CN206555416U - A kind of heavy-duty transmission cooling and lubricating system - Google Patents
A kind of heavy-duty transmission cooling and lubricating system Download PDFInfo
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- CN206555416U CN206555416U CN201720099492.3U CN201720099492U CN206555416U CN 206555416 U CN206555416 U CN 206555416U CN 201720099492 U CN201720099492 U CN 201720099492U CN 206555416 U CN206555416 U CN 206555416U
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Abstract
The utility model discloses a kind of heavy-duty transmission cooling and lubricating system, including oil pump, filter, temperature-sensing valve, radiator, oil discharge screw, two spray bars and a nozzle tip.When temperature-sensing valve is closed, temperature-sensing valve oil inlet pipe is connected with temperature-sensing valve flowline；When temperature-sensing valve is opened, temperature-sensing valve oil inlet pipe is connected with cooling oil inlet pipe, and cooling flowline is connected with temperature-sensing valve flowline.The input of oil discharge screw is connected with temperature-sensing valve flowline, and three output ends of oil discharge screw are connected with two spray bars and nozzle tip respectively.Two spray bars extend on odd-side, every spray bar from main tank and are provided with several spray orifices.Temperature-sensing valve is used for whether gear oil to enter radiator.The utility model is combined using external radiator and oil pump forced feed lubrication, it is ensured that the lubrication demand of Special complex operating mode lower axle tooth, bearing, seal, lubricating oil etc.；There is simple in construction, dependable performance, the significant advantage of cooling and lubricating effect simultaneously.
Description
Technical field
The utility model is related to heavy vehicle transmission field, particularly a kind of heavy-duty transmission cooling and lubricating system.
Background technology
At present, domestic heavy-duty commercial vehicle speed changer is generally manual transmission, and its type of cooling overwhelming majority is using driving wind
Cold mode.However, driving is air-cooled to be influenceed very big by vehicle driving-cycle, particularly in mountain area operating mode, there is continuous long slope,
Vehicle Speed is low, and speed changer air cooling effect is poor, and superheating phenomenon easily occurs in speed changer.When speed changer is overheated, become
Fast device internal gear oil viscosity declines, carbonization, easily causes the spot corrosion of axle tooth, gluing, and then influence speed changer service life, reliability
Reduction.
In addition, the lubrication of speed changer interior axle tooth, the overwhelming majority belongs to passive profit by the way of gear splash lubrication
It is sliding.Due to the particularity of double intermediate shaft structures, major-minor case respectively has a jackshaft to be arranged in oblique upper, is continuously greatly enhanced in mountain area etc.
Under the operating mode of slope, go up a slope or descending always has a jackshaft to make poor lubrication due to not reaching gear pasta.
The particularity of the utility model combination mountain area operating mode and the design feature of twin countershaft transmission, are devised outside one kind
The cooling and lubricating system that radiator and oil pump forced feed lubrication are combined is put, is met under double intermediate shaft heavy type speed changer special operation conditions
Use demand, improves the adaptability and reliability of product.
Utility model content
The technical problems to be solved in the utility model is to be directed to above-mentioned the deficiencies in the prior art, and provides a kind of heavy speed change
Device cooling and lubricating system, the heavy-duty transmission cooling and lubricating system using external radiator and oil pump forced feed lubrication be combined it is cold
But lubricating system, meets double intermediate shaft heavy type speed changers in Special complex operating mode lower axle tooth, bearing, seal, lubricating oil etc.
Lubrication demand；There is simple in construction, dependable performance, the significant advantage of cooling and lubricating effect simultaneously.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of heavy-duty transmission cooling and lubricating system, heavy-duty transmission is filled out including case of transmission, main tank, odd-side and sealing
Fill the gear oil in case of transmission middle and lower part；Two jackshafts are each provided with main tank and odd-side, and have a jackshaft
Positioned at the oblique upper of main tank or odd-side cavity；Heavy-duty transmission cooling and lubricating system includes oil pump, filter, temperature-sensing valve, radiating
Device, oil discharge screw, two spray bars and a nozzle tip.
The input of oil pump is connected with oil inlet pipe, and the other end of oil inlet pipe stretches into the gear oil of case of transmission middle and lower part
In, filter is provided with the middle part of oil inlet pipe.
Temperature-sensing valve has temperature-sensing valve oil inlet pipe and temperature-sensing valve flowline, and radiator has cooling oil inlet pipe and cooled down fuel-displaced
Pipe；The other end of cooling oil inlet pipe and cooling flowline is connected with temperature-sensing valve；When temperature-sensing valve is closed, temperature-sensing valve oil inlet pipe
It is connected with temperature-sensing valve flowline；When temperature-sensing valve is opened, temperature-sensing valve oil inlet pipe is connected with cooling oil inlet pipe, cools down flowline
It is connected with temperature-sensing valve flowline.
Oil discharge screw has an input and three output ends, wherein, the input and temperature-sensing valve of oil discharge screw are fuel-displaced
Pipe is connected, and three output ends of oil discharge screw are connected with two spray bars and nozzle tip respectively.
Nozzle tip is held within the case of transmission on the outside of main tank, and nozzle tip can be pointed in main tank cavity oblique upper
Reduction gearing, fore bearing and meshing gear carry out oil jet lubrication on countershaft.
Two spray bars extend to from main tank and several spray orifices are provided with odd-side, every spray bar, two oil spouts
All gears that pipe can be pointed to the jackshaft of main tank and odd-side cavity oblique upper and be sleeved on two jackshafts are carried out
Oil jet lubrication.
Heavy-duty transmission also includes the gear oil temperature sensor that can be detected to gear oil temperature, temperature-sensing valve and gear oil
Temperature sensor is connected.
Two jackshafts in main tank, one be located at main tank cavity oblique upper, another be located at main tank cavity it is oblique under
Side, is provided with the jackshaft of main tank cavity obliquely downward and the oil pump that is engaged with the slot is provided with slot, oil pump inserts
Pin, the internal rotor of oil pump can be rotated with the jackshaft positioned at main tank cavity obliquely downward, realize pump oil.
Two jackshafts in main tank are respectively in two in main tank upper right jackshaft and main tank lower-left jackshaft, odd-side
Countershaft is respectively odd-side upper left jackshaft and odd-side bottom right jackshaft；Two spray bars are respectively upper left spray bar and bottom right oil spout
Pipe.
Oil discharge screw is held within the case of transmission on the outside of main tank, one end of upper left spray bar directly with spiral shell of draining the oil
Bolt is fixedly connected, and the deposition path of upper left spray bar is：Tail end is through to from the front end of main tank lower-left jackshaft, then it is left from odd-side
The front end of upper jackshaft is through to tail end；The deposition path of bottom right spray bar is：It is through to from the front end of main tank upper right jackshaft
Tail end, then it is through to tail end from the front end of odd-side bottom right jackshaft；The arrival end of bottom right spray bar is fixedly installed oil spout bolt,
Oil spout is bolted on case of transmission and is connected by petroleum pipeline with an output end of oil discharge screw.
The end of upper left spray bar is provided with the oil spout cover being fixed on case of transmission, and the oil spout cover can be to odd-side upper left
The rear bearing of jackshaft carries out oil jet lubrication.
Bottom right spray bar includes leading portion and back segment, and leading portion is located in main tank, and back segment is located in odd-side, the friendship of leading portion and back segment
Contact is fixed on major-minor case partition wall, and the end of back segment is pointed at the secondary meshing point of odd-side constant mesh gear.
The utility model is used after said structure, can guarantee that the cooling requirement of heavy-duty transmission under any complex working condition, interior
Portion's lubricant passage way can guarantee that heavy-duty transmission inner shaft tooth, bearing, the lubrication needs of seal under all operating modes, particularly suitable
In bad working environments such as mountain area continuous grade roads, it is ensured that the service life of heavy-duty transmission.Meanwhile, also with simple in construction, performance can
Lean on, the significant advantage of cooling and lubricating effect.
Brief description of the drawings
Fig. 1 shows a kind of main structure diagram of heavy-duty transmission cooling and lubricating system of the utility model.
Fig. 2 shows a kind of 3 D stereo schematic diagram of heavy-duty transmission cooling and lubricating system of the utility model.
Fig. 3 shows A-A sectional views shown in Fig. 1.
Fig. 4 shows B-B sectional views shown in Fig. 3.
Fig. 5 shows E-E sectional views shown in Fig. 1.
Fig. 6 shows F-F sectional views shown in Fig. 1.
Fig. 7 shows G-G sectional views shown in Fig. 1.
Fig. 8 shows H-H sectional views shown in Fig. 1.
Fig. 9 shows C direction views shown in Fig. 1（Case of transmission is hidden）.
Figure 10 shows D direction views shown in Fig. 1（Case of transmission is hidden）.
Wherein have：1. oil pump；2. flowline；3. temperature-sensing valve oil inlet pipe；4. temperature-sensing valve；5. cool down oil inlet pipe；6. radiator；
7. cool down flowline；8. temperature-sensing valve flowline；9. oil discharge screw；10. petroleum pipeline；11. nozzle tip；12. oil spout bolt；13. mistake
Filter；14. transmission case body opening；15. oil inlet pipe；16. welding support；17. gasket seal；18. upper left spray bar；19. oil spout
Cover；20. bottom right spray bar；20-1. leading portions；20-2. back segments；21. oil pump latch；22. main tank lower-left jackshaft.
Embodiment
The utility model is described in further detail with specific better embodiment below in conjunction with the accompanying drawings.
For ease of understanding, before introducing heavy-duty transmission cooling and lubricating system of the present utility model, first to heavy speed change
Device, which is done, to be simply described below.
Heavy-duty transmission includes the gear that case of transmission, main tank, odd-side and sealing are filled in case of transmission middle and lower part
Oil.
Be each provided with two jackshafts in main tank and odd-side, a jackshaft be respectively positioned on main tank or odd-side cavity it is oblique on
Side, another be respectively positioned on main tank cavity obliquely downward.
The position of two jackshafts in major-minor case, preferred arrangement is：Two jackshafts in main tank are respectively main tank
Upper right jackshaft and main tank lower-left jackshaft 22, namely two jackshafts in main tank are separately positioned on the upper right side of main tank cavity
And lower left.
Two jackshafts in odd-side are respectively odd-side upper left jackshaft and odd-side bottom right jackshaft, namely two in odd-side
Root jackshaft is separately positioned on the upper left side and lower right of odd-side cavity.
It is used as replacement, when the position of two jackshafts in major-minor case is other set-up modes, heavy type of the present utility model
Speed changer cooling and lubricating system and cooling and lubricating method are also applicable.
The front end of every jackshaft is provided with fore bearing in major-minor case, and middle part is set with multiple gears, and tail end is all provided with
It is equipped with rear bearing.
As shown in Figure 1 to Figure 2, a kind of heavy-duty transmission cooling and lubricating system, including oil pump 1, filter 13, temperature-sensing valve 4,
Radiator 6, oil discharge screw 9, two spray bars and a nozzle tip 11.
Oil pump is preferably fixedly connected with main tank lower-left jackshaft, and the internal rotor of oil pump can be turned with main tank lower-left jackshaft
It is dynamic, realize self-driven pump oil.
Mode is fixedly connected between oil pump and main tank lower-left jackshaft, preferably as shown in figure 8, on the jackshaft of main tank lower-left
It is provided with the oil pump latch 21 for being provided with and being engaged with the slot on slot, oil pump.
As shown in figure 3, the input of oil pump is connected with oil inlet pipe 15, oil inlet pipe 15 passes through welding support 16 and transmission case
Body is fixed through bolt.The output end of oil pump is connected with flowline 2.
The input of oil inlet pipe is stretched into the gear oil of case of transmission middle and lower part.
Filter is provided with the middle part of oil inlet pipe, filter is preferably welded structure, and filter front preferably passes through
Screw thread is fixedly connected with case of transmission, consequently facilitating dismounting is with changing filter.
As shown in figure 4, filter end is preferably connected by transmission case body opening 14 with oil inlet pipe 15.
Temperature-sensing valve 4 has temperature-sensing valve oil inlet pipe 3 and temperature-sensing valve flowline 8.It is excellent between temperature-sensing valve oil inlet pipe 3 and flowline 2
Transmission case body opening was gated to be connected.
Oil pump 1 is under the driving of main tank lower-left jackshaft 22 by gear oil（Namely lubricating oil）Pump out, through flowline 2 and temperature
Control valve oil inlet pipe 3 and enter temperature-sensing valve 4.
Above-mentioned radiator 6 is preferably mounted on vehicle frame, the good position of ventilation effect is arranged in, beneficial to the cooling of gear oil.
Radiator 6 has cooling oil inlet pipe 5 and cooling flowline 7.The other end for cooling down oil inlet pipe and cooling flowline is equal
It is connected with temperature-sensing valve.
Further, heavy-duty transmission also includes the gear oil temperature sensor that can be detected to gear oil temperature, temperature-sensing valve
It is connected with gear oil temperature sensor.The temperature that temperature-sensing valve is detected according to gear oil temperature sensor, when controlling the unlatching of temperature-sensing valve
Machine, determines whether gear oil needs to be cooled down into radiator.
Certainly, as replacement, temperature sensor, the TEMP can also be set inside temperature-sensing valve or in oil inlet pipe 15
Device energy automatic detection flow to the temperature of the gear oil of temperature-sensing valve.
When gear oil temperature is less than temperature-sensing valve opening temperature, temperature-sensing valve is closed, and temperature-sensing valve oil inlet pipe and temperature-sensing valve are fuel-displaced
Pipe is connected, and gear oil does not enter radiator.
After gear oil temperature reaches 4 opening temperature of temperature-sensing valve, temperature-sensing valve is opened, temperature-sensing valve oil inlet pipe and cooling oil inlet pipe
It is connected, cooling flowline is connected with temperature-sensing valve flowline；Gear oil enters radiator 6 through cooling down oil inlet pipe 5, realizes gear
The refrigerating function of oil, temperature-sensing valve 4 is flowed back to after gear oil cooling through supercooling flowline 7, and by temperature-sensing valve flowline 8 and oil transportation
Pipe 10 is delivered to oil discharge screw 9.Wherein, it is connected between temperature-sensing valve flowline and petroleum pipeline by transmission case body opening.
Oil discharge screw is fixed on the case of transmission on the outside of main tank, and the structure of oil discharge screw is prior art, its structure
Specifically it may be referred to described in application number 201010586685.4, equivalent to one valve body, it is also possible to prevent in transmission case
Body is internally formed splashing fluid, improves the radiating condition of speed changer.
Oil discharge screw has an input and three output ends, wherein, the input and temperature-sensing valve of oil discharge screw are fuel-displaced
Pipe is connected, and three output ends of oil discharge screw are connected with two spray bars and nozzle tip 11 respectively.
Nozzle tip is held within the case of transmission on the outside of main tank, and nozzle tip can be pointed in main tank cavity oblique upper
Countershaft reduction gearing and the fore bearing being sleeved on the jackshaft and meshing gear carry out oil jet lubrication.
It is fixed on as shown in fig. 6, nozzle tip 11 is spirally connected preferably across gasket seal 17 on case of transmission, up and down four
An aperture is opened in individual direction respectively, therefore, it is possible to lubricate the fore bearing and constant mesh gear of main tank upper right jackshaft.So as to
Ensure the lubrication needs that full working scope is particularly under extreme upward slope operating mode, while can improve in box house formation splashing fluid
The radiating condition of speed changer.
Two spray bars extend to from main tank and several spray orifices are provided with odd-side, every spray bar, two oil spouts
All gears that pipe can be pointed to the jackshaft of main tank and odd-side cavity oblique upper and be sleeved on two jackshafts are carried out
Oil jet lubrication.
Two spray bars are respectively upper left spray bar and bottom right spray bar.
As shown in figure 5, upper left spray bar 18 is connected with oil discharge screw 9 by transmission case body opening, oil discharge screw 9 is preferably worn
Gasket seal 17 is crossed to be screwed onto on case of transmission.
As shown in figure 9, the deposition path of upper left spray bar is：Tail end is through to from the front end of main tank lower-left jackshaft, then
Tail end is through to from the front end of odd-side upper left jackshaft.
The specific preferred arrangement of upper left spray bar is：Upper left spray bar 18 extends through the top of main tank lower-left jackshaft 22
To odd-side cavity, upper left spray bar 18 just has to each gear of main tank lower-left jackshaft 22 and odd-side upper left jackshaft
Spray orifice, is easy to being lubricated at each pair of point of mesh.
The end of upper left spray bar 18, which is furnished with oil spout cover 19, oil spout cover 19, is provided with aperture, for odd-side upper left jackshaft
Rear bearing carry out oil jet lubrication.
As shown in fig. 7, upper right spray bar 20 is connected with oil spout bolt 12 by transmission case body opening, oil spout bolt 12 is preferred
It is screwed onto through gasket seal 17 on case of transmission, oil discharge screw is connected by petroleum pipeline with oil spout bolt.
Oil spout bolt is also prior art, namely middle part is provided with the bolt of oil transportation channel, and concrete structure is referring to application number
For 201310255830.4 patent application.
As shown in Figure 10, the deposition path of bottom right spray bar is：Tail end is through to from the front end of main tank upper right jackshaft, then
Tail end is through to from the front end of odd-side bottom right jackshaft；The arrival end of bottom right spray bar is fixedly installed oil spout bolt, oil spout spiral shell
Bolt is fixed on case of transmission and is connected by petroleum pipeline with an output end of oil discharge screw.
The specific preferred arrangement of bottom right spray bar is：Bottom right spray bar 20 includes leading portion 20-1 and back segment 20-2, preceding
Section 20-1 is connected with back segment 20-2 by the major-minor case partition wall housing bore inside case of transmission.
Leading portion 20-1 is located in main tank, is arranged in the lower section of main tank upper right jackshaft, extends to major-minor case partition wall shell
Body opening, each gear for facing main tank upper right jackshaft has spray orifice, for being lubricated to each pair of point of mesh.
Back segment 20-2 is located in odd-side, is preferably fixed by screws on major-minor case partition wall, is arranged in odd-side input gear
Above the reduction gearing of odd-side bottom right jackshaft, just to being provided with spray orifice at the rear bearing of main tank upper right jackshaft, for lubricating
The rear bearing of main tank upper right jackshaft, the end of bottom right spray bar 20 just to the secondary meshing point of odd-side constant mesh gear at, for moistening
Sliding this pair of gear.
In the presence of oil discharge screw 9, lubricating oil is transmitted to upper left spray bar 18, nozzle tip 11 and bottom right oil spout respectively
Pipe 20, realizes the forced feed lubrication function of all axle tooth of major-minor case.
A kind of heavy-duty transmission cooling and lubricating method, comprises the following steps.
Step 1, gear oil is filtered：Gear oil positioned at case of transmission middle and lower part was carried out through oil inlet pipe into filter
Filter.
Step 2, the gear oil that completion is filtered in step 1 enters temperature-sensing valve through oil pump, and temperature-sensing valve can be directly or indirectly to entering
The gear oil oil temperature entered in temperature-sensing valve is detected, and determines whether gear oil enters radiator.
1）When gear oil oil temperature is less than design temperature, temperature-sensing valve is closed, and gear oil is directly flowed to from temperature-sensing valve oil inlet pipe
Temperature-sensing valve flowline.
2）When gear oil oil temperature equals or exceeds design temperature, temperature-sensing valve is opened, temperature-sensing valve oil inlet pipe and cooling oil-feed
Pipe is connected, and temperature-sensing valve flowline is connected with cooling flowline, and gear oil enters to be cooled down in radiator.
Said gear oil oil temperature design temperature be preferably 120 DEG C, but it is also possible to be other temperature, with specific reference to need into
Row is set.
Step 3, oil jet lubrication：The gear oil flowed out from temperature-sensing valve flowline enters oil discharge screw, then sequentially enters two
In spray bar and a nozzle tip, active oil jet lubrication is realized.
Preferred embodiment of the present utility model described in detail above, still, the utility model is not limited to above-mentioned reality
The detail in mode is applied, in range of the technology design of the present utility model, the technical solution of the utility model can be entered
The a variety of equivalents of row, these equivalents belong to protection domain of the present utility model.
Claims (7)
1. a kind of heavy-duty transmission cooling and lubricating system, heavy-duty transmission includes case of transmission, main tank, odd-side and sealing filling
Gear oil in case of transmission middle and lower part；Two jackshafts are each provided with main tank and odd-side, and have axle position in the middle of one
In the oblique upper of main tank or odd-side cavity；It is characterized in that：Heavy-duty transmission cooling and lubricating system includes oil pump, filter, temperature
Control valve, radiator, oil discharge screw, two spray bars and a nozzle tip；
The input of oil pump is connected with oil inlet pipe, and the other end of oil inlet pipe is stretched into the gear oil of case of transmission middle and lower part, entered
Filter is provided with the middle part of oil pipe；
Temperature-sensing valve has temperature-sensing valve oil inlet pipe and temperature-sensing valve flowline, and radiator has cooling oil inlet pipe and cooling flowline；It is cold
But the other end of oil inlet pipe and cooling flowline is connected with temperature-sensing valve；When temperature-sensing valve is closed, temperature-sensing valve oil inlet pipe and temperature
Control valve flowline is connected；When temperature-sensing valve is opened, temperature-sensing valve oil inlet pipe is connected with cooling oil inlet pipe, cooling flowline and temperature
Control valve flowline is connected；
Oil discharge screw has an input and three output ends, wherein, input and the temperature-sensing valve flowline phase of oil discharge screw
Connection, three output ends of oil discharge screw are connected with two spray bars and nozzle tip respectively；
Nozzle tip is held within the case of transmission on the outside of main tank, and nozzle tip can be pointed to main tank cavity oblique upper jackshaft
On reduction gearing, fore bearing and meshing gear carry out oil jet lubrication；
Two spray bars extend to from main tank and several spray orifices are provided with odd-side, every spray bar, two spray bar energy
All gears for being pointed to the jackshaft of main tank and odd-side cavity oblique upper and being sleeved on two jackshafts carry out oil spout
Lubrication.
2. heavy-duty transmission cooling and lubricating system according to claim 1, it is characterised in that：Heavy-duty transmission also includes energy
The gear oil temperature sensor detected to gear oil temperature, temperature-sensing valve is connected with gear oil temperature sensor.
3. heavy-duty transmission cooling and lubricating system according to claim 1, it is characterised in that：Two centres in main tank
Axle, an oblique upper positioned at main tank cavity, another obliquely downward positioned at main tank cavity, in main tank cavity obliquely downward
The oil pump latch for being provided with and being engaged with the slot on slot, oil pump is provided with countershaft, the internal rotor of oil pump can be with positioned at master
The jackshaft of case cavity obliquely downward is rotated, and realizes pump oil.
4. heavy-duty transmission cooling and lubricating system according to claim 1, it is characterised in that：Two jackshafts in main tank
Two jackshafts in respectively main tank upper right jackshaft and main tank lower-left jackshaft, odd-side be respectively odd-side upper left jackshaft and
Odd-side bottom right jackshaft；Two spray bars are respectively upper left spray bar and bottom right spray bar.
5. heavy-duty transmission cooling and lubricating system according to claim 4, it is characterised in that：Oil discharge screw is held within
On case of transmission on the outside of main tank, one end of upper left spray bar is directly fixedly connected with oil discharge screw, the cloth of upper left spray bar
Putting path is：Tail end is through to from the front end of main tank lower-left jackshaft, then tail end is through to from the front end of odd-side upper left jackshaft；
The deposition path of bottom right spray bar is：Tail end is through to from the front end of main tank upper right jackshaft, then from odd-side bottom right jackshaft
Front end is through to tail end；The arrival end of bottom right spray bar is fixedly installed oil spout bolt, and oil spout is bolted to case of transmission
It is connected above and with an output end of oil discharge screw by petroleum pipeline.
6. heavy-duty transmission cooling and lubricating system according to claim 5, it is characterised in that：The end of upper left spray bar is set
The oil spout cover being fixed on case of transmission is equipped with, the oil spout cover can carry out oil spout profit to the rear bearing of odd-side upper left jackshaft
It is sliding.
7. heavy-duty transmission cooling and lubricating system according to claim 5, it is characterised in that：Bottom right spray bar includes leading portion
And back segment, leading portion is in main tank, and back segment is located in odd-side, and the interface point of leading portion and back segment is fixed on major-minor case partition wall, after
Point at the secondary meshing point of odd-side constant mesh gear the end of section.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720099492.3U CN206555416U (en) | 2017-01-23 | 2017-01-23 | A kind of heavy-duty transmission cooling and lubricating system |
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| CN201720099492.3U CN206555416U (en) | 2017-01-23 | 2017-01-23 | A kind of heavy-duty transmission cooling and lubricating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594253A (en) * | 2017-01-23 | 2017-04-26 | 中国第汽车股份有限公司 | Heavy type speed changer cooling and lubricating system and cooling and lubricating method |
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2017
- 2017-01-23 CN CN201720099492.3U patent/CN206555416U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594253A (en) * | 2017-01-23 | 2017-04-26 | 中国第汽车股份有限公司 | Heavy type speed changer cooling and lubricating system and cooling and lubricating method |
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