Multi-structure sealing photo-thermal rotary speed reducer

Abstract

The utility model relates to a multi-structure sealing photo-thermal rotary speed reducer which comprises a stand column installation base, a base is arranged on the stand column installation base, the base comprises a base worm wheel cavity and a base worm cavity, a worm wheel is arranged in the base worm wheel cavity, a worm is arranged in the base worm cavity, the worm wheel is matched with the worm, and the stand column installation base and the base worm cavity are matched with each other. A steel wire raceway bearing is arranged between the worm gear and the base worm gear cavity, a labyrinth sealing structure is arranged below the steel wire raceway bearing, an end face sealing structure is arranged below the labyrinth sealing structure, a radial sealing structure is arranged below the end face sealing structure, and an axial sealing structure is arranged between the worm gear and the stand column installation base. According to the multi-structure sealing photo-thermal rotary speed reducer, multiple sealing structures are adopted, grease can be effectively prevented from seeping out, and the sealing performance of the rotary speed reducer is greatly improved.

Description

Technical Field

[0001] This utility model discloses a multi-structure sealed solar thermal rotary reducer, which is mainly used for rotary applications of solar thermal energy and belongs to the field of rotary reducer technology. Background Technology

[0002] Currently, most rotary reducers for solar thermal and solar energy systems are precision rotary reducers. To facilitate adjustment of clearance and structural rigidity, the worm gear main support bearing often uses a wire raceway bearing (composed of an outer raceway (consisting of two inner raceway steel wires), an inner raceway (consisting of two outer raceway steel wires), an open cage, and multiple steel balls). This type of assembled bearing cannot be designed with an integrated oil-proof seal. Grease above the wire raceway bearing can enter the lower part of the bearing through the gap between the bearing steel balls, and then enter the oil seal lip below. When the oil seal rotates, the grease above can easily be carried out or seep out from the rotating lip, causing oil leakage. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a multi-structure sealed photothermal rotary reducer that is in contrast to the above-mentioned prior art. It adopts a multi-seal structure, which can effectively prevent grease leakage and greatly improve the sealing performance of the rotary reducer.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: a multi-structure sealed photothermal rotary reducer, which includes a column mounting base, a base on the column mounting base, the base including a base worm gear cavity and a base worm cavity, a worm wheel in the base worm gear cavity, a worm in the base worm cavity, the worm wheel and the worm cooperating, a wire raceway bearing between the worm wheel and the base worm gear cavity, a labyrinth seal structure below the wire raceway bearing, an end face seal structure below the labyrinth seal structure, a radial seal structure below the end face seal structure, and an axial seal structure between the worm wheel and the column mounting base.

[0005] Optionally, the wire raceway bearing includes upper and lower inner raceway wires and upper and lower outer raceway wires, with an inner raceway formed between the upper and lower inner raceway wires and an outer raceway formed between the upper and lower outer raceway wires. An open retainer is provided between the inner raceway and the outer raceway, and a plurality of steel balls are provided on the open retainer.

[0006] Optionally, the upper and lower inner raceway wires are set on the outer peripheral wall of the worm gear, and the upper and lower outer raceway wires are set on the inner peripheral wall of the worm gear cavity of the base.

[0007] Optionally, the labyrinth sealing structure includes a labyrinth annular protrusion, which is disposed on the column mounting base, and forms a labyrinth sealing cavity between the labyrinth annular protrusion and the inner peripheral wall of the base worm gear cavity.

[0008] Optionally, the end face sealing structure includes a column mounting seat sealing groove, the column mounting seat sealing groove being formed on the column mounting seat, and a wedge-shaped sealing ring with support being provided in the column mounting seat sealing groove.

[0009] Optionally, the supported wedge-shaped sealing ring includes a sealing ring base, a wedge-shaped sealing lip is provided on the outer side of the sealing ring base, an upper sealing surface and a lower sealing surface are formed on the upper and lower sides of the sealing ring base, and a wedge-shaped sealing ring support surface is formed at the connection position between the lower sealing surface and the wedge-shaped sealing lip.

[0010] Optionally, the radial sealing structure includes a radial sealing groove, and a second oil seal is disposed within the radial sealing groove.

[0011] Optionally, the radial sealing groove is formed between the inner peripheral wall of the base worm gear cavity and the outer peripheral wall of the column mounting base.

[0012] Optionally, the axial sealing structure includes a worm gear sealing groove, which is formed on the lower end face of the worm gear, and an O-ring is provided in the worm gear sealing groove.

[0013] Optionally, the worm gear and the worm gear cavity of the base are sealed by a first oil seal.

[0014] Compared with the prior art, the advantages of this utility model are:

[0015] This utility model discloses a multi-structure sealed photothermal rotary reducer, which adopts a multi-seal structure to effectively prevent grease leakage and greatly improve the sealing performance of the rotary reducer. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a multi-structure sealed photothermal rotary reducer according to the present invention.

[0017] Figure 2 for Figure 1 A partial lateral sectional view.

[0018] Figure 3 for Figure 1 A longitudinal partial sectional view.

[0019] Figure 4 for Figure 3 Enlarged view of part A.

[0020] Figure 5 for Figure 4 A schematic diagram of a wedge-shaped sealing ring with support in the middle.

[0021] in:

[0022] Column mounting base 1

[0023] Base 2

[0024] Base worm gear cavity 21

[0025] Base worm gear cavity 22

[0026] Worm Gear 3

[0027] worm gear 4

[0028] 5 steel wire raceway bearings

[0029] Inner raceway steel wire 51

[0030] Outer raceway steel wire 52

[0031] Inner raceway 53

[0032] Outer raceway 54

[0033] Open Retainer 55

[0034] Steel Ball 56

[0035] Maze Sealing Structure 6

[0036] Maze-shaped protrusion 61

[0037] Maze-sealed inner cavity 62

[0038] End face sealing structure 7

[0039] Column mounting base sealing groove 71

[0040] 72 with support wedge seal

[0041] Sealing ring base 721

[0042] Wedge-shaped sealing lip 722

[0043] Upper sealing surface 723

[0044] Lower sealing surface 724

[0045] 725 wedge seal support surface

[0046] Radial sealing structure 8

[0047] Radial sealing groove 81

[0048] Second oil seal 82

[0049] Axial sealing structure 9

[0050] Worm gear seal groove 91

[0051] O-ring 92

[0052] worm bearing 10

[0053] First oil seal 11. Detailed Implementation

[0054] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0055] like Figures 1-5 As shown in this embodiment, a multi-structure sealed photothermal rotary reducer includes a column mounting base 1, a base 2 on the column mounting base 1, the base 2 including a base worm gear cavity 21 and a base worm cavity 22, a worm wheel 3 is disposed in the base worm gear cavity 21, and a worm 4 is disposed in the base worm cavity 22, the worm wheel 3 and the worm 4 cooperate with each other, a wire raceway bearing 5 is disposed between the worm wheel 3 and the base worm gear cavity 21, a labyrinth seal structure 6 is disposed below the wire raceway bearing 5, an end face seal structure 7 is disposed below the labyrinth seal structure 6, a radial seal structure 8 is disposed below the end face seal structure 7, and an axial seal structure 9 is disposed between the worm wheel 3 and the column mounting base 1;

[0056] The steel wire raceway bearing 5 includes two inner raceway steel wires 51 and two outer raceway steel wires 52. An inner raceway 53 is formed between the two inner raceway steel wires 51, and an outer raceway 54 is formed between the two outer raceway steel wires 52. An open retainer 55 is provided between the inner raceway 53 and the outer raceway 54, and a plurality of steel balls 56 are provided on the open retainer 55.

[0057] The upper and lower inner raceway steel wires 51 are set on the outer peripheral wall of the worm gear 3, and the upper and lower outer raceway steel wires 52 are set on the inner peripheral wall of the base worm gear cavity 21;

[0058] The labyrinth sealing structure 6 includes a labyrinth annular protrusion 61, which is disposed on the column mounting base 1, and forms a labyrinth sealing inner cavity 62 between the labyrinth annular protrusion 61 and the inner peripheral wall of the base worm gear cavity 21.

[0059] The end face sealing structure 7 includes a column mounting seat sealing groove 71, which is formed on the column mounting seat 1, and a supporting wedge-shaped sealing ring 72 is provided in the column mounting seat sealing groove 71.

[0060] The supported wedge-shaped sealing ring 72 includes a sealing ring base 721, a wedge-shaped sealing lip 722 on the outer side of the sealing ring base 721, an upper sealing surface 723 and a lower sealing surface 724 formed on the upper and lower sides of the sealing ring base 721, and a wedge-shaped sealing ring support surface 725 formed at the connection position between the lower sealing surface 724 and the wedge-shaped sealing lip 722; the upper and lower sealing surfaces of the supported wedge-shaped sealing ring seal with the sealing groove of the column mounting seat, and the wedge-shaped sealing ring support surface seals with the auxiliary sealing support surface of the column mounting seat. At the same time, the auxiliary sealing support surface of the column mounting seat supports the wedge-shaped sealing ring support surface, increasing the bending resistance of the wedge-shaped sealing ring; at the same time, the supported wedge-shaped sealing ring is concave in shape, which can store a certain amount of grease.

[0061] The radial sealing structure 8 includes a radial sealing groove 81, and a second oil seal 82 is provided in the radial sealing groove 81.

[0062] The radial sealing groove 81 is formed between the inner peripheral wall of the base worm gear cavity 21 and the outer peripheral wall of the column mounting seat 1; the outer ring of the second oil seal is sealed with the base, and the sealing lip of the second oil seal is sealed with the radial sealing surface of the column mounting seat.

[0063] The axial sealing structure 9 includes a worm gear sealing groove 91, which is formed on the lower end face of the worm gear 3, and an O-ring 92 is provided in the worm gear sealing groove 91.

[0064] The worm 4 is mounted in the worm cavity 22 of the base via two worm bearings 10 on the left and right sides;

[0065] The worm 4 and the worm cavity 22 of the base are sealed by the first oil seal 11.

[0066] Working principle:

[0067] The wire raceway bearing is located between the worm gear and the base. Grease fills the area above the wire raceway bearing. A labyrinth seal structure is designed below the wire raceway bearing, followed by an end-face seal structure, and then a radial seal structure. An axial seal structure is designed between the lower end face of the worm gear and the upper plane of the column mounting base. These seal structures together form the overall sealing structure of the rotary reducer. Grease above the wire raceway bearing enters below through the gaps between the steel balls. After passing through the labyrinth seal structure, a small amount of grease falls onto the support wedge-shaped seal ring of the end-face seal structure. As the base and column mounting base rotate relative to each other, a very small amount of grease falls into the inner cavity of the second oil seal. The lip of the second oil seal does not contact the grease, thus achieving the sealing function.

[0068] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A multi-structure sealed photothermal rotary reducer, characterized in that: It includes a column mounting base (1), on which a base (2) is provided. The base (2) includes a base worm gear cavity (21) and a base worm cavity (22). A worm wheel (3) is provided in the base worm gear cavity (21), and a worm (4) is provided in the base worm cavity (22). The worm wheel (3) and the worm (4) cooperate with each other. A wire raceway bearing (5) is provided between the worm wheel (3) and the base worm gear cavity (21). A labyrinth seal structure (6) is provided below the wire raceway bearing (5). An end face seal structure (7) is provided below the labyrinth seal structure (6). A radial seal structure (8) is provided below the end face seal structure (7). An axial seal structure (9) is provided between the worm wheel (3) and the column mounting base (1).

2. The multi-structure sealed photothermal rotary reducer according to claim 1, characterized in that: The wire raceway bearing (5) includes two inner raceway wires (51) and two outer raceway wires (52). An inner raceway (53) is formed between the two inner raceway wires (51), and an outer raceway (54) is formed between the two outer raceway wires (52). An open retainer (55) is provided between the inner raceway (53) and the outer raceway (54), and a plurality of steel balls (56) are provided on the open retainer (55).

3. The multi-structure sealed photothermal rotary reducer according to claim 2, characterized in that: The upper and lower inner raceway wires (51) are set on the outer peripheral wall of the worm gear (3), and the upper and lower outer raceway wires (52) are set on the inner peripheral wall of the worm gear cavity (21) of the base.

4. The multi-structure sealed photothermal rotary reducer according to claim 1, characterized in that: The labyrinth sealing structure (6) includes a labyrinth annular protrusion (61), which is disposed on the column mounting base (1). The labyrinth annular protrusion (61) and the inner peripheral wall of the base worm gear cavity (21) form a labyrinth sealing cavity (62).

5. The multi-structure sealed photothermal rotary reducer according to claim 1, characterized in that: The end face sealing structure (7) includes a column mounting seat sealing groove (71), which is opened on the column mounting seat (1), and a supporting wedge-shaped sealing ring (72) is provided in the column mounting seat sealing groove (71).

6. The multi-structure sealed photothermal rotary reducer according to claim 5, characterized in that: The supported wedge-shaped sealing ring (72) includes a sealing ring base (721), a wedge-shaped sealing lip (722) is provided on the outer side of the sealing ring base (721), an upper sealing surface (723) and a lower sealing surface (724) are formed on the upper and lower sides of the sealing ring base (721), and a wedge-shaped sealing ring support surface (725) is formed at the connection position between the lower sealing surface (724) and the wedge-shaped sealing lip (722).

7. The multi-structure sealed photothermal rotary reducer according to claim 1, characterized in that: The radial sealing structure (8) includes a radial sealing groove (81), and a second oil seal (82) is provided in the radial sealing groove (81).

8. A multi-structure sealed photothermal rotary reducer according to claim 7, characterized in that: The radial sealing groove (81) is formed between the inner peripheral wall of the base worm gear cavity (21) and the outer peripheral wall of the column mounting base (1).

9. A multi-structure sealed photothermal rotary reducer according to claim 1, characterized in that: The axial sealing structure (9) includes a worm gear sealing groove (91), which is located on the lower end face of the worm gear (3), and an O-ring (92) is provided in the worm gear sealing groove (91).

10. A multi-structure sealed photothermal rotary reducer according to claim 1, characterized in that: The worm (4) and the base worm cavity (22) are sealed by a first oil seal (11).

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