Highly waterproof rotary speed reducer

Abstract

The utility model relates to a highly waterproof rotary speed reducer which comprises a base (1), the base (1) comprises a seat ring (1.1) and a shaft casing (1.2), a rotary support (2) is arranged in the seat ring (1.1), a worm (3) is arranged in the shaft casing (1.2), the rotary support (2) is matched with the worm (3), a first sealing ring (4) is arranged on the outer side of the rotary support (2), and the first sealing ring (4) is a bowl-shaped sealing ring. According to the highly waterproof rotary speed reducer, the exposed seal between the inner ring and the outer ring of the rotary bearing adopts the bowl-shaped sealing ring, so that the sealing performance is greatly improved, and the risks of water leakage and oil leakage of the rotary speed reducer are effectively reduced.

Description

Technical Field

[0001] The utility model discloses a highly waterproof rotary reducer, which is mainly used for rotary applications of engineering machinery and solar energy. Background Art

[0002] The rotary reducer is a full-circle rotary reduction transmission mechanism that integrates a driving power source. It uses a slewing bearing as a transmission follower and a mechanism attachment. The active part, the driving source and the cover are attached to one of the inner and outer circles of the slewing bearing, and the other circle is used as both a transmission follower and a connection base for the driven working parts. In this way, the slewing bearing itself is a full-circle rotary connection part, and the driving power source and the main transmission parts are efficiently configured, making it a universal reduction transmission mechanism that integrates rotation, reduction and driving functions while having a simple structure and is easy to manufacture and maintain.

[0003] In existing slewing reducers, the seals between the inner and outer rings of the slewing bearings are mostly end-face seals. The sealing strips are subject to the risk of water and oil leakage under the action of internal pressure, and the sealing effect is poor. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a highly waterproof rotary reducer in view of the above-mentioned prior art, wherein the exposed seal between the inner and outer rings of the rotary bearing adopts a bowl-shaped sealing ring, which greatly improves the sealing performance and effectively reduces the risk of water and oil leakage of the rotary reducer.

[0005] The technical solution adopted by the utility model to solve the above-mentioned problem is: a highly waterproof rotary reducer, which includes a base, the base includes a seat ring and a shaft shell, a rotary bearing is arranged in the seat ring, a worm is arranged in the shaft shell, the rotary bearing cooperates with the worm, and a first sealing ring is arranged on the outside of the rotary bearing, and the first sealing ring is a bowl-shaped sealing ring.

[0006] Optionally, the slewing bearing includes an inner ring and an outer ring, and the first sealing ring is arranged between the inner ring and the outer ring.

[0007] Optionally, rolling bodies are arranged between the inner ring and the outer ring.

[0008] Optionally, the first sealing ring includes a sealing ring body, a groove is formed on the inner side of the sealing ring body, an inner boss and an outer boss are formed on the inner and outer sides of the groove respectively, an outer sealing lip is provided on the outer side of the sealing ring body, and an upper edge sealing lip is provided on the upper side of the outer sealing lip.

[0009] Optionally, a concave reverse flow surface is provided on the outer side of the sealing ring body.

[0010] Optionally, an inner ring sealing groove is provided on the outer peripheral wall of the inner ring, and an inner ring boss is provided on the outer side of the inner ring sealing groove.

[0011] Optionally, the inner boss cooperates with the inner ring sealing groove, the inner ring boss cooperates with the groove, and the outer boss is located outside the inner ring boss.

[0012] Optionally, an outer ring sealing groove is provided on the inner circumferential wall of the outer ring, an outer ring boss is provided outside the outer ring sealing groove, the outer sealing lip cooperates with the outer ring sealing groove, and the upper edge sealing lip cooperates with the outer ring boss.

[0013] Optionally, a second sealing ring is provided on the inner side of the slewing bearing, and the second sealing ring is provided between the inner ring and the outer ring; a third sealing ring is provided between the inner ring and the seat ring; and a first oil seal is provided between the outer ring and the base.

[0014] Optionally, end covers and motor mounting seats are respectively provided on the front and rear sides of the shaft housing, a fourth sealing ring is provided between the end cover and the shaft housing, a fifth sealing ring is provided between the motor mounting seat and the shaft housing, a second oil seal is provided between the worm and the shaft housing; and a third oil seal is provided between the worm and the motor mounting seat.

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

[0016] The exposed seal between the inner and outer rings of the slewing bearing of the utility model adopts a bowl-shaped sealing ring, which greatly improves the sealing performance and effectively reduces the risk of water leakage and oil leakage of the slewing reducer;

[0017] The sealing member exposed between the inner and outer rings of the slewing bearing of the utility model is in a bowl shape, and the external rainwater will automatically flow away when flowing to the concave guide surface, thereby improving the waterproof performance of the slewing reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a structural schematic diagram of a highly waterproof rotary reducer.

[0019] Figure 2 for Figure 1 AA section view.

[0020] Figure 3 for Figure 2 Enlarged view of part B.

[0021] Figure 4 for Figure 3 Schematic diagram of the structure of the seal.

[0022] in:

[0023] Base 1

[0024] Seat 1.1

[0025] Axle housing 1.2

[0026] Slewing bearing 2

[0027] Inner ring 2.1

[0028] Outer ring 2.2

[0029] Rolling element 2.3

[0030] Inner ring sealing groove 2.4

[0031] Inner ring boss 2.5

[0032] Outer ring sealing groove 2.6

[0033] Outer ring boss 2.7

[0034] Worm 3

[0035] First sealing ring 4

[0036] Sealing ring body 4.1

[0037] Groove 4.2

[0038] Inner boss 4.3

[0039] External boss 4.4

[0040] Outer sealing lip 4.5

[0041] Upper sealing lip 4.6

[0042] Concave backflow surface 4.7

[0043] Second sealing ring 5

[0044] The third sealing ring 6

[0045] First oil seal 7

[0046] End cap 8

[0047] Motor mount 9

[0048] Fourth sealing ring 10

[0049] Fifth sealing ring 11

[0050] Worm bearing 12

[0051] Second oil seal 13

[0052] The third oil seal 14 . DETAILED DESCRIPTION

[0053] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0054] like Figure 1~Figure 4 As shown, a highly waterproof rotary reducer in this embodiment comprises a base 1, the base 1 comprises a seat ring 1.1 and a shaft housing 1.2, a rotary bearing 2 is arranged in the seat ring 1.1, a worm 3 is arranged in the shaft housing 1.2, the rotary bearing 2 cooperates with the worm 3, a first sealing ring 4 is arranged on the outer side of the rotary bearing 2, and the first sealing ring 4 is a bowl-shaped sealing ring;

[0055] The slewing bearing 2 comprises an inner ring 2.1 and an outer ring 2.2, and the first sealing ring 4 is arranged between the inner ring 2.1 and the outer ring 2.2;

[0056] A rolling body 2.3 is arranged between the inner ring 2.1 and the outer ring 2.2;

[0057] The first sealing ring 4 comprises a sealing ring body 4.1, a groove 4.2 is formed inside the sealing ring body 4.1, an inner boss 4.3 and an outer boss 4.4 are formed inside and outside the groove 4.2, an outer sealing lip 4.5 is provided outside the sealing ring body 4.1, and an upper edge sealing lip 4.6 is provided on the upper side of the outer sealing lip 4.5;

[0058] The outer side of the sealing ring body 4.1 is provided with a concave reverse flow surface 4.7;

[0059] An inner ring sealing groove 2.4 is arranged on the outer peripheral wall of the inner ring 2.1, and an inner ring boss 2.5 is arranged outside the inner ring sealing groove 2.4;

[0060] The inner boss 4.3 cooperates with the inner ring sealing groove 2.4, the inner ring boss 2.5 cooperates with the groove 4.2, and the outer boss 4.4 is located outside the inner ring boss 2.5;

[0061] An outer ring sealing groove 2.6 is arranged on the inner circumferential wall of the outer ring 2.2, an outer ring boss 2.7 is arranged outside the outer ring sealing groove 2.6, the outer sealing lip 4.5 cooperates with the outer ring sealing groove 2.6, and the upper edge sealing lip 4.6 cooperates with the outer ring boss 2.7;

[0062] A second sealing ring 5 is arranged inside the slewing bearing 2, and the second sealing ring 5 is arranged between the inner ring 2.1 and the outer ring 2.2;

[0063] A third sealing ring 6 is provided between the inner ring 2.1 and the seat ring 1.1;

[0064] A first oil seal 7 is provided between the outer ring 2.2 and the base 1;

[0065] The shaft housing 1.2 is provided with an end cover 8 and a motor mounting seat 9 at the front and rear sides respectively, a fourth sealing ring 10 is provided between the end cover 8 and the shaft housing 1.2, and a fifth sealing ring 11 is provided between the motor mounting seat 9 and the shaft housing 1.2;

[0066] Two front and rear worm bearings 12 are arranged between the worm 3 and the shaft housing 1.2;

[0067] A second oil seal 13 is provided between the worm 3 and the shaft housing 1.2;

[0068] A third oil seal 14 is provided between the worm 3 and the motor mounting seat 9 .

[0069] Working principle:

[0070] The end cover and the shaft housing (base) are sealed with a sealing ring (static seal), the motor mounting seat and the shaft housing (base) are sealed with a sealing ring (static seal), the worm and the motor mounting seat are sealed with an oil seal (rotary dynamic seal), the inner ring and the seat ring (base) are sealed with a sealing ring (static seal), the exposed seal between the inner ring and the outer ring is a bowl-shaped sealing ring (rotary dynamic seal), and the outer ring and the seat ring (base) are sealed with an oil seal (dynamic seal);

[0071] The bowl-shaped sealing ring groove is installed on the outer side of the inner ring boss, and the inner boss of the bowl-shaped sealing ring is installed in the inner ring sealing groove to form a labyrinth seal;

[0072] The outer sealing lip of the bowl-shaped sealing ring is interference fit with the radial sealing surface of the inner wall of the outer ring sealing groove, and the upper sealing lip of the bowl-shaped sealing ring and the lower plane of the outer ring boss are auxiliary seals. The outer ring boss of the slewing bearing covers the upper sealing lip of the bowl-shaped sealing ring, and the external rainwater will not flow to the upper sealing lip of the bowl-shaped sealing ring, but will directly flow to the concave guide surface of the bowl-shaped sealing ring and automatically flow away without water accumulation.

[0073] The base, the outer ring of the slewing bearing, the seal, etc. form the gear lubrication sealing cavity inside the slewing reducer. When the gear lubrication sealing cavity is under negative pressure, the outer sealing lip of the bowl-shaped sealing ring is radially sealed with the inner sealing surface of the outer ring of the slewing bearing. When the housing sealing cavity is under positive pressure, the outer sealing lip and the upper sealing lip of the bowl-shaped sealing ring are radially and planarly sealed with the outer ring of the slewing bearing at the same time, thus achieving the sealing of the slewing reducer.

[0074] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A highly waterproof rotary reducer, characterized in that: The invention comprises a base (1), wherein the base (1) comprises a seat ring (1.1) and a shaft housing (1.2), wherein a slewing bearing (2) is arranged in the seat ring (1.1), wherein a worm (3) is arranged in the shaft housing (1.2), wherein the slewing bearing (2) cooperates with the worm (3), and wherein a first sealing ring (4) is arranged on the outer side of the slewing bearing (2), wherein the first sealing ring (4) is a bowl-shaped sealing ring.

2. A highly waterproof rotary reducer according to claim 1, characterized in that: The slewing bearing (2) comprises an inner ring (2.1) and an outer ring (2.2), and the first sealing ring (4) is arranged between the inner ring (2.1) and the outer ring (2.2).

3. A highly waterproof rotary reducer according to claim 2, characterized in that: A rolling body (2.3) is arranged between the inner ring (2.1) and the outer ring (2.2).

4. A highly waterproof rotary reducer according to claim 2, characterized in that: The first sealing ring (4) comprises a sealing ring body (4.1), a groove (4.2) is provided on the inner side of the sealing ring body (4.1), an inner boss (4.3) and an outer boss (4.4) are respectively formed on the inner and outer sides of the groove (4.2), an outer sealing lip (4.5) is provided on the outer side of the sealing ring body (4.1), and an upper edge sealing lip (4.6) is provided on the upper side of the outer sealing lip (4.5).

5. A highly waterproof rotary reducer according to claim 4, characterized in that: An inner concave reverse flow surface (4.7) is arranged on the outer side of the sealing ring body (4.1).

6. A highly waterproof rotary reducer according to claim 4, characterized in that: An inner ring sealing groove (2.4) is provided on the outer peripheral wall of the inner ring (2.1), and an inner ring boss (2.5) is provided outside the inner ring sealing groove (2.4).

7. A highly waterproof rotary reducer according to claim 6, characterized in that: The inner boss (4.3) matches the inner ring sealing groove (2.4), the inner ring boss (2.5) matches the groove (4.2), and the outer boss (4.4) is located outside the inner ring boss (2.5).

8. A highly waterproof rotary reducer according to claim 4, characterized in that: An outer ring sealing groove (2.6) is provided on the inner peripheral wall of the outer ring (2.2), an outer ring boss (2.7) is provided outside the outer ring sealing groove (2.6), the outer sealing lip (4.5) cooperates with the outer ring sealing groove (2.6), and the upper edge sealing lip (4.6) cooperates with the outer ring boss (2.7).

9. A highly waterproof rotary reducer according to claim 2, characterized in that: A second sealing ring (5) is arranged on the inner side of the slewing bearing (2), and the second sealing ring (5) is arranged between the inner ring (2.1) and the outer ring (2.2); a third sealing ring (6) is arranged between the inner ring (2.1) and the seat ring (1.1); and a first oil seal (7) is arranged between the outer ring (2.2) and the base (1).

10. A highly waterproof rotary reducer according to claim 1, characterized in that: The shaft housing (1.2) is provided with an end cover (8) and a motor mounting seat (9) at the front and rear sides respectively; a fourth sealing ring (10) is provided between the end cover (8) and the shaft housing (1.2); a fifth sealing ring (11) is provided between the motor mounting seat (9) and the shaft housing (1.2); a second oil seal (13) is provided between the worm (3) and the shaft housing (1.2); and a third oil seal (14) is provided between the worm (3) and the motor mounting seat (9).

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