Bearing start torque measuring apparatus

Abstract

The application provides a bearing starting torque measuring device, comprising an operation table, an adjusting frame, a mounting seat and a measuring assembly, the mounting seat comprises a locking part, the locking part is used for forming positioning cooperation between the inner ring of the bearing to be measured and the mounting seat, the adjusting frame comprises a vertically extending support rod and a horizontal rod perpendicular to the support rod, the horizontal rod can move circumferentially relative to the support rod, the measuring assembly comprises a load part, a flexible part and a connecting part, one end of the flexible part is positioned on the outer ring of the bearing to be measured through the connecting part, the other end of the flexible part is connected to the load part through the horizontal rod, and the load part is used for connecting a load block for applying tension to the flexible part. In view of the defects of the prior art, the application provides a bearing starting torque measuring device which can guarantee the measurement accuracy, the tooling and detection process are simpler, and the application range is wider.

Description

Technical Field

[0001] This invention relates to a bearing starting torque measuring device. Background Technology

[0002] Bearings are crucial components used for rotating support in mechanical bodies. A bearing typically consists of an outer ring, an inner ring, and several rollers. Both the outer and inner rings have grooves on their opposing walls, forming raceways between the two grooves for the rollers to roll. During the manufacturing process, bearings often require various tests, such as axial clearance, radial clearance, and starting torque, to ensure that all bearing values ​​are within reasonable ranges. Regarding starting torque, various methods exist for measuring it. However, to ensure measurement accuracy, it is necessary to simplify the measuring tooling and testing range, reduce measurement costs, and cover a wide range of bearing models. Therefore, certain improvements are required. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a bearing starting torque measuring device that ensures measurement accuracy while simplifying tooling and testing processes and expanding its application range.

[0004] To achieve the above objectives, the present invention provides a bearing starting torque measuring device, comprising an operating table, an adjusting frame, a mounting base, and a measuring component. The mounting base includes a locking element for positioning the inner ring of the bearing to be tested and the mounting base. The adjusting frame includes a vertically extending support rod and a crossbar perpendicular to the support rod, the crossbar being capable of circumferential movement relative to the support rod. The measuring component includes a load section, a flexible component, and a connecting component. One end of the flexible component is positioned on the outer ring of the bearing to be tested via the connecting component, and the other end of the flexible component is connected to the load section above the crossbar. The load section is used to connect a load block that applies tension to the flexible component.

[0005] The advantages of the above technical solution are as follows: By setting an adjustment frame, a mounting base, and a measuring component on the operating table, the locking component can form a positioning fit between the inner ring of the bearing under test and the mounting base. The adjustment frame is equipped with a horizontally extending crossbar that can move circumferentially relative to the support rod. The final measuring component is equipped with a load part, a flexible component, and a connecting component. In use, the locking component first positions the inner ring of the bearing under test and the mounting base, and then the crossbar of the adjustment frame is rotated and adjusted to a certain interval from the bearing measuring tool. Then, the connecting component is positioned on the side of the outer ring of the bearing under test facing away from the crossbar, and the other end of the flexible component passes over the crossbar, with the load part on it connected to a load block. The load block pulls the flexible component, and the connecting component on the flexible component drives the outer ring of the bearing under test. During the process, the load block is adjusted from light to heavy until the outer ring of the bearing under test rotates, thereby obtaining the weight of the load block required to start the bearing under test. Then, the starting torque of the bearing under test can be measured by a formula. The overall tooling and its testing process are relatively simple and have a wide range of applications.

[0006] The present invention can be further configured such that: the measuring component includes a weight adjustment plate, the weight adjustment plate includes a vertical channel, a plurality of load blocks and a plurality of partitions, the plurality of partitions are circumferentially distributed on the weight adjustment plate and extend radially, and the plurality of partitions can form a separation between the plurality of load blocks and can drive the load blocks to move circumferentially with them, the vertical channel extends vertically and allows the load part to extend into it, and the vertical channel allows the load block to move downward under its own gravity, the load part is composed of magnetic blocks.

[0007] By further configuring the measuring assembly, a weight adjustment disk is incorporated, which contains a vertical channel, several load blocks, and several partitions. The partitions are circumferentially distributed on the weight adjustment disk and extend radially, thus separating the load blocks and enabling them to move circumferentially. A vertical channel is also provided, allowing the load portion, composed of magnetic blocks, to extend into the channel and for the load blocks to move downwards under their own weight. In use, the load blocks are arranged in a specific order. The partitions then guide the separated individual load blocks into the vertical channel, where the load portion attracts them. If the corresponding load block cannot move the outer ring of the bearing under test, the partition continues to move, removing the load block and allowing the next partition to move the next load block into the vertical channel. This process repeats until the corresponding load block moves the outer ring of the bearing under test, thereby measuring the starting torque of the bearing under test.

[0008] The present invention can be further configured such that: the adjusting plate includes a first plate portion and a second plate portion, the first plate portion and the second plate portion are rotatably connected, the first plate portion is provided with an outer retaining ring and an inner retaining ring, the vertical channel has notches formed on both the outer retaining ring and the inner retaining ring, and the partition is provided on the second plate portion and corresponds to the space between the outer retaining ring and the inner retaining ring.

[0009] By further designing the weight adjustment disc into a rotating connection between a first disc section and a second disc section, an outer retaining ring and an inner retaining ring are provided on the first disc section, and the vertical channel has notches on both the outer and inner retaining rings. Under normal circumstances, the load blocks separated by the partition are limited by the outer and inner retaining rings. Only when rotated to the vertical channel can the load section entering the vertical channel through the notch of the outer retaining ring cooperate with the load block, and the load block also has room to fall.

[0010] The present invention can be further configured such that: the first disc portion is provided with an elastic protrusion on the movement path of the partition.

[0011] By further designing the first disc, an elastic protrusion is provided on the movement path of the partition. During the operation of the second disc, the second disc can generate feedback after moving the distance between the two partitions, which facilitates measurement.

[0012] The present invention can be further configured such that: the connector is in the shape of a claw, and the connector is provided with two arc-shaped claws, the two claws are symmetrical and can be opened and closed, and the inner side of the claws is provided with several elastic abutment parts.

[0013] By further refining the design, the connector is configured as a claw with an arc-shaped claw portion. By opening and closing the two claw portions, the outer ring of the bearing under test is clamped, thereby positioning the connector and the outer ring of the bearing under test. This design is convenient to operate and can accommodate bearings of different sizes. Furthermore, an elastic abutment portion is provided on the inner side of the claw portion, which can better clamp bearings of different sizes through its elastic deformation.

[0014] The present invention can be further configured such that: a limiting rod is provided on the adjusting frame, the limiting rod is telescopically oriented, one end of the limiting rod is provided with an abutting rough surface, and the limiting rod can be telescopically extended until the abutting rough surface at one end abuts against the outer ring of the bearing to be tested.

[0015] By further configuring the adjustment frame, a telescopic limit rod is installed, and a rough abutting surface is provided at the end of the limit rod that abuts against the outer ring of the bearing under test. By extending or retracting the limit rod, the rough abutting surface can be used to limit the contact between the limit rod and the outer ring of the bearing under test. For example, during the adjustment of the load block, some shaking or other effects are unavoidable. In this case, the rough abutting surface can be placed against the outer ring of the bearing under test to form a limit and avoid interfering with the accuracy of the measurement results.

[0016] The present invention can be further configured such that: the adjusting frame includes an extension arm, one end of the extension arm is sleeved on the support rod, and one end of the extension arm is provided with an extension portion and a lifting portion that are both annular, the upper parts of the extension portion and the lifting portion are provided with opposing grooves, a plurality of balls are provided between the two grooves, and the lower part of the lifting portion is threadedly connected to the support rod.

[0017] By further designing the extension arm, an extension section and a lifting section are provided at one end of the extension arm connected to the support rod. A groove is provided between the upper parts of the extension section and the lifting section, and several balls are provided in the groove to form a connection between the extension section and the lifting section. Finally, the lower part of the lifting section is threadedly connected to the support rod. When the lifting section is rotated, the vertical lifting of the extension arm can be driven through the threaded engagement between the lifting section and the support rod. When the extension section is rotated, the extension arm can rotate relative to the support rod.

[0018] The present invention can be further configured such that: the extension arm includes two arc-shaped portions located at one end, the two arc-shaped portions are symmetrically arranged on both sides of the support rod, and the ends of the arc-shaped portions are provided with connecting portions with screw holes.

[0019] By further designing, two arc-shaped sections are provided at one end of the extension arm, and a connecting section with screw holes is provided at the end of the arc-shaped sections. After the position of the extension arm is adjusted, the distance between the two connecting sections with screw holes can be adjusted by bolts, so that the two arc-shaped sections are clamped on the support rod, thus completing the positioning of the extension arm.

[0020] The present invention can be further configured such that: the mounting base includes a screw fixed on the operating table, the screw includes an inner hole with internal threads, the locking member includes a positioning bolt that forms a screwed engagement with the inner hole of the screw, the positioning bolt can be inserted into the inner hole of the inner ring of the bearing to be tested, and the head of the positioning bolt and the upper end of the screw can respectively form an abutment engagement with the upper and lower ends of the inner ring of the bearing to be tested along the axial direction.

[0021] By further configuring the mounting base, a screw is fixed to the operating table, and the screw has an internal threaded hole. A positioning bolt is provided in the locking component to form a screwed engagement with the internal hole of the screw. After the inner ring of the bearing to be tested is pressed against the upper end of the screw, the positioning bolt passes through the internal hole of the inner ring of the bearing to be tested, so that the head of the positioning bolt and the upper end of the screw can respectively form an abutment engagement with the upper and lower ends of the inner ring of the bearing to be tested in the axial direction, thereby positioning the inner ring of the bearing to be tested. Attached Figure Description

[0022] Figure 1 This is a structural illustration of an embodiment of the present invention. Figure 1 ;

[0023] Figure 2 This is a top view of an embodiment of the present invention;

[0024] Figure 3 This is an embodiment of the present invention. Figure 2 Sectional view at point AA;

[0025] Figure 4 This is an embodiment of the present invention. Figure 2 Sectional view at point BB;

[0026] Figure 5 This is an embodiment of the present invention. Figure 4 An enlarged view of part a;

[0027] Figure 6 This is a structural illustration of an embodiment of the present invention. Figure 2 ;

[0028] The components include: 1. Operating platform; 2. Adjusting frame; 21. Support rod; 22. Horizontal bar; 23. Limiting rod; 24. Extension arm; 241. Extension part; 242. Lifting part; 243. Arc-shaped part; 244. Connecting part; 3. Mounting base; 31. Locking part; 311. Positioning bolt; 32. Screw; 321. Inner hole; 33. Nut; 34. Ring part; 341. Through hole; 342. Ball bearing; 445. Measuring assembly; 41. Load part; 42. Flexible part; 43. Connecting part; 44. Weight adjustment plate; 441. Vertical channel; 442. Load block; 443. Partition plate; 444. First plate part; 444. Outer retaining ring; 4441. Inner retaining ring; 4442. Second plate part; 445. Bearing to be tested; 5. Inner ring of bearing to be tested; 51. Outer ring of bearing to be tested; 52. Detailed Implementation

[0029] An example embodiment of the bearing starting torque measuring device of the present invention Figure 1-6 As shown: The system includes an operating table 1, on which an adjusting frame 2, a mounting base 3, and a measuring component 4 are mounted. The mounting base 3 includes a locking element 31, which is used to form a positioning fit between the inner ring 51 of the bearing under test and the mounting base 3. The adjusting frame 2 includes a vertically extending support rod 21 and a horizontal bar 22 perpendicular to the support rod. The horizontal bar 22 can move circumferentially relative to the support rod 21. The measuring component 4 includes a load section 41, a flexible element 42, and a connecting element 43. One end of the flexible element 42 is positioned on the outer ring 52 of the bearing under test via the connecting element 43. The other end of the flexible element 42 is connected to the load section 41 above the horizontal bar 22. The load section 41 is used to connect a load block 41 that applies tension to the flexible element 42.

[0030] The measuring component 4 includes a weight adjustment disk 44, which includes a vertical channel 441, a plurality of load blocks 442, and a plurality of partitions 443. The partitions 443 are circumferentially distributed on the weight adjustment disk 44 and extend radially. The partitions 443 can separate the load blocks 442 and can drive the load blocks 442 to move circumferentially. The vertical channel 441 extends vertically and allows the load part 442 to extend into it. The vertical channel 441 allows the load block to move downward under its own weight. The load part 41 is composed of magnetic blocks.

[0031] The adjusting disc 44 includes a first disc portion 444 and a second disc portion 445, which are rotatably connected. The first disc portion 444 is provided with an outer retaining ring 4441 and an inner retaining ring 4442. The vertical channel 441 has notches formed on both the outer retaining ring 4441 and the inner retaining ring 4442. The partition 443 is provided on the second disc portion 445 and corresponds to the space between the outer retaining ring 4441 and the inner retaining ring 4442.

[0032] The first disc portion 444 is provided with an elastic protrusion on the movement path of the partition 443.

[0033] The connector 43 is claw-shaped, and has two arc-shaped claw portions 431. The two claw portions 431 are symmetrical and can open and close. The inner side of the claw portion 431 is provided with several elastic abutment portions.

[0034] The adjusting frame 2 is provided with a limiting rod 23, which is telescopic. One end of the limiting rod 23 is provided with an abutting rough surface, and the limiting rod 23 can be telescopically extended until the abutting rough surface at one end abuts against the outer ring 52 of the bearing to be tested.

[0035] The adjustment frame 2 includes an extension arm 24, one end of which is sleeved on the support rod 21. The extension arm 24 has an extension portion 241 and a lifting portion 242, both of which are annular. There are opposing grooves between the upper parts of the extension portion 241 and the lifting portion 242. A plurality of balls are arranged between the two grooves. The lower part of the lifting portion 242 is threadedly connected to the support rod 21.

[0036] The extension arm 24 includes two arc-shaped portions 243 located at one end, which are symmetrically arranged on both sides of the support rod 21, and the ends of the arc-shaped portions 243 are provided with connecting portions 244 with screw holes.

[0037] The mounting base 3 includes a screw 32 fixed on the operating table 1. The screw 32 includes an inner hole 321 with internal threads. The locking member 31 includes a positioning bolt 311 that forms a screwed engagement with the inner hole 321 of the screw. The positioning bolt 311 can pass through the inner hole of the inner ring 51 of the bearing to be tested, and the cap of the positioning bolt 311 and the upper end of the screw 32 can respectively form an abutment engagement with the upper and lower ends of the inner ring 51 of the bearing to be tested in the axial direction.

[0038] A nut 33 is screwed onto the screw 32. The nut 33 has an upwardly extending ring 34. The ring 34 has an inner cavity and several through holes 341 communicating with the inner cavity. Several balls 342 that can extend out of the through holes are arranged in the inner cavity. The nut is screwed onto the screw, and the ring is provided on the nut. The inner cavity of the ring is filled with balls, and the balls extend out through the several through holes to engage with the outer ring of the bearing to be tested. When testing self-aligning bearings, the vertical movement of the nut can adjust the position between the outer ring and the inner ring of the bearing to be tested, ensuring the accuracy of the measurement. Furthermore, the contact between the balls and the outer ring of the bearing to be tested provides a small and fixed resistance, which facilitates subsequent calculations.

[0039] The above examples are merely one preferred embodiment of the present invention. Ordinary variations and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are all included within the protection scope of the present invention.

Claims

1. A bearing starting torque measuring device, comprising an operating table, characterized in that: The operating platform is equipped with an adjustment frame, a mounting base, and a measuring component. The mounting base includes a locking element, which is used to establish a positioning fit between the inner ring of the bearing under test and the mounting base. The adjustment frame includes a vertically extending support rod and a horizontal bar perpendicular to the support rod. The horizontal bar can move circumferentially relative to the support rod. The measuring component includes a load section, a flexible component, and a connecting component. One end of the flexible component is positioned on the outer ring of the bearing under test via the connecting component. The other end of the flexible component is connected to the load section above the horizontal bar. The load section is used to connect a load block that applies tension to the flexible component. The measuring component includes a weight adjustment disc, which includes a vertical... The system comprises a channel, several load blocks, and several partitions. The partitions are circumferentially distributed on the weight adjustment plate and extend radially. The partitions can separate the load blocks and drive them to move circumferentially. The vertical channel extends vertically and allows the load portion to extend into it. The vertical channel allows the load blocks to move downwards under their own weight. The load portion is composed of magnetic blocks. The weight adjustment plate includes a first plate and a second plate, which are rotatably connected. The first plate has an outer retaining ring and an inner retaining ring. The vertical channel has notches formed on both the outer and inner retaining rings. The partitions are located on the second plate and are positioned between the outer and inner retaining rings.

2. The bearing starting torque measuring device according to claim 1, characterized in that: The first disc is provided with an elastic protrusion on the movement path of the partition.

3. The bearing starting torque measuring device according to claim 1 or 2, characterized in that: The connector is claw-shaped, with two arc-shaped claws on it. The two claws are symmetrical and can open and close. Several elastic abutment parts are provided on the inner side of the claws.

4. The bearing starting torque measuring device according to claim 1 or 2, characterized in that: The adjustment frame is equipped with a limit rod, which is telescopic. One end of the limit rod is provided with an abutting rough surface, and the limit rod can be telescopically extended until the abutting rough surface at one end abuts against the outer ring of the bearing to be tested.

5. The bearing starting torque measuring device according to claim 1 or 2, characterized in that: The adjustment frame includes an extension arm, one end of which is sleeved on a support rod. The extension arm has an annular extension portion and a lifting portion at one end. There is a groove between the upper parts of the extension portion and the lifting portion, and a plurality of balls are arranged between the two grooves. The lower part of the lifting portion is threadedly connected to the support rod.

6. The bearing starting torque measuring device according to claim 5, characterized in that: The extension arm includes two arc-shaped portions located at one end, which are symmetrically arranged on both sides of the support rod, and the ends of the arc-shaped portions are provided with connecting portions with screw holes.

7. The bearing starting torque measuring device according to claim 1, 2, or 6, characterized in that: The mounting base includes a screw fixed on the operating table. The screw includes an inner hole with internal threads. The locking element includes a positioning bolt that forms a screwed engagement with the inner hole of the screw. The positioning bolt can pass through the inner hole of the inner ring of the bearing to be tested, and the head of the positioning bolt and the upper end of the screw can respectively form an abutment engagement with the upper and lower ends of the inner ring of the bearing to be tested along the axial direction.

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