A large tank body loading and unloading mechanism for a travelling crane

Abstract

The utility model provides a kind of loading and unloading mechanism of large tank for travelling crane, including loading and unloading control seat, the both sides of loading and unloading control seat are slidably provided with slide column, the end of slide column away from loading and unloading control seat is fixedly provided with fixed part, the side of fixed part close to the vertical center of loading and unloading control seat is fixedly provided with connecting piece, the lower surface of connecting piece is fixedly provided with loading and unloading seat. Through the loading and unloading mechanism of large tank for travelling crane described in the utility model, the tank can be wrapped in multiple points and multiple directions during use, and the clamping method in steps and multiple points allows the force to be evenly distributed on the surface of the tank, effectively avoiding the deformation of the tank or the damage to the surface coating caused by local stress concentration of the traditional lifting appliance. It is especially suitable for safe hoisting of large or thin-walled tanks, and realizes high automation operation from tank alignment to clamping and moving, which effectively speeds up the material turnover speed.

Description

Technical Field

[0001] This utility model belongs to the technical field of overhead crane equipment, and specifically relates to a loading and unloading mechanism for large tanks used in overhead cranes. Background Technology

[0002] Overhead cranes (bridge cranes) are used for loading and unloading large tanks, which is a typical and demanding industrial operation. Large tanks are usually characterized by their large weight, large volume, high center of gravity, and easily deformable shells. Therefore, their loading and unloading mechanisms need to be specially designed to ensure safety, efficiency, and avoid damage to the tanks.

[0003] Existing overhead cranes for loading and unloading large tanks typically use highly flexible, non-destructive braided loop slings (circular slings) instead of steel wire ropes. This is because slings are softer, won't cut the tank's paint or substrate like steel wire ropes, and are easier to wind up. Four-legged or two-legged lifting methods are used. By adjusting the sling length, the tank's tilt angle can be controlled, facilitating installation. Two or more slings are lowered from the lifting beam, wrapped around specific lifting lugs or supports at both ends of the tank, and then hooked back onto the lifting beam hooks to form a closed loop. The crane then vertically lifts the lifting beam to smoothly lift the tank. However, in actual use, traditional operations rely on cumbersome and time-consuming manual traction and binding. For stations or production lines that frequently handle tanks, the lifting process is cumbersome and inefficient. Utility Model Content

[0004] In view of this, this utility model addresses the shortcomings of the prior art by providing a loading and unloading mechanism for large tanks using a gantry crane. During use, the mechanism can wrap the tank at multiple points and in multiple directions. This step-by-step, multi-point clamping method ensures that the force is evenly distributed on the surface of the tank, effectively avoiding tank deformation or surface coating damage that may occur due to localized stress concentration in traditional lifting tools. It is particularly suitable for the safe lifting and transport of large or thin-walled tanks, achieving a high degree of automation from tank alignment to clamping and transfer, and effectively accelerating material turnover.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a loading and unloading mechanism for a large tank for overhead crane, including a loading and unloading control seat, sliding columns are slidably arranged on both sides of the loading and unloading control seat, a fixing member is fixedly arranged at the end of the sliding column away from the loading and unloading control seat, a connecting member is fixedly arranged on the side of the fixing member close to the vertical center of the loading and unloading control seat, and a loading and unloading seat is fixedly arranged on the lower surface of the connecting member. The loading and unloading base has two rotating rods symmetrically distributed around its vertical center. Each rotating rod has a clamping frame fixed between its upper and lower ends. Multiple vertically evenly distributed clamping blocks are fixed on the side of the loading and unloading base near the vertical center of the loading and unloading control seat.

[0006] As a further improvement of this utility model, worm gears are fixedly sleeved on the outer arc surface of the rotating rods. Two worms symmetrically distributed around the vertical center of the loading / unloading seat are rotatably arranged inside each loading / unloading seat, and the worms mesh with adjacent worm gears. A drive box is fixedly arranged on the side of the loading / unloading seat away from the vertical center of the loading / unloading control seat. Two rotating shafts symmetrically distributed around the vertical center of the drive box are rotatably arranged inside each drive box. A bevel gear is fixedly sleeved on the outer arc surface of each rotating shaft. The rotating shafts are fixed to adjacent worms via couplings. A U-shaped seat is fixedly arranged inside each drive box. A linkage rod is rotatably arranged between the U-shaped seat and the adjacent inner wall of the drive box. A bevel gear is fixedly sleeved on the outer arc surface of each linkage rod, and the bevel gear meshes with adjacent bevel gears. A dual-axis motor is arranged inside each U-shaped seat, and the output shaft of the dual-axis motor is fixed to adjacent linkage rods via couplings.

[0007] As a further improvement of this utility model, a U-shaped seat II is provided in the middle of the loading and unloading control seat. An adjusting screw I is rotatably provided between the U-shaped seat II and the inner wall of the adjacent loading and unloading control seat. The adjusting screw I is threadedly connected to the adjacent sliding column. A dual-axis motor II is provided inside the U-shaped seat II. The output shaft of the dual-axis motor II is fixed to the adjacent adjusting screw I through a coupling.

[0008] As a further improvement of this utility model, a connecting seat is fixedly provided on the upper surface of the loading and unloading control seat, and a slide rod is fixedly provided on the upper surface of the connecting seat. The slide rod is slidably disposed inside the slide cylinder. A slide table is fixedly provided at the top of the slide cylinder. The slide table is slidably disposed on the lower side of the drive seat. A slide block is fixedly provided on the upper surface of the drive seat. A support frame is provided on the outer side of the slide block. Two guide rails symmetrically distributed around the vertical center of the support frame are fixedly provided at the upper end of the support frame. The slide block is slidably disposed between the two guide rails. An electric push rod is fixedly provided inside the slide cylinder. The telescopic end of the electric push rod is connected and fixed to the slide column. An adjusting screw is rotatably provided inside the drive seat. The adjusting screw is threadedly connected to the slide block. A servo motor is provided on the outer side of the drive seat. The output shaft of the servo motor is fixed to the adjusting screw through a coupling. An electric push rod is fixedly provided at the upper end of the support frame. The telescopic end of the electric push rod is connected and fixed to the slide block. Positioning holes are provided at the four corners of the lower end of the support frame.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: Firstly, through the coordinated control of electric push rod one, servo motor, and electric push rod two, the loading and unloading control seat is precisely moved in three-dimensional space, thereby driving the loading and unloading seat and its clamping mechanism to smoothly approach the tank from all directions. The clamping mechanism adopts a multi-stage linkage design: First, the dual-axis motor two drives the adjusting screw one, causing the two loading and unloading seats on both sides to move horizontally towards each other, initially clamping the tank from both sides; then, the dual-axis motor one on each loading and unloading seat drives the clamping frame to rotate from the other two directions through bevel gears and worm gears, completing the multi-point and multi-directional coverage of the tank. This step-by-step, multi-point clamping method allows the force to be evenly distributed on the surface of the tank, effectively avoiding tank deformation or surface coating damage caused by local stress concentration that may occur with traditional lifting tools. It is particularly suitable for the safe lifting of large or thin-walled tanks, ensuring the integrity of the equipment from the root.

[0010] Secondly, the process integrates multiple steps such as tank positioning, gripping, transfer, and placement into a coherent automated workflow. By programmatically controlling the sequential actions of various motors and electric push rods, a highly automated operation is achieved from tank alignment to clamping and transport. This significantly reduces the tedious and time-consuming steps of traditional operations, such as manual traction and binding, and greatly shortens the cycle of a single loading and unloading operation. For stations or production lines that require frequent tank handling, this efficiency improvement can effectively accelerate material turnover and reduce equipment waiting time. At the same time, automated operation reduces the number of operators and the labor intensity, helping companies optimize human resource allocation and reduce operational delays caused by the uncertainty of manual operations, demonstrating good overall economic benefits. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0012] Figure 1 This is a schematic diagram of the loading and unloading mechanism for large tanks using a gantry crane according to this utility model; Figure 2 This is a schematic diagram of the internal cross-sectional structure of the loading and unloading mechanism for large tanks using a crane according to this utility model; Figure 3 This is an enlarged structural diagram of point A of the loading and unloading mechanism for the large tank of the overhead crane of this utility model; Figure 4 This is a schematic diagram of the planar structure of the loading and unloading mechanism for large tanks used in the overhead crane of this utility model.

[0013] In the diagram: 101, support frame; 102, positioning hole; 103, guide rail; 104, slide block; 105, drive seat; 106, slide table; 107, slide cylinder; 108, slide rod; 109, connecting seat; 110, loading and unloading control seat; 111, slide column; 112, fixing part; 113, connecting part; 201, loading and unloading seat; 202, rotating rod; 203, clamping frame; 204, clamping block; 205, worm gear; 206, worm; 207, drive box; 208, bevel gear one; 209, U-shaped seat one; 210, bevel gear two; 211, dual-axis motor one; 301, U-shaped seat two; 302, adjusting screw one; 303, dual-axis motor two; 304, electric push rod one; 305, adjusting screw two; 306, servo motor; 307, electric push rod two. Detailed Implementation

[0014] To better understand this utility model, the following embodiments further illustrate its content, but the scope of protection of this utility model is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without one or more of these details.

[0015] like Figure 1 , 2 As shown, it includes a loading and unloading control seat 110. Sliding columns 111 are slidably arranged on both sides of the loading and unloading control seat 110. A fixing member 112 is fixedly arranged at the end of the sliding column 111 away from the loading and unloading control seat 110. A connecting member 113 is fixedly arranged on the side of the fixing member 112 close to the vertical center of the loading and unloading control seat 110. A loading and unloading seat 201 is fixedly arranged on the lower surface of the connecting member 113. The loading and unloading base 201 has two rotating rods 202 symmetrically distributed around the vertical center of the loading and unloading base 201. Each rotating rod 202 has a clamping frame 203 fixed between its upper and lower ends. Multiple vertically evenly distributed clamping blocks 204 are fixedly installed on the side of the loading and unloading base 201 near the vertical center of the loading and unloading control base 110.

[0016] like Figure 2 , 3As shown, worm gears 205 are fixedly sleeved on the outer arc surface of the rotating rod 202. Two worms 206 are rotatably arranged inside the loading / unloading seat 201, symmetrically distributed around the vertical center of the loading / unloading seat 201. The worms 206 mesh with adjacent worm gears 205. A drive box 207 is fixedly installed on the side of the loading / unloading seat 201 away from the vertical center of the loading / unloading control seat 110. Two rotating shafts are rotatably arranged inside the drive box 207, symmetrically distributed around the vertical center of the drive box 207. A bevel gear 20 is fixedly sleeved on the outer arc surface of each rotating shaft. 8. The rotating shaft is fixed to the adjacent worm gear 206 by couplings. U-shaped seats 209 are fixedly installed inside the drive box 207. Linkage rods are rotatably installed between the U-shaped seats 209 and the inner wall of the adjacent drive box 207. The outer arc surface of the linkage rods is fixedly fitted with bevel gears 210. The bevel gears 210 are meshed with the adjacent bevel gears 208. Dual-shaft motors 211 are installed inside the U-shaped seats 209. The output shafts of the dual-shaft motors 211 are fixed to the adjacent linkage rods by couplings.

[0017] like Figure 3 As shown, a U-shaped seat 301 is provided in the middle of the loading and unloading control seat 110. An adjusting screw 302 is rotatably provided between the U-shaped seat 301 and the inner wall of the adjacent loading and unloading control seat 110. The adjusting screw 302 is threadedly connected to the adjacent sliding column 111. A dual-axis motor 303 is provided inside the U-shaped seat 301. The output shaft of the dual-axis motor 303 is fixed to the adjacent adjusting screw 302 through a coupling.

[0018] like Figure 2 , 4 As shown, a connecting seat 109 is fixedly installed on the upper surface of the loading and unloading control seat 110. A slide rod 108 is fixedly installed on the upper surface of the connecting seat 109. The slide rod 108 is slidably installed inside the slide cylinder 107. A slide table 106 is fixedly installed at the top of the slide cylinder 107. The slide table 106 is slidably installed on the lower side of the drive seat 105. A slide block 104 is fixedly installed on the upper surface of the drive seat 105. A support frame 101 is installed on the outer side of the slide block 104. Two guide rails 103 are fixedly installed at the upper end of the support frame 101, symmetrically distributed around the vertical center of the support frame 101. The slide block 104 is slidably installed. Between two guide rails 103; an electric push rod 304 is fixedly installed inside the slide cylinder 107, and the telescopic end of the electric push rod 304 is connected and fixed to the slide column 111. An adjusting screw 305 is rotatably installed inside the drive seat 105, and the adjusting screw 305 is threadedly connected to the slide table 106. A servo motor 306 is installed on the outside of the drive seat 105, and the output shaft of the servo motor 306 is fixed to the adjusting screw 305 through a coupling. An electric push rod 307 is fixedly installed at the upper end of the support frame 101, and the telescopic end of the electric push rod 307 is connected and fixed to the slide seat 104.

[0019] According to another embodiment of the present invention, such as Figure 1 , 2 As shown, positioning holes 102 are provided at the four corners of the lower end of the support frame 101.

[0020] In operation, the electric push rod 304, servo motor 306, and electric push rod 307 are controlled to move. The telescopic end of electric push rod 304 causes the connected slide rod 108 to slide against the slide cylinder 107, which in turn causes the slide rod 108 to raise or lower the loading / unloading control seat 110. The output shaft of servo motor 306 drives the connected adjusting screw 305 to rotate, which in turn causes the slide 106 to slide against the drive seat 105 by adjusting the thread relationship between the adjusting screw 305 and the slide table 106. This causes the slide table 106 to move the loading / unloading control seat 110 through the cooperation of slide rod 108 and slide cylinder 107. 0. Move left or right; the telescopic end of the electric push rod 307 drives the connected slide 104 to slide between the two guide rails 103, thereby causing the telescopic end of the electric push rod 307 to drive the drive seat 105 to move forward or backward, so that the drive seat 105 drives the loading and unloading control seat 110 to move forward or backward through the cooperation of the slide rod 108 and the slide cylinder 107; thereby, through the cooperation of the electric push rod 304, the servo motor 306 and the electric push rod 307, the loading and unloading control seat 110 can be driven to move horizontally and vertically, so that the loading and unloading control seat 110 drives the two loading and unloading seats 201 on its lower side to approach the large tank to be loaded and unloaded; After the loading and unloading control seat 110 moves the two loading and unloading seats 201 on its lower side closer to the large tank to be loaded and unloaded, the dual-shaft motor 2 303 is controlled to run, thereby causing the output shaft of the dual-shaft motor 2 303 to drive the adjusting screw 1 302 connected to it to rotate. Then, by adjusting the thread relationship between the adjusting screw 1 302 and the sliding column 111, the sliding column 111 is driven to move closer to the vertical center of the loading and unloading control seat 110, so that the sliding column 111 drives the loading and unloading seats 201 to move closer to the vertical center of the loading and unloading control seat 110, thereby bringing the loading and unloading seats 201 on both sides closer to the large tank to be loaded and unloaded. The clamping blocks 204 on the loading and unloading seats 201 on both sides are used to clamp and fix the large tank to be loaded and unloaded from the horizontal direction. Then, the dual-axis motor 211 on each loading / unloading seat 201 is controlled to run, thereby causing the output shaft of the dual-axis motor 211 to drive the linkage rod connected to it to rotate, thereby causing the bevel gear 210 on the outer arc surface of the linkage rod to rotate, and then the worm 206 where the bevel gear 208 is located to rotate through the meshing relationship between the bevel gear 210 and the bevel gear 208, thereby causing the rotating rod 202 connected to the worm gear 205 to rotate through the meshing relationship between the worm gear 206 and the worm wheel 205, thereby causing the rotating rod 202 to drive the clamping frame 203 fixed between its ends to rotate towards the large tank, thereby causing the clamping frames 203 on both sides of the two loading / unloading seats 201 to rotate towards the large tank, until the clamping frames 203 on both sides of the two loading / unloading seats 201 provide auxiliary clamping for the large tank; After the two loading and unloading seats 201 are brought close to the large tank at the same time and clamped and fixed, the clamping frames 203 on both sides of each loading and unloading seat 201 are controlled to rotate in the direction of approaching the large tank, so as to assist in clamping the large tank from other directions. After clamping, control the operation of electric push rod 304, servo motor 306 and electric push rod 307 to move the clamped large tank to the designated position.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A loading and unloading mechanism for large tanks used in overhead cranes, comprising a loading and unloading control base (110), characterized in that: The loading and unloading control seat (110) is slidably provided with sliding columns (111) on both sides. The end of the sliding column (111) away from the loading and unloading control seat (110) is fixedly provided with a fixing member (112). The side of the fixing member (112) close to the vertical center of the loading and unloading control seat (110) is fixedly provided with a connecting member (113). The lower surface of the connecting member (113) is fixedly provided with a loading and unloading seat (201). The loading and unloading base (201) is equipped with two rotating rods (202) symmetrically distributed around the vertical center of the loading and unloading base (201). Each rotating rod (202) is fixedly equipped with a clamping frame (203) between its upper and lower ends. Multiple vertically evenly distributed clamping blocks (204) are fixedly installed on the side of the loading and unloading base (201) near the vertical center of the loading and unloading control base (110).

2. The loading and unloading mechanism for large tanks using a gantry crane as described in claim 1, characterized in that: The outer arc surface of the rotating rod (202) is fixedly fitted with worm gears (205), and the loading and unloading seat (201) is rotatably equipped with two worms (206) symmetrically distributed around the vertical center of the loading and unloading seat (201). The worms (206) are respectively meshed with the adjacent worm gears (205).

3. The loading and unloading mechanism for large tanks using a gantry crane as described in claim 2, characterized in that: Each loading and unloading seat (201) is fixedly equipped with a drive box (207) on the side away from the vertical center of the loading and unloading control seat (110). Inside each drive box (207), there are two rotating shafts symmetrically distributed around the vertical center of the drive box (207). The outer arc surface of each rotating shaft is fixedly fitted with a bevel gear (208). The rotating shafts are fixed to the adjacent worm gears (206) by couplings. Inside each drive box (207), there is a U-shaped seat (209). A linkage rod is rotatably installed between the U-shaped seat (209) and the inner wall of the adjacent drive box (207). The outer arc surface of each linkage rod is fixedly fitted with a bevel gear (210). The bevel gear (210) meshes with the adjacent bevel gear (208).

4. The loading and unloading mechanism for large tanks using a gantry crane as described in claim 3, characterized in that: Each of the U-shaped seats (209) is equipped with a dual-axis motor (211), and the output shaft of the dual-axis motor (211) is fixed to the adjacent linkage rods by couplings.

5. The loading and unloading mechanism for large tanks using a gantry crane as described in claim 1, characterized in that: The loading and unloading control seat (110) is provided with a U-shaped seat (301) in the middle. An adjusting screw (302) is rotatably provided between the U-shaped seat (301) and the inner wall of the adjacent loading and unloading control seat (110). The adjusting screw (302) is threadedly connected to the adjacent sliding column (111). A dual-axis motor (303) is provided inside the U-shaped seat (301). The output shaft of the dual-axis motor (303) is fixed to the adjacent adjusting screw (302) by a coupling.

6. The loading and unloading mechanism for large tanks using a gantry crane as described in claim 1, characterized in that: The upper surface of the loading and unloading control seat (110) is fixedly provided with a connecting seat (109), and the upper surface of the connecting seat (109) is fixedly provided with a slide rod (108). The slide rod (108) is slidably disposed inside the slide cylinder (107). The top of the slide cylinder (107) is fixedly provided with a slide table (106), and the slide table (106) is slidably disposed on the lower side of the drive seat (105). The upper surface of the drive seat (105) is fixedly provided with a slide block (104), and the outer side of the slide block (104) is provided with a support frame (101). The upper end of the support frame (101) is fixedly provided with two guide rails (103) symmetrically distributed around the vertical center of the support frame (101). The slide block (104) is slidably disposed between the two guide rails (103).

7. The loading and unloading mechanism for large tanks using a gantry crane as described in claim 6, characterized in that: An electric push rod (304) is fixedly installed inside the slide cylinder (107). The telescopic end of the electric push rod (304) is connected and fixed to the slide column (111). An adjusting screw (305) is rotatably installed inside the drive seat (105). The adjusting screw (305) is threadedly connected to the slide table (106). A servo motor (306) is installed on the outside of the drive seat (105). The output shaft of the servo motor (306) is fixed to the adjusting screw (305) through a coupling. An electric push rod (307) is fixedly installed at the upper end of the support frame (101). The telescopic end of the electric push rod (307) is connected and fixed to the slide seat (104).

8. The loading and unloading mechanism for large tanks using a gantry crane as described in claim 6, characterized in that: The support frame (101) has positioning holes (102) at its four lower corners.

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