A fixing structure for a dynamic bearing fault experiment device

Abstract

This utility model discloses a fixing structure for a dynamic bearing failure experimental device, relating to the field of fixing structure technology. The utility model includes a bearing housing as a support device and a mounting mechanism mounted on the bearing housing. The mounting mechanism includes a fixing component installed inside the bearing housing cavity and a reinforcing component mounted on the fixing component. The fixing component includes a worm gear rotatably connected inside the bearing housing cavity. Specifically, by setting up the fixing component, the bearing is placed inside the bearing housing. Turning a knob clockwise drives the worm gear to rotate, synchronously driving the worm wheel to rotate. Multiple arc-shaped pressing blocks move with the worm wheel and press the arc-shaped pushing blocks, causing them to drive a push rod to slide within a limiting hole. When the push rod moves, it contacts the outer ring of the bearing through a pressure roller. Continuous rotation of the knob applies pressure to achieve clamping and fixing. This structure is adaptable to various outer diameter bearings, reducing experimental costs, improving efficiency, and increasing the versatility of the device.

Description

Technical Field

[0001] This utility model belongs to the field of fixed structure technology, and in particular relates to a fixed structure for a dynamic bearing failure test device. Background Technology

[0002] In the field of dynamic bearing fault diagnosis and performance testing experiments, the stability of bearing fixation directly determines the accuracy, reliability, and safety of experimental data and the experimental process. It is one of the most important core links in the design of experimental equipment. As a key transmission component in rotating machinery, the monitoring of the operating status and fault analysis of dynamic bearings require the use of specialized experimental equipment to simulate actual working conditions. During the experiment, the bearing must be firmly and accurately positioned and fixed to ensure that the bearing will not shift due to external forces or its own rotation, thereby ensuring the smooth progress of experiments such as fault excitation signal acquisition and vibration characteristic analysis.

[0003] Currently, most bearing fixing structures in existing dynamic bearing failure test devices adopt special fixture designs, that is, custom-made clamping components to match bearings with specific outer ring diameter specifications. This type of fixing method has many limitations in practical applications. Since the outer ring diameter specifications of dynamic bearings vary greatly for different types and application scenarios, if multiple specifications of bearings need to be tested during the experiment, it is necessary to design and replace the corresponding fixing fixtures for each specification. This not only significantly increases the research and development and manufacturing costs of the test device, but also increases the difficulty of storing and managing the fixtures. Therefore, a fixing structure for dynamic bearing failure test devices is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a fixing structure for a dynamic bearing failure testing device. Specifically, by setting a fixing component, the bearing is placed inside a bearing housing. Turning a knob clockwise drives the worm gear to rotate, simultaneously rotating the worm wheel. Multiple arc-shaped pressing blocks move with the worm wheel and press against the arc-shaped pushing blocks, causing the push rod to slide within the limiting hole. When the push rod moves, it contacts the outer ring of the bearing through a pressure roller. Continuous rotation of the knob applies pressure to achieve clamping and fixing. This solves the problem that current dynamic bearing failure testing devices often use dedicated clamp designs, i.e., custom-made clamping components for bearings with specific outer ring diameters. Such fixing methods have many limitations in practical applications. Because the outer ring diameters of different types and application scenarios of dynamic bearings vary greatly, if multiple bearing specifications need to be tested during the experiment, a separate fixing clamp must be designed and replaced for each specification. This not only significantly increases the research and development and manufacturing costs of the testing device but also increases the difficulty of storing and managing the clamps.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a fixed structure for a dynamic bearing failure testing device, including a bearing housing and a mounting mechanism. The mounting mechanism is mounted on the bearing housing and includes a fixing component installed inside the bearing housing cavity and a reinforcing component installed on the fixing component. The fixing component includes a worm gear rotatably connected inside the bearing housing cavity, the worm gear passing through the bearing housing and extending to the top. A worm wheel meshing with the worm gear is disposed inside the bearing housing cavity. A plurality of arc-shaped extrusion blocks are fixedly connected to the inner ring of the worm wheel. The arc surfaces of the arc-shaped extrusion blocks away from the worm wheel are respectively in contact with arc-shaped push blocks. Push rods are fixedly connected to the sides of the arc-shaped push blocks away from the arc-shaped extrusion blocks. Pressure rollers are installed on the sides of the push rods away from the arc-shaped push blocks. Reset components are installed on the push rods. The front of the outer rings of the arc-shaped extrusion blocks is welded to the inner wall of the worm wheel, and the back of the outer rings of the arc-shaped extrusion blocks does not contact the inner rings of the arc-shaped extrusion blocks.

[0007] Furthermore, an oil inlet is installed on the top of the bearing housing, and a knob is provided on the right side of the top of the bearing housing. The center of the knob is fixedly connected to the top of the outer surface of the worm gear. A cavity is opened inside the bearing housing, and the oil inlet is used to add lubricant to the inside of the bearing housing.

[0008] Furthermore, a limiting ring is fixedly connected to the back side of the inner wall of the cavity. The outer ring of the limiting ring is rotatably connected to the back side of the inner ring of the worm gear. The inner ring of the limiting ring is rotatably connected to the back side of the outer rings of several arc-shaped extrusion blocks. The limiting ring provides limiting support for the worm gear.

[0009] Furthermore, the inner ring of the cavity is provided with a number of limiting holes, and the interior of each of the limiting holes is slidably connected to the outer surface of the push rod. The limiting holes limit and guide the movement trajectory of the push rod.

[0010] Furthermore, the number of the reinforcing components is several groups, and the components included in the several groups of reinforcing components are the same. The reinforcing component includes a support frame fixedly connected to the outside of the push rod. A limit rod is fixedly connected to the inside of the support frame. The limit rod is disposed inside the push rod on the side away from the arc-shaped push block. The center of the outer surface of the limit rod is rotatably connected to the center of the inner surface of the pressure roller. The outer surface of the limit rod is fixedly connected to the inside of the push rod.

[0011] Furthermore, two fixed brackets are slidably connected to the outer surface of the limiting rod. The two fixed brackets are threaded with a bidirectional threaded rod on the side away from the limiting rod at their temporal portion. The outer surface of the bidirectional threaded rod is rotatably connected to the inner edge of the support frame. The bidirectional threaded rod passes through the support frame and extends to the front. A cross nut is fixedly connected to the front of the limiting rod. The two fixed brackets are each connected to a pressure roller two via a pin on the side near the first pressure roller. The two pressure roller two are perpendicular to the first pressure roller.

[0012] Furthermore, the reset component includes several springs sleeved on the outside of the push rod. The ends of the several springs that are far apart from each other are respectively fixedly connected to the side of the arc-shaped push block near the limiting ring. The ends of the several springs that are far away from the arc-shaped push block are fixedly connected to the outer ring of the limiting ring. The springs provide kinetic energy output for the reset of the arc-shaped push block and the push rod.

[0013] This utility model has the following beneficial effects:

[0014] 1. This utility model, by setting a fixing component, specifically places the bearing in the bearing seat, and drives the worm gear to rotate by turning the knob clockwise, which in turn drives the worm wheel to rotate. Multiple arc-shaped extrusion blocks move with the worm wheel and extrude arc-shaped push blocks, causing the push rod to slide in the limiting hole. When the push rod moves, it contacts the outer ring of the bearing through the pressure roller. Continuous rotation of the knob can apply pressure to achieve clamping and fixing. This structure is compatible with various outer diameter bearings, reducing experimental costs, improving efficiency and device versatility.

[0015] 2. This utility model incorporates a reinforcement component. Specifically, after multiple pressure rollers clamp and fix the bearing, the operator uses a cross-shaped cutter to rotate the cross nut clockwise, driving the bidirectional threaded rod to rotate. The bidirectional threaded rod causes the two fixed brackets on both sides to slide towards each other along the surface of the limiting rod, simultaneously driving the two pressure rollers to approach and clamp the side of the bearing. This effectively prevents the bearing from shifting or deviating during the experiment, enhances safety and rotational stability, and significantly improves the reliability of the experimental results.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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 drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2This is a schematic diagram of the cross-sectional structure of the bearing housing of this utility model;

[0020] Figure 3 This is an exploded view of the fixing component of this utility model;

[0021] Figure 4 This is a schematic diagram of the overall structure of the pressure roller of this utility model;

[0022] Figure 5 This is a schematic diagram of the overall structure of the fixed bracket of this utility model;

[0023] Figure 6 This is a schematic diagram of the overall structure of the limiting hole of this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 111. Bearing housing; 112. Oil inlet; 113. Cavity; 114. Limiting ring; 2. Mounting mechanism; 21. Fixing assembly; 211. Worm gear; 212. Knob; 213. Worm wheel; 214. Arc-shaped extrusion block; 215. Arc-shaped push block; 216. Push rod; 217. Spring; 218. Pressure roller one; 219. Limiting hole; 22. Reinforcing assembly; 221. Support frame; 222. Limiting rod; 223. Two-way threaded rod; 224. Pressure roller two; 225. Fixing bracket; 226. Cross nut. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0027] Please see Figures 1-6As shown, this utility model is a fixing structure for a dynamic bearing failure test device, including a bearing housing 111 as a bearing support device, and a mounting mechanism 2. The mounting mechanism 2 is mounted on the bearing housing 111. The mounting mechanism 2 includes a fixing component 21, which is installed inside the cavity of the bearing housing 111, and a reinforcing component 22, which is mounted on the fixing component 21. The fixing component 21 includes a worm gear 211 rotatably connected to the cavity of the bearing housing 111. The worm gear 211 passes through the bearing housing 111 and extends to the top. A worm wheel 213 is provided inside the cavity of the bearing housing 111 and meshes with the worm gear 211. The inner ring of the worm wheel 213 is fixed. A plurality of arc-shaped pressing blocks 214 are connected. The arc surface of each arc-shaped pressing block 214, away from the worm gear 213, contacts an arc-shaped pushing block 215. A push rod 216 is fixedly connected to the side of each arc-shaped pushing block 215 away from the arc-shaped pressing block 214. A pressure roller 218 is installed on the side of each push rod 216 away from the arc-shaped pushing block 215. A reset component is installed on the push rod 216. The front of the outer ring of each arc-shaped pressing block 214 is welded to the inner wall of the worm gear 213, while the back of the outer ring of each arc-shaped pressing block 214 does not contact the inner ring of the arc-shaped pressing block 214. An oil inlet 112 is installed on the top of the bearing housing 111. A knob 212 is located on the top right side of the bearing seat 111. The center of the knob 212 is fixedly connected to the top of the outer surface of the worm gear 211. A cavity 113 is formed inside the bearing seat 111. The oil inlet 112 is used to add lubricant to the bearing seat 111. A limit ring 114 is fixedly connected to the back of the inner wall of the cavity 113. The outer ring of the limit ring 114 is rotatably connected to the back of the inner ring of the worm gear 213. The inner ring of the limit ring 114 is rotatably connected to the back of the outer ring of several arc-shaped extrusion blocks 214. The limit ring 114 provides limiting support for the worm gear 213. Several limit holes 219 are formed in the inner ring of the cavity 113. The internal components are slidably connected to the outer surface of the push rod 216. The limiting hole 219 limits and guides the movement trajectory of the push rod 216. The bearing is placed in the bearing seat 111. Turning the knob 212 clockwise drives the worm gear 211 to rotate, which in turn drives the worm wheel 213 to rotate. Multiple arc-shaped pressing blocks 214 move with the worm wheel 213 and press the arc-shaped pushing block 215, causing the push rod 216 to slide in the limiting hole 219. When the push rod 216 moves, it contacts the outer ring of the bearing through the pressure roller 218. Continuously turning the knob 212 can apply pressure to achieve clamping and fixing. This structure is compatible with various outer diameter bearings, reducing experimental costs, improving efficiency and device versatility.

[0028] The reinforcement components 22 are in several groups, and the components in each group are identical. Each reinforcement component 22 includes a support frame 221 fixedly connected to the outside of the push rod 216. A limit rod 222 is fixedly connected to the inside of the support frame 221. The limit rod 222 passes through the push rod 216 and is disposed inside the side away from the arc-shaped push block 215. The center of the outer surface of the limit rod 222 is rotatably connected to the center of the inner surface of the pressure roller 218. The outer surface of the limit rod 222 is fixedly connected to the inside of the push rod 216. Two fixed brackets 225 are slidably connected to the outer surface of the limit rod 222. A bidirectional threaded rod 223 is threadedly connected to the side of the two fixed brackets 225 away from the limit rod 222. The outer surface of the bidirectional threaded rod 223 is rotatably connected to the inner edge of the support frame 221. The bidirectional threaded rod 223 penetrates the support frame 221 and extends to the front. The limit rod 222 is fixedly connected to the front with a cross nut 226. The two fixed brackets 225 are connected to the pressure roller 224 on the side near the pressure roller 1 218 through a pin. The two pressure rollers 224 are set perpendicular to the pressure roller 1 218. After the multiple pressure rollers 1 218 clamp and fix the bearing, the operator uses a cross-shaped cutter to rotate the cross nut 226 clockwise to drive the bidirectional threaded rod 223 to rotate. The bidirectional threaded rod 223 drives the two fixed brackets 225 on both sides to slide towards each other along the surface of the limit rod 222, and simultaneously drives the two pressure rollers 224 to approach and clamp the side of the bearing, effectively preventing the bearing from shifting or deviating during the experiment, enhancing safety and rotational stability, and significantly improving the reliability of the experimental results.

[0029] The reset component includes several springs 217 sleeved on the outside of the push rod 216. The ends of the several springs 217 that are far apart from each other are fixedly connected to the side of the arc-shaped push block 215 near the limiting ring 114. The ends of the several springs 217 that are far away from the arc-shaped push block 215 are fixedly connected to the outer ring of the limiting ring 114. The springs 217 provide kinetic energy output for the reset of the arc-shaped push block 215 and the push rod 216.

[0030] A specific application of this embodiment is as follows: In use, the bearing is first placed inside the bearing seat 111, and then the knob 212 is turned clockwise to drive the worm gear 211 to rotate. During the rotation of the worm gear 211, the worm wheel 213 will rotate synchronously. At this time, the multiple arc-shaped extrusion blocks 214 will also move due to the rotation of the worm wheel 213. Simultaneously, during the movement of the multiple arc-shaped extrusion blocks 214, they will compress the arc-shaped push block 215 to move. During the movement of the arc-shaped push block 215, the push rod 216 will slide inside the limiting hole 219. The limiting hole 219 provides a certain degree of limitation for the movement trajectory of the push rod 216. At the same time, the limiting ring 114 provides a certain degree of support for the movement of the worm wheel 213. During the movement of the arc-shaped push block 215, the spring 217 is compressed. The spring 217, limited by the outer ring of the limiting ring 114, contracts and stores energy. The spring 217 provides kinetic energy output for the subsequent reset of the push rod 216. When the push rod 216 moves, it drives the pressure roller 218 to contact the outer ring of the bearing. By continuing to rotate the knob 212, the pressure roller 218 applies pressure to the bearing, thereby clamping and fixing the bearing. Moreover, it can clamp and fix bearings with various outer ring diameters, so that the experimental device can be adapted to various specifications of bearings. There is no need to design an experimental device for each specification of bearing, which reduces the experimental cost, improves the utilization rate of the device, reduces the experimental preparation time, and improves the experimental efficiency.

[0031] After the bearing is clamped and fixed by multiple pressure rollers 218, the operator uses a cross-shaped cutter to rotate the cross nut 226 clockwise, causing the double-threaded rod 223 to rotate. During the rotation of the double-threaded rod 223, the two fixed supports 225 move closer to each other. At the same time, during the mutual movement of the two fixed supports 225, their interiors slide on the outer surface of the limiting rod 222. The limiting rod 222 provides a certain degree of limitation and guidance for the movement trajectory of the fixed supports 225. During the mutual movement of the two fixed supports 225, the two pressure rollers 224 move synchronously. During the mutual movement of the two pressure rollers 224, the side of the bearing is clamped and fixed, reducing the possibility of the bearing moving or shifting during the experimental rotation, thus improving the safety of the experiment. At the same time, the stable rotation of the bearing also greatly improves the reliability of the experimental results.

[0032] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A fixing structure for a dynamic bearing failure test apparatus, comprising a bearing housing (111) for a load-bearing device, characterized in that, Also includes: Mounting mechanism (2), which is mounted on bearing housing (111); The mounting mechanism (2) includes a fixing component (21) which is installed inside the cavity of the bearing housing (111); A reinforcement component (22) is mounted on a fixing component (21); The fixing component (21) includes a worm gear (211) rotatably connected to the cavity of the bearing seat (111). The worm gear (211) passes through the bearing seat (111) and extends to the top. A worm wheel (213) meshes with the worm gear (211) inside the cavity of the bearing seat (111). A plurality of arc-shaped pressing blocks (214) are fixedly connected to the inner ring of the worm wheel (213). The arc surface of the plurality of arc-shaped pressing blocks (214) away from the worm wheel (213) respectively contacts an arc-shaped pushing block (215). A push rod (216) is fixedly connected to the side of the plurality of arc-shaped pushing blocks (215) away from the arc-shaped pressing blocks (214). A pressure roller (218) is installed on the side of the plurality of push rods (216) away from the arc-shaped pushing blocks (215). A reset component is installed on the push rod (216). Among them, the front of the outer ring of several arc-shaped extrusion blocks (214) is welded to the inner wall of the worm gear (213), and the back of the outer ring of several arc-shaped extrusion blocks (214) does not contact the inner ring of the arc-shaped extrusion blocks (214).

2. The fixing structure for a dynamic bearing failure test device according to claim 1, characterized in that, The bearing housing (111) is equipped with an oil inlet (112) on the top. A knob (212) is provided on the right side of the top of the bearing housing (111). The center of the knob (212) is fixedly connected to the top of the outer surface of the worm (211). A cavity (113) is opened inside the bearing housing (111). The oil inlet (112) is used to add lubricant to the inside of the bearing housing (111).

3. The fixing structure for a dynamic bearing failure test device according to claim 2, characterized in that, A limiting ring (114) is fixedly connected to the back side of the inner wall of the cavity (113). The outer ring of the limiting ring (114) is rotatably connected to the back side of the inner ring of the worm gear (213). The inner ring of the limiting ring (114) is rotatably connected to the back side of the outer ring of several arc-shaped extrusion blocks (214). Among them, the limiting ring (114) provides limiting support for the worm gear (213).

4. The fixing structure for a dynamic bearing failure test device according to claim 3, characterized in that, The cavity (113) has a plurality of limiting holes (219) in the inner ring, and the interior of the plurality of limiting holes (219) is slidably connected to the outer surface of the push rod (216); The limiting hole (219) limits and guides the movement trajectory of the push rod (216).

5. The fixing structure for a dynamic bearing failure test device according to claim 1, characterized in that, The number of the reinforcement components (22) is several groups, and the components included in the several groups of reinforcement components (22) are the same. The reinforcement component (22) includes a support frame (221) fixedly connected to the outside of the push rod (216). A limit rod (222) is fixedly connected to the inside of the support frame (221). The limit rod (222) is set inside the push rod (216) on the side away from the arc surface push block (215). The center of the outer surface of the limit rod (222) is rotatably connected to the center of the inside of the pressure roller (218). The outer surface of the limiting rod (222) is fixedly connected to the inside of the push rod (216).

6. The fixing structure for a dynamic bearing failure test device according to claim 5, characterized in that, The outer surface of the limiting rod (222) is slidably connected to two fixed brackets (225). The side of the two fixed brackets (225) away from the limiting rod (222) is threaded with a bidirectional threaded rod (223). The outer surface of the bidirectional threaded rod (223) is rotatably connected to the inside edge of the support frame (221). The bidirectional threaded rod (223) passes through the support frame (221) and extends to the front. The front of the limiting rod (222) is fixedly connected with a cross nut (226). The side of the two fixed brackets (225) near the first pressure roller (218) is connected to the second pressure roller (224) by a pin. Among them, the two pressure rollers 224 and pressure roller 1 (218) are set vertically.

7. The fixing structure for a dynamic bearing failure test device according to claim 1, characterized in that, The reset component includes a plurality of springs (217) sleeved on the outside of the push rod (216). The ends of the plurality of springs (217) that are far apart from each other are respectively fixedly connected to the side of the arc-shaped push block (215) near the limiting ring (114). The ends of the plurality of springs (217) that are far away from the arc-shaped push block (215) are fixedly connected to the outer ring of the limiting ring (114). The spring (217) provides kinetic energy output for the reset of the arc-shaped push block (215) and the push rod (216).

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