CN218879186U

CN218879186U - Shock attenuation buffer for hoist

Info

Publication number: CN218879186U
Application number: CN202222304012.6U
Authority: CN
Inventors: 胡军; 廖偃杉
Original assignee: Yunnan Lishen Heavy Industry Machinery Co ltd
Current assignee: Yunnan Lishen Heavy Industry Machinery Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2023-04-18
Anticipated expiration: 2032-08-31

Abstract

A shock absorption buffer device for a crane comprises a lifting hook, a steel rope, a winch and a winch rotating shaft; a rotating shaft is arranged at the top of the lifting hook, and a steel rope is arranged on the rotating shaft; a shock absorber is arranged between the steel rope and the shock absorber, the bottom of the shock absorber is connected to the rotating shaft in a rotating mode, and the top of the shock absorber is fixedly connected with the steel rope; the winch motor is connected to the controller, and the problem that potential safety hazards are caused due to the fact that the steel rope horizontally throws up in the process that a heavy object suddenly drops in the existing steel rope hoisted by a single steel rope is solved.

Description

Shock attenuation buffer for hoist

Technical Field

The utility model relates to a general mechanical equipment technical field, concretely relates to shock attenuation buffer for hoist.

Background

The crane is a multi-action hoisting machine for vertically lifting and horizontally carrying heavy objects within a certain range, is mainly used for vertically and horizontally conveying materials in construction, and a crane arm of the crane is provided with a pulley block to play a role in guiding and dragging a steel cable. In the in-process of using, because do not install the device of shock attenuation buffering on the equipment, no matter lift by crane or can all produce vibrations at the beginning of releasing at the in-process of using, these vibrations all can cause certain influence to equipment, this is all not main, mainly be at its in-process of hanging, if the sudden heavy object that appears hangs down, because the steel cable collapses very tightly under the gravity of heavy object, the heavy object drops in the twinkling of an eye suddenly and can make originally collapse the steel cable that tightly and throw away in the twinkling of an eye, especially to the great steel cable of elasticity that adopts single steel rope to lift by crane, can throw the steel cable level up more, hurt the people very easily.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a shock attenuation buffer for hoist solves the problem that the steel cable that current single steel cable lifted by crane can the steel cable level get rid of the production potential safety hazard at the in-process that the heavy object dropped suddenly.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a shock absorption buffer device for a crane comprises a lifting hook, a steel rope, a winch and a winch rotating shaft; a rotating shaft is arranged at the top of the lifting hook, and a steel rope is arranged on the rotating shaft; a shock absorber is arranged between the steel rope and the shock absorber, the bottom of the shock absorber is connected to the rotating shaft in a rotating mode, and the top of the shock absorber is fixedly connected with the steel rope; the steel rope is connected in the winch, a pressure sensor is arranged at the bottom of a winch rotating shaft connected with the winch motor and connected to the controller, and the winch motor is connected to the controller.

Furthermore, a connector is arranged at the top of the shock absorber and is fixedly connected with the steel rope; the bottom of the shock absorber is provided with a shaft sleeve which is in turn connected with the rotating shaft.

Furthermore, the shock absorber is arranged to be a telescopic shaft and comprises a shell, an inner cavity and a telescopic shaft; the shell is cylindrical, a hollow inner cavity is formed in the shell, the telescopic shaft is connected in the inner cavity in a sliding mode, and a spring is arranged between the telescopic shaft and the bottom of the inner cavity; the connector sets up at the top of telescopic shaft, the axle sleeve sets up the bottom at the shell.

Furthermore, a connecting plate is arranged on the telescopic shaft in the inner cavity, a spring is arranged on the connecting plate, a damper is arranged in the middle of the spring, the bottom of the spring is connected with the damper, and the top of the damper is connected with the connecting plate.

Furthermore, the connecting plate, the spring and the damper are at least provided with three to four sets.

Furthermore, each set of connecting plate, the spring and the damper are arranged in a spiral step shape around the telescopic shaft.

Compared with the prior art, the beneficial effects of the utility model are that:

in the using process, when a heavy object is lifted, the pressure sensor 7 recognizes a large pressure, the brake rotating shaft of the winch 5 is in a brake state at the moment, only the heavy object is put down, in the process, when the heavy object falls accidentally, the steel rope 4 loses the heavy object instantly, the pressure value of the pressure sensor 7 changes in a cliff type manner, the controller is triggered at the moment, the controller controls the motor and the brake device, the steel rope 4 is loosened while the brake device is released, because the spring in the shock absorber 3 is opened, at the moment when the heavy object falls, the phenomenon that the shock absorber 3 draws and injects the steel rope 4 is caused, and because the spring in the shock absorber 3 loosens the steel rope 4, at the moment, only the gravity trend that the steel rope 4 is forced upwards and downwards along the steel rope 4 to the middle is caused, but the gravity trends of the heavy objects in rows of the shock absorber 3 and the lifting hook 1 exist, the upward force of the steel rope 4 is retracted, the potential safety hazard that the steel rope 4 shakes slightly, and the potential safety hazard is avoided.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is the structural schematic diagram of the shock absorber of the present invention.

In the figure, a lifting hook (1), a rotating shaft (2), a shock absorber (3), a steel rope (4), a winch (5), a winch rotating shaft (6), a pressure sensor (7), a shell (31), an inner cavity (32), a telescopic shaft (33), a connector (34), a shaft sleeve (35), a connecting plate (36), a spring (37) and a damper (38).

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The specific implementation is as follows:

the shock absorption buffer for the crane comprises a lifting hook 1, a steel rope 4, a winch 5 and a winch rotating shaft 6; in this embodiment, the top of the hook 1 is provided with the rotating shaft 2, the steel rope 4 is arranged on the rotating shaft 2, when the single steel rope is adopted for hoisting, the steel rope 4 is directly connected with the rotating shaft 2, and when a plurality of groups of steel ropes are required for hoisting, the pulley block can be formed by installing pulleys on the rotating shaft 2. In the embodiment, the single steel rope 4 is adopted for hoisting, so that the shock absorber 3 is arranged between the single steel rope 4 for shock absorption and buffering, the bottom of the shock absorber 3 is connected to the rotating shaft 2 in a rotating mode, the top of the shock absorber is fixedly connected with the steel rope 4, and at the moment, if the shock absorber 3 is used for forming a pulley block, other movable pulleys need to be arranged at the top of the shock absorber for forming the pulley block. The device reduces and reduces the vibration of the bottom through the shock absorber 3, however, the structure is adopted, only one shock absorber 3 at the bottom is insufficient, the steel rope 4 is connected in the winch 5, the pressure sensor 7 is arranged at the bottom of a winch rotating shaft 6 connected with the winch motor of the winch 5 and connected to the controller, the winch motor is connected to the controller, therefore, in the using process, when a heavy object is lifted, the pressure sensor 7 recognizes a larger pressure, the braking rotating shaft of the winch 5 is also in the braking state at the moment, only the heavy object is put down, in the process, when the heavy object accidentally drops, the steel rope 4 instantly loses the heavy object, the pressure value of the pressure sensor 7 can change in a cliff type, the controller is triggered at the moment, the controller controls the motor and the braking device, the steel rope 4 is loosened while the braking device is released, if the design scheme is not available, the steel rope 4 can be pulled back and swung under the action of the self elastic force, and after the device is adopted, because the spring in the shock absorber 3 is opened, at the moment that a heavy object falls, the phenomenon that the shock absorber 3 pumps the steel rope 4 can be caused due to the self weight and the gravity direction of the spring in the shock absorber 3, and in the spring reaction time, the steel rope 4 is already loosened by the winch at the top, only the upward and downward force of the steel rope 4 tends to the middle along the steel rope 4 can be generated at the moment, but because the gravity trends of a series of heavy objects of the shock absorber 3 and the lifting hook 1 also exist, the upward retracting force of the steel rope 4 can be mutually counteracted, so that the steel rope 4 can only shake in a small amplitude instead of being directly swung, and the potential safety hazard is avoided. In this application, it should be noted that the total weight of the weight under the steel cord 4 such as the shock absorber 3 is at least 3 times or more the weight of the tensile short steel cord 4.

In order to facilitate connection of the device, a connector 34 is arranged at the top of the shock absorber 3 and is fixedly connected with the steel rope 4; a shaft sleeve 35 is arranged at the bottom of the shock absorber 3 and is connected with the rotating shaft 2 in a switching way.

In another embodiment, in order to achieve the object of the present application, where a common shock absorber is not suitable, the present solution provides a new shock absorber, wherein the shock absorber 3 is provided as a telescopic shaft, comprising a housing 31, an inner cavity 32, and a telescopic shaft 33. Specifically, the housing 31 is cylindrical, a hollow inner cavity 32 is formed in the housing 31, the telescopic shaft 33 is slidably connected in the inner cavity 32, a spring is arranged between the telescopic shaft 33 and the bottom of the inner cavity 32, only the spring is arranged, and no damper is arranged, at this time, the telescopic shaft 33 only has a buffering function and cannot release vibration damping, so that the telescopic shaft 33 in the inner cavity 32 is preferably provided with a connecting plate 36, the connecting plate 36 is provided with a spring 37, a damper 38 is arranged in the middle of the spring 37, the bottom of the spring 37 is connected with the damper 38, and the top of the damper 38 is connected with the connecting plate 36. This enables the release of the vibration energy through the damper 38. Preferably, the shock absorber 3 is a middle connecting member, the receiving capacity is very large, one spring 37 and two springs 37 are not well connected, so that in the present application, at least three or four sets of the connecting plates 36, the springs 37 and the dampers 38 are arranged, and each set of the connecting plates 36, the springs 37 and the dampers 38 is spirally stepped around the telescopic shaft 33. Therefore, the strength requirement of connection can be met, and sufficient shock absorption and energy discharge capacity can be provided. Moreover, the spring dampers are arranged in a spiral step shape, and the springs without the dampers are arranged at the bottom of the telescopic shaft 33, so that the structure can better neutralize and remove the rebound capability generated instantly. For the convenience of connection, the connector 34 is disposed at the top of the telescopic shaft 33, and the bushing 35 is disposed at the bottom of the housing 31.

Reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," "a preferred embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described in general terms in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope and spirit of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. A shock absorption buffer device for a crane comprises a lifting hook (1), a steel rope (4), a winch (5) and a winch rotating shaft (6); the method is characterized in that: a rotating shaft (2) is arranged at the top of the lifting hook (1), and a steel rope (4) is arranged on the rotating shaft (2); a shock absorber (3) is arranged between the shock absorber and the steel rope (4), the bottom of the shock absorber (3) is rotationally connected to the rotating shaft (2), and the top of the shock absorber is fixedly connected with the steel rope (4); the steel rope (4) is connected in the winch (5), a pressure sensor (7) is arranged at the bottom of a winch rotating shaft (6) connected with the winch motor of the winch (5) and connected to the controller, and the winch motor is connected to the controller.

2. The crane damping and buffering device according to claim 1, wherein: the top of the shock absorber (3) is provided with a connector (34) which is fixedly connected with the steel rope (4); the bottom of the shock absorber (3) is provided with a shaft sleeve (35) which is connected to the rotating shaft (2) in a switching way.

3. The crane damping and buffering device according to claim 2, wherein: the shock absorber (3) is arranged as a telescopic shaft and comprises a shell (31), an inner cavity (32) and a telescopic shaft (33); the shell (31) is cylindrical, a hollow inner cavity (32) is formed in the shell (31), the telescopic shaft (33) is connected in the inner cavity (32) in a sliding mode, and a spring is arranged between the telescopic shaft (33) and the bottom of the inner cavity (32); the connector (34) is arranged at the top of the telescopic shaft (33), and the shaft sleeve (35) is arranged at the bottom of the shell (31).

4. The crane shock-absorbing buffer device according to claim 3, wherein: a connecting plate (36) is arranged on the telescopic shaft (33) in the inner cavity (32), a spring (37) is arranged on the connecting plate (36), a damper (38) is arranged in the middle of the spring (37), the bottom of the spring (37) is connected with the damper (38), and the top of the damper (38) is connected with the connecting plate (36).

5. The crane damping and buffering device according to claim 4, wherein: the connecting plate (36), the spring (37) and the damper (38) are at least provided with three to four sets.

6. The crane damping and buffering device according to claim 5, wherein: each set of connecting plate (36), the spring (37) and the damper (38) are arranged in a spiral step shape around the telescopic shaft (33).