CN112978593A - Track chassis assembly and track crane - Google Patents

Abstract

The present disclosure relates to a rail chassis assembly and a rail-mounted crane. A rail chassis assembly for a rail-mounted crane convertible to a plurality of tonnages, comprising: the roadbed box comprises a plurality of roadbed box groups, wherein each roadbed box group comprises a plurality of roadbed boxes which can be arranged into a sector ring shape or a circular ring shape along the circumferential direction, and the radius of the sector ring shape or the circular ring shape corresponding to each roadbed box group is different; and a plurality of circular tracks, each circular track is in a closed or non-closed circular ring shape; the system comprises a track crane, a plurality of road boxes, a plurality of circular rails, a plurality of lifting mechanisms and a plurality of lifting mechanisms, wherein under the operation working condition of the circular rails with the maximum tonnage, the plurality of road boxes are arranged into a first bottom foundation of the track crane and are concentrically and radially arranged, and the plurality of circular rails are concentrically arranged on the upper surface of the first bottom foundation; under other ring rail operating conditions of at least part of tonnage, at least part of the roadbed boxes of the plurality of roadbed box groups are arranged to be a second bottom foundation of the track type crane, and a part of the ring rails in the plurality of ring rails is concentrically arranged on the upper surface of the second bottom foundation.

Description

Track chassis assembly and track crane

Technical Field

The disclosure relates to the field of engineering machinery, in particular to a track chassis assembly and a track type 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 forward on the whole structure, mechanism and foundation bearing capacity, and higher requirements are put forward on the manufacturing and matching capacity; from the operation aspect, according to engineering practice, the hoisting ratio of the overweight part is not too high, and the overweight part accounts for the hoisting of mostly medium-sized pieces, and the problem of overhigh operation cost is often faced when the overweight part is hoisted by the ultra-large crane in the process of hoisting the medium-sized pieces. Therefore, how to handle the condition of hoisting the overweight part and simultaneously improving the operation economy below the medium-sized part in hoisting is a problem to be solved urgently at present.

Disclosure of Invention

In view of this, the embodiment of the present disclosure provides a track chassis assembly and a track crane, which can meet the requirement of hoisting an overweight member and improve the operation economy below the overweight member.

In one aspect of the present disclosure, there is provided a rail chassis assembly for a rail-mounted crane convertible to a plurality of tonnages, comprising:

the roadbed box comprises a plurality of roadbed box groups, wherein each roadbed box group comprises a plurality of roadbed boxes which can be arranged into a sector ring shape or a circular ring shape along the circumferential direction, and the radius of the sector ring shape or the circular ring shape corresponding to each roadbed box group is different; and

the circular tracks are closed or non-closed circular rings;

wherein, under the operation condition of the ring rail of the track crane at the maximum tonnage in the tonnage, the plurality of roadbed boxes are arranged into a first bottom foundation of the track crane and are concentrically and radially arranged, and the plurality of ring rails are concentrically arranged on the upper surface of the first bottom foundation;

under the operating condition that the track crane is in the circular rail of other at least part tonnages of maximum tonnage in a plurality of tonnages, the at least part road bed case group of a plurality of road bed case groups is arranged into the second bottom basis of track crane, just some circular rails in a plurality of circular rails set up concentrically the upper surface on second bottom basis.

In some embodiments, a predetermined gap or adjustment plate is provided between at least some adjacent roadbed boxes of a part of the plurality of roadbed box groups in a state that the track-mounted crane is at other of the plurality of tonnage.

In some embodiments, the adjustment plate is at least one roadbed box in another part of the plurality of roadbed box groups.

In some embodiments, the rail chassis assembly further comprises:

a linear track;

wherein, under the rail mounted crane is in straight rail operating condition, at least one road bed case group in a plurality of road bed case groups is arranged into rail mounted crane's third bottom basis, just the straight line form track sets up along first direction the upper surface on third bottom basis, a plurality of road bed cases in at least one road bed case group are followed first direction arranges, and the relative opposite direction of the long limit of two adjacent road bed cases and minor face just all perpendicular to first direction.

In some embodiments, the plurality of endless tracks comprises four endless tracks;

wherein the four endless tracks are concentrically disposed on an upper surface of the first bottom foundation under an endless track operating condition of the track-mounted crane at a maximum tonnage of the plurality of tonnages;

and under the operating condition that the track type crane is in other ring rails with at least partial tonnage except the maximum tonnage in the tonnage, any three, any two or any one of the four ring rails is arranged on the upper surface of the second bottom foundation.

In some embodiments, the plurality of roadbed box groups comprise: the device comprises an inner roadbed box group and an outer roadbed box group;

under the ring rail operation working condition that the rail crane is at the maximum tonnage of the tonnage, the inner roadbed box group and the outer roadbed box group are combined into the first bottom foundation, and the inner roadbed box group is positioned on the inner side of the outer roadbed box group;

and under the operating condition that the track type crane is in other ring rails with at least part of tonnage except the maximum tonnage in the tonnage, the inner roadbed box group or the outer roadbed box group is assembled into the second bottom foundation.

In one aspect of the present disclosure, there is provided a rail-type crane including:

the aforementioned rail chassis assembly;

a plurality of trolley assemblies disposed at least partially on the rail chassis assembly;

an equipment platform connected with the plurality of trolley assemblies;

the power driving assembly is arranged on the equipment platform, is connected with the plurality of trolley assemblies and is configured to drive each trolley assembly arranged on the track chassis assembly to move; and

and the hoisting assembly is arranged on the equipment platform and is connected with the power driving assembly.

In some embodiments, the trolley assembly comprises a set of rail wheels, a first trolley gimbal and a second trolley gimbal;

under the operation condition that the rail-mounted crane is in the ring rail with the largest tonnage in the tonnage, the trolley assemblies are movably arranged on the ring rails of the rail chassis assembly, the rail wheel set in each trolley assembly is connected with the first trolley balance frame and is positioned on the lower side of the first trolley balance frame, and the second trolley balance frame is connected with two first trolley balance frames running on two adjacent ring rails or two ring rails spaced by at least one ring rail and is positioned on the upper sides of the two first trolley balance frames.

In some embodiments, under the operating condition that the track-type crane is in other at least partial tonnage circular rail operation except for the maximum tonnage in the tonnage, a part of the trolley assemblies of the plurality of trolley assemblies is movably arranged on at least two circular rails of the track chassis assembly, a track wheel set in each trolley assembly is connected with the first trolley balance frame and is positioned at the lower side of the first trolley balance frame, and the equipment platform is directly connected with the first trolley balance frame or is connected with the first trolley balance frame through the second trolley balance frame.

In some embodiments, the hoist assembly comprises: the system comprises a boom system, a counterweight system and an operation system; the arm support system comprises an arm support with at least one standard arm section, wherein the standard arm section comprises at least one group of bearing type chord member structure units and a connecting joint, the connecting joint is arranged at least one end of the at least one group of bearing type chord member structure units, and the length and the cross section size of the standard arm section are respectively determined by the number of the bearing type chord member structure units included in the standard arm section and the arrangement mode of each group of bearing type chord member structure units.

In some embodiments, each set of load-bearing chord structural units comprises four load-bearing chord structural units arranged in a "field" shape on a cross section perpendicular to the length direction of the standard arm section under the ring rail operating condition of the rail crane at the maximum tonnage in the plurality of tonnages; under the operation condition that the track crane is in the ring rail with at least partial tonnage except the maximum tonnage in the tonnage, each group of bearing type chord member structure units comprises one or two bearing type chord member structure units which are arranged on the section which is vertical to the length direction of the standard arm section.

In the embodiment of the disclosure, part or all of the plurality of roadbed box groups are selected to arrange the bottom foundation of the rail crane according to the operation conditions of the ring rails with different tonnages, and part or all of the plurality of ring rails are selectively arranged on the bottom foundation, so that the requirements of the operation conditions of the ring rails with different tonnages on the bearing capacity of the foundation can be met, and meanwhile, when the cranes with different tonnages are formed, the parts in the rail chassis assembly are more fully used, the utilization rate of the parts is improved, and the economical efficiency of the crane is improved.

When the track type crane is converted into the maximum tonnage, a plurality of roadbed boxes are used for arranging a first bottom foundation with a larger area so as to improve the bearing capacity of the foundation, and a plurality of annular rails are used for supporting a plurality of trolley assemblies of the track type crane so as to share the load step by step, reduce the load born by each annular rail and reduce the requirements on the local strength and rigidity of the roadbed boxes; when the track type crane is converted into lower tonnage, under the condition of meeting the requirement of the bearing capacity of the foundation, the bearing and movement requirements of the track type crane can be met by using part of the roadbed box group and part of the annular track, so that the operation cost is reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

The present disclosure may be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:

FIG. 1 is a schematic illustration of an installation configuration of some embodiments of a rail chassis assembly according to the present disclosure at a first tonnage;

fig. 2 is a schematic layout of a roadbed box set in some embodiments of the track chassis assembly according to the present disclosure;

FIG. 3 is a schematic layout of an endless track in some embodiments of a track chassis assembly according to the present disclosure;

FIG. 4 is a schematic illustration of an installation configuration of some embodiments of a rail chassis assembly according to the present disclosure at a second tonnage;

FIG. 5 is a schematic illustration of an installation configuration of some embodiments of a rail chassis assembly according to the present disclosure at a third tonnage;

FIG. 6 is a schematic view of a load transfer down principle according to some embodiments of the track pan assembly of the present disclosure;

FIG. 7 is a schematic illustration of a mounting configuration for straight rail operation in some embodiments of a rail chassis assembly according to the present disclosure;

FIG. 8 is a schematic structural view of some embodiments of a rail-mounted crane according to the present disclosure;

fig. 9 is a schematic structural view of a standard arm segment in some embodiments of a rail-mounted crane according to the present disclosure.

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 disclosure 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 disclosure, its application, or uses. The present disclosure 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 disclosure 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 this disclosure is not intended to indicate any order, quantity, or importance, but rather 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 disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be intervening devices 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 or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure 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.

Referring to fig. 1-6, in some embodiments of the rail chassis assembly of the present disclosure, the rail chassis assembly is for a rail-mounted crane convertible to multiple tonnages. The track chassis assembly includes: a plurality of roadbed box groups 10 and a plurality of ring rails 20. Each roadbed box group 10 comprises a plurality of roadbed boxes which can be arranged in a fan-shaped or circular ring shape along the circumferential direction, and the radius of the fan-shaped or circular ring shape corresponding to each roadbed box group 10 is different.

Referring to fig. 2, each roadbed box in the roadbed box group can be arranged into a circular ring shape or a fan-shaped ring shape. Two adjacent roadbed boxes can be connected with each other, and a preset distance can also be set. In the same roadbed box group, the radial widths of all roadbed boxes are the same, the radiuses of circle centers relative to a circular ring shape or a sector ring shape are the same, and the circumferential widths can be the same or different. The radius of the roadbed boxes in different roadbed box groups is different relative to the circle center of a circular ring or a sector ring, so that the arrangement of concentric multi-circle roadbed box groups can be realized.

Each circular track 20 is in the form of a closed or non-closed circular ring. The shape of the circular track is not limited to a closed circular ring shape, and may be a non-closed circular ring shape, that is, a shape of a segment of a circular arc. The shape of the circular track can be determined according to the working condition of the rail crane, and the shape of the circular track can correspond to the shape of the arrangement of the roadbed boxes, for example, a plurality of roadbed boxes which are arranged into a circular ring shape are provided with a closed circular ring-shaped circular track, and a plurality of roadbed boxes which are arranged into a sector ring shape are provided with a non-closed circular ring-shaped circular track

Under the operation condition that the track-type crane is in the ring rail with the maximum tonnage of the tonnage, the multiple roadbed boxes 10 are arranged into a first bottom foundation of the track-type crane, and the multiple roadbed boxes 10 are concentrically and radially arranged, and the multiple ring rails 20 are concentrically arranged on the upper surface of the first bottom foundation.

When the rail crane is converted to the maximum tonnage, a plurality of roadbed box groups are used to arrange a larger area of the first bottom foundation so as to improve the bearing capacity of the foundation. Referring to fig. 1 and 6, the use of a plurality of circular tracks to support a plurality of trolley assemblies of a rail crane allows for gradual load sharing, reduces the load carried by each circular track, and reduces the requirements for local strength and rigidity of the ballast tank group.

Under the operation condition that the track type crane is in other ring rails with at least partial tonnage except the maximum tonnage in the tonnage, at least part of the roadbed boxes 10 of the plurality of roadbed boxes 10 are arranged into a second bottom foundation of the track type crane, and a part of the ring rails 20 in the plurality of ring rails 20 is concentrically arranged on the upper surface of the second bottom foundation.

When the rail crane is converted into a lower tonnage, the bearing and movement requirements of the rail crane can be met by using part of the roadbed box group and part of the annular rail under the condition of meeting the requirement of the bearing capacity of the foundation, so that the operation cost is reduced. Unused roadbed boxes and ring tracks can be used for the rail chassis of other lower tonnage rail-mounted cranes, thereby improving the utilization of components in the rail chassis assembly.

According to the embodiment, part or all of a plurality of roadbed boxes are selected to arrange the bottom foundation of the track crane according to the ring rail operation working conditions of different tonnages, and part or all of a plurality of ring rails are selectively arranged on the bottom foundation, so that the requirements of the ring rail operation working conditions of different tonnages on the bearing capacity of a foundation can be met, and meanwhile, when the cranes of different tonnages are formed, the components in the track chassis assembly are more fully used, the utilization rate of the components is improved, and the economical efficiency of the crane is improved.

In order to provide a good foundation bearing effect for the circular track with a non-adjustable diameter, in some embodiments, a preset gap or an adjusting plate is provided between at least some adjacent roadbed boxes in a part of roadbed box groups 10 of the plurality of roadbed box groups 10 under the operation condition of the circular track with at least some tonnage of the track crane except for the maximum tonnage of the plurality of tonnage, so that the shape and the size of a bottom foundation formed by the plurality of roadbed boxes in the roadbed box groups can be adjusted through the preset gap or the adjusting plate, and the requirement of laying the circular track is met.

To further increase the utilization of components (e.g., roadbed boxes) in the track chassis assembly, in some embodiments, the adjustment panel is at least one roadbed box in another portion of the plurality of roadbed box assemblies 10. In other words, the shape and size of the formed bottom foundation can be adjusted by inserting the roadbed boxes in some other roadbed box group into a plurality of roadbed boxes of a certain roadbed box group, so as to improve the component utilization rate.

In fig. 1 and 3, the plurality of endless tracks 20 includes four endless tracks 20. In other embodiments, the plurality of endless tracks may also include two or three endless tracks, or more than five endless tracks.

Referring to fig. 1, in some embodiments, the four endless tracks 20 are concentrically arranged on the upper surface of the first bottom foundation under a ring rail operating condition of the track-type crane at a maximum tonnage of the plurality of tonnages. The heavy load of the track crane can be better shared by more annular tracks, the load borne by each annular track is reduced, the performance requirements of the annular tracks are reduced, the related manufacturing cost is reduced, the requirements on the local strength and the rigidity of the roadbed box group can be further reduced by the load sharing effect of the more annular tracks, and the manufacturing requirements and the manufacturing cost on the roadbed box group are reduced.

Referring to fig. 4 and 5, in some embodiments, any three, any two, or any one of the four circular rails 20 are disposed on the upper surface of the second bottom base under the operation condition of the circular rail of at least part of the tonnage of the rail-mounted crane except for the maximum tonnage among the tonnage.

In fig. 3, the four circular tracks are circular tracks 21, 22, 23 and 24 from inside to outside, and can be adjusted to a three-track large crane according to requirements to reduce the operation cost, and the track combination can be circular tracks 21, 22 and 23, circular tracks 21, 22 and 24, circular tracks 22, 23 and 24, or circular tracks 21, 23 and 24. These several track combinations may correspond to large rail cranes that achieve different lifting capacities.

The endless tracks 21, 22, 23 and 24 may also be adjusted to a double track medium sized crane according to the need in order to further reduce the operation cost, and the track combination may be the endless tracks 21 and 22, the endless tracks 21 and 23, the endless tracks 21 and 24, the endless tracks 22 and 23, the endless tracks 22 and 24, or the endless tracks 23 and 24. These several track combinations may correspond to medium duty rail cranes that achieve different lifting capacities.

The endless tracks 21, 22, 23 and 24 can also be adjusted to a single track small crane according to requirements to further reduce the operation cost, and the track combination can be the endless track 21, the endless track 22, the endless track 23 or the endless track 24. These several track combinations may correspond to small track cranes that achieve different lifting capacities.

According to different track combinations, different roadbed and box group combination schemes can be adopted. In fig. 2, in some embodiments, a plurality of roadbed box groups 10 include: an inner roadbed box group 11 and an outer roadbed box group 12. In other embodiments, the plurality of foundation box groups may also include three or four foundation box groups, or may include more than five foundation box groups.

Referring to fig. 1, in some embodiments, the inner and outer ballast tank groups 11 and 12 are combined to form the first bottom foundation under a ring rail operation condition of the track-type crane in a maximum tonnage among the tonnage, and the inner ballast tank group 11 is located inside the outer ballast tank group 12. Accordingly, a portion of the plurality of circular rails having a larger diameter may be disposed on the surface of the outer ballast box group 12, and a portion of the plurality of circular rails having a smaller diameter may be disposed on the surface of the inner ballast box group 11.

Referring to fig. 4 and 5, in some embodiments, the inner roadbed box group 11 or the outer roadbed box group 12 is spliced to form the second bottom foundation under the ring rail operation condition of at least part of the tonnage of the track-mounted crane except for the maximum tonnage of the tonnage. For example, in fig. 4, for the looped tracks 22 and 24, an outer set of ballast tanks may be used to form the second bottom foundation, and since the diameter of the looped track 22 is relatively small, the spacing between adjacent sets of ballast tanks in the outer set of ballast tanks may be correspondingly reduced to match the looped track 22. For tracks with larger diameters, the second bottom foundation can also be formed by adopting the inner roadbed box group, and the distance between the adjacent roadbed box groups in the inner roadbed box group is correspondingly increased, or the roadbed boxes inserted into the outer roadbed box group are used as adjusting plates. For the inner roadbed box and the outer roadbed box, the roadbed boxes in the inner roadbed box and the outer roadbed box can be mutually used as adjusting plates so as to meet more expansion requirements.

For a plurality of roadbed box groups, besides providing foundation bearing for the annular track, the roadbed box groups can also provide foundation support for tracks of other forms. Referring to fig. 7, in some embodiments, the rail chassis assembly further includes a linear rail 90. At least one of the plurality of ballast tank groups 10 is arranged as a third bottom base of the track type crane under the straight rail operating condition of the track type crane, and the linear rail 90 is provided on an upper surface of the third bottom base in the first direction. The first direction is the extension direction of the linear rail 90.

The plurality of roadbed boxes in the at least one roadbed box group 10 are arranged along the first direction, and the relative directions of the long sides and the short sides of two adjacent roadbed boxes are opposite and are perpendicular to the first direction. In fig. 7, the foundation boxes 10a with the short sides on the left and the long sides on the right and the foundation boxes 10b with the short sides on the right and the long sides on the left are alternately arranged, and since the angles of the two sides of each foundation box with respect to the long sides and the short sides can be matched with the angles of the two sides of the adjacent foundation boxes with respect to the short sides and the long sides, foundation bearing of the linear rail 90 can be achieved so that the rail-type crane can linearly move along the linear rail 90.

The track chassis assembly disclosed by the invention can be suitable for various track cranes. Referring to fig. 8, the present disclosure also provides an embodiment of a rail-mounted crane. The rail-mounted crane in this embodiment includes: a rail chassis assembly of any of the foregoing, a plurality of trolley assemblies 30, an equipment platform 40, a power drive assembly 50 and a hoist assembly.

In fig. 1, 4, 5 and 8, a plurality of trolley assemblies 30 are at least partially disposed on the rail chassis assembly. The equipment platform 40 is connected to the plurality of trolley assemblies 30. A power drive assembly 50 is disposed on the equipment platform 40 and is coupled to the plurality of trolley assemblies 30 and is configured to drive movement of each trolley assembly 30 disposed on the track chassis assembly. The hoist assembly is disposed on the equipment platform 40 and is coupled to the power drive assembly 50.

Referring to fig. 8, in some embodiments, a hoist assembly comprises: boom system 60, counterweight system 70, and work system 80. The boom system 60 may comprise a boom having at least one standard boom section, which may be a main boom, an auxiliary boom, a super boom, or the like. The shape of the arm support can be an A-shaped or parallel structure. For different working conditions, the arm supports with different lengths can be adopted, and the length of the arm support can be realized by adjusting the number of standard arm sections. The structure and dimensions of each standard arm segment can also be adjusted as desired. The counterweight system 70 provides weight to offset the sling load and prevent the boom system from tipping over. The operation system 80 may provide control of the luffing, heavy lifting, etc. operation of the boom system.

Referring to fig. 9, in some embodiments, a standard arm segment includes at least one set of load-bearing chord structural units 61 and an attachment joint 62. The load-bearing chord structure unit 61 is a truss rod structure, and a set of load-bearing chord structure units 61 may include a plurality of load-bearing chord structure units 61 arranged side by side. The connection joints 62 are disposed at least at one end of the at least one set of load-bearing chord structural units 61 to connect the respective load-bearing chord structural units 61 and to connect with adjacent standard arm sections or equipment platforms or the like.

The length and cross-sectional dimensions of a standard arm segment may be determined by the number of sets of load-bearing chord structural units 61 included in the standard arm segment and the arrangement of each set of load-bearing chord structural units 61, respectively. Different groups of the bearing chord structure units 61 are arranged in sequence along the length direction of the standard arm section, and the bearing chord structure units 61 of the same group are arranged side by side in at least one direction of the section perpendicular to the length direction of the standard arm section. If the standard arm section length is long, lacing bars may be arranged between the load-bearing chord structural units 61 for reinforcement.

In fig. 8, when the track-mounted crane is in the ring rail operation condition of the maximum tonnage of the tonnage, each group of the load-carrying chord structural units 61 comprises four load-carrying chord structural units 61 arranged in a shape of a Chinese character 'tian' on the section perpendicular to the length direction of the standard arm section. The arrangement mode can ensure that the arm support system obtains good rigidity and bearing capacity.

Under the operation condition that the track crane is in the ring rail with at least partial tonnage except the maximum tonnage in the tonnage, each group of bearing type chord structure units 61 comprises one or two bearing type chord structure units 61 which are arranged on the section which is vertical to the length direction of the standard arm section. The hoisting requirements of cranes with different tonnage can be met by reducing the number of each group of bearing type chord member structural units in the standard arm sections, and cranes with various models can be developed by one ultra-large crane, so that the operating cost is effectively reduced.

The plurality of trolley assemblies 30 may be divided into at least one front trolley assembly and at least one rear trolley assembly according to the arrangement positions thereof. For example, in fig. 1, two dollies on the left side of the looped rail are both rear dolly assemblies, and two dollies on the right side are both front dolly assemblies. The front carriage assembly may be disposed on the underside of the main arm and the rear carriage assembly may be disposed on the underside of the counterweight system 70.

Referring to fig. 1, in some embodiments, a trolley assembly 30 includes a set of rail wheels 31, a first trolley gimbal 32, and a second trolley gimbal 33. A first link 34 may be provided between the first carriage counterbalance block 32 and the second carriage counterbalance block 33, and a second link 35 may be provided between the second carriage counterbalance block 33 and the equipment platform 40.

The plurality of trolley assemblies 30 are movably disposed on the plurality of endless tracks 20 of the track chassis assembly under a ring rail operating condition of the rail-mounted crane at a maximum tonnage of the plurality of tonnages. The track wheel set 31 of each trolley assembly 30 is connected to the first trolley balance frame 32 and is located at the lower side of the first trolley balance frame 32. The second bogie balance frame 33 is connected to both of the two first bogie balance frames 32 running on the adjacent two endless tracks 20 or the two endless tracks 20 spaced by at least one endless track 20, and is located on the upper side of the two first bogie balance frames 32.

With reference to the principle of force transfer shown in fig. 6, the load F from the upper side acts on the second carriage balance frame 33, the second carriage balance frame 33 divides the load F into two F/2 by its two connected first carriage balance frames 32 located on the two endless tracks, and the first carriage balance frames 32 in turn divide the load F/2 into two track wheel sets 31 each F/4 located on the same endless track. This achieves a load sharing effect of the plurality of endless tracks.

Under the operation condition that the track type crane is in other ring rails with at least part of tonnage except the maximum tonnage in the tonnage, a part of the trolley assemblies 30 is movably arranged on at least two ring rails 20 of the track chassis assembly. The track wheel set 31 of each trolley assembly 30 is connected to the first trolley balance frame 32 and is located at the lower side of the first trolley balance frame 32. The equipment platform 40 may be directly connected to the first trolley frame 32. Can simplify the arrangement of platform truck subassembly like this according to operating mode needs to match the ring rail under the current operating mode and arrange, thereby improve operation economic nature. In other embodiments, the equipment platform 40 may also be coupled to the first trolley frame 32 via the second trolley frame 33.

Through the description of the above embodiments, the track chassis assembly and the track crane of the present disclosure have at least one of the following technical effects:

by arranging the annular track and the roadbed box group, the track type crane with larger tonnage can obtain better structure and ground load balancing effect, and the foundation treatment difficulty and the chassis matching manufacturing difficulty are reduced, so that the cost is reduced;

through the arrangement of the roadbed box group and the annular track, cranes of various models can be expanded from the whole track type crane, the requirements of more working conditions are met, and the utilization rate of components is improved;

through a plurality of roadbed box groups with different radiuses, the requirement of foundation pavement under various working conditions can be met during whole machine expansion, and the use of additional roadbed boxes is reduced;

through the design of the bearing type chord member structure unit in the standard arm section, the arm support system can meet the bearing requirement of a larger tonnage, and can be adjusted in the process of expansion so as to meet the requirements of more working conditions, reduce the weight and improve the utilization rate of parts.

Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. 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 present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims (11)

1. A rail chassis assembly for a rail-mounted crane convertible to a plurality of tonnages, comprising:

the roadbed box comprises a plurality of roadbed box groups (10), each roadbed box group (10) comprises a plurality of roadbed boxes which can be arranged into a fan-shaped or circular ring shape along the circumferential direction, and the radius of the fan-shaped or circular ring shape corresponding to each roadbed box group (10) is different; and

a plurality of annular tracks (20), each annular track (20) being in the shape of a closed or non-closed circular ring;

wherein, under the ring rail operation condition that the track type crane is at the maximum tonnage in the tonnage, the plurality of roadbed box groups (10) are arranged into a first bottom foundation of the track type crane, the plurality of roadbed box groups (10) are concentrically and radially arranged, and the plurality of annular rails (20) are concentrically arranged on the upper surface of the first bottom foundation;

under the operation condition that the track type crane is in other ring rails of at least partial tonnage except the maximum tonnage in the tonnage, at least part of roadbed boxes (10) of the plurality of roadbed box groups (10) are arranged into a second bottom foundation of the track type crane, and a part of ring rails (20) in the plurality of ring rails (20) is concentrically arranged on the upper surface of the second bottom foundation.

2. The rail-based chassis assembly of claim 1, wherein a predetermined gap or adjustment plate is provided between at least some adjacent roadbed bins of a portion of the plurality of roadbed bin groups (10) under a ring rail operating condition of the rail-based crane at least some other tonnage than the maximum tonnage of the plurality of tonnages.

3. The rail chassis assembly of claim 2, wherein the conditioning plate is at least one roadbed box of another part of the plurality of roadbed box groups (10).

4. The rail chassis assembly of claim 1, further comprising:

a linear track;

wherein, under the track formula hoist is in straight rail operating condition, at least one road bed case group (10) in a plurality of road bed case group (10) are arranged into the third bottom basis of track formula hoist, just the straight line form track sets up along first direction the upper surface on third bottom basis, a plurality of road bed cases in at least one road bed case group (10) are followed first direction arranges, and the relative direction of the long limit of two adjacent road bed cases and minor face is opposite and all perpendicular to first direction.

5. The rail chassis assembly of claim 1, wherein the plurality of endless tracks (20) comprises four endless tracks (20);

wherein the four endless tracks (20) are concentrically arranged on the upper surface of the first bottom foundation in an endless track operating condition of the track-type crane at a maximum tonnage of the plurality of tonnages;

under the operation working condition that the track type crane is in other ring rails with at least partial tonnage except the maximum tonnage in the tonnage, any three, any two or any one of the four ring rails (20) is arranged on the upper surface of the second bottom foundation.

6. The rail chassis assembly of claim 5, wherein the plurality of roadbed box groups (10) comprise: an inner road base box group (11) and an outer road base box group (12);

wherein, under the working condition that the track-mounted crane is in the circular track operation of the maximum tonnage in the tonnage, the inner roadbed box group (11) and the outer roadbed box group (12) are spliced to form the first bottom foundation, and the inner roadbed box group (11) is positioned at the inner side of the outer roadbed box group (12);

and under the operating condition that the track type crane is in other ring rails with at least partial tonnage except the maximum tonnage in the tonnage, the inner roadbed box group (11) or the outer roadbed box group (12) is spliced into the second bottom foundation.

7. A rail-mounted crane, comprising:

the rail chassis assembly of any of claims 1 to 6;

a plurality of trolley assemblies (30) disposed at least partially on the rail chassis assemblies;

a device platform (40) connected to the plurality of trolley assemblies (30);

a power drive assembly (50) disposed on the equipment platform (40) and connected to the plurality of trolley assemblies (30) and configured to drive movement of each trolley assembly (30) disposed on the rail chassis assembly; and

and the hoisting assembly is arranged on the equipment platform (40) and is connected with the power driving assembly (50).

8. A track crane according to claim 7, characterized in that the trolley assembly (30) comprises a set of track wheels (31), a first trolley balance frame (32) and a second trolley balance frame (33);

under the operation condition of the circular rail of the rail crane in the maximum tonnage of the tonnage, the trolley assemblies (30) are movably arranged on the circular rails (20) of the rail chassis assembly, a rail wheel set (31) in each trolley assembly (30) is connected with the first trolley balancing frame (32) and is positioned at the lower side of the first trolley balancing frame (32), and the second trolley balancing frame (33) is connected with two first trolley balancing frames (32) which operate on two adjacent circular rails (20) or two circular rails (20) which are separated by at least one circular rail (20) and is positioned at the upper sides of the two first trolley balancing frames (32).

9. The rail-mounted crane according to claim 8, wherein, in the operating condition of the rail-mounted crane in the ring rail of at least some other tonnage than the maximum tonnage among the tonnage, some trolley assemblies (30) of the plurality of trolley assemblies (30) are movably disposed on at least two ring rails (20) of the rail chassis assembly, a rail wheel set (31) of each trolley assembly (30) is connected with the first trolley balance frame (32) and is located at the lower side of the first trolley balance frame (32), and the equipment platform (40) is directly connected with the first trolley balance frame (32) or is connected with the first trolley balance frame (32) through the second trolley balance frame (33).

10. The rail crane of claim 7, wherein the hoist assembly comprises: a boom system (60), a counterweight system (70) and an operation system (80); the arm support system (60) comprises an arm support with at least one standard arm section, the standard arm section comprises at least one group of bearing type chord structure units (61) and a connecting joint (62), the connecting joint (62) is arranged at least one end of the at least one group of bearing type chord structure units (61), and the length and the cross section size of the standard arm section are determined by the number of the bearing type chord structure units (61) included in the standard arm section and the arrangement mode of each group of bearing type chord structure units (61).

11. A rail-mounted crane according to claim 10, characterized in that, in a ring rail operating condition of the rail-mounted crane in the maximum tonnage of the plurality of tonnages, each group of load-bearing chord structural units (61) comprises four load-bearing chord structural units (61) arranged in a "field" shape in a cross section perpendicular to the length direction of the standard jib portion; under the operation condition that the track crane is in the ring rail with at least partial tonnage except the maximum tonnage in the tonnage, each group of bearing type chord member structure units (61) comprises one or two bearing type chord member structure units (61) which are arranged on the section which is vertical to the length direction of the standard arm section.

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