Planetary speed-increasing gearbox

Abstract

The utility model relates to the technical field of speed changing equipment, and discloses a planet speed increasing box which comprises a shell cover, an outer gear ring is fixed in the shell cover, an opening is formed in one side face, perpendicular to the axial direction of the outer gear ring, of the shell cover, an end cover is installed on the opening of the shell cover, and the end cover is in press fit with the outer gear ring. The shell cover and the end cover are jointly and rotationally connected with a planet carrier, the planet carrier is of a split structure, a plurality of planet wheels are rotationally installed on the planet carrier, planet wheel shafts of the planet wheels are installed on the planet carrier through fixing pieces, the planet wheels are all meshed with the outer gear ring, the end cover is rotationally connected with a sun wheel, and the sun wheel is meshed with the sun wheel. According to the device, the problem that installation is inconvenient when the planet wheel shaft and the planet carrier are in interference fit is solved, one end of the planet wheel shaft is arranged to be in clearance fit with the planet carrier, the planet wheel shaft and the planet carrier are connected and fixed through the fixing piece, meanwhile, the outer gear ring can be fixed while the end cover is closed in a covering mode, and assembling is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of speed changing equipment, and more specifically, to a planetary speed increasing box. Background Art

[0002] Planetary speed increasers, comprised of planetary gear sets, offer advantages such as compact size, light weight, high load capacity, smooth and quiet operation, high speed ratios, and high efficiency. They are widely used in industries such as lifting and transportation, engineering machinery, metallurgy, mining, petrochemicals, and construction machinery. The planetary gear set is its transmission component, supported by the axle, planetary carrier, and outer ring gear to ensure transmission stability.

[0003] Chinese utility model patent application number 202322170015.X discloses a planetary gear mounting structure for a reducer, in which an interference fit connection is set between the planetary gear shaft and the planetary carrier, and axial limitation is achieved by a retaining spring. During installation, the interference fit connection components need to be knocked together, which is time-consuming and labor-intensive. In addition, for a double-layer planetary carrier structure, it is difficult to align the shaft holes during installation, making installation inconvenient and prone to shaft wear, affecting the overall transmission performance. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a planetary speed increaser that is easy to assemble.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A planetary speed increaser comprises a housing, wherein a base is provided at the bottom of the housing, a cover is provided at the top of the housing, an outer ring gear is fixed in the housing, an opening is provided on a side surface of the housing perpendicular to the axial direction of the outer ring gear, an end cover is installed on the opening of the housing, the end cover is pressed into engagement with the outer ring gear, a planet carrier is rotatably connected to the housing and the end cover, the planet carrier is a split structure, a plurality of planetary gears are rotatably installed on the planet carrier, the planetary gear shafts of the planetary gears are installed on the planet carrier via fixing plates, a plurality of the planetary gears are meshed with the outer ring gear, a sun gear is rotatably connected to the end cover, and the sun gear is meshed with the planetary gears.

[0007] The utility model is further configured as follows: the planetary frame includes a left frame body and a right frame body, a central axis is provided on the axis center of the left frame body on the side away from the right frame body, the central axis is rotatably connected to the shell cover, a connecting ring is provided on the side of the right frame body away from the left frame body, the connecting ring is rotatably connected to the end cover, the planetary gear shaft is interference-connected with the right frame body, the planetary gear shaft is clearance-fitted with the left frame body, and the fixing plate is installed on the left frame body and the planetary gear shaft.

[0008] The utility model is further configured as follows: the fixing plate includes a card, the end of the planetary gear shaft facing away from the right frame extends out of the left frame, the end of the planetary gear shaft extending out of the left frame is provided with a card slot, one end of the card is engaged with the card slot, the other end of the card is fixed to the left frame by a bolt, a limiting rod is provided on the side of the card in contact with the card slot, and the limiting rod radially penetrates the planetary gear shaft.

[0009] The present invention is further configured as follows: a plurality of support frames are provided in the shell cover, and the plurality of support frames are evenly distributed along the circumferential direction coaxial with the planetary frame, one end of the support frame is fixed on the shell cover, and a limiting block is provided on the other end of the support frame, and a clamping block is provided on the side of the limiting block facing away from the shell cover, and the clamping block is configured in a tooth shape, and the clamping block is engaged with the outer gear ring, and the limiting block abuts against the end face of the outer gear ring.

[0010] The utility model is further configured as follows: a plurality of fixing frames are provided on the side of the end cover facing the inside of the shell, and the plurality of fixing frames are provided corresponding to the support frames. The fixing frames include a second clamping block and a second limiting block. The second clamping block is engaged with the outer gear ring, and the second limiting block and the first limiting block jointly clamp the outer gear ring.

[0011] The utility model is further configured as follows: an oil baffle is provided on the top of the shell cover, the oil baffle is separated between the outer gear ring and the cover, and the connecting ring is rotatably connected to the sun gear shaft of the sun gear.

[0012] The advantages of the utility model are:

[0013] 1. Set the double-layer planetary carrier to a split type. One end of the planetary gear shaft is connected to the right frame body with an interference fit. After knocking all the planetary gear shafts installed with planetary gears into the right frame body, the left frame body is passed through all the planetary gear shafts, and then the card is inserted and fixed with bolts. The connection between the planetary gear and the planetary carrier is completed. The planetary gear shaft and the left frame body have a clearance fit. The left frame body can be easily plugged into all the planetary gear shafts, which is convenient for installation. When fixed with a fixing plate, knocking during interference fit installation is avoided, and impact on the connection between the right frame body and the planetary gear shaft is avoided, thus ensuring the stability of the connection.

[0014] 2. Several support frames are provided in the shell cover. The teeth of the outer gear ring are engaged with the block 1 of the support frame. The limit block 1 of the support frame abuts against the end face of the outer gear ring. Several fixing frames are correspondingly provided on the end cover on the other side. The block 2 of the fixing frame is also engaged with the outer gear ring. The limit block 2 and the corresponding limit block 1 press the outer gear ring together, so that the outer gear ring is fixed in the shell cover while the end cover is installed. No additional fixed connection is required, which is convenient for assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic structural diagram of an embodiment of the present utility model;

[0016] Figure 2 For the Figure 1 The AA line cross-section shown;

[0017] Figure 3 This is a schematic diagram of the planetary carrier structure of the present utility model;

[0018] Figure 4 for Figure 3 An enlarged view of part B is shown;

[0019] Figure 5 This is a schematic diagram of the end cover structure of the utility model;

[0020] Figure 6 This is a schematic diagram of the shell structure of the utility model;

[0021] In the figure: 1. Shell cover; 11. Oil baffle; 12. Support frame; 121. Block 1; 122. Limit block 1; 2. End cover; 21. Fixing frame; 211. Block 2; 212. Limit block 2; 3. Base; 4. Cover; 5. Sun gear; 51. Sun gear shaft; 6. Planet gear; 61. Planet gear shaft; 611. Slot; 7. Outer ring gear; 8. Planet carrier; 81. Left frame; 82. Right frame; 83. Middle shaft; 84. Connecting ring; 9. Fixing plate; 91. Card; 92. Limit rod; 93. Bolt. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0024] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0025] See also Figure 1-6 , the utility model provides the following technical solutions:

[0026] A planetary speed increaser comprises a housing 1, a base 3 is provided at the bottom of the housing 1, a cover 4 is provided at the top of the housing 1, an outer gear ring 7 is fixed in the housing 1, an opening is provided on the right side surface of the housing 1 for internal structure assembly, an end cover 2 is installed on the opening of the housing 1, and the end cover 2 is installed to press the outer gear ring 7 onto the housing 1 to fix the outer gear ring 7; a planet carrier 8 is rotatably connected to the housing 1 and the end cover 2, and the planet carrier 8 is a split structure, and a number of planetary gears 6 are rotatably installed on the planet carrier 8, and the planetary gear shaft 61 of the planetary gear 6 is fixed to the planet carrier 8 by a fixing plate 9, and the fixing plate 9 replaces the interference connection in the current technology, which is not easy to cause impact on the connection between the planetary gear shaft 61 and the planet carrier 8, thereby ensuring the assembly accuracy; a number of planetary gears 6 are all meshed with the outer gear ring 7, and a sun gear 5 is rotatably connected to the end cover 2, and the sun gear 5 is meshed with the planetary gear 6.

[0027] The planetary carrier 8 includes a left frame body 81 and a right frame body 82. The left axis of the left frame body 81 is provided with a central shaft 83, and the central shaft 83 is rotatably connected to the shell cover 1. The right side of the right frame body 82 is provided with a connecting ring 84, and the connecting ring 84 is rotatably connected to the end cover 2. The planetary gear shaft 61 is interference-connected with the axial hole of the right frame body 82. The planetary gear shaft 61 and the axial hole of the left frame body 81 are clearance-fitted. The fixing plate 9 is installed on the left frame body 81 and the planetary gear shaft 61. The fixing plate 9 has a limiting effect on the planetary gear shaft 61 to prevent the planetary gear shaft 61 from moving axially or circumferentially, thereby ensuring the fixation of the position between the left frame body 81 and the right frame body 82, and the fixation of the position of the planetary gear 6 thereon, and the central shaft 83 and the connecting ring 84 jointly fix the planetary carrier 8 in the shell cover 1, thereby ensuring the stability of the rotation of the planetary carrier 8;

[0028] During assembly, first install the planetary gear 6 on the fixed position of the planetary gear shaft 61, and then knock the planetary gear shaft 61 into the axial hole of the right frame 82 to ensure that the planetary gear shaft 61 is inserted into the right frame 82 to a certain length, that is, the end faces of all planetary gears 6 are in the same plane, and then plug the left frame 81 onto all planetary gear shafts 61, and fix the planetary gear shaft 61 on the left frame 81 with the fixing plate 9. Because the axial hole of the left frame 81 and the planetary gear shaft 61 are gap-connected, the left frame 81 is easily plugged into the planetary gear shaft 61, eliminating the need for fine alignment and knocking assembly, reducing damage to the planetary gear shaft 61 during assembly, and no vibration shock is generated, preventing the connection between the planetary gear shaft 61 and the right frame 82 from slipping, and the installation is convenient and the connection is stable.

[0029] The fixing plate 9 includes a card 91. The left end of the planetary shaft 61 extends out of the left frame 81 and is provided with a slot 611 along the circumference. One end of the card 91 is engaged with the slot 611, and the other end of the card 91 is fixed to the left frame 81 by a bolt 93. A limiting rod 92 is provided on the side where the card 91 contacts the slot 611. The limiting rod 92 radially penetrates the planetary shaft 61. The card 91 fixes the axial and circumferential position of the planetary shaft 61 through the slot 611 and the limiting rod 92, thereby ensuring that the planetary shaft 61 will not move and the transmission accuracy of the planetary gear 6 is ensured.

[0030] A plurality of support frames 12 are provided in the housing 1. The support frames 12 are evenly distributed along the circumference coaxial with the planetary carrier 8. One end of the support frame 12 is fixed to the housing 1. A limit block 122 is provided at the other end of the support frame 12. A clamping block 121 is provided on the side of the limit block 122 facing away from the housing 1. The clamping block 121 is configured in a tooth shape and meshes with the outer gear ring 7. The limit block 122 abuts against the end face of the outer gear ring 7.

[0031] A plurality of fixing frames 21 are provided on the side of the end cover 2 facing the inside of the shell cover 1. The plurality of fixing frames 21 are provided corresponding to the support frame 12. The fixing frame 21 includes a second clamping block 211 and a second limiting block 212. The second clamping block 211 is engaged with the outer gear ring 7. The second limiting block 212 and the first limiting block 122 jointly clamp the outer gear ring 7. When the end cover 2 is closed, the fixing frame 21 automatically cooperates with the support frame 12 to fix the outer gear ring 7 in the shell cover 1 without the need for additional assembly procedures, and the installation is convenient.

[0032] An oil baffle 11 is provided on the top of the housing 1, and the oil baffle 11 is separated between the outer ring gear 7 and the cover 4 to prevent the oil from being thrown out of the housing 1 when the gear set rotates. The connecting ring 84 is rotatably connected to the sun gear shaft 51 of the sun gear 5, thereby improving the rotation stability of the planetary carrier 8.

[0033] Specifically, the double-layer planetary carrier 6 is set to a split type, one end of the planetary gear shaft 61 is interference-connected with the right frame body 82, and after all the planetary gear shafts 61 with the planetary gears 6 are knocked into the right frame body 82, the left frame body 81 is passed through all the planetary gear shafts 61, and then the card 91 is inserted and fixed with bolts 93, thus completing the connection between the planetary gears 6 and the planetary carrier 8. The planetary gear shafts 61 and the left frame body 81 are clearance-fitted, and the left frame body 81 can be easily plugged into all the planetary gear shafts 61, which is convenient for installation. When fixed by the fixing plate 9, knocking during interference connection installation is avoided, and impact on the connection between the right frame body 82 and the planetary gear shaft 61 is avoided, thereby ensuring the stability of the connection.

[0034] Several support frames 12 are provided in the shell cover 1, and the teeth of the outer ring gear 7 are engaged with the block 121 of the support frame 12, and the limit block 122 of the support frame 12 is in contact with the end face of the outer ring gear 7. Several fixing frames 21 are correspondingly provided on the end cover 2 on the other side, and the block 211 of the fixing frame 21 is also engaged with the outer ring gear 7. The limit block 212 and the corresponding limit block 122 press the outer ring gear 7 together, so that the outer ring gear 7 is fixed in the shell cover 1 while the end cover 2 is installed, without the need for additional fixed connection, which is convenient for assembly.

[0035] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0036] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0037] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar pairs of elements and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A planetary speed increaser, comprising a housing (1), wherein a base (3) is disposed at the bottom of the housing (1), and a cover (4) is disposed at the top of the housing (1), wherein: An outer gear ring (7) is fixed inside the shell cover (1). An opening is provided on a side surface of the shell cover (1) perpendicular to the axial direction of the outer gear ring (7). An end cover (2) is mounted on the opening of the shell cover (1). The end cover (2) is pressed together with the outer gear ring (7). A planet carrier (8) is rotatably connected to the shell cover (1) and the end cover (2). The planet carrier (8) is a split structure. A plurality of planetary gears (6) are rotatably mounted on the planet carrier (8). The planetary gear shafts (61) of the planetary gears (6) are mounted on the planet carrier (8) via fixing plates (9). The plurality of planetary gears (6) are all meshed with the outer gear ring (7). A sun gear (5) is rotatably connected to the end cover (2). The sun gear (5) is meshed with the planetary gears (6).

2. A planetary speed increaser according to claim 1, characterized in that: The planetary frame (8) comprises a left frame body (81) and a right frame body (82); a central axis (83) is arranged on the axis of a side of the left frame body (81) away from the right frame body (82); the central axis (83) is rotatably connected to the shell cover (1); a connecting ring (84) is arranged on the side of the right frame body (82) away from the left frame body (81); the connecting ring (84) is rotatably connected to the end cover (2); the planetary gear shaft (61) is interference-connected with the right frame body (82); the planetary gear shaft (61) is clearance-matched with the left frame body (81); and the fixing plate (9) is mounted on the left frame body (81) and the planetary gear shaft (61).

3. A planetary speed increaser according to claim 2, characterized in that: The fixing plate (9) comprises a card (91); one end of the planetary gear shaft (61) facing away from the right frame (82) extends out of the left frame (81); one end of the planetary gear shaft (61) extending out of the left frame (81) is provided with a card slot (611); one end of the card (91) is engaged with the card slot (611); the other end of the card (91) is fixed to the left frame (81) by a bolt (93); a limiting rod (92) is provided on the side of the card (91) in contact with the card slot (611); the limiting rod (92) radially penetrates the planetary gear shaft (61).

4. A planetary speed increaser according to claim 3, characterized in that: A plurality of support frames (12) are arranged in the shell cover (1), and the plurality of support frames (12) are evenly distributed along a circumferential direction coaxial with the planetary frame (8); one end of the support frame (12) is fixed on the shell cover (1), and a limiting block (122) is arranged at the other end of the support frame (12); a clamping block (121) is arranged on the side of the limiting block (122) away from the shell cover (1), and the clamping block (121) is arranged in a tooth shape, and the clamping block (121) is meshed with the outer gear ring (7), and the limiting block (122) abuts against the end surface of the outer gear ring (7).

5. A planetary speed increaser according to claim 4, characterized in that: A plurality of fixing frames (21) are arranged on one side of the end cover (2) facing the inside of the shell cover (1); the plurality of fixing frames (21) are arranged corresponding to the support frame (12); the fixing frames (21) include a second clamping block (211) and a second limiting block (212); the second clamping block (211) is meshed with the outer gear ring (7); the second limiting block (212) and the first limiting block (122) jointly clamp the outer gear ring (7).

6. A planetary speed increaser according to claim 5, characterized in that: An oil baffle (11) is provided on the top of the shell cover (1), and the oil baffle (11) is separated between the outer gear ring (7) and the cover (4). The connecting ring (84) is rotatably connected to the sun gear shaft (51) of the sun gear (5).

Images