Bearing radial loading test device
By improving the upper clamping block as a split structure, the upper clamping and radial pressure of the bearing are achieved by using the combination of the counterweight block and the side block, and the separation of the upper and lower clamping blocks is achieved through the same driving device, solving the problem of independent cost in the existing test device, and achieving the effect of cost reduction and efficiency improvement.
Patent Information
- Application Number
- CN202422166396.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-04
AI Technical Summary
In the existing bearing radial loading test device, the driving devices that apply pressure and remove clamps are independent of each other, resulting in higher system costs.
A bearing radial loading test device is designed. By improving the upper clamping block as a split structure, the upper clamping of the bearing is achieved by using the cooperation of the counterweight block and the side block, and the longitudinal position change between the counterweight block and the side block is generated through the connecting rod and the through hole to realize radial pressure. At the same time, the upper and lower clamping blocks are separated by the lift of the counterweight block. The pressure application and separation operation adopt the same driving device.
The production cost of the device is reduced, the number of drive devices is reduced, the control system is simplified, and the efficiency and economicality of the test device is improved.
Smart Images
Figure CN223021533U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of bearing test devices, in particular to a bearing radial loading test device. Background Art
[0002] The main purpose of the radial loading test of bearings is to evaluate the stiffness performance of bearings under radial load. Through the radial loading test, we can understand the deformation of the bearing when it is subjected to force, and then evaluate the reliability and stability of the bearing in actual work. In addition, the test results can also provide a basis for the design and optimization of bearings to ensure that the performance of bearings in mechanical equipment meets the expected standards. This test is of great significance for improving the quality and reliability of bearings, especially in application scenarios that require high precision and high reliability. During the test, by applying radial loads and observing the degree of deformation of the bearings, the radial stiffness of the bearings, that is, the ability of the bearings to resist radial deformation, can be quantitatively analyzed. This indicator is directly related to the stability and durability of the bearing when subjected to external pressure. Therefore, the radial loading test is an indispensable part of the bearing design and manufacturing process, which helps to ensure that the bearings can maintain good performance in actual applications.
[0003] The radial loading test of bearings mainly includes dynamic loading and static loading. During the static loading test, a special loading test device is required. The common method is to clamp the upright bearing with upper and lower clamps. One is to observe the parameter changes of the bearing under its own weight, and the other is to observe the parameter changes after the pressure after applying radial force. The clamps used for large bearings are large in size, and it is often necessary to use mechanical drive to connect or disengage the upper and lower clamps. At present, the device requires at least a drive device for applying pressure and a drive device for removing the clamp. There are many drive devices, and the control system needs to control different drive devices separately. The system cost is also high, and the overall production cost of the device is high. Utility Model Content
[0004] The utility model aims to provide a bearing radial loading test device to solve the problem that the driving devices for applying pressure and removing the clamping parts of the existing test device are independent of each other and the cost is relatively high.
[0005] The embodiments of the present invention are implemented by the following technical solutions:
[0006] A bearing radial loading test device, comprising: a lower clamping block, an upper clamping block, a driving device and a mounting frame. After the upper clamping block and the lower clamping block are aligned, a cylindrical space for accommodating a bearing is formed. The upper clamping block includes: a counterweight block and side blocks. Connecting rods are provided on both sides of the counterweight block; through holes for the connecting rods to pass through are provided on the side blocks, and each connecting rod is configured with one of the side blocks; the driving device is connected to the counterweight block and is used to drive the counterweight block to move longitudinally and adjust the counterweight; the mounting frame is used to mount the driving device. A slide rail for cooperating with the connecting rod is provided on the side plate of the mounting frame. One end of the connecting rod away from the counterweight block is slidably connected to the slide rail, and the length of the slide rail is greater than half of the outer diameter of the bearing; when the clamping wall of the counterweight block and the clamping wall of the side block are on an arc surface, a gap is left between the bottom wall of the connecting rod and the through hole.
[0007] Preferably, arc-shaped plates for mounting the bearing are provided on the clamping walls of the lower clamping block and the side blocks. Screw holes are provided on the arc-shaped plates, and a passage for the counterweight block to pass through is formed between the arc-shaped plates of the two side blocks.
[0008] Preferably, guide rods are provided on the bottom walls of the side blocks, and guide grooves for cooperating with the guide rods are provided on the lower clamping block.
[0009] Preferably, a gap is left between the inserted end of the guide rod and the side wall of the notch of the guide groove.
[0010] Preferably, the test device further includes: a bottom plate. The lower clamping block is connected to the bottom plate. A chute is provided on the bottom plate, and the side plate of the mounting frame is slidably connected to the chute. During the sliding process of the mounting frame, there is at least one state in which the upper clamping block is completely separated from the bearing.
[0011] Preferably, a light emitting device is provided on the bottom wall of the guide rod, a light receiving device is provided on the bottom of the guide groove, and the length of the guide rod is less than the depth of the guide groove.
[0012] Preferably, the lower clamping block is slidably connected to the bottom plate. The lower clamping block includes: a concave block, a guide block and a placement block. The concave wall of the concave block is an arc wall for abutting against the outer wall of the bearing; the guide block is connected to the concave block, and the top wall of the guide block is an inclined wall. The guide block is located on the opposite side of the bearing installation side of the concave block; the placement block is connected to one end of the guide block away from the concave block, and the top wall of the placement block is a horizontal wall. The height of the placement block is the same as the height of the guide block.
[0013] Preferably, an upper connecting plate is provided on the side block, a lower connecting plate is provided on the lower clamping block, and the upper connecting plate and the lower connecting plate are connected by bolts.
[0014] The utility model has at least the following beneficial effects:
[0015] The upper clamping block of the utility model is improved into a split structure. The upper clamping of the bearing is realized through the cooperation of the counterweight block and the side block. Then, through holes are arranged on the side block. By using the through holes and the connecting rod, the counterweight block and the side block can not only generate a longitudinal position to realize the radial pressure on the bearing, but also drive the side block to move upward by the rising of the counterweight block, thereby realizing the separation of the upper and lower clamping blocks. The pressing operation and the separation operation adopt the same driving device, reducing the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.
[0017] Figure 1 Structural schematic diagram of the bearing radial loading test device;
[0018] Figure 2 First state schematic diagram of the counterweight block;
[0019] Figure 3 Second state schematic diagram of the counterweight block;
[0020] Figure 4 Third state schematic diagram of the counterweight block;
[0021] Figure 5 For Figure 1 Detail drawing of part A in;
[0022] Figure 6 Structural schematic diagram of the improved guide rod;
[0023] Figure 7 Structural schematic diagram of the lower clamping block;
[0024] Figure 8 State diagram during the hoisting of the bearing;
[0025] Reference numerals: 1 - lower clamping block, 11 - guide groove, 111 - light receiving device, 12 - concave block, 13 - guide block, 14 - placing block, 2 - upper clamping block, 21 - counterweight block, 211 - connecting rod, 22 - side block, 221 - through hole, 3 - driving device, 4 - mounting bracket, 41 - side plate, 411 - slide rail, 5 - arc plate, 51 - screw hole, 6 - guide rod, 61 - light emitting device, 7 - bottom plate, 71 - chute, 8 - upper connecting plate, 9 - lower connecting plate, 10 - bearing. DETAILED DESCRIPTION
[0026] In order to make the purpose, method scheme and advantages of the embodiments of the utility model clearer, the method scheme in the embodiments of the utility model is clearly and completely described. Obviously, the described embodiments are part of the embodiments of the utility model, not all embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0027] Example 1: Figures 1-3 As shown, a radial loading test device for a bearing 10 comprises: a lower clamping block 1, an upper clamping block 2, a driving device 3 and a mounting frame 4, wherein the upper clamping block 2 and the lower clamping block 1 are matched to form a cylindrical space for accommodating the bearing 10, and the upper clamping block 2 comprises: a counterweight block 21 and a side block 22, wherein connecting rods 211 are provided on both sides of the counterweight block 21; the side block 22 is provided with a through hole 221 for the connecting rod 211 to pass through, and each connecting rod 211 is configured with a side block 22; the driving device 3 is connected to the counterweight block 21 , used to drive the counterweight block 21 to move longitudinally and adjust the counterweight; the mounting frame 4 is used to install the driving device 3, and the side plate 41 of the mounting frame 4 is provided with a slide rail 411 that cooperates with the connecting rod 211, and the end of the connecting rod 211 away from the counterweight block 21 is slidably connected to the slide rail 411, and the length of the slide rail 411 is greater than half of the outer diameter of the bearing 10; when the clamping wall of the counterweight block 21 and the clamping wall of the side block 22 are on the same arc surface, a gap is left between the bottom wall of the connecting rod 211 and the through hole 221.
[0028] In the specific implementation process, Figure 1 As shown, the clamping surfaces of the upper clamping block 2 and the lower clamping block 1 are arc surfaces that match the bearing 10, and the mounting frame 4 can be as shown in FIG. Figure 1 As shown, side plates 41 are provided on both sides of the top plate. The sliding connection structure is a prior art, which is mostly realized by the cooperation of the slide rail 411 and the slider. It is a prior art and will not be described in detail in this embodiment. The driving device 3 can adopt a telescopic cylinder or a telescopic oil cylinder. The driving mechanism can drive the counterweight block 21 to move up and down to achieve pressure and separation of the upper clamping block 2. The specific operation can be referred to as follows:
[0029] In the initial state, the upper clamping block 2 is separated from the lower clamping block 1. After the bearing 10 is moved to the installation position of the lower clamping block 1 by hoisting, the screw hole 51 on the bearing 10 is used to connect it to the lower clamping block 1. At this time, the hoisting device does not separate from the bearing 10, which improves the position stability of the bearing 10 when it is installed on the lower clamping block 1. At this time, the state of the upper clamping block 2 is as follows: Figure 3As shown, the upper end of the connecting rod 211 abuts against the upper side wall of the through hole 221. Then, the driving device 3 is started, causing the counterweight 21 to move downward and driving the side block 22 to move downward until the clamping wall of the upper clamping block 2 abuts against the bearing 10 as shown in Figure 1 or as shown in Figure 2 . Finally, it is connected to the upper clamping block 2 through the screw hole 51 on the bearing 10 to realize the clamping installation of the bearing 10.
[0030] During the test, pressure can be applied to the counterweight 21 through the driving device 3, and the magnitude of the pressure can be adjusted according to the test requirements. To prevent the connecting rod 211 from abutting against the lower side wall of the through hole 221 during the pressure application process, resulting in the pressure not being fully applied to the bearing 10, this embodiment also defines that as shown in Figure 2 , there is a gap between the connecting rod 211 and the lower side wall of the through hole 221 in the pressure application state. Since the slide rail 411 of the side plate 41 needs to satisfy both the abutment of the upper clamping block 2 and the bearing 10 and the removal of the upper clamping block 2, this embodiment also defines that the length of the slide rail 411 is greater than half of the outer diameter of the bearing 10 to drive the movement range of the upper clamping block 2.
[0031] Embodiment 2: To ensure the correct measurement of the deformation parameters of the bearing 10, as shown in Figures 2-4 , an improvement is made on the basis of Embodiment 1. In this embodiment, arc-shaped plates 5 for installing the bearing 10 are provided on the clamping walls of the lower clamping block 1 and the side block 22, and screw holes 51 are provided on the arc-shaped plates 5. A passage for the counterweight 21 to pass through is formed between the arc-shaped plates 5 of the two side blocks 22.
[0032] During the specific implementation process, the arc-shaped plate 5 of the lower clamp directly cooperates with the screw hole 51 of the bearing 10 to realize the installation of the bearing 10. For the upper clamping block 2, only the arc-shaped plate 5 is provided on the side block 22. If the arc-shaped plate 5 is provided on the counterweight 21, the connection structure between the arc-shaped plate 5 and the bearing 10 may affect the pressure application, that is, there is a certain deviation between the direct pressure received by the bearing 10 and the actual pressure used for pressure application. Since one of the detection indexes of the radial loading test is the deformation of the bearing 10, the arc-shaped plate 5 cannot hinder the downward movement of the counterweight 21. In this embodiment, there needs to be a passage for the counterweight 21 to pass through between the two side blocks 22.
[0033] Embodiment 3: To ensure the docking stability between the upper clamping block 2 and the lower clamping block 1, an improvement is made on the basis of Embodiment 1 or 2. As shown in Figures 2-5 , in this embodiment, a guide rod 6 is provided on the bottom wall of the side block 22, and a guide groove 11 for cooperating with the guide rod 6 is provided on the lower clamping block 1.
[0034] During the specific implementation process, the cooperation between the guide groove 11 and the guide rod 6 can ensure the position stability when the upper clamping block 2 and the lower clamping block 1 are docked.
[0035] Example 4: In order to insert the guide rod 6 into the guide groove 11 better, improvements are made on the basis of Example 3, as Figure 6 shown. In this embodiment, a gap is left between the insertion end of the guide rod 6 and the side wall of the notch of the guide groove 11.
[0036] During the specific implementation process, as Figure 6 shown, the bottom end of the guide rod 6 can be set as a pyramid shape, so that the area of the bottom end of the guide rod 6 is smaller than the area of the notch of the guide groove 11.
[0037] Example 5: In order to facilitate the transfer of the bearing 10 after the test, improvements are made on the basis of Example 3, as Figure 1 shown. In this embodiment, the test device further includes: a bottom plate 7, the lower clamping block 1 is connected to the bottom plate 7, the bottom plate 7 is provided with a sliding groove 71, and the side plate 41 of the mounting frame 4 is slidably connected to the sliding groove 71. During the sliding process of the mounting frame 4, at least one state satisfies that the upper clamping block 2 completely disengages from the bearing 10.
[0038] During the specific implementation process, the sliding connection structure is a prior art, and the sliding can be realized through the cooperation of the sliding groove 71 and the slider, which will not be elaborated here. After the test, first separate the bearing 10 from the upper clamping block 2, then move the upper clamping block 2 upward through the driving device 3, move the mounting frame 4, so that the mounting frame 4 drives the upper clamping block 2 away from the bearing 10, and then the hoisting device moves above the bearing 10 and connects with the bearing 10. Finally, separate the bearing 10 from the lower clamping block 1, and the bearing 10 can be transported.
[0039] Example 6: In order to ensure that the guide rod 6 is aligned with the guide groove 11 when the mounting frame 4 is reset, improvements are made on the basis of Example 5, as Figure 5 or Figure 6 shown. In this embodiment, a light emitting device 61 is provided on the bottom wall of the guide rod 6, a light receiving device 111 is provided on the bottom of the guide groove 11, and the length of the guide rod 6 is less than the depth of the guide groove 11.
[0040] During the specific implementation process, Figure 5 and Figure 6 the black parts in represent the light emitting device 61 and the light receiving device 111. The light emitting device 61 can adopt an infrared light emitting device. When the light receiving device 111 receives the infrared light, it proves that the guide rod 6 is aligned with the guide groove 11, and the upper clamping member can be moved downward to make the upper clamping member and the lower clamping member engage to realize the clamping of the bearing 10.
[0041] Example 7: In order to facilitate the horizontal transfer of the bearing 10, improvements are made on the basis of Example 5, as Figures 7-8As shown, in this embodiment, the lower clamping block 1 is slidably connected to the bottom plate 7. The lower clamping block 1 includes: a concave block 12, a guiding block 13, and a placing block 14. The concave wall of the concave block 12 is an arc-shaped wall, and the arc-shaped wall is used to abut against the outer wall of the bearing 10; the guiding block 13 is connected to the concave block 12, and the top wall of the guiding block 13 is an inclined wall. The guiding block 13 is located on the opposite side of the installation side of the bearing 10 of the concave block 12; the placing block 14 is connected to one end of the guiding block 13 away from the concave block 12, and the top wall of the placing block 14 is a horizontal wall. The height of the placing block 14 is the same as the height of the guiding block 13.
[0042] In the specific implementation process, in the actual process, due to the large volume of the large bearing 10, during transportation, the rotating shaft is generally in a horizontal state. This embodiment mainly solves the problem of horizontal transportation of the bearing 10. The installation side of the concave block 12 for the bearing 10 refers to, as Figure 7 shown, the left side of the arc-shaped plate 5, that is, the abutting side of the arc-shaped plate 5 and the bearing 10. After the bearing 10 is completely separated from the upper clamping block 2 and the lower clamping block 1, the upper side wall of the bearing 10 is connected by a hoisting device, and then the lower clamping block 1 is moved so that the lower side wall of the bearing 10 slides along the guiding block 13 until, as Figure 8 shown, the bearing 10 is horizontally placed on the placing block 14.
[0043] Embodiment 8: In order to better achieve pressure application, an improvement is made on the basis of Embodiment 3. As Figure 1 shown, in this embodiment, the side block 22 is provided with an upper connecting plate 8, and the lower clamping block 1 is provided with a lower connecting plate 9. The upper connecting plate 8 and the lower connecting plate 9 are connected by bolts.
[0044] In the specific implementation process, when the guiding rod 6 and the guiding groove 11 are provided, the connecting rod 211 needs to apply a certain downward pressure to the side block 22 so that the guiding rod 6 completely enters the guiding groove 11. At this time, the state of the connecting rod 211 is as Figure 4 shown. It can be seen from the figure that the clamping surface of the counterweight block 21 will abut against the bearing 10 first. At this time, there is still a certain distance between the clamping surface of the side block 22 and the side wall of the bearing 10, and the abutment of the connecting rod 211 and the lower side wall of the through hole 221 will affect the pressure on the bearing 10. Therefore, in this embodiment, an upper connecting plate 8 and a lower connecting plate 9 are also provided. The upper connecting plate 8 is moved downward to drive the side block 22 to move downward until it abuts against the side wall of the bearing 10, and then the upper connecting plate 8 and the lower connecting plate 9 are connected to further improve the installation stability of the two. During the downward movement of the side block 22, the upper clamping block becomes as Figure 2 shown, and there is a certain distance between the connecting rod 211 and the lower side wall of the through hole 221.
[0045] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, for ordinary technical personnel in the field, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A bearing radial loading test device, characterized in that: include: Lower clamping block; An upper clamping block, wherein the upper clamping block and the lower clamping block are matched to form a cylindrical space for accommodating the bearing, and the upper clamping block comprises: a counterweight block and a side block, wherein connecting rods are arranged on both sides of the counterweight block; the side block is provided with a through hole for the connecting rod to pass through, and each connecting rod is equipped with one side block; A driving device, the driving device is connected to the counterweight block and is used to drive the counterweight block to move longitudinally and adjust the counterweight; A mounting frame, the mounting frame is used to mount the driving device, the side plate of the mounting frame is provided with a slide rail matched with a connecting rod, one end of the connecting rod away from the counterweight block is slidably connected to the slide rail, and the length of the slide rail is greater than half of the outer diameter of the bearing; When the clamping wall of the counterweight block and the clamping wall of the side block are on the same arc surface, a gap is left between the bottom wall of the connecting rod and the through hole.
2. The bearing radial loading test device according to claim 1, characterized in that: The clamping wall of the lower clamping block and the clamping wall of the side block are both provided with arc plates for installing bearings, the arc plates are provided with screw holes, and a channel for the counterweight block to pass through is formed between the arc plates of the two side blocks.
3. The bearing radial loading test device according to claim 1 or 2, characterized in that: The bottom wall of the side block is provided with a guide rod, and the lower clamping block is provided with a guide groove matched with the guide rod.
4. The bearing radial loading test device according to claim 3, characterized in that: A gap is left between the insertion end of the guide rod and the side wall of the notch of the guide groove.
5. The bearing radial loading test device according to claim 3, characterized in that: The test apparatus also includes: The bottom plate, the lower clamping block is connected to the bottom plate, the bottom plate is provided with a slide groove, the side plate of the mounting frame is slidably connected to the slide groove, and during the sliding process of the mounting frame, there is at least one state that satisfies the upper clamping block to completely detach from the bearing.
6. The bearing radial loading test device according to claim 5, characterized in that: The bottom wall of the guide rod is provided with a light emitting device, the bottom of the guide groove is provided with a light receiving device, and the length of the guide rod is smaller than the depth of the guide groove.
7. The bearing radial loading test device according to claim 5, characterized in that: The lower clamping block is slidably connected to the bottom plate, and the lower clamping block comprises: A concave block, wherein the concave wall of the concave block is a curved wall, and the curved wall is used to abut against the outer wall of the bearing; A guide block, the guide block is connected to the concave block, the top wall of the guide block is an inclined wall, and the guide block is located on the opposite side of the concave block bearing installation side; A placing block is connected to an end of the guide block away from the concave block, the top wall of the placing block is a horizontal wall, and the height of the placing block is consistent with the height of the guide block.
8. The bearing radial loading test device according to claim 3, characterized in that: The side block is provided with an upper connecting plate, the lower clamping block is provided with a lower connecting plate, and the upper connecting plate and the lower connecting plate are connected by bolts.