Planetary reducer assembly for elevator traction machine

Abstract

The utility model 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 utility model relates to a planetary speed reducer assembly for an elevator traction machine, belonging to the technical field of speed reducers. Background Technique

[0002] Planetary gear speed reducers are often applied to the traction machines of elevators. The existing speed reducers are built into the traction wheels, and the speed reduction transmission components are directly connected to the traction wheels through screws to achieve the transmission and cooperation effect of the speed reducer on the traction wheels. Usually, each component of the speed reducer is transported to the site and installed one by one after being processed in the factory. The installation efficiency is low. If components need to be replaced, the previously installed parts have to be removed one by one, which is not convenient for later maintenance and requires a large amount of manpower. Therefore, a new solution is needed to solve this problem. Content of the Utility Model

[0003] The purpose of the utility model is to provide a planetary speed reducer assembly for an elevator traction machine to overcome the deficiencies of the prior art.

[0004] To achieve the above purpose, the technical scheme adopted by the utility model is: a planetary speed reducer assembly for an elevator traction machine, comprising a first housing, a second housing and a planetary assembly; the first housing and the second housing are fixedly connected, and an accommodation cavity is formed between the first housing and the second housing, and the planetary assembly is installed in the accommodation cavity and forms an integral body 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 fixedly connected with the first housing, the planet carrier extends towards both ends, and both ends of the planet carrier are respectively matched with the first housing and the second housing. Bearings are arranged at both ends of the sun gear, and both ends of the sun gear are rotationally matched with the planet carrier through bearings, and an input end is provided on the sun gear for cooperating with a driver; the plurality of planetary gears are all rotatably arranged on the planet carrier; each planetary gear meshes 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 matched with the planetary gears.

[0007] Preferably, a plurality of convex structures are arranged on the outer peripheral wall of the ring gear, and a plurality of groove structures matched with the convex structures are arranged on the inner wall of the first housing. The ring gear and the first housing are fixedly matched through the convex structures and the groove structures.

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

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

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

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

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

[0013] Preferably, the first housing and the second housing are fixedly connected by a plurality of bolts.

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

[0015] 1. By arranging the planetary assembly in the accommodation cavity between the first housing and the second housing, the planetary assembly, the first housing and the second housing form a modular structure. This 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. During the later maintenance process, it can be replaced as a whole without separately removing the parts, which greatly improves the convenience of maintenance and also reduces the labor cost.

[0016] 2. The overall structure of the present utility model is convenient for handling and transportation. At the same time, placing the planetary assembly in the accommodation cavity between the first housing and the second housing can reduce the entry of external dust into the accommodation cavity, thereby avoiding damage to internal parts caused by dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The technical solution of the present utility model will be further described below with reference to the drawings:

[0018] Att Figure 1 is a schematic structural diagram of a planetary speed reducer assembly for an elevator traction machine according to the present utility model;

[0019] Att Figure 2 is a schematic diagram from another perspective; Figure 1 is a schematic cross-sectional view of a planetary speed reducer assembly for an elevator traction machine according to the present utility model;

[0020] Att Figure 3 is a schematic structural diagram of the present utility model with the first housing and the second housing removed;

[0021] Att Figure 4 is a schematic structural diagram of the present utility model without the first housing and the second housing;

[0022] Appendix Figure 5 Structural schematic diagram of removing the gear ring Figure 4 ;

[0023] Appendix Figure 6 Structural schematic diagram of the first housing of the present utility model

[0024] Appendix Figure 7 Structural schematic diagram of the gear ring of the present utility model

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

[0026] The present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments

[0027] As shown in the appendix Figures 1-3 A planetary speed reducer assembly for an elevator traction machine according to the present utility model includes a first housing 1, a second housing 2 and a planetary assembly

[0028] The first housing 1 and the second housing 2 are fixedly connected by a plurality of bolts 17, and a receiving cavity is formed between the first housing 1 and the second housing 2. The planetary assembly is installed in the receiving cavity and forms an integral body with the first housing 1 and the second housing 2

[0029] Specifically, as shown in the appendix Figures 3-7 The planetary assembly includes a gear ring 3, a planet carrier 4, a sun gear 5 and a plurality of planet gears 6; the gear ring 3 is fixedly connected to the first housing 1. In this embodiment, a plurality of convex structures 8 are provided on the outer peripheral wall of the gear ring 3, and a plurality of groove structures 9 matching with the convex structures 8 are provided on the inner wall of the first housing 1. The gear ring 3 and the first housing 1 are fixedly matched by the convex structures 8 and the groove structures 9, which is equivalent to fixing the two by a structure of spline and keyway matching to improve the connection stability between the gear ring 3 and the first housing 1

[0030] The planet carrier 4 extends towards both ends, and the two ends of the planet carrier 4 are respectively engaged with the first housing 1 and the second housing 2. Bearings 18 are provided at both ends of the sun gear 5, and both ends of the sun gear 5 are rotationally engaged with the planet carrier through the bearings 18. An input end 19 is provided on the sun gear 5, and this input end 19 is used to cooperate with a driver; in this embodiment, the driver can be set as a motor to drive the sun gear 5. First bearings 10 and second bearings 11 are respectively provided at the two ends of the planet carrier 4. One end of the planet carrier 4 is rotationally engaged with the first housing 1 through the first bearing 10, and the other end of the planet carrier 4 is rotationally engaged with the second housing 2 through the second bearing 11.

[0031] A plurality of planet gears 6 are all rotatably arranged on the planet carrier 4; each planet gear 6 is engaged with the sun gear 5 and the ring gear 3. In this embodiment, the number of planet gears 6 is set to three, and it can also be changed according to the actual situation during actual application. The sun gear 5 and the plurality of planet gears 6 are all helical gears, and the ring gear 3 has a helical tooth structure 7 that cooperates with the planet gears 6 to improve the transmission accuracy and efficiency between the planet gears 6 and the sun gear 5 and the ring gear 3, and at the same time can also reduce vibration and noise; in addition, a plurality of notches 12 are provided on the planet carrier 4, and the plurality of notches 12 are all used for the planet gears 6 to be engaged with the ring gear 3, and the number of the notches 12 changes with the number of the planet gears 6.

[0032] Compared with the prior art, in this application, by arranging the planetary assembly in the accommodation cavity between the first housing 1 and the second housing 2, the planetary assembly, the first housing 1 and the second housing 2 form a modular structure. This 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. During the later maintenance process, it can be replaced as a whole without separately removing the parts, which greatly improves the convenience of maintenance and also reduces the labor cost. On the other hand, the overall structure is convenient for handling and transportation. At the same time, placing the planetary assembly in the accommodation cavity between the first housing 1 and the second housing 2 can reduce the entry of external dust into the accommodation cavity, thereby avoiding damage to the internal parts caused by dust.

[0033] An adjusting shim 13 is provided on the outer side wall of the second bearing 11 to adjust the clearance of the second bearing 11 and ensure the normal operation of the bearing and extend its service life.

[0034] 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 to ensure the sealing performance between the planet carrier 4 and the second housing 2.

[0035] As shown in the attached Figures 1-2As shown in the figure, an oil filling port is provided on the first housing 1 to facilitate the injection of lubricating oil into the first housing 1 to reduce the wear of internal parts. An oil plug 15 is provided on the oil filling port to seal the oil filling port. The lower end of the second housing 2 is provided with an oil drain port to facilitate the discharge of the old oil inside the second housing 2. An oil drain plug 16 is provided on the oil drain port to seal the oil drain port.

[0036] The above are only specific application examples of the present invention, which do not constitute any limitation to the protection scope of the present invention; all technical solutions formed by equivalent transformation or equivalent substitution fall within the scope of the rights protection of the present invention.

Claims

1. A planetary speed reducer assembly for an elevator traction machine, characterized in that: It includes a first housing (1), a second housing (2) and a planetary assembly; the first housing (1) and the second housing (2) are connected and fixed, and an accommodation cavity is formed between the first housing (1) and the second housing (2), and the planetary assembly is installed in the accommodation cavity and forms an integral body with the first housing (1) and the second housing (2); The planetary assembly includes a ring gear (3), a planet carrier (4), a sun gear (5) and a plurality of planet gears (6); the ring gear (3) is connected and fixed to the first housing (1), the planet carrier (4) extends towards both ends, and both ends of the planet carrier (4) are respectively matched with the first housing (1) and the second housing (2), bearings (18) are arranged at both ends of the sun gear (5), and both ends of the sun gear (5) are rotationally matched with the planet carrier through the bearings (18), and an input end (19) is provided on the sun gear (5), and this input end (19) is used to cooperate with a driver; a plurality of the planet gears (6) are all rotatably arranged on the planet carrier (4); each planet gear (6) meshes with the sun gear (5) and the ring gear (3).

2. The planetary speed reducer assembly for an elevator traction machine according to claim 1, wherein: Both the sun gear (5) and the plurality of planet gears (6) are helical gears, and the ring gear (3) has a helical tooth structure (7) that cooperates with the planet gears (6).

3. The planetary speed reducer assembly for an elevator traction machine according to claim 1, characterized in that: A plurality of convex structures (8) are arranged on the outer peripheral wall of the ring gear (3), and a plurality of groove structures (9) that cooperate with the convex structures (8) are provided on the inner wall of the first housing (1), and the ring gear (3) and the first housing (1) are fixedly matched through the convex structures (8) and the groove structures (9).

4. The planetary reducer assembly for an elevator traction machine according to claim 1, wherein: A first bearing (10) and a second bearing (11) are respectively arranged at both ends of the planet carrier (4), one end of the planet carrier (4) is rotationally matched with the first housing (1) through the first bearing (10), and the other end of the planet carrier (4) is rotationally matched with the second housing (2) through the second bearing (11).

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

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

7. The planetary speed reducer assembly for an elevator traction machine according to claim 1, characterized in that: An oil seal (14) is arranged 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. A planetary speed reducer assembly for an elevator traction machine according to claim 1, characterized in that: An oil filling port is arranged on the first housing (1), and an oil plug (15) is arranged on the oil filling port; a drain port is arranged at the lower end of the second housing (2), and a drain plug (16) is arranged on the drain port.

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

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