CN113135517A

CN113135517A - Electric chain hoist

Info

Publication number: CN113135517A
Application number: CN202110592633.6A
Authority: CN
Inventors: 苏光耀; 邓兵; 黄樟土
Original assignee: Zhejiang Wuyi Mechinery Co ltd
Current assignee: Zhejiang Wuyi Mechinery Co ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-07-20

Abstract

The invention discloses a chain electric hoist, which relates to the technical field of hoisting devices and comprises a hook frame, a chain, a swinging mechanism and a wallboard, wherein the swinging mechanism comprises a guide wheel frame and a guide wheel, the guide wheel frame is of a symmetrical structure, a rotating connecting structure is arranged between the guide wheel frame and the hook frame, the connecting part of the rotating connecting structure is positioned on a symmetrical shaft of the guide wheel frame, and the guide wheel is rotatably connected to the symmetrical two ends of the guide wheel frame; the wallboard is equipped with the guide slot, the guide slot with the axle cooperation of guide pulley forms limit structure, the axle sliding connection of guide pulley in the wallboard. Has the following beneficial effects: (1) the interference between the load side guide wheel and the lifting chain is avoided, and the abnormal abrasion of the chain and the damage of the guide wheel are prevented; (2) the non-load side guide wheel can be closer to the hoisting chain, so that the chain is better meshed with the chain wheel, and the chain climbing is prevented; (3) the chains on two sides of the electric hoist can be lifted, so that the working efficiency is improved, and the energy consumption is reduced.

Description

Electric chain hoist

Technical Field

The invention relates to the technical field of hoisting devices, in particular to a chain electric hoist.

Background

The electric hoist is a hoisting device and is arranged on a crown block and a gantry crane. The electric hoist has the characteristics of small volume, light dead weight, simple operation, convenient use and the like, and is used in places such as industrial and mining enterprises, storage, wharfs and the like.

Electric block compact structure, the design is used for the jack-up for one side chain usually, and the opposite side hangs naturally or arranges in the chain bag, carries out the promotion and the decline of heavy object from top to bottom through the motor drive lifting hook during the use, and one side chain can not be used for the jack-up in addition, and the lifting hook need put down during cyclic use just can promote the heavy object once more, and the availability factor is lower, and especially big specification electric block functioning speed is slow, and the time that the lifting hook put down is longer, seriously influences work efficiency. The chain and the chain guide device of the chain hoist which can be used on both sides are easy to interfere and block when the swing amplitude of the two ends is large, the chain can fly out sometimes, the chain can generate larger acting force on other parts of the hoist, and the damage probability of the chain hoist is increased.

Disclosure of Invention

1. Technical problem to be solved by the invention

Aiming at the technical problems that the traditional chain hoist is usually lifted on one side, the chain hoist lifted on two sides is easy to interfere, the generated stress action is more, and the device is easy to damage, the invention provides the chain electric hoist, which adopts a mode that the chain hoist can work on two sides, a swing mechanism is additionally arranged, a movable guide wheel is designed, the interference of a chain and the guide wheel is avoided, a stress structure is optimized, and the damage probability of the chain hoist is reduced.

2. Technical scheme

In order to solve the problems, the technical scheme provided by the invention is as follows:

a ring chain electric hoist comprises a hook frame, a chain, a swing mechanism and a wallboard,

the lifting hook frame is rotatably connected to the wallboard, and a section of volume is extended at the joint of the lifting hook frame and the wallboard and is rotatably connected to the swing mechanism;

the chain is wound on the chain wheel;

the swing mechanism comprises a guide wheel frame and a guide wheel, the guide wheel frame is of a symmetrical structure, a rotary connecting structure is arranged between the guide wheel frame and the hook hanging frame, the connecting part of the rotary connecting structure is positioned on a symmetrical shaft of the guide wheel frame, the guide wheel is rotatably connected to two symmetrical ends of the guide wheel frame, and the guide wheel is provided with a shaft;

the wallboard, the wallboard is equipped with the guide slot, the guide slot with the axle cooperation of guide pulley forms limit structure, the axle sliding connection of guide pulley in the wallboard, the guide slot is the arc structure.

Optionally, the rotary connection structure comprises a shifting plate, a supporting rod and a shifting shaft, and two ends of the shifting plate are rotatably connected to the hook frame and the guide wheel frame through the shifting shaft.

Optionally, a height difference exists between a joint of the rotating connecting structure and a joint of the guide wheel, and the joint of the rotating connecting structure is higher than the joint of the guide wheel.

Optionally, the wallboard is equipped with spacing post, be equipped with the breach on the guide pulley frame, spacing post with the breach cooperation, the breach is the arc, the length less than or equal to of breach the length of guide slot.

Optionally, a support column is arranged in the wall plate and fixedly connected to the wall plate.

Optionally, the wall plate is provided with a chain wheel, and the chain is wound around the chain wheel.

Optionally, one side of the guide wheel frame close to the chain wheel is arc-shaped.

Optionally, an annular groove is formed in the middle of the guide wheel, and the annular groove is U-shaped.

Optionally, the wall plate is of a double-layer plate structure, and the hook frame, the swing mechanism, the wall plate and the chain are located between the double-layer plate structure.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

(1) the embodiment of the application provides a chain electric block, avoids load side guide wheel and jack-up chain to interfere, prevents chain abnormal wear and guide pulley damage.

(2) The utility model provides a loop chain electric block makes non-load side guide wheel can be closer to the jack-up chain, lets chain and sprocket meshing better, prevents to climb the chain that this application embodiment provided.

(3) The embodiment of the application provides a chain electric block, makes electric block both sides chain can both improve work efficiency owing to the jack-up, has reduced the energy consumption.

Drawings

Fig. 1 is a schematic structural diagram of a chain hoist according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a wall panel of a chain electric hoist according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a shifting plate of the electric chain hoist according to the embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a wheel frame of the electric chain hoist according to an embodiment of the present invention.

1. A hook frame; 2. a hook shaft; 3. a lifting hook frame poking shaft; 4. a support bar; 5. a guide wheel frame poking shaft; 6. dialing a plate; 7. a guide wheel frame; 8. a guide wheel; 801. a ring groove; 9. a wallboard; 901. a guide groove; 10. and a chain.

Detailed Description

For a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings.

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. The terms first, second, and the like in the present invention are provided for convenience of describing the technical solution of the present invention, and have no specific limiting effect, but are all generic terms, and do not limit the technical solution of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The technical solutions in the same embodiment and the technical solutions in different embodiments can be arranged and combined to form a new technical solution without contradiction or conflict, and the technical solutions are within the scope of the present invention.

Examples

With reference to fig. 1-4, a chain electric block comprises a hook frame 1, a chain 10, a swing mechanism and a wall plate 9, wherein the hook frame 1 is rotatably connected to the wall plate 9, and one end of the hook frame 1 is of an annular structure and is used for being connected to external load-bearing equipment and the like by objects such as an external hook or the chain 10. And a lifting hook shaft 2 is arranged at the joint of the lifting hook frame 1 and the wallboard 9, and the lifting hook shaft 2 penetrates through the lifting hook frame 1 and the wallboard 9. The joint of the hook hanger 1 and the wallboard 9 extends to form a section of volume which is rotationally connected with the swing mechanism, the section of volume is used for connecting the shifting plate 6, the section of volume is provided with a through hole, and the hook hanger shifting shaft 3 is fixedly connected with the shifting plate 6 and penetrates through the through hole.

The chain 10 is used for load hoisting, the wall plate 9 is provided with a chain wheel, and the chain 10 is wound on the chain wheel. The middle of the guide wheel 8 is provided with a ring groove 801. The chain 10 is matched with the annular groove 801 of the guide wheel 8, the annular groove 801 is U-shaped, sliding of the chain 10 is facilitated, and the annular groove 801 can limit the chain 10.

The swing mechanism comprises a guide wheel frame 7 and a guide wheel 8, the swing mechanism is used for controlling the position relation between the guide wheel 8 and the chain 10 and the position relation between the hook hanging frame 1 and the chain 10 for load work, the guide wheel frame 7 is of a symmetrical structure, a rotary connecting structure is arranged between the guide wheel frame 7 and the hook hanging frame 1, and the connecting part of the rotary connecting structure is located on a symmetrical shaft of the guide wheel frame 7, so that the hoist can be kept in a state of left-right balance when not being loaded. The guide wheels 8 are rotatably connected to two symmetrical ends of the guide wheel frame 7. The rotary connecting structure comprises a shifting plate 6, a supporting rod 4 and a shifting shaft, wherein two ends of the shifting plate 6 are rotatably connected with the hook hanging frame 1 and the guide wheel frame 7 through the shifting shaft. On the shifting plate 6, a lifting hook frame shifting shaft 3 is close to the lifting hook frame 1, and a guide wheel frame shifting shaft 5 is close to the guide wheel frame 7. The hook frame shifting shaft 3 and the guide wheel frame shifting shaft 5 are rotatably connected.

The poking plate 6 is of a two-piece structure, is positioned through a poking shaft and can rotate around the supporting rod 4. The connecting part of the rotating connecting structure and the connecting part of the guide wheel 8 have a height difference, and the connecting part of the rotating connecting structure is higher than the connecting part of the guide wheel 8. In this embodiment, the guide wheel frame 7 is arc-shaped, and the joint of the rotating connection structure and the joint of the guide wheel 8 form an isosceles triangle structure. After one side chain 10 receives the load, the whole use of lifting hook axle 2 of calabash rotates as the centre of a circle and reaches the stress balance, rotate connection structure's junction with behind the junction of guide pulley 8 has the difference in height, can reduce the whole pivoted angle of calabash, avoid the too big messenger chain 10 dislocation of calabash rotation angle even from the sprocket to drop. The function of the striking plate 6 is to compensate for the distance between the centre line of the hook carrier 1 and the plumb line of the loaded chain 10: after the chain 10 on one side is loaded, one end of the lifting hook frame 1 of the shifting plate 6 is fixed, the other end of the lifting hook frame 1 is pulled by a non-stressed side, the shifting plate 6 rotates by a certain angle, the shifting plate 6 has a certain length, the position of the guide wheel frame 7 deviates to the non-stressed side after the rotation, the moving length of the chain 10 on the stressed side is compensated, the central line of the lifting hook frame 1 is closer to the plumb line of the loaded chain 10, the stressed structure is optimized, and the service life of the device is prolonged.

The guide wheel 8 is provided with a shaft which is longer than the width of the guide wheel 8 and which extends into the guide groove 901 of the wall plate 9. The guide groove 901 is matched with the shaft of the guide wheel 8 to form a limiting structure, the shaft of the guide wheel 8 is connected to the wall plate 9 in a sliding manner, and the guide groove 901 is of an arc-shaped structure. Under the pulling force of the shifting plate 6, the shaft of the guide wheel 8 has a reverse rotation trend of rotating integrally with the hoist, so that the guide wheel 8 is pulled to slide in the guide groove 901, the real rotation angle of the guide wheel 8 after sliding is smaller than that of the hoist, and the compensation of the rotation angle is formed, wherein the rotation angle is the rotation of the two guide wheels 8 integrally rather than the rotation of the single guide wheel 8. After the compensation of the rotation angle is formed, the position of the guide wheel 8 at one end of the chain 10 working under load is far away from the chain 10 than the position of the guide wheel 8 without the compensation of the rotation angle, so that the interference with the chain 10 is avoided. The guide wheel 8 at one end of the chain 10 which does not work under load is closer to the chain 10 than the compensation without forming a rotation angle, so that the limit of the chain 10 at the end is strengthened, and the dislocation and even the falling of the chain 10 are avoided.

The arc-shaped structure of the guide groove 901 takes the center of a circle of a chain wheel wound by the chain 10 as the center of a circle, the shape of the guide groove 901 determines the motion track of the guide wheel 8, and the arc-shaped structure ensures that the guide wheel 8 can be correctly close to or far away from the chain 10 after the rotation of the hoist, so as to achieve the purpose of respectively holding the guide wheels 8. The connecting line of the guide groove 901 intersects with the axis of the sprocket, and the chain 10 needs to be close to the sprocket by the guide wheel 8 on the non-stressed side so as to prevent the chain 10 from being misplaced or falling off, and the intersecting of the connecting line of the guide groove 901 and the axis of the sprocket means that a horizontal line passing through the axis passes through the guide groove 901 in a balanced state, that is, the chain 10 is limited by the guide wheel 8 on the non-stressed side moving to the lowest end of the guide groove 901 so as to enable the chain 10 to be close to the sprocket, and prevent the chain 10 from falling off.

Wallboard 9 is equipped with spacing post, be equipped with the breach on the guide pulley frame 7, the breach is used for keeping away the position. The limiting column is matched with the notch, the notch is arc-shaped, and the length of the notch is smaller than or equal to that of the guide groove 901. The structure of the limiting column and the notch is used for protecting the structure of the guide groove 901 and the guide wheel 8 when the load force is too large, and the safety is improved.

Be equipped with the support column in wallboard 9, the support column rigid coupling in wallboard 9. The support posts facilitate improving the structural strength of the wall panel 9. The wallboard 9 is a double-layer plate structure, and the hook hanger 1, the swing mechanism, the wallboard 9 and the chain 10 are positioned between the double-layer plate structure. And a low-speed reducer, a high-speed reducer and a disc type self-braking motor are connected to the outside of the wallboard 9. The low-speed reducer, the high-speed reducer and the disc type self-braking motor control the chain wheel to rotate so as to control the chain 10 to lift.

The working principle is as follows: lifting a heavy object by using the stressed side chain 10, tilting the non-stressed side of the hoist under the action of the gravity of the heavy object, and rotating the wallboard 9 around the hook shaft 2 until the central line of the hook shaft 2 is collinear with or extremely close to the plumb line of the chain 10; the shifting plate 6 rotates around the supporting rod under the action of the lifting hook frame shifting shaft 3, the shifting plate 6 drives the guide wheel frame 7 while rotating, the guide wheel frame 7 drives the guide wheel 8 to slide along the guide groove 901 of the wall plate 9, so that the guide wheel 8 on the stressed side is far away from the hoisting chain 10 on the stressed side, and the guide wheel 8 on the non-stressed side is close to the hoisting chain 10 on the non-stressed side. The stressed side guide wheel 8 is far away from the hoisting chain 10 to avoid interference with the chain 10, and the non-stressed side guide wheel 8 is close to the hoisting chain 10 to press the hoisting chain 10 to prevent the hoisting chain 10 from sliding out of the hoisting chain wheel. Therefore, the hoisting chains 10 on two sides of the hoist can be used for hoisting.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims

1. A ring chain electric hoist is characterized by comprising a hook frame, a chain, a swing mechanism and a wallboard,

the chain is wound on the chain wheel;

2. The electric chain hoist as claimed in claim 1, wherein the rotary connection structure comprises a shifting plate, a support rod and a shifting shaft, and both ends of the shifting plate are rotatably connected to the hook frame and the wheel guide frame through the shifting shaft.

3. The electric chain hoist as claimed in claim 1, wherein the joint of the rotating connecting structure and the guide wheel has a height difference, and the joint of the rotating connecting structure is higher than the joint of the guide wheel.

4. The electric chain hoist as claimed in claim 1, wherein the wall plate is provided with a limiting post, the guide wheel frame is provided with a notch, the limiting post is matched with the notch, the notch is arc-shaped, and the length of the notch is less than or equal to that of the guide groove.

5. The electric chain hoist as claimed in claim 1, wherein a support column is provided in the wall plate, and the support column is fixed to the wall plate.

6. The electric hoist with chain as claimed in claim 1, wherein the wall plate is provided with a sprocket, and the chain is wound around the sprocket.

7. The electric hoist with endless chain as claimed in claim 1, wherein the side of the wheel frame near the sprocket is arc-shaped.

8. The electric chain hoist as claimed in claim 1, wherein the guide wheel has a ring groove in the middle, and the ring groove is U-shaped.

9. The electric chain hoist as claimed in any one of claims 1 to 8, wherein the wall plate is of a double-plate structure, and the hook frame, the swing mechanism, the wall plate and the chain are located between the double-plate structure.