Automatic adjusting movable ladder for loading and unloading of swivel

Abstract

The utility model discloses a kind of automatic adjustment movable ladders for loading and unloading swan pipe, it is related to swan pipe loading and unloading technical field, including support frame and the ladder frame of its one side, support frame side is equipped with movable mechanism, support frame bottom both sides are equipped with trundle, the utility model passes through the meshing transmission power of worm and worm wheel, worm wheel drives second rotating rod rotation, and then drives second connecting rod movement, two second connecting rod synchronous transmission force to first connecting rod, first connecting rod passes through link rod and transmits force to ladder frame, ladder frame starts to move and inclines, it is convenient for operator to climb to tank car top, whole process relies on the mechanical linkage design of precision, ensure that the smooth progress of liquid material loading and unloading process, improve the security and efficiency of operation.

Description

Technical Field

[0001] This utility model relates to the field of loading and unloading technology of loading arms, and in particular to an automatically adjustable movable ladder for loading and unloading loading arms. Background Technology

[0002] Loading arms are key pieces of equipment for industrial fluid loading and unloading. They are specifically designed for loading and unloading liquid media (such as petroleum, chemical raw materials, liquefied natural gas, etc.) from containers such as railway tank cars, truck tank cars, and tank ships, replacing traditional hoses to achieve efficient and sealed transmission. The core components consist of a rotary joint, a rigid arm, a balancing mechanism, a sealing device, and an operating platform.

[0003] However, in existing technologies, the deployment, folding, and repositioning of traditional movable ladders mainly rely on manual dragging or pushing, a cumbersome, laborious, and inefficient process that makes it difficult to quickly respond to frequent operational needs. Secondly, there are significant safety hazards: manual operation is difficult to control precisely, which can easily lead to the ladder suddenly slipping or tipping over; the locking mechanism after the equipment is in place is often unreliable, and accidental movement may occur when personnel are climbing or operating it. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the traditional movable ladders in the prior art mainly rely on manual dragging or pushing for deployment, retraction, and position adjustment, which is cumbersome, laborious, and inefficient. Therefore, this invention proposes an automatically adjustable movable ladder for loading and unloading loading arms.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automatic adjustable movable ladder for loading and unloading loading arms, comprising a support frame and a ladder frame on one side, a movable mechanism installed on one side of the support frame, and casters installed on both sides of the bottom of the support frame; The moving mechanism includes a mounting frame fixedly connected to the side wall of the support frame. A worm gear is rotatably connected to the inside of the mounting frame. A worm wheel is meshed with one side of the worm gear. A second rotating rod is fixedly connected to the inside of the worm wheel. Both ends of the second rotating rod are rotatably connected to the support frame, and both ends of the second rotating rod are rotatably connected to a second connecting rod. A first connecting rod is rotatably connected to the inside of one end of each of the two second connecting rods. Both ends of the second connecting rod are rotatably connected to a linkage rod, and one end of the linkage rod is rotatably connected to the side wall of the ladder frame.

[0006] Preferably, a mounting plate is fixedly connected to the side wall of the support frame, and a first transmission rod is rotatably connected to one end of the mounting plate.

[0007] Preferably, a drive motor is installed on the side wall of the mounting bracket, and the output end of the drive motor is fixedly connected to the worm gear.

[0008] Preferably, one end of the first transmission rod is rotatably connected to the side wall of the ladder frame.

[0009] Preferably, a first rotating rod is rotatably connected to the bottom end of the ladder frame, and two movable wheels are fixedly connected to the outer surface of the first rotating rod.

[0010] Preferably, multiple ladder plates are installed on the inner side of the ladder frame, and a limit plate is fixedly connected to the top of the ladder frame.

[0011] Preferably, a locking plate is rotatably mounted on the surface of the caster.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, power is transmitted through the meshing of the worm and the worm wheel. The worm wheel drives the second rotating rod to rotate, which in turn drives the second connecting rod to move. The two second connecting rods synchronously transmit the force to the first connecting rod. The first connecting rod transmits the force to the ladder frame through the linkage rod. The ladder frame begins to move and tilt, making it easier for operators to climb to the top of the tank truck. The whole process relies on a precise mechanical linkage design to ensure the smooth progress of the liquid material loading and unloading process and improve the safety and efficiency of the operation. 2. In this utility model, the relative rotation between the first transmission rod and the mounting plate provides support for the rotation of the ladder frame, ensuring that it maintains balance and stability during the activity. The bottom moving wheels help the ladder frame slide smoothly and provide a quick folding function. The limiting plate is mounted on the top of the support frame to prevent deviation when unfolded. The moving wheels and casters work together to allow the ladder frame to move easily on different ground surfaces. The locking function of the locking plate effectively prevents the support frame from moving arbitrarily. Attached Figure Description

[0013] Figure 1 This utility model provides a schematic diagram of the overall three-dimensional structure of an automatic adjustable movable ladder for loading and unloading loading arms; Figure 2 This utility model provides a partial structural diagram of an automatically adjustable movable ladder for loading and unloading loading arms; Figure 3 This utility model provides a three-dimensional structural diagram of the movable mechanism and ladder frame in an automatic adjusting movable ladder for loading and unloading loading arms; Figure 4 This utility model presents a three-dimensional structural diagram of the movable mechanism in an automatic adjusting movable ladder for loading and unloading arms.

[0014] Legend: 1. Support frame; 2. Ladder frame; 21. Limiting plate; 22. Ladder plate; 23. First rotating rod; 24. Moving wheel; 3. Movable mechanism; 31. Drive motor; 311. Worm gear; 32. Mounting bracket; 33. First transmission rod; 331. Mounting plate; 34. Second rotating rod; 35. Worm gear; 36. Linkage rod; 37. First connecting rod; 38. Second connecting rod; 4. Caster; 5. Locking plate. Detailed Implementation

[0015] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0017] Example 1: As Figures 1-4 As shown, this utility model provides an automatic adjustable movable ladder for loading and unloading loading arms, including a support frame 1 and a ladder frame 2 on one side. A movable mechanism 3 is installed on one side of the support frame 1, and casters 4 are installed on both sides of the bottom of the support frame 1. The active mechanism 3 includes a mounting frame 32 fixedly connected to the side wall of the support frame 1. A worm gear 311 is rotatably connected to the inner side of the mounting frame 32. A worm wheel 35 is meshed with one side of the worm gear 311. A second rotating rod 34 is fixedly connected to the inner side of the worm wheel 35. Both ends of the second rotating rod 34 are rotatably connected to the support frame 1, and both ends of the second rotating rod 34 are rotatably connected to second connecting rods 38. One end of each of the two second connecting rods 38 is rotatably connected to a first connecting rod 37. Both ends of the second connecting rods 38 are rotatably connected to a linkage rod 36. One end of the linkage rod 36 is rotatably connected to the side wall of the ladder frame 2.

[0018] The specific setup and function of this embodiment are described below. During the loading and unloading of liquid materials from tank trucks using an arm, operators need to climb onto the top of the tank truck to perform related operations. When the worm gear 311 is activated, it generates a meshing force through rotation, which is transmitted to the worm wheel 35. The worm wheel 35 is a key mechanical component; it meshes with the worm gear 311 and converts the rotational motion of the worm gear 311 into the rotation of the worm wheel 35. The rotation of the worm wheel 35 drives the second rotating rod 34 connected to it to begin rotating. The rotation of the second rotating rod 34 further drives the second connecting rod 38 to move along its axial direction.

[0019] During this process, the two second connecting rods 38 transmit power synchronously. Through a linkage effect, they transmit the generated force to the first connecting rod 37. The first connecting rod 37 transmits the force to the ladder frame 2 through two linkage rods 36. The ladder frame 2 then begins to respond and moves under the action of the force.

[0020] As the ladder 2 begins to move, it gradually tilts, changing its angle. This tilting action makes the angle between the ladder 2 and the ground more suitable, allowing operators to easily climb to the top of the tanker truck to load and unload liquid materials. Through this mechanical linkage, the loading arm system ensures that operators not only find the material loading and unloading operations simple, but also improve work efficiency and safety.

[0021] Example 2: Figures 3-4 As shown, a mounting plate 331 is fixedly connected to the side wall of the support frame 1, and a first transmission rod 33 is rotatably connected to one end of the mounting plate 331. A drive motor 31 is mounted on the side wall of the mounting frame 32, and the output end of the drive motor 31 is fixedly connected to a worm gear 311. One end of the first transmission rod 33 is rotatably connected to the side wall of the ladder frame 2. A first rotating rod 23 is rotatably connected to the bottom end of the ladder frame 2, and two moving wheels 24 are fixedly connected to the outer surface of the first rotating rod 23. Multiple ladder plates 22 are installed on the inner side of the ladder frame 2, and a limit plate 21 is fixedly connected to the top end of the ladder frame 2. A locking plate 5 is rotatably mounted on the surface of the caster 4.

[0022] The overall effect of this embodiment is that during the movement of the ladder frame 2, the first transmission rod 33 and the mounting plate 331 rotate relative to each other, and this rotational relationship between the first transmission rod 33 and the mounting plate 331 plays an important role in mechanical support. When the ladder frame 2 rotates or adjusts its angle, the first transmission rod 33 can effectively support the rotational movement of the ladder frame 2, ensuring that the ladder frame 2 maintains balance and stability during rotation.

[0023] Furthermore, the ladder frame 2 can move stably via the casters 24 at its bottom. These casters 24 allow the ladder frame 2 to glide smoothly on the ground. Whether in its unfolded state or when it needs to be folded up, the casters 24 at the bottom ensure that the ladder frame 2 remains in a controllable and stable state.

[0024] When not in use, the ladder rack 2 can be quickly folded and stored without much manual intervention, saving space and making it easy to store.

[0025] Furthermore, when the ladder frame 2 is deployed, the limiting plate 21 is precisely mounted on the top of the support frame 1, a design that ensures the stability and safety of the ladder frame 2. The limiting plate 21 effectively prevents the ladder frame 2 from shifting or tilting uncontrollably during deployment. To further enhance the mobility of the ladder frame 2, the combined use of the moving wheels 24 and casters 4 provides a more convenient moving experience. Through the cooperation of these wheels, the ladder frame 2 can be easily moved on different surfaces, whether flat or on more complex terrain, ensuring that the ladder frame 2 moves smoothly and efficiently.

[0026] Meanwhile, the locking function of the locking plate 5 is crucial to ensuring the stability and safety of the ladder frame 2 during use. The locking plate 5 can precisely lock the position of the support frame 1 when needed, preventing the support frame 1 from moving freely or undergoing unnecessary displacement during use, thereby effectively ensuring the safety and stability of the ladder frame 2 under load and during use.

[0027] The operating method and working principle of this device are as follows: When using an loading arm to load and unload liquid materials from a tank truck, the operator needs to climb to the top of the tank truck. During this process, rotating the worm gear 311 applies a meshing force to the worm wheel 35, causing the worm wheel 35 to drive the second rotating rod 34 to rotate. The rotation of the second rotating rod 34 further drives the second connecting rod 38 to move. The two second connecting rods 38 simultaneously transmit force, causing the first connecting rod 37 to start moving. The first connecting rod 37 transmits the force to the ladder frame 2 through two linkage rods 36, thereby causing the ladder frame 2 to move and tilt, making it easier for the operator to climb.

[0028] During the movement of the ladder frame 2, the first transmission rod 33 rotates relative to the mounting plate 331, providing support when the ladder frame 2 rotates. This allows the ladder frame 2 to move stably using the bottom casters 24 and also facilitates quick folding when not in use. When unfolded, the limiting plate 21 rests precisely on top of the support frame 1. Furthermore, the casters 24 and 4 facilitate equipment movement, while the locking function of the locking plate 5 prevents accidental movement of the support frame 1.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. An automatically adjustable movable ladder for loading and unloading loading arms, comprising a support frame (1) and a ladder frame (2) on one side, characterized in that: A movable mechanism (3) is installed on one side of the support frame (1), and casters (4) are installed on both sides of the bottom of the support frame (1). The movable mechanism (3) includes a mounting frame (32) fixedly connected to the side wall of the support frame (1). A worm gear (311) is rotatably connected to the inner side of the mounting frame (32). A worm wheel (35) is meshed on one side of the worm gear (311). A second rotating rod (34) is fixedly connected to the inner side of the worm wheel (35). Both ends of the second rotating rod (34) are rotatably connected to the support frame (1), and both ends of the second rotating rod (34) are rotatably connected to a second connecting rod (38). One end of the two second connecting rods (38) is rotatably connected to a first connecting rod (37). Both ends of the second connecting rods (38) are rotatably connected to a linkage rod (36). One end of the linkage rod (36) is rotatably connected to the side wall of the ladder frame (2).

2. The automatically adjustable movable ladder for loading and unloading loading arms according to claim 1, characterized in that: The support frame (1) has a mounting plate (331) fixedly connected to its side wall, and a first transmission rod (33) is rotatably connected to one end of the mounting plate (331).

3. The automatically adjustable movable ladder for loading and unloading loading arms according to claim 1, characterized in that: The mounting bracket (32) has a drive motor (31) mounted on its side wall, and the output end of the drive motor (31) is fixedly connected to the worm gear (311).

4. The automatically adjustable movable ladder for loading and unloading loading arms according to claim 2, characterized in that: One end of the first transmission rod (33) is rotatably connected to the side wall of the ladder frame (2).

5. The automatic adjustable movable ladder for loading and unloading loading arms according to claim 1, characterized in that: The bottom end of the ladder frame (2) is rotatably connected to a first rotating rod (23), and two moving wheels (24) are fixedly connected to the outer surface of the first rotating rod (23).

6. The automatically adjustable movable ladder for loading and unloading loading arms according to claim 1, characterized in that: Multiple ladder plates (22) are installed on the inner side of the ladder frame (2), and a limit plate (21) is fixedly connected to the top of the ladder frame (2).

7. The automatically adjustable movable ladder for loading and unloading loading arms according to claim 1, characterized in that: The caster (4) is rotatably mounted with a locking plate (5).

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