Fixing clamp for conical bearing roller hardness detection

Abstract

The utility model provides a fixing clamp for detecting the hardness of a conical bearing roller, which is characterized in that a notch is formed in the middle of a base, and each side wing is provided with an arc-shaped groove; arc-shaped racks are fixedly installed on the side wings, the inner arc faces of the racks are tooth faces, the inner arc faces of the two racks are opposite, the racks are located between the arc-shaped grooves and the notches, and the racks and the arc-shaped grooves are concentric. The positioning block laterally extends out of the pipe body and is provided with a through screw hole, the pipe body is provided with external threads, and the through screw hole is perpendicular to the pipe body; the gear is fixedly installed outside the pipe body, the pipe body is inserted into the arc-shaped groove of the base, the other face of the side wing is exposed, and the gear is meshed with the rack. The nuts are located on the two sides of the side wings relative to the gears and screwed on the external threads of the pipe body. The bolt is matched with the through screw hole of the positioning block in a threaded manner and penetrates through the through screw hole; the conical roller is placed in the notch, and the bottom ends of the two bolts abut against the two end faces of the conical roller. According to the utility model, the conical roller can be fixed in the clamp for measurement.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine gearbox tooling, specifically a fixing fixture for testing the hardness of rollers in tapered bearings. Background Technology

[0002] Due to its advantages such as being pollution-free and having low construction costs, wind power generation has experienced rapid development in recent years.

[0003] Tapered roller bearings are compact in structure and have a high load-bearing capacity, making them widely used in wind turbine gearboxes. The hardness of the bearing rollers determines the bearing's contact fatigue strength and wear resistance, and is an important performance indicator for evaluating bearings. Tapered roller bearing failure typically manifests as pitting on one side of the roller, and pitting is usually related to hardness. Therefore, the surface hardness of the tapered roller is one of the important bases for judging the cause of bearing failure. However, due to the special shape of the tapered roller, measuring surface hardness is difficult. Typically, the operator holds the tapered roller with one hand while using the other to operate the hardness tester, a process that cannot guarantee stability and results in inaccurate data.

[0004] The technical solution of existing technology 1 is as follows:

[0005] Previously, when using a Rockwell hardness tester to measure the surface hardness of a tapered roller, one hand operated the equipment while the other hand held the tapered roller to perform the hardness measurement.

[0006] The disadvantages of existing technology 1 are:

[0007] During hardness measurement, if you hold the conical roller with one hand, the roller is prone to slipping, which will cause you to repeat the measurement multiple times and result in inaccurate results. Utility Model Content

[0008] This invention provides a fixture for testing the hardness of rollers in tapered bearings. Its purpose is to overcome the shortcomings of the prior art, which can fix the tapered rollers in the fixture for measurement and improve the measurement accuracy.

[0009] The technical solution adopted by this utility model to solve its technical problem is:

[0010] A fixture for testing the hardness of rollers in tapered bearings, characterized in that:

[0011] The base has a notch in the middle, and the base has side wings on both sides of the notch. Each side wing has an arc-shaped groove, and the arc-shaped grooves on both sides are symmetrical and their inner arc surfaces face each other.

[0012] An arc-shaped rack is fixedly installed on the side wing. The inner arc surface of the rack is the tooth surface and the inner arc surfaces of the two racks are opposite each other. The rack is located between the arc groove and the notch, and the rack and the arc groove are concentric.

[0013] The positioning block extends laterally out of the tube body. The positioning block has a through screw hole, and the tube body has an external thread. The through screw hole is perpendicular to the tube body.

[0014] The gear is fixedly installed outside the tube body, which is inserted into the arc-shaped groove of the base and exposes the other side of the wing. The gear meshes with the rack.

[0015] The nuts are located on both sides of the side wing relative to the gears. The nuts are screwed onto the external threads of the tube body. When the nuts are pressed against the side wings, the gears are pressed against the side wings, thereby fixing the positioning block to the base.

[0016] The bolts are screwed in and pass through the through-hole of the positioning block;

[0017] The conical roller is placed into the notch, and the bottom ends of the two bolts press against the two end faces of the conical roller to fix the conical roller axially.

[0018] The base is fixedly installed on the base plate.

[0019] The support block is hinged to the support column, and the external thread at the bottom of the support column is screwed into the threaded hole of the support seat. The support seat is placed flat on the plane of the base plate. The support block contacts the surface of the tapered roller and supports the tapered roller.

[0020] The lower end of the base has a horizontal support plate. Align the mounting through hole on the support plate with the corresponding mounting screw hole on the base plate. The bolt passes through the mounting through hole on the support plate and is screwed into the corresponding mounting screw hole on the base plate, thereby fixing the base to the base plate.

[0021] The base has a notch in the middle, and the edges of the notch are rounded.

[0022] Each rack has two pin holes, and two corresponding pin holes are opened on the side wing. The cylindrical pins are inserted into the pin holes on the rack and the corresponding pin holes on the side wing in a transition fit, so that the rack is fixedly installed on the side wing.

[0023] The nut and elastic washer are located on both sides of the side wing relative to the gear. The elastic washer is fitted onto the tube body, and the nut is screwed onto the external thread of the tube body and presses down on the elastic washer. When the nut presses down on the elastic washer, the elastic washer presses down on the side wing, and the gear presses down on the side wing, thereby fixing the positioning block to the base.

[0024] The advantages of this utility model are:

[0025] This utility model of a fixing fixture is used for measuring surface hardness with tapered rollers. It can use the shape of the tapered roller itself to fix the tapered roller, making it less likely to slip, reducing the number of repeated measurements, and making the measured data more accurate and reliable. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This is a partial sectional view of the tooling of this utility model from the main view;

[0028] Figure 2 for Figure 1 A partial cross-sectional view along direction A;

[0029] Figure 3 This is a diagram showing the tooling of this utility model in use. Detailed Implementation

[0030] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort. To facilitate understanding of this utility model, a more detailed description of this utility model will be provided below in conjunction with the accompanying drawings and specific embodiments.

[0031] It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] like Figure 1 , Figure 2 , Figure 3 As shown:

[0033] This utility model is a fixing fixture for testing the hardness of rollers in tapered bearings.

[0034] The lower end of the base 2 has a horizontal support plate 21, so that the base 2 is L-shaped. The support plate 21 has several mounting through holes 211. The middle part of the base 2 has a notch 22 with the edge of the notch 22 being arc-shaped. The base 2 has side wings 23 on both sides of the notch 22. Each side wing 23 has an arc-shaped groove 24. The arc-shaped grooves 24 on both sides are symmetrical and their inner arc surfaces face each other.

[0035] Install the base 2 onto the base plate 1: Align the mounting through hole 211 on the support plate 21 with the corresponding mounting screw hole 111 on the base plate 1, pass the bolt 3 through the mounting through hole 211 and screw it into the mounting screw hole 111, and tighten the bolt 3. In this way, the base 2 is fixedly installed onto the base plate 1.

[0036] Two arc-shaped racks 7 are respectively installed on the two side wings 23 of the base 2. The inner arc surface of the rack 7 is the tooth surface and the inner arc surfaces of the two racks 7 are opposite each other. The rack 7 is located between the arc groove 24 and the notch 22, and the rack 7 and the arc groove 24 are concentric.

[0037] Each rack 7 has two pin holes 71, and the side wing 23 has two corresponding pin holes 271. Align the pin holes 71 and 271, and insert the cylindrical pin 6 into the corresponding pin holes 71 and 271 with a transition fit. The cylindrical pin 6 is installed in place and is used to position and fix the two racks 7 on the side wing 23 of the base 2.

[0038] The positioning block 9 extends laterally out of the tube body 92. The positioning block 9 has a through screw hole 911, and the tube body 92 has an external thread. The through screw hole 911 and the tube body 92 are perpendicular.

[0039] Gear 8 is fixedly installed outside tube body 92. Tube body 92 is inserted into arc groove 24 of base 2 and the other side of side wing 23 is exposed. Gear 8 meshes with rack 7.

[0040] Nut 4 and elastic washer 5 are located on both sides of base 2 relative to gear 8. Elastic washer 5 is fitted onto tube 92. Nut 4 is screwed onto the external thread of tube 92 and presses against elastic washer 5. In this way, when nut 4 is tightened and elastic washer 5 is pressed against elastic washer 5, elastic washer 5 presses against side wing 23. Gear 8 also presses against side wing 23, and positioning block 9 will be fixedly connected to base 2.

[0041] Bolt 10 is screwed in and passes through the through screw hole 911 of positioning block 9.

[0042] The cylindrical pin 12 passes through the corresponding mounting holes of the support block 11 and the support column 13, hinged to the support block 11 on the support column 13. The external thread at the bottom of the support column 13 is screwed into the threaded hole 141 of the support seat 14. Finally, the support seat 14 is placed flat on the plane of the base plate 1.

[0043] The specific testing steps are as follows:

[0044] The fixing clamps are installed according to the assembly sequence described above.

[0045] The base plate 1 is placed on the workbench 201 of the hardness measuring instrument 200.

[0046] Place the conical roller 300 in the middle of the fixture, that is, in the notch 22. By rotating the two bolts 10, the bottom ends of the bolts 10 press against the two end faces of the conical roller 300, thus fixing the conical roller 300 axially.

[0047] Loosen nut 4, and the positioning block 9 is no longer fixedly connected to the base 2. Rotate the two positioning blocks 9, and the gear 8 and rack 7 installed on the positioning blocks 9 will mesh and rotate. This will also rotate the bolt 10. Slowly adjust the central axis of the fixed conical roller 300 to ensure that it is flush with the horizontal line. Finally, tighten nut 4, and the positioning block 9 will be fixedly connected to the base 2, and the conical roller 200 will be fixed.

[0048] The support base 14 is placed below the center of the conical roller 300. By rotating the support base 13, the support column 13 moves upward due to the thread action. The support block 11 connected to the support column 13 moves upward and contacts the surface of the conical roller 300. The support block 11 rotates around the cylindrical pin 12 to adapt to the surface of the conical roller 300. Finally, the support block 11 supports the conical roller 300, ensuring that the conical roller 300 is supported by a vertical force.

[0049] Adjust the clamps according to the above steps, based on the size of the conical roller 300, so that the conical roller 300 is fixed in both the horizontal and vertical directions;

[0050] After confirming that the tapered roller 300 is fixedly clamped, the surface hardness of the tapered roller 300 is measured using the test head 202.

[0051] Loosen bolt 10, rotate the conical roller 300 degrees, then tighten it again and measure once more.

[0052] Repeat the above steps to measure the hardness of the tapered roller multiple times.

[0053] Previously, when measuring hardness, problems such as repeated measurements and inaccurate data due to slippage of the tapered rollers could not be avoided. This fixing fixture, which secures the tapered rollers, solves this problem, reduces the number of unsuccessful measurements, and ensures the accuracy and reliability of the data.

[0054] The various embodiments described in this specification are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above description of the disclosed embodiments enables those skilled in the art to implement or use this invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this invention. Therefore, this invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fixing fixture for testing the hardness of rollers in tapered bearings, characterized in that: The base has a notch in the middle, and the base has side wings on both sides of the notch. Each side wing has an arc-shaped groove, and the arc-shaped grooves on both sides are symmetrical and their inner arc surfaces face each other. An arc-shaped rack is fixedly installed on the side wing. The inner arc surface of the rack is the tooth surface and the inner arc surfaces of the two racks are opposite each other. The rack is located between the arc groove and the notch, and the rack and the arc groove are concentric. The positioning block extends laterally out of the tube body. The positioning block has a through screw hole, and the tube body has an external thread. The through screw hole is perpendicular to the tube body. The gear is fixedly installed outside the tube body, which is inserted into the arc-shaped groove of the base and exposes the other side of the wing. The gear meshes with the rack. The nuts are located on both sides of the side wing relative to the gears. The nuts are screwed onto the external threads of the tube body. When the nuts are pressed against the side wings, the gears are pressed against the side wings, thus fixing the positioning block to the base. The bolts are screwed in and pass through the through-hole of the positioning block; The conical roller is placed into the notch, and the bottom ends of the two bolts press against the two end faces of the conical roller to fix the conical roller axially. The base is fixedly installed on the base plate.

2. A fixture for hardness testing of a conical bearing roller as claimed in claim 1, characterized in that: The support block is hinged to the support column, and the external thread at the bottom of the support column is screwed into the threaded hole of the support seat. The support seat is placed flat on the plane of the base plate. The support block contacts the surface of the tapered roller and supports the tapered roller.

3. A fixture for hardness testing of a conical bearing roller as claimed in claim 1, wherein: The lower end of the base has a horizontal support plate. Align the mounting through hole on the support plate with the corresponding mounting screw hole on the base plate. The bolt passes through the mounting through hole on the support plate and is screwed into the corresponding mounting screw hole on the base plate, thereby fixing the base to the base plate.

4. A fixture for hardness testing of a conical bearing roller as defined in claim 1, characterized in that: The notch in the middle of the base has a rounded edge.

5. A fixture for hardness testing of a conical bearing roller as defined in claim 1, wherein: Each rack has two pin holes, and two corresponding pin holes are opened on the side wing. The cylindrical pins are inserted into the pin holes on the rack and the corresponding pin holes on the side wing in a transition fit, so that the rack is fixedly installed on the side wing.

6. A fixture for hardness testing of a conical bearing roller as defined in claim 1, characterized in that: The nut and elastic washer are located on both sides of the side wing relative to the gear. The elastic washer is fitted onto the tube body, and the nut is screwed onto the external thread of the tube body and presses down on the elastic washer. When the nut presses down on the elastic washer, the elastic washer presses down on the side wing, and the gear presses down on the side wing, thereby fixing the positioning block to the base.

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