Anti-corrosion crown block grab bucket

Abstract

The utility model relates to the technical field of crown block grab buckets, and discloses an anti-corrosion crown block grab bucket. The anti-corrosion crown block grab bucket comprises a hanging ring, a connecting shaft is installed on the lower portion of the hanging ring in a penetrating mode, a connecting frame is installed on the lower portion of the connecting shaft in a penetrating mode, a hydraulic piston is installed on the lower portion of the connecting frame in a penetrating mode, and fixing frames are fixedly installed on the front side and the rear side of the connecting frame; a connecting block is movably installed in the center of the fixing frame, a connecting column is fixedly installed at the lower end of a hydraulic piston, the bottom end of the connecting column is fixedly connected with a movable block, the connecting column is made of stainless steel, and after the hydraulic piston extends to adjust the position of the movable block and enable the grab bucket to be opened, the crown block adjusts the position of the grab bucket to enable the grab bucket to be submerged in water. The connecting column can prevent the lower end of the hydraulic piston from being immersed in water and being corroded by slag flushing water, meanwhile, the connecting pipe and the grab bucket are made of stainless steel, and the service life of the grab bucket and the connecting pipe can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of overhead crane grabs, in particular to an anti-corrosion overhead crane grab. Background Technique

[0002] A grab is a special tool for a crane to grab dry bulk goods. It consists of two or more openable and closable bucket-shaped jaw plates that form a material-containing space together. When loading, the jaw plates are closed in the material pile, and the material is grabbed into the material-containing space. When unloading, the jaw plates are opened in a suspended state on the material pile, and the material falls on the material pile. The opening and closing of the jaw plates are generally controlled by the steel wire rope of the crane hoisting mechanism. Grab operation does not involve heavy physical labor, can achieve high loading and unloading efficiency and ensure safety, and is the main dry bulk cargo loading and unloading tool in ports.

[0003] The existing Chinese utility model patent with the reference publication number of CN215886051U discloses a grab with good corrosion resistance, especially in the field of grabs. It aims to solve the problem of poor corrosion resistance in the prior art. It includes: a grab main body, an anti-wear layer is arranged on the surface of the grab main body, an anti-corrosion layer is arranged on the side of the anti-wear layer away from the grab main body, an anti-rust layer is arranged on the side of the anti-corrosion layer away from the grab main body. The anti-wear layer includes a tungsten steel layer, and a manganese steel layer is arranged on the surface of the tungsten steel layer. The thickness of the tungsten steel layer is less than that of the manganese steel layer. The anti-corrosion layer includes a molybdenum plating layer, and a nickel plating layer is arranged on the surface of the molybdenum plating layer. The thickness of the molybdenum plating layer is the same as that of the nickel plating layer. Compared with the original grab, this device has solved the problems of the existing grab with poor corrosion resistance. When people use the grab for a long time, it is easy to corrode and rust, resulting in a reduction in the use intensity of the grab, causing rust through holes to appear, affecting its service life, and being inconvenient for people to use.

[0004] The water slag grab of the overhead crane is immersed in the slag flushing water for a long time during the slag grabbing process. The pulley assembly and the steel wire rope are eroded by the slag water, and the service life is short. At the same time, the existing overhead crane grab controls the opening and closing of the grab by winding the steel cable with a motor. When maintaining and replacing the steel cable, it is necessary to first cancel the connection of the steel cable, then draw out the steel cable, then fix the new steel cable to the winding structure, and finally connect the other end of the steel cable to the grab. The operation is cumbersome and very inconvenient. Content of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides an anti-corrosion overhead crane grab, which has the advantages of increasing the service life and being convenient for maintenance, and solves the above technical problems.

[0007] (II) Technical Solutions

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-corrosion overhead crane grab bucket, comprising: a hanging ring, a connecting shaft is inserted and installed below the hanging ring, a connecting frame is inserted and installed below the connecting shaft, a hydraulic piston is inserted and installed below the connecting frame, a fixing frame is fixedly installed on the front and rear sides of the connecting frame, a connecting block is movably installed at the center of the fixing frame, a long axis bolt is inserted and installed at the center of the fixing frame, a nut is inserted and installed at the end of the long axis bolt, a connecting pipe is fixedly installed below the connecting block, a connecting column is fixedly installed at the lower end of the hydraulic piston, a movable block is fixedly installed below the connecting column, a limiting shaft is inserted and installed inside the movable block, a grab bucket is movably installed below the limiting shaft, gaskets are movably installed at both ends of the limiting shaft, a fixing bolt is inserted and installed at the center of the gasket, bucket teeth are fixedly installed below the grab bucket, and a transfer block is fixedly installed above the grab bucket; the connecting frame can limit the position of the hydraulic piston.

[0009] As the preferred technical solution of the utility model, the connecting shaft is symmetrically installed on the front and rear sides of the hanging ring with the center of the hanging ring as the reference, and the hanging ring is fixedly connected to the connecting frame through the connecting shaft; the hanging ring can be easily connected to the overhead travelling crane.

[0010] As a preferred technical solution of the utility model, the hydraulic piston is installed on the left and right sides of the connecting frame symmetrically with the center of the connecting frame as a reference, and the fixed frame is installed on the left and right ends of the front and rear sides of the connecting frame in a front-to-back mirror-symmetrical manner with the center of the connecting frame as a reference; the hydraulic piston can facilitate the adjustment of the position of the movable block.

[0011] As a preferred technical solution of the utility model, the long-axis bolt passes through the fixing frame, the connecting block and the nut, the connecting block is rotationally connected to the fixing frame through the long-axis bolt, the connecting block is mirror-symmetrically installed at the upper and lower ends of the connecting pipe, and the connecting pipe is made of 302 stainless steel; the long-axis bolt and the nut can limit the relative position between the connecting block and the fixing frame.

[0012] As the preferred technical solution of the utility model, the movable block is fixedly connected to the hydraulic piston through a connecting column, the limiting shaft passes through the upper end of the grab and the movable block, and the grab is rotatably connected to the movable block through the limiting shaft; the movable block can adjust the rotation angle of the grab.

[0013] As the preferred technical solution of the utility model, the grab is made of 302 stainless steel, and is installed at both ends of the limit shaft on the front and rear sides of the movable block in a mirror-symmetrical manner with the center of the movable block as the reference, and the fixing bolt passes through the gasket and is connected to the limit shaft; the fixing bolt can limit the relative position between the gasket and the limit shaft.

[0014] As a preferred technical solution of the present utility model, the adapter blocks are symmetrically installed on the upper end of the grab arc surface structure on the left and right. The adapter blocks are rotationally connected to the connection block at the lower end of the connecting pipe through long shaft bolts and nuts; the adapter blocks can facilitate the rotational connection between the grab and the connection block at the lower end of the connecting pipe.

[0015] Compared with the prior art, the present utility model provides an anti-corrosion overhead crane grab, which has the following beneficial effects:

[0016] 1. Through the setting of the connecting column in the present utility model, the connecting column is fixedly installed at the lower end of the hydraulic piston. The bottom end of the connecting column is fixedly connected to the movable block. The material of the connecting column is 302 stainless steel. When the hydraulic piston extends to adjust the position of the movable block and the grab opens, the overhead crane adjusts the position of the grab so that the grab is immersed in water. The connecting column can prevent the lower end of the hydraulic piston from being immersed in water, resulting in the corrosion of the lower end of the hydraulic piston by the slag flushing water. At the same time, the materials of the connecting pipe and the grab are 302 stainless steel, which can increase the service life of the grab and the connecting pipe.

[0017] 2. Through the setting of the hydraulic piston in the present utility model, the hydraulic pistons are symmetrically installed on the left and right sides of the connecting frame with the center of the connecting frame as the reference. The bottom end of the hydraulic piston is fixedly connected to the movable block through the connecting column. When the hydraulic piston extends, it will drive the movable block to move downward. Since the upper end of the grab is rotationally connected to the movable block through the limit shaft, the adapter blocks are symmetrically installed on the upper end of the grab arc surface structure on the left and right, and the adapter blocks are rotationally connected to the connection block at the lower end of the connecting pipe through long shaft bolts and nuts. During the downward movement of the movable block, the grab will rotate to increase the distance at the bottom end of the grab. This method cancels the method of using a motor to drive the steel cable to control the opening and closing of the grab. During maintenance, only the replaced hydraulic piston needs to be replaced, reducing the steps required for maintenance and facilitating maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the installation structure of the connecting pipe of the present utility model;

[0020] Figure 3 is a schematic diagram of the installation structure of the connecting column of the present utility model;

[0021] Figure 4 is a schematic diagram of the connection structure between the connecting pipe and the grab of the present utility model;

[0022] Wherein: 1. hanging ring; 11. connecting shaft; 12. connecting frame; 13. hydraulic piston; 14. fixing frame; 15. connecting block; 16. long shaft bolt; 17. nut; 18. connecting pipe; 2. connecting column; 21. movable block; 22. limiting shaft; 23. grab bucket; 24. gasket; 25. fixing bolt; 26. bucket tooth; 27. adapter block. Specific embodiments

[0023] The following further describes in detail the embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0024] In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Please refer to Figure 1 - Figure 4 , in this embodiment, an anti-corrosion overhead crane grab bucket includes: a hanging ring 1, a connecting shaft 11 is inserted and installed below the hanging ring 1, a connecting frame 12 is inserted and installed below the connecting shaft 11, a hydraulic piston 13 is inserted and installed below the connecting frame 12, fixing frames 14 are fixedly installed on the front and rear sides of the connecting frame 12, a connecting block 15 is movably installed at the center of the fixing frame 14, a long shaft bolt 16 is inserted through the center of the fixing frame 14, a nut 17 is inserted and installed at the end of the long shaft bolt 16, and a connecting pipe 18 is fixedly installed below the connecting block 15.

[0027] The connecting shaft 11 is symmetrically installed on the front and rear sides of the hanging ring 1 with the center of the hanging ring 1 as the reference, and a fixed connection is formed between the hanging ring 1 and the connecting frame 12 through the connecting shaft 11.

[0028] The hydraulic piston 13 is installed symmetrically on the left and right sides of the connecting frame 12 with the center of the connecting frame 12 as the reference, and the fixing frame 14 is installed symmetrically on the left and right ends of the front and rear sides of the connecting frame 12 with the center of the connecting frame 12 as the reference.

[0029] The long axis bolt 16 passes through the fixing frame 14, the connecting block 15 and the nut 17, the connecting block 15 is rotatably connected with the fixing frame 14 through the long axis bolt 16, and the connecting block 15 is installed at the upper and lower ends of the connecting pipe 18 in a mirror-symmetrical manner. The material of the connecting pipe 18 is 302 stainless steel.

[0030] Specifically, the hanging ring 1 can be easily connected to the overhead crane, the connecting shaft 11 can facilitate the fixed connection between the hanging ring 1 and the connecting frame 12, the connecting frame 12 can limit the position of the hydraulic piston 13, the hydraulic piston 13 can facilitate the adjustment of the position of the movable block 21, the fixed frame 14 can limit the position of the connecting block 15, the connecting block 15 can limit the positions of the upper and lower ends of the connecting pipe 18, and the long axis bolt 16 and the nut 17 can limit the relative position between the connecting block 15 and the fixed frame 14.

[0031] A connecting column 2 is fixedly installed at the lower end of the hydraulic piston 13, a movable block 21 is fixedly installed below the connecting column 2, a limiting shaft 22 is inserted inside the movable block 21, a grab bucket 23 is movably installed below the limiting shaft 22, gaskets 24 are movably installed at both ends of the limiting shaft 22, a fixing bolt 25 is inserted in the center of the gasket 24, a bucket tooth 26 is fixedly installed below the grab bucket 23, and a transfer block 27 is fixedly installed above the grab bucket 23.

[0032] The movable block 21 is fixedly connected to the hydraulic piston 13 via the connecting column 2 , the limiting shaft 22 penetrates the upper end of the grab bucket 23 and the movable block 21 , and the grab bucket 23 is rotatably connected to the movable block 21 via the limiting shaft 22 .

[0033] The grab bucket 23 is made of 302 stainless steel. The grab bucket 23 is installed at both ends of the limit shaft 22 on the front and rear sides of the movable block 21 in a mirror-symmetrical manner with the center of the movable block 21 as the reference. The fixing bolt 25 passes through the gasket 24 and is connected to the limit shaft 22.

[0034] The adapter block 27 is installed symmetrically on the upper end of the arc surface structure of the grab bucket 23. The adapter block 27 is rotatably connected to the connecting block 15 at the lower end of the connecting pipe 18 through the long axis bolt 16 and the nut 17.

[0035] Specifically, the connecting column 2 can prevent the lower end of the hydraulic piston 13 from entering the water. The movable block 21 can adjust the rotation angle of the grab bucket 23. The limiting shaft 22 can limit the position of the grab bucket 23. The gasket 24 can prevent the limiting shaft 22 from slipping off. The fixing bolt 25 can limit the relative position between the gasket 24 and the limiting shaft 22. The bucket teeth 26 can facilitate the grab bucket 23 to grab water slag. The adapter block 27 can facilitate the formation of a rotational connection between the grab bucket 23 and the connection block 15 at the lower end of the connecting pipe 18.

[0036] During use, the connecting column 2 is fixedly installed at the lower end of the hydraulic piston 13. The bottom end of the connecting column 2 is fixedly connected to the movable block 21. The material of the connecting column 2 is 302 stainless steel. After the hydraulic piston 13 extends to adjust the position of the movable block 21 and the grab bucket 23 is opened, the overhead crane adjusts the position of the grab bucket 23 to immerse the grab bucket 23 in the water. The connecting column 2 can prevent the lower end of the hydraulic piston 13 from being immersed in the water, which may cause the lower end of the hydraulic piston 13 to be corroded by the slag washing water. At the same time, the materials of the connecting pipe 18 and the grab bucket 23 are 302 stainless steel, which can increase the service life of the grab bucket 23 and the connecting pipe 18. The hydraulic pistons 13 are symmetrically installed on the left and right sides of the connecting frame 12 with the center of the connecting frame 12 as the reference. The bottom end of the hydraulic piston 13 is fixedly connected to the movable block 21 through the connecting column 2. When the hydraulic piston 13 extends, it will drive the movable block 21 to move downward. Since the upper end of the grab bucket 23 is rotationally connected to the movable block 21 through the limiting shaft 22, the adapter blocks 27 are symmetrically installed on the upper end of the arc surface structure of the grab bucket 23. The adapter blocks 27 are rotationally connected to the connection block 15 at the lower end of the connecting pipe 18 through long shaft bolts 16 and nuts 17. During the downward movement of the movable block 21, the grab bucket 23 will rotate to increase the distance at the bottom end of the grab bucket 23. This method cancels the method of using a motor to drive a steel cable to control the opening and closing of the grab bucket 23. During maintenance, only the replaced hydraulic piston 13 needs to be replaced, reducing the steps required for maintenance and facilitating maintenance.

[0037] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-corrosion overhead crane grab, characterized in that, include: A hanging ring (1), a connecting shaft (11) is inserted and installed below the hanging ring (1), a connecting frame (12) is inserted and installed below the connecting shaft (11), a hydraulic piston (13) is inserted and installed below the connecting frame (12), a fixing frame (14) is fixedly installed on both sides of the front and rear of the connecting frame (12), a connecting block (15) is movably installed at the center of the fixing frame (14), a long axis bolt (16) is inserted and installed at the center of the fixing frame (14), a nut (17) is inserted and installed at the end of the long axis bolt (16), and a fixing frame (15) is fixedly installed below the connecting block (15). A connecting pipe (18), a connecting column (2) is fixedly installed at the lower end of the hydraulic piston (13), a movable block (21) is fixedly installed below the connecting column (2), a limiting shaft (22) is inserted and installed inside the movable block (21), a grab bucket (23) is movably installed below the limiting shaft (22), gaskets (24) are movably installed at both ends of the limiting shaft (22), a fixing bolt (25) is inserted and installed at the center of the gasket (24), a bucket tooth (26) is fixedly installed below the grab bucket (23), and a transfer block (27) is fixedly installed above the grab bucket (23).

2. The anti-corrosion overhead crane grab bucket according to claim 1, characterized in that: The connecting shaft (11) is symmetrically installed on the front and rear sides of the hanging ring (1) with the center of the hanging ring (1) as a reference, and the hanging ring (1) is fixedly connected to the connecting frame (12) through the connecting shaft (11).

3. The anti-corrosion overhead crane grab bucket according to claim 1, characterized in that: The hydraulic piston (13) is symmetrically mounted on the left and right sides of the connecting frame (12) with the center of the connecting frame (12) as a reference, and the fixing frame (14) is symmetrically mounted on the left and right ends of the front and rear sides of the connecting frame (12) with the center of the connecting frame (12) as a reference.

4. The anti-corrosion overhead crane grab bucket according to claim 1, characterized in that: The long axis bolt (16) passes through the fixing frame (14), and the connecting block (15) is connected with the nut (17). The connecting block (15) is rotatably connected with the fixing frame (14) through the long axis bolt (16). The connecting block (15) is installed at the upper and lower ends of the connecting pipe (18) in a mirror-symmetrical manner. The material of the connecting pipe (18) is 302 stainless steel.

5. The anti-corrosion overhead crane grab bucket according to claim 1, characterized in that: The movable block (21) is fixedly connected to the hydraulic piston (13) via a connecting column (2); the limiting shaft (22) passes through the upper end of the grab bucket (23) and the movable block (21); and the grab bucket (23) is rotatably connected to the movable block (21) via the limiting shaft (22).

6. The anti-corrosion overhead crane grab bucket according to claim 1, characterized in that: The material of the grab bucket (23) is 302 stainless steel. The grab bucket (23) is symmetrically installed on both ends of the limit shaft (22) on the front and rear sides of the movable block (21) with the center of the movable block (21) as the reference, and the fixing bolt (25) passes through the gasket (24) and is connected to the limit shaft (22).

7. The anti-corrosion overhead crane grab bucket according to claim 1, characterized in that: The adapter block (27) is symmetrically installed on the upper end of the arc surface structure of the grab bucket (23), and a rotational connection is formed between the adapter block (27) and the connection block (15) at the lower end of the connecting pipe (18) through the long shaft bolt (16) and the nut (17).

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