Anti-locking thrust ball bearing for crane hook

Abstract

The utility model discloses an anti-locking thrust ball bearing for a crane hook, which comprises an upper shaft sleeve, a retainer and a lower shaft sleeve, and both the upper shaft sleeve and the lower shaft sleeve are provided with bulges; steel balls are mounted between the bulges and the retainer; a plurality of lubricating holes are formed in the top ends of the protrusions and communicate with one another through communicating structures. An auxiliary lubricating hole connected with the communicating structure is formed in the inner wall of the bulge; and heat dissipation holes are annularly formed in the retainer. The bearing has the beneficial effects that the design of the main lubricating hole and the auxiliary lubricating hole is adopted, and the main lubricating hole and the auxiliary lubricating hole are communicated with each other through the X-shaped through holes, so that the lubricating efficiency and speed are greatly improved, the use of the bearing is ensured, and the lubricating effect is better; and the heat dissipation design is adopted on the retainer, so that the lubrication is ensured, heat dissipation can be performed through the inner hole and the outer hole, and the normal use of the bearing is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of ball bearings, in particular to an anti-seizure thrust ball bearing for a crane hook. Background Art

[0002] Thrust ball bearings are designed to withstand thrust loads when running at high speeds. They are composed of a washer-shaped ring with a raceway groove for rolling balls. Thrust ball bearings are divided into two types: flat base pad type and self-aligning spherical seat pad type. In addition, this type of bearing can withstand axial loads but not radial loads.

[0003] During the use of existing ball bearings, due to factors such as insufficient lubrication or heat dissipation, the bearing sleeve is easily deformed, causing the ball to get stuck or the ball to crack. The shaft rod is easily broken and deformed due to sudden sticking. Therefore, an anti-sticking thrust ball bearing for a crane hook is proposed. Summary of the invention

[0004] The utility model aims to provide an anti-seizure thrust ball bearing for a crane hook to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An anti-seizure thrust ball bearing for a crane hook comprises an upper sleeve, a retainer and a lower sleeve, wherein both the upper sleeve and the lower sleeve are provided with protrusions;

[0007] A steel ball is installed between the protrusion and the retaining frame;

[0008] The top of the protrusion is provided with a plurality of lubrication holes, and the lubrication holes are interconnected through a connecting structure;

[0009] The inner wall of the protrusion is provided with a secondary lubrication hole connected to the connecting structure;

[0010] The retaining frame ring is provided with heat dissipation holes.

[0011] Furthermore, a groove for installing a steel ball is provided at the bottom end of the protrusion.

[0012] Furthermore, the top and bottom ends of the retaining frame are both provided with frame grooves for installing steel balls.

[0013] Furthermore, the connecting structure is an X-shaped through hole, and the auxiliary lubrication hole is connected to the central intersection of the X-shaped through hole.

[0014] Furthermore, the heat dissipation hole comprises an outer hole arranged on the outer wall of the retaining frame and an inner hole arranged on the inner wall of the retaining frame, and both the outer hole and the inner hole are connected to the frame groove.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The design of dual lubrication holes, main and auxiliary, are interconnected through X-shaped through holes, which greatly improves the lubrication efficiency and speed, ensures the use of bearings, and has better lubrication effect;

[0017] The heat dissipation design is adopted on the cage. While ensuring lubrication, heat can be dissipated through the inner and outer holes to ensure the normal use of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the internal structure of the cage of the utility model;

[0021] Figure 4 It is a schematic diagram of the internal structure of the shaft sleeve of the utility model. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] Embodiment 1:

[0024] See also Figure 1-4 , the utility model provides a technical solution:

[0025] A thrust ball bearing for crane hooks that prevents seizure comprises an upper sleeve 1, a retaining frame 3 and a lower sleeve 4. Both the upper sleeve 1 and the lower sleeve 4 are provided with protrusions 2. Meanwhile, steel balls 7 are installed between the protrusions 2 and the retaining frame 3 for bearing rolling. To facilitate the lubrication of the bearings, a plurality of lubrication holes 5 are provided at the top of the protrusions 2. Meanwhile, the lubrication holes 5 are interconnected through a connecting structure to ensure the connection between the lubrication holes 5, thereby improving the lubrication effect and avoiding the lubrication effect being affected by clogging of a single hole. An auxiliary lubrication hole 6 connected to the connecting structure is provided on the inner wall of the protrusion 2 to further improve the lubrication effect. Oil outlet holes are added, and heat dissipation holes are provided on the retaining frame 3 ring for heat dissipation.

[0026] like Figure 4 As shown:

[0027] A groove 10 for mounting the steel ball 7 is provided at the bottom end of the protrusion 2 , and frame grooves for mounting the steel ball 7 are provided at the top and bottom ends of the retaining frame 3 to ensure the normal rolling of the steel ball 7 .

[0028] like Figure 4 As shown:

[0029] The connecting structure is set as an X-shaped through hole 9, so that each lubrication hole 5 is connected by two outlet X-shaped through holes 9, which improves the flow efficiency of the lubricating oil and facilitates lubrication. At the same time, the auxiliary lubrication hole 6 is connected with the central intersection of the X-shaped through hole 9 to facilitate the oil outflow from the auxiliary lubrication hole 6 for lubrication.

[0030] like Figure 3 As shown:

[0031] The heat dissipation holes include an outer hole 8 provided on the outer wall of the retaining frame 3 and an inner hole 81 provided on the inner wall of the retaining frame 3. The outer hole 8 and the inner hole 81 are connected to the frame groove to ensure that the internal heat can be discharged to the outside through the outer hole 8 on the frame groove.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-seizure thrust ball bearing for a crane hook, comprising an upper sleeve (1), a retainer (3) and a lower sleeve (4), characterized in that: The upper shaft sleeve (1) and the lower shaft sleeve (4) are both provided with a protrusion (2); A steel ball (7) is installed between the protrusion (2) and the retaining frame (3); A plurality of lubrication holes (5) are provided at the top of the protrusion (2), and the lubrication holes (5) are interconnected via a connecting structure; The inner wall of the protrusion (2) is provided with a secondary lubrication hole (6) connected to the communication structure; The retaining frame (3) is provided with heat dissipation holes.

2. The anti-seizure thrust ball bearing for a crane hook according to claim 1, characterized in that: The bottom end of the protrusion (2) is provided with a groove (10) for mounting a steel ball (7).

3. The anti-seizure thrust ball bearing for crane hook according to claim 1, characterized in that: The top and bottom ends of the retaining frame (3) are both provided with frame grooves for installing steel balls (7).

4. The anti-seizure thrust ball bearing for a crane hook according to claim 1, characterized in that: The connecting structure is an X-shaped through hole (9), and the auxiliary lubrication hole (6) is connected to the central intersection of the X-shaped through hole (9).

5. The anti-seizure thrust ball bearing for crane hook according to claim 3, characterized in that: The heat dissipation hole comprises an outer hole (8) provided on the outer wall of the retaining frame (3) and an inner hole (81) provided on the inner wall of the retaining frame (3); the outer hole (8) and the inner hole (81) are both connected to the frame groove.

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