Bridge erecting machine

Abstract

The utility model relates to a bridge erecting machine. The bridge girder erection machine comprises a rack body, a power module and a power utilization assembly, and the power module and the power utilization assembly are both assembled on the rack body. The power supply module comprises a range extender and a power battery, the power battery is connected between the range extender and the electric component, the range extender and the power battery are both configured to output direct current, and the output voltage of the range extender is configured to be higher than the bus voltage of the power battery. The range extender and the power battery are arranged in the power module, and the power battery can be used for storing surplus electric energy of the range extender, so that the range extender always keeps working in a high-heat-efficiency interval, oil consumption and tail gas emission of the range extender are reduced, and the electric energy stored in the power battery is also used for being supplied to electric component equipment. And the range extender is adopted to output electric energy to be used by the electric component, so that the bridge girder erection machine can be applied to various use scenes. Therefore, according to the bridge girder erection machine, the purpose of environmental protection can be achieved, and meanwhile the bridge girder erection machine can be used in various occasions.

Description

Technical Field

[0001] This application relates to the field of bridge erecting machine technology, and in particular to bridge erecting machines. Background Technology

[0002] In today's era, with society developing at a breakneck pace, transportation infrastructure construction has become a key force driving economic growth and regional collaboration. As cities expand and urban-rural integration accelerates, roads spread across the land like a spiderweb, highways crisscross, railway lines extend continuously, and urban rail transit weaves between skyscrapers. Behind all this, bridge-building machines, as the core "weapon" in bridge construction, are playing an irreplaceable role, and their demand is experiencing rapid growth.

[0003] Bridge erecting machines, bearing the crucial responsibility of precisely and efficiently placing precast beams onto bridge piers, are a key component of bridge construction. In the highway construction sector, to create rapid transit routes between cities and regions, numerous viaducts and cross-river / sea bridges have been constructed. With their superior performance, bridge erecting machines can quickly and accurately erect multiple precast beams daily, significantly shortening the construction cycle of highway bridges and enabling the dream of transforming natural barriers into thoroughfares to be realized more rapidly.

[0004] However, in the current situation, existing bridge erecting machines have revealed the drawback of high power consumption during operation, which undoubtedly runs counter to the energy-saving and environmentally friendly development goals strongly advocated by society today, and has become one of the key issues that the industry urgently needs to solve. Utility Model Content

[0005] Therefore, it is necessary to provide a bridge erecting machine that addresses the issue of high power consumption.

[0006] A bridge erecting machine includes:

[0007] The rack body, power supply module, and power components are all assembled in the rack body;

[0008] The power module includes a range extender and a power battery. The power battery is connected between the range extender and the power components. Both the range extender and the power battery are configured to output DC power, and the output voltage of the range extender is configured to be higher than the bus voltage of the power battery.

[0009] In one embodiment, the power battery has a first port, a second port, and a third port, and the power-consuming components include a first power-consuming component and a second power-consuming component;

[0010] The first port is connected to the range extender, the second port is connected to the first power supply component, and the third port is connected to the second power supply component.

[0011] In one embodiment, the power module is further provided with a charging interface, and the power battery is provided with a fourth port. The charging interface is connected to the fourth port, so that the power battery is configured to be electrically connected to an external power source.

[0012] In one embodiment, the bridge erecting machine further includes a DC bus, which is connected between the second port and the first power supply component.

[0013] In one embodiment, the first electrical component includes a first motor, a second motor, a third motor, and a fourth motor;

[0014] The frame body includes a main beam, a crane, and outrigger assemblies. The crane is equipped with a lifting device. A first motor is configured to drive the lifting device to rise, and the first motor also drives the lifting device to generate electricity during the descent of the lifting device. A second motor is configured to drive the crane to move relative to the main beam. A third motor is configured to drive the corresponding outrigger in the outrigger assembly to move relative to the main beam.

[0015] The bridge erecting machine also includes a hydraulic system, which includes an oil pump unit, and a fourth motor is configured to drive the oil pump unit to operate in order to drive the outriggers to rise and fall via the hydraulic system.

[0016] In one embodiment, the power module further includes a frequency converter cabinet, which is equipped with a first frequency converter, a second frequency converter and a third frequency converter.

[0017] One end of the first frequency converter is connected to the DC bus, and the other end of the first frequency converter is connected in parallel to the first motor and the second motor.

[0018] One end of the second frequency converter is connected to the DC bus, and the other end of the second frequency converter is connected to the third motor;

[0019] One end of the third frequency converter is connected to the DC bus, and the other end of the third frequency converter is connected to the fourth motor.

[0020] In one embodiment, the bridge erecting machine further includes a gearbox, which is driven between the first motor and the spreader, and is configured to increase the rotational speed of the first motor.

[0021] In one embodiment, the power module further includes an auxiliary power cabinet, which is equipped with an inverter, a first pre-charge circuit, a second pre-charge circuit and a third pre-charge circuit.

[0022] The inverter is connected between the third port and the second power-consuming component, and a first pre-charge circuit is also connected between the inverter and the third port;

[0023] The second precharge circuit is connected between the range extender and the first port;

[0024] The third precharge circuit is connected between the second port and the DC bus.

[0025] In one embodiment, the second electrical component includes a lighting system and / or an air conditioning system and / or a control system.

[0026] In one embodiment, the bridge erecting machine further includes an installation platform, which is assembled to the frame body and is used to support the power supply module and electrical components.

[0027] The aforementioned bridge erecting machine incorporates a range extender and a power battery in its power module. The power battery stores excess energy from the range extender, ensuring it operates within its high thermal efficiency range, thus reducing fuel consumption and emissions. The stored energy is also used to power other electrical components. By utilizing the range extender's output to power these components, the bridge erecting machine can be applied to various scenarios. Therefore, the bridge erecting machine according to this application not only achieves environmental protection goals but also supports diverse applications. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a bridge erecting machine according to an embodiment of this application.

[0029] Figure 2 This is a schematic diagram of the structure of an installation platform according to an embodiment of this application.

[0030] Figure 3 This is a schematic diagram showing the connection relationship between a power module and an electrical component according to an embodiment of this application.

[0031] Figure label:

[0032] 100. Bridge erecting machine; 1. Frame body; 11. Main beam; 12a. Front outrigger; 12b. Middle outrigger; 12c. Rear outrigger; 13. Crane; 13a. Lifting device; 14. Installation platform; 21. Range extender; 21a. Engine; 21b. DC generator; 22. Power battery; 22a. First port; 22b. Second port; 22c. Third port; 22d. Fourth port; 23. Charging interface; 24. Variable frequency electrical cabinet; 24 1. First frequency converter; 242. Second frequency converter; 243. Third frequency converter; 25. Auxiliary power supply cabinet; 251. Inverter; 252. First pre-charge circuit; 253. Second pre-charge circuit; 254. Third pre-charge circuit; 3. DC bus; 4. First electrical component; 41. First motor; 42. Second motor; 43. Third motor; 44. Fourth motor; 5. Second electrical component; 6. Oil pump device; 7. Fuel storage device; 200. Object. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0034] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0035] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0039] Currently, bridge erecting machines are primarily powered in two ways. One method involves a diesel generator directly supplying electricity to the machine's electrical systems during operation. In other words, the bridge erecting machine can only operate with power if the diesel generator is running. Therefore, the diesel generator must operate continuously during the machine's operation. However, diesel generators suffer from unavoidable problems such as high energy consumption and noise levels, resulting in significant air pollution, which contradicts the concept of green and sustainable development.

[0040] Another approach is to use a power battery to drive the bridge erecting machine in a purely electric manner. However, due to the high power consumption, harsh operating environment, and long continuous working time of the bridge erecting machine, it is greatly affected by the range and charging conditions of the power battery. Moreover, most bridge erecting machine construction sites are located in remote areas and it is difficult to have a stable charging environment. Therefore, this type of purely electric bridge erecting machine is difficult to apply to different usage scenarios.

[0041] See Figures 1 to 3 As shown, in some embodiments of this application, the bridge erecting machine 100 includes a frame body 1, a power supply module, and power components. The power supply module and power components are both assembled on the frame body 1, and the power supply module is used to provide power to all the power-consuming equipment in the power components so that the power-consuming equipment in the power components can be powered on and operate.

[0042] The power module includes a range extender 21 and a power battery 22. The power battery 22 is connected between the range extender 21 and the power-consuming components. Both the range extender 21 and the power battery 22 are configured to output DC power, and the output voltage of the range extender 21 is higher than the bus voltage of the power battery 22. See, for example... Figure 3 As shown, the range extender 21 includes an engine 21a and a DC generator 21b. The engine 21a is configured to drive the DC generator 21b to output DC power, thereby enabling the range extender 21 to output DC power. Since the power battery 22 is connected between the range extender 21 and the electrical components, and the output voltage of the range extender 21 is higher than the bus voltage of the power battery 22, the electrical components preferentially utilize the electrical energy output by the range extender 21. When there is surplus electrical energy output by the range extender 21, the surplus energy can be stored in the power battery 22, i.e., the surplus energy can be used to charge the power battery 22. The stored electrical energy can also be supplied to the electrical components for use, thus avoiding waste when there is surplus electrical energy output by the range extender 21.

[0043] Because the excess electrical energy of the range extender 21 is stored in the power battery 22, the range extender 21 can always operate within its optimal thermal efficiency range, allowing it to operate with optimal fuel consumption. The range extender 21 outputs more electrical energy to supply electrical components while maintaining the same fuel consumption. When the range extender 21 has excess electrical energy, it can also store the excess energy in the power battery 22. Therefore, compared to current bridge erecting machines, the bridge erecting machine 100 according to this application consumes less fuel while outputting the same amount of electricity, making it more environmentally friendly. Furthermore, because the bridge erecting machine 100 according to this application is equipped with the range extender 21, it can continue to operate even in environments without charging facilities, thus making it applicable to various usage environments.

[0044] According to the bridge erecting machine 100 of this application, the power module includes a range extender 21 and a power battery 22. The power battery 22 can store excess electrical energy from the range extender 21, ensuring that the range extender 21 always operates within its optimal thermal efficiency range, reducing fuel consumption and exhaust emissions. The stored energy in the power battery 22 is also used to power electrical components. Furthermore, since the range extender 21 outputs electrical energy to power electrical components, the bridge erecting machine 100 can be applied to various usage scenarios. Therefore, the bridge erecting machine 100 according to this application not only achieves environmental protection goals but also can be applied to a variety of usage scenarios.

[0045] It is worth noting that, according to the bridge erecting machine 100 of this application, since the output voltage of the range extender 21 is higher than the bus voltage of the power battery 22, the electrical energy output by the range extender 21 can be preferentially used when the electrical components consume electrical energy.

[0046] Based on this, in some embodiments of this application, the bridge erecting machine 100 has at least the following four modes: pure electric mode, power following mode, power enhancement mode, and range-extending charging mode.

[0047] Pure electric mode: When the electrical energy stored in the power battery 22 is sufficient to power the electrical components of the bridge erecting machine 100, the range extender 21 stops, and the electrical energy consumed by the electrical components is provided by the power battery 22.

[0048] Power Follower Mode: When the overall power demand of the bridge erecting machine 100 is stable and the range extender 21 is operating in the high-efficiency range, the electrical energy output by the range extender 21 flows through the power battery 22 and is directly delivered to the electrical components. It should be understood that in this mode, the power battery 22 acts as a "conductor," thus reducing efficiency conversion losses during power transmission.

[0049] Power Enhancement Mode: When the bridge erecting machine 100 requires high power, the range extender 21 and the power battery 22 simultaneously provide power to the electrical components of the bridge erecting machine 100 to meet the high power requirements of the bridge erecting machine 100.

[0050] Range-extending charging mode: When the range extender 21 outputs excess electrical energy, it transfers the excess energy to the power battery 22 for storage. Because the power battery 22 can continuously store electrical energy, the range extender 21 can maintain a high-power operating state, ensuring optimal fuel consumption. Thus, with the same fuel consumption, the range extender 21 can output more electrical energy.

[0051] See Figures 1 to 3 As shown in some embodiments of this application, the frame body 1 includes a main beam 11, outrigger assemblies, and a crane 13. The outrigger 12b assembly includes a front outrigger 12a, a middle outrigger 12b, and a rear outrigger 12c. The front outrigger 12a, middle outrigger 12b, and rear outrigger 12c are all movably mounted on the main beam 11. With the cooperative operation of the outrigger assemblies, the main beam 11 moves along its own length, thereby enabling the frame body 1 to travel. Because the frame body 1 can travel, the bridge erecting machine 100 can continuously lay the bridge deck along the laying direction of the bridge piers. For example, the bridge erecting machine 100 continuously assembles the bridge deck onto two adjacent piers, thus completing the bridge deck paving work.

[0052] Crane 13 is mounted on the main beam 11. Crane 13 is equipped with a first motor 41, which drives the lifting device 13a of crane 13 to lift the object 200, thereby achieving the effect of crane 13 lifting the object 200. For example, during the paving of the bridge deck, the bridge deck is lifted by the lifting device 13a to a certain height. Then, the second motor 42 of crane 13 works, driving crane 13 to move forward along the length of the main beam 11, thereby moving the bridge deck lifted by the lifting device 13a forward, so that the bridge deck reaches directly above the two pre-set piers. Then, the lifting device 13a lowers the bridge deck and fixes the bridge deck to the two piers, thereby completing the paving of the bridge deck.

[0053] It is worth noting that during the descent of the lifting device 13a, the kinetic energy generated during the descent is used to drive the first motor 41 to output electrical energy, and the electrical energy output by the first motor 41 is transferred to the power battery 22 for storage, thereby replenishing the power battery 22's electrical energy. Compared to current bridge erecting machines, which typically have braking resistors to dissipate the energy generated during the descent of the lifting device 13a, the bridge erecting machine 100 according to this application not only avoids the waste of kinetic energy during the descent of the lifting device 13a, but also replenishes the power battery 22's electrical energy. Furthermore, this also eliminates the need for braking resistors in the bridge erecting machine 100 according to this application, reducing the production cost of the bridge erecting machine 100.

[0054] Furthermore, since the lifting device 13a of the bridge erecting machine 100 needs to frequently lift objects 200 during its use, and each time the lifting device 13a lifts an object 200, there is also a process of the lifting device 13a falling. Therefore, by utilizing the kinetic energy of the lifting device 13a falling process to convert it into electrical energy and store it in the power battery 22, the total energy consumption of the bridge erecting machine 100 can be effectively reduced, thus achieving the goal of environmental protection.

[0055] It should be added that, in some embodiments, the bridge erecting machine 100 may also include a gearbox, which is connected between the first motor 41 and the lifting device 13a. During the descent of the lifting device 13a, the gearbox is used to increase the rotational speed of the motor shaft of the first motor 41, thereby increasing the electrical energy output by the first motor 41 during the descent of the lifting device 13a. It is important to understand that the power generation device operates based on the principle of electromagnetic induction. When a conductor (usually a coil) moves in a magnetic field, cutting magnetic field lines, an induced electromotive force is generated in the conductor. According to Faraday's law of electromagnetic induction, with a fixed magnetic field strength and number of coil turns, the speed at which the conductor cuts the magnetic field lines is proportional to the rotational speed of the power generation device. Therefore, when the rotational speed in the power generation device increases, the induced electromotive force increases, and the output power increases. This allows the first motor 41 to output more electrical energy to replenish the power battery 22.

[0056] The third motor 43 is mounted on the legs of the frame body 1. For example, the front leg 12a, middle leg 12b, and rear leg 12c of the frame body 1 are all equipped with the third motor 43. The third motor 43 mounted on the front leg 12a drives the front leg 12a to move relative to the main beam 11; the third motor 43 mounted on the middle leg 12b drives the middle leg 12b to move relative to the main beam 11; and the third motor 43 mounted on the rear leg 12c drives the rear leg 12c to move relative to the main beam 11. (Combined with...) Figure 2 and Figure 3 As shown, the fourth motor 44 is the oil pump motor in the hydraulic system of the bridge erecting machine 100. The fourth motor 44 is configured to drive the oil pump device 6 in the hydraulic system to operate, so as to drive the outriggers (front outrigger 12a and / or middle outrigger 12b and / or rear outrigger 12c) to rise and fall through the hydraulic system.

[0057] It should be added that, in some embodiments of this application, the power-consuming components include a first power-consuming component 4 and a second power-consuming component 5, wherein the first power-consuming component 4 includes a first motor 41, a second motor 42, a third motor 43 and a fourth motor 44.

[0058] See Figure 3As shown, in some embodiments of this application, the power battery 22 has a first port 22a, a second port 22b, and a third port 22c. The first port 22a is connected to the range extender 21, the second port 22b is connected to the first electrical component 4 in the electrical components, and the third port 22c is connected to the second electrical component 5 in the electrical components. This allows the electrical energy output by the range extender 21 to be directly output to the first electrical component 4 and the second electrical component 5 through the power battery 22. Furthermore, when the range extender 21 outputs surplus electrical energy, it is used to charge the power battery 22. When the power battery 22 has sufficient charge to supply the electrical components, the range extender 21 can enter a shutdown state, allowing the bridge erecting machine 100 to enter pure electric mode.

[0059] See Figure 3 As shown, in some embodiments of this application, the bridge erecting machine 100 is further provided with a DC bus 3, which is connected between the second port 22b and the first power-consuming component 4. Specifically, one end of the DC bus 3 is electrically connected to the second port 22b, and the other end of the DC bus 3 is connected in parallel to the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44, so that the electrical energy output by the range extender 21 and / or the power battery 22 is transmitted to the first motor 41, the second motor 42, the third motor 43, and the fourth motor 44 respectively via the DC bus 3. It is also worth noting that when the lifting device 13a falls to drive the first motor 41 to output electrical energy, the electrical energy output by the first motor 41 is transmitted to the power battery 22 for storage via the DC bus 3, thereby achieving the effect of replenishing the electrical energy of the power battery 22.

[0060] See Figure 2 and Figure 3 As shown, in some embodiments of this application, the power supply module further includes a frequency converter cabinet 24, which houses a first frequency converter 241, a second frequency converter 242, and a third frequency converter 243. One end of the first frequency converter 241 is connected to the DC bus 3, and the other end is connected in parallel to a first motor 41 and a second motor 42. This allows the DC power input from the DC bus 3 to be converted into suitable AC power by the first frequency converter 241 and then transmitted to the first motor 41 and the second motor 42, ensuring stable power supply and operation of both motors. The second frequency converter 242 is connected between the DC bus 3 and the third motor 43, allowing the DC power input from the DC bus 3 to be converted into suitable AC power by the second frequency converter 242 and then transmitted to the third motor 43, ensuring stable power supply and operation of the third motor 43. The third frequency converter 243 is connected between the DC bus 3 and the fourth motor 44, so that the DC power input from the DC bus 3 can be converted into suitable AC power by the third frequency converter 243 and then the fourth motor 44 can be stably powered on and operated.

[0061] See Figure 2 and Figure 3 As shown, in some embodiments of this application, the power module further includes an auxiliary power cabinet 25, which is equipped with an inverter 251, a first pre-charge circuit 252, a second pre-charge circuit 253, and a third pre-charge circuit 254. The inverter 251 is connected between the third port 22c and the second power-consuming component 5. Under the action of the inverter 251, DC power can be converted into suitable AC power for input to the second power-consuming component 5. In some embodiments, the second power-consuming component 5 includes a lighting system and / or an air conditioning system and / or a control system.

[0062] Furthermore, a first pre-charge circuit 252 is connected between the inverter 251 and the third port 22c, a second pre-charge circuit 253 is connected between the range extender 21 and the first port 22a, and a third pre-charge circuit 254 is connected between the second port 22b and the DC bus 3. It is important to understand that the pre-charge circuits (i.e., the first pre-charge circuit 252, the second pre-charge circuit 253, and the third pre-charge circuit 254) protect the main circuit components, ensure stable system startup, and reduce electromagnetic interference (EMI). A pre-charge circuit is a circuit used in electrical systems to slowly charge energy storage components (such as capacitors) during the initial power-up of the main circuit. It mainly consists of a pre-charge resistor, a pre-charge contactor or switch, and a control circuit. When the system starts up, the pre-charge circuit operates first, limiting the charging current to avoid current surges to the main circuit components. The pre-charge circuit includes a pre-charge resistor and a pre-charge switch; the pre-charge resistor primarily limits the charging current, while the pre-charge switch controls the on / off state of the pre-charge circuit.

[0063] It is worth noting that the third pre-charge circuit 254 is connected between the second port 22b and the DC bus 3. Since the DC bus 3 is connected in parallel with the first motor 41, the second motor 42, the third motor 43 and the fourth motor 44, the first motor 41, the second motor 42, the third motor 43 and the fourth motor 44 can share a third pre-charge circuit 254, thereby reducing the production cost of the bridge erecting machine 100.

[0064] See Figure 3As shown, in some embodiments of this application, the power module is further provided with a charging interface 23, and the power battery 22 is provided with a fourth port 22d. The charging interface 23 is connected to the fourth port 22d, so that the power battery 22 is configured to be electrically connected to an external power source. For example, the external power source can be a charging pile, so that the bridge erecting machine 100 according to this application can charge the power battery 22 through the charging pile. The power battery 22 stores electrical energy for use by the bridge erecting machine 100. Since the bridge erecting machine 100 according to this application can supplement electrical energy through an external power source, such as when the external power source is mains power, it can use mains power to supplement the bridge erecting machine 100 when the mains power price is low, which is beneficial to reducing the operating cost of the bridge erecting machine 100. In addition, when there is a stable mains power supply, the range extender 21 can stop working, so that all the electrical energy required by the bridge erecting machine 100 is supplied by mains power. This also avoids the range extender 21 consuming fuel, reduces the emissions of the bridge erecting machine 100, and thus achieves the purpose of environmental protection. Based on this, the bridge erecting machine 100 according to this application also has an external charging mode: the power battery 22 in the bridge erecting machine 100 can be charged by connecting to an external power source. For example, the bridge erecting machine 100 can be supplemented with power by mains power.

[0065] Furthermore, since the bridge erecting machine 100 according to this application can be recharged by an external power source through the charging interface 23, when the range extender 21 fails, the bridge erecting machine 100 can be continuously recharged by an external power source, ensuring that the bridge erecting machine 100 can continue to work, avoiding delays in the construction period due to the failure of the range extender 21, and ensuring that the construction operation is carried out in an orderly manner.

[0066] See also Figure 2 and Figure 3 As shown, in some embodiments of this application, since the range extender 21 is configured to output DC power, the DC power output by the range extender 21 is directly applied to the power-consuming components after passing through the power battery 22. A frequency converter (e.g., first frequency converter 241, second frequency converter 242, and third frequency converter 243) is provided between the range extender 21 and the first power-consuming component 4 (e.g., first motor 41, second motor 42, third motor 43, and fourth motor 44), and an inverter 251 is provided between the range extender 21 and the second power-consuming component 5. This allows the frequency converter to convert the DC power output by the range extender 21 into suitable AC power for use in the first power-consuming component 4, ensuring stable and efficient power supply to the first power-consuming component 4. Simultaneously, the inverter 251 converts the DC power output by the range extender 21 into suitable AC power for use in the second power-consuming component 5, thereby meeting diverse construction power needs. It should be noted that the electrical equipment in the second electrical component 5 may also include temporary electrical equipment used during on-site construction.

[0067] Compared to current bridge erecting machines, the generators of current bridge erecting machines output alternating current (AC). Therefore, a rectifier is required between the generator and the electrical components in the bridge erecting machine to ensure the normal operation of the electrical components. However, rectifiers are more expensive than frequency converters and inverters 251. Therefore, according to the bridge erecting machine 100 of this application, the range extender 21 is configured to output direct current (DC), and a frequency converter is installed between the range extender 21 and the first electrical component 4, and an inverter 251 is installed between the range extender 21 and the second electrical component 5. This significantly reduces the production cost of the bridge erecting machine 100 while ensuring the normal and stable operation of the first electrical component 4 and the second electrical component 5.

[0068] See Figure 1 and Figure 2 As shown, the bridge erecting machine 100 may further include a mounting platform 14, which is assembled to the frame body 1 and serves to support the power supply module and electrical components. For example, see [reference needed]. Figure 1 As shown in one example of this application, the mounting platform 14 is fixedly connected to the main beam 11 in the frame body 1. Therefore, during the movement of the main beam 11, the main beam 11 can drive the mounting platform 14 to move. Further, see [reference needed]. Figure 2 As shown, all power modules are mounted on the mounting platform 14, which facilitates the layout of wiring (e.g., circuits) in the bridge erecting machine 100. For example, taking the circuit connecting the power module and the crane trolley 13 as an example, since the crane trolley 13 moves relative to the main beam 11, and the power module is fixed relative to the main beam 11, it can be understood that only the crane trolley 13 moves relative to the power module. Furthermore, since the length of the main beam 11 is limited, the crane trolley 13 and the power module have clearly defined maximum and minimum distances. Therefore, for the circuit connecting the power module and the crane trolley 13, it is sufficient to consider that the wiring meets the maximum distance between the crane trolley 13 and the power module.

[0069] See Figure 2 As shown, the range extender 21, power battery 22, frequency converter cabinet 24, and auxiliary power supply cabinet 25 are all mounted on the mounting platform 14. The mounting platform 14 also houses a fuel storage device 7, which stores fuel and supplies fuel to the range extender 21. The fourth motor 44 and the fuel pump unit 6 are also mounted on the mounting platform 14.

[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A bridge erecting machine, characterized in that, include: The rack body, power module, and power components are all assembled in the rack body. The power module includes a range extender and a power battery. The power battery is connected between the range extender and the power-consuming component. Both the range extender and the power battery are configured to output DC power, and the output voltage of the range extender is configured to be higher than the bus voltage of the power battery.

2. The bridge erecting machine according to claim 1, characterized in that, The power battery has a first port, a second port, and a third port, and the power-consuming components include a first power-consuming component and a second power-consuming component; The first port is connected to the range extender, the second port is connected to the first power-consuming component, and the third port is connected to the second power-consuming component.

3. The bridge erecting machine according to claim 2, characterized in that, The power module is also provided with a charging interface, and the power battery is provided with a fourth port. The charging interface is connected to the fourth port, so that the power battery is configured to be electrically connected to an external power source.

4. The bridge erecting machine according to claim 2, characterized in that, Also includes: A DC bus, which is connected between the second port and the first power-consuming component.

5. The bridge erecting machine according to claim 4, characterized in that, The first electrical component includes a first motor, a second motor, a third motor, and a fourth motor; The frame body includes a main beam, a crane trolley, and outrigger assemblies. The crane trolley is equipped with a lifting device. The first motor is configured to drive the lifting device to rise, and the first motor is also driven to generate electricity during the descent of the lifting device. The second motor is configured to drive the crane trolley to move relative to the main beam. The third motor is configured to drive the corresponding outrigger in the outrigger assembly to move relative to the main beam. It also includes a hydraulic system, which includes an oil pump unit, and the fourth motor is configured to drive the oil pump unit to operate in order to drive the outriggers to rise and fall via the hydraulic system.

6. The bridge erecting machine according to claim 5, characterized in that, The power module also includes a frequency converter cabinet, which is equipped with a first frequency converter, a second frequency converter and a third frequency converter; One end of the first frequency converter is connected to the DC bus, and the other end of the first frequency converter is connected in parallel to the first motor and the second motor; One end of the second frequency converter is connected to the DC bus, and the other end of the second frequency converter is connected to the third motor; One end of the third frequency converter is connected to the DC bus, and the other end of the third frequency converter is connected to the fourth motor.

7. The bridge erecting machine according to claim 5, characterized in that, Also includes: A transmission is connected between the first motor and the lifting device, and the transmission is configured to increase the speed of the first motor.

8. The bridge erecting machine according to claim 4, characterized in that, The power module also includes an auxiliary power cabinet, which is equipped with an inverter, a first pre-charge circuit, a second pre-charge circuit and a third pre-charge circuit; The inverter is connected between the third port and the second power-consuming component, and the first pre-charge circuit is also connected between the inverter and the third port; The second precharge circuit is connected between the range extender and the first port; The third precharge circuit is connected between the second port and the DC bus.

9. The bridge erecting machine according to claim 8, characterized in that, The second electrical component includes a lighting system and / or an air conditioning system and / or a control system.

10. The bridge erecting machine according to any one of claims 1 to 9, characterized in that, Also includes: The mounting platform is assembled on the rack body and is used to support the power module and the power-consuming components.

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