Mounting tool for double-row self-aligning roller bearing

Abstract

The utility model discloses a double-row self-aligning roller bearing mounting tool, which belongs to the technical field of bearing mounting and comprises a tool body. The tool body comprises a lead screw, the lead screw is sequentially sleeved with a steel sleeve and a through cover, the outer side of the lead screw is in threaded connection with a hexagon nut, the through cover is located at the open end of the steel sleeve, and the hexagon nut is located on the side, away from the through cover, of the steel sleeve. The hexagonal nut matched with the lead screw rotates on the lead screw to generate displacement, the steel sleeve and the barrel cover are driven to move in the axial direction of the lead screw, acting force is generated on the double-row self-aligning roller bearing body, the through cover is mainly used for enabling the double-row self-aligning roller bearing body to be evenly stressed when the double-row self-aligning roller bearing body is installed, and the service life of the double-row self-aligning roller bearing body is prolonged. The tool is simple in structure, low in operation difficulty, low in installation cost and small in damage to the double-row self-aligning roller bearing body.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing installation, in particular to a double-row spherical roller bearing installation tool. Background Art

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy.

[0003] In the prior art, a Chinese utility model with publication number CN218137780U discloses a bearing installation tool comprising a column tube with a handle connected to the side wall of the column tube; a striking assembly connected to the right end of the column tube; a mounting head assembly connected to the left end of the column tube; the mounting head assembly contacts the side wall of the bearing; a hammer strikes the striking assembly; the striking assembly includes a nylon striking head, the left end of which is connected to the right inner wall of the column tube, and the hammer strikes the nylon striking head; the mounting head assembly includes a bearing mounting head, the right end of which is connected to the left end of the column tube, and the left end of which contacts the side wall of the bearing. The present invention aims to overcome the existing drawbacks and provide a bearing installation tool. By attaching striking heads for different bearing models to the bearing striking tool, different bearing models can be easily installed.

[0004] When fitters complete mechanical installation work, self-aligning bearings often need to be installed with a tight fit. The traditional installation method is to put the bearing on the end of the shaft, and then apply pressure to the bearing by knocking, so that the bearing gradually moves on the shaft. However, bearings are high-precision parts. When knocking the bearings, it is not only easy to damage the bearings, but also easy to cause uneven force on the bearings and tilt, affecting the installation of the bearings. Generally, professional equipment and methods such as electromagnetic heaters, oil-boiled heating bearings or hydraulic drive devices are required, which are difficult to operate and costly. Utility Model Content

[0005] The purpose of the utility model is to provide a double-row spherical roller bearing installation tool, which can solve the problems raised in the above-mentioned background technology by rotating the hexagonal nut installed on the outside of the screw rod, so that the hexagonal nut moves on the outside of the screw rod, and then pushing the steel sleeve to apply uniform pressure to the through cover, so that the double-row spherical roller bearing body moves on the installation shaft. The surface integrity of the double-row spherical roller bearing body is ensured, and the operation difficulty and installation cost are low.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a double-row spherical roller bearing installation tool, comprising: a tool body; the tool body includes a screw rod, on which a steel sleeve and a through cover are sequentially sleeved, the outer side of the screw rod is threadedly connected to a hexagonal nut, the through cover is located at one end of the steel sleeve opening, and the hexagonal nut is located on the side of the steel sleeve away from the through cover; it also includes a mounting shaft and a double-row spherical roller bearing body, the screw rod is threadedly connected to the center of the end of the mounting shaft, and the double-row spherical roller bearing body is sleeved on the outer side of the screw rod and located between the through cover and the mounting shaft.

[0007] Preferably, a through hole is opened at the center of the steel casing, the inner diameter of the through hole is larger than the outer diameter of the screw rod, one end of the screw rod passes through the steel casing and extends outward from the through hole, and is threadedly connected to the hexagonal nut.

[0008] Preferably, a plane bearing is further sleeved on the outer side of the screw rod, and the plane bearing is located between the hexagonal nut and the steel sleeve, and both end surfaces of the plane bearing are respectively in contact with the hexagonal nut and the steel sleeve.

[0009] Preferably, the inner diameter of the plane bearing is larger than the diameter of the screw rod and smaller than the distance between the parallel surfaces of the hexagonal nut.

[0010] Preferably, the outer diameter of the through cover is the same as the outer diameter of the double row spherical roller bearing body, and the two sides of the through cover are respectively in contact with the steel sleeve and the end face of the double row spherical roller bearing body, so as to ensure uniform force on the double row spherical roller bearing body during installation.

[0011] Preferably, the outer diameter of the steel sleeve is smaller than the outer diameter of the double-row spherical roller bearing body.

[0012] Preferably, a threaded hole is formed at the end of the mounting shaft, and one end of the screw rod passes through the through cover and the double-row spherical roller bearing body in sequence and extends into the mounting shaft, and is threadedly connected to the threaded hole.

[0013] Preferably, a circular hole is opened at the center of the through cover, and the size of the circular hole is larger than the inner diameter of the double-row spherical roller bearing body.

[0014] The axes of the steel sleeve, the through cover, the double-row spherical roller bearing body and the mounting shaft are all on the same axis as the axis of the screw rod.

[0015] The diameter of the steel casing is 180 mm, and the diameter of the screw rod is 16 mm.

[0016] The present application provides a double-row spherical roller bearing installation tool, comprising: a tool body; the tool body including a screw, a steel sleeve and a through-hole cap sequentially sleeved on the screw, a hexagonal nut threadedly connected to the outer side of the screw, the through-hole cap located at one end of the steel sleeve, and the hexagonal nut located on the side of the steel sleeve away from the through-hole cap; and a mounting shaft and a double-row spherical roller bearing body. The screw is threadedly connected to the center of the end of the mounting shaft, and the double-row spherical roller bearing body is sleeved on the outer side of the screw and located between the through-hole cap and the mounting shaft. Compared with the prior art, the present invention generates a force on the double-row spherical roller bearing body by rotating the hexagonal nut matched with the screw on the screw, driving the steel sleeve and the barrel cap to move axially in the screw, while the through-hole cap primarily serves to ensure uniform force distribution during installation of the double-row spherical roller bearing body, thereby preventing stress concentration from damaging the bearing. Furthermore, the tool has a simple structure, low operation difficulty, low installation cost, and minimal damage to the double-row spherical roller bearing body. At the same time, by limiting the diameter of the circular hole at the center of the through cover, it is convenient for the through cover to push the double-row spherical roller bearing body to slide a long distance on the mounting shaft, so as to prevent the through cover from directly colliding with the end of the mounting shaft and being unable to apply pressure to the double-row spherical roller bearing body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the split three-dimensional structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the tool body of the utility model.

[0020] Numbers in the figure: 1, screw; 2, steel casing; 3, through cover; 4, hexagonal nut; 5, mounting shaft; 6, double-row spherical roller bearing body; 7, through hole; 8, plane bearing; 9, threaded hole; 10, round hole. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The utility model provides Figures 1 to 3The double-row spherical roller bearing installation tool shown includes: a tool body; the tool body includes a screw rod 1, on which a steel sleeve 2 and a through cover 3 are sequentially sleeved, the outer side of the screw rod 1 is threadedly connected to a hexagonal nut 4, the through cover 3 is located at one end of the opening of the steel sleeve 2, and the hexagonal nut 4 is located on the side of the steel sleeve 2 away from the through cover 3; it also includes a mounting shaft 5 and a double-row spherical roller bearing body 6, the screw rod 1 is threadedly connected to the center of the end of the mounting shaft 5, and the double-row spherical roller bearing body 6 is sleeved on the outer side of the screw rod 1 and located between the through cover 3 and the mounting shaft 5.

[0023] The hexagonal nut 4 matched with the screw rod 1 rotates on the screw rod 1 to generate displacement, driving the steel sleeve 2 and the barrel cover to move in the axial direction of the screw rod 1, generating a force on the double-row spherical roller bearing body 6. The main function of the through cover 3 is to ensure that the double-row spherical roller bearing body 6 can be evenly stressed during installation, avoiding stress concentration and damage to the bearing. In addition, the tool has a simple structure, low operation difficulty, low installation cost, and little damage to the double-row spherical roller bearing body 6.

[0024] A through hole 7 is opened at the center of the steel casing 2. The inner diameter of the through hole 7 is larger than the outer diameter of the screw rod 1. One end of the screw rod 1 passes through the steel casing 2 and extends outward from the through hole 7, and is threadedly connected to the hexagonal nut 4. The setting of the through hole 7 makes it convenient for the screw rod 1 to pass through the steel casing 2, and the size of the through hole 7 only needs to meet the normal penetration of the screw rod 1.

[0025] It is worth noting that the lengths of the screw rod 1 and the steel casing 2 are selected according to the actual installation situation, and an appropriate length is sufficient. At the same time, the steel casing 2 can be selected according to the installation environment.

[0026] In this embodiment, a plane bearing 8 is further sleeved on the outer side of the screw rod 1. The plane bearing 8 is located between the hexagonal nut 4 and the steel sleeve 2, and the two end faces of the plane bearing 8 are respectively in contact with the hexagonal nut 4 and the steel sleeve 2. The inner diameter of the plane bearing 8 is larger than the diameter of the screw rod 1 and smaller than the distance between the parallel surfaces of the hexagonal nut 4. Through the setting of the plane bearing 8, it is convenient to isolate the hexagonal nut 4 and the steel sleeve 2 to prevent the hexagonal nut 4 from rotating and driving the steel sleeve 2 to rotate, which may easily cause the steel sleeve 2 to drive the through cover 3 to rotate and cause scratches on the surface of the double-row spherical roller bearing body 6. At the same time, it plays a role in preventing the steel sleeve 2 from tilting. At the same time, the size of the plane bearing 8 is limited to ensure that the plane bearing 8 plays a supporting and isolating role.

[0027] It is worth noting that the outer diameter of the through cover 3 is the same as the outer diameter of the double-row spherical roller bearing body 6, and the two sides of the through cover 3 are respectively in contact with the end faces of the steel sleeve 2 and the double-row spherical roller bearing body 6, so as to ensure that the double-row spherical roller bearing body 6 is evenly stressed during installation. The outer diameter of the steel sleeve 2 is smaller than the outer diameter of the double-row spherical roller bearing body 6. By limiting the size of the through cover 3, it is convenient to evenly stress the double-row spherical roller bearing body 6.

[0028] A threaded hole 9 is provided at the end of the mounting shaft 5. One end of the screw rod 1 passes through the through cover 3 and the double-row spherical roller bearing body 6 in sequence and extends into the mounting shaft 5, and is threadedly connected to the threaded hole 9. The setting of the threaded hole 9 makes it convenient and stable to connect the screw rod 1 to the mounting shaft 5, and at the same time facilitates the disassembly and assembly of the screw rod 1.

[0029] Furthermore, a circular hole 10 is provided at the center of the through cover 3. The size of the circular hole 10 is larger than the inner diameter of the double-row spherical roller bearing body 6. By limiting the diameter of the circular hole 10 at the center of the through cover 3, it is convenient for the through cover 3 to push the double-row spherical roller bearing body 6 to slide over a long distance on the mounting shaft 5, so as to prevent the through cover 3 from sliding directly on the mounting shaft 5.

[0030] The end of the mounting shaft 5 contacts the end of the mounting shaft 5, and no pressure can be applied to the double-row spherical roller bearing body 6.

[0031] The axes of the steel casing 2, the through cover 3, the double-row spherical roller bearing body 6 and the mounting shaft 5 are all coaxial with the axis of the screw rod 1; the diameter of the steel casing 2 is 180 mm, and the diameter of the screw rod 1 is 16 mm.

[0032] During specific use, place the double-row spherical roller bearing body 6 on the end of the mounting shaft 5, try to keep it horizontal, then thread the screw rod 1 into the threaded hole 9 on the mounting shaft 5 to connect the screw rod 1 to the mounting shaft 5, then put the through cover 3, steel sleeve 2 and plane bearing 8 on the outside of the screw rod 1 in turn, adjust the position of the through cover 3 and steel sleeve 2, then rotate the hexagonal nut 4 from the end of the screw rod 1 to install it on the screw rod 1, use a wrench to rotate the hexagonal nut 4, so that the hexagonal nut 4 pushes the plane bearing 8, steel sleeve 2 and through cover 3 on the screw rod 1 to move, apply pressure to the double-row spherical roller bearing body 6 through the through sleeve, and push the double-row spherical roller bearing body 6 onto the mounting shaft 5 until it reaches the specified position.

[0033] The present application provides a double-row spherical roller bearing installation tool, including: a tool body; the tool body includes a screw rod 1, on which a steel sleeve 2 and a through cover 3 are sequentially sleeved, the outer side of the screw rod 1 is threadedly connected to a hexagonal nut 4, the through cover 3 is located at one end of the opening of the steel sleeve 2, and the hexagonal nut 4 is located on the side of the steel sleeve 2 away from the through cover 3; it also includes an installation shaft 5 and a double-row spherical roller bearing body 6, the screw rod 1 is threadedly connected to the center of the end of the installation shaft 5, and the double-row spherical roller bearing body 6 is sleeved on the outer side of the screw rod 1 and located between the through cover 3 and the installation shaft 5. The utility model generates displacement by rotating the hexagonal nut 4 matched with the screw rod 1 on the screw rod 1, driving the steel sleeve 2 and the barrel cover to move in the axial direction of the screw rod 1, generating a force on the double-row spherical roller bearing body 6. The main function of the through cover 3 is to ensure that the double-row spherical roller bearing body 6 can be evenly stressed during installation, avoiding stress concentration and damage to the bearing. In addition, the tool has a simple structure, low operation difficulty, low installation cost, and little damage to the double-row spherical roller bearing body 6.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double row spherical roller bearing installation tool, characterized in that: include: Tool body; The tool body comprises a screw rod (1), a steel sleeve (2) and a through cover (3) are sequentially sleeved on the screw rod (1), a hexagonal nut (4) is threadedly connected to the outer side of the screw rod (1), the through cover (3) is located at one end of the opening of the steel sleeve (2), and the hexagonal nut (4) is located at a side of the steel sleeve (2) away from the through cover (3); It also includes a mounting shaft (5) and a double-row spherical roller bearing body (6), wherein the screw rod (1) is threadedly connected to the center of the end of the mounting shaft (5), and the double-row spherical roller bearing body (6) is sleeved on the outside of the screw rod (1) and located between the through cover (3) and the mounting shaft (5).

2. The double-row spherical roller bearing installation tool according to claim 1, characterized in that: A through hole (7) is provided at the center of each of the steel sleeves (2). The inner diameter of the through hole (7) is larger than the outer diameter of the screw rod (1). One end of the screw rod (1) passes through the steel sleeve (2) and extends outward from the through hole (7) and is threadedly connected to the hexagonal nut (4).

3. The double-row spherical roller bearing installation tool according to claim 1, characterized in that: A plane bearing (8) is also sleeved on the outer side of the screw rod (1), and the plane bearing (8) is located between the hexagonal nut (4) and the steel sleeve (2), and the two end surfaces of the plane bearing (8) are respectively in contact with the hexagonal nut (4) and the steel sleeve (2).

4. The double-row spherical roller bearing installation tool according to claim 3, characterized in that: The inner diameter of the plane bearing (8) is larger than the diameter of the screw rod (1) and smaller than the distance between the parallel surfaces of the hexagonal nut (4).

5. The double-row spherical roller bearing installation tool according to claim 1, characterized in that: The outer diameter of the through cover (3) is the same as the outer diameter of the double-row spherical roller bearing body (6), and both sides of the through cover (3) are respectively in contact with the end faces of the steel sleeve (2) and the double-row spherical roller bearing body (6), so as to ensure that the double-row spherical roller bearing body (6) is evenly stressed during installation.

6. The double-row spherical roller bearing installation tool according to claim 1, characterized in that: The outer diameter of the steel sleeve (2) is smaller than the outer diameter of the double-row spherical roller bearing body (6).

7. The double-row spherical roller bearing installation tool according to claim 1, characterized in that: A threaded hole (9) is provided at the end of the installation shaft (5), and one end of the screw rod (1) passes through the through cover (3) and the double-row spherical roller bearing body (6) in sequence and extends into the installation shaft (5), and is threadedly connected to the threaded hole (9).

8. The double-row spherical roller bearing installation tool according to claim 1, characterized in that: A circular hole (10) is provided at the center of the through cover (3), and the size of the circular hole (10) is larger than the inner diameter of the double-row spherical roller bearing body (6).

9. The double-row spherical roller bearing installation tool according to claim 1, characterized in that: The axes of the steel sleeve (2), the through cover (3), the double-row spherical roller bearing body (6) and the mounting shaft (5) are all on the same axis as the axis of the screw rod (1).

10. The double-row spherical roller bearing installation tool according to claim 1, characterized in that: The diameter of the steel casing (2) is 180 mm, and the diameter of the screw rod (1) is 16 mm.

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