CN107191267B - Gear chamber - Google Patents
Gear chamber Download PDFInfo
- Publication number
- CN107191267B CN107191267B CN201710571754.6A CN201710571754A CN107191267B CN 107191267 B CN107191267 B CN 107191267B CN 201710571754 A CN201710571754 A CN 201710571754A CN 107191267 B CN107191267 B CN 107191267B
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- CN
- China
- Prior art keywords
- water pump
- gear
- gear chamber
- water
- shell
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/06—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
- F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
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- 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
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- 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
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- 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
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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- 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
- F16H2057/0203—Gearboxes; Mounting gearing therein the gearbox is associated or combined with a crank case of an engine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
The invention discloses a gear chamber, comprising: the gear chamber shell is internally provided with a crank gear, a bearing mounting hole is formed in the width direction of the gear chamber shell, a water pump shell is integrated on the gear chamber shell at one side of the bearing mounting hole, and a water pump cavity is formed in the water pump shell; and a water pump assembly, comprising: a water pump shaft disposed in the bearing mounting hole across the gear chamber housing; the water pump impeller is arranged at one end of the water pump shaft and extends into the water pump shell; the water pump gear is arranged on the water pump shaft and is driven by the crank gear through the gear; and the water pump belt pulley is connected to the other end of the water pump shaft, is positioned at the outer side of the gear chamber shell and is used as a power source for driving the accessory belt pulley. The gear chamber makes the drive train more compact and reduces the length of the machine body.
Description
Technical Field
The invention relates to the field of engines, in particular to a gear chamber.
Background
The basic function of a conventional gear chamber cover is to keep the inside of the gear chamber clean and prevent dirt from entering. Meanwhile, the sealing function is achieved, and lubricating oil in the gear chamber is prevented from exuding. With increasing demands for miniaturization, light weight, high integration, NVH, external appearance, etc. of engines, particularly for V-type engines, gear chamber covers are required to meet the demands for miniaturization, light weight, multi-functional integration due to limitations in structure and arrangement. The basic function of conventional gear chamber covers has far from satisfying the development of engines.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide a gear chamber, which enables a belt transmission system to be more compact and reduces the length of a machine body.
To achieve the above object, the present invention provides a gear chamber comprising: the gear chamber shell is internally provided with a crank gear, a bearing mounting hole is formed in the width direction of the gear chamber shell, a water pump shell is integrated on the gear chamber shell at one side of the bearing mounting hole, and a water pump cavity is formed in the water pump shell; and a water pump assembly, comprising: a water pump shaft disposed in the bearing mounting hole across the gear chamber housing; the water pump impeller is arranged at one end of the water pump shaft and extends into the water pump shell; the water pump gear is arranged on the water pump shaft and is driven by the crank gear through the gear; and the water pump belt pulley is connected to the other end of the water pump shaft, is positioned at the outer side of the gear chamber shell and is used as a power source for driving the accessory belt pulley.
Preferably, the gear chamber shell on one side of the bearing mounting hole is provided with a protruding part, the protruding part is provided with a mounting end face, the mounting end face is provided with an inner concave cavity, the mounting end face is provided with a water pump cover, and the water pump cover and the inner concave cavity enclose a water pump cavity.
Preferably, the water pump shaft passes through the bulge, and a water seal is arranged on the water pump shaft passing through the bulge.
Preferably, the water pump shaft is arranged in the bearing mounting hole through a bearing, and oil seals are respectively arranged on the water pump shafts at two ends of the bearing.
Preferably, a gap is arranged between the oil seal and the water seal, which are close to one side of the water seal, and a water drain hole communicated with the gap is arranged on the protruding part.
Preferably, the outside of the water pump cover is provided with a body water inlet which is communicated with the water outlet end of the water pump cavity.
Preferably, the other end of the water pump shaft is provided with a conical section, the mounting hole of the water pump gear is a conical hole, the water pump gear is sleeved on the conical section, the end of the water pump shaft is provided with a nut, and the nut is used for locking the water pump gear on the conical section.
Preferably, the water pump gear is provided with a shaft diameter section, a counter bore for accommodating a nut is formed in the shaft diameter section, a cover plate is arranged on the gear chamber shell at one side of the water pump gear, the shaft diameter section penetrates through the cover plate, and a sealing ring is arranged on the shaft diameter section penetrating through the cover plate.
Preferably, the water pump pulley is fixed on the end face of the shaft diameter section through bolts.
Preferably, a water inlet connector of a water pump is arranged on a gear chamber shell at one side of a water pump belt pulley and is communicated with a water pump cavity, the water inlet connector of the water pump is communicated with the gear chamber shell, a water return port of the machine body is arranged at the top of the gear chamber shell, a thermostat is arranged on the gear chamber shell at the other side of the water pump belt pulley, a large circulation water outlet is arranged on the gear chamber shell at the other side of the thermostat and is communicated with the water pump cavity through a radiator, a small circulation water inlet of the thermostat is communicated with the gear chamber shell, and the thermostat is used for regulating cooling water from the water return port of the machine body to enter the large circulation water outlet or enter the water pump cavity through the small circulation water inlet.
Compared with the prior art, the invention has the following beneficial effects: the traditional water pump driving mode is changed by arranging the water pump gear on the water pump shaft, namely, the water pump is driven to work by the crank gear. Meanwhile, the water pump belt pulley synchronously rotates along with the water pump gear, the water pump belt pulley can be used as a power source for driving accessories by a belt, a crank pulley can be omitted, a belt transmission system can be more compact, and the length of a machine body is reduced.
Drawings
FIG. 1 is a front end schematic view of a gear chamber according to the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view B-B of FIG. 1;
FIG. 4 is a front end schematic view of a gear chamber housing of the gear chamber according to the present invention;
FIG. 5 is a rear end schematic view of a gear chamber housing of the gear chamber according to the present invention;
fig. 6 is a C-C cross-sectional view of fig. 5.
Detailed Description
The following detailed description of embodiments of the invention is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.
As shown in fig. 1 to 6, a gear chamber according to an embodiment of the present invention includes a gear chamber housing 1 and a water pump assembly, wherein a crank gear 13 is installed in the gear chamber housing 1, a bearing mounting hole 101 (see fig. 6) is provided along a width direction of the gear chamber housing 1, a water pump housing is integrated in the gear chamber housing 1 at one side of the bearing mounting hole 101, and a water pump chamber b (see fig. 3) is provided in the water pump housing. The water pump assembly comprises a water pump shaft 21, a water pump impeller 23, a water pump gear 24 and a water pump belt pulley 25, wherein the water pump shaft 21 is arranged in a bearing mounting hole 101 transversely across the gear chamber shell 1, the water pump impeller 23 is arranged at one end of the water pump shaft 21, the water pump impeller 23 stretches into the water pump shell, the water pump gear 24 is arranged on the water pump shaft 21, the water pump gear 24 is driven by a crank gear 13 through a gear (in the embodiment, the crank gear 13 is driven by a machine body idler gear 14 and the water pump idler gear 15, the machine body idler gear 14 is arranged on the machine body, the water pump idler gear 15 is arranged on the gear chamber shell 1), the water pump belt pulley 25 is connected to the other end of the water pump shaft 21, the water pump belt pulley 25 is arranged on the outer side of the gear chamber shell 1, and the water pump belt pulley 25 is used as a power source for driving accessory belt pulleys.
As a preferred embodiment, the gear chamber housing 1 on one side of the bearing mounting hole 101 is provided with a protruding portion 102 (see fig. 6), the protruding portion 102 is provided with a mounting end surface having an inner cavity thereon, the mounting end surface is provided with a water pump cover 11, and the water pump cover 11 and the inner cavity enclose a water pump cavity b.
As a preferred embodiment, the water pump shaft 21 passes through the protrusion 102, and a water seal is provided on the water pump shaft 21 passing through the protrusion 102.
As a preferred embodiment, the water pump shaft 21 is mounted in the bearing mounting hole 101 through the bearing 22, and oil seals are respectively provided on the water pump shaft 21 at both ends of the bearing 22.
As a preferred embodiment, a gap is formed between the oil seal and the water seal near one side of the water seal, and the protrusion 102 is provided with a drain hole 16 communicating with the gap.
As a preferred embodiment, the outer side of the water pump cover 11 is provided with a body water inlet 111, and the body water inlet 11 is communicated with the water outlet end of the water pump cavity b.
As a preferred embodiment, the other end of the water pump shaft 21 is provided with a conical section, the mounting hole of the water pump gear 24 is a conical hole, the water pump gear 24 is sleeved on the conical section, and the end of the water pump shaft 21 is provided with a nut which is used for locking the water pump gear 24 on the conical section.
As a preferred embodiment, the pump gear 24 has a shaft diameter section, the inside of the shaft diameter section has a counter bore for accommodating a nut, the gear chamber housing 1 on one side of the pump gear 24 is provided with a cover plate 12, the shaft diameter section passes through the cover plate 12, and the shaft diameter section passing through the cover plate 12 is provided with a sealing ring.
As a preferred embodiment, the water pump pulley 25 is fixed to the end face of the shaft diameter section by bolts.
As a preferred embodiment, a water inlet port 5 of a water pump is arranged on a gear chamber shell on one side of a water pump belt pulley 24, the water inlet port 5 of the water pump is communicated with a water pump cavity b through the gear chamber shell 1, a water return port 7 of the water pump is arranged at the top of the gear chamber shell 1, a thermostat is arranged on the gear chamber shell 1 on the other side of the water pump belt pulley 25, a large circulation water outlet 6 is arranged on the gear chamber shell 1 on the other side of the thermostat, the large circulation water outlet 6 is communicated with the water pump cavity b through a radiator, a small circulation water inlet of the thermostat is communicated with the water pump shell b through the water pump shell, and the thermostat is used for regulating cooling water from the water return port 7 of the water pump to enter the large circulation water outlet 6 or enter the water pump cavity through the small circulation water inlet.
With reference to fig. 3, the working principle of the water pump and the temperature regulator of the present embodiment is described as follows:
cooling water of the water tank of the engine body enters the water inlet connector 5 of the water pump through the connecting pipe, the cooling water enters the water pump cavity b from the area a through the water inlet connector 5 of the water pump, and then the cooling water enters the engine after flowing out of the water inlet 111 of the engine body through the rotation, pressurization and acceleration of the water pump impeller 23. The water after the engine is cooled enters the thermostat seat from the area e through the body water return port 7, the small circulation flows into the water pump cavity b from the area c, and the large circulation flows out of the large circulation water outlet 6 from the area d and enters the radiator.
In addition, the gear chamber of the present embodiment may also integrate the oil pump mounting boss 3, the camshaft sensor mounting boss 4, the motor housing mounting boss 8, and the steering pump mounting boss 9.
In summary, in the gear chamber of the embodiment, the conventional driving mode of the water pump is changed by arranging the water pump gear on the water pump shaft, that is, the water pump is driven to work by the crank gear. Meanwhile, the water pump belt pulley synchronously rotates along with the water pump gear, the water pump belt pulley can be used as a power source for driving accessories by using a belt, the traditional mode is that the crank belt pulley is used as a driving wheel, other accessory belt pulleys are used as driven wheels, the water pump belt pulley is used as the driving wheel, and other accessory belt pulleys are driven wheels, so that the belt transmission system is more compact. In addition, because the front end of the crankshaft is provided with the motor and other accessories, if the crankshaft pulley drives other belt pulley accessories, the front end of the engine body is lengthened, so that the engine body is driven by the water pump belt pulley, the crankshaft pulley can be omitted, and the engine body length is reduced.
The foregoing descriptions of specific exemplary embodiments of the present invention are presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (5)
1. A gear chamber, comprising:
the gear chamber shell is internally provided with a crank gear, a bearing mounting hole is formed in the width direction of the gear chamber shell, a water pump shell is integrated on the gear chamber shell at one side of the bearing mounting hole, and a water pump cavity is formed in the water pump shell; and
a water pump assembly, comprising:
a water pump shaft disposed within the bearing mounting bore traversing the gear chamber housing;
the water pump impeller is arranged at one end of the water pump shaft and stretches into the water pump shell;
a water pump gear mounted on the water pump shaft, the water pump gear being driven by the crank gear through a gear; and
the water pump belt pulley is connected to the other end of the water pump shaft, is positioned on the outer side of the gear chamber shell and is used as a power source for driving the accessory belt pulley;
the other end of the water pump shaft is provided with a conical section, the mounting hole of the water pump gear is a conical hole, the water pump gear is sleeved on the conical section, the end of the water pump shaft is provided with a nut, and the nut is used for locking the water pump gear on the conical section; the water pump gear is provided with a shaft diameter section, a counter bore for accommodating the nut is formed in the shaft diameter section, a cover plate is arranged on a gear chamber shell at one side of the water pump gear, the shaft diameter section penetrates through the cover plate, and a sealing ring is arranged on the shaft diameter section penetrating through the cover plate; the water pump belt pulley is fixed on the end face of the shaft diameter section through a bolt; a water inlet connector of a water pump is arranged on the gear chamber shell at one side of the water pump belt pulley and is communicated with the water pump cavity, the water inlet connector of the water pump penetrates through the gear chamber shell and is communicated with the water pump cavity, a water return port of the water pump is arranged at the top of the gear chamber shell, a thermostat is arranged on the gear chamber shell at the other side of the water pump belt pulley, a large circulation water outlet is arranged on the gear chamber shell at the other side of the thermostat, the large circulation water outlet is communicated with the water pump cavity through a radiator, a small circulation water inlet of the thermostat penetrates through the gear chamber shell and is communicated with the water pump cavity, and the thermostat is used for adjusting cooling water from the water return port of the water pump to enter the large circulation water outlet or enter the water pump cavity through the small circulation water inlet; the gear chamber shell on one side of the bearing mounting hole is provided with a protruding part, the protruding part is provided with a mounting end face, the mounting end face is provided with an inner concave cavity, the mounting end face is provided with a water pump cover, and the water pump cover and the inner concave cavity are enclosed to form the water pump cavity.
2. The gear chamber of claim 1, wherein the water pump shaft passes through the protrusion and a water seal is provided on the water pump shaft passing through the protrusion.
3. The gear chamber according to claim 2, wherein the water pump shaft is mounted in the bearing mounting hole through bearings, and oil seals are respectively provided on the water pump shafts at both ends of the bearings.
4. A gear chamber according to claim 3, wherein a gap is provided between the oil seal near the water seal side and the water seal, and a drain hole communicating with the gap is provided in the protruding portion.
5. The gear chamber according to claim 4, wherein a body water inlet is provided on the outer side of the water pump cover, and the body water inlet is communicated with the water outlet end of the water pump chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710571754.6A CN107191267B (en) | 2017-07-13 | 2017-07-13 | Gear chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710571754.6A CN107191267B (en) | 2017-07-13 | 2017-07-13 | Gear chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107191267A CN107191267A (en) | 2017-09-22 |
| CN107191267B true CN107191267B (en) | 2023-05-26 |
Family
ID=59882205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710571754.6A Active CN107191267B (en) | 2017-07-13 | 2017-07-13 | Gear chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107191267B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3474736A (en) * | 1967-12-27 | 1969-10-28 | Koehring Co | Pressure loaded gear pump |
| US4016825A (en) * | 1975-09-30 | 1977-04-12 | Heinz Pichl | Device for driving a boat propeller and cooling water pump |
| US4925367A (en) * | 1989-05-19 | 1990-05-15 | Deco-Grand, Inc. | Engine block water pump assembly |
| US5282446A (en) * | 1991-11-18 | 1994-02-01 | Hobourn Automotive Ltd. | Rotary pump assemblies |
| CN1487178A (en) * | 2002-09-09 | 2004-04-07 | 本田技研工业株式会社 | Drive device for air pump |
| WO2004088103A1 (en) * | 2003-03-07 | 2004-10-14 | Chongqing Lifan Industry (Group) Co., Ltd . | Water pump for motorcycle engine |
| CN102330599A (en) * | 2011-08-05 | 2012-01-25 | 无锡开普动力有限公司 | Inline pump gear transmission structure for V-type engine |
| CN103195872A (en) * | 2013-03-06 | 2013-07-10 | 鞍山经纬海虹农机科技有限公司 | Power output transfer case and use method |
| CN203584554U (en) * | 2013-11-25 | 2014-05-07 | 常州常发动力机械有限公司 | Diesel engine cooling water pump integrated to engine body |
| CN105402164A (en) * | 2015-12-28 | 2016-03-16 | 重庆迎洲压铸有限公司 | Special water pump housing |
| CN106481475A (en) * | 2016-12-28 | 2017-03-08 | 广西玉柴机器股份有限公司 | A kind of dry liner |
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| US6453868B1 (en) * | 2000-12-15 | 2002-09-24 | Deere & Company | Engine timing gear cover with integral coolant flow passages |
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| CN206874361U (en) * | 2017-07-13 | 2018-01-12 | 广西玉柴机器股份有限公司 | Gear chamber |
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2017
- 2017-07-13 CN CN201710571754.6A patent/CN107191267B/en active Active
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|---|---|---|---|---|
| US3474736A (en) * | 1967-12-27 | 1969-10-28 | Koehring Co | Pressure loaded gear pump |
| US4016825A (en) * | 1975-09-30 | 1977-04-12 | Heinz Pichl | Device for driving a boat propeller and cooling water pump |
| US4925367A (en) * | 1989-05-19 | 1990-05-15 | Deco-Grand, Inc. | Engine block water pump assembly |
| US5282446A (en) * | 1991-11-18 | 1994-02-01 | Hobourn Automotive Ltd. | Rotary pump assemblies |
| CN1487178A (en) * | 2002-09-09 | 2004-04-07 | 本田技研工业株式会社 | Drive device for air pump |
| WO2004088103A1 (en) * | 2003-03-07 | 2004-10-14 | Chongqing Lifan Industry (Group) Co., Ltd . | Water pump for motorcycle engine |
| CN102330599A (en) * | 2011-08-05 | 2012-01-25 | 无锡开普动力有限公司 | Inline pump gear transmission structure for V-type engine |
| CN103195872A (en) * | 2013-03-06 | 2013-07-10 | 鞍山经纬海虹农机科技有限公司 | Power output transfer case and use method |
| CN203584554U (en) * | 2013-11-25 | 2014-05-07 | 常州常发动力机械有限公司 | Diesel engine cooling water pump integrated to engine body |
| CN105402164A (en) * | 2015-12-28 | 2016-03-16 | 重庆迎洲压铸有限公司 | Special water pump housing |
| CN106481475A (en) * | 2016-12-28 | 2017-03-08 | 广西玉柴机器股份有限公司 | A kind of dry liner |
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|---|
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107191267A (en) | 2017-09-22 |
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