CN113879975B - Double-girder multi-hoisting-point crane and working method thereof - Google Patents
Double-girder multi-hoisting-point crane and working method thereof Download PDFInfo
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- CN113879975B CN113879975B CN202111233779.8A CN202111233779A CN113879975B CN 113879975 B CN113879975 B CN 113879975B CN 202111233779 A CN202111233779 A CN 202111233779A CN 113879975 B CN113879975 B CN 113879975B
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- box
- point
- double
- hoisting
- girder
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- 238000000034 method Methods 0.000 title claims abstract description 7
- 230000002787 reinforcement Effects 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 abstract description 7
- 230000007246 mechanism Effects 0.000 description 7
- 238000004804 winding Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C11/00—Trolleys or crabs, e.g. operating above runways
- B66C11/02—Trolleys or crabs, e.g. operating above runways with operating gear or operator's cabin suspended, or laterally offset, from runway or track
- B66C11/04—Underhung trolleys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C11/00—Trolleys or crabs, e.g. operating above runways
- B66C11/16—Rope, cable, or chain drives for trolleys; Combinations of such drives with hoisting gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/12—Driving gear incorporating electric motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/26—Rope, cable, or chain winding mechanisms; Capstans having several drums or barrels
Abstract
The invention discloses a double-girder multi-hanging-point crane and a working method thereof, and relates to the technical field of cranes. The multi-hanging-point hanger can increase the connection point of the crane and the article to be lifted, increase the stability when lifting larger articles, is composed of two groups of box bodies, can be assembled with the connecting blocks conveniently by a user, and is provided with the reinforcing device, so that the overall stability of the multi-hanging-point hanger can be reinforced.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to a double-girder multi-hoisting-point crane and a working method thereof.
Background
The crane is a multi-action hoisting machine for vertically hoisting and horizontally carrying heavy objects in a certain range, and most of existing cranes hoist objects through hooks and move on a main beam through an electric hoist when working.
Through retrieval, chinese patent discloses a multi-hoisting point crane (publication No. CN 101607676B), which comprises a main beam, an operating mechanism, a lifting mechanism and an electric control system, wherein the operating mechanism comprises a bearing mechanism formed by a roller device and an elastic body and a driving mechanism formed by a motor, a speed reducer, a winding drum group, two groups of steel wire ropes, a pulley block and a pulley bracket; the lifting mechanism comprises more than 2 sets of hoisting mechanisms arranged on each main beam, adopts a duplex winding drum, a steel wire rope multi-layer winding and symmetrical rope descending mode, and adopts a mode that a lifting hook connecting piece is hinged or fixedly connected with a corresponding lifting hook group through a pin shaft respectively.
When the existing crane is hung, single-point hanging is mostly adopted, and when some articles with larger volumes are moved and the environment is poor, the articles can shake greatly, so that the lifting efficiency is low and the safety is poor.
Disclosure of Invention
The invention aims to provide a double-girder multi-hoisting point crane and a working method thereof, which solve the following technical problems:
how to improve the stability when handling the article with larger volume, prevent that it from rocking by a wide margin to improve stability and security.
The aim of the invention can be achieved by the following technical scheme:
the double-girder multi-hanging-point crane comprises two groups of door frames, wherein a double girder is fixedly connected between the two groups of door frames, an electric hoist is installed in the double girder, a connecting block is installed at the bottom end of the electric hoist, the connecting block comprises a connecting rope connected with the electric hoist, a hook is installed at the bottom end of the connecting block, and a multi-hanging-point hanger is installed at the outer side of the hook;
the multi-hanging-point hanger comprises an assembly box, a plurality of winders are mounted in the assembly box, connecting pieces are mounted on the winders and used for being connected with objects, a plurality of locking members used for limiting the winders are mounted on the side face of the assembly box, and a reinforcing device is mounted on the upper side of the assembly box and used for reinforcing the multi-hanging-point hanger.
As a further scheme of the invention: the assembly box comprises a connecting block, and is characterized in that the assembly box comprises a first box body and a second box body, a clamping groove is formed between the first box body and the second box body, the first box body and the second box body can be erected on two sides of the connecting block through the clamping groove, and locking bolts are connected between the first box body, the second box body and the hooks in a threaded mode.
As a further scheme of the invention: the winders are rectangular and uniformly distributed in the first box body and the second box body, so that stability in connection with articles can be improved.
As a further scheme of the invention: the reinforcement ware includes the fixed box with equipment case fixed connection, the side sliding connection of fixed box has the sliding tube, the side threaded connection of fixed box has the latch segment, the one end of sliding tube extends to the one side of the interior latch segment of fixed box, and the latch segment is located one side of sliding tube sliding track for prevent to hinder the sliding tube and remove.
As a further scheme of the invention: one end sliding connection of slip pipe has the extension pipe, the side fixedly connected with fixed pipe of extension pipe, the outside of fixed pipe rotates and is connected with the commentaries on classics roller.
As a further scheme of the invention: one end of the fixed pipe is rotationally connected with a limiting rod through a spiral spring and is used for realizing automatic resetting of the limiting rod.
As a further scheme of the invention: the winder comprises a roller body, one end of the roller body is fixedly connected with a fixing plate, and a plurality of annular embedded grooves are formed in the side face of the fixing plate.
As a further scheme of the invention: the connecting holes corresponding to the embedded grooves are formed in one side, close to the fixing plate, of the side face of the assembly box, and threaded pipes extending to one side are fixedly connected to the middle portions, located in the embedded grooves, of the side face of the assembly box.
As a further scheme of the invention: the locking component comprises a ring body, and a plurality of clamping rods corresponding to the embedded grooves are fixedly connected to the side face of the ring body.
As a further scheme of the invention: the inside of ring body has seted up the intercommunication groove, the size of intercommunication groove is greater than the size of screw thread barrel for the cover is established in the outside of screw thread barrel.
As a further scheme of the invention: the locking member includes a threaded sleeve for connection with a threaded tube.
The invention also discloses a working method of the double-girder multi-hoisting-point crane, which comprises the following steps:
step one: assembling an assembling box of the multi-hanging-point hanger to the outer side of the connecting block, erecting a reinforcement of the multi-hanging-point hanger to the outer side of a connecting rope of the connecting block, and finally locking and fixing the reinforcement;
step two: assembling the hooks with the articles to be lifted, and then extracting connecting pieces outside each winder in the multi-hanging-point hanger, and respectively assembling with the articles to be lifted;
step three: fixing the locking member with the winders in each multi-hanging-point hanger, and fixing the locking member;
step four: and (3) starting the electric hoist to hoist the article.
The invention has the beneficial effects that:
according to the invention, through the multi-hanging-point hanger, the connection point between the crane and the article to be lifted can be increased, so that the stability of the large article to be lifted is increased;
meanwhile, the multi-hanging-point hanger consists of two groups of box bodies, so that a user can conveniently assemble the multi-hanging-point hanger with the connecting block, and meanwhile, the multi-hanging-point hanger is provided with a reinforcing device, and the reinforcing device is used for assembling the multi-hanging-point hanger with the connecting rope of the connecting block and can reinforce the overall stability of the multi-hanging-point hanger by being sleeved on the outer side of the connecting rope;
on the other hand, a plurality of winders which are uniformly distributed are arranged in the multi-hanging-point hanger, and each connecting piece is connected with an article by the winders and can be fixed by the locking component, so that the stability of the multi-hanging-point hanger during working can be maintained;
in conclusion, the multi-hanging-point hanger is reasonable in structure and convenient to use, and can prevent articles from shaking greatly during lifting, so that the safety of a crane during working can be improved.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view of the multi-point hanger of the present invention;
FIG. 3 is a top cross-sectional view of the assembled bin of the invention;
FIG. 4 is a perspective view of the locking member of the present invention;
FIG. 5 is a partial perspective view of the retractor of the invention;
in the figure: 1. a door frame; 2. a double main beam; 3. an electric hoist; 4. a connecting block; 5. a hook; 6. a multi-suspension point hanger; 61. assembling a box; 62. a reinforcement; 63. a winder; 64. a locking member; 65. a connecting piece; 621. a fixed box; 622. a sliding tube; 623. a locking block; 624. an extension tube; 625. a fixed tube; 626. a rotating roller; 627. a limit rod; 611. a first case; 612. a second case; 613. a locking bolt; 614. a clamping groove; 641. a ring body; 642. a clamping rod; 643. a communication groove; 631. a roller body; 632. a fixing plate; 633. embedded in the groove.
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.
Referring to fig. 1-2, the invention discloses a double-girder multi-hoisting-point crane, which comprises two groups of door frames 1, wherein a double girder 2 is fixedly connected between the two groups of door frames 1, an electric hoist 3 is arranged in the double girder 2, a connecting block 4 is arranged at the bottom end of the electric hoist 3, the connecting block 4 comprises a connecting rope connected with the electric hoist 3, a hook 5 is arranged at the bottom end of the connecting block 4, and a multi-hoisting-point hanger 6 is arranged at the outer side of the hook 5;
the multi-hanging-point hanger 6 comprises an assembly box 61, a plurality of winders 63 are mounted in the assembly box 61, connecting pieces 65 are mounted on the winders 63 and used for being connected with articles, a plurality of locking members 64 used for limiting the winders 63 are mounted on the side face of the assembly box 61, a reinforcing device 62 is mounted on the upper side of the assembly box 61, and the reinforcing device 62 reinforces the multi-hanging-point hanger 6.
The reinforcement 62 includes a fixed box 621 fixedly connected with the assembly box 61, a sliding tube 622 is slidably connected to a side surface of the fixed box 621, a locking block 623 is screwed to a side surface of the fixed box 621, one end of the sliding tube 622 extends to one side of the locking block 623 in the fixed box 621, and the locking block 623 is located on one side of a sliding track of the sliding tube 622 and is used for preventing the sliding tube 622 from being blocked.
One end of the sliding tube 622 is slidably connected with an extension tube 624, a side surface of the extension tube 624 is fixedly connected with a fixed tube 625, and a rotating roller 626 is rotatably connected to the outer side of the fixed tube 625.
One end of the fixed tube 625 is rotatably connected with a limit rod 627 through a coil spring, and is used for realizing automatic resetting of the limit rod 627.
Referring to fig. 3, the assembly box 61 includes a first box body 611 and a second box body 612, a clamping groove 614 is formed between the first box body 611 and the second box body 612, the first box body 611 and the second box body 612 can be erected on two sides of the connecting block 4 through the clamping groove 614, and locking bolts 613 are screwed between the first box body 611 and the second box body 612 and the hooks 5.
Referring to fig. 5, a plurality of winders 63 are rectangular and uniformly distributed inside the first box body 611 and the second box body 612, so as to improve the stability when connected with objects, the winders 63 all include a roller body 631, one end of the roller body 631 is fixedly connected with a fixing plate 632, a plurality of annular embedded grooves 633 are formed on the side surface of the fixing plate 632, connecting holes corresponding to the embedded grooves 633 are formed on one side of the side surface of the assembly box 61 close to the fixing plate 632, and a threaded pipe extending to one side is fixedly connected to the middle part of each group of embedded grooves 633 on the side surface of the assembly box 61.
Referring to fig. 4, the locking member 64 includes a ring body 641, a plurality of clamping rods 642 corresponding to the embedded grooves 633 are fixedly connected to a side surface of the ring body 641, a communicating groove 643 is formed in the ring body 641, the size of the communicating groove 643 is larger than that of the threaded gun barrel and is used for being sleeved on the outer side of the threaded gun barrel, and the locking member 64 includes a threaded sleeve and is used for being connected with a threaded pipe.
The working principle of the invention is as follows:
assembling the assembling box 61 of the multi-suspension-point hanger 6 to the outer side of the connecting block 4, during assembling, the first box body 611 and the second box body 612 of the assembling box 61 are respectively installed to the two sides of the connecting block 4, then the first box body 611 and the second box body 612 are assembled with the connecting block 4 through the locking bolts 613, then the reinforcement 62 of the multi-suspension-point hanger 6 is erected to the outer side of the connecting rope of the connecting block 4, the sliding pipe 622 of the reinforcement 62 is slid along the fixed box 621, the rotating roller 626 is slid to one side of the connecting rope of the hook 5, the sliding pipe 622 is reversely slid, the rotating roller 626 is moved to one side of the connecting rope, the limiting rod 627 is rotated through the spiral spring to prevent the obstruction to the connecting rope, and then the locking block 623 is screwed to lock and fix the reinforcement 62;
assembling the hooks 5 with the articles to be lifted, and then extracting the connecting pieces 65 outside the winders 63 in the multi-hanging-point hanger 6, and respectively assembling with the articles to be lifted;
the locking member 64 is fixed with the winders 63 in each multi-hanging-point hanger 6, when the locking member is fixed, the clamping rod 642 of the locking member 64 passes through the connecting hole on the side surface of the assembly box 61 and is installed in the embedded groove 633 of the winders 63, when the locking member is not aligned, the winders 63 can be properly rotated, the communicating groove 643 of the locking member 64 is sleeved outside the corresponding threaded gun barrel of the assembly box 61 during installation, finally, the threaded sleeves of the locking member 64 are respectively assembled with each threaded gun barrel, the locking member 64 is fixed, and finally, the electric hoist 3 is started, so that the article can be lifted.
In the description of the present invention, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and for simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, as well as a specific orientation configuration and operation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (7)
1. The double-girder multi-hoisting-point crane comprises two groups of door frames (1), wherein a double girder (2) is fixedly connected between the two groups of door frames (1), an electric hoist (3) is arranged in the double girder (2), a hook (5) is arranged at the bottom end of the electric hoist (3) through a connecting block (4), and the double-girder multi-hoisting-point crane is characterized in that a multi-hoisting-point hanger (6) is arranged at the outer side of the hook (5);
the multi-suspension-point hanger (6) comprises an assembly box (61), wherein a plurality of winders (63) are arranged in the assembly box (61), connecting pieces (65) are arranged on the winders (63), a plurality of locking members (64) used for limiting the winders (63) are arranged on the side surface of the assembly box (61), and a reinforcement (62) is arranged on the upper side of the assembly box (61);
the reinforcement device (62) comprises a fixed box (621) fixedly connected with the assembly box (61), a sliding pipe (622) is slidably connected to the side surface of the fixed box (621), a locking block (623) is connected to the side surface of the fixed box (621) in a threaded mode, and one end of the sliding pipe (622) extends to one side of the locking block (623) in the fixed box (621);
one end of the sliding tube (622) is connected with an extension tube (624) in a sliding manner, the side surface of the extension tube (624) is fixedly connected with a fixed tube (625), and the outer side of the fixed tube (625) is rotatably connected with a rotating roller (626);
one end of the fixed pipe (625) is rotatably connected with a limit rod (627) through a coil spring.
2. The double-girder multi-hoisting point crane according to claim 1, wherein the assembly box (61) comprises a first box body (611) and a second box body (612), a clamping groove (614) is formed between the first box body (611) and the second box body (612), and locking bolts (613) are screwed between the first box body (611) and the second box body (612) and the hooks (5).
3. The double girder multi-hoisting point crane according to claim 2, characterized in that several winders (63) are rectangular and uniformly distributed inside the first box (611) and the second box (612).
4. The double-girder multi-hoisting-point crane according to claim 1, wherein the winders (63) comprise roller bodies (631), one end of each roller body (631) is fixedly connected with a fixing plate (632), and a plurality of annular embedded grooves (633) are formed in the side surfaces of the fixing plates (632).
5. The double-girder multi-hoisting point crane according to claim 4, wherein the side surfaces of the assembly boxes (61) are provided with connecting holes corresponding to the embedded grooves (633) on one side close to the fixing plate (632), and the middle parts of the side surfaces of the assembly boxes (61) located in the embedded grooves (633) are fixedly connected with threaded pipes extending to one side.
6. The double-girder multi-hoisting point crane according to claim 4, wherein the locking member (64) comprises a ring body (641), a plurality of clamping rods (642) corresponding to the embedded grooves (633) are fixedly connected to the side surface of the ring body (641), and a communication groove (643) is formed in the ring body (641).
7. The method of operating a double girder multi-suspension point crane according to claim 1, comprising the steps of:
step one: assembling an assembling box (61) of the multi-hanging-point hanger (6) to the outer side of the connecting block (4), and erecting a reinforcement (62) of the multi-hanging-point hanger (6) to the outer side of a connecting rope of the connecting block (4);
a sliding tube (622) of the reinforcement (62) slides along the fixed box (621), a rotating roller (626) slides to one side of the connecting rope of the hook (5), the sliding tube (622) is reversely slid, the rotating roller (626) moves to one side of the connecting rope, a limiting rod (627) rotates through a spiral spring to prevent the blocking of the connecting rope, and then a locking block (623) is screwed to lock and fix the reinforcement (62);
step two: assembling the hooks (5) with the articles to be lifted, and then extracting connecting pieces (65) outside each winder (63) in the multi-hanging-point hanger (6) and respectively assembling with the articles to be lifted;
step three: fixing the locking member (64) with the reel (63) in each multi-point hanger (6);
step four: and (3) starting the electric hoist to hoist the article.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111233779.8A CN113879975B (en) | 2021-10-22 | 2021-10-22 | Double-girder multi-hoisting-point crane and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111233779.8A CN113879975B (en) | 2021-10-22 | 2021-10-22 | Double-girder multi-hoisting-point crane and working method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113879975A CN113879975A (en) | 2022-01-04 |
| CN113879975B true CN113879975B (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111233779.8A Active CN113879975B (en) | 2021-10-22 | 2021-10-22 | Double-girder multi-hoisting-point crane and working method thereof |
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| Country | Link |
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| CN (1) | CN113879975B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104501A (en) * | 2007-06-29 | 2008-01-16 | 大连华锐股份有限公司 | Double main bear multiple hanging point crane |
| WO2009003332A1 (en) * | 2007-06-29 | 2009-01-08 | Dalian Huarui Co., Ltd. | Wire rope space anti-interference arrangement for crane with multiple hoisting points |
| EP2388227A1 (en) * | 2010-05-20 | 2011-11-23 | Rotzler Gmbh + Co. Kg | Crane hook with a hook weight assembly |
| CN102267664A (en) * | 2011-05-27 | 2011-12-07 | 中国一冶集团有限公司 | Method for installing bridge crane using load-supporting roof beam for hoisting and usage thereof |
| DE202017105694U1 (en) * | 2017-09-20 | 2017-09-27 | Henan Shengyuan Hoisting Machinery Co., Ltd | Double ring electric hanging crane |
| CN111096283A (en) * | 2018-10-27 | 2020-05-05 | 林庆云 | Abalone culture feeding equipment with annular track and steel rope lifting mechanism |
| DE212020000531U1 (en) * | 2020-05-25 | 2021-10-15 | Suzhou Maogang Machinery Accessories Co. Ltd | New type of lifting tool for converter valve cooling units |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4275846B2 (en) * | 2000-08-25 | 2009-06-10 | 本田技研工業株式会社 | Hanger structure for V-type vertical engine and outboard motor |
-
2021
- 2021-10-22 CN CN202111233779.8A patent/CN113879975B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104501A (en) * | 2007-06-29 | 2008-01-16 | 大连华锐股份有限公司 | Double main bear multiple hanging point crane |
| WO2009003332A1 (en) * | 2007-06-29 | 2009-01-08 | Dalian Huarui Co., Ltd. | Wire rope space anti-interference arrangement for crane with multiple hoisting points |
| EP2388227A1 (en) * | 2010-05-20 | 2011-11-23 | Rotzler Gmbh + Co. Kg | Crane hook with a hook weight assembly |
| CN102267664A (en) * | 2011-05-27 | 2011-12-07 | 中国一冶集团有限公司 | Method for installing bridge crane using load-supporting roof beam for hoisting and usage thereof |
| DE202017105694U1 (en) * | 2017-09-20 | 2017-09-27 | Henan Shengyuan Hoisting Machinery Co., Ltd | Double ring electric hanging crane |
| CN111096283A (en) * | 2018-10-27 | 2020-05-05 | 林庆云 | Abalone culture feeding equipment with annular track and steel rope lifting mechanism |
| DE212020000531U1 (en) * | 2020-05-25 | 2021-10-15 | Suzhou Maogang Machinery Accessories Co. Ltd | New type of lifting tool for converter valve cooling units |
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| Publication number | Publication date |
|---|---|
| CN113879975A (en) | 2022-01-04 |
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