Oil guide parts, gearbox housing and gearbox

Abstract

The present application discloses an oil guide member, a gearbox housing and a gearbox, and relates to the technical field of gear transmission equipment. The gearbox of the present application includes a gearbox housing, an oil guide member and a gear; the oil guide member is arranged in the gearbox housing, and the oil guide member includes an oil guide housing body, the oil guide housing body has a groove for the gear to extend into, and the oil guide housing body is provided with at least one oil guide hole communicating with the groove, the gear is arranged in the gearbox housing, and a part of the gear extends into the groove. Therefore, the present application can divide the gearbox housing into a gear oil stirring pool and a cooling oil supply pool through the oil guide member, and connect the gear oil stirring pool and the cooling oil supply pool through the oil guide hole, so as to stably supply oil to the gear, reduce oil stirring loss, and control the overall temperature rise of the gearbox.

Description

Technical Field

[0001] The present application relates to the technical field of gear transmission equipment, and in particular to an oil guide member, a gear box housing and a gear box. Background Art

[0002] Splash lubrication is generally used in gearboxes, especially rail transit gearboxes. Splash lubrication is to stir up the lubricating oil at the bottom of the gearbox through the rotation of the gears, so as to lubricate the gears and bearings inside the gearbox. As the linear speed of the gear increases, the gear oil stirring intensifies, and the oil stirring loss increases with the increase of the linear speed of the gear. In addition, the intensified gear oil stirring will cause the temperature of the lubricating oil and bearings to rise, causing the overall temperature of the gearbox to rise. Summary of the invention

[0003] The purpose of the present application is to provide an oil guide part, a gear box shell and a gear box, which can divide the gear box shell into a gear oil stirring oil pool and a cooling oil supply oil pool through the oil guide part, and connect the gear oil stirring oil pool and the cooling oil supply oil pool through an oil guide hole, so as to stably supply oil to the gear, reduce oil stirring loss, and control the overall temperature rise of the gear box.

[0004] The embodiment of the present application is implemented as follows:

[0005] An oil guide member comprises an oil guide housing body, a groove and at least one oil guide hole, wherein a first connecting portion for fixing the oil guide housing body and a first limiting portion for limiting the movement of the oil guide housing body are provided on the oil guide housing body; the groove is provided on the oil guide housing body; the oil guide hole is provided on the oil guide housing body and communicates with the groove.

[0006] In one embodiment, the oil guide housing body includes a first plate, a second plate and a third plate, the second plate is spaced apart from the first plate; the third plate is connected to the first plate and the second plate respectively; wherein the first plate, the second plate and the third plate form the groove.

[0007] In one embodiment, the channel is arc-shaped, and has a first end and a second end that penetrate the oil guide housing body, and a curved section between the first end and the second end.

[0008] In one embodiment, the first connecting portion includes a first connecting fulcrum, a second connecting fulcrum and a third connecting fulcrum, the first connecting fulcrum is arranged at the first end, the second connecting fulcrum is arranged at the second end, and the third connecting fulcrum is arranged at the bending section.

[0009] In one embodiment, the first connecting fulcrum includes a first connecting boss and a second connecting boss, the first connecting boss is arranged on the first plate, a first connecting hole is provided on the first connecting boss, the second connecting boss is arranged on the second plate, and a second connecting hole is provided on the second connecting boss.

[0010] In one embodiment, the second connection fulcrum comprises a connection plate, one end of the connection plate is connected to the third plate, and the other end is suspended, and a third connection hole is provided on the connection plate.

[0011] In one embodiment, the third connection fulcrum includes a third connection boss, the third connection boss is disposed on the third plate, and a fourth connection hole is disposed on the third connection boss.

[0012] In one embodiment, the first connection hole, the second connection hole, the third connection hole and the fourth connection hole are all used to pass fasteners, which may be accessories such as screws or bolts.

[0013] In one embodiment, the first position-limiting portion includes a first position-limiting fulcrum and a second position-limiting fulcrum, the first position-limiting fulcrum is disposed at the first end, and the second position-limiting fulcrum is disposed at the curved section.

[0014] In one embodiment, the first limiting fulcrum includes a third limiting boss, and the third limiting boss is disposed on the third plate.

[0015] In one embodiment, the second limiting fulcrum includes a first limiting boss and a second limiting boss, wherein the first limiting boss is disposed on the first plate, and the second limiting boss is disposed on the second plate.

[0016] In one embodiment, grooves are provided on both the first limiting boss and the second limiting boss.

[0017] A gear box shell is used for installation and use in conjunction with the above-mentioned oil guide member, the gear box shell comprises a box shell body, the box shell body is provided with a second connecting portion corresponding to the first connecting portion and a second limiting portion corresponding to the first limiting portion.

[0018] In one embodiment, the box shell body includes a first box shell and a second box shell connected to each other, and the second connecting portion and the second limiting portion are both arranged on the second box shell.

[0019] In one embodiment, the second connection portion includes a mounting hole, and the mounting hole is provided on the second housing and is used for passing a fastener.

[0020] In one embodiment, the second limiting portion includes a limiting block, which is disposed on the inner surface of the second housing and is used to abut against the first limiting portion.

[0021] A gearbox includes a gearbox shell, an oil guide member and a gear, wherein the gearbox shell is the above-mentioned gearbox shell; the oil guide member is the above-mentioned oil guide member and is arranged in the gearbox shell; the gear is arranged in the gearbox shell, and a partial area of ​​the gear extends into the groove.

[0022] The beneficial effect of the present application compared with the prior art is that the present application divides the gear box shell into a gear oil stirring oil pool and a cooling oil supply oil pool through an oil guide part. As the linear speed of the oil stirring gear continues to increase, at the same oil level, the gap between the gear oil stirring oil pool separated by the oil guide part and the gear is smaller, thereby reducing the oil stirring loss.

[0023] At the same time, since the oil guide part is provided with an oil guide hole, when the gear rotates at high speed, the lubricating oil level in the gear oil stirring pool will continue to drop, and the cooling oil supply pool replenishes the lubricating oil to the gear oil stirring pool through the oil guide hole, thereby ensuring the minimum oil level under the current high-speed operation. Therefore, the present application can control the oil level height of the gear oil stirring pool by adopting an isolation oil pool space, thereby providing stable oil supply to the gear.

[0024] Furthermore, since the gear oil stirring pool and the cooling oil supply pool are distinguished, the bubbles generated by the gear stirring of the lubricating oil can be precipitated in the cooling oil supply pool, thereby improving the performance of the lubricating oil; and the temperature of the lubricating oil increased by the gear stirring can be cooled in the cooling oil supply pool, thereby controlling the overall temperature rise of the gear box. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A cross-sectional view of a gearbox according to an embodiment of the present application;

[0027] Figure 2 This is an exploded schematic diagram of a partial structure of a gearbox according to an embodiment of the present application;

[0028] Figure 3 This is an exploded schematic diagram of a partial structure of a gearbox according to an embodiment of the present application;

[0029] Figure 4 This is an exploded schematic diagram of an oil guide member and a second housing according to an embodiment of the present application;

[0030] Figure 5 This is an exploded schematic diagram of an oil guide member and a second housing according to an embodiment of the present application;

[0031] Figure 6 This is an exploded schematic diagram of an oil guide member and a second housing according to an embodiment of the present application;

[0032] Figure 7 A cross-sectional view of an oil guide member and a second tank shell shown in an embodiment of the present application;

[0033] Figure 8 For this application Figure 1 A magnified view of part A;

[0034] Fig. 9 For this application Figure 1 A magnified view of part B;

[0035] Fig.10 For this application Figure 1 Enlarged view of part C.

[0036] Icons: 100-gearbox; 1-gear; 100a-gear stirring oil pool; 100b-cooling oil supply pool; 2-oil guide; 20-oil guide housing body; 201-first plate; 202-second plate; 203-third plate; 21-groove; 21a-first end; 21b-second end; 21c-bend section; 22-oil guide hole; 23-first connecting part; 231-first connecting fulcrum; 2311-first connecting boss; 2311a-first connecting hole; 2312-second connecting boss; 2312a-second connecting hole; 232-second connecting fulcrum; 2321-connecting plate; 2321a-third connecting hole; 233-third connecting fulcrum; 2331-third connecting boss; 2331a-fourth connecting hole; 24-fastener; 24a-bolt; 24b-gasket; 241- First fastener; 242 - second fastener; 243 - third fastener; 244 - fourth fastener; 25 - first limiting portion; 251 - first limiting fulcrum; 2511 - third limiting boss; 252 - second limiting fulcrum; 2521 - first limiting boss; 2522 - second limiting boss; 26 - projection; 27 - support plate; 271 - oil guide groove; 3 - gearbox shell; 30 - shell body; 31 - second connecting portion; 311a - first mounting hole; 312a - second mounting hole; 313a - third mounting hole; 314a - fourth mounting hole; 315 - nut; 32 - second limiting portion; 321 - first limiting block; 322 - second limiting block; 323 - third limiting block; 301 - first shell; 3011 - first groove; 302 - second shell; 3021 - second groove. DETAILED DESCRIPTION

[0037] The terms “first”, “second”, “third”, etc. are only used for distinguishing descriptions and do not indicate the order of arrangement, nor can they be understood as indicating or implying relative importance.

[0038] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0039] In the description of the present application, it should be noted that the terms "inside", "outside", "left", "right", "up", "down", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the products of the present application are usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0040] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0041] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings.

[0042] Please refer to Figure 1 , which is a cross-sectional view of a gearbox 100 shown in an embodiment of the present application. The gearbox 100 includes a gearbox housing 3, an oil guide member 2 and a gear 1, wherein the oil guide member 2 includes an oil guide housing body 20, and the oil guide housing body 20 has a groove 21 for the gear 1 to extend into. The oil guide member 2 is fixedly arranged in the gearbox housing 3, and divides the gearbox housing 3 into a gear oil stirring pool 100a and a cooling oil supply pool 100b, wherein the groove 21 is included in the gear oil stirring pool 100a. The oil guide housing body 20 is provided with at least one oil guide hole 22, and the oil guide hole 22 connects the gear oil stirring pool 100a and the cooling oil supply pool 100b. The gear 1 is arranged in the gearbox housing 3, and a part of the area of ​​the gear 1 extends into the groove 21. In this embodiment, the gear 1 may include a pair of large gears and small gears meshing with each other, and a part of the structure of the large gear extends into the groove 21. The housing body 30 includes a first housing 301 and a second housing 302 connected to each other by flanges, bolts and other components (see Figure 3 ).

[0043] In the embodiment, the oil guide hole 22 is arranged at a position where the horizontal height of the oil guide member 2 is relatively low. In this embodiment, the oil guide hole 22 is arranged at the lowest point of the oil guide member 2, which is beneficial for the lubricating oil in the cooling oil supply pool 100b to flow through the oil guide hole 22 to the gear stirring oil pool 100a.

[0044] In this embodiment, the gear box housing 3 is divided into a gear oil stirring pool 100a and a cooling oil supply pool 100b by the oil guide member 2. As the linear speed of the gear 1 continues to increase, at the same oil level, the gap between the gear oil stirring pool 100a separated by the oil guide member 2 and the gear 1 is smaller, thereby reducing the oil stirring loss.

[0045] At the same time, since the oil guide member 2 is provided with an oil guide hole 22, when the gear 1 rotates at a high speed, the lubricating oil level of the gear oil stirring pool 100a will continue to drop, and the cooling oil supply pool 100b replenishes the lubricating oil for the gear oil stirring pool 100a through the oil guide hole 22, that is, to ensure the minimum oil level under the current high-speed operation. Therefore, this embodiment can control the oil level height of the gear oil stirring pool 100a by adopting an isolation oil pool space, so as to stably supply oil to the gear 1.

[0046] Furthermore, during an operation, when the gear 1 rotates, the gear 1 stirs the lubricating oil in the gear oil stirring pool 100a, and the lubricating oil is thrown out along the groove 21 and flows into the cooling oil supply pool 100b along the inner wall of the gear box housing 3. Since the gear oil stirring pool 100a and the cooling oil supply pool 100b are distinguished, the bubbles generated by the stirring of the gear 1 can be precipitated in the cooling oil supply pool 100b, thereby improving the performance of the lubricating oil; and the temperature of the lubricating oil increased by the stirring of the gear 1 can be cooled in the cooling oil supply pool 100b, thereby controlling the overall temperature rise of the gear box 100.

[0047] Please refer to Figure 2 , which is an exploded schematic diagram of a partial structure of a gearbox 100 shown in an embodiment of the present application. The oil guide housing body 20 is provided with a first connecting portion 23 for fixing the oil guide housing body 20 and a first limiting portion 25 for limiting the movement of the oil guide housing body 20. The gearbox housing 3 includes a housing body 30, and the housing body 30 is provided with a second connecting portion 31 corresponding to the first connecting portion 23 and a second limiting portion 32 corresponding to the first limiting portion 25 (please refer to Figure 3 ).

[0048] The first connection part 23 and the second connection part 31 are used to fix the oil guide housing body 20 on the gear box housing 3, and the first limit part 25 and the second limit part 32 are used to limit the movement of the oil guide housing body 20. The connection between the first connection part 23 and the second connection part 31 can be a pin connection, a bolt connection, a welding, etc. The matching between the first limit part 25 and the second limit part 32 can be a matching between a protrusion and a groove, a matching between a buckle and a groove, between stop blocks, between positioning surfaces, etc.

[0049] In this embodiment, the second connecting portion 31 and the second limiting portion 32 are both provided on the second housing 302, which is convenient for installing the oil guide member 2 on the second housing 302. The oil guide member 2 is integrally cast from metal, so that it can resist the erosion of lubricating oil.

[0050] Please refer to Figure 3 , which is an exploded schematic diagram of a partial structure of a gearbox 100 shown in an embodiment of the present application. The groove 21 of the oil guide housing body 20 is arc-shaped, enveloping a quarter or more of the gear 1. The inner cavity of the second housing 302 envelops the entire or part of the oil guide member 2. In one embodiment, the groove 21 of the oil guide housing body 20 envelops a half of the gear 1.

[0051] This embodiment can accurately and effectively control the gap between the inner wall of the groove 21 of the oil guide housing body 20 and the gear 1 by designing the size of the oil guide housing body 20 and the assembly positioning of the oil guide housing body 20 and the second housing 302. In the embodiment, the end surface gap between the oil guide housing body 20 and the gear 1 is 1mm-6mm, and the tooth top gap between the oil guide housing body 20 and the gear 1 is 1mm-10mm.

[0052] Please refer to Figure 4 , which is an exploded schematic diagram of the oil guide member 2 and the second box shell 302 shown in an embodiment of the present application. The oil guide shell body 20 includes a first plate 201, a second plate 202 and a third plate 203, wherein the second plate 202 is spaced apart from the first plate 201; the third plate 203 is connected to the first plate 201 and the second plate 202 respectively; wherein the first plate 201, the second plate 202 and the third plate 203 form a groove 21. wherein the first plate 201, the second plate 202 and the third plate 203 can all be arc-shaped plates. The oil guide shell body 20 has a simple structure and is easy to process and manufacture.

[0053] The channel 21 has a first end 21 a and a second end 21 b penetrating the oil guide housing body 20 , and a bent section 21 c located between the first end 21 a and the second end 21 b .

[0054] In the oil guide member 2, the first connecting portion 23 includes a first connecting fulcrum 231, a second connecting fulcrum 232 and a third connecting fulcrum 233, the first connecting fulcrum 231 is arranged at the first end 21a, the second connecting fulcrum 232 is arranged at the second end 21b, and the third connecting fulcrum 233 (please refer to Figure 6 ) is arranged at the curved section 21c. In the gear box housing 3, the second connecting portion 31 corresponds to the first connecting fulcrum 231, the second connecting fulcrum 232 and the third connecting fulcrum 233 respectively. The three connecting fulcrums are arranged, and are respectively located at the first end 21a, the second end 21b and the curved section 21c, so that the oil guide member 2 and the gear box housing 3 can be more tightly connected.

[0055] In the oil guide member 2, the first limit portion 25 includes a first limit fulcrum 251 and a second limit fulcrum 252. The first limit fulcrum 251 is arranged at the first end 21a, and the second limit fulcrum 252 is arranged at the curved section 21c. In the gear box housing 3, the second limit portion 32 corresponds to the first limit fulcrum 251 and the second limit fulcrum 252 respectively. The setting of the three limit fulcrums can better limit the degree of freedom of the oil guide member 2.

[0056] Please refer to Figure 5 and Figure 6 , which is an exploded schematic diagram of the oil guide member 2 and the second housing 302 according to an embodiment of the present application. Figure 7 , which is a cross-sectional view of the oil guide member 2 and the second tank shell 302 shown in an embodiment of the present application.

[0057] The oil guide hole 22 is a through hole provided on the third plate 203 .

[0058] In the oil guide member 2, the first connecting fulcrum 231 includes a first connecting boss 2311 and a second connecting boss 2312. The first connecting boss 2311 is arranged on the first plate 201, and a first connecting hole 2311a is provided on the first connecting boss 2311. The second connecting boss 2312 is arranged on the second plate 202, and a second connecting hole 2312a is provided on the second connecting boss 2312.

[0059] In the oil guide member 2 , the second connection fulcrum 232 comprises a connection piece 2321 , one end of the connection piece 2321 is connected to the third plate 203 , and the other end is suspended, and a third connection hole 2321 a is provided on the connection piece 2321 .

[0060] In the oil guide member 2 , the third connection fulcrum 233 includes a third connection boss 2331 . The third connection boss 2331 is disposed on the third plate 203 . The third connection boss 2331 is provided with a fourth connection hole 2331 a .

[0061] In the gear box housing 3, the second connecting portion 31 includes a mounting hole, which is provided on the second box housing 302 and is used to pass the fastener 24 (see Figure 2 The mounting holes include a first mounting hole 311a matching the first connection hole 2311a, a second mounting hole 312a matching the second connection hole 2312a, a third mounting hole 313a matching the third connection hole 2321a, and a fourth mounting hole 314a matching the fourth connection hole 2331a.

[0062] The fastener 24 includes a bolt 24a and a washer 24b (see Figure 2), the gasket 24b can be a washer to prevent vibration loosening. The fastener 24 includes a first fastener 241, a second fastener 242, a third fastener 243 and a fourth fastener 244, the first fastener 241 is inserted between the first connecting hole 2311a and the first mounting hole 311a, the second fastener 242 is inserted between the second connecting hole 2312a and the second mounting hole 312a, the third fastener 243 is inserted between the third connecting hole 2321a and the third mounting hole 313a, and the fourth fastener 244 is inserted between the fourth connecting hole 2331a and the fourth mounting hole 314a, for fixing the oil guide 2.

[0063] In this embodiment, the first connection hole 2311a, the second connection hole 2312a, the third connection hole 2321a and the fourth connection hole 2331a are not connected to the groove 21, so oil leakage can be avoided. Two third fasteners 243 are provided.

[0064] In this embodiment, the first connecting hole 2311a, the second connecting hole 2312a and the fourth connecting hole 2331a are all threaded blind holes, the first mounting hole 311a, the second mounting hole 312a and the fourth mounting hole 314a are all through holes passing through the second box shell 302, the third connecting hole 2321a is a through hole, and the third mounting hole 313a is a threaded blind hole, so that the heads of the bolts 24a in the fastener 24 are not in the inner cavity of the gear box shell 3, that is, they are located outside the second box shell 302 or facing the outside of the second box shell 302, which is convenient for installation.

[0065] In the oil guide member 2, the first limiting fulcrum 251 includes a third limiting boss 2511, and the third limiting boss 2511 is provided on the third plate 203. The second limiting fulcrum 252 includes a first limiting boss 2521 and a second limiting boss 2522, and the first limiting boss 2521 is provided on the first plate 201, and the second limiting boss 2522 is provided on the second plate 202. In this embodiment, two first limiting bosses 2521 and two second limiting bosses 2522 are provided. A groove is provided on each first limiting boss 2521 and each second limiting boss 2522.

[0066] In the gear box housing 3, the second limiting portion 32 includes a limiting block, which is arranged on the inner surface of the second box housing 302 and is used to abut against the first limiting portion 25, thereby limiting the movement of the oil guide member 2. The limiting block includes a first limiting block 321 corresponding to the first limiting boss 2521, a second limiting block 322 corresponding to the second limiting boss 2522, and a third limiting block 323 corresponding to the third limiting boss 2511. In this embodiment, two first limiting blocks 321 and two second limiting blocks 322 are provided. Both the first limiting blocks 321 and the second limiting blocks 322 are cylindrical.

[0067] In this embodiment, the direction of the first plate 201 of the oil guide member 2 pointing to the second plate 202 is defined as backward, the third plate 203 is located below the first plate 201 and the second plate 202, and the direction of the first end 21a pointing to the second end 21b is defined as rightward, thereby defining the up and down, left and right, and front and back directions of the oil guide member 2.

[0068] The first fastener 241 and the second fastener 242 can limit the freedom of the oil guide member 2 in the front-to-back direction, the third fastener 243 can limit the freedom of the oil guide member 2 in the up-down direction, and the axis of the fourth fastener 244 is inclined to limit the freedom of the oil guide member 2 in the up-down and left-right directions. The first limit block 321 and the second limit block 322 can limit the freedom of the oil guide member 2 in the front-to-back direction, and the second limit block 322 can limit the rotation of the oil guide member 2 and the upward freedom of the oil guide member 2. Therefore, the six degrees of freedom of the oil guide member 2 in this embodiment are all limited by the gear box housing 3.

[0069] In this embodiment, a protrusion 26 is provided on the inner surface of the first plate 201 and the second plate 202, which can not only reduce the end face gap between the inner wall of the groove 21 and the gear 1, but also when the gear 1 rotates, the lubricating oil is thrown into the groove 21 by the gear 1, and when it flows to the vicinity of the oil guide hole 22, the lubricating oil can flow along the protrusion 26.

[0070] The first plate 201 is connected to a support plate 27 , and the support plate 27 and the first plate 201 can form an oil guide groove 271 to increase the volume of the channel 21 .

[0071] Please refer to Figure 8 , which is the present application Figure 1 The first housing 301 is provided with a first groove 3011 , and the second housing 302 is provided with a second groove 3021 . The first groove 3011 and the second groove 3021 form a space for accommodating the third fastener 243 and the connecting piece 2321 .

[0072] Please refer to Fig. 9 , which is the present application Figure 1 The fourth mounting hole 314a is threadedly connected with a nut 315, and the nut 315 is used to close the fourth mounting hole 314a to prevent the gear box 100 from leaking oil.

[0073] Please refer to Fig.10 , which is the present application Figure 1 The third limit stopper 323 is disposed above the third limit boss 2511, and is used to limit the rotation of the oil guide member 2 and the upward movement of the oil guide member 2.

[0074] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An oil guide member, characterized in that: include: An oil guide housing body, the oil guide housing body comprising: a first plate, a second plate and a third plate, the second plate being spaced apart from the first plate, the third plate being connected to the first plate and the second plate respectively, and a first connecting portion for fixing the oil guide housing body and a first limiting portion for limiting the movement of the oil guide housing body being provided on the oil guide housing body; A groove is provided on the oil guide housing body; and at least one oil guide hole, provided on the oil guide housing body and communicating with the channel, wherein the first plate, the second plate and the third plate form the channel; the channel is arc-shaped, and has a first end and a second end that penetrate through the oil guide housing body, and a curved section located between the first end and the second end; Wherein, the first connecting portion comprises: a first connecting fulcrum, arranged at the first end, comprising a first connecting boss and a second connecting boss, the first connecting boss being arranged on the first plate, a first connecting hole being arranged on the first connecting boss, the second connecting boss being arranged on the second plate, a second connecting hole being arranged on the second connecting boss; a second connecting fulcrum, arranged at the second end, comprising a connecting sheet, one end of the connecting sheet being connected to the third plate, the other end being suspended, a third connecting hole being arranged on the connecting sheet; and a third connecting fulcrum, arranged at the bending section, comprising a third connecting boss, the third connecting boss being arranged on the third plate, a fourth connecting hole being arranged on the third connecting boss; wherein, the first connecting hole, the second connecting hole, the third connecting hole and the fourth connecting hole are all used for passing fasteners; The first limiting portion includes: a first limiting fulcrum, arranged at the first end, including a third limiting boss, and the third limiting boss is arranged on the third plate; and a second limiting fulcrum, arranged at the bending section, including a first limiting boss and a second limiting boss, the first limiting boss is arranged on the first plate, and the second limiting boss is arranged on the second plate.

2. A gear box housing, characterized in that: It is used for installation and use in conjunction with the oil guide member according to claim 1, and comprises a box shell body, on which a second connecting portion corresponding to the first connecting portion and a second limiting portion corresponding to the first limiting portion are provided.

3. The gearbox housing according to claim 2, characterized in that: The box shell body comprises a first box shell and a second box shell connected to each other, and the second connecting portion and the second limiting portion are both arranged on the second box shell.

4. The gearbox housing according to claim 3, characterized in that: The second connecting portion comprises: The mounting hole is arranged on the second box shell and is used for passing the fastener.

5. The gearbox housing according to claim 4, characterized in that: The second limiting portion includes: A limit stopper is arranged on the inner surface of the second box shell and is used for abutting against the first limit portion.

6. A gear box, characterized in that: include: The gear box housing is the gear box housing according to any one of claims 2 to 5; An oil guide member, which is the oil guide member according to claim 1 and is disposed in the gear box housing; and A gear is arranged in the gear box housing, and a partial area of ​​the gear extends into the groove.

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