CN113336074A - Nuclear power station equipment gate hoisting accessory - Google Patents
Nuclear power station equipment gate hoisting accessory Download PDFInfo
- Publication number
- CN113336074A CN113336074A CN202110550211.2A CN202110550211A CN113336074A CN 113336074 A CN113336074 A CN 113336074A CN 202110550211 A CN202110550211 A CN 202110550211A CN 113336074 A CN113336074 A CN 113336074A
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- CN
- China
- Prior art keywords
- hoisting
- fixed
- hoisting device
- gate
- steel wire
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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.)
- Pending
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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
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
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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
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- 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
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- 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
- B66D1/14—Power transmissions between power sources and drums or barrels
- B66D1/20—Chain, belt, or friction drives, e.g. incorporating sheaves of fixed or variable ratio
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- 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
- B66D1/28—Other constructional details
- B66D1/30—Rope, cable, or chain drums or barrels
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- 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
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/48—Control devices automatic
- B66D1/50—Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Abstract
一种核电站设备闸门起吊装置，其包括：设备闸门封头，两侧设有起吊装置支撑平台，其上分别设有两端设有定滑轮的平衡装置；并联绕绳装置，设置于设备闸门封头顶部；第一、第二起吊装置，对称设置于起吊装置支撑平台上，分别包括卷筒、驱动卷筒的电机和减速器，第一起吊装置的卷筒上有两根独立的钢丝绳，一根钢丝绳一端固定在卷筒一侧，缠绕过动滑轮、平衡装置一端的定滑轮后，固定在起吊装置支撑平台上设置的起吊装置支架上；另一根钢丝绳一端固定在卷筒的另一侧，缠绕通过动滑轮、平衡装置另一端的定滑轮后，经过并联绕绳装置，与第二起吊装置相应的钢丝绳相连，缠绕过第二起吊装置的平衡装置的定滑轮、动滑轮，固定在第二起吊装置的卷筒上。
A nuclear power plant equipment gate hoisting device, comprising: equipment gate head, with lifting device support platforms on both sides, on which are respectively provided with balancing devices with fixed pulleys at both ends; a parallel rope winding device arranged on the equipment gate seal The top of the head; the first and second hoisting devices are symmetrically arranged on the supporting platform of the hoisting device, and respectively include a reel, a motor for driving the reel and a reducer, and there are two independent steel wire ropes on the reel of the first hoisting device, one One end of a steel wire rope is fixed on one side of the drum, and after winding over the moving pulley and the fixed pulley at one end of the balancing device, it is fixed on the hoisting device bracket set on the supporting platform of the hoisting device; one end of the other steel wire rope is fixed on the other side of the drum, After winding through the movable pulley and the fixed pulley at the other end of the balancing device, it is connected to the wire rope corresponding to the second hoisting device through the parallel rope winding device, and is wound through the fixed pulley and movable pulley of the balancing device of the second hoisting device, and is fixed on the second hoisting device on the roll.
Description
Technical Field
The invention belongs to the technical field of nuclear power, and particularly relates to a gate lifting device of nuclear power plant equipment.
Background
The nuclear power plant equipment gate is a gate for large equipment to enter and exit a reactor plant, and is opened during the construction, shutdown and refueling of the nuclear power plant to serve as an access passage for the large equipment (such as a steam generator and the like) in the reactor plant. During the operation of the nuclear power plant and in an accident state, the equipment gate is in a closed state and forms a third barrier together with the containment vessel of the reactor, so that radioactive substances are prevented from leaking out and the third barrier is a part of the pressure boundary of the containment vessel.
The lifting device for the nuclear power plant equipment gate has the functions of successfully lifting the gate seal head to a specified hanging high position when the equipment gate is opened and successfully landing the gate seal head to a specified position when the equipment gate needs to be closed. The lifting device for the nuclear power station equipment gate consists of a left lifting mechanism and a right lifting mechanism, and the lifting synchronism of the two lifting mechanisms has important significance for smooth opening and closing of the equipment gate. Based on the requirement of the third-generation nuclear power station on the safety and reliability of the equipment gate, the equipment gate lifting synchronizer is safe, reliable, efficient and convenient to operate, and can realize automatic lifting synchronization, and the equipment gate lifting synchronizer gradually becomes the mainstream.
In the related technology, a part of nuclear power plant equipment gate hoisting devices of the third generation nuclear power project are composed of two hoisting mechanisms, the hoisting mechanisms and the guide devices are arranged on two sides above a door opening together, and the synchronism is kept through height absolute value encoders of the hoisting mechanisms on the two sides in an electric control system, but the safety and the reliability of the hoisting mechanisms are not as good as those of a mechanical system.
In the related technology, part of nuclear power plant equipment gate hoisting devices of the third-generation nuclear power project are arranged right above a door opening, and the two hoisting mechanisms are connected by a rigid shaft so as to keep the hoisting synchronism. However, after long-time operation, the steel wire ropes of the two hoisting mechanisms are loosened unevenly, so that the lengths of the two hoisting mechanisms are different, the centering operation of the closed gate is influenced, and the risk of uneven stress on two sides exists. Therefore, the rigid shaft needs to be stopped and disassembled for adjustment, the operation and maintenance are troublesome, and the control on the opening and closing period of the gate is not facilitated.
In view of this, it is necessary to provide a safe, reliable and efficient lifting device for a nuclear power plant equipment gate.
Disclosure of Invention
The invention aims to: the defects of the prior art are overcome, and the safe, reliable and efficient nuclear power station equipment gate hoisting device is provided.
In order to achieve the above object, the present invention provides a lifting device for a nuclear power plant equipment gate, comprising:
the device comprises an equipment gate end socket, wherein hoisting device supporting platforms are arranged on two sides of the equipment gate end socket, balancing devices are respectively arranged on the hoisting device supporting platforms, and fixed pulleys are respectively arranged at two ends of each balancing device;
the parallel rope winding device is arranged at the top of the equipment gate end socket; and
the first hoisting device and the second hoisting device are symmetrically arranged on a hoisting device supporting platform and respectively comprise a winding drum, a motor for driving the winding drum to rotate and a speed reducer arranged between the winding drum and the motor, wherein the winding drum of the first hoisting device is provided with two independent steel wire ropes, one end of one steel wire rope is fixed on one side of the winding drum, and the steel wire rope is fixed on a hoisting device bracket arranged on the hoisting device supporting platform after being wound by a movable pulley and a fixed pulley at one end of a balancing device; one end of the other steel wire rope is fixed on the other side of the winding drum, is wound through the movable pulley and the fixed pulley at the other end of the balancing device, then passes through the parallel rope winding device to be connected with the steel wire rope corresponding to the second hoisting device, is wound through the fixed pulley and the movable pulley of the balancing device of the second hoisting device, and is fixed on the winding drum of the second hoisting device.
The balance device comprises a support provided with a rotating shaft, a balance beam capable of rotating relative to the rotating shaft and a weighing sensor arranged on the rotating shaft, wherein two arms of the balance beam are respectively connected with a damper and a hanging arm, and the fixed pulley is arranged at the tail end of the hanging arm.
As an improvement of the gate lifting device of the nuclear power station equipment, one end of the damper is connected to the tail end of the balance beam, and the other end of the damper is fixedly arranged on the lifting platform.
As an improvement of the gate lifting device of the nuclear power station equipment, the damper is positioned between the support and the hanging arm.
As an improvement of the gate hoisting device of the nuclear power station equipment, a brake is arranged on the winding drum.
As an improvement of the lifting device for the nuclear power station equipment gate, the movable pulley comprises a pulley shaft and two pulleys arranged on the pulley shaft through bearings, and is connected with a lifting lug arranged on an equipment gate end socket through a trunnion and an ear plate.
As an improvement of the gate hoisting device of the nuclear power station equipment, the parallel rope winding device comprises a sliding groove, a sliding shaft and a steel wire rope lock catch.
As an improvement of the gate lifting device of the nuclear power station equipment, the sliding groove is fixedly arranged on the platform.
As an improvement of the gate lifting device of the nuclear power station equipment, the steel wire ropes on the two sides are connected with the sliding shaft and are fixed through the steel wire rope lock catches.
As an improvement of the gate lifting device of the nuclear power station equipment, the first lifting device and the second lifting device are synchronously lifted through the synchronizing device and the electric control system.
Compared with the prior art, the nuclear power station equipment gate hoisting device can effectively overcome the length difference of two steel wire ropes of a unilateral hoisting device, keep the tension of the two steel wire ropes and effectively overcome the load impact generated by sudden fracture of the steel wire ropes; the parallel rope winding devices are adopted to effectively connect the steel wire ropes of the hoisting devices on the two sides, real-time load sharing is realized, and the height difference caused by hoisting on the two sides is overcome; the parallel rope winding devices can ensure that any one steel wire rope is broken, at least one steel wire rope on the two hoisting devices is effective, and the safety of the hoisting devices is improved.
Drawings
The following describes in detail the lifting device for a nuclear power plant equipment gate and its technical effects with reference to the accompanying drawings and specific embodiments, in which:
fig. 1A and 1B are a front view and a plan view of a plant gate lifting device according to the present invention.
FIG. 2 is a schematic structural diagram of a gate lifting device of nuclear power plant equipment.
Fig. 3 is a schematic structural diagram of a balancing device in the gate hoisting device of the nuclear power plant equipment.
FIG. 4 is a schematic structural diagram of a movable pulley in the lifting device of the nuclear power plant equipment gate.
FIG. 5 is a schematic structural diagram of a parallel rope winding device in the lifting device of the nuclear power plant equipment gate.
In the figure:
10, sealing the gate of the equipment; 100-a lifting device support platform; 102- -a balancing device; 104- -a support; 106- -compensating beam; 108- -axis of rotation; 110- -load cell; 112- -a damper; 114-a hanging arm; 116- -a fixed pulley; 118-a lifting lug;
20- -parallel roping; 200- -sliding groove; 202- -sliding shaft; 204-steel wire rope lock catch;
300- -a spool; 302- -an electric machine; 304-a reducer; 306- -brake; 308- -steel wire rope; 310- -a movable pulley; 312- -a pulley shaft; 314-trunnion; 316-ear plate; bearing-318.
Detailed Description
In order to make the objects, technical solutions and technical effects of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 and 2, the present invention provides a lifting device for a nuclear power plant equipment gate, including:
the two sides of the equipment gate end socket 10 are provided with lifting device supporting platforms 100, the lifting device supporting platforms 100 are respectively provided with a balancing device 102, and two ends of the balancing device 102 are respectively provided with a fixed pulley 116;
the parallel rope winding device 20 is arranged at the top of the equipment gate end socket 10; and
the first hoisting device and the second hoisting device are symmetrically arranged on the hoisting device supporting platform 100, and respectively comprise a winding drum 300, a motor 302 for driving the winding drum 300 to rotate, and a speed reducer 304 (in the embodiment shown in the figure, a brake 304 is arranged on the winding drum 300) arranged between the winding drum 300 and the motor 302, wherein the winding drum 300 of the first hoisting device is provided with two independent steel wire ropes 308, one end of one steel wire rope 308 is fixed on one side of the winding drum 300, and the steel wire rope is fixed on a hoisting device bracket (not shown) arranged on the hoisting device supporting platform 100 after being wound by a movable pulley 310 and a fixed pulley 116 at one end of a balancing device 102; one end of another steel wire rope 308 is fixed on the other side of the winding drum 300, is wound through the movable pulley 310 and the fixed pulley 116 at the other end of the balancing device 102, passes through the parallel rope winding device 20, is connected with the steel wire rope 308 corresponding to the second hoisting device, is wound through the fixed pulley 116 and the movable pulley 310 of the balancing device 102 of the second hoisting device, and is fixed on the winding drum 300 of the second hoisting device.
Although only the first hoisting device is taken as an example for description in the present specification, it can be understood that, because the first hoisting device and the second hoisting device are symmetrically arranged, the second hoisting device and the first hoisting device have substantially the same structure, and therefore, detailed description of the specific structure of the second hoisting device is omitted. That is, one end of another wire rope 308 of the first hoisting device is fixed to the other side of the winding drum 300, and after being wound through the movable pulley 310 and the fixed pulley 116 at the other end of the balancing device 102, the wire rope passes through the parallel rope winding device 20 and is connected with the wire rope 308 of the second hoisting device, which is not fixed to the hoisting device bracket.
Because the gate hoisting device of the nuclear power station equipment has the structure described in detail above, when any one steel wire rope 308 is broken, at least one steel wire rope 308 on the two hoisting devices is effective, and hoisting clamping stagnation caused by hoisting height difference can not occur on the two sides.
Referring to fig. 3, the balancing device 102 includes a support 104 having a rotating shaft 108, a balance beam 106 rotatable relative to the rotating shaft 108, and a load cell 110 disposed on the rotating shaft 108, wherein two arms of the balance beam 106 are respectively connected to a damper 112 and a hanging arm 114, and a fixed pulley 116 is disposed at a distal end of the hanging arm 114. In the embodiment shown in fig. 3, one end of the damper 112 is connected to the end of the balance beam 106, and the other end is fixedly mounted on the lifting platform, and the damper 112 is located between the support 104 and the suspension arm 114.
The balancing device 102 can effectively overcome the length difference of the two steel wire ropes 308 of the single-side hoisting device through the swinging of the balance beam 106, and the tension of the two steel wire ropes 308 is kept. When one steel wire rope 308 is broken, the damper 112 can act immediately, so that the balance beam 106 is effectively prevented from being excessively inclined, and load impact is relieved.
Referring to fig. 4, the movable pulley 310 is mainly used for connecting the steel cable 308 and a lifted item (the equipment gate end enclosure 10), and includes a pulley shaft 312 and two pulleys mounted on the pulley shaft 312 through a bearing 318, and is connected to the lifting lug 118 disposed on the equipment gate end enclosure 10 through a trunnion 314 and an ear plate 316.
Referring to fig. 5, the parallel rope winding device 20 includes a sliding slot 200, a sliding shaft 202 and a steel cable lock 204, the sliding slot 200 is fixedly installed on the platform, and the steel cables 308 at two sides are connected with the sliding shaft 202 and fixed by the steel cable lock 204. By the arrangement, the steel wire ropes 308 of the hoisting devices on the two sides can freely slide in the set range of the sliding groove 200. If the sliding range exceeds a predetermined sliding range (for example, a certain side is broken or the height difference is too large), the sliding groove 200 can play a role in limiting, so that the two sides are prevented from being excessively inclined, and the load impact is reduced.
It should be noted that, in the present invention, the first hoisting device and the second hoisting device have the same structure and configuration, and when the present invention works, the first hoisting device and the second hoisting device on both sides are ensured to be lifted synchronously by the synchronizing device and the electric control system, so as to avoid generating extra stress to the guide rail and the clamping stagnation of the lifting of the gate due to the difference of the lifting speeds on both sides.
Compared with the prior art, the nuclear power station equipment gate hoisting device can effectively overcome the length difference of two steel wire ropes of a unilateral hoisting device, keep the tension of the two steel wire ropes and effectively overcome the load impact generated by sudden fracture of the steel wire ropes; the parallel rope winding devices are adopted to effectively connect the steel wire ropes of the hoisting devices on the two sides, so that real-time load sharing is realized, and the height difference caused by hoisting on the two sides is overcome; the parallel rope winding devices can ensure that any one steel wire rope is broken, at least one steel wire rope on the two hoisting devices is effective, and the safety of the hoisting devices is improved.
The present invention can be modified and adapted appropriately from the above-described embodiments, according to the principles described above. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. A nuclear power plant equipment gate hoisting accessory, characterized by includes:
the device comprises an equipment gate end socket, wherein hoisting device supporting platforms are arranged on two sides of the equipment gate end socket, balancing devices are respectively arranged on the hoisting device supporting platforms, and fixed pulleys are respectively arranged at two ends of each balancing device;
the parallel rope winding device is arranged at the top of the equipment gate end socket; and
the first hoisting device and the second hoisting device are symmetrically arranged on a hoisting device supporting platform and respectively comprise a winding drum, a motor for driving the winding drum to rotate and a speed reducer arranged between the winding drum and the motor, wherein the winding drum of the first hoisting device is provided with two independent steel wire ropes, one end of one steel wire rope is fixed on one side of the winding drum, and the steel wire rope is fixed on a hoisting device bracket arranged on the hoisting device supporting platform after being wound by a movable pulley and a fixed pulley at one end of a balancing device; one end of the other steel wire rope is fixed on the other side of the winding drum, is wound through the movable pulley and the fixed pulley at the other end of the balancing device, then passes through the parallel rope winding device to be connected with the steel wire rope corresponding to the second hoisting device, is wound through the fixed pulley and the movable pulley of the balancing device of the second hoisting device, and is fixed on the winding drum of the second hoisting device.
2. The device for lifting a nuclear power plant equipment gate as claimed in claim 1, wherein the balance device comprises a support provided with a rotating shaft, a balance beam capable of rotating relative to the rotating shaft, and a weighing sensor arranged on the rotating shaft, wherein a damper and a hanging arm are respectively connected to two arms of the balance beam, and the fixed pulley is arranged at the tail end of the hanging arm.
3. The nuclear power plant equipment gate lifting device of claim 2, wherein one end of the damper is connected to the tail end of the balance beam, and the other end of the damper is fixedly mounted on the lifting platform.
4. The plant gate hoist of claim 3, wherein the damper is located between the pedestal and the hanger arm.
5. The nuclear power plant equipment gate hoisting device of claim 1, wherein the drum is provided with a brake.
6. The lifting device for the equipment gate of the nuclear power plant as claimed in claim 1, wherein the movable pulley comprises a pulley shaft and two pulleys mounted on the pulley shaft through bearings, and is connected with a lifting lug arranged on an end socket of the equipment gate through a trunnion and an ear plate.
7. The plant gate hoist of claim 1, wherein the parallel roping arrangement includes a slide channel, a slide shaft, and a wire rope lock.
8. The plant gate hoist apparatus of claim 7, wherein the slide channel is fixedly mounted to the platform.
9. The device for lifting a nuclear power plant equipment gate as claimed in claim 7, wherein the steel wire ropes on the two sides are connected with the sliding shaft and fixed through steel wire rope lock catches.
10. The plant gate lifting device according to any one of claims 1 to 9, wherein the first lifting device and the second lifting device are synchronously lifted by a synchronizing device and an electric control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110550211.2A CN113336074A (en) | 2021-05-20 | 2021-05-20 | Nuclear power station equipment gate hoisting accessory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110550211.2A CN113336074A (en) | 2021-05-20 | 2021-05-20 | Nuclear power station equipment gate hoisting accessory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113336074A true CN113336074A (en) | 2021-09-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110550211.2A Pending CN113336074A (en) | 2021-05-20 | 2021-05-20 | Nuclear power station equipment gate hoisting accessory |
Country Status (1)
| Country | Link |
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| CN (1) | CN113336074A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114822890B (en) * | 2022-02-28 | 2024-01-16 | 中国建筑第二工程局有限公司 | Nuclear power plant equipment gate installation method |
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| CN207259052U (en) * | 2017-08-29 | 2018-04-20 | 中国水利水电夹江水工机械有限公司 | A kind of gate is segmented headstock gear |
| CN109179247A (en) * | 2018-11-06 | 2019-01-11 | 河南卫华机械工程研究院有限公司 | The electric block of single failure protection and its disconnected rope balancing device |
| CN209721400U (en) * | 2019-01-31 | 2019-12-03 | 河南卫华重型机械股份有限公司 | A kind of breaking rope protecting lifting mechanism being arranged symmetrically |
| CN110748659A (en) * | 2019-09-27 | 2020-02-04 | 中广核工程有限公司 | A nuclear power plant equipment gate |
| CN212198133U (en) * | 2020-04-30 | 2020-12-22 | 中国水利水电夹江水工机械有限公司 | Two-layer four-rope safety manned lifting mechanism |
-
2021
- 2021-05-20 CN CN202110550211.2A patent/CN113336074A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202848895U (en) * | 2012-06-21 | 2013-04-03 | 太原重工股份有限公司 | Crane hoisting mechanism |
| CN203373049U (en) * | 2013-07-16 | 2014-01-01 | 太原重工股份有限公 | Balancing lever of double-single-connection roller hoisting mechanism |
| CN207259052U (en) * | 2017-08-29 | 2018-04-20 | 中国水利水电夹江水工机械有限公司 | A kind of gate is segmented headstock gear |
| CN109179247A (en) * | 2018-11-06 | 2019-01-11 | 河南卫华机械工程研究院有限公司 | The electric block of single failure protection and its disconnected rope balancing device |
| CN209721400U (en) * | 2019-01-31 | 2019-12-03 | 河南卫华重型机械股份有限公司 | A kind of breaking rope protecting lifting mechanism being arranged symmetrically |
| CN110748659A (en) * | 2019-09-27 | 2020-02-04 | 中广核工程有限公司 | A nuclear power plant equipment gate |
| CN212198133U (en) * | 2020-04-30 | 2020-12-22 | 中国水利水电夹江水工机械有限公司 | Two-layer four-rope safety manned lifting mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114822890B (en) * | 2022-02-28 | 2024-01-16 | 中国建筑第二工程局有限公司 | Nuclear power plant equipment gate installation method |
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Application publication date: 20210903 |
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