A multi-functional crown block and a method of using the same

Abstract

The present application relates to a kind of multifunctional crown block and its using method, multifunctional crown block includes basic crown block, and first modification device and second modification device are respectively arranged at the two ends of horizontal main beam of basic crown block.First and second modification device can be rotated relative to basic crown block, so that first and second modification device are switched between open state and closed state.When first and second modification device are in closed state, first modification device, second modification device and horizontal main beam enclose bridge below horizontal main beam.The present application combines crown block with modification trolley, so that crown block has bridge modification function in addition to hoisting and lifting, modification trolley does not need to be additionally arranged to carry out modification work, two different functions are realized by crown block, can improve the efficiency of modification work, simplify equipment structure, save manpower and material resources.In addition, modification device can also move along with crown block along the direction of bridge extension synchronously, quickly across any pier.

Description

Technical Field

[0001] This invention belongs to the field of bridge construction technology, specifically relating to a multi-functional overhead crane and its usage method. Background Technology

[0002] During bridge construction, to achieve a more aesthetically pleasing appearance, finishing work is required on areas outside the bridge surface after installation. This finishing work includes grinding and cleaning the concrete surface. Specifically, this involves cleaning various dirt and oil stains from areas outside the bridge surface; using an electric grinder to grind and clean blackened or moldy areas on the concrete surface; cutting off the ends of reinforcing bars with a grinding wheel and then grinding the reinforcing bars; cleaning dust and oil stains from the base layer; sprinkling water to moisten the base layer; grinding it smooth after drying; and treating concrete joints: using a grinder to smooth smaller joints, eliminating protruding edges. To achieve this bridge finishing work, an additional finishing trolley is required. After finishing one span of the bridge, due to the limitations of the bridge piers, the construction workers cannot directly move the finishing trolley to the next adjacent span. Instead, the finishing trolley must be disassembled and transported as a whole to the next span for reinstallation before continuing the finishing work. The frequent disassembly and installation of the aforementioned trimming trolley will affect the efficiency of the trimming work and require a lot of human resources. Therefore, a trimming device with a lower frequency of disassembly and installation is needed to improve trimming efficiency.

[0003] Overhead cranes, also known as bridge cranes or gantry cranes, are the most widely used type of lifting machinery. In modern large-scale production, with the continuous improvement of mechanization and automation, overhead cranes no longer simply play an auxiliary role in the production process but have become specialized equipment in continuous production processes. Overhead cranes are mounted horizontally above fixed spans in workshops, warehouses, and open-air storage areas, serving as cranes for lifting objects and performing certain special processes. Overhead cranes are characterized by their simple structure, ease of operation, ability to lift objects at any position within the limits of the lifting mechanism's maximum height and the space allowed by the trolley and overhead rails, convenient maintenance, large lifting capacity, and minimal ground space requirements. They not only reduce the physical labor of workers but also improve production efficiency, thus enabling their widespread use in industrial production.

[0004] No combination of bridge modification trolley and overhead crane has been found in the existing technology. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the problem that existing bridge modification trolleys require separate configuration and frequent disassembly and installation, this invention provides a multi-functional overhead crane and its usage method.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0009] In a first aspect, the present invention provides a multifunctional overhead crane, including a basic overhead crane and a first decorative device and a second decorative device respectively disposed at both ends of the horizontal main beam of the basic overhead crane.

[0010] The first and second trimming devices are rotatable relative to the basic crane, allowing the first and second trimming devices to switch between an open state and a closed state.

[0011] When the first and second decorative devices are in the closed state, the first decorative device, the second decorative device, and the horizontal main beam can enclose the bridge below the horizontal main beam.

[0012] This invention effectively solves the problem of beam bottom finishing in existing bridge erecting machines or trenching machines. It integrates a finishing trolley function into the existing overhead crane, replacing the traditional mobile formwork or the full-span finishing trolley of the trenching machine, thus reducing the equipment's weight and optimizing its design. The overhead crane of this invention can be used in trenching machines, giving them lifting capabilities. It allows the finishing device to pass unimpeded across bridge piers and reach any bridge span for finishing or adjusting the outer formwork. Furthermore, this invention can also be used in segmental assembly bridge erecting machines for the appearance treatment of wet joints, achieving a finishing function; or in traditional double-beam mobile formwork, enabling it to perform lifting and beam bottom finishing functions; or in bridge erecting machines for ordinary box girder sections, high-speed rail bridge erecting machines, and other bridge equipment requiring beam bottom finishing. Its wide range of applications and promising future prospects make it a valuable tool.

[0013] In the multi-functional overhead crane described above, preferably, the first trimming device and the second trimming device are respectively hinged to the horizontal main beam; when the first trimming device and the second trimming device are in the closed state, the first trimming device and the second trimming device are respectively locked to the horizontal main beam.

[0014] This invention adjusts the connection between the first and second finishing devices and the horizontal main beam in different ways, so that the first and second finishing devices are in different states, thereby enabling the same overhead crane to have both hoisting and finishing functions, which is equivalent to both an overhead crane and a finishing trolley.

[0015] In the multi-functional overhead crane described above, preferably, the first trimming device and the second trimming device are respectively connected to the horizontal main beam via telescopic actuators;

[0016] The telescopic driver drives the first and second trimming devices to rotate relative to the horizontal main beam by telescopic movement, thereby putting the first and second trimming devices into an open or closed state.

[0017] In this invention, the telescopic actuator is used to adjust the angle between the first and second trimming devices and the horizontal main beam, so that the first and second trimming devices are at different opening degrees.

[0018] In the multi-functional overhead crane described above, preferably, the telescopic actuator is an opening and closing hydraulic cylinder.

[0019] In the multi-functional overhead crane described above, preferably, the first trimming device is detachably hinged to the horizontal main beam via a first hinge and a second hinge.

[0020] The second decorative device is detachably hinged to the horizontal main beam via a third hinge and a fourth hinge;

[0021] With the direction of the horizontal main beam away from the bridge as the outer side, the first hinge is located outside the second hinge, and the third hinge is located outside the fourth hinge;

[0022] When the first hinge and the second hinge simultaneously achieve the hinge connection between the first decorative device and the horizontal main beam, and the third hinge and the fourth hinge simultaneously achieve the hinge connection between the second decorative device and the horizontal main beam, the first decorative device and the second decorative device are in the closed state.

[0023] When only one of the first hinge or the second hinge is hinged to the first decorative device and the horizontal main beam, the first decorative device can be in the open state under the action of the telescopic actuator; when only one of the third hinge or the fourth hinge is hinged to the second decorative device and the horizontal main beam, the second decorative device can be in the open state under the action of the telescopic actuator.

[0024] This invention adjusts the open and closed states of the first and second decorative devices by installing one or both of the aforementioned first and second hinges on the first and second decorative devices, in conjunction with an opening and closing hydraulic cylinder. When both the first and second hinges are simultaneously installed on the first and second decorative devices, the devices cannot rotate relative to the horizontal truss due to the multiple hinges. This invention achieves a fixed connection between the first and second decorative devices and the horizontal main beam by using multiple hinges. When both the first and second hinges are simultaneously installed on the first and second decorative devices, the devices are fixed relative to the horizontal main beam and are in a closed state. However, when only one of the first or second hinges is installed on the first and second decorative devices, the devices are hinged to the horizontal main beam and can rotate relative to it, thus opening under the action of the telescopic actuator.

[0025] As described above, the multi-functional overhead crane preferably includes a first fixing seat and a first pin respectively disposed on the horizontal main beam and the first decorative device; the first pin passes through the first fixing seat disposed on the horizontal main beam and the first decorative device.

[0026] The second hinge includes a second fixing seat respectively disposed on the horizontal main beam and the first decorative device, and a second pin; the second pin passes through the second fixing seat disposed on the horizontal main beam and the first decorative device;

[0027] The third hinge includes a third fixing seat respectively disposed on the horizontal main beam and the second decorative device, and a third pin; the third pin passes through the third fixing seat disposed on the horizontal main beam and the second decorative device.

[0028] The fourth hinge includes a fourth fixing seat respectively disposed on the horizontal main beam and the second decorative device, and a fourth pin; the fourth pin passes through the fourth fixing seat disposed on the horizontal main beam and the second decorative device.

[0029] When the first pin is separated from the first fixed seat, or when the second pin is separated from the second fixed seat, the first trimming device can be in the open state under the action of the telescopic driver; when the third pin is separated from the third fixed seat, or when the fourth pin is separated from the fourth fixed seat, the second trimming device can be in the open state under the action of the telescopic driver.

[0030] In the multi-functional overhead crane described above, preferably, the first and second decorative devices are trusses.

[0031] Preferably, the multi-functional overhead crane described above includes ladders, stairs, platforms, and guardrails within the truss.

[0032] In the multi-functional overhead crane described above, preferably, the bottoms of the first trimming device and the second trimming device are detachably connected via a connecting assembly.

[0033] As described above, the multi-functional overhead crane preferably includes a first flange and a second flange respectively disposed at the bottom of the first trimming device and the second trimming device.

[0034] The multi-functional overhead crane described above, preferably, includes a horizontal main beam, a group of legs symmetrically arranged on the lower side of the horizontal main beam, a traveling mechanism disposed at the bottom of the legs for driving the basic crane to move along the bridge, and a lifting assembly capable of moving relative to the horizontal main beam.

[0035] The outrigger is perpendicular to the horizontal main beam.

[0036] In the multi-functional overhead crane described above, preferably, the horizontal main beam is a horizontal truss, the lifting assembly is an electric hoist, a lifting assembly track is provided below the horizontal truss, the lifting assembly track is parallel to the horizontal truss, and the electric hoist can move along the lifting assembly track.

[0037] Preferably, the multi-functional overhead crane described above is further provided with an anti-tipping structure on the traveling mechanism to prevent the basic overhead crane from tipping over.

[0038] Anti-tipping structures are used to prevent the overhead crane from tipping over when the weight of materials or structures being lifted by the lifting components is too great, thus avoiding safety accidents. Specifically, an anti-tipping structure may be an anti-tipping hook, with its cantilever hook positioned below the flange of the overhead crane track beam, leaving a small gap in between. When the overhead crane tends to tip over, the lower part of the anti-tipping hook contacts the upper flange of the track beam, creating resistance and preventing the overhead crane from detaching from the track beam.

[0039] Preferably, the basic crane further includes a support structure, which is fixedly mounted on the legs and perpendicular to the legs.

[0040] Secondly, the present invention also provides a method for using the above-mentioned multifunctional overhead crane, comprising the following steps:

[0041] S1: Adjust the first and second trimming devices to the open position, and the overhead crane will lift the bridge.

[0042] S2: After the hoisting of a certain area of ​​the bridge is completed, adjust the first and second finishing devices to the closed state;

[0043] S3: The bridge is modified using the first and second modification devices;

[0044] S4: Adjust the first and second finishing devices to the open state. The gantry crane drives the first and second finishing devices to move along the bridge. Then repeat steps S1-S3 until the lifting and finishing of the bridge is completed.

[0045] (III) Beneficial Effects

[0046] The beneficial effects of this invention are:

[0047] This invention places the finishing devices at both ends of the horizontal main beam of the overhead crane. These devices can rotate relative to the horizontal main beam and switch between open and closed states. When the finishing devices are closed, they and the horizontal main beam enclose the bridge, allowing the operator to directly move onto the devices for comprehensive finishing work. The overhead crane of this invention can close the finishing devices after lifting operations are completed, enabling rapid finishing work on the corresponding bridge sections. Because the overhead crane itself can move relatively freely along the bridge, the finishing devices in this invention can move synchronously with the crane along the bridge's extension direction, allowing them to quickly cross any pier without being restricted by it, eliminating the need for complex disassembly and installation, thus saving working time, manpower, and resources.

[0048] Therefore, this invention combines an overhead crane with a finishing trolley, so that the overhead crane can not only lift and transport but also perform bridge finishing functions at the same time. There is no need to set up a separate finishing trolley for finishing work. By using the overhead crane to achieve two different functions, the efficiency of finishing work can be improved, the equipment structure can be simplified, and manpower and material resources can be saved.

[0049] The multi-functional overhead crane of this invention has a wide range of applications and promising prospects. It can be used in trenching machines to enable them to perform lifting operations; it can also be used in segmental bridge erection machines for the surface treatment of wet joints, providing a finishing function; and it can be used in traditional double-beam moving formwork to enable lifting and beam bottom finishing functions. Furthermore, the multi-functional overhead crane of this invention can also be used in bridge erection machines for ordinary box girder sections, high-speed railway bridge erection machines, and other bridge equipment requiring beam bottom finishing. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the overall structure of the multi-functional overhead crane in the closed state in this invention;

[0051] Figure 2 This is a schematic diagram of the overall structure of the multi-functional overhead crane in the open state in this invention;

[0052] Figure 3 This is a three-dimensional schematic diagram of the multi-functional overhead crane in this invention;

[0053] Figure 4 This is a schematic diagram of the state of the multi-functional overhead crane used in the trenching machine in this invention (the first and second modification devices are in the off state).

[0054] Figure 5 This is a schematic diagram of the state of the multi-functional overhead crane in this invention after it is used by the trenching machine and crosses a bridge pier;

[0055] Figure 6 This is a schematic diagram showing the state of the multi-functional overhead crane used in the trenching machine and for modifying the bridge in this invention.

[0056] Explanation of reference numerals in the attached figures:

[0057] 1: First finishing device; 2: Second finishing device; 3: Horizontal main beam; 4: Telescopic actuator; 5: First hinge; 6: Second hinge; 7: Connecting assembly; 8: Outrigger; 9: Traveling mechanism; 10: Lifting assembly; 11: Lifting assembly rail; 12: Anti-overturning structure; 13: Support structure; 14: Crossbar; 15: Fixing plate; 16: Aqueduct; 17: Pier; 18: Outer formwork; 19: Third hinge; 20: Fourth hinge. Detailed Implementation

[0058] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0059] Example 1

[0060] like Figure 1-6 As shown, this embodiment provides a multi-functional overhead crane, including a basic overhead crane and a first finishing device 1 and a second finishing device 2 respectively disposed at both ends of the horizontal main beam 3 of the basic overhead crane. The first finishing device 1 and the second finishing device 2 are rotatable relative to the basic overhead crane, allowing them to switch between an open state and a closed state. When the first finishing device 1 and the second finishing device 2 are in the closed state, the first finishing device 1, the second finishing device 2, and the horizontal main beam 3 can enclose the bridge located below the horizontal main beam 3, allowing the operator to stand on the first finishing device 1 and the second finishing device 2 to perform finishing work. When the first finishing device 1 and the second finishing device 2 are in the open state, the overhead crane only performs hoisting work.

[0061] In this embodiment, the first and second finishing devices are positioned at both ends of the horizontal main beam. The two sets of finishing devices can switch between open and closed states by rotating relative to the horizontal main beam. When the finishing devices are closed, they and the horizontal main beam enclose the bridge, allowing the operator to directly move onto the finishing devices to perform comprehensive finishing work. The overhead crane in this embodiment can close the finishing devices after completing the hoisting work, enabling rapid finishing work on the corresponding bridge sections after the hoisting is finished. Because the overhead crane itself can move freely along the bridge, the first and second finishing devices in this embodiment can move synchronously with the crane along the bridge's extension direction, thus allowing them to quickly cross any pier without being restricted by it. Therefore, this embodiment eliminates the need for complex and frequent manual disassembly and installation of the finishing devices, saving working time, manpower, and resources. Overall, this embodiment combines the overhead crane with the finishing trolley, concentrating both the lifting and bridge finishing functions on the overhead crane. By using the same overhead crane, two different construction processes, lifting and bridge finishing, can be carried out simultaneously, eliminating the need for a separate finishing trolley. This improves the efficiency of finishing work, simplifies the equipment structure, and saves manpower and resources.

[0062] In this embodiment, when the first trimming device 1 and the second trimming device 2 are in the open state, they can rotate relative to the horizontal main beam 3. In this state, the overhead crane performs hoisting work, and the entire overhead crane functions as a crane. When the first trimming device 1 and the second trimming device 2 are in the closed state, they are locked to the horizontal main beam 3 to stabilize the entire overhead crane and prevent them from swaying relative to the horizontal main beam, which could pose a safety hazard to the workers performing the trimming work. In this state, the overhead crane performs trimming work, and the entire overhead crane functions as a trimming trolley. Therefore, this embodiment achieves different functions by adjusting the connection between the trimming devices and the horizontal main beam, allowing the first and second trimming devices to be in different states.

[0063] Specifically, the first decorative device 1 and the second decorative device 2 are connected to the horizontal main beam 3 via a telescopic actuator 4. In this embodiment, the telescopic actuator 4 adjusts the angle between the first decorative device 1 and the second decorative device 2 and the horizontal main beam 3, allowing the first decorative device 1 and the second decorative device 2 to be at different opening degrees. In actual operation, the opening degree of the first decorative device 1 and the second decorative device 2 can be adjusted as needed to maintain the distance between the first decorative device 1 and the second decorative device 2 and the bridge within a suitable range. Furthermore, it should be noted that although the first decorative device 1 and the second decorative device 2 have identical structures and are symmetrically arranged at both ends of the horizontal main beam 3, the telescopic actuator 4 can adjust the first decorative device 1 and the second decorative device 2 to the same or different opening degrees, as long as a suitable distance is maintained from the bridge.

[0064] Specifically, the telescopic driver 4 can drive the first trimming device 1 and the second trimming device 2 to rotate relative to the horizontal main beam 3 by telescopic movement, thereby putting the first trimming device 1 and the second trimming device 2 into an open or closed state.

[0065] In this embodiment, the first finishing device 1 and the second finishing device 2 are preferably rectangular trusses, characterized by a rectangular cross-section. The function of the first finishing device 1 and the second finishing device 2 is to provide the operator with a standing position for finishing work. The outer contour of the rectangular truss is designed according to the outer contour of the bridge. Figure 1-3 It follows the design of an arc-shaped aqueduct, but is not limited to it. Figure 1-3 The shape shown can also be adjusted according to other beam shapes. Preferably, the interior of the truss can be equipped with ladders, stairs, platforms, railings, and other facilities to facilitate access and operation for the operator, depending on the orientation and tilt angle of the rectangular truss.

[0066] It should be noted that operators are only permitted to enter and perform bridge finishing work after the two sets of rectangular trusses of the first and second finishing devices are closed and stable, and the bottom ends of the two sets of rectangular trusses are fixed by the connecting assembly 7. Specifically, the connecting assembly 7 includes a first flange and a second flange respectively disposed at the bottom of the rectangular truss of the first finishing device 1 and the bottom of the rectangular truss of the second finishing device 2. The bottoms of the first finishing device 1 and the second finishing device 2 can be detachably connected by the first flange, the second flange, and high-strength bolts.

[0067] In this embodiment, the horizontal main beam 3 is preferably a horizontal truss, which is also a rectangular truss. Preferably, in this embodiment, the telescopic actuator 4 is an opening and closing hydraulic cylinder. Figure 1-3As shown, the opening and closing hydraulic cylinder is obliquely positioned, meaning it forms an angle with both the cylinder and the upper ends of the horizontal and rectangular trusses. Specifically, the line containing the cylinder, the horizontal truss, and the upper end of the rectangular truss forms a triangle. This opening and closing hydraulic cylinder enables the rectangular truss to perform the required opening and closing movements relative to the horizontal truss under different construction needs. Furthermore, the cylinder barrel is connected to the horizontal truss via lugs and connecting pins, and the telescopic ends of the cylinder are connected to two sets of rectangular trusses via lugs and connecting pins respectively.

[0068] like Figure 1-2 As shown, in this embodiment, the first decorative device 1 is detachably hinged to the horizontal main beam 3 via a first hinge 5 and a second hinge 6, and the second decorative device 2 is detachably hinged to the horizontal main beam 3 via a third hinge 19 and a fourth hinge 20. Taking the direction of the horizontal truss away from the bridge as the outer side, the first hinge 5 is located outside the second hinge 6, and the third hinge 19 is located outside the fourth hinge 20. Since the horizontal truss is horizontally arranged and parallel to the bridge surface, the first hinge 5, second hinge 6, third hinge 19, and fourth hinge 20 are all at the same height, differing only in their different positions on the horizontal truss and their connection to either the first or second decorative device.

[0069] This embodiment enables the adjustment of the open and closed states of the first decorative device 1 by installing one or both of the first hinge 5 and the second hinge 6 on the first decorative device 1 and cooperating with the opening and closing cylinder. Similarly, this embodiment enables the adjustment of the open and closed states of the second decorative device 2 by installing one or both of the third hinge 19 and the fourth hinge 20 on the second decorative device 2 and cooperating with the opening and closing cylinder. Specifically, when the first hinge 5 and the second hinge 6 are simultaneously installed on the first decorative device 1, the first decorative device 1 cannot rotate relative to the horizontal truss due to the multiple hinges. When the third hinge 19 and the fourth hinge 20 are simultaneously installed on the second decorative device 2, the second decorative device 2 cannot rotate relative to the horizontal truss due to the two hinges. This embodiment achieves locking of the first decorative device 1 and the second decorative device 2 to the horizontal truss by setting two hinges.

[0070] When the first hinge 5 and the second hinge 6 simultaneously connect the first decorative device 1 to the horizontal main beam 3, and the third hinge 19 and the fourth hinge 20 simultaneously connect the second decorative device 2 to the horizontal main beam 3, the first decorative device 1 and the second decorative device 2 are in the closed state. Specifically, when the first hinge 5 and the second hinge 6 are both located on the first decorative device 1, the first decorative device 1 is in the closed state; similarly, when the third hinge 19 and the fourth hinge 20 are both located on the first decorative device 1, the second decorative device 2 is in the closed state.

[0071] When only one of the first hinge 5 or the second hinge 6 is used to hinge the first decorative device 1 to the horizontal main beam 3, the first decorative device 1 can be in the open state under the action of the telescopic actuator 4. When only one of the third hinge 19 or the fourth hinge 20 is used to hinge the second decorative device 2 to the horizontal main beam 3, the second decorative device 2 can be in the open state under the action of the telescopic actuator 4. Specifically, when only one of the first hinge 5 or the second hinge 6 is located on the first decorative device 1, the first decorative device 1 and the horizontal truss are connected by a hinge that allows relative rotation, and the first decorative device 1 can move relative to the horizontal truss, thus being in the open state under the action of the telescopic actuator 4. Similarly, when only one of the third hinge 19 or the fourth hinge 20 is located on the second decorative device 2, the second decorative device 2 and the horizontal truss are connected by a hinge that allows relative rotation, and the second decorative device 2 can move relative to the horizontal truss, thus being in the open state under the action of the telescopic actuator 4.

[0072] The aforementioned first hinge 5, second hinge 6, third hinge 19, and fourth hinge 20 can be removed or installed. In actual construction, depending on the working conditions, simultaneously installing the first hinge 5 and the second hinge 6 will keep the first decorative device 1 in the closed state, while simultaneously installing the third hinge 19 and the fourth hinge 20 will keep the second decorative device 2 in the closed state. When one of the first hinge 5 or the second hinge 6 is removed, the first decorative device 1 can move relative to the horizontal truss, thus opening the first decorative device 1. Similarly, when one of the third hinge 19 or the fourth hinge 20 is removed, the second decorative device 2 can move relative to the horizontal truss, thus opening the second decorative device 2.

[0073] Preferably, the first hinge 5 includes a first fixing seat respectively disposed on the horizontal main beam 3 and the first decorative device 1, and also includes a first pin. The first pin passes through the first fixing seat disposed on the horizontal main beam 3 and the first decorative device 1, and is detachably connected to the first fixing seat. Similarly, the second hinge 6 includes a second fixing seat respectively disposed on the horizontal main beam 3 and the first decorative device 1, and also includes a second pin. The second pin passes through the second fixing seat disposed on the horizontal main beam 3 and the first decorative device 1, and is detachably connected to the second fixing seat.

[0074] The third hinge 19 includes a third fixed seat and a third pin respectively disposed on the horizontal main beam 3 and the second decorative device 2. The third pin passes through the third fixed seat disposed on the horizontal main beam 3 and the second decorative device 2. The fourth hinge 20 includes a fourth fixed seat and a fourth pin respectively disposed on the horizontal main beam 3 and the second decorative device 2. The fourth pin passes through the fourth fixed seat disposed on the horizontal main beam 3 and the second decorative device 2. When the first pin is separated from the first fixed seat, or when the second pin is separated from the second fixed seat, the first decorative device 1 can be in the open state under the action of the telescopic actuator 4. When the third pin is separated from the third fixed seat, or when the fourth pin is separated from the fourth fixed seat, the second decorative device 2 can be in the open state under the action of the telescopic actuator 4.

[0075] The separation of the first pin from the first fixed seat, the second pin from the second fixed seat, the third pin from the third fixed seat, and the fourth pin from the fourth fixed seat specifically refers to manually pulling one of the first, second, third, or fourth pins out of its corresponding fixed seat. When the first pin is inserted into the first fixed seat and the second pin is inserted into the second fixed seat, the first finishing device 1 is in the closed state. When the third pin is inserted into the third fixed seat and the fourth pin is inserted into the fourth fixed seat, the second finishing device 2 is in the closed state. Similarly, when the first pin is inserted into the first fixed seat and the second pin into the second fixed seat, manual insertion of the pin into its corresponding fixed seat is also required. To reduce the need for pin insertion and removal, in actual construction, usually only one of the first or second pins, or one of the third or fourth pins, is repeatedly inserted or removed, while the other remains fixed in its corresponding fixed seat.

[0076] In this embodiment, the basic gantry crane includes, in addition to the horizontal main beam 3, groups of symmetrically arranged support legs 8 on the lower side of the horizontal main beam 3, a traveling mechanism 9 located at the bottom of the support legs 8 for moving the basic gantry crane along the bridge, and a lifting assembly 10 capable of moving relative to the horizontal main beam 3. The traveling mechanism 9 is also equipped with an anti-tipping structure 12 to prevent the basic gantry crane from tipping over. The support legs 8 are perpendicular to the horizontal main beam 3, forming a portal frame structure with the horizontal main beam 3. The traveling mechanism 9 provides power for the entire gantry crane to move along the bridge. The lifting assembly 10 is the main operating module for hoisting and transporting the required materials. The anti-tipping structure 12 is located on the traveling mechanism 9 to prevent the gantry crane from tipping over when the weight of the materials or structures hoisted by the lifting assembly is too large, thus avoiding safety accidents. Specifically, the anti-tipping structure can be an anti-tipping hook, with its cantilever hook positioned below the flange of the gantry crane track beam, leaving a small gap in the middle. When the gantry crane tends to tip over, the lower part of the anti-tipping hook contacts the upper flange of the track beam to form resistance, preventing the gantry crane from detaching from the gantry crane track beam. The aforementioned lifting assembly 10 includes, but is not limited to, an electric hoist, and can also be any other lifting equipment. A lifting assembly track 11 is provided below the horizontal truss. In this embodiment, the lifting assembly track 11 is an I-beam, and the lifting assembly track 11 is parallel to the horizontal truss, allowing the electric hoist to move along the lifting assembly track 11.

[0077] In this embodiment, the basic overhead crane is also equipped with a support structure 13, which is fixedly mounted on the support leg 8 and perpendicular to it. Specifically, the support structure 13 is a short steel beam welded to the support leg 8, which provides lateral support to the rectangular truss, increasing the stability of the rectangular truss during crane movement. Preferably, as... Figure 3 As shown, there are four sets of outriggers 8, arranged in pairs. Several crossbeams 14 are welded between each pair of outriggers to further increase the rigidity and stability of the basic crane. These crossbeams 14 are the same as the support structure, being short steel beams welded to the outriggers 8. Furthermore, in this embodiment, a fixing plate 15 is welded near the bottom between each pair of outriggers, and the support structure 13 is specifically welded to the fixing plate 15.

[0078] This embodiment effectively solves the problem of beam bottom finishing in existing bridge erecting machines or trenching machines. It integrates a finishing trolley function into the overhead crane, replacing the traditional moving formwork or the full-span finishing trolley of the trenching machine, thus reducing the equipment's weight and optimizing its design. For example... Figure 4-6As shown, this embodiment can be used with a trenching machine. The finishing device surrounds the outside of the aqueduct 16, enabling the trenching machine to have a hoisting function. The overhead crane allows the openable finishing device to pass unimpeded through the pier 17, reaching any bridge span position for finishing or adjusting the outer formwork 18. This embodiment can also be used with a segmental assembly bridge erecting machine for the appearance treatment of wet joints, achieving a finishing function. This embodiment can also be used with a traditional double-beam moving formwork, enabling it to have hoisting and beam bottom finishing functions. In addition, this embodiment can be used with bridge erecting machines for ordinary box girder sections, high-speed rail bridge erecting machines, and other bridge equipment that requires beam bottom finishing.

[0079] Example 2

[0080] This embodiment provides a method for using the multi-functional overhead crane of Embodiment 1, including the following steps:

[0081] S1: Pull out one of the first pins or the second pins from its corresponding fixed seat, and at the same time pull out the third pin or the fourth pin from its corresponding fixed seat. Push the first trimming device and the second trimming device through the hydraulic cylinder, so that the first trimming device 1 and the second trimming device 2 are adjusted to the open state, and the crane basically lifts the bridge.

[0082] S2: After the hoisting work in a certain area of ​​the bridge is completed, the extension end of the hydraulic cylinder is retracted to its shortest length, and the first trimming device 1 and the second trimming device 2 gradually close. After the first trimming device 1 and the second trimming device 2 are stabilized as a whole, the pins pulled out in step S1 are installed back into the original fixed seats, and then the first flange and the second flange are fixedly connected by high-strength bolts, so that the first trimming device 1 and the second trimming device 2 are adjusted to the closed state.

[0083] S3: The operator passes through different positions of the first modification device 1 and the second modification device 2 in sequence to modify the bridge.

[0084] S4: After the modification in step S3 is completed, remove the high-strength bolts, then pull out one of the first or second pins from its corresponding fixed seat, and at the same time pull out the third or fourth pin from its corresponding fixed seat. Finally, start the opening and closing cylinder to adjust the first modification device 1 and the second modification device 2 to the open state. The crane basically drives the first modification device 1 and the second modification device 2 to move along the bridge, cross a certain pier, and stop moving. Repeat steps S1-S3 until the lifting and modification of the bridge is completed.

[0085] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0086] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0087] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0088] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0089] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A multi-functional overhead crane, characterized in that, It includes a basic crane, and a first decorative device (1) and a second decorative device (2) respectively disposed at both ends of the horizontal main beam (3) of the basic crane; The first trimming device (1) and the second trimming device (2) are rotatable relative to the basic crane, so that the first trimming device (1) and the second trimming device (2) switch between an open state and a closed state; When the first trimming device (1) and the second trimming device (2) are in the closed state, the first trimming device (1), the second trimming device (2) and the horizontal main beam (3) can enclose the bridge below the horizontal main beam (3) for a period of time; The basic gantry crane includes a horizontal main beam (3), a group of legs (8) arranged symmetrically on the lower side of the horizontal main beam (3), a traveling mechanism (9) arranged at the bottom of the legs (8) for driving the basic gantry crane to move along the bridge, and a lifting assembly (10) that can move relative to the horizontal main beam (3). The outrigger (8) is perpendicular to the horizontal main beam (3); The horizontal main beam (3) is a horizontal truss, the lifting assembly (10) is an electric hoist, and a lifting assembly track (11) is provided below the horizontal truss. The lifting assembly track (11) is parallel to the horizontal truss, and the electric hoist can move along the lifting assembly track (11). The traveling mechanism (9) is also provided with an anti-overturning structure (12) to prevent the basic crane from tipping over. The basic overhead crane also includes a support structure (13), which is fixedly mounted on the outrigger (8) and perpendicular to the outrigger (8).

2. The multi-functional overhead crane according to claim 1, characterized in that, The first trimming device (1) and the second trimming device (2) are respectively hinged to the horizontal main beam (3); when the first trimming device (1) and the second trimming device (2) are in the closed state, the first trimming device (1) and the second trimming device (2) are respectively locked to the horizontal main beam (3).

3. The multi-functional overhead crane according to claim 1, characterized in that, The first trimming device (1) and the second trimming device (2) are respectively connected to the horizontal main beam (3) via a telescopic actuator (4); The telescopic driver (4) drives the first trimming device (1) and the second trimming device (2) to rotate relative to the horizontal main beam (3) by telescopic movement, thereby putting the first trimming device (1) and the second trimming device (2) into an open or closed state.

4. The multi-functional overhead crane according to claim 3, characterized in that, The telescopic actuator (4) is an opening and closing hydraulic cylinder.

5. The multi-functional overhead crane according to claim 3, characterized in that, The first decorative device (1) is detachably hinged to the horizontal main beam (3) via a first hinge (5) and a second hinge (6); The second decorative device (2) is detachably hinged to the horizontal main beam (3) via a third hinge (19) and a fourth hinge (20); With the direction of the horizontal main beam (3) away from the bridge as the outer side, the first hinge (5) is located outside the second hinge (6), and the third hinge (19) is located outside the fourth hinge (20). When the first hinge (5) and the second hinge (6) simultaneously achieve the hinge connection between the first decorative device (1) and the horizontal main beam (3), and the third hinge (19) and the fourth hinge (20) simultaneously achieve the hinge connection between the second decorative device (2) and the horizontal main beam (3), the first decorative device (1) and the second decorative device (2) are in the closed state. When only one of the first hinge (5) or the second hinge (6) is hinged to the first decorative device (1) and the horizontal main beam (3), the first decorative device (1) can be in the open state under the action of the telescopic actuator (4); when only one of the third hinge (19) or the fourth hinge (20) is hinged to the second decorative device (2) and the horizontal main beam (3), the second decorative device (2) can be in the open state under the action of the telescopic actuator (4).

6. The multi-functional overhead crane according to claim 5, characterized in that, The first hinge (5) includes a first fixing seat and a first pin respectively disposed on the horizontal main beam (3) and the first decorative device (1); the first pin passes through the first fixing seat disposed on the horizontal main beam (3) and the first decorative device (1); The second hinge (6) includes a second fixing seat respectively disposed on the horizontal main beam (3) and the first decorative device (1), and a second pin; the second pin passes through the second fixing seat disposed on the horizontal main beam (3) and the first decorative device (1); The third hinge (19) includes a third fixing seat and a third pin respectively disposed on the horizontal main beam (3) and the second decorative device (2); the third pin passes through the third fixing seat disposed on the horizontal main beam (3) and the second decorative device (2); The fourth hinge (20) includes a fourth fixing seat and a fourth pin respectively disposed on the horizontal main beam (3) and the second decorative device (2); the fourth pin passes through the fourth fixing seat disposed on the horizontal main beam (3) and the second decorative device (2); When the first pin is separated from the first fixed seat, or when the second pin is separated from the second fixed seat, the first trimming device (1) can be in the open state under the action of the telescopic driver (4); when the third pin is separated from the third fixed seat, or when the fourth pin is separated from the fourth fixed seat, the second trimming device (2) can be in the open state under the action of the telescopic driver (4).

7. The multi-functional overhead crane according to claim 1, characterized in that, The first decorative device (1) and the second decorative device (2) are trusses.

8. The multi-functional overhead crane according to claim 7, characterized in that, The truss is equipped with ladders, stairs, platforms, and guardrails.

9. The multi-functional overhead crane according to claim 1, characterized in that, The bottoms of the first trimming device (1) and the second trimming device (2) are detachably connected by a connecting component (7).

10. The multi-functional overhead crane according to claim 9, characterized in that, The connecting assembly (7) includes a first flange and a second flange respectively disposed at the bottom of the first trimming device (1) and the second trimming device (2).

11. A method of using the multi-functional overhead crane according to any one of claims 1-10, characterized in that, Includes the following steps: S1: Adjust the first trimming device (1) and the second trimming device (2) to the open state, and the basic overhead crane lifts the bridge; S2: After the hoisting of a certain area of ​​the bridge is completed, adjust the first trimming device (1) and the second trimming device (2) to the closed state; S3: The bridge is modified by the first modification device (1) and the second modification device (2); S4: Adjust the first trimming device (1) and the second trimming device (2) to the open state. The basic crane drives the first trimming device (1) and the second trimming device (2) to move along the bridge. Then repeat steps S1-S3 until the lifting and trimming of the bridge is completed.

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