Fixture for suspension arm of gantry crane

Abstract

The utility model discloses a clamp for a suspension arm of a gantry crane, which relates to the technical field of clamps and comprises a fixed seat, the top of the fixed seat is fixedly connected with a seat stand, the top of the seat stand is fixedly connected with a support, the top of the support is provided with a suspension arm main body, the bottom of the suspension arm is fixedly connected with a connecting column, and the connecting column is fixedly connected with a connecting rod. According to the utility model, the motor is driven to be matched with the threaded rod, the threaded sleeve, the L-shaped connecting strip, the fixing plate and other components in the fixing device, so that the threaded rod rotates clockwise to drive the threaded sleeve to move downwards on the limiting rod, and the threaded sleeve moves downwards to drive the L-shaped connecting strip to move downwards; the L-shaped connecting strip moves downwards to drive the fixing plate to move downwards, the fixing plate moves downwards to fix the top of an object, and the fixing effect is achieved, so that when the object moves, the safety of the object can be guaranteed, the object cannot shake, the hoisting efficiency is improved, and the operation safety is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of clamping technology, and in particular relates to a clamping device for the boom of a gantry crane. Background Technology

[0002] Gantry cranes are a type of loading and unloading equipment widely used in ports and shipyards, mainly for loading and unloading bulk cargo, containers and other materials.

[0003] According to the public notice of the clamp for the boom of a gantry crane (publication number: CN 203624850U), the boom includes a first base plate in the shape of an "L", a second base plate disposed on the short side of the "L" shape, and a third base plate disposed on the long side of the "L" shape. Multiple first through holes are provided on the short side of the "L" shape, and a second through hole is provided on the second base plate. The clamp is used to fix the first base plate, the second base plate, and the third base plate. The clamp includes a first bracket, a second bracket, and a third bracket. The second and third brackets are fixedly disposed on the first bracket. The first bracket is provided with a first positioning component that passes through the first through hole. The first bracket abuts against the second base plate. The second and third brackets are generally in the shape of an "L". The second bracket is in close contact with the second base plate. The second bracket is provided with a second positioning component that passes through the second through hole. The third bracket is used to support the third base plate, and bolts are also provided on the third bracket to limit the sliding of the third base plate.

[0004] However, in the above application, the cooperation of components such as the second base plate, the first base plate, the third base plate, the first through hole, and the first bracket makes it difficult to fully fix and clamp the object during the hoisting and moving process. This causes the object to sway during hoisting and moving, which may cause the object to fall from a height. This does not guarantee the safety of the object and the person, and reduces the efficiency of hoisting. It needs to be improved. Utility Model Content

[0005] The purpose of this utility model is to provide a clamp for the boom of a gantry crane. Through a motor drive and the cooperation of components such as a threaded rod, threaded sleeve, L-shaped connecting strip, and fixing plate inside the fixing device, the clockwise rotation of the threaded rod causes the threaded sleeve to move downwards on a limit rod. The downward movement of the threaded sleeve causes the L-shaped connecting strip to move downwards, which in turn causes the fixing plate to move downwards. The downward movement of the fixing plate then secures the top of the object, achieving a fixing effect. This ensures the safety of the object during movement, prevents it from swaying, improves lifting efficiency, guarantees operational safety, and solves existing problems.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a clamp for the boom of a gantry crane, including a fixed base, a platform fixedly connected to the top of the fixed base, a bracket fixedly connected to the top of the platform, a boom body set on the top of the bracket, a connecting column fixedly connected to the bottom of the boom, a U-shaped frame fixedly connected to the bottom of the connecting column, and a fixing device set on the top of the U-shaped frame.

[0008] The fixing device includes an L-shaped support plate, the bottom of which is fixedly connected to the top of the U-shaped frame. A motor is fixedly connected to the bottom of the L-shaped support plate, and a threaded rod is fixedly connected to the output end of the motor. A threaded sleeve is threadedly connected to the circumferential surface of the threaded rod, and an L-shaped connecting strip is fixedly connected to the side of the threaded sleeve. A fixing plate is fixedly connected to the bottom of the L-shaped connecting strip.

[0009] Furthermore, a limiting rod is fixedly connected to the upper bottom of the L-shaped support plate, the bottom of the limiting rod passes through the bottom of the threaded sleeve, and the side of the threaded sleeve is slidably connected to the circumferential surface of the limiting rod. The limiting rod is used to restrict the movement trajectory of the threaded sleeve.

[0010] Furthermore, a limiting disc is fixedly connected to the bottom of the limiting rod, and a limiting plate is fixedly connected to the bottom of the threaded rod. The limiting disc is to prevent the threaded sleeve from falling off the limiting rod, and the limiting plate is to prevent the threaded sleeve from falling off the threaded rod.

[0011] Furthermore, a thrust plate is fixedly connected to the side of the threaded sleeve, and a placement plate is fixedly connected to the bottom of the U-shaped frame. The thrust plate is used to contact the force-bearing rod, causing the force-bearing rod to retract and the hydraulic rod to extend. The placement plate is used to place objects.

[0012] Furthermore, a clamping device is provided on the side of the U-shaped frame. The clamping device includes an L-shaped hydraulic cylinder. The side of the L-shaped hydraulic cylinder is fixedly connected to the side of the U-shaped frame. One end of the L-shaped hydraulic cylinder is slidably connected to a force-bearing rod via a piston. The other end of the L-shaped hydraulic cylinder is slidably connected to a hydraulic rod via another piston. A connecting plate is fixedly connected to the side of the hydraulic rod. A clamping plate is fixedly connected to the side of the connecting plate. The connecting plate is for connecting the clamping plate so that the clamping plate can move. The clamping plate is for clamping objects.

[0013] Furthermore, a return spring is fixedly connected to the side of the L-shaped hydraulic cylinder. One end of the return spring is fixedly connected to the side of the connecting plate. The return spring is used to reset the hydraulic rod and the force rod, and can be reused repeatedly.

[0014] Furthermore, the force-bearing rod is located below the thrust plate, and the top of the force-bearing rod is located on the displacement trajectory of the bottom of the thrust plate. When the thrust plate moves, it will touch the force-bearing rod, causing the force-bearing rod to retract.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model utilizes a motor drive and internal components such as a threaded rod, threaded sleeve, L-shaped connecting strip, and fixing plate within the fixing device to achieve a clockwise rotation of the threaded rod, which in turn causes the threaded sleeve to move downwards on the limiting rod. The downward movement of the threaded sleeve causes the L-shaped connecting strip to move downwards, which in turn causes the fixing plate to move downwards. The downward movement of the fixing plate then secures the top of the object, achieving a fixing effect. This ensures the safety of the object during movement, prevents it from swaying, improves hoisting efficiency, and guarantees operational safety.

[0017] 2. This utility model utilizes a motor drive and the internal components of the clamping device, including an L-shaped hydraulic cylinder, a connecting plate, a clamping plate, and a return spring, to achieve a leftward movement of the hydraulic rod, which in turn drives the connecting plate to move to the left. This leftward movement of the connecting plate, in turn, drives the clamping plate to move to the left, thus clamping and fixing the object. This ensures the object is firmly fixed to the placement plate during movement, achieving a clamping effect. This allows for clamping from both sides of the object, enhancing its safety and improving the fixing effect, preventing accidental errors during lifting and ensuring personal safety.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a three-dimensional overall structural diagram of the fixing device of this utility model;

[0022] Figure 3 This is a three-dimensional overall structural diagram of the clamping device of this utility model;

[0023] Figure 4 For the present utility model Figure 3 A three-dimensional magnified structural diagram of A.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Fixed base; 2. Base; 3. Bracket; 4. Main body of boom; 5. Connecting column; 6. U-shaped frame; 7. Fixing device; 71. L-shaped support plate; 72. Motor; 73. Threaded rod; 74. Threaded sleeve; 75. L-shaped connecting strip; 76. Fixing plate; 77. Limiting rod; 78. Limiting disc; 79. Limiting plate; 710. Thrust plate; 711. Placement plate; 8. Clamping device; 81. L-shaped hydraulic cylinder; 82. Force rod; 83. Hydraulic rod; 84. Connecting plate; 85. Clamping plate; 86. Return spring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-4 This utility model is a clamp for the boom of a gantry crane, including a fixed seat 1, a base 2 fixedly connected to the top of the fixed seat 1, a bracket 3 fixedly connected to the top of the base 2, a boom body 4 set on the top of the bracket 3, a connecting column 5 fixedly connected to the bottom of the boom, a U-shaped frame 6 fixedly connected to the bottom of the connecting column 5, and a fixing device 7 set on the top of the U-shaped frame 6.

[0028] The fixing device 7 includes an L-shaped support plate 71. The bottom of the L-shaped support plate 71 is fixedly connected to the top of the U-shaped frame 6. A motor 72 is fixedly connected to the bottom of the L-shaped support plate 71. A threaded rod 73 is fixedly connected to the output end of the motor 72. A threaded sleeve 74 is threadedly connected to the circumferential surface of the threaded rod 73. An L-shaped connecting strip 75 is fixedly connected to the side of the threaded sleeve 74. A fixing plate 76 is fixedly connected to the bottom of the L-shaped connecting strip 75.

[0029] The upper bottom of the L-shaped support plate 71 is fixedly connected to a limiting rod 77. The bottom of the limiting rod 77 passes through the bottom of the threaded sleeve 74. The side of the threaded sleeve 74 is slidably connected to the circumferential surface of the limiting rod 77. The limiting rod 77 is used to restrict the movement trajectory of the threaded sleeve 74.

[0030] The bottom of the limiting rod 77 is fixedly connected to the limiting plate 78, and the bottom of the threaded rod 73 is fixedly connected to the limiting plate 79. The limiting plate 78 is to prevent the threaded sleeve 74 from falling off the limiting rod 77, and the limiting plate 79 is to prevent the threaded sleeve 74 from falling off the threaded rod 73.

[0031] A thrust plate 710 is fixedly connected to the side of the threaded sleeve 74, and a placement plate 711 is fixedly connected to the bottom of the U-shaped frame 6. The thrust plate 710 is used to touch the force rod 82, causing the force rod 82 to retract and the hydraulic rod 83 to extend. The placement plate 711 is used to place objects.

[0032] The side of the U-shaped frame 6 is provided with a clamping device 8, which includes an L-shaped hydraulic cylinder 81. The side of the L-shaped hydraulic cylinder 81 is fixedly connected to the side of the U-shaped frame 6. One end of the L-shaped hydraulic cylinder 81 is slidably connected to a force rod 82 through a piston. The other end of the L-shaped hydraulic cylinder 81 is slidably connected to a hydraulic rod 83 through another piston. A connecting plate 84 is fixedly connected to the side of the hydraulic rod 83. A clamping plate 85 is fixedly connected to the side of the connecting plate 84. The connecting plate 84 is for connecting the clamping plate 85 so that the clamping plate 85 can move. The clamping plate 85 is for clamping objects.

[0033] A return spring 86 is fixedly connected to the side of the L-shaped hydraulic cylinder 81. One end of the return spring 86 is fixedly connected to the side of the connecting plate 84. The return spring 86 is used to reset the hydraulic rod 83. The force rod 82 can also be reset and can be reused repeatedly.

[0034] The force-bearing rod 82 is located below the thrust plate 710, and the top of the force-bearing rod 82 is located on the displacement trajectory of the bottom of the thrust plate 710. When the thrust plate 710 moves, it will touch the force-bearing rod 82, causing the force-bearing rod 82 to retract.

[0035] A specific application of this embodiment is as follows: When an object is on the placement plate 711, the user needs to move the object using the main body of the boom 4. To ensure that the object does not sway during the movement, it is necessary to fix the object to ensure its safety. The user uses the fixing device 7 and starts the motor 72. The motor 72 drives the threaded rod 73 to rotate clockwise. The clockwise rotation of the threaded rod 73 will drive the threaded sleeve 74 to move downward on the limit rod 77. The downward movement of the threaded sleeve 74 will drive the L-shaped connecting strip 75 to move downward. The downward movement of the L-shaped connecting strip 75 will drive the fixing plate 76 to move downward. The downward movement of the fixing plate 76 will fix the top of the object, so that the object will not sway during the movement.

[0036] As the object moves, it is clamped on both sides, making it more secure and enhancing its safety. The better the fixation effect, the less likely the object will fall off the placement plate 711 during movement, ensuring personal safety. When using the fixing device 7, the user simultaneously uses the clamping device 8. The user starts the motor 72, which drives the threaded rod 73 to rotate clockwise. The clockwise rotation of the threaded rod 73 causes the threaded sleeve 74 to move downward on the limit rod 77. The downward movement of the threaded rod 73 causes the push plate 710 to move downward. The downward movement of the rod 0 pushes the force rod 82 on the L-shaped hydraulic cylinder 81, causing the force rod 82 to move inside the L-shaped hydraulic cylinder 81. When the force rod 82 moves inside the L-shaped hydraulic cylinder 81, the hydraulic rod 83 will extend outward due to the force of the force rod 82 moving inside the L-shaped hydraulic cylinder 81, causing the hydraulic rod 83 to move to the left. The leftward movement of the hydraulic rod 83 will drive the connecting plate 84 to move to the left. The leftward movement of the connecting plate 84 will drive the clamping plate 85 to move to the left. The leftward movement of the clamping plate 85 will clamp and fix the object, so that the object can be firmly fixed on the placement plate 711 during the movement.

[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is 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.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A clamp for the boom of a gantry crane, comprising a fixed base (1), characterized in that: The top of the fixed seat (1) is fixedly connected to the base (2), the top of the base (2) is fixedly connected to the bracket (3), the top of the bracket (3) is provided with the main body of the boom (4), the bottom of the boom is fixedly connected to the connecting column (5), the bottom of the connecting column (5) is fixedly connected to the U-shaped frame (6), and the top of the U-shaped frame (6) is provided with the fixing device (7). The fixing device (7) includes an L-shaped support plate (71), the bottom of which is fixedly connected to the top of the U-shaped frame (6). A motor (72) is fixedly connected to the upper bottom of the L-shaped support plate (71). A threaded rod (73) is fixedly connected to the output end of the motor (72). A threaded sleeve (74) is threadedly connected to the circumferential surface of the threaded rod (73). An L-shaped connecting strip (75) is fixedly connected to the side of the threaded sleeve (74). A fixing plate (76) is fixedly connected to the bottom of the L-shaped connecting strip (75).

2. The clamp for the boom of a gantry crane according to claim 1, characterized in that, The upper bottom of the L-shaped support plate (71) is fixedly connected to a limiting rod (77), the bottom of the limiting rod (77) passes through the bottom of the threaded sleeve (74), and the side of the threaded sleeve (74) is slidably connected to the circumferential surface of the limiting rod (77).

3. The clamp for the boom of a gantry crane according to claim 2, characterized in that, The bottom of the limiting rod (77) is fixedly connected to the limiting plate (78), and the bottom of the threaded rod (73) is fixedly connected to the limiting plate (79).

4. The clamp for the boom of a gantry crane according to claim 1, characterized in that, A thrust plate (710) is fixedly connected to the side of the threaded sleeve (74), and a placement plate (711) is fixedly connected to the bottom of the U-shaped frame (6).

5. A clamp for the boom of a gantry crane according to claim 1, characterized in that, The side of the U-shaped frame (6) is provided with a clamping device (8), which includes an L-shaped hydraulic cylinder (81). The side of the L-shaped hydraulic cylinder (81) is fixedly connected to the side of the U-shaped frame (6). One end of the L-shaped hydraulic cylinder (81) is slidably connected to a force rod (82) via a piston. The other end of the L-shaped hydraulic cylinder (81) is slidably connected to a hydraulic rod (83) via another piston. The side of the hydraulic rod (83) is fixedly connected to a connecting plate (84), and the side of the connecting plate (84) is fixedly connected to a clamping plate (85).

6. A clamp for the boom of a gantry crane according to claim 5, characterized in that, A return spring (86) is fixedly connected to the side of the L-shaped hydraulic cylinder (81), and one end of the return spring (86) is fixedly connected to the side of the connecting plate (84).

7. A clamp for the boom of a gantry crane according to claim 5, characterized in that, The force-bearing rod (82) is located below the thrust plate (710), and the top of the force-bearing rod (82) is located on the displacement trajectory of the bottom of the thrust plate (710).

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