阅读说明：本技术 一种用于变幅机构维护保养的辅助装置及门座起重机 (Auxiliary device for maintaining luffing mechanism and portal crane ) 是由 王义凡 梁强 赵增林 王行才 周保珠 于 2020-06-16 设计创作，主要内容包括：本公开提供一种用于变幅机构维护保养的辅助装置及门座起重机,涉及起重机维保领域,包括用于铰接在立柱上的第一滑杆和第二滑杆,第一滑杆配合有沿其轴向移动的第一小车,第一滑杆绕其与立柱铰接点所在竖直线水平转动,第二滑杆通过连杆铰接在平衡梁上,用于受平衡梁作用共同在竖直面内转动,第二滑杆上配合有沿其轴向移动的第二小车,第一小车和第二小车用于协同运送变幅机构零部件,通过将变幅机构维护保养用的辅助装置预先布置在起重机四连杆平衡结构上,在进行维护保养时,辅助装置将起重机四连杆平衡结构进行捆绑约束,采用四连杆维护行车组件和旋转维护吊组件,无需再装焊吊耳,无破坏性施工,无需恢复性施工,提高了整个维护保养的效率。(The utility model provides an auxiliary device and a portal crane for luffing mechanism maintenance, which relates to the field of crane maintenance, and comprises a first slide bar and a second slide bar hinged on a vertical column, wherein the first slide bar is matched with a first trolley moving along the axial direction of the first slide bar, the first slide bar horizontally rotates around a vertical line where the hinge point of the first slide bar and the vertical column is positioned, the second slide bar is hinged on a balance beam through a connecting rod and used for rotating in a vertical plane under the action of the balance beam, the second slide bar is matched with a second trolley moving along the axial direction of the second slide bar, the first trolley and the second trolley are used for cooperatively conveying parts of a luffing mechanism, the auxiliary device for luffing mechanism maintenance is arranged on a four-connecting-rod balance structure of the crane in advance, when the maintenance is carried out, the auxiliary device binds and restrains the four-connecting-rod balance structure of the crane, a traveling component and a rotary maintenance, need not to reload and weld the lug, no destructive construction need not the recovery construction, has improved the efficiency of whole maintenance.)

1. The utility model provides an auxiliary device for luffing mechanism maintains maintenance, hoist four-bar linkage balance mechanism is including articulated stand in proper order, compensating beam and cantilever crane, luffing mechanism connects stand and cantilever crane, a serial communication port, auxiliary device is including being used for articulating first slide bar and the second slide bar on the stand, first slide bar cooperation has along its axial displacement's first dolly, first slide bar rotates around its and stand pin joint place vertical line level, the second slide bar passes through the connecting rod and articulates on the compensating beam for receive compensating beam effect sharing at vertical in-plane rotation, the cooperation has along its axial displacement's second dolly on the second slide bar, first dolly and second dolly are used for transporting luffing mechanism spare part in coordination.

2. The auxiliary device for the maintenance of a luffing mechanism according to claim 1, wherein the first slide rod is articulated with a pull rod, the end of the pull rod remote from the first slide rod being adapted to be articulated with the upright.

3. The auxiliary device for the maintenance of a luffing mechanism according to claim 2, wherein the first slide bar, the pull rod and the first trolley form a first assembly, the first assembly integrally rotates around a vertical line at which the first slide bar is hinged to the upright; the first sliding rod and the pull rod are used for being matched with the upright post to form a triangular structure.

4. The auxiliary device for the maintenance of a luffing mechanism according to claim 1, wherein the connecting rod is articulated at one end to the second slide bar and at the other end to the equalizer beam; the connecting rod, the second sliding rod and the second trolley form a second assembly, and the second sliding rod is used for rotating around a hinge point of the second sliding rod and the upright post under the action of the balance beam.

5. An auxiliary device for the maintenance of a horn according to claim 4 wherein said connecting rod, second slide bar are adapted to cooperate with the balance beam and the upright to form a four bar linkage.

6. The auxiliary device for the maintenance of a luffing mechanism according to claim 1, further comprising a first binding member having one end for articulating on the equalizer beam and another end for articulating on or connecting to the equalizer beam for locking or unlocking the rotation of the equalizer arm about the equalizer beam.

7. The auxiliary device for the maintenance of a luffing mechanism according to claim 6, further comprising a second binding member having one end for articulating to the boom and the other end for articulating to the mast or connecting to the boom for locking or unlocking the rotation of the boom.

8. The apparatus of claim 7, wherein the first and second binding members are rod members having hinges coupled to opposite ends of the rod members.

9. The auxiliary device for the maintenance of the luffing mechanism according to claim 1, wherein the first trolley and the second trolley are respectively provided with a traction mechanism, and one end of the second slide bar, which is far away from the upright post, is connected with a traction chain for receiving the action of external force to drive the second slide bar to rotate.

10. A portal crane comprising an auxiliary device for the maintenance of a luffing mechanism as claimed in any of claims 1 to 9.

Technical Field

The disclosure relates to the field of crane maintenance, in particular to an auxiliary device for maintenance of a luffing mechanism and a portal crane.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The maintenance of the luffing mechanism of the portal crane is mainly completed by external equipment such as a crane, a steel wire rope, a supporting tool and the like. In the process of maintenance, a large amount of work such as hoisting, welding, transferring, repairing and the like is needed, the construction quantity is large, and the working procedures are complicated. For example, to disassemble a transfer rack, the following steps are required: 1. welding the arm support and the balance system through a tool, and firmly binding; 2. welding a lifting lug on the top of the amplitude-variable platform, welding the lifting lug below the balance beam, disassembling the rack, and performing combined dispatching and transferring, conversion and transverse movement through the truck crane and the lifting lug; 3. after a section of transverse movement, the rack is loosened, the truck lifting point is repositioned, the rack is lifted, and the rack is lifted away by combining with the lifting lug.

The inventor finds that the maintenance of the luffing mechanism of the portal crane at present has more defects: 1. the maintenance operation is inconvenient, external equipment is required for hoisting and transferring when the luffing mechanism is maintained, the space interference condition of components such as an upright post, a steel wire rope, a balance beam and the like is considered in the hoisting process, the hoisting point needs to be replaced for many times in the hoisting process, the hoisting is repeated, and meanwhile, the combined operation of a plurality of cranes is required; 2. the operation amount is large, the cost is high, the whole arm support and the balance system are often required to be firmly bound before the amplitude variation mechanism is maintained, and a large amount of tooling and welding work are required; after the maintenance work is completed, the binding piece is disassembled, hoisted, and the paint is repaired. In the maintenance process, the lifting lugs need to be ascended to weld, the steel wire ropes need to be hung in an ascending manner, the truck crane needs to be operated, and the like are dispatched and transported in a combined manner. The construction amount in the whole process is large, and more labor and maintenance time are needed; 3. the time for single maintenance is long, and when the parts of the luffing mechanism are maintained, due to the complex process and complex steps, a large amount of time is occupied for scheduling external equipment and arranging an auxiliary structure.

Disclosure of Invention

The utility model aims at the defect that prior art exists, provide an auxiliary device and portal crane for luffing mechanism maintains maintenance, through arranging luffing mechanism maintains the auxiliary device of maintenance usefulness on hoist four-bar linkage balanced structure in advance, when maintaining the maintenance, auxiliary device bindes the restraint with hoist four-bar linkage balanced structure, adopt four-bar linkage to maintain driving subassembly and rotatory maintenance and hang the subassembly, need not to reweld the lug, destructive construction, need not restorative construction, the efficiency of whole maintenance is improved.

The first purpose of this disclosure is to provide an auxiliary device for luffing mechanism maintenance, adopts following technical scheme:

the four-connecting-rod balance structure of the crane comprises a stand column, a balance beam and an arm support, wherein an amplitude-changing mechanism is connected with the stand column and the arm support, an auxiliary device comprises a first sliding rod and a second sliding rod which are hinged to the stand column, the first sliding rod is matched with a first trolley which moves along the axial direction of the first sliding rod, the first sliding rod horizontally rotates around the vertical line where the first sliding rod is hinged to the stand column, the second sliding rod is hinged to the balance beam through a connecting rod and rotates in the vertical plane under the action of the balance beam, the second trolley which moves along the axial direction of the second sliding rod is matched with the second trolley, and the first trolley and the second trolley are used for.

Furthermore, the first sliding rod is hinged with a pull rod, and one end, far away from the first sliding rod, of the pull rod is used for being hinged to the stand column.

Furthermore, the first sliding rod, the pull rod and the first trolley form a first assembly, and the first assembly integrally rotates around a vertical line where a hinge point of the first sliding rod and the upright post is located; the first sliding rod and the pull rod are used for being matched with the upright post to form a triangular structure.

Furthermore, one end of the connecting rod is hinged to the second sliding rod, and the other end of the connecting rod is used for being hinged to the balance beam; the connecting rod, the second sliding rod and the second trolley form a second assembly, and the second sliding rod is used for rotating around a hinge point of the second sliding rod and the upright post under the action of the balance beam.

Further, the connecting rod and the second sliding rod are used for matching the balance beam and the upright column to form a four-bar mechanism.

And further, the balance arm further comprises a first binding piece, one end of the first binding piece is used for being hinged on the balance beam, and the other end of the first binding piece is used for being hinged on the upright post or connected with the balance beam and used for locking or unlocking the rotation of the balance arm around the upright post.

Furthermore, the device also comprises a second binding piece, wherein one end of the second binding piece is hinged to the arm support, and the other end of the second binding piece is hinged to the upright post or connected with the arm support and used for locking or unlocking the rotation of the arm support.

Furthermore, the first binding piece and the second binding piece are rod pieces, and two ends of each rod piece are matched with hinges.

Furthermore, the first trolley and the second trolley are matched with a traction mechanism, and one end, far away from the stand column, of the second slide bar is connected with a traction chain for receiving the action of external force to drive the second slide bar to rotate.

A second object of the present disclosure is to provide a portal crane making use of an auxiliary device for maintenance of the luffing mechanism as described above.

Compared with the prior art, the utility model has the advantages and positive effects that:

(1) the auxiliary device is directly arranged on the four-connecting-rod balance structure of the crane, the auxiliary device does not interfere with the normal action of the crane when the luffing mechanism runs, and the auxiliary device locks the action of the four-connecting-rod balance structure of the crane and then the trolley is used for completing the transportation of parts of the luffing mechanism during maintenance; the maintenance device is convenient to use and easy to operate, simplifies the process flow of maintaining and maintaining the parts of the luffing mechanism, and improves the efficiency of maintenance;

(2) the first assembly is configured to be a four-bar structure, the second assembly forms a horizontal rotating structure, and any part of the luffing mechanism can be transferred to the top of a machine room by using the combination of the four-bar maintenance travelling assembly and the rotating maintenance hoisting assembly without additional equipment such as a crane and the like, so that the maintenance cost is greatly reduced;

(3) the first binding piece and the second binding piece are adopted to form the binding assembly, the binding assembly fixes the arm support and the balance beam system of the door base machine, the operation is convenient, destructive construction is not needed when the arm support and the balance beam system are fixed, and the operation of construction recovery is omitted; meanwhile, the four-connecting-rod maintenance travelling crane assembly and the rotary maintenance hanging assembly are adopted, so that a conveying mechanism is not required to be arranged with a welding lifting lug during conveying, destructive construction is also not required, and the maintenance efficiency is improved;

(4) through the combined use of the four-connecting-rod maintenance traveling crane assembly and the rotary maintenance hoisting assembly, the calling of external equipment is avoided, the problem of space interference is reduced, the complex operation in the hoisting process is omitted, the maintenance period can be obviously shortened, the downtime is reduced, and the utilization rate of the portal frame is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.

Fig. 1 is a schematic structural diagram of an auxiliary device and a luffing mechanism in embodiments 1, 2 and 3 of the disclosure;

fig. 2 is a schematic structural diagram of a second binding member in embodiments 1, 2, and 3 of the present disclosure;

fig. 3 is a schematic structural diagram of a first binding member in embodiments 1, 2, and 3 of the present disclosure;

FIG. 4 is a schematic view of the structure of the second slide bar cooperating with other elements in embodiments 1, 2 and 3 of the present disclosure;

FIG. 5 is a schematic view of the structure of the first slide bar and other elements in embodiments 1, 2, and 3 of the present disclosure;

fig. 6 is a schematic structural diagram of the operation of the four-bar linkage balance structure of the crane in embodiments 1, 2 and 3 of the present disclosure.

In the figure, 1-binding component, 101-rear support rod system, 102-front pull rod system, 1011-first fixed hinged support, 1012-rear support rod, 1013-first fixed seat, 1014-first binding seat, 1015-first hinged shaft, 1021-second binding seat, 1022-front pull rod, 1023-second fixed seat, 1024-second fixed hinged support, 1025-second hinged shaft, 2-four-link maintenance traveling crane component, 201-third fixed hinged support, 202-movable link, 203-second sliding rod, 204-second maintenance pulley, 205-fourth fixed hinged support, 206-third hinged shaft, 3-rotary maintenance hoisting component, 301-fifth fixed hinged support, 302-rotary structure, 303-first maintenance pulley, 304-traction chain, 4-balance beam, 5-balance beam, 6-upright post and 7-luffing mechanism.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

for convenience of description, the words "up", "down", "left" and "right" in this disclosure, if any, merely indicate that the directions of movement are consistent with those of the figures themselves, and are not limiting in structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present disclosure.

As introduced in the background art, the gantry crane in the prior art has the disadvantages of inconvenient maintenance operation, large operation amount and long time consumption; in order to solve the problems, the disclosure provides an auxiliary device for maintaining a luffing mechanism and a portal crane.