Cantilever lifting device for wharf beam plate installation and application method thereof

Abstract

The invention provides a cantilever lifting device for wharf beam plate installation and an application method thereof, and relates to the technical field of cranes. The technical problems that in the prior art, the construction efficiency is low, and the safety risk is large in the construction process are solved. The cantilever lifting device for wharf beam and slab installation is of a detachable structure and comprises a track ground beam, a trestle, jack supporting legs, supporting legs, a main beam, a longitudinal moving flatcar beam and a lifting crown block, the track ground beam comprises a landside ground beam and a seaside ground beam, and the landside ground beam and the seaside ground beam are installed on a cross beam of a wharf pile foundation in parallel; the hoisting crown block comprises a crown block frame, a winch, a hoisting component and a crown block walking mechanism, the winch is connected with the hoisting component through a winch steel wire rope, and the hoisting component is connected with a plurality of hoisting points of a component needing to be hoisted through a plurality of hoisting steel wire ropes. The construction efficiency and safety of the wharf are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cranes, and in particular to a cantilever lifting device for installing wharf beams and slabs and an application method thereof. Background Art

[0002] During the construction of coastal docks, a large number of prefabricated beams, steel plates and other dock construction components need to be lifted, transferred and installed, which requires a large number of cranes and transport barges, crane ships and other engineering vessels to work together.

[0003] At present, the weight of a general prefabricated beam for dock construction (referred to as: prefabricated beam) is about 45 tons. In the existing technology, the lifting and transfer of prefabricated beams, steel plates and other dock construction components on the sea surface to the crossbeams of the dock pile foundation mainly rely on engineering ships. Engineering ships will be affected by sea water fluctuations, sea wind strength and other sea conditions and climate change factors. Prefabricated beams, steel plates and other dock construction components often swing during the lifting process. In order to reduce the amplitude and frequency of the swing, operations can only be carried out at a slower speed. When encountering tidal or sea conditions and climate conditions, operations need to be suspended and wait for the sea water fluctuations to decrease and the severe weather to disappear before continuing operations.

[0004] The applicant has found that the prior art has at least the following technical problems: In the existing technology, multiple engineering vessels need to cooperate with each other to realize the operations of lifting and transferring prefabricated beams, steel plates and other components for dock construction. The management, coordination and scheduling of different engineering vessels are very difficult, which ultimately makes the overall construction speed very slow and leads to low construction efficiency. At the same time, engineering ships are easily affected by sea conditions and climate factors such as sea water fluctuations and sea breezes. During the construction process, the components being lifted are prone to hit surrounding structures or even operators due to swinging, resulting in greater safety risks during the construction process. Summary of the invention

[0005] The embodiment of the present invention provides a cantilever lifting device for installing a wharf beam and slab and an application method thereof, which solves the technical problems of low construction efficiency and high safety risks during the construction process in the prior art.

[0006] The embodiment of the present invention provides the following technical solutions: The embodiment of the present invention provides a cantilever lifting device for installing a wharf beam and slab. The cantilever lifting device for installing a wharf beam and slab is a detachable structure, which includes a track ground beam, a trestle, a jack leg, a support leg, a main beam, a longitudinally movable flat car beam and a lifting crane, wherein: The track ground beam comprises a land side ground beam and a sea side ground beam, and the land side ground beam and the sea side ground beam are installed in parallel on the cross beam of the wharf pile foundation; The supporting legs include a front supporting leg and a rear supporting leg, the main beam is supported on the sea side ground beam through the front supporting leg, and the main beam is supported on the land side ground beam through the rear supporting leg, and a supporting wheel mechanism is provided between the front supporting leg and the sea side ground beam and between the rear supporting leg and the land side ground beam, and the supporting wheel mechanism can drive the front supporting leg, the rear supporting leg and the main beam to translate linearly along the length direction of the track ground beam; The jack legs include land-side jack legs and sea-side jack legs. The trestle is arranged at the junction of land and sea water. The main beam can be supported on the trestle through the land-side jack legs, and the main beam can be supported on the prefabricated beam installed on the cross beam through the sea-side jack legs. The longitudinally movable flat car beam is arranged on the main beam and the length direction of the longitudinally movable flat car beam is perpendicular to the length direction of the main beam. A transverse moving wheel mechanism is arranged between the longitudinally movable flat car beam and the main beam, and the transverse moving wheel mechanism can drive the longitudinally movable flat car beam to move linearly on the main beam in a direction perpendicular to the length direction of the track beam. The number of the main beams is two, and the two main beams are arranged in parallel with each other, the longitudinally movable flat beams include longitudinally movable long flat beams and longitudinally movable short flat beams, the length of the longitudinally movable long flat beams is greater than the length of the longitudinally movable short flat beams, and the length of the longitudinally movable long flat beams is greater than the gap between the two main beams; The longitudinally movable long flat car beam and the longitudinally movable short flat car beam are each provided with the lifting crane, and the longitudinally movable long flat car beam is each provided with the lifting crane in the section between the two main beams and the section extending out of the main beam in the width direction of the main beam; The crane comprises a crane frame, a hoisting machine, a hoisting component and a crane travel mechanism, wherein the crane frame is arranged on the longitudinally movable flat car beam, the crane travel mechanism is arranged between the crane frame and the longitudinally movable flat car beam and the crane travel mechanism can drive the crane to travel in the length direction of the longitudinally movable flat car beam; The hoisting machine is connected to the hoisting component through a hoisting steel wire rope, and the hoisting component is connected to a plurality of hoisting points of the component to be hoisted through a plurality of hoisting steel wire ropes.

[0007] Optionally, the lifting capacity of the overhead crane arranged on the section where the longitudinally movable long flat car beam is between two of the main beams in the width direction of the main beam is greater than the lifting capacity of the overhead crane arranged on the section where the longitudinally movable long flat car beam extends out of the main beam in the width direction of the main beam; The lifting capacity of the overhead crane arranged on the section of the longitudinally movable long flat car beam between the two main beams in the width direction of the main beam is the same as the lifting capacity of the overhead crane arranged on the longitudinally movable short flat car beam.

[0008] Optionally, the front leg and the rear leg each include a leg transverse beam, a first ladder-type bracket, a second ladder-type bracket, a first diagonal brace and a second diagonal brace, the first ladder-type bracket and the second ladder-type bracket are respectively fixed at the two end edges of the leg transverse beam, the first diagonal brace is hinged between the inner side of the first ladder-type bracket and the top surface of the leg transverse beam, the second diagonal brace is hinged between the inner side of the second ladder-type bracket and the top surface of the leg transverse beam, one main beam is fixed on the first ladder-type bracket, and the other main beam is fixed on the second ladder-type bracket; the support wheel mechanism is arranged between the leg transverse beam and the track ground beam.

[0009] Optionally, the transverse travel wheel mechanism includes a transverse travel motor, a driving gear, a driven gear and a transverse travel wheel, the output shaft of the transverse travel motor is connected to the driving gear, the two driven gears are meshed with the driving gear, each of the driven gears is connected to a transverse travel wheel, and the transverse travel wheel is pressed against the track ground beam and can travel on the track ground beam.

[0010] Optionally, the cantilever lifting device for dock beam and slab installation further comprises a safety protection structure, which comprises a door closing beam, an end stopper, a vehicle stopper, a rail clamp and a windproof cable, wherein: The two door-closing beams are respectively arranged at the two ends of the two main beams, and the two door-closing beams are connected with the two main beams to form a rectangular frame structure to limit the moving distance of the longitudinally movable flat car beam; The end stops are arranged at both ends of each main beam in the length direction to limit the moving distance of the transverse walking wheel mechanism; The vehicle stopper is arranged at the end of the longitudinally movable flat vehicle beam to limit the moving distance of the overhead crane; The rail clamp can sleeve the support wheel mechanism onto the track ground beam to temporarily lock the position of the support leg; The windproof cable can sleeve the support leg onto the track ground beam to temporarily lock the position of the support leg.

[0011] Optionally, the pier includes pile legs, bridge supports, I-beams and bridge deck steel plates that are fixedly connected in sequence from bottom to top, and the height of the top surface of the bridge deck steel plate is consistent with the height of the top surface of a preset pier.

[0012] Optionally, the track ground beam, the main beam and the longitudinally movable flat car beam are all steel structure beams with a triangular cross-section.

[0013] Optionally, the lifting component is a lifting pole, the hoisting wire rope is connected to the lifting pole through a movable pulley, the lifting pole is strip-shaped and is provided with a plurality of through holes along the length direction for passing the lifting wire rope, and the lifting pole can rotate 360° around the movable pulley in the horizontal direction.

[0014] Optionally, the components to be hoisted include prefabricated steel beams, plates and wood for building docks, and sleepers are spaced between the track ground beams and the cross beams.

[0015] The present invention also provides an application method of the cantilever lifting device for installing the wharf beam and slab, comprising the following steps: Step A: installing the pier pile foundation and installing the beam on the pier pile foundation; Step B: installing a cantilever lifting device for installing a wharf beam and slab provided by any technical solution of the present invention on the crossbeam of the wharf pile foundation and the shore; Step C: using the cantilever crane device for installing the wharf beams and slabs to lift and transfer the components used for building the wharf; Step D: After the dock hoisting construction is completed, the cantilever lifting device used for the installation of the dock beams and slabs is removed.

[0016] Any of the above technical solutions provided by the embodiments of the present invention produces at least the following technical effects: The cantilever lifting device for installing the dock beam and slab provided by the present invention is a detachable structure, so that it can be built and installed in the predetermined construction area of ​​the dock during the dock construction process, replacing the cranes and engineering ships such as transport barges and crane ships in the prior art, avoiding the problem of difficult scheduling and management of different engineering ships. The position of the crane can be adjusted in the transverse direction and the longitudinal direction as needed. The lifting and transfer of components by the crane are not only stable but also fast, and the construction efficiency is greatly improved. At the same time, since the track ground beam, trestle, jack legs, support legs, main beam, longitudinal flat car beam and crane used in the present invention all have a stable and reliable installation foundation, they have a stronger adaptability to tides, severe sea conditions and climate, and can operate normally under most climatic conditions. Due to the strong ability to resist interference from sea and climatic conditions, the construction safety is greatly improved, so the technical problems of low construction efficiency and high safety risks during construction in the prior art are solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Through the following drawings, those skilled in the art may better understand the technical effects of the present invention.

[0018] Figure 1 A front schematic diagram of a cantilever lifting device for installing a wharf beam slab provided in an embodiment of the present invention.

[0019] Figure 2 for Figure 1 A schematic top view of a cantilever crane device for installing dock beams and slabs is shown.

[0020] Figure 3 for Figure 1 A left side schematic diagram of the partial structure of a cantilever crane device used for installing dock beams and slabs is shown.

[0021] Figure 4 A schematic diagram of a partial structure of the connection relationship of the main components of a cantilever lifting device for installing a dock beam and slab provided by an embodiment of the present invention.

[0022] Figure 5 A schematic diagram of the connection relationship between a longitudinally movable flat car beam, a lifting crane, a main beam and supporting legs in a cantilever lifting device for installing a wharf beam plate provided in an embodiment of the present invention.

[0023] Figure 6 Another schematic diagram of the connection relationship between the longitudinally movable flat car beam, the lifting crane, the main beam and the supporting legs in a cantilever lifting device for installing a wharf beam plate provided in an embodiment of the present invention.

[0024] Figure 7 A schematic diagram of the connection relationship between the main beam, jack legs and door closing beam in a cantilever lifting device for installing dock beams and slabs provided in an embodiment of the present invention.

[0025] Markings in the figure: 1, track ground beam; 11, land side ground beam; 12, sea side ground beam; 13, wharf pile foundation; 14, cross beam; 2, trestle; 3, jack leg; 31, land side jack leg; 32, sea side jack leg; 4, support leg; 41, front leg; 42, rear leg; 43, support wheel mechanism; 44, leg transverse beam; 451, first ladder type bracket; 452, second ladder type bracket; 461, first diagonal support; 4 62. Second diagonal brace; 5. Main beam; 6. Longitudinal flat car beam; 60. Transverse traveling wheel mechanism; 61. Longitudinal long flat car beam; 62. Longitudinal short flat car beam; 7. Hoisting crane; 71. Crane frame; 72. Winch; 73. Hoisting parts; 74. Crane traveling mechanism; 75. Winch wire rope; 76. Hoisting wire rope; 8. Sleeper; 91. Door closing beam; 92. End stop; 93. Car stop; 94. Track clamp; 95. Windproof cable. DETAILED DESCRIPTION

[0026] The following is combined with the above Figure 1-Figure 7 The preferred implementation modes and various optional implementation schemes provided by the embodiments of the present invention are described in more detail.

[0027] like Figure 1-Figure 7As shown, an embodiment of the present invention provides a cantilever lifting device for installing a wharf beam plate with higher construction safety. The cantilever lifting device for installing a wharf beam plate is a detachable structure, which includes a track ground beam 1, a trestle 2, a jack leg 3, a support leg 4, a main beam 5, a longitudinally movable flat car beam 6 and a lifting crane 7, wherein: The track ground beam 1 includes a land side ground beam 11 and a sea side ground beam 12, which are installed in parallel on a cross beam 14 of a wharf pile foundation 13; The supporting legs 4 include a front supporting leg 41 and a rear supporting leg 42. The main beam 5 is supported on the sea-side ground beam 12 through the front supporting leg 41, and the main beam 5 is supported on the land-side ground beam 11 through the rear supporting leg 42. Support wheel mechanisms 43 are provided between the front supporting leg 41 and the sea-side ground beam 12, and between the rear supporting leg 42 and the land-side ground beam 11. The support wheel mechanism 43 can drive the front supporting leg 41, the rear supporting leg 42 and the main beam 5 to move linearly along the length direction of the track ground beam 1. The jack legs 3 include a land-side jack leg 31 and a sea-side jack leg 32. The pier 2 is arranged at the junction of land and sea water. The main beam 5 can be supported on the pier 2 through the land-side jack leg 31, and the main beam 5 can be supported on the prefabricated beam installed on the cross beam 14 through the sea-side jack leg 32. The longitudinal flat car beam 6 is arranged on the main beam 5 and the length direction of the longitudinal flat car beam 6 is perpendicular to the length direction of the main beam 5. A transverse running wheel mechanism 60 is arranged between the longitudinal flat car beam 6 and the main beam 5. The transverse running wheel mechanism 60 can drive the longitudinal flat car beam 6 to move linearly on the main beam 5 along a direction perpendicular to the length direction of the track ground beam 1; There are two main beams 5, and the two main beams 5 are arranged in parallel with each other. The longitudinally movable flat beam 6 includes a longitudinally movable long flat beam 61 and a longitudinally movable short flat beam 62. The length of the longitudinally movable long flat beam 61 is greater than the length of the longitudinally movable short flat beam 62, and the length of the longitudinally movable long flat beam 61 is greater than the gap between the two main beams 5. The longitudinally movable long flat beam 61 and the longitudinally movable short flat beam 62 are each provided with a crane 7, and the longitudinally movable long flat beam 61 is provided with a crane 7 in a section between two main beams 5 and a section extending out of the main beam 5 in the width direction of the main beam 5; The crane 7 comprises a crane frame 71, a hoist 72, a hoisting component 73 and a crane travel mechanism 74. The crane frame 71 is arranged on the longitudinally moving flat car beam 6. The crane travel mechanism 74 is arranged between the crane frame 71 and the longitudinally moving flat car beam 6. The crane travel mechanism 74 can drive the crane 7 to travel in the length direction of the longitudinally moving flat car beam 6. The hoisting machine 72 is connected to the hoisting component 73 through a hoisting wire rope 75, and the hoisting component 73 is connected to several lifting points of the component to be lifted through several lifting wire ropes 76.

[0028] The cantilever lifting device for installing the dock beam and slab provided by the present invention is a detachable structure, so that it can be built and installed in the predetermined construction area of ​​the dock during the dock construction process, replacing the cranes and engineering ships such as transport barges and crane ships in the prior art, avoiding the problem of difficult scheduling and management of different engineering ships. The position of the lifting trolley 7 can be adjusted in the transverse direction and the longitudinal direction as needed. The lifting and transfer of components by the lifting trolley 7 is not only stable but also fast, and the construction efficiency is greatly improved. At the same time, because the track ground beam 1, pier 2, jack legs 3, support legs 4, main beam 5, longitudinal flat car beam 6 and lifting trolley 7 used in the present invention all have a stable and reliable installation foundation, they have a stronger adaptability to tides, severe sea conditions and climate, can operate normally under most climatic conditions, and greatly improve construction safety.

[0029] As an optional embodiment, in this embodiment, the lifting capacity of the overhead crane 7 arranged in the section where the long flat car beam 61 is longitudinally moved in the width direction of the main beam 5 and is between the two main beams 5 (the lifting capacity of this overhead crane 7 is generally greater than 50 tons, preferably 60 tons) is greater than the lifting capacity of the overhead crane 7 arranged in the section where the long flat car beam 61 is longitudinally moved in the width direction of the main beam 5 and extends out of the main beam 5 (the lifting capacity of this overhead crane 7 is generally greater than 10 tons, preferably 16 tons); The greater the lifting capacity of the overhead crane 7, the greater its deadweight and the greater the load during operation. Therefore, the overhead crane 7 at both ends of the longitudinally movable long flat car beam 61 in this design imposes a relatively small burden on the longitudinally movable long flat car beam 61, which helps to improve the safety and service life of the longitudinally movable long flat car beam 61.

[0030] The lifting capacity of the overhead crane 7 arranged in the section where the long flat car beam 61 is longitudinally displaced in the width direction of the main beam 5 and between the two main beams 5 is the same as the lifting capacity of the overhead crane 7 arranged on the short flat car beam 62 .

[0031] With this design, the overhead crane 7 on the longitudinally moving long flat beam 61 and the overhead crane 7 on the longitudinally moving short flat beam 62 can lift the same component at the same time, thereby lifting a larger load.

[0032] As an optional implementation, in this embodiment, the front leg 41 and the rear leg 42 each include a leg transverse beam 44, a first ladder-type bracket 451, a second ladder-type bracket 452, a first diagonal brace 461 and a second diagonal brace 462. The first ladder-type bracket 451 and the second ladder-type bracket 452 are respectively fixed at the two end edges of the leg transverse beam 44. The first diagonal brace 461 is hinged between the inner side of the first ladder-type bracket 451 and the top surface of the leg transverse beam 44. The second diagonal brace 462 is hinged between the inner side of the second ladder-type bracket 452 and the top surface of the leg transverse beam 44. One main beam 5 is fixed on the first ladder-type bracket 451, and the other main beam 5 is fixed on the second ladder-type bracket 452. A support wheel mechanism 43 is arranged between the leg transverse beam 44 and the track ground beam 1.

[0033] The above structure can stably support and fix the front legs 41 and the rear legs 42. At the same time, the first ladder-type support 451 and the second ladder-type support 452 also facilitate operators to climb and maintain the device.

[0034] As an optional implementation, the transverse travel wheel mechanism 60 in this embodiment includes a transverse travel motor, a driving gear, a driven gear and a transverse travel wheel. The output shaft of the transverse travel motor is connected to the driving gear, and the two driven gears are meshed with the driving gear. Each driven gear is connected to a transverse travel wheel, and the transverse travel wheel is pressed against the track ground beam 1 and can travel on the track ground beam 1.

[0035] On the one hand, the above structure can ensure that the two traveling wheels can move synchronously, thereby achieving steady and reliable traveling, and on the other hand, it can take advantage of the high efficiency of gear meshing transmission, which is conducive to saving the consumption of electric energy.

[0036] As an optional implementation, the cantilever lifting device for dock beam and slab installation in this embodiment further includes a safety protection structure, which includes a door closing beam 91, an end stopper 92, a vehicle stopper 93, a rail clamp 94, and a windproof cable 95, wherein: Two door-closing beams 91 are respectively arranged at the two ends of the two main beams 5, and the two door-closing beams 91 are connected with the two main beams 5 to form a rectangular frame structure to limit the moving distance of the longitudinally movable flat car beam 6; End stops 92 are provided at both ends of each main beam 5 in the length direction to limit the moving distance of the transverse traveling wheel mechanism 60; The vehicle stopper 93 is arranged at the end of the longitudinally movable flat vehicle beam 6 to limit the moving distance of the overhead crane 7; The rail clamp 94 can sleeve the support wheel mechanism 43 onto the track ground beam 1 to temporarily lock the position of the support leg 4; The windproof cable 95 can sleeve the support leg 4 onto the track ground beam 1 to temporarily lock the position of the support leg 4.

[0037] The function of the safety protection structure is to limit the activity space of the movable parts in the present invention to prevent them from exceeding the predetermined activity space and falling, and to temporarily lock the main movable parts when severe weather such as typhoons comes to prevent them from being blown down or shifted by the wind, which more effectively improves the safety of the present invention.

[0038] As an optional implementation, in this embodiment, the trestle 2 includes pile legs, bridge supports, I-beams and bridge deck steel plates that are fixedly connected in sequence from bottom to top, and the height of the top surface of the bridge deck steel plate is consistent with the height of the top surface of the preset wharf. The trestle 2 is a temporary structure. When the wharf construction is completed, the trestle 2 will be dismantled, so the structure assembled by overlapping and assembling the above parts is more convenient for construction and subsequent disassembly.

[0039] As an optional implementation, in this embodiment, the track ground beam 1, the main beam 5 and the longitudinally movable flat car beam 6 are all steel structure beams with triangular cross sections. The triangular steel structure beam has good stability and is convenient for batch manufacturing, assembly and construction.

[0040] As an optional implementation, the hoisting component 73 in this embodiment is a hoisting pole, the hoisting wire rope 75 is connected to the hoisting pole through a movable pulley, the hoisting pole is strip-shaped and has a plurality of through holes for passing the hoisting wire rope 76 along the length direction, and the hoisting pole can rotate 360° around the movable pulley in the horizontal direction. The hoisting pole with the above structure can match components of different angles and lengths, thereby improving the flexibility and applicability of the hoisting operation.

[0041] As an optional implementation, the components that need to be hoisted in this embodiment include prefabricated steel beams, plates and wood for building docks. The prefabricated steel beams, plates and wood for building docks can all be hoisted and transported by the cantilever lifting device for installing dock beams and slabs provided by the present invention. Of course, the cantilever lifting device for installing dock beams and slabs provided by the present invention can also hoist and transport other components for building docks.

[0042] As an optional implementation, in this embodiment, a sleeper 8 is provided between the track beam 1 and the cross beam 14. The sleeper 8 has the functions of shock absorption, buffering and increasing the friction between the track beam 1 and the cross beam 14, thereby facilitating the improvement of the service life of the track beam 1 and the cross beam 14.

[0043] The embodiment of the present invention adopts a cantilever lifting device for dock beam and slab installation to lift prefabricated steel beams and other components, which has outstanding characteristics compared with lifting by a crane ship, especially in terms of safety, economy, environmental protection and progress of construction schedule, and has obvious advantages.

[0044] The present invention also provides an application method of the cantilever lifting device for installing the wharf beam and slab, comprising the following steps: Step A: installing the pier pile foundation and installing the beam on the pier pile foundation; Step B: installing a cantilever lifting device for installing a wharf beam and slab provided by any technical solution of the present invention on the crossbeam of the wharf pile foundation and the shore; Step C: using the cantilever crane device for installing the wharf beams and slabs to lift and transfer the components used for building the wharf; Step D: After the dock hoisting construction is completed, the cantilever lifting device used for the installation of the dock beams and slabs is removed.

[0045] The economic efficiency and safety of the present invention are embodied in the following aspects: (1) The structural design and process of the present invention are exquisite and simple, and the design cost actually only accounts for about 4% of the total price of the device.

[0046] (2) Compared with the crane ship, the present invention has a simple structure and can be domestically produced in terms of the selection of supporting parts.

[0047] (3) Economy of transportation and installation. Due to its relatively small dead weight and low height, the more mature domestic transportation mode is to transport the accessories in bulk and install them on site. Compared with large equipment such as crane ships, this is obviously more economical in terms of component entry and exit and typhoon prevention.

[0048] (4) Due to the simple structure and easy operation system of the device, the economic efficiency of the subsequent maintenance of the device is greatly improved. In addition, it is analyzed from the perspective of the whole process control of the entire project, which greatly shortens the construction period and speeds up the capital turnover rate.

[0049] (5) The device is not affected by waves during operation and can basically operate in all weather conditions. Typhoon prevention measures can also be implemented in a timely manner, with excellent wind resistance and greatly improved safety.

[0050] (6) The lifting is stable, the positioning is accurate and the installation efficiency is high.

[0051] The advantages of the present invention are summarized as follows: (1) The design and manufacturing difficulty is low, the whole machine and its components can be made entirely in China, and the cost is low compared to large-scale lifting devices such as crane ships.

[0052] (2) The mechanical structure is simple, and all domestic parts are used, so the cost of subsequent maintenance is low. In addition, due to the sufficient supply of parts, the maintenance time is short and the maintenance cost is low. The progress of the terminal construction will not be slowed down due to the delay in the supply of parts and spare parts.

[0053] (3) The installation and removal time is short and the parts can be loaded easily.

[0054] (4) It consumes electricity to operate and has no emissions, making it more environmentally friendly than lifting equipment such as crane ships.

[0055] (5) The larger the design width of the wharf, the greater the advantage, which solves the defect of insufficient lifting distance of the crane ship.

[0056] The successful trial and practice of the embodiments of the present invention in dock construction fully proves that the present invention has good economy, safety and reliability.

[0057] The present invention can also be applied to the construction of roads and shallow sea areas, and is not limited to docks. The application of the present invention to the construction of roads and shallow sea areas is also covered within the protection scope of the present invention. The above technical solutions are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A cantilever lifting device for installing a wharf beam and slab, characterized in that: The cantilever lifting device for installing the wharf beam plate is a detachable structure, which includes a track ground beam, a trestle, a jack leg, a support leg, a main beam, a longitudinally movable flat car beam and a lifting crane, wherein: The track ground beam comprises a land side ground beam and a sea side ground beam, and the land side ground beam and the sea side ground beam are installed in parallel on the cross beam of the wharf pile foundation; The supporting legs include a front supporting leg and a rear supporting leg, the main beam is supported on the sea side ground beam through the front supporting leg, and the main beam is supported on the land side ground beam through the rear supporting leg, and a supporting wheel mechanism is provided between the front supporting leg and the sea side ground beam and between the rear supporting leg and the land side ground beam, and the supporting wheel mechanism can drive the front supporting leg, the rear supporting leg and the main beam to translate linearly along the length direction of the track ground beam; The jack legs include land-side jack legs and sea-side jack legs. The trestle is arranged at the junction of land and sea water. The main beam can be supported on the trestle through the land-side jack legs, and the main beam can be supported on the prefabricated beam installed on the cross beam through the sea-side jack legs. The longitudinally movable flat car beam is arranged on the main beam and the length direction of the longitudinally movable flat car beam is perpendicular to the length direction of the main beam. A transverse moving wheel mechanism is arranged between the longitudinally movable flat car beam and the main beam, and the transverse moving wheel mechanism can drive the longitudinally movable flat car beam to move linearly on the main beam in a direction perpendicular to the length direction of the track beam. The number of the main beams is two, and the two main beams are arranged in parallel with each other, the longitudinally movable flat beams include longitudinally movable long flat beams and longitudinally movable short flat beams, the length of the longitudinally movable long flat beams is greater than the length of the longitudinally movable short flat beams, and the length of the longitudinally movable long flat beams is greater than the gap between the two main beams; The longitudinally movable long flat car beam and the longitudinally movable short flat car beam are each provided with the lifting crane, and the longitudinally movable long flat car beam is each provided with the lifting crane in the section between the two main beams and the section extending out of the main beam in the width direction of the main beam; The crane comprises a crane frame, a hoisting machine, a hoisting component and a crane travel mechanism, wherein the crane frame is arranged on the longitudinally movable flat car beam, the crane travel mechanism is arranged between the crane frame and the longitudinally movable flat car beam and the crane travel mechanism can drive the crane to travel in the length direction of the longitudinally movable flat car beam; The hoisting machine is connected to the hoisting component through a hoisting steel wire rope, and the hoisting component is connected to a plurality of hoisting points of the component to be hoisted through a plurality of hoisting steel wire ropes.

2. The cantilever lifting device for installing the wharf beam and slab according to claim 1, characterized in that: The lifting capacity of the overhead crane arranged on the section where the longitudinally movable long flat car beam is between two of the main beams in the width direction of the main beam is greater than the lifting capacity of the overhead crane arranged on the section where the longitudinally movable long flat car beam extends out of the main beam in the width direction of the main beam; The lifting capacity of the overhead crane arranged on the section of the longitudinally movable long flat car beam between the two main beams in the width direction of the main beam is the same as the lifting capacity of the overhead crane arranged on the longitudinally movable short flat car beam.

3. The cantilever lifting device for installing the wharf beam and slab according to claim 2 is characterized in that: The front support leg and the rear support leg each include a support leg transverse beam, a first ladder-type bracket, a second ladder-type bracket, a first diagonal brace and a second diagonal brace. The first ladder-type bracket and the second ladder-type bracket are respectively fixed at the two end edges of the support leg transverse beam. The first diagonal brace is hinged between the inner side of the first ladder-type bracket and the top surface of the support leg transverse beam. The second diagonal brace is hinged between the inner side of the second ladder-type bracket and the top surface of the support leg transverse beam. One of the main beams is fixed on the first ladder-type bracket, and the other main beam is fixed on the second ladder-type bracket. The support wheel mechanism is arranged between the support leg transverse beam and the track ground beam.

4. The cantilever lifting device for installing the wharf beam and slab according to claim 3 is characterized in that: The transverse travel wheel mechanism includes a transverse travel motor, a driving gear, a driven gear and a transverse travel wheel. The output shaft of the transverse travel motor is connected to the driving gear, and the two driven gears are meshed with the driving gear. Each driven gear is connected to a transverse travel wheel. The transverse travel wheel is pressed against the track ground beam and can travel on the track ground beam.

5. The cantilever lifting device for installing the wharf beam and slab according to claim 4, characterized in that: The cantilever lifting device for installing the wharf beam plate also includes a safety protection structure, which includes a door closing beam, an end stopper, a vehicle stopper, a rail clamp and a windproof cable, wherein: The two door-closing beams are respectively arranged at the two ends of the two main beams, and the two door-closing beams are connected with the two main beams to form a rectangular frame structure to limit the moving distance of the longitudinally movable flat car beam; The end stops are arranged at both ends of each main beam in the length direction to limit the moving distance of the transverse walking wheel mechanism; The vehicle stopper is arranged at the end of the longitudinally movable flat vehicle beam to limit the moving distance of the overhead crane; The rail clamp can sleeve the support wheel mechanism onto the track ground beam to temporarily lock the position of the support leg; The windproof cable can sleeve the support leg onto the track ground beam to temporarily lock the position of the support leg.

6. The cantilever lifting device for installing the wharf beam and slab according to claim 5, characterized in that: The trestle comprises pile legs, bridge supports, I-beams and bridge deck steel plates which are fixedly connected in sequence from bottom to top, and the height of the top surface of the bridge deck steel plate is consistent with the height of the top surface of the preset wharf.

7. The cantilever lifting device for installing the wharf beam and slab according to claim 6, characterized in that: The track ground beam, the main beam and the longitudinally movable flat car beam are all steel structure beams with triangular cross sections.

8. The cantilever lifting device for installing the wharf beam and slab according to claim 7, characterized in that: The lifting component is a lifting pole, the hoisting wire rope is connected to the lifting pole through a movable pulley, the lifting pole is strip-shaped and is provided with a plurality of through holes for passing the lifting wire rope along the length direction, and the lifting pole can rotate 360° around the movable pulley in the horizontal direction.

9. The cantilever lifting device for installing the wharf beam and slab according to claim 8, characterized in that: The components to be hoisted include prefabricated steel beams, plates and wood materials used for building docks, and sleepers are arranged between the track ground beams and the cross beams.

10. An application method of the cantilever lifting device for installing a wharf beam and slab according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step A: installing the pier pile foundation and installing the beam on the pier pile foundation; Step B: installing the cantilever lifting device for installing the wharf beam and slab according to any one of claims 1 to 9 on the crossbeam of the wharf pile foundation and the shore; Step C: using the cantilever crane device for installing the wharf beams and slabs to lift and transfer the components used for building the wharf; Step D: After the dock hoisting construction is completed, the cantilever lifting device used for the dock beam and slab installation is removed.

Images