A mobile operating platform

Abstract

The utility model provides a movable operation platform, including main body frame and step platform, main body frame has different height's first side and second side, and is provided with the stepped frame between first side and second side, and the height difference between multiple adjacent stepped frames is equal to the height difference of main body frame between first side and second side, step platform is installed on the stepped frame, and forms the stepped passageway between first side and second side of main body frame, the utility model discloses a movable step ladder and waste collection bin are combined together based on the actual operation of dry ice machine, make dry ice machine group operation more convenient, satisfy the demand of climbing through the construction stepped passageway, install the bin on the operation platform and realize the function of receiving material, cooperate with the wheel group at the bottom of operation platform and move, to solve the problem that operation platform fuses the climbing, receiving material and moving function in the work space.

Description

Technical Field

[0001] This utility model relates to the field of mobile structure technology, and in particular to a mobile operating platform. Background Technology

[0002] A common problem exists in the operation of certain industrial equipment (such as dry ice production equipment): some key equipment or operating points lack dedicated auxiliary operating platforms that match their functions. This is mainly reflected in two aspects:

[0003] Accessibility and Status Monitoring Barriers: When critical functional areas of equipment (such as high-level silos) lack effective status indicators (e.g., material level displays) and are missing nearby operating platforms that are easily accessible and observable by operators, it becomes difficult for them to perform necessary visual checks and verifications before executing corresponding operational procedures (e.g., confirming material status before equipment startup). This directly leads to a lack of operational information, easily causing operational errors (e.g., insufficient material supply), which in turn affects product quality and production efficiency.

[0004] Lack of by-product / waste treatment facilities: During equipment operation, by-products or waste that require immediate treatment (such as low-temperature residues) are inevitably generated. The lack of a dedicated receiving device (such as a receiving hopper) integrated with the equipment's discharge outlet, which is easy to move and collect, not only causes material spillage and waste, but also poses a direct safety threat to on-site personnel due to its potential hazards (such as low temperature and chemical reactivity) (such as frostbite and slips), and pollutes the working environment.

[0005] In the existing technology, there is often a lack of integrated, functionally adapted and mobile operation assistance platforms for such specific equipment (such as this dry ice machine), and general solutions (such as fixed ladders and temporary containers) are difficult to meet the comprehensive needs of convenient operation, safe collection and efficient space utilization.

[0006] Therefore, there is an urgent need to develop a specially designed operating platform that integrates multiple functions (observation, operation, and collection) and can be flexibly moved and stored to overcome the above-mentioned operational bottlenecks and improve operational safety, reliability, and environmental friendliness.

[0007] It should be noted that the information disclosed in the above background section is only used to enhance the understanding of the background of this utility model and does not constitute any limitation on this utility model. Utility Model Content

[0008] In view of the shortcomings of the prior art described above, this utility model provides a mobile operating platform that meets the need for climbing by constructing a stepped passage, installs a hopper on the operating platform to realize the material receiving function, and moves in conjunction with the wheel set at the bottom of the operating platform, so as to solve the problem of integrating climbing, material receiving and moving functions of the operating platform in the work space.

[0009] This utility model provides a movable operating platform, including a main frame and a step platform; the main frame has a first side and a second side with different heights, and a stepped frame is provided between the first side and the second side, and the sum of the height differences between multiple adjacent stepped frames is equal to the height difference between the main frame and its first side and second side; the step platform is installed on the stepped frame and forms a stepped passage between the first side and the second side of the main frame.

[0010] In one embodiment of the present invention, the height of the first side of the main frame is greater than the height of the second side, and a guide rail is installed on the stepped frame located on the first side, the direction of the guide rail being perpendicular to the direction from the first side to the second side of the main frame.

[0011] In one embodiment of this utility model, the guide rail is made of channel steel, and limit blocks are installed at both ends of the guide rail.

[0012] In one embodiment of this utility model, a hopper is installed on the guide rail, and the hopper slides along the guide rail via a guide wheel.

[0013] In one embodiment of the present invention, a support frame is installed at the bottom of the hopper on the side away from the main frame, and the bottom of the support frame is flush with the bottom of the main frame.

[0014] In one embodiment of the present invention, the outer contour of the hopper is flush with or protrudes from the first side of the main frame.

[0015] In one embodiment of the present invention, a insert plate is installed on the side of the hopper facing the second side of the main frame, and the hopper forms an opening by opening the insert plate.

[0016] In one embodiment of the present invention, the bottom surface of the hopper is sloped towards the insertion plate, and the lowest point of the bottom surface of the hopper is close to the insertion plate.

[0017] In one embodiment of this utility model, the step platform is made of steel grating.

[0018] In one embodiment of the present invention, casters are installed at the bottom of the main frame and the support frame.

[0019] The beneficial effects of this utility model include at least the following:

[0020] 1. This utility model provides a mobile operating platform that combines a mobile step ladder and a waste collection bin based on the actual operation of the dry ice machine, making the operation of the dry ice unit more convenient.

[0021] 2. The mobile operating platform facilitates the inspection and confirmation of various production preparation procedures before startup, meeting the requirements that the dry ice machine feed hopper is located at the highest point of the unit, and the material level is not remotely transmitted or displayed locally, and the material level in the hopper needs to be confirmed before the extrusion module is started.

[0022] 3. After the dry ice machine finishes feeding, the -25℃ low-temperature residue will be sprayed out through the waste outlets on both sides of the unit and discharged into the hopper of the mobile operating platform, so as to collect the waste and avoid the spillage of the discharged material and prevent damage to personnel and the environment.

[0023] 4. Through the mobile operating platform, the collected waste can be transferred to a safe location for centralized disposal after the dry ice machine is finished operating.

[0024] 5. After the mobile operating platform is used, the hopper can be moved to the top of the stairs by the guide wheels for easy storage and will not create any safety hazards that would obstruct passage.

[0025] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments conforming to the present invention and, together with the description, serve to explain the principles of the present invention. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0027] Figure 1 This is an isometric view of the movable operating platform of this utility model;

[0028] Figure 2 This is a side view schematic diagram of the structure of the mobile operating platform of this utility model;

[0029] Figure 3 This is a schematic front view of the structure of the mobile operating platform hopper of this utility model in its unfolded state;

[0030] Figure 4 This is a schematic front view of the structure of a movable operating platform in the storage state of its hopper, as shown in one embodiment.

[0031] In the diagram: 10. Main frame; 101. First side; 102. Second side; 20. Stepped frame; 21. Step platform; 22. Guide rail; 30. Hopper; 31. Support frame; 32. Insert plate; 40. Casters. Detailed Implementation

[0032] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of this utility model is for describing specific implementation schemes and not for limiting the scope of protection of this utility model.

[0033] Please see Figures 1 to 4 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms used in this specification regarding position, quantity, etc., are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to these relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention's implementation.

[0034] Please see Figure 1 and Figure 2 This utility model provides a movable operating platform, including a main frame and a step platform. The main frame has a first side and a second side with different heights, and a stepped frame is provided between the first side and the second side. The sum of the height differences between multiple adjacent stepped frames is equal to the height difference between the main frame and its first side and second side. The step platform is installed on the stepped frame and forms a stepped passage between the first side and the second side of the main frame.

[0035] Specifically, in this embodiment of the invention, a stable and ergonomic stepped climbing path is constructed. The main frame, serving as the load-bearing skeleton of the entire platform, has a lower first side on one side and a higher second side on the other, with a reference height difference between them. Within this height gradient space, a stepped frame is set up, which is composed of multiple connected stepped frame units arranged in a ladder-like manner. Furthermore, the sum of the height differences (i.e., the height of each step) between all adjacent stepped frame units is equal to the reference height difference between the first and second sides of the main frame, ensuring that the stepped frame can match the vertical space of the main frame in this direction.

[0036] Furthermore, the steps are directly installed on each level of the stepped frame, with each stepped frame unit providing a stable horizontal support platform for the steps above them. The arrangement of the steps follows the tiered arrangement of the stepped frame, thus naturally forming a continuous, equal-height sequence of steps. The combination of multiple consecutive steps connects the vertical space between the first and second sides of the main frame, ultimately forming a stepped passageway connecting the lower and higher levels.

[0037] In this way, personnel can ascend or descend via this stepped passageway. Each step provides a stable, level foothold, and the clear and consistent height difference between adjacent steps allows operators to safely ascend and descend step by step using standard climbing techniques. This improves operational safety and accessibility, effectively eliminating obstacles caused by single height differences, and enabling personnel to smoothly and stably reach higher work positions. The stepped structure not only conforms to the human body's natural climbing habits, reducing physical exertion and the risk of falls, but also ensures the integrity and stability of the stepped passageway covering the entire vertical travel distance through height matching, thereby improving operational convenience and efficiency.

[0038] Please see Figure 1 and Figure 2 In one embodiment, the height of the first side of the main frame is greater than the height of the second side, and a guide rail is installed on the stepped frame located on the first side. The direction of the guide rail is perpendicular to the direction from the first side to the second side of the main frame.

[0039] Specifically, in this embodiment of the invention, the main frame of the movable operating platform is designed with a height difference, where the first side has a relatively large height and the second side is at a lower height, resulting in a clear decreasing height trend from the first side to the second side. On the first side, located at a higher position on the main frame, guide rails are installed on the stepped frame tiers. The extension direction of these guide rails is set to be perpendicular to the direction from the first side to the second side on the main frame, forming a transverse guide path orthogonal to the direction of height change of the main frame in space. It should be noted that the direction of the guide rails is determined based on the structure of the main frame. Since the main frame is generally composed of mutually orthogonal rod-like structures, the guide rails are directly arranged on the rod-like structures of the main frame, forming a guide path orthogonal to the direction from the first side to the second side of the main frame. Correspondingly, the guide rails can also be set in other directions according to corresponding needs, which will not be elaborated here.

[0040] More specifically, the height difference between the two sides of the main frame divides the spatial hierarchy of the operating platform. The guide rails are positioned on the higher, structurally stronger, stepped frame on the first side, providing a stable foundation. The orthogonality between the guide rail direction and the main direction of the main frame (from the first to the second side) provides a lateral movement path independent of longitudinal height changes. This lateral guide path extends the auxiliary functions of the stepped passage (vertically up and down along the height difference), allowing auxiliary functional units (such as receiving bins) to be introduced at the highest point of the operating platform, enabling smooth lateral sliding on the guide rails. This lateral movement capability is independent of the overall platform movement. Placing the guide rails on the highest (first) stepped frame fully utilizes the space capacity and proximity to the equipment operating points, ensuring that movable parts can easily serve their respective operations and move quickly along the guide rails after completion, significantly improving space utilization and operational efficiency. The guiding effect of the guide rails further ensures the smooth movement and accurate positioning of auxiliary functional units, effectively preventing swaying or misalignment, thereby enhancing the overall safety and reliability of the operation.

[0041] In one embodiment, the guide rail is made of channel steel, and limit blocks are installed at both ends of the guide rail.

[0042] Specifically, in this embodiment of the invention, the guide rails that play a guiding role in the operating platform are selected from channel steel. The unique channel-shaped cross-sectional structure of channel steel is directly applied to the manufacture of the guide rails, and its groove-like cross-sectional shape constitutes the working surface of the guide rails. The channel steel guide rails are installed in designated positions (as mentioned above, on the first side stepped frame). Limiting blocks are specially installed at both ends of each channel steel guide rail. The limiting blocks are fixed to the ends of the channel steel guide rails through a reliable connection method (such as welding or bolt fastening), making them an integral part of the overall guide rail structure.

[0043] More specifically, the channel steel's grooved cross-section provides a double-sided constrained guide channel for components moving on it (such as a receiving bin with guide wheels). The two side walls of the groove effectively limit the lateral displacement of the moving components, ensuring smooth sliding along a preset straight path. The channel steel itself, as a standard structural profile, possesses excellent mechanical strength and rigidity, capable of withstanding the pressure and potential impacts from the moving components and their loads, providing a robust and reliable foundation for the entire guiding system. Limit blocks installed at both ends of the guide rail serve as stroke control and safety assurance. When a moving component slides on the channel steel guide rail to near its effective stroke limit, these blocks act as obstacles, preventing the guide wheels or other moving components from continuing forward or slipping out of the guide rail range. This rigid limit design effectively prevents accidents such as derailment or slippage of moving components due to operational negligence or accidents, ensuring the absolute positional boundaries during equipment use, thereby improving the safety and reliability of the operating platform. The combination of channel steel guide rails and limit blocks together creates a stable movement path that has both precise guiding capability and clear travel boundaries and safety assurance.

[0044] Please see Figures 1 to 4 In one embodiment, a hopper is installed on the guide rail, and the hopper slides along the guide rail via a guide wheel.

[0045] Specifically, in this embodiment of the invention, the hopper, a functional unit, is supported on the guide rail of the operating platform, with guide wheels installed on the bottom structure of the hopper. The position and arrangement of the guide wheels correspond to the direction and structure of the guide rail below. The entire hopper is movably positioned on the guide rail via the guide wheels installed at its bottom, and its movement is achieved through the interaction between the guide wheels and the contact surfaces of the guide rail. The movement of the hopper is driven by the rolling or sliding of the guide wheels on the guide rail. The role of the guide wheels is to convert the sliding friction between the hopper and the fixed guide rail into rolling friction (if using rolling bearing wheels) or at least controllable low-resistance sliding (if using sliding bushings). This transformation or optimization of friction allows the hopper to move smoothly back and forth on the guide rail with relatively small force under manual pushing or external force. The guide rail provides a precise and constrained motion trajectory for the movement of the hopper. The guide wheel (or its rim) is embedded in or conforms to the guide structure of the guide rail (such as the groove in the aforementioned channel steel). This fit effectively limits any lateral deviation, tilting, or torsion that may occur during the movement of the hopper, ensuring that it always runs smoothly along the straight path set by the guide rail. The hopper achieves precise positioning on the operating platform (e.g., moving to a working position for material receiving) or convenient storage (e.g., moving to a non-working position for storage) through the controllable movement of the guide wheel on the guide rail. This improves the flexibility and efficiency of hopper operation while ensuring the stability and safety of the movement process, avoiding the risk of collision or overturning caused by uncontrolled sliding of the hopper.

[0046] Please see Figures 1 to 4 In one embodiment, a support frame is installed at the bottom of the silo on the side away from the main frame, and the bottom of the support frame is flush with the bottom of the main frame.

[0047] Specifically, in this embodiment of the invention, to ensure the overall stability and load-bearing balance of the silo on the operating platform, a support frame is installed on the bottom side of the silo away from the main frame. This support frame is directly fixed to the bottom structure of the silo, serving as an extended support component. The bottom plane of the lowest point of the support frame is configured to be at the same horizontal level as the bottom plane of the main frame of the operating platform, achieving vertical alignment between the two.

[0048] More specifically, the support frame installed at the bottom of the cantilever end of the silo (the side furthest from the main frame) provides an independent and stable additional support point for the silo. When the silo sits on the guide rails via its guide wheels (the guide rails themselves are part of the main frame structure), the weight of the silo closer to the main frame is mainly borne by the main frame through the guide rails. However, the part of the silo furthest from the main frame forms a cantilever structure, which is at risk of tilting or swaying. At this time, the support frame at the bottom of this cantilever end plays an auxiliary supporting role. Its bottom is designed to be flush with the bottom of the main frame, so that the support frame and the bottom support surface of the main frame can form a horizontal and consistent joint load-bearing foundation. When the silo is carrying materials or its own weight, the bottom of the support frame and the bottom support surface of the main frame will simultaneously contact the ground or foundation surface, thereby effectively distributing the load transmitted from the cantilever end of the silo and reducing the tendency of the silo to tilt or twist due to the shift in the center of gravity or unbalanced load.

[0049] Thus, the flush bottom joint support structure of the hopper ensures that it maintains a horizontal posture and overall stability whether it is moving or stationary, avoiding stress concentration or structural deformation caused by unilateral overhang, and also ensuring the stability of the entire operating platform when placed. Furthermore, the cantilever structure formed by the hopper relative to the main frame allows the hopper to be moved above the main frame via guide wheels after use, facilitating storage, reducing space occupation, and avoiding safety hazards such as obstructing passage.

[0050] Please see Figure 2 In one embodiment, the outer contour of the hopper is flush with or protrudes from the first side of the main frame.

[0051] Specifically, in this embodiment of the invention, the hopper is positioned on the first side of the main frame. The first side of the main frame, being the relatively higher side of the platform structure, not only provides a mounting base for the guide rails but also reserves space for the arrangement of the hopper. After the hopper is installed (usually seated on the guide rails via guide wheels and potentially combined with a support frame), its outermost contour boundary, i.e., its outer contour, is designed to have two positional relationships with the outermost contour boundary of the main frame on the first side: either flush with the outer edge of the first side of the main frame, or protruding beyond the outer edge of the first side of the main frame.

[0052] More specifically, when the outer contour of the hopper is flush with the outer contour of the first side of the main frame, the overall structure of the hopper is completely contained within the spatial projection range of the first side of the main frame or exactly coincides with its boundary. This ensures that the overall structure of the operating platform on the first side presents a neat edge line, avoiding unnecessary space occupation and facilitating the arrangement and movement of the operating platform in a compact equipment environment. When the outer contour of the hopper protrudes from the first side of the main frame, the hopper extends beyond the boundary of the main frame itself in that direction. This allows the hopper to be more directly close to or aligned with relevant equipment interfaces or operating points located outside the operating platform (e.g., the waste outlet of a dry ice machine). This direct spatial extension reduces the physical distance and spatial obstacles between the hopper and the target operating point, providing a direct and efficient transmission path for the target material (such as ejected low-temperature residue) from external equipment to the hopper interior, thereby facilitating waste collection operations and potentially reducing material spillage or splashing. Whether flush or protruding, the hopper is fixedly positioned in the high point area of ​​the platform on the first side of the main frame, facilitating the reception of materials discharged from equipment above or to the side.

[0053] Please see Figures 1 to 4 In one embodiment, a baffle plate is installed on the side of the hopper facing the second side of the main frame, and the hopper forms an opening by opening the baffle plate.

[0054] Specifically, in this embodiment of the invention, an insert plate is installed on a specific surface of the silo box structure, namely, on the side facing the second side of the main frame. The insert plate is designed as a movable plate (such as a steel plate), and through a corresponding mounting structure (such as embedded side limiting grooves or slide rails), it can be controllably slid open or close relative to the silo box wall. When the operator pulls the insert plate open in a specific direction (such as horizontally or vertically), the silo wall area that was originally closed by the insert plate opens accordingly, thereby forming an opening on the silo box wall on the second side facing the main frame. The size and position of the opening are determined by the opening stroke of the insert plate and its own dimensions, and its boundary is jointly defined by the silo box wall structure and the outline of the insert plate itself.

[0055] Furthermore, the baffle plate installed on the second side of the silo provides a controllable, partial opening channel. When the baffle plate is closed, it maintains the integrity of the silo wall, ensuring that the silo, as a closed or semi-closed container, can properly fulfill its containment function (such as receiving and temporarily storing materials). When a specific operation is required (such as cleaning collected materials), the baffle plate can be opened manually or with simple tools, creating the desired opening on the second side of the silo facing the main frame. This opening provides operators with a direct channel to the interior of the silo (especially the bottom area) and serves as an outlet for the directional discharge of materials from the silo. Since the opening's formation depends entirely on the opening action of the baffle plate, operators can flexibly control the size of the opening (partially or fully open) according to actual needs (such as the size of cleaning tools and material discharge speed requirements). This gives the silo operational flexibility in material handling and cleaning maintenance, avoiding the cumbersome operations of reserving space for fixed openings or requiring the entire silo to be disassembled for cleaning, simplifying the workflow and improving operational efficiency. At the same time, the opening is located on the side facing the second (relatively lower) side of the main frame, which also facilitates the use of gravity to assist in the discharge of materials or their access to the operator's position.

[0056] In one embodiment, the bottom surface of the hopper is sloped towards the insertion plate, and the lowest point of the bottom surface of the hopper is close to the insertion plate.

[0057] Specifically, in this embodiment of the invention, the bottom structure of the internal accommodating space of the silo is designed to be inclined. The bottom surface is not horizontal, but rather forms a continuous and consistent downward slope starting from a position inside the silo away from the insert plate, towards the direction where the insert plate is located (i.e., towards the second side wall of the main frame). This slope ensures that the entire bottom surface of the silo presents an inclined plane in a specific direction. Furthermore, the geometric design of this inclined bottom surface positions the lowest point close to the insert plate; that is, when the insert plate is closed, the lowest point is adjacent to the lower edge region of the inner side of the insert plate.

[0058] The slope of the hopper's bottom facing the baffle plate, with its lowest point close to the baffle plate, utilizes gravity to achieve directional flow and collection of materials. When materials (such as waste from a dry ice machine) enter the hopper, they fall onto the sloping bottom surface. Under their own weight, the material particles naturally slide down the slope, eventually collecting and accumulating at the lowest point of the bottom surface, right next to the baffle plate. When the hopper needs to be emptied after operation (such as for waste cleaning or recycling), the operator simply opens the baffle plate. Since the lowest point is located near the opened baffle plate opening, the accumulated material can flow out smoothly and automatically under gravity, or be easily cleaned. This gravity-driven flow mechanism reduces reliance on manual intervention (such as shoveling or forceful flushing) and avoids material residue in the corners of the hopper bottom or areas far from the opening. The slope design combined with the lowest point positioning ensures that the material inside the hopper can be emptied efficiently and thoroughly, improving the convenience and efficiency of cleaning operations and maintaining the cleanliness of the hopper interior.

[0059] In one embodiment, the step platform is made of steel grating.

[0060] Specifically, in this embodiment of the invention, the support panel for the step platform used by personnel for walking on the operating platform is selected as a steel grating metal plate. The steel grating, with its unique mesh structure, is directly applied to the manufacture of the step platform, replacing the traditional solid steel plate. These steel gratings are firmly installed on each step of the stepped frame, serving as the direct foot support surface for personnel moving up and down the stepped passageway.

[0061] The steel grating structure consists of flat steel (load-bearing flat steel) and twisted square steel (crossbars) orthogonally welded at a certain interval to form a stable grid-like plane. This grid structure provides multiple functions for the step platform. First, the numerous regular holes between the grids provide extremely high water permeability and air permeability. When operators step onto the step platform in wet or slippery environments or after cleaning, water, oil, debris, and other liquids or small solids can quickly drain downwards through the grid holes instead of accumulating on the surface, reducing the risk of slipping and falling. Second, the grid structure makes the steel grating step platform extremely lightweight (compared to a solid steel plate with equivalent load-bearing capacity), reducing the structural burden on the overall platform. More importantly, the gridded surface provides excellent micro-friction resistance for the soles of shoes. The upper surface of the flat steel forms natural anti-slip strips at the grid nodes, while the crossbars act as lateral barriers. This combination enhances the friction between the soles of shoes and the step surface, providing operators with a stable and reliable foothold even in wet, oily, or slightly inclined conditions, significantly improving the safety of working at heights. Meanwhile, the inherent high strength and rigidity of steel grating ensures that it can withstand the weight of operators and potential impact loads, guaranteeing the structural integrity and service life of the step platform. Its ease of maintenance (dirt does not easily accumulate and it is easy to wash) and weather resistance are also significant advantages.

[0062] Please see Figures 1 to 4 In one embodiment, casters are installed at the bottom of the main frame and the support frame.

[0063] Specifically, in this embodiment of the invention, the overall mobility of the operating platform relies on casters installed at the bottom of its main load-bearing structure. Specifically, these casters are directly mounted and fixed to the bottom structure of the main frame and the bottom structure of the support frame, respectively. Each caster typically comprises a bogie capable of rotating freely 360 degrees around a vertical axis and a load-bearing wheel, serving as the motion actuator for the entire platform.

[0064] The advantage of casters lies in their omnidirectional steering capability and rolling movement characteristics. Because casters can rotate freely around their vertical axis, when an operator applies pushing or pulling force to the platform, the casters automatically adjust their rolling direction to align with the direction of the applied force. This allows the operating platform to move in any direction within the horizontal plane (forward, backward, sideways, diagonally, or rotating in place) without requiring a turn before movement, unlike fixed wheels. Their omnidirectional movement capability provides excellent maneuverability in densely packed equipment or space-constrained industrial environments, enabling easy obstacle avoidance or precise positioning to target work points. Simultaneously, the rolling of the casters on the ground converts sliding friction during platform movement into rolling friction, reducing the force required to push or pull the entire operating platform (including its load), allowing operators to move the platform easily and smoothly with relatively little effort. Furthermore, the casters used are typically equipped with locking mechanisms (such as brake pads or locking pins). Once the platform moves to the target position, engaging the locking mechanism restricts the rolling and steering freedom of the wheels, temporarily transforming the casters into fixed support points. This ensures the platform remains stationary and stable during operation, preventing any accidental slippage and guaranteeing operational safety and stability. The design of casters at the bottom of both the main frame and support frame ensures synchronized movement and consistent support for the entire platform (including its extensions).

[0065] In one embodiment, this invention utilizes structural steel, steel grating, lockable casters, and stainless steel plates to fabricate a movable staircase and waste bin. An insert plate is installed on the stainless steel waste bin panel, and the bin's bottom plate has a slight slope towards the insert plate for easy cleaning after use. Two small channel steel sections are welded to the top of the staircase as guide rails, with limiting blocks at both ends. Four small guide wheels are welded at the contact points between the stainless steel waste bin's bottom plate and the top guide rails of the staircase, facilitating the storage of the operating platform after use. This design provides the operating platform with broad application advantages: it can be used with various types of dry ice units in the chemical industry. The movable operating platform uses lockable casters for safety and stability, and anti-fall railings can be added to the staircase according to the unit's height. After use, it can be moved to a safe location, reducing obstacles to site access compared to fixed platforms. The operating platform integrates both climbing and material receiving operations, and the bins can be combined using guide wheels, simultaneously reducing the floor space and minimizing the impact on the working environment.

[0066] In summary, this utility model provides a mobile operating platform that achieves safe and efficient operation through the collaboration of multiple components. Its stepped passageway consists of a stepped frame supporting a steel grating step platform that matches the height difference of the main frame, improving safety and accessibility for climbing and eliminating height obstacles. The guide rail uses channel steel and limiting blocks; the channel steel cross-section provides precise guiding constraints, and the limiting blocks forcibly limit the stroke, ensuring the smooth movement of the hopper and preventing derailment. The hopper achieves positioning and storage through the sliding cooperation of guide wheels and guide rails; its supporting frame is flush with the bottom of the main frame, evenly distributing the overhang load to maintain the horizontal stability of the hopper; the slope design of the hopper's bottom towards the insertion plate allows materials to automatically collect at the lowest point, achieving efficient gravity-driven cleaning in conjunction with the insertion plate opening. The overall structure integrates climbing, receiving, moving, and storage functions within a compact space, significantly improving operational safety, convenience, and environmental adaptability.

[0067] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A mobile operating platform, characterized in that, include: A main frame having a first side and a second side with different heights, and a stepped frame provided between the first side and the second side, wherein the sum of the height differences between a plurality of adjacent stepped frames is equal to the height difference between the main frame and its first side; and A step platform is installed on the stepped frame and forms a stepped passage between the first and second sides of the main frame.

2. The operating platform according to claim 1, characterized in that, The height of the first side of the main frame is greater than the height of the second side. A guide rail is installed on the stepped frame located on the first side. The direction of the guide rail is perpendicular to the direction from the first side to the second side of the main frame.

3. The operating platform according to claim 2, characterized in that, The guide rail is made of channel steel, and limit blocks are installed at both ends of the guide rail.

4. The operating platform according to claim 2, characterized in that, A hopper is installed on the guide rail, and the hopper slides along the guide rail via a guide wheel.

5. The operating platform according to claim 4, characterized in that, A support frame is installed at the bottom of the hopper on the side away from the main frame, and the bottom of the support frame is flush with the bottom of the main frame.

6. The operating platform according to claim 4, characterized in that, The hopper is located on the first side of the main frame, with its outer contour either flush with or protruding from the first side of the main frame.

7. The operating platform according to claim 4, characterized in that, The hopper is equipped with a plate on the side facing the second side of the main frame, and the hopper forms an opening by opening the plate.

8. The operating platform according to claim 7, characterized in that, The bottom surface of the hopper is sloped towards the insertion plate, and the lowest point of the bottom surface of the hopper is close to the insertion plate.

9. The operating platform according to claim 1, characterized in that, The step platform is made of steel grating.

10. The operating platform according to claim 5, characterized in that, The bottom of the main frame and the support frame are equipped with casters.

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