CN117249207A - Wheel-side speed reducer assembly of front-drive steering axle of heavy-duty car - Google Patents

Wheel-side speed reducer assembly of front-drive steering axle of heavy-duty car Download PDF

Info

Publication number
CN117249207A
CN117249207A CN202311293189.3A CN202311293189A CN117249207A CN 117249207 A CN117249207 A CN 117249207A CN 202311293189 A CN202311293189 A CN 202311293189A CN 117249207 A CN117249207 A CN 117249207A
Authority
CN
China
Prior art keywords
wheel
mounting groove
pin shaft
groove
heavy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311293189.3A
Other languages
Chinese (zh)
Inventor
李兆杰
李进
聂巧丽
汪丽敏
王子龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fangsheng Axle Hefei Co ltd
Original Assignee
Fangsheng Axle Hefei Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fangsheng Axle Hefei Co ltd filed Critical Fangsheng Axle Hefei Co ltd
Priority to CN202311293189.3A priority Critical patent/CN117249207A/en
Publication of CN117249207A publication Critical patent/CN117249207A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F16H2057/085—Bearings for orbital gears

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Power Steering Mechanism (AREA)

Abstract

The invention discloses a wheel-side speed reducer assembly of a heavy-duty car front-drive steering axle, which comprises a speed reducer shell, wherein a plurality of circumferentially distributed mounting grooves are formed in the speed reducer shell, and a first screw hole is formed in the bottom of each mounting groove; a bolt-shaped pin shaft is arranged in each mounting groove, the head of the pin shaft is clamped in the mounting groove, the tail end of the pin body is positioned at the bottom of the mounting groove, a second screw hole which corresponds to the first screw hole and is matched with the screw thread is formed in the tail end of the pin lifting end of the pin shaft, and screws are arranged in the corresponding first screw hole and second screw hole in a threaded connection mode; a needle roller assembly is arranged on the bolt body of the pin shaft, and a planet wheel is arranged outside the needle roller assembly; the speed reducer shell is integrated, has smaller volume and narrow width, and is convenient for the steering of the bridge; the whole structure of the pin shaft after installation is compact and ingenious, the pin shaft is used as a planetary wheel shaft to be placed in the groove for fixing, and the rotation stability of the planetary wheel is guaranteed.

Description

Wheel-side speed reducer assembly of front-drive steering axle of heavy-duty car
Technical Field
The invention relates to the technical field of reducers, in particular to a wheel-side reducer assembly of a front-drive steering axle of a heavy-duty car.
Background
The speed reducer plays a role in matching the rotating speed and transmitting the torque between the prime motor and the working machine or the actuating mechanism, and is a relatively precise machine. Its purpose is to reduce the rotational speed and increase the torque. It is of various kinds and types and has different uses, among which it can be classified into a gear reducer, a worm reducer and a planetary gear reducer according to the type of transmission.
In the wheel-side speed-reducing bipolar speed-reducing precursor bridge with single tire, the strict requirement on the whole bridge width is provided, the narrower the requirement on the wheel-side speed reducer assembly is, the better the steering of the bridge is facilitated, and the planetary gear speed reducer is used. In the prior art, the shell of the speed reducer is assembled, the structure is not compact enough, the size is large, the steering of the axle is limited to a certain extent, the axle of the planet wheel is easy to loosen, and the unstable rotation of the planet wheel is easy to cause.
Disclosure of Invention
The invention aims to provide a wheel-side speed reducer assembly of a front-drive steering axle of a heavy-duty car, which solves the following technical problems:
how to improve the space utilization of the speed reducer shell and reduce the whole volume of the shell.
The aim of the invention can be achieved by the following technical scheme:
the wheel-side speed reducer assembly of the front steering axle of the heavy-duty car comprises a speed reducer shell, wherein a plurality of circumferentially distributed mounting grooves are formed in the speed reducer shell, and a first screw hole is formed in the bottom of each mounting groove; a bolt-shaped pin shaft is arranged in each mounting groove, the head of the pin shaft is clamped in the mounting groove, the tail end of the pin body is positioned at the bottom of the mounting groove, a second screw hole which corresponds to the first screw hole and is matched with the screw thread is formed in the tail end of the pin lifting end of the pin shaft, and screws are arranged in the corresponding first screw hole and second screw hole in a threaded connection mode; the pin body of the pin shaft is provided with a needle roller assembly, and the outside of the needle roller assembly is provided with a planet wheel.
In a further aspect of the invention: an annular gap is arranged at the top end of the mounting groove, and an O-shaped ring is arranged on the annular gap.
In a further aspect of the invention: washers are arranged on the upper side and the lower side of the planet wheel.
In a further aspect of the invention: the inner side and the outer side of the mounting groove are provided with groove-free walls, the edge of the inner side of the head of the pin shaft is provided with a crescent notch, and the crescent notch is positioned at the groove-free wall of the inner side of the mounting groove.
In a further aspect of the invention: the bottom of the bolt body of the pin shaft is provided with a groove, and the second screw hole is formed in the groove; the shape of the bottom of the mounting groove is matched with that of the groove, the pin shaft is clamped at the bottom of the mounting groove through the groove, and the depth of the groove is identical to the thickness of the bottom of the mounting groove.
In a further aspect of the invention: an annular pressing block is arranged on the outer side of the bottoms of the mounting grooves, third screw holes corresponding to the first screw holes one by one are formed in the annular pressing block, and screws penetrate through the third screw holes and the second screw holes.
In a further aspect of the invention: and each planet wheel is provided with a plurality of oil inlet holes.
In a further aspect of the invention: the speed reducer shell is provided with a plurality of oil filling holes, and a sealing cover is arranged in each oil filling hole.
In a further aspect of the invention: and a sealing ring is arranged on the sealing cover in a matched manner and is used for enhancing the tightness of the oil filling hole.
The invention has the beneficial effects that:
the speed reducer shell is integrated, has smaller volume and narrow width, and is convenient for the steering of the bridge; the whole structure of the pin shaft after installation is compact and ingenious, the pin shaft is used as a planetary wheel shaft to be placed in the groove for fixing, and the rotation stability of the planetary wheel is ensured; the annular pressing block is arranged outside the mounting groove to prevent the pin shaft from rotating, meanwhile, the needle roller assembly is adopted to enable gaps between the planet wheel and the pin body of the pin shaft to be smaller, the diameter of the pin body of the pin shaft is increased, and meanwhile, the thickness between the inner wall of a planet wheel hole and the bottom diameter of the following tooth is also increased, so that the strength of the planet wheel and the pin shaft is increased.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of another angle of an embodiment of the present invention;
FIG. 3 is a front view of one embodiment of the invention at the angle of FIG. 2;
FIG. 4 is a schematic view of an embodiment of the present invention with the pins removed from the view of FIG. 3;
FIG. 5 is an exploded view of one embodiment of the present invention;
FIG. 6 is a schematic diagram of the structure of a reducer housing in an embodiment of the invention;
FIG. 7 is a schematic view of a planetary and needle assembly according to an embodiment of the present invention;
fig. 8 is a schematic structural view of a pin according to an embodiment of the present invention.
In the figure: 100. a speed reducer housing; 101. a mounting groove; 102. a first screw hole; 103. an annular gap; 200. a pin shaft; 201. a groove; 202. a second screw hole; 203. crescent notch; 300. a planet wheel; 400. a needle roller assembly; 500. a gasket; 600. an O-ring; 700. an annular pressing block; 701. a third screw hole; 800. a screw; 900. a cover; 901. and (3) sealing rings.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-8, the invention discloses a wheel-side speed reducer assembly for a steering axle of a heavy-duty car, which comprises a speed reducer shell 100, wherein the whole speed reducer shell 100 is circular, the speed reducer shell 100 is provided with a plurality of circumferentially distributed mounting grooves 101 around the center of a circle of the speed reducer shell, and a first screw hole 102 is formed in the bottom of each mounting groove 101; through holes are formed on the two opposite sides of the mounting groove 101 to form a groove-free wall; the through hole extends to the bottom of the mounting groove 101, so that only a bottom plate with a certain width is reserved at the bottom of the mounting groove 101, and the first screw hole 102 is formed in the bottom plate.
Each mounting groove 101 is internally provided with a bolt-shaped pin shaft 200, the head of each pin shaft 200 is clamped in each mounting groove 101, the tail end of each pin body is positioned at the bottom of each mounting groove 101, the tail end of each pin body of each pin shaft 200 is provided with a groove 201 matched with the bottom of each mounting groove 101 in shape, the parts of each groove 201 extend inwards of the corresponding pin body to form second screw holes 202, the grooves 201 are just clamped in the bottoms of the mounting grooves 101, the second screw holes 202 correspond to the first screw holes 102 at the bottoms of the mounting grooves 101, the outer sides of the bottoms of the mounting grooves 101 are provided with annular grooves, annular pressing blocks 700 are arranged in the annular pressing blocks 700, a plurality of third screw holes 701 corresponding to the first screw holes 102 one by one are formed in the annular pressing blocks 700, the third screw holes 701, the first screw holes 102 are aligned with the third screw holes 202, and screws 800 are arranged in the three holes in a penetrating mode and are used for fixedly connecting the annular pressing blocks 700, the pin shafts 200 and the reducer casing 100.
The pin body of the pin shaft 200 is sleeved with the needle roller assembly 400, the outer part of the needle roller assembly 400 is sleeved with the planet gears 300, the planet gears 300 are positioned in the mounting groove 101, each planet gear 300 is communicated with the outer part of the mounting groove 101 because no groove wall is arranged on the inner side and the outer side of the mounting groove 101, the groove depth of the mounting groove 101 only needs to meet the space capable of accommodating the planet gears 300, and therefore the overall thickness of the speed reducer shell 100 is small; the edge of the inner side of the head of the pin shaft 200 is provided with a crescent notch 203, and the crescent notch 203 is positioned at the non-groove wall of the inner side of the installation groove 101 and is used for providing space for the installation of the sun gear and avoiding the obstruction to the sun gear.
Specifically, the reducer housing 100 is integrated, has smaller volume and narrow width, and is convenient for steering the bridge; the whole structure of the pin shaft 200 after installation is compact and ingenious, the pin shaft 200 is used as a planetary wheel shaft to be placed in a groove for fixing, and the rotation stability of the planetary wheel is ensured; the annular pressing block 700 is arranged outside the mounting groove 101 to prevent the pin shaft 200 from rotating, meanwhile, the needle roller assembly 400 is adopted to enable a gap between the planet wheel 300 and the pin body of the pin shaft 200 to be smaller, the diameter of the pin body of the pin shaft 200 is increased, meanwhile, the thickness between the inner wall of a hole of the planet wheel 300 and the bottom diameter of the following teeth is also increased, and the strength of the planet wheel 300 and the pin shaft 200 is increased.
Further, the speed reducer housing 100 is provided with an oil filling hole, and a sealing cover 900 is arranged in the oil filling hole; a sealing ring 901 is arranged on the sealing cover 900 in a matching way, so as to enhance the tightness of the oil filling hole; an annular gap 103 is formed in the top end of the mounting groove 101 in a circle, an O-shaped ring 600 is arranged on the annular gap 103, and when the pin shaft 200 is inserted into the mounting groove 101, the pin shaft 200 is in matched contact with a bolt body of the O-shaped ring 600, so that oil can be prevented from flowing out from a gap between the pin shaft 200 and the mounting groove 101; the planet wheel 300 is provided with three oil inlet holes, and lubricating oil enters the needle roller assembly 400 through the oil inlet holes after entering the reducer shell 100, so that lubrication of the needle roller assembly 400 can be ensured; the washers 500 are disposed on the upper and lower sides of the planetary gear 300, so that abrasion to the reducer housing 100 can be reduced, and the service life of the reducer housing 100 can be prolonged.
The working principle of the invention is as follows:
the reducer housing 100 is integrated, has smaller volume and narrow width, and is convenient for steering the bridge; the whole structure of the pin shaft 200 after installation is compact and ingenious, the pin shaft 200 is used as a planetary wheel shaft to be placed in a groove for fixing, and the rotation stability of the planetary wheel is ensured; the annular pressing block 700 is arranged at the outer side of the mounting groove 101 to prevent the pin shaft 200 from rotating, meanwhile, the needle roller assembly 400 is adopted to enable a gap between the planet wheel 300 and a bolt body of the pin shaft 200 to be smaller, the diameter of the bolt body of the pin shaft 200 is increased, and meanwhile, the thickness between the inner wall of a hole of the planet wheel 300 and the bottom diameter of a tooth following is also increased, so that the strength of the planet wheel 300 and the pin shaft 200 is increased;
in summary, the assembly structure is integrated, so that the overall volume is reduced, the thickness of the reducer housing 100 is reduced, the strength of the reducer housing 100 and the planetary gears 300 is improved on the basis, the stability of the planetary gears 300 in the use process is enhanced, and the service life of the assembly structure is prolonged.
In the description of the present invention, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and for simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, as well as a specific orientation configuration and operation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.

Claims (9)

1. The wheel-side speed reducer assembly of the front-drive steering axle of the heavy-duty car comprises a speed reducer shell (100), and is characterized in that the speed reducer shell (100) is provided with a plurality of circumferentially distributed mounting grooves (101), and a first screw hole (102) is formed in the bottom of each mounting groove (101); a bolt-shaped pin shaft (200) is arranged in each mounting groove (101), the head of each pin shaft (200) is clamped in each mounting groove (101), the tail end of each pin body is positioned at the bottom of each mounting groove (101), a second screw hole (202) which corresponds to the first screw hole (102) and is matched with the corresponding screw thread is formed in the tail end of each pin shaft (200), and screws (800) are arranged in the corresponding first screw holes (102) and the corresponding second screw holes (202) in a threaded connection mode; the pin body of the pin shaft (200) is provided with a needle roller assembly (400), and the outer part of the needle roller assembly (400) is provided with a planet wheel (300).
2. The wheel-side reducer assembly of the front-drive steering axle of the heavy-duty car according to claim 1, wherein an annular gap (103) is arranged at the top end of the mounting groove (101), and an O-shaped ring (600) is arranged on the annular gap (103).
3. The wheel-side reducer assembly for the front-drive steering axle of the heavy-duty car according to claim 1, wherein washers (500) are arranged on the upper side and the lower side of the planetary wheel (300).
4. The wheel-side reducer assembly of the front-drive steering axle of the heavy-duty car according to claim 1, wherein the inner side and the outer side of the mounting groove (101) are provided with groove-free walls, the inner edge of the head of the pin shaft (200) is provided with a crescent notch (203), and the crescent notch (203) is positioned at the groove-free wall of the inner side of the mounting groove (101).
5. The wheel-side reducer assembly of the front-drive steering axle of the heavy-duty car according to claim 4, wherein the bottom of the bolt body of the pin shaft (200) is provided with a groove (201), and the second screw hole (202) is provided in the groove (201); the shape of the bottom of the mounting groove (101) is matched with the shape of the groove (201), the pin shaft (200) is clamped at the bottom of the mounting groove (101) through the groove (201), and the depth of the groove (201) is the same as the thickness of the bottom of the mounting groove (101).
6. The wheel-side reducer assembly of the front-drive steering axle of the heavy-duty car according to claim 1, wherein an annular pressing block (700) is installed at the outer side of the bottoms of the plurality of mounting grooves (101), third screw holes (701) which are in one-to-one correspondence with the first screw holes (102) are formed in the annular pressing block (700), and screws (800) penetrate through the third screw holes (701) and the second screw holes (202).
7. The wheel-side reducer assembly of the front-drive steering axle of the heavy-duty car according to claim 1, wherein a plurality of oil inlet holes are formed in each planet wheel (300).
8. The wheel-side speed reducer assembly for the front-drive steering axle of the heavy-duty car according to claim 1, wherein a plurality of oil filling holes are formed in the speed reducer housing (100), and a sealing cover (900) is arranged in the oil filling holes.
9. The wheel-side reducer assembly of the front-drive steering axle of the heavy-duty car according to claim 8, wherein a sealing ring (901) is arranged on the sealing cover (900) in a matched manner, so as to enhance the tightness of the oil filling hole.
CN202311293189.3A 2023-10-08 2023-10-08 Wheel-side speed reducer assembly of front-drive steering axle of heavy-duty car Pending CN117249207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311293189.3A CN117249207A (en) 2023-10-08 2023-10-08 Wheel-side speed reducer assembly of front-drive steering axle of heavy-duty car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311293189.3A CN117249207A (en) 2023-10-08 2023-10-08 Wheel-side speed reducer assembly of front-drive steering axle of heavy-duty car

Publications (1)

Publication Number Publication Date
CN117249207A true CN117249207A (en) 2023-12-19

Family

ID=89127623

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311293189.3A Pending CN117249207A (en) 2023-10-08 2023-10-08 Wheel-side speed reducer assembly of front-drive steering axle of heavy-duty car

Country Status (1)

Country Link
CN (1) CN117249207A (en)

Similar Documents

Publication Publication Date Title
US5302158A (en) Lubricant pumping in tandem drive axles
CN214367583U (en) Differential mechanism assembly and drive axle
CN117249207A (en) Wheel-side speed reducer assembly of front-drive steering axle of heavy-duty car
GB2396385A (en) Dual ported gerotor fuel pump
CN110966371A (en) Differential mechanism, drive axle with same and vehicle
CN201225279Y (en) Cycloid gear pump of automatic speed variator
CN214092935U (en) Inter-axle differential and through bridge assembly
CN100504063C (en) Pore-pin type cycloid rotor motor
CN110962505B (en) Drive axle and vehicle with same
CN221170636U (en) Differential, speed reducer, drive assembly and vehicle
CN112555383B (en) Differential mechanism assembly
CN218408397U (en) Differential gear
CN215214624U (en) Differential mechanism and vehicle with same
CN220540273U (en) Lubricating assembly for differential mechanism, power assembly and vehicle
CN215990475U (en) Motor assembly
CN216886096U (en) End connection installation mechanism of belt wheel edge speed reduction drive axle
CN220850668U (en) Split input shaft fully-sealed RV reducer
CN113958681A (en) Large helical angle gear type limited slip differential
CN220629091U (en) Driving mechanism and floor washing machine
CN217206718U (en) Novel cycloid hydraulic motor
CN201982944U (en) Oil pump assembly
CN220168486U (en) Inter-axle differential housing assembly with herringbone axle
CN219911674U (en) Low-noise gear shaft assembly
CN212643494U (en) Durable gear transmission assembly
CN218235458U (en) Piston pump

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination