CN115585242A

CN115585242A - Aluminum-magnesium alloy transmission shell capable of exhausting and reducing pressure

Info

Publication number: CN115585242A
Application number: CN202211220436.2A
Authority: CN
Inventors: 方英伟; 刘佳炎; 张建烽
Original assignee: Jiangsu Chuangsida Technology Co ltd
Current assignee: Jiangsu Chuangsida Technology Co ltd
Priority date: 2022-10-06
Filing date: 2022-10-06
Publication date: 2023-01-10
Anticipated expiration: 2042-10-06
Also published as: CN115585242B

Abstract

The invention relates to the technical field of transmissions, and discloses an aluminum-magnesium alloy transmission shell capable of exhausting and reducing pressure, which comprises a transmission component, wherein the transmission component comprises a transmission shell and a power shaft arranged at the output end of the transmission shell, a driving groove is formed in the inner cavity of the transmission shell, a driving disc is arranged on one side of the outer surface of the power shaft, a first magnetic block is arranged on the outer surface of the driving disc, a limiting column capable of limiting and stretching is arranged in the inner cavity of a top cover, the top surface of the inner cavity of the top cover downwards extends to the inner cavity of an exhaust pipe, a rotating pipe is arranged around the axis of the exhaust pipe, a scraping plate with a side wall attached to the outer surface of the exhaust pipe is arranged at the upper end of the rotating pipe upwards extends to the lower end of the top cover, and the top end of the scraping plate is of a triangular structure.

Description

Aluminum-magnesium alloy transmission shell capable of exhausting and reducing pressure

Technical Field

The invention relates to the technical field of transmissions, in particular to an aluminum-magnesium alloy transmission shell capable of exhausting and reducing pressure.

Background

A transmission is a mechanism for changing the speed and torque from an engine, which can change the ratio of the output shaft to the input shaft, either fixed or in steps, also known as a gearbox. The speed variator consists of speed-changing transmission mechanism and control mechanism, and some vehicles also have power output mechanism. The transmission mechanism is mainly driven by common gears and also driven by planetary gears. The common gear transmission mechanism generally uses a sliding gear, a synchronizer and the like.

When the existing transmission is used, the gears in the transmission can be lubricated by oil liquid, the gears in the transmission are prevented from being in a state of abrasion, high temperature can occur in the transmission due to various meshing transmissions among the gears when the transmission is used, and the pressure inside the transmission is high due to the high temperature, so that an exhaust pipe of a one-way valve assembly can be arranged on the surface of a shell of the transmission, the pressure inside and outside the transmission is balanced through the exhaust pipe, some impurities can enter the exhaust pipe when a vehicle runs, a top cover can be covered at the port of the exhaust pipe, the protection effect is further achieved through the self gravity of the top cover or the resilience of a spring, but in the moving process of the vehicle, the top cover of the exhaust pipe is easily covered by sludge accumulated for a long time, after the top cover is covered and blocked by the sludge, the air pressure inside the exhaust pipe is not enough to jack the top cover again, the air pressure inside the exhaust pipe is easily blocked, and the air pressure inside the transmission is further increased.

The problems described above are addressed. Therefore, the aluminum-magnesium alloy transmission shell capable of exhausting and decompressing is provided.

Disclosure of Invention

The invention aims to provide an aluminum-magnesium alloy transmission shell capable of exhausting and reducing pressure, wherein a first extrusion disc and a second extrusion disc are arranged in a trapezoidal structure, so that a rotary rod can be pulled downwards through the rotary belt after the rotary belt is extruded, a crown gear can be driven to rotate through a gear after the rotary rod rotates, a scraper can be driven to scrape oil sludge after the crown gear rotates, and when the scraper rotates, a top cover can be jacked up through a top end triangular structure, so that the anti-blocking effect is achieved.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an almag derailleur shell that can exhaust decompression, including the derailleur subassembly, the power shaft that the output that the derailleur subassembly includes derailleur shell and derailleur shell set up, the drive groove has been seted up to the inner chamber of derailleur shell, power shaft surface one side that is located the setting of derailleur shell inner chamber is provided with the driving-disc that can rotate along with the power shaft, the edge circumference equidistance of driving-disc is provided with the first magnetic path that can adsorb by magnetism, upper end one side of derailleur shell is provided with the blast pipe rather than the communicating inner chamber, the fixed drive case that is provided with in upper end of derailleur shell, and the drive case cup joints in the surface of blast pipe, the upper end opening part of blast pipe has cup jointed the top cap, the lower extreme opening edge of top cap is provided with the triangle-shaped piece, the inner chamber top of top cap downwardly extending to the inner chamber of blast pipe is provided with spacing post that can spacing flexible, be provided with the swivel pipe around the axle center department of its blast pipe, the upper end of swivel pipe upwards extends to the lower extreme of top cap and is provided with the scraper blade that the lateral wall laminating in the blast pipe surface, and the top of scraper blade is the triangle-shaped structure.

Further, the lower extreme edge of rotatory pipe is provided with the crown gear, and the fixed flexible subassembly that is provided with of inner chamber roof of drive case is a pair of run through between the flexible subassembly and be provided with the rotary rod, rotary rod surface one side end be provided with can with the gear that crown gear meshing is connected, the fixed swiveling wheel that can drive the gear rotation that is provided with in the surface middle section of rotary rod, and the surface indent department of swiveling wheel is trapezoidal shape structure setting.

Further, flexible subassembly include with drive case inner chamber roof fixed connection's bottom tube, the inner chamber bottom surface of bottom tube is run through to the inner chamber and is provided with rings, and the surface one side of rings is run through by the rotary rod, and the rings surface has cup jointed the second spring.

Further, one side of the outer surface of an exhaust pipe arranged in the inner cavity of the driving box is provided with a first rotating hole in a penetrating mode, the inner cavity of the first rotating hole is provided with a rotating pipe assembly, the rotating pipe assembly comprises a condensation pipe and a drainage pipe arranged at one end of the condensation pipe, a first extrusion disc is fixedly arranged at one end of the outer surface of the drainage pipe, and second magnetic blocks capable of being magnetically attracted with the first magnetic blocks are arranged on the edge of the first extrusion disc in the circumferential direction at equal intervals.

Furthermore, the rotating belt is sleeved on one side of the outer surface of the rotating wheel and one side of the outer surface of the drainage tube, the second extrusion disc is arranged on one side of the outer surface of the first extrusion disc oppositely, the upper end of the drainage tube, which is close to one side of the first extrusion disc, penetrates through the limiting groove, and the air pressure groove is formed in the inner cavity of the drainage tube.

Furthermore, a telescopic rod penetrates through one side of the inner cavity wall of the air pressure groove, a first connecting rod is arranged from one end of the outer surface of the telescopic rod to the inner ring wall of the second extrusion disc, a moving rod extends from the end face, far away from the first connecting rod, of the telescopic rod, a second air valve is sleeved on the outer surface of the moving rod, a third spring is arranged between one side of the outer surface of the second air valve and the inner cavity wall of the air pressure groove, the elastic force of the third spring is greater than that of the first spring, and a first air inlet communicated with the inner cavity of the air pressure groove is formed in one side of the outer surface of the condensation pipe.

Furthermore, one side of the outer surface of the driving box penetrates through the inner cavity and is provided with a second rotating hole, one end of the outer surface of the condensation pipe penetrates through the inner cavity of the second rotating hole and is provided with an air inlet pipe, one end of the outer surface of the air inlet pipe is inwards provided with a second air inlet hole, and the bottom surface of the inner cavity of the second air inlet hole is provided with fan blades.

Furthermore, the radiating pipe is arranged in the direction of the condensing pipe from the bottom surface of the inner cavity of the second air inlet hole, and the tail end of the radiating pipe extends to one side of the outer surface of the air inlet pipe and is provided with an air vent in a penetrating mode.

Furthermore, the upper and lower opposite positions of the outer surface of the condenser pipe are provided with grooves, the outer surface of the condenser pipe is sleeved with a scraping ring, and a second connecting rod is fixedly arranged between one side of the outer surface of the scraping ring and one side of the outer surface of the second air valve.

Further, the lower edge of the inner cavity wall of the exhaust pipe is fixedly provided with a first bottom plate, the upper end of the first bottom plate downwards penetrates through a first air valve, and the lower edge of the outer surface of the first air valve is sleeved with a first spring.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention provides an aluminum-magnesium alloy transmission shell capable of exhausting and reducing pressure, when a transmission component operates, a first magnetic block connecting block drives a second magnetic block to rotate together, then a top cover arranged at the upper end of the transmission shell is blocked by oil sludge adhesion, at the time, when air pressure in an inner cavity of the transmission shell needs to exhaust due to operation, the air can be exhausted through an exhaust pipe, when the top cover is blocked, the pressure in the inner cavity of the exhaust pipe rises continuously, then the air pressure can push a second air valve to move towards one side of a first extrusion disc, a telescopic rod can be pushed to move after the second air valve moves, a certain drainage effect can be achieved on the air pressure after the second air valve moves, the telescopic rod pushes a second extrusion disc to move together after moving, a rotary belt can be extruded after the second extrusion disc moves, the rotary rod can be pulled downwards through the rotary belt after the rotary rod rotates, a crown gear can be driven to rotate through the crown gear after the crown gear rotates, and the scraper can scrape the top end of the scraper when the scraper rotates, the top cover can push the top cover to move, the top cover to further achieve a triangular structure, and a gas blockage preventing effect can be achieved after the crown gear rotates, and the gas can be conveniently separated from a third crown gear.

2. According to the aluminum-magnesium alloy transmission shell capable of exhausting and reducing pressure, when the rotating pipe assembly continuously rotates through magnetic force, the fan blades arranged in the inner cavity of the air inlet pipe rotate, air flow can enter the inner cavity of the radiating pipe after the fan blades rotate and then is exhausted through the vent holes, the temperature of the condensing pipe can be reduced, oil vapor is condensed when the exhaust pipe exhausts, the scraping ring is driven to move through the second connecting rod when the second air valve moves, and oil on the surface of the condensing pipe can be scraped after the scraping ring moves.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional illustration of a portion of the transmission housing of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2 according to the present invention;

FIG. 4 is a schematic view of the driving box of the present invention;

FIG. 5 is a schematic cross-sectional view of the drive housing of the present invention;

FIG. 6 is a front view of the interior structure of the driving box of the present invention;

FIG. 7 is an enlarged view of the structure of the invention at B in FIG. 5;

FIG. 8 is a schematic view of a rotary tube assembly of the present invention;

FIG. 9 is a cross-sectional structural schematic view of a rotating tube assembly of the present invention;

FIG. 10 is a schematic top cross-sectional view of a rotating tube assembly of the present invention.

In the figure: 1. a transmission assembly; 11. a transmission housing; 12. a power shaft; 13. a drive box; 131. a telescoping assembly; 1311. a bottom tube; 1312. a hoisting ring; 1313. a second spring; 132. rotating the rod; 133. a rotating wheel; 134. rotating the belt; 135. a gear; 14. a drive slot; 141. a drive disc; 142. a first magnetic block; 15. a first base plate; 151. a first air valve; 152. a first spring; 153. a first rotation hole; 154. a rotating tube assembly; 155. an air inlet pipe; 1551. a second air intake hole; 1552. a vent hole; 1553. a fan blade; 1554. a radiating pipe; 156. a condenser tube; 1561. a groove; 1562. a first air intake hole; 157. a drainage tube; 1571. a limiting groove; 1572. a first extrusion tray; 1573. a second magnetic block; 1574. a second extrusion disc; 1575. a first link; 1576. an air pressure tank; 1577. a telescopic rod; 1578. a third spring; 1579. a travel bar; 15791. a second air valve; 15792. a second link; 15793. scraping rings; 16. rotating the tube; 161. a squeegee; 162. a crown gear; 17. a top cover; 171. a triangular block; 172. a limiting post; 18. an exhaust pipe; 19. a second rotation hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.

With reference to fig. 1 and fig. 4-5, the transmission assembly 1 of the present invention includes a transmission housing 11 and a rotatable power shaft 12 disposed at an output end of the transmission housing 11, the rotatable power shaft 12 is capable of transmitting a rotational driving force through rotation of the power shaft 12, an exhaust pipe 18 communicated with an inner cavity of the transmission housing 11 is disposed at one side of an upper end of the transmission housing 11, a first bottom plate 15 is fixedly disposed at a lower edge of an inner cavity wall of the exhaust pipe 18, a first air valve 151 capable of blocking exhaust is disposed at an upper end of the first bottom plate 15 and penetrates downward, a first spring 152 is sleeved at a lower edge of an outer surface of the first air valve 151, and after an air pressure in the inner cavity of the transmission housing 11 reaches a set value of the first spring 152, air in the inner cavity of the transmission housing 11 can be exhausted from the exhaust pipe 18.

The present invention will be further described with reference to the following examples.

Example 1:

referring to fig. 2-9, a driving groove 14 is formed in an inner cavity of the transmission housing 11, a driving disk 141 capable of rotating along with the power shaft 12 is disposed on one side of an outer surface of the power shaft 12 disposed in the inner cavity of the transmission housing 11, first magnetic blocks 142 capable of being magnetically attracted are disposed at equal intervals in a circumferential direction on an edge of the driving disk 141, a driving box 13 vertically opposite to the driving disk 141 is fixedly disposed at an upper end of the transmission housing 11, the driving box 13 is sleeved on an outer surface of the exhaust pipe 18, a top cover 17 capable of moving in a telescopic manner along with air pressure exhaust is sleeved at an upper end opening of the exhaust pipe 18, triangular blocks 171 are disposed at an edge of a lower end opening of the top cover 17 in an annular manner, a limiting column 172 capable of limiting and extending in a telescopic manner is disposed on an inner cavity top surface of the top cover 17 and extending downward to the inner cavity of the exhaust pipe 18, a rotating rotary pipe 16 capable of rotating around an axis of the exhaust pipe 18, a scraper 161 having a sidewall attached to an outer surface of the lower end of the top cover 17 is disposed at an upper end of the rotary pipe 16, and a top end of the top cover 17 is disposed in an annular manner and is in a triangular structure, so that the scraper 161, and the scraper 161 can scrape oil sludge at a connection position where the exhaust pipe 18 and the scraper is connected to push up the top end of the top cover 161 to prevent the exhaust pipe 16 from being blocked, thereby to prevent the exhaust pipe.

The lower extreme edge of rotatory pipe 16 outwards expands and is provided with crown gear 162, and the fixed telescopic component 131 that is provided with a pair of and rotatory pipe 16 coaxial line of inner chamber roof of drive case 13 is a pair of it is provided with rotatable pivoted rotary rod 132 to run through between the telescopic component 131, and rotary rod 132 surface one side end is provided with can be connected with crown gear 162 meshing gear 135, and the fixed swiveling wheel 133 that can drive gear 135 rotation that is provided with in surface middle section of rotary rod 132, and the concave department in surface of swiveling wheel 133 is the ladder shape structure setting.

The telescopic assembly 131 comprises a bottom pipe 1311 fixedly connected with the top wall of the inner cavity of the driving box 13, a telescopic hanging ring 1312 is arranged on the bottom surface of the inner cavity of the bottom pipe 1311 and penetrates through the inner cavity, one side of the outer surface of the hanging ring 1312 is penetrated through by the rotating rod 132, and a second spring 1313 is sleeved on the outer surface of the hanging ring 1312 arranged in the inner cavity of the bottom pipe 1311, so that the gear 135 can be disengaged from the crown gear 162 along with the elastic resilience of the second spring 1313.

One side of the outer surface of the exhaust pipe 18 located in the inner cavity of the driving box 13 is provided with a first rotating hole 153 in a penetrating manner, the inner cavity of the first rotating hole 153 is provided with a rotating pipe assembly 154 capable of rotating and sealing, the rotating pipe assembly 154 comprises a condensation pipe 156 and a drainage pipe 157 arranged at one end of the condensation pipe 156 and capable of conducting the flow of drainage gas, one end of the outer surface of the drainage pipe 157 is fixedly provided with a first extrusion disc 1572, the edge of the first extrusion disc 1572 is provided with a second magnetic block 1573 capable of being magnetically attracted with the first magnetic block 142 in a circumferential equidistant manner, and therefore when the driving disc 141 rotates, the first extrusion disc 1572 can be driven to rotate together through the magnetic attraction.

The outer surface of the rotating wheel 133 and one side of the outer surface of the drainage tube 157 are sleeved with a rotating belt 134, one side of the outer surface of the first extrusion disc 1572 is relatively provided with a second extrusion disc 1574 capable of moving, the upper end of the drainage tube 157 close to one side of the first extrusion disc 1572 is penetrated with a limit groove 1571 capable of telescopic movement, the inner cavity of the drainage tube 157 is provided with an air pressure groove 1576 capable of allowing air to enter, one side of the inner cavity wall of the air pressure groove 1576 is penetrated with a telescopic rod 1577 capable of telescopic movement, one end of the outer surface of the telescopic rod 1577 is fixedly provided with a first connecting rod 1575 to the inner ring wall of the second extrusion disc 1574, the end face of the telescopic rod 1577 far away from the first connecting rod 1575 is extended with a moving rod 1579 with a diameter smaller than that of the telescopic rod 1577, the outer surface of the moving rod 1579 is sleeved with a second air valve 15791 with a diameter matched with the moving rod 1579, a third spring 1578 is arranged between one side of the outer surface of the second air valve 15791 and the inner cavity wall of the air pressure groove 1576, and the elastic force of the third spring 1578 is larger than that the elastic force of the first spring 152, and the condensing tube 156 arranged on one side of the exhaust tube 18 is communicated with the inner cavity 1562 of the inner cavity of the air pressure groove 1576.

The working process comprises the following steps: when the transmission assembly 1 operates, the connecting block drives the second magnetic block 1573 to rotate together through the first magnetic block 142, then the top cover 17 arranged at the upper end of the transmission housing 11 is blocked by oil sludge adhesion, at this time, when the air pressure in the inner cavity of the transmission housing 11 needs to exhaust due to operation, the air can be exhausted through the exhaust pipe 18, when the top cover 17 is blocked, the pressure in the inner cavity of the exhaust pipe 18 rises continuously, then the air pressure can push the second air valve 15791 to move towards one side of the first extrusion disc 1572, the telescopic rod 1577 can be pushed to move after the second air valve 15791 moves, a certain drainage effect can be achieved on the air pressure, after the telescopic rod 1577 moves, the second extrusion disc 1574 moves together, the rotary belt 134 can be extruded after the second extrusion disc 1574 moves, because the first extrusion disc 1572 and the second extrusion disc 1574 are arranged in a ladder-shaped structure, after the rotary belt 134 is extruded, the rotary belt 134 can be pulled downwards through the rotary belt 134, after the rotary rod 132 rotates, the rotary rod can drive the exhaust pipe 1578 to drive the air exhaust pipe to flow through the top cover 161, and the rotary scraper 161 can drive the rotary scraper 162, and the rotary scraper can drive the top cover 162 to carry out the rotary scraper head 162, and then drive the rotary scraper.

Example 2:

referring to fig. 8-10, a second rotation hole 19 is formed through an inner surface of the driving box 13, an air inlet pipe 155 is formed through an inner surface of the second rotation hole 19 at one end of an outer surface of the condenser tube 156, a second air inlet hole 1551 is formed inward at one end of an outer surface of the air inlet pipe 155, a fan 1553 is formed at a bottom surface of an inner cavity of the second air inlet hole 1551, a heat dissipation pipe 1554 having a spiral structure is formed in a direction of the condenser tube 156 at a bottom surface of the inner cavity of the second air inlet hole 1551, and a vent 1552 is formed through a portion of a distal end of the heat dissipation pipe 1554 extending to an outer surface of the air inlet pipe 155.

The upper and lower relative department of condenser 156's surface has seted up recess 1561, and condenser 156's surface cup joints the scraping ring 15793 that can scrape off fluid, and the fixed second connecting rod 15792 that is provided with between the surface one side of scraping ring 15793 to the surface one side of second pneumatic valve 15791, consequently when second pneumatic valve 15791 removed, can drive scraping ring 15793 and together remove, and then scrape off the fluid of condenser 156 surface.

The working process is as follows: when rotatory pipe assembly 154 passes through the rotation that magnetic force lasts, flabellum 1553 that the intake pipe 155 inner chamber set up rotates, rotatory back air current of flabellum 1553 can get into the inner chamber of cooling tube 1554, discharge through air vent 1552 afterwards, and then make the temperature of condenser pipe 156 can descend, and then when exhausting in blast pipe 18, condense oil vapour, and when second pneumatic valve 15791 removed, can drive scraping ring 15793 through second connecting rod 15792 and remove, can scrape off the fluid on condenser pipe 156 surface after scraping ring 15793 removes.

To sum up: in the case of the aluminum magnesium alloy transmission housing capable of exhausting and reducing pressure, when the transmission assembly 1 is operated, the connecting block of the first magnet 142 drives the second magnet 1573 to rotate together, then the top cover 17 arranged at the upper end of the transmission housing 11 is blocked by oil sludge, when the air pressure in the inner cavity of the transmission housing 11 needs to exhaust due to operation, the air can be exhausted through the exhaust pipe 18, when the top cover 17 is blocked, the pressure in the inner cavity of the exhaust pipe 18 rises continuously, then the air pressure can push the second air valve 15791 to move towards one side of the first extrusion disc 1572, after the second air valve 15791 moves, the expansion link 1577 can be pushed to move, after the second extrusion disc 1574 moves, the rotary belt 134 can be extruded, after the second extrusion disc 1577 moves, after the first extrusion disc 2 and the second extrusion disc 1574 are arranged in a ladder-shaped structure, after the rotary belt 134 is extruded, the rotary belt pulls the rotary rod 1553 to move together with the top end of the rotary rod 1552, after the rotary rod 1553, the rotary belt 1552 rotates, the air flow through the top end of the top cover 1552, the rotary scraper 1553, the rotary scraper 1552 drives the rotary scraper 161 to rotate, and the top end of the rotary scraper 1552 to rotate, and the top cover 15517, after the rotary scraper 1552, the rotary scraper 1557, the rotary scraper 161, and the rotary scraper bar 1552, and the rotary scraper 161, after the rotary scraper bar 1552, the rotary scraper 150, the rotary scraper bar 1552, and the rotary scraper bar 1552, the rotary scraper 150, and the rotary scraper bar 1552, after the rotary scraper bar 1552, the rotary scraper can be scraped, and the scraper, and the rotary scraper, after the scraper bar 1552, the scraper, and the scraper can be scraped, and then make the temperature of condenser pipe 156 can drop, and then when exhausting in blast pipe 18, condense vapour, and when second pneumatic valve 15791 moved, can drive scraping ring 15793 through second connecting rod 15792 and remove, can scrape off the fluid on condenser pipe 156 surface after scraping ring 15793 removes.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An aluminum magnesium alloy transmission case capable of exhausting and decompressing comprises a transmission assembly (1), and is characterized in that: the transmission assembly (1) comprises a transmission shell (11) and a power shaft (12) arranged at the output end of the transmission shell (11), a driving groove (14) is formed in the inner cavity of the transmission shell (11), a driving disc (141) capable of rotating along with the power shaft (12) is arranged on one side of the outer surface of the power shaft (12) arranged in the inner cavity of the transmission shell (11), first magnetic blocks (142) capable of being magnetically adsorbed are arranged on the edge of the driving disc (141) in the circumferential direction at equal intervals, an exhaust pipe (18) communicated with the inner cavity of the transmission shell (11) is arranged on one side of the upper end of the transmission shell (11), a driving box (13) is fixedly arranged at the upper end of the transmission shell (11), and the drive box (13) is sleeved on the outer surface of the exhaust pipe (18), the top cover (17) is sleeved at the opening of the upper end of the exhaust pipe (18), the edge of the opening of the lower end of the top cover (17) is provided with a triangular block (171), the inner cavity of the top cover (17) extends downwards to the exhaust pipe (18) is provided with a spacing telescopic spacing column (172), a rotating pipe (16) is arranged around the axis of the exhaust pipe (18), the upper end of the rotating pipe (16) extends upwards to the lower end of the top cover (17) and is provided with a scraper (161) with a side wall attached to the outer surface of the exhaust pipe (18), and the top end of the scraper (161) is of a triangular structure.

2. An aluminum magnesium alloy transmission case capable of exhausting and decompressing according to claim 1, characterized in that: crown gear (162) are arranged at the lower end edge of rotating pipe (16), telescopic assemblies (131) are fixedly arranged on the top wall of the inner cavity of driving box (13), a pair of telescopic assemblies (131) are arranged between every two adjacent telescopic assemblies (131) in a penetrating mode, gears (135) which can be meshed with the crown gear (162) are arranged at the tail ends of one side of the outer surface of each rotary rod (132), rotating wheels (133) capable of driving gears (135) to rotate are fixedly arranged in the middle sections of the outer surfaces of the rotary rods (132), and the inner concave portions of the outer surfaces of the rotating wheels (133) are in a trapezoidal structure.

3. An exhaust decompression aluminum magnesium alloy transmission case according to claim 2, wherein: the telescopic assembly (131) comprises a bottom pipe (1311) fixedly connected with the top wall of the inner cavity of the driving box (13), a hanging ring (1312) penetrates through the bottom surface of the inner cavity of the bottom pipe (1311) to the inner cavity, one side of the outer surface of the hanging ring (1312) is penetrated through by a rotating rod (132), and a second spring (1313) is sleeved on the outer surface of the hanging ring (1312).

4. An aluminum magnesium alloy transmission case capable of exhausting and decompressing according to claim 3, wherein: one side of the outer surface of an exhaust pipe (18) arranged in the inner cavity of a driving box (13) is provided with a first rotating hole (153) in a penetrating mode, the inner cavity of the first rotating hole (153) is provided with a rotating pipe assembly (154), the rotating pipe assembly (154) comprises a condensation pipe (156) and a drainage pipe (157) arranged at one end of the condensation pipe (156), one end of the outer surface of the drainage pipe (157) is fixedly provided with a first extrusion disc (1572), and second magnetic blocks (1573) capable of being magnetically attracted with the first magnetic blocks (142) are arranged on the edge of the first extrusion disc (1572) in the circumferential direction in an equidistant mode.

5. An exhaust decompression aluminum magnesium alloy transmission case according to claim 4, wherein: the outer surface of the rotating wheel (133) and one side of the outer surface of the drainage tube (157) are sleeved with a rotating belt (134), one side of the outer surface of the first extrusion disc (1572) is relatively provided with a second extrusion disc (1574), the upper end of the drainage tube (157) close to one side of the first extrusion disc (1572) penetrates through a limiting groove (1571), and an inner cavity of the drainage tube (157) is provided with an air pressure groove (1576).

6. An aluminum magnesium alloy transmission case capable of exhausting and decompressing according to claim 5, characterized in that: an expansion link (1577) penetrates through one side of the inner cavity wall of the pneumatic groove (1576), a first connecting rod (1575) is arranged from one end of the outer surface of the expansion link (1577) to the inner ring wall of the second extrusion disc (1574), a moving rod (1579) extends from the end face, away from the first connecting rod (1575), of the expansion link (1577), a second air valve (15791) is sleeved on the outer surface of the moving rod (1579), a third spring (1578) is arranged between one side of the outer surface of the second air valve (15791) and the inner cavity wall of the pneumatic groove (1576), the elasticity of the third spring (1578) is larger than that of the first spring (152), and a first air inlet hole (1562) communicated with the inner cavity of the pneumatic groove (1576) is formed in one side of the outer surface of the condensation pipe (156).

7. An aluminum magnesium alloy transmission case capable of exhausting and decompressing according to claim 6, characterized in that: one side of the outer surface of the driving box (13) penetrates through the inner cavity and is provided with a second rotating hole (19), one end of the outer surface of the condensation pipe (156) penetrates through the inner cavity of the second rotating hole (19) and is provided with an air inlet pipe (155), one end of the outer surface of the air inlet pipe (155) is inwards provided with a second air inlet hole (1551), and the bottom surface of the inner cavity of the second air inlet hole (1551) is provided with fan blades (1553).

8. An exhaust decompression aluminum magnesium alloy transmission case according to claim 7, wherein: the bottom surface of the inner cavity of the second air inlet hole (1551) is provided with a radiating pipe (1554) towards the direction of the condensing pipe (156), and the tail end of the radiating pipe (1554) extends to one side of the outer surface of the air inlet pipe (155) and is provided with a vent hole (1552) in a penetrating mode.

9. An exhaust decompression aluminum magnesium alloy transmission case according to claim 8, wherein: the upper and lower opposite positions of the outer surface of the condensation pipe (156) are provided with grooves (1561), the outer surface of the condensation pipe (156) is sleeved with a scraping ring (15793), and a second connecting rod (15792) is fixedly arranged between one side of the outer surface of the scraping ring (15793) and one side of the outer surface of the second air valve (15791).

10. An exhaust decompression aluminum magnesium alloy transmission case according to claim 9, wherein: the lower edge of the inner cavity wall of the exhaust pipe (18) is fixedly provided with a first bottom plate (15), the upper end of the first bottom plate (15) is provided with a first air valve (151) in a downward penetrating mode, and the lower edge of the outer surface of the first air valve (151) is sleeved with a first spring (152).