CN202953737U

CN202953737U - Double-crab crane

Info

Publication number: CN202953737U
Application number: CN 201220542836
Authority: CN
Inventors: 吴鑫
Original assignee: FUJIAN TIANQI HOISTING MACHINERY Co Ltd
Current assignee: FUJIAN TIANQI HOISTING MACHINERY Co Ltd
Priority date: 2012-10-23
Filing date: 2012-10-23
Publication date: 2013-05-29
Anticipated expiration: 2022-10-23

Abstract

A double-crab crane comprises a bridge and two crabs arranged on the bridge. A lifting hook for lifting an article is arranged at the lower end of each crab, a winding drum and a power driving mechanism for controlling rotation of the winding drum are arranged on the crab, a steel wire rope is connected between the winding drum and the lifting hook, and a detector for detecting the operation turning number and an angle of the winding drum is arranged on the winding drum. According to the double-crab crane in a novel structure, the detectors are arranged on two winding drums and record operation turning numbers and angles of the winding drums, a user is notified the first time and performs necessary modification to enable the two crabs to achieve synchronization to the maximum extent, and a result caused by deflection is effectively avoided. The double-crab crane is simple in structure and convenient to use.

Description

The double trolley hoisting crane

Technical field

The utility model relates to a kind of double trolley hoisting crane.

Background technology

Bridge crane hoisting mechanism rotates Wound steel rope by reel and makes hook lifting, hoist some occasion that descends of double trolley crane hook requires suspension hook synchronized operation, because two double trolley hoisting cranes are to adopt separately-driven mode, therefore the rotating speed of the rotation of two crane carriages has certain deviation, the movement that produces two suspension hooks is asynchronous, produce the phenomenons such as deflection causes that disorder cable can't be worked, when serious by the generation accident.

The utility model content

It is a kind of simple in structure that the purpose of this utility model is to provide, and can guarantee to greatest extent two double trolley hoisting cranes that reel is synchronous.

For solving the problems of the technologies described above, the utility model provides a kind of double trolley hoisting crane, comprise crane span structure and be arranged on two crane carriages of crane span structure top, the crane carriage lower end is provided with the suspension hook of suspention article, be provided with reel on described crane carriage and control the power-driven mechanism that reel rotates, be connected with steel rope between reel and suspension hook, be equiped with the detector that detects the reel running number of turns and angle on described reel.

The utility model improves to be had, and described double trolley hoisting crane also comprises control setup, and described control setup is connected with coder and controls the power-driven mechanism rotation.

The utility model improves to be had, and described control setup is PLC.

The utility model improves to be had, and described power-driven mechanism is motor.

The beneficial effects of the utility model are: the double trolley hoisting crane of new structure, all be equiped with detector on two reels, each the reel running number of turns and angle under detector recording, can the very first time notify the user, and make necessary correction, make two crane carriages realize that to greatest extent synchronously actv. prevents the consequence that deflection causes, it is simple in structure, easy to use.

The accompanying drawing explanation

The front view that accompanying drawing 1 is double trolley hoisting crane of the present utility model;

The left view that accompanying drawing 2 is double trolley hoisting crane of the present utility model;

The birds-eye view that accompanying drawing 3 is double trolley hoisting crane of the present utility model.

Label declaration: 1-crane span structure; The 2-crane carriage; The 21-reel; The 3-suspension hook; The 4-detector; The 5-steel rope; The 6-power-driven mechanism.

The specific embodiment

By describing technology contents of the present utility model, structural attitude in detail, being realized purpose and effect, below in conjunction with embodiment and coordinate accompanying drawing to be explained in detail.

With reference to accompanying drawing 1 to accompanying drawing 3, the utility model shown in accompanying drawing provides a kind of double trolley hoisting crane, comprise crane span structure 1 and be arranged on two crane carriages 2 of crane span structure 1 top, crane carriage 2 lower ends are provided with the suspension hook 3 of suspention article, be provided with reel 21 on described crane carriage 2 and control the power-driven mechanism 6 that reel 21 rotates, be connected with steel rope 5 between reel 21 and suspension hook 3, be equiped with the detector 4 that detects the reel 21 running number of turns and angle on described reel 21.

In the present embodiment, described double trolley hoisting crane also comprises control setup, and described control setup is connected with detector 4 and controls power-driven mechanism 6 rotations.

When two crane carriages 2 need the situation of suspender horizontal lifting, detector 4 counts down Lap Time and the angle of each reel 21 running, and feed back signal to control setup, control setup is PLC in the present embodiment, certainly, in other embodiments, described control setup is likely also programmable storage, the utility model is the concrete scheme of limiting control device not, after control setup receives the signal that detector 4 sends, signal is analyzed and processed, if it is asynchronous two suspenders to be detected, further send instruction to frequency converter, frequency converter has changed the synchronous of two suspension hooks 3 according to instruction drive power-driven mechanism 6 velocities of rotation of control setup,

Wherein, larger if control setup detects two asynchronous deviations of suspension hook 3, while surpassing certain value, the correction of deviation of two power driven synchronizing motors of control setup automatic clear instruction.

In the present embodiment, described power-driven mechanism 6 is motor, concrete, and motor can be servomotor or stepping motor.

The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification sheets and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present utility model.

Claims

1. a double trolley hoisting crane, it is characterized in that, comprise crane span structure and be arranged on two crane carriages of crane span structure top, the crane carriage lower end is provided with the suspension hook of suspention article, be provided with reel on described crane carriage and control the power-driven mechanism that reel rotates, be connected with steel rope between reel and suspension hook, be equiped with the detector that detects the reel running number of turns and angle on described reel.

2. double trolley hoisting crane according to claim 1, is characterized in that, also comprises control setup, and described control setup is connected with coder and controls the power-driven mechanism rotation.

3. double trolley hoisting crane according to claim 1, is characterized in that, described control setup is PLC.

4. double trolley hoisting crane according to claim 1, is characterized in that, described power-driven mechanism is motor.