阅读说明：本技术 一种用于起吊捆扎圆钢的机械防摇摆桥式起重机 (Mechanical anti-swing bridge crane for hoisting and bundling round steel ) 是由 刘新波 王玉金 张旭东 黄进前 陈爱梅 聂雨萱 李永福 袁沙沙 于 2021-10-08 设计创作，主要内容包括：一种涉及起重机技术领域的用于起吊捆扎圆钢的机械防摇摆桥式起重机,包含起重机桥架以及安装于起重机桥架顶部用于起升捆扎圆钢的起升机构,还包含液压伸缩装置和用于挂装捆扎圆钢的旋转吊具；起重机桥架下方设有与起升机构对应连接的旋转吊具；所述起升机构包含设于起重机桥架顶部两端且由同一驱动电机同步驱动的卷筒,两个卷筒的筒身均同步缠绕有两根钢丝绳；所述旋转吊具设有四个分别与四根钢丝绳相应对应的动滑轮组,起重机桥架设有四个分别与四个动滑轮组相对应的定滑轮组；本发明吊装作业效率高,同时在旋转吊具转移过程中能够避免旋转吊具发生摇晃的现象。(A mechanical anti-swing bridge crane for lifting round steel strapping relates to the technical field of cranes and comprises a crane bridge, a lifting mechanism, a hydraulic telescopic device and a rotary lifting appliance, wherein the lifting mechanism is arranged at the top of the crane bridge and used for lifting the round steel strapping; a rotary lifting appliance correspondingly connected with the lifting mechanism is arranged below the crane bridge; the hoisting mechanism comprises winding drums which are arranged at two ends of the top of the crane bridge and are synchronously driven by the same driving motor, and two steel wire ropes are synchronously wound on drum bodies of the two winding drums; the rotary hanger is provided with four movable pulley blocks which correspond to the four steel wire ropes respectively, and the crane bridge is provided with four fixed pulley blocks which correspond to the four movable pulley blocks respectively; the rotary lifting appliance has high lifting operation efficiency, and can avoid the phenomenon that the rotary lifting appliance shakes in the transfer process of the rotary lifting appliance.)

1. The utility model provides a mechanical anti-swing bridge crane for lifting and tying up round steel, contains crane bridge (1) and installs in crane bridge (1) top and be used for playing to rise hoisting mechanism (2) of tying up round steel, characterized by: the device also comprises a hydraulic telescopic device (3) and a rotary lifting appliance (4) for hanging and loading the round steel for bundling; a rotary lifting appliance (4) correspondingly connected with the lifting mechanism (2) is arranged below the crane bridge (1);

the hoisting mechanism (2) comprises winding drums (2-1) which are arranged at two ends of the top of the crane bridge (1) and are synchronously driven by the same driving motor (2-2), and two steel wire ropes (2-3) are synchronously wound on drum bodies of the two winding drums (2-1); the rotary hanger (4) is provided with four movable pulley blocks (4-6) which respectively correspond to the four steel wire ropes (2-3), and the crane bridge (1) is provided with four fixed pulley blocks (5) which respectively correspond to the four movable pulley blocks (4-6); the four steel wire ropes (2-3) are wound in a way that the steel wire ropes (2-3) are wound with corresponding movable pulley blocks (4-6), then correspondingly wound with corresponding fixed pulley blocks (5), and then returned to the movable pulley blocks (4-6) to be correspondingly and fixedly connected with a steel wire rope tensioning device (6) arranged on the crane bridge (1);

the steel wire rope tensioning device (6) comprises a fixed seat (6-1), a balance arm (6-3), an adjusting lead screw (6-4) and a fixed plate (6-5), the fixed seat (6-1) is correspondingly and fixedly connected with the crane bridge (1), the middle part of the arm body of the balance arm (6-3) is correspondingly hinged with the top of the fixed seat (6-1), one end of the balance arm (6-3) is correspondingly connected with the fixed end of the corresponding steel wire rope (2-3), the other end of the balance arm (6-3) is hinged with the adjusting lead screw (6-4), one end of the fixed seat (6-1) corresponding to the adjusting lead screw (6-4) is provided with a slot, the slot is rotatably connected with the fixed plate (6-5), and the rotation axis of the fixed plate (6-5) is correspondingly parallel to the rotation axis of the balance arm (6-3), the surface of the fixed plate (6-5) is provided with a through hole for the movable penetration of the adjusting screw rod (6-4), and the rod body of the adjusting screw rod (6-4) is provided with adjusting nuts (6-2) corresponding to the top and the bottom of the fixed plate (6-5);

the rotary lifting appliance (4) comprises a lifting beam (4-1) and lifting hooks (4-2), movable pulley blocks (4-6) are arranged at the positions, close to the two ends of the body of the lifting beam (4-1), of the two sides of the body of the lifting beam (4-1), a plurality of lifting hooks (4-2) capable of hanging and binding round steel at the two sides are arranged at the bottom of the lifting beam (4-1) at intervals along the length direction of the lifting beam, and the top of each lifting hook (4-2) is correspondingly and rotatably connected with the lifting beam (4-1); the hanging beam (4-1) is of a hollow structure, and a driving device (4-3) for driving the hanging hook (4-2) to rotate synchronously is arranged in a cavity of the hanging beam (4-1);

openings are formed in two ends, corresponding to the hoisting mechanism (2), of the crane bridge (1), supporting seats (8) are arranged on two sides, corresponding to the openings, vertical hydraulic telescopic devices (3) are arranged in the two openings, and cross rods which are correspondingly and rotatably connected with the two corresponding supporting seats (8) are arranged at positions, close to the tops, of the hydraulic telescopic devices (3); the hydraulic telescopic device (3) comprises a pipe sleeve I (3-1), a pipe sleeve II (3-2) and a hydraulic cylinder (3-3), the pipe sleeve I (3-1) is correspondingly and rotatably connected with a corresponding supporting seat (8), the pipe sleeve II (3-2) is inserted in the bottom of the pipe sleeve I (3-1) in a sliding mode, the hydraulic cylinder (3-3) driven by a hydraulic system is arranged between the inner bottom of the pipe sleeve II (3-2) and the inner top of the pipe sleeve I (3-1), and the telescopic end of the hydraulic cylinder (3-3) is correspondingly and universally connected with the inner bottom of the pipe sleeve II (3-2) through a ball joint device; the bottom of the pipe sleeve II (3-2) is correspondingly hinged with the top of the hanging beam (4-1) through a hinge assembly (3-4).

2. The mechanical anti-sway bridge crane for lifting bound round steel according to claim 1, characterized by: the driving device (4-3) is a chain wheel and chain driving mechanism driven by a motor, double-row chain wheels are fixedly sleeved on the top of the lifting hook (4-2), one row of two adjacent double-row chain wheels is correspondingly connected in a transmission mode through chains, and the two adjacent chains are arranged up and down and horizontally and are not crossed.

3. A mechanical anti-sway bridge crane for lifting round bar binders as claimed in claim 2, wherein: the motor is correspondingly connected with the corresponding chain wheel in a driving way through a worm gear speed reducer (4-4).

4. The mechanical anti-sway bridge crane for lifting bound round steel according to claim 1, characterized by: the heat insulation device (4-5) is arranged at the bottom of the beam body of the hanging beam (4-1), the heat insulation device (4-5) comprises an installation frame which is correspondingly and fixedly connected with the bottom of the beam body of the hanging beam (4-1), and a heat insulation plate capable of shielding the hanging beam (4-1) is laid on the frame body of the installation frame.

5. The mechanical anti-sway bridge crane for lifting bound round steel according to claim 1, characterized by: the lifting hook (4-2) is of a structure shaped like a Chinese character 'tu'.

6. The mechanical anti-sway bridge crane for lifting bound round steel according to claim 1, characterized by: the lifting mechanism (2) is provided with an encoder which enables a hydraulic system of the driving hydraulic cylinder (3-3) to keep synchronous action with the lifting mechanism (2).

7. The mechanical anti-sway bridge crane for lifting bound round steel according to claim 1, characterized by: and a telescopic rod (7) with the length direction axis being vertical to the axis of the cross rod of the hydraulic telescopic device (3) correspondingly is arranged between the middle part of the hydraulic telescopic device (3) and the crane bridge (1).

8. The mechanical anti-sway bridge crane for lifting bound round steel according to claim 7, characterized by: the telescopic rod (7) is an electric telescopic rod or a hydraulic telescopic rod and is positioned on one side of the hydraulic telescopic device (3) corresponding to the lifting mechanism (2).

9. The mechanical anti-sway bridge crane for lifting bound round steel according to claim 1, characterized by: the fixed end of the steel wire rope (2-3) is correspondingly hinged with the balance arm (6-3).

10. The mechanical anti-sway bridge crane for lifting bound round steel according to claim 1, characterized by: the pressure sensor is sleeved on the adjusting screw rod (6-4) corresponding to the rod body between the bottom of the fixing plate (6-5) and the corresponding adjusting nut (6-2).

Technical Field

The invention relates to the technical field of cranes, in particular to a mechanical anti-swing bridge crane for lifting and binding round steel.

Background

At present, the situations of heat, dirt, fatigue and bulk existing in the field of domestic round steel binding heat treatment quenching manufacturing are very prominent; workers use tools to take out workpieces from the furnace, so that the working efficiency is low, a large amount of time is wasted when the number of the workpieces is large, and high safety risk is also caused; in addition, because the round steel strapping is usually long in size, the round steel strapping is easy to swing in the process of carrying and transferring by the crane, even the round steel strapping drives the crane trolley to swing, so that great potential safety hazards exist, and the phenomenon is a problem to be solved by technical personnel in the field;

chinese patent (publication number: CN 110407110A) discloses a special crane for tubular piles, wherein a telescopic anti-shaking mechanism is fixedly connected between a bridge frame and a hanging beam, and the telescopic anti-shaking mechanism has a guiding function through a guide sleeve and a guide post of the telescopic anti-shaking mechanism so as to achieve the purpose of anti-shaking; however, the two ends of the telescopic anti-shaking mechanism are respectively and correspondingly and fixedly connected with the bridge frame and the hanging beam, so that the requirement on the verticality of the guide sleeve and the guide pillar is high, the assembly difficulty is high, and otherwise, the guide sleeve and the guide pillar are blocked in the use process;

chinese patent (publication number: CN 201753243U) discloses a fine adjustment device for a steel wire rope of a lifting appliance of a dry quenching hoister, wherein the steel wire rope is connected with a screw rod through a wedge sleeve, the screw rod penetrates through a small cross beam to be in threaded connection with a nut, and the purpose of fine adjustment of the length of the steel wire rope is achieved by adjusting the screw rod through the nut; the steel wire rope can drive the screw rod to swing in the crane operation process, so that the screw rod and the small cross beam are frequently in friction collision, the screw rod thread is damaged, the screw rod needs to be replaced again in follow-up fine adjustment, the operation steps are complex, and the length adjustment efficiency of the steel wire rope is low.

Disclosure of Invention

In order to overcome the defects in the background art, the invention discloses a mechanical anti-swing bridge crane for lifting and binding round steel.

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

a mechanical anti-swing bridge crane for lifting round steel strapping comprises a crane bridge, a lifting mechanism, a hydraulic telescopic device and a rotary lifting appliance, wherein the lifting mechanism is arranged at the top of the crane bridge and used for lifting the round steel strapping; a rotary lifting appliance correspondingly connected with the lifting mechanism is arranged below the crane bridge;

the hoisting mechanism comprises winding drums which are arranged at two ends of the top of the crane bridge and are synchronously driven by the same driving motor, and two steel wire ropes are synchronously wound on drum bodies of the two winding drums; the rotary hanger is provided with four movable pulley blocks which correspond to the four steel wire ropes respectively, and the crane bridge is provided with four fixed pulley blocks which correspond to the four movable pulley blocks respectively; the four steel wire ropes are wound in a way that the steel wire ropes are wound with corresponding movable pulley blocks and then correspondingly wound with corresponding fixed pulley blocks, and then the steel wire ropes are returned to the movable pulley blocks and correspondingly fastened and connected with a steel wire rope tensioning device arranged on a crane bridge frame;

the steel wire rope tensioning device comprises a fixed seat, a balance arm, an adjusting lead screw and a fixed plate, wherein the fixed seat is correspondingly and tightly connected with a crane bridge, the middle part of the arm body of the balance arm is correspondingly hinged with the top of the fixed seat, one end of the balance arm is correspondingly connected with the fixed end of a corresponding steel wire rope, the other end of the balance arm is hinged with the adjusting lead screw, one end of the fixed seat corresponding to the adjusting lead screw is provided with a slot, the fixed plate is rotatably connected in the slot, the rotating axis of the fixed plate is correspondingly parallel to the rotating axis of the balance arm, the surface of the fixed plate is provided with a through hole for the adjusting lead screw to movably penetrate through, and the rod body of the adjusting lead screw is provided with an adjusting nut corresponding to the top and the bottom of the fixed plate;

the rotary lifting appliance comprises a lifting beam and lifting hooks, wherein fixed pulley blocks are arranged at positions, close to two ends of the lifting beam body, of two sides of the lifting beam body, a plurality of lifting hooks capable of hanging and binding round steel at two sides are arranged at intervals along the length direction of the bottom of the lifting beam, and the top of each lifting hook is correspondingly and rotatably connected with the lifting beam; the lifting beam is of a hollow structure, and a driving device for driving the lifting hook to rotate synchronously is arranged in a cavity of the lifting beam;

openings are formed in two ends of the crane bridge corresponding to the hoisting mechanism, supporting seats are arranged on two sides of the corresponding openings, vertical hydraulic telescopic devices are arranged in the two openings, and cross rods which are correspondingly and rotatably connected with the two corresponding supporting seats are arranged at positions, close to the tops, of the hydraulic telescopic devices; the hydraulic telescopic device comprises a pipe sleeve I, a pipe sleeve II and a hydraulic cylinder, wherein the pipe sleeve I is correspondingly and rotatably connected with a corresponding support seat, the pipe sleeve II is slidably inserted in the bottom of the pipe sleeve I, the hydraulic cylinder driven by a hydraulic system is arranged between the inner bottom of the pipe sleeve II and the inner top of the pipe sleeve I, and the telescopic end of the hydraulic cylinder is correspondingly and universally connected with the inner bottom of the pipe sleeve II through a ball joint hinge device; the bottom of the pipe sleeve II is correspondingly hinged with the top of the hanging beam through a hinge assembly.

Preferably, the driving device is a chain wheel and chain driving mechanism driven by a motor, the top of the lifting hook is tightly sleeved with double-row chain wheels, one row of the two adjacent double-row chain wheels is in corresponding transmission connection through chains, and the two adjacent chains are arranged up and down and horizontally and are not crossed.

Preferably, the motor is correspondingly in driving connection with the corresponding chain wheel through a worm gear speed reducer.

Preferably, the beam body bottom of hanging beam is equipped with heat-proof device, heat-proof device contains and corresponds the mounting bracket of fastening connection with hanging beam body bottom, and the heat insulating board that can shelter from the hanging beam has been laid to the support body of mounting bracket.

Preferably, the lifting hook is of a soil-shaped structure.

Preferably, the lifting mechanism is provided with an encoder for keeping a hydraulic system for driving the hydraulic cylinder and the lifting mechanism synchronously acting.

Preferably, a telescopic rod with the length direction axis being vertical to the axis of the cross rod of the hydraulic telescopic device correspondingly is arranged between the middle part of the hydraulic telescopic device and the crane bridge.

Preferably, the telescopic rod is an electric telescopic rod or a hydraulic telescopic rod and is positioned on one side of the hydraulic telescopic device corresponding to the lifting mechanism.

Preferably, the fixed end of the steel wire rope is correspondingly hinged with the balance arm.

Preferably, the adjusting screw rod is sleeved with a pressure sensor corresponding to the rod body between the bottom of the fixing plate and the corresponding adjusting nut.

Due to the adoption of the technical scheme, the invention has the following beneficial effects:

the mechanical anti-swing bridge crane for hoisting and binding round steel is simple in structure and high in hoisting operation efficiency; the lifting hook is of a soil-shaped structure, and the lifting hook of the soil-shaped structure can lift four groups of round binding bars simultaneously, so that the operation efficiency of hoisting the round binding bars is effectively improved; the lifting beam is of a hollow structure, and the driving device for driving the lifting hook to rotate is arranged in the cavity of the lifting beam, so that the lifting hook can be driven to rotate through the driving device, manual auxiliary operation is not needed, the lifting operation efficiency of the binding round steel is further improved, and the safety coefficient of the lifting operation is improved;

the telescopic end of the hydraulic telescopic device synchronously lifts along with the rotary lifting appliance in the lifting process of the rotary lifting appliance, the hydraulic telescopic device is locked after the rotary lifting appliance rises to a set position, the rotary lifting appliance is kept stable in the moving process of a crane bridge frame under the combined action of the hydraulic telescopic device and a lifting mechanism, and the phenomenon that the rotary lifting appliance swings is avoided;

in addition, the hoisting mechanism is provided with an encoder which enables a hydraulic system of the driving hydraulic cylinder and the hoisting mechanism to keep synchronous action, the encoder can measure the working state of the hoisting mechanism and transmit corresponding signals to the hydraulic system, the hydraulic system and the hoisting mechanism are guaranteed to always keep synchronous action, the hydraulic telescopic device and the rotary lifting appliance can be guaranteed to keep synchronous lifting, meanwhile, the hydraulic system can be prevented from being frequently suddenly converted from an unloading state into a working state to cause larger impact force on the hydraulic system, and the service life of the hydraulic system is shortened.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of a hoisting mechanism;

FIG. 3 is a schematic view of a wire rope tensioning device;

FIG. 4 is a schematic view of a rotary spreader;

FIG. 5 is an exploded view of the drive assembly;

FIG. 6 is a schematic structural view of a hydraulic telescopic device;

fig. 7 is a schematic view of the internal structure of the hydraulic telescopic device.

In the figure: 1. a crane bridge; 2. a hoisting mechanism; 2-1, winding drum; 2-2, driving a motor; 2-3, steel wire ropes; 3. a hydraulic telescopic device; 3-1, pipe sleeve I; 3-2, pipe sleeve II; 3-3, a hydraulic cylinder; 3-4, a hinge assembly; 4. rotating the lifting appliance; 4-1, hanging a beam; 4-2, a lifting hook; 4-3, a driving device; 4-4, a worm gear speed reducer; 4-5, a heat insulation device; 4-6, a movable pulley block; 5. a fixed pulley block; 6. a wire rope tensioning device; 6-1, fixing seats; 6-2, adjusting a nut; 6-3, a balance arm; 6-4, adjusting a lead screw; 6-5, fixing plates; 7. a telescopic rod; 8. and (4) supporting the base.

Detailed Description

The present invention will be explained in detail by the following embodiments, and the purpose of disclosing the invention is to protect all technical improvements within the scope of the present invention, 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 it is convenient to describe the present invention, and it is not intended to indicate or imply that the referred device or element must have a specific orientation.

With reference to the attached drawings 1-7, the mechanical anti-swing bridge crane for lifting the round steel for binding comprises a crane bridge 1, a lifting mechanism 2 arranged at the top of the crane bridge 1 and used for lifting the round steel for binding, a hydraulic telescopic device 3 and a rotary lifting appliance 4 used for hanging the round steel for binding; a rotary lifting appliance 4 correspondingly connected with the lifting mechanism 2 is arranged below the crane bridge frame 1;

the hoisting mechanism 2 comprises winding drums 2-1 which are arranged at two ends of the top of the crane bridge frame 1 and are synchronously driven by the same driving motor 2-2, and two steel wire ropes 2-3 are synchronously wound on drum bodies of the two winding drums 2-1; the rotary hanger 4 is provided with four movable pulley blocks 4-6 corresponding to the four steel wire ropes 2-3 respectively, and the crane bridge 1 is provided with four fixed pulley blocks 5 corresponding to the four movable pulley blocks 4-6 respectively; the four steel wire ropes 2-3 are wound in a way that the steel wire ropes 2-3 are wound with the corresponding movable pulley blocks 4-6 and then correspondingly wound with the corresponding fixed pulley blocks 5, and then returned to the movable pulley blocks 4-6 and correspondingly fastened and connected with the steel wire rope tensioning devices 6 arranged on the crane bridge 1, so that the stability of the rotary lifting appliance 4 in the lifting and transferring processes can be effectively improved, and the accidental falling of the bound round steel caused by random swinging in the lifting or transferring processes of the rotary lifting appliance 4 is avoided;

the steel wire rope tensioning device 6 comprises a fixed seat 6-1, a balance arm 6-3, an adjusting screw 6-4 and a fixed plate 6-5, the fixed seat 6-1 is correspondingly and fixedly connected with the crane bridge 1, the middle part of the arm body of the balance arm 6-3 is correspondingly hinged with the top of the fixed seat 6-1, one end of the balance arm 6-3 is correspondingly connected with the fixed end of the corresponding steel wire rope 2-3, the other end of the balance arm 6-3 is hinged with the adjusting screw 6-4, one end of the fixed seat 6-1, which corresponds to the adjusting screw 6-4, is provided with a notch, the fixed plate 6-5 is rotatably connected with the notch, the rotation axis of the fixed plate 6-5 is correspondingly parallel to the rotation axis of the balance arm 6-3, the plate surface of the fixed plate 6-5 is provided with a through hole for the adjusting screw 6-4 to movably penetrate through, adjusting nuts 6-2 are arranged at the top and the bottom of the rod body of the adjusting screw 6-4, which correspond to the fixed plate 6-5, namely the fixed end of the steel wire rope 2-3 is correspondingly connected with the balance arm 6-3, and then the adjusting screw 6-4 can be adjusted through the adjusting nut 6-2, so that the balance arm 6-3 rotates around the fixed seat 6-1, the height of the fixed end of the steel wire rope 2-3 is further adjusted, and the purpose of adjusting the levelness of the rotary hanger 4 is achieved; according to the requirement, the fixed end of the steel wire rope 2-3 is correspondingly hinged with the balance arm 6-3, so that the phenomenon that the fixed end of the steel wire rope 2-3 is abraded can be avoided; a pressure sensor is sleeved on the rod body of the adjusting screw 6-4, which corresponds to the position between the bottom of the fixing plate 6-5 and the corresponding adjusting nut 6-2, so that the tensile force borne by the steel wire rope 2-3 can be monitored in real time, and the breakage accident caused by overload of the steel wire rope 2-3 is avoided;

the rotary lifting appliance 4 comprises a lifting beam 4-1 and a lifting hook 4-2, movable pulley blocks 4-6 are arranged at positions, close to two ends of the lifting beam 4-1, of two sides of the body of the lifting beam 4-1, a plurality of lifting hooks 4-2 capable of hanging binding round steel on two sides are arranged at intervals along the length direction of the bottom of the lifting beam 4-1, the top of each lifting hook 4-2 is correspondingly and rotatably connected with the corresponding lifting beam 4-1, namely, the lifting beam 4-1 is correspondingly connected with a lifting mechanism of a crane, the lifting beam 4-1 of the crane drives the lifting hook 4-2, the lifting hook 4-2 drives the binding round steel, the binding round steel is further lifted by the lifting hook 4-2, the binding round steel can be placed by the lifting hook 4-2, the lifting operation efficiency can be effectively improved, the lifting hook 4-2 can fall to a certain height after the binding round steel is lifted by the supporting device, then the lifting hook 4-2 is rotated by 90 degrees to control the lifting beam 4-1 of the crane to lift, so that the lifting hook 4-2 is separated from the round binding steel, the structure is simple, the operation is convenient, and the lifting operation efficiency of the round binding steel is improved; according to the requirement, the lifting hook 4-2 is of a soil-shaped structure, and the lifting hook 4-2 of the soil-shaped structure can lift four groups of round binding bars simultaneously, so that the operation efficiency of hoisting the round binding bars is effectively improved; the lifting beam 4-1 is of a hollow structure, and the driving device 4-3 for driving the lifting hook 4-2 to synchronously rotate is arranged in the cavity of the lifting beam 4-1, so that the lifting hook 4-2 can be driven to rotate by the driving device 4-3, manual auxiliary operation is not needed, the lifting operation efficiency of the bundled round steel is further improved, and the safety coefficient of the lifting operation is improved; the driving device 4-3 is a chain wheel and chain driving mechanism driven by a motor, the structure is simple and reliable, the assembly is convenient, the production cost can be effectively reduced, double-row chain wheels are tightly sleeved on the top of the lifting hook 4-2, one row of two adjacent double-row chain wheels is correspondingly connected through chains in a transmission way, two adjacent chains are arranged up and down and are not crossed horizontally, namely, one lifting hook 4-2 can be driven by the motor to rotate, the lifting hook 4-2 drives the adjacent lifting hook 4-2 to rotate synchronously, and the synchronous action of the lifting hook 4-2 is effectively ensured; the motor is correspondingly and drivingly connected with the corresponding chain wheel through a worm and gear speed reducer 4-4, and the worm and gear speed reducer 4-4 has a self-locking function, so that the purpose of rotating and positioning the lifting hook 4-2 can be realized, and the binding round steel is prevented from accidentally falling off due to random rotation of the lifting hook 4-2;

the bottom of the beam body of the hanging beam 4-1 is provided with a heat insulation device 4-5, the heat insulation device 4-5 comprises an installation frame which is correspondingly and fixedly connected with the bottom of the beam body of the hanging beam 4-1, a heat insulation plate capable of shielding the hanging beam 4-1 is laid on a frame body of the installation frame, high residual temperature still exists after the round steel for bundling is subjected to heat treatment, and the heat insulation device 4-5 can prevent the residual temperature of the round steel for bundling after the heat treatment from being transmitted upwards in a radiation manner to cause the damage of a driving device 4-3;

openings are formed in two ends, corresponding to the hoisting mechanism 2, of the crane bridge 1, supporting seats 8 are arranged on two sides, corresponding to the openings, vertical hydraulic telescopic devices 3 are arranged in the two openings, cross rods which are rotatably connected with the corresponding two supporting seats 8 are arranged at positions, close to the tops, of the hydraulic telescopic devices 3, and the hydraulic telescopic devices 3 are guaranteed not to be in contact with the edges of the openings of the crane bridge 1 all the time; the hydraulic telescopic device 3 comprises a pipe sleeve I3-1, a pipe sleeve II 3-2 and a hydraulic cylinder 3-3, the pipe sleeve I3-1 is correspondingly and rotatably connected with a corresponding supporting seat 8, the pipe sleeve II 3-2 is slidably inserted in the bottom of the pipe sleeve I3-1, the hydraulic cylinder 3-3 driven by a hydraulic system is arranged between the inner bottom of the pipe sleeve II 3-2 and the inner top of the pipe sleeve I3-1, namely the hydraulic cylinder 3-3 can be locked after a rotary lifting appliance 4 is lifted to a set position, the swinging phenomenon of the rotary lifting appliance 4 is avoided, and meanwhile, the pipe sleeve I3-1 and the pipe sleeve II 3-2 can play a guiding role, so that the structural strength of the hydraulic cylinder 3-3 is improved; meanwhile, the telescopic end of the hydraulic cylinder 3-3 is correspondingly and universally connected with the inner bottom of the pipe sleeve II 3-2 through a ball joint hinge device, so that the assembly precision requirement can be reduced, the assembly difficulty can be reduced, and the hydraulic cylinder 3-3 is prevented from being damaged due to the fact that the hydraulic cylinder is accidentally subjected to bending moment;

the bottom of the pipe sleeve II 3-2 is correspondingly hinged with the top of a hanging beam 4-1 through a hinge assembly 3-4, the axis of a hinge shaft of the hinge assembly 3-4 is correspondingly parallel to the axis of a cross rod of the hydraulic telescopic device 3, namely, the lifting of the rotary lifting appliance 4 can be controlled through the lifting mechanism 2, the telescopic end of the hydraulic telescopic device 3 synchronously lifts along with the rotary lifting appliance 4 in the lifting process of the rotary lifting appliance 4, the hydraulic telescopic device 3 is locked after the rotary lifting appliance 4 rises to a set position, the rotary lifting appliance 4 is kept stable under the combined action of the hydraulic telescopic device 3 and the lifting mechanism 2, and the swinging phenomenon is avoided;

in addition, the hoisting mechanism 2 is provided with an encoder which enables a hydraulic system driving a hydraulic cylinder 3-3 and the hoisting mechanism 2 to keep synchronous action, the encoder can measure the working state of the hoisting mechanism 2 and transmit corresponding signals to the hydraulic system, the hydraulic system and the hoisting mechanism 2 are guaranteed to always keep synchronous action, the hydraulic expansion device 3 and the rotary lifting appliance 4 can be guaranteed to keep synchronous lifting, meanwhile, the hydraulic system can be prevented from being suddenly converted from an unloading state into a working state to cause larger impact force on the hydraulic system, and the service life of the hydraulic system is shortened; a telescopic rod 7 with the length direction axis being vertical to the axis of the cross rod of the hydraulic telescopic device 3 correspondingly is arranged between the middle part of the hydraulic telescopic device 3 and the crane bridge 1, the telescopic rod 7 is an electric telescopic rod or a hydraulic telescopic rod, and the telescopic rod 7 can be locked after the rotary lifting appliance 4 is lifted to a set position, so that the swing of the hydraulic telescopic device 3 is limited, the stability of the rotary lifting appliance 4 in the moving process of the crane bridge 1 is further improved, and the swing phenomenon of the rotary lifting appliance 4 is further avoided; the telescopic rod 7 is located on one side of the hydraulic telescopic device 3 corresponding to the lifting mechanism 2, and is compact and reasonable in layout and easy to install.

When the mechanical anti-swing bridge crane for lifting the round binding steel is used, the lifting of the rotary lifting appliance 4 is controlled by the lifting mechanism 2, the round binding steel is placed on two sides of the lifting hook 4-2, the lifting beam 4-1 is lifted by the crane, the lifting hook 4-2 is driven by the lifting beam 4-1, the round binding steel is driven by the lifting hook 4-2, the round binding steel is further lifted, the round binding steel can be placed on two sides of the lifting hook 4-2, the lifting operation efficiency can be effectively improved, the lifting hook 4-2 can fall to a certain height after the round binding steel is lifted in place by the supporting device, and then the lifting hook 4-2 rotates 90 degrees to control the lifting beam 4-1 of the lifting mechanism 2, so that the lifting hook 4-2 is separated from the round binding steel; the telescopic end of the hydraulic telescopic device 3 synchronously ascends and descends along with the rotary lifting appliance 4 in the lifting process of the rotary lifting appliance 4, the hydraulic telescopic device 3 is locked after the rotary lifting appliance 4 ascends to a set position, the rotary lifting appliance 4 is kept stable in the moving process of the crane bridge 1 under the combined action of the hydraulic telescopic device 3 and the steel wire ropes 2-3, and the phenomenon that the rotary lifting appliance 4 swings is avoided.

The invention is not described in detail in the prior art, and it is apparent to a person skilled in the art that the invention is not limited to details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.