Anti-rotation bearing seat

Abstract

The application discloses an anti-rotation bearing seat and belongs to the field of bearing seats.The bearing seat comprises a base, an outer shaft fixedly arranged on the base, and an inner shaft rotatably inserted into the outer shaft through a round hole, and an anti-rotation mechanism is arranged on the outer shaft.The anti-rotation mechanism comprises an inclined block inserted into the outer shaft through a transverse groove, a locking groove which is annularly and equidistantly arranged on the outer wall of the inner shaft and is matched with the inclined block, and a spring arranged in the transverse groove.An adjusting mechanism is arranged on the outer shaft, and the adjusting mechanism comprises a pressing plate arranged in the transverse groove and away from the spring, and a screw rod which is screwedly inserted into a threaded hole away from the inclined block and is rotationally connected with the pressing plate.Through cooperation of the screw rod and the pressing plate, the tension of the spring can be flexibly adjusted, the reliable connection between the inclined block and the locking groove is ensured, and the decline of the anti-rotation effect caused by the elastic attenuation of the spring is avoided.The threaded connection structure facilitates periodical maintenance and replacement of the inclined block and the spring, improves the maintenance convenience, and prolongs the service life of the bearing seat.

Description

Technical Field

[0001] This application relates to the field of bearing housing technology, specifically an anti-rotation bearing housing. Background Technology

[0002] In the field of mechanical transmission, bearing housings, as key components supporting rotating shafts, are crucial for the stability and safety of equipment due to their anti-rotation performance. Especially in scenarios requiring unidirectional rotation, preventing reverse rotation of the shaft system can avoid problems such as power transmission failure and mechanical shock.

[0003] In the prior art, Chinese utility model patent CN222084972U discloses a bearing housing with anti-rotation effect. It achieves unidirectional rotation restriction through ingenious mechanical structure design. The bearing housing includes an outer shaft and an inner shaft, with the inner shaft installed inside the outer shaft through an inner hole and capable of relative rotation. The anti-rotation function is achieved through the cooperation of a spring, a pad, a locking block, and a groove on the surface of the inner shaft: the spring pushes the locking block so that one end contacts the groove; when the inner shaft rotates clockwise, the groove slides along the inclined surface of the locking block, compressing the spring and passing smoothly; while when the inner shaft rotates counterclockwise, the groove directly abuts against the vertical surface of the locking block, and the pad restricts the movement of the locking block, thus preventing reverse rotation. Furthermore, the installation of a fixing seat and bolts stabilizes the outer shaft, reducing vibration and displacement during high-speed rotation; the introduction of a sound-absorbing pad reduces operating noise by buffering the direct impact between the groove and the locking block.

[0004] However, in practical applications, the spring, as the core reset element, is prone to elastic decay under the frequent reciprocating compression of the locking block, resulting in a decrease in the lateral reset capability of the locking block. After long-term use, spring fatigue may prevent the locking block from effectively returning to its original position, reducing the reliability of the locking groove and the locking block, thereby weakening the anti-rotation effect of the inner shaft, and even causing equipment failure or safety hazards due to reverse rotation.

[0005] Therefore, this application provides an anti-rotation bearing housing to solve the above-mentioned problems. Utility Model Content

[0006] This application provides an anti-rotation bearing housing, which aims to solve the problems mentioned in the background art, such as the existing springs being prone to elastic decay under the reciprocating compression of the clamping block, resulting in a decrease in the lateral reset capability of the clamping block, which in turn weakens the anti-rotation effect of the inner shaft and poses a risk of reverse rotation after long-term use.

[0007] To achieve the above objectives, this application provides the following technical solution: an anti-rotation bearing housing, comprising a base, an outer shaft fixedly mounted on the base, and an inner shaft rotatably inserted into the outer shaft via a circular hole. The outer shaft is provided with an anti-rotation mechanism to prevent the inner shaft from rotating. The anti-rotation mechanism includes a wedge block inserted into the outer shaft via a transverse groove, a locking groove annularly and equally spaced on the outer wall of the inner shaft and adapted to the wedge block, and a spring disposed in the transverse groove for driving the wedge block to move closer to the locking groove. Through the cooperation of the wedge block, the locking groove, and the spring, the unidirectional rotation of the inner shaft is restricted, effectively preventing its reverse rotation, ensuring the stability and reliability of power transmission during mechanical transmission, and avoiding equipment failure or safety hazards caused by reverse rotation.

[0008] The outer shaft is equipped with an adjustment mechanism for adjusting the tension of the spring. The adjustment mechanism includes a pressing plate disposed at the end of the transverse groove away from the spring. A screw, rotatably connected to the pressing plate, is threaded into the end of the transverse groove away from the wedge through a threaded hole. Through the cooperation of the screw and the pressing plate, the tension of the spring can be flexibly adjusted, ensuring that the wedge remains reliably connected to the locking groove, avoiding a decrease in anti-rotation effect due to spring elasticity decay. Simultaneously, the threaded connection structure facilitates regular inspection and replacement of the wedge and spring, improving maintenance convenience and extending the service life of the bearing housing.

[0009] Preferably, to prevent the inclined block from rotating inside the transverse groove, the cross-sections of the transverse groove, the inclined block, and the extrusion plate are all square. By designing the cross-sections of the transverse groove, the inclined block, and the extrusion plate to be square, the rotational freedom of the inclined block and the extrusion plate within the transverse groove is restricted, ensuring that the inclined block always engages with the locking groove at a fixed angle. This avoids the failure of the anti-rotation function due to the rotation of the inclined block, thereby improving structural reliability.

[0010] Preferably, the inclined block has a 30° inclined plane in the clockwise direction and a 90° right angle in the counterclockwise direction. By differentiating the design of the 30° inclined plane in the clockwise direction and the 90° right angle in the counterclockwise direction, the inner shaft can achieve smooth unidirectional rotation and rigid locking in the reverse direction. While ensuring the flexibility of clockwise rotation, it provides reliable resistance to counterclockwise rotation, meeting the requirements of unidirectional anti-rotation function in mechanical transmission.

[0011] Preferably, to facilitate the rotation of the screw, a rotating plate is fixedly connected to the end of the screw away from the extrusion plate. The rotating plate at the end of the screw increases the contact area and applied torque during manual operation, allowing the operator to easily rotate the screw without tools, thus improving the convenience and efficiency of adjusting the spring tension.

[0012] Preferably, to facilitate the fixed installation of the bearing housing in a designated position: the base is symmetrically provided with mounting holes for fixing the base in the desired position using bolts. The symmetrically provided mounting holes on the base provide a standardized fixing interface for the bearing housing, facilitating its secure installation in the designated position on the mechanical equipment using bolts. This ensures that the bearing housing remains stable under high-speed rotation or vibration conditions, preventing equipment failure due to loosening.

[0013] Preferably, to facilitate the installation of the inner shaft: both sides of the outer shaft are provided with circular grooves, and both ends of the inner shaft are fitted with sealing plates that fit the circular grooves. The sealing plates are fixedly installed in the circular grooves by screws. The cooperation between the circular grooves on both sides of the outer shaft and the sealing plates enables quick positioning and installation of the inner shaft, while simultaneously sealing the openings at both ends of the outer shaft to prevent dust and impurities from entering the bearing housing, protecting rotating parts and extending the service life of the equipment.

[0014] Preferably, to facilitate individual replacement of the wedge block or spring: a protruding rod is fixedly connected to the end of the wedge block opposite to the extrusion plate, which is inserted into the inside of the spring. The protruding rod has a U-shaped groove for the end crossbar of the spring to be inserted into. Through the cooperation of the protruding rod and the U-shaped groove, the wedge block, spring, and extrusion plate can be quickly disassembled and assembled. Damaged components can be replaced individually without disassembling the entire anti-rotation mechanism, significantly reducing maintenance costs and improving equipment repair efficiency.

[0015] This application allows for flexible adjustment of the spring tension through the cooperation of the screw and the extrusion plate, ensuring that the wedge block always maintains a reliable connection with the locking groove, thus avoiding a decrease in the anti-rotation effect due to the decay of spring elasticity. At the same time, the threaded connection structure facilitates regular inspection and replacement of the wedge block and spring, improving maintenance convenience and extending the service life of the bearing housing.

[0016] This application uses the combination of a wedge block, a locking groove, and a spring to restrict the unidirectional rotation of the inner shaft, effectively preventing it from rotating in the opposite direction, ensuring the stability and reliability of power transmission during mechanical transmission, and avoiding equipment failure or safety hazards caused by reverse rotation.

[0017] This application enables the quick assembly and disassembly of the inclined block, spring, and extrusion plate through the cooperation of the convex rod and the U-shaped groove. Damaged parts can be replaced individually without the need to completely disassemble the anti-rotation mechanism, which greatly reduces maintenance costs and improves equipment maintenance efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an anti-rotation bearing housing;

[0019] Figure 2 for Figure 1 The structural sectional view in the middle;

[0020] Figure 3 This is an exploded view of the structure of the locking groove and the inclined block;

[0021] Figure 4 This is a schematic diagram of the connection between the protruding rod and the spring.

[0022] In the picture:

[0023] 1. Base; 11. Mounting hole; 2. Outer shaft; 21. Circular groove; 22. Sealing plate; 3. Inner shaft; 4. Anti-rotation mechanism; 41. Inclined block; 42. Locking groove; 43. Spring; 5. Adjustment mechanism; 51. Extrusion plate; 52. Screw; 521. Rotary plate; 6. Protruding rod; 61. U-shaped groove. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] Example 1

[0026] This embodiment provides a bearing housing that prevents rotation, such as Figure 1-4 As shown, the bearing housing includes a base 1, an outer shaft 2 fixedly mounted on the base 1, and an inner shaft 3 rotatably inserted into the outer shaft 2 via a circular hole. The outer shaft 2 is equipped with an anti-rotation mechanism 4 to prevent the inner shaft 3 from rotating. The anti-rotation mechanism 4 includes a wedge 41 inserted into the outer shaft 2 via a transverse groove, a locking groove 42 annularly spaced on the outer wall of the inner shaft 3 and adapted to the wedge 41, and a spring 43 located within the transverse groove to drive the wedge 41 to move closer to the locking groove 42. Through the cooperation of the wedge 41, the locking groove 42, and the spring 43, the unidirectional rotation of the inner shaft 3 is restricted, effectively preventing reverse rotation and ensuring the stability and reliability of power transmission during mechanical transmission, avoiding equipment failure or safety hazards caused by reverse rotation. The spring 43 drives the wedge 41 to move towards the locking groove 42, causing the inclined surface (clockwise direction) or right-angled surface (counter-clockwise direction) of the wedge 41 to contact the locking groove 42. When the inner shaft 3 rotates in the clockwise direction, the inner wall of the locking groove 42 pushes the 30° inclined surface of the inclined block 41, causing the inclined block 41 to compress the spring 43 and move into the transverse groove, allowing the inner shaft 3 to rotate smoothly; when the inner shaft 3 attempts to rotate in the reverse direction, the inner wall of the locking groove 42 directly abuts against the 90° right angle surface of the inclined block 41, and the inclined block 41 cannot move, thus locking the inner shaft 3 and preventing rotation.

[0027] An adjustment mechanism 5 for adjusting the tension of spring 43 is provided on the outer shaft 2. The adjustment mechanism 5 includes a pressing plate 51 located at the end of the transverse groove away from spring 43, and a screw 52 rotatably connected to the pressing plate 51 via a threaded hole at the end of the transverse groove away from the inclined block 41. Through the cooperation between the screw 52 and the pressing plate 51, the tension of spring 43 can be flexibly adjusted to ensure that the inclined block 41 always maintains a reliable connection with the locking groove 42, avoiding a decrease in the anti-rotation effect due to the elastic decay of spring 43. At the same time, the threaded connection structure facilitates regular inspection and replacement of the inclined block 41 and spring 43, improving maintenance convenience and extending the service life of the bearing seat. When the screw 52 is rotated, the screw 52 drives the pressing plate 51 to move laterally along the transverse groove through the guiding action of the threaded hole. When the pressing plate 51 moves towards spring 43, spring 43 is compressed, and the tension increases; conversely, the tension decreases. By adjusting the position of the extrusion plate 51, the thrust of the spring 43 on the inclined block 41 can be precisely controlled to ensure the stability of the anti-rotation function; when maintenance is required, the extrusion plate 51 can be disassembled by rotating the screw 52 in the reverse direction, and the spring 43 and the inclined block 41 can be separated.

[0028] To prevent the inclined block 41 from rotating inside the transverse groove, the cross-sections of the transverse groove, the inclined block 41, and the extrusion plate 51 are all square. By designing the cross-sections of the transverse groove, the inclined block 41, and the extrusion plate 51 to be square, the rotational freedom of the inclined block 41 and the extrusion plate 51 within the transverse groove is restricted. This ensures that the inclined block 41 always engages with the locking groove 42 at a fixed angle (in the direction of the inclined surface and the right angle), preventing the anti-rotation function from failing due to the rotation of the inclined block 41 and improving structural reliability. The square cross-section of the transverse groove only allows the inclined block 41 and the extrusion plate 51 to slide laterally (horizontally), while restricting their rotational movement around the axis. When the locking groove 42 contacts the inclined block 41, the inclined surface or right angle of the inclined block 41 always maintains a preset direction, ensuring the stable implementation of the inclined surface guidance function during clockwise rotation and the right angle blocking function during counterclockwise rotation, without failure due to the tilting or rotation of the inclined block 41.

[0029] The inclined block 41 has a 30° inclined plane in the clockwise direction and a 90° right angle in the counterclockwise direction. By differentiating the 30° inclined plane in the clockwise direction and the 90° right angle in the counterclockwise direction of the inclined block 41, unidirectional smooth rotation of the inner shaft 3 and rigid locking in the counterclockwise direction are achieved. This ensures flexible clockwise rotation while providing reliable counterclockwise resistance, meeting the requirement for unidirectional anti-rotation function in mechanical transmission. When the inner shaft 3 rotates in the clockwise direction, the edge of the locking groove 42 slides along the 30° inclined plane of the inclined block 41. The inclination angle of the inclined plane causes the normal force on the inclined block 41 to decompose into a lateral component, pushing the inclined block 41 to compress the spring 43 and retract, allowing the locking groove 42 to pass. When the inner shaft 3 rotates in the counterclockwise direction, the edge of the locking groove 42 directly impacts the 90° right angle surface of the inclined block 41. The right angle surface cannot provide a lateral component force, and the inclined block 41 cannot move under the restriction of the spring 43 and the pressing plate 51, thus rigidly preventing the inner shaft 3 from reversing and achieving the anti-rotation function.

[0030] To facilitate the rotation of the screw 52, ​​a rotating plate 521 is fixedly connected to the end of the screw 52 furthest from the extrusion plate 51. The rotating plate 521 at the end of the screw 52 increases the contact area and torque during manual operation, allowing operators to easily rotate the screw 52 without tools, thus improving the convenience and efficiency of adjusting the tension of the spring 43. The rotating plate 521 is fixedly connected to the screw 52. When adjusting the tension of the spring 43, the operator can rotate the screw 52 by moving the rotating plate 521 with their fingers or a tool. The circular or polygonal structure of the rotating plate 521 (according to the design) provides a stable point of force application, preventing direct contact between fingers and the threaded portion of the screw 52, ​​reducing operational difficulty and the risk of hand injury, and making the adjustment process more effortless and faster.

[0031] To facilitate the secure installation of the bearing housing in a designated location, the base 1 is symmetrically provided with mounting holes 11 for bolting the base 1 to the desired position. These symmetrical mounting holes 11 provide a standardized fixing interface for the bearing housing, allowing it to be firmly installed in the designated location on the machinery using bolts. This ensures the bearing housing remains stable under high-speed rotation or vibration conditions, preventing equipment failure due to loosening. During installation, bolts are passed through the mounting holes 11 and connected to the corresponding screw holes or mounting plates on the machinery. Tightening the bolts ensures a tight fit between the base 1 and the mounting surface. The symmetrically distributed mounting holes 11 evenly distribute the radial and axial loads on the bearing housing, enhancing the shear and tensile resistance of the fixing structure and ensuring the reliability of the bearing housing under complex operating conditions.

[0032] To facilitate the installation of the inner shaft 3: Circular grooves 21 are provided on both sides of the outer shaft 2, and sealing plates 22, which are adapted to the circular grooves 21, are fitted at both ends of the inner shaft 3. The sealing plates 22 are fixedly installed in the circular grooves 21 with screws. The cooperation between the circular grooves 21 on both sides of the outer shaft 2 and the sealing plates 22 enables quick positioning and installation of the inner shaft 3, while simultaneously sealing the openings at both ends of the outer shaft 2 to prevent dust and impurities from entering the bearing housing, protecting rotating parts and extending the equipment's service life. After the inner shaft 3 passes through the circular hole of the outer shaft 2, the sealing plates 22 at both ends respectively engage with the circular grooves 21 on both sides of the outer shaft 2. The edges of the sealing plates 22 fit against the inner walls of the circular grooves 21, forming an axial limit on the inner shaft 3, preventing it from coming out of the outer shaft 2. The sealing plates 22 are fixed in the circular grooves 21 with screws. During installation, simply aligning the grooves and tightening the screws quickly completes the fixing of the inner shaft 3; at the same time, the sealing plates 22 seal the ends of the outer shaft 2, reducing the entry of external contaminants.

[0033] Example 2

[0034] Unlike Embodiment 1, to facilitate individual replacement of the wedge block 41 or spring 43, a protruding rod 6 is fixedly connected to the opposite end of the wedge block 41 and the extrusion plate 51, and is inserted into the inner side of the spring 43. The protruding rod 6 has a U-shaped groove 61 for inserting the end crossbar of the spring 43. Through the cooperation of the protruding rod 6 and the U-shaped groove 61, the wedge block 41, spring 43, and extrusion plate 51 can be quickly disassembled and assembled. Damaged components (such as spring 43 or wedge block 41) can be replaced individually without disassembling the entire anti-rotation mechanism 4, significantly reducing maintenance costs and improving equipment repair efficiency. The wedge block 41 and the extrusion plate 51 each have a protruding rod 6 at their opposite ends, and the U-shaped groove 61 on the protruding rod 6 is used to insert the end crossbar of the spring 43. During installation, the two ends of the spring 43 are inserted into the U-shaped grooves 61 of the inclined block 41 and the extrusion plate 51 respectively to complete the connection of the three components. When replacing, simply pull the crossbar of the spring 43 out of the U-shaped groove 61 to separate the inclined block 41 or the extrusion plate 51 without disassembling other parts, achieving "disassembly and replacement" and simplifying the maintenance process.

[0035] It should be noted that many of the standard parts used in this application are available on the market, while non-standard parts can be specially customized. The connection method used in this application is also a very common method in the mechanical field, and will not be described in detail here.

[0036] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A bearing housing for preventing rotation, comprising a base (1), an outer shaft (2) fixedly disposed on the base (1), and an inner shaft (3) rotatably inserted into the outer shaft (2) through a circular hole, wherein the outer shaft (2) is provided with an anti-rotation mechanism (4) for preventing the inner shaft (3) from rotating. characterized in that The anti-rotation mechanism (4) includes a wedge (41) inserted into the outer shaft (2) via a transverse groove, a locking groove (42) that is annularly and equally spaced on the outer wall of the inner shaft (3) and adapted to the wedge (41), and a spring (43) disposed in the transverse groove for driving the wedge (41) to move closer to the locking groove (42). The outer shaft (2) is provided with an adjustment mechanism (5) for adjusting the tension of the spring (43). The adjustment mechanism (5) includes a pressing plate (51) disposed in the transverse groove away from the spring (43). The end of the transverse groove away from the inclined block (41) is threadedly connected to a screw (52) that is rotatably connected to the pressing plate (51) through a threaded hole.

2. The anti-rotation chock of claim 1, wherein: The cross-sections of the transverse groove, the inclined block (41), and the extrusion plate (51) are all square.

3. The anti-rotation chock of claim 1, wherein: The inclined block (41) has a 30° inclined plane in the clockwise direction and a 90° right angle in the counterclockwise direction.

4. The anti-rotation chock of claim 1, wherein: A rotating plate (521) is fixedly connected to one end of the screw (52) away from the extrusion plate (51).

5. The anti-rotation chock of claim 1, wherein: The base (1) is symmetrically provided with mounting holes (11) for fixing the base (1) in the required position by bolts.

6. The anti-rotation chock of claim 1, wherein: Both sides of the outer shaft (2) are fitted with circular grooves (21), and both ends of the inner shaft (3) are fitted with sealing plates (22) that are compatible with the circular grooves (21). The sealing plates (22) are fixedly installed in the circular grooves (21) by screws.

7. The anti-rotation chock of claim 1, wherein: The inclined block (41) and the end opposite to the extrusion plate (51) are both fixedly connected to a protruding rod (6) inserted into the inside of the spring (43). The protruding rod (6) has a U-shaped groove (61) for inserting the end crossbar of the spring (43).

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