Marine portal crane with telescopic cantilever

Abstract

The utility model relates to the technical field of portal cranes, and provides a marine portal crane with a telescopic cantilever, which comprises an operation table, A-shaped support legs are fixedly connected to the bottom ends of the two sides of the operation table, two bases are fixedly connected to the bottom ends of the two A-shaped support legs, and the telescopic cantilever is arranged on the operation table. The outer walls of the bottom ends of the four bases are fixedly connected with a plurality of universal wheels, the universal wheels are horizontally distributed on the outer walls of the bottom ends of the bases at equal intervals, a first bearing assembly is arranged between every two A-shaped supporting legs and used for bearing a heavy object below the operation table, and an operation cavity is formed in the operation table; rotating assemblies are arranged on the inner walls of the front side and the rear side of the operation cavity correspondingly, second bearing assemblies are arranged on the outer walls of the front side and the rear side of the operation table correspondingly and used for bearing weights around the operation table, and braking assemblies are arranged on one sides of the two rotating assemblies correspondingly and used for braking and reinforcing the rotating assemblies. And the carrying range of the device is expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of gantry cranes, and in particular to a marine gantry crane with a telescopic cantilever. Background Art

[0002] Gantry crane, also known as gantry crane, is a variation of bridge crane. The metal structure of gantry crane is like a door-shaped frame. Two legs are installed under the load-bearing main beam. It can walk directly on the ground track. Both ends of the main beam can have outward cantilever beams. It has the characteristics of high site utilization, large operating range, wide adaptability and strong versatility. It is mainly used for loading and unloading operations of outdoor freight yards, material yards and bulk cargo.

[0003] After searching, the existing patent (publication number: CN220886735U) discloses a new type of shipbuilding gantry crane, including a crane body and a moving wheel, the lower surface of the crane body is fixedly connected to the moving wheel, the outer surface of the moving wheel is provided with a limiting hole, the middle part of the lower surface of the crane body is fixedly connected to a fixed block, and the lower surface of the fixed block is fixedly connected to a connecting block. The novel shipbuilding gantry crane controls the sliding plate to move upward so that the limit groove is separated from the outer surface of the hand-held rod. At the same time, the reset spring being squeezed will generate a reaction force, driving the moving block and the limit rod to move outward until the limit rod is firmly inserted into the inside of the limit hole at the specified position, thereby fixing the connecting block and the moving wheel, making it difficult for the crane body to move or deviate, and greatly improving the stability of the crane body when being used. The above utility model realizes the fixation between the connecting block and the moving wheel, avoids the possibility of the crane moving during use, and increases the stability of the crane body. However, the device can only lift the heavy objects directly below the crane during use. When the user needs to lift the heavy objects near the crane, the crane needs to be moved to the new destination before it can be moved. This reduces the carrying efficiency of the device and increases the carrying cost of the user. Utility Model Content

[0004] The utility model provides a marine gantry crane with a telescopic cantilever, which solves the problem in the related art that the device can only lift heavy objects directly below the crane during use. When a user needs to lift heavy objects near the crane, the crane needs to be moved to a new destination before the lifting can be carried out, which reduces the lifting efficiency of the device and increases the lifting cost of the user.

[0005] The technical solution of the utility model is as follows: A marine gantry crane with a telescopic cantilever, comprising: a running platform, the bottom ends of both sides of the running platform are fixedly connected with A-shaped legs, the bottom ends of two of the A-shaped legs are fixedly connected to two bases, the bottom outer walls of four of the bases are fixedly connected with a plurality of universal wheels, and the plurality of universal wheels are horizontally and equidistantly distributed on the bottom outer walls of the bases, a first bearing assembly is arranged between the two A-shaped legs for carrying heavy objects under the running platform, an operating cavity is arranged inside the running platform, the front and rear inner walls of the operating cavity are arranged with rotating assemblies, the front and rear outer walls of the running platform are arranged with second bearing assemblies for carrying heavy objects around the running platform, and a braking assembly is arranged on one side of the two rotating assemblies for braking and reinforcing the rotating assembly.

[0006] Preferably, the first bearing assembly includes a slide rail fixedly connected to the outer wall of the bottom end of the operating platform, the bottom ends of both sides of the slide rail are slidably connected to moving wheels, the lower end of the slide rail is provided with an electric hoist, the top of the electric hoist is rotatably connected to the outer wall of one side of the two moving wheels, a lifting rope is provided inside the electric hoist, and the bottom end of one side of the lifting rope is fixedly connected to a first hook.

[0007] Preferably, the rotating assembly comprises a motor mounted on an inner wall of one side of the operating cavity, an output end of the motor is fixedly connected to a rotating shaft, and an outer wall of the rotating shaft is fixedly connected to a rotating gear.

[0008] Preferably, the second bearing assembly comprises a telescopic arm arranged on an outer wall of one side of the operating platform, the rotating shaft passes through the outer wall of the operating platform and is fixedly connected to the telescopic arm, and the top end of the telescopic arm is fixedly connected to a mounting seat.

[0009] Preferably, the second bearing assembly also includes a hydraulic rod fixedly connected to the outer wall of one side of the mounting seat, the output end of the hydraulic rod is fixedly connected to the fixing seat, the bottom end of the fixing seat is fixedly connected to the top outer wall of the output end of the telescopic arm, the bottom end of the output end of the telescopic arm is fixedly connected to a bearing chain, and the bottom end of the bearing chain is fixedly connected to a second hook.

[0010] Preferably, the brake assembly includes a brake gear meshingly connected to the outer wall of one side of the rotating gear, a plurality of fixing grooves are opened on the outer wall of one side of the brake gear, and the plurality of fixing grooves are arranged in a circular array on the outer wall of one side, a rotating rod is fixedly connected to the inner wall at the center of the brake gear, and both ends of the rotating rod are rotatably connected to the inner wall of the operating chamber.

[0011] Preferably, the brake assembly further comprises a sliding sleeve rotatably connected to the outer wall on the other side of the rotating rod, and one outer wall of the sliding sleeve is fixedly connected to the inner wall of the operating chamber.

[0012] Preferably, the brake assembly further comprises electric telescopic rods fixedly connected to two ends of the other side of the sliding sleeve, and the output ends of the two electric telescopic rods are both fixedly connected with arc-shaped fixing heads.

[0013] The working principle and beneficial effects of the utility model are:

[0014] 1. In the utility model, the output end of the telescopic arm is driven to move toward the destination through the output end of the hydraulic rod, and then the motor is started, and the rotating shaft is driven to rotate through the output end of the motor, and the telescopic arm is driven to rotate downward through the rotating shaft, and the second hook is driven to move downward through the load-bearing chain, and the heavy object is lifted. When the heavy object moves to the target height, the electric telescopic rod is started, and the arc-shaped fixed head is driven to engage with the fixed groove through the output end of the electric telescopic rod, so that the brake gear brakes the rotating gear, so that the rotating gear remains stable, thereby increasing the stability of the telescopic arm transportation and increasing the transportation efficiency of the telescopic arm. At the same time, the operating platform is provided with telescopic arms at the front and rear, so that the two telescopic arms of the device can be transported at the same time, which expands the transportation range of the device, improves the transportation efficiency of the device, and shortens the transportation time; BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] Figure 1 This is a schematic diagram of the front three-dimensional structure proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the front view of the cross-sectional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the rotating assembly, the second bearing assembly and the braking assembly proposed in the utility model;

[0019] Figure 4 This is a schematic diagram of the unfolded structure of the brake assembly proposed in the utility model;

[0020] In the figure: 1. operating platform; 2. A-shaped support leg; 3. base; 4. universal wheel; 5. first bearing assembly; 501. slide rail; 502. moving wheel; 503. electric hoist; 504. lifting rope; 505. first hook; 6. operating chamber; 7. rotating assembly; 701. motor; 702. rotating gear; 703. rotating shaft; 8. second bearing assembly; 801. telescopic arm; 802. mounting seat; 803. hydraulic rod; 804. fixing seat; 805. bearing chain; 806. second lifting hook; 9. braking assembly; 901. braking gear; 902. rotating rod; 903. fixing groove; 904. sliding sleeve; 905. electric telescopic rod; 906. arc-shaped fixing head. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The present application discloses a marine gantry crane with a telescopic cantilever. Figure 1 and Figure 2 A marine gantry crane with a telescopic cantilever comprises: a running platform 1, A-shaped legs 2 are fixedly connected to the bottom ends of both sides of the running platform 1, the bottom ends of the two A-shaped legs 2 are fixedly connected to two bases 3, the bottom outer walls of the four bases 3 are fixedly connected to a plurality of universal wheels 4, and the plurality of universal wheels 4 are horizontally and equidistantly distributed on the bottom outer wall of the base 3, a first bearing assembly 5 is arranged between the two A-shaped legs 2 for carrying heavy objects under the running platform 1, an operating cavity 6 is arranged inside the running platform 1, and rotating assemblies 7 are arranged on the inner walls of the front and rear sides of the operating cavity 6, and second bearing assemblies 8 are arranged on the outer walls of the front and rear sides of the running platform 1 for carrying heavy objects around the running platform 1, and a braking assembly 9 is arranged on one side of the two rotating assemblies 7 for braking and accelerating the rotating assembly 7 The first bearing component 5 includes a slide rail 501 fixedly connected to the outer wall of the bottom end of the operating platform 1, and the bottom ends of both sides of the slide rail 501 are slidably connected with moving wheels 502. An electric hoist 503 is arranged at the lower end of the slide rail 501, and the top of the electric hoist 503 is rotatably connected to the outer wall of one side of the two moving wheels 502. A lifting rope 504 is arranged inside the electric hoist 503, and the bottom end of one side of the lifting rope 504 is fixedly connected with a first hook 505. When the operating platform 1 drives the A-shaped support leg 2 to move, the base 3 is driven to move through the A-shaped support leg 2, and the universal wheel 4 is driven to rotate through the base 3, so that the device is quickly transported to the destination. When the device is transported to the destination, the brake pad on the universal wheel 4 is activated to put the universal wheel 4 in a braking state, thereby maintaining the lifting stability of the device.

[0023] See also Figure 1-Figure 3The rotating assembly 7 includes a motor 701 installed on the inner wall of one side of the operating chamber 6, the output end of the motor 701 is fixedly connected to a rotating shaft 703, and the outer wall of the rotating shaft 703 is fixedly connected to a rotating gear 702. The second bearing assembly 8 includes a telescopic arm 801 arranged on the outer wall of one side of the operating platform 1, the rotating shaft 703 penetrates the outer wall of the operating platform 1 and is fixedly connected to the telescopic arm 801, and the top of the telescopic arm 801 is fixedly connected to a mounting seat 802. The second bearing assembly 8 also includes a hydraulic rod 803 fixedly connected to the outer wall of one side of the mounting seat 802, the output end of the hydraulic rod 803 is fixedly connected to a fixing seat 804, the bottom end of the fixing seat 804 is fixedly connected to the outer wall of the top end of the output end of the telescopic arm 801, and the bottom end of the output end of the telescopic arm 801 is fixedly connected to the outer wall of the top end of the output end of the telescopic arm 801. The end is fixedly connected with a load-bearing chain 805, and the bottom end of the load-bearing chain 805 is fixedly connected with a second hook 806. When the telescopic arm 801 needs to be lifted, the output end of the hydraulic rod 803 is started, and the fixed seat 804 is driven to move linearly through the output end of the hydraulic rod 803, and the output end of the telescopic arm 801 is driven to move linearly through the fixed seat 804, so that the telescopic arm 801 moves to the target location, thereby facilitating the device to extend according to the placement location of the heavy object. When the output end of the telescopic arm 801 moves to the destination, the output end of the motor 701 is started again to drive the rotating shaft 703 to rotate, and the telescopic arm 801 is driven to rotate through the rotating shaft 703, so that the telescopic arm 801 is convenient for lifting according to the placement height of the heavy object.

[0024] See also Figure 2-Figure 4The brake assembly 9 includes a brake gear 901 meshingly connected to the outer wall of one side of the rotating gear 702, and a plurality of fixed grooves 903 are provided on the outer wall of one side of the brake gear 901. The plurality of fixed grooves 903 are arranged in a circular array on the outer wall of one side of the brake gear 901. A rotating rod 902 is fixedly connected to the inner wall at the center of the brake gear 901, and both ends of the rotating rod 902 are rotatably connected to the inner wall of the operating chamber 6. The brake assembly 9 also includes a sliding sleeve 904 rotatably connected to the outer wall of the other side of the rotating rod 902, and one side outer wall of the sliding sleeve 904 is fixedly connected to the inner wall of the operating chamber 6. The brake assembly 9 also includes an electric telescopic rod 905 fixedly connected to the two ends of the other side of the sliding sleeve 904, and the output ends of the two electric telescopic rods 905 are fixedly connected with an arc-shaped fixed head 906, and the arc-shaped fixed head 906 is engaged with the inner wall of the fixed groove 903. At the same time, the fixed groove 903 is provided with a plurality of, which is convenient for the brake gear 901 to rotate. The arc-shaped fixed head 906 can be engaged with any two fixed grooves 903. When the second hook 806 under the telescopic arm 801 lifts the heavy object to the target height, the motor 701 is turned off and the electric telescopic rod 905 is started at the same time. The output ends of the two electric telescopic rods 905 drive the arc-shaped fixed head 906 to move toward the fixed groove 903 on one side of the brake gear 901, so that the arc-shaped fixed head 906 is engaged inside the fixed groove 903. At this time, the hydraulic rod 803 is started again, and the output end of the telescopic arm 801 is driven to move toward the cargo placement point through the output end of the hydraulic rod 803. After the heavy object is placed at the unloading point, the electric telescopic rod 905 is started, and the output end of the electric telescopic rod 905 drives the arc-shaped fixed head 906 to move in the opposite direction, so that the arc-shaped fixed head 906 is separated from the fixed groove 903. At this time, the motor 701 is started again, and the telescopic arm 801 is driven to rotate through the rotating shaft 703, thereby carrying out a new round of transportation.

[0025] Working principle and usage process: first push the device, and drive the universal wheel 4 to roll to the destination through the device, then start the motor on one side of the moving wheel 502, and drive the moving wheel 502 to move one end on the slide rail 501 through the motor, and then start the electric hoist 503, and drive the lifting rope 504 to move downward through the electric hoist 503, and drive the first hook 505 to move downward through the lifting rope 504, and carry the heavy objects under the operating platform 1. When the user needs to carry heavy objects at the peripheral position of the device, start the hydraulic rod 803, and drive the fixed seat 804 to move linearly in the direction of the heavy object through the output end of the hydraulic rod 803, and drive the output end of the telescopic arm 801 to move linearly in the direction of the heavy object through the fixed seat 804, and start the motor 701 at the same time, and drive the rotating shaft 703 to rotate through the output end of the motor 701, and drive the telescopic arm 801 to rotate in the direction of the heavy object through the rotating shaft 703. , so that the second hook 806 under the telescopic arm 801 hooks the weight, and then the motor 701 is started, and the rotating shaft 703 is driven to rotate in the opposite direction through the output end of the motor 701, and the telescopic arm 801 is driven to rotate in the opposite direction through the rotating shaft 703, and at the same time, the rotating shaft 703 drives the rotating gear 702 to rotate in the opposite direction, and the rotating gear 702 drives the brake gear 901 to rotate in the opposite direction. When the output end of the telescopic arm 801 drives the goods to move to the target height, the electric telescopic rod 905 is started, and the arc-shaped fixed head 906 is driven to move toward the direction of the brake gear 901 through the output end of the electric telescopic rod 905, so that the arc-shaped fixed head 906 is engaged with the inner wall of the fixing groove 903, and then the hydraulic rod 803 is started again, and the output end of the hydraulic rod 803 drives the output end of the telescopic arm 801 to move to the target location, thereby realizing the transportation of goods around the operating platform 1.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A marine gantry crane with a telescopic cantilever, comprising: The operating platform (1) is characterized in that the bottom ends of both sides of the operating platform (1) are fixedly connected to A-shaped legs (2), the bottom ends of the two A-shaped legs (2) are fixedly connected to two bases (3), the bottom outer walls of the four bases (3) are fixedly connected to a plurality of universal wheels (4), and the plurality of universal wheels (4) are horizontally and equidistantly distributed on the bottom outer wall of the base (3), a first bearing component (5) is arranged between the two A-shaped legs (2) for bearing heavy objects under the operating platform (1), an operating cavity (6) is arranged inside the operating platform (1), the inner walls of the front and rear sides of the operating cavity (6) are provided with rotating components (7), the outer walls of the front and rear sides of the operating platform (1) are provided with second bearing components (8) for bearing heavy objects around the operating platform (1), and a braking component (9) is arranged on one side of the two rotating components (7) for braking and reinforcing the rotating component (7).

2. A marine gantry crane with a telescopic cantilever according to claim 1, characterized in that: The first bearing assembly (5) comprises a slide rail (501) fixedly connected to the outer wall of the bottom end of the operating platform (1); the bottom ends of both sides of the slide rail (501) are slidably connected to moving wheels (502); an electric hoist (503) is arranged at the lower end of the slide rail (501); the top end of the electric hoist (503) is rotatably connected to the outer wall of one side of the two moving wheels (502); a lifting rope (504) is arranged inside the electric hoist (503); and the bottom end of one side of the lifting rope (504) is fixedly connected to a first hook (505).

3. A marine gantry crane with a telescopic cantilever according to claim 1, characterized in that: The rotating assembly (7) comprises a motor (701) mounted on an inner wall of one side of the operating chamber (6); an output end of the motor (701) is fixedly connected to a rotating shaft (703); and an outer wall of the rotating shaft (703) is fixedly connected to a rotating gear (702).

4. A marine gantry crane with a telescopic cantilever according to claim 3, characterized in that: The second bearing assembly (8) comprises a telescopic arm (801) arranged on an outer wall of one side of the operating platform (1); the rotating shaft (703) passes through the outer wall of the operating platform (1) and is fixedly connected to the telescopic arm (801); and a mounting seat (802) is fixedly connected to the top end of the telescopic arm (801).

5. A marine gantry crane with a telescopic cantilever according to claim 4, characterized in that: The second bearing assembly (8) further comprises a hydraulic rod (803) fixedly connected to an outer wall of one side of the mounting seat (802); the output end of the hydraulic rod (803) is fixedly connected to a fixing seat (804); the bottom end of the fixing seat (804) is fixedly connected to the top outer wall of the output end of the telescopic arm (801); the bottom end of the output end of the telescopic arm (801) is fixedly connected to a bearing chain (805); and the bottom end of the bearing chain (805) is fixedly connected to a second hook (806).

6. A marine gantry crane with a telescopic cantilever according to claim 3, characterized in that: The brake assembly (9) comprises a brake gear (901) meshingly connected to an outer wall of one side of a rotating gear (702); a plurality of fixing grooves (903) are provided on an outer wall of one side of the brake gear (901); the plurality of fixing grooves (903) are arranged in a circular array on an outer wall of one side of the brake gear (901); a rotating rod (902) is fixedly connected to the inner wall at the center of the brake gear (901); and both ends of the rotating rod (902) are rotatably connected to the inner wall of the operating chamber (6).

7. A marine gantry crane with a telescopic cantilever according to claim 6, characterized in that: The brake assembly (9) further comprises a sliding sleeve (904) rotatably connected to the outer wall of the other side of the rotating rod (902), and an outer wall of one side of the sliding sleeve (904) is fixedly connected to the inner wall of the operating chamber (6).

8. A marine gantry crane with a telescopic cantilever according to claim 7, characterized in that: The brake assembly (9) further comprises electric telescopic rods (905) fixedly connected to the two ends of the other side of the sliding sleeve (904), and the output ends of the two electric telescopic rods (905) are both fixedly connected to arc-shaped fixing heads (906).

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