CN215516331U

CN215516331U - Three hoisting point self-balancing and load self-distribution special lifting appliance

Info

Publication number: CN215516331U
Application number: CN202122453353.5U
Authority: CN
Inventors: 刘永刚; 韩宇洁; 刘峰; 邵松涛
Original assignee: Henan Weihua Heavy Machinery Co Ltd
Current assignee: Henan Weihua Heavy Machinery Co Ltd
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2022-01-14
Anticipated expiration: 2031-10-12

Abstract

A three-lifting-point self-balancing and load self-distributing special lifting appliance is characterized in that a lifting appliance main body is a carrier beam, and two sides of the carrier beam are connected with lifting hanging points and a crane lifting hook by using four symmetrical heavy-load rope rings; middle fixed pulleys are symmetrically arranged on two sides of the middle part of the carrier beam, and a middle movable pulley and a middle flange connecting piece are arranged below the middle fixed pulleys; similarly, end fixed pulleys are symmetrically arranged on two sides of two ends of the carrier beam, an end movable pulley and an end flange connecting piece are arranged below each end fixed pulley, and the end flange connecting piece on each side bears the corresponding end movable pulley and the electric telescopic mechanism; two sides of the carrier beam are respectively wound by one steel wire rope to form two sets of pulley steel wire rope systems. According to the utility model, the heavy-duty bearing beam and the pressure vessel are flexibly connected through the pulley steel wire rope system, so that the processing error of the height of the pressure vessel mounting flange is compensated, and the extra load borne by the transverse connecting pipeline between the main tank body and the auxiliary tank body of the pressure vessel is reduced.

Description

Three hoisting point self-balancing and load self-distribution special lifting appliance

Technical Field

The utility model belongs to a lifting appliance tool, and particularly relates to a special lifting appliance for three-lifting-point lifting applied to a nuclear power heavy pressure container.

Background

A lifting point of a nuclear power certain heavy pressure container is arranged on three mounting flanges during lifting, the pressure container is structurally a plurality of cylindrical tank bodies and is divided into a main tank body and a plurality of auxiliary tank bodies, the tank bodies are connected into a whole through a middle transverse connecting pipeline, the main tank body is connected with the main tank body through a middle flange of the three flanges serving as the lifting point, and the main tank body is connected with the auxiliary tank bodies connected with the other two lifting flanges through the middle transverse connecting pipeline. When hoisting, the stress of the middle transverse connecting pipeline is required to be as small as possible, so that the stress of flanges at each hoisting point is required to be as balanced as possible, the special hoisting tool must have self-balancing and load self-distribution capabilities, and meanwhile, the height size of the flanges at the hoisting points in the machining process has deviation due to the huge appearance of the heavy pressure vessel, so that the special hoisting tool is required to have a height compensation function. The installation of the heavy pressure container requires higher installation accuracy, and after the heavy pressure container is hoisted in place, the posture is required to be finely adjusted according to the field installation condition.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: aiming at the three-lifting-point multi-tank combined pressure vessel, how to ensure the installation precision in the installation process and the balanced stress of flanges at each lifting point, the three-lifting-point self-balancing and load self-distribution special lifting appliance is provided.

The technical scheme of the utility model is as follows:

a three-lifting-point self-balancing and load self-distributing special lifting appliance is characterized in that a lifting appliance main body is a carrier beam, four lifting hanging points are designed on two sides of the carrier beam, and four symmetrical heavy-load rope rings are used for connecting the lifting hanging points with a crane lifting hook; middle fixed pulleys are symmetrically arranged on two sides of the middle part of the bearing beam, a middle movable pulley and a middle flange connecting piece are arranged below the middle fixed pulleys, and the middle flange connecting piece bears all the middle movable pulleys; similarly, end fixed pulleys are symmetrically arranged on two sides of two ends of the carrier beam, an end movable pulley and an end flange connecting piece are arranged below each end fixed pulley, and the end flange connecting piece on each side bears the corresponding end movable pulley and the electric telescopic mechanism; two sides of the carrier beam are respectively wound by a steel wire rope, the steel wire rope is sequentially wound by an electric telescopic mechanism, an end fixed pulley and an end movable pulley at one end, then wound out from the end fixed pulley at one end and enters a middle fixed pulley and a middle movable pulley, then wound out from the middle fixed pulley and enters an end fixed pulley at the other end and an end movable pulley at the other end, and finally wound on the electric telescopic mechanism at the other end through the end fixed pulley, so that two pulley steel wire rope systems are formed.

Eight middle fixed pulleys are symmetrically arranged on two sides of the middle part of the carrier beam, namely four middle fixed pulleys are respectively arranged on each side of the middle part, and three middle movable pulleys are arranged below the four middle fixed pulleys; two sides of two end parts of the bearing beam are respectively provided with six end part fixed pulleys, namely, each side of the end part is respectively provided with three end part fixed pulleys, and two end part movable pulleys are arranged below the three end part fixed pulleys on each side.

An angle sensor is arranged on the middle flange connecting piece, and pin shaft type weight sensors are arranged on all the movable pulleys; an electronic screen is arranged above the bearing beam, and an angle sensor and a pin shaft type weight sensor are connected with the electronic screen.

Compared with the prior art, the utility model has the following technical effects: firstly, the heavy load-bearing beam is flexibly connected with the pressure container through a pulley steel wire rope system, so that the processing error of the height of a mounting flange of the pressure container is compensated, and the extra load borne by a transverse connecting pipeline between a main tank body and an auxiliary tank body of the pressure container is reduced; secondly, by setting the proportion of the movable pulleys on each flange connecting piece, the load borne by the three flanges during the hoisting of the pressure container is accurately self-distributed according to the proportion of 5:6: 5: for a single-set pulley steel wire rope system, the ratio of the movable pulleys on the flange connecting pieces is set to be 2:3:2, the ratio of the movable pulleys on the flange connecting pieces of the two sets of pulley steel wire rope systems is set to be 4:6:4, during fine adjustment, the end part of each set of pulley steel wire rope system stretches, so that the load of one movable pulley is arranged at each of the two ends of the system, and the load borne by the three flanges is subjected to load self-distribution according to the ratio of 5:6:5 when the whole set of system is hoisted; thirdly, the rope head of the steel wire rope is adjusted through an electric telescopic mechanism, so that transverse fine adjustment and longitudinal fine adjustment during hoisting of the pressure container are realized, the posture of the pressure container is adjusted, and the pressure container is convenient to mount in place; and fourthly, the angle data and the load data are measured in real time through the angle sensor and the weight sensor and are displayed on an electronic screen, so that an installer can know the lifting condition of the container in real time, and the container can be adjusted in time.

Drawings

Fig. 1 is a schematic view of a pressure vessel in a hoisting state.

Fig. 2 is a schematic structural diagram of a special spreader.

Fig. 3 is a diagram of a wire rope winding.

FIG. 4 is a schematic diagram of fine adjustment in the lateral direction to the left.

FIG. 5 is a schematic diagram of a lateral rightward trimming operation.

FIG. 6 is a schematic diagram of a vertical clockwise fine adjustment operation.

FIG. 7 is a schematic diagram of a longitudinal counterclockwise fine adjustment operation.

Detailed Description

The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.

The utility model provides a three hoisting point self-balancings and load are from distribution special lifting device 200, the hoist main part is carrier bar 2, and carrier bar 2 adopts heavy bearing box roof beam, and carrier bar 2 both sides have designed four hoist and mount hanging points, uses four heavy load becket bridles 1 of symmetry to connect hoist and mount hanging point and crane hook 100.

Middle fixed pulleys 3-1 are symmetrically arranged on two sides of the middle part of the carrier beam 2, a middle movable pulley 9-1 and a middle flange connecting piece 7 are arranged below the middle fixed pulley 3-1, and the middle flange connecting piece 7 carries all the middle movable pulleys 9-1; similarly, two ends of the carrier beam 2 are symmetrically provided with end fixed pulleys 3-2 at two sides, an end movable pulley 9-2 and an end flange connecting piece 6 are arranged below each end fixed pulley 3-2, and the end flange connecting piece 6 at each side carries the corresponding end movable pulley 9-2 and the electric telescopic mechanism 5. Two sides of the carrier beam 2 are respectively wound by a steel wire rope 4, the steel wire rope 4 is sequentially wound on an electric telescopic mechanism 5 at one end, an end fixed pulley 3-2, an end movable pulley 9-2, a middle fixed pulley 3-1 and a middle movable pulley 9-1 which are wound out from the end fixed pulley 3-2 at one end, an end fixed pulley 3-2 at the other end and an end movable pulley 9-2 at the other end, and finally the steel wire rope is wound on the electric telescopic mechanism 5 at the other end through the end fixed pulley 3-2. Thus, two sets of pulley wire rope systems are formed.

Specifically, eight middle fixed pulleys 3-1 are symmetrically arranged on two sides of the middle of the carrier beam 2, namely four middle fixed pulleys 3-1 are respectively arranged on each side of the middle, and three middle movable pulleys 9-1 are arranged below the four middle fixed pulleys 3-1; two sides of two end parts of the carrier beam 2 are respectively provided with six end part fixed pulleys 3-2, namely, each side of the end part is respectively provided with three end part fixed pulleys 3-2, and two end part movable pulleys 9-2 are arranged below the three end part fixed pulleys 3-2 on each side, so that the middle flange connecting piece 7 bears six middle movable pulleys 9-1 in total, and the end part flange connecting piece on each side bears four end part movable pulleys 9-2 and an electric telescopic mechanism 5.

Furthermore, an angle sensor 8 is arranged on the middle flange connecting piece 7, and the angle sensor 8 is a high-precision angle sensor and is used for measuring the horizontal data of the pressure vessel flange; meanwhile, pin shaft type weight sensors 10 are arranged on all the movable pulleys and are used for measuring load data; an electronic screen 11 is arranged above the bearing beam 2, and the angle sensor 8 and the pin shaft type weight sensor 10 are connected with the electronic screen 11, so that the collected flange horizontal data and load data of the pressure vessel can be displayed on the electronic screen 11 arranged on the bearing box type beam.

The working principle of the utility model is as follows:

because the multiplying power of the pulleys of the end flange connecting pieces 6 at the two ends is 5 and the multiplying power of the pulleys of the middle flange connecting piece 7 is 6, the hoisting load of the pulley steel wire rope system is accurately self-distributed and self-balanced according to the proportion of 5:6: 5. When three flange surfaces of the heavy pressure vessel have dimension errors due to processing problems, after the lifting appliance flange connecting piece is connected with the pressure vessel 300 to be lifted, the pulley steel wire rope system can automatically adjust the length of the steel wire rope 4 borne by each flange connecting piece, ensure that each lifting point flange connecting piece is matched with the height of the pressure vessel 300 connecting flange to compensate the processing errors, and reduce the extra load borne by a connecting pipeline between the main tank body and the auxiliary tank body. Meanwhile, the rope end of the steel wire rope 4 is adjusted through the electric telescopic mechanism 5 arranged at the end of the steel wire rope 4, and the posture of the suspended pressure container 300 can be transversely and longitudinally finely adjusted to match with the installation base of the pressure container. A high-precision angle sensor 8 is arranged on a middle flange connecting piece 7 to measure the horizontal data of the flange of the pressure vessel, a pin shaft type weight sensor 10 is arranged on a movable pulley of each flange connecting piece to measure load data, and the data are displayed on an electronic screen 11 arranged on a bearing box type beam, so that an installer can know the hoisting condition of the vessel in real time and adjust the vessel in time.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The technical features of the embodiments described above can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, however, as long as there is no contradiction between the combinations of the technical features, the combinations of the technical features should be considered as being within the scope described in the present specification, and when the combinations of the technical features are contradictory or cannot be realized, the combinations of the technical features should be considered as not being present, and the combinations of the technical features are not within the scope of the claims. Also, it will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the spirit of the principles of the utility model.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the present invention, and these should also be considered as the protection scope of the present invention.

Claims

1. A three-lifting-point self-balancing and load self-distributing special lifting appliance is characterized in that a lifting appliance main body is a carrier beam (2), lifting hanging points are arranged on two sides of the carrier beam (2), and the lifting hanging points and a crane lifting hook (100) are connected by using symmetrical heavy-load rope rings (1); the method is characterized in that: middle fixed pulleys (3-1) are symmetrically arranged on two sides of the middle part of the bearing beam (2), a middle movable pulley (9-1) and a middle flange connecting piece (7) are arranged below the middle fixed pulleys (3-1), and the middle flange connecting piece (7) bears all the middle movable pulleys (9-1); similarly, end fixed pulleys (3-2) are symmetrically arranged on two sides of two ends of the bearing beam (2), an end movable pulley (9-2) and an end flange connecting piece (6) are arranged below each end fixed pulley (3-2), and the end flange connecting piece (6) on each side bears the corresponding end movable pulley (9-2) and the electric telescopic mechanism (5); two sides of the carrier beam (2) are respectively wound by a steel wire rope (4), the steel wire rope (4) is sequentially wound on an electric telescopic mechanism (5) at one end, an end fixed pulley (3-2), an end movable pulley (9-2), an end fixed pulley (3-2) at one end, a middle fixed pulley (3-1) and a middle movable pulley (9-1), an end fixed pulley (3-2) at the other end and an end movable pulley (9-2) at the other end, and finally the steel wire ropes are wound on the electric telescopic mechanism (5) at the other end through the end fixed pulley (3-2), so that two pulley steel wire rope systems are formed.

2. The three-lifting-point self-balancing and load self-distributing special lifting appliance according to claim 1, wherein: eight middle fixed pulleys (3-1) are symmetrically arranged on two sides of the middle part of the carrier beam (2), namely four middle fixed pulleys (3-1) are respectively arranged on each side of the middle part, and three middle movable pulleys (9-1) are arranged below the four middle fixed pulleys (3-1); two sides of two end parts of the bearing beam (2) are respectively provided with six end part fixed pulleys (3-2), namely, each side of the end part is respectively provided with three end part fixed pulleys (3-2), and two end part movable pulleys (9-2) are arranged below the three end part fixed pulleys (3-2) on each side.

3. The three-lifting-point self-balancing and load self-distributing special lifting appliance according to claim 1, wherein: an angle sensor (8) is arranged on the middle flange connecting piece (7), and pin shaft type weight sensors (10) are arranged on all the movable pulleys; an electronic screen (11) is arranged above the bearing beam (2), and the angle sensor (8) and the pin shaft type weight sensor (10) are connected with the electronic screen (11).