A high-efficiency material conveying device with a small opening in a confined space

Abstract

This application relates to the field of efficient material transport in confined spaces, disclosing an efficient material transport device for narrow openings in confined spaces. The device includes a main frame, a lifting linkage mechanism, and a material transport assembly. The main frame is fixed to the ground. The lifting linkage mechanism is slidably disposed inside the main frame, and the material transport assembly is slidably disposed inside the lifting linkage mechanism. A limiting winch is located on one side of the bottom of the main frame, with a steel wire rope connected to its output shaft. A pulley is located on one side of the top of the main frame. A top pulley and a bottom pulley are located on one side of the top and bottom of the lifting linkage mechanism, respectively. A pull ring is located at the top of the material transport assembly. One end of the steel wire rope is connected to the output shaft of the limiting winch, and the other end passes sequentially around the pulley, bottom pulley, and top pulley before being fixedly connected to the pull ring. Functional blocks are fixedly disposed on both sides of the interior of the top of the lifting linkage mechanism. This application has a reasonable structure and can efficiently and stably transport materials vertically within confined spaces, meeting construction schedule requirements.

Description

Technical Field

[0001] This application relates to the field of efficient material handling technology in confined spaces, for example, to an efficient material handling device with a narrow opening in a confined space. Background Technology

[0002] Confined spaces refer to enclosed or partially enclosed spaces with restricted entrances and exits but accessible to personnel. These spaces are not designed as fixed workplaces, have poor ventilation, and are prone to the accumulation of toxic, harmful, flammable, and explosive substances or insufficient oxygen content. They are usually relatively isolated from the outside world, with narrow entrances and exits, and workers cannot work inside them for extended periods.

[0003] With the increasing application of confined space operations in building construction, the problems of low efficiency and poor safety in vertical material transportation in underground enclosed structures, which are confined spaces, are becoming increasingly prominent.

[0004] Currently, in the field of construction, the transportation of materials in limited spaces and narrow openings still relies on traditional manual handling methods. Construction workers need to carry a large number of blocks one by one to the work surface through narrow stairwells or reserved openings. This method is not only inefficient, but also has problems such as high labor intensity and many safety hazards. Especially in the case of limited space, it is easy to cause safety accidents such as bumps and slips, making it difficult to meet the requirements of material transportation and construction progress. Utility Model Content

[0005] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0006] This disclosure provides a high-efficiency material transport device with a narrow opening in a confined space. It has a reasonable structure and can efficiently and stably transport materials vertically within a confined space to meet construction progress requirements.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A high-efficiency material handling device for confined spaces with narrow openings includes a main frame, a lifting linkage mechanism, and a material handling assembly. The main frame is fixed to the ground. The lifting linkage mechanism is slidably disposed inside the main frame, and the material handling assembly is slidably disposed inside the lifting linkage mechanism. The material handling assembly is mainly used for holding and transporting materials. A limit winch is provided on one side of the bottom of the main frame. The output shaft of the limit winch is connected to a steel wire rope. The steel wire rope can be wound and unwound by starting the limit winch in both forward and reverse directions. A pulley is provided on one side of the top of the main frame. The lifting linkage mechanism... A top pulley and a bottom pulley are respectively provided on one side of the upper and lower ends. A pull ring is provided at the top of the material conveying group. One end of the wire rope is connected to the output shaft of the limit winch, and the other end passes through the intermediate pulley, bottom pulley, and top pulley in sequence before being fixedly connected to the pull ring. When the limit winch starts rotating forward, it will wind up the wire rope. The wire rope will first pass through the top pulley, then the bottom pulley, and finally the intermediate pulley before being transferred to the limit winch for winding. During the winding process, the end of the wire rope will pull the material conveying group upward through the pull ring, thereby achieving the purpose of transporting materials upward in a closed and confined space. This design facilitates vertical material transport, improves material handling efficiency, and enhances operational safety. Functional blocks are fixedly installed on both sides of the top of the lifting linkage mechanism. When the material transport group moves upwards under the drive of the wire rope to the functional blocks, it is obstructed. Under the action of the limit winch, the wire rope continues to wind up, and the force on the material transport group lifts the entire lifting linkage mechanism upwards through the functional blocks. With the cooperation of the lifting linkage mechanism and the main frame, their heights are superimposed, forming a double-layer lifting and telescopic structure. This allows the material transport group to be transported to a higher position, increasing practicality. When the lifting linkage mechanism reaches its highest position, the intermediate pulley will block the bottom pulley, which can prevent the lifting linkage mechanism from detaching from the main frame. If it is necessary to reset the material conveying group, the limit winch is reversed to release the wire rope. Under the gravity of the material conveying group and the lifting linkage mechanism, it will naturally fall back to its original position. Driven by the limit winch, the vertical conveying of materials can be effectively realized in a confined space. This method is efficient and stable, no longer relying on manual handling, saving labor, avoiding the risk of safety accidents, and well meeting the requirements of material conveying and construction progress in a confined space.

[0009] Furthermore, the main frame includes I-beams, a fixed frame, and a positioning rod. The fixed frame is set against the ground. Two I-beams are provided and fixed to the top side of the fixed frame. The lifting linkage mechanism is slidably set between the two I-beams. The side grooves of the I-beams constrain the lifting linkage mechanism. A positioning rod is provided on one side of the top of the I-beams. The two ends of the positioning rod are fixedly connected to the top sidewalls of the two I-beams respectively. The pulley is fixedly connected to the bottom side of the positioning rod. The positioning rod can both increase the stability of the two I-beams and be used to place the pulley.

[0010] Furthermore, ground-adhesive pieces are fixedly installed on both sides of the fixed frame. The ground-adhesive pieces are attached to the ground and each has a reserved hole. Workers can fix the ground-adhesive pieces to the ground by passing screws through the reserved holes, so as to achieve complete fixation between the fixed frame and the ground.

[0011] Furthermore, the bottom of the limiting winch is provided with a base, which is fixedly installed on the top side of the end of the fixed frame. The base is mainly used for the fixed installation of the limiting winch.

[0012] Furthermore, the distance between the I-beams is adapted to the width of the lifting linkage mechanism, and the width inside the I-beams is adapted to the thickness of the side of the lifting linkage mechanism, thereby ensuring that the lifting linkage mechanism will not sway between the I-beams and ensuring the stability of the lifting linkage mechanism when it moves up and down.

[0013] Furthermore, the material conveying unit mainly consists of a material conveying platform, a drive frame, and a limiting plate. The material conveying platform is a square frame and is hinged to the drive frame at one end via a hinge. The hinge connection allows for folding between the material conveying platform and the drive frame when material is not being transported, ensuring better flexibility during disassembly and turnover. The drive frame is located inside the lifting linkage mechanism and is slidably connected. The width and thickness of the drive frame are adapted to the width and thickness of the inner side of the lifting linkage mechanism to ensure the stability of the material conveying unit when moving inside the lifting linkage mechanism and to avoid the possibility of material being thrown out. The pull ring is fixedly located on the top of the drive frame and fixedly connected to the end of the wire rope.

[0014] Furthermore, limit plates are fixedly provided at the upper and lower ends of both sides of the drive frame. The limit plates are all set to fit the side of the corresponding lifting linkage mechanism. The limit plates set on both sides of the drive frame can clamp the side of the lifting linkage mechanism, thereby constraining the drive frame and preventing it from detaching from the inside of the lifting linkage mechanism.

[0015] Furthermore, both sides of the drive frame are provided with pull ropes of equal length. One end of the pull rope is fixedly connected to the side wall of the drive frame, and the other end is fixedly connected to the side wall of the material conveying platform. The pull rope can hold the material conveying platform. When the material is placed on the material conveying platform, the pull rope will be under force, which will reduce the pressure on the hinge.

[0016] The aforementioned limit winch is existing technology. The forward and reverse rotation and start and stop of the limit winch can be controlled by the operator. Those skilled in the art can clearly and correctly understand this utility model and can obtain relevant information from existing literature.

[0017] The present disclosure provides an efficient material conveying device for confined spaces with narrow openings, which can achieve the following technical effects:

[0018] This invention is applied to the vertical transport of materials through narrow openings in confined spaces. In these limited areas, the device's limit winch, when started in the forward rotation, winds up a steel wire rope. The wire rope first passes through the top pulley, then the bottom pulley, and finally the intermediate pulley before being transferred to the limit winch for winding. During the winding process, the end of the steel wire rope pulls the material transport assembly upward via a pull ring. The material transport assembly, through a functional block, lifts the entire lifting linkage mechanism upward. The cooperation between the lifting linkage mechanism and the main frame forms a double-layer lifting and telescopic structure, thereby enabling the material transport assembly to be transported to a higher position. This achieves adjustable and efficient overall device height, eliminating the need for manual handling, saving labor, avoiding the risk of safety accidents, and effectively meeting the requirements of material transport and construction progress in confined spaces.

[0019] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0020] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings are not scaled. Other drawings can be obtained by those skilled in the art based on these drawings.

[0021] Figure 1 This is a schematic diagram of one side of the structure of a high-efficiency material conveying device with a narrow opening in a confined space according to this utility model;

[0022] Figure 2 This is a schematic diagram of the other side of the structure of the efficient material conveying device with a narrow opening in a confined space according to this utility model;

[0023] Figure 3 This is a schematic diagram of the main frame structure of a high-efficiency material conveying device with a narrow opening in a confined space according to this utility model;

[0024] Figure 4 This is a schematic diagram of the lifting linkage mechanism in a high-efficiency material conveying device with a narrow opening in a confined space according to this utility model.

[0025] Figure 5 This is a schematic diagram of the material conveying group structure in a high-efficiency material conveying device with a narrow opening in a confined space, according to this utility model.

[0026] Figure label:

[0027] 1. Main frame; 11. I-beam; 12. Fixing frame; 13. Positioning rod; 14. Medium pulley; 15. Grounding plate; 16. Reserved hole; 2. Lifting linkage mechanism; 21. Bottom pulley; 22. Functional block; 23. Top pulley; 3. Material conveying group; 31. Material conveying platform; 32. Drive frame; 33. Hinge; 34. Pull rope; 35. Limiting plate; 36. Pull ring; 4. Limiting winch; 41. Base; 5. Steel wire rope. Detailed Implementation

[0028] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0029] A high-efficiency material handling device for confined spaces and narrow openings includes a main frame 1, a lifting linkage mechanism 2, and a material handling assembly 3. The main frame 1 is fixed to the ground, and the lifting linkage mechanism 2 is slidably disposed inside the main frame 1. The main frame 1 includes I-beams 11, a fixing frame 12, and positioning rods 13. The fixing frame 12 is attached to the ground, and ground-adhesive plates 15 are fixedly disposed on both sides of the fixing frame 12. The ground-adhesive plates 15 are attached to the ground and each has a pre-drilled hole 16. Workers can fix the ground-adhesive plates 15 to the ground by passing screws through the pre-drilled holes 16, thus achieving complete fixation between the fixing frame 12 and the ground. Two I-beams 11 are provided and fixed to the top side of the fixing frame 12. The lifting linkage mechanism 2 is slidably disposed between the two I-beams 11. The side groove constrains the lifting linkage mechanism 2. A limiting winch 4 is provided on one side of the bottom of the main frame 1. A base 41 is provided at the bottom of the limiting winch 4. The base 41 is fixedly installed on the top side of the end of the fixed frame 12. The base 41 is mainly used to fix the limiting winch 4. The output shaft of the limiting winch 4 is connected to a steel wire rope 5. The steel wire rope 5 can be wound and unwound by starting the limiting winch 4 in both forward and reverse directions. A pulley 14 is provided on one side of the top of the main frame 1. A positioning rod 13 is provided on one side of the top of the I-beam 11. The two ends of the positioning rod 13 are fixedly connected to the top side walls of the two I-beams 11 respectively. The pulley 14 is fixedly connected to the bottom side of the positioning rod 13. The positioning rod 13 can both increase the stability of the two I-beams 11 and be used to install the pulley 14.

[0030] The material conveying group 3 is slidably disposed inside the lifting linkage mechanism 2. The material conveying group 3 is mainly used for holding and transporting materials. The top and bottom sides of the lifting linkage mechanism 2 are respectively provided with a top pulley 23 and a bottom pulley 21. A pull ring 36 is provided at the top of the material conveying group 3. One end of the wire rope 5 is connected to the output shaft of the limiting winch 4, and the other end passes through the intermediate pulley 14, the bottom pulley 21, and the top pulley 23 in sequence before being fixedly connected to the pull ring 36. When the limiting winch 4 starts rotating forward, it will wind up the wire rope 5. The wire rope 5 will first pass through the top pulley 23, then the bottom pulley 21, and finally the intermediate pulley 14 before being transmitted to the limiting winch 4 for winding. During the winding process, the end of the wire rope 5 will pull the material conveying group 3 upward through the pull ring 36, thereby achieving the purpose of transporting materials upward by the material conveying group 3. This realizes the vertical transportation of materials in a closed and narrow space, improves the efficiency of material transfer, and helps to ensure operational safety.

[0031] The material conveying unit 3 mainly consists of a material conveying platform 31, a drive frame 32, and limiting plates 35. The pull ring 36 is fixedly installed on the top of the drive frame 32 and fixedly connected to the end of the wire rope 5. The material conveying platform 31 is a square frame and one end is hinged to the drive frame 32 via a hinge 33. The hinge 33 allows for folding between the material conveying platform 31 and the drive frame 32 when material conveying is not required, ensuring better flexibility during disassembly and turnover. The drive frame 32 is located inside the lifting linkage mechanism 2 and is slidably connected. Limiting plates 35 are fixedly installed at the upper and lower ends of both sides of the drive frame 32. The limiting plates 35 are all set to fit against the corresponding sides of the lifting linkage mechanism 2. Limiting plates 35 are set on both sides of the drive frame 32. The positioning plate 35 can clamp the sides of the lifting linkage mechanism 2, thereby constraining the drive frame 32 and preventing it from detaching from the inside of the lifting linkage mechanism 2. The width and thickness of the drive frame 32 are adapted to the width and thickness of the inside of the lifting linkage mechanism 2 to ensure the stability of the material conveying group 3 when it moves inside the lifting linkage mechanism 2 and to prevent the possibility of the material being thrown out. Both sides of the drive frame 32 are provided with pull ropes 34 of equal length. One end of the pull rope 34 is fixedly connected to the side wall of the drive frame 32, and the other end is fixedly connected to the side wall of the material conveying platform 31. The pull rope 34 can hold the material conveying platform 31. When the material is placed on the material conveying platform 31, the pull rope 34 will be under force, which will reduce the pressure on the hinge 33.

[0032] Functional blocks 22 are fixedly installed on both sides of the top of the lifting linkage mechanism 2. When the material conveying group 3 moves upward to the functional block 22 under the drive of the wire rope 5, the drive frame 32 will be blocked by the functional block 22. Under the action of the limit winch 4, the wire rope 5 will continue to wind up, and the material conveying group 3 will be lifted by the functional block 22 to move upward. With the cooperation of the lifting linkage mechanism 2 and the main frame 1, the two will be superimposed to form a double-layer lifting and telescopic structure, thereby realizing the transportation of the material conveying group 3 to a higher position and increasing practicality. The distance between the I-beams 11 is adapted to the width of the lifting linkage mechanism 2, and the width of the I-beams 11 in the groove is adapted to the thickness of the side of the lifting linkage mechanism 2, thereby ensuring that the lifting linkage mechanism 2 will not shake between the I-beams 11 and ensuring the stability of the lifting linkage mechanism 2 when moving up and down.

[0033] When the lifting linkage mechanism 2 is raised to its highest position, the intermediate pulley 14 will block the bottom pulley 21, which can prevent the lifting linkage mechanism 2 from detaching from the main frame 1. If it is necessary to reset the material conveying group 3, the limit winch 4 will be reversed to release the wire rope 5. Under the gravity of the material conveying group 3 and the lifting linkage mechanism 2, it will fall and reset naturally. Driven by the limit winch 4, the vertical conveying of materials in a narrow space can be effectively realized. This method is efficient and stable and no longer relies on manual handling, saving labor and avoiding the risk of safety accidents. It well meets the requirements of material conveying and construction progress in a limited space. The limit winch 4 (a winch is also called a hoist, a light and small lifting device that uses a drum to wind wire rope 5 or chain to lift or pull heavy objects. The winch can lift vertically, horizontally or inclinedly pull heavy objects) is existing technology. The specific structure and principle will not be described in detail here. The forward and reverse rotation and start and stop of the limit winch 4 can be controlled by the staff.

[0034] When materials need to be transported, the device is first transported to a narrow stairwell or below a reserved opening. After assembly, the device is completely fixed to the ground by screws through the reserved holes 16 of the ground plate 15. Then, the material transport platform 31 is unfolded to place the materials to be transported. Finally, the limit winch 4 is started to wind up the wire rope 5 to lift the material transport group 3 for material transport.

[0035] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Some parts and features of some embodiments may be included or replaced by parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A high-efficiency material conveying device with a confined space and narrow opening, characterized in that, The system includes a main frame, a lifting linkage mechanism, and a material conveying assembly. The main frame is fixed to the ground. The lifting linkage mechanism is slidably disposed inside the main frame. The material conveying assembly is slidably disposed inside the lifting linkage mechanism. A limiting winch is provided on one side of the bottom of the main frame. The output shaft of the limiting winch is connected to a steel wire rope. A pulley is provided on one side of the top of the main frame. A top pulley and a bottom pulley are provided on one side of the top and bottom of the lifting linkage mechanism, respectively. A pull ring is provided at the top of the material conveying assembly. One end of the steel wire rope is connected to the output shaft of the limiting winch, and the other end passes through the pulley, bottom pulley, and top pulley in sequence before being fixedly connected to the pull ring. Functional blocks are fixedly disposed on both sides of the inner top of the lifting linkage mechanism.

2. The efficient material conveying device with a narrow opening in a confined space according to claim 1, characterized in that, The main frame includes an I-beam channel steel, a fixed frame, and a positioning rod. The fixed frame is set against the ground. Two I-beam channel steels are provided and fixed to the top side of the fixed frame. A positioning rod is provided on one side of the top of the I-beam channel steel. The two ends of the positioning rod are fixedly connected to the top side walls of the two I-beam channel steels respectively. The pulley is fixedly connected to the bottom side of the positioning rod.

3. The efficient material conveying device with a narrow opening in a confined space according to claim 2, characterized in that, Both ends of the fixed frame are fixedly provided with ground-adhesive pieces, which are attached to the ground and each has a reserved hole.

4. The efficient material conveying device with a narrow opening in a confined space according to claim 1, characterized in that, The bottom of the limiting winch is provided with a base, which is fixedly mounted on the top side of the end of the fixed frame.

5. The efficient material conveying device with a narrow opening in a confined space according to claim 2, characterized in that, The distance between the I-beams is adapted to the width of the lifting linkage mechanism, and the width of the I-beams inside the channel is adapted to the thickness of the side of the lifting linkage mechanism.

6. The efficient material conveying device with a narrow opening in a confined space according to claim 1, characterized in that, The material conveying group mainly consists of a material conveying platform, a drive frame, and a limiting plate. The material conveying platform is a square frame and is hinged to the drive frame at one end via a hinge. The drive frame is located inside the lifting linkage mechanism and is slidably connected. The width and thickness of the drive frame are adapted to the width and thickness of the inner side of the lifting linkage mechanism. The pull ring is fixedly located on the top of the drive frame and fixedly connected to the end of the wire rope.

7. The efficient material conveying device with a narrow opening in a confined space according to claim 6, characterized in that, Limiting plates are fixedly installed at the upper and lower ends of both sides of the drive frame, and the limiting plates are all set to fit the sides of the corresponding lifting linkage mechanism.

8. The efficient material conveying device with a narrow opening in a confined space according to claim 6, characterized in that, Both sides of the drive frame are provided with pull ropes of equal length. One end of the pull rope is fixedly connected to the side wall of the drive frame, and the other end is fixedly connected to the side wall of the material conveying platform.

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