CN108915888B - Timing gear chamber cover system at rear end of diesel engine - Google Patents
Timing gear chamber cover system at rear end of diesel engine Download PDFInfo
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- CN108915888B CN108915888B CN201810794309.0A CN201810794309A CN108915888B CN 108915888 B CN108915888 B CN 108915888B CN 201810794309 A CN201810794309 A CN 201810794309A CN 108915888 B CN108915888 B CN 108915888B
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- 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
- F02F7/0021—Construction
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- 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
- F02F7/0073—Adaptations for fitting the engine, e.g. front-plates or bell-housings
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model provides a right-time gear chamber lid system of diesel engine rear end, including the room end apron and around its left connecting portion that connects gradually in the periphery, the lid stretches end, right connecting portion and last connecting portion down, wherein, the top of room end apron is connected with the cylinder head cover through last connecting portion, the left and right sides of room end apron is connected with the front of back end plate body through left and right connecting portion respectively, the back of back end plate body is connected with the cylinder block, the cylinder cap, the bottom of room end apron is connected through the lid stretches end and the gear chamber lid cooperation groove that the flywheel shell top set up is wedged, the room lid body, the flywheel shell is just set up from top to bottom, the volume of room lid body is less than the volume of flywheel shell, the lid stretches end, the gear chamber lid cooperation groove is the structure of falling omega down. The design is small in size, light in weight, convenient to maintain and adjust the gear system, more in connecting surface, strong in firmness and beneficial to improving the overall rigidity.
Description
Technical Field
The invention relates to a diesel engine gear chamber structure, belongs to the field of engines and related systems, and particularly relates to a diesel engine rear end timing gear chamber cover system which is particularly suitable for reducing the volume of a timing gear chamber cover and is convenient to maintain and adjust the gear system.
Background
At present, because the running fluctuation of the crankshaft flywheel end of the diesel engine is more stable relative to the front end of the crankshaft flywheel end, more and more diesel engines are provided with a rear gear chamber, namely the gear chamber is arranged at the rear end of an engine cylinder body, and the power required by a gear system is output from the crankshaft flywheel end, so that the effects of vibration reduction and noise reduction are achieved. In the prior art, the rear gear chamber is usually directly cast and molded integrally by a cylinder body, or the gear chamber is assembled to the rear end of the cylinder body as an independent part, and finally a flywheel housing is installed to form a complete and closed rear gear chamber structure, which has the following defects:
(1) And the structure of the integral casting molding of the cylinder body and the gear chamber is as follows: the casting process has high difficulty, after the length and the size of the cylinder body are increased, the tooling and machining equipment are increased, the production and manufacturing investment is high, in addition, the whole cylinder body is cast by gray iron, and the weight of the whole cylinder body is high, so that the weight of the whole machine is increased;
(2) The gear chamber is assembled to the structure of the rear end of the cylinder body as an independent part: the gear chamber corresponds to all gears, the flywheel shell is only responsible for the flywheel, the volume of the gear chamber is huge, the independent gear chamber is usually made of two materials, namely gray iron or aluminum alloy, the gray iron material has the defect of large weight of the gear chamber, the aluminum alloy gear chamber has the defect of reducing the integral rigidity of the rear end of the engine, and the characteristic of huge volume of the gear chamber can increase the defects of weight and rigidity, so that the difficulty of manufacturing and assembling is increased;
(3) The existing rear gear chamber has the defects that when the phase relation between the crankshaft and each system and the gear backlash are required to be adjusted in subsequent maintenance, enough space is needed to be reserved for gear adjustment after the flywheel housing is detached, the workload of detaching the flywheel housing on the whole vehicle is huge, and the transmission shaft, the gearbox and the flywheel are simultaneously detached.
The invention patent application with the application publication number of CN104989545A and the application publication date of 2015, 10 and 21 discloses a multifunctional timing gear chamber double-circulation cooling system of a diesel engine, which comprises a timing gear chamber, wherein one surface of the timing gear chamber is connected with an engine body, the engine body is connected with a cylinder cover, the cylinder cover is connected with a large circulation water outlet pipe, the left side of the cylinder cover is connected with a small circulation water outlet pipe, and the timing gear chamber is connected with the small circulation water outlet pipe; the other side face of the timing gear chamber is provided with a timing gear chamber cover which is connected with a water pump. While this design adds control over the operation of the cooling water by the thermostat, it still has the following drawbacks:
firstly, the inner side surface of the timing gear chamber in the design completely covers the cylinder body and the cylinder cover, the volume is huge, and meanwhile, the outer side surface of the timing gear chamber is connected with the timing gear chamber cover, so that the volume of the timing gear chamber cover is also huge, the defects of the huge volumes of the timing gear chamber and the timing gear chamber cover can cause serious defects in the aspects of weight or rigidity, and the difficulty is increased for manufacturing and assembling products;
secondly, the timing gear chamber cover in the design covers almost all gears, which easily leads to that the flywheel housing must be detached for maintenance to provide enough space, and the maintenance difficulty is increased.
The disclosure of this background section is only intended to increase the understanding of the general background of the present patent application and should not be taken as an admission 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 overcome the defects and problems that the timing gear chamber cover is large in size and inconvenient to maintain and adjust a gear system in the prior art, and provides a diesel engine rear end timing gear chamber cover system which is small in size and convenient to maintain and adjust the gear system.
In order to achieve the above object, the technical solution of the present invention is: a diesel engine rear end timing gear chamber cover system comprises a chamber cover body connected with a cylinder cover;
the room lid body includes room end apron and stretches end, right connecting portion and upper connecting portion down around its peripheral left connecting portion that connects gradually, the top of room end apron is connected with the cylinder head cover through upper connecting portion, and the left and right sides of room end apron is connected with the front of back end plate body through left connecting portion, right connecting portion respectively, and the back of back end plate body is connected with cylinder block, cylinder cap, and the bottom of room end apron is connected with the gear chamber lid cooperation groove that flywheel shell top set up through stretching end down, and gear chamber lid cooperation groove wedges with the lid stretching end of embedding its inside down, and room lid body, flywheel shell are just setting up from top to bottom, and the volume of room lid body is less than the volume of flywheel shell.
The lower extending end of the cover comprises a left platform part, a right platform part and a middle convex arc part which protrudes downwards, the bottom end of the left connecting part is connected with the bottom end of the right connecting part after passing through the left platform part, the middle convex arc part and the right platform part in sequence, and the heights of the left platform part and the right platform part are the same; the middle convex arc part comprises an outer convex arc edge, an inner convex arc edge and a middle concave arc groove clamped between the outer convex arc edge and the inner convex arc edge.
The downward extending end of the cover is of an inverted omega structure, and the matching groove of the gear chamber cover is of an inverted omega structure.
The right connecting part is provided with a right upper column hole and a right lower column hole along the right side edge of the right connecting part, and the right lower column Kong Jin covers the right end of the lower extending end top.
The upper cover plate of the chamber bottom is provided with a left-hand end of the top, a left-hand end of the bottom, a right-hand end of the top, a corresponding left-hand screw hole, a bottom screw hole and a right-hand screw hole are respectively arranged at the positions of the left-hand end, the bottom and the right-hand end of the top, the positions of the bottom cover plate, the right screw hole and the right-hand lower column hole are arranged near the right-hand lower column hole, a right-hand lower two holes and a right-hand lower three hole which are arranged in a triangle are arranged at the positions of the chamber bottom cover plate, the right-hand lower column hole and the right-hand lower column hole are lower than the right lower hole.
The left connecting part comprises a left arc-shaped table and a left first column hole, a left second column hole, a left third column hole, a left first half groove and a left second half groove which are formed in the left arc-shaped table, wherein the left first column hole, the left first half groove, the left second column hole, the left second half groove and the left third column hole are sequentially formed from top to bottom along the outer side surface of the left arc-shaped table, and the inner side surface of the left arc-shaped table is connected with a bottom cover plate.
The left first column hole, the left second column hole and the left third column hole are through holes, and the depths of the left first half groove and the left second half groove are smaller than those of the left first column hole, the left second column hole and the left third column hole; the left half groove and the left half groove respectively comprise a half groove side arc wall and a half groove bottom plane, the top surface of the half groove side arc wall is a top groove opening, the inner side surface of the half groove side arc wall is connected with the half groove bottom plane, and the outer side surface of the half groove side arc wall is an outer groove opening.
The upper connecting portion comprises a left upper connecting surface, a middle upper connecting surface and a right upper connecting surface, the inner end of the left upper connecting surface is connected with the inner end of the right upper connecting surface through the middle upper connecting surface, the bottom surface of the left upper connecting surface is connected with the top of the left connecting portion, the bottom surface of the right upper connecting surface is connected with the top of the right connecting portion, and the middle upper connecting surface and the right upper connecting surface are respectively provided with a middle upper connecting hole and a right upper connecting hole.
The right upper connecting surface is of an arc-shaped structure, and the side wall of the right connecting part is of an arc-shaped structure.
The middle part of room end apron is provided with separates the arc, separates the top of arc and is connected with last connecting portion, separates the bottom of arc and is connected with the junction of left connecting portion, lid lower extreme, left side connecting portion, go up connecting portion, separate the arc and enclose into a left apron district altogether, right side connecting portion, go up connecting portion, separate the arc, lid lower extreme enclose into a right apron district altogether, be provided with a plurality of left post round holes that run through in the left apron district, be provided with a plurality of right post round holes and right post waist hole that run through in the right apron district, right post round hole Gao Yuyou post waist hole sets up, and the area of right post round hole is less than the area of right post waist hole.
Compared with the prior art, the invention has the beneficial effects that:
1. in the timing gear chamber cover system at the rear end of the diesel engine, the chamber cover body (namely the main body of the timing gear chamber cover) comprises a chamber bottom cover plate, a left connecting part, a cover lower extending end, a right connecting part and an upper connecting part which are sequentially connected around the periphery of the chamber bottom cover plate, wherein the bottom of the chamber bottom cover plate is connected with a gear chamber cover matching groove arranged at the top of a flywheel shell through the cover lower extending end, the gear chamber cover matching groove is wedged with the cover lower extending end embedded in the gear chamber cover matching groove, the chamber cover body and the flywheel shell are vertically opposite to each other, the volume of the chamber cover body is smaller than that of the flywheel shell, compared with the prior art, the volume of the chamber cover body is greatly reduced, the chamber cover body is only responsible for covering fewer gears, the flywheel shell only needs to cover more gears, and simultaneously, the wedging design of the cover lower extending end and the gear chamber cover matching groove limits the combining position and the combining shape of the timing gear chamber cover and the flywheel shell, so that when maintaining, the timing gear chamber cover can have enough space to maintain or adjust gears and side gaps, the operation is very convenient, and the reverse gear cover is not required to be convenient to detach the flywheel cover, and the reverse extending structure is quite convenient, and the structure is more convenient when the flywheel cover is in the reverse-extending structure is required. Therefore, the timing gear chamber cover is small in size and light in weight, and the maintenance and adjustment of the gear system are facilitated.
2. The invention relates to a diesel engine rear end timing gear chamber cover system, which comprises a chamber bottom cover plate, a left connecting part, a cover downward extending end, a right connecting part and an upper connecting part, wherein the left connecting part, the cover downward extending end and the right connecting part are sequentially connected around the periphery of the chamber bottom cover plate, the top of the chamber bottom cover plate is connected with a cylinder cover through the upper connecting part, the left side and the right side of the chamber bottom cover plate are respectively connected with the front surface of a rear end plate body through the left connecting part and the right connecting part, the back surface of the rear end plate body is connected with a cylinder body and a cylinder cover, and the bottom of the chamber bottom cover plate is connected with a gear chamber cover matching groove arranged at the top of a flywheel shell through the cover downward extending end. Therefore, the invention has more connecting surfaces, stronger connecting functions and stronger firmness, and is beneficial to improving the overall rigidity.
3. In the invention, the right upper column hole and the right lower column hole are arranged on the right connecting part along the right side edge of the right connecting part, and the left first column hole, the left first half groove, the left second column hole, the left second half groove and the left third column hole are sequentially arranged on the left connecting part from top to bottom along the outer side surface of the left arc-shaped table. Therefore, the invention has stronger connection firmness and is convenient to manufacture and maintain.
4. The invention relates to a diesel engine rear end timing gear chamber cover system, wherein an upper connecting part comprises a left upper connecting surface, a middle upper connecting surface and a right upper connecting surface which are sequentially connected, wherein the bottom surface of the left upper connecting surface is connected with the top of the left connecting part, the bottom surface of the right upper connecting surface is connected with the top of the right connecting part, and the middle upper connecting surface is connected with a cylinder head cover. Therefore, the invention has stronger connection firmness and larger overall rigidity.
5. In the invention, the middle part of the chamber bottom cover plate is provided with the separation arc section, at the moment, the left connecting part, the upper connecting part and the separation arc section enclose a left cover plate area together, the right connecting part, the upper connecting part, the separation arc section and the cover downward extending end enclose a right cover plate area together, and the left cover plate area and the right cover plate area are respectively provided with a plurality of hole structures. Therefore, the invention has higher utilization rate of the internal space and lighter weight.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic perspective view of fig. 1.
Fig. 3 is a rear view of fig. 2.
Fig. 4 is a schematic illustration of the connection of the present invention to a flywheel housing.
Fig. 5 is a schematic view of the connection of the present invention to a cylinder head.
Fig. 6 is an exploded view of fig. 5.
In the figure: the oil pan 1, the cylinder block 2, the cylinder head 21, the cylinder head cover 22, the chamber cover body 3, the gear chamber cover mating seat 31, the gear chamber cover mating groove 32, the arc groove side 321, the cover downward extending end 33, the left platform portion 331, the right platform portion 332, the middle convex arc portion 333, the outer convex arc side 334, the inner convex arc side 335, the middle concave arc groove 336, the first slot nail 34, the second slot nail 35, the third slot nail 36, the upper connecting portion 37, the upper left connecting surface 371, the upper middle connecting surface 372, the upper right connecting surface 373, the upper middle connecting hole 374, the upper right connecting hole 375, the left connecting portion 38, the left arc-shaped table 381, the left first column hole 382, the left second column hole 383 a left three-pillar hole 384, a left half groove 385, a left two-half groove 386, a half groove side arc wall 387, a half groove bottom plane 388, a top notch 389, an outer notch 380, a right connecting portion 39, a right upper pillar hole 391, a right lower pillar hole 392, a room bottom cover plate 30, a partition arc section 300, a left downward screw hole 301, a bottom downward screw hole 302, a right downward screw hole 303, a right next hole 304, a right lower two-hole 305, a right lower three-hole 306, a left cover plate area 307, a right cover plate area 308, a left pillar round hole 309, a right pillar round hole 310, a right pillar waist hole 311, a flywheel housing 4, a rear end plate body 5, a No. two-drop gear 9, a crank gear 11, and a cam gear 13. The left-right orientation described herein is based on the orientation of figure one.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings and detailed description.
Referring to fig. 1 to 6, a rear end timing gear chamber cover system of a diesel engine includes a chamber cover body 3 connected with a cylinder cover 21;
the chamber cover body 3 comprises a chamber bottom cover plate 30, a left connecting part 38, a cover lower extending end 33, a right connecting part 39 and an upper connecting part 37 which are sequentially connected around the periphery of the chamber bottom cover plate, the top of the chamber bottom cover plate 30 is connected with the cylinder cover 22 through the upper connecting part 37, the left side and the right side of the chamber bottom cover plate 30 are respectively connected with the front surface of the rear end plate 5 through the left connecting part 38 and the right connecting part 39, the back surface of the rear end plate 5 is connected with the cylinder body 2 and the cylinder cover 21, the bottom of the chamber bottom cover plate 30 is connected with a gear chamber cover matching groove 32 arranged at the top of the flywheel casing 4 through the cover lower extending end 33, the gear chamber cover matching groove 32 is wedged with the cover lower extending end 33 embedded in the gear chamber cover plate, the chamber cover body 3 and the flywheel casing 4 are arranged vertically and the volume of the chamber cover body 3 is smaller than the volume of the flywheel casing 4.
The cover downward extending end 33 includes a left platform portion 331, a right platform portion 332, and a middle convex arc portion 333 protruding downward, the bottom end of the left connecting portion 38 is connected to the bottom end of the right connecting portion 39 after passing through the left platform portion 331, the middle convex arc portion 333, and the right platform portion 332 in sequence, and the heights of the left platform portion 331 and the right platform portion 332 are the same; the convex arc 333 includes an outer arc edge 334, an inner arc edge 335, and a concave arc slot 336 therebetween.
The cap down-extending end 33 is of inverted omega configuration, and the gear chamber cap mating groove 32 is of inverted omega configuration.
The right connecting portion 39 is provided with a right upper column hole 391 and a right lower column hole 392 along the right side thereof, and the right lower column hole 392 is disposed near the right end of the top of the cover lower extending end 33.
The parts near the top left end, the bottom and the top right end of the lower cover extension end 33 on the chamber bottom cover plate 30 are respectively provided with a corresponding lower left extension screw hole 301, a lower bottom extension screw hole 302 and a lower right extension screw hole 303, the lower right extension screw hole 303 is arranged near a right lower column hole 392, a right lower hole 304, a right lower two holes 305 and a right lower three holes 306 which are arranged in a triangle are arranged on the chamber bottom cover plate 30 and are positioned between the lower right extension screw hole 303 and the right lower column hole 392, and the right lower three holes 306 are lower than the right lower hole 304 and the right lower two holes 305.
The left connecting portion 38 includes a left arc-shaped table 381, a left second column hole 383, a left third column hole 384, a left half groove 385 and a left second half groove 386 formed thereon, wherein the left first column hole 382, the left half groove 385, the left second column hole 383, the left second half groove 386 and the left third column hole 384 are sequentially disposed from top to bottom along an outer side surface of the left arc-shaped table 381, and an inner side surface of the left arc-shaped table 381 is connected with the bottom cover plate 30.
The left first column hole 382, the left second column hole 383 and the left third column hole 384 are through holes, and the depths of the left half groove 385 and the left second half groove 386 are smaller than the depths of the left first column hole 382, the left second column hole 383 and the left third column hole 384; the left half groove 385 and the left half groove 386 comprise a half groove side arc wall 387 and a half groove bottom plane 388, the top surface of the half groove side arc wall 387 is a top groove opening 389, the inner side surface of the half groove side arc wall 387 is connected with the half groove bottom plane 388, and the outer side surface of the half groove side arc wall 387 is an outer notch 380.
The upper connecting portion 37 includes a left upper connecting surface 371, an upper middle connecting surface 372, and a right upper connecting surface 373, wherein the inner end of the left upper connecting surface 371 is connected with the inner end of the right upper connecting surface 373 via the upper middle connecting surface 372, the bottom surface of the left upper connecting surface 371 is connected with the top of the left connecting portion 38, the bottom surface of the right upper connecting surface 373 is connected with the top of the right connecting portion 39, and upper middle connecting holes 374 and upper right connecting holes 375 are respectively provided on the upper middle connecting surface 372 and the upper right connecting surface 373.
The right upper connecting surface 373 has an arc structure, and the side wall of the right connecting portion 39 has an arc structure.
The middle part of room bottom cover board 30 is provided with separates the arc section 300, separates the top of arc section 300 and is connected with upper junction 37, separates the bottom of arc section 300 and is connected with left connecting portion 38, lid down stretches the junction of end 33, left connecting portion 38, upper connecting portion 37, separate the arc section 300 and enclose into a left apron district 307 altogether, right connecting portion 39, upper connecting portion 37, separate arc section 300, lid down stretches end 33 and encloses into a right apron district 308 altogether, be provided with a plurality of left post round holes 309 that run through in the left apron district 307, be provided with a plurality of right post round holes 310 and right post waist hole 311 that run through in the right apron district 308, right post round hole 310 Gao Yuyou column waist hole 311 sets up, and the area of right post round hole 310 is less than the area of right post waist hole 311.
The principle of the invention is explained as follows:
the invention relates to a diesel engine rear end timing gear chamber cover system, wherein a chamber cover body in the diesel engine rear end timing gear chamber cover system comprises a chamber bottom cover plate, a left connecting part, a cover lower extending end, a right connecting part and an upper connecting part which are sequentially connected around the periphery of the chamber bottom cover plate, wherein the top of the chamber bottom cover plate is connected with a cylinder cover through the upper connecting part, the left side and the right side of the chamber bottom cover plate are respectively connected with the front surface of a rear end plate body through the left connecting part and the right connecting part, the back surface of the rear end plate body is connected with a cylinder body and the cylinder cover, the bottom of the chamber bottom cover plate is connected with a gear chamber cover matching groove arranged at the top of a flywheel shell through the cover lower extending end, and the gear chamber cover matching groove is preferably in an inverted omega structure.
Example 1:
referring to fig. 1 to 6, a rear end timing gear chamber cover system of a diesel engine includes a chamber cover body 3 connected with a cylinder cover 21; the chamber cover body 3 comprises a chamber bottom cover plate 30, a left connecting part 38, a cover lower extending end 33, a right connecting part 39 and an upper connecting part 37 which are sequentially connected around the periphery of the chamber bottom cover plate, the top of the chamber bottom cover plate 30 is connected with the cylinder cover 22 through the upper connecting part 37, the left side and the right side of the chamber bottom cover plate 30 are respectively connected with the front surface of the rear end plate 5 through the left connecting part 38 and the right connecting part 39, the back surface of the rear end plate 5 is connected with the cylinder body 2 and the cylinder cover 21, the bottom of the chamber bottom cover plate 30 is connected with a gear chamber cover matching groove 32 arranged at the top of the flywheel casing 4 through the cover lower extending end 33, the gear chamber cover matching groove 32 is wedged with the cover lower extending end 33 embedded in the gear chamber cover plate, the chamber cover body 3 and the flywheel casing 4 are arranged vertically and the volume of the chamber cover body 3 is smaller than the volume of the flywheel casing 4. The cover downward extending end 33 includes a left platform portion 331, a right platform portion 332, and a middle convex arc portion 333 protruding downward, the bottom end of the left connecting portion 38 is connected to the bottom end of the right connecting portion 39 after passing through the left platform portion 331, the middle convex arc portion 333, and the right platform portion 332 in sequence, and the heights of the left platform portion 331 and the right platform portion 332 are the same; the convex arc 333 includes an outer arc edge 334, an inner arc edge 335, and a concave arc slot 336 therebetween. Preferably, the cap down-extending end 33 is of inverted omega configuration, and the gear chamber cap mating groove 32 is of inverted omega configuration.
Example 2:
the basic content is the same as in example 1, except that:
the right connecting portion 39 is provided with a right upper column hole 391 and a right lower column hole 392 along the right side thereof, and the right lower column hole 392 is disposed near the right end of the top of the cover lower extending end 33. The parts near the top left end, the bottom and the top right end of the lower cover extension end 33 on the chamber bottom cover plate 30 are respectively provided with a corresponding lower left extension screw hole 301, a lower bottom extension screw hole 302 and a lower right extension screw hole 303, the lower right extension screw hole 303 is arranged near a right lower column hole 392, a right lower hole 304, a right lower two holes 305 and a right lower three holes 306 which are arranged in a triangle are arranged on the chamber bottom cover plate 30 and are positioned between the lower right extension screw hole 303 and the right lower column hole 392, and the right lower three holes 306 are lower than the right lower hole 304 and the right lower two holes 305.
Example 3:
the basic content is the same as in example 1, except that:
the left connecting portion 38 includes a left arc-shaped table 381, a left second column hole 383, a left third column hole 384, a left half groove 385 and a left second half groove 386 formed thereon, wherein the left first column hole 382, the left half groove 385, the left second column hole 383, the left second half groove 386 and the left third column hole 384 are sequentially disposed from top to bottom along an outer side surface of the left arc-shaped table 381, and an inner side surface of the left arc-shaped table 381 is connected with the bottom cover plate 30. The left first column hole 382, the left second column hole 383 and the left third column hole 384 are through holes, and the depths of the left half groove 385 and the left second half groove 386 are smaller than the depths of the left first column hole 382, the left second column hole 383 and the left third column hole 384; the left half groove 385 and the left half groove 386 comprise a half groove side arc wall 387 and a half groove bottom plane 388, the top surface of the half groove side arc wall 387 is a top groove opening 389, the inner side surface of the half groove side arc wall 387 is connected with the half groove bottom plane 388, and the outer side surface of the half groove side arc wall 387 is an outer notch 380.
Example 4:
the basic content is the same as in example 1, except that:
the upper connecting portion 37 includes a left upper connecting surface 371, an upper middle connecting surface 372, and a right upper connecting surface 373, wherein the inner end of the left upper connecting surface 371 is connected with the inner end of the right upper connecting surface 373 via the upper middle connecting surface 372, the bottom surface of the left upper connecting surface 371 is connected with the top of the left connecting portion 38, the bottom surface of the right upper connecting surface 373 is connected with the top of the right connecting portion 39, and upper middle connecting holes 374 and upper right connecting holes 375 are respectively provided on the upper middle connecting surface 372 and the upper right connecting surface 373. The right upper connecting surface 373 has an arc structure, and the side wall of the right connecting portion 39 has an arc structure.
Example 5:
the basic content is the same as in example 1, except that:
the middle part of room bottom cover board 30 is provided with separates the arc section 300, separates the top of arc section 300 and is connected with upper junction 37, separates the bottom of arc section 300 and is connected with left connecting portion 38, lid down stretches the junction of end 33, left connecting portion 38, upper connecting portion 37, separate the arc section 300 and enclose into a left apron district 307 altogether, right connecting portion 39, upper connecting portion 37, separate arc section 300, lid down stretches end 33 and encloses into a right apron district 308 altogether, be provided with a plurality of left post round holes 309 that run through in the left apron district 307, be provided with a plurality of right post round holes 310 and right post waist hole 311 that run through in the right apron district 308, right post round hole 310 Gao Yuyou column waist hole 311 sets up, and the area of right post round hole 310 is less than the area of right post waist hole 311.
Claims (7)
1. The utility model provides a right-time gear chamber lid system in diesel engine rear end, includes chamber lid body (3) that are connected with cylinder cap (21), its characterized in that:
the chamber cover body (3) comprises a chamber bottom cover plate (30) and a left connecting part (38), a cover downward extending end (33) and a right connecting part (39) which are sequentially connected around the periphery of the chamber bottom cover plate, the top of the chamber bottom cover plate (30) is connected with a cylinder cover (22) through the upper connecting part (37), the left side and the right side of the chamber bottom cover plate (30) are respectively connected with the front side of a rear end plate body (5) through the left connecting part (38) and the right connecting part (39), the back side of the rear end plate body (5) is connected with a cylinder body (2) and a cylinder cover (21), the bottom of the chamber bottom cover plate (30) is connected with a gear chamber cover matching groove (32) arranged at the top of a flywheel shell (4) through a cover downward extending end (33), the gear chamber cover matching groove (32) is wedged with the cover downward extending end (33) embedded in the gear chamber cover body (3) and the flywheel shell (4), the upper side and the lower side of the chamber cover body (3) are opposite to each other, and the volume of the chamber cover body (3) is smaller than the volume of the flywheel shell (4);
a right upper column hole (391) and a right lower column hole (392) are formed in the right connecting part (39) along the right side edge of the right connecting part, and the right lower column hole (392) is arranged near the right end of the top of the cover downward extending end (33);
the upper part of the chamber bottom cover plate (30) close to the top left end, the bottom and the top right end of the cover downward extending end (33) is respectively provided with a corresponding downward extending left screw hole (301), a downward extending bottom screw hole (302) and a downward extending right screw hole (303), the downward extending right screw hole (303) is arranged close to a right lower column hole (392), a right lower hole (304), a right lower two holes (305) and a right lower three hole (306) which are arranged in a triangle are arranged on the part of the chamber bottom cover plate (30) between the downward extending right screw hole (303) and the right lower column hole (392), and the right lower three hole (306) is lower than the right lower hole (304) and the right lower two holes (305);
the middle part of room end apron (30) is provided with separates arc section (300), and the top of separating arc section (300) is connected with last connecting portion (37), and the bottom of separating arc section (300) is connected with the junction of left connecting portion (38), lid lower extreme (33), left side connecting portion (38), go up connecting portion (37), separate arc section (300) and enclose into a left apron district (307) altogether, right connecting portion (39), go up connecting portion (37), separate arc section (300), lid lower extreme (33) enclose into a right apron district (308) altogether, be provided with a plurality of left post round holes (309) that run through in left apron district (307), be provided with a plurality of right post round holes (310) and right post waist hole (311) that run through in right apron district (308), right post round hole (310) are high Yu Youzhu waist hole (311) set up, and the area of right post round hole (310) is less than the area of right post waist hole (311).
2. The rear end timing gear chamber cover system of a diesel engine of claim 1, wherein: the cover downward extending end (33) comprises a left platform part (331), a right platform part (332) and a middle convex arc part (333) protruding downwards, the bottom end of the left connecting part (38) is connected with the bottom end of the right connecting part (39) after passing through the left platform part (331), the middle convex arc part (333) and the right platform part (332) in sequence, and the heights of the left platform part (331) and the right platform part (332) are the same; the middle convex arc part (333) comprises an outer convex arc edge (334), an inner convex arc edge (335) and a middle concave arc groove (336) clamped between the outer convex arc edge and the inner convex arc edge.
3. A rear end timing gear chamber cover system for a diesel engine as set forth in claim 2, wherein: the downward extending end (33) of the cover is of an inverted omega structure, and the matching groove (32) of the gear chamber cover is of an inverted omega structure.
4. A rear end timing gear chamber cover system for a diesel engine according to claim 1, 2 or 3, wherein: the left connecting part (38) comprises a left arc-shaped table (381) and a left first column hole (382), a left second column hole (383), a left third column hole (384), a left half groove (385) and a left second half groove (386) which are formed in the left arc-shaped table (381), wherein the left first column hole (382), the left half groove (385), the left second column hole (383), the left second half groove (386) and the left third column hole (384) are sequentially arranged from top to bottom along the outer side surface of the left arc-shaped table (381), and the inner side surface of the left arc-shaped table (381) is connected with the chamber bottom cover plate (30).
5. The rear end timing gear chamber cover system of a diesel engine according to claim 4, wherein: the left first column hole (382), the left second column hole (383) and the left third column hole (384) are through holes, and the depths of the left half groove (385) and the left half groove (386) are smaller than those of the left first column hole (382), the left second column hole (383) and the left third column hole (384); the left half groove (385) and the left half groove (386) comprise a half groove side arc wall (387) and a half groove bottom plane (388), the top surface of the half groove side arc wall (387) is a top groove opening (389), the inner side surface of the half groove side arc wall (387) is connected with the half groove bottom plane (388), and the outer side surface of the half groove side arc wall (387) is an outer groove opening (380).
6. A rear end timing gear chamber cover system for a diesel engine according to claim 1, 2 or 3, wherein: the upper connecting portion (37) comprises a left upper connecting surface (371), an upper middle connecting surface (372) and a right upper connecting surface (373), wherein the inner end of the left upper connecting surface (371) is connected with the inner end of the right upper connecting surface (373) through the upper middle connecting surface (372), the bottom surface of the left upper connecting surface (371) is connected with the top of the left connecting portion (38), the bottom surface of the right upper connecting surface (373) is connected with the top of the right connecting portion (39), and upper middle connecting holes (374) and upper right connecting holes (375) are respectively formed in the upper middle connecting surface (372) and the upper right connecting surface (373).
7. The rear end timing gear chamber cover system of a diesel engine of claim 6, wherein: the right upper connecting surface (373) is of an arc-shaped structure, and the side wall of the right connecting part (39) is of an arc-shaped structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810794309.0A CN108915888B (en) | 2018-07-19 | 2018-07-19 | Timing gear chamber cover system at rear end of diesel engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810794309.0A CN108915888B (en) | 2018-07-19 | 2018-07-19 | Timing gear chamber cover system at rear end of diesel engine |
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| CN108915888B true CN108915888B (en) | 2023-10-20 |
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| CN111058964A (en) * | 2019-12-31 | 2020-04-24 | 广西玉柴机器股份有限公司 | Compact general lightweight engine structure |
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