Bearing adjustment device

Abstract

The present invention relates to the technical field of installation tools, and specifically to a bearing adjustment device. It comprises a positioning component and an adjustment component, wherein the positioning component is fixedly arranged relative to the installation position of the installation bearing; the adjustment component is installed on the positioning component so as to be movable toward the bearing, and the adjustment component has a thrust surface that abuts against the bearing to push the bearing to move. The adjustment component is movably installed on the positioning component, and the movement of the adjustment component relative to the positioning component is controllable, which makes it possible for the thrust surface on the adjustment component to push the moving position of the bearing relative to the shaft to be controllable, thereby making the coaxiality and relative position of the bearing and the shaft after adjustment by the thrust surface accurate. The method of adjusting the bearing position using the bearing adjustment device is simple and convenient, the adjustment takes a short time, and there is no knocking or other actions that will damage the bearing, which is safer and has the advantages of high installation positioning efficiency and safety.

Description

Technical Field

[0001] The present invention relates to the technical field of installation tools, and in particular to a bearing adjustment device. Background Art

[0002] Bearings are a crucial component in modern mechanical equipment. Their primary function is to support rotating parts, reduce friction during movement, and ensure rotational accuracy. When using certain bearings, a rubber bushing is often installed between the bearing and the shaft to prevent wear on the shaft surface where the bearing is mounted and to eliminate some vibration during operation. This installation method often results in substandard bearing-shaft coaxiality or significant axial misalignment, seriously impacting transmission. For example, in the installation of a helicopter's tail drive shaft, substandard coaxiality can severely impact shaft rotation, leading to excessive vibration and even severe shaft breakage. Furthermore, significant axial misalignment can prevent the bearing from being fully secured within the clamp, as the bearing clamp bracket is fixed to the tail boom. This can lead to the serious consequence of the bearing separating from the clamp during high-speed rotation.

[0003] Therefore, for applications requiring high precision in bearing installation, the position of the bearing must be adjusted after installation. Conventional methods typically use an impact tool to impact the protruding cross-section of the bearing, making it substantially perpendicular to the shaft. A dial indicator is then used repeatedly during the impact process to measure the position until the required precision is achieved. This method achieves high precision between the bearing and the shaft, but requires repeated impacts on the bearing, removal of the dial indicator, and measurement. Adjustment is difficult, requires high operator experience, and takes a long time. Furthermore, impacts on other vulnerable parts of the bearing or the shaft can easily damage the bearing or scratch the shaft. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the prior art that bearings are difficult to install, take a long time to install, and are easily damaged, and to provide a bearing adjustment device that is simple and convenient to install, has high installation positioning efficiency and safety, takes a short installation time, and does not damage the bearings.

[0005] In order to solve the above problems, the bearing adjustment device of the present invention includes a positioning component and an adjustment component. The positioning component is fixedly arranged relative to the installation position of the bearing; the adjustment component can be installed on the positioning component and can be moved toward the bearing. The adjustment component has a thrust surface that abuts against the bearing and pushes the bearing to move.

[0006] Wherein, the positioning assembly, the adjustment assembly, the thrust surface and the bearing are coaxially arranged.

[0007] The bearing is mounted on the shaft, the positioning assembly and the adjustment assembly are cylindrical structures, sleeved on the outside of the shaft, and the positioning assembly is fixedly connected to the shaft.

[0008] One end of the positioning component is provided with an internal thread, and the end of the adjustment component connected to the positioning component is provided with an external thread screwed to the internal thread.

[0009] Wherein, the adjustment component includes an action component connected to the positioning component, and a guide component with one end connected to the action component and the other end abutting against the bearing, and the guide component is provided with the abutting surface.

[0010] In which, the two ends of the guide component have a first contraction part and a second contraction part that contract radially outward along the guide component, and a convex ring structure is formed between the first contraction part and the second contraction part. One end of the action component extends into the first contraction part and abuts against the convex ring structure, and the end surface of the second contraction part away from the first contraction part is the push surface.

[0011] There is a set gap between the inner wall of the convex ring structure and the outer wall of the shaft, and one end of the action component is in contact with the first contraction portion and is rotatable.

[0012] Wherein, the thrust surface abuts against the inner ring of the bearing.

[0013] Wherein, the guide component, and / or the action component, and / or the positioning component are formed by two semicircular structures being hingedly connected and locked after being buckled together.

[0014] Wherein, the surfaces of the guide component, and / or the action component, and / or the positioning component in contact with the shaft are provided with a polytetrafluoroethylene coating, and / or the push surface is installed with a polytetrafluoroethylene coating.

[0015] The technical solution of the present invention has the following advantages:

[0016] 1. The bearing adjustment device of the present invention includes a positioning assembly and an adjustment assembly. The positioning assembly is fixedly arranged relative to the mounting position of the bearing; the adjustment assembly is movably mounted on the positioning assembly toward the bearing, and the adjustment assembly has a thrust surface that abuts against the bearing to push the bearing to move. The mounting position is the position where the coaxiality and relative position of the bearing and the mounting member for mounting the bearing are optimal. In this application, the shaft is taken as an example, so it is the position where the coaxiality and relative position of the bearing and the shaft are optimal. The adjustment assembly is movably mounted on the positioning assembly, and the movement of the adjustment assembly relative to the positioning assembly is controllable, which makes the thrust surface on the adjustment assembly push the moving position of the bearing relative to the shaft controllable, thereby making the coaxiality and relative position of the bearing and the shaft accurate after adjustment by the thrust surface. The bearing position is adjusted using the bearing adjustment device in a simple and convenient manner, the adjustment takes a short time, and there is no knocking or other actions that will damage the bearing. It is safer and has the advantages of high installation positioning efficiency and safety.

[0017] 2. In the bearing adjustment device of the present invention, the positioning assembly, the adjustment assembly, the thrust surface and the bearing are coaxially arranged, so that the force exerted by the thrust surface on the bearing can be relatively different according to the position of the bearing relative to the axis. For example, the portion inclined toward the adjustment structure is subjected to a larger force from the thrust surface, which forces the inclined portion to move quickly until the thrust surface is evenly abutted against the bearing.

[0018] 3. In the bearing adjustment device of the present invention, the screw connection between the positioning component and the adjustment component is simple and has high coaxiality, and the moving distance of the adjustment component relative to the positioning component is controllable, thereby making the relative position of the bearing after the bearing adjustment device adjusts it accurate.

[0019] 4. In the bearing adjustment device of the present invention, a set gap is provided between the inner wall of the convex ring structure and the outer wall of the shaft, which can reduce the friction force when the guide assembly moves and the influence of the friction force on the movement of the action assembly.

[0020] 5. The bearing adjustment device of the present invention has two semicircular structures that are hingedly connected and locked after being buckled. The structure is simple and easy to install. In addition, the installation process will not be restricted or affected by the shaft length, shaft setting position, or whether the shaft is assembled.

[0021] 6. The bearing adjustment device of the present invention can reduce the friction between the guide assembly and the actuating assembly and protect the outer wall of the bearing from wear due to the lubricating and non-stick properties of the polytetrafluoroethylene coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 Schematic diagram of the degree of freedom analysis of the bearing;

[0024] Figure 2 This is a schematic diagram of the bearing adjustment device of the present invention in use;

[0025] Figure 3 A schematic structural diagram of a three-dimensional view of a bearing adjustment device according to the present invention;

[0026] Figure 4 It is a structural schematic diagram of the positioning assembly of the present invention;

[0027] Figure 5 It is a structural diagram of the action component of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the guide assembly of the present invention;

[0029] Figure 7 It is a structural schematic diagram of the locking device of the present invention;

[0030] Description of reference numerals:

[0031] 1-positioning assembly; 2-thrust surface; 3-internal thread; 4-external thread; 5-action assembly; 6-guide assembly; 7-first contraction portion; 8-second contraction portion; 9-convex ring structure; 10-handle; 11-protective member; 12-lock body; 13-panel; 14-lock head; 15-knob; 16-shaft; 17-bearing; 18-locking device. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] Adjusting bearing 17 can be analyzed using methods similar to determining the position of a rigid body in a rectangular coordinate system. Before positioning is taken, bearing 17 behaves like a rigid body in a free space state; each position is arbitrary and uncertain. This uncertainty in spatial position can be divided into the following six independent aspects based on the three-dimensional coordinates:

[0035] ① The uncertainty of the position along the x-axis 16 is called the uncertainty along the x-axis 16;

[0036] ② The uncertainty of the position along the y-axis 16 is called the uncertainty along the y-axis 16;

[0037] ③ The uncertainty of the position along the z-axis 16 is called the uncertainty along the z-axis 16;

[0038] ④ The uncertainty of the position around the x-axis 16 is called the uncertainty around the x-axis 16;

[0039] ⑤ The uncertainty of the position around the y-axis 16 is called the uncertainty around the y-axis 16;

[0040] ⑥ The uncertainty of the position around the z-axis 16 is called the uncertainty around the z-axis 16;

[0041] Bearing 17 has positional uncertainty in all six directions. Adjusting the uncertainty in one direction will cause the bearing 17's position to change in that direction. The first and third degrees of freedom are primarily limited by the bushing between bearing 17 and shaft 16. When repositioning bearing 17, the tooling primarily adjusts the second, fourth, and sixth degrees of freedom. While maintaining the fifth degree of freedom as close to zero as possible, this prevents frictional damage caused by relative sliding between bearing 17 and guide assembly 6.

[0042] When the guide assembly 6 is attached to the inner ring of the bearing 17, the ②, ④, and ⑥ degrees of freedom of the bearing 17 can be adjusted simultaneously. When the bearing adjustment device applies an adjustment force to the bearing 17, it can achieve the functions of adjustment, installation, and positioning.

[0043] The bearing adjustment device in this embodiment, such as Figures 1-6As shown, it includes a positioning component 1 and an adjustment component, and the adjustment component includes an action component 5 and a guide component 6.

[0044] The positioning assembly 1 is fixed relative to the mounting position of the bearing 17. The mounting position is the position where the bearing 17 and the mounting part for mounting the bearing 17 are coaxial at 16 degrees and have the best relative position. Since the bearing 17 is generally connected to the shaft 16, in this embodiment, the bearing 17 is installed on the shaft 16 as an example. The positioning assembly 1 and the adjustment assembly are cylindrical structures, which are sleeved on the outside of the shaft 16. The positioning assembly 1 is fixedly connected to the shaft 16. The positioning assembly 1, the adjustment assembly, the thrust surface 2 and the bearing 17 are coaxially arranged with the shaft 16. Of course, when the bearing 17 is installed on other mounting parts, the bearing adjustment device in this embodiment can also be used. However, the positioning assembly 1 needs to select other structures for installation. When the positioning assembly 1 is installed, the mounting position can be found by referring to the shaft 16. Since the axis of the shaft 16 and the axis of the bearing adjustment structure are perpendicular to the cross-section of the bearing 17, the accurate coincidence of the axes can achieve the effect of stable positioning of the positioning assembly 1.

[0045] In this embodiment, the positioning assembly 1 comprises two hinged semicircular structures that lock into a cylindrical shape when fastened together. The hinge can be formed using hinges, such as hinges with hinged hinges. A convex ring-shaped protective member 11, projecting radially inward from the positioning assembly 1, is positioned in the center of the semicircular structure. This protective member 11 maintains the position between the positioning assembly 1 and the shaft 16 and prevents the positioning assembly 1 from abrading the outer wall of the shaft 16. In this embodiment, the protective member 11 is made of polytetrafluoroethylene (PTFE). The PTFE coating can be configured as a block or film depending on the application requirements. PTFE coatings exhibit excellent non-stick properties even in very thin films. PTFE coatings have a low coefficient of friction, varying under load and sliding, but the coefficient of friction is only between 0.05 and 0.15. Under high loads, they exhibit excellent wear resistance. In other words, under certain loads, PTFE coatings offer the dual advantages of wear resistance and non-stick properties.

[0046] The actuating assembly 5 is mounted on the positioning assembly 1 so as to be movable toward the bearing 17. In this embodiment, the actuating assembly 5 and the positioning assembly 1 are threadedly connected. Specifically, one end of the positioning assembly 1 is provided with an internal thread 3, and the end of the actuating assembly 5 connected to the positioning assembly 1 is provided with an external thread 4 that is threadedly connected to the internal thread 3. The pitch and stroke settings are determined based on the actual use. For example, if the pitch is 1.15mm and the stroke is 15mm, the external thread 4 should be set to meet the maximum stroke of the positioning.

[0047] The actuating assembly 5 is also hingedly connected by two semicircular structures, which lock into a cylindrical structure when fastened together. A convex ring-shaped protective member 11 is provided at the inner center of the semicircular structure, projecting radially inward along the positioning assembly 1. This protective member 11 maintains contact between the positioning assembly 1 and the shaft 16, but does not position the shaft. It can move toward the bearing 17 during rotation, preventing the actuating assembly 5 from abrading the outer wall of the shaft 16. In this embodiment, the protective member 11 is made of polytetrafluoroethylene (PTFE). The polytetrafluoroethylene can be configured in a block or film-like manner depending on the application requirements. External threads 4 are provided at one end of the convex ring-shaped protective member 11. To facilitate the rotation of the actuating assembly 5 relative to the positioning assembly 1 and increase the torque, a handle 10 is provided on the actuating assembly 5 for holding. The handle 10 can be a conventional handle 10. Four handles 10 are provided along the outer periphery of the actuating assembly 5, one of which can be used to lock the actuating assembly 5 when disassembled. Such handles 10 are known in the prior art and will not be described in detail here.

[0048] One end of the guide assembly 6 is connected to the action assembly 5, and the other end has a push surface 2 that abuts the bearing 17. The action assembly 5 pushes the guide assembly 6 toward the bearing 17 to achieve the effect of adjusting and positioning the bearing 17. The two ends of the guide assembly 6 have a first contraction portion 7 and a second contraction portion 8 that contract radially outward along the guide assembly 6. A convex ring structure 9 is formed between the first contraction portion 7 and the second contraction portion 8. One end of the action assembly 5 extends into the first contraction portion 7 and abuts against the convex ring structure 9. It is in contact with the first contraction portion 7 and can rotate, and can ensure that there is a set gap between the inner wall of the convex ring structure 9 and the outer wall of the shaft 16; the end surface of the second contraction portion 8 away from the first contraction portion 7 is the push surface 2. The push surface 2 abuts against the inner ring of the bearing 17. When the action assembly 5 rotates relative to the positioning assembly 1 to drive the guide assembly 6 to abut against the bearing 17, the guide assembly 6 and the bearing 17 are kept as nearly as possible from rotating.

[0049] The guide assembly 6 is also composed of two hinged semicircular structures that lock into a cylindrical structure when engaged. Protective members 11 are provided on the inner side of the convex ring structure 9 and on the abutting surface 2 to prevent the actuating assembly 5 from abrading the outer wall of the shaft 16. Protective members 11 can also be made of polytetrafluoroethylene (PTFE). The PTFE can be configured in a block or film-like form based on specific needs, such as in a block or film-like form.

[0050] The length of each structural part of the guide assembly 6 along the axial direction of the shaft 16 can be set according to usage requirements, such as the length of the second contraction part 8 is 3 cm, and the length of the first contraction part 7 is 2 cm.

[0051] The locking mechanism described above is locking device 18. In this embodiment, locking device 18 is mounted centrally on the surfaces of guide assembly 6 and positioning assembly 1 to provide a secure connection. The degree of locking can be adjusted based on actual conditions, eliminating the need for additional tools and making it convenient for maintenance personnel. Locking device 18 consists of a lock body 12, a knob 15, a lock head 14, and a panel 13. Panel 13 and lock body 12 are positioned on two semicircular structures. To use, simply place lock body 12 on panel 13 and tighten knob 15, making operation simple and convenient.

[0052] The nested arrangement of the guide assembly 6, positioning assembly 1, and actuating assembly 5 also facilitates installation. For example, during installation, the order is positioning assembly 1, then guide assembly 6, and finally actuating assembly 5. During adjustment, actuating assembly 5 is rotated, which pushes guide assembly 6 to move, causing it to abut against the inner ring of bearing 17, thereby adjusting the position of bearing 17 to the desired position.

[0053] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A bearing adjustment device, characterized in that: include, A positioning assembly (1) is fixedly arranged relative to a mounting position of the mounting bearing (17); An adjustment component is mounted on the positioning component (1) and can be moved toward the bearing (17); the adjustment component has a push surface (2) that abuts against the bearing (17) to push the bearing (17) to move; The adjustment assembly comprises an action assembly (5) connected to the positioning assembly (1), and a guide assembly (6) having one end connected to the action assembly (5) and the other end abutting against the bearing (17), wherein the guide assembly (6) is provided with the abutting surface (2); The guide assembly (6), and / or the action assembly (5), and / or the positioning assembly (1) are formed by two semicircular structures being hingedly connected and locked after being buckled together; The two ends of the guide assembly (6) have a first contraction portion (7) and a second contraction portion (8) that contract radially outward along the guide assembly (6), a convex ring structure (9) is formed between the first contraction portion (7) and the second contraction portion (8), one end of the action assembly (5) extends into the first contraction portion (7) and abuts against the convex ring structure (9), and the end surface of the second contraction portion (8) away from the first contraction portion (7) is the push surface (2); The positioning assembly (1), the adjustment assembly, the thrust surface (2) and the bearing (17) are coaxially arranged (16); There is a set gap between the inner wall of the convex ring structure (9) and the outer wall of the shaft (16), and one end of the action component (5) is in contact with the first contraction portion (7) and is rotatable.

2. The bearing adjustment device according to claim 1, characterized in that: The bearing (17) is mounted on the shaft (16); the positioning assembly (1) and the adjustment assembly are cylindrical structures, sleeved on the outside of the shaft (16); and the positioning assembly (1) is fixedly connected to the shaft (16).

3. The bearing adjustment device according to any one of claims 1 to 2, characterized in that: One end of the positioning component (1) is provided with an internal thread (3), and one end of the adjustment component connected to the positioning component (1) is provided with an external thread (4) threadedly connected to the internal thread (3).

4. The bearing adjustment device according to any one of claims 1-2, characterized in that: The thrust surface (2) abuts against the inner ring of the bearing (17).

5. The bearing adjustment device according to any one of claims 1 to 2, characterized in that: The surfaces of the guide component (6), and / or the action component (5), and / or the positioning component (1) in contact with the shaft (16) are provided with a polytetrafluoroethylene coating, and / or the push surface (2) is provided with a polytetrafluoroethylene coating.

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