Anti-winding device of positioner

Abstract

The utility model discloses an anti-winding device of a positioner, which comprises a linear guide rail arranged on the front surface of the positioner, a guide rail sliding block is arranged on the linear guide rail in a sliding manner, a travel switch touch block is arranged on the guide rail sliding block, and a bracket is arranged on the front surface of a turntable of the positioner. When the turntable rotates forwards and backwards, the bracket drives the travel switch touch block to move leftwards and rightwards, and a first travel switch and a second travel switch for monitoring the travel of the travel switch touch block are respectively arranged on two sides of the travel switch touch block on the front surface of the positioner; the first travel switch and the second travel switch are respectively provided with a first rotation sensing part and a second rotation sensing part which are matched with the travel switch touch block, and the first travel switch and the second travel switch are electrically connected with a control system of the positioner. According to the winding prevention device of the positioner, the rotation angle of the positioner can be limited, and a cable or a pipeline is prevented from being twisted or broken.

Description

Technical Field

[0001] The utility model relates to a wire-winding prevention device for a positioner, belonging to the technical field of positioner improvement. Background Art

[0002] In the field of mechanical engineering, a positioner is a device used to rotate, flip or change the position of an object. In some application scenarios, the positioner needs to thread cables or pipes internally and rotate or flip them externally. However, there are some potential problems in such operations, especially when the positioner may lose control in the event of an electrical failure, causing the cables or pipes to be twisted or broken. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a positioner anti-winding device which can limit the rotation angle of the positioner to avoid the cables or pipelines being twisted or broken.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A winding prevention device for a positioner comprises a linear guide rail arranged on the front face of the positioner, a guide rail slider being slidably arranged on the linear guide rail, a travel switch contact block being arranged on the guide rail slider, a bracket being arranged on the front face of a turntable of the positioner, the travel switch contact block being driven to move left and right by the bracket when the turntable rotates forwards and reversely, a first travel switch and a second travel switch for monitoring the travel of the travel switch contact block are respectively arranged on both sides of the travel switch contact block on the front face of the positioner, a first rotation sensing part and a second rotation sensing part cooperating with the travel switch contact block are respectively arranged on the first travel switch and the second travel switch, and the first travel switch and the second travel switch are electrically connected to the control system of the positioner.

[0006] The travel switch contact block comprises a base, the base is fixed on the guide rail slider, and an L-shaped block is arranged on the base.

[0007] A baffle is arranged on the front of the positioner, and a slot for the L-shaped block to move is opened on the baffle.

[0008] The linear guide rail is fixed to the front side of the positioner by means of a first screw.

[0009] The first travel switch and the second travel switch are fixed to the front side of the positioner by means of a second screw.

[0010] The linear guide rail, the guide rail slider, the travel switch contact block, the first travel switch and the second travel switch are located directly below the turntable.

[0011] The beneficial effects of the utility model: the utility model provides a winding prevention device for a positioner, and when the turntable rotates forward and backward, the travel switch contact block is driven to move left and right through the bracket, and the front of the positioner is provided with a first travel switch and a second travel switch for monitoring the travel of the travel switch contact block on both sides of the travel switch contact block, and the first travel switch and the second travel switch are electrically connected to the control system of the positioner. The travel switch monitors the deflection signal generated by the rotation sensing part of the travel switch driven by the travel switch contact block and outputs it to the control system of the positioner to control the power off of the positioner, which can limit the rotation angle of the positioner and ensure that the flipping angle of the turntable of the positioner does not exceed 360°, thereby avoiding twisting or breaking of cables or pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of a positioner anti-winding device of the utility model:

[0013] Figure 2 for Figure 1 Schematic diagram of the state where the middle bracket moves to the position where the travel switch touches the block;

[0014] Figure 3 for Figure 1 The structural diagram of the monitoring part;

[0015] Figure 4 for Figure 3 Schematic diagram of the structure after removing the baffle;

[0016] Figure 5 for Figure 3 A schematic diagram of the front view structure of

[0017] Figure 6 for Figure 3 Schematic diagram of the structure viewed from above;

[0018] Figure 7 for Figure 3 Schematic diagram of the left view structure.

[0019] The reference numerals in the figure are as follows: 1-linear guide; 2-guide rail slider; 3-travel switch contact block; 4-first travel switch; 5-second travel switch; 6-baffle; 7-positioner; 31-base; 32-L-shaped block; 41-first rotation sensing part; 51-second rotation sensing part; slot 61; 71-turntable; 72-bracket. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are not intended to limit the protection scope of the present invention.

[0021] like Figures 1 to 7As shown, the utility model discloses a winding prevention device for a positioner, comprising a linear guide 1 arranged on the front of the positioner 7, a guide slider 2 being slidably arranged on the linear guide 1, and the linear guide 1 and the guide slider 2 are tightly matched without obvious friction. A travel switch contact block 3 is arranged on the guide slider 2, which is used to trigger the travel switch group. The travel switch contact block 3 includes a base 31, and the base 31 is fixed on the guide slider 2, and an L-shaped block 32 is arranged on the base 31. A baffle 6 is arranged on the front of the positioner 7, and a slot 61 for the movement of the L-shaped block 32 is opened on the baffle 6. The baffle 6 can limit the travel of the travel switch contact block 3 to move left and right.

[0022] A bracket 72 is provided on the front of the turntable 71 of the positioner 7, and the travel switch contact block 3 is driven to move left and right through the bracket 72 when the turntable 71 rotates forward and reversely. The linear guide 1 is selected from a material with a low friction coefficient to improve the accuracy of the travel switch contact block 3 in motion.

[0023] The front of the positioner 7 is provided with a first travel switch 4 and a second travel switch 5 for monitoring the travel of the travel switch contact block 3, respectively, on both sides of the travel switch contact block 3. The first travel switch 4 and the second travel switch 5 are respectively provided with a first rotation sensing part 41 and a second rotation sensing part 51 that cooperate with the travel switch contact block 3, to ensure that the turning angle of the turntable 71 of the positioner 7 does not exceed 360°. The first travel switch 4 and the second travel switch 5 are electrically connected to the control system of the positioner 7 through an electrical connection line. When the travel switch contact block 3 contacts the first rotation sensing part 41 or the second rotation sensing part 51, the first rotation sensing part 41 or the second rotation sensing part 51 will deflect, and the first travel switch 4 and the second travel switch 5 will detect the deflection signal, transmit it to the control system of the positioner 7, and control the positioner 7 to cut off the power. In addition, the first rotation sensing part 41 or the second rotation sensing part 51 has a self-reset function, and can push the travel switch contact block 3 back to the initial middle position after the positioner 7 stops.

[0024] In the utility model, the linear guide 1, the guide slider 2, the travel switch contact block 3, the first travel switch 4 and the second travel switch 5 are located directly below the turntable 71. In addition, the linear guide 1 is fixed to the front of the positioner 7 by a first screw, and the first travel switch 4 and the second travel switch 5 are fixed to the front of the positioner 7 by a second screw. The positions of the linear guide 1, the first travel switch 4 and the second travel switch 5 can be adjusted to adapt to positioners of different models and specifications.

[0025] The working principle of the utility model is: Figure 1 The normal state position of the turntable 71 on the positioner 7 is as follows: Figure 2When the position is reached, the bracket 72 on the turntable 71 drives the travel switch contact block 3 to move to the left. The travel switch contact block 3 touches the first rotation sensing part 41 of the first travel switch 4. The first rotation sensing part 41 deflects, and the first travel switch 4 detects the deflection signal and transmits it to the control system of the positioner 7 to control the positioner 7 to cut off the power. Similarly, when the turntable 71 moves counterclockwise to Figure 2 When the second travel switch 5 is in the right position, the bracket 72 on the turntable 71 drives the travel switch contact block 3 to move rightward. The travel switch contact block 3 touches the second rotation sensing part 51 of the second travel switch 5. The second rotation sensing part 51 deflects, and the second travel switch 5 detects the deflection signal and transmits it to the control system of the positioner 7 to control the positioner 7 to cut off the power.

[0026] The above are only preferred implementations of the present invention. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A positioner anti-winding device, characterized in that: The invention comprises a linear guide rail (1) arranged on the front of a positioner (7), a guide rail slider (2) being slidably arranged on the linear guide rail (1), a travel switch contact block (3) being arranged on the guide rail slider (2), a bracket (72) being arranged on the front of a turntable (71) of the positioner (7), and the travel switch contact block (3) is driven to move left and right through the bracket (72) when the turntable (71) rotates forwards and reversely, a first travel switch (4) and a second travel switch (5) for monitoring the travel of the travel switch contact block (3) are arranged on both sides of the travel switch contact block (3) on the front of the positioner (7), a first rotation sensing part (41) and a second rotation sensing part (51) cooperating with the travel switch contact block (3) are arranged on the first travel switch (4) and the second travel switch (5), respectively, and the first travel switch (4) and the second travel switch (5) are electrically connected to the control system of the positioner (7).

2. According to claim 1, a positioner anti-winding device is characterized in that: The travel switch contact block (3) comprises a base (31), the base (31) is fixed on the guide rail slider (2), and an L-shaped block (32) is arranged on the base (31).

3. According to claim 2, a positioner anti-winding device is characterized in that: A baffle (6) is arranged on the front of the positioner (7), and a slot (61) for the L-shaped block (32) to move is provided on the baffle (6).

4. The anti-winding device of a positioner according to claim 1, characterized in that: The linear guide rail (1) is fixed to the front side of the positioner (7) by means of a first screw.

5. The anti-winding device of a positioner according to claim 1, characterized in that: The first travel switch (4) and the second travel switch (5) are fixed to the front side of the positioner (7) by means of a second screw.

6. The anti-winding device of a positioner according to claim 1, characterized in that: The linear guide rail (1), the guide rail slider (2), the travel switch contact block (3), the first travel switch (4) and the second travel switch (5) are located directly below the rotating disk (71).

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