CN114229682A - Lifting appliance for centering adjustment of lithium battery - Google Patents
Lifting appliance for centering adjustment of lithium battery Download PDFInfo
- Publication number
- CN114229682A CN114229682A CN202111583545.6A CN202111583545A CN114229682A CN 114229682 A CN114229682 A CN 114229682A CN 202111583545 A CN202111583545 A CN 202111583545A CN 114229682 A CN114229682 A CN 114229682A
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- China
- Prior art keywords
- annular
- horizontal
- annular track
- lithium battery
- vertical
- 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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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
- B66C1/425—Gripping members engaging only the external or internal surfaces of the articles motor actuated
- B66C1/427—Gripping members engaging only the external or internal surfaces of the articles motor actuated by hydraulic or pneumatic motors
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- 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
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a lithium battery centering adjustment lifting appliance, and belongs to the technical field of electric automobile lithium battery assembly. An annular track is fixedly connected below the connecting beam, and a plurality of pulleys are arranged on the annular track; the lower end of the suspension arm is fixedly connected with a clamping arm, and the clamping arm points to the center of the annular track. The section of the annular track is rectangular, an annular boss is arranged on the upper side face of the annular track, an annular friction plate is fixed on the lower position of the inner side face of the annular track, and an annular rack is fixed on the upper position of the inner side face of the annular track. The tackle comprises an L-shaped support, a horizontal roller and a vertical roller are mounted on the horizontal part of the L-shaped support, and a horizontal transmission gear and a sliding supporting block are mounted on the vertical part of the L-shaped support. According to the invention, by arranging the annular hanging rail and the independently adjusted pulley, the position of the clamping arm is free and flexible, and the clamping device can be suitable for clamping lithium batteries with different sizes and special-shaped structures; the clamping arm always points to the center of gravity of the lithium battery at any adjusting position, and the stability of the lithium battery in the hoisting process is ensured.
Description
Technical Field
The invention relates to the technical field of electric automobile lithium battery assembly, in particular to a lithium battery centering adjustment lifting appliance.
Background
With the rapid development of the domestic new energy bus industry in recent years, the lithium battery box serving as an energy carrier of the electric automobile also begins to diversify. In the production process of the lithium battery, the lithium battery needs to be carried by using a hoisting clamp, and each whole vehicle manufacturer seeks a faster, more effective and safer hoisting mode to reduce the labor intensity of workers.
Chinese patent discloses a hoist (CN107954313A) for battery box belongs to battery processing equipment technical field, and its technical scheme main points include the lifting clamp plate of being connected with the driving lifting hook and set up respectively the piece is hung to the first piece and the second of lifting clamp plate both sides, first hanging and second hang a structure the same, all including slide in the davit of lifting clamp plate length direction both sides, be used for connecting two the backup pad and the setting of davit are in just be used for the drive backup pad one side the backup pad is followed the drive assembly that lifting clamp plate length direction removed. The utility model discloses a through vertical and two kinds of horizontal regulation structures, adapt to not unidimensional battery box, avoid the danger of artifical transport, and can realize the hoist and mount of battery box fast.
The prior art has the following defects: although 4 hooks can be adjusted in the longitudinal direction and the transverse direction, 4 hooks cannot be independently adjusted, and when a battery or a battery box with a special-shaped structure is encountered, the hooks cannot provide effective tension; 4 lifting hooks adopt and articulate the structure, need set up the rings that play that correspond on battery or the battery box, and the lifting hook can not provide effectual clamping-force moreover, and when the battery box focus was not placed in the middle, the lifting hook atress was inhomogeneous, the easy slope.
Disclosure of Invention
In order to solve the technical problem, the invention provides a lithium battery centering adjustment lifting appliance. This hoist is adjusted to lithium cell heart is through setting up annular hanger rail and the coaster of independently adjusting, guarantees every centre gripping arm directional centre of a circle all the time, provides effectual clamping force.
The invention is realized by the following technical scheme: a lithium battery centering adjustment lifting appliance comprises a connecting beam, wherein an annular rail is fixedly connected to the lower portion of the connecting beam, and a plurality of pulleys are mounted on the annular rail; a suspension arm is fixedly connected to the lower part of the pulley, a clamping arm is fixed to the lower end of the suspension arm, and the clamping arm points to the center of the annular track; the section of the annular track is rectangular, an annular boss is arranged on the upper side surface of the annular track, an annular friction plate is fixed at the position, close to the lower part, of the inner side surface of the annular track, and an annular rack is fixed at the position, close to the upper part, of the inner side surface of the annular track; the pulley comprises an L-shaped support, the horizontal part of the L-shaped support is positioned above the annular track, and the vertical part of the L-shaped support is positioned on the inner side of the annular track; a horizontal roller and a vertical roller are arranged on the horizontal part of the L-shaped bracket; the horizontal roller is in rolling fit with the outer side surface of the annular boss; the vertical roller is in rolling fit with the upper surface of the annular track on the inner side of the annular boss; a horizontal transmission gear and a sliding supporting block are arranged on the vertical part of the L-shaped bracket; the horizontal transmission gear is connected with a power device and is meshed with the annular rack; the sliding support block is in sliding fit with the annular friction plate.
It further comprises the following steps: the number of the horizontal rollers and the number of the vertical rollers are two; the two horizontal rollers are arranged in front and back, and are symmetrical along the horizontal transmission gear; the two vertical rollers are arranged in front and back, and are symmetrical along the horizontal transmission gear.
A pair of ear plates is respectively fixed on the front side and the rear side of the horizontal part of the L-shaped bracket, and the vertical roller is rotatably installed on the pair of ear plates through a horizontal pin shaft; avoidance grooves matched with the vertical rollers are formed in the front side and the rear side of the horizontal part of the L-shaped support; the horizontal roller is rotatably arranged on the horizontal part of the L-shaped bracket through a vertical pin shaft.
The power device comprises a rotary motor, a power device and a control device, wherein the power device comprises a power device and a control device, wherein the power device is fixedly arranged on the L-shaped support; the output shaft of the rotary motor is fixedly connected with a shaft center hole of the horizontal transmission gear; and the vertical part of the L-shaped bracket is provided with an avoiding hole matched with the horizontal transmission gear.
The vertical part of the L-shaped bracket is provided with a chute for mounting the sliding supporting block; and a fastening bolt is arranged on the back side of the L-shaped support sliding groove through threaded connection, and the inner end of the fastening bolt abuts against the sliding support block.
The upper end of the suspension arm is provided with a notch, the notch at the upper end of the suspension arm is matched and embedded at the lower end of the vertical part of the L-shaped support, and the notch at the upper end of the suspension arm is fixedly connected with the vertical part of the L-shaped support through a connecting bolt.
The clamping arm comprises a sleeve fixed at the lower end of the suspension arm, and an inclined stay bar is connected between the sleeve and the suspension arm; a sliding rod is slidably mounted in the sleeve, and the upper side of the sleeve is fixedly connected with an air cylinder; the cylinder and the slide bar are arranged in parallel, the end of the piston rod of the cylinder faces to one side far away from the center of the annular track, and the end of the piston rod of the cylinder and one end, far away from the center of the annular track, of the slide bar are fixedly connected through a connecting plate.
And one end of the sliding rod, which faces the center of the annular track, is hinged with a clamping jaw through a hinged shaft.
The connecting beam comprises a pair of cross beams and a pair of longitudinal beams, and the longitudinal beams are vertically and fixedly connected between the two cross beams; the end part of the cross beam is fixedly connected with the bottom of the annular track through an L-shaped connecting rod.
Compared with the prior art, the invention has the beneficial effects that: by arranging the annular hanging rail and the independently adjusted pulley, the positions of the 4 clamping arms are free and flexible, and the 4 clamping arms can be in asymmetric positions and can be suitable for clamping lithium batteries with different sizes and special-shaped structures; the 4 centre of a circle are directional all the time to the centre of a circle, and when hoist and mount lithium cell, keep lithium cell focus unanimous basically with the circular orbit center, 4 centre gripping arms just can be at the directional lithium cell focus of arbitrary adjusting position, ensure hoist and mount in-process lithium cell steady.
Drawings
FIG. 1 is a top view of the present invention;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is a schematic view of the installation of the trolley on the circular track section;
in the figure: 1. a connecting beam; 1-1, a cross beam; 1-2, longitudinal beams; 1-3, an L-shaped connecting rod; 2. an annular track; 2-1, annular boss; 2-2, a ring-shaped rack; 2-3, an annular friction plate; 3. a pulley; 4. a suspension arm; 5. a clamp arm; 5-1, sleeve; 5-2, a diagonal brace; 5-3, a cylinder; 5-4, connecting plates; 5-5, a slide bar; 5-6, and a hinged shaft; 5-7, clamping claws; 6. an L-shaped bracket; 6-1, avoiding the groove; 6-2, avoiding holes; 6-3, a chute; 6-4, ear plates; 7. a horizontal roller; 8. a vertical roller; 9. a horizontal transmission gear; 10. a sliding support block; 11. a horizontal pin shaft; 12. a vertical pin shaft; 13. mounting a plate; 14. a rotary motor; 15. tightening the bolt; 16. and connecting the bolts.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 3, a lithium battery centering adjustment lifting tool comprises a connecting beam 1, and an annular rail 2 is fixedly connected to the lower portion of the connecting beam 1. A plurality of pulleys 3 are arranged on the annular track 2, and 4 pulleys are optionally arranged in the embodiment. A suspension arm 4 is fixedly connected below the pulley 3, a clamping arm 5 is fixed at the lower end of the suspension arm 4, and the clamping arm 5 points to the center of the circular track 2.
The section of the annular track 2 is rectangular, an annular boss 2-1 is arranged on the upper side surface of the annular track 2, an annular friction plate 2-3 is fixed on the lower position of the inner side surface of the annular track 2, and an annular rack 2-2 is fixed on the upper position of the inner side surface of the annular track 2. The connecting beam 1 specifically comprises a pair of cross beams 1-1 and a pair of longitudinal beams 1-2, and the longitudinal beams 1-2 are vertically and fixedly connected between the two cross beams 1-1. The end part of the beam 1-1 is fixedly connected with the bottom of the annular track 2 through an L-shaped connecting rod 1-3, and the L-shaped connecting rod 1-3 does not obstruct the sliding of the pulley 3.
The trolley 3 comprises an L-shaped bracket 6, the horizontal part of the L-shaped bracket 6 is positioned above the circular track 2, and the vertical part of the L-shaped bracket 6 is positioned inside the circular track 2.
Horizontal rollers 7 and vertical rollers 8 are arranged on the horizontal part of the L-shaped bracket 6, and the number of the horizontal rollers 7 and the number of the vertical rollers 8 are two respectively. The two horizontal rollers 7 are arranged front and back, the two horizontal rollers 7 are symmetrical along the horizontal transmission gear 9, the horizontal rollers 7 are rotatably installed on the horizontal part of the L-shaped support 6 through vertical pin shafts 12, and the horizontal rollers 7 roll on the outer side surface of the annular boss 2-1.
A pair of ear plates 6-4 are respectively fixed on the front side and the rear side of the horizontal part of the L-shaped support 6, the vertical roller 8 is rotatably installed on the pair of ear plates 6-4 through a horizontal pin shaft 11, and avoidance grooves 6-1 matched with the vertical roller 8 are respectively arranged on the front side and the rear side of the horizontal part of the L-shaped support 6. The two vertical rollers 8 are symmetrical along the horizontal transmission gear 9, and the vertical rollers 8 roll on the upper surface of the annular track 2 on the inner side of the annular boss 2-1.
A horizontal transmission gear 9 and a sliding supporting block 10 are arranged on the vertical part of the L-shaped bracket 6. A mounting plate 13 is fixed on the vertical part of the L-shaped bracket 6, and a rotary motor 14 is vertically and fixedly mounted on the mounting plate 13. An output shaft of the rotary motor 14 is fixedly connected with a shaft center hole of the horizontal transmission gear 9, a avoidance hole 6-2 matched with the horizontal transmission gear 9 is formed in the vertical part of the L-shaped support 6, and the horizontal transmission gear 9 is meshed with the annular rack 2-2.
The vertical part of the L-shaped bracket 6 is provided with a chute 6-3 for installing the sliding support block 10. And a fastening bolt 15 is installed on the back side of the sliding groove of the L-shaped bracket 6 through threaded connection, and the inner end of the fastening bolt 15 abuts against the sliding support block 10. The sliding support block 10 is in sliding fit with the annular friction plate 2-3, and the pressure between the sliding support block 10 and the annular friction plate 2-3 is controlled by adjusting the fastening bolt 15.
The upper end of the suspension arm 4 is provided with a notch, the notch at the upper end of the suspension arm 4 is embedded at the lower end of the vertical part of the L-shaped support 6 in a matching way, and the notch at the upper end of the suspension arm 4 is fixedly connected with the vertical part of the L-shaped support 6 through a connecting bolt 16. The clamping arm 5 comprises a sleeve 5-1 fixed at the lower end of the suspension arm 4, and a diagonal brace 5-2 is connected between the sleeve 5-1 and the suspension arm 4. A sliding rod 5-5 is slidably arranged in the sleeve 5-1, and the upper side of the sleeve 5-1 is fixedly connected with an air cylinder 5-3. The cylinder 5-3 and the slide bar 5-5 are arranged in parallel, the piston rod end of the cylinder 5-3 faces to one side far away from the center of the annular track 2, and the piston rod end of the cylinder 5-3 is fixedly connected with one end of the slide bar 5-5 far away from the center of the annular track 2 through a connecting plate 5-4. One end of the sliding rod 5-5 facing the center of the annular track 2 is hinged with a clamping claw 5-7 through a hinged shaft 5-6, and the clamping claw 5-7 can horizontally rotate and cannot vertically rotate.
In this embodiment, the horizontal transmission gear 9 is driven by the rotary motor 14, and the horizontal transmission gear 9 is engaged with the annular rack 2-2 inside the annular track 2, so as to control and adjust the position of the pulley 3 on the annular track 2. 4 coasters 3 can independently adjust, and 5 positions of centre gripping arm are free nimble, through the flexible of cylinder 5-3, control centre gripping 5-7 of centre gripping arm and support on the lithium cell, and 4 centre gripping arms point to the lithium cell focus all the time, ensure that hoist and mount in-process lithium cell is steady.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (9)
1. The utility model provides a hoist is adjusted to heart to lithium cell, includes tie-beam (1), its characterized in that: an annular track (2) is fixedly connected to the lower portion of the connecting beam (1), and a plurality of pulleys (3) are mounted on the annular track (2); a suspension arm (4) is fixedly connected to the lower portion of the pulley (3), a clamping arm (5) is fixed to the lower end of the suspension arm (4), and the clamping arm (5) points to the center of the annular track (2);
the section of the annular track (2) is rectangular, an annular boss (2-1) is arranged on the upper side surface of the annular track (2), an annular friction plate (2-3) is fixed on the lower position of the inner side surface of the annular track (2), and an annular rack (2-2) is fixed on the upper position of the inner side surface of the annular track (2);
the pulley (3) comprises an L-shaped support (6), the horizontal part of the L-shaped support (6) is positioned above the annular track (2), and the vertical part of the L-shaped support (6) is positioned on the inner side of the annular track (2);
a horizontal roller (7) and a vertical roller (8) are arranged on the horizontal part of the L-shaped bracket (6); the horizontal roller (7) is in rolling fit with the outer side surface of the annular boss (2-1); the vertical roller (8) is in rolling fit with the upper surface of the annular track (2) on the inner side of the annular boss (2-1);
a horizontal transmission gear (9) and a sliding supporting block (10) are arranged on the vertical part of the L-shaped bracket (6); the horizontal transmission gear (9) is connected with a power device, and the horizontal transmission gear (9) is meshed with the annular rack (2-2); the sliding support block (10) is in sliding fit with the annular friction plate (2-3).
2. The lithium battery centering adjustment lifting appliance according to claim 1, wherein: the number of the horizontal rollers (7) and the number of the vertical rollers (8) are two; the two horizontal rollers (7) are arranged in front and back, and the two horizontal rollers (7) are symmetrical along the horizontal transmission gear (9); the two vertical rollers (8) are arranged in front and back, and the two vertical rollers (8) are symmetrical along the horizontal transmission gear (9).
3. The lithium battery centering adjustment lifting appliance according to claim 2, wherein: a pair of ear plates (6-4) are respectively fixed on the front side and the rear side of the horizontal part of the L-shaped support (6), and the vertical roller (8) is rotatably installed on the pair of ear plates (6-4) through a horizontal pin shaft (11); avoidance grooves (6-1) matched with the vertical rollers (8) are formed in the front and rear sides of the horizontal part of the L-shaped support (6); the horizontal roller (7) is rotatably arranged on the horizontal part of the L-shaped bracket (6) through a vertical pin shaft (12).
4. The lithium battery centering adjustment lifting appliance according to claim 1, wherein: a mounting plate (13) is fixed on the vertical part of the L-shaped bracket (6), and the power device comprises a rotary motor (14) which is vertically and fixedly mounted on the mounting plate (13); the output shaft of the rotary motor (14) is fixedly connected with a shaft center hole of the horizontal transmission gear (9); and the vertical part of the L-shaped bracket (6) is provided with an avoidance hole (6-2) matched with the horizontal transmission gear (9).
5. The lithium battery centering adjustment lifting appliance according to claim 1, wherein: a chute (6-3) for mounting a sliding support block (10) is formed in the vertical part of the L-shaped support (6); and a fastening bolt (15) is installed on the back side of the sliding groove of the L-shaped bracket (6) through threaded connection, and the inner end of the fastening bolt (15) abuts against the sliding support block (10).
6. The lithium battery centering adjustment lifting appliance according to claim 1, wherein: the upper end of the suspension arm (4) is provided with a notch, the notch at the upper end of the suspension arm (4) is embedded at the lower end of the vertical part of the L-shaped support (6) in a matching way, and the notch at the upper end of the suspension arm (4) is fixedly connected with the vertical part of the L-shaped support (6) through a connecting bolt (16).
7. The lithium battery centering adjustment lifting appliance according to claim 1, wherein: the clamping arm (5) comprises a sleeve (5-1) fixed at the lower end of the suspension arm (4), and an inclined stay bar (5-2) is connected between the sleeve (5-1) and the suspension arm (4); a sliding rod (5-5) is slidably mounted in the sleeve (5-1), and the upper side of the sleeve (5-1) is fixedly connected with a cylinder (5-3); the air cylinder (5-3) and the sliding rod (5-5) are arranged in parallel, the piston rod end of the air cylinder (5-3) faces to one side far away from the center of the annular track (2), and the piston rod end of the air cylinder (5-3) is fixedly connected with one end, far away from the center of the annular track (2), of the sliding rod (5-5) through a connecting plate (5-4).
8. The lithium battery centering adjustment lifting appliance according to claim 7, wherein: one end of the sliding rod (5-5) facing the center of the annular track (2) is hinged with a clamping claw (5-7) through a hinged shaft (5-6).
9. The lithium battery centering adjustment lifting appliance according to claim 1, wherein: the connecting beam (1) comprises a pair of cross beams (1-1) and a pair of longitudinal beams (1-2), and the longitudinal beams (1-2) are vertically and fixedly connected between the two cross beams (1-1); the end part of the cross beam (1-1) is fixedly connected with the bottom of the annular track (2) through an L-shaped connecting rod (1-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111583545.6A CN114229682B (en) | 2021-12-22 | 2021-12-22 | Lifting appliance for centering adjustment of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111583545.6A CN114229682B (en) | 2021-12-22 | 2021-12-22 | Lifting appliance for centering adjustment of lithium battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114229682A true CN114229682A (en) | 2022-03-25 |
| CN114229682B CN114229682B (en) | 2022-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111583545.6A Active CN114229682B (en) | 2021-12-22 | 2021-12-22 | Lifting appliance for centering adjustment of lithium battery |
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| Country | Link |
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| CN (1) | CN114229682B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115535849A (en) * | 2022-10-27 | 2022-12-30 | 山东恒安泰重型机械有限公司 | Electric single-beam crane for annular track |
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| CN107150117A (en) * | 2017-07-19 | 2017-09-12 | 安徽理工大学 | Many arm type suspended rail formula casting cleaning machine people |
| CN208413638U (en) * | 2018-04-15 | 2019-01-22 | 攸县龙昊重工有限责任公司 | One kind can accelerate Universal rotary hanging apparatus |
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2021
- 2021-12-22 CN CN202111583545.6A patent/CN114229682B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19914195A1 (en) * | 1998-03-26 | 1999-11-11 | Mannesmann Ag | Ring lift crane |
| CN2753864Y (en) * | 2004-09-13 | 2006-01-25 | 谭常蛟 | Two-leaf automatic revolution door body structure and transmission |
| CN102992191A (en) * | 2011-09-15 | 2013-03-27 | 上海科轻起重机有限公司 | Crane trolley structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115535849A (en) * | 2022-10-27 | 2022-12-30 | 山东恒安泰重型机械有限公司 | Electric single-beam crane for annular track |
| CN115535849B (en) * | 2022-10-27 | 2023-09-26 | 山东恒安泰重型机械有限公司 | Electric single-beam crane for circular track |
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| Publication number | Publication date |
|---|---|
| CN114229682B (en) | 2022-12-23 |
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