Planetary reducer assembly for elevator traction machine

Abstract

The invention discloses a planetary reducer assembly for an elevator traction machine, which relates to the technical field of reducers and comprises a first shell, a second shell and a planetary component. The first shell and the second shell are connected and fixed, a containing cavity is formed between the first shell and the second shell, the planetary assembly is installed in the containing cavity, and the planetary assembly, the first shell and the second shell form a whole; the planet assembly comprises a gear ring, a planet carrier, a sun gear and a plurality of planet gears. According to the scheme, the planetary assembly is arranged in the containing cavity between the first shell and the second shell, so that the planetary assembly, the first shell and the second shell form a modular structure, the modular structure can be prefabricated in batches in a factory and transported to a site to be integrally installed after being prefabricated, and therefore the machining efficiency and the installation efficiency are improved; in the later maintenance process, overall replacement can be achieved, parts do not need to be detached independently, the maintenance convenience is greatly improved, and meanwhile the labor cost is reduced.

Description

Technical Field

[0001] The invention relates to a planetary reducer assembly for an elevator traction machine, belonging to the technical field of reducers. Background Art

[0002] Planetary gear reducers are often used in elevator traction machines. The existing reducers are built into the traction wheel, and the reduction transmission assembly is directly connected to the traction wheel through screws to achieve the transmission coordination effect of the reducer on the traction wheel. The various components of the reducer are often shipped from the factory to the site for installation one by one after being processed. The installation efficiency is low. If parts need to be replaced, the previously installed parts must be removed one by one, which is not convenient for later maintenance and requires a lot of manpower. Therefore, a new solution is needed to solve this problem. Summary of the invention

[0003] In view of the above-mentioned technical problems, the purpose of the present invention is to provide a planetary reducer assembly for an elevator traction machine.

[0004] The technical solution of the present invention is achieved as follows: A planetary reducer assembly for an elevator traction machine comprises a first housing, a second housing and a planetary assembly; the first housing and the second housing are connected and fixed, and an accommodating cavity is formed between the first housing and the second housing, the planetary assembly is installed in the accommodating cavity, and forms a whole with the first housing and the second housing;

[0005] The planetary assembly includes a ring gear, a planet carrier, a sun gear and a plurality of planetary gears; the ring gear is connected and fixed to the first housing, the planet carrier extends to both ends, and the two ends of the planet carrier are respectively matched with the first housing and the second housing, bearings are provided at both ends of the sun gear, and both ends of the sun gear are rotatably matched with the planet carrier through the bearings, and the sun gear has an input end, which is used to cooperate with the driver; the plurality of planetary gears are rotatably set on the planet carrier; each planetary gear is meshed with the sun gear and the ring gear.

[0006] Preferably, the sun gear and the plurality of planetary gears are all helical gears, and the ring gear has a helical tooth structure that matches the planetary gears.

[0007] Preferably, a plurality of protrusion structures are provided on the outer peripheral wall of the gear ring, a plurality of groove structures cooperating with the protrusion structures are opened on the inner wall of the first shell, and the gear ring and the first shell are fixed by the cooperation of the protrusion structures and the groove structures.

[0008] Preferably, a first bearing and a second bearing are respectively provided at both ends of the planet carrier, one end of the planet carrier is rotatably matched with the first housing through the first bearing, and the other end of the planet carrier is rotatably matched with the second housing through the second bearing.

[0009] Preferably, the planet carrier has a plurality of notches, and the plurality of notches are used for the planetary gears to mesh with the ring gear.

[0010] Preferably, an adjustment gasket is provided on the outer side wall of the second bearing.

[0011] Preferably, an oil seal is provided at one end portion of the planet carrier close to the second housing, and the oil seal is located on the outside of the second bearing.

[0012] Preferably, the first shell is provided with an oil filling port, and an oil plug is provided on the oil filling port; the lower end of the second shell is provided with an oil drain port, and an oil drain plug is provided on the oil drain port.

[0013] Preferably, the first shell and the second shell are fixed by a plurality of bolts.

[0014] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0015] 1. The present invention arranges the planetary assembly in the accommodating cavity between the first shell and the second shell, so that the planetary assembly, the first shell and the second shell form a modular structure. The modular structure can be prefabricated in batches in a factory and transported to the site for overall installation after prefabrication, thereby improving processing efficiency and installation efficiency. In the later maintenance process, the entire structure can be replaced without removing the parts separately, thereby greatly improving the convenience of maintenance and reducing labor costs.

[0016] 2. The overall structure of the present invention is convenient for handling and transportation. At the same time, placing the planetary assembly in the accommodating cavity between the first shell and the second shell can reduce the entry of external dust into the accommodating cavity, thereby preventing dust from damaging internal parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0018] Attached Figure 1 It is a structural schematic diagram of a planetary reducer assembly for an elevator traction machine according to the present invention;

[0019] Attached Figure 2 For attachment Figure 1 Schematic diagram from another perspective;

[0020] Attached Figure 3 A cross-sectional view of a planetary reducer assembly for an elevator traction machine according to the present invention;

[0021] Attached Figure 4 This is a schematic diagram of the structure of the present invention without the first shell and the second shell;

[0022] Attached Figure 5 For attachment Figure 4 Schematic diagram of the structure without the gear ring;

[0023] Attached Figure 6 is a schematic structural diagram of the first shell of the present invention;

[0024] Attached Figure 7 It is a schematic structural diagram of the gear ring of the present invention.

[0025] In the figure: 1. first housing; 2. second housing; 3. ring gear; 4. planet carrier; 5. sun gear; 6. planetary gear; 7. helical tooth structure; 8. protrusion structure; 9. groove structure; 10. first bearing; 11. second bearing; 12. notch; 13. adjusting gasket; 14. oil seal; 15. oil plug; 16. oil drain plug; 17. bolt; 18. bearing; 19. input end. DETAILED DESCRIPTION

[0026] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "straight", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] As attached Figure 1-3 As shown, a planetary reducer assembly for an elevator traction machine according to the present invention comprises a first housing 1, a second housing 2 and a planetary component.

[0030] The first shell 1 and the second shell 2 are connected and fixed by a plurality of bolts 17 , and an accommodating cavity is formed between the first shell 1 and the second shell 2 . The planetary assembly is installed in the accommodating cavity and forms a whole with the first shell 1 and the second shell 2 .

[0031] Specifically, as attached Figure 3-7 As shown, the planetary assembly includes a ring gear 3, a planet carrier 4, a sun gear 5 and a plurality of planetary gears 6; the ring gear 3 is connected and fixed to the first shell 1. In this embodiment, a plurality of protrusion structures 8 are provided on the outer peripheral wall of the ring gear 3, and a plurality of groove structures 9 cooperating with the protrusion structures 8 are opened on the inner wall of the first shell 1. The ring gear 3 and the first shell 1 are fixed by the protrusion structures 8 and the groove structures 9, which is equivalent to fixing the two by using a structure of spline and keyway cooperation to improve the connection stability between the ring gear 3 and the first shell 1.

[0032] The planet carrier 4 extends to both ends, and the two ends of the planet carrier 4 are respectively matched with the first shell 1 and the second shell 2. Bearings 18 are provided at both ends of the sun gear 5. Both ends of the sun gear 5 are rotatably matched with the planet carrier through the bearings 18, and the sun gear 5 has an input end 19, which is used to match the driver; in this embodiment, the driver can be set as a motor to drive the sun gear 5. The first bearing 10 and the second bearing 11 are respectively provided at both ends of the planet carrier 4. One end of the planet carrier 4 is rotatably matched with the first shell 1 through the first bearing 10, and the other end of the planet carrier 4 is rotatably matched with the second shell 2 through the second bearing 11.

[0033] Multiple planetary gears 6 are rotatably set on the planetary carrier 4; each planetary gear 6 is meshed with the sun gear 5 and the ring gear 3. In the present embodiment, the number of planetary gears 6 is set to three, which can also be changed as needed in actual application. The sun gear 5 and the multiple planetary gears 6 are all helical gears, and the ring gear 3 has a helical tooth structure 7 that matches the planetary gears 6 to improve the transmission accuracy and efficiency of the planetary gears 6, the sun gear 5 and the ring gear 3, while also reducing vibration and noise; in addition, the planetary carrier 4 has a plurality of notches 12, and the plurality of notches 12 are used for the planetary gears 6 to mesh with the ring gear 3, and the number of the notches 12 changes with the number of the planetary gears 6.

[0034] Compared with the prior art, the present application forms a modular structure among the planetary assembly, the first shell 1 and the second shell 2 by arranging the planetary assembly in the accommodating chamber between the first shell 1 and the second shell 2. The modular structure can be prefabricated in batches in the factory and transported to the site for overall installation after prefabrication, thereby improving the processing efficiency and installation efficiency. The entire structure can be replaced during later maintenance without the need to remove the components separately, thereby greatly improving the convenience of maintenance and reducing labor costs. On the other hand, the overall structure is easy to carry and transport. At the same time, placing the planetary assembly in the accommodating chamber between the first shell 1 and the second shell 2 can reduce the entry of external dust into the accommodating chamber, thereby preventing dust from damaging internal parts.

[0035] An adjusting washer 13 is provided on the outer side wall of the second bearing 11 to adjust the clearance of the second bearing 11 to ensure the normal operation of the bearing and extend its service life.

[0036] An oil seal 14 is provided at one end of the planet carrier 4 close to the second housing 2 . The oil seal 14 is located outside the second bearing 11 to ensure sealing between the planet carrier 4 and the second housing 2 .

[0037] As attached Figure 1-2 As shown, the first shell 1 is provided with an oil filling port to facilitate the injection of lubricating oil into the first shell 1 to reduce the wear of internal parts, and an oil plug 15 is provided on the oil filling port to seal the oil filling port; the lower end of the second shell 2 is provided with an oil drain port to facilitate the discharge of old oil inside the second shell 2, and an oil drain plug 16 is provided on the oil drain port to seal the oil drain port.

[0038] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A planetary reducer assembly for an elevator traction machine, characterized in that: The invention comprises a first shell (1), a second shell (2) and a planetary assembly; the first shell (1) and the second shell (2) are connected and fixed, and a receiving cavity is formed between the first shell (1) and the second shell (2); the planetary assembly is installed in the receiving cavity and forms a whole with the first shell (1) and the second shell (2); The planetary assembly comprises a ring gear (3), a planet carrier (4), a sun gear (5) and a plurality of planetary gears (6); the ring gear (3) is connected and fixed to the first housing (1); the planet carrier (4) extends to two ends, and the two ends of the planet carrier (4) are respectively matched with the first housing (1) and the second housing (2); bearings (18) are provided at both ends of the sun gear (5); both ends of the sun gear (5) are rotatably matched with the planet carrier through the bearings (18); and the sun gear (5) has an input end (19) which is used to match the driver; the plurality of planetary gears (6) are rotatably arranged on the planet carrier (4); and each planetary gear (6) is meshed with the sun gear (5) and the ring gear (3).

2. A planetary reducer assembly for an elevator traction machine according to claim 1, characterized in that: The sun gear (5) and the plurality of planetary gears (6) are all helical gears, and the ring gear (3) has a helical tooth structure (7) that matches the planetary gears (6).

3. A planetary reducer assembly for an elevator traction machine according to claim 1, characterized in that: A plurality of protrusion structures (8) are arranged on the outer peripheral wall of the gear ring (3), and a plurality of groove structures (9) cooperating with the protrusion structures (8) are opened on the inner wall of the first shell (1); the gear ring (3) and the first shell (1) are fixed by the protrusion structures (8) and the groove structures (9).

4. A planetary reducer assembly for an elevator traction machine according to claim 1, characterized in that: The two ends of the planet carrier (4) are respectively provided with a first bearing (10) and a second bearing (11); one end of the planet carrier (4) is rotatably engaged with the first housing (1) via the first bearing (10); and the other end of the planet carrier (4) is rotatably engaged with the second housing (2) via the second bearing (11).

5. A planetary reducer assembly for an elevator traction machine according to claim 1 or 4, characterized in that: The planet carrier (4) is provided with a plurality of notches (12), and the plurality of notches (12) are all used for the planetary gears (6) to mesh with the ring gear (3).

6. A planetary reducer assembly for an elevator traction machine according to claim 4, characterized in that: An adjustment gasket (13) is provided on the outer side wall of the second bearing (11).

7. A planetary reducer assembly for an elevator traction machine according to claim 1, characterized in that: An oil seal (14) is provided at one end of the planet carrier (4) close to the second housing (2), and the oil seal (14) is located outside the second bearing (11).

8. The planetary reducer assembly for an elevator traction machine according to claim 1, characterized in that: The first housing (1) is provided with an oil filling port, and an oil plug (15) is provided on the oil filling port; the lower end of the second housing (2) is provided with an oil drain port, and an oil drain plug (16) is provided on the oil drain port.

9. A planetary reducer assembly for an elevator traction machine according to claim 1, characterized in that: The first shell (1) and the second shell (2) are connected and fixed by a plurality of bolts (17).

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