CN218271379U

CN218271379U - Bearing anti-fatigue testing device

Info

Publication number: CN218271379U
Application number: CN202222638462.9U
Authority: CN
Inventors: 吴望才; 秦翔; 章勋朝; 王光顺
Original assignee: Wuhu Jiaxian Drive Shaft Co ltd
Current assignee: Wuhu Jiaxian Drive Shaft Co ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2023-01-10
Anticipated expiration: 2032-10-08

Abstract

The utility model discloses a bearing fatigue resistance testing arrangement relates to bearing test technical field, comprises a workbench, the workstation is equipped with bears the support, bear and be equipped with driving motor along the activity of vertical direction on the support, driving motor's output shaft arranges downwards to fixed mounting has drive assembly on the output shaft, lies in the drive assembly below position on the workstation and is equipped with anchor clamps, be equipped with temperature measurement component on the workstation. The utility model discloses a setting of drive assembly and two fly leafs etc, drive assembly fixed mounting is on driving motor's output shaft, driving motor's rotation can drive assembly and rotate, support among the drive assembly and press the rotation that the support can drive two fly leafs and keep away from each other, and then after the bearing inner ring was arranged in to two fly leafs, the rotation that two fly leafs kept away from each other can be inboard with the bearing inner ring and support to press fixedly, also make relative fixed connection between drive assembly and the bearing inner ring that awaits measuring promptly.

Description

Bearing anti-fatigue testing device

Technical Field

The utility model relates to a bearing test technical field, concretely relates to bearing anti-fatigue test device.

Background

Patent document (No. CN 212321070U) discloses a fatigue testing machine of rod end joint bearing, when this testing machine used, through rotating first threaded rod and second threaded rod, make the slider drive clamping component and remove simultaneously and fix joint bearing, at this moment the pneumatic cylinder work, drive servo motor downstream through the fixed plate, make the guide bar of servo motor output insert in joint bearing's inner ring, then drive the guide bar rotation through servo motor and gearbox, thereby drive joint bearing's inner ring and rotate, like this under the certain circumstances of rotational speed, observe the temperature on joint bearing outer ring surface through the infrared thermometer, with this life who judges the bearing.

However, in the testing machine, the guide rod connected with the servo motor is inserted into the inner ring of the bearing, so that the guide rod and the inner ring are in a relatively fixed state, and then the guide rod drives the inner ring to rotate.

SUMMERY OF THE UTILITY MODEL

In order to overcome foretell technical problem, the utility model aims to provide a bearing fatigue resistance testing arrangement, through drive assembly's setting, it is fixed to utilize anchor clamps can carry out the centre gripping with the bearing outer ring that awaits measuring, then utilize drive assembly to fix the inner ring of bearing, under driving motor's drive action, the inner ring can rotate along with drive assembly, the installation is stable between inner ring and the drive assembly, relative slip can not take place, and then can be accurate test inner ring, test data is accurate.

The purpose of the utility model can be realized by the following technical scheme:

a bearing fatigue resistance testing device comprises a workbench, wherein the workbench is provided with a bearing support, a driving motor is movably arranged on the bearing support along the vertical direction, an output shaft of the driving motor is arranged downwards, a transmission assembly is fixedly arranged on the output shaft, a clamp is arranged on the workbench below the transmission assembly, and a temperature measuring assembly is arranged on the workbench;

the transmission assembly comprises a connecting rod and a pressing support, the connecting rod is vertically arranged, the top of the connecting rod is fixedly connected with an output shaft of the driving motor, two movable plates which are arranged in an inverted splayed shape are hinged to the bottom of the connecting rod, the pressing support is vertically and slidably mounted on the connecting rod, and the pressing support is used for driving the two movable plates to be away from each other.

As a further aspect of the present invention: the transmission assembly further comprises a one-way threaded rod, a through hole is formed in the connecting rod and is vertically arranged, the bottom end of the one-way threaded rod is rotatably installed on the inner wall of the bottom of the through hole, and the bearing support is located on the through hole and is sleeved on the one-way threaded rod in a threaded mode.

As a further aspect of the present invention: the two sides of the bottom of the connecting rod are fixedly provided with fixed blocks, the two movable plates are respectively hinged on the two fixed blocks, the bearing support is provided with two pressing parts which are vertically and downwards arranged, the two pressing parts respectively penetrate through the two fixed blocks, and the two pressing parts respectively press against the inner sides of the two movable plates.

As a further aspect of the present invention: the reset assembly comprises two springs, the two springs are arranged in one-to-one correspondence with the two movable plates respectively, one end of each spring is fixedly mounted on the fixed block, and the other end of each spring is fixedly mounted on the movable plate.

As a further aspect of the present invention: the connecting rod is provided with vertically arranged operation holes, and the operation holes are communicated with the through holes. The staff can drive one-way threaded rod through the handle hole and rotate convenient to use.

As a further aspect of the present invention: the anchor clamps include two-way threaded rod and two splint, two-way threaded rod horizontal arrangement to two-way threaded rod rotates and installs on the workstation, has seted up two spouts on the workstation, two spout line directions are parallel with two-way threaded rod length direction, two splint slidable mounting respectively are on two spouts, and two splint bottom equal screw thread are installed on two-way threaded rod, two-way threaded rod has two screw thread sections opposite in thread direction, two splint are threaded sleeve respectively and are established on two screw thread sections, under the spacing of spout, two splint rotation of two-way threaded rod can drive the removal that two splint kept away from each other or were close to.

As a further aspect of the present invention: the temperature measuring assembly comprises two mounting blocks and two infrared thermometers, the two mounting blocks are fixedly mounted on the workbench, the connecting direction of the two mounting blocks is perpendicular to the connecting direction of the two clamping plates, and the two infrared thermometers are respectively mounted on one sides, close to each other, of the two mounting blocks.

As a further aspect of the present invention: the bearing support is fixedly provided with a hydraulic cylinder, and the driving motor is fixedly arranged on a piston rod of the hydraulic cylinder. The hydraulic cylinder can be used for driving the driving motor to move in the vertical direction.

The utility model has the advantages that: through the setting of transmission assembly and two fly leafs etc, transmission assembly fixed mounting is on driving motor's output shaft, driving motor's rotation can drive transmission assembly and rotate, support in the transmission assembly and press the rotation that the support can drive two fly leafs and keep away from each other, and then after bearing inner ring was arranged in to two fly leafs, the rotation that two fly leafs kept away from each other can support with the bearing inner ring inboard and press fixedly, also make relative fixed connection between transmission assembly and the bearing inner ring that awaits measuring, and then transmission assembly can be accurate with driving motor's rotational speed transmission for bearing inner ring, the relative bearing outer ring rotation of bearing inner ring tests, test data is accurate.

Drawings

The present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a front view of the driving assembly and the reset assembly of the present invention;

FIG. 3 is a schematic view of the overall structure of the transmission assembly and the reset assembly of the present invention;

fig. 4 is the overall structure schematic diagram of the temperature measuring component and the workbench of the present invention.

In the figure: 1. a work table; 2. a load bearing support; 3. a drive motor; 4. a transmission assembly; 41. a connecting rod; 42. pressing the bracket; 5. a temperature measuring component; 51. mounting blocks; 52. an infrared thermometer; 6. a movable plate; 7. a one-way threaded rod; 8. a through hole; 9. a fixed block; 10. a pressing part; 11. a spring; 12. an operation hole; 13. a bidirectional threaded rod; 14. a splint; 15. a chute; 16. and a hydraulic cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-4, a bearing fatigue resistance testing device comprises a workbench 1, a bearing support 2 is fixedly arranged on the workbench 1, and a clamp is arranged below the bearing support 2 and used for clamping and fixing an outer ring of a bearing to be tested; one side of the clamp is provided with a temperature measuring component 5, the temperature measuring component 5 is used for measuring the temperature of the outer ring of the bearing in the testing process, and the quality of the bearing is judged according to the temperature. A hydraulic cylinder 16 is fixedly mounted on the bearing support 2, the hydraulic cylinder 16 is vertically arranged, a piston rod of the hydraulic cylinder 16 is arranged downwards, a driving motor 3 is fixedly connected to the piston rod of the hydraulic cylinder 16, and a transmission assembly 4 is fixedly connected to an output shaft of the driving motor 3; when the bearing needs to be tested, the bearing can be placed on the clamp, the outer ring of the bearing can be clamped and fixed by the clamp, then the hydraulic cylinder 16 is used for driving the driving motor 3 to move downwards, the driving motor 3 can drive the transmission component 4 to move downwards until the transmission component 4 contacts with the inner ring of the bearing, then the transmission component 4 and the inner ring of the bearing are relatively fixed, then the driving motor 3 can be started, the driving motor 3 can drive the transmission component 4 to rotate, under the relative fixing effect of the transmission component 4 on the inner ring of the bearing, the inner ring of the bearing can also rotate, and then the rotating speed of the driving motor 3 can be accurately transmitted to the inner ring of the bearing through the transmission component 4, so that the test data is accurate.

As shown in fig. 2 to fig. 3, the transmission assembly 4 includes a connecting rod 41, the connecting rod 41 is fixedly mounted on an output shaft of the driving motor 3, meanwhile, a through hole 8 is formed in the connecting rod 41 along a vertical direction, a supporting bracket 42 is vertically mounted on the through hole 8, and a one-way threaded rod 7 is rotatably mounted in the through hole 8, the supporting bracket 42 is threadedly sleeved on the one-way threaded rod 7, and further, under the limit of the through hole 8 on the supporting bracket 42, the rotation of the one-way threaded rod 7 can drive the supporting bracket 42 thereon to move upward or downward; two fixed blocks 9 are arranged at the bottom of the connecting rod 41, the bottom parts of the two fixed blocks 9 are hinged with movable plates 6, and the two movable plates 6 are arranged in an inverted splayed shape.

For the arrangement of the two movable plates 6 in this state, two springs 11 may be provided, the two springs 11 are respectively arranged in one-to-one correspondence with the two movable plates 6, and one end of each spring 11 is fixedly mounted on the fixed block 9, and the other end is fixedly mounted on the movable plate 6, and under the elastic action of the spring 11, the two movable plates 6 may be arranged in an inverted splayed shape; for the setting of the pressing support 42, two pressing portions 10 arranged vertically and downwardly are arranged on the pressing support 42, the two pressing portions 10 respectively penetrate through the two fixing blocks 9 to press against the inner sides of the two movable plates 6, and when the one-way threaded rod 7 rotates to drive the pressing support 42 to move downwardly, the two pressing portions 10 move downwardly and push the two movable plates 6 to move away from each other. When the transmission assembly 4 is relatively fixed to the bearing inner ring, the bottom ends of the two movable plates 6 in the transmission assembly 4 can be inserted into the bearing inner ring, then the one-way threaded rod 7 is rotated to drive the abutting support 42 to move downwards, so that the bottom ends of the two movable plates 6 can be away from each other in the bearing inner ring, the two movable plates 6 can be respectively abutted against the inner side of the bearing inner ring, that is, the two movable plates 6 and the bearing inner ring are relatively fixed, and the rotation of the transmission assembly 4 can accurately drive the bearing inner ring to rotate.

With the two springs 11, the two movable plates 6 can be arranged in an inverted splayed shape, and the two movable plates 6 can be driven to reset. The method specifically comprises the following steps: in the process that the two pressing parts 10 of the pressing bracket 42 move downwards, the pressing parts 10 press the inner sides of the movable plates 6 to drive the two movable plates 6 to move away from each other, and the spring 11 is stretched; during the upward movement of the two pressing portions 10 of the pressing bracket 42, the pressing portions 10 will release the pressing action on the inner sides of the movable plates 6, and the two movable plates 6 will move close to each other under the restoring force of the springs 11 until the initial state is restored.

As shown in fig. 2 to fig. 3, in order to better drive the rotation of the one-way threaded rod 7, the connecting rod 41 is provided with an operation hole 12 which is vertically arranged, the operation hole 12 is communicated with the through hole 8, and through the operation hole 12, a worker can drive the one-way threaded rod 7 to rotate by using a tool, so that the use is convenient.

As shown in fig. 1 and 4, for the above middle clamp, the clamp includes a bidirectional threaded rod 13, the bidirectional threaded rod 13 is horizontally installed on the workbench 1, a handle is further fixedly installed at the right end of the bidirectional threaded rod 13, two sliding grooves 15 are formed in the workbench 1, the connecting line direction of the two sliding grooves 15 is parallel to the length direction of the bidirectional threaded rod 13, two clamping plates 14 are respectively and slidably installed on the two sliding grooves 15, the bottom threads of the two clamping plates 14 are sleeved on the bidirectional threaded rod 13, the bidirectional threaded rod 13 has two threaded sections with opposite thread directions, the two clamping plates 14 are respectively and threadedly sleeved on the two threaded sections, a clamping area with adjustable size is formed between the two clamping plates 14, when the bearing is placed in the clamping area, the handle can be rotated, under the limit of the sliding grooves 15, the rotation of the bidirectional threaded rod 13 can drive the two clamping plates 14 to move close to each other, so as to clamp and fix the outer ring of the bearing, and the rotation of the two movable plates 6 can drive the inner ring of the bearing to rotate, thereby facilitating subsequent testing.

As shown in fig. 1 and 4, the temperature measuring assembly 5 includes two mounting blocks 51 and two infrared thermometers 52, the two mounting blocks 51 are both fixedly mounted on the worktable 1, the connecting direction of the two mounting blocks 51 is perpendicular to the connecting direction of the two clamping plates 14, and the two infrared thermometers 52 are respectively mounted on the sides of the two mounting blocks 51 close to each other. After the two clamping plates 14 clamp and fix the left and right sides of the bearing outer ring, the two infrared thermometers 52 are arranged opposite to the other two sides, and thus when the transmission assembly 4 drives the bearing inner ring to rotate, the two infrared thermometers 52 can perform temperature measurement processing on the bearing outer ring.

The utility model discloses a theory of operation: when the bearing needs to be tested, as shown in fig. 1, the bearing can be placed in the clamping area, so that the bearing is located right below the transmission assembly 4, then the handle is rotated, the handle can drive the bidirectional threaded rod 13 to rotate, under the limit of the sliding groove 15 to the clamping plates 14, the rotation of the bidirectional threaded rod 13 can drive the two clamping plates 14 to move close to each other, and further the two clamping plates 14 can clamp and fix the outer ring of the bearing; then, the hydraulic cylinder 16 is used for moving the driving motor 3 downwards, the transmission assembly 4 also moves downwards along with the driving motor 3 until the bottom ends of the two movable plates 6 are inserted into the bearing inner ring, a worker can drive the one-way threaded rod 7 to rotate through the operation hole 12, the rotation of the one-way threaded rod 7 can drive the pressing support 42 to move downwards under the limit of the through hole 8 to the pressing support 42, then the two pressing portions 10 of the pressing support 42 respectively press the two movable plates 6 to rotate away from each other, the rotation of the two movable plates 6 can be pressed and fixed with the inner side of the bearing inner ring, that is, the transmission assembly 4 and the bearing inner ring are relatively fixed, relative sliding does not occur in the rotation process, then the driving motor 3 can work, the rotation of the output shaft of the driving motor 3 can drive the transmission assembly 4 and the bearing inner ring to rotate, further, the transmission assembly 4 can accurately transmit the rotation speed of the driving motor 3 to the bearing inner ring, in the rotation process of the bearing inner ring, the infrared thermometer 52 can measure the temperature of the bearing outer ring, the high temperature can be used for judging the performance of the fatigue test of the bearing, if the bearing is higher than the normal performance of the fatigue test, otherwise, the fatigue resistance of the bearing, the bearing outer ring is better.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A bearing fatigue resistance testing device comprises a workbench (1) and is characterized in that the workbench (1) is provided with a bearing support (2), a driving motor (3) is movably arranged on the bearing support (2) along the vertical direction, an output shaft of the driving motor (3) is arranged downwards, a transmission assembly (4) is fixedly mounted on the output shaft, a clamp is arranged on the workbench (1) below the transmission assembly (4), and a temperature measuring assembly (5) is arranged on the workbench (1);

the transmission assembly (4) comprises a connecting rod (41) and a pressing support (42), the connecting rod (41) is vertically arranged, the top of the connecting rod (41) is fixedly connected with an output shaft of the driving motor (3), two movable plates (6) which are arranged in an inverted splayed shape are hinged to the bottom of the connecting rod (41), the pressing support (42) is vertically and slidably mounted on the connecting rod (41), and the pressing support (42) is used for driving the two movable plates (6) to be away from each other.

2. The bearing fatigue resistance testing device according to claim 1, wherein the transmission assembly (4) further comprises a one-way threaded rod (7), the connecting rod (41) is provided with a through hole (8) which is vertically arranged, the one-way threaded rod (7) is vertically arranged, the bottom end of the one-way threaded rod is rotatably installed on the inner wall of the bottom of the through hole (8), and the bearing support (2) is positioned on the through hole (8) and is sleeved on the one-way threaded rod (7) in a threaded manner.

3. The bearing fatigue resistance testing device according to claim 2, wherein the two sides of the bottom of the connecting rod (41) are fixedly provided with fixed blocks (9), the two movable plates (6) are respectively hinged on the two fixed blocks (9), the bearing bracket (2) is provided with two vertically downward-arranged pressing parts (10), the two pressing parts (10) respectively penetrate through the two fixed blocks (9), and the two pressing parts (10) respectively press against the inner sides of the two movable plates (6).

4. The bearing fatigue resistance testing device according to claim 3, further comprising a reset assembly, wherein the reset assembly comprises two springs (11), the two springs (11) are respectively arranged corresponding to the two movable plates (6) one by one, and one end of each spring (11) is fixedly arranged on the fixed block (9) and the other end of each spring is fixedly arranged on the movable plate (6).

5. The bearing fatigue resistance testing device according to any one of claims 1 to 4, wherein the connecting rod (41) is provided with an operation hole (12) vertically arranged, and the operation hole (12) is communicated with the through hole (8).

6. The bearing fatigue resistance testing device according to claim 5, wherein the clamp comprises a bidirectional threaded rod (13) and two clamping plates (14), the bidirectional threaded rod (13) is horizontally arranged, the bidirectional threaded rod (13) is rotatably mounted on the workbench (1), two sliding grooves (15) are formed in the workbench (1), the connecting line direction of the two sliding grooves (15) is parallel to the length direction of the bidirectional threaded rod (13), the two clamping plates (14) are respectively slidably mounted on the two sliding grooves (15), and the bottoms of the two clamping plates (14) are both threadedly mounted on the bidirectional threaded rod (13).

7. The bearing fatigue resistance testing device according to claim 6, wherein the temperature measuring component (5) comprises two mounting blocks (51) and two infrared thermometers (52), the two mounting blocks (51) are both fixedly mounted on the workbench (1), the connecting direction of the two mounting blocks (51) is perpendicular to the connecting direction of the two clamping plates (14), and the two infrared thermometers (52) are respectively mounted on the sides of the two mounting blocks (51) close to each other.

8. A bearing fatigue resistance testing device according to claim 7, characterized in that a hydraulic cylinder (16) is fixedly mounted on the bearing bracket (2), and the driving motor (3) is fixedly mounted on a piston rod of the hydraulic cylinder (16).