CN220300230U

CN220300230U - Lifting mechanism of European bridge crane

Info

Publication number: CN220300230U
Application number: CN202321890652.8U
Authority: CN
Inventors: 赵洁; 韩松; 秦俊奇; 韩庆; 韩波
Original assignee: HENAN XINGYUAN CRANE CO Ltd
Current assignee: HENAN XINGYUAN CRANE CO Ltd
Priority date: 2023-07-18
Filing date: 2023-07-18
Publication date: 2024-01-05
Anticipated expiration: 2033-07-18

Abstract

The utility model relates to the technical field of cranes and provides a lifting mechanism of an European bridge crane, which comprises a safety device, a reel and a rotating shaft, and is characterized in that a shell is arranged in the safety device, three fixed blocks are annularly arranged in the shell, the rotating shaft penetrates through the safety device, three movable blocks are annularly arranged on the outer wall of the rotating shaft in the safety device, a shaft body is arranged between the three movable blocks and the rotating shaft, the rotating shaft and the movable blocks are connected and move through the shaft body, and centrifugal force generated by the rotating shaft is matched with the safety device through falling of a suspended object during faults, so that the problem of difficulty in braking in the falling process of the rotating shaft is solved.

Description

Lifting mechanism of European bridge crane

Technical Field

The utility model relates to the technical field of cranes, in particular to a lifting mechanism of an European bridge crane.

Background

European bridge crane, european bridge crane adopts unique design theory, has the characteristics of small in size, light in weight, wheel pressure is little, and in every hoist, the gas holds the mechanism and all is wherein most important part, and current European bridge crane's hoisting mechanism has the defect: when carrying out the lifting operation of object, if the motor breaks down, the pivot that the motor output shaft passes through the shaft coupling and can appear the reversal under the action of the gravity of lifting by crane the thing, leads to lifting by crane the thing and falls, causes lifting by crane the thing to damage, if there is the staff below, causes very big threat to staff's life and property, consequently, need install a brake equipment on hoisting mechanism, at motor trouble, carry out the braking to it when the pivot reverses.

According to the search of Chinese utility model publication number: CN212334417U, this hoisting mechanism of European bridge crane, including mounting panel and empty hoist, the equal fixedly connected with of bottom outer wall both ends of mounting panel No. two fixed plates, and the outer wall fixedly connected with motor of one of them No. two fixed plates, the output shaft of motor passes through the shaft coupling fixedly connected with pivot, and the other end of pivot passes through the bearing to be connected in the outer wall of another No. two fixed plates, the outer wall equidistance fixedly connected with rotor plate that the pivot is close to another No. two fixed plates. According to the lifting mechanism, the spring rods, the braking plates and the rotating plates are arranged, when the motor drives the rotating plates on the rotating shafts to normally rotate, the rotating plates compress the spring rods on the braking plates to ensure the normal rotation of the spring rods, if the motor fails, the rotating shafts rotate reversely under the action of gravity of a lifted object, the rotating plates strike the corners of the braking plates, so that the rotating plates are blocked, the rotating shafts stop rotating, emergency braking is realized, and the safety performance of the lifting mechanism is improved.

The technical scheme solves the problem of emergency braking of the rotating shaft when the motor fails, but still has the problem that the empty hoist part is not provided with a power component, and the rotating direction can be blocked by the braking device in the process of releasing the lifting hook by the crane so as to be incapable of executing instructions, so that the design defect exists, and the lifting mechanism of the European bridge crane is provided.

Disclosure of Invention

The utility model provides a lifting mechanism of an European bridge crane, which solves the problem of difficult braking in the falling process of a rotating shaft by matching a safety device through centrifugal force generated by the rotating shaft due to falling of a suspended object during faults.

The technical scheme of the utility model is as follows: the utility model provides a hoisting mechanism of European bridge crane, includes safeties, reel and pivot, its characterized in that, safeties's inside is provided with the casing the inside of casing is the annular and is provided with three fixed block, wherein the pivot runs through safeties's inside is located simultaneously safeties is inside to be the annular on the outer wall of pivot and is provided with three movable block, three the movable block with be provided with the axis body between the pivot, the pivot with the movable block passes through the axis body is connected and is moved.

Preferably, the two sets of safety devices are respectively sleeved on two sides of the rotating shaft, and the reel is arranged at a position between the two safety devices on the rotating shaft.

Preferably, a motor is arranged on one side of the rotating shaft, and the rotating shaft is connected and fixed with a transmission shaft of the motor.

Preferably, a fixing plate is arranged on one side of the motor away from the safety device, one side of the motor is connected and fixed with the fixing plate, and the other fixing plate is arranged at one end of the rotating shaft away from the motor.

Preferably, a top plate is provided on top of the two fixing plates, and the tops of the two safeties are also connected and fixed with the top plate.

Preferably, two steel cables are wound on the reel, one side, away from the reel, of each steel cable is provided with a balancing weight, and the bottom of each balancing weight is provided with a lifting hook.

Preferably, the winch lines of the winch wheels are opposite directions which are oppositely arranged, and the thread directions of the winch lines are opposite.

Preferably, the movable block is connected with the rotating shaft through the shaft body, and one side, far away from the shaft body, of the movable block is only contacted with the rotating shaft and is not fixed.

The working principle and the beneficial effects of the utility model are as follows:

1. according to the lifting mechanism of the European bridge crane, in the use process, when a motor suddenly fails or stops working, a heavy object pulls a steel cable to quickly fall, at the moment, a movable block is far away from the surface of a rotating shaft under the action of a large centrifugal force, so that a fixed block is clamped, the rotating shaft stops rotating, a braking effect is generated, huge personal and property losses caused by falling of the heavy object are prevented, and when the motor is overhauled and the motor stops working again, a spring arranged below the movable block can pull the movable block back to the surface of the rotating shaft;

2. according to the lifting mechanism of the European bridge crane, in the use process, the screw threads of the winch wheels deviate from each other, so that the stability of lifting a heavy object can be better ensured in the working process, the distance between the tops of the steel cables is the largest when the lifting hook is at the lowest position, the shaking of the heavy object and the steel cables can be effectively avoided, the steel cables are gradually close in the lifting process, and the friction between the steel cables can be better avoided by adopting the design, so that the lifting stroke and the service life of the steel cables are ensured;

3. this hoisting mechanism of European bridge crane has still set up a spring construction in the below of movable block and is close to the position of axis body, avoids the centrifugal force that the motor produced to activate the insurance measure in normal work, guarantees simultaneously that the motor continues to rotate after the maintenance finishes and can guarantee the normal recovery of movable block to do not influence the overall operation of device, hoisting device's practicality.

Drawings

The utility model will be described in further detail with reference to the drawings and the detailed description.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is an exploded view of the overall structure of the present utility model;

FIG. 3 is a schematic diagram of a conventional state of the safety device of the present utility model;

FIG. 4 is a schematic diagram of a triggering state of the safety device according to the present utility model;

in the figure: 1. a top plate; 2. a fixing plate; 3. a motor; 4. a safety device; 5. a reel; 6. a rotating shaft; 7. a wire rope; 8. balancing weight; 9. a lifting hook; 10. a housing; 11. a fixed block; 12. a shaft body; 13. a movable block.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a lifting mechanism of an euro bridge crane, which comprises the following technical scheme: including safeties 4, reel 5 and pivot 6, its characterized in that, the inside of safeties 4 is provided with casing 10, be annular in the inside of casing 10 and be provided with three fixed block 11, wherein pivot 6 runs through the inside of safeties 4, be annular on the outer wall that is located pivot 6 in safeties 4 simultaneously and be provided with three movable block 13, be provided with axis body 12 between three movable block 13 and the pivot 6, pivot 6 and movable block 13 are connected through axis body 12 and move about, when motor 3 suddenly breaks down or stop working in the design of safeties 4, the heavy object can pull steel cable 7 and drop fast, at this moment, the surface of pivot 6 can be kept away from to movable block 13 under great centrifugal force, thereby block 11 blocks the pivot 6 and stop rotating, thereby produce braking effect, the huge personal and property loss that the heavy object produced have prevented that the heavy object from finishing falling, after motor 3 overhauls and re-works, the spring that sets up in movable block 13 can pull back the surface of pivot 6 again.

The safety devices 4 are provided with two groups, which are respectively sleeved on two sides of the rotating shaft 6, and a reel 5 is arranged at the position between the two safety devices 4 on the rotating shaft 6, and the reel 5 is designed to enable the steel cable 7 to be wound on the reel better, so that the motor 3 can directly drive the lifting hook 9 to lift the heavy objects, and the basic work of the whole device is completed.

The motor 3 is arranged on one side of the rotating shaft 6, the rotating shaft 6 is connected with and fixed to the transmission shaft of the motor 3, the rotating shaft 6 is directly in kinetic energy transmission with the motor 3, the waste of power can be effectively saved, the kinetic energy of the motor 3 is directly acted on the rotating shaft 6, and the practical value of the device is increased.

One side of the motor 3, which is far away from the safety device 4, is provided with a fixed plate 2, one side of the motor 3 is connected and fixed with the fixed plate 2, and meanwhile, one end of the rotating shaft 6, which is far away from the motor 3, is also provided with another fixed plate 2, and the design is used for providing a supporting position for the rotating shaft 6 and the motor 3, so that the whole working function of the device is ensured, and the safety and the practicability of the device are ensured.

The top at two fixed plates 2 is provided with roof 1, and the top of two safeties 4 is also connected and fixed with roof 1 simultaneously, and roof 1 is direct to be fixed with fixed plate 2 and safeties 4 can guarantee the holistic security of device, guarantees fixed stability, has also prevented safeties 4 simultaneously and has promoted the practicality of device along with pivot 6 pivoted condition, has increased the practical value of device simultaneously.

Winding is provided with two steel cables 7 on the reel 5, one side that reel 5 was kept away from to two steel cables 7 is provided with balancing weight 8, be provided with lifting hook 9 in the bottom of balancing weight 8, the setting of two steel cables 7 can be better carries out the amortization with the power of heavy object to reduce the atress of single steel cable 7, prolonged the life of steel cable 7, the assurance device that the design of balancing weight 8 can be better simultaneously is more stable when transferring article, less condition of swaing has promoted the security and the practical value of device.

Winch lines of the winch wheel 5 are opposite directions which are oppositely arranged, the thread directions of the winch lines are deviated, the stability of a heavy object is guaranteed in the working process, the distance between the tops of the steel cables 7 is largest when the lifting hook 9 is located at the lowest position, the heavy object and the shaking of the steel cables 7 can be effectively avoided, the winch lines are gradually close to each other in the lifting process, friction between the steel cables 7 can be better avoided through the design, and accordingly the lifting process and the service life of the steel cables 7 are guaranteed.

The movable block 13 is connected with the rotating shaft 6 through the shaft body 12, one side, far away from the shaft body 12, of the movable block 13 is only contacted with the rotating shaft 6 and is not fixed, the movable block 13 is designed to ensure that the surface of the rotating shaft 6 is not attached to the movable block 13 under the normal working condition so as to influence the operation of the device, meanwhile, a spring structure is further arranged at the position, close to the shaft body 12, of the lower part of the movable block 13, centrifugal force generated by the motor 3 is avoided to activate a safety measure in normal working, and meanwhile, the motor 3 is guaranteed to continuously rotate after the maintenance is finished so as to ensure that the normal recovery of the movable block 13 is ensured, thus the integral operation of the device is not influenced, and the practicability of the device is improved.

Working principle: in the use process, the whole device is electrified, then the rotating shaft 6 and the reel 5 are rotated by starting the motor 3, the steel cable 7 is lowered to a required position, then the heavy object is hung on the hanging hook 9, then the motor 3 continues to work, the reel 5 is rotated to retract the steel cable 7, so that the heavy object is lifted, when the motor 3 suddenly fails or stops working, the heavy object can pull the steel cable 7 to quickly fall, at the moment, the movable block 13 can be far away from the surface of the rotating shaft 6 under the action of a large centrifugal force, so that the fixed block 11 is clamped, the rotating shaft 6 stops rotating, a braking effect is generated, huge personal and property losses caused by falling of the heavy object are prevented, and after the motor 3 overhauls and re-works, the spring arranged below the movable block 13 can pull the movable block 13 back to the surface of the rotating shaft 6, so that the whole working flow is finished.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. The utility model provides a hoisting mechanism of European bridge crane, includes safeties (4), reel (5) and pivot (6), its characterized in that, the inside of safeties (4) is provided with casing (10) the inside of casing (10) is annular and is provided with three fixed block (11), wherein pivot (6) run through the inside of safeties (4), be simultaneously in safeties (4) inside are located be annular on the outer wall of pivot (6) and be provided with three movable block (13), three be provided with axis body (12) between movable block (13) with pivot (6), pivot (6) with movable block (13) are passed through axis body (12) and are connected and move about.

2. Hoisting mechanism of an European bridge crane according to claim 1, characterized in that the safety devices (4) are provided with two groups, which are respectively sleeved on both sides of the rotating shaft (6), while the reel (5) is provided at a position between the two safety devices (4) on the rotating shaft (6).

3. Hoisting mechanism of an European bridge crane according to claim 2, characterized in that a motor (3) is arranged on one side of the rotating shaft (6), and the rotating shaft (6) is connected and fixed with the transmission shaft of the motor (3).

4. A lifting mechanism of an euro bridge crane according to claim 3, wherein a fixing plate (2) is arranged on the side of the motor (3) away from the safety device (4), one side of the motor (3) is connected and fixed with the fixing plate (2), and another fixing plate (2) is arranged on the end of the rotating shaft (6) away from the motor (3).

5. Hoisting mechanism of an European bridge crane according to claim 4, characterized in that a top plate (1) is arranged on top of both fixing plates (2), while the tops of both safeties (4) are also connected and fixed to the top plate (1).

6. Hoisting mechanism of an European bridge crane according to claim 1, characterized in that two steel cables (7) are wound on the reel (5), one side of the two steel cables (7) away from the reel (5) is provided with a balancing weight (8), and the bottom of the balancing weight (8) is provided with a lifting hook (9).

7. Hoisting mechanism of an European bridge crane according to claim 1, characterized in that the winch lines of the winch wheel (5) are in opposite directions, and the thread directions of the winch lines are opposite.

8. Hoisting mechanism of an European bridge crane according to claim 1, characterized in that the movable block (13) is connected with the rotating shaft (6) through the shaft body (12), and the side of the movable block (13) far from the shaft body (12) is only contacted with the rotating shaft (6) and is not fixed.