CN216889852U

CN216889852U - Tower crane's davit

Info

Publication number: CN216889852U
Application number: CN202220527162.0U
Authority: CN
Inventors: 王魁; 张景猛
Original assignee: Jinan Hengqi Construction Machinery Co ltd
Current assignee: Jinan Hengqi Construction Machinery Co ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-07-05
Anticipated expiration: 2032-03-11

Abstract

The utility model discloses a suspension arm of a tower crane, which comprises a fixed arm, wherein the inner side of the fixed arm is provided with a movable arm, four limiting assemblies are jointly installed between the movable arm and the fixed arm, a transmission assembly is fixedly installed on one side of the top of the fixed arm, a driving motor is fixedly installed on one side of the outer surface of the transmission assembly, pushing assemblies are fixedly installed on two sides of the outer surface of the fixed arm and are connected with the transmission assembly, and the two pushing assemblies are connected with the movable arm. According to the utility model, through the arranged driving motor, the transmission component, the limiting component, the movable arm and the pushing component, the extending length of the movable arm can be changed, so that the length of the suspension arm is changed, the suspension arm can cross obstacles in a moving range, and the practicability of the tower crane is improved.

Description

Tower crane's davit

Technical Field

The utility model relates to the technical field of tower cranes, in particular to a suspension arm of a tower crane.

Background

The tower crane is a rotary crane with a movable arm arranged at the upper part of a high tower body. The working range is large, and the method is mainly used for vertical transportation of materials and component installation in multi-storey and high-rise building construction. The device consists of a metal structure, a working mechanism and an electric system. The metal structure comprises a tower body, a movable arm, a base, an attachment rod and the like. The working mechanism has four parts of lifting, amplitude changing, rotating and walking. The electric system comprises a motor, a controller, a power distribution frame, a connecting line, a signal and lighting device and the like;

at present, the length of a suspension arm of a tower crane is basically determined, and in the process of rotating and moving the suspension arm in the air, if an obstacle appears in the moving range of the suspension arm, the suspension arm cannot cross the obstacle, so that the practicability of the tower crane is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a tower crane boom.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a davit of tower crane, includes the fixed arm, the inboard of fixed arm is equipped with the digging arm, install four spacing subassemblies between digging arm and the fixed arm jointly, top one side fixed mounting of fixed arm has drive assembly, surface one side fixed mounting of drive assembly has driving motor, the equal fixed mounting in surface both sides of fixed arm has the promotion subassembly, and promotes and be connected between subassembly and the drive assembly, two promote the subassembly all with the digging arm between be connected.

Furthermore, four spacing subassembly all includes the spout, and fixed connection between spout and the fixed arm, the inside sliding connection of spout has the slide rail, and fixed connection between slide rail and the digging arm has limiting displacement, can guarantee the digging arm steady operation.

Further, drive assembly includes the shell, and fixed connection between shell and the fixed arm, the inside rotation of shell installs the worm, and fixed connection between worm and driving motor's the drive shaft is convenient for transmit the produced kinetic energy of driving motor.

Further, the inside of shell rotates and is connected with the pivot, surface one side fixedly connected with worm wheel of pivot, and the meshing is connected between worm wheel and the worm, the surface both sides of worm wheel all are equipped with first bevel gear, and fixed connection between first bevel gear and the pivot, two the equal meshing of bottom of first bevel gear is connected with second bevel gear, two the equal fixedly connected with transmission shaft in bottom of second bevel gear, and the transmission shaft runs through the inside of shell perpendicularly and extends to the bottom, is favorable to dispersing the produced kinetic energy of driving motor, is convenient for drive two push assembly simultaneously and moves.

Furthermore, two install the bearing jointly between transmission shaft and the shell, have the supporting role, be favorable to the installation of transmission shaft, reduce the transmission shaft simultaneously and rotate the resistance that receives.

Further, two the promotion subassembly all includes the casing, and fixed connection between casing and the fixed arm, the inside symmetry of casing is rotated and is connected with two runners, and fixed connection between runner and the adjacent transmission shaft, two be connected with the belt jointly between the runner, two runner cooperations can drive the belt and rotate.

Further, the belt is close to one side fixedly connected with slide of digging arm, and fixed connection between slide and the digging arm, and the belt can promote the slide and remove when moving to promote the digging arm and remove.

The utility model has the beneficial effects that:

1. when the tower crane is used, the extension length of the movable arm can be changed through the driving motor, the transmission assembly, the limiting assembly, the movable arm and the pushing assembly, so that the length of the suspension arm is changed, the suspension arm can conveniently cross an obstacle in a moving range, and the practicability of the tower crane is improved;

2. when the suspension arm of the tower crane is used, the transmission assembly has performance through the arranged worm gear and worm, the driving motor is not required to be electrified and self-locked all the time, and the use energy consumption is reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a pushing assembly according to the present invention;

fig. 3 is a schematic structural diagram of the transmission assembly of the present invention.

Illustration of the drawings:

1. a fixed arm; 2. a pushing assembly; 21. a housing; 22. a belt; 23. a slide base; 24. a rotating wheel; 31. a chute; 32. a slide rail; 4. a movable arm; 5. a transmission assembly; 51. a second bevel gear; 52. a rotating shaft; 53. a worm gear; 54. a first bevel gear; 55. a drive shaft; 56. a worm; 57. a housing; 6. the motor is driven.

Detailed Description

Fig. 1 shows, relate to a davit of tower crane, including fixed arm 1, the inboard of fixed arm 1 is equipped with digging arm 4, install four spacing subassemblies between digging arm 4 and the fixed arm 1 jointly, top one side fixed mounting of fixed arm 1 has drive assembly 5, surface one side fixed mounting of drive assembly 5 has driving motor 6, the equal fixed mounting in surface both sides of fixed arm 1 has promotion subassembly 2, and promote between subassembly 2 and the drive assembly 5 to be connected, two promotion subassemblies 2 all with the digging arm 4 between be connected.

Four spacing subassemblies all include spout 31, and fixed connection between spout 31 and the fixed arm 1, and the inside sliding connection of spout 31 has slide rail 32, and fixed connection between slide rail 32 and the digging arm 4.

As shown in fig. 2, each of the two pushing assemblies 2 includes a housing 21, and the housing 21 is fixedly connected to the fixing arm 1, two rotating wheels 24 are symmetrically and rotatably connected to the inside of the housing 21, and the rotating wheels 24 are fixedly connected to the adjacent transmission shafts 55, and a belt 22 is commonly connected between the two rotating wheels 24.

A sliding seat 23 is fixedly connected to one side of the belt 22 close to the movable arm 4, and the sliding seat 23 is fixedly connected with the movable arm 4.

As shown in fig. 3, the transmission assembly 5 includes a housing 57, and the housing 57 is fixedly connected with the fixing arm 1, and a worm 56 is rotatably mounted inside the housing 57, and the worm 56 is fixedly connected with the driving shaft of the driving motor 6.

The inside of shell 57 is rotated and is connected with pivot 52, the surface one side fixedly connected with worm wheel 53 of pivot 52, and the meshing is connected between worm wheel 53 and the worm 56, the surface both sides of worm wheel 53 all are equipped with first bevel gear 54, and fixed connection between first bevel gear 54 and the pivot 52, the bottom of two first bevel gears 54 all the meshing is connected with second bevel gear 51, the equal fixedly connected with transmission shaft 55 in bottom of two second bevel gear 51, and transmission shaft 55 runs through the inside of shell 57 perpendicularly and extends to the bottom.

Bearings are commonly mounted between the two drive shafts 55 and the housing 57.

When the boom of the tower crane is used, the driving motor 6 is started, the driving motor 6 drives the worm 56 to rotate, the worm 56 drives the worm wheel 53 to rotate, so as to drive the rotating shaft 52 to rotate, then the second bevel gear 51 is driven to rotate through the first bevel gear 54, the second bevel gear 51 drives the transmission shaft 55 to rotate, so as to drive the adjacent rotating wheels 24 to rotate, the two rotating wheels 24 on the same side are matched to drive the belt 22 to rotate, so as to drive the movable arm 4 to move through the sliding seat 23 until the movable arm 4 extends out of a specified length.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a tower crane's davit, includes fixed arm (1), its characterized in that: the inboard of fixed arm (1) is equipped with digging arm (4), install four spacing subassemblies jointly between digging arm (4) and fixed arm (1), top one side fixed mounting of fixed arm (1) has drive assembly (5), surface one side fixed mounting of drive assembly (5) has driving motor (6), the equal fixed mounting in surface both sides of fixed arm (1) has promotion subassembly (2), and promotes to be connected between subassembly (2) and drive assembly (5), two promote subassembly (2) all with the digging arm (4) between be connected.

2. The boom of a tower crane according to claim 1, characterized in that: four spacing subassembly all includes spout (31), and fixed connection between spout (31) and fixed arm (1), the inside sliding connection of spout (31) has slide rail (32), and fixed connection between slide rail (32) and digging arm (4).

3. The boom of a tower crane according to claim 1, characterized in that: transmission assembly (5) include shell (57), and fixed connection between shell (57) and fixed arm (1), worm (56) are installed in the inside rotation of shell (57), and fixed connection between the drive shaft of worm (56) and driving motor (6).

4. A boom for a tower crane according to claim 3, characterized in that: the inside of shell (57) rotates and is connected with pivot (52), surface one side fixedly connected with worm wheel (53) of pivot (52), and the meshing is connected between worm wheel (53) and worm (56), the surface both sides of worm wheel (53) all are equipped with first bevel gear (54), and fixed connection between first bevel gear (54) and pivot (52), two the bottom of first bevel gear (54) all meshes and is connected with second bevel gear (51), two the equal fixedly connected with transmission shaft (55) in bottom of second bevel gear (51), and transmission shaft (55) run through the inside of shell (57) perpendicularly and extend to the bottom.

5. The boom of a tower crane according to claim 4, characterized in that: and a bearing is arranged between the two transmission shafts (55) and the shell (57) together.

6. The boom of a tower crane according to claim 5, characterized in that: two push away subassembly (2) all include casing (21), and fixed connection between casing (21) and fixed arm (1), the inside symmetry of casing (21) is rotated and is connected with two runners (24), and fixed connection between runner (24) and adjacent transmission shaft (55), two be connected with belt (22) between runner (24) jointly.

7. The boom of a tower crane according to claim 6, characterized in that: one side of the belt (22) close to the movable arm (4) is fixedly connected with a sliding seat (23), and the sliding seat (23) is fixedly connected with the movable arm (4).