Rotary eccentric bearing unit

Abstract

The utility model discloses a rotary eccentric bearing unit, which relates to the technical field of bearing units, and comprises an eccentric sleeve, a bearing unit structure is arranged on the eccentric sleeve, the bearing unit structure comprises a lug-free clamp spring, a lug-free clamp spring and a lug-free clamp spring, and the lug-free clamp spring is arranged on the inner side of the eccentric sleeve; the needle bearing outer steel sleeve is arranged on one side of the lug-free clamp spring; the needle bearing is arranged on the inner side of the needle bearing outer steel sleeve; the eccentric assembly is arranged on the inner side of the needle bearing; the baffle is arranged on one side of the eccentric assembly. The bearing unit structure is arranged, the eccentric sleeve and the needle bearing outer steel sleeve are clamped through matching of the groove and the lug-free clamping spring, so that the eccentric sleeve and the needle bearing outer steel sleeve are positioned, and then the eccentric steel sleeve and the needle bearing on the eccentric part are blocked through matching of the baffle and the step on one side of the eccentric part. After the needle bearing is used for transmission, the seizure phenomenon can be avoided when a machine is driven to a high speed.

Description

Technical Field

[0001] This utility model relates to the field of bearing unit technology, and in particular to a rotary eccentric bearing unit. Background Technology

[0002] Bearings are commonly seen in mechanical equipment. They are an important component in modern mechanical equipment, and their main function is to support rotating mechanical parts, reduce the coefficient of friction during their movement, and ensure their rotational accuracy.

[0003] Among various types of bearings, eccentric bearings are quite common. An eccentric bearing is a bearing in which the center of the inner ring and the center of the outer ring are not on the same circle, making it a very useful type of bearing. It mainly consists of an outer ring, an inner ring, a rolling element turnbuckle, and rolling elements. Eccentric bearings have a simple structure and are easy to use. They can achieve eccentric function without an eccentric shaft, reducing the manufacturing cost of eccentric mechanisms.

[0004] As per the instruction manual Figure 1 As shown, the existing rotary eccentric bearing unit drives the eccentric body 9 via the main shaft, and then the eccentric body 9 drives the eccentric sleeve body 8, which in turn drives the connecting rod component above. The eccentric body 9 and the eccentric sleeve body 8 are in contact through a bearing bush 10 made of Babbitt alloy, generating rotational friction. When the machine is running at low speed, the bearing bush 10 and the eccentric sleeve body 8 operate normally after being immersed in machine oil. As the machine speed increases, the fit between the bearing bush 10 and the eccentric sleeve body 8 often becomes jammed due to the increased temperature after machine acceleration. Therefore, we propose a rotary eccentric bearing unit. Utility Model Content

[0005] The purpose of this utility model is to provide a rotary eccentric bearing unit. By setting the bearing unit structure, the eccentric sleeve and the outer steel sleeve of the needle roller bearing are locked in place by the groove and the earless snap ring. Then, the baffle and the step on the eccentric side are used to block the eccentric steel sleeve and the needle roller bearing on the eccentric. After the needle roller bearing is used for transmission, the bearing unit structure can be prevented from seizing with the eccentric sleeve due to the heat generated after the machine speed increases.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rotary eccentric bearing unit, including an eccentric sleeve, on which a bearing unit structure is provided, the bearing unit structure including:

[0007] Earless retaining spring, wherein the earless retaining spring is disposed on the inner side of the eccentric sleeve;

[0008] The outer steel sleeve of the needle roller bearing is disposed on the side without the ear retainer;

[0009] A needle roller bearing, wherein the needle roller bearing is disposed inside the outer steel sleeve of the needle roller bearing;

[0010] An eccentric assembly is disposed on the inner side of the needle roller bearing;

[0011] A baffle is disposed on one side of the eccentric assembly.

[0012] Preferably, the outer surface of the outer steel sleeve of the needle roller bearing and the inner wall of the eccentric sleeve are both provided with grooves, which cooperate with the earless retaining spring to hold the eccentric sleeve and the outer steel sleeve of the needle roller bearing.

[0013] Preferably, the eccentric assembly includes an eccentric steel sleeve located inside the needle roller bearing and an eccentric located inside the eccentric steel sleeve.

[0014] Preferably, the baffle and the step on the eccentric side cooperate to block the eccentric steel sleeve and needle roller bearing on the eccentric side.

[0015] Preferably, the eccentric steel sleeve is fitted onto the eccentric bearing, and the eccentric steel sleeve is in contact with the needle roller bearing.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] By creating grooves on the inner side of the eccentric sleeve and the outer side of the needle roller bearing outer steel sleeve, the grooves, in conjunction with the earless snap ring, lock the eccentric sleeve and the needle roller bearing outer steel sleeve in place. Furthermore, a baffle and a step on one side of the eccentric sleeve are used to further secure the eccentric sleeve and needle roller bearing. This prevents the bearing unit structure from seizing with the eccentric sleeve due to increased temperature caused by machine acceleration when using needle roller bearings for transmission. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a bearing unit in the prior art.

[0019] Figure 2 This is a side view of the internal structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the planar structure of this utility model.

[0021] In the diagram: 1. Eccentric sleeve; 2. Earless snap ring; 3. Outer steel sleeve of needle roller bearing; 4. Needle roller bearing; 5. Baffle; 6. Eccentric steel sleeve; 7. Eccentric; 8. Eccentric sleeve body; 9. Eccentric body; 10. Bearing shell. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides, for example Figure 2-3 The rotary eccentric bearing unit shown includes an eccentric sleeve 1, on which a bearing unit structure is provided. The bearing unit structure includes: a loop 2, which is located inside the eccentric sleeve 1; a needle roller bearing outer steel sleeve 3, which is located on one side of the loop 2; a needle roller bearing 4, which is located inside the needle roller bearing outer steel sleeve 3; an eccentric assembly, which is located inside the needle roller bearing 4; and a baffle 5, which is located on one side of the eccentric assembly. Grooves are provided on the outer surface of the needle roller bearing outer steel sleeve 3 and the inner wall of the eccentric sleeve 1. The grooves cooperate with the loop 2 to lock the eccentric sleeve 1 and the needle roller bearing outer steel sleeve 3. The eccentric assembly includes an eccentric steel sleeve located inside the needle roller bearing 4. 6 and eccentric 7 located inside eccentric steel sleeve 6; baffle 5 and step on one side of eccentric 7 are used to block eccentric steel sleeve 6 and needle roller bearing 4 on eccentric 7; by opening grooves on the inner side of eccentric sleeve 1 and outer side of needle roller bearing outer steel sleeve 3, the grooves are used to cooperate with earless snap ring 2 to lock eccentric sleeve 1 and needle roller bearing outer steel sleeve 3, so that eccentric sleeve 1 and needle roller bearing outer steel sleeve 3 are positioned. Then, by using baffle 5 and step on one side of eccentric 7 to block eccentric steel sleeve 6 and needle roller bearing 4 on eccentric 7, it is possible to avoid the bearing unit structure from seizing with eccentric sleeve 1 due to the temperature rise after the machine accelerates as the machine speed increases after using needle roller bearing 4 for transmission.

[0024] Furthermore, the eccentric steel sleeve 6 is fitted onto the eccentric 7, and the eccentric steel sleeve 6 contacts the needle roller bearing 4, and the baffle 5 can be used for heat treatment.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotary eccentric bearing unit, comprising an eccentric sleeve (1), characterized in that, The eccentric sleeve (1) is provided with a bearing unit structure, the bearing unit structure comprising: Earless retaining ring (2), the earless retaining ring (2) is disposed on the inner side of the eccentric sleeve (1); The outer steel sleeve (3) of the needle roller bearing is disposed on one side of the earless retaining spring (2); Needle roller bearing (4), wherein the needle roller bearing (4) is disposed on the inner side of the outer steel sleeve (3) of the needle roller bearing; An eccentric assembly is disposed inside the needle roller bearing (4); Baffle (5), which is disposed on one side of the eccentric assembly.

2. The rotary eccentric bearing unit according to claim 1, characterized in that, The outer surface of the outer steel sleeve (3) of the needle roller bearing and the inner wall of the eccentric sleeve (1) are both provided with grooves. The grooves cooperate with the earless snap ring (2) to lock the eccentric sleeve (1) and the outer steel sleeve (3) of the needle roller bearing.

3. The rotary eccentric bearing unit according to claim 1, characterized in that, The eccentric assembly includes an eccentric steel sleeve (6) located inside the needle roller bearing (4) and an eccentric (7) located inside the eccentric steel sleeve (6).

4. The rotary eccentric bearing unit according to claim 3, characterized in that, The steps on one side of the baffle (5) and the eccentric (7) are used to block the eccentric steel sleeve (6) and the needle roller bearing (4) on the eccentric (7).

5. The rotary eccentric bearing unit according to claim 3, characterized in that, The eccentric steel sleeve (6) is fitted on the eccentric (7), and the eccentric steel sleeve (6) is in contact with the needle roller bearing (4).

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