Heavy pontoon bridge with power and steering capability

Abstract

The heavy pontoon bridge comprises an in-river ark, an in-river sharp boat and a power system, the in-river ark and the in-river sharp boat are rotationally connected through a lug plate, a power cabin is arranged on the in-river sharp boat, the power system is arranged in the power cabin, and the power system is connected with the in-river sharp boat. The power system is rotationally arranged in the power cabin through a rotating pin shaft assembly and is positioned in the power cabin through a limiting pin shaft assembly, and a steering handle in the power system adjusts the rotating direction of the swing mechanism so as to adjust the course of the pontoon bridge. The power system is arranged in the power cabin, water maneuvering of the pontoon bridge can be achieved by unfolding and starting the power system, compared with a motorboat-assisted pontoon bridge, the flexibility is higher, meanwhile, the power system is rotationally arranged in the power cabin, the power system can be conveniently and completely stored in the sharp boat in the river in the transportation process, the overall size of the pontoon bridge during storage is reduced, and transportation is convenient.

Description

Technical Field

[0001] The invention relates to an emergency rescue pontoon bridge in the field of river crossing equipment, in particular to a heavy pontoon bridge equipped with power and having steering capability. Background Art

[0002] Emergency rescue pontoon bridges are river crossing equipment composed of multiple unit boats. They are mainly used to overcome river obstacles and are widely used in disaster relief and military fields. After years of development, my country's emergency rescue pontoon bridge equipment has developed a variety of models of pontoon bridge equipment to meet the needs of emergency rescue, disaster relief, combat and training in different periods. However, most of the existing pontoon bridge equipment does not have power, so the pontoon bridge equipment needs external motorboats to provide power for auxiliary navigation when maneuvering in the water; secondly, when using motorboats to provide external power, the overall speed is not high and the maneuverability is poor when performing pushing, towing and side-by-side operations, especially under high flow conditions. There are limitations on use. The additional motorboats increase the types and number of equipment units, and also increase the number of operators.

[0003] A small number of pontoon bridge equipment can achieve hull power integration, but the carrying capacity is relatively low, and this part of the pontoon bridge equipment equipped with an additional power system increases the overall volume, which is inconvenient to transport when the pontoon bridge is folded. In response to the above problems, this application proposes a solution. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a heavy-duty pontoon bridge equipped with power and having steering capability, which can provide additional power for the pontoon bridge, enable the pontoon bridge to sail on the water surface, and at the same time be able to control the sailing direction.

[0005] Technical solution: The present invention describes a heavy-duty pontoon bridge equipped with power and capable of steering, comprising an ark in the river, a river raft and a power system, wherein the ark in the river is rotatably connected to the river raft via ear plates, the river raft is provided with a power cabin, a power system is provided in the power cabin, the power system is rotatably provided in the power cabin via a rotating pin assembly, and is positioned in the power cabin via a limit pin assembly, and the steering handle in the power system adjusts the rotation direction of the slewing mechanism to adjust the heading of the pontoon bridge.

[0006] When the river boat is folded with the river ark through the ear plates and placed on the transport vehicle, the power system rotates in the power compartment, and the power system is completely stored in the power compartment, ensuring that the steering handle and outboard motor in the power system do not protrude out of the river boat abruptly, making it inconvenient to transport the pontoon bridge.

[0007] Preferably, the power system includes an outboard motor, a slewing mechanism, a battery pack, a fuel tank group and a steering handle. The slewing mechanism is rotatably connected to the inner wall of the power compartment through a rotating pin assembly. The battery pack and the fuel tank group are detachably arranged on the end face of the slewing mechanism and rotate with the slewing mechanism. The outboard motor is connected to the slewing mechanism through a hanging frame and rotates with the slewing mechanism. The steering handle is fixedly connected to the slewing mechanism to drive the upper rotating plate in the slewing mechanism to rotate on the horizontal plane.

[0008] Preferably, the slewing mechanism includes an outer shell, a slewing bearing one, a slewing bearing two, an upper rotating plate and a lower rotating plate. The slewing bearing one and the slewing bearing two are two concentric rings. The inner ring of the slewing bearing one is rotatably connected to the outer ring of the slewing bearing two. A gap is left between the outer ring of the slewing bearing one and the outer shell and the slewing bearing one is fixedly connected to the outer shell. The upper rotating plate is detachably arranged on the top of the slewing bearing two and rotates with the slewing bearing two. The lower rotating plate is fixedly arranged on the bottom of the slewing bearing one.

[0009] The second slewing bearing rotates relative to the first slewing bearing, so that the steering handle can drive the upper rotating plate fixedly connected to the second slewing bearing to rotate. By rotating the steering handle, the direction of the outboard motor connected to the upper rotating plate is adjusted, and finally the sailing direction is adjusted.

[0010] A gear structure is arranged on the circumference of the upper rotating plate, and two pull pins are inserted and pulled out in the gear structure to limit the rotation of the upper rotating plate. The pull pins are inserted and pulled out between the gap between the rotating support 1 and the outer shell on both sides of the connection between the rotating mechanism and the rotating pin shaft assembly, and a protrusion is arranged on the pull pin, and the protrusion meshes with the gear structure on the upper rotating plate when the pull pin is inserted into the gap.

[0011] When the upper rotating plate rotates to drive the outboard motor to rotate to a certain angle, in the hope of maintaining the sailing direction of the pontoon bridge at this time, the operator inserts pull pins into the gaps between the slewing support 1 and the outer shell on both sides of the connection between the slewing mechanism and the rotating pin shaft assembly. At this time, the pull pin extends into the gap, the pin rod of the pull pin contacts one side of the rotating pin shaft assembly, and the protrusion on the pull pin engages with the gear structure on the upper rotating plate. At this time, the pin rod of the pull pin is limited by the rotating pin shaft assembly. No matter which side the upper rotating plate rotates to, it will be limited by a pull pin and the rotating pin shaft assembly. That is, after inserting two pull pins, the heading of the pontoon bridge is fixed.

[0012] Preferably, a plurality of bolt holes are evenly distributed on the top end surface of the second slewing bearing, and the upper rotating plate is inserted into the bolt holes through bolts passing through the upper rotating plate, and is fixedly connected to the second slewing bearing; a plurality of bolt holes are evenly distributed on the bottom end surface of the first slewing bearing, and the lower rotating plate is inserted into the bolt holes through bolts passing through the lower rotating plate, and is fixedly connected to the first slewing bearing.

[0013] Preferably, openings for equipment installation are provided at the centers of the upper rotating plate and the lower rotating plate, and a hanging rack for fixing the outboard motor is provided in the opening.

[0014] Preferably, the rotating pin assembly includes a rotating shaft one and a rotating shaft two which are opposite to each other at both ends of the rotating mechanism, one end of the rotating shaft one and the rotating shaft two are fixedly connected to the rotating mechanism, and the other end is rotatably connected to the inner wall of the power compartment, and a plurality of short shafts are evenly arranged on the outer periphery of the rotating shaft one and / or the rotating shaft two through shaft seats, and the short shafts are matched with a boat balancing device used to pry the rotating mechanism to flip.

[0015] The operator pries the short shaft through the boat paralleling device to drive the rotating pin shaft assembly to rotate. The slewing mechanism completes the rotation in the power compartment through the rotating pin shaft assembly, so that the slewing mechanism's disk is parallel to the horizontal plane when working, and the slewing mechanism's disk is perpendicular to the horizontal plane during transportation.

[0016] Preferably, the limit pin assembly comprises a limit pin and a fixing plate, wherein the limit pin is arranged on the power compartment, facing the rotating pin assembly, and the shaft in the limit pin is inserted and pulled out to position the rotating mechanism;

[0017] The fixing plate is arranged at the outer wall of the slewing mechanism connected to the rotating pin assembly. Pin holes are arranged at both ends of the fixing plate. A shaft connecting the fixing plate and the inner wall of the power cabin passes through the pin holes to position the fixing plate and thus the slewing mechanism.

[0018] The setting of the limit pin shaft assembly is used to position the slewing mechanism when the disk surface of the slewing mechanism is parallel to the horizontal plane or perpendicular to the horizontal plane.

[0019] Preferably, the power cabin runs through the river boat, the top and bottom of the power cabin are both open structures, the axial length of the power cabin is greater than the sum of the lengths of the rotating handle and the outboard motor, and the radial length of the power cabin is greater than the diameter of the rotating mechanism.

[0020] The design of the upper and lower openings of the power compartment enables the top of the steering handle to extend out of the river boat when the disk of the slewing mechanism is parallel to the horizontal plane, and the propeller in the outboard motor can extend out of the bottom of the river boat and into the river to work. The design that the axial length of the power compartment is greater than the sum of the lengths of the rotating handle and the outboard motor ensures that when the power system is housed inside the power compartment, the end of the rotating handle in the power system and the propeller at the tail can be completely housed in the power compartment; the setting that the radial length of the power compartment is greater than the diameter of the slewing mechanism ensures that the radial length of the power compartment can accommodate the rotation of the slewing mechanism inside.

[0021] Preferably, the river ark and the river pointed boat are made of high-strength lightweight steel;

[0022] The deck surface of the river ark is provided with anti-slip strips, the interior of the river ark is provided with anti-sinking bulkheads, and connection assemblies for splicing multiple pontoon bridge units are provided at both axial ends of the river ark;

[0023] The interior of the river boat is a plurality of cavity structures, and the plurality of cavity structures are used to store tools, install power systems, and provide buoyancy reserves.

[0024] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages:

[0025] (1) The pontoon bridge of the present invention has the ability to self-propel. After maneuvering to the operation area, the pontoon bridge unit is deployed by a carrier vehicle, and the power system is unfolded and started to realize the water maneuverability of the pontoon bridge. Compared with the pontoon bridge assisted by a motorboat, it has higher flexibility;

[0026] (2) The present invention has a small number of pontoon bridge operation units, which can effectively reduce the types of pontoon bridge equipment;

[0027] (3) The upper rotating plate in the power system of the present invention is detachable, and the disassembly and installation are convenient. By replacing the upper rotating plate and the power equipment on the upper rotating plate, the gasoline, diesel, and electric energy power systems can be replaced in special working environments. There is no need to dismantle the power system as a whole during later maintenance, which is easy to operate and has strong adaptability to field operations.

[0028] (4) The pontoon bridge power system of the present invention can adjust the propeller 360° through the steering handle to achieve multi-angle navigation. At the same time, the navigation direction can be fixed by plugging and pulling the pins, without the need for personnel to control the heading for a long time;

[0029] (5) The power system of the present invention is rotatably arranged in the power cabin, which can facilitate the power system to be completely stored inside the river boat during transportation, thereby reducing the overall volume of the pontoon bridge when stored and facilitating transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0031] Figure 2 It is a side cross-sectional view of a complete set of pontoon bridge structures.

[0032] Figure 3 It is a front cross-sectional view of the present invention.

[0033] Figure 4 It is a schematic diagram of the three-dimensional structure of the power system in the present invention.

[0034] Figure 5 It is a side view of the power system of the present invention.

[0035] Figure 6 This is a top view of the rotary mechanism of the present invention with half of the upper rotating plate removed.

[0036] Figure 7 It is an enlarged view of the connection between the slewing mechanism and the rotating shaft assembly in the present invention.

[0037] Figure 8 It is a three-dimensional structural schematic diagram of the pin pulling device in the present invention.

[0038] Fig. 9 This is a state diagram when the power system of the present invention is not housed in the power cabin.

[0039] Fig.10 This is a state diagram of the power system of the present invention when it is housed in the power cabin.

[0040] Among them: 100, river ark; 200, river sharp boat; 300, power system; 400, ear plate; 500, power compartment; 310, slewing mechanism; 301, battery pack; 302, fuel tank group; 303, steering handle; 304, outboard motor; 311, slewing bearing one; 312, slewing bearing two; 313, upper rotating plate; 314, lower rotating plate; 315, bolt; 316, opening; 317, hanging frame; 318, outer shell; 319, gap; 321, rotating shaft one; 322, rotating shaft two; 323, short shaft; 331, limit pin shaft; 332, fixing plate; 333, pin shaft hole; 341, pull pin; 342, bump. DETAILED DESCRIPTION

[0041] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0042] See attached Figures 1 to 10 , the present invention includes a river ark 100, a river boat 200 and a power system 300. The river ark 100 and the river boat 200 are made of high-strength lightweight steel and are rotatably connected through ear plates 400.

[0043] After the two river arks 100 are connected by the ear plates 400, they cooperate with the river sharp boat 200 on the other side of the river ark 100 to form a complete set of heavy pontoon bridge.

[0044] The Ark 100 in the river is the main operating load-bearing part of the pontoon bridge. The deck surface of the Ark 100 in the river is provided with anti-slip strips, which can have an anti-slip function after waves on the deck. The Ark 100 in the river is provided with anti-sinking compartments. After a single compartment is damaged, it can meet its operating functions within a certain period of time without capsizing. Connection assemblies for splicing multiple pontoon bridge units are provided at both axial ends of the Ark 100 in the river to meet the erection of the Caodumen bridge and floating bridge of the pontoon bridge system.

[0045] The interior of the river boat 200 is a plurality of cavity structures, which store tools, install the power system 300 and provide buoyancy reserve.

[0046] In the present embodiment, a power cabin 500 is provided on the river boat 200, and a power system 300 is provided in the power cabin 500. The power system 300 is rotatably arranged in the power cabin 500 by a rotating pin shaft assembly, and is positioned at different positions in the power cabin 500 by a limiting pin shaft assembly. The steering handle 303 in the power system 300 adjusts the rotation direction of the propeller to adjust the heading of the pontoon bridge. When the river boat 200 is folded with the river ark 100 through the ear plate 400 and placed on a transport vehicle, the power system 300 rotates in the power cabin 500, and the power system 300 is stored in the power cabin 500 as a whole, ensuring that the steering handle 303 and the outboard motor 304 in the power system 300 do not protrude abruptly from the river boat 200, which is inconvenient for the transportation of the pontoon bridge.

[0047] In this embodiment, the power system 300 includes a slewing mechanism 310, a battery pack 301, a fuel tank group 302, a steering handle 303 and an outboard motor 304. The slewing mechanism 310 is rotatably connected to the inner wall of the power compartment 500 through a rotating pin assembly. The battery pack 301 and the fuel tank group 302 are both detachably arranged on the end surface of the slewing mechanism 310 and rotate with the slewing mechanism 310. The steering handle 303 is fixedly connected to the upper rotating plate 313 in the slewing mechanism 310, driving the upper rotating plate 313 to rotate. At this time, the outboard motor 304 connected to the upper rotating plate 313 through the hanging frame 317 follows the rotation, thereby realizing the operation of rotating the steering handle 303 to adjust the direction of the outboard motor 304, and finally realizing the adjustment of the heading.

[0048] In this embodiment, the slewing mechanism 310 includes a slewing support 1 311, a slewing support 2 312, an upper rotating plate 313, a lower rotating plate 314 and a shell 318. The slewing support 1 311 and the slewing support 2 312 are two concentric rings. The inner ring of the slewing support 1 311 is rotatably connected to the outer ring of the slewing support 2 312. A gap 319 is left between the outer ring of the slewing support 1 311 and the shell 318 and the slewing support 1 311 is fixedly connected to the shell 318. The upper rotating plate 313 is detachably arranged on the top of the slewing support 2 312 and rotates with the slewing support 2 312. The lower rotating plate 314 is fixedly arranged on the bottom of the slewing support 1 311. The slewing support 2 312 rotates relative to the slewing support 1 311, so that the steering handle 303 can drive the upper rotating plate 313 to rotate.

[0049] In this embodiment, a gear structure is provided on the circumference of the upper rotating plate 313, and two pull pins 341 for limiting the rotation of the upper rotating plate 313 are inserted and pulled out in the gear structure. The pull pins 341 are inserted and pulled out in the gap 319 between the rotating support 311 and the outer shell 318 on both sides of the connection between the rotating mechanism 310 and the rotating pin shaft assembly. A protrusion 342 is provided on the pull pin 341. When the pull pin 341 is inserted into the gap 319, the protrusion 342 engages with the gear structure on the upper rotating plate 313.

[0050] When the upper rotating plate 313 rotates to drive the outboard motor 304 to rotate to a certain angle, in the hope of maintaining the navigation direction of the pontoon bridge at this time, the operator inserts the pull pins 341 into the gaps between the slewing support 311 and the housing 318 on both sides of the connection between the slewing mechanism 310 and the rotating pin assembly. At this time, the pull pin 341 extends into the gap 319, and the pin rod of the pull pin 341 contacts one side of the rotating pin assembly, and the protrusion 342 on the pull pin 341 meshes with the gear structure on the upper rotating plate 313. At this time, the pin rod of the pull pin 341 is limited by the rotating pin assembly. No matter which side the upper rotating plate 313 rotates to, it will be limited by one pull pin 341 and the rotating pin assembly. That is, after inserting two pull pins 341, the fixing of the pontoon bridge's heading is completed.

[0051] In this embodiment, a plurality of bolt holes are evenly distributed on the top end surface of the second slewing support 312, and the upper rotating plate 313 is inserted into the bolt holes by bolts 315 passing through the upper rotating plate 313, and is fixedly connected to the second slewing support 312; a plurality of bolt holes are evenly distributed on the bottom end surface of the first slewing support 311, and the lower rotating plate 314 is inserted into the bolt holes by bolts 315 passing through the lower rotating plate 314, and is fixedly connected to the first slewing support 311.

[0052] In this embodiment, an opening 316 for equipment installation is provided at the center of the upper rotating plate 313 and the lower rotating plate 314 , and a hanging frame 317 for fixing the outboard motor 304 is provided in the opening 316 .

[0053] In this embodiment, the rotating pin assembly includes a rotating shaft 1 321 and a rotating shaft 2 322 opposite to each other at the two ends of the rotating mechanism 310, and one end of the rotating shaft 1 321 and the rotating shaft 2 322 are fixedly connected to the rotating mechanism 310. At this time, the ends of the rotating shaft 1 321 and the rotating shaft 2 322 connected to the rotating mechanism 310 penetrate the outer shell of the rotary machine 310 and are fixedly connected to the rotating support 1 311. The other ends of the rotating shaft 1 321 and the rotating shaft 2 322 are rotatably connected to the inner wall of the power compartment 500. A plurality of short shafts 323 are evenly arranged on the outer periphery of the second rotating shaft 322 through the shaft seat. The short shafts 323 match the boat-prying tool used to pry the slewing mechanism 310 to flip. The operator pries the short shafts 323 through the boat-prying tool to drive the rotating pin assembly to rotate. The slewing mechanism 310 completes the rotation in the power compartment 500 through the rotating pin assembly, so that the disk of the slewing mechanism 310 is parallel to the horizontal plane when working, and the disk of the slewing mechanism 310 is perpendicular to the horizontal plane when transporting.

[0054] In this embodiment, the limit pin assembly includes a limit pin 331 and a fixed plate 332. The limit pin 331 is arranged on the power compartment 500, facing the rotating pin assembly, and the axis in the limit pin 331 is inserted and pulled out to position the rotating mechanism 310; the fixed plate 332 is arranged on the outer wall of the rotating mechanism 310 connected to the rotating pin assembly, and pin holes 333 are arranged at both ends of the fixed plate 332. The pin hole 333 is penetrated by an axis connecting the fixed plate 332 and the inner wall of the power compartment 500 to position the fixed plate 332, thereby positioning the rotating mechanism 310. The setting of the limit pin assembly is used to position the rotating mechanism 310 when the disk of the rotating mechanism 310 is parallel to the horizontal plane or perpendicular to the horizontal plane.

[0055] In this embodiment, the power compartment 500 runs through the river boat 200, and the top and bottom of the power compartment 500 are both open structures, so that when the disk of the rotating mechanism 310 is parallel to the horizontal plane, the top of the steering handle 303 can extend out of the river boat 200 to allow the operator to control it, and the propeller at the bottom of the outboard motor 304 can extend out of the bottom of the river boat 200 and extend into the river to work.

[0056] The axial length of the power compartment 500 is greater than the sum of the lengths of the rotating handle 303 and the outboard motor 304, ensuring that when the power system 300 is housed inside the power compartment 500, the end of the rotating handle 303 in the power system 300 and the propeller at the tail of the outboard motor 304 can be completely housed inside the power compartment 500.

[0057] The radial length of the power cabin 500 is greater than the diameter of the rotary mechanism 310 , ensuring that the radial length of the power cabin 500 can accommodate the rotation of the rotary mechanism 310 therein.

[0058] In the present invention, when the pontoon bridge is in the process of transportation, the operator first takes out the shaft between the fixed plate 323 and the power cabin 500, takes out the shaft in the limit pin 331, and releases the state of mutual positioning between the slewing mechanism 310 and the power cabin 500. At this time, the slewing mechanism 310 is rotated until the disk of the slewing mechanism 310 is perpendicular to the horizontal plane. At this time, the entire power system 300 is completely received into the river boat 200, and the shaft between the fixed plate 323 and the power cabin 500 is inserted, and the shaft in the limit pin 331 is inserted to locate the relative position between the power system 300 and the power cabin 500. In the process of flipping the slewing mechanism 310, the operator uses the boat tool to move the short shaft 323 evenly arranged on the outer wall of the rotating shaft 2 322 to realize the rotation of the slewing mechanism 310, thereby preventing injury to personnel caused by directly rotating the slewing mechanism.

[0059] After the power system 300 is stored, the river boat 200 is rotated through the ear plate 400, gradually rotating from a horizontal state with the river ark 100 to above the river ark 100, overlapping with the river ark 100. At this time, the entire pontoon bridge is in a folded state. After being transferred to the transport vehicle and transported to the operating waters, it is put into the operating waters and unfolded, and the above steps are repeated to adjust the disk of the slewing mechanism 310 to be parallel to the horizontal plane. At this time, the propeller part of the outboard motor 304 extends into the water. After starting the power system, the adjustment of the navigation direction of the pontoon bridge is completed by turning the steering handle 303.

[0060] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A heavy pontoon bridge equipped with power and capable of steering, characterized in that: The invention comprises a river ark, a river sharp boat and a power system. The river ark is rotatably connected with the river sharp boat through ear plates. The river sharp boat is provided with a power cabin, and a power system is provided in the power cabin. The power system is rotatably arranged in the power cabin through a rotating pin shaft assembly and is positioned in the power cabin through a limit pin shaft assembly. The steering handle in the power system adjusts the rotation direction of the slewing mechanism to adjust the heading of the pontoon bridge.

2. A powered heavy pontoon bridge with steering capability according to claim 1, characterized in that: The power system includes an outboard motor, a slewing mechanism, a battery pack, a fuel tank group and a steering handle. The slewing mechanism is rotatably connected to the inner wall of the power compartment through a rotating pin shaft assembly. The battery pack and the fuel tank group are detachably arranged on the end surface of the slewing mechanism and rotate with the slewing mechanism. The outboard motor is connected to the slewing mechanism through a hanging frame and rotates with the slewing mechanism. The steering handle is fixedly connected to the slewing mechanism to drive the upper rotating plate in the slewing mechanism to rotate on a horizontal plane.

3. A powered heavy pontoon bridge with steering capability according to claim 2, characterized in that: The slewing mechanism includes an outer shell, a slewing support 1, a slewing support 2, an upper rotating plate and a lower rotating plate. The slewing support 1 and the slewing support 2 are two concentric rings. The inner ring of the slewing support 1 is rotatably connected to the outer ring of the slewing support 2. A gap is left between the outer ring of the slewing support 1 and the outer shell and the slewing support 1 is fixedly connected to the outer shell. The upper rotating plate is detachably arranged on the top of the slewing support 2 and rotates with the slewing support 2. The lower rotating plate is fixedly arranged on the bottom of the slewing support 1.

4. A powered heavy pontoon bridge with steering capability according to claim 3, characterized in that: A gear structure is arranged on the circumference of the upper rotating plate, and two pull pins for limiting the rotation of the upper rotating plate are inserted and pulled out in the gear structure. The pull pins are inserted and pulled out in the gap between the rotating support 1 and the outer shell on both sides of the connection between the rotating mechanism and the rotating pin shaft assembly, and a protrusion is arranged on the pull pin, and the protrusion meshes with the gear structure on the upper rotating plate when the pull pin is inserted into the gap.

5. A powered heavy pontoon bridge with steering capability according to claim 3, characterized in that: A plurality of bolt holes are evenly distributed on the top end surface of the slewing bearing No. 2, and the upper rotating plate extends into the bolt holes after passing through the upper rotating plate by bolts, and is fixedly connected to the slewing bearing No. 2; a plurality of bolt holes are evenly distributed on the bottom end surface of the slewing bearing No. 1, and the lower rotating plate extends into the bolt holes after passing through the lower rotating plate by bolts, and is fixedly connected to the slewing bearing No.

1.

6. A powered heavy pontoon bridge with steering capability according to claim 3, characterized in that: An opening for equipment installation is provided at the center of the upper rotating plate and the lower rotating plate, and a hanging frame for fixing the outboard motor is arranged in the opening.

7. A powered heavy pontoon bridge with steering capability according to claim 1, characterized in that: The rotating pin assembly includes a rotating shaft 1 and a rotating shaft 2 which are opposite to each other at the two ends of the rotating mechanism. One end of the rotating shaft 1 and the rotating shaft 2 are fixedly connected to the rotating mechanism, and the other end is rotatably connected to the inner wall of the power compartment. A plurality of short shafts are evenly arranged on the outer periphery of the rotating shaft 1 and / or the rotating shaft 2 through shaft seats, and the short shafts are matched with a boat balancing device used to pry the rotating mechanism to flip.

8. A powered heavy pontoon bridge with steering capability according to claim 1, characterized in that: The limit pin assembly includes a limit pin and a fixing plate. The limit pin is arranged on the power compartment, facing the rotating pin assembly, and the shaft in the limit pin is inserted and pulled out to position the rotating mechanism. The fixing plate is arranged at the outer wall of the slewing mechanism connected to the rotating pin assembly. Pin holes are arranged at both ends of the fixing plate. A shaft connecting the fixing plate and the inner wall of the power cabin passes through the pin holes to position the fixing plate and thus the slewing mechanism.

9. A powered heavy pontoon bridge with steering capability according to claim 1, characterized in that: The power cabin runs through the river boat, and the top and bottom of the power cabin are both open structures. The axial length of the power cabin is greater than the sum of the lengths of the rotating handle and the outboard motor, and the radial length of the power cabin is greater than the diameter of the rotating mechanism.

10. A powered heavy pontoon bridge with steering capability according to claim 1, characterized in that: The river ark and river pointed boat are made of high-strength lightweight steel; The deck surface of the river ark is provided with anti-slip strips, the interior of the river ark is provided with anti-sinking bulkheads, and connection assemblies for splicing multiple pontoon bridge units are provided at both axial ends of the river ark; The interior of the river boat is a plurality of cavity structures, and the plurality of cavity structures are used to store tools, install power systems, and provide buoyancy reserves.

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