CN114087062A - Dual cooling type engineering machinery diesel engine - Google Patents

Dual cooling type engineering machinery diesel engine Download PDF

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Publication number
CN114087062A
CN114087062A CN202111360020.6A CN202111360020A CN114087062A CN 114087062 A CN114087062 A CN 114087062A CN 202111360020 A CN202111360020 A CN 202111360020A CN 114087062 A CN114087062 A CN 114087062A
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CN
China
Prior art keywords
cooling
linkage
driving
pipe
cooling box
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Granted
Application number
CN202111360020.6A
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Chinese (zh)
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CN114087062B (en
Inventor
胡金怀
胡恒超
余俊卿
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Wuhan Jinlan Engine Co ltd
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Wuhan Jinlan Engine Co ltd
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Priority to CN202111360020.6A priority Critical patent/CN114087062B/en
Publication of CN114087062A publication Critical patent/CN114087062A/en
Application granted granted Critical
Publication of CN114087062B publication Critical patent/CN114087062B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P1/00—Air cooling
    • F01P1/02—Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/0211—Arrangements for mounting filtering elements in housing, e.g. with means for compensating thermal expansion or vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/0214—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters with filters comprising movable parts, e.g. rotating filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P1/00—Air cooling
    • F01P1/06—Arrangements for cooling other engine or machine parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/12—Filtering, cooling, or silencing cooling-air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P9/00—Cooling having pertinent characteristics not provided for in, or of interest apart from, groups F01P1/00 - F01P7/00
    • F01P9/02—Cooling by evaporation, e.g. by spraying water on to cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • F02F7/007—Adaptations for cooling
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

The invention discloses a dual-cooling type engineering machinery diesel engine which comprises a driving cooling box and a top cooling box, wherein the driving cooling box is arranged at the top end of the top cooling box, a driving piston cylinder is arranged between the driving cooling box and the top cooling box in an inserting mode, a cylinder cover is arranged at the top end of the driving piston cylinder, a sliding filtering device is arranged on one side of the top cooling box, an air inlet is arranged on one side of the driving cooling box, a first air inlet pipe is fixedly arranged in the air inlet in an inserting mode, a cooling air inlet pipe is arranged at the other end of the first air inlet pipe, a cold water thin pipe is wound on the side wall of the cooling air inlet pipe, a cold water inlet pipe is arranged at the top end of the cold water thin pipe, a normal-temperature air inlet pipe is arranged at the top end of the cooling air inlet pipe, the normal-temperature air inlet pipe is communicated with the cooling air inlet pipe, and one end, close to the top cooling box, of the normal-temperature air inlet pipe is communicated with the cylinder cover. Has the advantages that: can carry out the dual cooling of gas and liquid, the cooling efficiency is high, has reduced the noise of diesel engine during operation.

Description

Dual cooling type engineering machinery diesel engine
Technical Field
The invention relates to the technical field of diesel engines, in particular to a dual-cooling type engineering machinery diesel engine.
Background
During the working period of the diesel engine, the temperature of fuel gas in the cylinder can reach 2500 ℃, and part of heat generated by combustion is converted into mechanical work, so that the diesel engine outputs work to the outside; a part of the heat is taken away by the exhausted waste gas; and a part of heat is transferred to parts such as a cylinder cover, a piston ring, an air valve and the like. The cooling system of the diesel engine mainly has the function of dissipating heat of heated parts, such as a cylinder cover, a cylinder sleeve, a piston ring, an air valve and the like, into the atmosphere, so that the normal working temperature of the diesel engine is ensured. The existing machine body has very complicated structure, complex requirements on the casting and processing technology of the machine body and high rejection rate.
An effective solution to the problems in the related art has not been proposed yet.
SUMMARY OF THE PATENT FOR INVENTION
Aiming at the problems in the related art, the invention provides a dual-cooling type engineering machinery diesel engine to overcome the technical problems in the prior related art.
Therefore, the invention adopts the following specific technical scheme:
the utility model provides a dual cooling formula engineering machine tool diesel engine, includes drive cooling case and top cooling case, the drive cooling case is located the top of top cooling case, the drive cooling case with it is equipped with the drive piston section of thick bamboo to alternate between the cooling case of top, the top of drive piston section of thick bamboo is equipped with the cylinder cap, one side of top cooling case is equipped with slip filter equipment.
Further, one side of drive cooling case is equipped with the air intake, the air intake internal fixation alternates and is equipped with first air-supply line, the other end of first air-supply line is equipped with the cooling air-supply line, the lateral wall winding of cooling air-supply line is equipped with the cold water tubule, the top of cold water tubule is equipped with the cold water inlet tube, the top of cooling air-supply line is equipped with the normal atmospheric temperature air-supply line, the normal atmospheric temperature air-supply line with the cooling air-supply line communicates each other, the normal atmospheric temperature air-supply line is close to the one end of top cooling case with the cylinder cap intercommunication.
Furthermore, a first opening and closing plug and a second opening and closing plug are symmetrically arranged at the top end of the top cooling box, an oil injection pipe is arranged between the first opening and closing plug and the second opening and closing plug, the first opening and closing plug, the second opening and closing plug and the oil injection pipe are all arranged in the cylinder cover in an inserting manner, a reaction cavity is arranged at the center position of the bottom end of the cylinder cover, the bottom end of the reaction cavity is communicated with the top end of the driving piston cylinder, an air outlet pipe is arranged at one side, close to the sliding filtering device, of the top end of the top cooling box in an inserting manner, a drain pipe is arranged at the bottom of one side, close to the sliding filtering device, of the top cooling box, the drain pipe is movably connected with the sliding filtering device, an atomizing pipe is arranged at one side of the bottom end inside the top cooling box, a one-way air outlet valve is arranged at the other side of the bottom end inside the top cooling box, and a spraying water inlet pipe is arranged at one side, close to the sliding filtering device, of the bottom end of the atomizing pipe, the other end of the spray water inlet pipe is fixedly communicated with the bottom end of the cold water thin pipe.
Furthermore, the inner wall of the driving cooling box is close to one side of the air inlet and is provided with a one-way air inlet valve, the driving cooling box is close to the top of one side of the sliding filtering device and is alternately provided with a linkage telescopic structure, a sealing piston is movably arranged in the driving piston cylinder, a driving connecting rod is movably hung at the bottom end of the sealing piston, a crank is arranged at the bottom end of the driving connecting rod, a driving cross rod is movably arranged at the bottom end of the crank, and two ends of the driving cross rod are movably inserted into the bottom ends of two sides of the driving cooling box.
Further, the linkage extending structure is equipped with the flexible chamber of linkage, the bottom activity interlude in the flexible chamber of linkage is equipped with the linkage push pedal, the linkage push pedal is close to one side of drive connecting rod is equipped with the slope and pushes away the panel, the slope push away the panel with the contained angle of drive connecting rod is forty-five degrees, the fixed sealed pad that is equipped with of the other end of the linkage push pedal that inclines, the top central point of linkage push pedal puts and is equipped with the baffle that resets, the baffle that resets is close to one side central point who fills up puts and is equipped with reset spring, reset spring's the other end with the lateral wall fixed connection in the flexible chamber of linkage.
Furthermore, a linkage piston cylinder is inserted and arranged at one side, close to the sliding filter device, of the bottom end of the linkage telescopic cavity, a linkage push plate is movably arranged in the linkage piston cylinder, a linkage inclined pull rod is movably arranged at the center of the other end of the linkage piston cylinder, and the other end of the linkage inclined pull rod is movably connected with the sliding filter device.
Further, the one end of slip filter equipment is equipped with stirs the connecting cylinder, stir one side central point of connecting cylinder and put and be equipped with the pipe of discharging fume, the lateral wall of stirring the connecting cylinder evenly is equipped with a plurality of arc grooves of stirring, it is equipped with between the arc groove to stir and stirs the drive groove, the bottom activity of stirring the connecting cylinder is equipped with stirs connection structure, the fixed filter vat that is equipped with of opposite side of stirring the connecting cylinder, the outside movable sleeve of filter vat is equipped with the support cooling frame, the lateral wall of supporting the cooling frame evenly is equipped with a plurality of cigarette windows that advance, the support cooling frame is close to the fixed dysmorphism of being equipped with in one side of blow off pipe connects the shower nozzle, the other end of dysmorphism connection shower nozzle with blow off pipe fixed connection.
It is further stir connection structure is equipped with linkage semicircular arc board, linkage semicircular arc board activity is located stir the arc inslot, the central point of linkage semicircular arc board puts and is equipped with the linkage center pin, the fixed first company board of stirring that is equipped with of one end of linkage center pin, first stir even the board with linkage diagonal draw bar swing joint, the other end of linkage center pin is equipped with the second and stirs even board, first stir even the board with the second stirs even contained angle between the board and is ninety degrees, the second is stirred even the other end of board and is equipped with the third perpendicularly and stirs even board, the third is stirred even the board activity and is located stir the drive inslot.
Furthermore, the side wall of the filter barrel is provided with a filter screen layer, the center of the filter barrel is provided with a transmission flue, the transmission flue is communicated with the smoke exhaust pipe, the side wall of the transmission flue is uniformly provided with a plurality of one-way smoke exhaust valves, the other side of each one-way smoke exhaust valve is provided with a smoke inlet cavity corresponding to the smoke inlet window, and one side of each one-way smoke exhaust valve, which is close to the smoke inlet cavity, is provided with a reverse baffle.
Compared with the prior art, the invention has the following beneficial effects:
1. through the setting of drive cooling case and top cooling case, can avoid diesel engine heat transfer to the outside that produces in the work engineering, improve the cooling efficiency of this diesel engine.
2. Normal temperature air is conveyed into the reaction cavity through the normal temperature air inlet pipe, and then the sealing piston in the driving piston cylinder moves downwards, because the other side of the bottom end inside the top cooling box is provided with the one-way air outlet valve, so that the gas in the driving cooling box flows into the top cooling box through the one-way air outlet valve, when the driving connecting rod is subjected to inertia upward movement, the one-way air inlet valve can be driven to enable the air to enter through the cooling air inlet pipe, through the cold water tubule, the air can enter the cooling air inlet pipe through the normal temperature air inlet rod, and meanwhile, the temperature in the cooling air inlet pipe can be reduced, and further, the air temperature entering the driving cooling box is lower, so that the inside of the driving cooling box can be cooled, the use efficiency of the normal temperature air inlet pipe is improved, and the normal use of a diesel engine is facilitated.
3. After the diesel oil in the reaction cavity reacts with the air, huge thrust pushes the sealing piston to move downwards again, so that the air in the driving cooling cavity is pushed into the top cooling box again, the heat in the top cooling box can be discharged through the air outlet pipe, and the normal work of the diesel engine is facilitated.
4. The water in the cold water thin pipe can be refined to the top cooling box through the spray pipe, and the cold water thin pipe is used for cooling the air inlet pipe, so that the water temperature in the cold water thin pipe rises to some extent, and the heat generated during the operation of the diesel engine is utilized to gasify the cold water thin pipe, thereby improving the cooling efficiency of the top cooling box and reducing the noise generated during the operation of the diesel engine.
5. After the steam after the gasification passes through the outlet duct and discharges, can reduce the bulk temperature of top cooling incasement and then make this diesel engine can carry out the dual cooling of gas and liquid, the cooling efficiency is high.
6. After the sealing piston extrudes the inclined pushing panel, the inclined pushing panel is pushed towards the linkage telescopic cavity by the driving connecting rod through the included angle between the inclined pushing panel and the driving connecting rod being forty-five degrees, because the linkage push plate is movably arranged in the linkage piston cylinder, the other end of the inclined linkage push plate is fixedly provided with the sealing gasket, when the driving connecting rod pushes the inclined pushing panel to the linkage telescopic cavity, the air pressure in the linkage piston cavity can be changed, thereby pushing the linkage diagonal draw bar to move towards one side close to the sliding filter device, when the driving connecting rod moves upwards, the reset baffle is pushed by the reset spring to reset, so as to drive the linkage push plate to reset, further drive the linkage diagonal draw bar to reset, because the first toggle connecting plate is movably connected with the linkage diagonal draw bar, when the linkage diagonal draw bar performs reciprocating push-pull motion, the sliding filter device is matched with a diesel engine to perform linkage filtering work.
7. When the linkage oblique pull rod carries out reciprocal push-pull motion, can and then stir and stir the connecting cylinder and rotate, owing to stir the fixed filter vat that is equipped with of opposite side of connecting cylinder, and then can drive the filter vat and rotate in supporting the cooling frame, can dispel the heat to the filter vat through advancing the cigarette window, avoid the excessive work of filter vat, improve this diesel engine's working life.
8. The smoke and dust in the smoke inlet cavity can be discharged into the transmission flue through the one-way smoke exhaust valve, the smoke and dust can be prevented from being reversely discharged into other smoke inlet cavities, the smoke and dust can be further prevented from being diffused to the periphery of the diesel engine case, the filtered smoke and dust can be discharged in a single direction, and the filtered smoke and dust can be discharged outwards through the smoke exhaust pipe.
Drawings
In order to more clearly illustrate the embodiments of the patent of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the patent of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a dual cooling type diesel engine for construction machinery according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the structure at A in FIG. 1;
FIG. 3 is an enlarged view of a portion of the structure at B in FIG. 1;
FIG. 4 is an enlarged view of a portion of the slide filter apparatus according to the present invention;
fig. 5 is a side view of a filter vat according to the invention.
In the figure:
1. driving a cooling box; 2. a top cooling box; 3. a drive piston cylinder; 4. a cylinder cover; 5. a sliding filter device; 6. a first air inlet pipe; 7. cooling the air inlet pipe; 8. a cold water tubule; 9. a cold water inlet pipe; 10. a normal temperature air inlet pipe; 11. a first opening and closing plug; 12. a second opening and closing plug; 13. an oil spray pipe; 14. a reaction chamber; 15. an air outlet pipe; 16. a blow-off pipe; 17. a spray tube; 18. a one-way air outlet valve; 19. a spray water inlet pipe; 20. a one-way air inlet valve; 21. a linkage telescopic structure; 22. a sealing piston; 23. a drive link; 24. a crank; 25. a drive rail; 26. a linkage telescopic cavity; 27. a linkage push plate; 28. the panel is obliquely pushed; 29. a gasket; 30. resetting the baffle; 31. a return spring; 32. a linkage piston cylinder; 33. linkage diagonal draw bars; 34. stirring the connecting cylinder; 35. a smoke exhaust pipe; 36. poking the arc groove; 37. the connecting structure is shifted; 38. a filter vat; 39. supporting the cooling frame; 40. a smoke inlet window; 41. connecting the spray heads in a special shape; 42. linking the semicircular arc plates; 43. a linkage central shaft; 44. a first toggle connecting plate; 45. a second toggle connecting plate; 46. third, the connecting plate is pulled; 47. poking the driving groove; 48. a filter screen layer; 49. a transmission flue; 50. a one-way smoke exhaust valve; 51. a smoke inlet cavity; 52. a reverse baffle.
Detailed Description
For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to explain, by reference, other possible embodiments and advantages of the invention.
Example one
As shown in figure 1:
the invention provides a structural schematic diagram of a double-cooling type engineering machinery diesel engine, which comprises a driving cooling box 1 and a top cooling box 2, wherein the driving cooling box 1 is arranged at the top end of the top cooling box 2, a driving piston cylinder 3 is inserted between the driving cooling box 1 and the top cooling box 2, a cylinder cover 4 is arranged at the top end of the driving piston cylinder 3, a sliding filter device 5 is arranged at one side of the top cooling box 2, heat generated in the working engineering of the diesel engine can be prevented from being transmitted to the outside through the arrangement of the driving cooling box 1 and the top cooling box 2, the cooling efficiency of the diesel engine is improved, an air inlet is arranged at one side of the driving cooling box 1, a first air inlet pipe 6 is fixedly inserted in the air inlet, a cooling air inlet pipe 7 is arranged at the other end of the first air inlet pipe 6, and a cold water tubule 8 is wound on the side wall of the cooling air inlet pipe 7, the top end of the cold water tubule 8 is provided with a cold water inlet pipe 9, the top end of the cooling air inlet pipe 7 is provided with a normal temperature air inlet pipe 10, the normal temperature air inlet pipe 10 is communicated with the cooling air inlet pipe 7, one end of the normal temperature air inlet pipe 10 close to the top cooling box 2 is communicated with the cylinder cover 4, the cooling air inlet pipe 7 can be cooled through the cold water tubule 8, meanwhile, the normal temperature air inlet pipe 10 can be prevented from being cooled, the use efficiency of the normal temperature air inlet pipe 10 is improved, the normal use of the diesel engine is convenient, the top end of the top cooling box 2 is symmetrically provided with a first opening and closing plug 11 and a second opening and closing plug 12, an oil spraying pipe 13 is arranged between the first opening and closing plug 11 and the second opening and closing plug 12, the first opening and closing plug 11, the second opening and closing plug 12 and the oil spraying pipe 13 are all arranged in the cylinder cover 4 in an alternating manner, and a reaction cavity 14 is arranged at the center position of the bottom end of the cylinder cover 4, the bottom of reaction chamber 14 with the top of drive piston section of thick bamboo 3 is linked together, one side that the top of top cooling box 2 is close to slip filter equipment 5 alternates and is equipped with outlet duct 15, top cooling box 2 is close to one side bottom of slip filter equipment 5 is equipped with blow off pipe 16, blow off pipe 16 with slip filter equipment 5 swing joint, the inside bottom one side of top cooling box 2 is equipped with spray pipe 17, the inside bottom opposite side of top cooling box 2 is equipped with one-way air-out valve 18, the bottom of spray pipe 17 is close to one side of slip filter equipment 5 is equipped with spraying inlet tube 19, the other end of spraying inlet tube 19 with the bottom mounting intercommunication of cold water tubule 8, through outlet duct 15 can make the heat in the top cooling box 2 is discharged, is convenient for the normal work of this diesel engine, through spray pipe 17 can make water in the cold water tubule 8 refine to the water in the top cooling box 2 Because the cold water tubule 8 cools the air inlet pipe 7, thereby the temperature in the cold water tubule 8 rises to some extent, and gasifies it through the heat that this diesel engine during operation produced, has improved the cooling efficiency of top cooling case 2, and has reduced the noise of diesel engine during operation, when the steam after the gasification passes through behind the discharge of outlet duct 15, can reduce the bulk temperature in the top cooling case 2, one side that the inner wall of drive cooling case 1 is close to the air intake is equipped with one-way air inlet valve 20, one side top that drive cooling case 1 is close to the slip filter equipment 5 alternates and is equipped with linkage extending structure 21, the activity is equipped with sealing piston 22 in the drive piston section of thick bamboo 3, driving connecting rod 23 is hung in the bottom activity of sealing piston 22, the bottom of driving connecting rod 23 is equipped with crank 24, the bottom activity of crank 24 is equipped with drive horizontal pole 25, the both ends activity of drive horizontal pole 25 alternates in the both sides bottom of drive cooling case 1, through cold water tubule 8 can be right the cooling air-supply line 7 cools down, can avoid simultaneously cooling to normal atmospheric temperature air-supply line 10, has improved the availability factor of normal atmospheric temperature air-supply line 10, the normal use of the diesel engine of being convenient for, because cold water tubule 8 has cooled down the processing to cooling air-supply line 7 to make the temperature in the cold water tubule 8 rise to some extent, through spray pipe 17 can make the water in the cold water tubule 8 refine to in the top cooling case 2, and make its gasification through the heat that this diesel engine during operation produced, improved the cooling efficiency of top cooling case 2, and reduced the noise of diesel engine during operation, when the steam after the gasification passes through behind 15 discharges of outlet duct, can reduce the bulk temperature in the top cooling case 2, through the one-way air inlet valve 20, cold air can pass through the cooling air inlet pipe 7 to adjust the temperature in the driving cooling box 1 downwards, and meanwhile, the increased temperature can be prevented from flowing back into the cooling air inlet pipe 7 again, so that the cooling efficiency of the cooling air inlet pipe 7 is prevented from being influenced.
The detailed usage and function of the first embodiment: the arrangement of the driving cooling box 1 and the top cooling box 2 can prevent heat generated by a diesel engine in a working project from being transmitted to the outside, the cooling efficiency of the diesel engine is improved, normal temperature air is conveyed into the reaction cavity 14 through the normal temperature air inlet pipe 10, and then the sealing piston 22 in the driving piston cylinder 3 moves downwards, because the other side of the bottom end in the top cooling box 2 is provided with the one-way air outlet valve 18, gas in the driving cooling box 1 flows into the top cooling box 2 through the one-way air outlet valve 18, when the driving connecting rod 23 moves upwards under inertia, the one-way air inlet valve 20 can be driven to lead air to enter through the cooling air inlet pipe 7, because the side wall of the cooling air inlet pipe 7 is wound with the cold water thin pipe 8, the top end of the cold water thin pipe 8 is provided with the cold water inlet pipe 9, and the normal temperature air inlet pipe 10 is communicated with the cooling air inlet pipe 7, air can lead the air to enter into the cooling air inlet pipe 7 through the normal temperature air inlet rod, meanwhile, the temperature in the cooling air inlet pipe 7 can be reduced by cooling of the cold water tubule 8, so that the temperature of air entering the driving cooling box 1 is lower, the inside of the driving cooling box 1 can be cooled, the use efficiency of the normal temperature air inlet pipe 10 is improved, the normal use of the diesel engine is convenient, after diesel oil in the reaction chamber 14 reacts with air, the huge thrust pushes the sealing piston 22 to move downwards again, so that the air in the driving cooling chamber is pushed into the top cooling box 2 again, the heat in the top cooling box 2 can be discharged through the air outlet pipe 15, the normal work of the diesel engine is convenient, water in the cold water tubule 8 can be refined into the top cooling box 2 through the spray pipe 17, and the temperature in the cold water tubule 8 is increased due to the fact that the cooling air inlet pipe 7 is cooled, and the heat that produces through this diesel engine during operation makes its gasification, has improved the cooling efficiency of top cooling box 2 to reduce the noise of diesel engine during operation, after the steam after the gasification passes through 15 discharges of outlet duct, can reduce the bulk temperature in the cooling box 2 of top and then make this diesel engine can carry out the dual cooling of gas and liquid, cooling efficiency is high.
Example two
As shown in fig. 1-5:
the invention provides a structural schematic diagram of a double-cooling engineering machinery diesel engine, which comprises a driving cooling box 1 and a top cooling box 2, wherein the driving cooling box 1 is arranged at the top end of the top cooling box 2, a driving piston cylinder 3 is inserted between the driving cooling box 1 and the top cooling box 2, a cylinder cover 4 is arranged at the top end of the driving piston cylinder 3, a sliding filter device 5 is arranged at one side of the top cooling box 2, a linkage telescopic structure 21 is provided with a linkage telescopic cavity 26, a linkage push plate 27 is movably inserted at the bottom end of the linkage telescopic cavity 26, an inclined push plate 28 is arranged at one side of the linkage push plate 27 close to a driving connecting rod 23, the included angle between the inclined push plate 28 and the driving connecting rod 23 is forty-five degrees, a sealing gasket 29 is fixedly arranged at the other end of the inclined push plate 27, a reset baffle 30 is arranged at the center position of the top end of the linkage push plate 27, the reset baffle 30 is provided with a reset spring 31 at the center position of one side close to the sealing gasket 29, the other end of the reset spring 31 is fixedly connected with the side wall of the linkage telescopic cavity 26, an inclined push plate 28 is arranged at one side close to the driving connecting rod 23 through the linkage push plate 27, the inclined push plate 28 and the driving connecting rod 23 form an included angle of forty-five degrees, when the driving connecting rod 23 slides downwards, the sealing piston 22 is driven to move downwards, when the sealing piston 22 extrudes the inclined push plate 28, the inclined push plate 28 and the driving connecting rod 23 form an included angle of forty-five degrees, so that the driving connecting rod 23 pushes the inclined push plate 28 into the linkage telescopic cavity 26, one side of the bottom end of the linkage telescopic cavity 26 close to the sliding filter device 5 is provided with a linkage piston cylinder 32 in an inserting way, the linkage push plate 27 is movably arranged in the linkage piston cylinder 32, the center of the other end of the linkage piston cylinder 32 is movably provided with a linkage diagonal draw bar 33, the other end of the linkage diagonal draw bar 33 is movably connected with the sliding filter device 5, the linkage push plate 27 is movably arranged in the linkage piston cylinder 32, the other end of the inclined linkage push plate 27 is fixedly provided with a sealing gasket 29, when the inclined push plate 28 is pushed into the linkage telescopic cavity 26 by the driving connecting rod 23, the air pressure in the linkage piston cavity can be changed, so that the linkage diagonal draw bar 33 is pushed to move towards one side close to the sliding filter device 5, when the driving connecting rod 23 moves upwards, the reset baffle 30 is pushed by the reset spring 31 to reset, so that the linkage push plate 27 is driven to reset, so that the linkage diagonal draw bar 33 is driven to reset, one end of the sliding filter device 5 is provided with a toggle connecting cylinder 34, a smoke exhaust pipe 35 is arranged at the center of one side of the stirring connecting cylinder 34, a plurality of stirring arc grooves 36 are uniformly arranged on the side wall of the stirring connecting cylinder 34, stirring driving grooves 47 are arranged between the stirring arc grooves 36, a stirring connecting structure 37 is movably arranged at the bottom end of the stirring connecting cylinder 34, a filter barrel 38 is fixedly arranged at the other side of the stirring connecting cylinder 34, a supporting cooling frame 39 is movably sleeved outside the filter barrel 38, a plurality of smoke inlet windows 40 are uniformly arranged on the side wall of the supporting cooling frame 39, a special-shaped connecting nozzle 41 is fixedly arranged at one side of the supporting cooling frame 39 close to the sewage discharge pipe 16, the other end of the special-shaped connecting nozzle 41 is fixedly connected with the sewage discharge pipe 16, the filtered smoke can be discharged outwards through the smoke exhaust pipe 35, the filter barrel 38 can filter the smoke discharged from the sewage discharge pipe 16, and the filter barrel 38 can dissipate heat through the smoke inlet windows 40, avoiding the excessive work of the filter barrel 38, improving the working life of the diesel engine, the toggle connecting structure 37 is provided with a linkage semi-circular arc plate 42, the linkage semi-circular arc plate 42 is movably arranged in the toggle arc groove 36, the central position of the linkage semi-circular arc plate 42 is provided with a linkage central shaft 43, one end of the linkage central shaft 43 is fixedly provided with a first toggle connecting plate 44, the first toggle connecting plate 44 is movably connected with the linkage diagonal draw bar 33, the other end of the linkage central shaft 43 is provided with a second toggle connecting plate 45, the included angle between the first toggle connecting plate 44 and the second toggle connecting plate 45 is ninety degrees, the other end of the second toggle connecting plate 45 is vertically provided with a third toggle connecting plate 46, the third toggle connecting plate 46 is movably arranged in the toggle driving groove 47, because the first toggle connecting plate 44 is movably connected with the linkage diagonal draw bar 33, when the linkage diagonal draw bar 33 performs reciprocating push-pull motion, the first toggle connecting plate 44 can be driven to rotate by taking the linkage central shaft 43 as an axis, one end of the linkage central shaft 43 is fixedly connected with the first toggle connecting plate 44, so as to drive the linkage central shaft 43 to rotate, the other end of the linkage central shaft 43 is provided with the second toggle connecting plate 45, so as to drive the second toggle connecting plate 45 to rotate, the other end of the second toggle connecting plate 45 is vertically provided with the third toggle connecting plate 46, the third toggle connecting plate 46 is movably arranged in the toggle driving groove 47, so as to drive the toggle driving groove 47 to rotate through the third toggle connecting plate 46, so as to toggle the toggle connecting cylinder 34 to rotate, and the other side of the toggle connecting cylinder 34 is fixedly provided with the filter barrel 38, so as to drive the filter barrel 38 to rotate in the support cooling frame 39, because one side of the supporting and cooling frame 39 close to the sewage discharge pipe 16 is fixedly provided with the special-shaped connecting spray head 41, the other end of the special-shaped connecting spray head 41 is fixedly connected with the sewage discharge pipe 16, the sewage discharge pipe 16 can spray smoke into the filter vat 38 for filtering, the side wall of the filter vat 38 is provided with the filter net layer 48, the central position of the filter vat 38 is provided with the transmission flue 49, the transmission flue 49 is communicated with the smoke discharge pipe 35, the side wall of the transmission flue 49 is uniformly provided with a plurality of one-way smoke discharge valves 50, the other side of the one-way smoke discharge valve 50 is provided with the smoke inlet cavity 51 corresponding to the smoke inlet window 40, one side of the one-way smoke discharge valve 50 close to the smoke inlet cavity 51 is provided with the reverse baffle 52, the smoke in the smoke inlet cavity 51 can be discharged into the transmission flue 49 through the one-way smoke discharge valve 50, and the smoke can be prevented from being reversely discharged into the smoke inlet cavity 51, and further prevent the smoke and dust from diffusing to the periphery of the diesel engine case, thereby enabling the filtered smoke and dust to be discharged in a single direction.
The detailed application method and function of the second embodiment: an inclined push plate 28 is arranged on one side, close to the driving connecting rod 23, of the linkage push plate 27, the included angle between the inclined push plate 28 and the driving connecting rod 23 is forty-five degrees, after the driving connecting rod 23 slides downwards, the sealing piston 22 is driven to move downwards, after the sealing piston 22 extrudes the inclined push plate 28, the included angle between the inclined push plate 28 and the driving connecting rod 23 is forty-five degrees, so that the driving connecting rod 23 pushes the inclined push plate 28 into the linkage telescopic cavity 26, because the linkage push plate 27 is movably arranged in the linkage piston cylinder 32, a sealing gasket 29 is fixedly arranged at the other end of the inclined linkage push plate 27, when the driving connecting rod 23 pushes the inclined push plate 28 into the linkage telescopic cavity 26, the air pressure in the linkage piston cavity can be changed, the linkage inclined pull rod 33 is pushed to move towards one side close to the sliding filter device 5, and when the driving connecting rod 23 moves upwards, the reset baffle 30 is pushed to reset through a reset spring 31, and further drives the linkage push plate 27 to reset, and further drives the linkage diagonal draw bar 33 to reset, because the first toggle connecting plate 44 is movably connected with the linkage diagonal draw bar 33, when the linkage diagonal draw bar 33 performs reciprocating push-pull motion, the first toggle connecting plate 44 can be driven to rotate by taking the linkage central shaft 43 as an axis, because one end of the linkage central shaft 43 is fixedly connected with the first toggle connecting plate 44, the linkage central shaft 43 is driven to rotate, because the other end of the linkage central shaft 43 is provided with the second toggle connecting plate 45, and further drives the second toggle connecting plate 45 to rotate, because the other end of the second toggle connecting plate 45 is vertically provided with the third toggle connecting plate 46, the third toggle connecting plate 46 is movably arranged in the toggle driving groove 47, and further can drive the toggle driving groove 47 to rotate through the third toggle connecting plate 46, and further toggles the connecting cylinder 34 to rotate, because the other side of the toggle connecting cylinder 34 is fixedly provided with the filter barrel 38, thereby driving the filter barrel 38 to rotate in the supporting and cooling frame 39, because the supporting and cooling frame 39 is fixedly provided with the special-shaped connecting spray head 41 at one side close to the sewage discharge pipe 16, the other end of the special-shaped connecting spray head 41 is fixedly connected with the sewage discharge pipe 16, thereby leading the sewage draining pipe 16 to spray the smoke into the filter barrel 38 for filtering, leading the filter barrel 38 to filter the smoke exhausted from the sewage draining pipe 16, the heat of the filter barrel 38 can be dissipated through the smoke inlet window 40, the excessive work of the filter barrel 38 is avoided, the service life of the diesel engine is prolonged, the smoke in the smoke inlet cavity 51 can be discharged into the transmission flue 49 through the one-way smoke exhaust valve 50, and the smoke can be prevented from being reversely discharged into other smoke inlet cavities 51, and then prevent that the smoke and dust from diffusing around the diesel engine case to make the smoke and dust after the filtration can the unilateral discharge, can outwards discharge the flue gas after the filtration through smoke exhaust pipe 35.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (8)

1. The utility model provides a dual cooling formula engineering machine tool diesel engine, its characterized in that, including drive cooling case (1) and top cooling case (2), drive cooling case (1) is located the top of top cooling case (2), drive cooling case (1) with it is equipped with drive piston barrel (3) to alternate between top cooling case (2), the top of drive piston barrel (3) is equipped with cylinder cap (4), one side of top cooling case (2) is equipped with slip filter equipment (5), one side of drive cooling case (1) is equipped with the air intake, the air intake internal fixation alternates and is equipped with first air-supply line (6), the other end of first air-supply line (6) is equipped with cooling air-supply line (7), the lateral wall winding of cooling air-supply line (7) is equipped with cold water tubule (8), the top of cold water tubule (8) is equipped with cold water inlet tube (9), the top of cooling air-supply line (7) is equipped with normal atmospheric temperature air-supply line (10), normal atmospheric temperature air-supply line (10) with cooling air-supply line (7) communicate each other, normal atmospheric temperature air-supply line (10) are close to the one end of top cooling box (2) with cylinder cap (4) intercommunication.
2. The dual cooling type diesel engine for engineering machinery of claim 1, wherein a first opening and closing plug (11) and a second opening and closing plug (12) are symmetrically arranged at the top end of the top cooling box (2), an oil injection pipe (13) is arranged between the first opening and closing plug (11) and the second opening and closing plug (12), the first opening and closing plug (11), the second opening and closing plug (12) and the oil injection pipe (13) are all inserted into the cylinder cover (4), a reaction cavity (14) is arranged at the center of the bottom end of the cylinder cover (4), the bottom end of the reaction cavity (14) is communicated with the top end of the driving piston cylinder (3), an air outlet pipe (15) is inserted into one side of the top end of the top cooling box (2) close to the sliding filter device (5), a drain pipe (16) is arranged at the bottom of one side of the top cooling box (2) close to the sliding filter device (5), blow off pipe (16) with slip filter equipment (5) swing joint, inside bottom one side of top cooling box (2) is equipped with injection spray pipe (17), the inside bottom opposite side of top cooling box (2) is equipped with one-way air-out valve (18), the bottom of injection spray pipe (17) is close to one side of slip filter equipment (5) is equipped with spraying inlet tube (19), the other end of spraying inlet tube (19) with the bottom mounting intercommunication of cold water tubule (8).
3. The dual-cooling type diesel engine for engineering machinery of claim 2, wherein a one-way air inlet valve (20) is arranged on one side, close to the air inlet, of the inner wall of the driving cooling box (1), a linkage telescopic structure (21) is inserted into the top of one side, close to the sliding filter device (5), of the driving cooling box (1), a sealing piston (22) is movably arranged in the driving piston cylinder (3), a driving connecting rod (23) is movably hung at the bottom end of the sealing piston (22), a crank (24) is arranged at the bottom end of the driving connecting rod (23), a driving cross rod (25) is movably arranged at the bottom end of the crank (24), and two ends of the driving cross rod (25) are movably inserted into bottom ends of two sides of the driving cooling box (1).
4. The dual cooling type diesel engine for construction machinery according to claim 3, the linkage telescopic structure (21) is provided with a linkage telescopic cavity (26), the bottom end of the linkage telescopic cavity (26) is movably inserted with a linkage push plate (27), an inclined push panel (28) is arranged on one side of the linkage push plate (27) close to the driving connecting rod (23), the inclined angle between the inclined pushing panel (28) and the driving connecting rod (23) is forty-five degrees, the other end of the inclined linkage push plate (27) is fixedly provided with a sealing gasket (29), a reset baffle (30) is arranged at the center of the top end of the linkage push plate (27), a return spring (31) is arranged at the center of one side of the return baffle (30) close to the sealing gasket (29), the other end of the return spring (31) is fixedly connected with the side wall of the linkage telescopic cavity (26).
5. The dual-cooling type diesel engine for engineering machinery of claim 4, wherein a linkage piston cylinder (32) is inserted into one side of the bottom end of the linkage telescopic cavity (26) close to the sliding filter device (5), the linkage push plate (27) is movably arranged in the linkage piston cylinder (32), a linkage diagonal draw bar (33) is movably arranged at the center of the other end of the linkage piston cylinder (32), and the other end of the linkage diagonal draw bar (33) is movably connected with the sliding filter device (5).
6. The dual cooling type diesel engine for engineering machinery of claim 5, wherein one end of the sliding filtering device (5) is provided with a stirring connecting cylinder (34), a smoke exhaust pipe (35) is arranged at the center of one side of the stirring connecting cylinder (34), the side wall of the stirring connecting cylinder (34) is uniformly provided with a plurality of stirring arc grooves (36), stirring driving grooves (47) are arranged between the stirring arc grooves (36), the bottom end of the stirring connecting cylinder (34) is movably provided with a stirring connecting structure (37), the other side of the stirring connecting cylinder (34) is fixedly provided with a filtering barrel (38), the outer side of the filtering barrel (38) is movably sleeved with a supporting cooling frame (39), the side wall of the supporting cooling frame (39) is uniformly provided with a plurality of smoke inlet windows (40), one side of the supporting cooling frame (39) close to the sewage discharge pipe (16) is fixedly provided with a special-shaped connecting nozzle (41), the other end of the special-shaped connecting spray head (41) is fixedly connected with the sewage discharge pipe (16).
7. The dual cooling type diesel engine for construction machinery according to claim 6, the toggle connecting structure (37) is provided with a linkage semi-circular arc plate (42), the linkage semi-circular arc plate (42) is movably arranged in the toggle arc groove (36), a linkage central shaft (43) is arranged at the central position of the linkage semicircular arc plate (42), one end of the linkage central shaft (43) is fixedly provided with a first toggle connecting plate (44), the first toggle connecting plate (44) is movably connected with the linkage diagonal draw bar (33), the other end of the linkage central shaft (43) is provided with a second toggle connecting plate (45), the included angle between the first toggle connecting plate (44) and the second toggle connecting plate (45) is ninety degrees, the other end of the second toggle connecting plate (45) is vertically provided with a third toggle connecting plate (46), the third toggle connecting plate (46) is movably arranged in the toggle driving groove (47).
8. The dual cooling type diesel engine for engineering machinery of claim 7, wherein a filter screen layer (48) is arranged on the side wall of the filter barrel (38), a transmission flue (49) is arranged at the center of the filter barrel (38), the transmission flue (49) is communicated with the smoke exhaust pipe (35), a plurality of one-way smoke exhaust valves (50) are uniformly arranged on the side wall of the transmission flue (49), a smoke inlet cavity (51) corresponding to the smoke inlet window (40) is arranged on the other side of the one-way smoke exhaust valve (50), and a reverse baffle (52) is arranged on one side of the one-way smoke exhaust valve (50) close to the smoke inlet cavity (51).
CN202111360020.6A 2021-11-17 2021-11-17 Dual cooling type engineering machinery diesel engine Active CN114087062B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5540191A (en) * 1994-12-12 1996-07-30 Caterpillar Inc. High efficiency thermal regenerated internal combustion engine
CN201916026U (en) * 2011-01-20 2011-08-03 湖北业浩动力科技有限公司 Land mobile diesel engine exhaust atomization cooling device
CN109026336A (en) * 2018-08-31 2018-12-18 广州启盈机电设备有限公司 A kind of automobile engine auxiliary temperature-reducing method
CN111075589A (en) * 2019-12-30 2020-04-28 重庆品恒动力机械有限公司 Forced air cooling diesel engine body
CN211975114U (en) * 2020-04-02 2020-11-20 河北华宏广源橡塑有限公司 Exhaust conversion box of dumper

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5540191A (en) * 1994-12-12 1996-07-30 Caterpillar Inc. High efficiency thermal regenerated internal combustion engine
CN201916026U (en) * 2011-01-20 2011-08-03 湖北业浩动力科技有限公司 Land mobile diesel engine exhaust atomization cooling device
CN109026336A (en) * 2018-08-31 2018-12-18 广州启盈机电设备有限公司 A kind of automobile engine auxiliary temperature-reducing method
CN111075589A (en) * 2019-12-30 2020-04-28 重庆品恒动力机械有限公司 Forced air cooling diesel engine body
CN211975114U (en) * 2020-04-02 2020-11-20 河北华宏广源橡塑有限公司 Exhaust conversion box of dumper

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