Swing test tool for self-lubricating joint bearing

Abstract

The utility model provides a self-lubricating joint bearing swing test tool, which belongs to the technical field of bearing test and comprises a swing mandrel, a support sleeve, a left cushion block, a right cushion block, a left nut, a right nut, a spring washer, a left support accompanying bearing, a right support accompanying bearing, a left support seat, a right support seat, a loading plate, a test platform bottom plate and at least one threaded pull rod, an inner ring of a self-lubricating joint bearing is clamped and fixed through threaded connection and a cushion block assembly, a bearing outer ring is installed in a loading plate hole, a left supporting seat and a right supporting seat are installed on a test platform bottom plate and are locked through threaded pull rods, and the left supporting seat and the right supporting seat are prevented from horizontally moving in a bearing state; the tool provided by the utility model has the advantages of being reliable in assembly, accurate in positioning, high in rigidity and strong in adaptability, and is suitable for swing tests of self-lubricating joint bearings of various specifications.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical experimental equipment, specifically relates to the technical field of bearing test, and particularly relates to a self-lubricating spherical plain bearing swing test tooling. Background Technique

[0002] Due to the characteristics of no need for lubrication, compact structure, strong load-bearing capacity, etc., self-lubricating spherical plain bearings are widely used in the fields of aerospace, construction machinery, automobiles, etc. In the process of verifying the life and performance of such bearings, the swing wear test is an important and commonly used means. Most of the existing swing test toolings adopt a swing mandrel with a slender structure, and the supporting test bearings are installed at both ends of the bearing working part of the mandrel. Since the working section of the mandrel is relatively thin and the structural rigidity is insufficient, when performing swing tests under high load and high torque conditions, the mandrel is prone to bending or breaking.

[0003] The fracture of the mandrel not only leads to the interruption of the test, but also may cause damage to the self-lubricating spherical plain bearing being tested, seriously affecting the integrity and reliability of the test data. In addition, the replacement and maintenance cycle after the mandrel is damaged is relatively long, further exacerbating the increase in test costs and the delay of the test cycle, which is not conducive to the rapid research and development verification of new products.

[0004] In view of this, how to provide an improved swing test tooling with high structural strength, good rigidity, stability and reliability to meet the test requirements of modern high-performance self-lubricating spherical plain bearings is an urgent problem to be solved in the existing technology. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is how to provide an improved swing test tooling with high structural strength, good rigidity, stability and reliability to meet the test requirements of modern high-performance self-lubricating spherical plain bearings.

[0006] On the one hand, the utility model provides a self-lubricating spherical plain bearing swing test tooling, which includes: a swing mandrel 11 with an integrated stepped shaft design, a support sleeve 5, a left spacer 4, a right spacer 8, a left nut 9, a first spring washer 10, a left support test bearing 3, a right support test bearing 12, a left support seat 2, a right support seat 15, a right nut 14, a second spring washer 13, a loading plate 6, a test platform bottom plate 1, at least one threaded tie rod 18, and a nut 19;

[0007] Wherein, the right support test bearing 12 is installed on the swing mandrel 11, the swing mandrel 11 has an external thread, and is clamped and fixed at the right end through the right nut 14 and the second spring washer 13.

[0008] Place the right cushion block 8, install the self-lubricating spherical plain bearing 7 on the outside diameter in the hole of the loading plate 6, pass the inner hole of the self-lubricating spherical plain bearing 7 through the swing mandrel 11, make the right end face of the support sleeve 5 contact with the inner ring end face of the self-lubricating spherical plain bearing 7, and sleeve the inner hole of the left support test bearing 3 onto the support sleeve 5, the left cushion block 4, the first spring washer 10, and the left nut 9 to clamp and fix the inner ring of the self-lubricating spherical plain bearing 7;

[0009] Install the left support test bearing 3 into the hole of the left support seat 2, and install the right support test bearing 12 into the hole of the right support seat 15;

[0010] Fix the left support seat 2 and the right support seat 15 to the test platform bottom plate 1;

[0011] At least one threaded tie rod 18 passes through the left support seat 2 and the right support seat 15, and both ends of the at least one threaded tie rod 18 are locked left and right by two nuts 19 to ensure that the left support seat 2 and the right support seat 15 will not have horizontal displacement during loading;

[0012] The right end of the swing mandrel 11 is connected to the drive oil cylinder system.

[0013] In combination with the first aspect, optionally, it includes: The swing mandrel 11 with an integrated stepped shaft design adopts a multi-step design from left to right.

[0014] The right end of the swing mandrel 11 with an integrated stepped shaft design is a square head structure 114 for connecting to the drive oil cylinder system.

[0015] In combination with the first aspect, optionally, it includes: The left end of the swing mandrel 11 with an integrated stepped shaft design is provided with a left thread structure 111 for connecting the left nut 9;

[0016] In combination with the first aspect, optionally, it includes: The middle position of the swing mandrel 11 with an integrated stepped shaft design is provided with a right thread structure 113 for connecting the right nut 14.

[0017] In combination with the first aspect, optionally, it includes:

[0018] A stepped structure 112 is provided at the middle position of the swing mandrel 11, and the stepped structure is close to the right inner end face of the self-lubricating spherical plain bearing 7;

[0019] In combination with the first aspect, optionally, it includes:

[0020] A support sleeve flange is provided on the right side of the left support test bearing 3, and the end face of the support sleeve flange is close to the left inner end face of the self-lubricating spherical plain bearing 7 for extending the effective support length of the swing mandrel 11.

[0021] In combination with the first aspect, optionally, it includes:

[0022] At least two T-shaped grooves 23 are provided on the bottom plate 1 of the test platform;

[0023] The left support seat 2 and the right support seat 15 are fixed to the bottom plate 1 of the test platform through internal screws 20 and T-shaped blocks 21, and the T-shaped blocks 21 can slide along the T-shaped grooves 23.

[0024] In combination with the first aspect, optionally, it includes:

[0025] The loading plate 6 is installed outside the swing spindle 11 and the self-lubricating spherical bearing 7 for fixing the self-lubricating spherical bearing 7;

[0026] In combination with the first aspect, optionally, it includes:

[0027] The loading plate 6 serves as an external force loading component to apply a radial load to the self-lubricating spherical bearing 7.

[0028] In combination with the first aspect, optionally, it includes:

[0029] A U-shaped groove, a left guide block 22, and a right guide block 16 are provided at the middle position on the bottom plate 1 of the test platform, and the left guide block 22 and the right guide block 16 are fixed to the U-shaped groove through a bolt structure;

[0030] A groove corresponding to the left guide block 22 is provided at the middle position of the left support seat 2;

[0031] A groove corresponding to the right guide block 16 is provided at the middle position of the right support seat 15;

[0032] The left guide block 22 and the right guide block 16 are used to ensure the sliding accuracy of the left support seat 2 and the right support seat 15 respectively.

[0033] In combination with the first aspect, optionally, it includes:

[0034] The left guide block 22 and the right guide block 16 are strip-shaped,

[0035] Scale tables are provided on the left guide block 22 and the right guide block 16 for measuring the positions of the left support seat 2 and the right support seat 15 to determine the sliding accuracy.

[0036] In combination with the first aspect, optionally, it includes:

[0037] Uniformly distributed through holes are provided on the left guide block 22 and the right guide block 16,

[0038] Uniformly distributed threaded holes corresponding to the through holes are provided in the U-shaped groove of the bottom plate 1 of the test platform,

[0039] Fix the left guide block 22 and the right guide block 16 to the U-shaped groove through a bolt structure and lock them with the bottom plate 1 of the test platform.

[0040] Combined with the first aspect, optionally, it includes:

[0041] Both the left guide block 22 and the right guide block 16 are provided with at least 2 uniformly distributed through holes;

[0042] In the U-shaped groove of the bottom plate 1 of the test platform, at least 4 uniformly distributed threaded holes corresponding to the through holes are provided;

[0043] Combined with the first aspect, optionally, it includes:

[0044] The left guide block 22 is fixed to the bottom plate 1 of the test platform by at least two socket head cap screws 17;

[0045] Combined with the first aspect, optionally, it includes:

[0046] The right guide block 16 is fixed to the bottom plate 1 of the test platform by at least two socket head cap screws 17.

[0047] Combined with the first aspect, optionally, it includes:

[0048] The left support seat 2 and the right support seat 15 are fixed to the bottom plate 1 of the test platform by 8 internal screws 20 and 8 T-shaped blocks 21,

[0049] Combined with the first aspect, optionally, it includes:

[0050] Set 4 threaded tie rods 18 and set 8 nuts 19 to lock the threaded tie rods 18 left and right to ensure that the left support seat 2 and the right support seat 15 will not have horizontal displacement during loading.

[0051] The self-lubricating spherical plain bearing swing test tooling provided by the present utility model significantly improves the rigidity and strength of the mandrel by adopting a swing mandrel with an integrated stepped shaft design, and avoids the problem that the mandrel is prone to fracture under high loads; uses the left and right thread structures in cooperation with nuts and spring washers to reliably clamp the self-lubricating spherical plain bearing, ensuring accurate positioning and high stability of the bearing under test; effectively prevents the support seat from having horizontal displacement under the action of the test load by setting threaded tie rods and locking nuts; introduces a U-shaped groove guiding structure and long strip-shaped guide blocks, improves the accuracy and convenience of the sliding adjustment of the support seat, and is equipped with a scale for accurate positioning; the assembly method of T-shaped groove + T-shaped block further enhances the flexibility and convenience of component replacement and adjustment; the loading plate can not only fix the outer ring of the bearing, but also serve as a radial load application component to achieve high-fidelity testing. The overall structure is designed compactly, is convenient for disassembly and assembly, has strong versatility, can effectively improve the test efficiency and data repeatability, reduce the assembly error and test cost, and has significant practical value in mechanical engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] This specification sets forth the complete and enabling disclosure of the present application, including its best mode, to those skilled in the art. This specification refers to the accompanying drawings, in which:

[0053] Figure 1 A central cross-sectional view of a self-lubricating spherical plain bearing swing test tooling according to an embodiment of the present utility model is shown;

[0054] Figure 2 A front view of the swing mandrel 11 in a self-lubricating spherical plain bearing swing test tooling according to an embodiment of the present utility model is shown;

[0055] Figure 3 A perspective view of a self-lubricating spherical plain bearing swing test tooling according to an embodiment of the present utility model is shown;

[0056] Figure 4 A left view of a self-lubricating spherical plain bearing swing test tooling according to an embodiment of the present utility model is shown;

[0057] Figure 5 A right view of a self-lubricating spherical plain bearing swing test tooling according to an embodiment of the present utility model is shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0058] Reference will now be made in detail to embodiments of the present application, one or more examples of which are illustrated in the figures. Each example is provided by way of explanation of the present application and not limitation thereof. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the scope or spirit thereof. For example, features described or illustrated as part of one embodiment can be used with another embodiment to yield yet another embodiment. As used in this specification, the terms "first", "second", etc. may be used interchangeably to distinguish one component from another and are not intended to denote the position or importance of each component. As used in the specification, unless the context clearly indicates otherwise, the terms "a", "an", "the", and "said" are intended to mean that there is one or more elements. The terms "comprising", "comprises", and "having" are intended to be inclusive and mean that there may be other elements in addition to the listed elements.

[0059] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0060] Figure 1 Central sectional view of a self-lubricating spherical plain bearing swing test tooling showing an embodiment of the present utility model Figure 2 Front view of the swing mandrel 11 in a self-lubricating spherical plain bearing swing test tooling showing an embodiment of the present utility model Figure 3 Stereogram of a self-lubricating spherical plain bearing swing test tooling showing an embodiment of the present utility model Figure 4 Left view of a self-lubricating spherical plain bearing swing test tooling showing an embodiment of the present utility model Figure 5 Right view of a self-lubricating spherical plain bearing swing test tooling showing an embodiment of the present utility model. As Figures 1 - 5 shown, the self-lubricating spherical plain bearing swing test tooling includes:

[0061] A swing mandrel 11 with an integrated stepped shaft design, a support sleeve 5, a left cushion block 4, a right cushion block 8, a left support companion bearing 3, a right support companion bearing 12, a left support seat 2, a right support seat 15, and a loading plate 6;

[0062] Install the right support companion bearing 12 onto the swing mandrel 11. The swing mandrel 11 has an external thread and is clamped and fixed at the right end by a right nut 14 and a second spring washer 13. Then, sequentially place the right cushion block 8. The outer diameter of the self-lubricating spherical plain bearing 7 is installed in the hole of the loading plate 6. Pass the inner hole of the self-lubricating spherical plain bearing 7 through the swing mandrel 11. The right end face of the support sleeve 5 contacts the inner ring end face of the self-lubricating spherical plain bearing 7. The inner hole of the left support companion bearing 3 is sleeved onto the support sleeve 5, the left cushion block 4, and the first spring washer 10. The left nut 9 clamps and fixes the inner ring of the self-lubricating spherical plain bearing 7;

[0063] Install the left support companion bearing 3 into the hole of the left support seat 2, and install the right support companion bearing 12 into the hole of the right support seat 15;

[0064] The left support seat 2 and the right support seat 15 are fixed to the test platform bottom plate 1;

[0065] At least one threaded tie rod 18 passes through the left support seat 2 and the right support seat 15. Both ends of the threaded tie rod 18 are locked left and right by nuts 19 to ensure that the left support seat 2 and the right support seat 15 do not undergo horizontal displacement during loading;

[0066] The right end of the swing mandrel 11 is connected to the drive oil cylinder system.

[0067] The utility model realizes high-strength, stable clamping and reliable support for a self-lubricating spherical plain bearing by adopting a swing mandrel with an integrated stepped shaft design and a reasonable assembly structure of a support sleeve, left and right cushion blocks, left and right support pilot bearings, left and right support seats and a loading plate; external threads are provided at both ends of the swing mandrel, and clamping and fixing of the inner ring of the bearing are realized through nuts and spring washers, and the right end of the mandrel is connected to a driving oil cylinder system to realize periodic swing motion. The left and right support seats are installed on the bottom plate of the test platform by a fixing method and are locked by at least one threaded tie rod and a nut penetrating through both sides thereof to prevent horizontal displacement during the test loading process. The structural design effectively improves the rigidity and load-bearing capacity of the mandrel, avoids the problem of fracture of the swing mandrel under high load and high torque, and at the same time ensures the stability and repeatability of the test, and has the advantages of simple structure, convenient assembly and disassembly, strong adaptability, high reliability and high test efficiency, and solves the technical problems of insufficient strength of the swing mandrel, unstable support and inconvenient replacement in the prior art.

[0068] In one embodiment, the swing mandrel 11 with an integrated stepped shaft design adopts a multi-step design from left to right.

[0069] In one embodiment, the right end of the swing mandrel 11 with an integrated stepped shaft design is a square head structure 114 for connecting to a driving oil cylinder system.

[0070] In one embodiment, a left thread structure 111 is provided at the left end of the swing mandrel 11 with an integrated stepped shaft design for connecting to a left nut 9.

[0071] In one embodiment, a right thread structure 113 is provided at the middle position of the swing mandrel 11 with an integrated stepped shaft design for connecting to a right nut 14.

[0072] In a preferred embodiment, the swing mandrel with an integrated stepped shaft design adopts a multi-step structure design from left to right, and each stepped section is used for the mating installation of different components, which not only improves the assembly accuracy, but also significantly enhances the overall rigidity and load-bearing capacity of the mandrel, and avoids the problem of easy fracture of the mandrel under high load and high torque conditions of a traditional slender structure mandrel. A square head structure is provided at the right end of the mandrel, which is convenient for efficient and stable connection with the driving oil cylinder system, and ensures the reliability of torque transmission and the stability of the test process; a left thread structure is provided at the left end of the mandrel for connecting to a left nut to realize firm clamping of the left support assembly and the inner ring of the self-lubricating spherical plain bearing; and a right thread structure provided on the right side of the middle of the mandrel, through the cooperation of the right nut and the cushion block, realizes symmetrical pressing of the other end of the bearing. The above structural design works synergistically, not only improving the structural strength, test stability and connection reliability of the tooling, but also having good assembly flexibility and adaptability, and effectively solving the technical problems of poor rigidity of the mandrel, inaccurate positioning and loose connection in the prior art.

[0073] In one embodiment, a stepped structure 112 is provided at the middle position of the swing mandrel 11, and the stepped structure is in close contact with the right inner end face of the self-lubricating spherical bearing 7.

[0074] In one embodiment, a support sleeve flange is provided on the right side of the left support test bearing 3, and the end face of the support sleeve flange is in close contact with the left inner end face of the self-lubricating spherical bearing 7 to extend the effective support length of the swing mandrel 11.

[0075] In one embodiment, a stepped structure 112 is provided at the middle position of the swing mandrel 11. This stepped structure serves as a positioning shoulder, and its right end face is in close contact with the right inner end face of the self-lubricating spherical bearing 7, playing a role in axial limit and positioning. In another embodiment, the left support test bearing 3 is a split fixed support structure, and an integrally formed support sleeve flange is provided on its right side. The end face of this flange is in close contact with the left inner end face of the self-lubricating spherical bearing 7 to form an opposing clamping of the inner ring of the bearing, and at the same time, the effective support length of the mandrel is extended by cooperating with the swing mandrel.

[0076] The above two structures cooperate to form a two-way limit and enhanced support structure for the self-lubricating spherical bearing on the swing mandrel. Among them, the stepped structure 112 realizes the positioning and force transmission on the right side of the bearing, and the support sleeve flange realizes the reaction force support on the left side, so that the self-lubricating spherical bearing can be stably clamped at the central position of the mandrel during the test, avoiding force deviation or loosening. At the same time, the load-bearing support rigidity in the middle section of the swing mandrel is effectively improved, ensuring that the swing mandrel is not easily bent or damaged under the test conditions.

[0077] The utility model provides a self-lubricating spherical bearing swing wear test tooling. In this self-lubricating spherical bearing swing wear test tooling, the swing mandrel adopts an integrated stepped shaft design. The swing mandrel has high strength and high rigidity, can bear higher loads and torques. The support sleeve, tapered roller bearing, and spacer block clamp and fix the inner ring of the self-lubricating spherical bearing to the swing mandrel through nuts and spring washers. The tapered roller bearing is used as a support test bearing fixed on the support seat due to its separable and high load-bearing capacity. The support seat is fixed to the test platform bottom plate by inner hexagon screws and T-shaped blocks. The swing mandrel is connected to the driving oil cylinder system, which can realize the low-speed and high-speed periodic swing test of the self-lubricating spherical bearing. The test tooling has a simple structure, is easy to process, and is flexible and convenient for assembly, disassembly, stable and reliable. When changing the test type, only the swing mandrel, support sleeve, loading plate, and spacer block need to be replaced; fewer parts are replaced, improving work efficiency and reducing the cost of the test tooling.

[0078] In one embodiment, at least two parallel T-shaped grooves 23 are provided on the bottom plate 1 of the test platform for realizing the adjustable installation of the assembled components in the horizontal direction. The left support seat 2 and the right support seat 15 are fixed on the bottom plate 1 of the test platform by a plurality of internal screws 20 in cooperation with a plurality of T-shaped blocks 21. The T-shaped blocks 21 are arranged in the T-shaped grooves 23 and can slide in the grooves, so that the left and right support seats can be accurately adjusted left and right along the direction of the T-shaped grooves, thereby meeting the test assembly requirements of self-lubricating spherical bearings with different specifications and different spacings. This structure not only facilitates the adjustment of the axial centering of the swing spindle 11 and the supporting bearing assembly, but also facilitates the quick adaptation when replacing bearings of different models. After the adjustment is completed, the T-shaped blocks are firmly locked by tightening the internal screws 20 to ensure that the support structure has good shear resistance and stability during the loading process.

[0079] In one embodiment, the loading plate 6 is installed outside the swing spindle 11 and the self-lubricating spherical bearing 7, and it is provided with through holes for positioning and installing the self-lubricating spherical bearing 7, so that the outer ring of the bearing is in close contact with the wall of the loading plate hole, realizing the effective limiting and fixing of the outer ring of the bearing. The self-lubricating spherical bearing is reliably installed in the test device through the loading plate to ensure its stable position during the test process.

[0080] In one embodiment, the loading plate 6 not only serves as a limiting support member for bearing installation, but also serves as an external force loading component. The loading device can apply a radial load to the self-lubricating spherical bearing through the loading plate, so that it is in a loaded state during the swing test process, simulating the stress conditions under actual working conditions. The loading plate and other components such as the spindle, cushion block, support bearing, etc. form a complete test force transmission path to ensure uniform load and axial centering, effectively improving the accuracy and repeatability of the test results.

[0081] In one embodiment, a U-shaped groove, a left guide block 22 and a right guide block 16 are arranged at the middle position on the bottom plate 1 of the test platform, and the left guide block 22 and the right guide block 16 are fixed to the U-shaped groove through a bolt structure; a groove corresponding to the left guide block 22 is arranged at the middle position of the left support seat 2; a groove corresponding to the right guide block 16 is arranged at the middle position of the right support seat 15; the left guide block 22 and the right guide block 16 are used to ensure the sliding accuracy of the left support seat 2 and the right support seat 15 respectively. The guide blocks serve as positioning guide rails during the sliding adjustment process of the support seats, and can guide the support seats to slide smoothly along the set direction, such as the horizontal linear direction. When it is necessary to replace the swing spindle and the self-lubricating spherical bearing with different specifications or wheelbases, the operator can first loosen the fixing bolts, and make the left and right support seats slide along the guide blocks to achieve position adjustment. After the adjustment is completed, the bolts are tightened again to realize the repositioning and locking of the support structure.

[0082] In one embodiment, both the left guide block 22 and the right guide block 16 are strip-shaped structures, arranged along the length direction of the U-shaped groove on the test platform bottom plate 1, and are firmly installed in the U-shaped groove through bolt structures. Grooves matching the guide blocks are provided at the bottoms of the left support seat 2 and the right support seat 15, and can smoothly slide along the guide blocks. To further improve the accuracy and repeatability of the support seat position adjustment, scale tables are provided on the upper surfaces of the left guide block 22 and the right guide block 16 for the operator to accurately read when adjusting the support seat position, so as to precisely control the distance and symmetry between the left and right support seats, and ensure that the swing spindle 11 and the self-lubricating spherical plain bearing 7 are in an accurate centering state.

[0083] In one embodiment, the left guide block 22 and the right guide block 16 are strip-shaped structures, and a plurality of through holes evenly distributed along the length direction are provided thereon. The through holes are arranged precisely and uniformly, and are used to correspond to the threaded holes evenly distributed in the U-shaped groove on the test platform bottom plate 1. The through holes on the guide block and the threaded holes in the bottom plate U-shaped groove are sequentially corresponded and locked through bolt structures, so as to realize the firm installation of the left guide block and the right guide block in the U-shaped groove. This structure not only enhances the connection strength between the guide block and the platform, but also makes the installation position of the guide block flexible and adjustable, and can be multi-level positioned and re-arranged according to specific test requirements, improving the versatility and reusability of the system assembly.

[0084] In one embodiment, at least two evenly distributed through holes are provided on both the left guide block 22 and the right guide block 16; at least four threaded holes evenly distributed corresponding to the through holes are provided in the U-shaped groove of the test platform bottom plate 1.

[0085] In one embodiment, the left guide block 22 is fixed to the test platform bottom plate 1 by at least two socket head cap screws 17.

[0086] In one embodiment, the right guide block 16 is fixed to the test platform bottom plate 1 by at least two socket head cap screws 17.

[0087] In one embodiment, it includes: the left support seat 2 and the right support seat 15 are fixed to the test platform bottom plate 1 by 8 internal screws 20 and 8 T-shaped blocks 21.

[0088] In one embodiment, 4 threaded tie rods 18 are provided, and 8 nuts 19 are provided to lock the threaded tie rods 18 left and right, thereby ensuring that the left support seat 2 and the right support seat 15 will not undergo horizontal displacement during loading.

[0089] Advantages and effects of the present utility model: In this self-lubricating spherical plain bearing swing test tooling, due to the integrated stepped shaft design of the swing mandrel, at the right support accompanying test bearing of the swing mandrel, the swing mandrel in contact with the inner hole of the support accompanying test bearing is thickened to the same size as the hole, shortening the length of the working part of the swing mandrel bearing the load. Therefore, the strength and rigidity of the swing mandrel are enhanced, and the requirements for the swing mandrel in the self-lubricating spherical plain bearing swing test, such as high load, high torque, and no fracture of the swing mandrel during the test, are met. Tapered roller bearings are used as the left and right support accompanying test bearings, which are separable and have high load-carrying capacity. The left support seat and the right support seat use 4 tie rods and 8 nuts to lock left and right to ensure that there is no horizontal displacement during loading. Therefore, it has high stability, simple structure, is easy to process, has flexible component replacement, is convenient for disassembly and installation, improves work efficiency, and reduces test costs.

[0090] The description of the present utility model is given for purposes of illustration and description, and is not intended to be exhaustive or to limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the present utility model and its practical application, and to enable those of ordinary skill in the art to understand the present utility model so as to design various embodiments with various modifications suitable for specific purposes.

[0091] Although the embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A self-lubricating spherical plain bearing swing test tooling, characterized in that, Comprising: A swing mandrel (11) with an integrated stepped shaft design, a support sleeve (5), a left spacer block (4), a right spacer block (8), a left nut (9), a first spring washer (10), a left support pilot bearing (3), a right support pilot bearing (12), a left support seat (2), a right support seat (15), a right nut (14), a second spring washer (13), a loading plate (6), a test platform bottom plate (1), at least one threaded tie rod (18), and a nut (19); Wherein, the right support pilot bearing (12) is installed on the swing mandrel (11), the swing mandrel (11) has an external thread, and is clamped and fixed at the right end by the right nut (14) and the second spring washer (13); The right spacer block (8) is placed, the outer diameter of the self-lubricating spherical plain bearing (7) is installed in the hole of the loading plate (6), the inner hole of the self-lubricating spherical plain bearing (7) passes through the swing mandrel (11), the right end face of the support sleeve (5) contacts the inner ring end face of the self-lubricating spherical plain bearing (7), and the inner hole of the left support pilot bearing (3) sleeves the support sleeve (5), the left spacer block (4), the first spring washer (10), and the left nut (9) clamps and fixes the inner ring of the self-lubricating spherical plain bearing (7); The left support pilot bearing (3) is installed in the hole of the left support seat (2), and the right support pilot bearing (12) is installed in the hole of the right support seat (15); The left support seat (2) and the right support seat (15) are fixed to the test platform bottom plate (1); At least one threaded tie rod (18) penetrates through the left support seat (2) and the right support seat (15), and both ends of the at least one threaded tie rod (18) are locked left and right by two of the nuts (19) to ensure that the left support seat (2) and the right support seat (15) will not have horizontal displacement during loading; The right end of the swing mandrel (11) is connected to the drive oil cylinder system.

2. The self-lubricating spherical plain bearing swing test tooling according to claim 1, wherein Comprising: The swing mandrel (11) with an integrated stepped shaft design adopts a multi-step design from left to right; And / or The right end of the swing mandrel (11) with an integrated stepped shaft design is a square head structure (114) for connecting to the drive oil cylinder system; And / or The left end of the swing mandrel (11) with an integrated stepped shaft design is provided with a left thread structure (111) for connecting the left nut (9); And / or The middle position of the swing mandrel (11) with an integrated stepped shaft design is provided with a right thread structure (113) for connecting the right nut (14).

3. The self-lubricating spherical plain bearing swing test tooling according to claim 1 or 2, wherein Comprising: A stepped structure (112) is provided at the middle position of the swing mandrel (11), and the stepped structure is close to the right inner end face of the self-lubricating spherical plain bearing (7); And / or A support sleeve flange is provided on the right side of the left support pilot bearing (3), and the end of the support sleeve flange is close to the left inner end face of the self-lubricating spherical plain bearing (7) for extending the effective support length of the swing mandrel (11).

4. The self-lubricating spherical plain bearing swing test tooling according to claim 1, characterized in that Comprising: The test platform bottom plate (1) is provided with at least two T-shaped grooves (23); The left support base (2) and the right support base (15) are fixed to the test platform bottom plate (1) through internal screws (20) and T-shaped blocks (21), and the T-shaped blocks (21) can slide along the T-shaped grooves (23).

5. The self-lubricating spherical plain bearing swing test tooling according to claim 1, characterized in that, Including: The loading plate (6) is installed outside the swing spindle (11) and the self-lubricating spherical plain bearing (7) for fixing the self-lubricating spherical plain bearing (7); and / or The loading plate (6) is used as an external force loading component to apply a radial load to the self-lubricating spherical plain bearing (7).

6. The self-lubricating spherical plain bearing swing test tooling according to claim 1, characterized in that Including: A U-shaped groove, a left guide block (22) and a right guide block (16) are arranged at the middle position on the test platform bottom plate (1), and the left guide block (22) and the right guide block (16) are fixed to the U-shaped groove through a bolt structure; A groove corresponding to the left guide block (22) is arranged at the middle position of the left support base (2); A groove corresponding to the right guide block (16) is arranged at the middle position of the right support base (15); The left guide block (22) and the right guide block (16) are used to ensure the sliding accuracy of the left support base (2) and the right support base (15) respectively.

7. The self-lubricating spherical plain bearing swing test tooling according to claim 6, characterized in that Including: The left guide block (22) and the right guide block (16) are strip-shaped, A scale is arranged on the left guide block (22) and the right guide block (16) for measuring the positions of the left support base (2) and the right support base (15) to determine the sliding accuracy.

8. The self-lubricating spherical plain bearing swing test tooling according to claim 6, characterized in that, Including: Uniformly distributed through holes are arranged on the left guide block (22) and the right guide block (16), Uniformly distributed threaded holes corresponding to the through holes are arranged in the U-shaped groove of the test platform bottom plate (1), The left guide block (22) and the right guide block (16) are fixed to the U-shaped groove through a bolt structure and locked with the test platform bottom plate (1).

9. The self-lubricating spherical plain bearing swing test tooling according to claim 8, wherein, Including: At least two uniformly distributed through holes are arranged on both the left guide block (22) and the right guide block (16); At least four uniformly distributed threaded holes corresponding to the through holes are arranged in the U-shaped groove of the test platform bottom plate (1); and / or The left guide block (22) is fixed to the test platform bottom plate (1) by at least two socket head cap screws (17); and / or The right guide block (16) is fixed to the test platform bottom plate (1) by at least two socket head cap screws (17).

10. The self-lubricating spherical plain bearing swing test tooling according to claim 4, characterized in that, Including: The left support base (2) and the right support base (15) are fixed to the test platform bottom plate (1) through 8 internal screws (20) and 8 T-shaped blocks (21), and / or 4 threaded tie rods (18) are arranged, and 8 nuts (19) are arranged to lock the threaded tie rods (18) left and right to ensure that the left support base (2) and the right support base (15) will not have horizontal displacement during loading.

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