Roller bearing, load detection equipment and load detection method of roller bearing

Abstract

The invention provides a roller bearing, load detection equipment and a load detection method of the roller bearing, and relates to the field of bearings. The roller bearing comprises an outer ring, an inner ring and a roller body, fixing rings are clamped in mounting grooves, sealing rings are arranged on the mounting grooves and arranged in the fixing rings, the fixing rings are connected with dust covers, the dust covers are arranged on the two sides of the inner ring and the two sides of the outer ring, inner skirt edges and outer skirt edges are arranged on the inner sides of the dust covers, and the inner skirt edges and the outer skirt edges are connected with the roller body. Clamping edges with trapezoidal sections are arranged on the outer sides of the inner rings, the inner skirt edge and the outer skirt edge are attached to the two sides of the clamping edges respectively, groove positions are formed in the side portions of the dustproof cover, and springs are arranged in the groove positions. The outer ring is provided with the mounting groove used for mounting the fixing ring, the dustproof cover, the inner skirt edge and the outer skirt edge are arranged on the inner side of the fixing ring, the inner skirt edge and the outer skirt edge are meshed with the clamping edge, and meanwhile the spring extrudes the inner skirt edge and the outer skirt edge, so that the inner ring and the outer ring can be sealed when rotating relatively.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bearings, in particular to a roller bearing, a load detection device and a load detection method of the roller bearing. BACKGROUND

[0002] Most roller bearings are used on large equipment in the factory workshop, the equipment runs with large noise and vibration in the factory, the environment is not very clean, and dust or debris is floating in the air, which may float into the roller bearing and accelerate the wear of the roller bearing.

[0003] The roller bearing is generally used on equipment with large bearing capacity, and has large volume, heavy weight and low rotating speed, and needs to bear large radial load and axial load. Therefore, the measurement accuracy of the roller bearing is much lower than that of the 6202 or 6203 bearing. In the load detection process of the roller bearing, most of the existing mechanical equipment adopts the pressurizing method to detect the axial load of the roller bearing. This load measurement method can only roughly determine the axial load of the roller bearing, and has low accuracy and cannot achieve precise measurement, so the defective rate of the bearing is high. SUMMARY

[0004] In view of the defects of the prior art, the present application provides a roller bearing, a load detection device and a load detection method of the roller bearing, which solves the problems of dust entering the roller bearing and low axial load measurement accuracy.

[0005] To achieve the above object, the present application is realized by the following technical scheme: a roller bearing, comprising an outer ring, an inner ring and a roller body, the inner ring is arranged inside the outer ring, the roller body is arranged between the inner ring and the outer ring through a retainer, the outer ring is provided with hole one and hole two, the hole one and the hole two are symmetrically arranged, the outer ring is provided with a mounting groove on both sides, the mounting groove is clamped with a fixed ring, the mounting groove is provided with a sealing ring and the sealing ring is arranged in the fixed ring, the fixed ring is connected with a dust cover, the dust cover is arranged on both sides of the inner ring and the outer ring, the inner side of the dust cover is provided with an inner skirt and an outer skirt, the outer side of the inner ring is provided with a clamping edge with a trapezoidal cross section, the inner skirt and the outer skirt are respectively attached to both sides of the clamping edge, the side of the dust cover is provided with a groove, and the groove is provided with a spring.

[0006] Preferably, a load detection device of a roller bearing, the roller bearing is the bearing described in claim 1, the load detection device is used for load detection of the roller bearing described in claim 1, characterized by comprising a base and a sealing cover, the sealing cover is clamped and sleeved on the mounting groove of the outer ring, a ring-shaped rubber ring is arranged on the inner side of the sealing cover, the inner edge of the rubber ring is attached to the top surface of the clamping edge, the base is symmetrically provided with a mounting seat, a hydraulic cylinder and a positioning piece are respectively arranged on the opposite sides of the two mounting seats, the roller bearing is arranged between the hydraulic cylinder and the positioning piece, a fixing groove is arranged on the side of the positioning piece facing the hydraulic cylinder, a plurality of distance sensors are arranged in the fixing groove, the distance sensors are circumferentially distributed and face the side of the outer ring, a step is arranged in the fixing groove and is fixed with the mounting groove of the outer ring.

[0007] Preferably, a plurality of air cylinders are arranged on the fixing groove, a fixed plate is fixed on the driving end of each air cylinder, and the fixed plates are extruded on the outer side of the outer ring through the positioning piece.

[0008] Preferably, the driving end of the hydraulic cylinder is connected with a base through a plurality of pressure sensors, a plurality of clamping pieces are radially and circumferentially slidably connected to the base, a supporting arm is hingedly connected to the inner side of each clamping piece, and the sides close to each other of the supporting arms are hingedly connected to the driving end of an electric telescopic rod, the electric telescopic rod is fixed to the end portion of the base, the clamping pieces are used for clamping the inner ring, and the end portion of the base abuts against the side of the inner ring away from the positioning piece.

[0009] Preferably, a gas pump is arranged on one of the mounting seats, the gas pump is connected with a plug one through a first bellows, the plug one and a hole one are mutually inserted, an air outlet bin is arranged on the base, an impeller is rotatably arranged in the air outlet bin, a rotating shaft is arranged in the middle of the impeller, a Hall sensor is connected to one end of the rotating shaft, the Hall sensor is mounted on the outside of the air outlet bin, the air outlet bin is communicated with a second bellows, the second bellows is connected with a plug two, the plug two and a hole two are mutually inserted, the second bellows is arranged at the blade of the impeller, and an air outlet hole is arranged on the air outlet bin.

[0010] Preferably, a load detection method of a roller bearing comprises the following steps: Step one, tool assembly: remove the dust cover on both sides of the roller bearing, clamp the sealing cover on the mounting groove on the outer side of the outer ring, at this time, the inner edge of the rubber ring is opposite to the top of the clamping edge, then put the roller bearing into the fixing groove, the air cylinder fixes the roller bearing on the positioning piece through the fixed plate, the air cylinder moves the base to be attached to the side of the inner ring away from the positioning piece, at this time, the electric telescopic rod is retracted to make the supporting arm drive the clamping piece to extrude on the inner wall of the inner ring, fix the inner ring, and the tool assembly is completed. Step two, equipment inspection: by two joints to make the plug one and plug two connected with each other, the air pump provides constant air flow to the air outlet through the first corrugated pipe and the second corrugated pipe, and the maximum rotating speed of the impeller is measured by the Hall sensor; Step three, bearing axial load detection: the hydraulic cylinder provides the maximum pressure that the bearing design can withstand, so that the inner ring and the outer ring are dislocated in the axial direction, and at the same time, the air pump is started, the air pump makes hole one enter the same constant air flow as in step two through the first corrugated pipe and plug one, the roller bearing is filled with gas, the gas enters hole two through the roller bearing and then enters the air outlet through plug two and the second corrugated pipe in turn, the gas pushes the impeller, the impeller rotates through the rotating shaft, and the rotating speed of the rotating shaft is measured by the Hall sensor; Step three, bearing identification: a. If the axial load of the roller bearing is weaker than the design or the inner ring and the outer ring are not assembled well, the rubber ring and the clamping edge will be dislocated, the gas will flow out of the dislocation gap, the air entering the air outlet will be less, and the rotating speed of the impeller sensed by the Hall sensor will be much smaller than the rotating speed of the impeller in step two, which proves that the quality of the bearing axial load is poor; b. If the rotating speed measured by the Hall sensor is infinitely close to the rotating speed of the impeller in step two, it proves that the quality of the bearing axial load is good.

[0011] The present application provides a kind of roller bearing and load detection equipment and the load detection method of roller bearing.There are the following beneficial effects: The outer ring of the present application is provided with a mounting groove for mounting the fixing ring, the inner side of the fixing ring is provided with a dust cover and an inner skirt and an outer skirt which are engaged with the clamping edge, and at the same time, the spring extrudes the inner skirt and the outer skirt, so that the inner ring and the outer ring can be sealed when rotating relative to each other, dust or particles are not easy to enter the bearing frame and the roller body, ensuring the good operation of the bearing, so that it can operate in a clean environment for a long time, ensuring its long service life.

[0012] The present application provides a kind of roller bearing and load detection equipment and the load detection method of roller bearing.There are the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A cross-sectional view of a roller bearing of the present application; Figure 2 A cross-sectional view of a roller bearing of the present application; Figure 1 An enlarged view of A in FIG. 4; Figure 3 A plan view of a load detection device of a roller bearing of the present application; Figure 4 A top plan view of an air outlet chamber of a load detection device of a roller bearing of the present application; Figure 5 A perspective view of a positioning member of a load detection device of a roller bearing of the present application; Figure 6 A perspective view of a sealing cover of a load detection device of a roller bearing of the present application; Figure 7 A structural schematic view of a rubber ring and a snap-in edge of a load detection device of a roller bearing of the present application; Figure 8 A load detection device of a roller bearing of the present application Figure 3 An enlarged view of A in FIG. 8.

[0014] In the drawings: 1, inner ring; 2, outer ring; 3, hole one; 4, hole two; 5, roller body; 6, dust cover; 7, fixed ring; 8, mounting groove; 9, sealing ring; 10, slot; 11, spring; 12, outer skirt; 13, snap-in edge; 14, inner skirt; 15, sealing cover; 16, rubber ring; 17, base; 18, mounting seat; 19, hydraulic cylinder; 20, air pump; 21, first bellows; 22, plug one; 23, Hall sensor; 24, impeller; 25, air outlet chamber; 26, second bellows; 27, distance sensor; 28, air cylinder; 29, plug two; 30, clamping member; 31, support arm; 32, electric telescopic rod; 33, base; 34, pressure sensor; 35, rotating shaft; 36, fixed groove; 37, fixed plate; 38, positioning member. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0016] Embodiment one:

[0017] Reference Figures 1-8As shown, the embodiment of the present application provides a kind of roller bearing, including outer ring 2, inner ring 1 and roller body 5, inner ring 1 is arranged in the inside of outer ring 2, roller body 5 is arranged between inner ring 1 and outer ring 2 by retainer, outer ring 2 is provided with hole one 3 and hole two 4, hole one 3 and hole two 4 are symmetrically arranged, both outer sides of outer ring 2 are provided with installation groove 8, fixed ring 7 is clamped in installation groove 8, sealing ring 9 is arranged on installation groove 8 and sealing ring 9 is arranged in fixed ring 7, fixed ring 7 is connected with dust cover 6, dust cover 6 is arranged on both sides of inner ring 1 and outer ring 2, inner skirt 14 and outer skirt 12 are arranged on the inside of dust cover 6, the clamping edge 13 of trapezoidal section is arranged on the outside of inner ring 1, inner skirt 14 and outer skirt 12 are respectively attached on both sides of clamping edge 13, slot 10 is formed in the side of dust cover 6, spring 11 is arranged in slot 10, bearing outer ring 2 and equipment are fixed, installation groove 8 on outer ring 2 and equipment are mutually cooperated and fixed, extruding fixed ring 7 makes fixed ring 7 and sealing ring 9 realize bearing sealing, internal grease can also avoid its because rotating and flowing out, inner skirt 14 and outer skirt 12 of dust cover 6 and clamping part 13 are mutually engaged and attached, clamping part 13 and inner skirt 14 and outer skirt 12 relatively rotate when inner ring 1 rotates, realize the sealing in the process of bearing operation, spring 11 is circular spring and is used to pull dust cover 6, so that inner skirt 14 and outer skirt 12 always extrude and contact clamping edge 13.

[0018] Example two:

[0019] Referring to Figures 1-8 As shown, the embodiment of the present application provides a kind of load detection equipment of roller bearing, including base 17 and sealing cover 15, sealing cover 15 is clamped and is arranged on the installation groove 8 of outer ring 2, annular rubber ring 16 is arranged on the inside of sealing cover 15, the inner edge of rubber ring 16 is attached at the top surface of clamping edge 13, symmetrically arranged on base 17 there is mounting seat 18, two mounting seats 18 relative sides are respectively provided with hydraulic cylinder 19 and positioning member 38, roller bearing is arranged between hydraulic cylinder 19 and positioning member 38, the side of positioning member 38 towards hydraulic cylinder 19 is provided with fixed groove 36, multiple distance sensors 27 are arranged in fixed groove 36, distance sensors 27 are circumferentially distributed and opposite to the side of outer ring 2, fixed groove 36 is provided with step and is mutually clamped and fixed with the installation groove 8 of outer ring 2, hydraulic cylinder 19 drives bearing inner ring 1 displacement, positioning member 38 gives bearing outer ring 2 a fixed, realizes the mutual movement of inner ring 1 and outer ring 2 and realizes load release, carries out the determination of axial load to bearing.

[0020] Multiple air cylinders 28 are arranged on fixed groove 36, fixed plate 37 is fixed on the drive end of each air cylinder 28, fixed plate 37 is extruded on the outside of outer ring 2 and penetrates positioning member 38, air cylinder 28 adopts one air path system control, simultaneously drives fixed plate 37 to realize the fixation of bearing outer ring 2.

[0021] The driving end of the hydraulic cylinder 19 is connected with a base 33 through a plurality of pressure sensors 34, a plurality of clamping pieces 30 are radially and circumferentially slidably connected to the base 33, the inner side of each clamping piece 30 is hingedly connected with a supporting arm 31, the side close to the supporting arm 31 is hingedly connected to the driving end of an electric telescopic rod 32, the electric telescopic rod 32 is fixed to the end of the base 33, the clamping piece 30 is used for clamping the inner ring 1, the end of the base 33 abuts against the side of the inner ring 1 away from the positioning piece 38, the pressure sensor 34 can measure the driving force of the hydraulic cylinder 19, and the bearing axial load measurement is realized within the maximum design load of the bearing.

[0022] One of the mounting seats 18 is provided with an air pump 20, the air pump 20 is connected with a plug one 22 through a first corrugated pipe 21, the plug one 22 and the hole one 3 are mutually inserted, the base 17 is provided with an air outlet chamber 25, the air outlet chamber 25 is rotatably provided with an impeller 24, the middle of the impeller 24 is provided with a rotating shaft 35, one end of the rotating shaft 35 is connected with a Hall sensor 23, the Hall sensor 23 is installed outside the air outlet chamber 25, the air outlet chamber 25 is communicated with a second corrugated pipe 26, the second corrugated pipe 26 is connected with a plug two 29, the plug two 29 and the hole two 4 are mutually inserted, the second corrugated pipe 26 is arranged at the blade of the impeller 24, the air outlet chamber 25 is provided with an air outlet hole, forming a gas flow channel, realizing accurate bearing measurement, the rubber ring 16 will be displaced under the gas pressure, so the length of the contact part between the clamping edge 13 and the rubber ring, that is, the circumferential displacement distance of the bearing inner ring under a certain pressure plus the displacement distance of the rubber ring 16 under pressure, is the distance of the contact part between the clamping edge 13 and the rubber ring 16, in this way, the error of the deformation displacement of the rubber ring 16 under pressure can be accommodated, and accurate bearing error measurement can be realized, and bearings that exceed the design axial load error can be measured to be unqualified, and accurate measurement can be realized.

[0023] Embodiment three:

[0024] Referring to Figures 1-8 The load detection method of the present application is provided, which comprises the following steps: Step one, tool assembly: remove the dust cover 6 on both sides of the roller bearing, and set the sealing cover 15 on the mounting groove 8 on the outer side of the outer ring 2, at this time, the inner edge of the rubber ring 16 faces the top of the clamping edge 13, then put the roller bearing into the fixing groove 36, the air cylinder 28 fixes the roller bearing on the positioning piece 38 through the fixing plate 37, the air cylinder 19 moves the base 33 to abut against the side of the inner ring 1 away from the positioning piece 38, at this time, the electric telescopic rod 32 is retracted to make the supporting arm 31 drive the clamping piece 30 to press against the inner wall of the inner ring 1, thereby fixing the inner ring 1, and the tool assembly is completed; Step two, equipment check: connect plug one 22 and plug two 29 by two joints, air pump 20 provides constant air flow to air outlet 25 through first bellow 21 and second bellow 26, the maximum rotating speed of impeller 24 is measured by hall sensor 23; Step three, bearing axial load test: hydraulic cylinder 19 provides the maximum pressure that the bearing design can bear, which makes inner ring 1 and outer ring 2 dislocate in axial direction, and at the same time, air pump 20 is started, air pump 20 makes hole one 3 enter the same constant air flow as step two through first bellow 20 and plug one 22, the roller bearing is filled with gas, the gas enters hole two 4 through the roller bearing, and then enters air outlet 25 through plug two 29 and second bellow 26 in turn, the gas pushes impeller 24, impeller 24 rotates through rotating shaft 35, the rotating speed of rotating shaft 35 is measured by hall sensor 23, the pressure of gas in the closed space is the same, so if the gas leaks here, it will inevitably cause the rotating speed of impeller 24 to decrease; Step three, bearing identification: a. If the axial load of the roller bearing is weaker than the design or the assembly of inner ring 1 and outer ring 2 is poor, then rubber ring 16 and clamping edge 13 will dislocate, the gas flows out from the dislocation gap, the air entering air outlet 25 becomes less, the rotating speed of impeller 24 sensed by hall sensor 23 is much smaller than the rotating speed of impeller 24 in step two, which proves that the quality of the axial load of the bearing is poor; b. If the rotating speed measured by hall sensor 23 is infinitely close to the rotating speed of impeller 24 in step two, it proves that the quality of the axial load of the bearing is good.

[0025] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A roller bearing, comprising an outer ring (2), an inner ring (1), and roller bodies (5), characterized in that: The inner ring (1) is disposed inside the outer ring (2). The roller body (5) is disposed between the inner ring (1) and the outer ring (2) by means of a retainer. The outer ring (2) is provided with a hole 1 (3) and a hole 2 (4), which are symmetrically arranged. The outer ring (2) is provided with mounting grooves (8) on both outer sides. A fixing ring (7) is engaged in each mounting groove (8). A sealing ring (9) is provided on the mounting groove (8) and is disposed in the fixing ring (7). All rings (7) are connected to dust covers (6). The dust covers (6) are set on both sides of the inner ring (1) and the outer ring (2). The inner side of the dust cover (6) is provided with an inner skirt (14) and an outer skirt (12). The outer side of the inner ring (1) is provided with a trapezoidal snap-fit ​​edge (13). The inner skirt (14) and the outer skirt (12) are respectively attached to both sides of the snap-fit ​​edge (13). The side of the dust cover (6) is provided with a slot (10). A spring (11) is provided in the slot (10).

2. A load testing device for roller bearings, characterized in that: The roller bearing is the bearing described in claim 1, and the load testing device is used for load testing of the roller bearing described in claim 1. The device is characterized by comprising a base (17) and a sealing cover (15), the sealing cover (15) being fitted onto the mounting groove (8) of the outer ring (2), an annular rubber ring (16) being provided on the inner side of the sealing cover (15), the inner edge of the rubber ring (16) being attached to the top surface of the engaging edge (13), and mounting seats (18) being symmetrically arranged on the base (17). Hydraulic cylinders (19) and positioning components (38) are respectively installed on opposite sides of the mounting base (18). The roller bearing is located between the hydraulic cylinder (19) and the positioning component (38). The positioning component (38) has a fixing groove (36) on the side facing the hydraulic cylinder (19). Multiple distance sensors (27) are installed in the fixing groove (36). The distance sensors (27) are circumferentially distributed and face the outer ring (2) on one side. The fixing groove (36) has a step that engages and is fixed with the mounting groove (8) of the outer ring (2).

3. The load testing device for roller bearings according to claim 2, characterized in that: Multiple cylinders (28) are provided on the fixed groove (36). Each cylinder (28) has a fixed plate (37) fixed at its drive end. The fixed plate (37) passes through the positioning member (38) and is pressed against the outside of the outer ring (2).

4. The load testing device for roller bearings according to claim 2, characterized in that: The driving end of the hydraulic cylinder (19) is connected to a base (33) via multiple pressure sensors (34). Multiple clamps (30) are radially circumferentially slidably connected to the base (33). Each clamp (30) has a support arm (31) hinged to its inner side. The side of the support arm (31) that is close to each other is hinged to the driving end of the electric telescopic rod (32). The electric telescopic rod (32) is fixed to the end of the base (33). The clamps (30) are used to clamp the inner ring (1). The end of the base (33) abuts against the side of the inner ring (1) away from the positioning member (38).

5. The load testing device for roller bearings according to claim 2, characterized in that: One of the mounting bases (18) is equipped with an air pump (20), which is connected to a plug (22) via a first corrugated pipe (21). The plug (22) and the hole (3) are plugged into each other. An air outlet chamber (25) is provided on the base (17). An impeller (24) is rotatably arranged inside the air outlet chamber (25). A rotating shaft (35) is provided in the middle of the impeller (24). One end of the rotating shaft (35) is connected to a Hall sensor (23). The Hall sensor (23) is installed outside the air outlet chamber (25). The air outlet chamber (25) is connected to a second corrugated pipe (26). The second corrugated pipe (26) is connected to a plug (29). The plug (29) and the hole (4) are plugged into each other. The second corrugated pipe (26) is located at the blade of the impeller (24). An air outlet hole is provided on the air outlet chamber (25).

6. A method for load testing of a roller bearing, wherein the bearing used in the method is the roller bearing described in claim 1, and the equipment used in the method is the roller bearing load testing equipment described in any one of claims 2-5, characterized in that: Includes the following steps: Step 1, Tool Assembly: Remove the dust covers (6) on both sides of the roller bearing, and put the sealing cover (15) on the mounting groove (8) on the outside of the outer ring (2). At this time, the inner edge of the rubber ring (16) is directly opposite the top of the snap-fit ​​edge (13). Then, put the roller bearing into the fixing groove (36). The cylinder (28) fixes the roller bearing on the positioning part (38) through the fixing plate (37). The cylinder (19) moves the base (33) to the side of the inner ring (1) away from the positioning part (38). At this time, the electric telescopic rod (32) retracts, causing the support arm (31) to drive the clamp (30) to press against the inner wall of the inner ring (1) to fix the inner ring (1). The tool assembly is complete. Step 2, Equipment Inspection: Connect plug one (22) and plug two (29) to each other through the two connectors. The air pump (20) supplies a constant airflow to the air outlet chamber (25) through the first bellows (21) and the second bellows (26). The maximum speed of the impeller (24) is measured by the Hall sensor (23). Step 3, Axial load detection of bearing: The hydraulic cylinder (19) provides the maximum pressure that the bearing design performance can withstand, causing the inner ring (1) and outer ring (2) to be misaligned in the axial direction. At the same time, the air pump (20) is started. The air pump (20) uses the first bellows (20) and plug one (22) to bring the same constant airflow as in step 2 into hole one (3). The roller bearing is filled with gas. The gas enters hole two (4) through the roller bearing and then passes through plug two (29) and the second bellows (26) to enter the air outlet chamber (25). The gas drives the impeller (24). The impeller (24) rotates through the shaft (35). The rotation speed of the shaft (35) is measured by the Hall sensor (23). Step 3: Bearing Inspection a. If the axial load of the roller bearing is weaker than designed or the inner ring (1) and outer ring (2) are poorly assembled, the rubber ring (16) and the snap-fit ​​edge (13) will be misaligned. Gas will flow out from the misalignment gap, and less air will enter the air outlet chamber (25). The speed of the impeller (24) sensed by the Hall sensor (23) is much less than the speed of the impeller (24) in step two, which proves that the axial load quality of the bearing is poor. b. If the rotational speed measured by the Hall sensor (23) is infinitely close to the rotational speed of the impeller (24) in step two, it proves that the axial load quality of the bearing is good.

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