CN111039201A

CN111039201A - Crane boom convenient for replacing pulleys

Info

Publication number: CN111039201A
Application number: CN201911378771.3A
Authority: CN
Inventors: 黄志峰; 张永华; 朱振东; 聂春梅; 符仁杰
Original assignee: JIANGSU MASADA HEAVY INDUSTRIES CO LTD
Current assignee: JIANGSU MASADA HEAVY INDUSTRIES CO LTD
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-04-21

Abstract

The invention discloses a crane jib convenient for pulley replacement, which comprises a fixed base, wherein the upper end of the fixed base is rotatably connected with a control cabin through a rotating table, wheels are arranged at two ends of the fixed base, tracks are arranged on the surfaces of the wheels, a first fixed shaft is arranged at the upper end of the control cabin, the first fixed shaft is connected with a second fixed shaft through a first suspender, fastening blocks are arranged at two ends of the second fixed shaft, the fastening blocks are fixed with one end of the control cabin through a support frame, the second fixed shaft is fixed with a hoisting machine head through a second suspender, the lower end of the hoisting machine head is fixed with the control cabin through a tower crane support, an operation groove is arranged in the control cabin, and two ends of the inner wall of the operation groove are connected with a first pulley through rotating shafts. The pulley block replacement device has the advantages that the worn pulleys can be conveniently and directly replaced by arranging the plurality of groups of spare pulley blocks, and the pulley block replacement device has the advantages of being timely in maintenance and convenient and rapid to replace.

Description

Crane boom convenient for replacing pulleys

Technical Field

The invention relates to the technical field of cranes, in particular to a crane boom with pulleys convenient to replace.

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 tire crane is mainly characterized in that: the traveling cab and the crane control cab are integrated into a whole and are formed by evolving a crawler crane (crawler crane), a crawler and a traveling support part of a traveling mechanism are changed into a chassis with tires, the defect that a crawler plate of the crawler crane (crawler crane) damages a road surface is overcome, and the material handling machine belongs to material handling machinery. 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. Because the weight is lifted without the supporting legs and the lifted weight is frequently used for driving, the driving speed is higher than that of a crawler crane (crawler crane); the operation is stable, the lifting capacity is large, the lifting can be carried out within a specific range, but the road is required to be smooth and firm, the tire air pressure meets the requirement, and the lifting distance from the ground is not more than 50 CM; long distance walking with load is prohibited. In order to ensure the operation safety, the lifting operation without landing legs is basically forbidden in China at present.

The pulley assembly of present crane jib is inconvenient to change, leads to the pulley to damage the davit and can't in time carry out the operation, therefore the market urgently needs to develop a neotype crane jib of being convenient for change pulley.

Disclosure of Invention

The invention aims to provide a crane jib convenient for pulley replacement, which solves the problems that the crane jib provided by the background technology is inconvenient for pulley component replacement, the crane jib cannot be operated timely due to pulley damage, and the like.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a hoist davit convenient to change pulley, includes the fixed frame, the upper end of fixed frame is rotated with the control storehouse through the revolving stage and is connected, the wheel is installed at the both ends of fixed frame, and the wheel surface is provided with the track, first fixed axle is installed to the upper end in control storehouse, and first fixed axle is connected with the second fixed axle through first jib, the both ends of second fixed axle are provided with the fastening block, and the fastening block is fixed mutually with the one end in control storehouse through the support frame, the second fixed axle passes through the second jib and fixes mutually with the hoist and mount aircraft nose, hoist aircraft nose lower extreme is fixed mutually with the control storehouse through the tower crane support, the inside operation groove that is provided with in control storehouse, and operation inslot wall both ends are connected with first pulley through the axis of rotation, the both.

Preferably, the first pulley is connected with the lifting rope roller through the lifting rope.

Preferably, the surface of the lifting rope roller is provided with a clamping groove.

Preferably, the lifting rope roller is connected with the fixed pulley through a lifting rope.

Preferably, the fixed pulley is fixed with the hoisting lock through a lifting rope, and the lower end of the hoisting lock is provided with a lock hook.

Preferably, two ends of the inner wall of the operation groove are connected with the second pulley through a rotating shaft.

Preferably, two ends of the inner wall of the operation groove are connected with the third pulley through a rotating shaft.

Preferably, the second pulley is located at the middle of the third pulley and the first pulley.

Compared with the prior art, the invention has the beneficial effects that:

(1) the two ends of the inner wall of the operation groove are connected with the first pulley through the rotating shaft, the first pulley is connected with the lifting rope roller through the lifting rope, the two ends of the inner wall of the operation groove are connected with the second pulley through the rotating shaft, the two ends of the inner wall of the operation groove are connected with the third pulley through the rotating shaft, and a plurality of groups of spare pulley blocks are arranged, so that the worn pulley can be conveniently and directly replaced, and the advantages of timely maintenance and convenient and quick replacement are achieved;

(2) the first fixed shaft is connected with the second fixed shaft through the first suspender, the two ends of the second fixed shaft are provided with the fastening blocks, the fastening blocks are fixed to one end of the control bin through the support frame, the second fixed shaft is fixed to the hoisting machine head through the second suspender, the triangular stable support structure is formed by the support frames matched with the plurality of groups of suspenders, the crane boom can be stably supported, and the stability of the crane during operation is improved.

Drawings

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

FIG. 2 is a schematic front end view of the present invention;

FIG. 3 is a schematic side view of the present invention;

FIG. 4 is a front view of the present invention;

FIG. 5 is a schematic rear end view of the present invention;

fig. 6 is a schematic top view of the present invention.

In the figure: 1. hoisting the machine head; 2. hoisting the lockset; 3. a latch hook; 4. a tower crane bracket; 5. a card slot; 6. a lifting rope roller; 7. a lifting rope; 8. a second boom; 9. a second fixed shaft; 10. a fastening block; 11. a first boom; 12. a first fixed shaft; 13. a control cabin; 14. a side plate; 15. a rotating table; 16. fixing the base; 17. a crawler belt; 18. a wheel; 19. a fixed pulley; 20. a support frame; 21. a third pulley; 22. a second pulley; 23. a rotating shaft; 24. a first pulley; 25. and (4) a working groove.

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.

Referring to fig. 1-6, an embodiment of the present invention is shown: a crane boom convenient for replacing pulleys comprises a fixed base 16, the upper end of the fixed base 16 is rotatably connected with a control cabin 13 through a rotating platform 15, wheels 18 are installed at two ends of the fixed base 16, caterpillar bands 17 are arranged on the surfaces of the wheels 18, a first fixing shaft 12 is installed at the upper end of the control cabin 13, the first fixing shaft 12 is connected with a second fixing shaft 9 through a first suspender 11, fastening blocks 10 are arranged at two ends of the second fixing shaft 9, the fastening blocks 10 are fixed with one end of the control cabin 13 through supporting frames 20, the second fixing shaft 9 is fixed with a hoisting machine head 1 through a second suspender 8, the lower end of the hoisting machine head 1 is fixed with the control cabin 13 through a tower crane bracket 4, a triangular stable supporting structure is formed by arranging a plurality of groups of suspenders to be matched with the supporting frames 20, the crane boom can be stably supported, and the stability of a crane, an operation groove 25 is arranged in the control cabin 13, two ends of the inner wall of the operation groove 25 are connected with a first pulley 24 through a rotating shaft 23, and two ends of the control cabin are provided with side plates 14.

Further, the first pulley 24 is connected to the hoist rope roller 6 via the hoist rope 7.

Further, a clamping groove 5 is formed in the surface of the lifting rope roller 6.

Further, the hoist rope roller 6 is connected to the fixed sheave 19 through the hoist rope 7.

Further, the fixed pulley 19 is fixed with the hoisting lock 2 through the lifting rope 7, and the lower end of the hoisting lock 2 is provided with the latch hook 3.

Further, both ends of the inner wall of the working groove 25 are connected to the second pulley 22 through the rotating shaft 23.

Further, both ends of the inner wall of the working groove 25 are connected to the third pulley 21 through the rotating shaft 23.

Further, second pulley 22 is located the positive centre of third pulley 21 and first pulley 24, and the big or small model of three group's pulleys is the same completely, can directly be used for replacing the change, through being provided with the reserve assembly pulley of multiunit, can conveniently directly change the pulley of wearing and tearing, plays the maintenance in time, changes convenient and fast's advantage.

The working principle is as follows: when in use, the upper end of the control cabin 13 is provided with a first fixing shaft 12, the first fixing shaft 12 is connected with a second fixing shaft 9 through a first suspender 11, two ends of the second fixing shaft 9 are provided with fastening blocks 10, the fastening blocks 10 are fixed with one end of the control cabin 13 through a support frame 20, the second fixing shaft 9 is fixed with the hoisting machine head 1 through a second suspender 8, the lower end of the hoisting machine head 1 is fixed with the control cabin 13 through a tower crane support 4, a triangular stable support structure is formed by arranging a plurality of groups of suspenders to match with the support frame 20, the crane boom can be stably supported, the stability of the crane during operation is improved, an operation groove 25 is arranged inside the control cabin 13, two ends of the inner wall of the operation groove 25 are connected with a first pulley 24 through a rotating shaft 23, the first pulley 24 is connected with a lifting rope roller 6 through a lifting rope 7, two ends of the inner wall of the operation groove 25 are, the both ends of 25 inner walls of operation groove are connected with third pulley 21 through axis of rotation 23, and the big small model of three group's pulleys is the same completely, can directly be used for replacing the change, through being provided with the reserve assembly pulley of multiunit, can conveniently directly change the pulley of wearing and tearing, play the maintenance in time, change convenient and fast's advantage.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a hoist davit convenient to change pulley, includes fixed frame (16), its characterized in that, the upper end of fixed frame (16) is rotated with control storehouse (13) through revolving stage (15) and is connected, wheel (18) are installed at the both ends of fixed frame (16), and wheel (18) surface is provided with track (17), first fixed axle (12) are installed to the upper end of control storehouse (13), and first fixed axle (12) are connected with second fixed axle (9) through first jib (11), the both ends of second fixed axle (9) are provided with fastening block (10), and fastening block (10) are fixed mutually through the one end of support frame (20) with control storehouse (13), second fixed axle (9) are fixed mutually with hoist aircraft nose (1) through second jib (8), hoist aircraft nose (1) lower extreme is fixed mutually with control storehouse (13) through tower crane support (4), an operation groove (25) is formed in the control bin (13), two ends of the inner wall of the operation groove (25) are connected with the first pulley (24) through rotating shafts (23), and side plates (14) are arranged at two ends of the control bin.

2. A crane boom facilitating pulley replacement as claimed in claim 1, wherein: the first pulley (24) is connected with the lifting rope roller (6) through the lifting rope (7).

3. A crane boom facilitating pulley replacement as claimed in claim 2, wherein: and a clamping groove (5) is formed in the surface of the lifting rope roller (6).

4. A crane boom facilitating pulley replacement according to claim 2 or 3, characterized in that: the lifting rope roller (6) is connected with the fixed pulley (19) through a lifting rope (7).

5. A crane boom facilitating pulley replacement as claimed in claim 1, wherein: the fixed pulley (19) is fixed with the hoisting lock (2) through the lifting rope (7), and the lower end of the hoisting lock (2) is provided with the lock hook (3).

6. A crane boom facilitating pulley replacement as claimed in claim 1, wherein: two ends of the inner wall of the operation groove (25) are connected with the second pulley (22) through a rotating shaft (23).

7. A crane boom facilitating pulley replacement as claimed in claim 1, wherein: two ends of the inner wall of the operation groove (25) are connected with the third pulley (21) through a rotating shaft (23).

8. A crane boom facilitating pulley replacement according to claim 6 or 7, characterized in that: the second pulley (22) is positioned right in the middle of the third pulley (21) and the first pulley (24).