CN214617465U - Split type double-lubrication connecting rod bushing - Google Patents
Split type double-lubrication connecting rod bushing Download PDFInfo
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- CN214617465U CN214617465U CN202120982312.2U CN202120982312U CN214617465U CN 214617465 U CN214617465 U CN 214617465U CN 202120982312 U CN202120982312 U CN 202120982312U CN 214617465 U CN214617465 U CN 214617465U
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- connecting rod
- bush
- oil
- bushing
- hole
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Abstract
The utility model provides a split type double lubrication connecting rod bushing, which comprises a bushing body, wherein the bushing body comprises a semi-arc first bushing and a semi-arc second bushing, the first bushing cylinder wall is provided with an oil hole, the second bushing is provided with a graphite slide hole, the oil hole and the graphite slide hole are arranged at 180-degree intervals in the circumferential direction of the bushing body, the axis of the oil hole and the axis of the graphite slide hole are coaxial with each other, and the axis of the oil hole and the axis of the graphite slide hole correspond to the centered position in the axial direction of the bushing body; the inner wall of the bush body is provided with an inner groove which is arranged along the circumferential direction of the bush body, and the inner groove is positioned in the middle of the axial direction of the bush body and is connected with the oil hole and the graphite slide hole; the outer walls of the first bush and the second bush are provided with two anti-falling grooves which are arranged at intervals along the axial direction of the first bush and the second bush. The utility model has the advantages of be applicable to dual lubricated connecting rod, the reliability is high, when equipment oil feeding system breaks down, carries out emergent lubrication to the connecting rod friction pair.
Description
Technical Field
The utility model relates to a mechanical equipment's connecting rod field, concretely relates to subdivision formula dual lubrication connecting rod bush.
Background
The connecting rod is generally applied to mechanical equipment such as an internal combustion engine, a piston type air compressor and the like, wherein most connecting rods are provided with oil ducts for ensuring the lubrication between the connecting rod and a piston pin and the lubrication between the connecting rod and a crankshaft, and lubricating oil is conveyed to a small end of the connecting rod through a large end of the connecting rod through the crankshaft oil duct on the crankshaft to realize lubrication, so that a good lubricating oil way is established;
generally speaking, the lubricating effect of an oil way is optimal when the oil supply is sufficient, but when the equipment is in actual use, oil way faults can inevitably occur, such as blockage, oil pump damage and oil leakage of an oil pipe, the oil way is lack of oil supply pressure, so that the condition of oil shortage between friction pairs is caused, the connecting rod bushing and the bearing bush of the big end and the small end of the connecting rod are slightly damaged, the connecting rod bushing and the bearing bush are seriously locked, the piston pin and the crankshaft are directly damaged together, great inconvenience is brought to subsequent maintenance, and the maintenance cost is greatly improved.
SUMMERY OF THE UTILITY MODEL
Based on the problem, the utility model aims to provide a be applicable to dual lubricated connecting rod, the reliability is high, when equipment oil feeding system breaks down, carries out emergent lubricated subdivision formula dual lubrication connecting rod bush to connecting rod friction pair.
Aiming at the problems, the following technical scheme is provided: a split type double-lubrication connecting rod bushing comprises a bushing body, wherein the bushing body comprises a semi-arc-shaped first bushing and a semi-arc-shaped second bushing, an oil hole corresponding to an oil duct of a connecting rod when the first bushing is installed on a big end of the connecting rod is formed in the cylinder wall of the first bushing, the second bushing is installed on a connecting rod cover, a graphite sliding hole is formed in the cylinder wall of the second bushing, the second bushing and the first bushing are in butt joint to form an annular shape when the connecting rod cover is buckled on the big end of the connecting rod, the oil hole and the graphite sliding hole are arranged in a 180-degree interval mode in the circumferential direction of the bushing body, the axis of the oil hole and the axis of the graphite sliding hole are coaxial with each other, and the axis of the oil hole and the axis of the graphite sliding hole correspond to the central position in the axial direction of the bushing body; the inner wall of the bush body is provided with an inner groove which is arranged along the circumferential direction of the bush body, and the inner groove is positioned in the middle of the axial direction of the bush body and is connected with the oil hole and the graphite slide hole; the outer walls of the first bush and the second bush are provided with two anti-falling grooves which are arranged at intervals along the axial direction of the first bush and the second bush.
In the structure, when the first bush of the bush body is arranged on the big head of the connecting rod, the oil hole of the first bush is aligned with the oil duct of the connecting rod, so that lubricating oil in the crankshaft oil duct on the crankshaft is led into the inner grooves of the first bush and the second bush, when the lubricating system of the equipment normally works, the lubricating oil enters the graphite slide hole while entering the inner grooves to lubricate the first bush and the second bush, the graphite block arranged in the connecting rod accommodating hole on the inner wall of the connecting rod cover is pushed, the graphite block is retracted into the connecting rod accommodating hole and compresses the spring, the direct contact between the graphite block and the crankshaft is avoided, when the lubricating system of the equipment breaks down, the pressure of the lubricating oil is reduced or lost, the spring pushes the graphite block to enter the graphite slide hole to contact with the crankshaft, the oil-free lubrication is realized, the continuous emergency operation of the equipment under the oil-lacking state is ensured, and the first bush caused by the oil shortage of the connecting rod before the oil duct is found out by personnel, A series of problems such as abrasion or locking of the second bushing and the crankshaft occur, and loss caused by equipment failure is reduced; the oil hole and the graphite slide hole are oppositely arranged at 180 degrees in the circumferential direction of the bushing body, the oil hole and the oil duct are aligned, the axis of the graphite slide hole is just coaxial with the oil duct, and when the connecting rod is processed, the oil duct can be drilled out from the large head of the connecting rod directly through a drill bit, and meanwhile, an accommodating hole for installing a graphite block and a spring on the small head of the connecting rod is drilled out, so that the connecting rod is convenient to adapt to the processing technology of the connecting rod; the cylindrical surface of connecting rod major part and first bush adaptation, the cylindrical surface of connecting rod cap and second bush adaptation all are equipped with the anticreep arch that corresponds the adaptation with anticreep groove on first bush, the second bush, when connecting rod cap and connecting rod major part lock installation, make anticreep groove and the protruding adaptation of anticreep for the axial position of restriction first bush, second bush avoids first bush, second bush to take place axial displacement.
The utility model discloses further set up to, interior ditch both sides are equipped with the cloth oil groove of seting up toward bush axial direction both ends, cloth oil groove and interior ditch intercommunication.
In the structure, the oil distribution groove can uniformly distribute the lubricating oil between the bushing body and the crankshaft when the lubricating oil is normally supplied; when lubricating oil supply breaks down, the oil distribution groove can assist the tiny graphite powder generated when the coating graphite block rubs with the crankshaft, and the lubricating effect of the graphite block is improved
The utility model discloses further set up to, the oil distribution groove is a plurality of, sets up along bush body circumference direction interval.
In the structure, the oil distribution grooves arranged at intervals along the circumferential direction of the lining body can further ensure the uniformity of the graphite powder coating.
The utility model discloses further set up as, the length at the cloth oil groove both ends of interior ditch groove both sides is less than the axial length of the bush body.
In the above structure, the problem that the oil pressure cannot be established due to the leakage of the lubricating oil from the end of the oil distribution groove is avoided.
The utility model is further arranged that the oil hole is positioned between the adjacent oil distribution grooves in the circumferential direction of the bush body; the graphite slide hole is positioned between adjacent oil distribution grooves in the circumferential direction of the lining body.
In the structure, the oil hole and the graphite slide hole are perpendicular to the axis of the connecting rod when the bushing body is installed, so that the bushing body provided with the oil hole and the graphite slide hole is maximum in stress when the connecting rod works, and the oil distribution groove is formed, so that lubrication of lubricating oil and graphite powder is not facilitated, and the supporting strength of the bushing body is easily weakened.
The utility model discloses further set up to, bush body both ends face is equipped with the radius with the internal section of thick bamboo wall of bush, urceolus wall juncture.
In the above structure, the rounding can reduce the force concentration at the edge position of the bushing body.
The utility model discloses further set up to, oilhole, graphite slide opening internal diameter are not more than interior slot width.
In the structure, the influence of the overlarge oil hole and the graphite slide hole inner diameter on the strength and the supporting performance of the bushing body is avoided.
The utility model discloses further set up to, the groove depth is dark in the cloth oil groove depth less than or equal to.
In the structure, the oil distribution groove is used for distributing oil, so that the groove depth does not need to be too deep to influence the strength and the supporting performance of the bushing body.
The utility model discloses further set up to, the cloth oil groove cross-section is semi-circular, its cell wall of one end and terminal surface juncture that the interior slot was kept away from to the cloth oil groove are equipped with the radius of a circle.
In the structure, the oil distribution groove with the semicircular section is beneficial to lubricating oil and graphite scraps to enter between the friction surfaces for lubrication, and the stress at the end part of the oil distribution groove can be reduced by rounding the arc.
The utility model has the advantages that: when the first bush of the bush body is arranged on the big head of the connecting rod, the oil hole of the first bush is aligned with the oil duct of the connecting rod, lubricating oil in the oil duct of the crankshaft is led to the inner grooves of the first bush and the second bush, when the lubricating system of the equipment normally works, the lubricating oil enters the inner grooves to lubricate the first bush and the second bush and simultaneously enters the graphite slide hole to push the graphite block arranged in the connecting rod accommodating hole on the inner wall of the connecting rod cover, so that the graphite block is retracted into the connecting rod accommodating hole and compresses the spring to avoid direct contact of the graphite block and the crankshaft, when the lubricating system of the equipment breaks down, the pressure of the lubricating oil is reduced or loses pressure, the spring pushes the graphite block to enter the graphite slide hole to contact with the crankshaft, oil-free lubrication is realized, the equipment can continuously run in an emergency under the oil-lacking state, and the first bush, the second bush and the second bush are prevented from breaking down or losing pressure due to oil-lacking before the oil-lacking of the oil duct when the oil-lacking of the oil duct is found out by personnel, A series of problems such as abrasion or locking of the second bushing and the crankshaft occur, and loss caused by equipment failure is reduced; the oil hole and the graphite slide hole are oppositely arranged at 180 degrees in the circumferential direction of the bushing body, the oil hole and the oil duct are aligned, the axis of the graphite slide hole is just coaxial with the oil duct, and when the connecting rod is processed, the oil duct can be drilled out from the large head of the connecting rod directly through a drill bit, and meanwhile, an accommodating hole for installing a graphite block and a spring on the small head of the connecting rod is drilled out, so that the connecting rod is convenient to adapt to the processing technology of the connecting rod; the cylindrical surface of connecting rod major part and first bush adaptation, the cylindrical surface of connecting rod cap and second bush adaptation all are equipped with the anticreep arch that corresponds the adaptation with anticreep groove on first bush, the second bush, when connecting rod cap and connecting rod major part lock installation, make anticreep groove and the protruding adaptation of anticreep for the axial position of restriction first bush, second bush avoids first bush, second bush to take place axial displacement.
Drawings
Fig. 1 is a schematic view of the overall structure of the connecting rod when the connecting rod is installed on the connecting rod of the present invention.
Fig. 2 is a schematic diagram of a half-section structure of the connecting rod when the utility model is installed on the connecting rod.
Fig. 3 is an illustration of the explosion structure of the view angle of the small end of the connecting rod when the utility model is installed on the connecting rod.
Fig. 4 is an illustration of the explosion structure of the connecting rod big end viewing angle when the utility model is installed on the connecting rod.
Fig. 5 is an enlarged schematic view of a portion a of fig. 3 according to the present invention.
Fig. 6 is an enlarged schematic view of a portion B of fig. 3 according to the present invention.
Fig. 7 is an enlarged schematic view of the part C of fig. 4 according to the present invention.
Fig. 8 is an enlarged schematic view of a portion D of fig. 4 according to the present invention.
The reference numbers in the figures mean: 10-a bushing body; 101-a first bushing; 102-a second bushing; 103-anti-drop groove; 104-anti-drop bulge; 11-oil hole; 12-a graphite slide hole; 13-inner groove; 14-oil distribution groove; 141-inverted circular arc; 15-rounding; 20-a connecting rod; 21-oil channel; 22-connecting rod big end; 23-connecting rod small end; 231-accommodating holes; 30-a connecting rod cap; 31-a graphite block; 32-a spring; 33-link accommodating hole.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Referring to fig. 1 to 8, the split type dual lubrication connecting rod bushing shown in fig. 1 to 8 includes a bushing body 10, where the bushing body 10 includes a semi-arc-shaped first bushing 101 and a second bushing 102, the first bushing 101 has a cylindrical wall formed with an oil hole 11 corresponding to an oil passage 21 of a connecting rod 20 when the first bushing 101 is mounted on a connecting rod big end 22, the second bushing 102 is mounted on a connecting rod cover 30 and has a cylindrical wall formed with a graphite sliding hole 12, the connecting rod cover 30 is fastened to the connecting rod big end 22, the second bushing 102 and the first bushing 101 are butted to form an annular shape, the oil hole 11 and the graphite sliding hole 12 are arranged at an interval of 180 degrees in a circumferential direction of the bushing body 10, axes of the oil hole 11 and the graphite sliding hole 12 are coaxial with each other, and axes of the oil hole 11 and the graphite sliding hole 12 correspond to a central position of the bushing body 10 in an axial direction; the inner wall of the bush body 10 is provided with an inner groove 13 which is arranged along the circumferential direction of the bush body, and the inner groove 13 is positioned in the middle of the bush body 10 in the axial direction and is connected with the oil hole 11 and the graphite slide hole 12; the outer walls of the first bushing 101 and the second bushing 102 are provided with two anti-falling grooves 103 which are arranged at intervals along the axial direction of the first bushing 101 and the second bushing 102.
In the above structure, when the first bush 101 of the bush body 10 is mounted on the connecting rod big end 22 of the connecting rod 20, the oil hole 11 is aligned with the oil passage 21 of the connecting rod 20, so as to guide the lubricating oil in the crankshaft oil passage on the crankshaft to the inner grooves 13 of the first bush 101 and the second bush 102, when the equipment lubricating system works normally, the lubricating oil enters the inner groove 13 to lubricate the first bush 101 and the second bush 102 and simultaneously enters the graphite sliding hole 12, the graphite block 31 mounted in the connecting rod accommodating hole 33 on the inner wall of the connecting rod cover 30 is pushed, so that the graphite block 31 is retracted into the connecting rod accommodating hole and compresses the spring 32, thereby avoiding the graphite block 31 from directly contacting with the crankshaft, when the equipment lubricating system fails, the pressure of the lubricating oil drops or loses pressure, at this time, the spring 32 pushes the graphite block 31 to enter the graphite sliding hole 12 to contact with the crankshaft, so as to realize oil-free lubrication, and ensure that the equipment can continue to run in emergency under the oil-lacking state, the problems that the first bush 101, the second bush 102 and the crankshaft are abraded or locked and the like due to oil shortage of the connecting rod 20 before a person finds out that an oil way is in fault are avoided, and loss caused by equipment fault is reduced; because the oil hole 11 and the graphite slide hole 12 are oppositely arranged 180 degrees in the circumferential direction of the bushing body 10, when the oil hole 11 is aligned with the oil passage 21, the axis of the graphite slide hole 12 is just coaxial with the oil passage 21, when the connecting rod 20 is processed, the oil passage 21 can be drilled from the large head 22 of the connecting rod directly through a drill, and meanwhile, the accommodating hole 231 for installing the graphite block 31 and the spring 32 on the small head 23 of the connecting rod can be drilled, so that the connecting rod 20 can be conveniently adapted to the processing technology of the connecting rod 20; the cylindrical surface of connecting rod big end 22 and first bush 101 adaptation, the cylindrical surface of connecting rod lid 30 and second bush 102 adaptation all are equipped with the anticreep arch 104 that corresponds the adaptation with anticreep groove 103 on first bush 101, the second bush 102, when connecting rod lid 30 and connecting rod big end 22 lock installation, make anticreep groove 103 and the protruding 104 adaptation of anticreep for the axial position of restriction first bush 101, second bush 102 avoids first bush 101, second bush 102 to take place axial displacement.
In this embodiment, oil distribution grooves 14 formed at both ends of the inner groove 13 in the axial direction of the bushing body 10 are formed, and the oil distribution grooves 14 are communicated with the inner groove 13.
In the above structure, the oil distribution groove 14 can uniformly distribute the lubricating oil between the bush body 10 and the crankshaft when the lubricating oil supply is normal; when lubricating oil supply fails, the oil distribution groove 14 can assist in coating fine graphite powder generated when the graphite block 31 rubs with the crankshaft, and the lubricating effect of the graphite block 31 is improved
In this embodiment, the oil distribution grooves 14 are a plurality of grooves arranged at intervals along the circumferential direction of the bushing body 10.
In the above structure, the oil distribution grooves 14 provided at intervals in the circumferential direction of the liner body 10 can further ensure the uniformity of the graphite powder coating.
In this embodiment, the lengths of the two ends of the oil distribution grooves 14 on the two sides of the inner groove 13 are smaller than the axial length of the bushing body 10.
In the above configuration, the oil pressure is prevented from being unable to be established by the leakage of the lubricating oil from the end of the oil distribution groove 14.
In this embodiment, the oil holes 11 are located between adjacent oil distribution grooves 14 in the circumferential direction of the bushing body 10; the graphite slide holes 12 are positioned between adjacent oil distribution grooves 14 in the circumferential direction of the bushing body 10.
In the above structure, the oil hole 11 and the graphite sliding hole 12 are perpendicular to the axis of the connecting rod 20 when the bushing body 10 is installed, so that the connecting rod 20 is in operation, the bushing body 10 provided with the oil hole 11 and the graphite sliding hole 12 bears the largest stress, and the oil distribution groove 14 is provided, which is not beneficial to lubricating oil and graphite powder, and is easy to weaken the supporting strength of the bushing body 10.
In this embodiment, the junction between the two end faces of the bushing body 10 and the inner and outer cylinder walls of the bushing body 10 is provided with a radius 15.
In the above structure, the radius 15 can reduce the stress concentration at the edge of the bushing body 10.
In this embodiment, the inner diameters of the oil hole 11 and the graphite slide hole 12 are not larger than the groove width of the inner groove 13.
In the structure, the influence of the overlarge inner diameters of the oil hole 11 and the graphite slide hole 13 on the strength and the supporting performance of the bushing body 10 is avoided.
In this embodiment, the groove depth of the oil distribution groove 14 is less than or equal to the groove depth of the inner groove 13.
In the above structure, the oil distribution groove 14 is used for distributing oil, so the groove depth does not need to be set too deep to affect the strength and the supporting performance of the bushing body 10.
In this embodiment, the cross section of the oil distribution groove 14 is semicircular, and a reverse arc 141 is disposed at a junction between a groove wall and an end surface of one end of the oil distribution groove 14 away from the inner groove 13.
In the above structure, the oil distribution groove 14 with a semicircular cross section is beneficial to lubricating oil and graphite powder entering between the friction surfaces for lubrication, and the inverted arc 141 can reduce the stress at the end of the oil distribution groove 14.
The utility model has the advantages that: when the first bush 101 of the bush body 10 is mounted on the connecting rod big end 22 of the connecting rod 20, the oil hole 11 is aligned with the oil duct 21 of the connecting rod 20, so as to lead the lubricating oil in the crankshaft oil duct on the crankshaft to the inner grooves 13 of the first bush 101 and the second bush 102, when the equipment lubricating system works normally, the lubricating oil enters the inner groove 13 to lubricate the first bush 101 and the second bush 102 and simultaneously enters the graphite sliding hole 12, so as to push the graphite block 31 mounted in the connecting rod accommodating hole 33 on the inner wall of the connecting rod cover 30, so that the graphite block 31 is retracted into the connecting rod accommodating hole and compresses the spring 32, thereby avoiding the direct contact of the graphite block 31 with the crankshaft, when the equipment lubricating system fails, the pressure of the lubricating oil is reduced or lost, at the moment, the spring 32 pushes the graphite block 31 to enter the graphite sliding hole 12 to contact with the crankshaft, so as to realize oil-free lubrication, so as to ensure that the equipment can continue emergency operation under the oil shortage state, the problems that the first bush 101, the second bush 102 and the crankshaft are abraded or locked and the like due to oil shortage of the connecting rod 20 before a person finds out that an oil way is in fault are avoided, and loss caused by equipment fault is reduced; because the oil hole 11 and the graphite slide hole 12 are oppositely arranged 180 degrees in the circumferential direction of the bushing body 10, when the oil hole 11 is aligned with the oil passage 21, the axis of the graphite slide hole 12 is just coaxial with the oil passage 21, when the connecting rod 20 is processed, the oil passage 21 can be drilled from the large head 22 of the connecting rod directly through a drill, and meanwhile, the accommodating hole 231 for installing the graphite block 31 and the spring 32 on the small head 23 of the connecting rod can be drilled, so that the connecting rod 20 can be conveniently adapted to the processing technology of the connecting rod 20; the cylindrical surface of connecting rod big end 22 and first bush 101 adaptation, the cylindrical surface of connecting rod lid 30 and second bush 102 adaptation all are equipped with the anticreep arch 104 that corresponds the adaptation with anticreep groove 103 on first bush 101, the second bush 102, when connecting rod lid 30 and connecting rod big end 22 lock installation, make anticreep groove 103 and the protruding 104 adaptation of anticreep for the axial position of restriction first bush 101, second bush 102 avoids first bush 101, second bush 102 to take place axial displacement.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations of the above assumption should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides a dual lubricated connecting rod bush of subdivision formula, includes the bush body, the bush body is including half curved first bush and second bush, its characterized in that: the first bushing is provided with an oil hole on the cylinder wall, the oil hole corresponds to an oil duct of the connecting rod when the first bushing is arranged on the big head of the connecting rod, the second bushing is arranged on the connecting rod cover and is provided with a graphite sliding hole on the cylinder wall, the second bushing and the first bushing are butted into a ring when the connecting rod cover is buckled on the big head of the connecting rod, the oil hole and the graphite sliding hole are arranged at intervals of 180 degrees in the circumferential direction of the bushing body, the axis of the oil hole and the axis of the graphite sliding hole are coaxial with each other, and the axis of the oil hole and the axis of the graphite sliding hole correspond to the central position of the axial direction of the bushing body; the inner wall of the bush body is provided with an inner groove which is arranged along the circumferential direction of the bush body, and the inner groove is positioned in the middle of the axial direction of the bush body and is connected with the oil hole and the graphite slide hole; the outer walls of the first bush and the second bush are provided with two anti-falling grooves which are arranged at intervals along the axial direction of the first bush and the second bush.
2. The split dual lubrication connecting rod bushing according to claim 1, wherein: and oil distributing grooves which are formed towards the two ends of the axial direction of the bushing body are formed in the two sides of the inner groove and are communicated with the inner groove.
3. The split dual lubrication connecting rod bushing according to claim 2, wherein: the oil distribution grooves are arranged at intervals along the circumferential direction of the lining body.
4. A split double lubrication connecting rod bushing according to claim 2 or 3, wherein: the lengths of the two ends of the oil distribution grooves on the two sides of the inner groove are smaller than the axial length of the bushing body.
5. The split dual lubrication connecting rod bushing according to claim 3, wherein: the oil holes are positioned between adjacent oil distribution grooves in the circumferential direction of the bush body; the graphite slide hole is positioned between adjacent oil distribution grooves in the circumferential direction of the lining body.
6. The split dual lubrication connecting rod bushing according to claim 1, wherein: and rounding circles are arranged at the junctions of the two end surfaces of the bushing body and the inner and outer cylinder walls of the bushing body.
7. The split dual lubrication connecting rod bushing according to claim 1, wherein: the inner diameters of the oil hole and the graphite slide hole are not more than the width of the inner groove.
8. The split dual lubrication connecting rod bushing according to claim 2, wherein: the depth of the oil distribution groove is less than or equal to that of the inner groove.
9. The split dual lubrication connecting rod bushing according to claim 2, wherein: the section of the oil distribution groove is semicircular, and an inverted arc is arranged at the junction of the groove wall and the end face of one end of the oil distribution groove, which is far away from the inner groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120982312.2U CN214617465U (en) | 2021-05-10 | 2021-05-10 | Split type double-lubrication connecting rod bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120982312.2U CN214617465U (en) | 2021-05-10 | 2021-05-10 | Split type double-lubrication connecting rod bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214617465U true CN214617465U (en) | 2021-11-05 |
Family
ID=78407343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120982312.2U Expired - Fee Related CN214617465U (en) | 2021-05-10 | 2021-05-10 | Split type double-lubrication connecting rod bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214617465U (en) |
-
2021
- 2021-05-10 CN CN202120982312.2U patent/CN214617465U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211105 |