gland a143 is fixed at two ends of the bearing seat a 142; two deep groove ball bearings 141 are arranged in a gap between the bearing seat a142 and the stepped main shaft 15 and used for positioning and supporting the stepped main shaft 15, limiting the axial movement of the stepped main shaft 15 and bearing the main load of the stepped main shaft 15, so that the stepped main shaft is prevented from large-deflection deformation; a sleeve 144 is arranged between the two deep groove ball bearings a141 on the stepped main shaft 15 and used for axially fixing the deep groove ball bearings a141. The bearing seat a142 is connected with the test bed base 10 through a bolt, and plays a role in fixing and supporting the two deep groove ball bearings a141 on the main shaft.
The outer ring driving system 2 mainly comprises a servo motor b21, a coupler b22, a motor bracket 23, a flange plate 24, a gear shaft 25, a driving bevel gear 26, a deep groove ball bearing b27, a bearing sleeve 28, a bearing seat b29 and a gland b 30; an output shaft of the servo motor 21 is sequentially connected with a coupler b22, a gear shaft 25 and a pair of driving bevel gears 26; the drive bevel gear 26 is engaged with a driven bevel gear 523 welded to an intermediate bearing sleeve 524, the intermediate bearing sleeve 524 is located outside the outer ring of the intermediate bearing 32 and is in transition fit therewith; the gear shaft 25 is sleeved with a bearing seat b29, and a gap is formed between the bearing seat b29 and the bearing seat; the bearing seat b29 and the gland b30 form a closed space; a bearing sleeve 28 and two deep groove ball bearings b27 are sleeved in the closed space from outside to inside in sequence; the end of the bearing seat b29 passes through the notch of the shell 92, and the side surface of the bearing seat b is fixed on the shell 92 through the flange 24; the servo motor 21 is fixed on the housing 92 through the motor bracket 23; the servo motor 21 transmits torque to the gear shaft 25 through the coupling 22, and the gear shaft 25 rotates the drive bevel gear 26, thereby rotating the intermediate bearing sleeve 524 and finally rotating the outer ring of the intermediate bearing 32.
The intermediate bearing system 3 mainly comprises an eccentric disc 31, an intermediate bearing 32 and a hydraulic cover 33; the inner side of the intermediate bearing 32 is fixedly connected with a hydraulic cover 33, and the hydraulic cover 33 compresses the inner ring of the intermediate bearing 32 to prevent the inner ring from falling off and moving; the eccentric disc 31 is installed outside the intermediate bearing 32, the eccentric disc 31 is clamped in a groove arranged on the intermediate bearing sleeve 524, and the eccentric load is transmitted to the intermediate bearing 32 along with the rotation of the intermediate bearing sleeve 524 so as to simulate the working environment of the intermediate bearing 32. The left side of the inner ring of the intermediate bearing 32 is positioned through the shaft shoulder of the stepped spindle 15, and is in interference fit with the inner ring in a base hole mode, so that the excessive stress deformation of the spindle-inner ring caused by instantaneous overload in the test process of the intermediate bearing 32 is avoided with high pre-tightening rigidity.
The oil injection system 4 mainly comprises a ring lower side spray pipe 41, a pipe cover 42, a ring lower oil receiving ring 43 and a locking nut 44; the annular lower side spray pipe 41 is welded on the left end cover 91 of the box body and is communicated with a through hole of the left end cover 91 of the box body; the annular lower side spray pipe 41 comprises an annular lower pipe and a side spray pipe, and one end of the two pipes is provided with a lubricating nozzle with a pipe cover 42; the lower oil collecting ring 43 is fixed on the outer side of the stepped spindle 15 through a locking nut 44, a lubricating nozzle of a lower pipeline of the ring is positioned above the lower oil collecting ring 43, and an oil groove of the lower oil collecting ring 43 is communicated with an oil inlet hole at the bottom of the intermediate bearing 32 through the stepped spindle 15; the lubrication nozzles of the side spray channels are located on the side of the rotor of the intermediary bearing 32. The lubricating nozzle of the side spray pipeline performs oil spray lubrication on the rotating body of the intermediate bearing 15; the lubricating nozzle of the ring lower pipeline is used for conveying the lubricating oil into the interior of the tested bearing by the way that the lubricating oil enters the oil inlet hole at the bottom of the intermediate bearing 32 through the oil groove at the bottom of the ring lower oil receiving ring 43.
The oil return system 5 mainly comprises a left oil return system 51, a right oil return system 52, an oil dust sensor 53 and a flow sensor 54; the left oil return system 51 is positioned at one side of the intermediate bearing 32, and a left oil leakage pipeline of the left oil return system is embedded in the bottom of the box body 9 and then extends out of a left end cover 91 of the box body, and is used for collecting lubricating oil rebounded and thrown out of one side of the intermediate bearing 32; a right oil return system 52 is positioned on the other side of the intermediate bearing 32 and used for collecting the lubricating oil sprayed out from the other side of the intermediate bearing 32; the right oil return system 52 comprises a temperature sensor pipeline 521, an oil slinger 522, a driven bevel gear 523, an intermediate bearing sleeve 524, a through hole type gas-electric slip ring 525, an oil return pipe 526 and a spiral U-shaped groove 527; the spiral U-shaped groove 527 is embedded in the intermediate bearing sleeve 524, one end of the spiral U-shaped groove 527 is used for bearing lubricating oil ejected from the other side of the intermediate bearing 32, the other end of the spiral U-shaped groove is sequentially connected with an oil return pipe 526 and a rotating end of a through hole type gas-electric slip ring 525, the through hole type gas-electric slip ring 525 is fixed on the outer side of the intermediate bearing sleeve 524, and a distance exists between the through hole type gas-electric slip ring 525 and the driven bevel gear 523, so that the normal operation of the driven bevel gear 523 is ensured; the static end of the through hole type gas-electric slip ring 525 is connected with a right oil leakage pipeline; the right oil leakage pipeline is embedded in the bottom of the box body 9 and then extends out of a right glass end cover 93 of the box body; a slinger 522 fixed inside the intermediate bearing sleeve 524, located on one side of the oil return pipe 526, for damming up the lubricating oil injected from the other side of the intermediate bearing 32 and collecting the lubricating oil into the oil return pipe 526 below; a flow sensor 54 and an oil scrap sensor 53 are sequentially arranged on the oil leakage pipeline and used for measuring the flow and the abrasion condition of the lubricating oil on two sides of the intermediate bearing 32; a temperature sensor conduit 521 is arranged in the cylinder wall of the intermediate bearing sleeve 524, which comprises a vertical through hole and a horizontal hole.
The temperature measuring system 6 comprises a left temperature sensor 61 and a right temperature sensor 62; one end of the left temperature sensor 61 is connected with one side of the outer ring of the intermediate bearing 32, and the other end of the left temperature sensor is connected to the rotating end of the through hole type gas-electric slip ring 525 through a horizontal hole of a temperature sensor pipeline 521; one end of the right temperature sensor 62 is connected with the other side of the outer ring of the intermediate bearing 32, and the other end of the right temperature sensor is connected to the rotating end of the through hole type gas-electric slip ring 525 through a vertical through hole of the temperature sensor pipeline 521; the left temperature sensor 61 and the right temperature sensor 62 respectively collect temperature comparison data of two sides of the outer ring of the intermediate bearing 32; the rotating end of the through hole type gas-electric slip ring 51 is connected with the inner data lines of the temperature sensors on the left side and the right side, and the static end of the through hole type gas-electric slip ring 525 is connected with the outer data lines to output temperature.
The tested bearing sleeve supporting system 7 comprises a deep groove ball supporting bearing 71, a supporting bearing seat 72 and a hydraulic cover 73; the deep groove ball support bearing 71 and the intermediate bearing sleeve 524 are in interference fit in a base hole mode; the supporting bearing seat 72 is sleeved outside the deep groove ball supporting bearing 71 and is fixedly connected with the box body 9; a hydraulic cover 73 is fixed between the supporting bearing seat 72 and the deep groove ball supporting bearing 71, and the intermediate bearing sleeve 524 is pressed inside the hydraulic cover 73, so that the outer ring of the intermediate bearing 32 is placed to fall off and move.
The observation system 8 comprises a coaxial light source 81, a CCD high-speed camera 82 and an observation base 83; the observation base 83 is connected with the test bed base 10 through a 'n' -shaped workbench; the coaxial light source 81 and the CCD high-speed camera 82 are sequentially fixed on an observation base 83; the coaxial light source 81 gathers the diffused light, and the CCD high-speed camera 82 realizes the image acquisition of the lubrication condition of the detected bearing in the working process.
The oil slinger 522 is located next to the oil return pipe 526 to maximize the collection of the oil ejected from the right side to the oil return pipe below. Only the front sensing part of the flow sensor 54 is located in the oil leakage pipe, and all the lubricating oil in the oil leakage pipe passes through the oil scrap sensor 53 and then flows out of the oil leakage pipe.
The test bed base 10 is provided with a plurality of tracks, and the inner ring driving system 1, the box body 9 and the observation system 8 are fixed after moving on the tracks.
One side of the inner ring of the intermediate bearing 32 is positioned by the shaft shoulder of the stepped spindle 15, the shaft shoulder is in interference fit with the inner ring of the intermediate bearing 32 in a hole-based mode, and pre-tightening rigidity is set to avoid large stress deformation of the spindle-inner ring caused by instantaneous overload in the bearing test process.
Only the front sensing part of the flow sensor 54 is positioned in the oil leakage pipeline; the lubricating oil in the oil leakage pipeline flows out of the oil leakage pipeline through the oil scrap sensor 53.
A method for testing the lubricating performance of a lubricating structure of an intermediate bearing under the rotation of an inner ring and an outer ring comprises the following steps:
The lubricating parameters comprise the flow rate of the lubricating nozzle and the angle of the lubricating nozzle.
The invention has the beneficial effects that:
(1) The invention provides a lubricating performance observation test device of an intermediary bearing lubricating structure under the rotation of an inner ring and an outer ring, which adopts a lubricating oil receiving structure under an intermediary bearing ring to be matched with a high-speed camera to collect image information at the same time, can observe the flow characteristic of the lubrication under the ring and the flow distribution characteristics of the left side and the right side of the intermediary bearing caused by the lubrication under the ring, and thus provides support for the guide design of the lubricating structure of the bearing;
(2) One end of the invention adopts a motor arrangement to drive the inner ring of the intermediate bearing to rotate, and the motor at the other end drives a pair of bevel gears to rotate through a universal gear shaft, thereby driving the outer ring of the tested bearing to rotate, realizing the synchronous rotation of the inner ring and the outer ring of the intermediate bearing, and simultaneously reserving an observation space for the observation of a high-speed camera at the right side;
(3) According to the invention, oil return structures for distributed oil collection are adopted on the left side and the right side of the intermediate bearing and are matched with a flow sensor and an oil scrap sensor to measure the oil return flow and the abrasion characteristic of the left side and the right side of the intermediate bearing, and the supply conditions of the flow on the two sides under the intermediate bearing ring and the side spray lubrication condition are contrastively analyzed;
(4) According to the invention, the temperature change caused by the flow of the intermediate bearing can be analyzed by monitoring the return oil flow on the left side and the right side of the intermediate bearing and combining the measurement modes of the temperature on the left side and the right side of the intermediate bearing, and the relation between the flow field characteristic and the temperature characteristic of the intermediate bearing is established;
(5) According to the invention, the through-hole gas-electric slip ring is arranged on the intermediate bearing sleeve, the upper end of the intermediate bearing sleeve is connected with the temperature sensor, and the lower end of the intermediate bearing sleeve is matched with the oil blocking structure to be connected with the oil return pipeline, so that the measurement of the temperature of the left side and the right side of the outer ring of the intermediate bearing and the collection of the right side oil return flow are realized.
Drawings
FIG. 1 is a schematic diagram of the operation of a lubricating performance observation test device of a lubricating structure of an intermediate bearing under the rotation of an inner ring and an outer ring;
FIG. 2 is an overall sectional view of the lubricating property observation test device of the lubricating structure of the intermediate bearing under the rotation of the inner and outer races according to the present invention;
FIG. 3 (a) is an isometric view of an inner race drive system;
FIG. 3 (b) is a sectional view of the inner race drive system;
FIG. 4 is a diagram of the outer race drive system;
FIG. 5 is a block diagram of an intermediate bearing system;
FIG. 6 (a) is a view showing the structure of a fuel injection system;
FIG. 6 (b) is a partial enlarged view of the fuel injection system;
FIG. 7 (a) is a view showing the structure of an oil return system;
FIG. 7 (b) is a view showing the structure of the intermediate bearing sleeve;
FIG. 7 (c) is a partial enlarged view of the right side oil return system;
FIG. 7 (d) is a partial enlarged view of the left side oil return system;
FIG. 8 is a diagram of a temperature measurement system;
FIG. 9 is an isometric view of an intermediate bearing sleeve support system;
FIG. 10 is an isometric view of a vision system;
FIG. 11 is an isometric view of the housing;
FIG. 12 is a schematic view of a base of the test stand;
fig. 13 is an overall configuration diagram of a lubricating performance observation test apparatus of an intermediate bearing lubricating structure under rotation of inner and outer races.
In the figure: 1-an inner ring drive system; 2-outer ring drive system; 3-an intermediate bearing system; 4-oil injection system; 5-an oil return system; 6-a temperature measuring system; 7-intermediate bearing sleeve support system; 8-an observation system; 9-a box body; 10-a test stand base; 11-a motor base; 12-servo motor a; 13-coupling a; 14-supporting the bearing block system; 15-a stepped spindle; 141-deep groove ball bearing a; 142-bearing seat a; 143-gland a; 144-a sleeve; 21-servo motor b; 22-coupling b; 23-a motor support; 24-a flange plate; 25-a gear shaft; 26-drive bevel gear; 27-deep groove ball bearing b; 28-a bearing sleeve; 29-bearing seat b; 30-a gland b; 31-an eccentric disc; 32-intermediate bearings; 33-hydraulic cover; 41-spraying a pipeline at the lower side of the ring; 42-a pipe cap; 43-ring lower oil collecting ring; 44-a lock nut; 51-left side oil return system; 52-right side oil return system; 53-oil debris sensor; 54-a flow sensor; 521-a temperature sensor pipe; 522-slinger; 523-driven bevel gear; 524-intermediate bearing sleeve; 525-through-hole type gas-electric slip ring; 52-6 oil return pipes; 527-spiral U groove; 61-left temperature sensor; 62-right side temperature sensor; 71-deep groove ball support bearing; 7-2 supporting the bearing seat; 73-hydraulic cover; 81-coaxial light source; 82-CCD high-speed camera; 83-observation base; 91-left end cover of box body; 92-a housing; 93-right glass end cover of the box body.
Detailed Description
The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.
It should be understood that the appended drawings are not to scale, but are merely drawn with appropriate simplifications to illustrate various features of the basic principles of the invention. The specific design features of the invention, including, for example, specific dimensions, orientations, locations, and configurations, will be determined in part by the particular intended application and environment of use. In the several figures of the drawings, identical or equivalent components (elements) are referenced with the same reference numerals. In the description of the present invention, it is to be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
With reference to fig. 1, the working principle is as follows: the inner ring rotates at W speed when the inner and outer rings of the intermediate bearing rotate synchronously 1 The outer ring is W 2 (ii) a The lubricating oil enters the intermediate bearing 32 through two lubricating modes of side spraying and under ring, and the flow rates are L respectively Side wall And L Ring (C) (ii) a Part of the oil flows out from the right side through the inside of the intermediate bearing, and part of the oil is rebounded back to flow out from the left side of the intermediate bearing, so as to compare the oil return flow L of the two sides Left side of And L Side wall And both side wear conditions C 1 And C 2 The oil return systems on both sides are provided with a flow sensor 54 and an oil scrap sensor 53; the through hole type gas-electric slip ring fixed on the intermediate bearing sleeve 524 is provided with a temperature sensor for measuring the temperature T1 of the inner ring and the temperature T2 of the outer ring of the intermediate bearing; the coupling relation among the three lubricating properties is obtained by collecting and analyzing the experimental data of the lubricating properties.
Referring to fig. 2, the lubricating performance observation test device of the intermediate bearing lubricating structure with the inner ring and the outer ring rotating comprises a servo motor a12 and a servo motor b21 which are loaded in two directions and connected with a box 9 through a coupler a13 and a coupler b22, a tested intermediate bearing 32 is installed on a stepped spindle 15, an oil injection system 4 is installed on the box 9, oil return systems 5 are designed on the left side and the right side of the intermediate bearing 32, sensors are installed on the left side and the right side of the intermediate bearing for monitoring the temperature, the flow and the wear characteristics, and an observation system 8 is installed on a test bed base 10 through bolts.
Referring to fig. 3, the inner ring driving system 1 is composed of a motor base 11, a servo motor a12, a coupler b13, a support bearing seat system 14, and a stepped spindle 15. The supporting bearing seat system 14 is composed of a deep groove ball bearing a141, a bearing seat a142, a gland a143 and a sleeve 144. One end of the stepped spindle 15 is connected with a servo motor a12 through a coupler a13, the other end of the stepped spindle is provided with an intermediate bearing 32, and the middle section of the stepped spindle 15 is provided with two deep groove ball supporting bearings a141 for positioning and supporting, so that the axial movement of the stepped spindle 15 is limited, the main load of the stepped spindle 15 is borne, and the stepped spindle is prevented from generating overlarge deflection deformation. The bearing seat a142 is connected with the test bed base 10 through a bolt, and plays a role in fixing and supporting the two deep groove ball bearings a141 on the ladder main shaft 15. The sleeve 144 axially fixes the deep groove ball bearing a141. The servo motor a12 transmits torque to the stepped spindle 15 through a coupler a13 so as to drive the intermediate bearing inner ring to rotate. The upper surface and the lower surface of the motor base 11 are respectively connected with the servo motor a12 and the test bed base 10 through fastening bolts.
Referring to fig. 4, the outer ring driving system 2 is composed of a servo motor b21, a coupling b22, a motor bracket 23, a flange plate 24, a gear shaft 25, a driving bevel gear 26, a deep groove ball bearing b27, a bearing sleeve 28, a bearing seat b29 and a gland b 30. The flange 24 and the housing 92 are positioned using the notch to secure the bearing seat b 29. The output shaft of the servo motor b21 is connected with the coupling b22, the servo motor b21 transmits the torque to the gear shaft 25 through the coupling b22, the gear shaft 25 drives a pair of bevel gears to rotate the intermediate bearing sleeve 524, wherein the driven bevel gear 523 is welded with the intermediate bearing sleeve 524, and the intermediate bearing sleeve 524 is in transition fit with the intermediate bearing outer ring, so that the intermediate bearing 32 outer ring can be driven to rotate.
Referring to fig. 5, the intermediate bearing system 3 is composed of an eccentric disc 31, an intermediate bearing 32, and a hydraulic cover 33. The hydraulic cover 33 is fixedly connected with the intermediate bearing 32 through bolts, and the inner ring of the intermediate bearing 32 is tightly pressed inside the hydraulic cover 33 to prevent the measured bearing from falling off and moving rightwards. The eccentric disc 31 is caught in a designated groove of the intermediate bearing sleeve 524, and transfers a centrifugal load to the intermediate bearing 32 as the intermediate bearing sleeve 524 rotates, thereby simulating a working environment of the intermediate bearing 32. The left side of the inner ring of the intermediate bearing 32 is positioned through the shaft shoulder of the stepped spindle 15, and is in interference fit with the inner ring in a base hole mode, so that the spindle-inner ring is prevented from generating overlarge stress deformation due to instantaneous overload in the bearing testing process by high pre-tightening rigidity.
Referring to fig. 6 (a), the oil injection system 4 is composed of a ring lower side injection pipe 41, a pipe cover 42, a ring lower oil receiving ring 43, and a lock nut 44. The lower side spray pipe 41 of the ring is welded with a left end cover 91 of the box body. The lock nut 44 axially fixes the lower oil receiving ring 43. The side spray nozzles spray oil and lubricate the rotating body of the intermediate bearing 32; the ring-under lubrication is that the lubricating oil enters the oil inlet hole at the bottom of the intermediate bearing 32 through the oil groove at the bottom of the ring-under oil collecting ring 43 to deliver the oil into the intermediate bearing 32.
With reference to fig. 6 (b), under the condition that the pipe caps 42 of the ring lower side injection pipes are all opened, the lubricating oil jet flow sprayed from the lubricating nozzles of the ring lower side injection pipes is sprayed to the oil receiving grooves of the ring lower oil receiving rings 43 through the air field in the bearing cavity, the lubricating oil entering the oil receiving channels of the ring lower oil receiving rings 43 through the oil receiving inlets flows along the inner surfaces of the oil receiving blades, flows through the protrusions of the blades on the oil receiving blades and then enters the front oil collecting ring grooves, and then enters the inside of the bearing through the double oil inlets at the bottom of the inner ring of the intermediate bearing.
Referring to fig. 7 (a), the oil return system 5 includes a left oil return system 51, a right oil return system 52, an oil debris sensor 53, and a flow sensor 54. The right oil return system 52 is composed of a temperature sensor pipeline 521, an oil slinger 522, a driven bevel gear 523, an intermediate bearing sleeve 524, a through hole type gas-electric slip ring 525, an oil return pipe 526 and a spiral U-shaped groove 527. The left oil return system 51 is located on the left side of the intermediate bearing 32, and an oil leakage pipeline of the left oil return system is embedded in the bottom of the box body and then extends out of the left end cover 91 of the box body, so as to collect the lubricating oil rebounded and thrown out of the left side of the intermediate bearing. The right oil return system 52 is located at the right side of the intermediate bearing 32 and is used for collecting the lubricating oil sprayed out from the right side of the intermediate bearing.
Referring to fig. 7 (b) -7 (d), the spiral U-groove 527 is embedded in the intermediate bearing sleeve 524, and the spiral U-groove 527 has an opening end receiving the lubricant oil injected from the right side of the intermediate bearing 32 and a distal end connected to the inlet of the oil return pipe 526 for introducing the lubricant oil into the oil return pipe 526. The through-hole type gas-electric slip ring 525 is fixedly arranged in a groove designated by the intermediate bearing sleeve 524, and the right side of the through-hole type gas-electric slip ring is used for ensuring that the driven bevel gear 523 keeps a certain distance from the normal operation; the rotating end of the through hole type gas-electric slip ring 525 is connected with the right side oil return pipe, and the static end is connected with the right side oil leakage pipe. The oil slinger 522 is located immediately adjacent to the oil return pipe 526 to maximize the concentration of the oil ejected from the right side to the oil return pipe 526 therebelow. The oil scrap sensor 53 and the flow sensor 54 are both arranged on oil leakage pipes on the left side and the right side, and are connected with the flow sensor 54 and then connected with the oil scrap sensor 53; only the front sensing part of the flow sensor 54 is located in the leakage oil pipe, and the lubricating oil in the leakage oil pipe completely passes through the oil debris sensor 53 and then flows out of the leakage oil pipe, so that the flow sensor is used for measuring the flow and the abrasion of the left side and the right side of the intermediate bearing.
Referring to fig. 8, the temperature measuring system 6 is composed of a left temperature sensor 61 and a right temperature sensor 62. The temperature sensor pipe 521 vertical through hole passes through the right temperature sensor, and the horizontal hole passes through the left temperature sensor. The rotating end of the via hole type gas-electric slip ring 525 is connected with the inner data lines of the temperature sensors on the left side and the right side, and the static end of the via hole type gas-electric slip ring is connected with the outer data lines to output temperature data on the two sides. The two temperature sensors respectively collect temperature comparison data of the left side and the right side of the outer ring of the intermediate bearing 32.
Referring to fig. 9, the tested bearing sleeve support system 7 is composed of a deep groove ball support bearing 71, a support bearing seat 72 and a hydraulic cover 73. The support bearing 71 and the bearing sleeve 524 to be measured are in interference fit in a hole-based manner. The supporting bearing seat 72 is fixedly connected with the box body 9 through bolts, and the supporting bearing seat 72 is fixedly connected with the shell 92 through bolts. The inner-buckled hydraulic cover 73 is fixedly connected with the supporting bearing seat 72 through bolts, and the outer ring of the intermediate bearing 32 is pressed inside the hydraulic cover 73 to prevent the outer ring from falling off and moving left and right.
Referring to fig. 10, the observation system 8 is composed of a coaxial light source 81, a CCD high-speed camera 82, and an observation base 83. The base 83 is connected with the T-shaped workbench 10 through bolts; the coaxial light source 81 and the CCD high-speed camera 82 are connected to a base 83 by bolts. The coaxial light source gathers the diffused light, and the CCD high-speed camera realizes the image acquisition of the lubrication condition of the detected bearing in the working process.
Referring to fig. 11, the box 9 is composed of a left box end cover 91, a housing 92, and a right box glass end cover 93. The left box end cover 91 is connected with the shell 92 through a bolt, the right box glass end cover 93 is connected with the shell 92 through a bolt, and the shell 92 is connected with the test bed base 10 through a bolt; drilling a through hole in the upper part of the left end cover to transport lubricating oil; the shell 92 adopts an up-down split structure, which is beneficial to convenient installation and disassembly, and the intermediary bearing system 3, the oil return system 5, the temperature measuring system 6 and the intermediary bearing sleeve supporting system 7 are all arranged inside the box body 9; the right glass end cover 93 of the box body is convenient for clearly observing the motion state of the lubricating oil between each contact surface of the tested bearing under different lubricating conditions and different working conditions.
The above description of exemplary embodiments has been presented only to illustrate the technical solution of the invention and is not intended to be exhaustive or to limit the invention to the precise form described. Obviously, many modifications and variations are possible in light of the above teaching to those skilled in the art. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to thereby enable others skilled in the art to understand, implement and utilize the invention in various exemplary embodiments and with various alternatives and modifications.
Claims (6)
1. A lubricating property observation test device of an intermediary bearing lubricating structure under rotation of an inner ring and an outer ring is characterized by comprising an inner ring driving system (1), an outer ring driving system (2), an intermediary bearing system (3), an oil injection system (4), an oil return system (5), a temperature measurement system (6), an intermediary bearing sleeve supporting system (7), an observation system (8), a box body (9) and a test bed base (10); the inner ring driving system (1), the box body (9) and the observation system (8) are sequentially arranged on a test bed base (10);
the box body (9) comprises a box body left end cover (91), a shell (92) and a box body right glass end cover (93); the shell (92) is of an up-down split structure and is arranged on the base (10) of the test bed, and two ends of the shell are respectively connected with a left box body end cover (91) and a right box body glass end cover (93); the medium bearing system (3), the oil return system (5), the temperature measuring system (6) and the medium bearing sleeve supporting system (7) are all arranged in the box body (9); a notch is formed in the top end of the shell (92) and used for fixing the outer ring driving system (2); a through hole is drilled in the upper part of the left end cover (91) of the box body and is used for connecting the oil injection system (4) and transporting lubricating oil; the right glass end cover (93) of the box body is used for observing the motion state of each contact surface of the detected bearing of the shell (92);
the inner ring driving system (1) mainly comprises a motor base (11), a servo motor a (12), a coupler a (13), a supporting bearing seat system (14) and a stepped spindle (15); one end of the stepped main shaft (15) is connected with the servo motor a (12) through a coupler a (13), and the other end of the stepped main shaft is connected with the inner ring of the intermediate bearing (32); a supporting bearing seat system (14) is installed on the stepped main shaft (15), and the supporting bearing seat system (14) is fixed on the test bed base (10) through a T-shaped workbench; the servo motor a (12) is fixed on the test bed base (10) through the motor base (11); the servo motor a (12) transmits torque to the stepped spindle (15) through a coupler a (13) so as to drive the inner ring of the medium bearing (32) to rotate; the supporting bearing seat system (14) comprises a deep groove ball bearing a (141), a bearing seat a (142), a gland a (143) and a sleeve (144); the bearing seat a (142) is sleeved on the stepped spindle (15), and a gap exists between the bearing seat a and the stepped spindle; two ends of a bearing seat a (142) are fixed with a gland a (143); two deep groove ball bearings (141) are arranged in a gap between the bearing seat a (142) and the stepped spindle (15) and used for positioning and supporting the stepped spindle (15), limiting the axial movement of the stepped spindle (15), bearing the main load of the stepped spindle (15) and preventing the stepped spindle from generating large deflection deformation; a sleeve (144) is arranged between two deep groove ball bearings a (141) on the stepped main shaft (15) and used for axially fixing the deep groove ball bearings a (141);
the outer ring driving system (2) mainly comprises a servo motor b (21), a coupler b (22), a motor support (23), a flange plate (24), a gear shaft (25), a driving bevel gear (26), a deep groove ball bearing b (27), a bearing sleeve (28), a bearing seat b (29) and a gland b (30); an output shaft of the servo motor (21) is sequentially connected with a coupler b (22), a gear shaft (25) and a pair of driving bevel gears (26); the driving bevel gear (26) is meshed with a driven bevel gear (523) welded on an intermediate bearing sleeve (524), and the intermediate bearing sleeve (524) is positioned outside the outer ring of the intermediate bearing (32) and is in transition fit with the outer ring; a bearing seat b (29) is sleeved on the gear shaft (25), and a gap is formed between the bearing seat b and the bearing seat b; the bearing seat b (29) and the gland b (30) form a closed space; a bearing sleeve (28) and two deep groove ball bearings b (27) are sleeved in the closed space from outside to inside in sequence; the end part of the bearing seat b (29) passes through the notch of the shell (92), and the side surface of the bearing seat b is fixed on the shell (92) through a flange plate (24); the servo motor (21) is fixed on the shell (92) through a motor bracket (23); the servo motor (21) transmits torque to the gear shaft (25) through the coupler (22), the gear shaft (25) drives the driving bevel gear (26) to rotate, the intermediate bearing sleeve (524) is further rotated, and finally the outer ring of the intermediate bearing (32) is driven to rotate;
the medium bearing system (3) mainly comprises an eccentric disc (31), a medium bearing (32) and a hydraulic cover (33); the inner side of the intermediate bearing (32) is fixedly connected with a hydraulic cover (33), and the hydraulic cover (33) compresses the inner ring of the intermediate bearing (32) to prevent the inner ring from falling off and moving; an eccentric disc (31) is arranged on the outer side of the intermediate bearing (32), the eccentric disc (31) is clamped in a groove arranged on the intermediate bearing sleeve (524), and centrifugal load is transmitted to the intermediate bearing (32) along with the rotation of the intermediate bearing sleeve (524) so as to simulate the working environment of the intermediate bearing (32);
the oil injection system (4) mainly comprises an annular lower side spray pipe (41), a pipe cover (42), an annular lower oil collecting ring (43) and a locking nut (44); the lower side spraying pipeline (41) of the ring is welded on the left end cover (91) of the box body and is communicated with the through hole of the left end cover (91) of the box body; the annular lower side spraying pipeline (41) comprises an annular lower pipeline and a side spraying pipeline, and one end of each of the two pipelines is provided with a lubricating nozzle with a pipeline cover (42); the lower oil receiving ring (43) is fixed on the outer side of the stepped main shaft (15) through a locking nut (44), a lubricating nozzle of a lower ring pipeline is positioned above the lower oil receiving ring (43), and an oil groove of the lower oil receiving ring (43) is communicated with an oil inlet hole in the bottom of the intermediate bearing (32) through the stepped main shaft (15); the lubricating nozzle of the side spray pipeline is positioned at one side of the rotating body of the intermediate bearing (32);
the oil return system (5) mainly comprises a left oil return system (51), a right oil return system (52), an oil scrap sensor (53) and a flow sensor (54); the left oil return system (51) is positioned at one side of the intermediate bearing (32), and a left oil leakage pipeline of the left oil return system is embedded in the bottom of the box body (9) and then extends out of a left end cover (91) of the box body and is used for collecting lubricating oil rebounded and thrown out from one side of the intermediate bearing (32); the right oil return system (52) is positioned at the other side of the intermediate bearing (32) and is used for collecting the lubricating oil sprayed out from the other side of the intermediate bearing (32); the right oil return system (52) comprises a temperature sensor pipeline (521), an oil scraper ring (522), a driven bevel gear (523), an intermediate bearing sleeve (524), a through hole type pneumatic-electric slip ring (525), an oil return pipe (526) and a spiral U-shaped groove (527); the spiral U-shaped groove (527) is embedded in the intermediate bearing sleeve (524), one end of the spiral U-shaped groove is used for bearing lubricating oil jetted out from the other side of the intermediate bearing (32), the other end of the spiral U-shaped groove is sequentially connected with an oil return pipe (526) and a rotating end of a through hole type gas-electric slip ring (525), the through hole type gas-electric slip ring (525) is fixed on the outer side of the intermediate bearing sleeve (524), a gap exists between the through hole type gas-electric slip ring and the driven bevel gear (523), and normal operation of the driven bevel gear (523) is guaranteed; the static end of the through hole type gas-electric slip ring (525) is connected with the right oil leakage pipeline; the right oil leakage pipeline is embedded in the bottom of the box body (9) and then extends out of a right glass end cover (93) of the box body; an oil retainer ring 522 fixed to the inside of the intermediate bearing sleeve 524 and located on one side of the oil return pipe 526 for retaining the lubricating oil jetted from the other side of the intermediate bearing 32 and collecting the lubricating oil into the oil return pipe 526 below; a flow sensor (54) and an oil scrap sensor (53) are sequentially arranged on the oil leakage pipeline and used for measuring the flow and the abrasion condition of lubricating oil on two sides of the intermediate bearing (32); a temperature sensor conduit (521) is arranged in the cylinder wall of the intermediate bearing sleeve (524), comprising a vertical through hole and a horizontal hole;
the temperature measuring system (6) comprises a left side temperature sensor (61) and a right side temperature sensor (62); one end of the left temperature sensor (61) is connected with one side of the outer ring of the intermediate bearing (32), and the other end of the left temperature sensor is connected to the rotating end of the through hole type gas-electric slip ring (525) through a horizontal hole of a temperature sensor pipeline (521); one end of a right temperature sensor (62) is connected with the other side of the outer ring of the intermediate bearing (32), and the other end of the right temperature sensor is connected to the rotating end of the through hole type gas-electric slip ring (525) through a vertical through hole of a temperature sensor pipeline (521); the left temperature sensor (61) and the right temperature sensor (62) respectively acquire temperature comparison data of two sides of the outer ring of the intermediate bearing (32); the static end of the through hole type gas-electric slip ring (525) is connected with an external data line to output temperature;
the tested bearing sleeve supporting system (7) comprises a deep groove ball supporting bearing (71), a supporting bearing seat (72) and a hydraulic cover (73); the deep groove ball supporting bearing (71) is in interference fit with the intermediate bearing sleeve (524) in a base hole mode; the supporting bearing seat (72) is sleeved outside the deep groove ball supporting bearing (71) and is fixedly connected with the box body (9); a hydraulic cover (73) is fixed between the support bearing seat (72) and the deep groove ball support bearing (71), and an intermediate bearing sleeve (524) is pressed inside the hydraulic cover (73), so that an outer ring of the intermediate bearing (32) is placed to fall off and move;
the observation system (8) comprises a coaxial light source (81), a CCD high-speed camera (82) and an observation base (83); the observation base (83) is connected with the test bed base (10) through a 'n' -shaped workbench; the coaxial light source (81) and the CCD high-speed camera (82) are sequentially fixed on the observation base (83); the coaxial light source (81) gathers the diffused light, and the CCD high-speed camera (82) realizes the image acquisition of the lubrication condition of the detected bearing in the working process.
2. The apparatus for observing the lubrication performance of a lubricating structure of an intermediate bearing under rotation of inner and outer races as claimed in claim 1, wherein the test bed base (10) is provided with a plurality of tracks, and the inner race drive system (1), the casing (9) and the observation system (8) are fixed after moving on the tracks.
3. The device for observing and testing the lubricating property of a medium bearing lubricating structure under the condition of inner and outer ring rotation according to claim 1 or 2, characterized in that one side of the inner ring of the medium bearing (32) is positioned by the shoulder of the stepped spindle (15), the shoulder and the inner ring of the medium bearing (32) are in interference fit in a base hole mode, and the pre-tightening stiffness is set to avoid the spindle-inner ring from generating large stress deformation due to instantaneous overload during the bearing test.
4. The device for observing and testing the lubricating performance of the intermediate bearing lubricating structure under the condition of inner and outer ring rotation as claimed in claim 3, wherein only the front sensing part of the flow sensor (54) is positioned in the oil leakage pipeline; all the lubricating oil in the oil leakage pipeline flows out of the oil leakage pipeline through the oil scrap sensor (53).
5. A lubricating performance test method of a medium bearing lubricating structure under the condition of rotation of an inner ring and an outer ring is characterized by comprising the following steps:
step 1, starting a servo motor a (12) and a servo motor b (21) to respectively drive a stepped spindle (15) and a gear shaft (25) to rotate, so that an inner ring and an outer ring of an intermediate bearing (32) synchronously rotate; an eccentric load is applied to the intermediate bearing (32) through an eccentric disc (31) on a bearing sleeve (524), and a working environment is simulated;
step 2, by controlling the opening and closing conditions of the pipe covers (42) at two positions of the lower ring pipe and the side spraying pipe, and simultaneously matching with a left oil return system (51), a right oil return system (52), a flow sensor (54) and an oil dust sensor (53) at two sides of the intermediate bearing (32), the oil return flow and the abrasion characteristics at the left side and the right side of the intermediate bearing (32) are monitored, and the supply conditions of the flow at two sides of the intermediate bearing (32) under three conditions of only under-ring lubrication, only side spraying lubrication and simultaneously under-ring and side spraying lubrication of the intermediate bearing (32) are contrastively analyzed;
step 3, the via hole gas electric slip ring (525) is connected with a left side temperature sensor (61) and a right side temperature sensor (62) which are used for monitoring the temperature of the left side and the right side of the outer ring of the intermediate bearing (32), the rotating end of the via hole gas electric slip ring (525) rotates together with the intermediate bearing (32), the static end outputs temperature data, and the temperature of the left side and the right side of the outer ring of the intermediate bearing (32) in the lubricating process is collected;
step 4, changing lubricating parameters, and monitoring oil return flow and abrasion of the left side and the right side of the intermediate bearing (32) and the temperature of the left side and the right side of the outer ring under different lubricating conditions; relationships are established between flow field characteristics, temperature characteristics, and wear characteristics of the intermediate bearing (32).
6. The method of claim 5, wherein the lubrication parameters include flow rate of lubrication nozzles and lubrication nozzle angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310036881.1A CN115962939A (en) | 2023-01-10 | 2023-01-10 | Device and method for observing and testing lubricating performance of intermediate bearing lubricating structure under rotation of inner ring and outer ring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310036881.1A CN115962939A (en) | 2023-01-10 | 2023-01-10 | Device and method for observing and testing lubricating performance of intermediate bearing lubricating structure under rotation of inner ring and outer ring |
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| CN202310036881.1A Pending CN115962939A (en) | 2023-01-10 | 2023-01-10 | Device and method for observing and testing lubricating performance of intermediate bearing lubricating structure under rotation of inner ring and outer ring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117074020A (en) * | 2023-07-17 | 2023-11-17 | 泰安海纳轴研科技有限公司 | Testing device and testing method for oil-gas lubrication bearing performance and lubricant flow |
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2023
- 2023-01-10 CN CN202310036881.1A patent/CN115962939A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117074020A (en) * | 2023-07-17 | 2023-11-17 | 泰安海纳轴研科技有限公司 | Testing device and testing method for oil-gas lubrication bearing performance and lubricant flow |
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