Deviation switch capable of detecting running direction of conveying belt

Abstract

According to the deviation switch capable of detecting the running direction of the conveying belt, one end of a second connecting shaft is inserted into one side of a deviation switch body, and the deviation 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 rotor is rotatably connected with the rear side of the roller stator through a first connecting shaft, the lower end of the roller is inserted into the front side of the roller rotor, a reset spring is arranged between the lower end of the front side of the roller rotor and the roller stator, and an output unit driven by the roller rotor is arranged on the roller stator. And the output unit sends out a conveyor belt running direction signal. The device has the advantages of stable structure and long service life, and has the functions of off-tracking alarm and detection of the running direction of the conveying belt.

Description

Technical Field

[0001] The patent of this invention relates to the technical field of conveyor auxiliary equipment, and in particular to a deviation switch that can detect the running direction of the conveyor belt. Background Art

[0002] The deviation switch is primarily used to warn conveyor belts of deviation and is an essential switch for conveyor safety. When the conveyor belt deviates, the edge of the belt exerts an outward force on the rollers of the deviation switch, causing the rollers and the deviation switch to deflect at a certain angle. If the deviation exceeds 15°, the output unit for the first-level alarm is activated. If the deviation exceeds 30°, the output unit for the second-level alarm is activated.

[0003] The use of conveyor belt deviation correction devices is becoming increasingly popular. A deviation switch provides a control signal to the device, allowing it to automatically correct any deviation. With the advancement of conveyor technology, conveyors are no longer limited to unidirectional operation; the direction of the conveyor belt can be switched at any time based on conveying needs. Without this information, the deviation correction device will experience control confusion, making automatic deviation correction impossible. This requires additional equipment specifically designed to detect the conveyor belt's direction, increasing costs and hindering the integrated, debug-free nature of the deviation correction device. Summary of the Invention

[0004] The purpose of the present invention is to solve the existing technical problems and to propose a deviation switch that can detect the running direction of a conveyor belt.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a deviation switch capable of detecting the running direction of a conveyor belt, comprising a deviation switch body, a roller, a roller mover, a reset 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 deviation switch body, and the deviation 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 reset spring is provided between the lower end of the front side of the roller mover and the roller stator, and the roller stator is provided with an output unit driven by the roller mover, and the output unit sends a conveyor belt running direction signal.

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

[0007] Furthermore, an output unit is provided within the rotation range of the roller mover, and the roller mover controls the action of the output unit at two limiting end surfaces.

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

[0009] The beneficial effects of the present invention are: stable structure, long service life, deviation alarm and detection of the running direction of the conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

[0015] Figure 6 This is the installation diagram of the deviation switch.

[0016] 1 is a conveyor belt; 2 is a roller; 3 is the deviation switch; 31 is the roller mover; 32 is the return 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 return spring; 331 is one end of the return spring; 4 is a mounting frame; 5 is the conveyor belt driving roller layer; 6 is a base; L is the distance from the edge of the conveyor belt to the roller; h is the distance from the upper end of the roller to the contact point between the roller and the conveyor belt. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Example 1 Combined with the attached Figures 1-6A deviation switch for detecting the running direction of a conveyor belt includes a deviation 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 deviation switch body 3, and the deviation 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, and a return spring 32 is provided between the lower end of the front side of the roller mover 31 and the roller stator 33, and the roller stator 33 is provided with an output unit 36 ​​driven by the roller mover 31, and the output unit sends a conveyor belt running direction signal.

[0019] A deviation switch that can detect the running direction of a conveyor belt. The roller stator is provided with a first axis connecting hole and a second axis connecting hole. It is connected to the roller mover through the first connecting axis and connected to the deviation switch body through the second connecting axis. The roller stator is provided with a limit end surface. The roller mover can only rotate around the first connecting axis within a limit range formed by the limit end surface provided on the roller stator.

[0020] A deviation switch capable of detecting the running direction of a conveyor belt, wherein the output unit comprises a micro switch and a photoelectric sensor.

[0021] A deviation switch capable of detecting the running direction of a conveyor belt has an output unit arranged within the rotation range of a roller mover, and the roller mover controls the action of the output unit at the maximum and minimum limit end faces.

[0022] A deviation switch that can detect the running direction of the conveyor belt. The main body of the roller stator 33 is a plate body, and a raised portion is provided on the rear side of the plate body. A vertical first axial hole is provided on the raised portion. The rear side of the roller mover 31 is two parallel bite parts, and both bite parts are provided with a vertical second axial hole. A raised portion bite cavity is provided between the two parallel bite parts, and the front side of the raised portion extends into the raised portion bite cavity. The first connecting shaft 34 passes through the second axial hole of the bite part at the upper end, the first axial hole of the raised portion and the second axial hole of the bite part at the lower end in sequence, and rotates to connect the raised portion of the rear side of the roller mover 31 and the roller stator 33.

[0023] A deviation switch that can detect the running direction of the conveyor belt. An output unit 36 ​​that drives and sends a conveyor belt running direction signal is provided at the rear side of the lower end of the protrusion. The action lever of the output unit 36 ​​is driven to close and open when the rear side of the roller mover 31 swings left and right.

[0024] A deviation switch capable of detecting the running direction of a conveyor belt is provided on the main body of the roller stator 33, which allows the roller mover 31 to swing left and right.

[0025] A deviation switch capable of detecting the running direction of a conveyor belt, wherein one end 331 of a return spring is connected to the front lower end of a roller mover 31 , and the other end 311 of the return spring is connected to a roller stator 33 .

[0026] A deviation switch capable of detecting the running direction of a conveyor belt, wherein the rear side of a roller mover 31 is square and the top corners are excessively rounded.

[0027] A deviation switch for detecting the running direction of a conveyor belt is provided. A third shaft hole is provided on the front side of the roller stator 33. The other end of the second connecting shaft 35 passes through the third shaft hole and is fixedly connected to the roller stator 33.

[0028] A conveyor belt deviation switch detects the direction of travel. The central axis of the roller 2 is fixed to the roller mover 31, which is fixed to the roller stator 33 via a connecting shaft 34. The roller mover 31 can move freely around the connecting shaft 34 within the fixed groove of the roller stator 33. To prevent the roller mover 31 from wobbling, a return spring 32 is installed between the roller mover 31 and the roller stator 33. When there is no external force acting on the roller, the roller mover 31 and the roller stator 33 assume their initial position.

[0029] A deviation switch that can detect the running direction of the conveyor belt. The conveyor belt running direction detection includes 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. When the conveyor belt deviates, the edge of the conveyor belt moves the distance h from the edge of the conveyor belt to the roller and then touches the roller. The conveyor belt will generate two forces on the roller, namely, an outward thrust and a force in the direction of the conveyor belt running. The force in the direction of the conveyor belt running acts on the roller mover 31 through the roller 2. When it 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 continues to maintain the state until the force disappears. During this period, the action bar of the output unit 36 ​​is released and the contact of the output unit 36 ​​is disconnected.

[0030] When the conveyor belt deviates, the force in the running direction of the conveyor belt acts on the roller mover 31 through the roller 2. When the force is equal to the force of the return spring 32, the roller mover 31 and the roller stator 33 are in the initial position and the state is maintained continuously. During this period, the action bar of the output unit 36 ​​is squeezed and the contacts of the output unit 36 ​​are closed.

[0031] A deviation switch capable of detecting the running direction of a conveyor belt, wherein adjacent deviation switches have their output units 36 action bars in opposite directions when installed.

[0032] When the conveyor belt veers, its edge contacts the rollers. The outward thrust of the conveyor belt acts on the roller mover 31 through the rollers 2. Because the roller mover 31 is constrained to the roller stator 33, the roller stator 33 rotates about the second connecting shaft 35 of the yaw switch body. This second connecting shaft 35 drives the internal mechanism of the yaw switch to output a signal based on the amount of deflection. When the external force disappears, the reset mechanism within the yaw switch body returns the roller stator 33 to its initial position via the second connecting shaft 35, and the yaw output signal controlled by the internal mechanism is restored.

[0033] The deviation correction device performs deviation correction control when the deviation switch sends a deviation signal. Therefore, after obtaining the deviation signal output by the deviation switch, the deviation correction control corresponding to the current conveyor belt running direction can be obtained according to the contact status information of the output unit 36.

[0034] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A deviation switch capable of detecting the running direction of a conveyor belt, comprising a deviation 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 deviation switch body (3), and the deviation switch body (3) outputs a signal according to the deflection amount of the second connecting shaft (35); and the characteristics are: 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), and the roller stator (33) is provided with an output unit (36) driven by the roller mover (31), and the output unit sends a conveyor belt running direction signal.

2. A conveyor belt deviation switch capable of 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, is connected to the roller mover (31) via the first connection shaft (34), and is connected to the deviation switch body (3) via the second connection shaft (35). The roller stator (33) is provided with a limited end face, and the roller mover (31) is limitedly rotated around the first connection shaft (34) within a limited range formed by the limited end face provided on the roller stator (33).

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

4. A conveyor belt deviation switch capable of 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 end of the front side 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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