CN112520605A

CN112520605A - Large-scale mechanical crane boom

Info

Publication number: CN112520605A
Application number: CN202011420318.7A
Authority: CN
Inventors: 赵世乾; 杨征
Original assignee: ANHUI SANSHAN MACHINERY MANUFACTURING CO LTD
Current assignee: ANHUI SANSHAN MACHINERY MANUFACTURING CO LTD
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-03-19

Abstract

The invention discloses a large-scale mechanical crane boom, which belongs to a hoisting device and comprises a base and a rotary table, wherein the middle part of the base is fixedly connected with a first motor, the left side of the upper surface of the rotary table is fixedly connected with a large arm, the top of the large arm is rotatably connected with a small arm, the left end part of the small arm is rotatably connected with a hoisting head, the bottom side of the hoisting head is provided with a pulley hook, the right side of the upper surface of the rotary table is fixedly connected with a support, the top of the support is rotatably connected with a roller, the front side of the roller is fixedly connected with a driven bevel gear, the left side of the roller is provided with a second motor, and the right end part of the: the lifting device is simple in structure and convenient to use, the hydraulic support rod is erected in the middle of the large arm to support the small arm to lift, the steel wire rope is arranged on the pulley hook and connected with the roller, the lifting weight range of a mechanical crane arm is greatly enlarged, and the motor and the rotating shaft sleeve are arranged in the base and the rotating platform, so that the lifting and transferring work of heavy objects in any direction can be realized.

Description

Large-scale mechanical crane boom

Technical Field

The invention relates to a hoisting device, in particular to a large mechanical crane boom.

Background

The crane refers to a multi-action crane for vertically lifting and horizontally carrying heavy objects within a certain range. Also known as crown blocks, navigation cranes and cranes. The hoisting equipment has the working characteristics of intermittent movement, namely corresponding mechanisms for taking materials, transporting, unloading and the like in one working cycle alternately work, so that the development and the use of the crane on the market are more and more extensive. In order to ensure the operation safety, the lifting operation without landing legs is basically forbidden in China at present. The crane is matched with steel wire ropes of various types including phosphated coated steel wire ropes, galvanized steel wire ropes and polished steel wire ropes.

The crane boom supports a hoisting rope, a fetching device or a metal structural member bent in two directions of the amplitude variation trolley. The connecting pin shaft, the steel wire rope or the hydraulic cylinder are supported on a rotary table or a tower body of the crane. For a cargo boom which can swing in a pitching way, the inclination angle of the cargo boom is changed by a luffing mechanism so as to change the amplitude and the lifting height of the crane; the horizontal jib is changed in amplitude by using a luffing trolley to move back and forth on the jib, but the existing jib wall is also limited by the hoisting weight and has the problem of small amplitude in the hoisting direction, so that a large mechanical jib is provided by the technical personnel in the field to solve the problems in the background art.

Disclosure of Invention

The invention aims to provide a large mechanical crane boom to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a large-scale machinery jib loading boom, includes base and revolving stage, No. one motor of base middle part fixedly connected with, No. one motor output shaft tip adopts fixed connection bottom the revolving stage, revolving stage upper surface left side fixedly connected with big arm, big arm top are rotated and are connected with the forearm, and forearm left end portion rotates and connects the hoisting head, the hoisting head bottom side is equipped with the pulley couple, revolving stage upper surface right side fixedly connected with support, support top are rotated and are connected the gyro wheel, and gyro wheel front side fixedly connected with driven bevel gear, the gyro wheel left side is equipped with No. two motors, and No. two motors pass through unable adjustment base and revolving stage fixed connection, No. two motor right-hand member fixedly connected with initiative bevel gear, initiative bevel gear and driven bevel gear cooperation are connected.

As a further scheme of the invention: the middle part of the big arm is fixedly connected with a hydraulic support rod.

As a still further scheme of the invention: the right end part of the hydraulic support rod is rotatably connected with the middle part of the small arm.

As a still further scheme of the invention: and a steel wire rope is wound outside the roller.

As a still further scheme of the invention: the pulley hook is connected with the roller through a steel wire rope.

As a still further scheme of the invention: and a rotating shaft sleeve is arranged between the base and the rotating platform.

Compared with the prior art, the invention has the beneficial effects that: the lifting device is simple in structure and convenient to use, the hydraulic support rod is erected in the middle of the large arm to support the small arm to lift, the steel wire rope is arranged on the pulley hook and connected with the roller, the lifting weight range of a mechanical crane arm is greatly enlarged, the motor and the rotating shaft sleeve are arranged in the base and the rotating platform, the lifting and transferring work of heavy objects in any direction can be realized, and the lifting device is worthy of popularization.

Drawings

Fig. 1 is a schematic structural diagram of a large machine boom.

Fig. 2 is a partially enlarged view of a roller, a drive bevel gear and a driven bevel gear in a boom of a large machinery.

Fig. 3 is a schematic structural diagram of a roller and a driven bevel gear in a large mechanical boom.

In the figure: the device comprises a base 1, a rotating platform 2, a motor 3, a large arm 4, a small arm 5, a hoisting head 6, a pulley hook 7, a support 8, rollers 9, driven bevel gears 10, a motor 11, a fixed base 12, driving bevel gears 13, hydraulic supporting rods 14, steel wire ropes 15 and a rotating shaft sleeve 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, in an embodiment of the present invention, a large machine boom includes a base 1 and a rotating table 2, the middle part of the base 1 is fixedly connected with a first motor 3, the end part of an output shaft of the first motor 3 is fixedly connected with the bottom of the rotating platform 2, the left side of the upper surface of the rotating platform 2 is fixedly connected with a large arm 4, the top of the large arm 4 is rotatably connected with a small arm 5, the left end part of the small arm 5 is rotatably connected with a hoisting head 6, a pulley hook 7 is arranged at the bottom side of the hoisting head 6, a bracket 8 is fixedly connected at the right side of the upper surface of the rotating platform 2, the top of the bracket 8 is rotatably connected with a roller 9, a driven bevel gear 10 is fixedly connected at the front side of the roller 9, a second motor 11 is arranged on the left side of the roller 9, the second motor 11 is fixedly connected with the rotating table 2 through a fixed base 12, a driving bevel gear 13 is fixedly connected to the right end portion of the second motor 11, and the driving bevel gear 13 is connected with a driven bevel gear 10 in a matched mode;

when the lifting device is used, a power supply is connected, the first motor 3 is started, an output shaft of the first motor 3 rotates to drive the rotating platform 2 to rotate, the rotating platform 2 rotates to a required lifting direction, the second motor 11 is started, an output shaft of the second motor 11 rotates to drive the driving bevel gear 13 to rotate, the driving bevel gear 13 rotates to drive the driven bevel gear 10 to rotate, so that the roller 9 is driven to rotate, the roller 9 rotates to drive the steel wire rope 15 to be discharged, so that the pulley hook 7 is driven to move downwards, when the pulley hook 7 hooks a heavy object, the second motor 11 rotates reversely to drive the roller 9 to rotate reversely, so that the steel wire rope 15 is tightened, the steel wire rope 15 drives the pulley hook 7 to move upwards, and meanwhile, the hydraulic support rod 14 extends to drive.

The middle part of the big arm 4 is fixedly connected with a hydraulic support rod 14.

The right end part of the hydraulic support rod 14 is rotatably connected with the middle part of the small arm 5.

A steel wire rope 15 is wound outside the roller 9.

The pulley hook 7 is connected with the roller 9 through a steel wire rope 15.

A rotary shaft sleeve 16 is arranged between the base 1 and the rotary table 2.

The working principle of the invention is as follows: when the lifting device is used, a power supply is connected, the first motor 3 is started, an output shaft of the first motor 3 rotates to drive the rotating platform 2 to rotate, the rotating platform 2 rotates to a required lifting direction, the second motor 11 is started, an output shaft of the second motor 11 rotates to drive the driving bevel gear 13 to rotate, the driving bevel gear 13 rotates to drive the driven bevel gear 10 to rotate, so that the roller 9 is driven to rotate, the roller 9 rotates to drive the steel wire rope 15 to be discharged, so that the pulley hook 7 is driven to move downwards, when the pulley hook 7 hooks a heavy object, the second motor 11 rotates reversely to drive the roller 9 to rotate reversely, so that the steel wire rope 15 is tightened, the steel wire rope 15 drives the pulley hook 7 to move upwards, and meanwhile, the hydraulic support rod 14 extends to drive.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a large-scale mechanical crane boom, includes base (1) and revolving stage (2), No. one motor (3) of base (1) middle part fixedly connected with, No. one motor (3) output shaft tip adopts fixed connection bottom revolving stage (2), its characterized in that, revolving stage (2) upper surface left side fixedly connected with big arm (4), big arm (4) top is rotated and is connected with forearm (5), and forearm (5) left end portion rotates and connects hoisting head (6), hoisting head (6) bottom side is equipped with pulley couple (7), revolving stage (2) upper surface right side fixedly connected with support (8). Support (8) top is rotated and is connected gyro wheel (9), gyro wheel (9) front side fixedly connected with driven bevel gear (10), gyro wheel (9) left side is equipped with No. two motor (11), and No. two motor (11) pass through fixed baseplate (12) and revolving stage (2) fixed connection, and No. two motor (11) right-hand member portion fixedly connected with initiative bevel gear (13), initiative bevel gear (13) and driven bevel gear (10) cooperation are connected.

2. A large machine boom according to claim 1, characterized in that a hydraulic strut (14) is fixedly connected to the middle of the large boom (4).

3. A large machine boom according to claim 1 or 2, characterized in that the right end of the hydraulic strut (14) is pivotally connected to the middle of the small arm (5).

4. A large machine boom according to claim 1, characterized in that the rollers (9) are externally wound with wire ropes (15).

5. A large machine boom according to claim 1 or 4, characterized in that the sheave hitch (7) is connected to the roller (9) by means of a wire rope (15).

6. A large machine boom according to claim 1, characterized in that a rotating sleeve (16) is provided between the base (1) and the rotating table (2).