A quick installation device for centrifuge bearings

Abstract

This utility model relates to the technical field of bearing installation equipment, and more particularly to a quick installation device for centrifuge bearings. The device includes a fixed frame with an internal gear ring on its inner wall and a central drive mechanism. The drive mechanism includes a sun gear, and multiple driven teeth mesh between the internal gear ring and the sun gear. This utility model uses a drive mechanism to synchronously drive multiple pushing mechanisms, causing the bearing to move and be heated by a heating mechanism. After heating, the bearing is pushed down towards the drive shaft for press-fitting. The drive mechanism synchronously drives multiple pushing mechanisms, ensuring horizontal movement of the bearing and preventing misalignment between the bearing and the drive shaft. The pushing mechanism includes elastic clamping components to accommodate thermal expansion and contraction of the bearing, preventing loosening during movement. The overall structure is reasonable, simple, and easy to operate, effectively improving the efficiency and quality of centrifuge bearing installation.

Description

Technical Field

[0001] This utility model relates to the field of bearing installation equipment technology, and in particular to a quick installation device for centrifuge bearings. Background Technology

[0002] In the assembly and maintenance of centrifuges, bearing installation is a critical and tedious task. Traditional bearing installation methods typically use tools such as copper rods and hammers. The copper rod is placed on the end face of the inner or outer ring of the bearing, and then the hammer is used to strike the copper rod. The copper rod transmits a uniform striking force, allowing the bearing to be slowly pushed in until it is installed in place. Traditional methods suffer from problems such as low efficiency, high skill requirements, and difficulty in ensuring installation accuracy. This can easily lead to axial misalignment between the bearing and the drive shaft, hindering installation and potentially damaging the bearing and the centrifuge's drive shaft, thus affecting the normal operation of the centrifuge. Utility Model Content

[0003] The purpose of this invention is to provide a quick installation device for centrifuge bearings to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A centrifuge bearing quick installation device, comprising: A fixed frame has an internal gear ring on its inner wall and a drive mechanism at its center. The drive mechanism includes a sun gear. The internal gear ring and the sun gear are meshed with multiple driven teeth. Each of the multiple driven teeth is fixedly connected to a lead screw. One end of the lead screw passes through the bottom wall of the fixed frame and extends longitudinally downwards. A push mechanism is driven to be connected to the rod body. The pushing mechanism includes a slider and an elastic clamping assembly, wherein the slider is driven and connected to a lead screw, and the elastic clamping assembly is rotatably connected to the slider; A heating mechanism is mounted on the bottom axis of the fixed frame; The support frame has multiple sets, which are arranged around the fixed frame and are movably hinged to the fixed frame.

[0005] Preferably, the drive mechanism further includes a drive connecting block coaxial with and fixedly connected to the sun gear, and the drive connecting block is provided with an operating rod that passes through the drive connecting block in a radial direction.

[0006] Preferably, the elastic clamping assembly includes a movable ring, which is rotatably fitted around the outer periphery of the slider. A first clamping block is provided at one radial end of the outer periphery of the movable ring, and second clamping blocks are hinged to both sides of the first clamping block. Support wings are provided on both sides of the other radial end corresponding to the two second clamping blocks, and the second clamping blocks are elastically connected to the corresponding support wings.

[0007] Preferably, a guide rod is hinged to the rear end face of the second clamping block relative to the supporting wing. The supporting wing is provided with a through anti-reverse groove. The other end of the guide rod can move through the anti-reverse groove. An elastic element is sleeved on the guide rod. One end of the elastic element abuts against the second clamping block, and the other end abuts against the end face of the supporting wing.

[0008] Preferably, one end of the guide rod that passes through the anti-reverse groove is threadedly connected to an adjusting nut.

[0009] Preferably, a limiting pin is provided on the top surface of the second clamping block on both sides away from the end that is hinged to the first clamping block, and a pressure plate is connected between the two limiting pins. The two ends of the pressure plate are provided with adjustment grooves, the limiting pin is set in the adjustment groove and is slidably connected to the adjustment groove, and a limiting nut is threaded to the end of the limiting pin that passes through the adjustment groove.

[0010] Preferably, the side wall of the fixing frame is equipped with a hinge seat, and the support frame includes a support rod that is movably hinged to the hinge seat and a movable rod that is slidably fitted outside the support rod, with a support pad movably hinged to one bottom end of the movable rod.

[0011] Preferably, the side wall of the movable rod is provided with a sliding groove parallel to its sliding direction, and one end of the bottom of the support rod is provided with a guide pin that is slidably connected to the sliding groove. The end of the guide pin that passes through the sliding groove is connected to a locking ring by a thread.

[0012] Preferably, the heating mechanism includes an eddy current coil, a base is mounted on the top of the eddy current coil, the base is fixedly connected to the bottom of the fixing frame, and the base is provided with a power interface that is electrically connected to the eddy current coil.

[0013] Preferably, a level is provided between two adjacent support frames on the side wall of the fixed frame, and the level is connected to the side wall of the fixed frame through a horizontal mounting bracket.

[0014] Compared with the prior art, this utility model provides a quick installation device for centrifuge bearings, which has the following advantages: This invention uses a drive mechanism to synchronously drive multiple pushing mechanisms to move the bearing, which is then heated by a heating mechanism. After heating, the bearing is pushed down to approach the transmission shaft for pressing. The drive mechanism can synchronously drive multiple pushing mechanisms to ensure the bearing moves horizontally and avoids misalignment between the bearing and the transmission shaft. The pushing mechanism has an elastic clamping component that can adapt to the thermal expansion and contraction of the bearing, preventing the bearing from loosening during movement. The overall structure is reasonable, simple, and easy to operate, effectively improving the efficiency and quality of centrifuge bearing installation. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a three-dimensional structural schematic diagram of the present invention; Figure 3 This is a three-dimensional structural schematic diagram of the present invention (second perspective). Figure 4 This is a bottom view of the structure of this utility model; Figure 5 This is a partially enlarged schematic diagram of the support frame structure of this utility model; Figure 6 This is a partially enlarged schematic diagram of the propulsion mechanism structure of this utility model.

[0016] In the diagram: 1. Fixed frame; 11. Hinge seat; 12. Internal gear ring; 13. Driven gear; 2. Support frame; 21. Support rod; 211. Guide pin; 22. Movable rod; 221. Slide groove; 23. Locking ring; 24. Support pad; 3. Lead screw; 4. Pushing mechanism; 41. Slider; 42. Movable ring; 421. Support wing; 422. Anti-reverse groove; 43. First clamping block; 44. Second clamping block; 441. Limit pin; 442. Guide rod; 443. Elastic element; 45. Pressure plate; 451. Adjustment groove; 46. Limit nut; 47. Adjusting nut; 5. Heating mechanism; 51. Eddy current coil; 52. Base; 53. Power interface; 6. Level; 61. Horizontal mounting bracket; 7. Drive mechanism; 71. Sun gear; 72. Drive connecting block; 73. Operating lever. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] Reference Figures 1-6 A centrifuge bearing quick installation device, comprising: The fixed frame 1 has an internal gear ring 12 on its inner wall and a drive mechanism 7 at its center. The drive mechanism 7 includes a sun gear 71. Multiple driven teeth 13 are meshed between the internal gear ring 12 and the sun gear 71. Each of the multiple driven teeth 13 is fixedly connected to a lead screw 3. One end of the lead screw 3 extends longitudinally downward through the bottom wall of the fixed frame 1 and a push mechanism 4 is driven to be connected to the rod. In use, the rotation of the sun gear 71 synchronously drives the multiple driven teeth 13 to rotate, thereby driving the lead screw 3 to rotate, so that the push mechanism 4 installed on the lead screw 3 moves along the direction set by the lead screw 3. The pushing mechanism 4 includes a slider 41 and an elastic clamping assembly. The slider 41 is driven and connected to the lead screw 3. The elastic clamping assembly is rotatably connected to the slider 41. The elastic clamping mechanism moves to clamp and fix the bearing. During the installation process, the lead screw 3 drives the slider 41 to move. The slider 41 drives the elastic clamping mechanism to move longitudinally downward, thereby driving the bearing closer to the drive shaft of the centrifuge and pressing the bearing into the drive shaft. Heating mechanism 5 is set on the bottom axis of the fixed frame 1 and is used to heat the bearing so that its inner ring expands due to heat, which facilitates the pressing of the bearing. The support frame 2 has multiple sets, which are arranged around the fixed frame 1 and are movably hinged to the fixed frame 1. They are used to adjust the height of the fixed frame 1 relative to the ground, thereby accommodating the bearing press-fitting operation of the drive shaft at different heights.

[0020] Furthermore, the drive mechanism 7 also includes a drive connecting block 72 coaxial with and fixedly connected to the sun gear 71. The drive connecting block 72 is provided with an operating rod 73 that passes through the drive connecting block 72 radially. In use, by rotating the operating rod 73, the sun gear 71 is driven to move through the drive connecting block 72. The sun gear 71 synchronously drives multiple driven teeth 13 to rotate synchronously, thereby keeping the lead screw 3 moving synchronously. This causes multiple push mechanisms 4, which are installed on the multiple lead screws 3, to move synchronously, thereby keeping the bearing moving horizontally and preventing the axis between the bearing and the transmission shaft from shifting, which would hinder the press-fitting.

[0021] Furthermore, the elastic clamping assembly includes a movable ring 42, which is rotatably fitted around the outer periphery of the slider 41. A first clamping block 43 is provided at one radial end of the outer periphery of the movable ring 42. Second clamping blocks 44 are hinged to both sides of the first clamping block 43. Support wings 421 are provided on both sides of the other radial end corresponding to the two second clamping blocks 44. The second clamping blocks 44 are elastically connected to the corresponding support wings 421. In use, it is used to elastically clamp the bearing, which can adapt to the expansion caused by the bearing being heated and the slight deformation caused by the contraction after cooling, and prevent the bearing from loosening during the press-fitting process.

[0022] Furthermore, a guide rod 442 is hinged to the rear end face of the second clamping block 44 relative to the support wing 421. The support wing 421 is provided with a through anti-reverse groove 422. The other end of the guide rod 442 can move through the anti-reverse groove 422. An elastic element 443 is sleeved on the guide rod 442. One end of the elastic element 443 abuts against the second clamping block 44, and the other end abuts against the end face of the support wing 421. In use, through the cooperation of the guide rod 442 and the elastic element 443, the second clamping block 44 has a certain degree of mobility and elasticity during the clamping process, ensuring the stability and reliability of the clamping. The adjusting nut 47 can adjust its axial position relative to the guide rod 442, thereby compressing the elastic element 443 and changing the preload of the elastic element 443 to adapt to the clamping force adjustment requirements of different bearings.

[0023] Furthermore, one end of the guide rod 442 that passes through the anti-reverse groove 422 is connected to an adjusting nut 47 by a thread to prevent the guide rod 442 from disengaging from the anti-reverse groove 422 during use, which would cause clamping failure.

[0024] Furthermore, a limiting pin 441 is provided on the top surface of the end of the second clamping block 44 on both sides away from the hinged end of the first clamping block 43. A pressure plate 45 is connected between the two limiting pins 441. An adjustment groove 451 is provided at both ends of the pressure plate 45. The limiting pin 441 is set in the adjustment groove 451 and is slidably connected to the adjustment groove 451. A limiting nut 46 is threaded to one end of the limiting pin 441 that passes through the adjustment groove 451. In use, the bearing sidewall abuts against the first clamping block 43 and the second clamping block 44, and the pressure plate 45 abuts against the top edge of the bearing axial direction. Thus, the bearing has a pushing and pressing effect on the bearing during the process of the bearing being installed into the drive shaft. The limiting nut 46 is used to limit the installation position of the pressure plate 45. The adjustment groove 451 is provided at both ends of the pressure plate 45, so that the second clamping blocks 44 on both sides can rotate around the hinged end of the first clamping block 43, thereby expanding or contracting to fit the sidewall of the bearing.

[0025] Furthermore, a hinge seat 11 is installed on the side wall of the fixed frame 1, and the support frame 2 includes a support rod 21 that is movably hinged to the hinge seat 11 and a movable rod 22 that is slidably fitted outside the support rod 21. A support pad 24 is movably hinged to one end of the bottom of the movable rod 22. In use, the fixed frame 1 is movably hinged to the support frame 2 and the movable rod 22 can slide relative to the support rod 21, thereby flexibly adjusting the height of the fixed frame 1 relative to the ground, so as to adapt to the press-fit bearing operation of the transmission shaft at different heights and improve the versatility and flexibility of the equipment.

[0026] Furthermore, the side wall of the movable rod 22 is provided with a groove 221 parallel to its sliding direction. One end of the bottom of the support rod 21 is provided with a guide pin 211 that is slidably connected to the groove 221. One end of the guide pin 211 that passes through the groove 221 is threadedly connected to a locking ring 23. The guide pin 211 is located in the groove 221, so that the movable rod 22 can drive the groove 221 to slide stably along the axial direction of the support rod 21 under the guidance of the guide pin 211. The locking ring 23 is threadedly connected to the guide pin 211. By adjusting the position of the locking ring 23 in the axial direction of the guide pin 211, one end face of the locking ring 23 abuts against the outer wall of the groove 221, thereby locking the relative position between the movable rod 22 and the support rod 21, thus forming a stable support structure.

[0027] Furthermore, the heating mechanism 5 includes an eddy current coil 51, with a base 52 mounted on the top of the eddy current coil 51. The base 52 is fixedly connected to the bottom of the fixing frame 1. The base 52 is provided with a power interface 53 that is electrically connected to the eddy current coil 51. In use, the eddy current coil 51 is used to heat the inner ring of the bearing, causing the inner ring of the bearing to expand due to heat, so that the diameter of the inner ring is slightly larger than the diameter of the rotating shaft, which facilitates installation. The eddy current coil 51 has high heating efficiency and good uniformity, realizing rapid heating of metal bearings.

[0028] Furthermore, a level 6 is provided between two adjacent support frames 2 on the side wall of the fixed frame 1. The level 6 is connected to the side wall of the fixed frame 1 through a horizontal mounting bracket 61. The level 6 monitors and adjusts the height of the support frame 2 to keep the fixed frame 1 in a horizontal state at all times, ensuring the coaxiality of the bearing and the drive shaft during the pressing process and improving the pressing quality.

[0029] Working principle: Based on the height of the centrifuge drive shaft, the fixed frame 1 is adjusted to a suitable height by adjusting the support frame 2. The support frame 2 is then adjusted using the level 6 to ensure that the fixed frame 1 is horizontal and directly above the drive shaft. The bearing to be installed is then placed on the elastic clamping assembly, which clamps and fixes the bearing. Rotating the operating lever 73 causes the slider 41 to move the elastic clamping assembly upward along the lead screw 3, moving the inner ring of the bearing to the position of the outer ring of the eddy current coil 51 in the heating mechanism 5. Power is then connected through the power interface 53, activating the heating mechanism 5. The eddy current coil 51 heats the inner ring of the bearing, causing it to expand. After heating, rotating the operating lever 73 causes the slider 41 to move the elastic clamping assembly downward along the lead screw 3, smoothly and accurately pressing the bearing into the drive shaft, thus completing the bearing installation.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A quick installation device for centrifuge bearings, characterized in that, include: A fixed frame (1) is provided with an internal gear ring (12) on its inner wall and a drive mechanism (7) is provided at its center. The drive mechanism (7) includes a sun gear (71). The internal gear ring (12) and the sun gear (71) are meshed with a plurality of driven teeth (13). Each of the plurality of driven teeth (13) is fixedly connected with a lead screw (3). One end of the bottom of the plurality of lead screws (3) extends longitudinally downward through the bottom wall of the fixed frame (1) and a push mechanism (4) is driven connected to the rod body. The pushing mechanism (4) includes a slider (41) and an elastic clamping assembly. The slider (41) is driven and connected to the lead screw (3), and the elastic clamping assembly is rotatably connected to the slider (41). Heating mechanism (5), the heating mechanism (5) is mounted on the bottom axis of the fixed frame (1); The support frame (2) has multiple sets, and the multiple sets of support frames (2) are arranged around the fixed frame (1) and are movably hinged to the fixed frame (1).

2. The centrifuge bearing quick installation device according to claim 1, characterized in that, The drive mechanism (7) also includes a drive connecting block (72) that is coaxial with and fixedly connected to the sun gear (71), and the drive connecting block (72) is provided with an operating rod (73) that passes through the drive connecting block (72) in the radial direction.

3. The centrifuge bearing quick installation device according to claim 1, characterized in that, The elastic clamping assembly includes a movable ring (42), which is rotatably fitted around the outer periphery of the slider (41). A first clamping block (43) is provided at one radial end of the outer periphery of the movable ring (42). Second clamping blocks (44) are hinged to both sides of the first clamping block (43). Support wings (421) are provided on both sides of the other radial end corresponding to the two second clamping blocks (44). The second clamping blocks (44) are elastically connected to the corresponding support wings (421).

4. The centrifuge bearing quick installation device according to claim 3, characterized in that, The second clamping block (44) has a guide rod (442) hinged to the rear end face of the support wing (421). The support wing (421) has a through anti-reverse groove (422). The other end of the guide rod (442) can move through the anti-reverse groove (422). An elastic element (443) is sleeved on the guide rod (442). One end of the elastic element (443) abuts against the second clamping block (44), and the other end abuts against the end face of the support wing (421).

5. A centrifuge bearing quick installation device according to claim 4, characterized in that, The guide rod (442) has an adjusting nut (47) threadedly connected to one end of the guide rod (442) that passes through the anti-reverse groove (422).

6. The centrifuge bearing quick installation device according to claim 5, characterized in that, On the top surface of the second clamping block (44) on both sides away from the end that is hinged to the first clamping block (43), there is a limiting pin (441). A pressure plate (45) is connected between the two limiting pins (441). The two ends of the pressure plate (45) are provided with adjustment grooves (451). The limiting pin (441) is set in the adjustment groove (451) and is slidably connected to the adjustment groove (451). The end of the limiting pin (441) that passes through the adjustment groove (451) is threadedly connected to a limiting nut (46).

7. The centrifuge bearing quick installation device according to claim 1, characterized in that, The side wall of the fixed frame (1) is equipped with a hinge seat (11), and the support frame (2) includes a support rod (21) that is movably hinged to the hinge seat (11) and a movable rod (22) that is slidably fitted outside the support rod (21). A support pad (24) is movably hinged to one end of the bottom of the movable rod (22).

8. A centrifuge bearing quick installation device according to claim 7, characterized in that, The movable rod (22) has a sliding groove (221) on its side wall that is parallel to its sliding direction. The bottom end of the support rod (21) is provided with a guide pin (211) that is slidably connected to the sliding groove (221). The end of the guide pin (211) that passes through the sliding groove (221) is connected to a locking ring (23) by a thread.

9. A centrifuge bearing quick installation device according to claim 1, characterized in that, The heating mechanism (5) includes an eddy current coil (51), and a base (52) is installed on the top of the eddy current coil (51). The base (52) is fixedly connected to the bottom of the fixing frame (1). The base (52) is provided with a power interface (53) that is electrically connected to the eddy current coil (51).

10. A centrifuge bearing quick installation device according to claim 1, characterized in that, A level (6) is also provided between two adjacent support frames (2) on the side wall of the fixed frame (1). The level (6) is connected to the side wall of the fixed frame (1) through a horizontal mounting bracket (61).

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