Planetary reducer with bearing anti-loosening adjusting nut

Abstract

The utility model relates to the technical field of planetary speed reducers, and discloses a planetary speed reducer with a bearing anti-loosening adjusting nut, which comprises a planet carrier, a bearing and a shell, the adjusting nut comprises a first connecting part and a second connecting part which are fixedly connected, and the outer side surface of the first connecting part is provided with a connecting thread; the second connecting part is arranged on the outer side face of one end of the first connecting part, the outer end of the second connecting part is larger than that of the first connecting part, and a first through hole is formed in the second connecting part; the planet carrier is provided with a connecting hole, threads matched with the connecting threads are arranged on the inner wall of the connecting hole, a locking piece is arranged in the first penetrating hole, the adjusting nut and the planet carrier are fixed together through the locking piece, the planet carrier is coaxially and slidably sleeved with the bearing, and the two side faces of the bearing abut against the second connecting part and the shell respectively. According to the utility model, the bearing clearance can be conveniently and accurately adjusted, and the adjusting nut can be fixed at any position after adjustment.

Description

Technical Field

[0001] This utility model relates to the field of planetary reducer technology, and in particular to a planetary reducer with a bearing anti-loosening adjusting nut. Background Technology

[0002] Planetary gearboxes are widely used in mechanical transmission. Disc-type gearboxes, in particular, use tapered roller bearings for support. The bearing clearance requires precise adjustment. Currently, the method for adjusting the bearing clearance involves adding adjusting components (such as shims or pressure plates) within the clearance after initial control, and then securing the bearing and adjusting components with screws. This method is not convenient or precise for controlling the bearing clearance; adjustment is time-consuming and labor-intensive. It requires the use of adjusting components to ensure a suitable clearance distance. If the clearance is too small, the bearing will be crushed and unable to rotate once the screws are fully locked. If the clearance is too large, the bearing will loosen once the screws are fully locked.

[0003] In order to make it easier to adjust the bearing clearance, a method is needed to adjust the bearing clearance. Utility Model Content

[0004] The purpose of this invention is to provide a planetary reducer with a bearing anti-loosening adjusting nut, which allows for convenient and precise adjustment of bearing clearance.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A planetary reducer with a bearing anti-loosening adjusting nut includes a planetary carrier, a bearing, and a housing. The adjusting nut comprises a first connecting part and a second connecting part fixedly connected. The outer side of the first connecting part is provided with a connecting thread. The second connecting part is located on the outer side of one end of the first connecting part, and the outer end of the second connecting part is larger than the outer end of the first connecting part. A first through hole is provided on the second connecting part. The planetary carrier is provided with a connecting hole, the inner wall of which is provided with a thread matching the connecting thread. A locking element is provided in the first through hole, and the locking element fixes the adjusting nut and the planetary carrier together. The bearing is coaxially and slidably sleeved on the planetary carrier, and its two sides abut against the second connecting part and the housing, respectively.

[0007] As a further feature of this invention, the first connecting part is a cylindrical structure, and the second connecting part is a disc-shaped structure.

[0008] As a further feature of this utility model, the first connecting part and the second connecting part are integrally formed and coaxially arranged, and a through hole is coaxially provided at the center of the first connecting part and the second connecting part.

[0009] As a further feature of this invention, the first perforation is provided in multiple circumferential directions along the center of the second connecting portion.

[0010] As a further feature of this invention, the axis of the first perforation is parallel to the axis of the first connecting portion.

[0011] As a further feature of this invention, the locking element includes a set screw, and the first through hole has a thread that matches the set screw.

[0012] As a further feature of this invention, the set screw includes a tapered set screw.

[0013] As a further feature of this invention, the set screw and the first through hole are provided in 2-4 groups, and the multiple groups of set screws and the first through hole are evenly distributed along the center of the planetary carrier.

[0014] The beneficial effects of this utility model are:

[0015] In this invention, a newly designed adjusting nut is used to adjust the bearing clearance. The bearing is mounted on the planetary carrier, and the adjusting nut is threadedly connected to the planetary carrier via a first connecting part. At this time, the second connecting part and the housing can limit the bearing in the middle. The first connecting part can adjust the forward position of the entire nut by adjusting the thread with the planetary carrier, which will push the bearing to move on the planetary carrier, thereby adjusting the bearing clearance. After adjustment, the nut is locked to the planetary carrier using a tapered set screw to complete the adjustment. Since there is no threaded hole between the set screw and the planetary carrier, it is only necessary to tighten the set screw to abut against the planetary carrier. Therefore, the adjusting nut can be adjusted at any angle, and the set screw can fix the adjusting nut, thereby completing the adjustment at any angle. When adjustment is needed, the screw is removed, the adjusting nut is rotated to the appropriate position, and then the screw is fixed again, which is very convenient. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a cross-sectional structural diagram of the planetary reducer in this embodiment;

[0018] Figure 2 This is a schematic diagram of the connection structure between the adjusting nut and the planetary carrier in this embodiment.

[0019] In the figure, 11 is the first connecting part, 12 is the second connecting part, 13 is the first through hole, 14 is the through hole, 15 is the locking element, 2 is the planetary carrier, 3 is the bearing, and 4 is the housing. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] A planetary gear reducer with a bearing anti-loosening adjusting nut, reference Figure 1 and Figure 2 It includes planetary carrier 2, bearing 3 and adjusting nut;

[0022] The adjusting nut includes a first connecting part 11 and a second connecting part 12. The outer side of the first connecting part 11 is provided with a connecting thread, and the second connecting part 12 is located on the outer side of the first connecting part and extends radially outward. The second connecting part 12 is provided with a first through hole 13.

[0023] In this embodiment, the first connecting part 11 is a cylindrical structure and the second connecting part 12 is a disc-shaped structure. The first connecting part 11 and the second connecting part 12 are integrally formed and coaxially arranged. The first connecting part 11 and the second connecting part 12 are coaxially provided with through holes 14. Multiple first through holes 13 are provided along the circumferential direction of the center of the second connecting part 12. The axis of the first through holes 13 is parallel to the axis of the first connecting part 11.

[0024] Specifically, the adjusting nut is an integrally formed mechanism of a columnar body and a flange structure. The outer side of the first connecting part 11 is provided with a connecting thread for threaded connection with the planetary carrier 2. The second connecting part 12 extends outward, so that the outer end of the second connecting part is larger than the outer end of the first connecting part. This allows for the provision of a first through hole 13 for connection with the planetary carrier 2, and also serves to form a limiting part, which together with the housing 4 forms a limiting space to limit the bearing 3 within it.

[0025] In the planetary reducer, the planet carrier 2 is provided with a connecting hole, and the inner wall of the connecting hole is provided with a thread that matches the connecting thread. A locking member 15 is provided in the first through hole 13. The locking member 15 fixes the adjusting nut and the planet carrier 2 together. The bearing 3 is slidably sleeved on the planet carrier 2. The two sides of the bearing 3 can abut against the second connecting part 12 and the housing 4 respectively.

[0026] Furthermore, the locking member 15 includes a set screw, and the first through hole 13 and the second through hole are provided with threads that match the set screw.

[0027] Specifically, after adjusting the adjusting nut, install and tighten the set screw to connect the adjusting nut and planetary carrier 2 as a whole. At this time, the adjusting nut has a screw hole (first through hole 13). Since the rotation angle of the nut is unknown, no screw hole is made on the planetary carrier. Because the position of the hole is unknown, the set screw is directly fixed to the planetary carrier 2 through the first through hole 13. The adjusting nut and planetary carrier 2 are fixed by the pressure between the set screw and the planetary carrier 2. The set screw can fix the adjusting nut in any position, which is very convenient.

[0028] In another embodiment, the set screw includes a tapered set screw. In order to achieve a better locking effect, 2-4 sets of set screws and first through holes 13 are provided, and multiple sets of set screws and first through holes 13 are evenly distributed along the center of the planetary carrier 2.

[0029] In this embodiment, the adjusting nut in the entire planetary reducer is adjusted on the following principle:

[0030] The bearing 3 is mounted on the planetary carrier 2. The adjusting nut is threadedly connected to the planetary carrier 2 through the first connecting part 11. At this time, the second connecting part 12 and the housing 4 can limit the bearing 3 in the middle. The first connecting part 11 can adjust the forward position of the entire nut by adjusting the thread with the planetary carrier 2, and at the same time push the bearing 3 to move on the planetary carrier 2, thereby adjusting the clearance of the bearing 3. After adjustment, the nut is locked to the planetary carrier 2 using the tapered set screw to complete the adjustment. Since there is no threaded hole between the set screw and the planetary carrier 2, it is only necessary to tighten the set screw to abut against the planetary carrier 2. Therefore, the adjusting nut can be adjusted at any angle, and the set screw can fix the adjusting nut to complete the adjustment of any angle. When the clearance needs to be adjusted, the screw is removed, the adjusting nut is rotated to the appropriate position, and then the screw is fixed again, which is very convenient.

[0031] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 planetary reducer with a bearing anti-loosening adjusting nut, characterized in that: The system includes a planetary carrier (2), a bearing (3), a housing (4), and an adjusting nut. The adjusting nut includes a first connecting part (11) and a second connecting part (12) that are fixedly connected. The outer side of the first connecting part (11) is provided with a connecting thread for connecting to the planetary carrier. The second connecting part (12) is provided on the outer side of one end of the first connecting part (11). The second connecting part (12) extends outward along the outer end of the first connecting part (11) to form a stepped structure with the first connecting part (11). The second connecting part (12) is provided with a first through hole (13). The planetary carrier (2) is provided with a connecting hole. The inner wall of the connecting hole is provided with a thread that matches the connecting thread. A locking member (15) is provided in the first through hole (13). The locking member (15) fixes the adjusting nut and the planetary carrier (2) together. The bearing (3) is coaxially slidably sleeved on the planetary carrier (2). The two sides of the bearing (3) abut against the second connecting part (12) and the housing (4), respectively.

2. A planetary reducer with a bearing anti-loosening adjusting nut according to claim 1, characterized in that: The first connecting part (11) is a cylindrical structure, and the second connecting part (12) is a disc-shaped structure.

3. A planetary reducer with a bearing anti-loosening adjusting nut according to claim 2, characterized in that: The first connecting part (11) and the second connecting part (12) are integrally formed and coaxially arranged. The first connecting part (11) and the second connecting part (12) are coaxially provided with a through hole (14) at their center.

4. A planetary reducer with a bearing anti-loosening adjusting nut according to claim 1, characterized in that: The first perforation (13) has multiple perforations along the center circumferential direction of the second connecting part (12).

5. A planetary reducer with a bearing anti-loosening adjusting nut according to claim 4, characterized in that: The axis of the first perforation (13) is parallel to the axis of the first connecting part (11).

6. A planetary reducer with a bearing anti-loosening adjusting nut according to claim 1, characterized in that: The locking element (15) includes a set screw, and the first through hole (13) is provided with threads that match the set screw.

7. A planetary reducer with a bearing anti-loosening adjusting nut according to claim 6, characterized in that: The set screw includes a tapered set screw.

8. A planetary reducer with a bearing anti-loosening adjusting nut according to claim 7, characterized in that: The set screws and first through holes (13) are provided in 2-4 sets, and multiple sets of set screws and first through holes (13) are evenly distributed along the center of the planetary carrier (2).

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