Anti-splashing performance testing machine for outer spherical bearing
Technical Field
The invention relates to test equipment, in particular to an anti-splashing performance tester for an outer spherical bearing.
Background
Rolling bearings are one of the most widely used key foundations for various types of machinery. The anti-splash performance of the rolling bearing is an important performance index of the bearing, and the anti-splash performance of the bearing directly affects the overall performance of a mechanical system. The applicability of the mechanical system is affected when the splash resistance of the rolling bearing is poor, and additional use cost is added.
The outer spherical bearing is a rolling bearing unit in which a rolling bearing and a bearing housing are combined together. Most of the outer spherical bearings are spherical in outer diameter and are installed with bearing seats with spherical inner holes, so that the outer spherical bearings are various in structural form and good in universality and interchangeability. The outer spherical bearing has compact structure, reliable sealing and convenient assembly and disassembly, and is mainly suitable for low-speed and heavy-load occasions. Has wide application in the fields of agriculture, textile, mining, metallurgy, chemical industry, conveying machinery and the like.
At present, with the continuous expansion of the requirements and application range of the outer spherical bearing with a seat, the requirements of the outer spherical bearing production enterprises and bearing users on the anti-splashing performance reliability of the outer spherical bearing are more and more strict, and the development of the anti-splashing performance test of the outer spherical bearing is urgent in industry. However, the research on the splash resistance of the external spherical bearing in China is relatively insufficient at present, and a special testing machine is not available to meet the test requirement.
Disclosure of Invention
The invention aims to provide an outer spherical bearing splash resistance testing machine which is suitable for an outer spherical bearing splash resistance test with the inner diameter of phi 20-60mm and is used for checking the capability of the outer spherical bearing with or without a seat for resisting the invasion of mud, salt water, oil or other media.
The aim of the invention is realized by the following technical scheme: an outer spherical bearing anti-splash performance testing machine for detecting the anti-splash performance of two sets of test bearings, the testing machine comprises: the test head comprises a rack, a test head part, two sets of loading parts, a main shaft part, a splash system, an electrical control system, a computer monitoring system and a protective cover; wherein the spindle unit, the splash system and the shield are fixed on the frame; the test head part is arranged on the main shaft part, and the two sets of loading parts are symmetrically fixed on the main shaft part; the loading component is positioned above the test bearing and is used for loading radial load on the test bearing; the splashing system is positioned in front of the test bearing and splashes liquid from different directions to the test bearing; the electric control system is arranged in the rack and controls the test machine to run; the computer monitoring system is connected with the electrical control system and is arranged on the right side of the testing machine.
Further, the trial head piece comprises a trial mandrel, a spacer sleeve and a retaining sleeve; the test mandrel is arranged on the main shaft component, the isolating sleeve, the test bearing and the fixing sleeve are sequentially arranged on the test mandrel, and the fixing sleeve is fixed on the test mandrel through screws.
Further, the loading component comprises an anti-rotation screw, a connecting screw, two bearing clamping blocks, a bearing seat, a joint bearing sleeve, a force sensor, an anti-rotation plate, a loading spring, a spring sleeve, a thrust ball bearing, a pull rod, a hand wheel, a loading seat and a joint bearing; the loading seat is arranged on the main shaft component, the anti-rotation plate is arranged on the loading seat, the pull rod penetrates through the loading seat and is arranged on the loading seat through an anti-rotation screw, the lower end of the pull rod is connected with one end of the force sensor, the other end of the force sensor is connected with the joint bearing, the joint bearing is connected with the joint bearing sleeve through a connecting screw, the joint bearing sleeve is fixed on the bearing seat, two bearing clamping blocks are arranged on the bearing seat, the test bearing is fixed on the two bearing clamping blocks, and the upper end of the pull rod is sequentially provided with a loading spring, a spring sleeve, a thrust ball bearing and a hand wheel.
Further, the main shaft component comprises two framework oil seals, two elastic collars for shafts, a wave-shaped elastic washer, two sets of support bearings, a main shaft, two synchronous pulleys, a flat key, a main shaft shell, two O-shaped sealing rings and two end covers; the main motor is arranged on the frame, one synchronous pulley is arranged on the main motor, the other synchronous pulley is fixed on the middle position of the main shaft through a flat key, the two synchronous pulleys are connected through a synchronous belt, two ends of the main shaft are symmetrically and sequentially arranged on the main shaft shell after being provided with support bearings and elastic collars for shafts, the two elastic collars for shafts are used for fixing the positions of the two sets of support bearings, the waveform elastic washers are arranged at one end of the main shaft shell, a framework oil seal and an O-shaped sealing ring are arranged on end covers, and the two end covers are symmetrically fixed on the main shaft shell.
Further, the splashing system comprises an inclined spray pipe ram, a star-shaped nut, a spray pipe clamping body, a screw locking sleeve, an inclined spray pipe, a straight spray pipe, a quick connector, a screw, an inclined spray pipe fixing sleeve, an inclined spray pipe locking sleeve, a T-shaped underframe, a trundle, a mud water box body, a direct spray submersible pump, an inclined spray submersible pump, a hanging rod and a ball valve; the T-shaped underframe is fixed on the frame, the screw rod is arranged on the T-shaped underframe and is fixed by a star nut; the screw locking sleeve is sleeved in the spray pipe clamping body and then is arranged on the screw, and is fixed by a star nut; the inclined spray pipe ram is arranged at the upper end of the spray pipe clamping body, the inclined spray pipe locking sleeve is arranged on the inclined spray pipe ram, the inclined spray pipe fixing sleeve is fixed by a star-shaped nut after being arranged in the inclined spray pipe locking sleeve, and the inclined spray pipe is arranged on the inclined spray pipe fixing sleeve; the straight spray pipe is arranged at the lower end of the spray pipe clamping body; the truckle is fixed on mud water tank body bottom surface, and direct injection immersible pump and oblique immersible pump hang in the mud water tank body with the peg, direct injection immersible pump and oblique jetting immersible pump pass through the pipeline and link to each other with direct spray pipe and oblique spray pipe respectively, install the ball valve on the pipeline.
The beneficial effects of the invention are as follows: the testing machine is simple to operate, convenient and effective, the testing environment meets the specific use environment of the external spherical bearing, and the testing machine can be used for checking the capability of the external spherical bearing with or without the seat for resisting the invasion of mud, salt water, oil or other mediums (such as tap water or acid/alkaline liquid). The computer displays the load, the rotating speed and the accumulated test time of the test bearing, is visual and clear, can set a plurality of time periods by itself, can set the rotating speed of each period and the time length of idling, direct injection, idling, oblique injection and stopping, has strong practicability, can automatically stop according to the set test time, and saves manpower. The test result meets the condition of the outer spherical bearing in actual use, and can greatly shorten the test period and save the test cost.
Drawings
FIG. 1 is a front view of an outer spherical bearing splash resistance tester;
FIG. 2 is a left side view of the outer spherical bearing splash resistance tester;
FIG. 3 is a perspective view of an outer spherical bearing splash resistance tester;
FIG. 4 is a schematic view of a test head assembly, (a) being a side view and (b) being a front view;
FIG. 5 is a schematic view of a loading unit, (a) a side view, and (b) a front view;
FIG. 6 is a schematic diagram of a spindle assembly;
FIG. 7 is a schematic view of a splash component, (a) is a front view, and (b) is a side view;
FIG. 8 is a schematic view of a mud water tank, (a) being a front view and (b) being a side view;
FIG. 9 is a schematic diagram of a computer monitoring system;
fig. 10 is a view of the UCP-series bearing loading installation, (a) front view, and (b) side view;
fig. 11 is a view of the UCF series bearing loading installation, (a) front view, and (b) side view;
fig. 12 shows a loading installation view of the UC series bearing, (a) a front view and (b) a side view;
in the figure, a frame 1, a test head part 2, a loading part 3, a main shaft part 4, a splash system 5, an electric control system 6, a computer monitoring system 7, a protective cover 8, a driving motor 9, a synchronous belt 10, a test mandrel 11, a spacer sleeve 12, a test bearing 13, a fixed sleeve 14, an anti-rotation screw 15, a connecting screw 16, a bearing clamping block 17, a bearing seat 18, a joint bearing sleeve 19, a force sensor 20, an anti-rotation plate 21, a loading spring 22, a spring sleeve 23, a thrust ball bearing 24, a pull rod 25, a hand wheel 26, a loading seat 27, a joint bearing 28, a framework oil seal 29, a shaft circlip 30, a wave spring washer 31, a supporting bearing 32, a main shaft 33, a synchronous pulley 34, a flat key 35, a main shaft housing 36, an O-shaped sealing ring 37, an end cover 38, a bevel nozzle ram 39, a star nut 40, a nozzle clamping body 41, a screw locking sleeve 42, a bevel nozzle 43, a quick joint 44, a direct nozzle 45, a screw 46, a bevel nozzle fixing sleeve 47, a bevel nozzle locking sleeve 48, a T-shaped underframe 49, a trundle 50, a mud tank 51, a direct nozzle submersible pump 52, a bevel ball valve 54, a bevel nozzle suspension pump 55, and a bevel nozzle suspension pump 55 are shown.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
Referring to fig. 1, 2 and 3, the outer spherical bearing splash resistance tester of the embodiment comprises a frame 1, a test head part 2, two sets of loading parts 3, a main shaft part 4, a splash system 5, an electric control system 6, a computer monitoring system 7 and a protective cover 8; wherein the main shaft component 4, the splash system 5 and the protective cover 8 are fixed on the frame 1; the test head part 2 is arranged on the main shaft part 4, and the two sets of loading parts 3 are symmetrically fixed on the main shaft part 4; the loading part 3 is positioned above the test bearing 13 and loads the test bearing 13 with radial load; the splashing system 5 is positioned in front of the test bearing 13 and splashes liquid from different directions to the test bearing 13; the electric control system 6 is arranged in the frame 1 and controls the operation of the testing machine; the computer monitoring system 7 is connected with the electrical control system 6 and is arranged on the right side of the testing machine.
Referring to fig. 4, the test head part 2 of the present embodiment includes a test mandrel 11, a spacer 12, and a fixing sleeve 14; the test mandrel 11 is mounted on the spindle unit 4, and the spacer 12, the test bearing 13 and the fixing sleeve 14 are sequentially mounted on the test mandrel 11, and the fixing sleeve 14 is fixed on the test mandrel 11 by screws.
Referring to fig. 5, the loading unit 3 of the present embodiment includes an anti-rotation screw 15, a connection screw 16, two bearing clamping blocks 17, a bearing block 18, a knuckle bearing housing 19, a force sensor 20, an anti-rotation plate 21, a loading spring 22, a spring housing 23, a thrust ball bearing 24, a pull rod 25, a hand wheel 26, a loading seat 27 and a knuckle bearing 28; the loading seat 27 is arranged on the main shaft component 4, the anti-rotation plate 21 is arranged on the loading seat 27, the pull rod 25 penetrates through the loading seat 27 and is arranged on the loading seat 27 through the anti-rotation screw 15, the lower end of the pull rod 25 is connected with one end of the force sensor 20, the other end of the force sensor 20 is connected with the joint bearing 28, the joint bearing 28 is connected with the joint bearing sleeve 19 through the connecting screw 16, the joint bearing sleeve 19 is fixed on the bearing seat 18, two bearing clamping blocks 17 are arranged on the bearing seat 18, the test bearing 13 is fixed on the two bearing clamping blocks 17, and the upper end of the pull rod 25 is sequentially provided with the loading spring 22, the spring sleeve 23, the thrust ball bearing 24 and the hand wheel 26.
Referring to fig. 6, the spindle unit 4 of the present embodiment includes two skeleton oil seals 29, two circlips 30 for shafts, a wave-shaped elastic washer 31, two sets of support bearings 32, a spindle 33, two synchronous pulleys 34, a flat key 35, a spindle housing 36, two O-rings 37, and two end caps 38; the main motor 9 is arranged on the frame 1, one synchronous pulley 34 is arranged on the main motor 9, the other synchronous pulley 34 is fixed at the middle position of the main shaft 33 through a flat key 35, the two synchronous pulleys 34 are connected through a synchronous belt 10, two ends of the main shaft 33 are symmetrically and sequentially arranged on a supporting bearing 32 and a shaft elastic retainer ring 30 and then are arranged on a main shaft shell 36, the two shaft elastic retainer rings 30 are used for fixing the positions of the two supporting bearings 32, a wave-shaped elastic washer 31 is arranged at one end of the main shaft shell 36, a framework oil seal 29 and an O-shaped sealing ring 37 are arranged on an end cover 38, and the two end covers 38 are symmetrically fixed on the main shaft shell 36.
Referring to fig. 7 and 8, the splashing system 5 of the present embodiment includes a diagonal spout ram 39, a star nut 40, a spout holder 41, a screw lock sleeve 42, a diagonal spout 43, a straight spout 45, a quick connector 44, a screw 46, a diagonal spout fixing sleeve 47, a diagonal spout lock sleeve 48, a T-shaped chassis 49, casters 50, a mud tank 51, a direct spout submersible pump 52, a diagonal spout submersible pump 53, a hanging rod 54, and a ball valve 55; the T-shaped underframe 49 is fixed on the frame 1, the screw 46 is arranged on the T-shaped underframe 49 and is fixed by the star nut 40; the screw locking sleeve 42 is arranged in the spray pipe clamping body 41 and then is arranged on the screw 46, and is fixed by the star nut 40; the inclined spray pipe ram 39 is arranged at the upper end of the spray pipe clamping body 41, the inclined spray pipe locking sleeve 48 is arranged on the inclined spray pipe ram 39, the inclined spray pipe fixing sleeve 47 is fixed by the star nut 40 after being arranged in the inclined spray pipe locking sleeve 48, and the inclined spray pipe 43 is arranged on the inclined spray pipe fixing sleeve 47; the straight spray pipe 45 is arranged at the lower end of the spray pipe clamping body 41; the truckle 50 is fixed on the lower bottom surface of mud water tank body 51, and direct injection immersible pump 52 and oblique injection immersible pump 53 hang in mud water tank body 51 with peg 54, and direct injection immersible pump 52 and oblique injection immersible pump 53 link to each other with direct spray tube 44 and oblique spray tube 43 respectively through the pipeline, install ball valve 55 on the pipeline. The mud water tank body 51 is made of stainless steel plates, and 2 small corrosion-resistant stainless steel submersible pumps are adopted, so that the mud water tank body can be used for splash tests of various media such as mud, salt water, oil or other media (such as tap water or acid/alkaline liquid) and the like, and has strong applicability.
The working process of the testing machine is as follows:
(1) Firstly, the test mandrel 11 is installed on the transmission main shaft 33, the loading part 3 is adjusted to be in a free movement state, then the test bearing 13 is installed in the test mandrel 11 and fixed on the bearing seat 18 or the bearing clamping block 17, and finally, the hand wheel 26 is rotated to compress the loading spring 22 to load the required load and lock the hand wheel 26.
(2) The straight spray pipe 45 and the inclined spray pipe 43 are adjusted to proper positions, the water pump is started, and the water inlet ball valve 55 on the mud water tank body 51 is adjusted to enable the spray pipe to spray proper water quantity.
(3) And setting test time of each test section on a computer, starting the driving motor 9, and driving the test bearing 13 to rotate through the synchronous belt 10.
Referring to fig. 9, the computer monitoring system 7 reads the signals collected by the force sensor 20 and the frequency value of the variable frequency VD, and displays the load force, the rotating speed and the accumulated test time of the test bearing 13. Meanwhile, the computer monitoring system 7 can control the real-time rotating speed of the test bearing 13 and set a plurality of test time periods through the communication module, and control specific test conditions in each test time period, so that the applicability is strong. The computer monitoring system 7 can set a plurality of time periods according to different test objects and different test requirements, and the rotating speed, the stopping time, the direct injection time and the oblique injection time of each period can be set in a segmented and concrete mode.
The invention can simultaneously meet the splash resistance test of different types of outer spherical ball bearings with or without seats, and can be simultaneously used for the splash resistance test of UC series outer spherical ball bearings, UCP series outer spherical ball bearings with casting vertical seats, UCF series outer spherical ball bearings with casting square seats, UCFL series outer spherical ball bearings with casting diamond seats, UCFC series outer spherical ball bearings with casting boss round seats and ST740 series outer spherical ball bearings with stamping square seats. The UCP series external spherical ball bearing with the casting vertical seat is fixed by a screw through a T-shaped groove on the bearing seat 18, the UCFL series external spherical ball bearing with the casting diamond seat, the UCFC series external spherical ball bearing with the casting boss and the ST740 series external spherical ball bearing with the stamping square seat are fixed by screws through long grooves on the two bearing clamping blocks 17.
UCP series bearing loading installation is shown in figure 10, a test mandrel is arranged on a transmission main shaft, the test bearing is fixed on a bearing seat, the anti-rotation plate prevents the bearing from twisting, and the hand wheel is rotated to compress the spring to load the required load and lock the hand wheel.
UCF series bearing loading installation is shown in figure 11, a test mandrel is arranged on a transmission main shaft, the test bearing is fixed on a bearing clamping block, a hand wheel is rotated to compress a spring to load the required load and lock the hand wheel, and UCFL series, UCFC series and ST740 series bearings are used for installation.
The UC series bearing loading installation is shown in figure 12, the test mandrel is arranged on the transmission main shaft, the test bearing is fixed on the bearing clamping block, and the hand wheel is rotated to compress the spring to load the required load and lock the hand wheel.
The testing machine is simple to operate, convenient and effective, the testing environment meets the specific use environment of the external spherical bearing, and the testing machine can be used for checking the capability of the external spherical bearing with or without the seat for resisting the invasion of mud, salt water, oil or other mediums (such as tap water or acid/alkaline liquid). The computer displays the load, the rotating speed and the accumulated test time of the test bearing, is visual and clear, can set a plurality of time periods by itself, can set the rotating speed of each period and the time length of idling, direct injection, idling, oblique injection and stopping, has strong practicability, can automatically stop according to the set test time, and saves manpower. The test result meets the condition of the outer spherical bearing in actual use, and can greatly shorten the test period and save the test cost.