Grain belt conveyor with automatic start-stop function

Abstract

The utility model discloses a grain belt conveyor with an automatic starting and stopping function. The grain belt conveyor comprises a rack, two rotating rollers rotationally installed at the two ends of the rack, a plurality of supporting rollers rotationally installed on the inner side of the rack, a motor fixed to the bottom end of the inner side of the rack and a conveying belt wound among the rotating rollers, the supporting rollers and the motor. The supporting sensing assemblies are arranged on the inner side of the rack and located at the bottom of the conveying belt; the grain belt conveyor in the prior art is improved and optimized, the stress roller frame matched with the conveying belt in width is designed in the grain belt conveyor, and the pressure sensor is designed at the lower end of the stress roller frame, so that when no conveyed objects exist on the conveying belt, the stress frame cannot press the pressure sensor below, and the conveying belt cannot be damaged. And when the controller does not receive the signal of any pressure sensor at the same time, the belt conveyor stops working, no load of the conveyor is accurately avoided, otherwise, the belt conveyor operates normally, and automatic starting and stopping of the belt conveyor are achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of belt conveyors, specifically relating to a grain belt conveyor with automatic start and stop function. Background Technology

[0002] Grain belt conveyors, as a type of general-purpose belt conveyor, are grain conveying equipment improved from fixed belt conveyors. They are mainly used in grain production, processing, and transportation processes, and have a wide range of applications, including but not limited to the loading and transportation of bulk and packaged grain crops such as wheat, corn, and soybeans. Grain belt conveyors are mainly composed of a main body frame, conveyor belt, idlers, rollers, traveling device, drive device, and lifting device. They are characterized by simple structure, convenient movement, good passability, convenient lifting and moving, and simple operation.

[0003] In the existing technology, grain belt conveyors are mostly used in flat warehouses for grain loading and unloading operations, which involve the use of bulk grain transport vehicles and multiple inclined belt conveyors. After the bulk grain transport vehicle finishes unloading, there will be a time gap between the unloading of the next transport vehicle and the unloading of the next vehicle. The time gap varies in length. During this time, the grain belt conveyor is still running under no-load, which is not conducive to saving electricity. Therefore, this utility model proposes a grain belt conveyor with automatic start and stop function. Utility Model Content

[0004] The purpose of this invention is to provide a grain belt conveyor with automatic start-stop function to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a grain belt conveyor with automatic start-stop function, comprising...

[0006] The machine frame, two rotating rollers rotatably mounted at both ends of the machine frame, multiple support rollers rotatably mounted inside the machine frame, a motor fixed at the bottom inside the machine frame, and a conveyor belt wound between the rotating rollers, support rollers and motor;

[0007] And multiple support sensing components set inside the frame and located at the bottom of the conveyor belt, including a bottom support plate fixed laterally inside the frame, a pressure sensor installed at the top center of the bottom support plate, two guide plates symmetrically fixed to the top of the bottom support plate, a pressure plate slidably installed between the two guide plates and located at the top of the pressure sensor, a roller frame fixed to the top of the pressure plate, and a top roller rotatably installed at the top of the roller frame and in rolling contact with the conveyor belt.

[0008] And a controller fixed at the bottom of the frame, with all pressure sensors connected to the controller via signal lines.

[0009] Preferably, side sliders are fixed on both sides of the pressure plate, and a side sliding groove corresponding to the side slider is formed on the inner side surface of the guide plate, and the side slider slides within the side sliding groove.

[0010] Preferably, the roller frame is U-shaped in side view, and a shaft is fixed on the inner side of the top end of the roller frame, and the top roller is rotatably sleeved on the shaft.

[0011] Preferably, the support sensing component further includes a disassembly structure, which is disposed between the pressure sensor and the base plate.

[0012] Preferably, the disassembly structure includes an annular mounting base fixed to the top surface of the base plate, and the bottom end of the pressure sensor is inserted into the inner side of the annular mounting base.

[0013] Preferably, the inner wall of the annular mounting base is provided with a plurality of integral rubber protrusions, and the bottom surface of the pressure sensor is provided with an annular groove corresponding to the rubber protrusions, and the rubber protrusions are squeezed into the annular groove.

[0014] Preferably, a feed inlet is installed at the top of one end of the frame.

[0015] Preferably, the bottom of the frame is equipped with multiple support wheel frames.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model improves and optimizes the existing grain belt conveyor by designing a force-bearing roller frame that is adapted to the width of the conveyor belt, and designing a pressure sensor at the lower end of the force-bearing roller frame. When there are no items being conveyed on the conveyor belt, the force-bearing frame will not press down on the pressure sensor below. At the same time, if the controller does not receive a signal from any pressure sensor, the belt conveyor will stop working, accurately avoiding the conveyor being unloaded. Conversely, the belt conveyor will operate normally, realizing the automatic start and stop of the belt conveyor. Attached Figure Description

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This utility model Figure 1 A partial enlarged view of area A in the middle;

[0019] Figure 3 This is a perspective view of the supporting sensing component of this utility model;

[0020] Figure 4 This utility model Figure 2 A magnified view of a portion of region B in the middle;

[0021] In the diagram: 1. Frame; 2. Conveyor belt; 3. Rotating roller; 4. Support roller; 5. Motor; 6. Support sensor assembly; 61. Bottom support plate; 62. Guide plate; 621. Side slide groove; 63. Roller frame; 64. Pressure plate; 641. Side slider; 65. Top roller; 66. Pressure sensor; 661. Annular groove; 67. Annular mounting base; 671. Rubber protrusion; 7. Controller; 8. Feed inlet. 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] Example 1

[0024] Please see Figures 1 to 3 This is the first embodiment of the present invention, which provides a technical solution: a grain belt conveyor with automatic start-stop function, comprising...

[0025] The frame 1, two rotating rollers 3 rotatably mounted at both ends of the frame 1 via a rotating shaft, multiple support rollers 4 rotatably mounted on the inner side of the frame 1 via a rotating shaft, a motor 5 fixed to the bottom inner side of the frame 1 by bolts, and a conveyor belt 2 wound between the rotating rollers 3, the support rollers 4 and the motor 5. When the motor 5 runs, it will drive the conveyor belt 2 to start running. During the operation, the support rollers 4 play an auxiliary support role for the conveyor belt 2. The above structural principles are all technologies that have been disclosed in the prior art.

[0026] And multiple supporting sensing components 6 are set inside the frame 1 and located at the bottom of the conveyor belt 2, including a bottom support plate 61 horizontally fixed inside the frame 1, a pressure sensor 66 installed at the top center of the bottom support plate 61, two guide plates 62 symmetrically welded and fixed to the top of the bottom support plate 61, a pressure plate 64 slidably installed between the two guide plates 62 and located on top of the pressure sensor 66, a roller frame 63 fixed on the top of the pressure plate 64, and a top roller 65 rotatably installed on the top of the roller frame 63 and in rolling contact with the conveyor belt 2. The pressure sensor 66 is model D504 / 7DZ, and its working principle is: when the pressure of the measured medium is greater than or less than the preset set point, the sensor generates a step signal, which triggers the micro switch inside the sensor, thereby realizing the start and stop control of the belt conveyor.

[0027] When the pressure detected by the pressure sensor 66 reaches the preset start pressure, the controller 7 receives the signal and sends a start command to the motor 5 of the belt conveyor, and the belt conveyor starts to run.

[0028] When the pressure detected by the pressure sensor 66 is lower than the preset stop pressure, the controller 7 receives the signal and sends a stop command to the motor 5 of the belt conveyor, and the belt conveyor stops running;

[0029] Throughout the process, controller 7 can also adjust and optimize the control effect in real time based on other operating parameters and preset control strategies;

[0030] The controller 7, which is fixed at the bottom of the frame 1, can be an S7-1200 model. All pressure sensors 66 are connected to the controller 7 via signal lines. The controller 7 is connected to the original control box of the belt conveyor. When subsequent grain is conveyed on the conveyor belt 2, it will press down on the conveyor belt 2, which in turn will press down on the top roller 65. This causes the roller frame 63 and the pressure plate 64 to press down on the pressure sensor 66. The pressure sensor 66 will send the pressure signal to the controller 7 in real time via the signal line. The controller 7 then controls the belt conveyor to operate normally. Conversely, when there is no grain being conveyed on the conveyor belt 2, the conveyor belt 2 will not press down on the top roller 65, which means that the pressure plate 64 will not press down on the pressure sensor 66. When the pressure value detected by the pressure sensor 66 is lower than the preset stop pressure, the controller 7 will stop the belt conveyor, achieving the effect of automatic shutdown under no-load conditions, saving electricity and reducing environmental noise.

[0031] In this embodiment, preferably, side sliders 641 are welded and fixed on both sides of the pressure plate 64, and a side sliding groove 621 corresponding to the side slider 641 is opened on the inner side surface of the guide plate 62. The side slider 641 slides in the side sliding groove 621, so that the pressure plate 64 can slide stably between the two guide plates 62.

[0032] In this embodiment, preferably, the roller frame 63 is U-shaped in side view, and a shaft is fixed on the inner side of the top end of the roller frame 63. The top roller 65 is rotatably sleeved on the shaft, so that the top roller 65 can be smoothly rotated and installed on the inner side of the top end of the roller frame 63.

[0033] In this embodiment, preferably, a feed inlet 8 is installed at the top of one end of the frame 1 for feeding grain.

[0034] In this embodiment, preferably, the bottom of the frame 1 is equipped with multiple support wheels to support the frame 1 and facilitate the movement of the frame 1.

[0035] Example 2

[0036] Please see Figures 1 to 4This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that the disassembly and assembly structure can be set to facilitate the subsequent disassembly, assembly and maintenance of the pressure sensor 66.

[0037] Specifically, the supporting sensing assembly 6 also includes a disassembly and assembly structure, which is located between the pressure sensor 66 and the base plate 61. The disassembly and assembly structure includes an annular mounting base 67 glued to the top surface of the base plate 61, with the bottom end of the pressure sensor 66 inserted into the inner side of the annular mounting base 67. The inner wall of the annular mounting base 67 has multiple integrated rubber protrusions 671, both made of rubber, which undergo elastic deformation when compressed. The bottom surface of the pressure sensor 66 has an annular groove 661 corresponding to the rubber protrusions 671. The protrusion 671 is squeezed into the annular slot 661, which can limit the pressure sensor 66 and ensure the installation stability of the pressure sensor 66. When the pressure sensor 66 needs to be removed for inspection and maintenance, simply slide the pressure plate 64 upward first, and then pull the pressure sensor 66 upward forcefully so that the bottom end of the pressure sensor 66 is pulled out from the inside of the annular mounting base 67, and the pressure sensor 66 can be quickly removed. In daily use, due to the obstruction of the pressure plate 64, the pressure sensor 66 can be stably installed on the top of the base support plate 61.

[0038] Although the embodiments of the present invention have been shown and described (see the detailed description above for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grain belt conveyor with automatic start / stop function, characterized in that: include The frame (1), two rotating rollers (3) rotatably installed at both ends of the frame (1), multiple support rollers (4) rotatably installed inside the frame (1), a motor (5) fixed at the bottom inside the frame (1), and a conveyor belt (2) wound between the rotating rollers (3), support rollers (4) and motor (5). And a plurality of support sensing components (6) set inside the frame (1) and located at the bottom of the conveyor belt (2), including a bottom support plate (61) fixed laterally inside the frame (1), a pressure sensor (66) installed at the top center of the bottom support plate (61), two guide plates (62) symmetrically fixed to the top of the bottom support plate (61), a pressure plate (64) slidably installed between the two guide plates (62) and located on top of the pressure sensor (66), a roller frame (63) fixed to the top of the pressure plate (64), and a top roller (65) rotatably installed on the top of the roller frame (63) and in rolling contact with the conveyor belt (2); And a controller (7) fixed at the bottom of the frame (1), and all pressure sensors (66) are connected to the controller (7) via signal lines.

2. A grain belt conveyor with automatic start / stop function according to claim 1, characterized in that: Side sliders (641) are fixed on both sides of the pressure plate (64), and a side groove (621) corresponding to the side slider (641) is opened on the inner side surface of the guide plate (62). The side slider (641) slides in the side groove (621).

3. A grain belt conveyor with automatic start / stop function according to claim 1, characterized in that: The roller frame (63) is U-shaped in side view, and a shaft is fixed on the inner side of the top of the roller frame (63). The top roller (65) is rotatably sleeved on the shaft.

4. A grain belt conveyor with automatic start / stop function according to claim 1, characterized in that: The supporting sensing component (6) also includes a disassembly structure, which is disposed between the pressure sensor (66) and the bottom support plate (61).

5. A grain belt conveyor with automatic start / stop function according to claim 4, characterized in that: The disassembly structure includes an annular mounting base (67) fixed to the top surface of the bottom support plate (61), and the bottom end of the pressure sensor (66) is inserted into the inside of the annular mounting base (67).

6. A grain belt conveyor with automatic start / stop function according to claim 5, characterized in that: The inner wall of the annular mounting base (67) is provided with a plurality of integral rubber protrusions (671), and the bottom surface of the pressure sensor (66) is provided with an annular groove (661) corresponding to the rubber protrusions (671), and the rubber protrusions (671) are squeezed into the annular groove (661).

7. A grain belt conveyor with automatic start / stop function according to claim 1, characterized in that: The top of one end of the frame (1) is equipped with a feed inlet (8).

8. A grain belt conveyor with automatic start / stop function according to claim 1, characterized in that: The bottom of the frame (1) is equipped with multiple support wheel frames.

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