CN113879973A - Electric hoist for two roof beam european style cranes - Google Patents
Electric hoist for two roof beam european style cranes Download PDFInfo
- Publication number
- CN113879973A CN113879973A CN202111210646.9A CN202111210646A CN113879973A CN 113879973 A CN113879973 A CN 113879973A CN 202111210646 A CN202111210646 A CN 202111210646A CN 113879973 A CN113879973 A CN 113879973A
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- China
- Prior art keywords
- adjusting
- electric hoist
- seat
- european
- limiting
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- 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
- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 230000033228 biological regulation Effects 0.000 claims description 13
- 238000004804 winding Methods 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 3
- 235000013312 flour Nutrition 0.000 description 3
- 239000011435 rock Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 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
- 230000008569 process Effects 0.000 description 1
Images
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
- 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
- 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
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/14—Slings with hooks
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses an electric hoist for a double-beam European crane, which belongs to the technical field of cranes and comprises an electric appliance box, a lifting motor and a gearbox, wherein a connecting column is connected below the electric appliance box, the lower end of the connecting column is connected with a lifting hook, a plurality of limiting mechanisms are fixedly arranged on the outer surface of the connecting column, each limiting mechanism comprises a limiting seat and a fixing plate, adjusting mechanisms are fixedly arranged on the outer surfaces of the lifting motor and the gearbox, each adjusting mechanism comprises an adjusting seat and a supporting plate, an adjusting rope is connected between each limiting mechanism and each adjusting mechanism, and the limiting mechanisms are matched with the adjusting mechanisms and the adjusting ropes to limit the position of the connecting column from the left direction and the right direction and are used for improving the stability of the connecting column in operation; the invention is used for solving the technical problem that the electric hoist has poor operation efficiency due to poor stability when the lifting hook lifts objects in the existing scheme.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to an electric hoist for a double-beam European crane.
Background
The electric hoist is a special lifting device and is arranged on a crown block and a gantry crane, and the electric hoist has the characteristics of small volume, light dead weight, simple operation, convenient use and the like.
The invention patent of publication number CN113162303A discloses a multifunctional electric hoist, which comprises a multifunctional electric hoist body consisting of a hoisting mechanism, a reduction gearbox, a hook component and a switch controller, wherein the left side of the hoisting mechanism is fixedly connected with the right side of the reduction gearbox, the top of the hook component is fixedly connected with the outer side of the reduction gearbox through a rotating seat, the switch controller is positioned at the front side of the reduction gearbox, the hoisting mechanism comprises a heat dissipation shell, and the invention relates to the technical field of electric hoists. In some flour processing factory, because flour flies upward along with the air, get into the jack-up motor very easily, the jack-up motor body will produce a large amount of heats in the course of the work, and during flour got into the louvre, influence jack-up motor's radiating effect, reduce jack-up engine life, under the serious condition, lead to the jack-up engine to flame out automatically, have the potential safety hazard, these problems can be solved to this multi-functional electric block.
But have drawbacks including: when article are hoisted through a lifting hook on the electric hoist, the article are easily shaken left and right in the lifting process under the influence of the weight of the article, so that the operation efficiency of the electric hoist is influenced.
Disclosure of Invention
The invention aims to provide an electric hoist for a double-beam European crane, which solves the following technical problems: how to solve stability when lifting hook hoist and mount article among the current scheme is not good, lead to the not good technical problem of electric block operating efficiency.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides an electric block for two roof beam european style cranes, including the electrical apparatus case, play to rise motor and gearbox, the below of electrical apparatus case is connected with the spliced pole, the lower extreme of spliced pole is connected with the lifting hook, the fixed surface of spliced pole installs a plurality of stop gear, stop gear contains spacing seat and fixed plate, one side of fixed plate is provided with a plurality of spacing groove, the equal fixed mounting in surface that plays to rise motor and gearbox has adjustment mechanism, adjustment mechanism contains regulation seat and backup pad, be connected with the regulation rope between stop gear and the adjustment mechanism, stop gear cooperation adjustment mechanism and regulation rope are injectd the position of spliced pole from the direction of controlling, a stability when being used for improving the spliced pole operation.
The invention has further technical improvements that: spacing seat and fixed plate all are the arcuation, and a plurality of spacing groove is used for spacing to the regulation rope of connecting, avoids adjusting the rope during operation and slides on the fixed plate, influences the operation of lifting hook, adjusts the surface and the spacing groove looks butt of rope, adjusts the surface of rope and contacts with the lower surface of second runner earlier, then contacts with the side surface of first runner, and first runner plays the effect of accomodating the regulation rope, and the second runner plays the effect of transmission and buffering regulation rope.
The invention has further technical improvements that: one side of adjusting the seat is provided with accomodates the groove, adjusts one side of seat and still installs first runner, adjusts the lower extreme of seat and installs the connecting plate, and the second runner is installed to the lower extreme of connecting plate.
The invention has further technical improvements that: the upper end of the electrical appliance box is provided with a plurality of sports car assemblies, the lower end of the electrical appliance box is provided with a winding drum, and the connecting column is connected with the winding drum through a plurality of steel wire ropes.
The invention has further technical improvements that: the rear surface of adjusting the seat and the upper surface of backup pad all are provided with the recess, and this recess makes more firm that adjustment mechanism and play to rise motor and gearbox are connected.
The invention has further technical improvements that: the plurality of limiting mechanisms are symmetrically arranged and distributed on the connecting column, and the plurality of adjusting mechanisms are symmetrically arranged and distributed on two sides of the electric appliance box.
The invention has further technical improvements that: install first rotary column between first runner and the regulation seat, install the second rotary column between second runner and the connecting plate, install the driving motor who is used for driving first rotary column and rotates in the regulation seat, driving motor is used for driving first rotary column and second rotary column and rotates, through the rotation of first rotary column and second rotary column for play to rise the first runner rotation on motor and the gearbox, will adjust the rope through the rotation of first runner and accomodate or release.
Compared with the prior art, the invention has the beneficial effects that:
install the adjustment mechanism who plays to rise on motor and the gearbox, can cooperate stop gear to adjust the rope and carry out rolling and release, can follow left right direction through adjusting the rope and prescribe a limit to the position of spliced pole, stability when can improving the spliced pole operation, and then can make the lifting hook difficult to take place to rock when hoist and mount article, a plurality of spacing groove of setting carries on spacingly to the regulation rope of connecting, the operation of influence lifting hook is slided on the fixed plate to the during operation of avoiding adjusting the rope, the second runner plays the effect of transmission and buffering regulation rope, the efficiency of adjusting rope rolling and release has been improved.
Drawings
The invention will be further described with reference to the accompanying drawings.
Fig. 1 is a front view of an electric hoist for a double-beam european crane according to the present invention.
Fig. 2 is a perspective view of the limiting mechanism of the present invention.
Fig. 3 is a perspective view of an adjustment mechanism of the present invention.
Fig. 4 is a side view of the adjustment mechanism of the present invention.
In the figure: 1. an electrical box; 2. a reel; 3. a hoisting motor; 4. a gearbox; 5. a sports car assembly; 6. connecting columns; 7. a hook; 8. a limiting mechanism; 801. a limiting seat; 802. a fixing plate; 803. a limiting groove; 9. an adjustment mechanism; 901. an adjusting seat; 902. a support plate; 903. a first runner; 904. a connecting plate; 905. a second runner; 10. and (6) adjusting the ropes.
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.
Referring to fig. 1, the invention is an electric hoist for a dual-beam european crane, comprising an electric appliance box 1, a lifting motor 3 and a gearbox 4, wherein the lifting motor 3 and the gearbox 4 are fixedly arranged at two sides of the electric appliance box 1, a connecting column 6 is connected below the electric appliance box 1, a plurality of limiting mechanisms 8 are fixedly arranged on the outer surface of the connecting column 6, the plurality of limiting mechanisms 8 are symmetrically arranged and distributed on the connecting column 6, adjusting mechanisms 9 are fixedly arranged on the outer surfaces of the lifting motor 3 and the gearbox 4, the plurality of adjusting mechanisms 9 are symmetrically arranged and distributed at two sides of the electric appliance box 1, a plurality of carriage assemblies 5 are arranged at the upper end of the electric appliance box 1, a winding drum 2 is arranged at the lower end of the electric appliance box 1, the connecting column 6 is connected with the winding drum 2 through a plurality of steel wire ropes, a lifting hook 7 is connected at the lower end of the connecting column 6, an adjusting rope 10 is connected between the limiting mechanism 8 and the adjusting mechanisms 9, two shapes of adjusting rope 10 and electrical apparatus case 1, lifting motor 3 and gearbox 4 besieged city are the triangle-shaped, and stop gear 8 cooperation adjustment mechanism 9 and regulation rope 10 are injectd the position of spliced pole 6 from left right direction for stability when improving spliced pole 6 operation.
Referring to fig. 2, the limiting mechanism 8 includes a limiting seat 801 and a fixing plate 802, the fixing plate 802 is fixedly installed at a side position inside the limiting seat 801, one side of the fixing plate 802 away from the connecting column 6 is provided with a plurality of limiting grooves 803, the number of the limiting grooves 803 may be two, the limiting seat 801 and the fixing plate 802 are both arc-shaped, the plurality of limiting grooves 803 are used for limiting the connected adjusting rope 10, the adjusting rope 10 is prevented from sliding on the fixing plate 802 during operation to affect the operation of the lifting hook 7, and the outer surface of the adjusting rope 10 is abutted to the limiting grooves 803.
Referring to fig. 3-4, the adjusting mechanism 9 includes an adjusting seat 901 and a supporting plate 902, a groove is disposed on a rear surface of the adjusting seat 901 and an upper surface of the supporting plate 902, the groove makes the adjusting mechanism 9 more stably connected to the hoisting motor 3 and the transmission case 4, a receiving groove is disposed on one side of the adjusting seat 901 for the first rotating wheel 903 to rotate, a first rotating wheel 903 is further disposed on one side of the adjusting seat 901, a connecting plate 904 is disposed on a lower end of the adjusting seat 901, a second rotating wheel 905 is disposed on a lower end of the connecting plate 904, a first rotating column is disposed between the first rotating wheel 903 and the adjusting seat 901, the first rotating column is used for rotating the first rotating wheel 903, a second rotating column is disposed between the second rotating wheel 905 and the connecting plate 904, the second rotating column is used for rotating the second rotating wheel 905, an outer surface of the adjusting rope 10 contacts with a lower surface of the second rotating wheel 905 and then contacts with a side surface of the first rotating wheel 903, the first rotating wheel 903 plays a role in accommodating the adjusting rope 10, the second rotating wheel 905 plays a role in transmitting and buffering the adjusting rope 10, and a driving motor for driving the first rotating wheel 903 to rotate is installed in the adjusting seat 901.
The goods are hoisted by the electric hoist, the goods are 1t, after the goods are connected to the lifting hook 7, the hoisting motor 3 is started to drive the winding drum 2 to rotate anticlockwise, the steel wire rope is wound by driving the winding drum 2 to rotate, articles are lifted by winding the steel wire rope, the hoisted articles can shake when the winding speed of the steel wire rope is high in the prior art, certain potential safety hazards exist, when the winding speed is slow, the operation efficiency of the whole crane is influenced, the adjusting rope 10 is wound through the adjusting mechanisms 9 arranged on the lifting motor 3 and the gear box 4 and matched with the limiting mechanisms 8 on the left side surface and the right side surface of the connecting column 6, make the regulation rope 10 stretch the both sides of spliced pole 6 for keep balance when spliced pole 6 rises and do not take place to rock, stability when effectively having improved lifting hook 7 hoist and mount article, and then improved electric block's operating efficiency.
The working principle of the invention is as follows: when the device works, the hoisting motor 3 drives the winding drum 2 to rotate, the steel wire rope is wound or released through the rotation of the winding drum 2, so that the steel wire rope drives the connecting column 6 to ascend or descend, the adjusting mechanism 9 on the hoisting motor 3 and the limiting mechanism 8 on the left side surface of the connecting column 6 form a first stabilizing module, the adjusting mechanism 9 on the gearbox 4 and the limiting mechanism 8 on the right side surface of the connecting column 6 form a second stabilizing module, one end of the adjusting rope 10 is embedded into the adjusting seat 901, the other end of the adjusting rope 10 is fixedly connected with the first rotating wheel 903, the adjusting rope 10 passes through the limiting mechanism 8 and contacts with the limiting groove 803 on the fixing plate 802, the adjusting rope 10 also contacts with the lower surface of the second rotating wheel 905 and the side surface of the first rotating wheel 903, the driving motor in the adjusting seat 901 is used for driving the first rotating column and the second rotating column to rotate, and through the rotation of the first rotating column and the second rotating column, make first runner 903 on lifting motor 3 and the gearbox 4 rotate, rotation through first runner 903 will adjust rope 10 and accomodate or release, make lifting hook 7 rise or remain stable when descending, first runner 903 on lifting motor 3 and the gearbox 4 keeps the same speed to rotate, adjust the state that rope 10 keeps tight always, make lifting hook 7 keep balanced state, do not incline to left side or right side emergence, the speed when the speed of receiving and releasing of adjusting rope 10 rises or descends according to lifting hook 7 sets for.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, 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; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (8)
1. The utility model provides an electric block for two roof beam european style cranes, including electrical apparatus case (1), play to rise motor (3) and gearbox (4), the below of electrical apparatus case (1) is connected with spliced pole (6), a serial communication port, the fixed surface of spliced pole (6) installs a plurality of stop gear (8), stop gear (8) contain spacing seat (801) and fixed plate (802), one side that fixed plate (802) are close to spliced pole (6) is provided with a plurality of spacing groove (803), the equal fixed mounting in surface of playing to rise motor (3) and gearbox (4) has adjustment mechanism (9), adjustment mechanism (9) contain regulation seat (901) and backup pad (902).
2. The electric hoist for the European-style double-beam crane according to claim 1, wherein the limiting seat (801) and the fixing plate (802) are arc-shaped, and one side of the adjusting seat (901) is provided with a receiving groove.
3. The electric hoist for the European-style double-beam crane according to claim 2, wherein a first rotating wheel (903) is further installed on one side of the adjusting seat (901), a connecting plate (904) is installed at the lower end of the adjusting seat (901), and a second rotating wheel (905) is installed at the lower end of the connecting plate (904).
4. The electric hoist for the European-style double-beam crane according to claim 3, wherein the upper end of the electric box (1) is provided with a plurality of carriage assemblies (5), the lower end of the electric box (1) is provided with the winding drum (2), and the connecting column (6) is connected with the winding drum (2) through a plurality of steel wire ropes.
5. The electric hoist for the European-style double-beam crane according to claim 4, characterized in that the lower end of the connecting column (6) is connected with a lifting hook (7), and an adjusting rope (10) is connected between the limiting mechanism (8) and the adjusting mechanism (9).
6. The electric hoist for the double-beam European crane according to claim 5, wherein the rear surface of the adjusting seat (901) and the upper surface of the supporting plate (902) are provided with grooves.
7. The electric hoist for the European-style double-beam crane according to claim 6, wherein the plurality of limiting mechanisms (8) are symmetrically arranged on the connecting column (6).
8. The electric hoist for the double-beam European crane according to claim 7, characterized in that a first rotating column is installed between the first rotating wheel (903) and the adjusting seat (901), a second rotating column is installed between the second rotating wheel (905) and the connecting plate (904), and a driving motor for driving the first rotating wheel (903) to rotate is installed in the adjusting seat (901).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111210646.9A CN113879973A (en) | 2021-10-18 | 2021-10-18 | Electric hoist for two roof beam european style cranes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111210646.9A CN113879973A (en) | 2021-10-18 | 2021-10-18 | Electric hoist for two roof beam european style cranes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113879973A true CN113879973A (en) | 2022-01-04 |
Family
ID=79003431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111210646.9A Pending CN113879973A (en) | 2021-10-18 | 2021-10-18 | Electric hoist for two roof beam european style cranes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113879973A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117142343A (en) * | 2023-10-30 | 2023-12-01 | 河南省华中起重机集团有限公司 | Electric hoist of European crane |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU235947A1 (en) * | И. П. Кривцов , А. Н. Селезнев | CARGO SUSPENSION | ||
| JP2004035171A (en) * | 2002-07-02 | 2004-02-05 | Ishikawajima Transport Machinery Co Ltd | Trolley crane and operating method for the same |
| CN106348195A (en) * | 2016-10-20 | 2017-01-25 | 钟立朋 | Electric host |
| CN205973420U (en) * | 2016-08-30 | 2017-02-22 | 中国化学工程第七建设有限公司 | Equipment lug structure |
| CN107902563A (en) * | 2017-12-25 | 2018-04-13 | 浙江邦博机械有限公司 | A kind of grab bucket crane |
| CN207877116U (en) * | 2017-12-29 | 2018-09-18 | 无锡市内河装卸机械有限公司 | A kind of clamping device for electric rubber-tyred crane |
| CN212101721U (en) * | 2020-05-12 | 2020-12-08 | 河南省重业起重机有限公司 | Hook bridge type metallurgical crane |
-
2021
- 2021-10-18 CN CN202111210646.9A patent/CN113879973A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU235947A1 (en) * | И. П. Кривцов , А. Н. Селезнев | CARGO SUSPENSION | ||
| JP2004035171A (en) * | 2002-07-02 | 2004-02-05 | Ishikawajima Transport Machinery Co Ltd | Trolley crane and operating method for the same |
| CN205973420U (en) * | 2016-08-30 | 2017-02-22 | 中国化学工程第七建设有限公司 | Equipment lug structure |
| CN106348195A (en) * | 2016-10-20 | 2017-01-25 | 钟立朋 | Electric host |
| CN107902563A (en) * | 2017-12-25 | 2018-04-13 | 浙江邦博机械有限公司 | A kind of grab bucket crane |
| CN207877116U (en) * | 2017-12-29 | 2018-09-18 | 无锡市内河装卸机械有限公司 | A kind of clamping device for electric rubber-tyred crane |
| CN212101721U (en) * | 2020-05-12 | 2020-12-08 | 河南省重业起重机有限公司 | Hook bridge type metallurgical crane |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117142343A (en) * | 2023-10-30 | 2023-12-01 | 河南省华中起重机集团有限公司 | Electric hoist of European crane |
| CN117142343B (en) * | 2023-10-30 | 2024-01-05 | 河南省华中起重机集团有限公司 | Electric hoist of European crane |
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