A circulating container lifting system

Abstract

The utility model provides a kind of circulation formula container lifting appliance system, it includes: double-row to track, double-row crane being movable along double-row to track, and the crane drive component being installed on double-row to track and drive double-row crane relative to double-row to track movement;It further includes: double-row return track being respectively located in the two sides of double-row to track, and respectively for connecting the terminal point of double-row to track and the starting point of double-row return track and connecting the terminal point of double-row return track and the starting point of double-row to track's shift track car component, crane drive component is also installed on double-row return track and drives double-row crane relative to double-row return track movement;Shift track car component respectively transfers double-row crane on the terminal point of double-row to track on the starting point of double-row return track, shift track car component respectively transfers double-row crane on the terminal point of double-row return track on the starting point of double-row to track.Shifts so that system completes the container circulation transport of double-row crane, simple structure.

Description

Technical Field

[0001] This utility model belongs to the field of container spreader technology, and specifically relates to a circulating container spreader system. Background Technology

[0002] In traditional technology, container spreader systems are devices that transport containers from a starting position to a destination. Because only a single double-track is set between the starting and destination positions, a single crane slides back and forth on the single double-track to transport containers. In order to avoid interference between multiple cranes, only one crane slides back and forth on the single double-track from beginning to end. As a result, the working efficiency of container spreader systems is relatively slow and they are not suitable for the ever-increasing demands of container transportation.

[0003] In existing technologies, some double-track systems are designed as circular runways. Because the circular runway is a closed loop, multiple cranes can operate simultaneously on a single double-track, without interfering with each other, significantly improving the efficiency of the container lifting system. However, firstly, the arc diameter at the end of the track needs to be adjusted according to the size of the crane, increasing the footprint of the single double-track. Secondly, since the fully loaded outbound trip for transporting containers and the empty return trip for transporting no containers occur on opposite sides of the same track, the load on both sides of the track is uneven, requiring overall reinforcement of the single double-track to prevent tilting. These features complicate the container lifting system structure and increase its manufacturing cost. Utility Model Content

[0004] The main purpose of this utility model is to provide a circulating container spreader system, specifically a circulating container spreader system that is small in size, simple in structure, low in cost, and capable of reciprocating container lifting at the starting point and the ending point.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A circulating container spreader system, characterized in that it comprises: a double-row forward travel track, a double-row crane movable along the double-row forward travel track, and a crane drive assembly installed on the double-row forward travel track to drive the double-row crane to move relative to the double-row forward travel track. It also includes: double-row return tracks respectively disposed on both sides of the double-row forward track, and a track-shifting vehicle assembly for connecting the end point of the double-row forward track and the start point of the double-row return track, and connecting the end point of the double-row return track and the start point of the double-row forward track. The crane drive assembly is also installed on the double-row return track to drive the double-row crane to move relative to the double-row return track. The crane drive assembly drives the double-row cranes to move from the starting point of the double-row outbound track to the ending point of the double-row outbound track. The track transfer assembly transfers the double-row cranes at the ending point of the double-row outbound track to the starting point of the double-row return track. The crane drive assembly drives the double-row cranes to move from the starting point of the double-row return track to the ending point of the double-row return track. The track transfer assembly transfers the double-row cranes at the ending point of the double-row return track to the starting point of the double-row outbound track.

[0006] As a preferred embodiment of a circulating container spreader system, the rail transfer vehicle assembly includes: at least eight rail transfer vehicles arranged in pairs, each of the rail transfer vehicles connecting two rows of rails on the same side of the double-row forward rails and the double-row return rails; Each of the aforementioned track-shifting vehicles includes: two mounting crossbeams, two fixed longitudinal beams, at least one track-shifting longitudinal beam, two track-shifting mounting beams, and track-shifting sections in the same number as the track-shifting longitudinal beams. Each row of the double-row cranes includes: a crane body, and at least two guide roller assemblies fixed to both ends of the top of the crane body. The guide roller assemblies can move along the double-row forward track or the double-row return track. Two mounting beams are arranged parallel to each other at a distance on the top of the two rows of tracks on the same side of the double-row forward track and the double-row return track, and are perpendicular to the two rows of tracks on the same side of the double-row forward track and the double-row return track. The two rows of tracks on the same side of the double-row forward track and the double-row return track are provided with track shifting notches at the positions between the corresponding two mounting beams. Two fixed longitudinal beams are arranged parallel to each other at a distance from the top of two mounting crossbeams and are perpendicular to the two mounting crossbeams. The two fixed longitudinal beams are located on both sides of the two rows of tracks on the same side of the double-row forward track and the double-row return track. The two moving track mounting beams are respectively installed at both ends on the corresponding fixed longitudinal beams and are located between the two mounting crossbeams and are parallel to the two mounting crossbeams. The sliding track section is fixed at the bottom middle position of the sliding track longitudinal beam. The sliding track longitudinal beam is arranged between the two fixed longitudinal beams and is parallel to the two fixed longitudinal beams. The two ends of the sliding track longitudinal beam are slidably installed on the corresponding sliding track mounting beam. Driving the sliding track longitudinal beam to move the sliding track section between two adjacent sliding track gaps; After the guide roller assembly moves to the position of the track shifting section, it drives the track shifting longitudinal beam to move, causing the track shifting section to move between two adjacent track shifting gaps, thereby enabling the guide roller assembly to switch between the two rows of tracks on the same side of the double-row forward track and the double-row return track.

[0007] As a preferred embodiment of the circulating container spreader system, each of the aforementioned rail-shifting vehicles further includes: two first rails, a lead screw nut, and a first drive motor; Two first tracks are installed on the top of the corresponding moving track mounting beam along the direction of the moving track mounting beam. The bottom surface of the moving track longitudinal beam is provided with first track grooves at both ends. The two first tracks are embedded in the corresponding first track grooves, so that the moving track longitudinal beam can move along the first tracks. The lead screw nut passes through the moving rail longitudinal beam and is installed on the moving rail longitudinal beam. Both ends of the lead screw nut are rotatably installed on the corresponding fixed longitudinal beams. The first drive motor is installed on one of the two fixed longitudinal beams. The first drive motor drives the lead screw nut to rotate, causing the moving rail longitudinal beam to move back and forth between the two fixed longitudinal beams.

[0008] As a preferred embodiment of a circulating container spreader system, the guide roller assembly includes: a guide assembly body and a plurality of first bearings; the cross-sections of the double-row forward track and the double-row return track are I-shaped, the top of the guide assembly body is provided with a guide groove, and the plurality of first bearings are installed on the inner wall of the guide groove; The double-row forward track or the double-row return track extends into the guide groove, and the convex edges on both sides of the bottom of the double-row forward track or the double-row return track are sandwiched between multiple first bearings, so that the guide assembly moves relative to the double-row forward track or the double-row return track through multiple first bearings.

[0009] As a preferred embodiment of a circulating container spreader system, the guide roller assembly includes: a plurality of second bearings; the plurality of second bearings are respectively installed on the two side walls of the guide groove after passing through the two side walls of the guide groove, and the sides of the plurality of second bearings abut against the sides of the bottom two convex edges of the double-row forward track or the double-row return track, and are able to roll along the sides of the bottom two convex edges of the double-row forward track or the double-row return track.

[0010] As a preferred embodiment of a circulating container spreader system, the crane drive assembly includes: multiple drive units, each drive unit including: a mounting base, two rotating shafts, two friction wheels, and a second drive motor; the mounting base is respectively mounted on the top of the double-row forward track and the double-row return track and is perpendicular to the double-row forward track and the double-row return track; the two rotating shafts are rotatably mounted on the mounting base and respectively located on both sides of the double-row forward track or the double-row return track; the two friction wheels are respectively mounted on the corresponding rotating shafts, the crane body is sandwiched between the two friction wheels, and the second drive motor is mounted on the mounting base to drive the two rotating shafts to rotate, the rotating shafts driving their corresponding friction wheels to move the crane body.

[0011] As a preferred embodiment of a circulating container spreader system, the crane drive assembly includes: multiple drive units, each drive unit including: a mounting base, two rotating shafts, a sprocket, a limit wheel, and a second drive motor; the mounting base is respectively mounted on the top of the double-row forward track and the double-row return track and is perpendicular to the double-row forward track and the double-row return track; the two rotating shafts are rotatably mounted on the mounting base and respectively located on both sides of the double-row forward track or the double-row return track; the sprocket is mounted on one of the rotating shafts, the limit wheel is mounted on the other rotating shaft, the crane body has a chain on the side corresponding to the sprocket, the crane body is sandwiched between the sprocket and the limit wheel, the sprocket meshes with the chain, and the second drive motor is mounted on the mounting base and drives one of the two rotating shafts to rotate, the rotating shaft drives its corresponding sprocket to mesh and drive the crane body to move relative to the limit wheel.

[0012] As a preferred embodiment of the circulating container spreader system, the circulating container spreader system further includes: multiple crane auxiliary positioning components, which are respectively installed at both ends of the corresponding double-row forward and return tracks. Each crane auxiliary positioning component includes: an abutment baffle, a telescopic cylinder, a lever, and a one-way rotating plate; the abutment baffle is installed at both ends of the corresponding double-row forward and return tracks; the telescopic cylinder passes through the abutment baffle and is fixed to the abutment baffle; one end of the lever is installed on the telescopic cylinder. The one-way rotating plate is rotatably mounted on the other end of the lever block; both ends of the crane body are provided with positioning baffles at positions corresponding to the crane auxiliary positioning components; the telescopic cylinder extends to drive the lever block to extend the one-way rotating plate toward the positioning baffle; one end of the one-way rotating plate slides past the positioning baffle during rotation; the telescopic cylinder retracts to drive the lever block to abut and pull the other end of the one-way rotating plate against the positioning baffle, so that one end of the crane body abuts against the abutment baffle, thereby moving the guide roller assembly to the position of the track shifting section.

[0013] As a preferred embodiment of a cyclic container spreader system, each crane auxiliary positioning component further includes: a guide slider and a second rail; the guide slider is fixed to the top of the lever, and the second rail is installed at both ends of the corresponding double-row forward rail and double-row return rail. The top of the guide slider is provided with a second rail groove, and the second rail is embedded in the second rail groove, so that the guide slider slides relative to the second rail to guide the telescopic cylinder to drive the lever to move.

[0014] As a preferred embodiment of a circulating container spreader system, the unidirectional rotating plate includes: a guide arc edge in its extension direction and an abutting straight edge in its retraction direction; the positioning baffle includes: an inclined guide plate corresponding to the guide arc edge and a limiting baffle corresponding to the abutting straight edge. The lever is fixed to the guide slider, the lever is provided with a rotation clearance groove, and the one-way rotating plate is rotatably installed on the rear part of the lever and extends into the rotation clearance groove of the lever. The extending block drives the guide arc edge of the one-way rotating plate to move along the inclined guide plate of the positioning baffle, so that the one-way rotating plate slides over the inclined guide plate while rotating. The retracting block drives the top of the abutting straight edge of the one-way rotating plate to abut the rotation clearance groove of the block, and the bottom of the abutting straight edge of the one-way rotating plate to abut the limiting baffle, thereby driving the crane body to move relative to the double-row forward track or the double-row return track.

[0015] The beneficial effects of this utility model are: This utility model provides a circulating container spreader system, comprising: double-row forward travel rails, double-row cranes movable along the double-row forward travel rails, and a crane drive assembly installed on the double-row forward travel rails to drive the double-row cranes to move relative to the double-row forward travel rails; wherein, it further comprises: double-row return travel rails respectively disposed on both sides of the double-row forward travel rails, and a rail transfer vehicle assembly for connecting the end point of the double-row forward travel rails and the start point of the double-row return travel rails, and for connecting the end point of the double-row return travel rails and the start point of the double-row forward travel rails, and the crane drive assembly is also installed on the double-row forward travel rails. The double-row cranes are driven to move relative to the double-row return track; the crane drive assembly drives the double-row cranes from the starting point to the ending point of the double-row return track; the transfer car assembly transfers the double-row cranes at the ending point of the double-row return track to the starting point of the double-row return track; the crane drive assembly drives the double-row cranes from the starting point to the ending point of the double-row return track; the transfer car assembly transfers the double-row cranes at the ending point of the double-row return track to the starting point of the double-row return track, thereby completing the container transport cycle of the double-row cranes. By adopting the above solution, firstly, it overcomes the fact that container spreader systems with a single double track can only transport containers in one direction, resulting in low efficiency and failing to meet the ever-increasing demands of container transport; secondly, compared to the existing circular runway-type transport track with a single double track, the present invention features a symmetrical arrangement on both sides, ensuring consistent load on both sides of the track. This avoids the need for repeated reinforcement of the container lifting system, thereby reducing the structural complexity of the product, lowering its manufacturing cost, and facilitating its widespread adoption. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and all of them fall within the protection scope of this utility model. Figure 1 This is a schematic diagram of the structure of the double-row crane of the circulating container spreader system shown in this utility model, located at the start and end points of the double-row forward travel track; Figure 2 This is a structural schematic diagram of the double-row crane of the circulating container spreader system shown in this utility model moving from the starting point to the end point of the double-row forward track. Figure 3 This is a structural schematic diagram of the double-row crane of the circulating container spreader system shown in this utility model moving from the starting point to the end point of the double-row return track. Figure 4 yes Figure 2The diagram shows the structural schematic of the rail-shifting vehicle component at point A of the circulating container spreader system. Figure 5 yes Figure 2 A schematic diagram of one row of cranes in the double-row cranes of the circulating container spreader system shown at point B; Figure 6 yes Figure 1 A schematic diagram of the crane drive assembly at point C in the circulating container spreader system shown. Figure 7 yes Figure 1 The diagram shows the structure of the circulating container spreader system located in the crane auxiliary positioning component area. Figure 8 yes Figure 7 The diagram shows the structure of the guide slider, lever, and one-way rotating plate of the circulating container spreader system. Detailed Implementation

[0017] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a rotatable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model embodiment provides a circulating container spreader system, which includes: a double-row forward track 10, a double-row crane 20 movable along the double-row forward track 10, and a crane drive assembly 30 installed on the double-row forward track 10 to drive the double-row crane 20 to move relative to the double-row forward track 10. The system also includes: double-row return tracks 40 respectively disposed on both sides of the double-row forward track 10; a track-shifting vehicle assembly 50 respectively used to connect the end point of the double-row forward track 10 and the starting point of the double-row return track 40 and the end point of the double-row return track 40 and the starting point of the double-row forward track 10; and multiple crane auxiliary positioning assemblies 60 respectively installed at both ends of the corresponding double-row forward track 10 and double-row return track 40 to assist in the positioning of the double-row crane 20; the crane drive assembly 30 is also installed on the double-row return track 40 to drive the double-row crane 20 to move relative to the double-row return track 40. The crane drive assembly 30 drives the double-row crane 20 from the starting point of the double-row forward track 10 to the ending point of the double-row forward track 10. After the crane auxiliary positioning assembly 60 positions the double-row crane 20 on the track-shifting vehicle assembly 50, the track-shifting vehicle assembly 50 transfers the double-row crane 20 at the ending point of the double-row forward track 10 to the starting point of the double-row return track 40. The crane drive assembly 50 drives the double-row crane 20 from the starting point of the double-row return track 40 to the ending point of the double-row return track 40. After the crane auxiliary positioning assembly 60 positions the double-row crane 20 on the track-shifting vehicle assembly 50, the track-shifting vehicle assembly 50 transfers the double-row crane 20 at the ending point of the double-row return track 40 to the starting point of the double-row forward track 10, thereby completing the container transport cycle of the double-row crane 20.

[0020] In this utility model, the circulating container spreader system includes only one system as described above, but is not limited to this utility model. The circulating container spreader system may also include multiple interconnected systems as described above. This allows for vehicle movement and return not only at the start and end points of the double-row forward track 10 and the double-row return track 40, but also at the midpoint between the double-row forward track 10 and the double-row return track 40, further improving the efficiency of container transportation by the circulating container spreader system. At the same time, to avoid conflicts between multiple double-row cranes 20, a control system can be added to the circulating container spreader system to control the operating speed and number of the double-row cranes 20, thereby avoiding potential conflicts between the multiple double-row cranes 20.

[0021] In this utility model, by adopting the above-mentioned solution, firstly, it overcomes the fact that the container spreader system with a single double track can only transport containers in one direction, resulting in low efficiency in transporting containers and failing to meet the ever-increasing demands of container transportation; secondly, compared to the existing circular runway-type transport track with a single double track, the two sides of this utility model are symmetrically arranged, so that the load on both sides of the track is consistent, thereby avoiding repeated reinforcement of the container lifting system, reducing the structural complexity of the product, lowering its manufacturing cost, and facilitating its promotion.

[0022] like Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, in order to assemble the rail-shifting vehicle assembly 50, the rail-shifting vehicle assembly 50 includes at least eight rail-shifting vehicles 51 arranged in pairs. Each rail-shifting vehicle 51 connects two rows of rails on the same side of the double-row forward track 10 and the double-row return track 40. The rail-shifting vehicles 51 arranged in pairs can stably move one row of cranes of the double-row crane 20. However, this is not limited to the present invention. The rail-shifting vehicle assembly 50 can also be composed of twelve rail-shifting vehicles 51 arranged in groups of three or sixteen rail-shifting vehicles 51 arranged in groups of four or four, as long as the number of rail-shifting vehicles 51 can stably move one row of cranes of the double-row crane 20. The present invention does not limit this.

[0023] Each of the aforementioned track-shifting vehicles 51 includes: two mounting crossbeams 511, two fixed longitudinal beams 512, at least one track-shifting longitudinal beam 513, two track-shifting mounting beams 514, and track-shifting sections 515 in the same number as the track-shifting longitudinal beams 513. Each row of the double-row cranes 20 includes: a crane body 21, and at least two guide roller assemblies 22 fixed to the top ends of the crane body 21. The guide roller assemblies 22 can move along the double-row forward track 10 or the double-row return track 40. Two mounting beams 511 are arranged parallel to each other at a distance on the top of the two rows of tracks on the same side of the double-row forward track 10 and the double-row return track 40, and are perpendicular to the two rows of tracks on the same side of the double-row forward track 10 and the double-row return track 40. The two rows of tracks on the same side of the double-row forward track 10 and the double-row return track 40 are provided with track shifting notches 11 and 41 at the positions corresponding to the two mounting beams 511. Two fixed longitudinal beams 512 are arranged parallel to each other at a distance from the top of two mounting crossbeams 511 and are perpendicular to the two mounting crossbeams 511. The two fixed longitudinal beams 512 are located on both sides of the two rows of rails on the same side of the double-row forward track 10 and the double-row return track 40. The two moving track mounting beams 514 are respectively installed at both ends on the corresponding fixed longitudinal beams 512 and are located between the two mounting crossbeams 511 and are parallel to the two mounting crossbeams 511. The sliding track segment 515 is fixed at the bottom middle position of the sliding track longitudinal beam 513. The sliding track longitudinal beam 513 is arranged between the two fixed longitudinal beams 512 and is parallel to the two fixed longitudinal beams 512. The two ends of the sliding track longitudinal beam 513 are slidably installed on the corresponding sliding track mounting beams 514. Driving the sliding track longitudinal beam 513 to move the sliding track segment 515 between two adjacent sliding track gaps 11 and 41; After the guide roller assembly 22 moves to the position of the transfer section 515, it drives the transfer longitudinal beam 513 to move, causing the transfer section 515 to move between two adjacent transfer gaps 11 and 41. This allows the guide roller assembly 22 to switch between the two rows of tracks on the same side of the double-row forward track and the double-row return track 40. That is, the transfer section 515 can transfer one row of cranes of the double-row crane 20 from the end point of one row of tracks of the double-row forward track 10 to the beginning point of one row of tracks of the double-row return track 40; the transfer section 515 can also transfer one row of cranes of the double-row crane 20 from the end point of one row of tracks of the double-row return track 40 to the beginning point of one row of tracks of the double-row forward track 10.

[0024] In this utility model, the number of the longitudinal beams 513 is preferably one. Since there are two track shifting gaps 11 and 41, when one track shifting section 515 is moved, one track shifting gap 11 or 41 will appear. At this time, it is necessary to calculate the passage time of the double-row crane 20, otherwise, it will be impossible to pass. Not limited to this utility model, the longitudinal beams 513 can be two or three, so that the track shifting gaps 11 and 41 will not appear during the movement, which makes it convenient to increase the number of double-row cranes 20 and increase the efficiency of transporting containers. This utility model does not limit this.

[0025] To drive the moving longitudinal beam 513, each moving carriage 51 further includes: two first rails 516, a lead screw nut 517, and a first drive motor 518; the two first rails 516 are installed on the top of the corresponding moving mounting beam 514 along the direction of the moving mounting beam 514, and the bottom surface of the moving longitudinal beam 513 is provided with first rail grooves 5131 at both ends, and the two first rails 516 are embedded in the corresponding first rail grooves 5131, so that the moving longitudinal beam 513 can move along the first rails 516; the lead screw nut 517 passes through the moving longitudinal beam 513 and is installed on the moving longitudinal beam 513, and the two ends of the lead screw nut 517 are rotatably installed on the corresponding fixed longitudinal beam 512; the first drive motor 518 is installed on one of the two fixed longitudinal beams 511, and the first drive motor 518 drives the lead screw nut 517 to rotate, thereby moving the moving longitudinal beam 513 between the two fixed longitudinal beams 511.

[0026] For mounting the guide roller assembly 22, the guide roller assembly 22 includes: a guide assembly body 221 and a plurality of first bearings 222; the cross-sections of the double-row forward track 10 and the double-row return track 40 are I-shaped, the top of the guide assembly body 221 is provided with a guide groove 2211, and the plurality of first bearings 222 are installed on the inner wall of the guide groove 2211; the double-row forward track 10 or the double-row return track 40 extends into the guide groove 2211, and the protruding edges on both sides of the bottom of the double-row forward track 10 or the double-row return track 40 are sandwiched between the plurality of first bearings 222, so that the guide assembly body 221 can move relative to the double-row forward track 10 or the double-row return track 40 through the plurality of first bearings 222.

[0027] To limit the wobbling of the guide roller assembly 22, the guide roller assembly 22 includes: a plurality of second bearings 223; the plurality of second bearings 223 respectively pass through the two side walls of the guide groove 2211 and are installed on the two side walls of the guide groove 2211, the sides of the plurality of second bearings 223 abut against the sides of the bottom two protruding edges of the double row forward track 10 or the double row return track 40, and can roll along the sides of the bottom two protruding edges of the double row forward track 10 or the double row return track 40, thereby firmly installing the guide roller assembly 22 on the double row forward track 10 and the double row return track 40, and preventing them from wobbling.

[0028] In order to drive the double-row crane 20 to move relative to the double-row forward track 10 or the double-row return track 40, the crane drive assembly 30 includes: a plurality of drive units 31, each of the drive units 31 including: a mounting base 311, two rotating shafts 312, two friction wheels 313, and a second drive motor 314. The mounting base 311 is respectively mounted on the top of the double-row forward track 10 and the double-row return track 40 and is perpendicular to the double-row forward track 10 and the double-row return track 40. The two rotating shafts 312 are rotatably mounted on the mounting base 311 and are respectively located on both sides of the double-row forward track 10 or the double-row return track 40. Two friction wheels 313 are respectively installed on corresponding rotating shafts 312. The crane body 21 is sandwiched between the two friction wheels 313. The second drive motor 314 is installed on the mounting base 311 and drives the two rotating shafts 312 to rotate. The rotating shafts 312 drive the corresponding friction wheels 313 to move the crane body 21, thereby making the crane body 21 move relative to the double-row forward track 10 or the double-row return track 40.

[0029] In this utility model, the number of drive units 31 is preferably 8, but it is not limited to this utility model. The number of drive units 31 can be 10, 12, or more than 12 in an even number. The drive units 31 can continuously drive the double-row crane 20 to move relative to the double-row forward track 10 or the double-row return track 40. This utility model does not limit this.

[0030] In an alternative embodiment of this utility model, the crane drive assembly 30 includes: a plurality of drive units 31, each drive unit 31 including: a mounting base 311, two rotating shafts 312, a sprocket (not shown), a limiting wheel (not shown), and a second drive motor 314; the mounting base 311 is respectively mounted on the top of the double-row forward track 10 and the double-row return track 40 and is perpendicular to the double-row forward track 10 and the double-row return track 40; the two rotating shafts 312 are rotatably mounted on the mounting base 311 and are respectively located on both sides of the double-row forward track 10 or the double-row return track 40; the sprocket (not shown) is mounted on one of the rotating shafts 312; the limiting wheel (not shown) The crane body 21 is mounted on one of the rotating shafts 312 (not shown). A chain (not shown) is provided on one side of the sprocket (not shown). The crane body 21 is sandwiched between the sprocket (not shown) and the limiting wheel (not shown). The sprocket (not shown) meshes with the chain (not shown). The second drive motor 314 is mounted on the mounting base 311 and drives one of the two rotating shafts 312 to rotate. The rotating shaft 312 drives its corresponding sprocket (not shown) to mesh and drive the crane body 21 to move relative to the limiting wheel (not shown), thereby causing the crane body 21 to move relative to the double-row forward track 10 or the double-row return track 40.

[0031] To install the crane auxiliary positioning component 60, multiple crane auxiliary positioning components 60 are respectively installed at both ends of the corresponding double-row forward track 10 and double-row return track 40. The crane auxiliary positioning component 60 can position the guide roller assembly 22 of one row of the double-row crane 20 on the track transfer section 515 when the double-row crane 20 is transferring the track. Each crane auxiliary positioning component 60 includes: an abutment baffle 61, a telescopic cylinder 62, a lever 63, and a one-way rotating plate 64. The abutting baffle 61 is installed at both ends of the corresponding double-row forward track 10 and double-row return track 40. The telescopic cylinder 62 passes through the abutting baffle 61 and is fixed to the abutting baffle 61. One end of the lever 63 is installed on the telescopic cylinder 62. The one-way rotating plate 64 is rotatably installed on the other end of the lever 63. At both ends of the crane body 21, positioning baffles 211 are provided at positions corresponding to the crane auxiliary positioning component 60. The telescopic cylinder 62 extends to drive the lever 63 to drive the one-way rotating plate 64 to extend toward the positioning baffle 211. One end of the one-way rotating plate 64 slides past the positioning baffle 211 during rotation. The telescopic cylinder 62 retracts to drive the lever 63 to drive the other end of the one-way rotating plate 64 to abut against and pull the positioning baffle 211, so that one end of the crane body 21 abuts against the abutment baffle 61, thereby causing the guide roller assembly 22 to move to the position of the track shifting section 515.

[0032] To ensure the stability of the telescopic movement of the lever 63, each crane auxiliary positioning component 60 further includes a guide slider 65 and a second track 66. The guide slider 65 is fixed to the top of the lever 63, and the second track 66 is installed at both ends of the corresponding double-row forward track 10 and double-row return track 40. The top of the guide slider 65 is provided with a second track groove 651, and the second track 66 is embedded in the second track groove 651, so that the guide slider 65 slides relative to the second track 66 to guide the telescopic cylinder 62 to drive the lever 63 to move.

[0033] In order to enable the unidirectional rotating plate 64 to rotate in one direction, the unidirectional rotating plate 64 includes: a guide arc edge 641 in its extension direction and an abutting straight edge 642 in its retraction direction. The positioning baffle 211 includes: an inclined guide plate 2111 corresponding to the guide arc edge 641 and a limiting baffle 2112 corresponding to the abutting straight edge 642. The lever 63 is fixed to the guide slider 65. The lever 63 is provided with a rotation clearance groove 631. The one-way rotating plate 64 is rotatably installed on the rear part of the lever 63 and extends into the rotation clearance groove 653 of the lever 63. The extending block 63 drives the guide arc edge 641 of the one-way rotating plate 64 to move along the inclined guide plate 2111 of the positioning baffle 211, so that the one-way rotating plate 64 slides over the inclined guide plate 2111 while rotating. The retracting block 63 drives the top of the abutting straight edge 642 of the one-way rotating plate 64 to abut the rotation clearance groove 631 of the block 63, and the bottom of the abutting straight edge 642 of the one-way rotating plate 64 to abut the limiting baffle 2112, thereby driving the crane body 21 to move relative to the double-row forward track 10 or the double-row return track 40.

[0034] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and not for limiting the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, these obvious variations or modifications arising from the essential spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A circulating container spreader system, characterized in that, include: The double-row forward travel track, the double-row crane that can move along the double-row forward travel track, and the crane drive assembly installed on the double-row forward travel track to drive the double-row crane to move relative to the double-row forward travel track; It also includes: double-row return tracks respectively disposed on both sides of the double-row forward track, and a track-shifting vehicle assembly for connecting the end point of the double-row forward track and the start point of the double-row return track, and connecting the end point of the double-row return track and the start point of the double-row forward track. The crane drive assembly is also installed on the double-row return track to drive the double-row crane to move relative to the double-row return track. The crane drive assembly drives the double-row cranes to move from the starting point of the double-row outbound track to the ending point of the double-row outbound track. The track transfer assembly transfers the double-row cranes at the ending point of the double-row outbound track to the starting point of the double-row return track. The crane drive assembly drives the double-row cranes to move from the starting point of the double-row return track to the ending point of the double-row return track. The track transfer assembly transfers the double-row cranes at the ending point of the double-row return track to the starting point of the double-row outbound track.

2. The circulating container spreader system as described in claim 1, characterized in that, The track-shifting vehicle assembly includes: at least eight track-shifting vehicles arranged in pairs, each of the track-shifting vehicles connecting two rows of tracks on the same side of the double-row forward track and the double-row return track; Each of the aforementioned track-shifting vehicles includes: two mounting crossbeams, two fixed longitudinal beams, at least one track-shifting longitudinal beam, two track-shifting mounting beams, and track-shifting sections in the same number as the track-shifting longitudinal beams. Each row of the double-row cranes includes: a crane body, and at least two guide roller assemblies fixed to both ends of the top of the crane body. The guide roller assemblies can move along the double-row forward track or the double-row return track. Two mounting beams are arranged parallel to each other at a distance on the top of the two rows of tracks on the same side of the double-row forward track and the double-row return track, and are perpendicular to the two rows of tracks on the same side of the double-row forward track and the double-row return track. The two rows of tracks on the same side of the double-row forward track and the double-row return track are provided with track shifting notches at the positions between the corresponding two mounting beams. Two fixed longitudinal beams are arranged parallel to each other at a distance from the top of two mounting crossbeams and are perpendicular to the two mounting crossbeams. The two fixed longitudinal beams are located on both sides of the two rows of tracks on the same side of the double-row forward track and the double-row return track. The two moving track mounting beams are respectively installed at both ends on the corresponding fixed longitudinal beams and are located between the two mounting crossbeams and are parallel to the two mounting crossbeams. The sliding track section is fixed at the bottom middle position of the sliding track longitudinal beam. The sliding track longitudinal beam is arranged between the two fixed longitudinal beams and is parallel to the two fixed longitudinal beams. The two ends of the sliding track longitudinal beam are slidably installed on the corresponding sliding track mounting beam. Driving the sliding track longitudinal beam to move the sliding track section between two adjacent sliding track gaps; After the guide roller assembly moves to the position of the track shifting section, it drives the track shifting longitudinal beam to move, causing the track shifting section to move between two adjacent track shifting gaps, thereby enabling the guide roller assembly to switch between the two rows of tracks on the same side of the double-row forward track and the double-row return track.

3. The circulating container spreader system as described in claim 2, characterized in that, Each of the aforementioned track-shifting vehicles further includes: two first tracks, a lead screw and nut, and a first drive motor; Two first tracks are installed on the top of the corresponding moving track mounting beam along the direction of the moving track mounting beam. The bottom surface of the moving track longitudinal beam is provided with first track grooves at both ends. The two first tracks are embedded in the corresponding first track grooves, so that the moving track longitudinal beam can move along the first tracks. The lead screw nut passes through the moving rail longitudinal beam and is installed on the moving rail longitudinal beam. Both ends of the lead screw nut are rotatably installed on the corresponding fixed longitudinal beams. The first drive motor is installed on one of the two fixed longitudinal beams. The first drive motor drives the lead screw nut to rotate, causing the moving rail longitudinal beam to move back and forth between the two fixed longitudinal beams.

4. The circulating container spreader system as described in claim 2, characterized in that, The guide roller assembly includes: a guide assembly body and a plurality of first bearings; The cross-sections of the double-row forward track and the double-row return track are "I" shaped. The top of the guide assembly is provided with a guide groove, and multiple first bearings are installed on the inner wall of the guide groove. The double-row forward track or the double-row return track extends into the guide groove, and the convex edges on both sides of the bottom of the double-row forward track or the double-row return track are sandwiched between multiple first bearings, so that the guide assembly moves relative to the double-row forward track or the double-row return track through multiple first bearings.

5. The circulating container spreader system as described in claim 4, characterized in that, The guide roller assembly includes: a plurality of second bearings; Multiple second bearings pass through the two side walls of the guide groove and are installed on the two side walls of the guide groove. The sides of the multiple second bearings abut against the sides of the bottom two convex edges of the double-row forward track or the double-row return track, and can roll along the sides of the bottom two convex edges of the double-row forward track or the double-row return track.

6. The circulating container spreader system as described in claim 2, characterized in that, The crane drive assembly includes: multiple drive units, each drive unit including: a mounting base, two rotating shafts, two friction wheels, and a second drive motor; The mounting base is respectively installed on the top of the double-row forward track and the double-row return track and is perpendicular to the double-row forward track and the double-row return track. The two rotating shafts are rotatably installed on the mounting base and are respectively located on both sides of the double-row forward track or the double-row return track. The two friction wheels are respectively installed on the corresponding rotating shafts, and the crane body is sandwiched between the two friction wheels. The second drive motor is installed on the mounting base and drives the two rotating shafts to rotate. The rotating shafts drive their corresponding friction wheels to move the crane body.

7. The circulating container spreader system as described in claim 2, characterized in that, The crane drive assembly includes: multiple drive units, each drive unit including: a mounting base, two rotating shafts, a sprocket, a limit wheel, and a second drive motor; The mounting base is respectively installed on the top of the double-row forward track and the double-row return track and is perpendicular to the double-row forward track and the double-row return track. The two rotating shafts are rotatably installed on the mounting base and are respectively located on both sides of the double-row forward track or the double-row return track. The sprocket is mounted on one of the rotating shafts, and the limiting wheel is mounted on the other rotating shaft. The crane body has a chain on the side corresponding to the sprocket. The crane body is sandwiched between the sprocket and the limiting wheel. The sprocket meshes with the chain. The second drive motor is mounted on the mounting base and drives one of the two rotating shafts to rotate. The rotating shaft drives its corresponding sprocket to mesh, causing the crane body to move relative to the limiting wheel.

8. The circulating container spreader system as described in claim 2, characterized in that, The circulating container spreader system also includes: multiple crane auxiliary positioning components, which are respectively installed at both ends of the corresponding double-row forward track and double-row return track. Each crane auxiliary positioning component includes: an abutment baffle, a telescopic cylinder, a lever, and a one-way rotating plate. The abutting baffle is installed at both ends of the corresponding double-row forward track and double-row return track. The telescopic cylinder passes through the abutting baffle and is fixed to the abutting baffle. One end of the lever is installed on the telescopic cylinder. The one-way rotating plate is rotatably installed on the other end of the lever. The crane body has positioning baffles at both ends corresponding to the crane auxiliary positioning components. The telescopic cylinder extends to drive the lever to move the one-way rotating plate toward the positioning baffle. One end of the one-way rotating plate slides past the positioning baffle during rotation. The telescopic cylinder retracts to drive the lever to move the other end of the one-way rotating plate to abut against and pull the positioning baffle, so that one end of the crane body abuts against the abutment baffle, thereby moving the guide roller assembly to the position of the track shifting section.

9. The circulating container spreader system as described in claim 8, characterized in that, Each crane auxiliary positioning component also includes: a guide slider and a second rail; The guide slider is fixed to the top of the lever, and the second track is installed at both ends of the corresponding double-row forward track and double-row return track. The top of the guide slider is provided with a second track groove, and the second track is embedded in the second track groove, so that the guide slider slides relative to the second track to guide the telescopic cylinder to drive the lever to move.

10. The circulating container spreader system as described in claim 9, characterized in that, The unidirectional rotating plate includes: a guide arc edge in its extension direction and an abutting straight edge in its retraction direction; the positioning baffle includes: an inclined guide plate corresponding to the guide arc edge and a limiting baffle corresponding to the abutting straight edge. The lever is fixed to the guide slider, the lever is provided with a rotation clearance groove, and the one-way rotating plate is rotatably installed on the rear part of the lever and extends into the rotation clearance groove of the lever. The extending block drives the guide arc edge of the one-way rotating plate to move along the inclined guide plate of the positioning baffle, so that the one-way rotating plate slides over the inclined guide plate while rotating. The retracting block drives the top of the abutting straight edge of the one-way rotating plate to abut the rotation clearance groove of the block, and the bottom of the abutting straight edge of the one-way rotating plate to abut the limiting baffle, thereby driving the crane body to move relative to the double-row forward track or the double-row return track.

Images