Gearbox

Abstract

The utility model relates to the technical field of gear boxes, and provides a gear box. The box body is provided with a first oil way. The planetary transmission assembly is installed in the box body and comprises a planet carrier, a pin shaft and a planetary gear, the pin shaft is fixed to a center plate of the planet carrier, the pin shaft is sleeved with the planetary gear through a first bearing, the center plate is provided with a second oil way, the pin shaft is provided with a third oil way, and the third oil way provides oil for the planetary gear and the first bearing; the sliding ring is installed in the box body and arranged outside the center plate in a sleeving mode, and the sliding ring is provided with a fourth oil way. A user can supply oil to lubricate the planetary gear through the first oil way, the fourth oil way, the second oil way and the third oil way which are communicated in sequence, so that the transmission efficiency of the planetary gear is higher. The sliding ring is arranged on the peripheral side of the center plate in a sleeving mode, the overall length of the planet carrier can be shortened, then the overall length of the gearbox can be shortened, the weight of the gearbox is reduced, and therefore the gearbox is lower in cost and more compact in structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear box technical field especially relates to a gear box. BACKGROUND

[0002] Wind power engine set can through the wind energy conversion into electric energy. Usually the rotational speed of wind wheel is very low, far from reaching the rotational speed required by generator power generation, must through the gear box gear pair speed increasing effect to realize.

[0003] In planetary gear structure, planetary gear bearing, sun wheel engagement all need lubricating oil lubrication, lubricating oil is generally injected from the box, through the sliding ring between the planet carrier and the box, lubricating oil is delivered to each lubricating point of planet carrier. The conventional sliding ring is generally designed at the end of planet carrier, or other axial position, this kind of sliding ring structure needs to occupy the axial space of planet carrier, leading to the gear box axial size is larger.

[0004] Therefore, an urgent need arises for a gear box to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The utility model discloses a gear box can supply oil lubrication to planetary gear, can also reduce the axial volume of the whole gear box.

[0006] To achieve this purpose, the utility model adopts the following technical scheme:

[0007] The gear box comprises:

[0008] The box is provided with a first oil channel.

[0009] The planetary transmission assembly is installed in the box, and comprises a planet carrier, a pin shaft and a planetary gear. The pin shaft is fixed to the web plate of the planet carrier, and the planetary gear is sleeved on the pin shaft through a first bearing. The web plate is provided with a second oil channel, and the pin shaft is provided with a third oil channel. The second oil channel and the third oil channel are communicated, and the third oil channel provides oil for the planetary gear and the first bearing.

[0010] The sliding ring is installed in the box and sleeved on the outside of the web plate. The sliding ring is provided with a fourth oil channel. The first oil channel is communicated with the second oil channel through the fourth oil channel.

[0011] As a preferred technical scheme of the gear box, the sliding ring is fixed to the web plate.

[0012] As a kind of preferred technical scheme of the above-mentioned gear box, the fourth oil passage includes a first oil groove and a first through hole, the first oil groove is arranged on the outer circumferential wall of the slip ring and is communicated with the first oil passage, the first through hole is arranged in the first oil groove, and the oil can enter the second oil passage in sequence through the first oil passage, the first oil groove and the first through hole.

[0013] As a kind of preferred technical scheme of the above-mentioned gear box, the slip ring is fixed with the box.

[0014] As a kind of preferred technical scheme of the above-mentioned gear box, the fourth oil passage includes a first oil groove and a first through hole, the first oil groove is arranged on the outer circumferential wall of the slip ring and is communicated with the first oil passage, the first through hole is arranged in the first oil groove, and the oil can enter the second oil passage in sequence through the first oil passage, the first oil groove and the first through hole.

[0015] As a kind of preferred technical scheme of the above-mentioned gear box, the fourth oil passage includes a first oil groove and a first through hole, the first oil groove is arranged on the outer circumferential wall of the slip ring and is communicated with the first oil passage, the first through hole is arranged in the first oil groove, and the oil can enter the second oil passage in sequence through the first oil passage, the first oil groove and the first through hole.

[0016] As a kind of preferred technical scheme of the above-mentioned gear box, the first oil passage and the fourth oil passage are parallel to the radial direction of the planetary gear.

[0017] As a kind of preferred technical scheme of the above-mentioned gear box, the planet carrier is rotatably connected with the box through a second bearing, a fifth oil passage is formed between the web plate and the box, the third oil passage is communicated with the fifth oil passage, and the oil is provided for the second bearing through the fifth oil passage.

[0018] As a kind of preferred technical scheme of the above-mentioned gear box, a chamfer is arranged on the outer circumferential side of the web plate for mounting the slip ring.

[0019] As a kind of preferred technical scheme of the above-mentioned gear box, a third oil groove is arranged on the outer circumferential side of the pin shaft, and the second oil passage is communicated with the third oil passage through the third oil groove.

[0020] The utility model has the advantages of:

[0021] The utility model provides a gear box, including box, planetary transmission subassembly and slip ring. Among them, the box is equipped with first oil circuit, planetary transmission subassembly is installed in the box, and planetary transmission subassembly includes planet carrier, pin shaft and planetary gear, and the pin shaft is fixed to the web of planet carrier, and the planetary gear is through first bearing sleeve and is set to pin shaft, and the web is equipped with second oil circuit, and the pin shaft is equipped with third oil circuit, and second oil circuit is linked together with third oil circuit, and third oil circuit provides oil liquid for planetary gear and first bearing, and the slip ring is installed in the box and is set to the outside of web, and the slip ring is equipped with fourth oil circuit, and first oil circuit is linked together with second oil circuit through fourth oil circuit.

[0022] Therefore, the user can supply oil lubrication for the planetary gear through the first oil circuit, the fourth oil circuit, the second oil circuit and the third oil circuit connected in sequence, so that the transmission efficiency is higher, and the friction work is reduced. Further, the slip ring is set on the outer circumferential side of the web, so that the overall length of the planet carrier can be shortened, and the overall length of the gear box can be shortened, the weight of the gear box is reduced, so that the gear box with lower cost and more compact structure is realized. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the description of the embodiments of the utility model will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the contents of the embodiments of the utility model and the drawings for the ordinary skilled in the art without creating labor.

[0024] Figure 1 It is the overall structure schematic diagram of the gear box provided by the embodiments of the utility model;

[0025] Figure 2 It is the partial structure schematic diagram of the gear box provided by the embodiments of the utility model Figure 1 ;

[0026] Figure 3 It is the partial structure schematic diagram of the gear box provided by the embodiments of the utility model Figure 2 ;

[0027] Figure 4 It is the partial enlarged view of A in Figure 3 ;

[0028] Figure 5 It is the partial enlarged view of B in Figure 3 .

[0029] In the drawing:

[0030] 10, box; 11, first oil circuit; 12, fifth oil circuit;

[0031] 20, web plate; 21, second oil path; 22, chamfer;

[0032] 30, pin shaft; 31, third oil path; 32, third oil groove;

[0033] 40, planetary gear;

[0034] 50, slip ring; 51, fourth oil path; 511, first oil groove; 512, first through hole; 513, second oil groove;

[0035] 60, second bearing. DETAILED DESCRIPTION

[0036] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for the convenience of description, not all the structures.

[0037] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0038] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0039] In the description of the embodiment, the terms "upper", "lower", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0040] As Figures 1 to 5 The utility model provides a gear box, including box 10, planetary transmission subassembly and slip ring 50. Wherein, box 10 is set with first oil circuit 11;Planetary transmission subassembly is installed in box 10, and planetary transmission subassembly includes planet carrier, pin shaft 30 and planetary gear 40, pin shaft 30 is fixed in the width board 20 of planet carrier, and planetary gear 40 is set in pin shaft 30 through first bearing, and the width board 20 is set with second oil circuit 21, and pin shaft 30 is set with third oil circuit 31, and second oil circuit 21 is communicated with third oil circuit 31, and third oil circuit 31 provides oil for planetary gear 40 and first bearing;Slip ring 50 is installed in box 10 and is set in the outer periphery of width board 20, and slip ring 50 is provided with fourth oil circuit 51, and first oil circuit 11 is communicated with second oil circuit 21 through fourth oil circuit 51.

[0041] Thus, the user can supply oil lubrication for planetary gear 40 through the first oil circuit 11, the fourth oil circuit 51, the second oil circuit 21 and the third oil circuit 31 in turn, so that the transmission efficiency is higher, and the friction work is reduced. Further, the slip ring 50 is set on the outer periphery of the width board 20, which can shorten the overall length of the planet carrier, and further shorten the overall length of the gear box, reduce the weight of the gear box, so as to realize a lower cost and more compact gear box structure.

[0042] Optionally, the slip ring 50 is fixed with the width board 20. For example, the slip ring 50 is connected with the width board 20 through a stud. In this way, the slip ring 50 and the width board 20 are fixed by the stud, so that the output end of the fourth oil circuit 51 is aligned with the input end of the second oil circuit 21 and remains relatively stable. In this way, the oil can relatively smoothly enter the second oil circuit 21 from the fourth oil circuit 51.

[0043] Optionally, the fourth oil circuit 51 includes a first oil groove 511 and a first through hole 512. The first oil groove 511 is annularly arranged on the outer peripheral wall of the slip ring 50 and is communicated with the first oil circuit 11. The first through hole 512 is arranged in the first oil groove 511. The oil can enter the second oil circuit 21 after sequentially passing through the first oil circuit 11, the first oil groove 511 and the first through hole 512.

[0044] Exemplarily, the outer peripheral wall of the sliding ring 50 is provided with a first oil groove 511, which is an annular groove. When the opening end face of the first oil groove 511 in the depth direction is sealingly arranged with the box body 10, the first oil groove 511 is a relatively sealed flow channel for receiving the oil discharged from the first oil way 11. The input end of the first through hole 512 is formed on the bottom wall of the first oil groove 511, and the output end of the first through hole 512 is formed on the inner peripheral wall of the sliding ring 50 and is in communication with the input end of the second oil way 21. In this way, the first oil groove 511 allows the output end of the first oil way 11 and the input end of the first through hole 512 to be misaligned, which can reduce the processing accuracy. When the web plate 20 rotates relative to the box body 10, the first oil way 11 can continuously inject oil into the first through hole 512 through the first oil groove 511.

[0045] Optionally, the sliding ring 50 is fixed with the box body 10. Exemplarily, the sliding ring 50 is connected with the box body 10 through a stud. In this way, the sliding ring 50 and the box body 10 are fixed by the stud, so that the input end of the fourth oil way 51 and the output end of the first oil way 11 are aligned and relatively stable. In this way, the oil can relatively smoothly enter the fourth oil way 51 from the first oil way 11.

[0046] Optionally, the fourth oil way 51 includes the first through hole 512 and a second oil groove 513. The second oil groove 513 is annularly arranged on the inner peripheral wall of the sliding ring 50 and is in communication with the second oil way 21. The first through hole 512 is arranged in the second oil groove 513, and the oil can enter the second oil way 21 after sequentially passing through the first through hole 512 and the second oil groove 513.

[0047] Exemplarily, the inner peripheral wall of the sliding ring 50 is provided with a second oil groove 513, which is an annular groove. When the opening end face of the second oil groove 513 in the depth direction is sealingly arranged with the box body 10, the second oil groove 513 is a relatively sealed flow channel for receiving the oil discharged from the first through hole 512. The input end of the first through hole 512 is formed on the outer peripheral wall of the sliding ring 50 and is in communication with the output end of the first oil way 11. The output end of the first through hole 512 is formed on the bottom wall of the second oil groove 513. In this way, the second oil groove 513 allows the output end of the first through hole 512 and the input end of the second oil way 21 to be misaligned, which can reduce the processing accuracy. When the web plate 20 rotates relative to the box body 10, the first oil way 11 can continuously inject oil into the second oil way 21 through the second oil groove 513.

[0048] Optionally, the fourth oil path 51 comprises a first oil groove 511, a first through hole 512 and a second oil groove 513, the first oil groove 511 is annularly arranged on the outer circumferential wall of the slip ring 50 and communicates with the first oil path 11, the second oil groove 513 is annularly arranged on the inner circumferential wall of the slip ring 50 and communicates with the second oil path 21, the first through hole 512 communicates the first oil groove 511 and the second oil groove 513, and the oil can enter the second oil path 21 in sequence through the first oil path 11, the first oil groove 511, the first through hole 512 and the second oil groove 513.

[0049] Illustratively, the outer circumferential wall of the slip ring 50 is provided with the first oil groove 511, after the opening end face of the first oil groove 511 in the depth direction is sealingly arranged with the box body 10, the first oil groove 511 forms a relatively sealed flow channel, and the oil discharged from the first oil path 11 enters the first through hole 512 through the first oil groove 511; the inner circumferential wall of the slip ring 50 is provided with the second oil groove 513, after the opening end face of the second oil groove 513 in the depth direction is sealingly arranged with the outer circumferential wall of the web plate 20, the second oil groove 513 forms a relatively sealed flow channel, and the oil discharged from the first through hole 512 can enter the second oil path 21 through the second oil groove 513. In this way, the arrangement of the first oil groove 511 and the second oil groove 513 can compensate for the problem that the first oil path 11, the second oil path 21 and the third oil path 31 are difficult to align due to the machining error or assembly error of the box body 10, the web plate 20 and the slip ring 50.

[0050] Further, the first through hole 512 is provided with a plurality of first through holes 512, and the first oil groove 511 and the second oil groove 513 can be communicated through the plurality of first through holes 512.

[0051] Optionally, the first oil path 11 and the fourth oil path 51 are parallel to the radial direction of the planetary gear 40.

[0052] In this way, the distance of the oil path is relatively short, and the machining is simple.

[0053] Optionally, the planet carrier is rotatably connected to the box body 10 through the second bearing 60, the fifth oil path 12 is formed between the web plate 20 and the box body 10, the third oil path 31 communicates with the fifth oil path 12, and the oil provides oil for the second bearing 60 through the fifth oil path 12.

[0054] Illustratively, the planet carrier is rotatably connected to the box body 10, the friction is reduced through the second bearing 60, the gap between the web plate 20 and the box body 10 forms the fifth oil path 12, the third oil path 31 comprises a first output end and a second output end, the first output end provides oil for the planetary gear 40, the second output end communicates with the fifth oil path 12 and is used to provide oil for the second bearing 60, and the lubrication of the planetary gear 40 and the lubrication of the second bearing 60 are completed at the same time.

[0055] Optionally, the outer periphery of the web plate 20 is provided with a chamfer 22 for installing the sliding ring 50.

[0056] Optionally, the outer periphery of the pin shaft 30 is provided with a third oil groove 32, and the second oil channel 21 communicates with the third oil channel 31 through the third oil groove 32.

[0057] In this way, the oil can flow through the second oil channel 21, the third oil groove 32 and then enter the third oil channel 31, so that when the pin shaft 30 is assembled with the web plate 20, it is not necessary to correct whether the output end of the second oil channel 21 and the input end of the third oil channel 31 are aligned.

[0058] In addition, the above is only the preferred embodiment of the present application and the technical principle applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A gear box, characterized in that, include: The housing (10) is provided with a first oil passage (11); A planetary transmission assembly is installed inside the housing (10). The planetary transmission assembly includes a planet carrier, a pin (30), and a planetary gear (40). The pin (30) is fixed to the web plate (20) of the planet carrier. The planetary gear (40) is sleeved on the pin (30) through a first bearing. The web plate (20) has a second oil passage (21), and the pin (30) has a third oil passage (31). The second oil passage (21) is connected to the third oil passage (31), and the third oil passage (31) provides oil to the planetary gear (40) and the first bearing. Slip ring (50), the slip ring (50) is installed inside the housing (10) and sleeved outside the panel (20), the slip ring (50) is provided with a fourth oil passage (51), the first oil passage (11) is connected to the second oil passage (21) through the fourth oil passage (51).

2. The gear case of claim 1, wherein, The slip ring (50) is fixed to the plate (20).

3. The gear case of claim 2, wherein, The fourth oil passage (51) includes a first oil groove (511) and a first through hole (512). The first oil groove (511) is arranged around the outer peripheral wall of the slip ring (50) and communicates with the first oil passage (11). The first through hole (512) is opened in the first oil groove (511). The oil can pass through the first oil passage (11), the first oil groove (511) and the first through hole (512) in sequence and then enter the second oil passage (21).

4. The gear case of claim 1, wherein, The slip ring (50) is fixed to the housing (10).

5. The gear case of claim 4, wherein, The fourth oil passage (51) includes a first through hole (512) and a second oil groove (513). The second oil groove (513) is arranged around the inner peripheral wall of the slip ring (50) and communicates with the second oil passage (21). The first through hole (512) is opened in the second oil groove (513). The oil can enter the second oil passage (21) after passing through the first through hole (512) and the second oil groove (513) in sequence.

6. The gear case of claim 1, wherein, The fourth oil passage (51) includes a first oil groove (511), a first through hole (512), and a second oil groove (513). The first oil groove (511) is arranged around the outer peripheral wall of the slip ring (50) and communicates with the first oil passage (11). The second oil groove (513) is arranged around the inner peripheral wall of the slip ring (50) and communicates with the second oil passage (21). The first through hole (512) connects the first oil groove (511) and the second oil groove (513). The oil can pass through the first oil passage (11), the first oil groove (511), the first through hole (512), and the second oil groove (513) in sequence before entering the second oil passage (21).

7. A gearbox according to any one of claims 1-6, characterized in that The first oil passage (11) and the fourth oil passage (51) are opened in parallel to the radial direction of the planetary gear (40).

8. The gear box of any one of claims 1-6, wherein, The planet carrier is rotationally connected with the box (10) through a second bearing (60), a fifth oil path (12) is formed between the web plate (20) and the box (10), the third oil path (31) communicates with the fifth oil path (12), and the oil liquid provides oil liquid for the second bearing (60) through the fifth oil path (12).

9. The gear box of any of claims 1-6, wherein, A chamfer (22) is formed on the outer periphery of the web plate (20) and used for mounting the slip ring (50).

10. The gear box of any one of claims 1-6, wherein, A third oil groove (32) is annularly arranged on the outer periphery of the pin shaft (30), and the second oil path (21) communicates with the third oil path (31) through the third oil groove (32).

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