CN215048117U

CN215048117U - Protection device for ensuring vertical lifting of travelling crane

Info

Publication number: CN215048117U
Application number: CN202121564823.9U
Authority: CN
Inventors: 陈永军; 毛敏; 徐国忠; 刘辉
Original assignee: Ningbo Xinglun Steel Wire Co ltd
Current assignee: Ningbo Xinglun Steel Wire Co ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2021-12-07
Anticipated expiration: 2031-07-09

Abstract

The utility model relates to a hoisting accessory field. The purpose is to provide a protection device for ensuring vertical hoisting of a travelling crane, and the device can prevent workers from obliquely hoisting when hoisting heavy objects so as to eliminate potential safety hazards. The technical scheme is as follows: the protection device for ensuring the vertical lifting of the travelling crane comprises a travelling crane main beam, an electric hoist arranged on the travelling crane main beam, a steel wire rope, a power supply and a controller, wherein one end of the steel wire rope is wound on the electric hoist, and the other end of the steel wire rope is suspended to lift a heavy object; the method is characterized in that: a steel pipe sleeved on the periphery of the steel wire rope is vertically fixed at the bottom of the electric hoist; the steel pipe is provided with a plurality of contact switches; the electric hoist, the power supply and the contact switches are respectively and electrically connected with the controller.

Description

Protection device for ensuring vertical lifting of travelling crane

Technical Field

The utility model relates to a hoisting accessory field specifically is a ensure protection device that driving was lifted by crane perpendicularly.

Background

The traveling crane is a common hoisting device, and the operating specification thereof has requirements: during hoisting, the hoisting steel wire rope passes through the gravity center of the hoisted object and keeps vertical. However, in the operation process of workers, irregular operation of the inclined crane often exists, so that the steel wire rope is broken due to overload, and a heavy object swings to impact objects and people, so that personal and equipment accidents are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of above-mentioned background art, provide a protection device who ensures that the driving lifts by crane perpendicularly, the device should be able to prevent that the workman from taking place to hang to one side when lifting by crane the heavy object to eliminate the potential safety hazard.

The utility model provides a technical scheme is:

the protection device for ensuring the vertical lifting of the travelling crane comprises a travelling crane main beam, an electric hoist arranged on the travelling crane main beam, a steel wire rope, a power supply and a controller, wherein one end of the steel wire rope is wound on the electric hoist, and the other end of the steel wire rope is suspended to lift a heavy object; the method is characterized in that: a steel pipe sleeved on the periphery of the steel wire rope is vertically fixed at the bottom of the electric hoist; the steel pipe is provided with a plurality of contact switches; the electric hoist, the power supply and the contact switches are respectively and electrically connected with the controller.

All contact switches are uniformly distributed at the lower end of the steel pipe in an annular shape, so that the steel wire rope can touch the contact switches when the steel wire rope is obliquely hung at any angle.

The steel pipe adopts scalable steel pipe to the different jack-up height of adaptation heavy object.

The utility model has the advantages that:

in the process of hoisting heavy objects, if the steel wire rope is obliquely hoisted, the steel wire rope can touch the contact switch at the lower end of the steel pipe, and the power supply is cut off through the controller, so that the electric hoist stops working, the oblique hoisting operation of the steel wire rope is avoided from the source, and the potential safety hazard is eliminated; in addition, the device has simple structure and low cost, and is suitable for popularization and application.

Drawings

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

Reference numerals:

1. a main beam of the traveling crane; 2. an electric hoist; 3. a steel pipe; 4. a contact switch; 5. a wire rope; 6. and (4) a lifting hook.

Detailed Description

The following further description is made with reference to the embodiments shown in the drawings.

The protection device for ensuring the vertical hoisting of the travelling crane shown in fig. 1 comprises a travelling crane main beam 1, an electric hoist 2, a steel wire rope 5, a power supply (not shown in the figure) and a controller (not shown in the figure). The main beam of the travelling crane is horizontally arranged; the electric hoist is installed on the driving main beam, and the electric hoist can horizontally move along the driving main beam. One end of the steel wire rope is wound on the electric hoist, and the other end of the steel wire rope is hung and fixed with a lifting hook 6 so as to lift a heavy object; when the electric hoist works, the electric hoist drives the steel wire rope to wind and unwind. The power supply provides working voltage for the electric hoist. The structure is the same as the existing travelling crane structure. The utility model discloses an improvement part lies in:

the bottom of the electric hoist is vertically fixed with a steel pipe 3, and the suspended end of the steel wire rope penetrates through the steel pipe, so that the steel pipe is sleeved on the periphery of the steel wire rope. Preferably, the steel pipe is a telescopic steel pipe to adapt to different lifting heights of the heavy object.

The steel pipe is provided with a plurality of contact switches; preferably, all the contact switches are uniformly distributed at the pipe orifice at the lower end of the steel pipe in an annular shape; the number of the contact switches is determined by the thickness of the steel wire rope and the outer diameter of the steel pipe, so that the steel wire rope can touch the contact switches when the steel wire rope is obliquely hung at any angle.

The electric hoist, the power supply and the contact switches are respectively and electrically connected with the controller.

All the components can be obtained by outsourcing.

The working principle of the utility model is as follows:

in the process of lifting heavy objects by workers, if the steel wire rope is obliquely lifted, the steel wire rope can touch the contact switch at the lower end of the steel pipe, the contact switch transmits signals to the controller, and the controller cuts off a power supply to stop the electric hoist, so that the oblique lifting operation of the steel wire rope is avoided from the source, and potential safety hazards are eliminated.

Claims

1. The protection device for ensuring the vertical lifting of the travelling crane comprises a travelling crane main beam (1), an electric hoist (2) arranged on the travelling crane main beam, a steel wire rope (5) with one end wound on the electric hoist and the other end suspended to lift a heavy object, a power supply for providing working voltage for the electric hoist and a controller; the method is characterized in that: a steel pipe (3) sleeved on the periphery of the steel wire rope is vertically fixed at the bottom of the electric hoist; a plurality of contact switches (4) are arranged on the steel pipe; the electric hoist, the power supply and the contact switches are respectively and electrically connected with the controller.

2. A protection device to ensure vertical crane lifting according to claim 1, characterized in that: all contact switches are uniformly distributed at the lower end of the steel pipe in an annular shape, so that the steel wire rope can touch the contact switches when the steel wire rope is obliquely hung at any angle.

3. A protection device to ensure vertical crane lifting according to claim 1, characterized in that: the steel pipe adopts scalable steel pipe to the different jack-up height of adaptation heavy object.