Movable screw conveyer

Abstract

The utility model discloses a movable spiral conveyor, and belongs to the technical field of material conveying. The device comprises a spiral conveying mechanism, a moving mechanism, a driving control assembly and a positioning assembly, a spiral conveyor is driven by a spiral motor to complete material conveying, a chain wheel and a chain are driven by a moving motor to drive the conveyor to move along a track, and accurate positioning is achieved through a travel switch. The controller integrally controls cooperative operation of the spiral motor and the moving motor, and automatic connection of conveying and moving is achieved. The problems that a traditional fixed type spiral conveyor needs to be manually disassembled, positioning is not accurate, operation is complex and the like in the intermittent fixed-point conveying process are solved, through the automatic moving and positioning functions, the conveying efficiency is remarkably improved, the positioning precision is ensured, and manual intervention and operation risks are reduced. The device is simple in structure, reliable in control and particularly suitable for material conveying occasions needing to be periodically moved out of an operation area.

Description

Technical Field

[0001] This utility model provides a conveyor, and particularly relates to a mobile screw conveyor. Background Technology

[0002] Screw conveyors, as key equipment in the material conveying field, are mainly used for the continuous or intermittent conveying of powdery and granular materials. For example, in the calcination process of gypsum powder, materials need to be quantitatively conveyed from the silo to the calcination furnace. Traditional screw conveyors are usually driven by a screw motor to rotate the screw shaft, and the screw blades push the material from the inlet to the outlet. Both ends are fixed by bearing seats to maintain structural stability. However, in scenarios requiring intermittent fixed-point conveying, traditional equipment is mostly a fixed structure, which cannot be quickly moved out of the work area after a single conveying. It requires manual disassembly or overall handling, resulting in low efficiency, insufficient positioning accuracy, and operational safety hazards.

[0003] The existing fixed design of screw conveyors has significant shortcomings: First, the equipment cannot move autonomously, requiring manual intervention for removal after each conveying operation, severely slowing down production; second, it lacks a precise positioning mechanism, and manual resetting easily introduces positional deviations, affecting the sealing of the calcining furnace and the stability of the process; third, the control function is limited, unable to coordinate the automated connection between conveying and moving actions, resulting in high operational complexity. This application addresses these problems by integrating a movable track base, a pulley sliding mechanism, and a linkage control component to achieve automated reciprocating movement and precise positioning of the conveyor. Simultaneously, a controller coordinates the collaborative operation of the screw conveyor and the moving motor, completely eliminating the need for manual handling and significantly improving the efficiency, accuracy, and safety of intermittent fixed-point conveying. Utility Model Content

[0004] In order to solve the above problems, this application provides a mobile screw conveyor, which solves the problems of fixed equipment, low efficiency, inaccurate positioning and safety hazards of traditional equipment.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a mobile screw conveyor, comprising:

[0006] The screw conveyor mechanism is driven by a screw motor through a coupling. The two ends of the screw conveyor are fixed by bearing seats, with a feed inlet at the top and a discharge outlet at the bottom.

[0007] The moving mechanism includes four sets of pulleys fixed below the screw conveyor, a track and a track base that cooperate with the pulleys, the track being installed on the upper surface of the track base, and the pulleys being slidably connected to the track.

[0008] The drive control assembly includes a moving motor, a sprocket, a chain, and a controller. The moving motor is fixed to the side of the screw conveyor, the sprocket is installed at the output end of the moving motor and meshes with the chain, and the chain is fixed to the side of the rail base.

[0009] The positioning component includes limit switches disposed at both ends of the track, the limit switches being electrically connected to the controller;

[0010] The controller is connected to the screw motor, the moving motor and the limit switch respectively, and is used to control the material conveying and reciprocating movement of the screw conveyor along the track. When the pulley triggers the limit switch, the controller automatically stops the moving motor.

[0011] Preferably, the track base is a rectangular frame structure, the track is symmetrically arranged along its length, and the four sets of pulleys are divided into front and rear sets, with two pulleys in each set arranged parallel to each other along the width of the track.

[0012] Preferably, the meshing position of the sprocket and the chain is located on the same side of the rail base. When the sprocket is driven to rotate by the moving motor, the movement of the screw conveyor is realized through the fixed connection between the chain and the rail base.

[0013] Preferably, the limit switch is linked to the pulley by mechanical triggering or photoelectric sensing to limit the movement range of the screw conveyor.

[0014] Preferably, the controller integrates manual and automatic control modes and can independently adjust the speed of the screw motor and the start-stop sequence of the moving motor.

[0015] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0016] This device solves the technical shortcomings of existing screw conveyors, such as frequent manual removal of equipment, insufficient positioning accuracy, and complex operation during intermittent fixed-point conveying. Through the integrated design of screw conveying mechanism, moving mechanism, drive control components, and positioning components, and by using a controller to control the screw motor and moving motor in linkage, the screw conveyor automatically reciprocates along the track after completing material conveying. With the precise stopping effect of the limit switch on the track base, it achieves automatic positioning of the conveying position without intervention. At the same time, the sliding connection structure of four sets of pulleys and tracks replaces manual handling, and the fixed meshing transmission of sprockets and chains ensures movement stability. The manual and automatic mode switching of the controller further optimizes the operating efficiency, ultimately achieving automated operation of integrated conveying and moving, significantly improving the accuracy, safety, and production efficiency of intermittent fixed-point material conveying.

[0017] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0018] Figure 1 This is a front perspective view of the mobile screw conveyor of this utility model.

[0019] Figure 2 This is a flowchart illustrating the structure of the controller section of the mobile screw conveyor of this utility model.

[0020] As shown in the figure:

[0021] 1. Screw motor; 2. Coupling; 3. Moving motor; 4. Bearing housing; 5. Feed inlet; 6. Screw conveyor; 7. Discharge outlet; 8. Rail base; 9. Rail; 10. Pulley; 11. Sprocket; 12. Chain; 13. Limit switch; 14. Controller. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] like Figure 1As shown, a mobile screw conveyor is characterized by a coordinated configuration of a screw conveying mechanism, a moving mechanism, a drive control component, and a positioning component. The screw conveying mechanism is driven by a screw motor 1 via a coupling 2, and its two ends are fixed by bearing seats 4. An inlet 5 is located at the top, and an outlet 7 is located at the bottom. The moving mechanism includes four sets of pulleys 10, rails 9, and rail bases 8. The pulleys 10 are fixed below the screw conveyor 6 and slidably connected to the rails 9, which are mounted on the upper surface of the rail base 8. The drive control component includes a moving motor. 3. Sprocket 11, chain 12, and controller 14; the moving motor 3 is fixed to the side of the screw conveyor 6; the sprocket 11 and chain 12 mesh and are fixed to the side of the rail base 8; the positioning component includes limit switches 13 at both ends of the rail 9, which are electrically connected to the controller 14; the controller 14 integrates the linkage control logic of the screw motor 1, the moving motor 3, and the limit switches 13 to realize the automation of material conveying and reciprocating movement along the rail 9; when the pulley 10 triggers the limit switch 13, the controller 14 automatically stops the moving motor 3 to ensure accurate positioning and safe operation.

[0026] In this embodiment, the screw conveyor mechanism drives the screw conveyor 6 via the screw motor 1 to achieve continuous material conveying, maintaining the core operational capabilities of a traditional screw conveyor. The moving mechanism, through the sliding engagement of four sets of pulleys 10 with the track 9 and the frame support of the track base 8, completely replaces manual handling, allowing the screw conveyor 6 to automatically move out of the work area along the track 9 after each conveying cycle, avoiding efficiency losses and safety hazards caused by manual disassembly. The drive control component, through the fixed meshing transmission of the sprocket 11 and chain 12, combined with the directional drive of the moving motor 3, ensures the stability and controllability of the conveyor's movement process, while simultaneously controlling... The controller 14 provides time-sequential control of the screw motor 1 and the moving motor 3, enabling seamless connection between conveying and moving actions and reducing operational complexity. The positioning component, through the linkage between the limit switches 13 at both ends of the track 9 and the controller 14, automatically cuts off the power to the moving motor 3 when the pulley 10 triggers the limit switch, eliminating the positional deviation caused by manual reset and ensuring that the conveyor accurately stops at the preset work position. The overall solution, through the synergistic effect of each component, expands the single conveying function of traditional fixed equipment into a fully automated "convey-remove-reset" process, significantly improving the efficiency, accuracy, and safety of intermittent fixed-point operations, while reducing the cost of manual intervention and the risk of equipment maintenance.

[0027] like Figure 1 and Figure 2As shown, the track base 8 is a rectangular frame, typically made of high-strength steel to ensure the overall structural load-bearing capacity and stability. Its length, width, and height can be customized according to actual working conditions; for example, in small material conveying scenarios, a specification of 2000mm×1000mm×200mm can be selected. The track 9 generally uses standard I-beams or channel steel, symmetrically arranged along the length of the track base 8 to ensure smooth operation of the pulleys 10. Common height and width models for I-beam tracks include 100mm×50mm and 150mm×75mm. The four sets of pulleys 10 are divided into two groups, front and rear, with two pulleys in each group parallel to the width direction of the track 9. The pulleys are mostly made of nylon or polyurethane, featuring wear resistance and a low coefficient of friction. Their diameter is generally between 100mm and 200mm, and can be selected according to the track specifications. The meshing position of the sprocket 11 and the chain 12 is... On the same side as the rail base 8, the sprocket is generally made of 45# steel and hardened to improve wear resistance and strength. Common tooth counts include 20, 25, and 30 teeth. The chain can be a roller chain, such as 08B, 10B, or 12B models. When the moving motor 3 drives the sprocket 11 to rotate, the screw conveyor 6 moves stably by fixing the chain 12 to the rail base 8. The limit switch 13 is linked to the pulley 10 through mechanical triggering or photoelectric induction. The mechanically triggered limit switch can be a micro switch, while the photoelectric induction type can use a diffuse reflection photoelectric sensor. Both can flexibly limit the movement range. The controller 14 supports manual and automatic modes and generally uses a PLC controller, such as Siemens S7-200 or Mitsubishi FX1N series. It can independently adjust the speed of the screw motor 1 and the start / stop sequence of the moving motor 3 to adapt to different working conditions and improve the operational flexibility and adaptability of the equipment.

[0028] In this implementation scheme, the screw motor 1 of the screw conveyor mechanism can be a three-phase asynchronous motor with a power range of 1.1kW-7.5kW, selected according to the material conveying capacity and resistance; the coupling 2 generally adopts a flexible pin coupling, the specifications of which are determined according to the motor power and shaft diameter. For example, for a 3kW motor, an LXM type flexible pin coupling with a shaft diameter of 14mm-18mm can be selected; the pipe diameter and screw blade diameter of the screw conveyor 6 need to be determined according to the material characteristics. Common pipe diameters are 100mm, 150mm, 200mm, etc., and the screw blade diameter matches the pipe diameter, with a blade thickness generally between 5mm and 10mm; the bearing housing 4 adopts a split bearing housing for easy installation and maintenance, and the UCFC series can be selected, suitable for screw shafts of different diameters; the dimensions of the inlet 5 and outlet 7 are designed according to the material flow rate and conveying requirements, generally circular or square, with the circular inlet diameter being 1mm. The length of the square discharge port is between 200mm and 400mm, with a side length between 50mm and 300mm. The installation positions of the four sets of pulleys 10 of the moving mechanism need to be precisely adjusted to ensure good fit with the track 9. The horizontal and vertical tolerances of the pulleys should be controlled within ±1mm. The power of the moving motor 3 of the drive control component is generally between 0.75kW and 2.2kW. The transmission ratio between the sprocket 11 and the chain 12 can be designed according to the actual moving speed requirements, usually between 1:1 and 3:1. The installation position of the limit switch 13 of the positioning component needs to be accurate, and its triggering accuracy can reach ±2mm to ensure that the moving range of the screw conveyor 6 is precise and controllable. The control program of the controller 14 needs to be written according to the specific process flow to achieve precise start and stop control and speed adjustment of the motor. Its control accuracy can reach ±0.5%, and the response time is less than 0.1s, thereby effectively improving the overall performance and reliability of the equipment.

[0029] When in use, the implementation methods of the existing technical solutions and means are as follows: In terms of installation, the rail base needs to be fixed to the ground or working platform with anchor bolts to ensure the stability of the structure; the pulley is installed at the bottom of the screw conveyor and cooperates with the rail to achieve a sliding connection. The installation of the pulley needs to ensure the perpendicularity and coaxiality with the rail, which is generally achieved through precise machining and adjustment. At the same time, grease can be added at the contact point between the pulley and the rail to reduce the coefficient of friction.

[0030] In a screw conveyor mechanism, the screw motor and the screw conveyor are connected by a coupling. The selection of the coupling needs to be determined based on the motor power and the torque of the screw shaft. During installation, the coaxiality of the two shafts must be ensured. Typically, a laser alignment instrument is used for precise alignment, and the error is controlled within the specified range. The bearing housing is used to support the screw shaft, and its installation position must be accurate to ensure the horizontality of the screw shaft. The common installation method is to fix the bearing housing to the frame of the screw conveyor using fastening bolts, and to fine-tune the position of the bearing housing by adjusting shims to meet the installation accuracy requirements.

[0031] In the moving mechanism, the sprocket is connected to the output shaft of the moving motor, and the chain passes around the sprocket and is fixed to the base of the track. This chain drive method is widely used in industry. Its installation requires ensuring that the chain tension is appropriate, which is generally achieved by a tensioning device or by adjusting the position of the sprocket. Limit switches are installed at both ends of the track, and their positions can be finely adjusted by adjusting the brackets to ensure that the screw conveyor is in the accurate stopping position when the pulley triggers the limit switch. During installation, the triggering sensitivity of the limit switch must be ensured, and multiple adjustments are usually made to determine the optimal position.

[0032] During use, first place the screw conveyor on the rail using pulleys, ensuring proper fit between it and the rail base; connect the power supply, connecting the screw motor, moving motor, and controller to the corresponding power supply system, and set the parameters according to equipment requirements, such as the screw motor speed and the moving motor running time; in automatic mode, start the controller, and the screw conveyor begins material conveying. Simultaneously, the moving motor drives the sprocket to rotate, moving the screw conveyor along the rail via the chain. When the pulley triggers the limit switch, the controller automatically stops the moving motor, completing one material conveying and movement cycle; manual mode allows the operator to individually control the start and stop of the screw motor and moving motor as needed, suitable for equipment debugging or special working conditions.

[0033] Throughout the operation, the screw conveyor's screw blades rotate continuously, pushing the material from the inlet to the outlet. Its conveying capacity depends on the speed of the screw blades and the characteristics of the material. The moving mechanism achieves smooth movement of the screw conveyor through chain drive. The selection of sprockets and chains needs to be determined based on the moving speed and load requirements. The controller, as the core control unit, can use a mature PLC or microcontroller control system on the market. Through preset programs, it achieves precise control of the motor and signal reception and processing of limit switches, ensuring the automated operation and precise positioning of the entire device, thus forming a complete material conveying and moving solution to meet the needs of intermittent fixed-point conveying.

[0034] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A mobile screw conveyor, characterized in that The utility model relates to a spiral conveying mechanism, which comprises a spiral motor (1) driving a spiral conveyor (6) through a coupling (2), both ends of the spiral conveyor (6) being fixed through bearing seats (4), an upper feeding port (5) being arranged on the spiral conveyor (6), and a lower discharging port (7) being arranged on the spiral conveyor (6). The utility model also comprises a moving mechanism, which comprises four groups of pulleys (10) fixed below the spiral conveyor (6), a track (9) cooperating with the pulleys (10), and a track base (8), the track (9) being arranged on the upper surface of the track base (8), and the pulleys (10) being slidably connected with the track (9). The utility model also comprises a driving control assembly, which comprises a moving motor (3), a sprocket (11), a chain (12), and a controller (14), the moving motor (3) being fixed on the side of the spiral conveyor (6), the sprocket (11) being arranged on the output end of the moving motor (3) and being engaged with the chain (12), and the chain (12) being fixed on the side of the track base (8). The utility model also comprises a positioning assembly, which comprises travel switches (13) arranged at the front and rear ends of the track (9), the travel switches (13) being electrically connected with the controller (14). The controller (14) is connected with the spiral motor (1), the moving motor (3), and the travel switches (13) respectively, and is used for controlling the material conveying of the spiral conveyor (6) and the reciprocating movement of the spiral conveyor (6) along the track (9), and when the pulleys (10) touch the travel switches (13), the controller (14) automatically stops the moving motor (3) from running. The track base (8) is a rectangular frame structure, the track (9) is symmetrically arranged along the length direction of the track base (8), and the four groups of pulleys (10) are divided into two groups, and each group of pulleys is arranged in parallel along the width direction of the track (9).

2. The mobile screw conveyor of claim 1, wherein: The engagement position of the sprocket (11) and the chain (12) is located on the same side of the track base (8), and when the moving motor (3) drives the sprocket (11) to rotate, the spiral conveyor (6) is moved through the fixed connection between the chain (12) and the track base (8).

3. The mobile screw conveyor of claim 1, wherein: The travel switches (13) are linked with the pulleys (10) through mechanical triggering or photoelectric sensing, and the movement range of the spiral conveyor (6) is limited.

4. The mobile screw conveyor of claim 1, wherein: The controller (14) integrates manual and automatic control modes, and can independently adjust the rotating speed of the spiral motor (1) and the start-stop timing sequence of the moving motor (3).

5. The mobile screw conveyor of claim 1, wherein: ​

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