CN215626307U

CN215626307U - Circular rail crane

Info

Publication number: CN215626307U
Application number: CN202121607857.1U
Authority: CN
Inventors: 周玉龙; 赵江平; 孟进军; 孙丽
Original assignee: Construction Machinery Branch of XCMG
Current assignee: Construction Machinery Branch of XCMG
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2022-01-25
Anticipated expiration: 2031-07-14

Abstract

The utility model relates to a ring rail crane, comprising a chassis; the first end of the arm support is rotatably connected with the chassis; the first end of the mast is rotatably connected with the chassis; the steel wire rope is connected with the second end of the arm support and the second end of the mast; and an auxiliary support provided to the chassis, the auxiliary support being configured to support the wire rope when the second end of the mast is to be raised, and to disengage the wire rope when the second end of the mast is raised to a first height. The utility model has the function of automatically moving the mast, thereby avoiding the use of a plurality of large auxiliary cranes, reducing the disassembly and assembly cost and improving the disassembly and assembly efficiency.

Description

Circular rail crane

Technical Field

The utility model relates to the field of engineering machinery, in particular to a ring rail crane.

Background

Along with continuous optimization and upgrading of engineering application fields, from the construction aspect, the hoisting is more and more outstanding in efficiency and safety, the trend that the ground of a large-sized component is prefabricated in a modular manner in advance and the petrochemical tank body is hoisted integrally is more and more, and the hoisting construction of the continuously emerging oversized overweight device raises more and more requirements on the capacity of hoisting machinery; from the technical aspect, the hoisting machinery is increasingly large, and higher requirements are inevitably put on the assembly and disassembly of the whole machine; in terms of operation, the problem of too high assembly cost is caused by the large-scale hoisting machinery, and the maximum requirement of the tonnage of the auxiliary crane in the process of disassembling and assembling the circular track crane is the process of lifting the mast and the mast bracket, and the tonnage of the auxiliary crane is 2 to 3 times that of the process of disassembling and assembling other parts in the process of the circular track crane. The use of a plurality of large auxiliary cranes results in high assembly and disassembly costs, and the use of auxiliary cranes causes extremely low assembly and disassembly efficiency. When the auxiliary crane is adopted to carry the mast and the mast support, a sling is generally added at the head of the mast, the height of the center of a lifting hook is usually dozens of meters, the sling is difficult to unhook after the mast is in place, and people are often required to climb to the head of the support to pick the sling. And the auxiliary crane has certain oblique pull, has certain risk in the operation.

Disclosure of Invention

Some embodiments of the utility model provide a loop track crane to alleviate the problem of mast lifting difficulty.

In one aspect of the present invention, there is provided a ring rail crane comprising:

a chassis;

the first end of the arm support is rotatably connected with the chassis;

the first end of the mast is rotatably connected with the chassis;

the steel wire rope is connected with the second end of the arm support and the second end of the mast; and

an auxiliary support provided to the chassis, the auxiliary support being configured to support the wire rope when the second end of the mast is to be raised and to disengage the wire rope when the second end of the mast is raised to a first height.

In some embodiments, the accessory bracket comprises:

a first bracket, a first end of which is connected to the chassis and a second end of which extends upwards; and

and the first end of the second bracket is connected to the second end of the first bracket, and the second end of the second bracket is connected to the arm support.

In some embodiments, the connection of the second bracket to the boom is proximate to the first end of the boom.

In some embodiments, the chassis includes a first mounting portion, and the first end of the arm support is rotatably connected to the first mounting portion; the first end of the mast is rotatably connected with the first mounting part; the auxiliary bracket is connected to the first mounting portion.

In some embodiments, the loop track crane further comprises a mast support and a roller, the first end of the mast support being connected to the second end of the mast, the roller being configured to be positioned at the second end of the mast support during lifting of the first end of the mast support with the second end of the mast; the second end of the mast support is removed at the end of ground travel before being pre-hoisted up to the top of the chassis.

In some embodiments, the accessory bracket comprises:

the first end of the flexible connecting piece is connected to the second end of the first support, and the second end of the flexible connecting piece is connected to the arm support.

Based on the technical scheme, the utility model at least has the following beneficial effects:

in some embodiments, before the circular track crane is assembled, the arm support and the mast are transversely placed on the chassis, the steel wire rope connected between the second end of the mast and the second end of the arm support is approximately positioned on the horizontal plane, the steel wire rope is supported by the auxiliary support, and a fulcrum formed by the auxiliary support, namely a hinge point of the mast, is lifted, so that a lifting dead angle is avoided, and meanwhile, the force arm for lifting the mast is increased, so that the required lifting force of the steel wire rope is greatly reduced; and the weight of the arm support is greater than that of the mast, so that the mast can be lifted by tightening the amplitude-variable steel wire rope, the crane can automatically lift the mast, the use of a plurality of large auxiliary cranes is omitted, the dismounting cost is reduced, and the dismounting efficiency is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:

fig. 1 is a schematic view of an auxiliary support supporting a wire rope before an assembly of a ring track crane according to some embodiments of the present invention;

FIG. 2 is a schematic illustration of the second end of the mast carrier being moved on the ground by rollers during assembly of the loop track crane according to some embodiments of the present invention;

FIG. 3 is a schematic view of the second end of the mast carrier pre-hoisted upward to the top of the chassis at the end of ground travel during assembly of the loop track crane according to some embodiments of the present invention;

FIG. 4 is a schematic illustration of the second end of the mast carrier being attached to the chassis during assembly of the loop track crane according to some embodiments of the present invention;

fig. 5 is a schematic view of the second end of the boom being lifted to a height required for operating state during the assembly of the circular track crane according to some embodiments of the present invention;

FIG. 6 is a schematic view of a mast carrier having a second end attached to a chassis during assembly of a loop track crane according to some embodiments of the present invention, the second carrier being replaced with a flexible connection;

fig. 7 is a schematic diagram illustrating the second end of the boom being raised to a height required for the operating state during the assembly of the circular track crane according to some embodiments of the present invention, and the second support being replaced with a flexible connection;

FIG. 8 is a schematic illustration of the mast support being attached to the chassis at its second end, the second support being removed, and the first support being attached to the mast by a connector during assembly of the loop track crane according to some embodiments of the present invention.

The reference numbers in the drawings illustrate the following:

1-a chassis;

2-arm support;

3-mast;

4-mast support;

5-a steel wire rope;

6-auxiliary support; 61-a first scaffold; 62-a second bracket;

7-a roller;

8-pulling a plate;

9-a pulley block;

10-connecting piece.

It should be understood that the dimensions of the various parts shown in the figures are not drawn to scale. Further, the same or similar reference numerals denote the same or similar components.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the utility model, its application, or uses. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.

The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the present invention, when it is described that a specific device is located between a first device and a second device, there may or may not be an intervening device between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, that particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.

All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

The circular rail crane is a hoisting device which can realize hoisting, amplitude variation and rotation actions and is arranged on a circular rail.

When the circular track crane is assembled, the mast and the mast support are difficult to move, and in some related technologies, a plurality of large auxiliary cranes are adopted to move the mast and the mast support, so that the circular track crane is high in disassembly and assembly cost and low in disassembly and assembly efficiency.

Based on the above, some embodiments of the present disclosure provide an assembling method for a ring rail crane, which is used to alleviate the problems of difficult mast lifting and high assembling and disassembling cost.

In some embodiments, the method of assembling a loop track crane comprises the steps of:

referring to fig. 1, an arm support 2 and a mast 3 are transversely placed on a chassis 1, a first end of the arm support 2 is hinged to the chassis 1, a second end of the arm support 2 is suspended, a first end of the mast 3 is hinged to the chassis 1, and a second end of the mast 3 is suspended. At this time, the arm support 2 and the mast 3 are approximately located on the same straight line, the first end of the arm support 2 is close to the first end of the mast 3, and the second end of the arm support 2 is far from the second end of the mast 3.

An auxiliary support 6 is vertically arranged on the chassis 1, and the auxiliary support 6 upwards supports a steel wire rope 5 connected between the second end of the mast 3 and the second end of the arm support 2.

Referring to fig. 2 and 3, when the steel cable 5 is retracted, because the weight of the arm support 2 is greater than the weight of the mast 3, the second end of the mast 3 is lifted under the pulling force of the steel cable 5, when the second end of the mast 3 is lifted to the first height, the steel cable 5 is separated from the auxiliary support 6, and when the second end of the mast 3 is lifted to the second height, the mast 3 is lifted, referring to fig. 4. Wherein the second height is higher than the first height.

In the above embodiment, before the circular track crane is assembled, the arm support 2 and the mast 3 are transversely placed on the chassis 1 and are approximately positioned on the same straight line, the steel wire rope 5 connected between the second end of the mast 3 and the second end of the arm support 2 is also approximately positioned on the horizontal plane, the steel wire rope 5 is supported by the auxiliary support 6, the pivot point formed by the auxiliary support 6 is the hinge point for lifting the mast 3, the hinge point is lifted, the dead angle is avoided being lifted, the force arm for lifting the mast 3 is increased, and the required lifting force of the steel wire rope 5 is greatly reduced. And the weight of the arm support 2 of the circular track crane is usually larger than that of the mast 3, so the mast 3 can be lifted by tightening the luffing steel wire rope 5. The circular track crane realizes the mode of automatically moving the mast 3 by using the auxiliary support 6 and the amplitude varying system (the steel wire rope, the arm support 2 and the like), thereby avoiding the use of a plurality of large auxiliary cranes, reducing the dismounting cost and improving the dismounting efficiency.

In some embodiments, the method of assembling a loop track crane further comprises the steps of: before the steel wire rope 5 is retracted, the mast support 4 is transversely placed, the first end of the mast support 4 is connected to the second end of the mast 3, and the second end of the mast support 4 is suspended, which is referred to fig. 1; when the steel wire rope 5 is retracted to lift the second end of the mast 3, the second end of the mast 3 drives the first end of the mast support 4 to lift, referring to fig. 2 and 3; when the hoisting of the mast 3 is completed, the second end of the mast carrier 4 is located at the top of the chassis 1, and the second end of the mast carrier 4 is now connected to the chassis 1, see fig. 4.

In some embodiments, the method of assembling a loop track crane further comprises the steps of: at the second end of the mast carrier 4, a roller 7 is provided, see fig. 1; during lifting of the first end of the mast carrier 4, the second end of the mast carrier 4 is moved on the ground by means of the rollers 7, see fig. 2; before the second end of the mast carrier 4 is raised to the top of the chassis 1 at the end of the ground movement, the second end of the mast carrier 4 is disconnected from the trolley 7, see fig. 3.

In the process that the mast 3 and the mast support 4 are lifted, the second end of the mast support 4 can move on the ground through the rolling of the roller 7, the whole process can be free from the intervention of an auxiliary crane, the cost is saved, and the efficiency is improved.

In some embodiments, the method of assembling a loop track crane further comprises the steps of: after the second end of the mast support 4 is connected with the chassis 1, the steel wire rope 5 is continuously retracted, and the second end of the arm support 2 is lifted under the pulling force of the steel wire rope 5 until the second end of the arm support 2 is lifted to the height required by the working state, referring to fig. 5.

In some embodiments, the method of assembling a loop track crane further comprises the steps of: after the second end of the mast support 4 is connected with the chassis 1 and before the steel wire rope 5 continues to be contracted, the auxiliary support 6 is removed, so that the interference on the lifting of the arm support 2 is avoided.

In some embodiments, referring to fig. 1-4, the auxiliary bracket 6 includes a first bracket 61 and a second bracket 62.

A first end of the first bracket 61 is connected to the chassis 1 and a second end of the first bracket 61 extends upward. A first end of the second bracket 62 is connected to a second end of the first bracket 61 and a second end of the second bracket 62 is connected to the arm support 2.

The assembling method of the circular rail crane further comprises the following steps: after the mast 3 has been hoisted and the second end of the mast carrier 4 is connected to the chassis 1, the second bracket 62 of the auxiliary bracket 6 is removed and the first bracket 61 is connected to the mast 3 by means of the connecting piece 10, see fig. 8.

Some embodiments of the present disclosure also provide a ring rail crane configured to implement the assembling method of the ring rail crane described above. Referring to fig. 1, the ring rail crane includes a chassis 1, an arm frame 2, a mast 3, a wire rope 5, and an auxiliary stand 6.

The first end of the arm support 2 is rotatably connected with the chassis 1. The first end of the mast 3 is rotatably connected to the chassis 1. A wire rope 5 connects the second end of the boom 2 and the second end of the mast 3. An auxiliary support 6 is provided on the chassis 1, the auxiliary support 6 being configured to support the wire rope 5 when the second end of the mast 3 is to be raised and to disengage the wire rope 5 when the second end of the mast 3 is raised to the first height, see fig. 3.

The first bracket 61 and the second bracket 62 are both rigid brackets.

In some embodiments, the connection of the second bracket 62 to the boom 2 is proximate to the first end of the boom 2.

In other embodiments, referring to fig. 6 and 7, the auxiliary support 6 includes a first support 61, a flexible connecting member and a connecting member 10, the first support 61 is a rigid support, and the flexible connecting member can be a flexible structure such as a steel cable or a sling. A first end of the first bracket 61 is connected to the chassis 1 and a second end of the first bracket 61 extends upward. The first end of the flexible connection is connected to the second end of the first bracket 61 and the second end of the flexible connection is connected to the arm support 2.

After the mast 3 has been hoisted and the second end of the mast carrier 4 has been attached to the chassis 1, the flexible connector does not have to be removed and the first carrier 61 is attached to the mast 3 by means of the connector 10, see fig. 8.

In some embodiments, the chassis 1 includes a first mounting portion, and the first end of the arm support 2 is rotatably connected to the first mounting portion; the first end of the mast 3 is rotatably connected with the first mounting part; the auxiliary bracket 6 is connected to the first mounting portion.

In some embodiments, the loop track crane further comprises a mast carrier 4 and a trolley 7. The first end of the mast support 4 is connected with the second end of the mast 3, and the roller 7 is configured to be arranged at the second end of the mast support 4 during the lifting process of the first end of the mast support 4 along with the second end of the mast 3; at the end of the ground movement at the second end of the mast carrier 4, it is removed before being raised upwards to the top of the chassis 1.

In other embodiments, the rollers 7 at the second end of the mast carriage 4 may be replaced by a smaller gauge auxiliary crane to assist in tail-flick forward.

In some embodiments, the loop track crane further comprises a pull plate 8, a sheave assembly 9, and a hoisting mechanism. The pulling plate 8, the pulley component 9 and the hoisting mechanism belong to amplitude variation components used in the hoisting process of the circular rail crane. The arrangement of the hoisting mechanism, the connection of the hoisting mechanism, the steel wire rope 5, the pulley component 9, the pull plate 8 and the like can be realized by adopting the prior art, and the description is omitted.

The hoisting mechanism is arranged on the chassis. The wire rope 5 is connected to the hoisting mechanism through the second end of the mast 3, and the wire rope 5 is further connected to the pulley assembly 9. A first end of the pulling plate 8 is connected to the pulley assembly 9, and a second end of the pulling plate 8 is connected to the second end of the arm support 2. The lifting of the mast 3 can be realized by retracting the steel wire rope 5 through the hoisting mechanism, so that the mast can be used for assembling the circular rail crane; and the lifting amplitude variation of the arm support 2 can be realized after the circular track crane is assembled.

Several key states in the assembly process of a loop track crane in some embodiments are described below in connection with fig. 1-7.

Fig. 1 shows a state before the circular track crane is assembled, the boom 2 and the mast 3 are transversely placed on the chassis 1, the boom 2 and the mast 3 are approximately positioned on the same straight line, the first end of the boom 2 is close to the first end of the mast 3, the second end of the boom 2 is far away from the second end of the mast 3, the steel wire rope 5 connects the second end of the mast 3 and the second end of the boom 2, and the auxiliary support 6 upwards supports the steel wire rope 5.

The states shown in fig. 2 are: and the steel wire rope 5 is retracted, the second end of the mast 3 rises under the action of the tension of the steel wire rope 5, the second end of the mast 3 drives the first end of the mast support 4 to rise, and the second end of the mast support 4 moves on the ground through the roller 7. The wire 5 has not yet detached from the auxiliary holder 6.

The states shown in fig. 3 are: at this point, the second end of the mast support 4 can be disconnected from the rollers 7 before the second end of the mast support 4 is raised upward to the top of the chassis 1 at the end of the ground movement. In this state, the wire rope 5 is separated from the auxiliary bracket 6, and the wire rope 5 and the pulling plate 8 are positioned on the same straight line.

The states shown in fig. 4 are: after the mast support 4 is separated from the roller 7, the mast 3 is hoisted completely, the second end of the mast support 4 is positioned at the top of the chassis 1, and the second end of the mast support 4 is connected with the chassis 1.

The state shown in fig. 5 is: and after the second end of the mast support 4 is connected with the chassis 1, the auxiliary support 6 is removed, the steel wire rope 5 is continuously contracted, and the second end of the arm support 2 is lifted under the tension action of the steel wire rope 5 until the second end of the arm support 2 is lifted to the height required by the working state.

The states shown in fig. 6 are: after the mast support 4 is separated from the roller 7, the mast 3 is hoisted completely, the second end of the mast support 4 is positioned at the top of the chassis 1, and the second end of the mast support 4 is connected with the chassis 1.

In the situation shown in fig. 7, as the boom system starts to be lifted, the auxiliary boom 6 will rotate around its dumpling point in the direction of the mast 3 until it reaches its closest distance, and the first boom 61 is connected to the mast 3 by means of the connecting element 10, see fig. 8.

The second support 62 in fig. 6 and 7 is replaced by a flexible connector without dismantling, and if the second support 62 is used, the second support 62 needs to be dismantled in order to avoid interference with the lifting of the boom 2. Therefore, by adopting the flexible connecting piece, repeated disassembly and assembly of the auxiliary bracket 6 can be avoided, so that the auxiliary bracket 6 can be positioned between the arm support and the mast, and the working state is not interfered with any part.

The circular track crane provided by some embodiments of the disclosure has a self-lifting function, can well realize the lifting and positioning of the mast and the mast bracket, removes large-scale auxiliary hoisting equipment, saves the assembly cost, and improves the assembly efficiency.

Based on the embodiments of the utility model described above, the technical features of one of the embodiments can be advantageously combined with one or more other embodiments without explicit negatives.

Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for the purpose of illustration and is not intended to limit the scope of the utility model. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims

1. A loop track crane, comprising:

a chassis (1);

the first end of the arm support (2) is rotatably connected with the chassis (1);

the first end of the mast (3) is rotatably connected with the chassis (1);

the steel wire rope (5) is connected with the second end of the arm support (2) and the second end of the mast (3); and

-an auxiliary support (6) provided to the chassis (1), the auxiliary support (6) being configured to prop up the wire rope (5) when the second end of the mast (3) is to be lifted, and to disengage the wire rope (5) when the second end of the mast (3) is lifted to a first height.

2. A ring rail crane according to claim 1, characterized in that the auxiliary support (6) comprises:

a first bracket (61), wherein a first end of the first bracket (61) is connected to the chassis (1), and a second end of the first bracket (61) extends upwards; and

a second bracket (62), a first end of the second bracket (62) is connected to a second end of the first bracket (61), and a second end of the second bracket (62) is connected to the arm support (2).

3. A ring rail crane according to claim 2, characterized in that the second bracket (62) is connected to the boom (2) close to the first end of the boom (2).

4. The loop track crane according to claim 1, characterized in that the chassis (1) comprises a first mounting part, and the first end of the boom (2) is rotatably connected with the first mounting part; the first end of the mast (3) is rotatably connected with the first mounting part; the auxiliary bracket (6) is connected to the first mounting portion.

5. A ring track crane according to claim 1, further comprising a mast carrier (4) and a roller (7), a first end of the mast carrier (4) being connected to a second end of the mast (3), the roller (7) being configured to be provided at the second end of the mast carrier (4) during lifting of the first end of the mast carrier (4) with the second end of the mast (3); the second end of the mast support (4) is removed at the end of the ground movement, before being lifted upwards to the top of the chassis (1).

6. A ring rail crane according to claim 1, characterized in that the auxiliary support (6) comprises:

the first end of the flexible connecting piece is connected to the second end of the first support (61), and the second end of the flexible connecting piece is connected to the arm support (2).