CN113184697A

CN113184697A - Track walking assembly and circular track crane

Info

Publication number: CN113184697A
Application number: CN202110465634.4A
Authority: CN
Inventors: 田洪杰; 章琢; 赵江平; 纪志刚; 潘丹丹
Original assignee: Construction Machinery Branch of XCMG
Current assignee: Construction Machinery Branch of XCMG
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-07-30

Abstract

The disclosure relates to a track walking assembly and a circular track crane. The track walking assembly is used for running on a track assembly comprising an arc-shaped track and bearing hoisting machinery. Track walking subassembly includes mated track pinch roller subassembly and the first platform truck of being connected with mated track pinch roller subassembly, and wherein, track pinch roller subassembly includes: the box-type wheel carrier is rotatably connected with the first trolley and is provided with a first top plate, a first bottom plate and two first side plates; the two groups of pressing wheels are respectively and rotatably arranged on the two first side plates, are positioned on the outer sides of the two first side plates, and are configured to roll on the upper surfaces of the arc-shaped tracks so as to drive the box-shaped wheel frames to move along the arc-shaped tracks and bear loads in the vertical direction; and at least one limiting wheel which is rotatably arranged on the first base plate, is positioned at the lower side of the first base plate and is configured to roll on the side surface of the arc-shaped track so as to bear the side load. The embodiment of the disclosure can meet the lateral bearing requirement of hoisting machinery with a larger tonnage.

Description

Track walking assembly and circular track crane

Technical Field

The disclosure relates to the field of engineering machinery, in particular to a track walking assembly and a circular track crane.

Background

At present, in the hoisting industry, the requirement on the hoisting weight of a crane is continuously increased. Conventional cranes have difficulty meeting the hoisting requirements of oversized modules of greater weight. In order to meet the hoisting requirement, a circular rail crane is produced. In some related art, the weight of the crane and the hoisted object is transferred to the loop rail through the pinch rollers, and the loop rail is transferred to the roadbed box and further to the ground.

In some related art, a circumferential surface of the pressing wheel is in press contact with the endless track, and annular rims protruding outward in a radial direction are formed at both side edges of the circumferential surface, respectively. The pinch roller realizes the limiting function of the pinch roller on the circular track through two circular rims.

Disclosure of Invention

The inventor researches and discovers that the wheel rim structure of the pinch roller in the related art is complex in design and processing, has small bearing capacity and cannot bear large side load, so that the pinch roller is generally used for a portal crane with small tonnage and is difficult to apply to a crane with large tonnage (such as a ring rail crane and the like).

In view of this, the embodiments of the present disclosure provide a track traveling assembly and a circular track crane, which can meet the requirement of a hoisting machine with a large tonnage in the aspect of lateral bearing.

In an aspect of the present disclosure, a rail-mounted assembly is provided for operating on a rail assembly including an arc-shaped rail, and bearing a hoisting machine, the rail-mounted assembly includes a paired rail pinch roller assembly and a first trolley connected to the paired rail pinch roller assembly, wherein the rail pinch roller assembly includes:

the box-shaped wheel carrier is rotatably connected with the first trolley and is provided with a first top plate, a first bottom plate and two first side plates;

the two groups of pressing wheels are respectively and rotatably arranged on the two first side plates, are positioned at the outer sides of the two first side plates, and are configured to roll on the upper surfaces of the arc-shaped tracks so as to drive the box-shaped wheel carrier to move along the arc-shaped tracks and bear loads in the vertical direction; and

at least one limiting wheel is rotatably arranged on the first base plate and positioned at the lower side of the first base plate, and is configured to roll on the side surface of the arc-shaped track so as to bear side load.

In some embodiments, the arcuate track has parallel double rails, the at least one spacing wheel being located between the double rails and configured to be clearance fit with the double rails.

In some embodiments, each group of pinch rollers comprises at least two pinch rollers which are arranged at intervals along the front and back directions of the box-shaped wheel frame; and/or the at least one limiting wheel comprises at least two limiting wheels which are arranged at intervals along the front and back direction of the box-shaped wheel frame.

In some embodiments, the number of the pressing wheels in each group of pressing wheels is 2, and the number of the limiting wheels is 2.

In some embodiments, the first base plate has a mounting hole, the track roller assembly further includes a connecting shaft, a limiting sleeve, and a limiting plate, the connecting shaft is inserted into the mounting hole, the limiting sleeve is sleeved on a lower end of the connecting shaft, the limiting wheel is sleeved on an outer periphery of the limiting sleeve, and the limiting plate is located on one side of the limiting wheel away from the connecting shaft and axially limits the limiting wheel together with the limiting sleeve.

In some embodiments, the track roller assembly further comprises a segment-shaped protrusion structure fixedly connected or fixedly formed on the first top plate; the first carriage includes:

a first box-type structure having a second top panel, a second bottom panel, and two second side panels;

the two spherical concave structures are arranged on the second bottom plate and are respectively in rotatable limit fit with the segment-shaped convex structures of the paired track pinch roller assemblies; and

a first reinforcement rib provided between the second top panel and the second side panel.

In some embodiments, the thickness of the first box-shaped structure in the vertical direction, which is respectively connected with the two ends of the paired track pinch roller assemblies, is smaller than the thickness of the middle part of the first box-shaped structure in the vertical direction.

In some embodiments, the first trolley further comprises:

the first circular fitting piece is positioned or formed on the upper surface of the second top plate;

a limiting convex edge which is positioned or formed on the upper surface of the second top plate and positioned at the radial outer side of the first circular fitting piece,

the orthographic projection of the first reinforcing rib plate on the second top plate is at least partially overlapped with the orthographic projection of the limiting convex edge on the second top plate.

In some embodiments, the rail walking assembly further comprises:

the paired first connecting seats are respectively and rotatably connected with the paired first trolleys;

a second carriage swingably connected to the pair of first connection seats; and

and the second connecting seat is connected with the second trolley in a swinging manner.

In some embodiments, the first trolley comprises: the first connecting seat is in surface contact fit with the first circular matching pieces of the first trolleys in pairs.

In some embodiments, the first connector mount comprises:

a third base plate;

two third side plates which are connected to the upper surface of the third bottom plate perpendicular to the third bottom plate and have first shaft holes for connecting with the second trolley; and

a second reinforcement rib provided between the third floor and the third side panel.

In some embodiments, the third side plate has a first thickened structure in an area adjacent to the first shaft hole.

In some embodiments, the second trolley comprises:

a second box-type structure having a fourth top panel, a fourth bottom panel, and two sets of fourth side panels,

each group of fourth side plates is provided with two second shaft holes used for being connected with the paired first connecting seats and a third shaft hole used for being connected with the second connecting seats.

In some embodiments, the region of the fourth side plate adjacent to the second axle hole has a second thickened structure; and/or the region of the fourth side plate adjacent to the third shaft hole is provided with a third thickened structure.

In some embodiments, the second connection socket comprises:

a fifth top plate;

two fifth side plates which are connected to the lower surface of the fifth top plate perpendicularly to the fifth top plate and have fourth shaft holes for connecting the second carriage; and

the third box-type structure is arranged on the lower surface of the fifth top plate and is positioned between the two fifth side plates;

and a third reinforcing rib provided between a lower surface of the fifth roof and the third box-shaped structure.

In some embodiments, the second connection receptacle further comprises: and the second circular fitting piece is positioned on or formed on the upper surface of the fifth top plate, is configured to bear the hoisting machine and is in surface contact fit with the hoisting machine.

In some embodiments, a region of the fifth side plate adjacent to the fourth axle hole has a fourth thickened structure.

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

a track assembly; and

the track running assembly is described above.

Therefore, according to the embodiment of the disclosure, by arranging the two groups of pinch rollers and the at least one limiting wheel on the box-shaped wheel carrier of the track pinch roller assembly, high bearing capacity can be realized in the vertical direction, and the requirement of a hoisting machine with a large tonnage on lateral bearing can be met.

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 structural view of a track assembly on which some embodiments of a track running assembly according to the present disclosure run;

FIG. 2 is a schematic diagram of a track puck assembly on a track assembly in some embodiments of a track running assembly according to the present disclosure;

FIGS. 3 and 4 are schematic diagrams of the construction of a track roller assembly at different viewing angles in some embodiments of a track running assembly according to the present disclosure;

fig. 5 and 6 are schematic structural views of a first trolley in some embodiments of a tracklaying assembly according to the present disclosure, respectively, from different perspectives;

FIG. 7 is a schematic structural view of other embodiments of a track assembly according to the present disclosure operating on a track assembly;

FIG. 8 is a schematic structural view of a first mount in some embodiments of a tracklaying assembly according to the present disclosure;

FIG. 9 is a schematic structural view of a second trolley in some embodiments of the tracklaying assembly according to the present disclosure;

fig. 10 is a schematic structural view of a second connection seat in some embodiments of the track running assembly 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.

Fig. 1 is a schematic structural view of a track assembly on which some embodiments of a track running assembly according to the present disclosure operate. Referring to fig. 1, in some embodiments, a track-bound assembly is used to run on a track assembly 10 comprising an arcuate track 11 and carries a lifting machine. The track assembly 10 may include a linear track, etc., in addition to the arcuate track 11. The arc-shaped rail 11 may be a semi-circular rail or a circular rail. The hoisting machine may include a main hoisting arm, a hoisting mechanism, a swing mechanism, a power mechanism, a counterweight, a spreader, etc., and some hoisting machines may also include a super-hoisting device, an auxiliary boom, etc., which are not described herein again. In this embodiment, the track assembly can include a pair of track roller assemblies 20 and a first trolley 30 coupled to the pair of track roller assemblies 20.

Figure 2 is a schematic diagram of a track puck assembly on a track assembly in some embodiments of a track running assembly according to the present disclosure. Referring to FIG. 2, in some embodiments, track puck assembly 20 includes: a box-shaped wheel frame 21, two groups of pressing wheels 22 and at least one limiting wheel 23. The box-shaped wheel carrier 21 is rotatably connected to the first carriage 30, and has a first top plate, a first bottom plate, and two first side plates. The two groups of pressing wheels 22 are respectively rotatably arranged on the two first side plates, are positioned outside the two first side plates, and are configured to roll on the upper surface of the arc-shaped track 11 so as to drive the box-shaped wheel carrier 21 to move along the arc-shaped track 11 and bear a load in the vertical direction. At least one limiting wheel 23 is rotatably disposed on the first base plate, is located at the lower side of the first base plate, and is configured to roll on the side surface of the arc-shaped rail 11 to bear a side load.

The box-type wheel carrier 21 is used for bearing the load from the upper side, and the box-type structure adopted by the carrier has stronger bearing capacity. Two sets of rollers 22 are mounted on the box-type wheel carriage 21 and transmit vertical loads to the surface of the curved track 11 and further to the ground via the roadbed box. When the track roller assembly 20 turns along the curved track 11, the side load during the turn is completely carried by the spacing wheels 23 of this embodiment, compared to the track roller of the related art. Therefore, the structural complexity of the track pressing wheel is effectively reduced, the pressing wheel or the limiting wheel is more convenient to manufacture, larger bearing capacity can be realized, and the bearing requirement of a hoisting machine with a larger tonnage when the hoisting machine runs along the track can be effectively met.

In fig. 2, the arcuate rail 11 has parallel double rails, between which the at least one spacing wheel 23 is located and is configured to be clearance fitted. The diameter of the limiting wheel 23 can be slightly smaller than the gap of the double tracks, so that the assembly and disassembly are more convenient while the bearing is effective. Compare and press from both sides orbital structural style in two spacing wheels, the spacing wheel structure that lies in between the double track in figure 2 is more succinct, is convenient for make and install. In other embodiments, the spacing wheels may be disposed outboard of the dual rails.

Figures 3 and 4 are schematic diagrams of the construction of a track puck assembly in accordance with some embodiments of the track running assemblies of the present disclosure from different perspectives, respectively. Referring to fig. 3 and 4, in some embodiments, each set of wheels 22 includes at least two wheels 22 spaced apart in the front-to-rear direction of the box-shaped wheel frame 21. The two sets of pinch rollers 22 may be symmetrically arranged with respect to the box-shaped wheel frame 21. The at least one limiting wheel 23 comprises at least two limiting wheels 23 which are arranged at intervals along the front-back direction of the box-shaped wheel carrier 21. In other embodiments, only one limiting wheel 23 may be arranged on the box-type wheel frame 21.

In FIGS. 3 and 4, the number of wheels 22 in each set of wheels 22 is 2, and the number of wheels 23 is 2. This ensures on the one hand a good vertical and lateral bearing effect and on the other hand an easier cooperation with the curved track 11.

Referring to fig. 3, in some embodiments, the first base plate has mounting holes 213. The track puck assembly 20 also includes a connecting shaft 251, a retaining sleeve 252, and a retaining plate 253. The connecting shaft 251 is inserted into the mounting hole 213, the limiting sleeve 252 is sleeved at the lower end of the connecting shaft 251, the limiting wheel 23 is sleeved on the periphery of the limiting sleeve 252, and the limiting plate 253 is located on one side of the limiting wheel 23, which is far away from the connecting shaft 251, and axially limits the limiting wheel 23 together with the limiting sleeve 252.

Track puck assembly 20 can be operated using one of a number of drive schemes (e.g., motor drive, hydraulic drive, pneumatic drive, etc.). In fig. 4, a plurality of line holes 211 and 212 for passing hydraulic lines or electric cables may be provided in the box-type wheel frame 21. In order to avoid interference of the pipeline on the pressing wheel and the limiting wheel, pipeline holes are preferably formed in the end faces of the first top plate and the box-type wheel frame 21 in the length direction.

Fig. 5 and 6 are schematic structural views of a first trolley in some embodiments of a tracklaying assembly according to the present disclosure from different perspectives, respectively. Referring to fig. 4-6, in some embodiments, track puck assembly 20 further includes a segment-shaped raised structure 24 that is fixedly attached or fixedly formed on the first top plate. The first carriage 30 includes: a first box-shaped structure, two spherical concave structures 35 and a first reinforcing rib plate 36. The first box-type structure has a second top panel 31, a second bottom panel 33 and two second side panels 32. The two spherical concave structures 35 are disposed on the second base plate 33 and are in rotatable limit fit with the segment-shaped convex structures 24 of the paired track pressing wheel assemblies 20, respectively. The first reinforcement rib 36 is provided between the second top plate 31 and the second side plate 32.

First box structure possesses good bearing capacity, simple structure, and the welding is convenient. The plurality of first reinforcing ribs 36 may be provided, and may play a role of reinforcing the first box-shaped structure, thereby further improving the load-bearing capacity of the first carriage 30. The segment-shaped protruding structures 24 in the paired track pinch roller assemblies 20 can be in spherical hinge fit with the two spherical concave structures 35 arranged on the second base plate 33, so that a more flexible bearing angle can be realized when the track traveling assembly operates.

In fig. 5, the thickness of the first box-shaped structure connecting the two ends of the pair of track roller assemblies 20 in the vertical direction is smaller than the thickness of the middle of the first box-shaped structure in the vertical direction. The middle part of the structure has smaller deformation when bearing the load in the vertical direction and has stronger bearing capacity. For example, the two side plates 32 may each have a shape that is higher in the middle and is tapered toward both ends, so that the middle of the second top plate 31 is flat and extends obliquely downward toward both ends.

Referring to fig. 5 and 6, in some embodiments, the first trolley 30 further comprises: a first circular fitting 34 and a stop flange 37. A first circular fitting 34 is located or formed on the upper surface of the second top plate 31. The position-limiting convex edge 37 is located or formed on the upper surface of the second top plate 31 and is located at the radial outer side of the first circular fitting piece 34. The first circular fitting 34 can be connected directly to the hoisting machine or via another trolley. The retaining flange 34 serves to retain the parts connected to the first circular fitting 34.

The orthographic projection of the first reinforcing rib 36 on the second top plate 31 at least partially overlaps with the orthographic projection of the limiting flange 37 on the second top plate 31. This enables the first reinforcing rib 36 to achieve not only the reinforcing effect of the first box-shaped structure but also the reinforcing effect of the position-restricting collar 37. Accordingly, the extension portion 311 can be formed outward from the second top plate 31, and the position-limiting flanges 37 and the first reinforcing ribs 36 can be respectively provided on the upper and lower surfaces of the extension portion 311, so that the size of the first carriage 30 can be reduced, and the good load-bearing capacity of the first carriage can be ensured.

Fig. 7 is a schematic structural view of other embodiments of a track running assembly according to the present disclosure running on a track assembly. In some embodiments, the first trolley 30 may be directly coupled to the hoist machine. This is suitable for the track running requirement of the circular track crane with smaller tonnage. For larger tonnage ring track cranes, more tracks and more track roller assemblies may be used to further increase the load carrying capacity of the track assemblies. For example, two track pinch roller assemblies are respectively arranged on two adjacent arc-shaped tracks, and a first trolley is respectively adopted to connect the two track pinch roller assemblies. And the two first trolleys on the two adjacent arc-shaped rails can be connected through the second trolley, and the second trolley is connected with the hoisting machine. This results in a larger support area and load carrying capacity.

Referring to fig. 7, in some embodiments, the rail walking assembly further comprises: a pair of first coupling seats 40, a second trolley 50 and a second coupling seat 60. The pair of first docking cradles 40 are rotatably coupled to the pair of first carriages 30, respectively. The second carriage 50 is swingably connected to the pair of first connecting seats 40. The second link holder 60 is swingably connected to the second carriage 50. The axis of rotation of the rotatable connection of the first connection socket 40 to the first trolley can here be perpendicular to the surface of the first circular counterpart 34. The swing axis of the second cart 50 and the first link base 40, which are swingably connected, and the swing axis of the second link base 60 and the second cart 50, which are swingably connected, may both be perpendicular to the side plate surface of the second cart.

Fig. 8 is a schematic structural view of a first connection block in some embodiments of a tracklaying assembly according to the present disclosure. Referring to fig. 5 and 7, in some embodiments, the first trolley 30 includes: a first box-shaped structure having a second top plate 31, a second bottom plate 33 and two second side plates 32, and a first circular fitting member 34 located or formed on the upper surface of the second top plate 31, the first connecting seat 40 being in surface contact engagement with the first circular fitting member 34 of the first trolley 30 in pair. The force transmission structure with the surface contact fit is more reliable.

Referring to fig. 8, in some embodiments, the first connector housing 40 includes: a third bottom panel 41, two third side panels 42, and a second reinforcing rib 43. The two third side plates 42 are attached to the upper surface of the third bottom plate 41 perpendicularly to the third bottom plate 41, and have first shaft holes 421 for connecting with the second carriage 50. The second reinforcement rib 43 is provided between the third bottom plate 41 and the third side plate 42, and the force transmitting capability of the third side plate 42 can be effectively improved.

The first axle hole 421 can be used to pass through the pin shaft to realize the rotatable connection, and in order to increase the pressure resistance of the first axle hole 421, a first thickened structure 422 is preferably provided on the third side plate 42 in the area adjacent to the first axle hole 421.

Fig. 9 is a schematic structural view of a second trolley in some embodiments of the tracklaying assembly according to the present disclosure. Referring to fig. 9, in some embodiments, the second trolley 50 includes: a second box-type structure. The second box-type structure has a fourth top panel 51, a fourth bottom panel 54, and two sets of

fourth side panels

52, 53. Each set of fourth side panels may comprise a fourth side panel 53 at the middle and a fourth side panel 52 at both ends. The fourth side plate 52 has two second shaft holes 521 for connecting with the pair of first connecting seats 40, and the fourth side plate 53 has a third shaft hole 531 for connecting with the second connecting seat 60.

The second box-type structure has a strong load-bearing capacity and is more convenient to manufacture. The thickness of the middle part of the second box-shaped structure in the vertical direction may be higher than the thickness of the two ends in the vertical direction to obtain a stronger bending resistance.

The second axle hole 521 and the third axle hole 531 may be used for the rotatable connection through the pin shaft, and in order to improve the pressure resistance of the second axle hole 521, a second thickened structure 522 is preferably provided on the fourth side plate 52 adjacent to the second axle hole 521. In order to increase the pressure resistance of the third axial hole 531, a third thickened structure 532 is preferably provided on the fourth side plate 53 in the area adjacent to the third axial hole 531. In other embodiments, the connecting assemblies may be disposed across two arc tracks of one or more arc tracks, for example, the connecting assemblies are disposed on the first arc track and the third arc track, or the connecting assemblies are disposed on the second arc track and the fourth arc track, so that spanning of different tons is achieved, and the implementation range is wider.

Fig. 10 is a schematic structural view of a second connection seat in some embodiments of the track running assembly according to the present disclosure. Referring to fig. 10, in some embodiments, second connection holder 60 includes: a fifth top panel 61, a third box-type structure 65, two fifth side panels 62, and a third reinforcing rib 64. The two fifth side plates 62 are connected to the lower surface of the fifth top plate 61 perpendicular to the fifth top plate 61, and have fourth shaft holes 621 for connecting with the second carriage 50. A third box-type structure 65 is provided on the lower surface of the fifth top panel 61 and between the two fifth side panels 62. A third reinforcing rib 64 is provided between the lower surface of the fifth top plate 61 and the third box-shaped structure 65.

The bearing capacity of the second connecting seat can be improved through the third box-type structure 65, force transmission is achieved through the fifth side plate 62, the structure is simple, and assembly and disassembly are convenient. The third reinforcing rib 64 can further improve the load-bearing capacity of the second coupling seat.

In fig. 10, the second connecting holder 60 further includes: and a second circular fitting member 63 which is positioned or formed on the upper surface of the fifth top plate 61 and is configured to bear the hoisting machine and be in surface contact fit with the hoisting machine. The second circular fitting 63 can be rotatably connected to the hoisting machine, for example, in fig. 7, a rotating shaft can be formed or mounted on the second circular fitting 63.

The fourth axle hole 621 can be used for passing through the pin shaft to realize the rotatable connection, and in order to increase the pressure resistance of the fourth axle hole 621, a fourth thickened structure 622 is preferably arranged on the fifth side plate 62 in the area adjacent to the fourth axle hole 621.

The track walking assembly can be used for various hoisting machines using the track assembly, such as a circular track crane. Accordingly, the present disclosure also provides a loop track crane comprising: rail assembly 10 and embodiments of any of the aforementioned rail running assemblies.

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

1. The utility model provides a rail running assembly for move on rail set spare (10) including arc track (11), and bear hoisting machinery, its characterized in that, including mated track pinch roller assembly (20) and with first platform truck (30) that mated track pinch roller assembly (20) are connected, wherein, track pinch roller assembly (20) includes:

a box-shaped wheel carrier (21) rotatably connected to the first trolley (30) and having a first top plate, a first bottom plate and two first side plates;

two groups of pinch rollers (22) are respectively and rotatably arranged on the two first side plates, are positioned at the outer sides of the two first side plates, and are configured to roll on the upper surface of the arc-shaped track (11) so as to drive the box-shaped wheel carrier (21) to move along the arc-shaped track (11) and bear a load in the vertical direction; and

at least one limiting wheel (23) is rotatably arranged on the first base plate and is positioned at the lower side of the first base plate and is configured to roll on the side surface of the arc-shaped track (11) so as to bear side load.

2. The rail running assembly according to claim 1, wherein the curved rail (11) has parallel double rails, the at least one spacing wheel (23) being located between the double rails and being configured to be clearance fit with the double rails.

3. The track running assembly according to claim 1, wherein each set of wheels (22) comprises at least two wheels (22) spaced apart in a front-rear direction of the box-shaped wheel carriage (21); and/or the at least one limiting wheel (23) comprises at least two limiting wheels (23) which are arranged at intervals along the front-back direction of the box-shaped wheel carrier (21).

4. Trackrunning assembly according to claim 3, characterized in that the number of press wheels (22) in each set of press wheels (22) is 2 and the number of stopping wheels (23) is 2.

5. The track running assembly according to claim 1, wherein the first base plate has a mounting hole (213), the track roller assembly (20) further comprises a connecting shaft (251), a limiting sleeve (252) and a limiting plate (253), the connecting shaft (251) is inserted into the mounting hole (213), the limiting sleeve (252) is sleeved on the lower end of the connecting shaft (251), the limiting wheel (23) is sleeved on the periphery of the limiting sleeve (252), and the limiting plate (253) is located on one side of the limiting wheel (23) away from the connecting shaft (251) and axially limits the limiting wheel (23) together with the limiting sleeve (252).

6. The track running assembly according to claim 1, wherein the track roller assembly (20) further comprises a segment-shaped protrusion structure (24) fixedly connected or fixedly formed on the first top plate; the first carriage (30) comprises:

a first box-type structure having a second top panel (31), a second bottom panel (33), and two second side panels (32);

the two spherical concave structures (35) are arranged on the second base plate (33) and are in rotatable limit fit with the segment-shaped convex structures (24) of the paired track pinch roller assemblies (20) respectively; and

a first reinforcement rib (36) provided between the second top panel (31) and the second side panel (32).

7. The track running assembly according to claim 6, wherein the thickness of the first box-shaped structure in the vertical direction, which connects the two ends of the pair of track roller assemblies (20), respectively, is smaller than the thickness of the middle of the first box-shaped structure in the vertical direction.

8. The trackrunning assembly according to claim 6, wherein the first trolley (30) further comprises:

a first circular fitting (34) located or formed on the upper surface of the second top plate (31); and

a limiting convex edge (37) which is positioned or formed on the upper surface of the second top plate (31) and positioned at the radial outer side of the first circular fitting piece (34),

wherein the orthographic projection of the first reinforcing rib (36) on the second top plate (31) is at least partially overlapped with the orthographic projection of the limiting convex edge (37) on the second top plate (31).

9. The trackrunning assembly of claim 1, further comprising:

a pair of first coupling seats (40) rotatably coupled with the pair of first carriages (30), respectively;

a second carriage (50) swingably connected to the pair of first connection seats (40); and

and a second connecting seat (60) which is connected with the second trolley (50) in a swinging way.

10. The trackrunning assembly according to claim 9, wherein the first trolley (30) comprises: a first box-shaped structure with a second top plate (31), a second bottom plate (33) and two second side plates (32) and a first circular fitting piece (34) positioned or formed on the upper surface of the second top plate (31), wherein the first connecting seat (40) is in surface contact fit with the first circular fitting piece (34) of the first trolley (30) in pair.

11. The trackrunning assembly according to claim 9, wherein the first connection seat (40) comprises:

a third bottom plate (41);

two third side plates (42) which are connected to the upper surface of the third bottom plate (41) perpendicularly to the third bottom plate (41) and have first shaft holes (421) for connecting with the second trolley (50); and

a second reinforcing rib (43) provided between the third bottom plate (41) and the third side plate (42).

12. Trackrunning assembly according to claim 11, characterized in that the area of the third side plate (42) adjoining the first axle hole (421) has a first thickened structure (422).

13. The trackrunning assembly according to claim 9, wherein the second trolley (50) comprises:

a second box-type structure having a fourth top panel (51), a fourth bottom panel (54) and two sets of fourth side panels (52, 53),

wherein each set of fourth side plates (52, 53) has two second shaft holes (521) for connecting with the pair of first connecting seats (40) and a third shaft hole (531) for connecting with the second connecting seat (60).

14. The running assembly according to claim 13, wherein the fourth side plate (52, 53) has a second thickened structure (522) in the area adjoining the second axle hole (521); and/or the region of the fourth side plate (52, 53) adjoining the third axial hole (531) has a third thickened structure (532).

15. The trackrunning assembly according to claim 9, wherein the second connection mount (60) comprises:

a fifth top plate (61);

two fifth side plates (62) which are connected to the lower surface of the fifth top plate (61) perpendicularly to the fifth top plate (61) and have fourth shaft holes (621) for connecting to the second carriage (50); and

a third box-shaped structure (65) arranged on the lower surface of the fifth top plate (61) and between the two fifth side plates (62);

and a third reinforcing rib (64) provided between the lower surface of the fifth ceiling (61) and the third box-shaped structure (65).

16. The trackrunning assembly of claim 15, wherein the second connection mount (60) further comprises: and a second circular fitting piece (63) positioned on or formed on the upper surface of the fifth top plate (61) and used for bearing the hoisting machinery and being in surface contact fit with the hoisting machinery.

17. Tracklaying assembly according to claim 15, characterized in that the area of the fifth side plate (62) adjoining the fourth axle hole (621) has a fourth thickened structure (622).

18. A loop track crane, comprising:

a track assembly (10); and

the walking rail assembly of any one of claims 1 to 17.