CN209278322U - A kind of small end of connecting rod system of trough of belt - Google Patents
A kind of small end of connecting rod system of trough of belt Download PDFInfo
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- CN209278322U CN209278322U CN201821682438.2U CN201821682438U CN209278322U CN 209278322 U CN209278322 U CN 209278322U CN 201821682438 U CN201821682438 U CN 201821682438U CN 209278322 U CN209278322 U CN 209278322U
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- branch slot
- arc portion
- connecting rod
- inner groovy
- centre bore
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Abstract
A kind of small end of connecting rod system of trough of belt, the centre bore opened up including small head end and its middle part, the front at the position of nearly centre bore bottom end on the small head end offers an inner groovy on the back side respectively, the inner groovy is unidirectionally open outwardly, the inner groovy includes sequentially connected left arc portion, middle arc portion and right arc portion, the central axes of middle arc portion and the central axes of centre bore coincide, left arc portion, right arc portion are using the central axes of middle arc portion as the symmetrical setting of line of symmetry, the left end of left arc portion is arranged higher than its right end, and the right end of right arc portion is arranged higher than its left end.The design can not only reduce the edge load stress of bushing, so that lining of connecting rod small end is smaller than pressing, and rigidity is qualified, be able to satisfy light-weight design requirement.
Description
Technical field
The utility model relates to a kind of link mechanisms, belong to connection rod of automobile engine assembly design field more particularly to one
The small end of connecting rod system of kind trough of belt, it is particularly applicable to reduce the edge load stress of bushing, so that lining of connecting rod small end is smaller than pressing.
Background technique
Connecting rod is the nucleus movement part of engine, mainly includes big end, connecting rod shank and small end of connecting rod, small end of connecting rod
Move reciprocatingly together with piston through piston pin, big end and crank-pin be connected and crankshaft together with make rotating motion.Thus, even
Bar microcephaly is subjected to the huge gas pressure from top land, will also be relative to piston oscillation.It is limited to piston cavity
Size, the pressure (i.e. than pressure) that small end of connecting rod unit area is born is relatively high, and piston pin rigidity is lower than small end of connecting rod, in height
Under the action of explosion pressure, the deformation of piston pin can be greater than small end of connecting rod and deform, so as to cause lining of connecting rod small end EDGE CONTACT,
Edge load stress is excessive, and with the continuous improvement of detonation pressure upgrading and engine reinforcing degree, small end of connecting rod end liner is covered than pressure
Also it is continuously increased, therefore how to reduce the main points that lining of connecting rod small end also becomes link design than pressing.
At present reduce small end of connecting rod than pressure method there are mainly three types of:
1, increase small end of connecting rod bore dia or small head width, it is corresponding to will increase piston pin size, to increase work
Plug, piston pin, connecting rod weight and piston compression is high and length of connecting rod are unfavorable for the light-weight design of engine and compact in this way
Property；
2, high-grade connecting rob bushing material is selected, this method can significantly promote connecting rob bushing unit price, be unfavorable for sending out
The design of motivation cost declining；
3, design abnormity or tubaeform bushing pin hole, it is different that such connecting rod ASSY manufacturer needs to increase by one of cumbersome processing
The technique of shape molded line, will increase process costs, equally be unfavorable for cost declining design.
Authorization Notice No. is CN2585983Y, and authorized announcement date is that the utility model patent on November 12nd, 2003 discloses
A kind of crank link mechanism of single cylinder diesel, in crank effective cross-section at be in symmetrical camber, two cranks are inessential
Position is concave, and small end of connecting rod is wedge shaped, and the piston seat matched with lining of connecting rod small end constitutes the piston boss chain of small span
Binding structure.Although the design can be improved the rigidity and intensity of connecting rod ASSY, its still have lining of connecting rod small end than pressure compared with
Big defect.
The information for disclosing the background technology part is merely intended to increase the understanding to the general background of present patent application, without
It should be considered as recognizing or implying in any form that the information constitutes existing skill already known to those of ordinary skill in the art
Art.
Summary of the invention
The purpose of the utility model is to overcome lining of connecting rod small end existing in the prior art than pressing biggish defect and asking
Topic provides a kind of small end of connecting rod system of the lining of connecting rod small end than pressing lesser trough of belt.
In order to achieve the above object, the technical solution of the utility model is: a kind of small end of connecting rod system of trough of belt, including
The bottom end of the centre bore that small head end and its middle part open up, the small head end is connected through shaft with stub end；On the small head end
An inner groovy is offered respectively on the front at the position of nearly centre bore bottom end, the back side, which is unidirectionally open outwardly.
The inner groovy includes left arc portion, middle arc portion and right arc portion, arc portion and right arc in the right end warp of the left arc portion
The left end in portion is connected, and the central axes of middle arc portion and the central axes of centre bore coincide, and left arc portion, right arc portion are with middle arc portion
Central axes are the symmetrical setting of line of symmetry；The left end of the left arc portion is arranged higher than its right end, the right arc portion
Right end is arranged higher than its left end, and the right end of the left end of left arc portion, right arc portion is camber line structure.
The cross section transverse of the inner groovy is isosceles trapezoidal structure comprising collar extension side, interior bottom edge and is sandwiched between the two
Upper waist edge, lower waist edge, the collar extension side be linear structure, the interior bottom edge, upper waist edge, lower waist edge are all camber line structure, and
Collar extension hem width is arranged in interior bottom edge.
The upper region between centre bore, shaft of small head end is the area Cheng Gan, on the front in the area Cheng Gan, the back side point
An inner groovy is not offered；The width ratio in the groove depth of the inner groovy and the area Cheng Gan is 0.1-0.3, the groove width of inner groovy with
The radius ratio of centre bore is 0.05-0.1, and the left and right ends of inner groovy and the center line of centre bore intersect to form length respectively
Angle 6, the size at the length angle are 45 ° -60 °.
Edge spacing between the top edge of the inner groovy and the feather edge of centre bore is 1-3mm.
The groove depth is 6-8mm, and groove width is 4-5mm, and the size at length angle is 45 °-60 °, and edge spacing is 1-
3mm。
Position in the area Cheng Gan positioned at inner groovy surrounding is provided with an interior incisal bevel wide at the top and narrow at the bottom, and the inscribe is oblique
The top margin in face intersects with centre bore, and the bottom edge of interior incisal bevel is arranged lower than inner groovy.
It is embedded with the connecting rob bushing of annular in the centre bore, is provided with oil-way on the side wall of the connecting rob bushing.
The oil-way includes upper left branch slot, upper middle branch slot, upper right branch slot, lower left branch slot and lower right branch slot, it is described on
Left branch slot, upper middle branch slot, upper right branch slot bottom end communicated through medial launder with the top of lower left branch slot, lower right branch slot, and upper left branch
Slot, upper right branch slot are the L-shaped structure that angle is obtuse angle.
The upper middle branch flute length is arranged in upper left branch slot, upper right branch slot, and more than upper left branch slot, upper right branch slot middle branch slot is pair
Claim the symmetrical setting of line, more than the lower left branch slot, the lower right branch slot downward extended line of middle branch slot is line of symmetry in left and right
It is symmetrical arranged；Angle between the upper left branch slot and lower left branch slot is acute angle, the angle between upper right branch slot and lower right branch slot
For acute angle, the angle between lower left branch slot and lower right branch slot is obtuse angle.
Compared with prior art, the utility model has the following beneficial effects:
1, in a kind of small end of connecting rod system of trough of belt of the utility model, the upper area between centre bore, shaft of small head end
The area Yu Weichenggan, the position of nearly centre bore bottom end offers an inner groovy, the indent respectively on the front in the area Cheng Gan, the back side
Slot is unidirectionally open outwardly, in application, the region being clipped between inner groovy, small head end also can after piston pin bearing is deformed by detonation pressure
Deformation, bending to provide space for connecting rob bushing bending, and then expand the contact area between piston pin, connecting rob bushing,
Guarantee coming into contact in a large area between piston pin and connecting rob bushing, to reduce the ratio pressure of bushing receiving, substantially reduces edge load stress.
Therefore, the utility model can reduce the edge load stress of bushing, so that lining of connecting rod small end is smaller than pressing.
2, in a kind of small end of connecting rod system of trough of belt of the utility model, the structure of internal groove has exclusive, i.e. indent
The groove depth of slot and the width ratio in the area Cheng Gan are 0.1-0.3, and the groove width of inner groovy and the radius ratio of centre bore are 0.05-0.1, interior
The left and right ends of groove and the center line of centre bore intersect to form length angle 6 respectively, and the size at the length angle is 45 ° -60 °,
Edge spacing between the top edge of inner groovy and the feather edge of centre bore is 1-3mm, which can realize small end of connecting rod
On the basis of bushing is more lesser than pressure, it is ensured that the rigidity of shaft, to ensure the normal use of entire link mechanism.Therefore, this is practical
Novel not only lining of connecting rod small end is smaller than pressing, but also rigidity is qualified.
3, in a kind of small end of connecting rod system of trough of belt of the utility model, inner groovy includes sequentially connected left arc portion, middle arc
Portion and right arc portion, the central axes of middle arc portion and the central axes of centre bore coincide, and left arc portion, right arc portion are with the central axes of middle arc portion
Left end for the symmetrical setting of line of symmetry, left arc portion is arranged higher than its right end, and it is left that the right end of right arc portion is higher than it
End setting, the design is so that " smiling face " structure that inner groovy has a kind of bilateral symmetry and both ends upwarp, this kind of structure are being answered
Used time can make inner groovy more uniform by pressure, preferably can bend or deform, be become with the deformation with connecting rob bushing
Gesture is consistent, does not limit the bending of connecting rob bushing, to realize coming into contact in a large area between piston pin and connecting rob bushing, even
It completely attaches to, reduces edge load stress to the full extent, especially when the cross section transverse of inner groovy is isosceles trapezoidal structure, effect is more
It is good.Therefore, the utility model is able to achieve the complete deformation of connecting rob bushing, it is ensured that lining of connecting rod small end is smaller than pressing.
4, in a kind of small end of connecting rod system of trough of belt of the utility model, the oil-way being arranged on connecting rob bushing side wall includes
Upper left branch slot, upper middle branch slot, upper right branch slot, lower left branch slot and lower right branch slot, five branch slots are common in the same medial launder, it is upper in
The length longest of branch slot, upper left branch slot, upper right branch slot are symmetrical set, and lower left branch slot, lower right branch slot are symmetrical set, and
There is exclusive to the angle between branch slot, which is not only conducive to expand the collection space of lubricating oil, more conducive to storing
Lubricating oil extends conducive to long-term existence of the lubricating oil film in bushing and uses the time, and expands contact of the oil groove with bushing
Area not only entered in oil groove convenient for lubricating oil, but also was convenient for the formation of lubricating oil film, improved lubricant effect.Therefore, the utility model
Not only lubricant effect is preferable, but also longer using the time.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the enlarged diagram of inner groovy in Fig. 1.
Fig. 3 is the side sectional view of Fig. 1.
Fig. 4 is the schematic perspective view of Fig. 1.
Fig. 5 is the connection schematic diagram of the utility model and piston pin.
In figure: shaft 2, the area Cheng Gan 3, small head end 4, centre bore 5, inner groovy 6, left arc portion 61, middle arc portion 62, right arc portion
63, groove depth 64, groove width 65, length angle 66, edge spacing 67, interior incisal bevel 68, cross section transverse 7, collar extension side 71, interior bottom edge 72,
Upper waist edge 73, lower waist edge 74, connecting rob bushing 8, oil-way 9, upper left branch slot 91, upper middle branch slot 92, upper right branch slot 93, lower left branch
Slot 94, lower right branch slot 95, medial launder 96, piston pin 10.
Specific embodiment
The utility model is described in further detail below in conjunction with Detailed description of the invention and specific embodiment.
Referring to Fig. 1 to Fig. 5, a kind of small end of connecting rod system of trough of belt, including the centre bore 5 that small head end 4 and its middle part open up,
The bottom end of the small head end 4 is connected through shaft 2 with stub end；
The front at the position of nearly 5 bottom end of centre bore on the small head end 4 offers an inner groovy 6 on the back side respectively, should
Inner groovy 6 is unidirectional outwardly to be open.
The inner groovy 6 includes left arc portion 61, middle arc portion 62 and right arc portion 63, arc in the right end warp of the left arc portion 61
Portion 62 is connected with the left end of right arc portion 63, and the central axes of middle arc portion 62 and the central axes of centre bore 5 coincide, left arc portion
61, right arc portion 63 is using the central axes of middle arc portion 62 as the symmetrical setting of line of symmetry；The left end of the left arc portion 61 is higher than
The right end of the setting of its right end, the right arc portion 63 is arranged higher than its left end, and the left end of left arc portion 61, right arc portion 63
Right end be camber line structure.
The cross section transverse 7 of the inner groovy 6 is isosceles trapezoidal structure comprising collar extension side 71, interior bottom edge 72 and is sandwiched in two
Upper waist edge 73, lower waist edge 74 between person, the collar extension side 71 are linear structure, the interior bottom edge 72, upper waist edge 73, lower waist edge
74 be all camber line structure, and collar extension side 71 is wider than interior bottom edge 72 and is arranged.
Region on the small head end 4 between centre bore 5, shaft 2 is the area Cheng Gan 3, the front in the area Cheng Gan 3, back
An inner groovy 6 is offered on face respectively；The groove depth 64 of the inner groovy 6 and the width ratio in the area Cheng Gan 3 are 0.1-0.3, indent
The groove width 65 of slot 6 and the radius ratio of centre bore 5 are 0.05-0.1, the left and right ends of inner groovy 6 and the center line point of centre bore 5
Length angle 66 is not intersected to form, and the size at the length angle 66 is 45 ° -60 °.
Edge spacing 67 between the top edge of the inner groovy 6 and the feather edge of centre bore 5 is 1-3mm.
The groove depth 64 is 6-8mm, and groove width 65 is 4-5mm, and the size at length angle 66 is 45 °-60 °, edge spacing 67
For 1-3mm.
Position in the area Cheng Gan 3 positioned at 6 surrounding of inner groovy is provided with an interior incisal bevel 68 wide at the top and narrow at the bottom, this is interior
The top margin of incisal bevel 68 intersects with centre bore 5, and the bottom edge of interior incisal bevel 68 is arranged lower than inner groovy 6.
It is embedded with the connecting rob bushing 8 of annular in the centre bore 5, is provided with oil-way on the side wall of the connecting rob bushing 8
9。
The oil-way 9 includes upper left branch slot 91, upper middle branch slot 92, upper right branch slot 93, lower left branch slot 94 and lower right branch
Slot 95, the upper left branch slot 91, upper middle branch slot 92, upper right branch slot 93 bottom end through medial launder 96 and lower left branch slot 94, lower right branch
The top of slot 95 communicates, and upper left branch slot 91, upper right branch slot 93 are the L-shaped structure that angle is obtuse angle.
The upper middle branch slot 92 is longer than left branch slot 91, the setting of upper right branch slot 93, upper left branch slot 91,93 or more upper right branch slot
Middle branch slot 92 is the symmetrical setting of line of symmetry, the lower left branch slot 94, the middle branch slot 92 of 95 or more lower right branch slot to downward
Long line is the symmetrical setting of line of symmetry；Angle between the upper left branch slot 91 and lower left branch slot 94 is acute angle, upper right branch
Angle between slot 93 and lower right branch slot 95 is acute angle, and the angle between lower left branch slot 94 and lower right branch slot 95 is obtuse angle.
The principles of the present invention are described as follows:
This patent is aiming at the problem that existing raising lining of connecting rod small end of engine bearing capacity, by removing small end of connecting rod
(i.e. small head end 4) a part of material of lower end area (opens up inner groovy 6, the inner groovy 6 is between centre bore 5, shaft 2),
The edge stiffness of small end of connecting rod is reduced, is allowed to adapt to deformation of the piston pin bearing after by detonation pressure, to increase piston pin and connecting rod
The fitting area of bushing improves bearing capacity, and the side that can also eliminate on connecting rob bushing carries.Do not increasing connecting rod small end hole (center
Hole 5) on the basis of size and cost, the bearing capacity of connecting rob bushing is effectively raised, to also meet engine light weight
Change design and compactedness requirement.The utility model is also applied for the connecting rod of linerless nested structure.In addition, more preferably implementing effect to obtain
Fruit, the preferably area Cheng Gan 3 be structure wide at the top and narrow at the bottom, the area Cheng Gan 3, centre bore 5 junction be wider than the handover in the area Cheng Gan 3, shaft 2
Place, and small head end 4 is wider than the setting of shaft 2.
Specifically, connecting rod in actual work, piston pin 10 can be deformed by the pressure that piston transmits, existing
There is link mechanism since microcephaly's rigidity is less than piston pin 10, when 10 stress deformation of piston pin, piston pin 10 and connecting rod is caused to serve as a contrast
It is only contacted in two edges region between set 8, contact area is substantially reduced, and the ratio pressure for causing connecting rob bushing 8 to bear increases.This is practical
It is novel to remove a part of material on the shaft 2 close from 8 lower end of connecting rob bushing to obtain inner groovy 6, when 10 stress of piston pin
When deformation, the removal material area rigidity is smaller, and being sandwiched in the region between small head end 4, inner groovy 6 can deform with piston pin 10
Carry out adaptive curved, the large area even full contact between guarantee piston pin 10 and connecting rob bushing 8, to reduce connecting rod lining
The ratio pressure that set 8 is born is eliminated side and is carried.In order to guarantee rigidity of the deformation of small end of connecting rod adaptability without influencing connecting rod, inner groovy 6
The structural parameters such as groove depth, groove width have exclusive.
Embodiment 1:
Referring to Fig. 1 to Fig. 5, a kind of small end of connecting rod system of trough of belt, including the centre bore 5 that small head end 4 and its middle part open up,
The bottom end of the small head end 4 is connected through shaft 2 with stub end；The position of nearly 5 bottom end of centre bore is being just on the small head end 4
An inner groovy 6 is offered on face, the back side respectively, the inner groovy 6 is unidirectional outwardly to be open.
Embodiment 2:
Basic content with embodiment 1, the difference is that:
The inner groovy 6 includes left arc portion 61, middle arc portion 62 and right arc portion 63, arc in the right end warp of the left arc portion 61
Portion 62 is connected with the left end of right arc portion 63, and the central axes of middle arc portion 62 and the central axes of centre bore 5 coincide, left arc portion
61, right arc portion 63 is using the central axes of middle arc portion 62 as the symmetrical setting of line of symmetry；The left end of the left arc portion 61 is higher than
The right end of the setting of its right end, the right arc portion 63 is arranged higher than its left end, and the left end of left arc portion 61, right arc portion 63
Right end be camber line structure.It is preferred that the cross section transverse 7 of the inner groovy 6 is isosceles trapezoidal structure comprising collar extension side 71,
Interior bottom edge 72 and it is sandwiched in upper waist edge 73, lower waist edge 74 between the two, the collar extension side 71 is linear structure, the interior bottom edge
72, upper waist edge 73, lower waist edge 74 are all camber line structure, and collar extension side 71 is wider than interior bottom edge 72 and is arranged.
Embodiment 3:
Basic content with embodiment 1, the difference is that:
Region on the small head end 4 between centre bore 5, shaft 2 is the area Cheng Gan 3, the front in the area Cheng Gan 3, back
An inner groovy 6 is offered on face respectively；The groove depth 64 of the inner groovy 6 and the width ratio in the area Cheng Gan 3 are 0.1-0.3, indent
The groove width 65 of slot 6 and the radius ratio of centre bore 5 are 0.05-0.1, the left and right ends of inner groovy 6 and the center line point of centre bore 5
Length angle 66 is not intersected to form, and the size at the length angle 66 is 45 ° -60 °.The top edge of the inner groovy 6 and centre bore 5
Feather edge between edge spacing 67 be 1-3mm.
Embodiment 4:
Basic content with embodiment 1, the difference is that:
It is embedded with the connecting rob bushing 8 of annular in the centre bore 5, is provided with oil-way on the side wall of the connecting rob bushing 8
9.The oil-way 9 includes upper left branch slot 91, upper middle branch slot 92, upper right branch slot 93, lower left branch slot 94 and lower right branch slot 95, institute
State top of the bottom end of left branch slot 91, upper middle branch slot 92, upper right branch slot 93 through medial launder 96 and lower left branch slot 94, lower right branch slot 95
End communicates, and upper left branch slot 91, upper right branch slot 93 are the L-shaped structure that angle is obtuse angle.The upper middle branch slot 92 is longer than a left side
Branch slot 91, the setting of upper right branch slot 93, upper left branch slot 91, the middle branch slot 92 of 93 or more upper right branch slot, which are that line of symmetry is symmetrical, to be set
Set, the lower left branch slot 94, the middle branch slot 92 of 95 or more lower right branch slot downward extended line be the symmetrical setting of line of symmetry；Institute
The angle stated between left branch slot 91 and lower left branch slot 94 is acute angle, and the angle between upper right branch slot 93 and lower right branch slot 95 is sharp
Angle, the angle between lower left branch slot 94 and lower right branch slot 95 is obtuse angle.
Claims (10)
1. the small end of connecting rod system of a kind of trough of belt, including the centre bore (5) that small head end (4) and its middle part open up, the small head end
(4) bottom end is connected through shaft (2) with stub end, it is characterised in that:
The front at the position of nearly centre bore (5) bottom end on the small head end (4) offers an inner groovy (6) on the back side respectively,
The inner groovy (6) is unidirectional outwardly to be open.
2. a kind of small end of connecting rod system of trough of belt according to claim 1, it is characterised in that: the inner groovy (6) includes
Left arc portion (61), middle arc portion (62) and right arc portion (63), arc portion (62) and right arc portion in the right end warp of the left arc portion (61)
(63) left end is connected, and the central axes of middle arc portion (62) and the central axes of centre bore (5) coincide, left arc portion (61), the right side
Arc portion (63) is using the central axes of middle arc portion (62) as the symmetrical setting of line of symmetry；The left end of the left arc portion (61) is higher than
The right end of the setting of its right end, the right arc portion (63) is arranged higher than its left end, and the left end of left arc portion (61), right arc
The right end in portion (63) is camber line structure.
3. a kind of small end of connecting rod system of trough of belt according to claim 2, it is characterised in that: the cross of the inner groovy (6)
Truncation surface (7) is isosceles trapezoidal structure comprising collar extension side (71), interior bottom edge (72) and is sandwiched in upper waist edge between the two
(73), lower waist edge (74), the collar extension side (71) are linear structure, the interior bottom edge (72), upper waist edge (73), lower waist edge (74)
It is all camber line structure, and collar extension side (71) are wider than interior bottom edge (72) setting.
4. a kind of small end of connecting rod system of trough of belt according to claim 1,2 or 3, it is characterised in that: the small head end (4)
The upper region positioned at centre bore (5), shaft (2) between is the area Cheng Gan (3), is opened up respectively on the front in the area Cheng Gan (3), the back side
There is an inner groovy (6)；The groove depth (64) of the inner groovy (6) and the width ratio of the area Cheng Gan (3) are 0.1-0.3, inner groovy
(6) radius ratio of groove width (65) and centre bore (5) is 0.05-0.1, left and right ends and centre bore (5) of inner groovy (6)
Center line intersects to form length angle (66) respectively, and the size at the length angle (66) is 45 ° -60 °.
5. a kind of small end of connecting rod system of trough of belt according to claim 4, it is characterised in that: the inner groovy (6) it is upper
Edge spacing (67) between the feather edge in margin and center hole (5) is 1-3mm.
6. a kind of small end of connecting rod system of trough of belt according to claim 4, it is characterised in that: the groove depth (64) is 6-
8mm, groove width (65) are 4-5mm, and the size of length angle (66) is 45 °-60 °, and edge spacing (67) is 1-3mm.
7. a kind of small end of connecting rod system of trough of belt according to claim 4, it is characterised in that: the area Cheng Gan (3) is upper
The position of inner groovy (6) surrounding is provided with an interior incisal bevel (68) wide at the top and narrow at the bottom, the top margin of the interior incisal bevel (68) with
The bottom edge of centre bore (5) intersection, interior incisal bevel (68) is arranged lower than inner groovy (6).
8. a kind of small end of connecting rod system of trough of belt according to claim 1,2 or 3, it is characterised in that: the centre bore (5)
In be embedded with the connecting rob bushing (8) of annular, be provided with oil-way (9) on the side wall of the connecting rob bushing (8).
9. a kind of small end of connecting rod system of trough of belt according to claim 8, it is characterised in that: oil-way (9) packet
Include left branch slot (91), upper middle branch slot (92), upper right branch slot (93), lower left branch slot (94) and lower right branch slot (95), the upper left side
Branch slot (91), upper middle branch slot (92), upper right branch slot (93) bottom end through medial launder (96) and lower left branch slot (94), lower right branch slot
(95) top communicates, and upper left branch slot (91), upper right branch slot (93) are the L-shaped structure that angle is obtuse angle.
10. a kind of small end of connecting rod system of trough of belt according to claim 9, it is characterised in that: the upper middle branch slot (92)
It is longer than left branch slot (91), upper right branch slot (93) setting, more than upper left branch slot (91), upper right branch slot (93) middle branch slot (92) is pair
Claim the symmetrical setting of line, more than the lower left branch slot (94), lower right branch slot (95) the downward extended line of middle branch slot (92) is
The symmetrical setting of line of symmetry；Angle between the upper left branch slot (91) and lower left branch slot (94) is acute angle, upper right branch slot
(93) angle between lower right branch slot (95) is acute angle, and the angle between lower left branch slot (94) and lower right branch slot (95) is blunt
Angle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821682438.2U CN209278322U (en) | 2018-10-17 | 2018-10-17 | A kind of small end of connecting rod system of trough of belt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821682438.2U CN209278322U (en) | 2018-10-17 | 2018-10-17 | A kind of small end of connecting rod system of trough of belt |
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| CN209278322U true CN209278322U (en) | 2019-08-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253150A (en) * | 2018-10-17 | 2019-01-22 | 东风商用车有限公司 | A kind of small end of connecting rod system of trough of belt |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253150A (en) * | 2018-10-17 | 2019-01-22 | 东风商用车有限公司 | A kind of small end of connecting rod system of trough of belt |
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