Double-girder bridge crane

Abstract

The invention relates to the technical field of cranes, in particular to a double-girder bridge crane which comprises two fixed top beams, moving blocks are arranged on the upper end faces of the two fixed top beams in a sliding mode and move above the fixed top beams through a controller, two crane girders are installed on the side walls of the moving blocks, and the two crane girders are arranged on the upper end faces of the two crane girders. A rectangular plate is jointly installed on the upper end faces of the crane girders, a lifting seat is installed at the bottom of the rectangular plate, a hook is arranged at the bottom of the lifting seat, guide rails are fixedly installed on the upper end faces of the crane girders, and a driving block drives the rectangular plate and goods lifted below to move. And the movable block can also be controlled to move on the upper end face of the fixed top beam, so that the movable block drives the crane main beam to move, and the crane main beam can drive the driving block, the rectangular plate and the lifting seat to move, so that the lifting seat, the hook and the goods can be conveniently transferred to proper positions, and subsequent use of the goods is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of cranes, and in particular to a double-girder bridge crane. Background Art

[0002] A bridge crane is a type of lifting equipment that is horizontally mounted above workshops, warehouses, and material yards to lift materials. It can run longitudinally along tracks laid on elevated platforms on both sides, making full use of the space under the bridge to lift materials without being hindered by ground equipment. Bridge cranes are the most widely used and largest type of lifting machinery.

[0003] Existing technologies have also proposed some solutions. For example, a Chinese patent application with publication number CN223060552U describes a bridge crane that includes a guide rail, a trolley, a current collector, a busbar, a lifting member, and a cleaning member. The trolley is movably mounted on the guide rail, the busbar is connected to the trolley via the current collector, and the current collector is slidably mounted on the busbar. The lifting member and the cleaning member are mounted on the trolley, and the cleaning member is used to clean the busbar. This bridge crane can promptly clean dirt and dust accumulated on the busbar during operation, avoiding accidents and improving production efficiency and convenience.

[0004] Although the above technical solution can clean the stains and dust accumulated on the busbar in time during work, there are still other problems in its actual use. For example, when the goods are lifted and transported, the handle of the goods needs to be placed on the surface of the hook and fixed by a fixing mechanism. After the goods are transported and fall to the ground, the staff often needs to manually assist in unlocking the fixing mechanism, which is more troublesome to operate.

[0005] Therefore, it is necessary to provide a double-girder bridge crane to solve the above problems.

[0006] It should be noted that the above information disclosed in this Background section is only for understanding the background of the present inventive concept and therefore it may contain information that does not constitute the prior art. Summary of the Invention

[0007] The technical solution adopted by the present invention to solve its technical problems is: a double-girder bridge crane, comprising two fixed top beams, the upper end surfaces of the two fixed top beams are slidingly provided with moving blocks, the moving blocks move above the fixed top beams through a controller, two crane main beams are installed on the side walls of the moving blocks, the upper end surfaces of the crane main beams are jointly installed with a rectangular plate, the bottom of the rectangular plate is installed with a hanging seat, and the bottom of the hanging seat is provided with a hook.

[0008] Furthermore, the upper end surface of the crane main beam is fixedly installed with a guide rail, the outer surface of the guide rail is slidably provided with a driving block, the interior of the driving block is provided with a groove adapted to the guide rail, the rectangular plate is fixedly installed on the upper surface of the driving block, the bottom of the rectangular plate is rotatably provided with a winding wheel through the bracket, the outer circumferential surface of the winding wheel is provided with a pull rope group, and the bottom of the pull rope group is fixedly connected to the upper end surface of the hanging seat; during operation, after the hanging seat and the hook lift the goods to be transferred, the winding wheel is controlled to rotate so that the winding wheel reels the pull rope group, and the hanging seat and the hook are lifted upward by the pull rope group, and then the driving block is controlled to move on the outer surface of the guide rail, so that the driving block drives the rectangular plate and the goods lifted below to move, or the moving block is controlled to move on the upper end surface of the fixed top beam, so that the moving block drives the crane main beam to move, so that the crane main beam can drive the driving block, the rectangular plate and the hanging seat to move, so that the hanging seat, the hook and the goods can be conveniently transferred to a suitable position, which is convenient for the subsequent use of the goods.

[0009] Furthermore, a vertical groove is provided inside the hanging seat, an elastic seat is fixedly installed on the top groove wall of the vertical groove, a spring is provided on the outer surface of the elastic seat, a fixed vertical rod is fixedly installed on the bottom of the elastic seat, the hook is fixedly installed on the bottom of the fixed vertical rod, the limiting oblique rod is rotatably arranged on both side walls of the fixed vertical rod, a rotating shaft is provided at the contact position between the limiting oblique rod and the fixed vertical rod, and a torsion spring is sleeved on the outer surface of the rotating shaft, and the bottom edge of the limiting oblique rod is in contact with the side wall of the hook; when working, in the initial state, that is, when there is no cargo hanging inside the hook, the elastic seat is not subjected to the tension of the fixed vertical rod. When the goods are hung on the surface and the pull rope group above lifts the hanging seat and the goods, the fixed vertical rod and the hanging seat are affected by the gravity of the goods, and the fixed vertical rod will pull the elastic seat at its top, causing the elastic seat to deform, and the limiting diagonal rod is again located at the edge of the hook under the elastic force of the torsion spring, that is, during the lifting and transportation of the goods, the end of the limiting diagonal rod will always be in contact with the side wall of the hook, which can facilitate the lifting and transportation of the goods, and the limiting diagonal rod can always limit the handle of the goods, avoiding the problem of the handle of the goods being unhooked due to the centrifugal force generated by the swinging of the goods during the transportation process, thereby ensuring the safety of the goods during the transportation process.

[0010] Furthermore, a limiting column is fixedly installed on the bottom of the hanger, a guide groove is opened on the side wall of the limiting oblique rod, the bottom of the limiting column is arranged inside the guide groove, and the shape of the bottom of the limiting column is adapted to the shape of the guide groove.

[0011] When the lifting gear is lifted up, the lifting gear is tightened and the support frame is tightened, so that the lifting gear can be tightened and the support frame can be tightened. When the lifting gear is lifted up, the lifting gear can be tightened and the support frame can be tightened. When the lifting gear is lifted up, the lifting gear can be tightened and the support frame can be tightened.

[0012] Furthermore, an elastic limiting block is fixedly installed at the bottom of the limiting oblique rod, and an embedding groove is provided on the surface of the hook. The shape of the elastic limiting block is adapted to the shape of the embedding groove, and the surface of the embedding groove is provided with rounded corners. During operation, when the bottom end of the limiting oblique rod contacts the hook, the elastic limiting block at the bottom of the limiting oblique rod will be located inside the embedding groove, and the elastic limiting block and the embedding groove will limit each other, which can further avoid the problem of goods being unhooked during the lifting and transportation process, and further improve the safety of the goods during transportation.

[0013] Furthermore, two tooth plates are fixedly installed on the side wall of the fixed vertical rod away from the limiting diagonal rod. The two tooth plates are symmetrically designed to be equivalent to the fixed vertical rod. A support frame is fixedly installed on the bottom of the hanger. A gear is provided for rotation inside the support frame. The gear and the tooth plate are meshed and connected. A pressing unit is provided on the outer surface of the gear, and the pressing unit is used to press the outer surface of the cargo.

[0014] When the load is lifted, the bottom of the L-shaped support rod is pressed against the load surface, thereby reducing the risk of the load falling or hitting other equipment due to excessive swinging of the load.

[0015] Furthermore, an electric telescopic rod is installed inside the L-shaped support rod, the side wall of the pressure plate is connected to the telescopic end of the electric telescopic rod, and the side wall of the hanging seat is provided with a visual cod camera; during operation, when the L-shaped support rod drives the pressure plate to rotate to the side away from the fixed vertical rod, and the cargo is completely lifted, if the bottom of the pressure plate is not in contact with the surface of the cargo at this time, the telescopic end of the electric telescopic rod can continue to be controlled to move, so that the telescopic end of the electric telescopic rod drives the pressure plate to move downward, so that the pressure plate can be further pressed on the surface of the cargo, facilitating the subsequent transportation of the cargo.

[0016] Furthermore, the lower end surface of the pressure plate is provided with rubber bumps, and the side wall of the support frame is provided with a rotating shaft adapted to the gear.

[0017] The beneficial effects of the present invention are as follows: a double-girder bridge crane provided by the present invention, under the elastic force of the support spring and the elastic seat, the fixed vertical rod will gradually drive the limiting diagonal rod to move upward, and make the inclined surface of the limiting diagonal rod contact the bottom end of the limiting column again, and under the pressure of the limiting column, the limiting diagonal rod will gradually move away from the hook, which is convenient for the subsequent removal of the goods. A support spring is provided, which can cooperate with the elastic seat to quickly drive the fixed vertical rod to recover, and such a design does not require the staff to manually bend the limiting diagonal rod, thereby reducing the workload of the staff.

[0018] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings: Figure 1 It is an overall schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the main beam of the crane in the present invention; Figure 3 This is a schematic diagram of the structure of the rectangular plate portion of the present invention; Figure 4 This is a structural diagram of the suspension seat in the present invention; Figure 5 This is a partial structural diagram of the pull rope assembly in the present invention; Figure 6 This is a schematic structural diagram of the hook portion of the present invention; Figure 7 This is a structural diagram of the fixed vertical rod portion of the present invention; Figure 8 This is a schematic diagram of the structure of the limiting inclined rod in the present invention; Figure 9 It is a schematic diagram of the structure of the pressure plate in the present invention.

[0020] Among them, the reference numerals in the figures are: 1. Fixed top beam; 2. Moving block; 3. Crane main beam; 301. Guide rail; 4. Rectangular plate; 401. Winding wheel; 402. Pull rope group; 5. Hanging seat; 501. Hook; 6. Driving block; 7. Vertical slot; 8. Elastic seat; 801. Fixed vertical rod; 802. Limiting diagonal rod; 803. Torsion spring; 9. Limiting column; 10. Guide slot; 11. Guide slider; 12. Support spring; 13. Elastic limiting block; 14. Embedded slot; 15. Tooth plate; 16. Support frame; 17. Gear; 18. L-shaped support rod; 19. Pressure plate; 20. Electric telescopic rod. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0023] like Figures 1 to 9As shown, the present invention provides a double-girder bridge crane, comprising two fixed top beams 1, the upper end surfaces of the two fixed top beams 1 are both slidably provided with moving blocks 2, the moving blocks 2 are moved above the fixed top beams 1 by a controller, the side walls of the moving blocks 2 are installed with two crane main beams 3, the upper end surfaces of the crane main beams 3 are commonly installed with a rectangular plate 4, the bottom of the rectangular plate 4 is installed with a hanging seat 5, the bottom of the hanging seat 5 is provided with a hook 501, the hook 501 is a double-hook design, and the single hook body is a curved design, the limiting diagonal rod 802 is used to cooperate with the hook 501 and limit the opening of the hook 501; During operation, when the goods are to be transferred, the handle of the goods is placed at the opening of the hook 501, and then the limiting oblique rod 802 is pressed on the opening of the hook 501, so that the limiting oblique rod 802 limits the opening of the hook 501, and then the goods are controlled to be lifted, and the driving block 6 is controlled to move on the outer surface of the guide rail 301, so that the driving block 6 drives the rectangular plate 4 and the goods suspended below to move, and the moving block 2 can also be controlled to move on the upper end surface of the fixed top beam 1, so that the moving block 2 drives the crane main beam 3 to move, and the goods are transferred to a suitable position. Through the cooperation of the limiting oblique rod 802 and the hook 501, the problem of separation of the two due to centrifugal force during the transfer process can be avoided, and the double hooks can disperse the load of the goods during the transfer process through the symmetrical hook body, thereby further improving the safety of the goods during transfer.

[0024] A guide rail 301 is fixedly mounted on the upper end surface of the crane main beam 3. A driving block 6 is slidably mounted on the outer surface of the guide rail 301. A groove adapted to the guide rail 301 is formed inside the driving block 6. The rectangular plate 4 is fixedly mounted on the upper surface of the driving block 6. A winding wheel 401 is rotatably mounted on the bottom of the rectangular plate 4 via a bracket. A pull rope group 402 is mounted on the outer circumference of the winding wheel 401. The bottom of the pull rope group 402 is fixedly connected to the upper end surface of the hanging seat 5. During operation, after the hanging seat 5 and the hook 501 lift the goods to be transferred, the winding wheel 401 is controlled to rotate so that the winding wheel 401 reels the pull rope group 402, and the hanging seat 5 and the hook 501 are lifted upward through the pull rope group 402, and then the driving block 6 is controlled to move on the outer surface of the guide rail 301, so that the driving block 6 drives the rectangular plate 4 and the goods suspended below to move. The moving block 2 can also be controlled to move on the upper end surface of the fixed top beam 1 so that the moving block 2 drives the crane main beam 3 to move, so that the crane main beam 3 can drive the driving block 6, the rectangular plate 4 and the hanging seat 5 to move, so that the hanging seat 5, the hook 501 and the goods can be conveniently transferred to a suitable position, which is convenient for the subsequent use of the goods.

[0025] A vertical slot 7 is provided inside the hanging seat 5, an elastic seat 8 is fixedly installed on the top slot wall of the vertical slot 7, a spring is provided on the outer surface of the elastic seat 8, a fixed vertical rod 801 is fixedly installed on the bottom of the elastic seat 8, the hook 501 is fixedly installed on the bottom of the fixed vertical rod 801, the limiting oblique rod 802 is rotatably provided on both side walls of the fixed vertical rod 801, a rotating shaft is provided at the contact position between the limiting oblique rod 802 and the fixed vertical rod 801, and a torsion spring 803 is sleeved on the outer surface of the rotating shaft, and the bottom edge of the limiting oblique rod 802 contacts the side wall of the hook 501; During operation, in the initial state, that is, when there is no cargo hanging inside the hook 501, the elastic seat 8 is not subjected to the tension of the fixed vertical rod 801, and the positions of the limiting inclined rod 802 and the hook 501 are as shown in the attached figure. Figure 4 As shown, when the goods are hung on the surface of the hook 501 and the upper pull rope group 402 lifts the hanging seat 5 and the goods, the fixed vertical rod 801 and the hanging seat 5 are affected by the gravity of the goods, and the fixed vertical rod 801 will pull the elastic seat 8 at its top, causing the elastic seat 8 to deform, and the limiting oblique rod 802 is again located at the edge of the hook 501 under the elastic force of the torsion spring 803, that is, during the lifting and transportation of the goods, the end of the limiting oblique rod 802 will always be in contact with the side wall of the hook 501, which can facilitate the lifting and transportation of the goods, and the limiting oblique rod 802 can always limit the handle of the goods, avoiding the problem of the handle of the goods being unhooked due to the centrifugal force generated by the swinging of the goods during the transportation process, thereby ensuring the safety of the goods during the transportation process.

[0026] The bottom of the hanging seat 5 is fixedly mounted with a limiting column 9, and the side wall of the limiting oblique rod 802 is provided with a guide groove 10. The bottom of the limiting column 9 is arranged inside the guide groove 10, and the shape of the bottom of the limiting column 9 is adapted to the shape of the guide groove 10. During operation, in the initial state, the bottom of the limiting column 9 is located inside the guide groove 10, and Figure 4 As shown, at this time, the bottom end of the limiting inclined rod 802 and the hook 501 are not in contact, that is, the handle of the goods can be placed on the surface of the hook 501 through the gap between the limiting inclined rod 802 and the hook 501, and at this time, the torsion spring 803 is in a contracted state under the pressure of the bottom of the limiting column 9 on the limiting inclined rod 802; when the goods are lifted up, the fixed vertical rod 801 will drive the limiting inclined rod 802 to gradually move away from the bottom of the limiting column 9, that is, the bottom of the limiting column 9 no longer squeezes the limiting inclined rod 802, so that the limiting inclined rod 802 will rotate to the side wall of the hook 501 under the action of the torsion spring 803, that is, the bottom end of the limiting inclined rod 802 will be tightly pressed against the side wall of the hook 501, thus facilitating the subsequent transportation of goods.

[0027] A guide slider 11 is fixedly mounted on the side wall of the fixed vertical rod 801. The shape of the guide slider 11 matches the shape of the vertical slot 7. A support spring 12 is fixedly mounted on the bottom of the guide slider 11. The bottom of the support spring 12 is connected to the inner wall of the hanger 5. When the load is lifted, the guide rail 801 is moved downwards by the spring 12 and the spring 12 is released.

[0028] An elastic limiting block 13 is fixedly installed at the bottom of the limiting oblique rod 802, and an embedding groove 14 is opened on the surface of the hook 501. The shape of the elastic limiting block 13 is adapted to the shape of the embedding groove 14, and the surface of the embedding groove 14 is opened with rounded corners; During operation, when the bottom end of the limiting diagonal rod 802 contacts the hook 501, the elastic limiting block 13 at the bottom of the limiting diagonal rod 802 will be located inside the embedded groove 14, and the elastic limiting block 13 and the embedded groove 14 will limit each other, which can further avoid the problem of goods being unhooked during the lifting and transportation process, and further improve the safety of the goods during transportation.

[0029] Two tooth plates 15 are fixedly installed on the side wall of the fixed vertical rod 801 away from the limiting diagonal rod 802. The two tooth plates 15 are symmetrically designed to be equivalent to the fixed vertical rod 801. A support frame 16 is fixedly installed on the bottom of the hanger 5. A gear 17 is provided for rotation inside the support frame 16. The gear 17 is meshed and connected with the tooth plate 15. A pressing unit is provided on the outer surface of the gear 17, and the pressing unit is used to press the outer surface of the goods.

[0030] The pressing unit includes an L-shaped support rod 18, wherein a plurality of L-shaped support rods 18 are provided, and the number of L-shaped support rods 18 on the surface of one gear 17 is two, and a pressing plate 19 is provided at the bottom of the L-shaped support rod 18; When the load is lifted, the bottom end of the L-shaped support rod 18 is close to one side of the fixed vertical rod 801. When the fixed vertical rod 801 is subjected to the weight of the load and the load is lifted, the fixed vertical rod 801 will simultaneously drive the toothed plate 15 of its side wall to move downward. Since the toothed plate 15 is meshed with the gear 17, the toothed plate 15 will drive the gear 17 to rotate during the downward movement, so that the gear 17 drives the L-shaped support rod 18 on its outer surface to rotate, that is, the L-shaped support rod 18 will rotate away from the fixed vertical rod 801. When the load is lifted, the pressure plate 19 at the bottom of the L-shaped support rod 18 will press on the surface of the load. This can reduce the subsequent swinging of the load during transportation and avoid the problem of the load falling or touching other equipment due to excessive swinging of the load.

[0031] An electric telescopic rod 20 is installed inside the L-shaped support rod 18, and the side wall of the pressure plate 19 is connected to the telescopic end of the electric telescopic rod 20. A visual cod camera is provided on the side wall of the hanging seat 5. The lower end surface of the pressure plate 19 is provided with rubber bumps. The side wall of the support frame 16 is provided with a rotating shaft adapted to the gear 17; During operation, after the L-shaped support rod 18 drives the pressure plate 19 to rotate away from the fixed vertical rod 801 and the cargo is completely lifted, if the bottom of the pressure plate 19 is not in contact with the surface of the cargo at this time, the telescopic end of the electric telescopic rod 20 can be controlled to move, so that the telescopic end of the electric telescopic rod 20 drives the pressure plate 19 to move downward, so that the pressure plate 19 can be further pressed on the surface of the cargo, facilitating the subsequent transportation of the cargo. The visual cod camera can observe the status of the cargo in real time, and can also observe the distance between the bottom end of the pressure plate 19 and the cargo.

[0032] Working principle: After the hanging seat 5 and the hook 501 lift the goods to be transferred, the winding wheel 401 is controlled to rotate so that the winding wheel 401 reels the pull rope group 402, and the hanging seat 5 and the hook 501 are lifted upwards through the pull rope group 402, and then the driving block 6 is controlled to move on the outer surface of the guide rail 301, so that the driving block 6 drives the rectangular plate 4 and the goods suspended below to move, or the moving block 2 is controlled to move on the upper end surface of the fixed top beam 1 so that the moving block 2 drives the crane main beam 3 to move, so that the crane main beam 3 can drive the driving block 6, the rectangular plate 4 and the hanging seat 5 to move, so that the hanging seat 5, the hook 501 and the goods can be conveniently transferred to a suitable position, which is convenient for the subsequent use of the goods; In the initial state, that is, when there is no cargo hanging inside the hook 501, the elastic seat 8 is not subjected to the tension of the fixed vertical rod 801, and the positions of the limiting inclined rod 802 and the hook 501 are as shown in the attached figure. Figure 4As shown, when the goods are hung on the surface of the hook 501 and the upper pull rope group 402 lifts the hanging seat 5 and the goods, the fixed vertical rod 801 and the hanging seat 5 are subjected to the gravity of the goods, and the fixed vertical rod 801 will pull the elastic seat 8 at its top, causing the elastic seat 8 to deform, and the limiting inclined rod 802 is located at the edge of the hook 501 again under the elastic force of the torsion spring 803, that is, during the lifting and transportation of the goods, the end of the limiting inclined rod 802 will always contact the side wall of the hook 501, which can facilitate the lifting and transportation of the goods, and the limiting inclined rod 802 can always limit the handle of the goods, avoiding the problem of the centrifugal force generated by the swinging of the goods causing the handle to be unhooked during the transportation of the goods, thereby ensuring the safety of the goods during the transportation process; in the initial state, the bottom of the limiting column rod 9 is located inside the guide groove 10, and refer to the attached Figure 4 As shown, at this time, the bottom end of the limiting inclined rod 802 and the hook 501 are not in contact, that is, the handle of the goods can be placed on the surface of the hook 501 through the gap between the limiting inclined rod 802 and the hook 501, and at this time, the torsion spring 803 is in a contracted state under the pressure of the bottom of the limiting column 9 on the limiting inclined rod 802; when the goods are lifted, the fixed vertical rod 801 will drive the limiting inclined rod 802 to gradually move away from the bottom of the limiting column 9, that is, the bottom of the limiting column 9 no longer presses the limiting inclined rod 802, so that the limiting inclined rod 802 will rotate to the side wall of the hook 501 under the action of the torsion spring 803, that is, the bottom end of the limiting inclined rod 802 will be tightly pressed against the side wall of the hook 501, thus facilitating the subsequent transportation of goods; When the fixed vertical rod 801 is subjected to the pulling force of the goods, the fixed vertical rod 801 will simultaneously drive the guide slider 11 to move downward and squeeze the supporting spring 12; when the goods are lifted to a suitable position and placed on the ground again, the fixed vertical rod 801 is no longer subjected to the gravity of the goods, so under the elastic force of the supporting spring 12 and the elastic seat 8, the fixed vertical rod 801 will gradually drive the limiting oblique rod 802 to move upward, and make the inclined surface of the limiting oblique rod 802 contact with the bottom end of the limiting column 9 again, and under the pressure of the limiting column 9, the limiting oblique rod 802 will gradually move away from the hook 501, as shown in FIG. The support spring 12 is provided to cooperate with the elastic seat 8 to quickly drive the fixed vertical rod 801 to recover. In addition, with this design, there is no need for the staff to manually bend the limiting inclined rod 802, which reduces the workload of the staff. When the bottom end of the limiting inclined rod 802 contacts the hook 501, the elastic limiting block 13 at the bottom of the limiting inclined rod 802 will be located inside the embedding groove 14, and the elastic limiting block 13 and the embedding groove 14 will limit each other. This can further avoid the problem of the goods being unhooked during the lifting and transportation process, and further improve the safety of the goods during transportation. In the initial state, that is, when the fixed vertical rod 801 is not subjected to the weight of the cargo, the bottom end of the L-shaped support rod 18 is close to one side of the fixed vertical rod 801; when the fixed vertical rod 801 is subjected to the weight of the cargo and the cargo is lifted, the fixed vertical rod 801 will simultaneously drive the toothed plate 15 of its side wall to move downward during the downward movement. Since the toothed plate 15 and the gear 17 are meshed and connected, the toothed plate 15 will drive the gear 17 to rotate during the downward movement, so that the gear 17 drives the L-shaped support rod 18 on its outer surface to rotate, that is, the L-shaped support rod 18 will rotate away from the fixed vertical rod 801. After that, when the cargo is hoisted as a whole, the L The pressure plate 19 at the bottom of the L-shaped support rod 18 will press on the surface of the goods, which can reduce the swinging of subsequent goods during transportation and avoid the problem of goods falling or touching other equipment due to excessive swinging of the goods; when the L-shaped support rod 18 drives the pressure plate 19 to rotate to the side away from the fixed vertical rod 801 and the goods are completely lifted, if the bottom of the pressure plate 19 does not contact the surface of the goods at this time, the telescopic end of the electric telescopic rod 20 can continue to be controlled to move, so that the telescopic end of the electric telescopic rod 20 drives the pressure plate 19 to move downward, so that the pressure plate 19 can be further pressed on the surface of the goods, facilitating the subsequent transportation of goods.

[0033] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A double-girder bridge crane, characterized by: The crane comprises two fixed top beams, the upper end surfaces of the two fixed top beams are both slidably provided with moving blocks, the moving blocks are moved above the fixed top beams by a controller, the side walls of the moving blocks are installed with two crane main beams, the upper end surfaces of the crane main beams are commonly installed with a rectangular plate, the bottom of the rectangular plate is installed with a hanging seat, the bottom of the hanging seat is provided with a hook, and a limiting oblique rod is provided below the hanging seat, the limiting oblique rod is used to cooperate with the hook and limit the opening of the hook; A vertical groove is provided inside the hanger, an elastic seat is fixedly installed on the top groove wall of the vertical groove, a spring is provided on the outer surface of the elastic seat, a fixed vertical rod is fixedly installed on the bottom of the elastic seat, the hook is fixedly installed on the bottom of the fixed vertical rod, the limiting oblique rod is rotatably arranged on both side walls of the fixed vertical rod, a rotating shaft is provided at the contact position between the limiting oblique rod and the fixed vertical rod, and a torsion spring is sleeved on the outer surface of the rotating shaft, and the bottom edge of the limiting oblique rod is in contact with the side wall of the hook.

2. A double-girder bridge crane according to claim 1, characterized in that: A guide rail is fixedly installed on the upper end surface of the crane main beam, and a driving block is slidably provided on the outer surface of the guide rail. A groove that is compatible with the guide rail is provided inside the driving block. The rectangular plate is fixedly installed on the upper surface of the driving block. A winding wheel is rotatably provided on the bottom of the rectangular plate through a bracket. A pull rope group is provided on the outer peripheral surface of the winding wheel, and the bottom of the pull rope group is fixedly connected to the upper end surface of the suspension seat.

3. The double-girder bridge crane according to claim 1, characterized in that: A limiting column is fixedly installed on the bottom of the hanger, a guide groove is opened on the side wall of the limiting oblique rod, the bottom of the limiting column is arranged inside the guide groove, and the shape of the bottom of the limiting column is adapted to the shape of the guide groove.

4. A double-girder bridge crane according to claim 3, characterized in that: A guide slider is fixedly installed on the side wall of the fixed vertical rod, and the shape of the guide slider is adapted to the shape of the vertical groove. A support spring is fixedly installed on the bottom of the guide slider, and the bottom of the support spring is connected to the inner wall of the hanger.

5. The double-girder bridge crane according to claim 4, characterized in that: An elastic limiting block is fixedly installed on the bottom of the limiting oblique rod, and an embedding groove is provided on the surface of the hook. The shape of the elastic limiting block is adapted to the shape of the embedding groove, and the surface of the embedding groove is provided with rounded corners.

6. The double-girder bridge crane according to claim 4, characterized in that: Two tooth plates are fixedly installed on the side wall of the fixed vertical rod away from the limiting diagonal rod. The two tooth plates are symmetrically designed to be equivalent to the fixed vertical rod. A support frame is fixedly installed on the bottom of the hanger. A gear is provided for rotation inside the support frame. The gear and the tooth plate are meshed and connected. A pressing unit is provided on the outer surface of the gear, and the pressing unit is used to press the outer surface of the cargo.

7. The double-girder bridge crane according to claim 6, characterized in that: The pressing unit includes an L-shaped support rod, a plurality of the L-shaped support rods are provided, and the number of the L-shaped support rods on one gear surface is two, and a pressing plate is provided at the bottom of the L-shaped support rod.

8. The double-girder bridge crane according to claim 7, characterized in that: An electric telescopic rod is installed inside the L-shaped support rod, and the side wall of the pressure plate is connected to the telescopic end of the electric telescopic rod.

9. The double-girder bridge crane according to claim 7, characterized in that: The lower end surface of the pressure plate is provided with rubber bumps, and the side wall of the support frame is provided with a rotating shaft adapted to the gear.

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