CN212581378U

CN212581378U - Small crane

Info

Publication number: CN212581378U
Application number: CN202020463967.4U
Authority: CN
Inventors: 陈忠明; 朱江伟; 周建杰; 张毅; 陆伟; 马晨辉; 邢旻超; 庄天文
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2021-02-23
Anticipated expiration: 2030-04-02

Abstract

The utility model belongs to the technical field of loop wheel machine technique and specifically relates to a small-size loop wheel machine, including base, axis of rotation, davit, power unit includes the casing, at the inside horizontal axis that is provided with of casing, and the both ends of horizontal axis extend to the casing outside, are provided with the coiling dish on the horizontal axis of the outside one of them end horizontal axis of casing, are connected with the motor on the horizontal axis of the outside other end of casing, and the motor is fixed on the casing, is provided with the worm wheel on the inside horizontal axis of casing, and inside still is provided with the worm on the casing, the worm is connected with the worm wheel cooperation, and the tip of worm extends to the casing outside, is provided with the rotation handle on. The utility model provides a small-size loop wheel machine, it can effectively realize loop wheel machine power can be by manpower and the random conversion between electronic through reasonable structural design, and the stability of loop wheel machine is high simultaneously.

Description

Small crane

Technical Field

The utility model belongs to the technical field of loop wheel machine technique and specifically relates to a small-size loop wheel machine.

Background

In the prior art, a crane is driven by a motor to work. However, in some special cases, especially when some equipment such as a rushing boat for emergency rescue is arranged beside a river bank and hoisted into the river, flood disasters and other situations often exist, and a power failure phenomenon often occurs, so that the crane cannot work normally, and emergency rescue operation and the like are seriously affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the technical defects and providing a small crane which can realize manual and electric random switching.

In order to achieve the purpose, the utility model relates to a small crane, which comprises a base, a rotating shaft and a suspension arm, wherein the base is a frame structure buried underground and cast underground by concrete, the upper surface of the base is flush with the ground level, the base is a cylindrical hollow structure, the lower end of the base is fixedly connected with the base through bolts, the upper end and the lower end in the base are respectively provided with a support ring, a bearing is arranged in the support ring, the rotating shaft is arranged in the bearing, the rotating shaft is vertically arranged and extends upwards through the base, the rotating shaft above the base is provided with a rotating shell, the rotating shell is connected with the base in a sliding way, the rotating shell is rotatably connected with the rotating shaft through the bearing, the side wall at the lower end of the rotating shell extends outwards and is connected with a connecting arm, the suspension arm which inclines upwards is arranged, the hoisting device comprises a boom, a power mechanism, a fixed pulley, a steel wire rope, a movable pulley, a winding disc, a plurality of guide wheels, a fixed pulley, a movable pulley, a fixed pulley, a movable rope and a hoisting rope, wherein the power mechanism is arranged at the end part of the lower end of the boom; a shaft hole is formed in the rotating shell corresponding to the upper end of the rotating shaft, the top end of the rotating shaft is positioned in a bearing arranged in the shaft hole, a support column is arranged in the shaft hole, the lower end of the support column is connected with the top end of the rotating shaft, the lower end of the support column is fixedly connected with the rotating shell, and a diagonal draw bar is arranged between the top of the support column and the middle upper end of the suspension arm; the power mechanism comprises a shell, a horizontal shaft is arranged in the shell, two ends of the horizontal shaft extend to the outside of the shell, a winding disc is arranged on the horizontal shaft at one end of the outside of the shell, a motor is connected to the horizontal shaft at the other end of the outside of the shell, the motor is fixed on the shell, a worm wheel is arranged on the horizontal shaft in the shell, a worm is further arranged in the shell, the worm is connected with the worm wheel in a matched mode, the end portion of the worm extends to the outside of the shell, and a rotating handle is arranged on the worm outside the shell.

Above-mentioned technical scheme buries the base underground and utilizes the concrete to fix the base, then unable adjustment base on the base, the design of the inside support ring of base can inject the axis of rotation inside the support ring to set up the rotation casing in the axis of rotation of upper end, thereby promote the pivoted stability of rotation casing, the davit can be ensured along with rotating the casing and rotate on axis of rotation and base to the design of linking arm and davit. Simultaneously, a supporting column is arranged at the top of the rotating shell, and an inclined pull rod is arranged between the supporting column and the suspension arm, so that the stability of the suspension arm can be effectively improved. Simultaneously in the normal use process, the top of support column can bear great pulling force, so must cause the support column to have certain slope, and adopt support column and axis of rotation mutual independence among this technical scheme, and all fix on rotating the casing, both can guarantee the stability of support column and to the pulling force of davit, even also can not cause the influence to the axis of rotation when the support column takes place certain slope, ensure the use of axis of rotation normal moreover to make the stability of whole davit in the rotation process. In addition, for the power mechanism, a worm wheel is arranged on a horizontal shaft, a worm is arranged in a matched mode, the motor is in transmission connection with the horizontal shaft, the motor can be used for driving the winding disc to rotate through the horizontal shaft under the normal condition, electric lifting is achieved, under the special condition that power is cut off, the worm can be driven by the rotating handle to rotate, the worm drives the worm wheel and the horizontal shaft to rotate, the winding disc is rotated, and manual lifting is achieved; meanwhile, the combination of the worm gear and the worm can realize self-locking without a braking device in the lifting process, so that the device is practical, more convenient, safe and reliable.

The top of the supporting column is connected with a rotating part through a bearing, a plurality of inhaul cables are arranged on the rotating part, and the other ends of the inhaul cables are fixed on the ground. The design of this structure through the design that rotates, realizes pulling to the support column of cable, and stability is high, and the support column rotates the in-process along with rotating the casing, can not cause the cable to rotate safe and reliable.

The lower surface of the connecting arm is provided with a supporting wheel, the lower end of the supporting wheel is in contact with the upper surface of the base, and the axial direction of the supporting wheel is perpendicular to the axial direction of the rotating shaft. The structure can enable the connecting arm to be supported on the base more comprehensively, and the fulcrum is closer to the center, so that the stability of the suspension arm is higher.

The utility model provides a small-size loop wheel machine, it can effectively realize loop wheel machine power can be by manpower and the random conversion between electronic through reasonable structural design, and the stability of loop wheel machine is high simultaneously.

Drawings

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

FIG. 2 is a schematic view of the connection structure of the base, the base and the rotating housing according to the present invention;

fig. 3 is a schematic structural diagram of the power mechanism of the present invention.

Detailed Description

The invention is further described by the following embodiments in conjunction with the accompanying drawings.

Example 1:

as shown in fig. 1, 2 and 3, the small crane described in this embodiment includes a base 1, a base 2, a rotating shaft 5 and a suspension arm 7, wherein the base 1 is a frame structure buried underground and poured underground by concrete, the upper surface of the base 1 is flush with the ground level, the base 2 is a cylindrical hollow structure, the lower end of the base 2 is fixedly connected with the base 1 by bolts, support rings 3 are respectively arranged at the upper end and the lower end inside the base 2, bearings are arranged inside the support rings 3, the rotating shaft 5 is arranged inside the bearings, the rotating shaft 5 is vertically arranged and extends upwards through the base 2, a rotating housing 4 is arranged on the rotating shaft 5 above the base 2, the rotating housing 4 is slidably connected with the base 2, the rotating housing 4 is rotatably connected with the rotating shaft 5 by bearings, a connecting arm 6 extends outwards from the side wall of the lower end of the rotating housing 4, the ship lifting device is characterized in that a lifting arm 7 which inclines upwards is arranged on a connecting arm 6, a power mechanism 8 is arranged at the lower end part of the lifting arm 7, a winding disc 86 is arranged on the power mechanism 8, a plurality of guide wheels 9 are arranged on the lifting arm 7 at intervals, a fixed pulley 10 is arranged at the top part of the lifting arm 7, a steel wire 17 is fixed on the winding disc 86, the steel wire 17 passes through the guide wheels 9 and then bypasses the fixed pulley 10, a movable pulley 11 is wound on the steel wire 17 below the fixed pulley 10, the end part of the steel wire 17 bypasses the movable pulley 11 and then is fixed at the top part of the lifting arm 7, and a sling 12 for lifting a ship is arranged on the movable; a shaft hole is formed in the rotating shell 4 corresponding to the upper end of the rotating shaft 5, the top end of the rotating shaft 5 is located in a bearing arranged in the shaft hole, a support column 13 is arranged in the shaft hole, the lower end of the support column 13 is connected with the top end of the rotating shaft 5, the lower end of the support column 13 is fixedly connected with the rotating shell 4, and a diagonal draw bar 14 is arranged between the top of the support column 13 and the upper middle end of the suspension arm 7; the power mechanism 8 comprises a housing 81, a horizontal shaft 82 is arranged in the housing 81, two ends of the horizontal shaft 82 extend to the outside of the housing 81, a winding disc 86 is arranged on the horizontal shaft 82 at one end of the outside of the housing 81, a motor 87 is connected to the horizontal shaft 82 at the other end of the outside of the housing 81, the motor 87 is fixed on the housing 81, a worm wheel 83 is arranged on the horizontal shaft 82 in the housing 81, a worm 84 is further arranged in the housing 81, the worm 84 is connected with the worm wheel 83 in a matched mode, the end portion of the worm 84 extends to the outside of the housing 81, and a rotating handle 85 is arranged on the worm 84 outside the housing 81.

The top end of the supporting column 13 is connected with a rotating piece 15 through a bearing, a plurality of pull cables 16 are arranged on the rotating piece 15, and the other ends of the pull cables 16 are fixed on the ground.

A support wheel 18 is arranged on the lower surface of the connecting arm 6, the lower end of the support wheel 18 is in contact with the upper surface of the base 2, and the axial direction of the support wheel 18 is perpendicular to the axial direction of the rotating shaft 5.

Claims

1. A small-size loop wheel machine, characterized by: the lifting device comprises a base, a rotating shaft and a suspension arm, wherein the base is of a frame structure buried underground and poured underground by utilizing concrete, the upper surface of the base is flush with the ground level, the base is of a cylindrical hollow structure, the lower end of the base is fixedly connected with the base through bolts, support rings are respectively arranged at the upper end and the lower end in the base, bearings are arranged in the support rings, the rotating shaft is arranged in the bearings, the rotating shaft is vertically arranged and penetrates through the base to extend upwards, a rotating shell is arranged on the rotating shaft above the base, the rotating shell is connected with the base in a sliding manner, the rotating shell is rotatably connected with the rotating shaft through the bearings, a connecting arm extends outwards from the side wall at the lower end of the rotating shell, the suspension arm which inclines upwards is arranged on the connecting arm, a power mechanism is arranged at, the suspension arm is provided with a plurality of guide wheels at intervals, the top of the suspension arm is provided with a fixed pulley, a steel wire rope is fixed on a winding disc, the steel wire rope passes through the guide wheels and then bypasses the fixed pulley, a movable pulley is wound on the steel wire rope below the fixed pulley, the end part of the steel wire rope bypasses the movable pulley and then is fixed at the top of the suspension arm, and a sling for hoisting a ship is arranged on the movable pulley; a shaft hole is formed in the rotating shell corresponding to the upper end of the rotating shaft, the top end of the rotating shaft is positioned in a bearing arranged in the shaft hole, a support column is arranged in the shaft hole, the lower end of the support column is connected with the top end of the rotating shaft, the lower end of the support column is fixedly connected with the rotating shell, and a diagonal draw bar is arranged between the top of the support column and the middle upper end of the suspension arm; the power mechanism comprises a shell, a horizontal shaft is arranged in the shell, two ends of the horizontal shaft extend to the outside of the shell, a winding disc is arranged on the horizontal shaft at one end of the outside of the shell, a motor is connected to the horizontal shaft at the other end of the outside of the shell, the motor is fixed on the shell, a worm wheel is arranged on the horizontal shaft in the shell, a worm is further arranged in the shell, the worm is connected with the worm wheel in a matched mode, the end portion of the worm extends to the outside of the shell, and a rotating handle is arranged on the worm outside the shell.

2. The small crane of claim 1, further comprising: the top of the supporting column is connected with a rotating part through a bearing, a plurality of inhaul cables are arranged on the rotating part, and the other ends of the inhaul cables are fixed on the ground.

3. The small crane of claim 1, further comprising: the lower surface of the connecting arm is provided with a supporting wheel, the lower end of the supporting wheel is in contact with the upper surface of the base, and the axial direction of the supporting wheel is perpendicular to the axial direction of the rotating shaft.