Runoff detection device and conveyor

Abstract

This invention provides a belt misalignment detection device and a conveyor. The belt misalignment detection device includes: a support frame connected to the conveyor frame and arranged in pairs on both sides of the conveyor belt in the conveying direction; an elastic element connected to the support frame at one end; a swinging element connected to the other end of the elastic element and swingably connected to the support frame; a roller rotatably mounted on the swinging element, the outer surface of the roller being used to contact the side of the conveyor belt; and a first detection switch mounted on the support frame and located at a first preset position on the swinging path of the swinging element. The first detection switch is configured to trigger the conveyor to correct the belt misalignment when the swinging element is pushed to the first preset position by the side of the conveyor belt. By maintaining rolling contact between the roller and the side of the conveyor belt, the belt misalignment detection device converts the lateral displacement of the conveyor belt into the swinging motion of the swinging element, thereby accurately and stably obtaining the degree of misalignment and triggering the first detection switch for correction adjustment, effectively improving the accuracy and reliability of belt misalignment detection.

Description

Technical Field

[0001] This utility model relates to the field of conveying equipment technology, specifically to a misalignment detection device and a conveyor. Background Technology

[0002] In modern industry, conveyors are widely used for material transport. In industries with high hygiene standards, such as food processing, steel belts are typically used as conveyor belts to facilitate cleaning and prevent material contamination. However, after prolonged operation, conveyors are prone to belt misalignment due to uneven stress on the belt, causing it to deviate from its normal operating track. Currently, the industry typically uses detection switches to monitor the side position of the conveyor belt, detecting misalignment and triggering automatic correction adjustments to rectify the belt deviation.

[0003] However, existing technical solutions have the following drawbacks: especially in conveyors using steel belts, the edges may bend or wavy after prolonged use. This causes the distance between the detection switch and the side of the conveyor belt to fluctuate, resulting in unstable detection signals. This, in turn, leads to malfunctions in the automatic correction adjustment, causing the conveyor belt to collide with the conveyor frame and damage the belt. Damage to the conveyor belt necessitates the shutdown of the entire production line, and the difficulty in repairing steel belts results in significant economic losses.

[0004] In addition, in specific environments such as food production, the workshop is usually humid and the equipment needs to be cleaned regularly. When photoelectric detection switches are used, the cleaning water or cleaning materials can easily splash onto the surface of the photoelectric detection switches, causing them to malfunction. This can also lead to false alarms in the automatic correction adjustment. Utility Model Content

[0005] To address the above problems, this utility model provides a belt misalignment detection device and a conveyor, which can accurately and reliably detect belt misalignment and avoid erroneous adjustments during correction.

[0006] This utility model provides a belt misalignment detection device for detecting belt misalignment in a conveyor, comprising: The support frame is connected to the conveyor frame and is installed in pairs on both sides of the conveyor belt in the conveying direction; The elastic element is connected to the bracket at one end. The swinging component, connected to the other end of the elastic component, is swingably connected to the bracket; A roller is rotatably mounted on a swinging member, and the outer surface of the roller is used to contact the side of the conveyor belt; The first detection switch is mounted on the bracket and located at a first preset position on the swing path of the swinging component. The first detection switch is configured to trigger the conveyor to perform conveyor belt correction when the swinging component is pushed to the first preset position by the side of the conveyor belt.

[0007] According to the above technical solution, by setting up a swinging component and maintaining rolling contact between the roller and the side of the conveyor belt, even if the side of the conveyor belt is bent and deformed, the roller can still maintain rolling contact with the side of the conveyor belt, converting the lateral displacement of the conveyor belt into the swinging motion of the swinging component. Thus, the degree of belt deviation can be accurately and stably obtained by the swinging amplitude of the swinging component. Then, by detecting the position of the swinging component through the first detection switch, the deviation correction adjustment can be accurately triggered, effectively improving the accuracy and reliability of deviation detection.

[0008] Optionally, the elastic element is a leaf spring, and the leaf spring is inclined.

[0009] According to the above technical solution, the tilted leaf spring and gravity work together to continuously push the oscillating component towards the conveyor belt, ensuring that the roller remains in contact with the side of the conveyor belt and guaranteeing the accuracy and reliability of belt misalignment detection. Simultaneously, the leaf spring provides stable elastic deformation; as the oscillating component swings outward following the conveyor belt's deviation, the leaf spring deforms, and during the conveyor belt correction process, the elastic reset of the leaf spring ensures that the roller remains in contact with the side of the conveyor belt.

[0010] Optionally, the leaf spring has an inclination angle of 3-30°.

[0011] According to the above technical solution, the roller can be made to make stable contact with the side of the conveyor belt.

[0012] Optionally, the oscillating component is also provided with an axle, and the roller is rotatably mounted on the oscillating component via the axle.

[0013] Optionally, it also includes: a second detection switch, which is disposed on the bracket and located at a second preset position on the swing path of the swing member. The second detection switch is configured to trigger the conveyor to stop when the swing member is pushed to the second preset position by the side of the conveyor belt. The second detection switch is farther away from the normal operating position of the conveyor belt than the first detection switch.

[0014] According to the above technical solution, by setting a second detection switch at a more distant position, the conveyor can be stopped in case of abnormal working conditions such as failure of correction adjustment or extreme deviation, which can effectively prevent the conveyor belt from colliding with the frame and causing damage, and further ensure production safety.

[0015] Optionally, it also includes: a guide block, mounted on the bracket and positioned below the side of the conveyor belt, for guiding the side of the conveyor belt into contact with the roller.

[0016] According to the above technical solution, the guide block can limit the side of the conveyor belt in the vertical direction, preventing the side of the conveyor belt from leaving the effective contact area with the roller due to shaking, sagging or deformation after carrying materials, thus ensuring the continuous effectiveness of the belt deviation detection and further enhancing the reliability of the belt deviation detection.

[0017] This utility model also provides a conveyor, comprising: The belt deviation correction device is used to correct and adjust the belt deviation when it runs off track. The deviation detection device is the deviation detection device described above, and the first detection switch in the deviation detection device is communicatively connected to the deviation correction adjustment device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the deviation detection device in the embodiment of this utility model. Figure 2 This is a schematic diagram of the misalignment detection device installed on one side of the conveyor belt in an embodiment of this utility model. Figure 3 This is a top view of a belt misalignment detection device installed on one side of the conveyor belt in an embodiment of this utility model. Figure 4 This is a side view of a belt misalignment detection device installed on one side of the conveyor belt in an embodiment of this utility model. Figure 5 This is a schematic diagram of the leaf spring in an embodiment of this utility model; Figure 6 This is a cross-sectional structural diagram of the roller in an embodiment of this utility model; Figure 7 This is a side view of the bracket in an embodiment of the present invention. Figure 8 This is a schematic diagram of the other side of the bracket in an embodiment of this utility model.

[0019] Reference numerals: Deviation detection device 100, bracket 10, bracket mounting hole 101, bracket connecting part 11, elastic element 20, swinging element 30, swinging element connecting part 31, roller 32, wheel axle 33, first detection switch 40, first long strip mounting hole 41, second detection switch 50, second long strip mounting hole 51, guide block 60, frame 201, mounting base 202, conveyor belt 203. Detailed Implementation

[0020] 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.

[0021] refer to Figure 1 The present embodiment provides a belt misalignment detection device 100 for detecting belt misalignment of a conveyor belt 203. It includes a bracket 10, an elastic element 20, a swing element 30, a roller 32, a first detection switch 40, a second detection switch 50, and a guide block 60.

[0022] The bracket 10 is connected to the frame 201 of the conveyor and is arranged in pairs on both sides of the conveyor belt 203 in the conveying direction.

[0023] Specifically, the bracket 10 is the mounting base of the entire misalignment detection device 100. It is fixedly installed on the frame 201 of the conveyor and set on both sides of the conveyor belt 203 in the conveying direction so that misalignment on both sides of the conveyor belt 203 can be detected.

[0024] refer to Figure 2 and Figure 3 In this embodiment, the conveyor frame 201 is provided with a mounting base 202, and the bottom of the bracket 10 is provided with two elongated bracket mounting holes 101. The bracket 10 can be fixed to the mounting base 202 by bolts passing through the bracket mounting holes 101, thus fixing it to the conveyor frame 201. This also facilitates adjustment and maintenance. The elongated bracket mounting holes 101 allow the bracket 10 to be adjusted in the direction away from or towards the conveyor belt 203. Understandably, in situations where higher stability is required, the bracket 10 can also be further securely fixed to the conveyor frame 201 by welding or other connection methods.

[0025] refer to Figure 2 One end of the elastic element 20 is connected to the bracket 10, and the swing element 30 is connected to the other end of the elastic element 20, and can be swingably connected to the bracket 10.

[0026] The roller 32 is rotatably mounted on the swing member 30. The outer surface of the roller 32 is used to contact the side of the conveyor belt 203. When the conveyor belt 203 deviates from its course, it can push the swing member 30 where the roller 32 is located to swing outward, and the elastic member 20 deforms. During the conveyor belt correction and reset process, the elastic member 20 restores its deformation, so that the swing member 30 is reset, thereby enabling the roller 32 to maintain contact with the side of the conveyor belt 203.

[0027] Further, refer to Figure 5 The elastic element 20 is a leaf spring, and the leaf spring is set at an angle.

[0028] In this embodiment, the elastic element 20 is a rectangular leaf spring, and the top side of the bracket 10 has a rectangular bracket connecting part 11. One end of the elastic element 20 is fixedly connected to the bracket connecting part 11 by bolts. At the same time, the top of the swinging element 30 is also provided with a rectangular swinging element connecting part 31, and the other end of the elastic element 20 is fixedly connected to the swinging element connecting part 31 by bolts, so that the swinging element 30 is oscillatingly connected to the bracket 10. The swinging element 30 can swing with the connection point between the elastic element 20 and the bracket 10 as the fulcrum.

[0029] refer to Figure 2 In this embodiment, the bracket connecting part 11 is inclined, and the mounting plane of the bracket connecting part 11 has an angle with the vertical plane. At the same time, the swing member connecting part 31 is set to a matching inclined setting. After the leaf spring is installed, the leaf spring is inclined so that the upper end is closer to the conveyor belt 203 than the lower end. Under the combined action of the inclined leaf spring and gravity, the swing member 30 can be continuously pushed towards the conveyor belt 203, so that the roller 32 keeps in contact with the side of the conveyor belt 203, ensuring the accuracy and reliability of the deviation detection.

[0030] When the conveyor belt 203 deviates outward, it will push the roller 32 and the swinging member 30 where the roller 32 is located to swing outward, and at the same time, the leaf spring will deform. When the conveyor belt 203 is corrected and returns to the normal operating position, the leaf spring will restore its deformation, and combined with the effect of gravity, the swinging member 30 and the roller 32 can automatically reset, so that the roller 32 can maintain contact with the side of the conveyor belt 203.

[0031] Furthermore, the tilt angle of the leaf spring is 3-30°. In this embodiment, the tilt angle of the leaf spring is set to 8°.

[0032] Specifically, the tilt angle of the leaf spring can be determined by the tilt degree of the bracket connection 11. The smaller the tilt angle, the closer the leaf spring is to a vertical setting, and the weaker the inward horizontal thrust exerted by the leaf spring on the oscillating member 30. When the tilt angle is too small, the inward horizontal thrust exerted by the leaf spring on the oscillating member 30 is too weak, which may result in insufficient contact between the roller 32 and the conveyor belt 203, thus affecting the reliability of the deviation detection. When the tilt angle is too large, the inward horizontal thrust exerted by the leaf spring on the oscillating member 30 is too strong, which may result in excessive contact between the roller 32 and the conveyor belt 203, leading to increased friction and wear on the sides of the roller 32 and the conveyor belt 203. Therefore, within the tilt angle range of 3-30°, it is possible to ensure continuous and stable contact between the roller 32 and the sides of the conveyor belt 203 while reducing wear on the conveyor belt 203.

[0033] refer to Figure 6 Furthermore, the swing member 30 is also provided with a wheel axle 33, and the roller 32 is rotatably mounted on the swing member 30 via the wheel axle 33.

[0034] Specifically, the oscillating member 30 is fixedly mounted on the axle 33 in the vertical direction, and the roller 32 is vertically mounted around the axle 33 and can rotate around the axle 33, so that the roller 32 can maintain rolling contact with the side of the conveyor belt 203 when the conveyor belt 203 is running. In addition, to ensure smooth rotation of the roller 32, a bearing, such as a rolling bearing, can be installed between the roller 32 and the axle 33.

[0035] The first detection switch 40 is mounted on the bracket 10 and located at a first preset position on the swing path of the swing member 30. The first detection switch 40 is configured to trigger the conveyor to correct the conveyor belt 203 when the swing member 30 is pushed to the first preset position by the side of the conveyor belt 203.

[0036] Furthermore, the second detection switch 50 is mounted on the bracket 10 and located at a second preset position on the swing path of the swing member 30. The second detection switch 50 is configured to trigger the conveyor to stop when the swing member 30 is pushed to the second preset position by the side of the conveyor belt 203. The second detection switch 50 is further away from the normal operating position of the conveyor belt 203 than the first detection switch 40.

[0037] Specifically, refer to Figure 2 and Figure 4 The brackets 10 installed on both sides of the conveyor belt 203 are all open to one side of the conveyor belt 203. The swing member 30 can be pushed towards the bracket 10 by the misaligned conveyor belt 203. The first detection switch 40 and the second detection switch 50 are installed on the bracket 10 and are arranged sequentially on the swing path of the swing member 30.

[0038] refer to Figure 7 and Figure 8 Furthermore, the bracket 10 is also provided with a first elongated mounting hole 41 and a second elongated mounting hole 51 for mounting the first detection switch 40 and the second detection switch 50, respectively. This also facilitates the adjustment of the mounting positions of the first detection switch 40 and the second detection switch 50 to suit different deviation detection requirements.

[0039] refer to Figure 2 and Figure 3The first detection switch 40 is installed in a first preset position, corresponding to a slight, correctable deviation of the conveyor belt 203. When the conveyor belt 203 deviates outward, its edge pushes the roller 32, thereby causing the swing member 30 to swing outward. When the swing member 30 swings to the first preset position, it triggers the first detection switch 40. The first detection switch 40 is configured to send a correction signal to the conveyor's correction adjustment device when triggered, so as to perform automatic correction adjustment.

[0040] The second detection switch 50 is installed at a second preset position, which is further away from the normal operating position of the conveyor belt 203 than the first preset position. When the correction adjustment fails or extreme deviation occurs, the oscillating member 30 will continue to swing outward from the first preset position until it swings to the second preset position, triggering the second detection switch 50. The second detection switch 50 is configured to send a stop signal to the conveyor control system when triggered, causing the conveyor to stop, thereby preventing the conveyor belt 203 from colliding with the frame 201 and causing damage.

[0041] It should be noted that, for reference Figure 8 In this embodiment, the first elongated mounting hole 41 and the second elongated mounting hole 51 are located on the same side of the bracket 10, and the position of the second elongated mounting hole 51 is higher than that of the first elongated mounting hole 41. From the perspective of the other side of the bracket 10, referring to... Figure 7 Only the second elongated mounting hole 51 can be observed. Therefore, in Figure 2 From the observation perspective, what can actually be observed are the second elongated mounting hole 51 and the second detection switch 50. Figure 2 The first detection switch 40 shown is a perspective view of the installation position of the first detection switch 40.

[0042] In this embodiment, the first detection switch 40 and the second detection switch 50 can be selected from proximity switches, magnetic switches, limit switches, photoelectric switches, etc.

[0043] Furthermore, the guide block 60 is mounted on the bracket 10 and positioned below the side of the conveyor belt 203 to guide the side of the conveyor belt 203 into contact with the roller 32.

[0044] Specifically, the guide block 60 is made of a self-lubricating material such as polytetrafluoroethylene. Its upper surface is in contact with the conveyor belt 203 and is used to limit the side of the conveyor belt 203 in the vertical direction, preventing the side of the conveyor belt 203 from leaving the effective contact area with the roller 32 due to shaking, sagging, or deformation after carrying materials, thus ensuring the continuous effectiveness of the deviation detection. In addition, the guide block 60 is located below the side of the conveyor belt 203 and does not extend beyond the side of the conveyor belt 203.

[0045] A conveyor in this embodiment includes a deviation correction and adjustment device and a deviation detection device 100 in this embodiment.

[0046] The deviation correction device is used to correct deviations when the conveyor belt 203 runs off track.

[0047] In this embodiment, the first detection switch 40 in the misalignment detection device 100 is communicatively connected to the correction adjustment device. Thus, when the first detection switch 40 of the misalignment detection device 100 detects that the conveyor belt 203 is misaligned, it can send a correction signal to the correction adjustment device for corresponding correction.

[0048] As an exemplary implementation of the belt alignment device, one end of the conveyor's drive roller is mounted on the frame 201 via a fixed bearing seat, while the other end is mounted on an adjustable bearing seat that can move left and right. The adjusting motor controls the adjusting bearing seat to move a predetermined distance in a preset direction via a transmission mechanism. This movement of the adjusting bearing seat changes the angle between the drive roller and the frame 201. Since the conveyor belt 203 is wrapped around the drive roller, this angle change alters the force on the conveyor belt 203, causing it to move in the opposite direction until it returns to its normal operating position, thus achieving belt alignment correction. For example, when the belt deviation detection device 100 detects that the conveyor belt 203 has deviated to the right and triggers a signal, the adjusting motor in the belt alignment device will drive the adjusting bearing seat to move to the right, causing a slight deflection of the drive roller's angle, thereby pulling the conveyor belt 203 back to the left, achieving belt alignment correction.

[0049] Understandably, the deviation correction device can be any known mechanism in the prior art capable of correcting the deviation of the conveyor belt 203, such as a mechanism that adjusts the position or angle of the driving or driven roller, or a mechanism that applies lateral force to the conveyor belt 203 in other ways. It only needs to be able to correct the deviation of the conveyor belt 203; the specific structure of the deviation correction device is not limited.

[0050] Furthermore, in this embodiment, the deviation detection device 100 works in conjunction with the conveyor's deviation correction and adjustment device, and the workflow is as follows: When the conveyor belt 203 is running normally, the roller 32 in the swing member 30 remains stably close to the side of the conveyor belt 203 under the combined action of the inclined leaf spring and gravity.

[0051] When the conveyor belt 203 begins to deviate outwards due to uneven force, its edge pushes the oscillating member 30 to swing outwards, and the leaf spring deforms accordingly. When the swing amplitude reaches the first preset position, the oscillating member 30 triggers the first detection switch 40, which sends a correction signal. After receiving the signal, the correction adjustment device automatically corrects the deviation, causing the conveyor belt 203 to move in the opposite direction, thus correcting the deviation. As the conveyor belt 203 is corrected back to its normal operating track, the outward pushing force of the side of the conveyor belt 203 on the roller 32 disappears, the leaf spring returns to its original deformation, and under the combined action of the inclined leaf spring and gravity, the oscillating member 30 disengages from the first preset position and automatically resets, while maintaining contact with the side of the conveyor belt 203.

[0052] When the correction adjustment fails or extreme deviation occurs, the conveyor belt 203 will continue to deviate, and the swinging component 30 will continue to swing outward. After triggering the second detection switch 50 located at the second preset position, the second detection switch 50 sends a stop signal to the control system of the conveyor, and the conveyor will stop in an emergency, thereby protecting the conveyor belt 203 from damage.

[0053] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A belt misalignment detection device for detecting belt misalignment in a conveyor, characterized in that, include: The bracket is connected to the frame of the conveyor and is arranged in pairs on both sides of the conveyor belt in the conveying direction; An elastic element, one end of which is connected to the bracket; A swinging member, connected to the other end of the elastic member, is swingably connected to the bracket; A roller is rotatably mounted on the oscillating member, and the outer surface of the roller is used to contact the side of the conveyor belt; A first detection switch is disposed on the bracket and located at a first preset position on the swing path of the swinging member. The first detection switch is configured to trigger the conveyor to perform conveyor belt correction when the swinging member is pushed to the first preset position by the side of the conveyor belt.

2. The misalignment detection device according to claim 1, characterized in that, The elastic element is a leaf spring, and the leaf spring is inclined.

3. The misalignment detection device according to claim 2, characterized in that, The leaf spring has an inclination angle of 3-30°.

4. The misalignment detection device according to claim 1, characterized in that, The swing component is also provided with an axle, and the roller is rotatably mounted on the swing component via the axle.

5. The misalignment detection device according to claim 1, characterized in that, Also includes: A second detection switch is mounted on the bracket and located at a second preset position on the swing path of the swinging member. The second detection switch is configured to trigger the conveyor to stop when the swinging member swings to the second preset position by being pushed by the side of the conveyor belt. The second detection switch is located further away from the normal operating position of the conveyor belt than the first detection switch.

6. The misalignment detection device according to claim 1, characterized in that, Also includes: A guide block, mounted on the bracket and positioned below the side of the conveyor belt, is used to guide the side of the conveyor belt into contact with the roller.

7. A conveyor, characterized in that, include: The belt deviation correction device is used to correct and adjust the belt deviation when it runs off track. A deviation detection device, wherein the deviation detection device is the deviation detection device according to any one of claims 1 to 6, and the first detection switch in the deviation detection device is communicatively connected to the deviation correction adjustment device.

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