CN213730188U - Assembly fixture of small-end eccentric variable compression ratio connecting rod assembly - Google Patents
Assembly fixture of small-end eccentric variable compression ratio connecting rod assembly Download PDFInfo
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- CN213730188U CN213730188U CN202022501087.4U CN202022501087U CN213730188U CN 213730188 U CN213730188 U CN 213730188U CN 202022501087 U CN202022501087 U CN 202022501087U CN 213730188 U CN213730188 U CN 213730188U
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Abstract
The utility model belongs to the technical field of the assembly of engine parts, and discloses an assembly fixture of a small-head eccentric variable compression ratio connecting rod assembly, which comprises a base, a large-head pressing plate and a small-head pressing plate, wherein the base is provided with a large-head positioning boss, a small-head positioning boss and a supporting block; one end of the big end pressing plate is rotatably connected with the base, and the other end of the big end pressing plate is connected with the big end positioning boss so as to press and fix the big end on the big end positioning boss; one end of the small head pressing plate is rotatably connected to the base, and the other end of the small head pressing plate is connected to the supporting block so as to press and fix the small head end on the small head positioning boss; the through hole on the eccentric wheel bracket can be arranged on any one positioning piece symmetrically in a penetrating way for positioning. The utility model discloses can inject stub end, microcephaly end eccentric wheel and eccentric wheel support respectively, realize the three point location to microcephaly eccentric formula variable compression ratio connecting rod assembly, be convenient for to the location of eccentric wheel and eccentric wheel support to weld fixture is carried out respectively to the two sides of microcephaly end.
Description
Technical Field
The utility model relates to an engine parts assembles technical field, especially relates to an assembly fixture of little first eccentric variable compression ratio connecting rod assembly.
Background
At present, a lot of researches are carried out in the technical field of Variable Compression Ratio (VCR), and a lot of patents are also applied, but due to the influence of a plurality of factors such as structure, control and reliability, there is almost no example of applying the Variable Compression Ratio (VCR) to the engine in mass production. In the prior art, an eccentric variable compression ratio connecting rod assembly has two types of small-end eccentricity and large-end eccentricity, wherein when the small-end eccentric variable compression ratio connecting rod assembly is assembled, an eccentric wheel and an eccentric wheel bracket at a small end need to be welded and connected, so that an assembly tool is needed for positioning the eccentric wheel and the eccentric wheel bracket, and the assembly tool for the small-end eccentric variable compression ratio connecting rod assembly is not available at present.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an assembly fixture of little head eccentric formula variable compression ratio connecting rod assembly to solve the eccentric wheel and the eccentric wheel support of little head end the location problem in the welded fastening in-process.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides an assembly fixture of little first eccentric formula variable compression ratio connecting rod assembly, includes:
the base is provided with a large-head positioning boss, a small-head positioning boss and a supporting block;
the large-head pressing plate is arranged on the base, one end of the large-head pressing plate is rotatably connected with the base, the other end of the large-head pressing plate is connected with the large-head positioning boss, and the large-head pressing plate is configured to press and fix a large-head end on the large-head positioning boss;
the small head pressing plate is arranged on the base, one end of the small head pressing plate is rotatably connected to the base and is positioned on one side of the small head positioning boss, the other end of the small head pressing plate is connected to the supporting block and is positioned on the other side of the small head positioning boss, and the small head pressing plate is configured to press and fix the small head end on the small head positioning boss;
the positioning pieces are arranged on the base, the two positioning pieces are symmetrically arranged on the base relative to the small-head positioning boss, and any one of the positioning pieces can be penetrated through by a through hole in the eccentric wheel support of the small head end for positioning.
Optionally, the assembly fixture for the small-end eccentric variable compression ratio connecting rod assembly further comprises two supporting seats, the two supporting seats are arranged on the base, and the two large-end pressing plates are respectively and rotatably connected to the two supporting seats.
Optionally, the assembly fixture for the small-end eccentric variable compression ratio connecting rod assembly further comprises two support frames, the two support frames are arranged on the base and located on two sides of the support block, and the two small-end pressing plates are respectively and rotatably connected to the two support frames.
Optionally, a positioning hole is formed in the base, and the positioning piece penetrates through the positioning hole.
Optionally, the positioning element is a pin rod inserted into the positioning hole.
Optionally, a central hole is formed in the large head positioning boss, and the large head pressing plate and the large head positioning boss are connected through the central hole by a first connecting piece.
Optionally, the assembly fixture for the small-end eccentric variable compression ratio connecting rod assembly further comprises a sleeve, the sleeve is arranged between the large-end positioning boss and the large-end pressing plate, and the first connecting piece can penetrate through the sleeve and the central hole in sequence.
Optionally, the small-head pressing plate is connected with the supporting block through a second connecting piece, and the number of the second connecting pieces is at least two.
Optionally, the first connecting piece and the second connecting piece are both bolts.
Optionally, the small-head pressing plate is a U-shaped member, the open end of the small-head pressing plate is rotatably connected to the supporting frame, and the top end of the small-head pressing plate is connected to the supporting block.
The utility model has the advantages that:
the utility model discloses an assembly fixture of little eccentric formula variable compression ratio connecting rod assembly through set up major part clamp plate, little head clamp plate and setting element on the base, has injectd major part end, little head end eccentric wheel and eccentric wheel support respectively, realizes the three point location to little eccentric formula variable compression ratio connecting rod assembly, is convenient for to the location of eccentric wheel and eccentric wheel support to carry out welded fastening. Two positioning pieces are symmetrically arranged on the base, so that the A, B two surfaces of the small end can be positioned and welded conveniently.
Drawings
Fig. 1 is a schematic view of an overall structure of an assembly fixture of a small-end eccentric variable compression ratio connecting rod assembly according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a base in an embodiment of the present invention;
FIG. 3 is a schematic view of the structure of the small end of the eccentric variable compression ratio connecting rod assembly of the small end of the embodiment of the present invention;
FIG. 4 is a schematic view illustrating the assembly fixture for the eccentric type connecting rod assembly with variable compression ratio of small end for welding and positioning the surface A of the small end according to the embodiment of the present invention;
fig. 5 is a schematic view illustrating the assembly fixture of the eccentric variable compression ratio connecting rod assembly with small head for welding and positioning the B surface of the small head end in the embodiment of the present invention.
In the figure:
100. a big head end; 200 small head ends; 2001. an eccentric wheel; 2002. an eccentric wheel bracket; 2003. a through hole;
1. a base; 11. a large head positioning boss; 111. a central bore; 12. a small head positioning boss; 13. a support block; 14. a supporting seat; 15. a support frame; 16. positioning holes; 2. a big head pressing plate; 3. a small-head pressing plate; 4. a positioning member; 5. a first connecting member; 6. a sleeve; 7. a second connecting member.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The utility model provides an assembly fixture of a small-end eccentric variable compression ratio connecting rod assembly, as shown in figures 3-5, the small-end eccentric variable compression ratio connecting rod assembly is provided with a big end 100 and a small end 200, wherein the eccentric 2001 of the small-head end 200 and the eccentric bracket 2002 need to be welded, therefore, the eccentric wheel 2001 and the eccentric wheel bracket 2002 need to be positioned before welding, the assembly tool provided by the utility model is used for the fixing device when the eccentric wheel 2001 and the eccentric wheel bracket 2002 of the small-head end 200 are welded in the assembly of the small-head eccentric variable compression ratio connecting rod assembly, the device is symmetrical left and right, as shown in fig. 3 and 4, the assembly fixture of the small-head eccentric variable compression ratio connecting rod assembly comprises a base 1, a large-head pressing plate 2, a small-head pressing plate 3 and a positioning piece 4, wherein the base 1 is provided with a large-head positioning boss 11, a small-head positioning boss 12 and a supporting block 13; the big head pressing plate 2 is arranged on the base 1, one end of the big head pressing plate is rotatably connected with the base 1, the other end of the big head pressing plate is connected with the big head positioning boss 11, and the big head pressing plate 2 is configured to press and fix the big head end 100 on the big head positioning boss 11; the small head pressing plate 3 is arranged on the base 1, one end of the small head pressing plate is rotatably connected to the base 1 and is positioned on one side of the small head positioning boss 12, the other end of the small head pressing plate is connected to the supporting block 13 and is positioned on the other side of the small head positioning boss 12, and the small head pressing plate 3 is configured to tightly press and fix the small head end 200 on the small head positioning boss 12; two positioning pieces 4 are arranged, the two positioning pieces 4 are symmetrically arranged on the base 1, and a through hole 2003 on the eccentric wheel bracket 2002 can penetrate through any one of the positioning pieces 4 for positioning.
According to the assembly fixture of the small-head eccentric variable compression ratio connecting rod assembly, the large-head pressing plate 2, the small-head pressing plate 3 and the positioning piece 4 are arranged on the base 1, the eccentric wheel 2001 and the eccentric wheel bracket 2002 on the large-head end 100 and the small-head end 200 are respectively limited, three-point positioning of the small-head eccentric variable compression ratio connecting rod assembly is achieved, and the eccentric wheel 2001 and the eccentric wheel bracket 2002 are conveniently positioned for welding and fixing. When the variable compression ratio connecting rod assembly is used, firstly, the large end 100 and the small end 200 of the small eccentric variable compression ratio connecting rod assembly are respectively arranged on the large end positioning boss 11 and the small end positioning boss 12, attention is paid to make the through hole 2003 in the eccentric wheel bracket 2002 aligned with the positioning piece 4, then the large end pressing plate 2 is pressed and fixed on the large end 100, the small end pressing plate 3 is pressed and fixed on the small end 200, the A-surface eccentric wheel 2001 and the eccentric wheel bracket 2002 of the small end 200 can be welded and fixed, after welding, the large end pressing plate 2 and the small end pressing plate 3 are disassembled and opened, the small eccentric variable compression ratio connecting rod assembly is turned and fixed from one side to the other side, the fixing modes are the same, the through hole 2003 is aligned with the other positioning piece 4 which is symmetrically arranged, the B-surface eccentric wheel 2001 and the eccentric wheel bracket 2002 of the small end 200 are welded and fixed, and finally, the disassembly is completed. Therefore, the eccentric wheel 2001 and the eccentric wheel bracket 2002 of the small head end 200 are accurately positioned by adopting the symmetrically designed assembly tool provided by the embodiment, and the welding and fixing of the small head end 200 can be efficiently and accurately completed. Two positioning pieces 4 are symmetrically arranged on the base 1, so that the A surface and the B surface of the small end 200 can be positioned and welded conveniently.
Optionally, the assembly fixture for the small-end eccentric variable compression ratio connecting rod assembly further comprises two supporting seats 14, the two supporting seats 14 are arranged on the base 1, and the two large-end pressing plates 2 are respectively and rotatably connected to the two supporting seats 14.
As shown in fig. 1 and fig. 2, the supporting seats 14 are respectively disposed on the base 1 at intervals, each supporting seat 14 is rotatably connected with one big-head pressing plate 2, and the supporting seats 14 can meet the requirement of the big-head pressing plate 2 on the rotating height in the rotating process, so that when the big-head pressing plate 2 rotates to press and fix the big-head end 100, the largest contact area between the two is ensured, and the stability and reliability of pressing and fixing are improved. Preferably, the large-head pressing plate 2 is a flat plate member, so as to facilitate contact and compression with the large-head end 100.
Optionally, the assembly fixture for the small-end eccentric variable compression ratio connecting rod assembly further comprises two support frames 15, the two support frames 15 are arranged on the base 1 and located on two sides of the supporting block 13, and the two small-end pressing plates 3 are respectively connected to the two support frames 15 in a rotating mode.
As shown in fig. 1 and 2, the two supporting frames 15 are arranged on the base 1 at intervals and are respectively located at two sides of the supporting block 13, when one ends of the two small-head pressing plates 3 rotate respectively, the other ends can be connected to the supporting block 13, the material cost of the supporting block 13 is saved, and the arrangement of the small-head positioning bosses 12 which are symmetrical at two sides is convenient, so that the quick positioning of the symmetrical structure of the surface a and the surface B of the small-head end 200 is facilitated.
As shown in fig. 2, the base 1 is provided with a positioning hole 16, and the positioning element 4 is inserted into the positioning hole 16.
In this embodiment, be fixed connection or detachable connection between locating hole 16 and the setting element 4, fixed connection mode is like interference connection or integrative structural connection, detachable connection is like threaded connection or grafting, joint etc. be convenient for set up setting element 4 after tip location boss 12 is arranged in to tip 200, perhaps can set up setting element 4 earlier, on tip 200 aligns the position of setting element 4 and wears to establish and then arranges tip location boss 12 in, simple to operate is nimble.
Alternatively, the positioning member 4 is a pin rod inserted into the positioning hole 16. The height of the pin is pre-designed according to the height or thickness of the small head end 200 to meet the requirements of installation and positioning.
Optionally, a central hole 111 is formed in the large-head positioning boss 11, and the large-head pressing plate 2 and the large-head positioning boss 11 are connected through the central hole 111 by a first connecting member 5.
As shown in fig. 1 and fig. 2, fig. 4 and fig. 5, corresponding to the central hole 111, the big-end pressing plate 2 is also provided with a through hole, and the first connecting member 5 is inserted after the central hole 111 and the through hole are aligned, so as to facilitate the central positioning between the big-end 100 and the big-end positioning boss 11 and improve the positioning accuracy. The first connecting member 5 may press and fix the big end 100 on the big end positioning boss 11.
Optionally, the assembly fixture for the small-end eccentric variable compression ratio connecting rod assembly further comprises a sleeve 6, the sleeve 6 is arranged between the large-end positioning boss 11 and the large-end pressing plate 2, and the first connecting piece 5 can be sequentially arranged in the sleeve 6 and the central hole 111 in a penetrating manner.
As shown in fig. 4 and 5, the inner diameter of the sleeve 6 is larger than the outer diameter of the first connecting member 5, the outer diameter of the sleeve 6 is larger than the outer diameter of the central hole 111 but smaller than the inner diameter of the large head end 100, the sleeve 6 can be clamped between the large head positioning boss 11 and the large head pressing plate 2, when the large head pressing plate 2 presses and fixes the large head end 100, the height of the sleeve 6 is equal to the height of the large head end 100 so as to be capable of supporting the large head pressing plate 2, and the large head pressing plate 2 is prevented from generating large deformation under the acting force of the first connecting member 5 after long-term use. Meanwhile, the sleeve 6 can also be used for adjusting the height of the large-head pressing plate 2 and keeping uniform stress between the large-head pressing plate 2 and the large-head end 100.
Optionally, the small-head pressing plate 3 is connected with the supporting block 13 through a second connecting piece 7, and at least two second connecting pieces 7 are arranged.
As shown in fig. 4 and 5, in the present embodiment, the end of each small-head pressing plate 3 is connected to the supporting block 13 through two second connecting members 7, so as to prevent the single-side warpage of the small-head pressing plate 3. Of course, in order to improve the stability during the welding process, a plurality of second connectors 7 may be provided on the small-head pressing plate 3, and the second connectors 7 may be connected to a plurality of supporting blocks 13 or directly connected to the base 1.
Optionally, the first connector 5 and the second connector 7 are bolts. The threaded connection is convenient to disassemble and has high connection strength. Of course, the screw connection can be achieved by using a connecting member such as a screw or a bolt, which is not listed here.
Optionally, the small-head pressing plate 3 is a U-shaped member, the open end of which is rotatably connected to the supporting frame 15, and the top of which is connected to the supporting block 13.
As shown in fig. 1, the small head pressing plate 3 is a U-shaped member with an opening to facilitate the welding operation of the eccentric 2001 and the eccentric holder 2002.
In this embodiment, the rotation axis of the large head pressing plate 2 is perpendicular to the rotation axis of the small head pressing plate 3, so that the occupied area on the base 1 can be saved, and the operation space can be saved.
According to the assembly fixture of the small-end eccentric variable compression ratio connecting rod assembly provided by the embodiment, when the eccentric wheel 2001 and the eccentric wheel bracket 2002 are welded and fixed, with reference to fig. 4 and 5, the assembly fixture comprises two groups of large-end pressing plates 2 and small-end pressing plates 3 which are symmetrically arranged on a base 1, and the specific operation process is as follows:
firstly, the large head pressing plate 2 and the small head pressing plate 3 on one side are rotated and opened, as shown in fig. 4, the large head end 100 and the small head end 200 of the small head eccentric type variable compression ratio connecting rod assembly are respectively aligned with the large head positioning boss 11 and the small head positioning boss 12 on one side, and after the through hole 2003 on the eccentric wheel bracket 2002 is aligned with the positioning piece 4, the small head eccentric type variable compression ratio connecting rod assembly is flatly placed on the base 1. Selecting a proper sleeve 6, placing the sleeve 6 on the large head positioning boss 11 in alignment with the central hole 111 of the large head positioning boss 11 on one side, slowly lowering the large head pressing plate 2 to contact the surface of the large head end 100, and penetrating the first connecting piece 5 into the sleeve 6 and the central hole 111. And then slowly lowering the small-head pressing plate 3 to be in contact with the surface of the eccentric wheel bracket 2002, respectively penetrating the two second connecting pieces 7 on the small-head pressing plate 3 and the supporting block 13 in sequence, and then sequentially screwing the first connecting piece 5 and the second connecting pieces 7. The eccentric 2001 and the eccentric bracket 2002 can be welded.
After the welding of the surface A is finished, the first connecting piece 5 and the second connecting piece 7 are sequentially loosened, the large-head pressing plate 2 and the small-head pressing plate 3 are rotated and opened, and the small-head eccentric variable compression ratio connecting rod assembly is taken out and then turned over up and down.
The large-head pressing plate 2 and the small-head pressing plate 3 on the other side are rotated and opened. Referring to fig. 5, the small end 200 and the large end 100 of the small eccentric variable compression ratio connecting rod assembly are aligned with the small end positioning boss 12 and the large end positioning boss 11 on the other side, respectively, and the through hole 2003 on the eccentric wheel bracket 2002 is aligned with the corresponding positioning member 4, and then the small eccentric variable compression ratio connecting rod assembly is placed on the base 1. The sleeve 6 is aligned with the central hole 111 of the large-head positioning boss 11 and placed on the large-head positioning boss 11, the large-head pressing plate 2 is slowly lowered to be in contact with the surface of the large-head end 100, and the first connecting piece 5 is placed. The small-head pressing plate 3 is slowly put down to be in contact with the surface of the eccentric wheel bracket 2002, the second connecting piece 7 is put in, and the first connecting piece 5 and the second connecting piece 7 are sequentially screwed. The welding of the B-side eccentric 2001 and the eccentric holder 2002 can be started.
After the surface B is welded, the first connecting piece 5 and the second connecting piece 7 are loosened, the large-head pressing plate 2 and the small-head pressing plate 3 are rotated and opened, and the small-head eccentric variable compression ratio connecting rod assembly is taken out.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides an assembly fixture of variable compression ratio connecting rod assembly of little first eccentric formula which characterized in that includes:
the base is provided with a large-head positioning boss, a small-head positioning boss and a supporting block;
the large-head pressing plate is arranged on the base, one end of the large-head pressing plate is rotatably connected with the base, the other end of the large-head pressing plate is connected with the large-head positioning boss, and the large-head pressing plate is configured to press and fix a large-head end on the large-head positioning boss;
the small head pressing plate is arranged on the base, one end of the small head pressing plate is rotatably connected to the base and is positioned on one side of the small head positioning boss, the other end of the small head pressing plate is connected to the supporting block and is positioned on the other side of the small head positioning boss, and the small head pressing plate is configured to press and fix the small head end on the small head positioning boss;
the positioning pieces are arranged on the base, the two positioning pieces are symmetrically arranged on the base relative to the small-head positioning boss, and the through hole in the eccentric wheel support of the small head end can penetrate through any one of the positioning pieces to be positioned.
2. The assembly fixture of the eccentric small-head type variable compression ratio connecting rod assembly according to claim 1, further comprising two supporting seats, wherein the two supporting seats are arranged on the base, and the two large-head pressing plates are respectively and rotatably connected to the two supporting seats.
3. The assembly fixture for the small-end eccentric variable compression ratio connecting rod assembly according to claim 2, further comprising two support frames, wherein the two support frames are arranged on the base and located on two sides of the support block, and the two small-end press plates are respectively and rotatably connected to the two support frames.
4. The assembly fixture of the small-headed eccentric variable compression ratio connecting rod assembly according to claim 1, wherein the base is provided with a positioning hole, and the positioning member is inserted into the positioning hole.
5. The assembly fixture of the small-end eccentric variable compression ratio connecting rod assembly according to claim 4, wherein the positioning piece is a pin rod which is arranged in the positioning hole in a penetrating manner.
6. The assembly fixture of the small-headed eccentric variable compression ratio connecting rod assembly according to claim 1, wherein a center hole is formed on the large-headed positioning boss, and the large-headed pressing plate and the large-headed positioning boss are connected with each other by penetrating the center hole through a first connecting piece.
7. The assembly fixture for the small-end eccentric variable compression ratio connecting rod assembly according to claim 6, further comprising a sleeve, wherein the sleeve is arranged between the large-end positioning boss and the large-end pressing plate, and the first connecting piece can be sequentially arranged in the sleeve and the central hole in a penetrating manner.
8. The assembly fixture of the small-end eccentric variable compression ratio connecting rod assembly according to claim 6, wherein the small-end pressing plate is connected with the supporting block through a second connecting piece, and the number of the second connecting pieces is at least two.
9. The assembly fixture of the small-end eccentric variable compression ratio connecting rod assembly according to claim 8, wherein the first connecting piece and the second connecting piece are both bolts.
10. The assembly fixture of the small-end eccentric variable compression ratio connecting rod assembly according to claim 3, wherein the small-end pressing plate is a U-shaped member, the open end of the small-end pressing plate is rotatably connected to the supporting frame, and the top end of the small-end pressing plate is connected to the supporting block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022501087.4U CN213730188U (en) | 2020-11-02 | 2020-11-02 | Assembly fixture of small-end eccentric variable compression ratio connecting rod assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022501087.4U CN213730188U (en) | 2020-11-02 | 2020-11-02 | Assembly fixture of small-end eccentric variable compression ratio connecting rod assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213730188U true CN213730188U (en) | 2021-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022501087.4U Active CN213730188U (en) | 2020-11-02 | 2020-11-02 | Assembly fixture of small-end eccentric variable compression ratio connecting rod assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213730188U (en) |
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2020
- 2020-11-02 CN CN202022501087.4U patent/CN213730188U/en active Active
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