Quick detection device for out-of-roundness of cable protection pipe

Abstract

The utility model provides a device for quickly detecting the out-of-roundness of a cable protection pipe, which relates to the technical field of quick detection of the out-of-roundness of the cable protection pipe and comprises a central positioning mechanism and an internal detection mechanism movably connected with the central positioning mechanism. The rotating central axis of the inner detection mechanism coincides with the central axis of the central positioning mechanism, the outer detection mechanism is in sliding connection with the inner detection mechanism and can rotate along with the inner detection mechanism, and the rotating central axis of the outer detection mechanism coincides with the central axis of the central positioning mechanism. According to the device, the central positioning mechanism can be rapidly installed, the inner diameter and the outer diameter of the cable protection pipe are detected through the laser displacement sensors on the inner detection mechanism and the outer detection mechanism, data are transmitted to the detection system, the out-of-roundness of the pipe fitting is automatically calculated, and the detection accuracy is improved. Operation is simple, repeated detection is facilitated, carrying is convenient, and the using effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of cable protection tube out-of-roundness quick detection, in particular to a cable protection tube out-of-roundness quick detection device. Background Art

[0002] Out-of-roundness refers to the difference between the maximum and minimum measured values ​​of the outer diameter (or inner diameter) on the same circular cross-section of the pipeline component. The out-of-roundness of the cable protection tube needs to comply with the corresponding product standards. The existing out-of-roundness quick detection device is relatively complicated to operate, has poor stability, and is not convenient to use. Utility Model Content

[0003] The utility model aims to provide a device for quickly detecting the out-of-roundness of a cable protection tube, aiming to solve the problems mentioned in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: the cable protection tube out-of-roundness quick detection device includes a center positioning mechanism, which is used to determine the center axis of the cable protection tube, and also includes an internal inspection mechanism, which is movably connected to the center positioning mechanism, and the rotation center axis of the internal inspection mechanism coincides with the center axis of the center positioning mechanism, and also includes an external inspection mechanism, which is slidably connected to the internal inspection mechanism, and the external inspection mechanism can rotate with the internal inspection mechanism, and the rotation center axis of the external inspection mechanism coincides with the center axis of the center positioning mechanism, and both the external inspection mechanism and the internal inspection mechanism are provided with laser displacement sensors.

[0005] Preferably, the center positioning mechanism includes two end plates, a fixed rod is arranged between the two end plates, a bidirectional screw is also arranged between the two end plates, two movable plates are slidably connected between the two end plates, both movable plates are threadedly connected with the bidirectional screw, connecting rods are hinged on the outer surfaces of the end plates, and top rods are hinged on the outer surfaces of the movable plates, the connecting rods on the end plates are hinged to the top rods on the adjacent movable plates, and a rotatable support plate is arranged at the end of the top rod, and the side of the support plate has an arc surface.

[0006] Preferably, the center positioning mechanism includes two end plates, a fixed rod is arranged between the two end plates, a bidirectional screw is also arranged between the two end plates, two movable plates are slidably connected between the two end plates, both movable plates are threadedly connected with the bidirectional screw, connecting rods are hinged on the outer surfaces of the end plates, and a top rod is hinged on the outer surfaces of the movable plates, the connecting rods on the end plates are hinged to the top rods on the adjacent movable plates, and a rotatable wheel is arranged at the ends of the top rods.

[0007] Preferably, the internal inspection mechanism includes a sleeve, which can be sleeved on the outer surface of the end of the bidirectional screw and rotatably connected to the bidirectional screw. A mounting seat is provided on one side of the sleeve, and a mounting groove for mounting a laser displacement sensor is provided on the mounting seat.

[0008] Preferably, the external inspection mechanism includes a fixed plate arranged on one side of the mounting seat, the interior of the fixed plate is symmetrically provided with sliding holes, and also includes a top platform, the lower end of the top platform is symmetrically provided with round rods slidably connected to the fixed plate, positioning holes are spaced apart on the round rods, and also includes positioning bolts threadedly connected to the fixed plate, an extension seat is arranged on one side of the top platform, a card slot is arranged on the extension seat, and the laser displacement sensor is arranged inside the card slot.

[0009] Preferably, a handle is provided on one side of the fixing plate.

[0010] Preferably, a stopper is provided at the bottom end of the round rod.

[0011] Preferably, the upper surface of the mounting seat is provided with a sliding rod slidably connected to the top platform.

[0012] The beneficial effects of the utility model are:

[0013] The device can quickly realize the installation of the center positioning mechanism, and detect the inner diameter and outer diameter of the cable protection tube through the laser displacement sensors on the internal inspection mechanism and the external inspection mechanism, and transmit the data to the detection system to automatically calculate the out-of-roundness of the pipe. The operation is simple, multiple inspections are convenient, the stability of the inspection is improved, the portability is convenient, and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model.

[0015] Figure 2 It is a structural schematic diagram of a specific embodiment of the utility model without the cable protection tube.

[0016] Figure 3 It is a structural schematic diagram of a rotating wheel and a push rod in a specific embodiment of the utility model.

[0017] Figure 4 yes Figure 2 Main view in state.

[0018] Figure 5 It is a structural schematic diagram of the center positioning mechanism in a specific embodiment of the utility model.

[0019] Figure 6 It is a structural schematic diagram of the internal inspection mechanism and the external inspection mechanism of a specific embodiment of the utility model.

[0020] Figure 7 It is a structural schematic diagram of a round rod in a specific embodiment of the utility model.

[0021] In the figure: 1. Cable protection tube; 2. Laser displacement sensor; 3. End plate; 4. Fixed rod; 5. Bidirectional screw; 6. Moving plate; 7. Connecting rod; 8. Push rod; 9. Support plate; 10. Rotating wheel; 11. Sleeve; 12. Mounting seat; 13. Fixed plate; 14. Top platform; 15. Round rod; 16. Positioning hole; 17. Positioning bolt; 18. Extension seat; 19. Handle; 20. Block; 21. Sliding rod. DETAILED DESCRIPTION

[0022] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0023] like Figure 1-7 As shown, a device for quickly detecting the out-of-roundness of a cable protection tube includes a center positioning mechanism, which is used to determine the center axis of the cable protection tube 1, and also includes an internal inspection mechanism, which is movably connected to the center positioning mechanism, and the rotation center axis of the internal inspection mechanism coincides with the center axis of the center positioning mechanism, and also includes an external inspection mechanism, which is slidably connected to the internal inspection mechanism, the external inspection mechanism can rotate with the internal inspection mechanism, and the rotation center axis of the external inspection mechanism coincides with the center axis of the center positioning mechanism, and laser displacement sensors 2 are provided on both the external inspection mechanism and the internal inspection mechanism.

[0024] When the center positioning mechanism is placed inside the cable protection tube 1, after the center positioning mechanism is fixed inside the cable protection tube 1, the center axis of the cable protection tube 1 can be found, and the internal inspection mechanism can rotate on the center positioning mechanism. When the internal inspection mechanism rotates on the center positioning mechanism, the distance between the laser displacement sensor 2 and the cable protection tube 1 can be measured by the laser displacement sensor 2. When the laser displacement sensor 2 is in use, firstly, eight points are selected on the cable protection tube 1 at intervals of 45°, and then the laser displacement sensor 2 is rotated to these eight points in turn. At each point, the laser displacement sensor 2 measures the distance between the laser displacement sensor 2 and the inner wall of the cable protection tube 1 at the point. Then, the points selected by the external inspection mechanism and the internal inspection mechanism are the same. The laser displacement sensor 2 on the external inspection mechanism can measure the distance between the laser displacement sensor 2 and the outer wall of the cable protection tube 1, and the laser displacement sensor 2 on the internal inspection mechanism and the vertical distance between the laser displacement sensor 2 on the external inspection mechanism and the rotation center axis of the internal inspection mechanism are all known values. The detected values ​​are transmitted to the detection system, so that the out-of-roundness of the cable protection tube 1 can be calculated.

[0025] Furthermore, the center positioning mechanism includes two end plates 3, a fixed rod 4 is arranged between the two end plates 3, a bidirectional screw rod 5 is also arranged between the two end plates 3, two movable plates 6 are slidably connected between the two end plates 3, and the two movable plates 6 are both threadedly connected to the bidirectional screw rod 5. The outer surface of the end plate 3 is hinged with a connecting rod 7, and the outer surface of the movable plate 6 is hinged with a push rod 8. The connecting rod 7 on the end plate 3 is hinged with the push rod 8 on the adjacent movable plate 6. The end of the push rod 8 is provided with a rotatable support plate 9, and the side of the support plate 9 has an arc surface. When installing the center positioning mechanism, first lift the pipe fitting to be tested to more than 200 mm above the ground to In order not to affect the rotation of the internal inspection mechanism and the external inspection mechanism, the center positioning mechanism is then placed as a whole into the pipe to be tested, and the minimum distance between the center positioning mechanism and the port is not less than 25 mm. The bidirectional screw 5 is then rotated to make the two movable plates 6 move in opposite directions. Through the cooperation of the connecting rod 7 and the push rod 8, the end of the push rod 8 moves toward the side wall of the pipe and contacts the inner wall of the pipe through the support plate 9, thereby completing the fixation of the center positioning mechanism. The arc surface on the side of the support plate 9 can increase the contact area with the inner wall of the pipe, increase the friction, and improve the stability of the center positioning mechanism in the key area.

[0026] Furthermore, the center positioning mechanism includes two end plates 3, a fixed rod 4 is arranged between the two end plates 3, a bidirectional screw rod 5 is also arranged between the two end plates 3, two movable plates 6 are slidably connected between the two end plates 3, and the two movable plates 6 are threadedly connected to the bidirectional screw rod 5. The outer surface of the end plate 3 is hinged with a connecting rod 7, and the outer surface of the movable plate 6 is hinged with a top rod 8. The connecting rod 7 on the end plate 3 is hinged to the top rod 8 on the adjacent movable plate 6, and a rotatable wheel 10 is arranged at the end of the top rod 8. When the center positioning mechanism is not installed in the pipe fitting, the support plate 9 is prone to rotation. When the pipe fitting is installed, the angle of the support plate 9 needs to be adjusted. The rotating wheel 10 does not need to adjust the support plate 9, thereby improving the installation efficiency of the center positioning mechanism.

[0027] Furthermore, the internal inspection mechanism includes a sleeve 11, which can be sleeved on the outer surface of the end of the bidirectional screw rod 5 and rotatably connected to the bidirectional screw rod 5. A mounting seat 12 is provided on one side of the sleeve 11, and a mounting groove for installing the laser displacement sensor 2 is opened on the mounting seat 12. The sleeve 11 can be sleeved on one end of the bidirectional screw rod 5, and the laser displacement sensor 2 on the mounting seat 12 is all located inside the pipe fitting, and the sleeve 11 and the mounting seat 12 are not in contact with the pipe fitting.

[0028] Furthermore, the external inspection mechanism includes a fixed plate 13 arranged on one side of the mounting seat 12, and the interior of the fixed plate 13 is symmetrically provided with sliding holes, and also includes a top platform 14, and the lower end of the top platform 14 is symmetrically provided with a round rod 15 slidably connected to the fixed plate 13, and the round rod 15 is provided with positioning holes 16 at intervals, and also includes a positioning bolt 17 threadedly connected to the fixed plate 13, and an extension seat 18 is arranged on one side of the top platform 14, and the extension seat 18 is provided with a slot, and the laser displacement sensor 2 is arranged inside the slot, for pipes of different diameters, the relative position of the round rod 15 and the fixed plate 13 can be adjusted, and after the adjustment of the round rod 15 is completed, the round rod 15 and the fixed plate 13 can be fixed by the cooperation of the positioning bolt 17 and the positioning hole 16 on the round rod 15, so as to facilitate the laser displacement sensor 2 to measure the outer diameter of the pipe.

[0029] Furthermore, a handle 19 is provided on one side of the fixing plate 13 , and the handle 19 is used to facilitate carrying the fixing plate 13 .

[0030] Furthermore, a stopper 20 is provided at the bottom end of the round rod 15 , and the stopper 20 can prevent the round rod 15 from being completely separated from the fixing plate 13 , thereby improving the safety and convenience of use.

[0031] Furthermore, a slide bar 21 slidably connected to the top platform 14 is provided on the upper surface of the mounting seat 12 , and the slide bar 21 is used to improve the stability of the laser displacement sensor 2 on the extension seat 18 to prevent it from shaking.

[0032] The device can quickly realize the installation of the center positioning mechanism, and detect the inner diameter and outer diameter of the cable protection tube 1 through the laser displacement sensor 2 on the internal inspection mechanism and the external inspection mechanism, and transmit the data to the detection system to automatically calculate the out-of-roundness of the pipe. The operation is simple, multiple inspections are convenient, the stability of the inspection is improved, the portability is convenient, and the use effect is good.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A quick detection device for out-of-roundness of a cable protection tube, characterized in that: It comprises a center positioning mechanism, which is used to determine the center axis of the cable protection tube (1); an internal inspection mechanism, which is movably connected to the center positioning mechanism, and the rotation center axis of the internal inspection mechanism coincides with the center axis of the center positioning mechanism; and an external inspection mechanism, which is slidably connected to the internal inspection mechanism, and the external inspection mechanism can rotate with the internal inspection mechanism, and the rotation center axis of the external inspection mechanism coincides with the center axis of the center positioning mechanism. Both the external inspection mechanism and the internal inspection mechanism are provided with laser displacement sensors (2).

2. The cable protection tube out-of-roundness quick detection device according to claim 1 is characterized in that: The center positioning mechanism comprises two end plates (3), a fixed rod (4) is arranged between the two end plates (3), a bidirectional screw rod (5) is also arranged between the two end plates (3), two movable plates (6) are slidably connected between the two end plates (3), the two movable plates (6) are both threadedly connected to the bidirectional screw rod (5), a connecting rod (7) is hinged on the outer surface of the end plate (3), a top rod (8) is hinged on the outer surface of the movable plate (6), the connecting rod (7) on the end plate (3) is hinged to the top rod (8) on the adjacent movable plate (6), and a rotatable support plate (9) is arranged at the end of the top rod (8), and the side of the support plate (9) has an arc surface.

3. The cable protection tube out-of-roundness quick detection device according to claim 1 is characterized in that: The center positioning mechanism comprises two end plates (3), a fixed rod (4) is arranged between the two end plates (3), a bidirectional screw rod (5) is also arranged between the two end plates (3), two movable plates (6) are slidably connected between the two end plates (3), the two movable plates (6) are both threadedly connected to the bidirectional screw rod (5), a connecting rod (7) is hinged on the outer surface of the end plate (3), a push rod (8) is hinged on the outer surface of the movable plate (6), the connecting rod (7) on the end plate (3) is hinged to the push rod (8) on the adjacent movable plate (6), and a rotatable wheel (10) is arranged at the end of the push rod (8).

4. The cable protection tube out-of-roundness quick detection device according to any one of claims 2-3, characterized in that: The internal inspection mechanism comprises a sleeve (11), which can be sleeved on the outer surface of the end of the bidirectional screw rod (5) and is rotatably connected to the bidirectional screw rod (5), and a mounting seat (12) is provided on one side of the sleeve (11), and a mounting groove for mounting a laser displacement sensor (2) is provided on the mounting seat (12).

5. The cable protection tube out-of-roundness quick detection device according to claim 4 is characterized in that: The external inspection mechanism comprises a fixing plate (13) arranged on one side of a mounting seat (12), wherein sliding holes are symmetrically provided inside the fixing plate (13), and further comprises a top platform (14), wherein round rods (15) slidably connected to the fixing plate (13) are symmetrically provided at the lower end of the top platform (14), wherein positioning holes (16) are spaced apart on the round rods (15), and further comprises positioning bolts (17) threadedly connected to the fixing plate (13), wherein an extension seat (18) is arranged on one side of the top platform (14), wherein a card slot is arranged on the extension seat (18), and the laser displacement sensor (2) is arranged inside the card slot.

6. The cable protection tube out-of-roundness quick detection device according to claim 5 is characterized in that: A handle (19) is provided on one side of the fixing plate (13).

7. The cable protection tube out-of-roundness quick detection device according to claim 5 is characterized in that: A stopper (20) is provided at the bottom end of the round rod (15).

8. The cable protection tube out-of-roundness quick detection device according to claim 5 is characterized in that: The upper surface of the mounting seat (12) is provided with a sliding rod (21) which is slidably connected to the top platform (14).

Images