CN111999174B - Experimental clamp for steel wire rope - Google Patents
Experimental clamp for steel wire rope Download PDFInfo
- Publication number
- CN111999174B CN111999174B CN202010902665.7A CN202010902665A CN111999174B CN 111999174 B CN111999174 B CN 111999174B CN 202010902665 A CN202010902665 A CN 202010902665A CN 111999174 B CN111999174 B CN 111999174B
- Authority
- CN
- China
- Prior art keywords
- clamping
- wire rope
- clamping part
- lantern ring
- steel wire
- 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.)
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Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 35
- 239000010959 steel Substances 0.000 title claims abstract description 35
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 14
- 238000004804 winding Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 244000161999 Acacia greggii Species 0.000 description 2
- 235000004608 catclaw acacia Nutrition 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/028—One dimensional, e.g. filaments, wires, ropes or cables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Ropes Or Cables (AREA)
Abstract
The invention discloses an experimental clamp for a steel wire rope, which comprises a first clamping part and a second clamping part which are mutually connected in an axial mode, wherein a steel wire rope is arranged between the first clamping part and the second clamping part, the first clamping part comprises a first lantern ring, two ends of the first lantern ring are respectively fixed with a first clamping block with central symmetry, the second clamping part comprises a second lantern ring, two ends of the second lantern ring are respectively fixed with a second clamping block with central symmetry, a shaft rod is arranged between the first lantern ring and the second lantern ring in a penetrating mode, a through hole is formed in the side face of the shaft rod in a penetrating mode, grooves are formed in the end face, close to the second clamping block, of the first clamping block, the same grooves are formed in the end face, close to the first clamping block, of the second clamping block, rope grooves are formed between the two grooves, the two rope grooves are respectively arranged at the upper end and the lower end of the through hole, and the steel wire rope is arranged between the two rope grooves and the through hole in a penetrating mode. The invention can clamp the steel wire rope in two sections, and plays an anti-slip role when the steel wire rope is stretched.
Description
Technical Field
The invention relates to the field of inspection and detection equipment, in particular to an experimental clamp for a steel wire rope.
Background
According to GB/T8358-2006 "Steel wire rope breaking and stretching experiment method", four clamping methods for steel wire rope test pieces are provided: the method comprises a sleeve pressing method, a casting method, a direct clamping method and a winding method. The method adopts a sampling detection method, and a section of the rope is cut off on the basis of the existing whole rope to carry out a breaking and stretching experiment. The experiment is to the requirement of both ends anchor clamps body be that the experiment process prevents that test piece chucking position from appearing becoming flexible and sliding, adopts cat claw dop as clamping wire rope's anchor clamps in the prior art often, but cat claw constantly takes place the phenomenon of skidding at clamping wire rope in-process, influences the stability of experiment process.
Disclosure of Invention
The invention aims to provide an experimental clamp for a steel wire rope, which solves the problems in the prior art, can clamp the steel wire rope in two sections and has an anti-skid effect when the steel wire rope is stretched.
In order to achieve the above object, the present invention provides the following solutions: the invention provides an experimental clamp for a steel wire rope, which comprises a first clamping part and a second clamping part which are mutually connected in an axial mode, wherein a steel wire rope is arranged between the first clamping part and the second clamping part, the first clamping part comprises a first lantern ring, two ends of the first lantern ring are respectively fixed with first clamping blocks with central symmetry, the second clamping part comprises a second lantern ring, two ends of the second lantern ring are respectively fixed with second clamping blocks with central symmetry, a shaft rod is arranged between the first lantern ring and the second lantern ring in a penetrating mode, a through hole is formed in the side face of the shaft rod, the first clamping blocks and the second clamping blocks are correspondingly arranged, grooves are formed in the end face, close to the second clamping blocks, of the first clamping blocks, identical grooves are formed in the end face, opposite to the first clamping blocks, between the two grooves of the first clamping blocks and the second clamping blocks, the two rope grooves are respectively located at the upper end and the lower end of the through hole, and the steel wire rope is arranged between the two rope grooves and the through hole in a penetrating mode.
Preferably, the groove wall of the rope groove is provided with lines which are matched with the winding direction of the steel wire rope.
Preferably, an elastic sleeve is sleeved in the through hole, and a plurality of elastic bulges are fixed on the inner side surface of the elastic sleeve.
Preferably, two symmetrically arranged guide sleeves are symmetrically fixed on two side surfaces of the first clamping block respectively, and two symmetrically arranged identical guide sleeves are symmetrically fixed on two side surfaces of the second clamping block respectively.
Preferably, the inner cavity of the guide sleeve is provided with threads.
Preferably, bolts are detachably connected between the two opposite guide sleeves positioned on the same side through threads.
The application method of the experimental clamp for the steel wire rope comprises the following specific steps: the structure of first clamping part, second clamping part is the reverse clamp face of Z shape, link together through the axile pole, the upset is removed, make and be located the top and form the clamping end between relative first clamping piece and the second clamping piece, wire rope arranges in the rope groove at its top, and pass through the through-hole in proper order, the rope groove of bottom, when this clamping end applys pulling force, through the reverse clamp face of Z shape of first clamping part, second clamping part, be located the bottom and relative first clamping piece and second clamping piece also clamp simultaneously, apply two sections pulling force to wire rope, and then prevent wire rope from skidding, then correspond fastening connection with relative first clamping piece, second clamping piece respectively.
The invention discloses the following technical effects: the structure of first clamping part, second clamping part is the reverse clamp face of Z shape, link together through the spindle, be located at the top and form the clamping end between relative first clamping piece and the second clamping piece, wire rope arranges in the rope groove at its top, when this clamping end applys pulling force, through the reverse clamp face of Z shape of first clamping part, second clamping part, be located the bottom and relative first clamping piece and second clamping piece also can press from both sides tightly simultaneously, apply two sections pulling force to wire rope, can more effectually prevent wire rope from skidding, improve the stability of experimental process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of an experimental clamp for a wire rope of the present invention;
FIG. 2 is a front view of a first clamping portion of the present invention;
FIG. 3 is a side view of a first clamping portion of the present invention;
FIG. 4 is a front view of a second clamping portion of the present invention;
FIG. 5 is a side view of a second clamping portion of the present invention;
FIG. 6 is a front view of the shaft of the present invention;
FIG. 7 is a side view of the shaft of the present invention;
wherein, 1 is first lantern ring, 2 is first grip block, 3 is the second lantern ring, 4 is the second grip block, 5 is the axostylus axostyle, 6 is the through-hole, 7 is the rope groove, 8 is the elastic sleeve, 9 is the elastic bulge, 10 is the guide pin bushing, 11 is the bolt.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1-7, the invention provides an experimental clamp for a steel wire rope, comprising a first clamping part and a second clamping part which are mutually connected in an axial manner, wherein a steel wire rope is arranged between the first clamping part and the second clamping part, the first clamping part comprises a first lantern ring 1, two ends of the first lantern ring 1 are respectively fixed with a first clamping block 2 with central symmetry, the second clamping part comprises a second lantern ring 3, two ends of the second lantern ring 3 are respectively fixed with a second clamping block 4 with central symmetry, the two central symmetry modes take the corresponding lantern rings as circle centers, the first clamping part and the second clamping part are respectively in two Z-shaped reverse clamping surface structures, a shaft lever 5 is penetrated between the first lantern ring 1 and the second lantern ring 3, the two clamping parts can rotate through the shaft lever 5, a through hole 6 penetrating through the side surface of the shaft lever 5 is arranged, the size is matched with the steel wire rope, the first clamping block 2 and the second clamping block 4 are correspondingly arranged, the first lantern ring 1 and the second lantern ring 3 are concentrically arranged, therefore, among the 4 clamping blocks, the first clamping block 2 and the second clamping block 4 at the top are opposite, the first clamping block 2 and the second clamping block 4 at the bottom are opposite, the end face of the first clamping block 2, which is close to the second clamping block 4, is provided with a groove, the end face of the second clamping block 4, which is close to the first clamping block 2, is provided with the same groove, a rope groove 7 is formed between the two grooves of the first clamping block 2 and the second clamping block 4, which are opposite, the two rope grooves 7 are respectively positioned at the upper end and the lower end of the through hole 6, the steel wire rope is arranged between the two rope grooves 7 and the through hole 6 in a penetrating way, the groove wall of the rope groove 7 is provided with lines which are matched with the winding direction of the steel wire rope, the groove is provided with the same lines, when the steel wire rope is in a stretching state, the steel wire rope can be embedded into the same winding lines, so that the contact area between the steel wire rope and the integral clamp is increased, and the steel wire rope is further clamped.
The structure of first clamping part, second clamping part is the reverse clamp face of Z shape, is in the same place through axostylus axostyle 5 coupling, is located and forms the clamping end between the relative first clamping piece 2 of top and the second clamping piece 4, and wire rope arranges in the rope groove 7 at its top, when this clamping end applys pulling force, through the reverse clamp face of Z shape of first clamping part, second clamping part, is located and the relative first clamping piece 2 of bottom and second clamping piece 4 also can clamp simultaneously, applys two sections pulling force to wire rope.
The whole clamp is made of metal, and has good wear resistance and high hardness.
Further optimizing scheme, cup jointed elastic sleeve 8 in the through-hole 6, be fixed with a plurality of elastic bulge 9 on the medial surface of elastic sleeve 8, be located the wire rope of center through-hole 6 part, when its inserts through-hole 6, hug closely with elastic bulge 9, further improved frictional force, and can not produce the damage to wire rope, strengthened the performance of preventing skidding.
Furthermore, as a fixing mode between the clamping parts, two symmetrically arranged guide sleeves 10 are symmetrically fixed on two side surfaces of the first clamping block 2 respectively, two symmetrically arranged identical guide sleeves 10 are symmetrically fixed on two side surfaces of the second clamping block 4 respectively, 8 guide sleeves are provided in total, the guide sleeves 10 of the first clamping block 2 and the second clamping block 4 which are opposite are positioned on the same horizontal line, the inner cavity of the guide sleeve 10 is provided with threads, two opposite guide sleeves 10 which are positioned on the same side are detachably connected with bolts 11 through threads, each bolt 11 is screwed between the two opposite guide sleeves 10 through 4 bolts 11, each opposite group of first clamping block 2 and each second clamping block 4 can be fastened, the positioning effect is good, and the stability of the whole clamp is further ensured.
The application method of the experimental clamp for the steel wire rope comprises the following specific steps: the structure of first clamping part, the reverse clamp face of second clamping part is Z shape, link together through axostylus axostyle 5, the upset is removed, make and be located and form the clamping end between first clamping piece 2 and the second clamping piece 4 that top and are relative, wire rope arranges in the rope groove 7 at its top, and pass through hole 6 in proper order, rope groove 7 of bottom, when this clamping end applys the pulling force, through the reverse clamp face of Z shape of first clamping part, second clamping part, be located and relative first clamping piece 2 and the second clamping piece 4 of bottom also can clamp simultaneously, apply two sections pulling force to wire rope, and then prevent wire rope from skidding, then correspond fastening connection with relative first clamping piece 2, second clamping piece 4 respectively.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements 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.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (4)
1. An experimental clamp for a steel wire rope is characterized in that: including first clamping part and the second clamping part of mutual coupling, be equipped with wire rope between first clamping part and the second clamping part, first clamping part includes first lantern ring (1), the both ends of first lantern ring (1) are fixed with central symmetry's first grip block (2) respectively, second clamping part includes second lantern ring (3), first clamping part second clamping part is two piece Z reverse clamp face structures respectively, first lantern ring (1), second lantern ring (3) are concentric to be set up, the both ends of second lantern ring (3) are fixed with central symmetry's second grip block (4) respectively, the top first grip block (2) second grip block (4) are relative, the bottom first grip block (2) second grip block (4) are relative, wear to be equipped with axostylus axostyle (5) between first lantern ring (1) and second lantern ring (3), through-hole (6) have been seted up on the side of second clamping part for two Z reverse clamp face structures respectively, first lantern ring (1), second lantern ring (3) both ends are fixed with central symmetry's second grip block (4) respectively, second grip block (4) are close to be equipped with on the second end face (4) and are relative recess (4) are seted up, second grip block (4) are close to one end face (4) and are formed on the second end face (4), the two rope grooves (7) are respectively positioned at the upper end and the lower end of the through hole (6), and the steel wire rope is arranged between the two rope grooves (7) and the through hole (6) in a penetrating way;
two symmetrically arranged guide sleeves (10) are symmetrically fixed on two side surfaces of the first clamping block (2), and two symmetrically arranged identical guide sleeves (10) are symmetrically fixed on two side surfaces of the second clamping block (4);
the inner cavity of the guide sleeve (10) is provided with threads;
and bolts (11) are detachably connected between the two guide sleeves (10) which are positioned on the same side and opposite to each other through threads.
2. The experimental clamp for a steel wire rope according to claim 1, wherein: and the groove wall of the rope groove (7) is provided with lines which are matched with the winding direction of the steel wire rope.
3. The experimental clamp for a steel wire rope according to claim 1, wherein: an elastic sleeve (8) is sleeved in the through hole (6), and a plurality of elastic bulges (9) are fixed on the inner side surface of the elastic sleeve (8).
4. A method for using the experimental clamp for the steel wire rope, which is characterized in that the experimental clamp for the steel wire rope according to claim 1 comprises the following specific steps: the structure of first clamping part, second clamping part is Z shape reverse clamp face, link together through axostylus axostyle (5) coupling, the upset is removed, make and be located and form the clamping end between first clamping piece (2) and the second clamping piece (4) that top and are relative, wire rope arranges in rope groove (7) at its top, and pass through-hole (6) in proper order, rope groove (7) of bottom, when this clamping end applys pulling force, Z shape reverse clamp face through first clamping part, second clamping part, be located bottom and relative first clamping piece (2) and second clamping piece (4) also can clamp simultaneously, apply two sections pulling force to wire rope, and then prevent wire rope from skidding, then correspond fastening connection with relative first clamping piece, second clamping piece respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010902665.7A CN111999174B (en) | 2020-09-01 | 2020-09-01 | Experimental clamp for steel wire rope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010902665.7A CN111999174B (en) | 2020-09-01 | 2020-09-01 | Experimental clamp for steel wire rope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111999174A CN111999174A (en) | 2020-11-27 |
| CN111999174B true CN111999174B (en) | 2024-01-19 |
Family
ID=73464958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010902665.7A Active CN111999174B (en) | 2020-09-01 | 2020-09-01 | Experimental clamp for steel wire rope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111999174B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR774604A (en) * | 1934-06-16 | 1934-12-10 | Safety device applicable to transportable constructions, such as overhead and loading cranes, cranes and other similar constructions | |
| US3850029A (en) * | 1973-07-16 | 1974-11-26 | Measurex Corp | Apparatus for measuring the compressibility of cigarettes and the like |
| SU523214A1 (en) * | 1974-07-02 | 1976-07-30 | Волжско-Камский Научно-Исследовательский И Конструкторско-Технологический Институт Водного Лесотранспорта | Clamp for fastening rope ends |
| FR2373705A2 (en) * | 1976-12-07 | 1978-07-07 | Pradon Jacques | Wire grips with taper surfaces between jaw portions - include elastic layers and rollers for pretensioning |
| US5224386A (en) * | 1991-08-26 | 1993-07-06 | Curtis John M | Tensile testing grip apparatus |
| EP0620180A2 (en) * | 1993-04-16 | 1994-10-19 | Werner Herz | Safety tongs for rail mounted equipment, like e.g. a crane |
| CN203688352U (en) * | 2013-12-26 | 2014-07-02 | 天津冶金集团中兴盛达钢业有限公司 | Clamping device for completing steel wire rope breaking test with vertical material tensile testing machine |
| CN104006114A (en) * | 2014-06-11 | 2014-08-27 | 无锡通用钢绳有限公司 | Clamping device used for connecting steel wire ropes |
| CN104192700A (en) * | 2014-07-09 | 2014-12-10 | 国家电网公司 | Hanger for rod piece |
| JP2015031302A (en) * | 2013-07-31 | 2015-02-16 | 大洋製器工業株式会社 | Wire clip |
| CN207764041U (en) * | 2018-01-15 | 2018-08-24 | 深圳市讯力实业有限公司 | A kind of electric wire detection fixator |
| CN208190736U (en) * | 2018-05-31 | 2018-12-04 | 赖俊生 | A kind of handset bracket of multidirectional fixation |
-
2020
- 2020-09-01 CN CN202010902665.7A patent/CN111999174B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR774604A (en) * | 1934-06-16 | 1934-12-10 | Safety device applicable to transportable constructions, such as overhead and loading cranes, cranes and other similar constructions | |
| US3850029A (en) * | 1973-07-16 | 1974-11-26 | Measurex Corp | Apparatus for measuring the compressibility of cigarettes and the like |
| SU523214A1 (en) * | 1974-07-02 | 1976-07-30 | Волжско-Камский Научно-Исследовательский И Конструкторско-Технологический Институт Водного Лесотранспорта | Clamp for fastening rope ends |
| FR2373705A2 (en) * | 1976-12-07 | 1978-07-07 | Pradon Jacques | Wire grips with taper surfaces between jaw portions - include elastic layers and rollers for pretensioning |
| US5224386A (en) * | 1991-08-26 | 1993-07-06 | Curtis John M | Tensile testing grip apparatus |
| EP0620180A2 (en) * | 1993-04-16 | 1994-10-19 | Werner Herz | Safety tongs for rail mounted equipment, like e.g. a crane |
| JP2015031302A (en) * | 2013-07-31 | 2015-02-16 | 大洋製器工業株式会社 | Wire clip |
| CN203688352U (en) * | 2013-12-26 | 2014-07-02 | 天津冶金集团中兴盛达钢业有限公司 | Clamping device for completing steel wire rope breaking test with vertical material tensile testing machine |
| CN104006114A (en) * | 2014-06-11 | 2014-08-27 | 无锡通用钢绳有限公司 | Clamping device used for connecting steel wire ropes |
| CN104192700A (en) * | 2014-07-09 | 2014-12-10 | 国家电网公司 | Hanger for rod piece |
| CN207764041U (en) * | 2018-01-15 | 2018-08-24 | 深圳市讯力实业有限公司 | A kind of electric wire detection fixator |
| CN208190736U (en) * | 2018-05-31 | 2018-12-04 | 赖俊生 | A kind of handset bracket of multidirectional fixation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111999174A (en) | 2020-11-27 |
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| CB03 | Change of inventor or designer information |
Inventor after: He Shan Inventor after: Jiang Aihua Inventor after: Li Zhongxing Inventor after: Peng Qifeng Inventor after: Huang Guojian Inventor before: Jiang Aihua Inventor before: He Shan Inventor before: Li Zhongxing Inventor before: Peng Qifeng Inventor before: Huang Guojian |
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| TR01 | Transfer of patent right |
Effective date of registration: 20240530 Address after: 510663 No.9, Keke Road, Huangpu District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Special Equipment Testing and Research Institute (Guangzhou Special Equipment Accident Investigation Technology Center Guangzhou Elevator Safety Operation Monitoring Center) Country or region after: China Address before: Room 201, Building B, No. 9 Science Research Road, Huangpu District, Guangzhou City, Guangdong Province, 510663 Patentee before: GUANGZHOU ACADEMY OF SPECIAL EQUIPMENT INSPECTION & TESTING Country or region before: China |
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