A bracket trolley winding system for a single-box girder quay crane

Abstract

The present invention discloses a trolley winding system for a single-box girder quay crane, comprising a trolley assembly disposed on the upper surface of the girder structure, a trolley, a tensioning device, a pulley block, a tensioning traction wire rope, a first wire rope, and a second wire rope. The trolley assembly is provided with two sets, one on the sea side and one on the land side of the trolley assembly; the pulley block is provided with two sets, one on the sea side and one on the land side of the trolley assembly, and is located outside the trolley assembly. The tensioning traction wire rope is wound around the two pulley blocks, with its ends connected to the two sets of trolleys respectively. The first wire rope connects the land-side trolley to the trolley assembly; the second wire rope connects the sea-side trolley to the trolley assembly; the tensioning device is located outside the land-side pulley block and forms a tensioning fit with the tensioning traction wire rope. The present invention controls the sway of the main hoisting wire rope at the source, solving the problem of wire rope bouncing.

Description

Technical Field

[0001] The present invention relates to a quay crane winding system, and more particularly to a bracket trolley winding system for a single-box beam quay crane. Background Art

[0002] The development of larger single-frame quayside cranes requires longer girder outreaches, longer main hoist wire rope spans, longer overhangs, and greater deflection, making rope bouncing a common problem during operation. While seemingly a minor issue, rope bouncing directly impacts the stability and efficiency of the quayside crane's trolleys and cranes, exacerbating vibrations and affecting overall performance, sometimes even directly impacting the crane's proper functioning. Furthermore, the large span of the rope requires significantly more tension to overcome deflection under its own weight. This significant increase in tension not only increases the cost of the tensioning device but also reduces the life of the rope.

[0003] For large quay cranes with long front and rear outreaches, the problems of the main hoisting wire rope swinging and bouncing need to be solved by arranging a bracket trolley on the sea and land sides of the quay crane to support the main hoisting wire rope.

[0004] For single-box girder quay cranes, one conventional design approach is to place all the wire ropes of the trolley winding system under the lower surface of the structural girder. However, placing the wire ropes under the girder will cause the following problems:

[0005] First, the wire rope changes a lot after the beam is raised, and the cylinder stroke required to adjust the wire rope tension is large, which increases production costs;

[0006] Second, the winding system has complex design and high production requirements for the related mechanisms at the bottom of the beam;

[0007] Third, installation and subsequent maintenance are inconvenient, and a ladder platform needs to be configured to maintain the lower structure of the beam, which has high production and maintenance costs.

[0008] Another method involves placing the tensioning device on the upper surface of the structural beam, with the remaining winding system components located below the lower surface. A diverting pulley is installed on the lower surface of the structure to wind the wire rope from the upper surface to the lower surface of the beam. While this winding method improves the maintenance of the tensioning device, it complicates the winding of the wire rope and requires excessively long wire rope. Summary of the Invention

[0009] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide a bracket trolley winding system for a single-box beam quay crane, which controls the suspension amount of the main lifting wire rope from the source and solves the problem of the wire rope being prone to bouncing.

[0010] To achieve the above object, the present invention adopts the following technical solutions:

[0011] A single-box girder quay crane bracket trolley winding system includes a trolley assembly provided on the upper surface of the girder structure, a bracket trolley, a tensioning device, a pulley block, a tensioning traction wire rope, a first wire rope, and a second wire rope;

[0012] There are two sets of the bracket trolleys, which are respectively arranged on the sea side and the land side of the trolley assembly;

[0013] The pulley block is provided with two sets, which are respectively provided on the sea side and the land side of the trolley assembly and are located outside the bracket trolley;

[0014] The tensioning traction wire rope is wound around the two sets of pulley blocks, and the two ends are respectively connected to the two sets of bracket trolleys;

[0015] The first steel wire rope connects the land-side bracket trolley and the trolley assembly;

[0016] The second steel wire rope connects the sea-side bracket trolley and the trolley assembly;

[0017] The tensioning device is arranged on the outside of the pulley group on the land side and forms a tensioning fit with the tensioning traction wire rope.

[0018] Preferably, the trolley assembly is provided with sea-side securing points and land-side securing points;

[0019] The upper surface of the beam structure is also provided with steel wire rope fastening points;

[0020] The bracket trolleys are all provided with fastening points and pulley assemblies;

[0021] One end of the tensioning traction wire rope is connected to a fastening point on the land side bracket trolley, and the other end is connected to a fastening point on the sea side bracket trolley;

[0022] The first steel wire rope is wound around a pulley assembly on the land side of the bracket trolley, one end of the first steel wire rope is connected to the land side fastening point on the trolley assembly, and the other end is connected to the steel wire rope fastening point;

[0023] The second steel wire rope is wound around the pulley assembly on the sea side of the bracket trolley, one end of which is connected to the sea side fastening point on the trolley assembly, and the other end is connected to the steel wire rope fastening point.

[0024] Preferably, each pulley assembly includes a pair of pulleys;

[0025] The tensioning device is provided with two sets;

[0026] The trolley assembly is provided with two sea-side securing points and two land-side securing points;

[0027] The bracket trolley is provided with two fastening points and two pulley assemblies;

[0028] There are two steel wire rope fastening points;

[0029] There are two of each of the tensioning and traction steel wire rope, the first steel wire rope, and the second steel wire rope.

[0030] Preferably, the carriage trolley comprises a carriage trolley frame;

[0031] The bracket trolley frame is set as an inverted structure, and wheels are provided on its upper bottom edge, and the wheels move along the track on the upper surface of the beam structure; the lower bottom edge is located below the beam structure and is provided with a trolley power supply system and a trolley power supply system traction bracket;

[0032] The fastening points and the pulley assembly are both arranged on the upper bottom edge of the bracket trolley frame.

[0033] Preferably, the upper bottom edge of the bracket trolley frame is also provided with a wire rope roller assembly and a lifting wire rope roller device;

[0034] The lifting wire rope roller device is arranged on the outside of the pulley assembly;

[0035] The wire rope roller assembly is arranged between the fastening point and the pulley assembly.

[0036] Preferably, the bracket trolley frame is further provided with an anti-roller device and a horizontal wheel device;

[0037] The anti-roller device is located at the lower part of the lower surface of the track-supporting beam of the track on the upper surface of the beam structure and cooperates with the lower surface of the track-supporting beam.

[0038] Preferably, the two steel wire rope fastening points are both provided on the upper surface of the beam structure through brackets;

[0039] A hinge roller device is also provided on one side of the bracket.

[0040] Preferably, the bracket is an L-shaped bracket or a T-shaped bracket.

[0041] Preferably, the two brackets are symmetrically arranged along the center line of the upper surface of the beam structure.

[0042] Preferably, a plurality of roller groups are further provided on the upper surface of the beam structure.

[0043] The single-box girder quay crane bracket trolley winding system provided by the present invention also has the following beneficial effects:

[0044] 1) The steel wire ropes of the trolley winding system for the single-box girder quay crane of the present invention are all arranged on the upper surface of the girder structure, and the trolley assembly power supply system is placed on the lower surface of the girder structure, which can avoid interference between the winding system and the power supply system due to limited design space;

[0045] 2) The frame of the bracket trolley is designed to be upside down to reduce the occupied space.

[0046] 3) Each mechanism is located on the upper surface of the beam, which is convenient for installation and maintenance, and does not require a ladder platform for maintenance;

[0047] 4) The bracket trolley structure is lightweight and fully utilizes the profile to form a frame structure;

[0048] 5) Arrange a bracket (L-shaped or T-shaped) at the hinge point of the front beam, and place the hinge roller device and the sea-side wire rope fastening point on the bracket, effectively reducing the change in the winding wire rope after the beam is raised, thereby shortening the tensioning cylinder stroke;

[0049] 6) In order to prevent the wire rope from sagging and rubbing against the surface of the structure, a group of small rollers with appropriate spacing are arranged on the surface of the beam to support the sagging wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a schematic diagram of the framework structure of the bracket trolley winding system for the single-box girder quay crane of the present invention;

[0051] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle bracket trolley, (a) is the main view, (b) is the side view;

[0052] Figure 3 yes Figure 1 Schematic diagram of the structure of the middle wire rope fastening point, (a) is the main view, (b) is the AA direction diagram in (a);

[0053] Figure 4 This is a schematic diagram of the roller group in the winding system of the bracket trolley for the single-box beam quay crane of the present invention, (a) is the main view, and (b) is the AA direction schematic diagram in (a). DETAILED DESCRIPTION

[0054] In order to better understand the above technical solutions of the present invention, the technical solutions of the present invention are further described below with reference to the accompanying drawings and embodiments.

[0055] Combine Figures 1 to 4As shown, the present invention provides a single-box beam quay crane bracket trolley winding system, including a trolley assembly 8 arranged on the upper surface of the beam structure 100, two sets of bracket trolleys (land side bracket trolley 4 and sea side bracket trolley 14), a tensioning device 1, two sets of pulley blocks, a tensioning traction wire rope 2, a first wire rope 6 and a second wire rope 12.

[0056] The land-side bracket trolley 4 is located on the land side of the trolley assembly 8 , and the sea-side bracket trolley 14 is located on the sea side of the trolley assembly 8 .

[0057] One set of pulleys is located on the land side of the trolley assembly 8 and outside the land side bracket trolley 4 , and the other set of pulleys 16 is located on the return side of the trolley assembly 8 and outside the sea side bracket trolley 14 .

[0058] Each pulley assembly includes a pair of pulleys symmetrically arranged relative to the center line of the beam structure 100.

[0059] There are two sets of tensioning devices 1, which are tensioned by oil cylinders and correspond to a set of pulley blocks on the land side.

[0060] On the trolley assembly 8, two trolley land side fastening points 7 are symmetrically arranged along the center line of the beam structure 100 are arranged on the side of the land side bracket trolley 4, and two trolley sea side fastening points 9 are symmetrically arranged along the center line of the beam structure 100 are arranged on the side of the sea side bracket trolley 14.

[0061] Two pulley assemblies 5 symmetrically arranged relative to the center line of the beam structure 100 are set on the side of the landside bracket trolley 4 towards the trolley assembly 8, and two fastening points 3 symmetrically arranged relative to the center line of the beam structure 100 are set towards the side of the pulley assembly.

[0062] On the sea side bracket trolley 14, two pulley assemblies 13 are arranged symmetrically with respect to the center line of the beam structure 100 on the side facing the trolley assembly 8, and two fastening points 15 are arranged symmetrically with respect to the center line of the beam structure 100 on the side facing the pulley group 16.

[0063] Two pairs of brackets 17 are installed between the trolley assembly 8 and the sea-side support trolley 14. Each pair of brackets 17 is symmetrically arranged along the centerline of the upper surface of the beam structure 100. Wire rope tie-down points 10 and 11 are located on one side of the brackets 17, and hinge roller assemblies 18 are located on the other side. The hinge roller assemblies prevent the wire rope wrapped around the trolley from interfering with the steel structure or other components on the steel structure as it rises with the front beam. The rising wire rope first contacts the rollers, maintaining a certain distance from the steel structure or other components on the steel structure to prevent contact or even interference.

[0064] The bracket 17 is set as an L-shaped bracket or a T-shaped bracket. Considering that placing the hinge roller device 18 on the upper beam on the sea side will cause a large change in the wire rope after the beam is lifted up, the hinge roller device 18 is arranged on the bracket 17 at the hinge point, which can effectively reduce the change in the wire rope.

[0065] Two tensioning wire ropes 2 are provided, with the same winding arrangement. One end of the tensioning wire rope 2 is fixed to the lashing point 3, and after being wound around the pulley block 16 on the land side and the sea side in sequence, the other end is fixed to the lashing point 15.

[0066] Two first steel ropes 6 are provided, and the winding method is set in the same way. One end of the first steel rope 6 is fixed to the land side fastening point 7 of the trolley, and after being wound around the pulley assembly 5, the other end is fixed to the steel rope fastening point 10.

[0067] Two second steel ropes 12 are provided, and the winding method is the same. One end of the second steel rope 12 is fixed to the sea side fastening point 9 of the trolley, and after being wound around the pulley assembly 13, the other end is fixed on the steel rope fastening point 11.

[0068] The land-side trolley 4 and the sea-side trolley 14 both include a trolley frame 19 .

[0069] The bracket trolley frame 19 is configured as an inverted structure, and two wheels 20 are symmetrically arranged relative to the center line of the beam structure 100 on its upper bottom edge, and the wheels 20 move along the track 101 on the upper surface of the beam structure 100; the lower bottom edge is located below the beam structure 100, and is provided with a trolley power supply system 21 and a trolley power supply system traction bracket 22.

[0070] The securing points 3, 15 and the pulley assemblies 5, 13 are all mounted on the upper bottom edge of the carriage trolley frame 19.

[0071] Wire rope idler assemblies 23 and lifting wire rope idler assemblies 24 are also mounted on the upper bottom edge of the trolley frame 19. Wire rope idler assemblies 23 support the wire rope wound from the head to the tail of the trolley to prevent it from rubbing against the trolley structure. Lifting wire rope idler assemblies 24 support the lifting wire rope to prevent it from sagging.

[0072] The hoisting wire rope roller device 24 is located outside the pulley assembly 5,13.

[0073] The wire rope idler assembly 23 is located between the securing points 3 , 15 and the pulley assembly 5 , 13 .

[0074] Also be installed with counter-roller device 25 and horizontal wheel device 26 on the carriage trolley frame 19. Counter-roller device 25 effects are to limit the scope of jumping on the carriage trolley. The effect of horizontal wheel device 26 is to prevent the carriage trolley from going astray, avoids wheel rim from gnawing rail because of going astray.

[0075] The counter-roller device 25 cooperates with the track 101 on the upper surface of the beam structure 100 .

[0076] In order to prevent the single-box beam quay crane of the present invention from using a bracket trolley winding system to tension itself and the traction wire rope to naturally droop excessively and rub against the upper surface of the structural beam 100, a plurality of roller groups 27 are also installed on the upper surface of the beam structure 100 to support the hanging wire ropes (mainly the wire ropes of the bracket trolley winding system itself, i.e., the tensioning traction wire rope, the first wire rope, and the second wire rope). The spacing between the roller groups 27 is reasonably arranged according to the length of the wire rope, and the left and right sides are symmetrically arranged relative to the center line of the beam structure 100.

[0077] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A single-box girder quay crane bracket trolley winding system, characterized by: It includes a trolley assembly, a bracket trolley, a tensioning device, a pulley block, a tensioning traction wire rope, a first wire rope and a second wire rope arranged on the upper surface of the beam structure; There are two sets of the bracket trolleys, which are respectively arranged on the sea side and the land side of the trolley assembly; The pulley block is provided with two sets, which are respectively provided on the sea side and the land side of the trolley assembly and are located outside the bracket trolley; The tensioning traction wire rope is wound around the two sets of pulley blocks, and the two ends are respectively connected to the two sets of bracket trolleys; The first steel wire rope connects the bracket trolley and the trolley assembly on the land side; The second steel wire rope connects the sea-side bracket trolley and the trolley assembly; The tensioning device is arranged on the outside of the pulley block on the land side and forms a tensioning fit with the tensioning traction wire rope. The trolley assembly is provided with sea-side securing points and land-side securing points; The upper surface of the beam structure is also provided with a steel wire rope fastening point; the upper surface of the beam structure is also provided with a plurality of roller groups; The bracket trolleys are all provided with fastening points and pulley assemblies; One end of the tensioning traction wire rope is connected to a fastening point on the land side bracket trolley, and the other end is connected to a fastening point on the sea side bracket trolley; The first steel wire rope is wound around a pulley assembly on the land side of the bracket trolley, one end of the first steel wire rope is connected to the land side fastening point on the trolley assembly, and the other end is connected to the steel wire rope fastening point; The second steel wire rope is wound around the pulley assembly on the sea side of the bracket trolley, one end of which is connected to the sea side fastening point on the trolley assembly, and the other end is connected to the steel wire rope fastening point. Each of the pulley assemblies comprises a pair of pulleys; The tensioning device is provided with two sets; The trolley assembly is provided with two sea-side securing points and two land-side securing points; The bracket trolley is provided with two fastening points and two pulley assemblies; There are two steel wire rope fastening points; There are two tensioning traction wire ropes, two first wire ropes, and two second wire ropes. The two steel wire rope fastening points are both provided on the upper surface of the beam structure through brackets; A hinge roller device is also provided on one side of the bracket. The bracket is an L-shaped bracket or a T-shaped bracket.

2. The single-box girder quay crane bracket trolley winding system according to claim 1 is characterized in that: The carriage trolley includes a carriage trolley frame; The bracket trolley frame is set as an inverted structure, and wheels are provided on its upper bottom edge, and the wheels move along the track on the upper surface of the beam structure; the lower bottom edge is located below the beam structure and is provided with a trolley power supply system and a trolley power supply system traction bracket; The fastening points and the pulley assembly are both arranged on the upper bottom edge of the bracket trolley frame.

3. The single-box girder quay crane bracket trolley winding system according to claim 2 is characterized in that: The upper bottom edge of the bracket trolley frame is also provided with a wire rope roller assembly and a lifting wire rope roller device; The lifting wire rope roller device is arranged on the outside of the pulley assembly; The wire rope roller assembly is arranged between the fastening point and the pulley assembly.

4. The single-box girder quay crane bracket trolley winding system according to claim 3 is characterized in that: The bracket trolley frame is also provided with a reverse roller device and a horizontal wheel device; The anti-roller device is located at the lower part of the lower surface of the track-supporting beam of the track on the upper surface of the beam structure and cooperates with the lower surface of the track-supporting beam.

5. The single-box girder quay crane bracket trolley winding system according to claim 1 is characterized in that: The two brackets are symmetrically arranged along the center line of the upper surface of the beam structure.

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