CN217297084U

CN217297084U - Crane jib retracting limiting device

Info

Publication number: CN217297084U
Application number: CN202220426772.1U
Authority: CN
Inventors: 李大鹏; 李鑫
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-01
Filing date: 2022-03-01
Publication date: 2022-08-26
Anticipated expiration: 2032-03-01

Abstract

The utility model discloses a stop device is withdrawed to hoist davit relates to the hoist field. The crane boom retraction limiting device is characterized in that a sliding limiting seat is connected to the outer surface of a first boom main body in a sliding mode, a servo motor is fixedly mounted at the top of a boom fixing seat, a driving screw is fixedly mounted at the output end of the servo motor and is in transmission connection with the sliding limiting seat, a fixed limiting seat is fixedly welded to the outer surface of the end portion of the first boom main body and is opposite to the sliding limiting seat. This stop device is withdrawed to hoist davit drives drive screw through servo motor's output and rotates for N shape link drives the spacing seat of slip through the slide bar and slides forward, shortens the distance between spacing seat of slip and the fixed spacing seat with this, realizes the spacing of withdrawing to the hoist davit with this, guarantees that the position of goods handling is accurate when using.

Description

Crane jib retracting limiting device

Technical Field

The utility model relates to a hoist technical field specifically is a stop device is withdrawed to hoist davit.

Background

The heavy machine is a multi-action hoisting machine which can vertically lift and horizontally carry heavy objects in a certain range, and is also called a crown block or a crane, and the hoisting equipment has the working characteristic of intermittent movement, namely corresponding mechanisms of material taking, transporting, unloading and the like in one working cycle work alternately.

But in the in-service use in-process, the goods handling work of hoist often is repeated, the lifting point and the placement point of goods are often the same, and the davit of some old-fashioned hoists is flexible the realization through driver control hydraulic stem when flexible, in the actual operation in-process, often can hold because the time of opening and close and have certain discrepancy, lead to the shrinkage of hydraulic stem to have certain difference, just need carry out the secondary start this moment, carry out further shrink or extend by the commander of ground personnel, can not realize the accurate of goods handling and put, and relatively consume time, consequently, need provide a hoist davit and regain stop device in order to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model discloses a stop device is withdrawed to hoist davit to solve the problem that proposes in the above-mentioned background art.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a crane boom retraction limiting device comprises:

the suspension arm fixing device comprises an installation support plate, wherein a support arm is fixedly welded at the top of the installation support plate, the top of the support arm is rotatably connected with a suspension arm fixing seat, a first suspension arm main body is movably inserted at the end part of the suspension arm fixing seat, and a second suspension arm main body is movably inserted at the end part of the first suspension arm main body;

the spacing seat of sliding, the spacing seat sliding connection of sliding is at the surface of first davit main part, the top fixed mounting of davit fixing base has servo motor, servo motor's output fixed mounting has drive screw, drive screw is connected with the spacing transmission of sliding, the tip external fixation welding of first davit main part has fixed spacing seat, fixed spacing seat is relative with the spacing seat of sliding.

Preferably, the outer surface of the sliding limiting seat is fixedly connected with a sliding rod, the sliding rod is movably inserted into the suspension arm fixing seat, the other end of the sliding rod is fixedly connected with an N-shaped connecting frame, and the driving screw is in threaded connection with the inside of the N-shaped connecting frame.

Preferably, the upper surface of davit fixing base has seted up the spout, N shape link sliding connection is in the inside of spout, the tip of drive screw rotates and is connected with the supporting seat, supporting seat fixed connection is at the upper surface of davit fixing base.

Preferably, a hook is arranged at the end part of the second suspension arm main body, a hoisting steel cable is fixedly connected to the top of the hook, a wire winder is fixedly mounted on the outer surface of the suspension arm fixing seat, and the other end of the hoisting steel cable is wound inside the wire winder.

Preferably, the fixed pulleys are fixedly connected to the upper surfaces of the second boom main body and the boom fixing seat in a rolling mode, the hoisting steel cable bypasses the upper surfaces of the fixed pulleys, the top of the sliding limiting seat is provided with a wiring groove, and the hoisting steel cable penetrates through the wiring groove.

Preferably, the top end of the fixed limiting seat is provided with a limiting groove, the hoisting steel cable penetrates through the limiting groove, the top in the limiting groove is rotatably connected with a rotating roller, and the hoisting steel cable is in contact with the lower surface of the rotating roller.

The utility model discloses a stop device is withdrawed to hoist davit, its beneficial effect who possesses as follows:

1. this stop device is withdrawed to hoist davit, through starting servo motor, make servo motor's output drive screw rotate, make N shape link move to the one end of keeping away from servo motor along the spout, N shape link drives the spacing seat of slip forward at the surface of first davit main part through the slide bar this moment, shorten the distance between spacing seat of slip and the fixed spacing seat with this, when using, first davit main part contracts to retrieving, stop first davit main part when fixed spacing seat contacts with the spacing seat of slip and contract, with this spacing of retrieving the hoist davit is realized, guarantee that the position of goods handling is accurate when using.

2. This hoist davit withdraws stop device, lifts up the goods through the couple, then starts the coiling machine and carries out the rolling to the handling cable wire, and at the in-process of rolling, the handling cable wire removes in the inside of trough and spacing groove to contact with the lower surface of commentaries on classics roller, carry on spacingly to the handling cable wire, prevent that the in-process that the handling cable wire receive and releases from taking place the dislocation and lead to the condition appearance of card line.

Drawings

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

FIG. 2 is a schematic view of the outer surface structure of the suspension arm fixing seat of the present invention;

FIG. 3 is a schematic view of the outer surface structure of the driving screw of the present invention;

fig. 4 is the schematic view of the outer surface structure of the fixed limit seat of the present invention.

In the figure: 1. mounting a carrier plate; 2. a support arm; 3. a suspension arm fixing seat; 4. a first boom body; 5. a second boom body; 6. hooking; 7. fixing a limiting seat; 8. hoisting a steel cable; 9. a fixed pulley; 10. a coil winder; 11. a chute; 12. a sliding limiting seat; 13. a servo motor; 14. a slide bar; 15. an N-shaped connecting frame; 16. a drive screw; 17. a supporting seat; 18. a wiring groove; 19. a limiting groove; 20. and (5) rotating the roller.

Detailed Description

The embodiment of the utility model discloses a hoist davit withdraws stop device, as shown in fig. 1-4, including installation support plate 1, the top of installation support plate 1 is fixedly welded with support arm 2, the top of support arm 2 is rotationally connected with davit fixing base 3, the tip activity of davit fixing base 3 is pegged graft and is had first davit main part 4, the tip activity of first davit main part 4 is pegged graft and is had second davit main part 5;

meanwhile, the device further comprises a sliding limiting seat 12, the sliding limiting seat 12 is connected to the outer surface of the first suspension arm main body 4 in a sliding mode, a servo motor 13 is fixedly installed at the top of the suspension arm fixing seat 3, a driving screw 16 is fixedly installed at the output end of the servo motor 13, the driving screw 16 is in transmission connection with the sliding limiting seat 12, a fixed limiting seat 7 is fixedly welded to the outer surface of the end portion of the first suspension arm main body 4, and the fixed limiting seat 7 is opposite to the sliding limiting seat 12.

Referring to the attached drawings 2-3, the outer surface of the sliding limiting seat 12 is fixedly connected with a sliding rod 14, the sliding rod 14 is movably inserted inside the suspension arm fixing seat 3, the other end of the sliding rod 14 is fixedly connected with an N-shaped connecting frame 15, a driving screw 16 is in threaded connection inside the N-shaped connecting frame 15, the upper surface of the suspension arm fixing seat 3 is provided with a chute 11, the N-shaped connecting frame 15 is in sliding connection inside the chute 11, the end part of the driving screw 16 is rotatably connected with a supporting seat 17, the supporting seat 17 is fixedly connected on the upper surface of the suspension arm fixing seat 3, the output end of the servo motor 13 drives the driving screw 16 to rotate, so that the N-shaped connecting frame 15 moves towards one end far away from the servo motor 13 along the sliding groove 11, and at the moment, the N-shaped connecting frame 15 drives the sliding limiting seat 12 to slide forwards on the outer surface of the first suspension arm main body 4 through the sliding rod 14, so that the distance between the sliding limiting seat 12 and the fixed limiting seat 7 is shortened.

Referring to the attached drawings 1-4, a hook 6 is arranged at the end of the second suspension arm main body 5, a lifting steel cable 8 is fixedly connected to the top of the hook 6, a winding machine 10 is fixedly installed on the outer surface of the suspension arm fixing seat 3, the other end of the lifting steel cable 8 is wound inside the winding machine 10, a fixed pulley 9 is fixedly connected to the upper surfaces of the second suspension arm main body 5 and the suspension arm fixing seat 3 in a winding mode, the lifting steel cable 8 bypasses from the upper surface of the fixed pulley 9, a wiring groove 18 is formed in the top of the sliding limiting seat 12, and the lifting steel cable 8 penetrates through the wiring groove 18.

Referring to the attached drawing 4, a limiting groove 19 is formed in the top end of the fixed limiting seat 7, the hoisting steel cable 8 penetrates through the limiting groove 19, a rotating roller 20 is rotatably connected to the inner top of the limiting groove 19, the hoisting steel cable 8 is in contact with the lower surface of the rotating roller 20, the hoisting steel cable 8 moves in the wire distributing groove 18 and the limiting groove 19 and is in contact with the lower surface of the rotating roller 20, the hoisting steel cable 8 is limited, and the situation that the wire is clamped due to dislocation in the process of winding and unwinding the hoisting steel cable 8 is prevented.

The working principle is as follows: when the device is used, the servo motor 13 is started, so that the output end of the servo motor 13 drives the driving screw rod 16 to rotate, the N-shaped connecting frame 15 moves towards one end far away from the servo motor 13 along the sliding groove 11, the N-shaped connecting frame 15 drives the sliding limiting seat 12 to slide forwards on the outer surface of the first suspension arm main body 4 through the sliding rod 14, the distance between the sliding limiting seat 12 and the fixed limiting seat 7 is shortened, the first suspension arm main body 4 of the device contracts backwards when in use, and the first suspension arm main body 4 stops contracting when the fixed limiting seat 7 is in contact with the sliding limiting seat 12, so that the retracting limitation of the crane suspension arm is realized, and the position accuracy of goods lifting is ensured when in use;

meanwhile, in the using process, the goods are lifted through the hook 6, then the wire coiling machine 10 is started to coil the hoisting steel cable 8, in the coiling process, the hoisting steel cable 8 moves in the wiring grooves 18 and the limiting grooves 19 and is in contact with the lower surface of the rotating roller 20 to limit the hoisting steel cable 8, and the situation that the wire is clamped due to dislocation in the coiling and uncoiling process of the hoisting steel cable 8 is prevented.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a stop device is withdrawed to hoist davit which characterized in that includes:

the suspension arm device comprises an installation support plate (1), wherein a support arm (2) is fixedly welded at the top of the installation support plate (1), the top of the support arm (2) is rotatably connected with a suspension arm fixing seat (3), a first suspension arm main body (4) is movably inserted at the end part of the suspension arm fixing seat (3), and a second suspension arm main body (5) is movably inserted at the end part of the first suspension arm main body (4);

spacing seat (12) slide, slide spacing seat (12) sliding connection is at the surface of first davit main part (4), the top fixed mounting of davit fixing base (3) has servo motor (13), the output fixed mounting of servo motor (13) has drive screw (16), drive screw (16) are connected with the transmission of the spacing seat of sliding (12), the tip outer fixed surface welding of first davit main part (4) has fixed spacing seat (7), fixed spacing seat (7) are relative with the spacing seat of sliding (12).

2. The crane boom retraction limiting device as claimed in claim 1, wherein: the outer surface of the sliding limiting seat (12) is fixedly connected with a sliding rod (14), the sliding rod (14) is movably inserted into the suspension arm fixing seat (3), the other end of the sliding rod (14) is fixedly connected with an N-shaped connecting frame (15), and the driving screw (16) is in threaded connection with the inside of the N-shaped connecting frame (15).

3. The crane boom retraction limiting device as claimed in claim 2, wherein: spout (11) have been seted up to the upper surface of davit fixing base (3), N shape link (15) sliding connection is in the inside of spout (11), the tip of drive screw (16) is rotated and is connected with supporting seat (17), supporting seat (17) fixed connection is at the upper surface of davit fixing base (3).

4. The crane boom retraction limiting device as claimed in claim 1, wherein: the end part of the second suspension arm main body (5) is provided with a hook (6), the top of the hook (6) is fixedly connected with a hoisting steel cable (8), the outer surface of the suspension arm fixing seat (3) is fixedly provided with a coiler (10), and the other end of the hoisting steel cable (8) is wound inside the coiler (10).

5. The crane boom retraction limiting device as claimed in claim 4, wherein: the suspension arm is characterized in that a fixed pulley (9) is fixedly connected to the upper surfaces of the second suspension arm main body (5) and the suspension arm fixing seat (3) in a winding mode, the hoisting steel cable (8) bypasses the upper surface of the fixed pulley (9), a wiring groove (18) is formed in the top of the sliding limiting seat (12), and the hoisting steel cable (8) penetrates through the wiring groove (18).

6. The crane boom retraction limiting device as claimed in claim 5, wherein: the top end of the fixed limiting seat (7) is provided with a limiting groove (19), the hoisting steel cable (8) penetrates through the limiting groove (19), the inner top of the limiting groove (19) is rotatably connected with a rotating roller (20), and the hoisting steel cable (8) is in contact with the lower surface of the rotating roller (20).