Gearbox, gearbox oil supply system and wind power generation equipment

Abstract

The utility model relates to the technical field of mechanical transmission, and provides a gearbox, a gearbox oil supply system and wind power generation equipment. The gear box comprises a built-in oil pump and an oil storage area located at the bottom, and further comprises a protruding part which is arranged in the gear box and connected with the inner side wall and / or the inner bottom wall of a shell of the gear box, and the protruding part and the shell form an integrated structure. The oil suction channel is formed in the protruding part and communicates with an oil suction opening of the oil pump and the oil storage area, and the oil suction channel and the bottom wall of the oil storage area are spaced. The oil absorption channel and the shell of the gear box are of an integrated structure, the overall structure of the gear box is simplified, the manufacturing cost of the gear box is reduced, and stable arrangement of the oil absorption channel is achieved; in the operation process of the gearbox, the oil pump sucks oil from the oil storage area through the oil suction channel, and the lubrication and transmission performance of all transmission parts in the gearbox is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical transmission technical field, concretely relates to gear box, gear box oil supply system and wind power equipment. BACKGROUND

[0002] Gear box is an important component in mechanical transmission system. In order to realize effective transmission, oil pump is usually arranged in gear box, and oil pump sucks oil from the bottom of gear box during the operation of gear box and sends to each transmission component of gear box for lubrication.

[0003] The current scheme is that a special oil suction pipe is equipped for gear box to connect oil pump and oil storage area at the bottom of gear box, which leads to complex overall structure of gear box and high manufacturing cost.

[0004] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the utility model, so it can include the information that does not constitute the prior art known to those skilled in the art. UTILITY MODEL CONTENT

[0005] Therefore, the utility model provides gear box, gear box oil supply system and wind power equipment, forms integral structure of oil suction channel and the shell of gear box, simplifies the overall structure and manufacturing cost of gear box, and realizes the stable arrangement of oil suction channel.

[0006] According to one aspect of the utility model, a kind of gear box is provided, including built-in oil pump and located bottom, still include: protruding portion, it is set in the gear box, with the inner side wall or inner bottom wall of the shell of the gear box is connected, and with the shell is formed integral structure;Oil suction channel is formed in the protruding portion, and the oil suction port of the oil pump and the oil storage area are communicated, and the oil suction channel and the bottom wall of the oil storage area are spaced apart.

[0007] In some embodiments, the protruding portion is formed as a convex rib structure extending in the vertical direction, and the oil suction channel penetrates the protruding portion in the vertical direction.

[0008] In some embodiments, the bottom wall of the oil storage area includes a through hole, the through hole is sealed by a sealing member, and the through hole and the oil suction channel are oppositely positioned in the vertical direction.

[0009] In some embodiments, the oil pump is located at least partially above the oil level of the oil storage area.

[0010] According to another aspect of the utility model, provide a kind of gear box oil supply system, including gear box with oil inlet pipe and the external oil circuit system of gear box, the external oil circuit system connects the oil inlet pipe, wherein: the structure of the gear box is as described in any of the above embodiments, the oil outlet of the oil pump is connected with the external oil circuit system;The gear box oil supply system further includes oil tank, emergency valve and emergency oil channel, the oil tank is integrated in the external oil circuit system, and is connected between the external oil circuit system and the oil inlet pipe, the emergency valve is connected between the oil tank and the emergency oil channel, the emergency oil channel extends into the gear box, and is connected to the target lubrication area of the gear box.

[0011] In some embodiments, the gear box is provided with internal oil channels leading from the oil inlet pipe to each lubrication area, and the gear box oil supply system has a first oil supply state and a second oil supply state; in the first oil supply state, the oil pump pumps oil from the oil storage area through the oil suction channel into the oil tank of the external oil circuit system, and the oil in the oil tank is delivered to each lubrication area of the gear box through the oil inlet pipe and the internal oil channels; in the second oil supply state, the oil in the oil tank is delivered to the target lubrication area of the gear box at least through the emergency valve and the emergency oil channel.

[0012] In some embodiments, the internal oil channels include vertical oil channels leading to the target lubrication area; the emergency valve is arranged at the bottom of the oil tank, and the emergency oil channel extends horizontally or obliquely downward to communicate with the vertical oil channels.

[0013] In some embodiments, the emergency oil channel is independent of the internal oil channels; the emergency valve is arranged at the bottom of the oil tank, and the emergency oil channel includes a horizontal or obliquely downward extending oil guiding section and a vertical or obliquely downward extending lubricating section leading to the target lubrication area.

[0014] In some embodiments, a check valve is arranged between the external oil circuit system and the oil tank.

[0015] According to another aspect of the utility model, a wind power generation equipment is provided, which is configured with the gear box oil supply system as described in any of the above embodiments.

[0016] The utility model has at least the following beneficial effects compared with the prior art:

[0017] The utility model discloses an integral structure of oil suction channel and the casing of gear box, simplify the overall structure and manufacturing cost of gear box, and realize the stable arrangement of oil suction channel. Specifically, the convex part of integral structure with casing is arranged in the gear box, and the stable connection between the convex part and casing is formed. The convex part can be connected with the inner side wall and / or inner bottom wall of casing, and the specific assembly position of oil pump in the casing is determined. The oil suction channel is formed in the convex part, and the oil suction port and oil storage area of oil pump are communicated, and the oil pump sucks oil from the oil storage area through the oil suction channel in the operation process of gear box, and the lubrication and transmission performance of each transmission component in the gear box are ensured. The oil suction channel and the bottom wall of oil storage area are spaced apart by a proper distance to ensure smooth oil suction, and need to ensure immersion in oil under most working conditions.

[0018] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings incorporated by reference in the specification and constitute a part of the specification, show the embodiments consistent with the utility model, and are used together with the specification to explain the principle of the utility model. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0020] Figure 1 The partial internal structure schematic diagram of the gear box in the embodiment of the utility model is shown;

[0021] Figure 2 The partial sectional structure schematic diagram of the gear box in the embodiment of the utility model is shown;

[0022] Figure 3 The overall structure schematic diagram of the oil supply system of the gear box in the embodiment of the utility model is shown;

[0023] Figure 4 The oil circuit structure schematic diagram of the oil supply system of the gear box in the embodiment of the utility model is shown. DETAILED DESCRIPTION

[0024] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein. Rather, these implementations are provided as example (s) so that this disclosure will be thorough and complete, and will fully convey the scope of example implementations to those skilled in the art.

[0025] The accompanying drawings are merely illustrative and are not necessarily drawn to scale. Like reference numerals in the drawings denote like elements, and thus the descriptions thereof will not be repeated.

[0026] The terms "first", "second", and similar terms used in the description are not intended to denote any order, quantity, or importance, but are only used to distinguish different components. In addition, in the description of the present application, unless otherwise specified and limited, the term "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication of two elements.

[0027] It should be noted that the features of the embodiments of the present application and different embodiments can be combined with each other without conflict.

[0028] Figure 1 schematic partial internal structure of the gear box, Figure 2 schematic partial cross-sectional structure of the gear box, Figure 1 and Figure 2 The gear box 100 provided by the embodiments of the present application comprises:

[0029] The oil storage area 110 is arranged at the bottom of the gear box 100.

[0030] The oil pump 120 is built in the gear box 100.

[0031] The protruding part 130 is built in the gear box 100, connected with the inner side wall and / or inner bottom wall of the shell 140 of the gear box 100, and formed in an integral structure with the shell 140.

[0032] The oil suction channel 150 is formed in the protruding part 130, communicates the oil suction port of the oil pump 120 and the oil storage area 110, and is spaced apart from the bottom wall of the oil storage area 110.

[0033] The oil storage area 110 can be an independent oil groove or oil pool structure arranged at the bottom of the gear box 100, or can refer to the area of the bottom of the gear box 100 containing oil. The oil storage area 110 is used to collect the backflow of lubricating oil, and provides sufficient oil for the lubrication of the transmission components in the gear box 100. Wherein, the bottom is based on the state of the gear box 100 after installation and put into use. The oil pump 120 can be a mechanical pump or an electric pump. In the embodiments of the present application, the oil pump 120 mainly refers to a mechanical pump.

[0034] The protruding portion 130 is arranged in the gear box 100 and is formed in an integral structure with the housing 140 to achieve a stable connection. The protruding portion 130 can be cast on the housing 140 or formed by other suitable manners, and the protruding portion 130 and the housing 140 can also be integrally cast or formed by other suitable manners. The protruding portion 130 can be connected with the inner side wall and / or the inner bottom wall of the housing 140, depending on the assembly position of the oil pump 120 in the housing 140. In one specific implementation, the protruding portion 130 is integrally cast on the inner side wall of the housing 140, which can achieve the most stable connection between the protruding portion 130 and the housing 140, minimize the occupied space of the protruding portion 130, and simplify the manufacturing process.

[0035] The oil suction channel 150 is formed in the protruding portion 130 and communicates the oil suction port of the oil pump 120 and the oil storage area 110. During the operation of the gear box 100, the oil pump 120 can suck oil from the oil storage area 110 through the oil suction channel 150 to ensure the lubrication and transmission performance of the transmission components in the gear box 100. The oil suction channel 150 is spaced apart from the bottom wall of the oil storage area 110 by a suitable distance to ensure smooth oil suction, and it is necessary to ensure that the bottom of the oil suction channel 150 is immersed in oil under most working conditions. Most working conditions refer to conditions in which the oil level in the oil storage area 110 is within the normal range, except for extreme conditions such as extremely low oil level in the gear box 100 causing the oil level in the oil storage area 110 to be too low. Under most working conditions, the bottom of the oil suction channel 150 is always in contact with oil, so that the oil pump 120 can suck oil from the oil storage area 110 through the oil suction channel 150 to ensure the lubrication and transmission performance of the transmission components in the gear box 100.

[0036] The utility model discloses a gear box 100 and the housing 140 of oil suction channel 150 are formed in an integral structure, which simplifies the overall structure and manufacturing cost of the gear box 100 and realizes the stable arrangement of the oil suction channel 150.

[0037] In some embodiments, the protruding portion 130 is formed as a vertical protruding rib structure, and the oil suction channel 150 extends through the protruding portion 130 in the vertical direction. The vertical direction is based on the state of the gear box 100 after installation and use, and the vertical direction does not strictly require being perpendicular to the ground. In some cases, due to the limitation of the internal space of the gear box 100, the protruding portion 130 and the oil suction channel 150 can extend in the vertical direction, as long as the oil pump 120 can smoothly suck oil from the oil storage area 110 through the oil suction channel 150. The protruding portion 130 is formed as a protruding rib structure, which can also enhance the structural strength of the protruding portion 130 and the housing 140, and improve the stability of the oil suction channel 150.

[0038] In some embodiments, the bottom wall of the oil storage area 110 includes a through hole 155, which is sealed by a sealing member 160 and vertically opposite to the oil suction passage 150. The through hole 155 can be a drilled hole of the oil suction passage 150. Specifically, a feasible implementation of forming the oil suction passage 150 is to cast the protrusion 130 on the housing 140, drill the through hole 155 from the bottom of the housing 140, and further drill the oil suction passage 150 to the oil suction port of the oil pump 120. That is, the through hole 155 is formed in the bottom wall of the oil storage area 110 as a process requirement when the oil suction passage 150 is processed in the protrusion 130. Further, from the perspective of functional reuse, in some cases, the through hole 155 can also be used as an oil change port of the oil storage area 110. In the normal working state of the gear box 100, the sealing member 160 seals the through hole 155 to ensure oil tightness.

[0039] In some embodiments, in the static state of the gear box 100, the oil pump 120 is at least partially above the oil level of the oil storage area 110, for example, the oil outlet of the oil pump 120 is above the oil level of the oil storage area 110, so as to facilitate the oil pump 120 to deliver oil to the external oil circuit system, and facilitate the pump replacement operation without emptying the oil in the oil storage area 110. In the static state of the gear box 100, the oil suction port of the oil pump 120 can be below the oil level of the oil storage area 110 to ensure stable suction of oil and avoid dry friction between the transmission components when the gear box 100 starts.

[0040] The utility model embodiment further provides a gear box oil supply system, Figure 3 The overall structure of the gear box oil supply system is shown, Figure 4 The oil circuit structure of the gear box oil supply system is shown, and Figures 1 to 4 The gear box oil supply system provided by the utility model embodiment includes:

[0041] The gear box 100 with the oil inlet pipe 100a, and the structure of the gear box 100 is as described in any of the above embodiments;

[0042] The external oil circuit system 200 is externally arranged on the gear box 100, and the oil pump 120 of the gear box 100 is connected to the oil inlet pipe 100a of the gear box 100 through the external oil circuit system 200;

[0043] The oil storage tank 210, the emergency valve 220 and the emergency oil passage 230, the oil storage tank 210 is integrated in the external oil circuit system 200 and connected between the external oil circuit system 200 and the oil inlet pipe 100a, the emergency valve 220 is connected between the oil storage tank 210 and the emergency oil passage 230, and the emergency oil passage 230 extends into the gear box 100 and leads to the target lubrication area 170' of the gear box 100.

[0044] The oil tank 210 is integrated in the external oil circuit system 200, which means that the pipeline between the oil tank 210 and the external oil circuit system 200 is integrated. Specifically, the pipeline of the external oil circuit system 200 is used to connect the oil tank 210 to the oil pump 120 and the oil inlet pipe 100a, and the oil tank 210 participates in the oil supply circulation of the gear box oil supply system. On this basis, the oil tank 210 is additionally provided with an emergency valve 220 and an emergency oil passage 230 for oil supply in emergency working conditions. From the structural design, if the external oil circuit system 200 is packaged in a box, the oil tank can be integrated in the box or independent of the box.

[0045] The internal oil passage 180 is provided in the gear box 100 and leads to each lubrication area 170 from the oil inlet pipe 100a. In the first oil supply state (normal working condition, at this time the gear box 100 can work normally), the oil pump 120 sucks oil from the oil storage area 110 through the oil suction channel 150 and delivers it to the oil tank 210 of the external oil circuit system 200. The oil in the oil tank 210 is delivered to each lubrication area 170 of the gear box 100 through the conventional outlet 210a, the oil inlet pipe 100a and the internal oil passage 180 of the gear box 100. In the first oil supply state, the oil tank 210 participates in the oil supply circulation of the gear box oil supply system based on the pipeline integration design between the oil tank 210 and the external oil circuit system 200. The oil inlet pipe 100a can be connected to each branch of the internal oil passage 180 through a plurality of oil distribution interfaces; according to the design needs, one or more oil distribution manifolds 100a' can also be provided to realize the effective layout of the internal oil passage 180. Each lubrication area 170 can be set as needed, for example, including each transmission component of the gear box 100. The external oil circuit system 200 can be provided with cooling components, filtering components, pressure regulating components, etc. to realize the cooling, filtering, pressure regulating, etc. of the oil.

[0046] In the second oil supply state (emergency working condition), the oil in the oil tank 210 is delivered to the target lubrication area 170' of the gear box at least through the emergency valve 220 and the emergency oil passage 230. Specifically, for example, in the power failure condition, the gear box 100 cannot be started, which causes the oil pump 120 to fail to work and thus fail to realize lubrication, for example, in the extreme oil shortage condition of the oil storage area 110, the oil pump 120 cannot suck oil to realize lubrication, etc. in emergency working conditions: the emergency valve 220 can be opened (controlled by electrical signals or other related signals), so that the oil in the oil tank 210 is delivered to the target lubrication area 170' at least through the emergency valve 220 and the emergency oil passage 230. The target lubrication area 170' includes the key transmission components of the gear box 100, such as the planetary gear train, etc., so that the gear box 100 meets the basic lubrication requirements for operation and thus realizes effective transmission.

[0047] The utility model discloses an integrated setting oil storage tank 210 in external oil circuit system 200, connect between external oil circuit system 200 and oil inlet pipe 100a, participate in the oil supply circulation of gear box oil supply system, can store the oil liquid that oil pump 120 is extracted from oil storage area 110 in the normal working process of gear box 100, and then realize the effective lubrication of key transmission component in gear box 100 in emergency working condition using the oil liquid stored in oil storage tank 210, make gear box 100 still can normally operate under the power failure, extremely low oil level etc. extreme working condition. In addition, through the pipeline integrated design of oil storage tank 210 participating in the oil supply circulation of gear box oil supply system, the oil level 110' of gear box 100 is regulated using the partial oil liquid storage of oil storage tank 210, avoid the viscous resistance that transmission component is completely immersed in oil liquid, significantly reduce the oil liquid agitation loss caused by the transmission component operation in gear box 100, improve the transmission efficiency of gear box 100.

[0048] Wherein, the specific structure of internal oil passage 180 and external oil circuit system 200 can be designed according to the need, can adopt the existing design, the utility model does not make the limitation to this. That is to say, the utility model does not need to change the original structure of internal oil passage 180 and external oil circuit system 200, only need to add oil storage tank 210, emergency valve 220 and emergency oil passage 230, cooperate the design of oil pump 120 and oil storage area 110 through oil suction passage 150, realize the lubrication oil supply of each transmission component of gear box 100 under normal working condition and the lubrication oil supply of key transmission component of gear box 100 under emergency working condition, and effectively reduce the oil stirring loss, improve transmission efficiency.

[0049] In some embodiments, the emergency lubrication oil passage and the conventional lubrication oil passage in the gear box 100 are multiplexed to simplify the oil circuit design inside the gear box 100 and reduce costs. Specifically, referring to the design shown in Figure 4 The internal oil passage 180 includes a vertical oil passage 180' leading to the target lubrication area 170', the emergency valve 220 is arranged at the bottom of the oil storage tank 210, and the emergency oil passage 230 extends horizontally or obliquely downward to communicate with the vertical oil passage 180'. The vertical oil passage 180' can be used as a conventional lubrication oil passage under normal working conditions and as an emergency lubrication oil passage under emergency working conditions. Under emergency working conditions, the oil in the oil storage tank 210 can be delivered to the target lubrication area 170' through the emergency oil passage 230 and the vertical oil passage 180' under the action of gravity after the emergency valve 220 is opened, realizing the lubrication of the key transmission components in the gear box 100.

[0050] In some embodiments, the emergency oil passage 230 can be independent of the internal oil passage 180. Specifically, the emergency valve 220 is arranged at the bottom of the oil storage tank 210, and the emergency oil passage 230 can include an oil guiding section extending horizontally or obliquely downward, and a lubricating section extending vertically or obliquely downward to lead to the target lubricating area 170'. In an emergency working condition, after the emergency valve 220 is opened, the oil in the oil storage tank 210 can be delivered to the target lubricating area 170' through the oil guiding section and the lubricating section of the emergency oil passage 230 under the action of gravity, so as to realize lubrication of the key transmission components in the gear box 100.

[0051] In some embodiments, a check valve 260 is arranged between the external oil passage system 200 and the oil storage tank 210. Through the check valve 260, backflow of oil into the external oil passage system 200 in an emergency working condition is avoided, and it is ensured that the oil in the oil storage tank 210 flows out through the emergency valve 220, so as to realize lubrication in an emergency working condition.

[0052] The utility model embodiment further provides a wind power generation equipment, the wind power generation equipment is provided with the gear box oil supply system of any embodiment described above, through the integrated setting of the oil storage tank 210 in the external oil passage system 200, make the oil storage tank 210 connect between the external oil passage system 200 and the oil inlet pipe 100a, participate in the oil supply circulation of the gear box oil supply system, realize the part oil liquid that the oil pump 120 of oil storage tank 210 extracts from the oil storage area 110 in the conventional working condition as emergency lubrication reserve, and reduce the oil liquid agitation loss caused by the operation of the transmission components in the gear box 100, in the emergency working condition, the oil storage tank 210 is directly communicated with the target lubricating area 170' through the emergency valve 220 and the emergency lubricating oil passage, realizes the effective lubrication of the key transmission components in the gear box 100, makes the gear box 100 still be able to operate normally in the power failure, extremely low oil level and other extreme working conditions, and further, the wind power generation equipment can operate and generate electricity, and the power generation efficiency of the wind power generation equipment is improved.

[0053] The above is a further detailed description of the utility model in combination with specific preferred embodiments, and the specific implementation of the utility model cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all of them should be regarded as falling within the protection scope of the utility model.

Claims

1. A gear box comprising an in-built oil pump and an oil reservoir at the bottom, characterized in that, Also included are: a protrusion built in the gear box, connected with the inner side wall and / or inner bottom wall of the housing of the gear box, and formed in an integrated structure with the housing; an oil suction channel formed in the protrusion, connecting the oil suction port of the oil pump and the oil storage area, and spaced apart from the bottom wall of the oil storage area.

2. The gear box of claim 1, wherein, The protrusion is formed as a vertical protruding rib structure, and the oil suction channel penetrates the protrusion in the vertical direction.

3. The gear box of claim 2, wherein, The bottom wall of the oil storage area includes a through hole sealed by a sealing member, and the through hole is vertically opposite to the oil suction channel.

4. The gear box of claim 1, wherein, The oil pump is located at least partially above the oil level of the oil storage area.

5. A gear box oil supply system, comprising a gear box with an oil inlet pipe and an external oil circuit system externally arranged on the gear box, the external oil circuit system being connected to the oil inlet pipe, characterized in that: the structure of the gear box is as described in any one of claims 1-4, the oil outlet of the oil pump is connected to the external oil circuit system; the gear box oil supply system further comprises an oil storage tank, an emergency valve and an emergency oil channel, the oil storage tank is integrated in the external oil circuit system and connected between the external oil circuit system and the oil inlet pipe, the emergency valve is connected between the oil storage tank and the emergency oil channel, and the emergency oil channel extends into the gear box and leads to a target lubrication area of the gear box.

6. The gear box oil supply system of claim 5, wherein The gear box is provided with internal oil channels leading from the oil inlet pipe to each lubrication area, and the gear box oil supply system has a first oil supply state and a second oil supply state; in the first oil supply state, the oil pump sucks oil from the oil storage area through the oil suction channel and delivers it to the oil storage tank of the external oil circuit system, and the oil in the oil storage tank is delivered to each lubrication area of the gear box through the oil inlet pipe and the internal oil channels; in the second oil supply state, the oil in the oil storage tank is delivered to the target lubrication area of the gear box at least through the emergency valve and the emergency oil channel.

7. The gear box oil supply system of claim 6, wherein The internal oil channels include vertical oil channels leading to the target lubrication area; The emergency valve is arranged at the bottom of the oil storage tank, and the emergency oil channel extends horizontally or obliquely downward to communicate with the vertical oil channels.

8. The gear box oil supply system of claim 6, wherein The emergency oil channel is independent of the internal oil channels; The emergency valve is arranged at the bottom of the oil storage tank, and the emergency oil channel includes a horizontal or obliquely downward extending oil guiding section, and a lubricating section vertically or obliquely downward extending to lead to the target lubrication area.

9. The gear box oil supply system of claim 5, wherein A check valve is arranged between the external oil circuit system and the oil storage tank.

10. A wind power plant, characterized in that The wind power generation device is configured with the gear box oil supply system as described in any one of claims 5-9.

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