CN210855043U

CN210855043U - Traction mechanism of tower crane

Info

Publication number: CN210855043U
Application number: CN201921544888.XU
Authority: CN
Inventors: 薛居孝; 李春雷; 薛军
Original assignee: Zibo City Huantai Lifting Machinery Factory
Current assignee: Zibo City Huantai Lifting Machinery Factory
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-06-26
Anticipated expiration: 2029-09-17

Abstract

The utility model discloses a tower crane traction mechanism, it is installed on tower crane's swing arm, including pulling support, mount pad, connecting seat, chain sling and being used for driving the drive unit who pulls the support motion, drive unit includes first motor and first lead screw, the connecting seat rotates with the mount pad through the pivot to be connected, still including the regulating unit, the regulating unit includes second motor, second lead screw, interior thread bush, first connecting rod, second connecting rod and sleeve, this application is equipped with pulls support, mount pad, connecting seat, chain sling and is used for driving the drive unit who pulls the support motion, makes full use of the auto-lock performance of screw thread, makes in the removal process, keeps stationarity and accuracy, can rotate relative mount pad through the connecting seat, can prevent in the handling process that the chain sling twines and ties; be equipped with the regulating unit, can adjust the handling angle of chain sling, the better adaptation of the article of isostructure, size of being convenient for has improved handling efficiency.

Description

Traction mechanism of tower crane

Technical Field

The utility model relates to a hoist technical field specifically is a tower crane drive mechanism.

Background

Tower cranes are also called tower cranes.

The utility model discloses a chinese utility model discloses a drive mechanism, this drive mechanism sets up on tower coin machine's swing arm, this drive mechanism is including pulling the frame, this pull frame both sides lateral wall is equipped with the roll gear, wheel and tooth's socket are breathed forward mutually and are closed in the roll, be equipped with the rotation motor on pulling the support, it is connected with the gear to rotate the motor, the bottom of pulling the frame is equipped with the chain sling, the tractor bottom is equipped with slewer, the chain sling is connected with slewer, but rotate the motor through the installation, the meshing of wheel and rack drives and pulls the frame motion, the structure is complicated relatively, and it is when outage or other circumstances, the auto-lock performance is relatively poor, the security can not obtain better guarantee.

SUMMERY OF THE UTILITY MODEL

An embodiment aim at provides a tower crane drive mechanism to solve above-mentioned problem.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a tower crane drive mechanism, its installs on tower crane's swing arm, including pulling support, mount pad, connecting seat, chain sling and being used for the drive to pull the drive unit of support motion, pull the support movable sleeve and locate on the swing arm, pull support bottom fixed mounting and have the mount pad, the connecting seat is installed in the rotation of mount pad below, many chain slings are installed to connecting seat bottom hoop equidistance, drive unit includes first motor and first lead screw, first lead screw rotates and installs on the swing arm, first lead screw runs through and pulls the support and rather than threaded connection, first motor drive connects first lead screw, and first motor is installed on the swing arm, the connecting seat rotates through pivot and mount pad to be connected, and the pivot top is equipped with the bulge loop, is equipped with in the mount pad with bulge loop complex recess.

In one alternative: the traction bracket is a cuboid frame with openings at two ends.

In one alternative: first lead screws are arranged on the traction support and located on the upper side and the lower side of the movable arm.

In one alternative: and a T-shaped sliding block is fixed on one of the connecting seat and the mounting seat, and an annular T-shaped groove for the T-shaped sliding block to slide is formed in the other one of the connecting seat and the mounting seat.

In one alternative: still including the regulating unit, the regulating unit includes second motor, second lead screw, internal thread cover, first connecting rod, second connecting rod and sleeve, the second motor is installed in the connecting seat, and first motor drive connects the second lead screw, and the second lead screw rotates with the connecting seat to be connected, threaded sleeve is equipped with the internal thread cover on the second lead screw, it has many first connecting rods to articulate on the internal thread cover outer wall, connecting seat bottom hoop equidistance articulates there is many second connecting rods, and the quantity homogeneous phase of second connecting rod, first connecting rod and chain sling equals and the one-to-one, and the second connecting rod other end articulates there is the sleeve, the chain sling is outside to the sleeve cover, the one end that the internal thread cover was kept away from to first connecting rod is articulated with the second connecting rod.

Compared with the prior art, the embodiment of the utility model has the following beneficial effects:

1. the lifting device is provided with a traction support, a mounting seat, a connecting seat, a lifting chain and a driving unit for driving the traction support to move, wherein the driving unit comprises a first motor and a first lead screw, the first lead screw is driven to rotate by the first motor, the first lead screw drives the traction support to move along a movable arm, and the self-locking performance of threads is fully utilized, so that the stability and the accuracy are kept in the moving process, the structure is simple, the safety is higher, the connecting seat is rotationally connected with the mounting seat through a rotating shaft, and the connecting seat can rotate relative to the mounting seat, so that the lifting chain can be prevented from being wound and knotted in the lifting process;

2. be equipped with the regulating unit, the regulating unit includes second motor, the second lead screw, the internal thread cover, first connecting rod, second connecting rod and sleeve, the second motor drives the second lead screw and rotates, the second lead screw drives the internal thread cover and removes, the internal thread cover drives the motion of second connecting rod through first connecting rod, the second connecting rod passes through the sleeve and drives the chain sling motion, on the one hand, can prevent the chain sling winding from knoing better, on the other hand, can adjust the handling angle of chain sling, be convenient for better adaptation different structure, the article of size, the handling efficiency has been improved.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a driving unit according to a first embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a second embodiment of the present invention.

Notations for reference numerals: 1-movable arm, 2-first motor, 3-first screw rod, 4-traction bracket, 5-mounting seat, 6-T-shaped sliding block, 7-rotating shaft, 8-connecting seat, 9-sling chain, 10-second motor, 11-sleeve, 12-second screw rod, 13-internal thread sleeve, 14-first connecting rod and 15-second connecting rod.

Detailed Description

The present invention will be described in detail with reference to the following embodiments, wherein like or similar elements are designated by like reference numerals throughout the drawings or description, and wherein the shape, thickness or height of the various elements may be expanded or reduced in practical applications. The embodiments of the present invention are provided only for illustration, and not for limiting the scope of the present invention. Any obvious and obvious modifications or alterations to the present invention can be made without departing from the spirit and scope of the present invention.

Example 1

Referring to fig. 1-2, in an embodiment of the present invention, a traction mechanism of a tower crane is installed on a movable arm 1 of the tower crane, and includes a traction bracket 4, a mounting seat 5, a connecting seat 8, a hoist chain 9, and a driving unit for driving the traction bracket 4 to move, wherein the traction bracket 4 is movably sleeved on the movable arm 1, in this embodiment, the traction bracket 4 is a rectangular frame with two open ends, the mounting seat 5 is fixedly installed at the bottom of the traction bracket 4, the connecting seat 8 is rotatably installed below the mounting seat 5, a plurality of hoist chains 9 are installed at the bottom of the connecting seat 8 in an annular equidistant manner, the driving unit includes a first motor 2 and a first lead screw 3, the first lead screw 3 is rotatably installed on the movable arm 1, the first lead screw 3 penetrates through the traction bracket 4 and is in threaded connection with the traction bracket 4, and further, in order to ensure better stability, the first lead screws 3 are installed on the traction bracket 4 and on both upper and lower, the first motor 2 is connected with the first lead screw 3 in a driving manner, in this embodiment, an output shaft of the first motor 2 is preferably fixedly connected with an end portion of the first lead screw 3 through a coupler, the first motor 2 is installed on the movable arm 1, the first lead screw 3 is driven to rotate through the first motor 2, the first lead screw 3 drives the traction bracket 4 to move along the movable arm 1, and self-locking performance of threads is fully utilized, so that stability and accuracy are kept in a moving process, the structure is simple, safety is higher, further, the connecting base 8 is rotationally connected with the mounting base 5 through the rotating shaft 7, a convex ring is arranged at the top end of the rotating shaft 7, a groove matched with the convex ring is formed in the mounting base 5, connection firmness is improved, a T-shaped sliding block 6 is fixed on one of the connecting base 8 and the mounting base 5, and an annular T-shaped groove for the T-shaped sliding block 6 to slide is formed in the other of the connecting base 8 and the, the connecting seat 8 can rotate relative to the mounting seat 5, so that the hanging chain 9 can be prevented from being wound and knotted in the hoisting process.

Example 2

Referring to fig. 3, the embodiment of the present invention is different from embodiment 1 in that the present invention further includes an adjusting unit, the adjusting unit includes a second motor 10, a second lead screw 12, an internal thread sleeve 13, a first connecting rod 14, a second connecting rod 15 and a sleeve 11, the second motor 10 is installed in the connecting seat 8, the first motor 2 is connected to the second lead screw 12 in a driving manner, the second lead screw 12 is rotatably connected to the connecting seat 8, the internal thread sleeve 13 is sleeved on the second lead screw 12 in a threaded manner, a plurality of first connecting rods 14 are hinged to the outer wall of the internal thread sleeve 13, a plurality of second connecting rods 15 are hinged to the bottom of the connecting seat 8 in an annular direction at equal intervals, the number of the second connecting rods 15, the number of the first connecting rods 14 and the number of the sling chains 9 are equal and are in one-to-one correspondence, the other end of the second connecting rod 15 is hinged to the sleeve 11, the sleeve 11 is sleeved outside the sling chain 9, one end of, start second motor 10, second motor 10 drives second lead screw 12 and rotates, second lead screw 12 drives internal thread cover 13 and removes, internal thread cover 13 drives the motion of second connecting rod 15 through first connecting rod 14, second connecting rod 15 drives the chain sling 9 motion through sleeve 11, on the one hand, can prevent better the chain sling 9 winding to tie a knot, on the other hand, can adjust the handling angle of chain sling 9, be convenient for better adaptation different structure, the article of size, handling efficiency has been improved.

The utility model discloses a theory of operation is: when the utility model is used, the first motor 2 drives the first lead screw 3 to rotate, the first lead screw 3 drives the traction support 4 to move along the movable arm 1, the self-locking performance of the thread is fully utilized, thereby the stability and the accuracy are kept in the moving process, the structure is simple, the safety is higher, the connecting seat 8 can rotate relative to the mounting seat 5, thereby the hanging chain 9 can be prevented from being wound and knotted in the lifting process, the second motor 10 drives the second lead screw 12 to rotate, the second lead screw 12 drives the inner thread sleeve 13 to move, the inner thread sleeve 13 drives the second connecting rod 15 to move through the first connecting rod 14, the second connecting rod 15 drives the hanging chain 9 to move through the sleeve 11, on one hand, the hanging chain 9 can be better prevented from being wound and knotted, on the other hand, the lifting angle of the hanging chain 9 can be adjusted, thereby being convenient for better adapting to articles with different structures and sizes, the lifting efficiency is improved.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A traction mechanism of a tower crane is arranged on a movable arm (1) of the tower crane and comprises a traction support (4), a mounting seat (5), a connecting seat (8), a sling chain (9) and a driving unit for driving the traction support (4) to move, and is characterized in that the traction support (4) is movably sleeved on the movable arm (1), the bottom of the traction support (4) is fixedly provided with the mounting seat (5), the connecting seat (8) is rotatably arranged below the mounting seat (5), a plurality of sling chains (9) are arranged at the bottom of the connecting seat (8) in an annular and equidistant manner, the driving unit comprises a first motor (2) and a first lead screw (3), the first lead screw (3) is rotatably arranged on the movable arm (1), the first lead screw (3) penetrates through the traction support (4) and is in threaded connection with the traction support, the first motor (2) is in driving connection with the first lead screw (3), first motor (2) are installed on swing arm (1), connecting seat (8) are rotated through pivot (7) and mount pad (5) and are connected, and pivot (7) top is equipped with the bulge loop, is equipped with in mount pad (5) with bulge loop complex recess.

2. The tower crane traction mechanism according to claim 1, wherein the traction bracket (4) is a rectangular parallelepiped frame open at both ends.

3. The tower crane traction mechanism according to claim 2, wherein the traction bracket (4) is provided with first lead screws (3) at the upper and lower sides of the movable arm (1).

4. The tower crane traction mechanism according to claim 1, wherein a T-shaped slider (6) is fixed on one of the connecting seat (8) and the mounting seat (5), and an annular T-shaped groove for the T-shaped slider (6) to slide is formed on the other one of the connecting seat (8) and the mounting seat (5).

5. The tower crane traction mechanism according to any one of claims 1 to 4, further comprising an adjusting unit, wherein the adjusting unit comprises a second motor (10), a second lead screw (12), an internal thread sleeve (13), a first connecting rod (14), a second connecting rod (15) and a sleeve (11), the second motor (10) is installed in the connecting seat (8), the first motor (2) is in driving connection with the second lead screw (12), the second lead screw (12) is in rotating connection with the connecting seat (8), the internal thread sleeve (13) is in threaded sleeve on the second lead screw (12), a plurality of first connecting rods (14) are hinged on the outer wall of the internal thread sleeve (13), a plurality of second connecting rods (15) are hinged on the bottom of the connecting seat (8) in an annular and equidistant manner, the number of the second connecting rods (15), the number of the first connecting rods (14) and the number of the hoist chains (9) are all equal and are in one-to-one correspondence, the other end of the second connecting rod (15) is hinged with a sleeve (11), the sleeve (11) is sleeved outside the sling chain (9), and one end, far away from the internal thread sleeve (13), of the first connecting rod (14) is hinged with the second connecting rod (15).