Signal cable termination visual inspection device

Abstract

The utility model discloses a signal cable termination visual inspection device. The device comprises a telescopic rod; the mirror seat is connected with the telescopic rod through an angle adjusting mechanism, and a mirror surface is arranged on one surface of the mirror seat; the angle adjusting mechanism comprises a mounting rack fixed on the mirror base; a first shaft hole and a second shaft hole are formed in the two ends of the shaft seat respectively, the first shaft hole is perpendicular to the axial direction of the telescopic rod, and the second shaft hole is parallel to the axial direction of the telescopic rod; one end of the shaft seat is hinged to the far end of the telescopic rod through a first pin shaft penetrating through the first shaft hole, and the other end of the shaft seat is hinged to the mounting frame through a second pin shaft penetrating through the second shaft hole. According to the invention, the convenience of detection operation is improved, the termination condition of the signal cable can be conveniently observed from a proper angle in the limited space of the cabinet, the signal cable under abnormal conditions such as misconnection, virtual connection, exposure and loosening can be timely found, the problems of wrong detection and missing detection are avoided, and the safe operation of a nuclear power unit is ensured.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power plant safety technology, and in particular to a visual inspection device for signal cable termination. Background Technology

[0002] In nuclear power unit safety-grade DCS systems, the internal wiring of signal cable terminal blocks is often obstructed by components such as the terminal block itself. Furthermore, the limited space within the cabinet makes it impossible to directly observe the accuracy of the termination of signal cable terminal blocks within the safety-grade DCS cabinet. If signal cables with abnormalities such as incorrect connections, loose connections, exposed wires, or loose connections are not accurately detected during system termination, these abnormally terminated signal cables will cause signal instability during subsequent unit operation. This can lead to erroneous triggering of downstream equipment, significantly reducing the stability of nuclear power unit operation and seriously affecting the safety of the nuclear power plant.

[0003] Due to the lack of professional inspection equipment, the signal cable termination in the security-grade DCS cabinet is usually inspected by visual inspection and taking photos with a mobile phone. However, the cabinet is small, has many obstructions, and has dense wiring, making observation difficult and creating blind spots. This can easily lead to false detections and missed detections, posing a great safety hazard. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a visual inspection device for signal cable terminations. This device solves the technical issues of inconvenient inspection of signal cable terminations within safety-grade DCS cabinets in nuclear power plants, which easily leads to misdiagnosis and missed detection. This application significantly improves the convenience of inspection operations, allowing for observation of signal cable terminations from an appropriate angle within the confined space of the cabinet. It facilitates the timely detection of abnormalities such as misconnections, loose connections, exposed cables, and loose connections, avoiding misdiagnosis and missed detection, and ensuring the safe operation of nuclear power units.

[0005] This application provides a visual inspection device for signal cable terminations. The device includes: a telescopic rod; a mirror base connected to the telescopic rod via an angle adjustment mechanism, wherein the side of the mirror base facing away from the angle adjustment mechanism has a mirror surface; the angle adjustment mechanism includes: a mounting bracket fixed to the mirror base; and a shaft seat with a first shaft hole and a second shaft hole at both ends, the first shaft hole being perpendicular to the axial direction of the telescopic rod and the second shaft hole being parallel to the axial direction of the telescopic rod; wherein one end of the shaft seat is hinged to the distal end of the telescopic rod via a first pin passing through the first shaft hole, and the other end of the shaft seat is hinged to the mounting bracket via a second pin passing through the second shaft hole.

[0006] In some embodiments, the mirror surface includes a concave mirror.

[0007] In some embodiments, the mirror base is further provided with a light source, which is arranged around the outer periphery of the mirror surface.

[0008] In some embodiments, the device further includes: a power supply disposed on the telescopic rod or the mirror mount and electrically connected to the light source; and a control component disposed at the proximal end of the telescopic rod and electrically connected to the power supply and the light source, for controlling the opening and closing of the light source.

[0009] In some embodiments, the first pin and / or the second pin are arbitrary stop-damping shafts.

[0010] In some embodiments, the telescopic rod includes a grip section and at least one telescopic section connected to the grip section and axially movable relative to the grip section, the mirror mount being connected to the corresponding telescopic section extending to its farthest end via the angle adjustment mechanism.

[0011] In some embodiments, the angle adjustment mechanism further includes: a movable member that reciprocates axially relative to the telescopic rod; a push rod including a first end and a second end, the first end being hinged to the movable member and the second end being hinged to the bearing seat via the first pin; and a universal connector disposed closer to the proximal end of the telescopic rod than the movable member, one end of the universal connector being connected to the telescopic rod and the other end being connected to the mirror base.

[0012] In some embodiments, the angle adjustment mechanism further includes a drive member connected to the movable member for driving the movable member to reciprocate axially relative to the telescopic rod.

[0013] In some embodiments, the driving component includes: a driving screw rotatably connected to the distal end of the telescopic rod in an axial direction; a movable member threadedly connected to the driving screw, and the movable member slidingly connected to the telescopic rod in an axial direction; and a servo motor fixed to the telescopic rod, the power output shaft of the servo motor being connected to the driving screw for driving the driving screw to rotate.

[0014] In some embodiments, the drive component includes: a linear motor fixedly connected to the telescopic rod along an axial direction; a movable component fixedly connected to the power output shaft of the linear motor, and the movable component slidingly connected to the telescopic rod along an axial direction.

[0015] The signal cable termination visualization inspection device provided in this application has a mirror mount connected to a telescopic rod via an angle adjustment mechanism. The mirror mount has a mirror surface, and the distance the mirror surface extends into the nuclear power plant's safety-grade DCS system cabinet can be controlled by extending and retracting the telescopic rod. This allows for quality inspection of signal cable terminations inside the cabinet terminal blocks at different depths using mirror reflection imaging, greatly improving the convenience of the inspection operation. Furthermore, in the angle adjustment mechanism of the signal cable termination visualization inspection device provided in this application, one end of the shaft seat is hinged to the far end of the telescopic rod via a first pin, and the other end of the shaft seat is hinged to the mounting bracket via a second pin.

[0016] In use, the mirror base can be adjusted, and the mounting bracket can drive the shaft base to rotate relative to the telescopic rod around the first pin, thereby adjusting the axial deflection angle of the mirror relative to the telescopic rod. Alternatively, the mirror base can be adjusted, and the mounting bracket can rotate relative to the shaft base around the second pin, thereby adjusting the radial deflection angle of the mirror relative to the telescopic rod. This allows for multi-directional and multi-angle adjustment of the mirror relative to the telescopic rod, facilitating observation of signal cable terminations from appropriate angles within the confined space of the cabinet. This helps to promptly detect abnormalities such as incorrect connections, loose connections, exposed cables, and loose cables, avoiding misdetection and missed detection, and ensuring the safe operation of the nuclear power unit. Attached Figure Description

[0017] The technical solution of this application will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the main structure of Embodiment 1 of the device of this application;

[0019] Figure 2 This is a cross-sectional view of the device embodiment 1 of this application along the Z-axis and X-axis.

[0020] Figure 3 yes Figure 2 A magnified schematic diagram of the local structure at point S1;

[0021] Figure 4 This is a partial structural diagram of the device in Embodiment 2 of this application. Figure 1 In the diagram, the mirror surface has the largest axial deflection angle relative to the telescopic rod.

[0022] Figure 5 This is a partial structural diagram of the device in Embodiment 2 of this application. Figure 2 In the diagram, the mirror surface has the smallest axial deflection angle compared to the telescopic rod.

[0023] The attached figures are labeled as follows:

[0024] 1-Telescopic rod, 10-Wire hole, 11-Holding section, 111-Grip, 12-Telescopic section, 121-First mounting arm, 13-Connecting section, 131-Guide groove, 132-Connecting part, 2-Angle adjustment mechanism, 21-Mounting bracket, 211-Second mounting arm, 212-Fixed end, 213-Second mounting hole, 22-Shaft seat, 221-First shaft hole, 222-Second shaft hole, 23-First pin, 24-Second pin, 25-Moving part, 251-Fourth mounting arm, 26-Push rod, 261-Third shaft hole, 262-Third mounting arm, 27-Universal connector, 28-Third pin, 29-Driver, 291-Drive screw, 292-Servo motor, 3-Mirror base, 4-Mirror surface, 5-Light source, 6-Power supply, 7-Control component, 71-Control button, 8-Battery box. Detailed Implementation

[0025] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the technical solutions of this utility model will be further described in detail below through specific embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0026] Please see Figure 1 and Figure 2 This application provides a visual inspection device for signal cable terminations, the device including a telescopic rod 1 and an angle adjustment mechanism 2 (e.g., Figure 2 As shown in the diagram, the mirror base 3 and the telescopic rod 1 can be adjusted by telescopic means to change the extension length of its distal end relative to its proximal end. The telescopic rod 1 can be a two-section telescopic structure, a three-section telescopic structure, or a telescopic structure with more than three sections. This application does not limit this, as long as it can achieve the adjustment of the extension length of the distal end of the telescopic rod 1 relative to its proximal end and meet the usage requirements of the extension length. Preferably, the telescopic rod 1 can be a telescopic rod 1 with a self-locking function to lock the extension length.

[0027] The mirror base 3 is connected to the distal end of the telescopic rod 1 via the angle adjustment mechanism 2. The side of the mirror base 3 facing away from the angle adjustment mechanism 2 has a mirror surface 4. The mirror base 3 can be circular, elliptical, polygonal, or irregularly shaped, and can be made of materials such as plastic, iron, stainless steel, or copper. This application does not limit its use, as long as the mirror base 3 has sufficient strength to support and fix the mirror surface 4 and the angle adjustment mechanism 2. The mirror surface 4 can be a plane mirror or a curved mirror. It can be made of inorganic glass or organic glass materials such as acrylic. This application does not limit its use, as long as it meets the actual usage requirements.

[0028] Please see Figure 2 and Figure 3The angle adjustment mechanism 2 includes a mounting bracket 21, a bearing seat 22, a first pin 23, and a second pin 24. The mounting bracket 21 is fixed to the side of the mirror base 3 facing away from the mirror surface 4. The bearing seat 22 has a first shaft hole 221 and a second shaft hole 222 at both ends. The first shaft hole 221 is perpendicular to the axial direction of the telescopic rod 1, and the second shaft hole 222 is parallel to the axial direction of the telescopic rod 1. One end of the bearing seat 22 is hinged to the distal end of the telescopic rod 1 via the first pin 23 passing through the first shaft hole 221, and the other end of the bearing seat 22 is hinged to the mounting bracket 21 via the second pin 24 passing through the second shaft hole 222.

[0029] To facilitate understanding of the technical solution of this application, the axial direction of the telescopic rod 1 is defined as the Z-axis, the axial direction of the first shaft hole 221 is defined as the Y-axis, and the Y-axis is perpendicular to the Z-axis; the axial direction of the second shaft hole 222 is the Z-axis. Furthermore, in this application, "proximal end" refers to the end of the telescopic rod 1 that is close to the inspector's hand during use, and "distal end" refers to the end of the telescopic rod 1 that is far from the inspector's hand during use.

[0030] The signal cable termination visualization inspection device provided in this application has a mirror base 3 connected to a telescopic rod 1 via an angle adjustment mechanism 2. The mirror base 3 is equipped with a mirror surface 4, which allows the mirror surface 4 to extend into the nuclear power plant safety-grade DCS system cabinet by extending and retracting the telescopic rod 1. This enables the use of the mirror surface 4 to reflect images and perform quality inspections of the signal cable terminations inside the cabinet terminal blocks at different depths, greatly improving the convenience of the inspection operation. Furthermore, in the angle adjustment mechanism 2, one end of the shaft seat 22 is hinged to the far end of the telescopic rod 1 via a first pin 23 arranged along the Y-axis, and the other end of the shaft seat 22 is hinged to the mounting frame 21 via a second pin 24 arranged parallel to the Z-axis.

[0031] In use, the mirror base 3 can be adjusted and the mounting bracket 21 can drive the shaft seat 22 to rotate relative to the telescopic rod 1 around the first pin 23, thereby adjusting the axial deflection angle of the mirror surface 4 relative to the telescopic rod 1; the mirror base 3 can also be adjusted and the mounting bracket 21 can rotate relative to the shaft seat 22 around the second pin 24, thereby adjusting the radial deflection angle of the mirror surface 4 relative to the telescopic rod 1. This allows for multi-directional and multi-angle adjustment of the mirror surface 4 relative to the telescopic rod 1, facilitating observation of signal cable terminations from appropriate angles within the confined space of the cabinet. This helps to promptly detect abnormalities such as incorrect connections, loose connections, exposed cables, and loose cables, avoiding misdetection and missed detection, and ensuring the safe operation of the nuclear power unit.

[0032] The technical solution of this application will be further illustrated below through two specific embodiments.

[0033] Example 1

[0034] Please see Figure 1 In some embodiments, the telescopic rod 1 includes a gripping section 11 and at least one telescopic section 12 connected to the gripping section 11 and movable along the Z-axis. The mirror base 3 is connected to the corresponding telescopic section 12 at its farthest end via an angle adjustment mechanism 2. In this embodiment, the telescopic rod 1 is described using a two-section telescopic structure as an example. That is, the telescopic rod 1 includes a gripping section 11 and a telescopic section 12. The telescopic section 12 can move telescopically relative to the gripping section 11 along the Z-axis, thereby adjusting the extension length of the mirror 4 and enabling quality inspection of the signal cable terminations inside the cabinet terminal blocks at different depths within the cabinet.

[0035] The proximal end of the grip section 11 can be provided with a handle 111 for easy hand operation by the inspector. The handle 111 can be made of silicone or rubber to increase the comfort of hand operation, increase the friction with the inspector's hand, and prevent the position and angle of the mirror 4 from changing due to hand slippage during the inspection.

[0036] The holding section 11 can be configured as a cylindrical structure, and the telescopic section 12 is inserted into the holding section 11 and can move axially relative to the holding section 11. The outer diameter of the telescopic section 12 can be set to match the inner diameter of the holding section 11 to prevent wobbling during the telescopic movement of the telescopic section 12.

[0037] A locking structure (not shown) can be provided between the holding section 11 and the telescopic section 12, or the extension length of the telescopic section 12 can be locked by relying on the frictional resistance between the two.

[0038] Please see Figure 2 and Figure 3 In some embodiments, the telescopic section 12 of the telescopic rod 1 is provided with two opposing first mounting arms 121 extending along the X-axis. The two first mounting arms 121 are arranged in a front-to-back manner in the Y-axis direction, and the two first mounting arms 121 are provided with corresponding first mounting holes (not shown) arranged in a front-to-back manner in the Y-axis direction.

[0039] The bearing seat 22 can be configured as a cube structure, with one end of the bearing seat 22 facing the telescopic rod 1 and the other end facing the mirror base 3. During assembly, the end of the bearing seat 22 facing the telescopic rod 1 can be inserted between the two first mounting arms 121, and the first shaft hole 221 is positioned between the two first mounting holes in the Y-axis direction. The first pin 23 passes through the first shaft hole 221, and both ends of the first pin 23 are respectively inserted into the corresponding first mounting holes, thereby realizing the hinged connection between the bearing seat 22 and the telescopic rod 1.

[0040] The length of the first mounting arm 121 extending along the X-axis can be set according to the size of the mirror base 3, the axial deflection angle range of the mirror surface 4 relative to the telescopic rod 1, etc. This application does not impose any limitations, as long as it meets the adjustment range requirements of the axial deflection angle of the mirror surface 4.

[0041] Please see Figure 1 and Figure 2 In some embodiments, the mirror base 3 can be configured as a circular structure. The mirror base 3 has a first surface (not shown) and a second surface (not shown) that are arranged opposite to each other and parallel to the Z-axis. The first surface faces the telescopic rod 1, and the second surface faces away from the telescopic rod 1. The mounting bracket 21 is fixedly connected to the first surface, and the mirror 4 is fixedly connected to the second surface.

[0042] Please see Figure 3 The mounting bracket 21 can be configured as a U-shaped mounting bracket 21. The mounting bracket 21 includes two opposing second mounting arms 211 and a fixed end 212 that is vertically connected to the two second mounting arms 211 from one end. The fixed end 212 is fixedly connected to the first surface of the mirror base 3. The two second mounting arms 211 extend perpendicularly to the first surface toward the telescopic rod 1, and the two second mounting arms 211 are arranged in an upward and downward opposing manner along the Z-axis. The two second mounting arms 211 are correspondingly provided with second mounting holes 213 arranged in opposition along the Z-axis.

[0043] During assembly, the other end of the bearing seat 22 can be inserted between the two second mounting arms 211 of the mounting bracket 21, and the second shaft hole 222 is positioned between the two second mounting holes 213 in the Z-axis direction. The second pin 24 passes through the second shaft hole 222, and both ends of the second pin 24 are respectively inserted into the corresponding second mounting holes 213, thereby realizing the hinged connection between the bearing seat 22 and the mounting bracket 21.

[0044] To achieve precise adjustment of the axial and radial deflection angles of the mirror 4 relative to the telescopic rod 1, the first pin 23 and the second pin 24 can be set as arbitrary stop damping pivots. During use, the inspector needs to apply a certain external force to the mirror base 3 to overcome the resistance of the corresponding arbitrary stop damping pivot and achieve arbitrary adjustment of the axial or radial deflection angle of the mirror 4. This prevents the angle of the mirror 4 from easily changing due to external force interference during use and ensures the accuracy of the inspection.

[0045] Mirror 4 includes a concave mirror, which uses light reflection to form an image and has a focusing effect. When the object distance is less than the focal length, it can form an upright, magnified virtual image; when the object distance is between one and two times the focal length, it forms an inverted, magnified real image. During use, the inspector can control the depth of the mirror base 3 into the cabinet by extending the telescopic section 12 relative to the holding section 11, thereby adjusting the distance between the concave mirror and the target end, thus adjusting the object distance, and forming a magnified real or virtual image of the target end on the concave mirror for easy visual observation.

[0046] Please see Figure 1 and Figure 2 In some embodiments, a light source 5 is also provided on the second surface of the mirror base 3, and the light source 5 is arranged around the outer periphery of the mirror surface 4. The light source 5 can be multiple point light sources (such as LED beads), which are evenly distributed around the outer periphery of the mirror surface 4; the light source 5 can also be a line light source (such as an LED light strip), which is arranged around the outer periphery of the mirror surface 4. In this embodiment, the light source 5 is an LED light strip as an example.

[0047] Light source 5 can provide additional light to illuminate the surrounding space when there is insufficient light inside the cabinet, allowing for clearer and more accurate inspection of cable termination quality. The type and quantity of light source 5 can be set according to actual usage requirements; this application does not limit this, as long as it meets the supplementary lighting needs.

[0048] Please see Figure 1 and Figure 2 In some embodiments, the device further includes a power supply 6 and a control unit 7. The power supply 6 is disposed in the telescopic rod 1 or the mirror base 3, and is electrically connected to the light source 5. The power supply 6 includes a battery, which is preferably disposed in the telescopic rod 1 to avoid occupying space in the mirror base 3 itself, thereby reducing the overall volume of the mirror base 3 and facilitating the operation of the mirror 4 in confined spaces.

[0049] The control component 7 is located at the near end of the telescopic rod 1, preferably on the handle 111, for easy hand operation by the inspector. At least one control button 71 may be provided on the control component 7. The control component 7 is electrically connected to the power supply 6 and the light source 5, allowing the inspector to manually control the light source 5 to turn on and off via the corresponding control button 71.

[0050] During use, inspectors can control the light source 5 to turn on and off using the corresponding control buttons 71 on the control unit 7. The operation is simple and convenient, which improves the efficiency of the inspection of signal cable termination.

[0051] Please see Figure 1 and Figure 2In some embodiments, the device further includes a battery box 8, which is fixedly connected to the gripping section 11 of the telescopic rod 1, and the battery is housed in the battery box 8. The gripping section 11 and the telescopic section 12 are provided with at least one wire hole 10 for a wire to pass through. The main body of the wire (not shown) can be housed in the inner cavity of the telescopic rod 1 through the corresponding wire hole 10, and the end of the wire can pass through the corresponding wire hole 10 and be electrically connected to the battery box 8, the control component 7, and the light source 5.

[0052] Example 2

[0053] Please see Figures 4 to 5 The difference between Embodiment 2 and Embodiment 1 is that the angle adjustment mechanism 2 is different. Other similar parts will not be described again below.

[0054] In some embodiments, the angle adjustment mechanism 2 further includes a movable member 25, a push rod 26, and a universal connector 27, wherein the movable member 25 reciprocates relative to the telescopic rod 1 along the Z-axis.

[0055] The push rod 26 includes a first end (not shown) and a second end (not shown). The first end has a third shaft hole 261 arranged along the Y-axis, and the first end is hinged to the movable member 25 through a third pin 28 passing through the third shaft hole 261. The second end has two opposing third mounting arms 262 extending along the X-axis. The two third mounting arms 262 are arranged in a front-to-back manner along the Y-axis, and the two third mounting arms 262 have corresponding third mounting holes (not shown) arranged opposite each other along the Y-axis.

[0056] During assembly, the end of the bearing seat 22 facing the telescopic rod 1 can be inserted between the two third mounting arms 262 of the push rod 26, with the first shaft hole 221 positioned between the two third mounting holes in the Y-axis direction. The first pin 23 passes through the first shaft hole 221, and both ends of the first pin 23 are respectively inserted into the corresponding third mounting holes, thus achieving a hinged connection between the bearing seat 22 and the second end of the push rod 26. The other end of the bearing seat 22 is inserted between the two second mounting arms 211 of the mounting bracket 21, with the second shaft hole 222 positioned between the two second mounting holes 213 in the Z-axis direction. The second pin 24 passes through the second shaft hole 222, and both ends of the second pin 24 are respectively inserted into the corresponding second mounting holes 213, thus achieving a hinged connection between the bearing seat 22 and the mounting bracket 21.

[0057] The universal connector 27 is positioned closer to the proximal end of the telescopic rod 1 than the movable part 25, and one end of the universal connector 27 is connected to the telescopic section 12 of the telescopic rod 1, while the other end of the universal connector 27 is connected to the mirror mount 3.

[0058] During use, the movable part 25 moves to the first position (e.g. Figure 4When the movable part 25 is in its current position and drives the push rod 26 to swing to be perpendicular to the axis of the telescopic rod 1, the second end of the push rod 26 is at its farthest vertical distance from the telescopic rod 1. It can push the mirror base 3 outward through the push rod 26, the bearing seat 22, and the mounting bracket 21, and make the mirror base 3 deflect to the maximum deflection angle relative to the axis of the telescopic rod 1 with the universal joint of the universal connector 27 as the axis of rotation. When the movable part 25 moves from the first position to the far end or near end of the telescopic rod 1, the second end of the push rod 26 gradually approaches the telescopic rod 1, which plays the role of pulling the mounting bracket 21, so that the mirror base 3 as a whole can deflect axially towards the side of the telescopic section 12 with the corresponding universal joint of the universal connector 27 as the axis of rotation, thereby making the axial deflection angle of the mirror surface 4 relative to the telescopic rod 1 gradually decrease. Thus, by moving the movable part 25 relative to the telescopic rod 1, the push rod 26 can be retracted or pushed outward, and then the push rod 26 acts on the mirror base 3, causing the mirror base 3 to rotate axially relative to the telescopic rod 1 with the universal joint of the universal connector 27 as the axis of rotation.

[0059] Preferably, the first position can be the position where the movable part 25 is moved to its farthest end relative to the telescopic rod 1 (e.g., Figure 4 As shown in the diagram, during the movement of the movable part 25 from the first position toward the proximal end of the telescopic rod 1, the push rod 26, the bearing seat 22, and the mounting bracket 21 pull the mirror base 3, reducing the axial deflection angle of the mirror surface 4 relative to the telescopic rod 1; when the movable part 25 moves from the first position toward the proximal end of the telescopic rod 1 to its limit position, the axial deflection angle of the mirror surface 4 can be set to 0° (e.g., Figure 5 (As shown in the diagram). This significantly reduces the range of movement of the movable part 25 in the axial direction of the telescopic rod 1, which is beneficial for the compact and miniaturized design of the inspection device.

[0060] The range of axial movement of the movable part 25 relative to the telescopic rod 1, the length of the push rod 26, etc., can all be set according to the design range of the axial deflection angle of the mirror 4 relative to the telescopic rod 1. This application does not limit this, as long as it can meet the actual use requirements.

[0061] The universal connector 27 can be any one of a single-section universal connector, a double-section universal connector, or a three-section universal connector. This application does not limit this type of connector, as long as it can meet the adjustment requirements of the axial deflection angle and radial deflection angle of the mirror surface.

[0062] Please see Figure 4 and Figure 5 In some embodiments, the angle adjustment mechanism 2 further includes a drive member 29 connected to the movable member 25 for driving the movable member 25 to reciprocate axially relative to the telescopic rod 1.

[0063] The driving component 29 can drive the movable component 25 to move relative to the telescopic rod 1, and then control the axial deflection angle of the mirror base 3 through the push rod 26. This allows the inspector to remotely control the axial deflection of the mirror surface 4 through the driving component 29 without removing the mirror base 3 during the inspection process, which greatly improves the convenience of the inspection operation.

[0064] Please see Figure 4 and Figure 5 In some embodiments, the driving component 29 includes a driving screw 291 and a servo motor 292. The distal end of the telescopic section 12 is provided with a connecting section 13 extending along the Z-axis. This connecting section 13 can be configured as a tubular structure with an inner cavity, and a guide groove 131 extending along the Z-axis and connecting the inner cavity of the connecting section 13 with the external space is formed on the side wall of the connecting section 13 facing the mirror base 3 (e.g., Figure 4 (As shown in the diagram). The two ends of the connecting section 13 are provided with connecting portions 132, and the connecting portions 132 are provided with connecting holes (not shown) arranged opposite to each other along the Z-axis.

[0065] The drive screw 291 is axially rotatably connected to the inner cavity of the connecting section 13, and the upper and lower ends of the drive screw 291 are respectively inserted into the connecting holes of the corresponding connecting parts 132.

[0066] The movable part 25 can be configured as a threaded sleeve structure that mates with the drive screw 291, such that the movable part 25 is threadedly connected to the drive screw 291. The movable part 25 is axially slidably connected to the connecting section 13.

[0067] Preferably, the movable member 25 is provided with two opposing fourth mounting arms 251 extending along the X-axis. The two fourth mounting arms 251 are arranged in a front-to-back manner along the Y-axis. The two fourth mounting arms 251 extend at least partially out of the connecting section 13 through the guide groove 131, and the ends of the two fourth mounting arms 251 extending out of the connecting section 13 are respectively provided with fourth mounting holes (not shown) arranged opposite each other along the Y-axis. When the drive screw 291 rotates, the movable member 25 reciprocates axially relative to the connecting section 13 under the constraint of the fourth mounting arms 251 and the guide groove 131.

[0068] During assembly, the first end of the push rod 26 can be inserted between the two fourth mounting arms 251, and the third shaft hole 261 is positioned between the two fourth mounting holes in the Y-axis direction. The third pin 28 passes through the third shaft hole 261, and both ends of the third pin 28 are respectively inserted into the corresponding fourth mounting holes to realize the hinged connection between the push rod 26 and the movable part 25.

[0069] The servo motor 292 is fixed to the telescopic rod 1. The servo motor 292 can be located at one end of the telescopic section 12 facing the connecting section 13, or at the far end of the connecting section 13; this application does not limit this. The power output shaft of the servo motor 292 is connected to the drive screw 291 and is used to drive the drive screw 291 to rotate.

[0070] The power output shaft of the servo motor 292 can be directly coaxially connected to the drive screw 291 via a coupling, or it can be connected to the drive screw 291 via a gear set or other transmission components. This application does not limit this.

[0071] The servo motor 292 is electrically connected to the power supply 6 and the control unit 7. Correspondingly, the control unit 7 is equipped with corresponding control buttons 71 for controlling the operation of the servo motor 292. This allows inspectors to control the operation of the servo motor 292 via the corresponding control buttons 71 on the control unit 7. The drive screw 291 drives the movable part 25 to reciprocate axially relative to the telescopic section 12, thereby achieving remote control of the axial deflection angle of the mirror surface 4. The servo motor 292 can precisely control the rotation angle of its power output shaft, and can precisely adjust the movement distance of the movable part 25 in the Z-axis. This allows for precise adjustment of the axial deflection angle of the mirror surface 4 via the push rod 26, mounting bracket 21, and mirror base 3.

[0072] In some other embodiments, the drive member 29 includes a linear motor (not shown) which is axially fixedly connected to the telescopic rod 1, and a movable member 25 which is fixedly connected to the power output shaft of the linear motor and axially slidably connected to the telescopic rod 1.

[0073] The linear drive motor is electrically connected to the power supply 6 and the control unit 7. Correspondingly, the control unit 7 is equipped with corresponding control buttons 71 for controlling the operation of the servo motor 292, so that the inspector can control the operation of the linear motor through the corresponding control buttons 71 on the control unit 7, and directly drive the movable part 25 to move back and forth axially relative to the telescopic section 12 through the power output shaft of the linear motor, thereby realizing remote control of the axial deflection angle of the mirror surface 4.

[0074] Compared to using a servo motor 292 and a drive screw 291 to move the moving part 25, using a linear motor can eliminate the need for the intermediate drive screw 291, which helps to reduce costs and size.

[0075] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A visual inspection device for signal cable terminations, characterized in that, The device includes: Telescopic pole (1); A mirror base (3) is connected to the telescopic rod (1) via an angle adjustment mechanism (2). A mirror surface (4) is provided on the side of the mirror base (3) facing away from the angle adjustment mechanism (2). The angle adjustment mechanism (2) includes: Mounting bracket (21) is fixed to the mirror base (3); The bearing seat (22) has a first shaft hole (221) and a second shaft hole (222) at both ends. The first shaft hole (221) is perpendicular to the axial direction of the telescopic rod (1), and the second shaft hole (222) is parallel to the axial direction of the telescopic rod (1). One end of the bearing seat (22) is hinged to the far end of the telescopic rod (1) via a first pin (23) passing through the first shaft hole (221), and the other end of the bearing seat (22) is hinged to the mounting bracket (21) via a second pin (24) passing through the second shaft hole (222).

2. The signal cable termination visual inspection device according to claim 1, characterized in that, The mirror (4) includes a concave mirror.

3. The signal cable termination visual inspection device according to claim 1, characterized in that, The mirror base (3) is also provided with a light source (5), which is arranged around the outer periphery of the mirror surface (4).

4. The signal cable termination visual inspection device according to claim 3, characterized in that, The device further includes: A power supply (6) is provided on the telescopic rod (1) or the mirror base (3) and is electrically connected to the light source (5); The control component (7) is located at the near end of the telescopic rod (1) and is electrically connected to the power supply (6) and the light source (5) for controlling the opening and closing of the light source (5).

5. The signal cable termination visual inspection device according to claim 1, characterized in that, The first pin (23) and / or the second pin (24) are arbitrary stop damping shafts.

6. The signal cable termination visual inspection device according to claim 1, characterized in that, The telescopic rod (1) includes a grip section (11) and at least one telescopic section (12) connected to the grip section (11) and axially movable relative to the grip section (11). The mirror base (3) is connected to the corresponding telescopic section (12) extending to the farthest end via the angle adjustment mechanism (2).

7. The signal cable termination visual inspection device according to any one of claims 1-6, characterized in that, The angle adjustment mechanism (2) further includes: The movable part (25) reciprocates axially relative to the telescopic rod (1); The push rod (26) includes a first end and a second end, the first end being hinged to the movable part (25) and the second end being hinged to the bearing seat (22) via the first pin (23); The universal connector (27) is located closer to the proximal end of the telescopic rod (1) than the movable part (25). One end of the universal connector (27) is connected to the telescopic rod (1), and the other end is connected to the mirror base (3).

8. The signal cable termination visual inspection device according to claim 7, characterized in that, The angle adjustment mechanism (2) further includes a drive member (29), which is connected to the movable member (25) and is used to drive the movable member (25) to move axially back and forth relative to the telescopic rod (1).

9. The signal cable termination visual inspection device according to claim 8, characterized in that, The drive unit (29) includes: A drive screw (291) is rotatably connected to the distal end of the telescopic rod (1) along the axial direction; the movable part (25) is threadedly connected to the drive screw (291), and the movable part (25) is slidably connected to the telescopic rod (1) along the axial direction; A servo motor (292) is fixed to the telescopic rod (1). The power output shaft of the servo motor (292) is connected to the drive screw (291) to drive the drive screw (291) to rotate.

10. The signal cable termination visual inspection device according to claim 8, characterized in that, The drive unit (29) includes: A linear motor is fixedly connected to the telescopic rod (1) along the axial direction; the movable part (25) is fixedly connected to the power output shaft of the linear motor, and the movable part (25) is slidably connected to the telescopic rod (1) along the axial direction.

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