CN113048227A

CN113048227A - Agricultural mechanical gearbox

Info

Publication number: CN113048227A
Application number: CN202110363520.9A
Authority: CN
Inventors: 黄泽伟; 晋安武; 康章保; 王茂静
Original assignee: Chuzhou Yueda Industrial Co ltd
Current assignee: Chuzhou Yueda Industrial Co ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2021-06-29
Anticipated expiration: 2041-04-02
Also published as: CN113048227B

Abstract

The invention discloses an agricultural mechanical gearbox, which comprises a gearbox shell and a transmission gear set arranged in the gearbox shell, wherein the bottom surface of the gearbox shell is obliquely arranged, and the inclined surface faces to an oil collecting cavity formed in the bottom of the gearbox shell; the oil-collecting device also comprises an oil discharge channel, one end of the oil discharge channel is communicated with the bottom of the oil collecting cavity, and the other end of the oil discharge channel is provided with an oil seal assembly; the oil discharge channel is internally provided with a spiral edge so as to form a vortex when discharging oil. According to the agricultural mechanical gearbox, the spiral vortex can be formed at the position of the oil collecting cavity in the oil discharging process through the spiral oil sealing cylinder, impurities in the gearbox shell can be brought into the oil collecting cavity in the vortex forming process, so that the impurities in the gearbox shell can flow out along with the spiral gear oil, the impurities are brought out to the greatest extent, and the impurities in the gearbox can be cleaned conveniently.

Description

Agricultural mechanical gearbox

Technical Field

The invention relates to the technical field of agricultural machinery, in particular to an agricultural mechanical gearbox.

Background

The agricultural machinery refers to various machinery used in the production process of crop planting industry and animal husbandry, and the primary processing and treatment process of agricultural and animal products, the agricultural machinery includes agricultural power machinery, farmland construction machinery, soil cultivation machinery, planting and fertilizing machinery, plant protection machinery, farmland irrigation and drainage machinery, crop harvesting machinery, agricultural product processing machinery, animal husbandry machinery, etc., the tractor is one of the common agricultural tools in rural areas, and is widely used due to its wide function, although the agricultural tractor has simple structure and convenient maintenance, since the tractor works in an environment-complex area for a long time, if the maintenance work of the gearbox is neglected, operation problems are easy to occur during speed changing, and mechanical abrasion is accelerated to cause tractor failure and loss, so that maintenance work in the agricultural gearbox is the heaviest among users;

the gear box is required to be checked after the tractor is used each time, gear oil is properly added into the gear box in order to increase the lubricity between the gear and the gear in the gear box, the gear oil is replaced according to the actual inside of the gearbox, generally the gear oil in the gearbox needs to be replaced after the tractor works for 100 hours, because more impurities can appear in the gearbox shell after the tractor is used for a long time, therefore, the gear needs to be cleaned before adding new gear oil, for example, the invention name of the Chinese patent with the publication number of "CN 207349417U" is "an automobile gearbox oil pan with automatic cleaning function", the oil pan is provided with an oil inlet, an oil outlet and an oil duct, wherein the oil inlet is communicated with one end of the oil duct, the other end of the oil duct is closed, and the oil duct is provided with more than one oil injection hole. "it can accomplish the function of self-cleaning without disassembling the bottom shell.

The shortcoming of prior art lies in, the iron fillings impurity of current gearbox inside is difficult for clearing up, even carry out the oil drain through current oil blanket screw, the iron fillings impurity of gearbox inside also is difficult to be in the same direction as taking out to long-time use back, can pile up more impurity in the gearbox casing, influence the normal operation of gearbox.

Disclosure of Invention

The invention aims to provide an agricultural mechanical gearbox, which aims to overcome the defects in the prior art.

In order to achieve the above purpose, the invention provides the following technical scheme:

the utility model provides an agricultural machinery gearbox, includes the gearbox casing to and the drive gear train of setting in the gearbox casing, its characterized in that: the bottom surface of the gearbox shell is obliquely arranged, and the inclined surface faces to an oil collecting cavity formed in the bottom of the gearbox shell;

the oil-collecting device also comprises an oil discharge channel, wherein one end of the oil discharge channel is communicated with the bottom of the oil collecting cavity, and the other end of the oil discharge channel is provided with an oil seal assembly;

the size of the oil discharge channel is between 4 and 6cm, and a spiral edge is arranged in the oil discharge channel so that a vortex is formed during oil discharge.

Preferably, a detachable oil seal cylinder is arranged in the oil discharge channel, and the spiral edge is arranged in the oil seal cylinder.

Preferably, a detachable oil seal sleeve is arranged in the oil discharge channel, and the oil seal sleeve is detachably connected into the oil seal sleeve through an oil seal assembly.

Preferably, the oil seal sleeve is screwed into the oil discharge passage.

Preferably, the oil seal assembly comprises an oil seal knob and a threaded portion in the oil seal sleeve in threaded connection, and the threaded portion is fixedly arranged on the oil seal knob.

Preferably, a plurality of fixing portions are movably arranged on the oil seal sleeve, and a fixing groove matched with the fixing portions is formed in the oil collecting cavity.

And the thread part is provided with a driving assembly for driving the fixing part to open and clamp into the fixing groove.

Preferably, the driving assembly comprises a fixed rack and a fixed ring, and the fixed rack is fixedly arranged on the fixed ring;

the thread part is fixedly provided with a plurality of connecting rods, the connecting rods are fixedly provided with connecting rings, and the connecting rings are rotatably connected to the fixing rings.

Preferably, the bottom of the oil seal cylinder is provided with a bulge embedded in a seal groove formed in the oil seal sleeve, the bulge abuts against the thread portion, and the bulge is provided with a seal gasket.

Preferably, a first transmission gear capable of being meshed with the fixed rack is arranged in the fixed portion.

Preferably, the oil seal knob is further provided with a sealing plate, and the sealing plate is further provided with a sealing ring which can be inserted into the oil seal cylinder.

In the technical scheme, the agricultural mechanical gearbox provided by the invention has the beneficial effects that:

according to the invention, the inclined surface and the oil collecting cavity communicated with the oil drain hole are arranged at the bottom of the gearbox shell, then the oil seal structure capable of discharging oil rapidly is arranged in the oil drain hole, the spiral oil seal cylinder is arranged in the oil seal structure, so that a spiral vortex can be formed at the position of the oil collecting cavity in the oil discharging process through the spiral oil seal cylinder in the spiral structure during oil discharging, impurities in the gearbox shell can be brought into the oil collecting cavity in the vortex forming process, so that the impurities and iron chips in the gearbox shell can flow out along with the spiral gear oil, the impurities are brought out to the greatest extent, the impurities in the gearbox shell can be cleaned conveniently, and the gear oil can be replaced conveniently.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic diagram of an overall structure provided in an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a transmission according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a position structure of an oil seal according to an embodiment of the present invention;

FIG. 4 is an enlarged schematic view of a portion A according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an oil seal sleeve provided in an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a fixing portion, an oil-sealed sleeve and an oil-sealed knob according to an embodiment of the present invention;

FIG. 7 is an exploded view of an oil seal configuration according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of an oil seal sleeve and an oil seal cylinder provided by an embodiment of the invention;

FIG. 9 is a schematic structural diagram of an oil-sealed knob and a sealing ring according to an embodiment of the present invention;

FIG. 10 is a schematic structural view of a locking assembly provided by an embodiment of the present invention;

FIG. 11 is a cross-sectional view of a locking assembly according to an embodiment of the present invention;

FIG. 12 is an internal schematic view of a transmission housing according to an embodiment of the present invention;

FIG. 13 is a side elevational view of the transmission housing in accordance with the exemplary embodiment of the present invention;

fig. 14 is a schematic structural diagram of a fixing portion and a first transmission gear according to an embodiment of the present invention;

FIG. 15 is a side view of the transmission housing and protective plate according to the embodiment of the present invention;

FIG. 16 is a schematic diagram of a structure of a position where a spiral rib is located in an oil seal cylinder according to an embodiment of the present invention;

FIG. 17 is a schematic view of the flow direction of a laminar liquid flow;

FIG. 18 is a schematic view of the direction of liquid turbulence;

fig. 19 is a schematic view of the direction of the liquid vortex.

Description of reference numerals:

1. a transmission housing; 101. an oil discharge passage; 102. an oil collecting cavity; 103. an inclined surface; 2. a transmission mechanism; 3. a drive gear set; 4. an oil seal sleeve; 401. sealing the groove.

5. An oil seal knob; 501. a threaded portion; 5011. a connecting rod; 502. a clamping groove.

6. A fixed part; 61. a first drive gear; 8. a connecting ring;

9. an oil seal cylinder; 901. a spiral edge; 902. a projection; 10. fixing a rack; 11. a fixing ring;

12. sealing the oil cover; 121. locking the sliding rod; 1201. a locking groove;

13. a rotating cover; 131. a cam portion; 132. a second transmission gear; 133. a locking block; 1331. a sliding handle.

14. A sealing plate; 141. and (5) sealing rings.

15. A radiating pipe; 16. an elastic connecting piece.

17; a front panel; 171. a limiting rod; 18. a protection plate; 19. a first resisting block; 181. a second resisting block; .

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the word "comprising" or "comprises", and the like, in this disclosure is intended to mean that the elements or items listed before that word, include the elements or items listed after that word, and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Referring to fig. 1-19, an agricultural mechanical transmission comprises a transmission housing 1 and a transmission gear set arranged in the transmission housing 1, wherein the transmission gear set is a gear transmission structure inside the agricultural mechanical transmission in the prior art, the transmission principle of the transmission gear set is common knowledge of technicians in the field, and in order to ensure the normal operation of the transmission gear set, gear oil is added into the transmission housing, so that the transmission gear set has cooling and lubricating effects, the bottom surface of the transmission housing 1 is obliquely arranged, and the inclined surface 103 faces to an oil collecting cavity 102 formed in the bottom of the transmission housing 1; specifically, in this embodiment, gearbox housing 1 is the slope setting, mainly can be when in actual use, and the iron fillings that the long-time use of drive gear group and the inside collision of gearbox housing 1 produced can drop to oil collecting cavity 102 along inclined plane 103 slant gliding when dropping to inclined plane 103 in, be convenient for at the in-process of carrying out the oil extraction, can be by a great extent discharge iron fillings impurity.

The oil-gas separator further comprises an oil discharge channel 101, one end of the oil discharge channel 101 is communicated with the bottom of the oil collecting cavity 102, an oil seal assembly is arranged at the other end of the oil discharge channel 101, the size of the oil discharge channel 101 is 6-10cm, and a spiral edge 901 is arranged in the oil discharge channel 101 so that a vortex is formed during oil discharge. Specifically, as shown in fig. 15, the spiral rib 901 is formed by a plurality of uniform and spiral ribs, and is disposed in the oil seal cylinder 9, that is, when liquid passes through the spiral rib 901, the liquid can flow out along the spiral ribs, and a vortex in a vortex shape is quickly formed, the oil seal cylinder 9 is vertically disposed at the bottom of the transmission case 1, that is, the spiral rib 901 is also vertically disposed in the transmission case;

the spiral edge 901 is arranged in the process of oil drainage, so that the oil can form a water vortex shape in the falling process, namely, the iron filings impurities in the oil collecting cavity 102 can be driven to be discharged along the rotation direction of the vortex, the vertical size of two end points of the spiral edge 901 is between 6 and 10cm, as shown in fig. 15, the vertical size of two end points of the spiral edge 901 is the length between ab, the length between ab is between 6 and 10cm, a liquid vortex can be formed, when the length of the arranged ab is less than 4cm or more than 10cm, a vortex-shaped vortex is formed in the process of being unfavorable for discharging gear oil, or the vortex is difficult to form, namely, when the vertical size of two end points of the spiral edge 901 is the length between ab is between 6 and 10cm, the vortex can be formed during oil drainage, the mentioned vortex means that the rotation angular velocity vector of the fluid is not zero, that is, the gear oil in the oil collecting cavity 102 can form a vortex with a fast flow speed through the arrangement of the spiral edge 901, that is, the flow speed is increased, and the iron filings and impurities in the oil collecting cavity 102 can be brought out sequentially.

According to the invention, the inclined surface 103 and the oil collecting cavity 102 communicated with the oil drain hole are arranged at the bottom of the gearbox shell 1, then the oil seal structure capable of discharging oil rapidly is arranged in the oil drain hole, the spiral oil seal cylinder 9 is arranged in the oil seal structure, so that when oil is discharged, through the arrangement of the spiral structure, a spiral vortex can be formed at the position of the oil collecting cavity 102 in the oil discharging process through the spiral oil seal cylinder 9 in the oil changing process, and impurities in the gearbox shell 1 can be brought into the oil collecting cavity 102 in the vortex forming process, so that the impurities and iron filings in the gearbox shell can flow out along with the spiral gear oil, the impurities are brought out to a great extent, the impurities in the gearbox are convenient to clean, and therefore, the gear oil can be changed more conveniently.

Specifically, in this embodiment, a detachable oil seal cylinder 9 is disposed in the oil discharge passage 101, and the spiral rib 901 is disposed in the oil seal cylinder 9. In this embodiment, the spiral edge 901 is disposed in the oil seal cylinder 9, and the oil seal cylinder 9 is disposed in a detachable structure, so that the spiral edge 901 in the oil seal cylinder 9 can be conveniently cleaned.

In a further embodiment of the present invention, a detachable oil seal sleeve 4 is provided in the oil discharge passage 101, and the oil seal sleeve 9 is detachably connected to the inside of the oil seal sleeve 4 through an oil seal assembly.

Further, oil blanket sleeve 4 threaded connection is in oil drain channel 101, and in this embodiment, oil blanket sleeve 4 threaded connection is in oil drain channel 101, and oil blanket section of thick bamboo 9 passes through oil blanket subassembly and installs to oil drain channel 101 in, is carrying out a period of use back promptly, can dismantle oil blanket section of thick bamboo 9 through oil blanket subassembly, is convenient for to the washing of the interior spiral edge 901 of oil blanket section of thick bamboo 9.

Furthermore, the bottom end of the oil discharge channel 101 is provided with an oil seal assembly, the oil seal assembly comprises an oil seal knob 5 and a thread portion 501 in threaded connection with the oil seal sleeve 4, and the thread portion 501 is fixedly arranged on the oil seal knob 5.

In the scheme further provided by the invention, a plurality of fixing parts 6 are movably arranged on the oil seal sleeve 4, a first transmission gear 61 capable of being meshed with the fixed rack 10 is arranged in each fixing part 6, a fixing groove matched with the fixing part 6 is formed in the oil collecting cavity 102, a driving assembly used for driving the fixing part 6 to be opened and clamped into the fixing groove is arranged on the threaded part 501, the fixing parts 6 and the fixing groove matched with the fixing part 6 are arranged at the bottom of the gearbox shell 1, in the process of installing the oil seal assembly, the fixing parts 6 can be driven into the fixing grooves, the oil seal sleeve 4 is relatively fixed and prevented from sliding, the oil seal barrel 9 can be fixed in the oil seal sleeve 4, the functionality of the oil seal assembly is improved, and the plurality of the fixing parts 6 can prevent the oil seal sleeve 4 from loosening under severe working conditions.

In the embodiment provided by the invention, the driving assembly comprises a fixed rack 10 and a fixing ring 11, wherein the fixed rack 10 is fixedly arranged on the fixing ring 11; a plurality of connecting rods 5011 are fixedly arranged on the threaded portion 501, a connecting ring 8 is fixedly arranged on the connecting rods 5011, and the connecting ring 8 is rotatably connected to the fixing ring 11.

Specifically, the bottom of the oil seal cylinder 9 is provided with a protrusion 902 which is fitted in a seal groove 401 formed in the oil seal sleeve 4, the protrusion 902 abuts against the inside of the thread portion 501, and the protrusion 902 is provided with a gasket. The seal gasket provided on the projecting portion 902 is mainly used for sealing between the oil seal cylinder 9 and the oil seal sleeve 4.

According to a further scheme provided by the invention, a sealing plate 14 is further arranged on the oil sealing knob 5, a sealing ring 141 capable of being inserted into the oil sealing cylinder 9 is further arranged on the sealing plate 14, and the size of the sealing ring 141 is matched with the inner diameter of a through hole of the oil sealing cylinder 9, so that the oil sealing cylinder 9 can be sealed.

In a further embodiment provided by the present invention, the oil-sealed knob 5 is provided with a locking assembly, the locking assembly includes a rotary cover 13, an oil seal cover 12, and a locking slide rod 121 slidably disposed on the oil seal cover 12, the rotary cover 13 is rotatably disposed on the oil seal cover 12, and the rotary cover 13 is further provided with a second transmission gear 132, and the second transmission gear 132 is engaged with a rack disposed on the locking slide rod 121 in a transmission manner. The invention can instantly pull out the oil seal cover 12 and the sealing ring 141 to facilitate the discharge of the gear oil by arranging the oil seal cover 12 which is quickly disassembled on the oil seal knob 5, namely, in the process of discharging the gear oil, the cam part 131 and the locking slide rod 121 are arranged on the rotary cover 13, so that the cam part 131 can be tightly propped against the sealing plate 14 and the sealing ring 141 is propped against the inner wall of the oil seal cylinder 9 when the rotary cover 13 is locked, the sealing effect is enhanced, the locking slide rod 121 is mainly used for locking the oil seal cover 12 and the oil seal knob 5, the cam part 131 is also arranged on the rotary cover 13, the cam part 131 can be propped against the sealing plate 14, the cam part 131 is arranged on the sealing plate 14, then the sealing plate 14 is extruded through the cam part 131 to be propped against the sealing ring 141, so that the sealing ring 141 is clamped into the oil seal cylinder 9, thereby enhancing the sealing performance of the oil seal cylinder 9, and in the process, the seal ring 141 is not pressed by the cam portion 131, the rotary cap 13 is pulled to instantly pull out the seal ring 141 to discharge oil, two elastic locking blocks 133 are slidably provided on the rotary cap 13, the elastic locking blocks 133 can be engaged with locking grooves 1201 formed on the oil seal cap 12, an elastic member is provided between the two locking blocks 133, and the elastic force of the elastic member moves the two locking blocks 133 in the direction of the locking grooves 1201, that is, the two locking blocks 133 can be engaged with the locking grooves 1201.

In a further embodiment of the present invention, as shown in fig. 15, a protection plate 8 is movably connected to the bottom of the transmission housing 1 through an elastic connection member 16, the protection plate 8 is parallel to an inclined surface 103 of the bottom of the transmission housing 1, the elastic connection member 16 is hinged to the protection plate 18 and the transmission housing 1, a front plate 17 and a limit rod 171 for limiting the position of the front plate 17 are further disposed in front of the transmission housing 1, the front plate 17 is hinged to the transmission housing 1, a torque spring is disposed at the hinged position, the elastic force of the torque spring is in a direction away from the transmission housing 1, the limit rod 171 is also hinged to the transmission housing 1, protruding columns are disposed at two sides of the front plate 17, the protruding columns are slidably disposed in through slots formed in the limit rod 171, the protection plate 18 is hinged to the front plate 17, and the hinged position of the elastic connection member 16 and the protection plate 18 is disposed with the torque spring, under the action of the elastic force of the torque spring, the protection plate 18 is abutted to the direction of the front plate 17, then when the protection plate 18 is impacted by a foreign object by advancing in an agricultural machine, the protection plate 18 has a buffering process backwards, namely the protection plate 18 buffers along the inclined surface to the back of the gearbox shell 1, and in the buffering process, the protection plate 18 is always parallel to the inclined surface 103, namely the gearbox shell 1 can be protected.

More preferably, a plurality of first abutting blocks 19 are disposed on the inclined surface 103, and a plurality of second abutting blocks 181 staggered with the first abutting blocks 19 are disposed on the protection plate 18, when the protection plate 18 is impacted, the inclined surfaces of the first abutting blocks 19 and the inclined surfaces of the second abutting blocks 181 are in one-to-one correspondence and abutted, so as to further buffer the impact force, and the stability of the protection plate 18 can be integrally maintained in the process of buffering, in order to reduce the temperature inside the transmission case, in the present embodiment, the heat dissipation pipes 15 are disposed on the inclined surface 103, the heat dissipation pipes 15 are uniformly distributed between the first abutting blocks 19, that is, the temperature inside the transmission case can be reduced, the heat dissipation pipes 15 are heat dissipation pipes of the transmission case, the structure thereof is common knowledge and conventional technical means of those skilled in the art, and details are not repeated, in this embodiment, only one section of the inclined surface 103 is disposed, so as to enhance the, and the heat dissipation tube 15 vertically corresponds to the second abutting block 181, that is, when the impact force is applied, the second abutting block 181 arranged on the protection plate abuts against the first abutting block 19, so that the heat dissipation tube 15 can be protected.

When the invention is installed, firstly the oil seal sleeve 4 (before the installation, the fixing part 6 is needed to be shifted to the state as shown in figure 6 to ensure that the installation of the oil seal sleeve 4 is not hindered when the installation of the oil seal sleeve 4 is carried out) is screwed into the oil drain hole, when the installation of the oil seal sleeve 4 is finished, the fixing part 6 corresponds to the notch of the fixing groove arranged on the transmission case body 1, then the oil seal sleeve 9 is installed into the oil seal sleeve 4, when the installation is carried out, the convex part 902 is embedded in the oil seal sleeve 4, then the oil seal knob 5 is installed, when the installation is carried out, the fixing racks 10 arranged on the fixing ring 11 are respectively inserted into the oil seal sleeve 4 to enable the fixing parts to correspond to one by one, then the thread part 501 is connected with the oil seal sleeve 4, then the oil seal knob 5 is continuously screwed, during the screwing process, the fixing racks 10 are respectively inserted into the holes corresponding to the fixing part 6 in the oil seal sleeve 4, and the fixed ring 11 and the connecting ring 8 are rotatably arranged, that is, in the process of screwing, the fixed rack 10 gradually moves towards the direction close to the fixed part 6, and then is meshed with the first transmission gear 61 arranged on the fixed part 6, in the continuous screwing process, the fixed part 6 is driven to rotate along the rotating shaft of the first transmission gear 61, that is, the fixed part 6 spreads around the oil seal sleeve 4 as the center, that is, the fixed part 6 is clamped into a fixed groove arranged on the gearbox shell 1, when the thread part 501 is screwed completely into the oil seal sleeve 4, the bulge 902 arranged at the bottom of the oil seal sleeve 9 is abutted into the thread part 501 to lock the oil seal sleeve 9, at this time, the oil seal sleeve 4, the oil seal sleeve 9 and the oil seal knob 5 are completely installed, then in the process of gearbox operation, the seal ring 141 is clamped into the oil seal sleeve 9, the locking slide rod 121 is clamped into the clamping groove 502, and the cam part 131 is abutted against the seal, the locking piece 133 is caught in the locking groove 1201.

When the gear oil needs to be replaced after working for a period of time, only two sliding handles 1331 are respectively pushed to the middle position of the rotary cover 13, then the two locking blocks 133 are separated from the locking grooves 1201, then the rotary cover 13 is buckled downwards, the rotary cover 13 rotates outwards along the axial direction hinged with the oil seal cover 12, in the process of rotating, the second transmission gear 132 is driven to rotate, then the meshed locking slide rod 121 is driven to move towards the direction far away from the clamping groove 502, namely the locking slide rod 121 is driven to be separated from the clamping groove 502, then the spacing between the oil seal cover 12 and the oil seal knob 5 is released, the cam part 131 is not contacted with the sealing plate 14, then the rotary cover 13 is continuously pulled outwards, so that the oil seal cover 12 rotates along the shaft connected with the oil seal knob 5, namely the sealing plate 14 and the sealing ring 141 are driven to be separated from the oil seal barrel 9 instantly, then the gear oil in the gearbox is discharged through the oil seal barrel 9 instantly, then, through the action of the spiral edge 901, the gear has vortex which forms vortex in the oil collecting cavity 102, and impurities in the oil collecting cavity 102 can be greatly discharged through gear oil.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. The utility model provides an agricultural machinery gearbox, includes gearbox housing (1) to and the drive gear group of setting in gearbox housing (1), its characterized in that: the bottom surface of the transmission case (1) is obliquely arranged, and the inclined surface (103) faces the inside of an oil collecting cavity (102) formed in the bottom of the transmission case (1);

the oil-collecting device also comprises an oil discharge channel (101), one end of the oil discharge channel (101) is communicated with the bottom of the oil collecting cavity (102), and the other end of the oil discharge channel is provided with an oil seal assembly;

the oil discharge channel (101) is internally provided with a spiral edge (901) so as to form a vortex during oil discharge, and the vertical size of two end points of the spiral edge (901) is between 6 and 10 cm.

2. An agricultural mechanical gearbox according to claim 1, wherein a detachable oil seal cylinder (9) is arranged in the oil discharge channel (101), and the spiral rib (901) is arranged in the oil seal cylinder (9).

3. An agricultural mechanical gearbox according to claim 2, wherein a detachable oil seal sleeve (4) is arranged in the oil discharge channel (101), and the oil seal sleeve (9) is detachably connected in the oil seal sleeve (4) through an oil seal assembly.

4. An agricultural mechanical gearbox according to claim 1, wherein the oil seal sleeve (4) is threaded within the oil drainage channel (101).

5. An agricultural mechanical gearbox according to claim 3, wherein the oil seal assembly comprises an oil seal knob (5) and a threaded portion (501) in threaded connection with the oil seal sleeve (4), and the threaded portion (501) is fixedly arranged on the oil seal knob (5).

6. The agricultural mechanical gearbox as claimed in claim 1, wherein a plurality of fixing portions (6) are movably arranged on the oil seal sleeve (4), and fixing grooves matched with the fixing portions (6) are formed in the oil collecting cavity (102);

and the thread part (501) is provided with a driving assembly for driving the fixing part (6) to open and clamp into the fixing groove.

7. An agricultural mechanical gearbox according to claim 6, characterized in that the drive assembly comprises a fixed rack (10) and a fixed ring (11), the fixed rack (10) being fixedly arranged on the fixed ring (11);

the thread part (501) is fixedly provided with a plurality of connecting rods (5011), the connecting rods (5011) are fixedly provided with connecting rings (8), and the connecting rings (8) are rotatably connected to the fixing rings (11).

8. The agricultural mechanical gearbox as claimed in claim 2, wherein a protrusion (902) is arranged at the bottom of the oil seal sleeve (9), the protrusion (902) is embedded in a seal groove (401) formed at the bottom of the oil seal sleeve (4), the protrusion (902) abuts against the thread portion (501), and a seal gasket is arranged on the protrusion (902).

9. An agricultural mechanical gearbox according to claim 1, characterized in that the fixed part (6) is provided with a first transmission gear (61) which can engage with the fixed rack (10).

10. The agricultural mechanical gearbox as claimed in claim 1, wherein a sealing plate (14) is further arranged on the oil seal knob (5), and a sealing ring (141) which can be inserted into the oil seal cylinder (9) is further arranged on the sealing plate (14).