Hand-operated rotary arm hopper elevator

Abstract

The utility model discloses hand -operated rotary arm hopper elevator, hand -operated rotary arm hopper elevator includes: stand, pulley, hand -operated winch, fixed pulley, steel wire rope and rotary arm, pulley and stand along vertical direction sliding connection, hand -operated winch sets up on the stand, fixed pulley sets up on the stand, steel wire rope is connected with pulley and is set up fixed pulley and hand -operated winch connection upwards, rotary arm and pulley along horizontal direction rotation connection, and rotary arm is used for carrying hopper device. The technical scheme simplifies the structure of material hoisting and transfer equipment, uses hand -operated operation to replace traditional electric equipment, reduces the complexity and maintenance cost of equipment, improves the flexibility and convenience of operation simultaneously. The equipment has extensive application prospect in small -to -medium -sized production environment, especially is applicable to the scene that does not need high automation, to the operation simple and has the requirement of cost control.

Description

Technical Field

[0001] This utility model relates to the technical field of hand-cranked rotary arm bucket elevators, and more particularly to a hand-cranked rotary arm bucket elevator. Background Technology

[0002] In industrial production, warehousing and logistics, and small-scale processing scenarios, the lifting and transfer of materials are crucial for ensuring smooth workflows. This is especially true for granular, powdery, or lumpy materials (such as feed, ore fragments, and building materials), which require specialized equipment for vertical lifting and horizontal transfer between different locations. Currently, the mainstream material handling equipment on the market falls into two categories: one is electric automated lifting equipment, such as chain elevators and belt conveyors. While these devices can achieve continuous operation, their complex structure includes multiple precision components such as motors, reducers, and control systems. This results in high initial purchase costs and requires professional personnel for daily maintenance, leading to high maintenance expenses. Furthermore, they have strict requirements for power supply conditions, making them unsuitable for temporary outdoor work sites, small workshops, or environments without stable power supply. The other category consists of simple manual handling tools, such as manual hydraulic forklifts and fixed hopper cranes. Manual hydraulic forklifts, however, can only achieve short-distance horizontal transport. The fixed hopper hoist cannot achieve vertical lifting, making it difficult to meet the operational requirements of "ground loading and high unloading". Although the fixed hopper hoist can achieve vertical lifting through rope hoisting, the hoist is usually fixed in a single position. After the hopper is lifted, the horizontal unloading position cannot be adjusted. If it is necessary to transfer materials to docking devices in different directions (such as multiple storage bins or feed inlets of different production lines), the hopper must be pushed manually or the hoist position adjusted. The operation is cumbersome and the hopper is prone to tilting due to uneven force, causing material to spill. At the same time, the lifting process relies on manual pulling of ropes, which is not only labor-intensive, but also difficult to accurately control the lifting height, and is prone to safety hazards such as the hopper hitting the docking device.

[0003] Furthermore, traditional manual lifting equipment generally suffers from structural instability: most equipment lacks a stable sliding fit design between the lifting components (such as the hopper's carriage) and the supporting structure (such as the column). During lifting, excessive gaps or insufficient guidance can easily lead to jamming, resulting in uneven material lifting and even equipment vibration, increasing the risk of material spillage. Simultaneously, once the lifting height is fixed, existing equipment relies solely on rope tension or simple buckle structures to maintain positional stability. Over long-term use, the ropes are prone to fatigue and loosening, causing the hopper to slip, posing a serious safety hazard. In terms of flexibility, traditional equipment often has a fixed unloading position, unable to flexibly adjust the horizontal angle according to operational needs. When facing multi-station, multi-connection scenarios, frequent relocation of the entire unit is required, significantly reducing operational efficiency and failing to meet the material transport requirements of "low cost, high flexibility, and ease of operation" in small to medium-sized production environments. Therefore, the current material lifting and transfer field urgently needs a device with a simple structure, no electric drive required, convenient operation, high stability, and integrated "vertical lifting + horizontal transfer" capabilities to address the multiple pain points of traditional equipment in terms of cost, applicability, stability, and flexibility. Utility Model Content

[0004] One objective of this invention is to provide a hand-cranked rotary arm bucket elevator to address the multiple pain points of traditional equipment in terms of cost, applicability, stability, and flexibility.

[0005] To achieve the above objectives, this utility model provides a solution: a hand-cranked rotary arm bucket elevator includes: a column, a pulley, a hand-cranked winch, a fixed pulley, a wire rope, and a rotating arm; the pulley is slidably connected to the column in the vertical direction; the hand-cranked winch is mounted on the column; the fixed pulley is mounted on the column; the wire rope is connected to the pulley, winds upward around the fixed pulley, and connects to the hand-cranked winch; the rotating arm is rotatably connected to the pulley in the horizontal direction, and the rotating arm is used to support the bucket device. This technical solution simplifies the structure of material lifting and transfer equipment, uses hand-crank operation to replace traditional electric equipment, reduces the complexity and maintenance costs of the equipment, and improves the flexibility and convenience of operation.

[0006] Optionally, the hand-cranked rotary arm bucket elevator includes a first cantilever, a second cantilever, a first bearing, and a second bearing. The first cantilever and the second cantilever are respectively connected to opposite ends of the trolley. The first bearing is connected to the first cantilever, and the second bearing is connected to the second cantilever. The opposite ends of the rotary arm are respectively connected to the first bearing and the second bearing.

[0007] Optionally, the hand-cranked rotary bucket elevator also includes an indexing plate, a positioning pin, and a positioning arm. The indexing plate is connected to the first cantilever, the positioning arm is connected to one end of the rotating arm, and the positioning pin is threaded to the positioning arm. The indexing plate has multiple positioning holes arranged around the rotating arm. The positioning pin is used to insert into any of the positioning holes to limit the rotation of the rotating arm.

[0008] Optionally, multiple positioning holes are arranged around the perimeter in a 360-degree pattern.

[0009] Optionally, the hand-cranked rotary bucket elevator also includes fastening screws, which are threaded through the positioning arm and connected to the rotating arm.

[0010] Optionally, the hand-cranked swivel bucket elevator also includes a movable pulley, with a wire rope wound around the movable pulley and connected to the trolley via the movable pulley.

[0011] Optionally, the hand-cranked swivel bucket elevator also includes multiple limiting holes and limiting pins. The multiple limiting holes are arranged vertically on the column, and the limiting pin is inserted into one of the multiple limiting holes and supports the lower end of the trolley.

[0012] The beneficial effects of this utility model are as follows: This technical solution, through the design of a hand-cranked rotary arm bucket elevator, solves several problems in the material lifting and transfer process of traditional material transportation equipment. First, the sliding connection between the trolley and the column provides stability for material lifting, allowing the trolley to move freely up and down in the vertical direction, avoiding jamming caused by excessive or uneven resistance during material lifting, and improving the smoothness of the lifting process.

[0013] The combined operation of the hand-cranked winch and wire rope allows for precise manual control of material lifting height, avoiding the complex operation and high maintenance costs associated with automated equipment. Operators can easily lift materials using the hand-cranked winch and adjust the lifting height as needed to meet the requirements of different work scenarios. The swing arm design provides flexible material transfer capabilities. The swing arm allows the hopper device to rotate horizontally to a preset angle, ensuring that materials are accurately poured into the target location, avoiding material waste or uneven pouring caused by unreasonable equipment design. This design makes material transportation more efficient and highly adaptable.

[0014] Overall, this technical solution simplifies the structure of material lifting and transfer equipment, replacing traditional electric equipment with manual operation, thus reducing equipment complexity and maintenance costs while improving operational flexibility and convenience. This equipment has broad application prospects in small to medium-sized production environments, and is particularly suitable for scenarios that do not require high automation, prioritize simple operation, and have cost control requirements. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a front view structural schematic diagram of the hand-cranked rotary arm bucket elevator provided in this embodiment of the utility model;

[0017] Figure 2 This is a top view of the hand-cranked rotary arm bucket elevator provided in this embodiment of the utility model;

[0018] Figure 3 This is provided by the embodiment of the present utility model. Figure 1 A schematic diagram of the structure of region A in the middle.

[0019] Explanation of icon numbers:

[0020] 100 hand-cranked swivel arm bucket elevator, 110 column, 120 pulley, 130 hand-cranked winch, 140 fixed pulley;

[0021] 150 steel wire rope, 160 swing arm, 170 first cantilever, 180 second cantilever, 190 first bearing;

[0022] 111 Second bearing, 121 Indexing plate, 131 Positioning pin, 141 Positioning arm, 151 Positioning hole;

[0023] 161 Fastening screws, 171 Moving pulleys, 200 Hopper device. Detailed Implementation

[0024] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings, clearly and comprehensively demonstrating the technical solution. It should be noted that the listed embodiments are only a part of this utility model, and not all possible implementations. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] Please see Figures 1 to 3 As shown, Figure 1 This is a front view structural schematic diagram of the hand-cranked rotary arm bucket elevator 100 provided in this embodiment of the utility model. Figure 2 This is a top view schematic diagram of the hand-cranked rotary arm bucket elevator 100 provided in this embodiment of the utility model. Figure 3 This is provided by the embodiment of the present utility model. Figure 1 A schematic diagram of the structure of region A in the middle.

[0026] The hand-cranked swivel boom bucket elevator 100 in this embodiment is mainly used for lifting and transferring the bucket device 200 loaded with materials, so as to transport the materials from one location to another. The equipment consists of a column 110, a pulley 120, a hand-cranked winch 130, a fixed pulley 140, a wire rope 150, and a swivel boom 160, etc. Through the coordinated work of each part, the lifting and transfer of materials is completed.

[0027] First, the column 110 serves as the support for the elevator, providing a stable foundation for the equipment. The trolley 120, through a vertical sliding connection with the column 110, allows for free vertical movement. The design of the trolley 120 enables the equipment to slide smoothly upwards or downwards during material lifting, ensuring the stability and safety of the lifting process.

[0028] A hand-cranked winch 130 is mounted on the column 110 as a power source, driving the lifting of the equipment by manual rotation. A fixed pulley 140 is connected to the column 110, providing a support point for the wire rope 150. One end of the wire rope 150 is connected to the trolley 120, and the other end is connected to the hand-cranked winch 130 via the fixed pulley 140, forming a lifting power transmission system.

[0029] The rotating arm 160 is rotatably connected to the trolley 120 in a horizontal direction. The function of the rotating arm 160 is to support the hopper device 200 and to transfer materials through rotation. When the hopper device 200 is full of material, it is connected to the rotating arm 160. When the hand-cranked winch 130 is manually turned, the wire rope 150 is retracted, thereby driving the trolley 120 to move upward. After the trolley 120 moves upward to a certain height, it stops, and the hopper device 200 can then be rotated horizontally to a preset angle via the rotating arm 160 to pour the material into another docking device.

[0030] This technical solution, through the design of a hand-cranked rotary bucket elevator 100, solves several problems in the material lifting and transfer process of traditional material transportation equipment. First, the sliding connection between the trolley 120 and the column 110 provides stability for material lifting, allowing the trolley 120 to move freely up and down in the vertical direction. This avoids jamming caused by excessive or uneven resistance during material lifting, and improves the smoothness of the lifting process.

[0031] The coordinated operation of the hand-cranked winch 130 and the wire rope 150 allows for precise manual control of material lifting height, avoiding the complex operation and high maintenance costs associated with automated equipment. Operators can easily lift materials using the hand-cranked winch 130 and adjust the lifting height as needed to meet the requirements of different work scenarios. The swing arm 160 provides flexible material transfer functionality. The swing arm 160 allows the hopper device 200 to rotate horizontally to a preset angle, ensuring precise material pouring into the target location and avoiding material waste or uneven pouring caused by improper equipment design. This design makes material transportation more efficient and highly adaptable.

[0032] Overall, this technical solution simplifies the structure of material lifting and transfer equipment, replacing traditional electric equipment with manual operation, thus reducing equipment complexity and maintenance costs while improving operational flexibility and convenience. This equipment has broad application prospects in small to medium-sized production environments, and is particularly suitable for scenarios that do not require high automation, prioritize simple operation, and have cost control requirements.

[0033] The hand-cranked swivel bucket elevator 100 described in this embodiment comprises a core structure consisting of a column 110, a trolley 120, a hand-cranked winch 130, a fixed pulley 140, a wire rope 150, a swivel arm 160, a first cantilever 170, a second cantilever 180, a first bearing 190, and a second bearing 111. The trolley 120, as the core moving component, is vertically slidably connected to the column 110 via a slide rail (or groove), ensuring that the trolley 120 can only move stably up and down along the column 110, avoiding lateral deviation. The hand-cranked winch 130 is bolted to the lower part of the column 110, facilitating manual rotation by the operator. The fixed pulley 140 is installed at the top of the column 110, with its axis perpendicular to the sliding direction of the trolley 120, used to change the direction of force on the wire rope 150. One end of the wire rope 150 is fixedly connected to the hanging ring of the trolley 120, and the other end is wound upwards around the fixed pulley 140 and connected to the drum of the hand-cranked winch 130 to form a complete lifting transmission mechanism. The swing arm 160, as the hopper bearing component, is horizontally rotatably connected to the trolley 120 through the first cantilever 170 and the second cantilever 180: the first cantilever 170 and the second cantilever 180 are respectively fixed to the upper and lower opposite ends of the trolley 120 by welding, and the axes of the first cantilever 170 and the second cantilever 180 are on the same vertical plane; the inner ring of the first bearing 190 is interference-fitted with the free end of the first cantilever 170, the inner ring of the second bearing 111 is interference-fitted with the free end of the second cantilever 180, and the upper and lower ends of the swing arm 160 are welded and fixed to the outer rings of the first bearing 190 and the second bearing 111, respectively, so that the swing arm 160 can rotate flexibly in the horizontal direction around the axes of the two cantilever arms. In actual operation, the hopper device 200, filled with materials (such as granular raw materials, powdered materials, etc.), is connected to the middle hanging point of the rotating arm 160 via a hook. The operator rotates the handle of the hand-cranked winch 130 clockwise, causing the drum to rotate and winding up the wire rope 150. Under the guidance of the fixed pulley 140, the wire rope 150 pulls the trolley 120 upwards vertically along the column 110. When the trolley 120 rises to the preset height (such as the height of the feed inlet of the docking device), the hand-cranked winch 130 is stopped. At this time, the rotating arm 160 is pushed, causing it to drive the hopper device 200 to rotate horizontally around the axis of the first cantilever 170 and the second cantilever 180 until the discharge port of the hopper device 200 is aligned with the feed inlet of the docking device (such as the feed inlet of the storage silo, the feed conveyor belt of the production line, etc.). Finally, the material is poured out through the unloading structure of the hopper device 200 itself (such as a flap, valve, etc.), completing one lifting and unloading operation.

[0034] The hand-cranked jib bucket elevator 100 of this embodiment effectively solves the technical problems of traditional material lifting equipment, such as "single lifting direction and inflexible adjustment of unloading position," through reasonable structural design, and achieves the integrated technical effect of "vertical lifting + horizontal transfer." Specifically, traditional elevators (such as fixed-track elevators) can usually only lift materials vertically along a fixed path, and the unloading position is fixed. If it is necessary to transfer materials to docking devices in different directions, additional handling equipment is required, resulting in low operating efficiency and cumbersome operation. In this embodiment, through the "sliding connection between the trolley 120 and the column 110" and the "transmission structure of the wire rope 150-fixed pulley 140-hand-cranked winch 130," the stable vertical lifting of the bucket device 200 is achieved, solving the core requirement of "vertical material conveying." Moreover, the hand-cranked drive does not rely on electricity, making it suitable for operation scenarios without power supply (such as small workshops, temporary outdoor work sites, etc.), thus improving the applicability of the equipment. Meanwhile, the bearing connection structure between the first cantilever 170, the second cantilever 180, and the rotating arm 160 allows the rotating arm 160 to drive the hopper device 200 to rotate 360° flexibly in the horizontal direction (the specific rotation angle can be adjusted according to the workspace), solving the problem of "fixed unloading position". Materials can be transferred to docking devices in different directions without additional handling equipment, significantly simplifying the operation process and improving material transfer efficiency. Furthermore, the bearing design reduces the frictional resistance when the rotating arm 160 rotates, requiring only a small pushing force from the operator to adjust the hopper position, reducing operational intensity. Further, the symmetrical structure connecting the first cantilever 170 and the second cantilever 180 to opposite ends of the trolley 120 ensures force balance during the rotation of the rotating arm 160, preventing tilting or jamming due to uneven hopper weight, improving equipment stability and safety, effectively preventing material spillage during transfer, and reducing material waste and operational safety hazards. In summary, the technical solution of this embodiment achieves multiple technical effects such as "stable lifting, flexible transfer, no power required, and convenient operation" through structural optimization, which significantly improves the efficiency and applicability of material lifting operations.

[0035] This embodiment adds an indexing plate 121, a positioning pin 131, and a positioning arm 141 to the existing hand-cranked rotary bucket elevator 100 structure to achieve precise positioning of the rotating arm 160. The connection and function of each new component with the original structure are as follows: The indexing plate 121 adopts a circular metal disc structure and is fixedly connected to one end of the first cantilever 170; the positioning arm 141 is a strip-shaped metal component, one end of which is fixed to the end of the rotating arm 160 near the first cantilever 170 by welding or bolting, and the positioning arm 141 is provided with a positioning pin 131. 31. Fitting threaded hole; The positioning pin 131 adopts a bolt-type structure with a handle, and its external thread matches the threaded hole of the positioning arm 141. The axial movement of the positioning pin 131 can be achieved by rotating the handle; Multiple positioning holes 151 are evenly opened along the circumferential direction on the indexing plate 121. The diameter of the positioning hole 151 is adapted to the end diameter of the positioning pin 131, and the distribution center of the multiple positioning holes 151 coincides with the rotation center of the rotating arm 160, so that when the rotating arm 160 drives the positioning arm 141 to rotate, the positioning pin 131 can be aligned with any positioning hole 151. In actual operation, when the operator pushes the rotating arm 160 to rotate the hopper device 200 to the preset unloading angle (such as aligning with the feed inlet of the docking device), the handle of the positioning pin 131 is rotated clockwise, so that the end of the positioning pin 131 moves axially along the threaded hole of the positioning arm 141 and inserts into the corresponding positioning hole 151 of the indexing plate 121. At this time, the positioning pin 131 restricts the rotation of the positioning arm 141 through the cooperation between the positioning hole 151 and the indexing plate 121, thereby fixing the position of the rotating arm 160 and preventing the rotating arm 160 from shifting due to the weight of the material or external force during the unloading process. After the unloading is completed, the handle of the positioning pin 131 is rotated counterclockwise to pull the positioning pin 131 out of the positioning hole 151, which releases the restriction on the rotating arm 160 and pushes the rotating arm 160 back to the initial position or adjusts it to other unloading angles.

[0036] This embodiment effectively solves the technical problem of "the rotating arm 160 is prone to positional deviation and low unloading alignment accuracy" in the original hand-cranked rotary bucket elevator 100 by adding an indexing plate 121, a positioning pin 131, and a positioning arm 141. It achieves precise positioning and stable unloading of the rotating arm 160, further improving the operational reliability and unloading accuracy of the equipment. Specifically, in the original structure, the rotating arm 160 is rotated solely by bearing connection. Although the angle can be flexibly adjusted, during the unloading process, changes in the gravity distribution of the material inside the hopper device 200 or slight external collisions may cause the rotating arm 160 to rotate slightly, resulting in misalignment between the hopper outlet and the docking device inlet, leading to problems such as material spillage and reduced feeding efficiency of the docking device. In this embodiment, the multiple positioning holes 151 of the indexing plate 121 correspond to different preset unloading angles. The operator can rotate the rotating arm 160 to the corresponding angle according to the position of the docking device, and then use the positioning pin 131 to insert into the positioning hole 151 to achieve rigid fixation, completely limiting the offset of the rotating arm 160. This ensures that the hopper outlet and the docking device inlet remain aligned during the unloading process, significantly reducing material waste and improving unloading efficiency. Meanwhile, the positioning pin 131 adopts a threaded connection, which is not only convenient to operate, but also has a small clearance between the positioning pin 131 and the positioning hole 151, resulting in high positioning accuracy and meeting the precise requirements of different docking devices for unloading angle. The multiple positioning holes 151 evenly distributed on the indexing plate 121 provide multiple angle selections, allowing the equipment to adapt to docking devices in various positions without frequent adjustments to the installation position of the docking devices, thus expanding the equipment's applicable scenarios. Furthermore, this structure achieves positioning function through simple mechanical component cooperation, requiring no additional power drive, maintaining consistency with the original hand-cranked drive method. This balances the equipment's economy and reliability, avoiding equipment downtime due to electronic positioning component (such as sensor, motor) failure, and further improving the equipment's stability in complex operating environments. In summary, the technical solution of this embodiment, through low-cost mechanical structure optimization, solves the positioning problem of the rotating arm 160 without changing the core function of the original equipment, achieving the technical effects of "precise angle adjustment, stable positioning and unloading, and multi-scenario adaptation," significantly improving the operational quality and practicality of the hand-cranked rotating arm bucket elevator 100.

[0037] This embodiment is based on the above-mentioned hand-cranked rotary arm bucket elevator 100 containing indexing plate 121, positioning pin 131, and positioning arm 141. The arrangement of positioning holes 151 on the indexing plate 121 is further optimized. Multiple positioning holes 151 are evenly arranged around the circumference of the indexing plate 121 in a 360-degree circle to achieve the full-angle positioning function of the rotating arm 160. Specifically, the indexing plate 121 is still a circular metal plate that is adapted to the first cantilever 170. Its center is fixedly connected to the first cantilever 170 and the plate surface is kept horizontal. In the circumferential area of ​​the indexing plate 121 (near the edge of the plate), multiple positioning holes 151 are opened around its center in a clockwise direction. The central angle of two adjacent positioning holes 151 is equal (e.g., when 24 positioning holes 151 are set, the central angle of adjacent holes is 15°; when 36 positioning holes 151 are set, the central angle of adjacent holes is 10°). The diameter and depth of all positioning holes 151 are consistent to ensure precise adaptation with the end of the positioning pin 131. The connection method between the positioning arm 141 and the rotating arm 160, and the threaded connection structure between the positioning pin 131 and the positioning arm 141 are the same as those in the previous embodiment. When the rotating arm 160 drives the positioning arm 141 to rotate around the axis of the first cantilever 170, no matter which angle the rotating arm 160 rotates to, the positioning pin 131 on the positioning arm 141 can be moved axially by rotating the handle and inserted into the positioning hole 151 at the corresponding position of the indexing plate 121 to fix the rotating arm 160 at that angle. If it is necessary to adjust to other angles, simply pull out the positioning pin 131, continue to rotate the rotating arm 160 to the target angle, and then insert the positioning pin 131. For example, when the docking device is located in front of (0°), to the right (90°), behind (180°), or to the left (270°) of the hoist in the operation scenario, the operator can push the rotating arm 160 to rotate to the corresponding angle in sequence, and fix it by inserting the positioning pin 131 into the corresponding positioning hole 151. There is no need to adjust the overall position of the equipment due to the incomplete arrangement of the positioning holes 151, which can adapt to the unloading needs in different directions.

[0038] This embodiment is based on the above-mentioned hand-cranked rotary arm bucket elevator 100 containing indexing plate 121, positioning pin 131, and positioning arm 141. A fastening screw 161 is added to enhance the connection stability between the positioning arm 141 and the rotating arm 160. The specific structure and assembly method are as follows: The positioning arm 141 is still a strip-shaped metal component adapted to connect with the rotating arm 160. At the end region where the positioning arm 141 connects to the rotating arm 160, 2-4 through mounting holes are opened in a direction perpendicular to the radial direction of the rotating arm 160 (the hole diameter matches the nominal diameter of the fastening screw 161, and the mounting holes are symmetrically distributed to ensure balanced force). At the end of the rotating arm 160 near the first cantilever 170, corresponding to the mounting hole position, an internal thread hole matching the external thread of the fastening screw 161 is pre-machined (the thread depth is greater than the screw-in length of the fastening screw 161 to ensure connection strength). During assembly, first, align the connecting end of the positioning arm 141 with the outer wall of the rotating arm 160, aligning the mounting holes of the positioning arm 141 with the internal threaded holes of the rotating arm 160. Then, pass the fastening screws 161 through the mounting holes of the positioning arm 141 and screw them into the internal threaded holes of the rotating arm 160 until the heads of the fastening screws 161 are tightly pressed against the surface of the positioning arm 141 (a preset torque, such as 15-20 N·m, can be applied with a torque wrench to ensure a tight connection), thus achieving a detachable rigid connection between the positioning arm 141 and the rotating arm 160. During equipment operation, the positioning arm 141 rotates synchronously with the rotating arm 160. The fastening screw 161 can effectively transmit the force between the positioning arm 141 and the rotating arm 160 (such as the axial force when the positioning pin 131 is inserted into the positioning hole 151, the centrifugal force when the rotating arm 160 rotates, etc.), preventing relative displacement between the positioning arm 141 and the rotating arm 160. If the positioning arm 141 needs to be maintained or its position adjusted in the future, the positioning arm 141 can be disassembled simply by loosening the fastening screw 161. The operation is convenient and does not damage the main structure of the rotating arm 160.

[0039] This embodiment is based on the aforementioned hand-cranked swivel bucket elevator 100 (including core components such as column 110, trolley 120, hand-cranked winch 130, fixed pulley 140, and wire rope 150), with the addition of a movable pulley 171 to optimize the lifting transmission system. Its specific structure and assembly logic are as follows: The movable pulley 171 is made of high-strength alloy material, and the outer side of the wheel body is provided with an annular rope groove adapted to the wire rope 150. The center of the wheel body is connected to the wheel axle through a bearing to form a flexible rotating component; a U-shaped bracket is welded to the center of the bottom of the trolley 120, and the two ends of the wheel axle of the movable pulley 171 are fixedly connected to the two side walls of the U-shaped bracket, so that the movable pulley 171 is suspended below the trolley 120 and can rotate freely around the wheel axle. The connection path of the wire rope 150 is adjusted as follows: First, one end of the wire rope 150 is fixed to the pre-set fixed attachment point in the middle of the column 110 (located above the hand winch 130 and below the fixed pulley 140) with a rope clamp. Then, the wire rope 150 is lowered and passes through the rope groove of the movable pulley 171, then extends upward and passes through the fixed pulley 140 installed on the top of the column 110. Finally, the other end of the wire rope 150 is wound and connected to the drum of the hand winch 130 (the winding method is the same as in the previous embodiment, ensuring that the wire rope 150 can be stably wound or released when the drum rotates). When the operator turns the hand-cranked winch 130, the drum retracts the wire rope 150. Under the guidance of the fixed pulley 140, the wire rope 150 is pulled upward. At this time, the movable pulley 171, due to the bidirectional tension of the wire rope 150, will drive the trolley 120 to rise vertically along the column 110. Due to the mechanical characteristics of the movable pulley 171, the pulling force applied by the operator through the hand-cranked winch 130 only needs to overcome half of the total weight of the hopper device 200, the material, and the trolley 120 to achieve stable lifting. The specific labor-saving effect can be further adjusted according to the number of movable pulleys 171 (this embodiment adopts a single movable pulley 171 structure. If further labor saving is required, a set of movable pulleys 171 can be added, but the corresponding wire rope 150 winding method must be matched). In actual operation, even if the hopper is full of high-density materials (such as metal particles, ore fragments, etc.), the operator does not need to apply excessive force to complete the lifting action by turning the crank. Moreover, the movable pulley 171 rises and falls synchronously with the trolley 120, without adding extra resistance to the operation of the equipment.

[0040] This embodiment is based on the aforementioned hand-cranked swivel bucket elevator 100 (including core components such as column 110, trolley 120, hand-cranked winch 130, fixed pulley 140, and wire rope 150), with the addition of a movable pulley 171 to optimize the lifting transmission system. Its specific structure and assembly logic are as follows: The movable pulley 171 is made of high-strength alloy material, and the outer side of the wheel body is provided with an annular rope groove adapted to the wire rope 150. The center of the wheel body is connected to the wheel axle through a bearing to form a flexible rotating component; the trolley 120 is welded with a U-shaped bracket, and the two ends of the wheel axle of the movable pulley 171 are fixedly connected to the two side walls of the U-shaped bracket, so that the movable pulley 171 is suspended on the trolley 120 and can rotate freely around the wheel axle. The connection path of the wire rope 150 is adjusted as follows: First, one end of the wire rope 150 is fixed to the pre-set fixed attachment point in the middle of the column 110 (located above the hand winch 130 and below the fixed pulley 140) with a rope clamp. Then, the wire rope 150 is lowered and passes through the rope groove of the movable pulley 171, then extends upward and passes through the fixed pulley 140 installed on the top of the column 110. Finally, the other end of the wire rope 150 is wound and connected to the drum of the hand winch 130 (the winding method is the same as in the previous embodiment, ensuring that the wire rope 150 can be stably wound or released when the drum rotates). When the operator turns the hand-cranked winch 130, the drum retracts the wire rope 150. Under the guidance of the fixed pulley 140, the wire rope 150 is pulled upward. At this time, the movable pulley 171 is pulled vertically along the column 110 by the bidirectional tension of the wire rope 150. Due to the mechanical characteristics of the movable pulley 171, the pulling force applied by the operator through the hand-cranked winch 130 only needs to overcome half of the total weight of the hopper device 200, the material and the trolley 120 to achieve stable lifting. The specific labor-saving effect can be further adjusted according to the number of movable pulleys 171 (this embodiment adopts a single movable pulley 171 structure. If further labor saving is required, a set of movable pulleys 171 can be added, but the corresponding wire rope 150 winding method must be matched). In actual operation, even if the hopper is full of high-density materials (such as metal particles, ore fragments, etc.), the operator does not need to apply excessive force to complete the lifting action by turning the crank. Moreover, the movable pulley 171 rises and falls synchronously with the trolley 120, without adding extra resistance to the operation of the equipment.

[0041] This embodiment is based on the aforementioned hand-cranked rotary arm bucket elevator 100 with movable pulley 171, with the addition of multiple limiting holes and limiting pins to enhance the stability of the trolley 120 at a fixed height. Its specific structure and working logic are as follows: The multiple limiting holes are all cylindrical through holes, uniformly drilled along the vertical direction of the column 110 on the side wall of the column 110 near the trolley 120 (the spacing between adjacent limiting holes is set according to common unloading height requirements, such as 10cm-20cm, and the hole diameter is uniform to ensure compatibility with the limiting pins). The axes of the limiting holes are all perpendicular to the side wall of the column 110, and the hole depth penetrates the side wall of the column 110 (or penetrates 3cm-5cm into the column 110 to ensure sufficient support after the limiting pin is inserted); the limiting pin adopts a cylindrical metal rod structure, with a round handle at one end for easy gripping (the handle diameter is larger than the limiting hole diameter to prevent the limiting pin from being fully inserted into the column 110), and the other end is a smooth arc end (to reduce frictional resistance during insertion). The diameter of the limiting pin rod is clearance-fitted with the limiting hole diameter to ensure that the limiting pin can be flexibly inserted into or pulled out of the limiting hole. A rectangular metal baffle is welded to the lower end face of the trolley 120 near the column 110 (the height of the baffle is slightly larger than the diameter of the limiting hole, and the width is adapted to the width of the trolley 120). When the trolley 120 rises vertically along the column 110 to a preset fixed height (such as the height corresponding to the feed port of the docking device), the metal baffle at the lower end of the trolley 120 will be aligned with the height of a limiting hole on the column 110. At this time, the operator inserts the limiting pin from the outside of the column 110 into the limiting hole. The inner end of the limiting pin will extend to the inside of the column 110 and press against the bottom of the metal baffle at the lower end of the trolley 120, forming vertical support for the trolley 120. At the same time, in conjunction with the hand winch 130 to gather and fix the wire rope 150, the trolley 120 is kept stable at the fixed height under the dual action, preventing the trolley 120 from sliding downward due to its own weight or material impact. When the height of the trolley 120 needs to be adjusted, simply pull out the limiting pin to release the top restraint on the trolley 120, and then release or retract the steel wire rope 150 by rotating the hand winch 130. This will drive the trolley 120 to move vertically along the column 110 to the new height. Then, insert the limiting pin into the limiting hole of the corresponding height to fix the trolley 120 again.

[0042] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0043] Furthermore, when an element is referred to as 'fixed to' or 'set on' another element, it may be directly attached to that element, or there may be other intervening elements between them. When an element is referred to as 'connected to' another element, it can be directly connected to the other element or indirectly connected to the other element through an intervening element.

[0044] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, the designation of features such as "first" and "second" can either explicitly express or imply the presence of at least one such feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0045] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A hand-cranked rotary arm bucket elevator, characterized in that, The hand-cranked rotary arm bucket elevator includes: Columns; A trolley is slidably connected to the column in the vertical direction; A hand-cranked winch is mounted on the column. A fixed pulley is installed on the column; A steel wire rope, connected to the pulley, is wound upwards around the fixed pulley and connected to the hand-cranked winch; and A rotating arm is rotatably connected to the trolley in the horizontal direction, and the rotating arm is used to support the hopper device.

2. The hand-cranked rotary arm bucket elevator according to claim 1, characterized in that, The hand-cranked swivel arm bucket elevator includes a first cantilever, a second cantilever, a first bearing, and a second bearing. The first cantilever and the second cantilever are respectively connected to the opposite ends of the trolley. The first bearing is connected to the first cantilever, and the second bearing is connected to the second cantilever. The opposite ends of the swivel arm are respectively connected to the first bearing and the second bearing.

3. The hand-cranked rotary arm bucket elevator according to claim 2, characterized in that, The hand-cranked rotary bucket elevator also includes an indexing plate, a positioning pin, and a positioning arm. The indexing plate is connected to the first cantilever, the positioning arm is connected to one end of the rotating arm, and the positioning pin is threaded to the positioning arm. The indexing plate has multiple positioning holes arranged around the rotating arm. The positioning pin is used to be inserted into any of the positioning holes to restrict the rotation of the rotating arm.

4. The hand-cranked rotary arm bucket elevator according to claim 3, characterized in that, The multiple positioning holes are arranged in a 360-degree circle.

5. The hand-cranked rotary arm bucket elevator according to claim 3, characterized in that, The hand-cranked rotary bucket elevator also includes fastening screws, which are threaded through the positioning arm and connected to the rotating arm.

6. The hand-cranked rotary arm bucket elevator according to claim 1, characterized in that, The hand-cranked swivel bucket elevator also includes a movable pulley, the wire rope is wound around the movable pulley, and the wire rope is connected to the trolley through the movable pulley.

7. The hand-cranked rotary arm bucket elevator according to claim 1, characterized in that, The hand-cranked rotary arm bucket elevator also includes multiple limiting holes and limiting pins. The multiple limiting holes are arranged vertically on the column, and the limiting pin is inserted into one of the multiple limiting holes and supports the lower end of the trolley.

Images