Bearing static load test tool

Abstract

The utility model relates to the technical field of bearing static load test, in particular to a bearing static load test tool, which is characterized in that a test shaft is provided with a first mounting part for mounting a first test bearing and a second mounting part for mounting a second test bearing, and a shaft shoulder part is arranged between the first mounting part and the second mounting part; two ends of the test shaft are respectively provided with a first polygonal positioning block and a second polygonal positioning block; the shaft shoulder part is supported on the cushion block; the positioning loading sleeve is mounted at the upper parts of the first test bearing and the second test bearing; a plane is arranged on one side, deviating from the first test bearing and the second test bearing, of the positioning loading sleeve; the first positioning supporting frame is provided with a first positioning groove, and the first positioning groove is matched with the first polygonal positioning block. A second positioning groove is formed in the second positioning supporting frame and matched with the second polygonal positioning block. According to the utility model, the mounting and dismounting in the loading process are convenient and fast, the loading position can be well determined, and the adaptability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing static load testing, in particular to a bearing static load testing tool. Background Art

[0002] The rated static load of a bearing refers to the maximum load that a part or equipment can withstand when it is stationary or static; the rated static load is usually used in mechanical engineering, material science, construction engineering and other fields. It refers to the maximum load that a part or equipment can withstand under normal conditions of use.

[0003] Static load test refers to a method of measuring the deformation or stress of a bearing by applying a certain load. This method can be used to obtain the actual load-bearing capacity of the bearing and compare it with the rated static load to determine whether the bearing is of qualified quality. Static load test needs to be carried out in a laboratory or factory environment, and requires the use of professional test equipment and tooling. The existing test tooling has a complicated disassembly and installation process. In addition, the existing test equipment and tooling have low adaptability to presses, and different types of presses require special test equipment and tooling. Utility Model Content

[0004] In view of the defects of the prior art, the utility model provides a bearing static load test fixture, which ensures convenient and quick installation and disassembly during the loading process, can well determine the loading position, can complete the loading test on a general press, and has high adaptability.

[0005] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is a bearing static load test tool, which includes a test shaft, a cushion block, a positioning and loading sleeve, a first positioning support frame and a second positioning support frame; the test shaft is provided with a first mounting portion for mounting a first test bearing and a second mounting portion for mounting a second test bearing, a shaft shoulder portion is provided between the first mounting portion and the second mounting portion, and a first polygonal positioning block and a second polygonal positioning block are provided at both ends of the test shaft respectively; the cushion block is provided with a V-shaped groove, and the shaft shoulder portion is supported on the V-shaped groove; the positioning and loading sleeve is installed on the upper part of the first test bearing and the second test bearing, and a plane is provided on the side of the positioning and loading sleeve away from the first test bearing and the second test bearing; the first positioning support frame is provided with a first positioning groove, and the first positioning groove cooperates with the first polygonal positioning block to limit the rotation of the test shaft; the second positioning support frame is provided with a second positioning groove, and the second positioning groove cooperates with the second polygonal positioning block to limit the rotation of the test shaft.

[0006] Furthermore, the first polygonal positioning block and the second polygonal positioning block are both square positioning blocks.

[0007] Further, both the first polygonal positioning block and the second polygonal positioning block are hexagonal positioning blocks.

[0008] Further, the positioning and loading sleeve includes a loading sleeve body in a semi-cylindrical shape.

[0009] Further, the positioning and loading sleeve is provided with a through hole to provide a window for marking the first test bearing and the second test bearing.

[0010] Further, a first limiting nut is arranged on one side of the first mounting portion away from the shaft shoulder, and the first limiting nut is in threaded connection with the test shaft to limit the axial displacement of the first test bearing.

[0011] Further, a second limiting nut is arranged on one side of the second mounting portion away from the shaft shoulder, and the second limiting nut is in threaded connection with the test shaft to limit the axial displacement of the second test bearing.

[0012] When performing the static load test, install the first test bearing and the second test bearing on the test shaft, axially fix the two sets of test bearings using the first limiting nut and the second limiting nut, place the assembled entire test shaft on the cushion block, then install the positioning and loading sleeve on the two sets of test bearings, so that a flat surface is formed at the upper end, which is convenient for the flat surface of the press to contact for loading. Push the first positioning support frame and the second positioning support frame onto the first polygonal positioning block and the second polygonal positioning block protruding from both sides of the test shaft to axially fix the test shaft and prevent the test shaft from rotating. Mark the position of the outer ring of the bearing through the through hole provided on the positioning and loading sleeve. After the entire tooling is installed, use a press to press the set load on the positioning and loading sleeve, maintain for a certain period of time, lift the press platen, rotate the shaft and the outer ring by 90° respectively, then use the press to press the set load on the positioning and loading sleeve again, continue for a certain period of time, lift the press and remove the two sets of test bearings, and detect the deformation of the inner and outer rings of the two sets of test bearings to complete the test.

[0013] Advantages of the present utility model: Set the cushion block to pad up the shaft shoulder of the test shaft, install the first test bearing and the second test bearing on the test shaft, ensuring convenient and fast installation and disassembly during the loading process; Set the positioning and loading sleeve and the flat surface, which can well determine the loading position; The loading test can be completed on a general press, with relatively high adaptability. Description of the Drawings

[0014] Figure 1 It is a schematic structural view of a bearing static load test tooling in an embodiment of the present utility model;

[0015] Figure 2 It is a side view of a bearing static load test tooling in an embodiment of the present utility model;

[0016] Figure 3 This is a schematic structural view of a cushion block of a bearing static load test tooling in an embodiment of the present utility model;

[0017] Figure 4 This is a side view of the cushion block in an embodiment of the present utility model;

[0018] Figure 5 This is a schematic structural view of a positioning loading sleeve of a bearing static load test tooling in an embodiment of the present utility model;

[0019] Figure 6 This is a side view of the positioning loading sleeve in an embodiment of the present utility model;

[0020] Figure 7 This is a schematic structural view of a first positioning support frame of a bearing static load test tooling in an embodiment of the present utility model;

[0021] Figure 8 This is a side view of the first positioning support frame in an embodiment of the present utility model;

[0022] In the figure:

[0023] 100, test shaft; 110, first installation part; 120, second installation part; 130, shaft shoulder; 140, first polygonal positioning block; 150, second polygonal positioning block; 160, first limit nut; 170, second limit nut;

[0024] 200, cushion block; 210, V-shaped groove;

[0025] 300, positioning loading sleeve; 310, plane; 320, through hole;

[0026] 400, first positioning support frame; 410, first positioning groove;

[0027] 500, second positioning support frame; 510, second positioning groove;

[0028] 10, first test bearing; 20, second test bearing. Detailed implementation manners

[0029] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific implementation manners of the present utility model will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0030] See Figure 1 and Figure 2 , which shows a structural schematic diagram of a bearing static load test tooling in an embodiment of the present utility model. It includes a test shaft 100, a spacer 200, a positioning loading sleeve 300, a first positioning support frame 400 and a second positioning support frame 500; the test shaft 100 is provided with a first installation part 110 for installing a first test bearing 10 and a second installation part 120 for installing a second test bearing 20. An axial shoulder 130 is arranged between the first installation part 110 and the second installation part 120. First polygon positioning blocks 140 and second polygon positioning blocks 150 are respectively arranged at both ends of the test shaft 100; the spacer 200 is provided with a V-shaped groove 210, and the axial shoulder 130 is supported on the V-shaped groove 210; the positioning loading sleeve 300 is installed above the first test bearing 10 and the second test bearing 20, and a plane 310 is arranged on the side of the positioning loading sleeve 300 facing away from the first test bearing 10 and the second test bearing 20; the first positioning support frame 400 is provided with a first positioning groove 410, and the first positioning groove 410 cooperates with the first polygon positioning block 140 to limit the rotation of the test shaft 100; the second positioning support frame 500 is provided with a second positioning groove 510, and the second positioning groove 510 cooperates with the second polygon positioning block 150 to limit the rotation of the test shaft 100.

[0031] In one embodiment, both the first polygon positioning block 140 and the second polygon positioning block 150 are square positioning blocks. Correspondingly, the first positioning groove 410 and the second positioning groove 510 are U-shaped grooves. The two sides of the square positioning block are attached to the two side surfaces of the U-shaped groove. During the test process, the rotation of the test shaft 100 can be avoided.

[0032] In one embodiment, both the first polygon positioning block 140 and the second polygon positioning block 150 are hexagonal positioning blocks. Correspondingly, the first positioning groove 410 and the second positioning groove 510 are U-shaped grooves. The two sides of the hexagonal positioning block are attached to the two side surfaces of the U-shaped groove. During the test process, the rotation of the test shaft 100 can be avoided.

[0033] In one embodiment, the positioning loading sleeve 300 includes a semi-cylindrical loading sleeve body.

[0034] In one embodiment, the positioning loading sleeve 300 is provided with a through hole 320 to provide a window for marking the first test bearing 10 and the second test bearing 20. With such a setting, through the through hole 320 provided on the positioning loading sleeve 300, it is convenient to mark the position of the outer ring of the bearing, and the inner ring and the outer ring of the bearing can be accurately positioned throughout the process.

[0035] In one embodiment, a first limit nut 160 is provided on the side of the first mounting portion 110 away from the shaft shoulder 130. The first limit nut 160 is threadedly connected to the test shaft 100 to limit the axial displacement of the first test bearing 10.

[0036] In one embodiment, a second limit nut 170 is provided on the side of the second mounting portion 120 away from the shaft shoulder 130. The second limit nut 170 is threadedly connected to the test shaft 100 to limit the axial displacement of the second test bearing 20.

[0037] When performing the static load test, the first test bearing 10 and the second test bearing 20 are installed on the test shaft 100. The first limit nut 160 and the second limit nut 170 are used to axially fix the two sets of test bearings. The assembled entire test shaft 100 is placed on the cushion block 200, and then the positioning loading sleeve 300 is installed on the two sets of test bearings. In this way, a plane 310 is formed at the upper end, which is convenient for the plane of the press to contact and apply the load. The first positioning support frame 400 and the second positioning support frame 500 are pushed onto the first polygonal positioning block 140 and the second polygonal positioning block 150 protruding from both sides of the test shaft 100 to axially fix the test shaft 100 and prevent the test shaft 100 from rotating. Through the through hole 320 provided on the positioning loading sleeve 300, the position of the bearing outer ring is marked. After the entire tooling is installed, the set load is pressed on the positioning loading sleeve 300 by the press above and maintained for a certain period of time. Then, the press plate is lifted, the shaft and the outer ring are rotated 90° respectively, and then the set load is pressed on the positioning loading sleeve 300 by the press again and maintained for a certain period of time. Then, the press plate is lifted and the two sets of test bearings are removed, and the deformation amounts of the inner and outer rings of the two sets of test bearings are detected, and the test is completed.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0040] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature. It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

Claims

1. A static load test tooling for bearings, characterized in that: including a test shaft, which is provided with a first installation part for installing a first test bearing and a second installation part for installing a second test bearing. A shaft shoulder is arranged between the first installation part and the second installation part. First and second polygonal positioning blocks are respectively arranged at two ends of the test shaft; a cushion block, which is provided with a V-shaped groove, and the shaft shoulder is supported on the V-shaped groove; a positioning and loading sleeve, which is installed above the first test bearing and the second test bearing. A plane is arranged on one side of the positioning and loading sleeve away from the first test bearing and the second test bearing; a first positioning support frame, which is provided with a first positioning groove, and the first positioning groove cooperates with the first polygonal positioning block to limit the rotation of the test shaft; a second positioning support frame, which is provided with a second positioning groove, and the second positioning groove cooperates with the second polygonal positioning block to limit the rotation of the test shaft.

2. The static load test tooling for a bearing according to claim 1, wherein: Both the first polygonal positioning block and the second polygonal positioning block are square positioning blocks.

3. The static load test tooling for a bearing according to claim 1, characterized in that: Both the first polygonal positioning block and the second polygonal positioning block are hexagonal positioning blocks.

4. A static load test tooling for a bearing according to claim 1, characterized in that: The positioning and loading sleeve includes a semi-cylindrical loading sleeve body.

5. The static load test tooling for a bearing according to claim 1, wherein: The positioning and loading sleeve is provided with a through hole to provide a window for marking the first test bearing and the second test bearing.

6. A static load test tooling for a bearing according to any one of claims 1-4, characterized in that: A first limit nut is arranged on one side of the first installation part away from the shaft shoulder, and the first limit nut is threadedly connected with the test shaft to limit the axial displacement of the first test bearing.

7. A static load test tooling for a bearing according to any one of claims 1-4, characterized in that: A second limit nut is arranged on one side of the second installation part away from the shaft shoulder, and the second limit nut is threadedly connected with the test shaft to limit the axial displacement of the second test bearing.

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