CN213679570U

CN213679570U - Special hoist engine of sodium pump dismouting

Info

Publication number: CN213679570U
Application number: CN202121005329.9U
Authority: CN
Inventors: 曾光明; 杨海军; 于海洋; 滑鑫; 冯军; 杨少勇
Original assignee: Henan Weihua Heavy Machinery Co Ltd
Current assignee: Henan Weihua Heavy Machinery Co Ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2021-07-13
Anticipated expiration: 2031-05-12

Abstract

A special winch for sodium pump disassembly and assembly relates to the technical field of sodium pump disassembly and assembly of nuclear power plants, and comprises a rack, wherein a plurality of supporting legs are arranged on the lower surface of the rack; a bidirectional output shaft motor is installed in the center of the upper surface of the rack, two winding drums are respectively arranged outside two sides of the bidirectional output shaft motor, two speed reducers are respectively arranged outside two ends of the bidirectional output shaft motor, high-speed shafts of the two speed reducers are respectively correspondingly connected with two output shafts of the bidirectional output shaft motor, and low-speed shafts of the two speed reducers are respectively correspondingly connected with the two winding drums; two balance arms are respectively arranged on the outer sides of the two winding drums, two fixed pulleys are respectively arranged between each balance arm and the corresponding winding drum, four movable pulleys are correspondingly arranged below the four fixed pulleys, two winding ropes are respectively wound on the two half drum bodies of the winding drum, and the outer ends of the two winding ropes are respectively wound and fixed at the two ends of the corresponding balance arms after bypassing the movable pulleys and the fixed pulleys on the corresponding sides; the winch can utilize the limited space to safely, accurately and stably hoist the sodium pump.

Description

Special hoist engine of sodium pump dismouting

Technical Field

The utility model belongs to the technical field of nuclear power plant's sodium pump dismouting technique and specifically relates to a special hoist engine of sodium pump dismouting is related to.

Background

Because the space of a sodium pump installation well is narrow, the sodium pump is disassembled and assembled by depending on the single-hook hoisting of a crane in the past, but the position of the sodium pump is unstable when the single-hook hoisting is carried out, so that the danger of collision with the well wall is easy to occur, the safety of the single-hook is not high, and the sodium pump can fall off to cause safety accidents in case of rope breakage; therefore, a lifting device which can adapt to the installation space of the sodium pump and can stably and safely lift is needed.

Disclosure of Invention

In order to overcome the not enough among the background art, the utility model discloses a special hoist engine of sodium pump dismouting can utilize limited space, carries out safe, accurate, steady lifting by crane to the sodium pump.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a special winch for sodium pump disassembly and assembly comprises a rack arranged above a wellhead of a sodium pump installation well, wherein a plurality of supporting legs are symmetrically arranged on the outer edge of the lower surface of the rack, and the supporting legs are connected with a weighing sensor; a bidirectional output shaft motor is installed in the center of the upper surface of the rack, two winding drums which are coaxial with the bidirectional output shaft motor are respectively arranged outside two sides of the bidirectional output shaft motor, two speed reducers are respectively arranged outside two ends of the bidirectional output shaft motor, one ends of high-speed shafts of the two speed reducers are respectively in transmission connection with the ends of the two output shafts of the bidirectional output shaft motor in a corresponding mode, the other ends of the high-speed shafts of the two speed reducers are respectively connected with two brakes, and low-speed shafts of the two speed reducers are respectively in transmission connection with rotating shafts of the; the outside of two reels is equipped with two balance arms of installing in the frame respectively, all is equipped with two fixed pulleys with the reel is with the axial between every balance arm and the corresponding reel, and four fixed pulley below correspondences are equipped with four movable pulleys, the movable pulley is connected with the hoist, two halves stack shell of reel is the syntropy winding respectively has two sets of serving, and the outer end of two sets of serving is walked around respectively behind movable pulley and the fixed pulley that the corresponding side corresponds, and the both ends that are fixed in corresponding balance arm are twined respectively to the subdividing.

Further, the frame is set to be a round frame larger than the wellhead of the sodium pump installation well.

Furthermore, the supporting legs are provided with four.

Further, two speed reducers and two winding drums are installed on the upper surface of the rack in a rotational symmetry mode.

Further, the bidirectional output shaft motor is an explosion-proof motor.

Further, a rotary limit switch is mounted at the end of the winding drum.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:

the utility model discloses a special winch for sodium pump disassembly and assembly, which has the advantages of ingenious design and compact structure, and can be arranged by utilizing the limited space of a well head to the maximum extent; two reel actions are controlled through a bidirectional output shaft motor, the synchronism and the stability of lifting are guaranteed, four sets of winding ropes are respectively fixed on two balance arms, the stability of lifting is improved, a sodium pump is prevented from colliding with a well wall, and the winding mode of the winding ropes can ensure that all other hoisting points can still guarantee safe lifting under the accident that one winding rope is broken, so that the load of operation can not fall off, and the safety of lifting is greatly improved.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is a partial schematic view of the bottom structure of FIG. 1;

FIG. 3 is a partial schematic view of the left side view structure of FIG. 2;

fig. 4 is a schematic view of the working state of the present invention.

In the figure: 1. a frame; 2. a reel; 3. a fixed pulley; 4. a balance arm; 5. a bidirectional output shaft motor; 6. rope rolling; 7. a speed reducer; 8. a brake; 9. a rotary limit switch; 10. supporting legs; 11. a weighing sensor; 12. a movable pulley; 13. a hanger.

Detailed Description

The present invention can be explained in detail by the following embodiments, and the purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention, and the present invention is not limited to the following embodiments; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc., it is only corresponding to the drawings of the present application, and for the convenience of describing the present invention, it is not intended to indicate or imply that the device or element referred to must have a particular orientation:

the special winch for sodium pump disassembly and assembly shown in the attached drawings 1-4 comprises a rack 1 arranged above a wellhead of a sodium pump installation well, wherein the rack 1 is a circular rack which is larger than the wellhead of the sodium pump installation well according to needs, so that the rack is ensured to have enough structural strength; the outer edge of the lower surface of the rack 1 is symmetrically provided with a plurality of supporting legs 10, so that the supporting is stable, and four supporting legs 10 are arranged as required; supporting legs 10 are connected with weighing sensor 11, promote weight display accuracy: +/-100 kg, measuring the hoisting weight by using the weighing sensor 11 to prevent overweight hoisting;

two-way output shaft motor 5 is installed to the upper surface central authorities of frame 1, and as required, two-way output shaft motor 5 establishes to explosion-proof machine, motor explosion-proof grade: ExdIICT4, so that the safety and reliability of the motor are guaranteed; two winding drums 2 which are coaxial with the bidirectional output shaft motor 5 are respectively arranged outside two sides of the bidirectional output shaft motor 5, two speed reducers 7 are respectively arranged outside two ends of the bidirectional output shaft motor 5, the two speed reducers 7 and the two winding drums 2 are rotationally and symmetrically arranged on the upper surface of the rack 1 according to requirements, and the mechanism arranged on the rack 1 is more compact and occupies less space through reasonable layout; one end of a high-speed shaft of each of the two speed reducers 7 is correspondingly and drivingly connected with the ends of two output shafts of the two-way output shaft motor 5, the other ends of the high-speed shafts of the two speed reducers 7 are respectively and drivingly connected with the two brakes 8, low-speed shafts of the two speed reducers 7 are correspondingly and drivingly connected with rotating shafts of the two winding drums 2, and the two winding drums 2 are controlled to act by the two-way output shaft motor 5, so that the synchronism and the stability of lifting are ensured, the lifting speed can be controlled to be not more than 0.1m/min at low speed and not more than 0.; the brake 8 has a manual release function as required, and the winch can confirm that the load is manually released to a safe position under the condition of power loss; in addition, the end of the winding drum 2 is provided with a rotary limit switch 9, so that the purpose of automatic power failure at the highest point and the lowest point can be achieved, and meanwhile, a mechanical anti-top fire-breaking limit switch is arranged, so that the double-insurance effect is achieved;

two balance arms 4 arranged on the frame 1 are respectively arranged at the outer sides of the two winding drums 2, two fixed pulleys 3 which are coaxial with the winding drums 2 are respectively arranged between each balance arm 4 and the corresponding winding drum 2, four movable pulleys 12 are correspondingly arranged below the four fixed pulleys 3, the movable pulleys 12 are connected with a lifting appliance 13, two half drum bodies of the winding drums 2 are respectively wound with two groups of winding ropes 6 in the same direction, the winding ropes 6 are generally set as steel wire ropes, the outer ends of the two groups of winding ropes 6 are respectively wound around the corresponding movable pulleys 12 and the corresponding fixed pulleys 3 at the corresponding sides and then are respectively wound and fixed at two ends of the corresponding balance arms 4, four groups of winding ropes 6 are respectively fixed on the two balance arms 4, thereby not only improving the stability of lifting and preventing a sodium pump from colliding with a well wall, but also ensuring that under the accident of breakage of one winding rope, other lifting points can still ensure safe lifting so as to ensure that the load of operation can not fall, the lifting safety is greatly improved.

The special winch for sodium pump disassembly and assembly drives the speed reducer 7 to wind the winding drum 2 or put down the winding rope 6 by driving the bidirectional output shaft motor 5 to rotate forward and backward, one end of the winding rope 6 is fixed on the wedge-shaped fixed end of the balance arm 4 by winding the movable pulley 12 and the fixed pulley 3, the movable pulley 12 is driven to move up and down by winding and unwinding the winding rope 6, and the sodium pump is driven to move vertically by the lifting appliance 13; when the power is switched on, the bidirectional output shaft motor 5 starts to operate, the brake 8 opens the internal contracting brake to enable each mechanism to work normally, and when the power is switched off, the bidirectional output shaft motor 5 stops operating, the brake 8 closes the internal contracting brake to enable the mechanisms to stop working.

The part of the utility model not detailed is prior art.

Claims

1. The utility model provides a special hoist engine of sodium pump dismouting which characterized in that: the device comprises a rack (1) arranged above a wellhead of a sodium pump installation well, wherein a plurality of supporting legs (10) are symmetrically arranged on the outer edge of the lower surface of the rack (1), and the supporting legs (10) are connected with a weighing sensor (11); a bidirectional output shaft motor (5) is installed in the center of the upper surface of the rack (1), two winding drums (2) which are coaxial with the bidirectional output shaft motor (5) are respectively arranged outside two sides of the bidirectional output shaft motor (5), two speed reducers (7) are respectively arranged outside two ends of the bidirectional output shaft motor (5), one ends of high speed shafts of the two speed reducers (7) are respectively in corresponding transmission connection with two output shaft ends of the bidirectional output shaft motor (5), the other ends of the high speed shafts of the two speed reducers (7) are respectively connected with two brakes (8), and low speed shafts of the two speed reducers (7) are respectively in corresponding transmission connection with rotating shafts of the two winding drums (2); the outside of two reel (2) is equipped with two balance arm (4) of installing in frame (1) respectively, all is equipped with between every balance arm (4) and corresponding reel (2) two fixed pulley (3) with the axial with reel (2), and four fixed pulley (3) below correspondence are equipped with four movable pulley (12), movable pulley (12) are connected with hoist (13), two halves stack shell of reel (2) are the syntropy winding respectively has two sets of serving rope (6), and the outer end of two sets of serving rope (6) is walked around respectively behind movable pulley (12) and the fixed pulley (3) that the corresponding side corresponds, and the both ends in corresponding balance arm (4) are fixed in the winding respectively to the subdividing.

2. The special winch for sodium pump disassembly and assembly as claimed in claim 1, wherein: the frame (1) is a circular frame which is larger than the wellhead of the sodium pump installation well.

3. The special winch for sodium pump disassembly and assembly as claimed in claim 1, wherein: four supporting legs (10) are provided.

4. The special winch for sodium pump disassembly and assembly as claimed in claim 1, wherein: two speed reducers (7) and two winding drums (2) are arranged on the upper surface of the rack (1) in a rotational symmetry manner.

5. The special winch for sodium pump disassembly and assembly as claimed in claim 1, wherein: the bidirectional output shaft motor (5) is an explosion-proof motor.

6. The special winch for sodium pump disassembly and assembly as claimed in claim 1, wherein: the end part of the winding drum (2) is provided with a rotary limit switch (9).