CN108999876A - Freezer compressor link assembly - Google Patents
Freezer compressor link assembly Download PDFInfo
- Publication number
- CN108999876A CN108999876A CN201811131360.XA CN201811131360A CN108999876A CN 108999876 A CN108999876 A CN 108999876A CN 201811131360 A CN201811131360 A CN 201811131360A CN 108999876 A CN108999876 A CN 108999876A
- Authority
- CN
- China
- Prior art keywords
- vertical
- connecting rod
- assembling
- assembly
- compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000000926 separation method Methods 0.000 claims description 11
- 229910000746 Structural steel Inorganic materials 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 229910000639 Spring steel Inorganic materials 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 4
- 230000000737 periodic effect Effects 0.000 abstract description 4
- 229910000851 Alloy steel Inorganic materials 0.000 abstract 1
- 229910000975 Carbon steel Inorganic materials 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000010962 carbon steel Substances 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 210000005069 ears Anatomy 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
- F16C7/02—Constructions of connecting-rods with constant length
- F16C7/023—Constructions of connecting-rods with constant length for piston engines, pumps or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/14—Connection to driving members with connecting-rods, i.e. pivotal connections
- F16J1/16—Connection to driving members with connecting-rods, i.e. pivotal connections with gudgeon-pin; Gudgeon-pins
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Compressor (AREA)
Abstract
The present invention proposes a kind of freezer compressor link assembly, belongs to freezer compressor technical field.This freezer compressor link assembly, one end of the body of rod are provided with axis hole, and the eccentric part of axis hole and crankshaft is hinged, the other end of the body of rod is provided with opening, the outer ring of assembly spherical bearing, the inner ring of spherical bearing are provided with pin hole in opening, and pin hole is fixedly connected with piston pin.Beneficial effects of the present invention: avoiding piston pin bearing by periodic shock load, and piston pin is not allowed vulnerable, also reduces the failure rate of freezer compressor；Piston pin does not need to be heat-treated, and the material selection of piston pin can also be adjusted to the lower structural carbon steel of cost by structural alloy steel；The longitudinal degress of feedom is increased between the outer ring and inner ring of spherical bearing, two hole perpendicularity of cylinder seat, the two axis depth of parallelism of crankshaft are required lower, it avoids piston, piston pin, crankshaft from generating eccentric wear, reduces the abrasion at connecting rod pin hole, improve compressor operating efficiency and reliability.
Description
Technical Field
The invention relates to the technical field of refrigerator compressors, in particular to a connecting rod assembly for a refrigerator compressor.
Background
In the existing refrigerator compressor, a connecting rod is hinged with a piston through a piston pin. When the compressor of the refrigerator works, the crankshaft drives the connecting rod, and the connecting rod drives the piston to do linear reciprocating motion. On one hand, the piston pin belongs to a moving part, bears large periodic impact load and is easy to damage, and the main forms are surface abrasion and fatigue crack; on the other hand, the connecting rod is hinged with the piston through the piston pin, longitudinal freedom is lacked, high requirements are provided for the verticality of two holes of the cylinder seat and the parallelism of two shafts of the crankshaft, if the dimensional accuracy of the cylinder seat and the crankshaft is insufficient, eccentric wear can be generated on the piston, the piston pin and the crankshaft, the pin hole of the connecting rod is easy to wear, and the efficiency of the compressor is reduced. In addition, the connecting rod of the existing refrigerator compressor is designed in an integrated mode, the mold is complex, and the cost investment is high.
Disclosure of Invention
The invention aims to provide a connecting rod assembly for a refrigerator compressor, which solves the technical problems of the defects existing in the hinge joint of the connecting rod and a piston of the existing refrigerator compressor through a piston pin.
The invention provides a connecting rod assembly for a refrigerator compressor, which comprises a rod body, a crankshaft, a piston pin and a spherical sliding bearing, wherein one end of the rod body is provided with a shaft hole, the shaft hole is hinged with an eccentric part of the crankshaft, the other end of the rod body is provided with an opening, an outer ring of the spherical sliding bearing is assembled in the opening, the inner ring of the spherical sliding bearing is provided with a pin hole, and the pin hole is fixedly connected with the piston pin.
Further, the rod body comprises a first connecting rod, a second connecting rod and a positioning connecting piece; the first connecting rod comprises a first sleeve, the middle position of the first sleeve is a shaft hole, and one end of the first sleeve is provided with two assembling lugs side by side; the second connecting rod comprises a second sleeve, the middle position of the second sleeve is an opening, a spherical sliding bearing is arranged in the opening on the second sleeve, and one end of the second sleeve is provided with an assembling handle; the assembly handle is embedded in the space between the two assembly lugs, and the assembly lugs are connected with the assembly handle in an assembling mode through the positioning connecting piece.
Furthermore, the opposite surfaces of the two assembling lugs are respectively provided with a first vertical groove, and the upper surfaces of the two assembling lugs are respectively provided with a first transverse groove communicated with the first vertical grooves; two side surfaces of the assembling handle are both provided with second vertical grooves, and the upper surface of the assembling handle is provided with second transverse grooves communicated with the second vertical grooves; the positioning connecting piece comprises a transverse baffle and two vertical baffles, the two vertical baffles are arranged side by side, and the upper ends of the two vertical baffles are connected with the transverse baffle; when the assembling handle is embedded in a space between the two assembling lugs, the first vertical groove is aligned with the second vertical groove, and the first transverse groove is aligned with the second transverse groove; the vertical separation blade is inserted into a space between the first vertical groove and the second vertical groove, one part of the vertical separation blade is clamped with the first vertical groove, the other part of the vertical separation blade is clamped with the second vertical groove, two ends of the transverse separation blade are clamped with the first transverse groove, and the middle part of the transverse separation blade is clamped with the second transverse groove.
Furthermore, one side of each vertical baffle is provided with a barb.
Further, the barb is made of spring steel material.
Furthermore, the upper end surfaces of the transverse blocking pieces are flush with the upper surfaces of the two assembling lugs and the upper surface of the assembling handle.
Furthermore, one end of the first sleeve is provided with an annular reinforcing seat, and the reinforcing seat is provided with two assembling lugs.
Further, the piston pin is made of a carbon structural steel material.
Furthermore, the pin hole is in interference fit with the piston pin.
Compared with the prior art, the connecting rod assembly for the refrigerator compressor has the following characteristics and advantages:
according to the connecting rod assembly for the refrigerator compressor, the piston pin is prevented from bearing periodic impact load, the piston pin is not easy to lose efficacy, and the failure rate of the refrigerator compressor is reduced; the piston pin does not need heat treatment, and the material of the piston pin can be adjusted to carbon structural steel with lower cost by alloy structural steel; the longitudinal degree of freedom is increased between the outer ring and the inner ring of the spherical sliding bearing, the requirements on the verticality of two holes of a cylinder seat and the parallelism of two shafts of a crankshaft are low, eccentric wear of a piston, a piston pin and the crankshaft is avoided, abrasion at the pin hole of a connecting rod is reduced, and the working efficiency and reliability of the compressor are improved.
The features and advantages of the present invention will become more apparent from the detailed description of the invention when taken in conjunction with the drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a portion of a connecting rod assembly for a refrigerator compressor according to an embodiment of the present invention;
FIG. 2 is an exploded view of a portion of a connecting rod assembly for a refrigerator compressor in accordance with an embodiment of the present invention;
FIG. 3 is a perspective view of a first link of the linkage assembly for a refrigerator compressor in accordance with the present invention;
FIG. 4 is a perspective view of a second link of the linkage assembly for a refrigerator compressor in accordance with the present invention;
FIG. 5 is a perspective view of a locating connection member in a linkage assembly for a refrigerator compressor in accordance with an embodiment of the present invention;
wherein,
1. the assembling structure comprises a first connecting rod, 11, a first sleeve, 111, a shaft hole, 12, a reinforcing seat, 13, an assembling lug, 2, a second connecting rod, 21, a second sleeve, 211, an opening, 22, an assembling handle, 3, a positioning connecting piece, 31, a transverse baffle, 32, a vertical baffle, 33, a barb, 41, a first vertical groove, 42, a first transverse groove, 51, a second vertical groove, 52, a second transverse groove, 61, an outer ring of a spherical sliding bearing, 62, an inner ring of the spherical sliding bearing, 621 and a pin hole.
Detailed Description
As shown in fig. 1 to 5, the present embodiment provides a connecting rod assembly for a compressor of a refrigerator, which includes a rod body, a crankshaft (not shown), a piston pin (not shown), and a spherical sliding bearing, which is composed of an outer ring 61 of the spherical sliding bearing and an inner ring 62 of the spherical sliding bearing.
One end of the rod body is provided with a shaft hole 111, the shaft hole 111 is hinged with the eccentric part of the crankshaft, and the other end of the rod body is provided with an opening 211. An outer ring 61 of the spherical sliding bearing is fitted in the opening 211, and a pin hole 621 is provided in an inner ring 62 of the spherical sliding bearing, and the pin hole 621 is fixedly connected to a piston pin. In this embodiment, the pin hole 621 and the wrist pin are in an interference fit, so that there is no relative movement therebetween. The piston pin of the embodiment is made of carbon structural steel materials, so that the alloy structural steel which is commonly used at present is not required to be selected, and the cost is reduced.
The rod body of this embodiment includes a first link 1, a second link 2 and a positioning connector 3. The positioning connecting piece 3 is used for assembling the first connecting rod 1 and the second connecting rod 2 into a whole.
The first connecting rod 1 comprises a first sleeve 11, the middle position of the first sleeve 11 is an axle hole 111, one end of the first sleeve 11 is provided with an annular reinforcing seat 12, and two assembling lugs 13 are arranged on the reinforcing seat 12 side by side. The reinforcement socket 12 secures the first sleeve 11 to the mounting ears 13. First vertical groove 41 has all been seted up to the opposite face of two assembly ears 13, and first transverse groove 42 has all been seted up to the upper surface of two assembly ears 13, and first transverse groove 42 communicates with first vertical groove 41.
The second connecting rod 2 comprises a second sleeve 21, the middle position of the second sleeve 21 is an opening 211, and a spherical sliding bearing is arranged in the opening 211 on the second sleeve 21. One end of the second sleeve 21 is provided with an assembling handle 22, and the second sleeve 21 and the assembling handle 22 are integrally formed. The two side surfaces of the assembling handle 22 are both provided with second vertical grooves 51, the upper surface of the assembling handle 22 is provided with second transverse grooves 52, and the second transverse grooves 52 are communicated with the second vertical grooves 51.
The positioning connecting piece 3 comprises a transverse baffle 31 and two vertical baffles 32, wherein the two vertical baffles 32 are arranged side by side, and the upper ends of the two vertical baffles 32 are connected with the transverse baffle 31.
The assembling handle 22 is embedded in the space between the two assembling lugs 13, the first vertical groove 41 is aligned with the second vertical groove 51, and the first transverse groove 42 is aligned with the second transverse groove 52. The vertical baffle plate 32 is inserted into a space between the first vertical groove 41 and the second vertical groove 51, one part of the vertical baffle plate 32 is clamped with the first vertical groove 41, the other part of the vertical baffle plate 32 is clamped with the second vertical groove 51, two ends of the transverse baffle plate 31 are clamped with the first transverse groove 42, and the middle part of the transverse baffle plate 31 is clamped with the second transverse groove 52. The upper end faces of the transverse blocking pieces 31 are flush with the upper surfaces of the two assembling lugs 13 and the upper surface of the assembling handle 22. Therefore, the assembling lugs 13 and the assembling handle 22 are assembled and connected through the positioning connecting piece 3, and the assembling lugs 13, the assembling handle 22 and the positioning connecting piece 3 are assembled firmly.
One side of the two vertical blocking pieces 32 is provided with a barb 33, and the barb 33 can prevent the vertical blocking pieces 32 from falling off from the first vertical groove 41 and the second vertical groove 51. The barb 33 is made of a spring steel material, and when the vertical baffle 32 is inserted into the space between the first vertical groove 41 and the second vertical groove 51, the barb 33 is deformed to enable the barb 33 to be tightly extruded on the inner walls of the first vertical groove 41 and the second vertical groove 51.
The connecting rod assembly for the refrigerator compressor is applied to the refrigerator compressor, and in the normal operation process of the compressor, the crankshaft drives the connecting rod, and the connecting rod drives the piston to do linear reciprocating motion. The outer ring 61 of the spherical sliding bearing and the inner ring 62 of the spherical sliding bearing rotate and swing at any angle, so that the situation that a piston pin bears periodic impact load is avoided, the piston pin is not easy to lose efficacy, and the failure rate of the refrigerator compressor is reduced. The piston pin does not need heat treatment, and the material of the piston pin can be adjusted to carbon structural steel with lower cost by alloy structural steel. The longitudinal degree of freedom is increased between the outer ring 61 of the spherical sliding bearing and the inner ring 62 of the spherical sliding bearing, the requirements on the verticality of two holes of a cylinder seat and the parallelism of two shafts of a crankshaft are low, eccentric wear of a piston, a piston pin and the crankshaft is avoided, abrasion at the pin hole 621 of a connecting rod is reduced, and the working efficiency and reliability of the compressor are improved. In addition, the connecting rod assembly for the refrigerator compressor is of a split type design, and all split components are assembled into a whole, so that the mold is simple in structure, and the production cost is reduced.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (9)
1. The utility model provides a link assembly for refrigerator compressor which characterized in that: the novel crankshaft structure comprises a rod body, a crankshaft, a piston pin and a spherical sliding bearing, wherein a shaft hole is formed in one end of the rod body, the shaft hole is hinged to an eccentric portion of the crankshaft, an opening is formed in the other end of the rod body, an outer ring of the spherical sliding bearing is assembled in the opening, a pin hole is formed in an inner ring of the spherical sliding bearing, and the pin hole is fixedly connected with the piston pin.
2. The connecting rod assembly for a compressor of a refrigerator according to claim 1, wherein: the rod body comprises a first connecting rod, a second connecting rod and a positioning connecting piece; the first connecting rod comprises a first sleeve, the middle position of the first sleeve is a shaft hole, and one end of the first sleeve is provided with two assembling lugs side by side; the second connecting rod comprises a second sleeve, the middle position of the second sleeve is an opening, a spherical sliding bearing is arranged in the opening on the second sleeve, and one end of the second sleeve is provided with an assembling handle; the assembly handle is embedded in the space between the two assembly lugs, and the assembly lugs are connected with the assembly handle in an assembling mode through the positioning connecting piece.
3. The connecting rod assembly for a compressor of a refrigerator according to claim 2, wherein: the opposite surfaces of the two assembling lugs are respectively provided with a first vertical groove, and the upper surfaces of the two assembling lugs are respectively provided with a first transverse groove communicated with the first vertical grooves; two side surfaces of the assembling handle are both provided with second vertical grooves, and the upper surface of the assembling handle is provided with second transverse grooves communicated with the second vertical grooves; the positioning connecting piece comprises a transverse baffle and two vertical baffles, the two vertical baffles are arranged side by side, and the upper ends of the two vertical baffles are connected with the transverse baffle; when the assembling handle is embedded in a space between the two assembling lugs, the first vertical groove is aligned with the second vertical groove, and the first transverse groove is aligned with the second transverse groove; the vertical separation blade is inserted into a space between the first vertical groove and the second vertical groove, one part of the vertical separation blade is clamped with the first vertical groove, the other part of the vertical separation blade is clamped with the second vertical groove, two ends of the transverse separation blade are clamped with the first transverse groove, and the middle part of the transverse separation blade is clamped with the second transverse groove.
4. The link assembly for a compressor of a refrigerator according to claim 3, wherein: one side of the two vertical separation blades is provided with a barb.
5. The link assembly for a compressor of a refrigerator according to claim 4, wherein: the barb is made of spring steel material.
6. The link assembly for a compressor of a refrigerator according to claim 3, wherein: the upper end surfaces of the transverse retaining pieces are flush with the upper surfaces of the two assembling lugs and the upper surface of the assembling handle.
7. The connecting rod assembly for a compressor of a refrigerator according to claim 2, wherein: one end of the first sleeve is provided with an annular reinforcing seat, and the reinforcing seat is provided with two assembling lugs.
8. The connecting rod assembly for a compressor of a refrigerator according to claim 1, wherein: the piston pin is made of carbon structural steel material.
9. The connecting rod assembly for a compressor of a refrigerator according to claim 1, wherein: the pin hole is in interference fit with the piston pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811131360.XA CN108999876A (en) | 2018-09-27 | 2018-09-27 | Freezer compressor link assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811131360.XA CN108999876A (en) | 2018-09-27 | 2018-09-27 | Freezer compressor link assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108999876A true CN108999876A (en) | 2018-12-14 |
Family
ID=64589633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811131360.XA Pending CN108999876A (en) | 2018-09-27 | 2018-09-27 | Freezer compressor link assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108999876A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115384681A (en) * | 2022-09-14 | 2022-11-25 | 江苏宗申电动车有限公司 | A high-safety electric vehicle |
| CN115875234A (en) * | 2021-09-30 | 2023-03-31 | 安徽美芝制冷设备有限公司 | Connecting rod, reciprocating compressor, refrigeration equipment and connecting rod assembly |
| CN116263202A (en) * | 2021-12-13 | 2023-06-16 | 安徽美芝制冷设备有限公司 | Piston-rod unit and compressor |
| CN116713188A (en) * | 2023-08-03 | 2023-09-08 | 河南省远洋粉体科技股份有限公司 | Vibration screening and grading device for aluminum powder |
| CN117020368A (en) * | 2023-10-07 | 2023-11-10 | 湖北亿广同盛科技有限公司 | An automatic welding robot for crane end beams |
| CN117053000A (en) * | 2023-10-12 | 2023-11-14 | 烟台云沣生态环境产业发展股份有限公司 | A pipe connection device for municipal drainage projects and its docking method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001082336A (en) * | 1999-09-13 | 2001-03-27 | Matsushita Refrig Co Ltd | Reciprocating compressor |
| CN103375383A (en) * | 2012-04-27 | 2013-10-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Piston compressor connecting rod assembly and piston compressor using the same |
| CN103541882A (en) * | 2012-07-12 | 2014-01-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor assembly and compressor with same |
| CN208982471U (en) * | 2018-09-27 | 2019-06-14 | 青岛万宝压缩机有限公司 | Freezer compressor link assembly |
-
2018
- 2018-09-27 CN CN201811131360.XA patent/CN108999876A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001082336A (en) * | 1999-09-13 | 2001-03-27 | Matsushita Refrig Co Ltd | Reciprocating compressor |
| CN103375383A (en) * | 2012-04-27 | 2013-10-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Piston compressor connecting rod assembly and piston compressor using the same |
| CN103541882A (en) * | 2012-07-12 | 2014-01-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor assembly and compressor with same |
| CN208982471U (en) * | 2018-09-27 | 2019-06-14 | 青岛万宝压缩机有限公司 | Freezer compressor link assembly |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115875234A (en) * | 2021-09-30 | 2023-03-31 | 安徽美芝制冷设备有限公司 | Connecting rod, reciprocating compressor, refrigeration equipment and connecting rod assembly |
| CN116263202A (en) * | 2021-12-13 | 2023-06-16 | 安徽美芝制冷设备有限公司 | Piston-rod unit and compressor |
| CN115384681A (en) * | 2022-09-14 | 2022-11-25 | 江苏宗申电动车有限公司 | A high-safety electric vehicle |
| CN115384681B (en) * | 2022-09-14 | 2023-09-05 | 江苏宗申电动车有限公司 | High-safety electric vehicle |
| CN116713188A (en) * | 2023-08-03 | 2023-09-08 | 河南省远洋粉体科技股份有限公司 | Vibration screening and grading device for aluminum powder |
| CN117020368A (en) * | 2023-10-07 | 2023-11-10 | 湖北亿广同盛科技有限公司 | An automatic welding robot for crane end beams |
| CN117020368B (en) * | 2023-10-07 | 2024-02-20 | 湖北亿广同盛科技有限公司 | An automatic welding robot for crane end beams |
| CN117053000A (en) * | 2023-10-12 | 2023-11-14 | 烟台云沣生态环境产业发展股份有限公司 | A pipe connection device for municipal drainage projects and its docking method |
| CN117053000B (en) * | 2023-10-12 | 2023-12-26 | 烟台云沣生态环境产业发展股份有限公司 | Pipeline connecting device for municipal drainage engineering and butt joint method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181214 |