Sheath connecting rod mechanism capable of detecting the state of telescopic swing cylinder

Abstract

The present invention provides a sheath connecting rod mechanism capable of detecting the state of a telescopic swing cylinder, comprising a telescopic sheath and a telescopic connecting rod, wherein a first proximity sensor, a second proximity sensor, and a third proximity sensor are provided on the telescopic sheath, wherein the second proximity sensor and the third proximity sensor are located at the bottom of the telescopic sheath and are arranged horizontally at 90 degrees, and the first proximity sensor is located at the top of the telescopic sheath, on a side of the proximity sensor 2 away from the proximity sensor 3; the outer wall of the telescopic connecting rod has waist-shaped notches and circular notches arranged up and down; the detection distance of the three proximity sensors is 2 mm, the distance between the inner end detection parts of the three proximity sensors and the telescopic connecting rod is less than 2 mm, and the distance between the inner end detection parts of the three proximity sensors and the inner ends of the waist-shaped notch and the circular notch is greater than 2 mm; the telescopic connecting rod can only rotate when the top end is located at the inner top end of the telescopic sheath; the upper and lower positions and whether the telescopic connecting rod rotates are judged by the gain or loss of the three proximity sensor signals.

Description

Technical Field

[0001] The invention relates to the field of telescopic swing cylinders for machining engine cylinder bodies, and in particular to a sheath connecting rod mechanism capable of detecting the state of the telescopic swing cylinder. Background Art

[0002] In the cylinder production line, the engine cylinder moves from one end of the roller conveyor to the processing position. At the processing position, the direction of the cylinder needs to be turned 90 degrees so that it can enter the cylinder processing center for processing. In the prior art, in order to reduce manpower and to ensure the safety and integration of the equipment, the active device for turning the direction of the cylinder usually adopts a telescopic swing cylinder, which can be used in conjunction with a clamping claw to grab and rotate the cylinder. When used in conjunction with automation, a telescopic swing cylinder with its own sensor is usually used. This type of telescopic swing cylinder is expensive and requires the cooperation of suppliers for maintenance in the later stage, which is very troublesome and increases the cost of the entire project. CN107530848B discloses a clamping device, which includes a detection part, the detection part is used to detect the rotation position of the clamping arm; the cam surface proximity sensor is used to detect the position on the cam surface that is displaced as the rotatable shaft rotates. This patent can detect the rotation position of the clamping arm, but the telescopic swing cylinder needs to detect the rotation and telescopic status, and the telescopic link must be rotated and then telescoped in a safe position to ensure safety. The proximity sensor is inexpensive. In order to ensure safety, reliability and maintainability while reducing costs, it is very important to use the proximity sensor to detect the status of the telescopic swing cylinder while ensuring the safe rotation and telescoping of the telescopic link. Summary of the Invention

[0003] To solve the above problems, the present invention provides a sheath connecting rod mechanism capable of detecting the state of a telescopic swing cylinder, comprising a telescopic sheath and a telescopic connecting rod. The telescopic sheath is provided with a first proximity sensor, a second proximity sensor, and a third proximity sensor. The second proximity sensor and the third proximity sensor are located at the bottom of the telescopic sheath and arranged horizontally at 90 degrees. The first proximity sensor is located at the top of the telescopic sheath, on the side of the proximity sensor away from the third proximity sensor.

[0004] The outer wall of the telescopic connecting rod has waist-shaped notches and circular notches arranged up and down;

[0005] The detection distance of the three proximity sensors is 2mm. The distance between the inner detection parts of the three proximity sensors and the telescopic connecting rod is less than 2mm. The distance between the inner detection parts of the three proximity sensors and the inner ends of the waist-shaped notch and the circular notch is greater than 2mm.

[0006] The telescopic connecting rod can only rotate when its top end is located at the top end inside the telescopic sheath.

[0007] A further improvement is that the top of the telescopic connecting rod is a square part and the main part is a cylindrical part; the inner top of the telescopic sheath is a circular opening and the main part is a cylindrical hole. The cylindrical hole is also provided with a square groove for matching the limiting passage of the square part, and the diameter of the circular opening is greater than the diagonal length of the square groove.

[0008] A further improvement is that when the square portion is located in the circular opening, the cylindrical portion is located in the cylindrical hole, and the telescopic link can then rotate. Since the telescopic link needs to be telescoped, the telescopic link can only be rotated 90° before it can be rotated and then telescoped.

[0009] A further improvement is that the bottom of the telescopic connecting rod is a connecting end for connecting other parts, and three threaded holes are opened on the periphery of the telescopic sheath, and the threaded holes are used to install proximity sensors.

[0010] A further improvement is that, initially, the second proximity sensor, the waist-shaped notch and the circular notch are on a straight line in the same direction as the telescopic link, and the up and down position and rotation of the telescopic link are determined by the gain or loss of the three proximity sensor signals.

[0011] A further improvement is that the gain or loss of the three proximity sensor signals is represented by 1 and 0, where 0 represents no signal and 1 represents a signal:

[0012] When the telescopic link is at the bottom and not rotating, the signals of proximity sensor 1, proximity sensor 2, and proximity sensor 3 are 0 0 1 respectively;

[0013] When the telescopic link is at the bottom and rotated 90 degrees toward proximity sensor 3, the signals of proximity sensor 1, proximity sensor 2, and proximity sensor 3 are 0 1 0 respectively;

[0014] When the telescopic link is at the top and not rotating, the signals of proximity sensor 1, proximity sensor 2, and proximity sensor 3 are 1 0 1 respectively;

[0015] When the telescopic link is at the top and rotated 90 degrees toward proximity sensor 3, the signals of proximity sensor 1, proximity sensor 2, and proximity sensor 3 are 1 1 0, respectively.

[0016] A further improvement is that when the telescopic link is at the bottom and not rotating, proximity sensor 1 cannot sense the telescopic link, proximity sensor 2 is located at the waist-shaped notch, and proximity sensor 3 senses the top of the telescopic link;

[0017] When the telescopic link is at the bottom and rotated 90 degrees toward the proximity sensor 3, the proximity sensor 1 cannot sense the telescopic link, the proximity sensor 3 is located at the waist-shaped notch, and the proximity sensor 2 senses the top of the telescopic link.

[0018] A further improvement is that when the telescopic link is at the top and not rotating, proximity sensor 1 senses the top end of the telescopic link, proximity sensor 2 is located at the circular notch, and proximity sensor 3 senses the bottom end of the telescopic link;

[0019] When the telescopic link is at the top and rotated 90 degrees toward proximity sensor three, proximity sensor one senses the top end of the telescopic link, proximity sensor three is located at the circular notch, and proximity sensor two senses the bottom end of the telescopic link.

[0020] Beneficial effects of the present invention: 1. The present invention senses the telescopic link by arranging three proximity sensors on the telescopic cover. The positions of the three proximity sensors are different, two of which are arranged horizontally at 90° at the bottom, and the other is arranged offset at the top. The telescopic link cooperates with the work of the three proximity sensors through waist-shaped notches and circular notches arranged above and below. The detection distance of the proximity sensor is 2mm. In this way, the relative position of the telescopic link and the telescopic cover can be judged based on the detection signal of the proximity sensor to determine whether it is rotated and telescoped.

[0021] Second, the square portion of the telescopic connecting rod of the present invention can only be rotated when it is located in the circular opening in the telescopic sheath. Moreover, due to the coincidence and limitation of the square groove and the square portion, the telescopic connecting rod can only be rotated 90° before the telescopic operation can be performed. The rotation operation cannot be performed in other cases, which can ensure the safety of the telescopic swing cylinder.

[0022] 3. The signals of proximity sensor 1, proximity sensor 2, and proximity sensor 3 of the present invention are 0 0 1 when the telescopic link is downward and not rotated, 0 1 0 when the telescopic link is downward and rotated 90 degrees, 1 0 1 when the telescopic link is upward and not rotated, and 1 1 0 when the telescopic link is upward and rotated 90 degrees. This allows the operating status of the telescopic link to be accurately identified by the gain or loss of signals from the three proximity sensors, achieving low cost while ensuring reliability. At all times, one proximity sensor of the present invention generates a signal, indicating that the telescopic link is within the telescopic sheath. When all three sensors lose a signal, it is determined that the telescopic link has fallen out of the sheath, triggering an alarm and prompting maintenance.

[0023] Fourth, the bottom connecting end of the telescopic connecting rod of the present invention is used to connect other parts; the telescopic sheath only needs to open three threaded holes to realize the installation of three proximity sensors, which has low operating cost and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall schematic diagram of the present invention.

[0025] Figure 2 It is a schematic diagram of the telescopic connecting rod of the present invention.

[0026] Figure 3 Schematic diagram of the telescopic sheath of the present invention.

[0027] Figure 4 It is a schematic diagram of the interior of the telescopic sheath of the present invention.

[0028] Among them: 1-telescopic sheath, 2-telescopic connecting rod, 3-proximity sensor 1, 4-proximity sensor 2, 5-proximity sensor 3, 6-waist-shaped notch, 7-circular notch, 8-threaded hole, 9-square part, 10-cylindrical part, 11-circular mouth, 12-cylindrical hole, 13-square slot, 14-connecting end. DETAILED DESCRIPTION

[0029] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the examples. The examples are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0030] like Figure 1-4 As shown, this embodiment provides a sheath connecting rod mechanism capable of detecting the state of a telescopic swing cylinder, comprising a telescopic sheath 1 and a telescopic connecting rod 2. The telescopic sheath 1 is provided with a proximity sensor 1 3, a proximity sensor 2 4, and a proximity sensor 3 5. The proximity sensor 2 4 and the proximity sensor 3 5 are located at the bottom of the telescopic sheath 1 and arranged horizontally at 90 degrees. The proximity sensor 1 3 is located at the top of the telescopic sheath 1 on the side of the proximity sensor 2 4 away from the proximity sensor 3 5. The outer wall of the telescopic connecting rod 2 has a waist-shaped notch 6 and a circular notch 7 arranged vertically.

[0031] The three proximity sensors have a detection distance of 2mm. The distance between the inner detection parts of the three proximity sensors and the telescopic link 2 is less than 2mm, and the distance between the inner detection parts of the three proximity sensors and the inner ends of the waist-shaped notch 6 and the circular notch 7 is greater than 2mm. The telescopic link 2 is sensed by three proximity sensors installed on the telescopic cover 1. The three proximity sensors are positioned differently: two are horizontally arranged at 90° at the bottom, and the other is offset at the top. The telescopic link 2 cooperates with the operation of the three proximity sensors through the waist-shaped notch 6 and the circular notch 7 arranged at the top and bottom. The detection distance of the proximity sensors is 2mm. This allows the detection signals from the proximity sensors to determine whether the relative position of the telescopic link 2 and the telescopic cover 1 is rotated or extended.

[0032] The telescopic link 2 can only rotate when its top end is located within the top end of the telescopic sheath 1. The top end of the telescopic link 2 is a square portion 9, and the main body is a cylindrical portion 10. The inner top end of the telescopic sheath 1 is a circular opening 11, and the main body is a cylindrical hole 12. The cylindrical hole 12 is also provided with a square slot 13 to accommodate the limited passage of the square portion 9. The diameter of the circular opening 11 is greater than the diagonal length of the square slot 13. The telescopic link 2 can only rotate when the square portion 9 is located within the circular opening 11 and the cylindrical portion 10 is located within the cylindrical hole 12. Since the telescopic link 2 needs to be extended and retracted, it can only rotate 90 degrees before it can be rotated and retracted. In this way, the square portion 9 of the telescopic link 2 can only be rotated when it is located in the circular opening 11 in the telescopic sheath 1. Moreover, due to the matching limit of the square groove 13 and the square portion 9, the telescopic link 2 can only be rotated 90° before the telescopic operation is performed. The rotation operation cannot be performed in other cases, which can ensure the safety of the telescopic swing cylinder.

[0033] The bottom of the telescopic connecting rod is a connecting end 14 for connecting other parts; the telescopic sheath 1 only needs to have three threaded holes 8 to realize the installation of three proximity sensors, which has low operating cost and is easy to use.

[0034] This embodiment also provides a detection method. Initially, the proximity sensor 2 4, the waist-shaped notch 6, and the circular notch 7 are on a straight line in the same direction as the telescopic link 2. The gain or loss of the three proximity sensor signals are represented by 1 and 0, where 0 represents no signal and 1 represents a signal:

[0035] When the signals of proximity sensor 1 3, proximity sensor 2 4 and proximity sensor 3 5 are 0 0 1 respectively, when the telescopic link 2 is at the bottom and not rotating, proximity sensor 1 3 cannot sense the telescopic link 2, proximity sensor 2 4 is located at the waist-shaped notch 6, and proximity sensor 3 5 senses the top of the telescopic link 2.

[0036] When the signals of proximity sensor 1 3, proximity sensor 2 4, and proximity sensor 3 5 are 0 1 0 respectively, the square portion 9 of the telescopic link 2 is first located in the circular opening 11 of the telescopic cover 1 and rotates 90 degrees toward the proximity sensor 3 5. Then, the telescopic link 2 extends downward and is located at the bottom. At this time, proximity sensor 1 3 cannot sense the telescopic link 2, proximity sensor 3 5 is located at the waist-shaped notch 6, and proximity sensor 2 4 senses the top of the telescopic link 2.

[0037] When the signals of proximity sensor 1 3, proximity sensor 2 4 and proximity sensor 3 5 are 1 0 1 respectively, the telescopic link 2 is at the top and does not rotate. At this time, proximity sensor 1 3 senses the top end of the telescopic link 2, proximity sensor 2 4 is located at the circular notch 7, and proximity sensor 3 5 senses the bottom end of the telescopic link 2.

[0038] When the signals of proximity sensor 1 3, proximity sensor 2 4, and proximity sensor 3 5 are 1 1 0 respectively, the square portion 9 of the telescopic link 2 is first located in the circular opening 11 of the telescopic cover 1 and rotates 90 degrees toward the direction of proximity sensor 3 5; at this time, proximity sensor 1 3 senses the top end of the telescopic link 2, proximity sensor 3 5 is located at the circular notch 7, and proximity sensor 2 4 senses the bottom end of the telescopic link 2.

[0039] In this way, the operating status of the telescopic link 2 can be accurately identified by the gain or loss of signals from the three proximity sensors, achieving low cost while ensuring reliability. In this embodiment, at any time, one proximity sensor has a signal, indicating that the telescopic link 2 is within the telescopic sheath 1. When all three sensors have no signal, it is determined that the telescopic link 2 has fallen out of the telescopic sheath 1, and the device alarm is triggered, prompting personnel to conduct maintenance.

Claims

1. A sheath connecting rod mechanism capable of detecting the state of a telescopic swing cylinder, comprising a telescopic sheath (1) and a telescopic connecting rod (2), characterized in that: The telescopic sheath (1) is provided with a proximity sensor 1 (3), a proximity sensor 2 (4) and a proximity sensor 3 (5), the proximity sensor 2 (4) and the proximity sensor 3 (5) are located at the bottom of the telescopic sheath (1) and are arranged horizontally at 90 degrees, and the proximity sensor 1 (3) is located at the top of the telescopic sheath (1) on the side of the proximity sensor 2 (4) away from the proximity sensor 3 (5); The outer wall of the telescopic connecting rod (2) has waist-shaped notches (6) and circular notches (7) arranged above and below; The detection distance of the three proximity sensors is 2 mm, the distance between the inner end detection parts of the three proximity sensors and the telescopic connecting rod (2) is less than 2 mm, and the distance between the inner end detection parts of the three proximity sensors and the inner ends of the waist-shaped notch (6) and the circular notch (7) is greater than 2 mm; The telescopic connecting rod (2) can only rotate when the top end is located at the top end inside the telescopic sheath (1).

2. The sheath connecting rod mechanism capable of detecting the state of the telescopic swing cylinder as claimed in claim 1, characterized in that: The top end of the telescopic connecting rod (2) is a square portion (9), and the main body is a cylindrical portion (10); the inner top end of the telescopic sheath (1) is a circular opening (11), and the main body is a cylindrical hole (12). The cylindrical hole (12) is further provided with a square groove (13) for fitting the limited passage of the square portion (9). The diameter of the circular opening (11) is greater than the diagonal length of the square groove (13).

3. The sheath connecting rod mechanism capable of detecting the state of the telescopic swing cylinder as claimed in claim 2, characterized in that: When the square portion (9) is located in the circular opening (11), the cylindrical portion (10) is located in the cylindrical hole (12). At this time, the telescopic connecting rod (2) can be rotated. Since the telescopic connecting rod (2) needs to be telescopic, the telescopic connecting rod (2) can only be rotated 90 degrees before it can be extended and retracted.

4. The sheath connecting rod mechanism capable of detecting the state of the telescopic swing cylinder as claimed in claim 2, characterized in that: The bottom of the telescopic connecting rod is a connecting end (14); three threaded holes (8) are provided on the circumference of the telescopic sheath, and the threaded holes (8) are used to install proximity sensors.

5. The sheath connecting rod mechanism capable of detecting the state of the telescopic swing cylinder as claimed in claim 1, characterized in that: Initially, the proximity sensor 2 (4), the waist-shaped notch (6) and the circular notch (7) are on a straight line in the same direction as the telescopic link (2), and the up and down position and rotation of the telescopic link (2) are determined by the gain or loss of the three proximity sensor signals.

6. The sheath connecting rod mechanism capable of detecting the state of the telescopic swing cylinder as claimed in claim 5, characterized in that: The gain or loss of the three proximity sensor signals is represented by 1 and 0, where 0 represents no signal and 1 represents a signal: When the telescopic link (2) is at the bottom and not rotating, the signals of proximity sensor 1 (3), proximity sensor 2 (4) and proximity sensor 3 (5) are 0 0 1 respectively; When the telescopic link (2) is at the bottom and rotated 90 degrees toward the direction of proximity sensor 3 (5), the signals of proximity sensor 1 (3), proximity sensor 2 (4) and proximity sensor 3 (5) are 0 1 0 respectively; When the telescopic link (2) is at the top and not rotating, the signals of proximity sensor 1 (3), proximity sensor 2 (4) and proximity sensor 3 (5) are 1 0 1 respectively; When the telescopic link (2) is at the top and rotated 90 degrees in the direction of proximity sensor three (5), the signals of proximity sensor one (3), proximity sensor two (4) and proximity sensor three (5) are 1 1 0 respectively.

7. The sheath connecting rod mechanism capable of detecting the state of the telescopic swing cylinder as claimed in claim 5, characterized in that: When the telescopic link (2) is at the bottom and not rotating, the proximity sensor 1 (3) cannot sense the telescopic link (2), the proximity sensor 2 (4) is located at the waist-shaped notch (6), and the proximity sensor 3 (5) senses the top of the telescopic link (2); When the telescopic link (2) is at the bottom and rotated 90 degrees in the direction of proximity sensor three (5), proximity sensor one (3) cannot sense the telescopic link (2), proximity sensor three (5) is located at the waist-shaped notch (6), and proximity sensor two (4) senses the top of the telescopic link (2).

8. The sheath connecting rod mechanism capable of detecting the state of the telescopic swing cylinder as claimed in claim 5, characterized in that: When the telescopic link (2) is at the top and not rotating, proximity sensor 1 (3) senses the top of the telescopic link (2), proximity sensor 2 (4) is located at the circular notch (7), and proximity sensor 3 (5) senses the bottom of the telescopic link (2); When the telescopic link (2) is at the top and rotated 90 degrees in the direction of proximity sensor three (5), proximity sensor one (3) senses the top of the telescopic link (2), proximity sensor three (5) is located at the circular notch (7), and proximity sensor two (4) senses the bottom of the telescopic link (2).

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