Bearing outer ring fixing device

Abstract

The utility model discloses a bearing outer ring fixing device, and relates to the technical field of bearing installation. According to the technical scheme, the bearing outer ring fixing device comprises a cross beam body, a mounting hole penetrating through the cross beam body is formed in the cross beam body, and a bearing can be mounted in the mounting hole; a connecting hole penetrating through the cross beam body is further formed in the cross beam body, a connecting rod is installed in the connecting hole, the length of the connecting rod is larger than the depth of the connecting hole, a first pressing block and a second pressing block are fixed to the two ends of the connecting rod respectively, and the first pressing block and the second pressing block can abut against the end faces of the two sides of the bearing outer ring respectively. The bearing outer ring fixing device has the beneficial effects that the bearing outer ring is stably fixed, the bearing outer ring is effectively prevented from rotating, and the abrasion of a cross beam body mounting hole is reduced; meanwhile, the bearing outer ring can slide in the axial direction of the transmission shaft, the stress concentration problem on the bearing is further avoided, the durability of the bearing is remarkably improved, and the service life of the bearing is remarkably prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing installation, in particular to a bearing outer ring fixing device. Background Art

[0002] Some large-scale mechanical equipment, such as large mechanical presses, often have many shaft transmission parts installed on their crossbeams. These parts are called transmission shafts and are responsible for transmitting power. During operation, the transmission shaft relies on the bearings installed in the mounting holes of the crossbeam for support. However, due to the temperature difference in the working environment, the transmission shaft may be axially deformed. Therefore, in order to cope with this problem, the bearings that match the transmission shaft are designed to be able to perform fine-tuning sliding along the axial direction of the transmission shaft, which can effectively eliminate the stress concentration caused by deformation and ensure that the bearings can maintain good performance after long-term use and avoid damage.

[0003] The outer ring of the bearing can not only slide along the axis of the transmission shaft, but also rotate around the axis of the transmission shaft. The rotation of the outer ring of the bearing will accelerate the wear of the mounting hole of the crossbeam. The existing bearing outer ring fixing device includes a fastening screw, which is installed inside the crossbeam. When the outer ring of the bearing needs to be fixed, it is only necessary to screw in the fastening screw. The front end of the fastening screw will enter the mounting hole of the crossbeam and closely contact with the outer ring of the bearing, thereby preventing the outer ring of the bearing from rotating.

[0004] However, the front end of the fastening screw is in close contact with the outer ring of the bearing, which will limit the sliding of the outer ring of the bearing along the axis of the transmission shaft. When the transmission shaft is axially deformed, stress concentration will occur on the bearing, which will reduce the service life of the bearing. Summary of the invention

[0005] In order to solve the problem that a fastening screw will restrict the outer ring of the bearing from sliding along the axis of the transmission shaft, thereby causing stress concentration on the bearing, the utility model provides a bearing outer ring fixing device which can avoid restricting the outer ring of the bearing from sliding along the axis of the transmission shaft and causing stress concentration on the bearing.

[0006] In order to solve the above problems, the technical solution adopted by the utility model is a bearing outer ring fixing device, including a crossbeam body, a mounting hole penetrating the crossbeam body is provided on the crossbeam body, and the bearing can be installed in the mounting hole; the crossbeam body is also provided with a connecting hole penetrating the crossbeam body, a connecting rod is installed in the connecting hole, the length of the connecting rod is greater than the hole depth of the connecting hole, and a pressure block 1 and a pressure block 2 are respectively fixed at both ends of the connecting rod, and the pressure block 1 and the pressure block 2 can respectively abut against the end faces on both sides of the bearing outer ring. After the bearing is installed in the mounting hole, the pressure block 1 and the pressure block 2 are respectively tightly clamped from the end faces on both sides of the bearing outer ring to ensure that the bearing outer ring is stable and does not rotate. When the transmission shaft undergoes axial deformation, the connecting rod slides flexibly in the connecting hole, so that the pressure block 1, the pressure block 2, the connecting rod and the bearing together form a whole, and can be adjusted accordingly with the direction of the axial deformation of the transmission shaft, thereby effectively dispersing the stress concentration on the bearing, thereby extending the service life of the bearing.

[0007] Preferably, the center line of the mounting hole is perpendicular to the mounting surface of the cross beam body. Ensuring that the center line of the mounting hole is perpendicular to the mounting surface of the cross beam body not only improves the accuracy of the installation, but also greatly facilitates the subsequent maintenance and adjustment work.

[0008] Preferably, the center line of the connecting hole is parallel to the center line of the mounting hole. By ensuring that the center line of the connecting hole is parallel to the center line of the mounting hole, the synchronous movement of the connecting rod and the bearing can be smoothly achieved.

[0009] Preferably, a light hole is provided on the first pressing block, a screw hole is provided on the second pressing block, and the positions of the light hole and the screw hole are adapted to the connection hole, and the connection rod is a fastening bolt, and the bolt rod of the fastening bolt passes through the light hole, the connection hole and the screw hole in sequence. The bolt rod of the fastening bolt passes through the light hole, the connection hole and the screw hole, effectively fastening the first pressing block and the second pressing block together firmly, ensuring that they can stably clamp the outer ring of the bearing to prevent it from rotating.

[0010] Preferably, two connection holes are provided, two light holes are provided, and two screw holes are provided, and the distance between the two light holes and the distance between the two screw holes are equal to the distance between the two connection holes. Such a design can ensure that the two fastening bolts can lock the first and second pressure blocks, thereby effectively fixing the two together and significantly enhancing the fixing strength.

[0011] Preferably, a sleeve is installed in the connection hole, the connection rod is located inside the sleeve, the two ends of the sleeve are respectively in contact with the first and second pressing blocks, and the length of the sleeve is greater than the hole depth of the connection hole. The sleeve provides necessary protection for the connection rod, and the sliding process of the sleeve in the connection hole will be smoother and unobstructed.

[0012] Preferably, both the first and second pressing blocks are configured as arc-shaped curved plates. The first and second pressing blocks are both designed with arc-shaped curved plates to ensure that the force is more uniform when clamping the outer ring of the bearing, thereby significantly improving the tightening effect and ensuring the stability and reliability of the system.

[0013] Preferably, the first and second pressing blocks are both provided with chamfers on one side close to the mounting hole, which is intended to eliminate edge burrs, ensure safety during work, and effectively prevent workers from being injured by contact with sharp edges.

[0014] Preferably, a boss 1 is fixed on the end surface of the first pressing block close to the mounting hole, and a boss 2 is fixed on the end surface of the second pressing block close to the mounting hole, and the boss 1 and the boss 2 can respectively abut against the end surfaces of both sides of the outer ring of the bearing. The outer ring of the bearing is clamped by the boss 1 and the boss 2 to ensure that the clamping force is concentrated and acts only on the outer ring of the bearing, thereby ensuring the normal use of the bearing without interfering with the internal structure of the bearing.

[0015] Preferably, boss 1 and boss 2 are both configured as arc-shaped curved plates. Boss 1 and boss 2 are both designed with arc-shaped curved plates, which can better fit the outer ring of the bearing, ensuring more uniform force during the clamping process, thereby improving the clamping effect and ensuring the stability and safety of the bearing.

[0016] It can be seen from the above technical solutions that the advantages of the utility model are: after the bearing is installed into the mounting hole, boss 1 and boss 2 are tightly clamped from the two side end faces of the outer ring of the bearing respectively, ensuring that the outer ring of the bearing is stable and does not rotate. When the transmission shaft undergoes axial deformation, the sleeve slides flexibly in the connecting hole, so that the pressure block 1, pressure block 2, connecting rod and bearing together form a whole, and can be adjusted accordingly with the direction of the axial deformation of the transmission shaft, thereby effectively dispersing the stress concentration on the bearing, thereby extending the service life of the bearing. In summary, the device not only achieves a stable fixation of the outer ring of the bearing, effectively prevents its rotation, and reduces the wear of the mounting hole of the crossbeam; at the same time, the outer ring of the bearing can slide along the axial direction of the transmission shaft, further avoiding the problem of stress concentration on the bearing, and significantly improving the durability and service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a specific implementation method of the utility model.

[0019] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0020] Figure 3 It is a schematic diagram of the main structure of a specific implementation method of the utility model.

[0021] Figure 4 It is a left-side structural schematic diagram of a specific implementation method of the utility model.

[0022] Figure 5 It is a schematic cross-sectional structure diagram of a specific implementation method of the utility model.

[0023] Figure 6 for Figure 5 A partial enlarged view of point B in the middle.

[0024] Description of main reference numerals

[0025] In the figure: 1. cross beam, 2. transmission shaft, 3. pressing block 1, 31. light hole, 32. boss 1, 4. pressing block 2, 41. screw hole, 42. boss 2, 5. bearing outer ring, 6. fastening bolt, 7. sleeve. DETAILED DESCRIPTION

[0026] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] A bearing outer ring fixing device comprises a cross beam body 1, and a bearing is installed inside the cross beam body 1. Figure 1 , 2 As shown, a connecting hole penetrating the cross beam body 1 is provided on the cross beam body 1, a connecting rod is installed in the connecting hole, the length of the connecting rod is greater than the hole depth of the connecting hole, and a pressure block 1 3 and a pressure block 2 4 are fixed at both ends of the connecting rod respectively, and the pressure block 1 3 and the pressure block 2 4 can respectively abut against the end faces of both sides of the bearing outer ring 5.

[0028] In this specific embodiment, the cross beam 1 specifically adopts the following structure: the cross beam 1 is rectangular as a whole, and the front and rear end surfaces of the cross beam 1 are mounting surfaces that match the transmission shaft 2. The mounting surface of the cross beam 1 is provided with a mounting hole that penetrates the cross beam 1, and the mounting hole is a through hole of equal diameter. The bearing can be installed in the mounting hole, and the outer ring 5 of the bearing and the mounting hole are clearance-fitted. In addition, the center line of the mounting hole is perpendicular to the mounting surface of the cross beam 1.

[0029] The connection hole is arranged outside the mounting hole, and the center line of the connection hole is parallel to the center line of the mounting hole. In the present embodiment, there are two connection holes, the center lines of the two connection holes are parallel to each other, and the distances from the center lines of the two connection holes to the center line of the mounting hole are equal. Sleeves 7 are installed inside the two connection holes, and the connecting rod is located inside the sleeve 7. The two ends of the sleeve 7 are respectively abutted against the pressure block 1 3 and the pressure block 2 4. The length of the sleeve 7 is greater than the hole depth of the connection hole, and the sleeve 7 can slide in the connection hole.

[0030] like Figure 3 , 4 As shown, in this specific embodiment, the pressure block 1 3 and the pressure block 2 4 specifically adopt the following structure: the pressure block 1 3 and the pressure block 2 4 are both configured as arc-shaped bent plates, and the pressure block 1 3 and the pressure block 2 4 are respectively arranged on both sides of the cross beam body 1, and the pressure block 1 3 and the pressure block 2 4 are both chamfered on the side close to the mounting hole. The pressure block 1 3 is provided with a light hole 31, and the position of the light hole 31 is adapted to the connection hole. In this embodiment, there are two light holes 31, the center lines of the two light holes 31 are parallel to each other, and the distance between the two light holes 31 is equal to the distance between the two connection holes.

[0031] A boss 32 is provided on the end surface of the pressing block 3 near the mounting hole, and the boss 32 is integrally processed with the pressing block 3. The boss 32 is set as an arc-shaped bent plate, one end surface of the boss 32 is fixedly connected to the pressing block 3, and the other end surface of the boss 32 can abut against one end surface of the bearing outer ring 5, and will not contact the ball or inner ring of the bearing.

[0032] The pressing block 2 4 is provided with a screw hole 41, and the position of the screw hole 41 matches the connection hole. In this embodiment, there are two screw holes 41, the center lines of the two screw holes 41 are parallel to each other, and the distance between the two screw holes 41 is equal to the distance between the two connection holes.

[0033] A boss 2 42 is provided on the end surface of the pressing block 2 4 near the mounting hole, and the boss 2 42 is integrally processed with the pressing block 2 4. The boss 2 42 is set as an arc-shaped bent plate, one end surface of the boss 2 42 is fixedly connected to the pressing block 2 4, and the other end surface of the boss 2 42 can abut against the other end surface of the bearing outer ring 5, and will not contact the ball or inner ring of the bearing.

[0034] In this embodiment, the connecting rod is a fastening bolt 6, and the bolt rod of the fastening bolt 6 sequentially passes through the light hole 31, the connecting hole and the screw hole 41, so that the pressing block 1 3 and the pressing block 2 4 can be fastened together. At this time, the pressing block 1 3, the pressing block 2 4, the fastening bolt 6 and the bearing constitute a synchronously moving whole.

[0035] The specific use process of the utility model is as follows: Figure 5 , 6As shown, first, the bearing and the transmission shaft 2 are combined together using a conventional fixing method, which includes using a shaft shoulder and a retaining ring to limit the bearing, or using an interference fit to achieve tight fixation. Then, the bearing is accurately installed in the mounting hole of the crossbeam body 1. At this time, the outer ring 5 of the bearing can rotate and slide smoothly in the mounting hole.

[0036] Next, the sleeve 7 is precisely placed into the connection hole of the cross beam 1, and at the same time, the pressure block 1 3 and the pressure block 2 4 are respectively placed on both sides of the cross beam 1, ensuring that the positions of the light hole 31, the screw hole 41 and the connection hole are precisely aligned. Then, the bolt rod of the fastening bolt 6 is sequentially passed through the light hole 31 of the pressure block 1 3 and the hole in the middle of the sleeve 7, and screwed into the screw hole 41 for fastening. This not only firmly connects the pressure block 1 3, the pressure block 2 4 and the bearing together, but also limits the outer ring 5 of the bearing to slide only along the axial direction of the transmission shaft 2 through the clamping effect of the boss 1 32 and the boss 2 42, thereby preventing it from rotating unnecessarily.

[0037] When the transmission shaft 2 is axially deformed due to various factors, the sleeve 7 will slide accordingly in the connecting hole, and the bearing will also move synchronously, effectively offsetting the influence of the axial deformation of the transmission shaft 2.

[0038] It can be seen from the above embodiments that the beneficial effect of the utility model is that after the bearing is installed into the mounting hole, boss 1 and boss 2 are tightly clamped from the two side end faces of the outer ring of the bearing respectively, ensuring that the outer ring of the bearing is stable and does not rotate. When the transmission shaft undergoes axial deformation, the sleeve slides flexibly in the connecting hole, so that the pressure block 1, the pressure block 2, the connecting rod and the bearing together form a whole, and can be adjusted accordingly with the direction of the axial deformation of the transmission shaft, thereby effectively dispersing the stress concentration on the bearing, thereby extending the service life of the bearing. In summary, the device not only achieves a stable fixation of the outer ring of the bearing, effectively prevents its rotation, and reduces the wear of the mounting hole of the crossbeam; at the same time, the outer ring of the bearing can slide along the axial direction of the transmission shaft, further avoiding the problem of stress concentration on the bearing, and significantly improving the durability and service life of the bearing.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bearing outer ring fixing device, characterized in that: The invention comprises a cross beam body (1), wherein the cross beam body (1) is provided with a mounting hole penetrating the cross beam body (1), and the bearing can be mounted in the mounting hole; the cross beam body (1) is also provided with a connecting hole penetrating the cross beam body (1), and a connecting rod is mounted in the connecting hole, wherein the length of the connecting rod is greater than the hole depth of the connecting hole, and a pressure block 1 (3) and a pressure block 2 (4) are respectively fixed at both ends of the connecting rod, and the pressure block 1 (3) and the pressure block 2 (4) can respectively abut against the end faces of both sides of the bearing outer ring (5).

2. The bearing outer ring fixing device according to claim 1, characterized in that: The center line of the mounting hole is perpendicular to the mounting surface of the crossbeam body (1).

3. The bearing outer ring fixing device according to claim 2, characterized in that: The center line of the connecting hole is parallel to the center line of the mounting hole.

4. The bearing outer ring fixing device according to claim 1, characterized in that: The first pressing block (3) is provided with a light hole (31), and the second pressing block (4) is provided with a screw hole (41), and the positions of the light hole (31) and the screw hole (41) are both adapted to the connection hole, and the connection rod is a fastening bolt (6), and the bolt rod of the fastening bolt (6) passes through the light hole (31), the connection hole and the screw hole (41) in sequence.

5. The bearing outer ring fixing device according to claim 4, characterized in that: Two connecting holes are provided, two light holes (31) are provided, and two screw holes (41) are also provided, and the distance between the two light holes (31) and the distance between the two screw holes (41) are both equal to the distance between the two connecting holes.

6. The bearing outer ring fixing device according to claim 5, characterized in that: A sleeve (7) is installed in the connection hole, the connection rod is located inside the sleeve (7), two ends of the sleeve (7) are respectively in contact with the first pressing block (3) and the second pressing block (4), and the length of the sleeve (7) is greater than the hole depth of the connection hole.

7. The bearing outer ring fixing device according to claim 1, characterized in that: The first pressing block (3) and the second pressing block (4) are both configured as arc-shaped bent plates.

8. The bearing outer ring fixing device according to claim 7, characterized in that: The first pressing block (3) and the second pressing block (4) are both provided with chamfers on one side close to the mounting hole.

9. The bearing outer ring fixing device according to claim 1, characterized in that: A boss 1 (32) is fixed on the end surface of the pressure block 1 (3) close to the mounting hole, and a boss 2 (42) is fixed on the end surface of the pressure block 2 (4) close to the mounting hole. The boss 1 (32) and the boss 2 (42) can respectively abut against the end surfaces on both sides of the bearing outer ring (5).

10. The bearing outer ring fixing device according to claim 9, characterized in that: Both boss 1 (32) and boss 2 (42) are configured as arc-shaped bent plates.

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