Anti-overload self-adaptive walking bin sweeping machine
By designing adaptive swing wheels and an overload-proof coupling, the obstacle of the sweeper when walking on uneven ground or when the grain pile has too much resistance is solved, achieving stable walking and safety protection, and avoiding the risk of motor overload and dust explosion.
Patent Information
- Application Number
- CN202423184258.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-24
AI Technical Summary
Existing warehouse sweeping machines are prone to problems such as walking obstacles, motor overload, and slippage when faced with uneven warehouse floors and excessive resistance from grain piles, and manual troubleshooting poses safety hazards.
The design incorporates an adaptive swing wheel structure and an overload protection coupling. The wheels are connected to the longitudinal beam via movable hinges, and a counterweight adjusts the friction. The coupling protects the motor from overload through magnetic or friction-based transmission.
It enables stable movement on uneven ground, avoids motor overload and slippage, reduces human intervention, lowers the risk of dust explosion, and ensures safe production.
Smart Images
Figure CN223667871U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of grain storage machinery, specifically an overload-resistant adaptive walking sweeping machine. Background Technology
[0002] A silo sweeper, also known as a silo cleaning machine, is a common cleaning device for flat-bottomed steel silos. Most existing silo sweepers use fixed wheels. The principle is that rollers are installed at the rear of the machine to fit the circular track on the flat bottom of the silo. The machine rotates around a vertical axis, sweeping across the grain surface. The grain is conveyed radially to the discharge port by the machine's auger (i.e., a horizontal screw conveyor), and the accumulated grain falls freely until discharge is complete.
[0003] The main problems encountered in existing technologies are:
[0004] Although the height of its wheels can be adjusted by screws, it cannot completely overcome the uneven ground level caused by defects in the concrete pouring of the warehouse floor or ground settlement, which leads to walking obstacles.
[0005] In addition, during the movement of the cleaning machine, situations may arise where the resistance from the grain pile in front of the machine is too great, or where too much grain is intruded into the grain pile. This can lead to excessive current in the walking motor, overload tripping, or even burnout of the walking motor and explosion-proof conductive slip rings. Insufficient friction between the walking wheels and the ground can also cause tire slippage and insufficient forward driving force. In these situations, manual entry into the confined space inside the silo is necessary to troubleshoot the problem. This not only delays the unloading operation but also poses risks of dust, collapse, and even dust explosions, as the steel silo often contains a large amount of accumulated material, sometimes even showing signs of arching, and is also dusty. Summary of the Invention
[0006] To address the aforementioned problems in the existing technology, this utility model proposes an overload-resistant adaptive walking sweeping machine, the main body of which includes a longitudinal beam, an auger, and a vertical central rotating shaft; the auger is installed below the longitudinal beam, and the axis of the auger is aligned with the length direction of the longitudinal beam; the first end of the longitudinal beam is connected to the central rotating shaft, and the longitudinal beam is connected to the walking mechanism; the walking mechanism includes a walking motor and a walking wheel structure, and the walking motor is connected to and drives the walking wheel structure to walk through a transmission system.
[0007] The walking wheel structure is an adaptive swing structure, which includes a shell, a swing frame, and a walking wheel; the shell is connected to the longitudinal beam via a first movable hinge; the swing frame is connected to the inside of the shell via a second movable hinge; the walking wheel is connected to the swing frame; the first movable hinge, the second movable hinge, and the axis of rotation of the walking wheel are parallel to each other.
[0008] Further, the walking motor is connected to the longitudinal beam through a frame; a speed reducer is also connected to the frame; two ends of a transmission shaft are connected to the output shaft of the speed reducer and the rotating shaft of the walking wheel through universal couplings respectively; an overload prevention coupling or a safety coupling is connected between the input shaft of the speed reducer and the output shaft of the walking motor.
[0009] Specifically, the overload prevention coupling is a magnetic coupling, and the safety coupling is a friction type safety coupling.
[0010] Further, the walking wheel comprises two groups; the swing frame is a triangular swing frame, two groups of walking wheels are connected to two base angles of the triangular swing frame, and the top angle of the triangular swing frame is connected to the second movable hinge.
[0011] Further, the first end of the shell is connected to the longitudinal beam through the first movable hinge, and the last end of the shell is connected to the counterweight.
[0012] The walking wheel structure is designed into a self-adaptive swing structure in the utility model, and the walking wheel can be closely attached to the ground under various working conditions, and can still adaptively walk even if the ground is uneven, without manual adjustment. The overload prevention coupling or the safety coupling can simultaneously meet the output torque of the walking motor and ensure that the coupling automatically slips and idles to protect the motor from overloading when walking. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 is a structural schematic view (a top view) of the utility model;
[0014] Figure 2 is a structural schematic view (a view from A of Figure 1 ) of the self-adaptive swing structure;
[0015] Figure 3 is a structural schematic view (a view from B-B of Figure 1 ) of the walking motor part;
[0016] In the drawing: longitudinal beam 1, auger 2, center rotating shaft 3, walking motor 4, self-adaptive swing structure 5, shell 6, swing frame 7, walking wheel 8, first movable hinge 9, second movable hinge 10, walking wheel 11, counterweight 12, frame 13, speed reducer 14, transmission shaft 15, universal coupling 16, magnetic coupling 17. DETAILED DESCRIPTION
[0017] The utility model will be further illustrated below in combination with the drawing and the specific implementation.
[0018] Reference Figures 1 to 3The application discloses an anti-overload self-adaptive walking warehouse sweeping machine, which comprises a longitudinal beam 1, an auger 2 and a vertical central rotating shaft 3; the auger 2 is arranged below the longitudinal beam 1 and the axis direction of the auger is consistent with the length direction of the longitudinal beam; the first end of the longitudinal beam 1 is connected with the central rotating shaft 3, and the longitudinal beam 1 is connected with a walking mechanism; the walking mechanism comprises a walking motor 4 and a walking wheel structure, and the walking motor is connected with the walking wheel structure through a transmission system and drives the walking wheel structure to walk.
[0019] The walking wheel structure is a self-adaptive swing structure 5, which comprises an outer shell 6, a swing frame 7 and walking wheels 8; the outer shell 6 is connected with the longitudinal beam 1 through a first movable hinge 9; the swing frame 7 is connected with the outer shell 6 through a second movable hinge 10; the walking wheels 8 are connected with the swing frame 7 through a bearing device; the first movable hinge, the second movable hinge and the rotating shaft of the walking wheels are parallel to each other.
[0020] Further referring to Figure 2 The walking wheels 8 are divided into two groups; the swing frame 7 is a triangular swing frame, two groups of the walking wheels are connected with two bottom corners of the triangular swing frame, and the top corner of the triangular swing frame is connected with the second movable hinge 10; the first end of the outer shell 6 is connected with the longitudinal beam near the end through the first movable hinge 9, and the end of the outer shell 9 is connected with a counterweight 12.
[0021] Further referring to Figure 3 The walking motor 4 is connected with the longitudinal beam 1 through a frame 13; a speed reducer 14 is further connected on the frame 13; two ends of a transmission shaft 15 are connected with the output shaft of the speed reducer and the rotating shaft of the walking wheels respectively through universal couplings 16 (in the example, any one group of the walking wheels is connected with the transmission shaft as a driving wheel, and the other group of the walking wheels is a driven wheel); the input shaft of the speed reducer 14 is connected with the output shaft of the walking motor 4. The input shaft of the speed reducer and the output shaft of the walking motor are connected through an anti-overload coupling or a safety coupling. The anti-overload coupling can adopt a magnetic coupling 17. The safety coupling can adopt a friction type safety coupling.
[0022] The walking motor, the anti-overload coupling / safety coupling and the speed reducer are vertically assembled on the frame, thereby saving space. The input shaft and the output shaft of the speed reducer are in an "L" shape.
[0023] Referring to Figure 2 The walking wheel structure is designed as a self-adaptive swing structure, so that the walking wheels can be kept close to the ground at any time, and the walking can still be self-adapted even if the ground is uneven.
[0024] The adaptive swing structure is composed of a shell, a triangular swing frame, a traveling tire, a transmission system, a counterweight and the like. The first end of the shell is connected with the main body (longitudinal beam) of the cleaning machine, and the connection is a movable hinge; the triangular swing frame and the traveling tire are installed in the shell; the tail of the shell is hung with the counterweight (the counterweight is connected in a detachable manner, and the counterweight can be replaced by a counterweight with different weight). Under the combined self-weight of the counterweight, the shell and the wheel set, the traveling mechanism compresses the tire on the ground with the movable hinge as the center, so that the tire has sufficient friction with the ground, and the friction can be adjusted by increasing or decreasing the counterweight. The top of the triangular swing frame is connected with the shell in a movable hinge connection, two traveling tires are installed at the bottom of the triangular swing frame, and the triangular swing frame can swing at a certain angle with the movable hinge as the center, so as to drive the two groups of tires to have a certain obstacle crossing ability and always adhere to the ground. The universal coupling is connected between the traveling motor and the mechanism to adapt to the axial displacement of the transmission shaft when the traveling mechanism crosses the obstacle.
[0025] Reference Figure 3 The principle of the magnetic coupling (i.e. magnetic force coupling) is that the coupling is installed between the output shaft of the traveling motor and the input shaft of the speed reducer, the motor power is input into the speed reducer through the coupling, one end of the coupling is installed on the motor shaft, the other end of the coupling is installed on the input shaft of the speed reducer, the torque is transmitted through the magnetic force of N\S pole magnetic field attraction, there is a gap of about 2mm between the two magnetic poles, when the torque exceeds the magnetic field attraction force, the coupling idles and no longer transmits greater torque, so as to protect the motor from overloading and stop the forward movement of the cleaning machine. When the reaction torque generated by the forward resistance of the cleaning machine is less than the rated torque of the magnetic coupling, the cleaning machine is driven to move forward again, and the process is repeated.
[0026] The principle of the friction type safety coupling is that the friction and the flexibility of the elastic element are relied on. The coupling uses two cylindrical spiral springs to press the arc-shaped friction plate through the intermediate ring, so that the friction force is generated between the friction plates. When the transmitted torque exceeds the sliding torque of the coupling, the coupling main and driven sides will slip, thereby playing a safety protection role; when the transmitted torque is lower than the sliding torque, the two sides of the coupling do not slide relative to each other, and the normal work is restored.
[0027] The cleaning machine avoids the overload failure and accident caused by the overload of the traveling motor, the slipping of the traveling wheel and the excessive invasion of the grain pile; the magnetic transmission also has no mechanical contact, no mechanical wear and no spark generated by contact transmission, which perfectly matches the use in the dust environment in the warehouse and maximally avoids the risk of dust explosion.
[0028] In summary, the cleaning machine can reduce mechanical failure, reduce personnel entering the warehouse and reduce safety hazards, and ensure safe production.
Claims
1. An overload-preventing self-adapting walking unscrambler, the main body of which comprises a longitudinal beam, an auger and a vertical central rotating shaft; the auger is installed below the longitudinal beam, and the axis direction of the auger is consistent with the length direction of the longitudinal beam; the head end of the longitudinal beam is connected with the central rotating shaft, and the longitudinal beam is connected with a walking mechanism; the walking mechanism comprises a walking motor and a walking wheel structure, and the walking motor is connected with and drives the walking wheel structure to walk through a transmission system, characterized in that The walking wheel structure is an adaptive swing structure, which comprises a shell, a swing frame and a walking wheel. The shell is connected to the longitudinal beam through a first movable hinge, the swing frame is connected to the shell through a second movable hinge, and the walking wheel is connected to the swing frame; the first movable hinge, the second movable hinge and the rotating shaft of the walking wheel are parallel to each other.
2. The self-leveling, anti-overloading walking unscrambler of claim 1, wherein The walking motor is connected to the longitudinal beam through a frame, a speed reducer is further connected to the frame, the two ends of a transmission shaft are connected to the output shaft of the speed reducer and the rotating shaft of the walking wheel through universal couplings respectively, and the input shaft of the speed reducer is connected to the output shaft of the walking motor.
3. The self-leveling, anti-overloading walking unscrambler of claim 2, wherein The input shaft of the speed reducer and the output shaft of the walking motor are connected through an overload prevention coupling or a safety coupling.
4. The self-leveling, anti-overloading walking unscrambler of claim 3, wherein The overload prevention coupling is a magnetic coupling.
5. The self-leveling, anti-overloading walking unscrambler of claim 3, wherein The safety coupling is a friction type safety coupling.
6. The self-leveling, anti-overshot walking unscrambler of claim 1, wherein The walking wheel comprises two groups, the swing frame is a triangular swing frame, the two groups of walking wheels are connected to two base angles of the triangular swing frame, and the top angle of the triangular swing frame is connected to the second movable hinge.
7. The self-leveling, anti-overshot walking unscrambler of claim 1 or 6, wherein The first end of the shell is connected to the longitudinal beam through a first movable hinge, and the last end of the shell is connected to a counterweight.