A belt misalignment switch that can detect the direction of conveyor belt movement

Abstract

A belt misalignment switch for detecting the direction of conveyor belt movement comprises a second connecting shaft inserted into one side of the switch body, which outputs a signal based on the deflection of the second connecting shaft. The front side of the roller stator is fixed to the other end of the second connecting shaft. The rear side of the roller mover is rotatably connected to the rear side of the roller stator via a first connecting shaft. The lower end of the roller is inserted into the front side of the roller mover. A return spring is provided between the lower end of the front side of the roller mover and the roller stator. The roller stator has an output unit driven by the roller mover, which outputs a signal indicating the direction of conveyor belt movement. Advantages include: stable structure, long service life, and the ability to detect belt misalignment and provide misalignment alarm.

Description

Technical Field

[0001] This invention patent relates to the field of conveyor auxiliary equipment technology, and in particular to a belt misalignment switch that can detect the running direction of the conveyor belt. Background Technology

[0002] The belt misalignment switch is mainly used for conveyor belt misalignment alarm and is an indispensable and important switch for the safety protection of conveyors. When the conveyor belt deviates, the edge of the conveyor belt will exert an outward pushing force on the roller of the belt misalignment switch body, causing the roller to deflect at a certain angle relative to the belt misalignment switch body. When the deflection angle is greater than 15°, the internal output unit used to control the first-level alarm will be activated. When the deflection angle is greater than 30°, the internal output unit used to control the second-level alarm will be activated.

[0003] The application of conveyor belt correction devices is becoming increasingly widespread. Belt misalignment switches provide control signals to these devices, enabling them to automatically correct belt misalignment. However, with advancements in conveyor technology, conveyors no longer operate in one direction only; the belt's direction can be switched as needed. Without this information, the correction device will experience control chaos and fail to achieve automatic correction. This necessitates the addition of specialized equipment to detect the belt's direction, increasing costs and hindering the goal of integrated, commission-free operation. Summary of the Invention

[0004] The purpose of this invention is to solve the existing technical problems by proposing a belt misalignment switch that can detect the running direction of a conveyor belt.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a belt misalignment switch capable of detecting the running direction of a conveyor belt, comprising a belt misalignment switch body, a roller, a roller mover, a return spring, a roller stator, a first connecting shaft, a second connecting shaft, and an output unit; one end of the second connecting shaft is inserted into one side of the belt misalignment switch body, and the belt misalignment switch body outputs a signal according to the deflection amount of the second connecting shaft; the front side of the roller stator is fixed to the other end of the second connecting shaft, the rear side of the roller mover is rotatably connected to the rear side of the roller stator through the first connecting shaft, the lower end of the roller is inserted into the front side of the roller mover, a return spring is provided between the lower end of the front side of the roller mover and the roller stator, and an output unit is provided on the roller stator through which the roller mover drives, and the output unit sends out a conveyor belt running direction signal.

[0006] Furthermore, the roller stator is provided with a first shaft connection hole and a second shaft connection hole. It is connected to the roller mover through the first connecting shaft and to the body of the deviation switch through the second connecting shaft. The roller stator is provided with a limit end face. The roller mover rotates in a limited manner around the first connecting shaft within the limit range formed by the limit end face provided by the roller stator.

[0007] Furthermore, an output unit is set within the rotation range of the roller mover, and the roller mover controls the operation of the output unit at two limit end faces.

[0008] Furthermore, one end of the return spring is connected to the lower front end of the roller mover, and the other end of the return spring is connected to the roller stator.

[0009] The advantages of this invention are: stable structure, long service life, and the ability to detect belt misalignment and the direction of conveyor belt movement. Attached Figure Description

[0010] Figure 1 Schematic diagram of the belt misalignment switch structure Figure 1 .

[0011] Figure 2 Schematic diagram of the belt misalignment switch structure Figure 2 .

[0012] Figure 3 This is a bottom view of the first type of conveyor belt running direction for the misalignment switch.

[0013] Figure 4 This is a bottom view of the second type of conveyor belt running direction for the belt misalignment switch.

[0014] Figure 5 This is a side view of the deviation switch.

[0015] Figure 6 This is a schematic diagram of the installation of the belt misalignment switch.

[0016] 1 represents a conveyor belt;

[0017] 2 represents a roller;

[0018] 3 is the misalignment switch; 31 is the roller mover; 32 is the reset spring; 33 is the roller stator; 34 is the first connecting shaft; 35 is the second connecting shaft; 36 is the output unit; 311 is the other end of the reset spring; 331 is one end of the reset spring.

[0019] 4 is the mounting bracket;

[0020] 5 represents the conveyor belt drive roller layer;

[0021] 6 represents the base;

[0022] L is the distance from the edge of the conveyor belt to the roller;

[0023] h is the distance from the top of the roller to the point of contact between the roller and the conveyor belt. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Example 1 combined with appendix Figure 1-6 A belt misalignment switch for detecting the direction of conveyor belt operation includes a belt misalignment switch body 3, a roller 2, a roller mover 31, a return spring 32, a roller stator 33, a first connecting shaft 34, a second connecting shaft 35, and an output unit 36. One end of the second connecting shaft 35 is inserted into one side of the belt misalignment switch body 3, and the belt misalignment switch body 3 outputs a signal according to the deflection amount of the second connecting shaft 35. The front side of the roller stator 33 is fixed to the other end of the second connecting shaft 35. The rear side of the roller mover 31 is rotatably connected to the rear side of the roller stator 33 through the first connecting shaft 34. The lower end of the roller 2 is inserted into the front side of the roller mover 31. A return spring 32 is provided between the lower end of the front side of the roller mover 31 and the roller stator 33. The roller stator 33 is provided with an output unit 36 ​​driven by the roller mover 31, and the output unit sends a signal indicating the direction of conveyor belt operation.

[0026] A belt misalignment switch for detecting the running direction of a conveyor belt has a roller stator with a first shaft connection hole and a second shaft connection hole. The roller stator is connected to the roller mover via the first connecting shaft and to the belt misalignment switch body via the second connecting shaft. The roller stator is provided with a limit end face, and the roller mover can only rotate within a limited range around the first connecting shaft within the limit range formed by the limit end face provided by the roller stator.

[0027] A belt misalignment switch that can detect the direction of conveyor belt operation, the output unit includes a micro switch and a photoelectric sensor.

[0028] A belt misalignment switch that can detect the running direction of a conveyor belt has an output unit set within the rotation range of a roller mover. The roller mover controls the operation of the output unit at its maximum and minimum limit end faces.

[0029] A belt misalignment switch for detecting the direction of conveyor belt movement includes a roller stator 33 with a plate as its main body. A protrusion is provided on the rear side of the plate, and a vertical first shaft hole is provided on the protrusion. The rear side of the roller mover 31 has two parallel meshing parts, each of which is provided with a vertical second shaft hole. A meshing cavity for the protrusion is provided between the two parallel meshing parts. The front side of the protrusion extends into the meshing cavity. A first connecting shaft 34 passes sequentially through the second shaft hole of the upper meshing part, the first shaft hole of the protrusion, and the second shaft hole of the lower meshing part, rotatably connecting the rear side of the roller mover 31 with the protrusion of the roller stator 33.

[0030] A belt misalignment switch that can detect the running direction of a conveyor belt has an output unit 36 ​​on the rear side of the lower end of the protrusion that drives and emits a signal of the running direction of the conveyor belt. The actuation lever of the output unit 36 ​​is driven to close and open when the roller mover 31 swings left and right from the rear side.

[0031] A belt misalignment switch that can detect the direction of conveyor belt running has a recess on the main body of the roller stator 33 to allow the roller mover 31 to swing left and right.

[0032] A belt misalignment switch that can detect the running direction of a conveyor belt has one end 331 of a reset spring connected to the lower front end of the roller mover 31, and the other end 311 of the reset spring connected to the roller stator 33.

[0033] A belt misalignment switch that can detect the direction of conveyor belt movement, wherein the rear side of the roller mover 31 is square and the top corner is rounded.

[0034] A belt misalignment switch that can detect the running direction of a conveyor belt has a third shaft hole on the front side of the roller stator 33, and the other end of the second connecting shaft 35 passes through the third shaft hole and is fixedly connected to the roller stator 33.

[0035] A belt misalignment switch for detecting the direction of conveyor belt movement includes a roller 2 whose central shaft is fixed to a roller mover 31. The roller mover 31 is fixed to a roller stator 33 via a connecting shaft 34. The roller mover 31 can move freely within a fixed groove in the roller stator 33 around the connecting shaft 34. To restrain the swaying of the roller mover 31, a return spring 32 is provided between the roller mover 31 and the roller stator 33. When no external force is applied to the roller, the roller mover 31 and the roller stator 33 are in their initial positions.

[0036] A belt misalignment switch that can detect the running direction of a conveyor belt, wherein the conveyor belt running direction is detected by the distance h from the edge of the conveyor belt to the roller and the distance L from the upper end of the roller to the contact point between the roller and the conveyor belt;

[0037] When the conveyor belt deviates from its designated path, the edge of the conveyor belt moves a distance h from the edge of the conveyor belt to the roller and touches the roller. The conveyor belt will generate two forces on the roller, namely an outward pushing force and a force in the direction of the conveyor belt's movement. The force in the direction of the conveyor belt's movement acts on the roller mover 31 through the roller 2. When the force is opposite to the force of the return spring 32 and is greater than the tension of the return spring 32, the roller mover 31 is pushed to the far side and remains in this state until the force disappears. During this period, the output unit 36 ​​action lever is released and the output unit 36 ​​contact is disconnected.

[0038] When the conveyor belt deviates from its original position, the force in the direction of the conveyor belt's movement acts on the roller 2 moving part 31. When the force is the same as that of the return spring 32, the roller moving part 31 and the roller stator 33 are in their initial positions and remain in this state. During this period, the output unit 36's action lever is squeezed, and the output unit 36's contacts are closed.

[0039] A belt misalignment switch that can detect the running direction of a conveyor belt, wherein the output unit 36 ​​of adjacent belt misalignment switches has opposite square action bars when installed.

[0040] When the conveyor belt deviates from its designated path, the edge of the conveyor belt touches the roller. The outward thrust of the conveyor belt acts on the roller mover 31 through roller 2. Since the roller mover 31 is confined to the roller stator 33, the roller stator 33 will deflect around the second connecting shaft 35 of the deviation switch body. The second connecting shaft 35 drives the internal mechanism of the deviation switch to output a signal according to the deflection amount of the second connecting shaft 35. When the external force disappears, the internal reset mechanism of the deviation switch body restores the roller stator 33 to its initial position through the second connecting shaft 35, and the deviation output signal controlled by the internal mechanism of the deviation switch is restored.

[0041] When the deviation switch sends a deviation signal, the deviation correction device performs deviation correction control. Therefore, after receiving the deviation signal output by the deviation switch, the deviation correction control can be implemented according to the status information of the output unit 36 ​​contact.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A belt misalignment switch for detecting the running direction of a conveyor belt, comprising a belt misalignment switch body (3), a roller (2), a roller mover (31), a reset spring (32), a roller stator (33), a first connecting shaft (34), a second connecting shaft (35), and an output unit (36); one end of the second connecting shaft (35) is inserted into one side of the belt misalignment switch body (3), and the belt misalignment switch body (3) outputs a signal according to the deflection amount of the second connecting shaft (35); characterized in that: The front side of the roller stator (33) is fixed on the other end of the second connecting shaft (35). The rear side of the roller mover (31) is rotatably connected to the rear side of the roller stator (33) through the first connecting shaft (34). The lower end of the roller (2) is inserted into the front side of the roller mover (31). A return spring (32) is provided between the lower end of the front side of the roller mover (31) and the roller stator (33). The roller stator (33) is provided with an output unit (36) driven by the roller mover (31). The output unit sends out a signal indicating the direction of the conveyor belt.

2. The belt misalignment switch for detecting the running direction of a conveyor belt according to claim 1, characterized in that: The roller stator (33) is provided with a first shaft connection hole and a second shaft connection hole. It is connected to the roller mover (31) through the first connecting shaft (34) and to the deviation switch body (3) through the second connecting shaft (35). The roller stator (33) is provided with a limit end face. The roller mover (31) rotates in a limited manner around the first connecting shaft (34) within the limit range formed by the limit end face provided by the roller stator (33).

3. A belt misalignment switch for detecting the running direction of a conveyor belt according to claim 2, characterized in that: An output unit (36) is set within the rotation range of the roller mover (31), and the roller mover (31) controls the operation of the output unit (36) at the two limit end faces.

4. A belt misalignment switch for detecting the running direction of a conveyor belt according to claim 3, characterized in that: One end of the return spring (32) is connected to the lower front end of the roller mover (31), and the other end of the return spring (32) is connected to the roller stator (33).

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