Laser target shooting device for switch cabinet

Abstract

This invention relates to a laser targeting device for switchgear, comprising a beam emitting camera and a target aiming device respectively installed in the moving and stationary contacts of the switchgear. Both the beam emitting camera and the target aiming device include expandable and retractable positioning cylinders. The beam emitting camera has a laser generator and a camera at its end facing the target aiming device, and the target aiming device has a target at its end facing the beam emitting camera. This laser targeting device for switchgear transforms the alignment status of the moving and stationary contacts of the switchgear into a visible target surface position deviation, allowing for intuitive judgment of the deviation. This improves the accuracy of switchgear contact alignment detection. The operation is simple, improving on-site maintenance efficiency. It enables early detection of moving and stationary contact alignment deviations during maintenance, preventing localized overheating, burning, or operational failures due to poor contact, thus improving switchgear operational reliability and reducing the risk of unplanned power outages.

Description

Technical Field

[0001] This invention relates to the field of power equipment maintenance technology, and in particular to a laser targeting device for switchgear. Background Technology

[0002] Switchgear is a crucial piece of equipment in power systems used for power distribution, control, and protection. The precision of the fit between its internal moving and stationary contacts directly affects the switchgear's conductivity reliability and operational safety. During long-term operation, maintenance, disassembly, or trolley retraction, misalignment may occur between the moving and stationary contacts due to mechanical wear, installation errors, track deformation, or loose components. When the moving and stationary contacts fail to align accurately, it can easily lead to reduced contact area, increased contact resistance, localized overheating, or even ablation. In severe cases, it can cause equipment failure or unplanned power outages.

[0003] Currently, the inspection of switchgear contact alignment relies heavily on manual observation, mechanical measurement, or experience-based judgment. Because the contacts are typically located deep within the cabinet, the inspection space is limited, and visibility is easily obstructed, making it difficult to directly and accurately determine the coaxiality and engagement status of the moving and stationary contacts manually. Furthermore, traditional measurement methods are mostly limited to static conditions, failing to visually reflect the relative positional changes during contact engagement, resulting in low inspection efficiency, significant errors, and heavy reliance on the experience of maintenance personnel. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a laser targeting device for switchgear, which can intuitively judge the deviation of moving and stationary contacts, thereby improving the accuracy of switchgear contact alignment detection and improving on-site maintenance efficiency.

[0005] The present invention is implemented by the following scheme: a laser target-shooting device for switch cabinet, comprising a beam emitting camera device and a target-shooting device respectively installed in the moving contact and the stationary contact of the switch cabinet. Both the beam emitting camera device and the target-shooting device include an expandable and retractable positioning cylinder. The beam emitting camera device is provided with a laser generator and a camera at one end facing the target-shooting device, and the target-shooting device is provided with a target body at one end facing the beam emitting camera device.

[0006] Furthermore, the positioning cylinder includes an inner sleeve and an outer sleeve that expands and contracts outside the inner sleeve. The outer sleeve is formed by several arc-shaped support pieces, and an elastic hoop is fitted on the outside of the outer sleeve. A locking ring is threaded to the front end of the inner sleeve. The locking ring and the rear end of the inner sleeve are provided with conical rings that abut against the inner sides of both ends of the outer sleeve, so that the expansion and contraction of the outer sleeve can be achieved by turning the locking ring.

[0007] Furthermore, the inner casing of the main body is provided with a component housing, and the laser generator and camera are installed at the front end of the component housing of the beam emitting camera device; the target is installed at the front end of the component housing of the target-aiming device.

[0008] Furthermore, the housing of the beam emitting camera device contains a main controller, a battery, a storage module, and a wireless transmission module, and the rear end of the housing of the beam emitting camera device has a charging port and a control switch.

[0009] Furthermore, the outer surface of the expansion and contraction jacket is provided with a limiting groove that cooperates with the elastic hoop.

[0010] Furthermore, the locking ring has an internal thread inside, and the front end of the inner sleeve of the main body has an external thread that matches the internal thread of the locking ring; the locking ring has a hand-tightening part on the outside, and the outer surface of the hand-tightening part has anti-slip texture.

[0011] Furthermore, the target body is provided with graduations.

[0012] A method for operating the laser targeting device for switchgear as described above involves installing a beam-emitting camera device into the inner hole of the moving contact of the switchgear, and then installing a target-aligning device into the inner hole of the corresponding stationary contact. The locking rings on both devices are then rotated to open the inner support plates outwards and allow them to fit against the inner wall of the contact hole. The moving and stationary contacts of the switchgear then engage, and the laser beam emitted by the laser generator is projected onto the target. The camera captures the laser projection position on the target and wirelessly transmits the captured image to an external observation device in real time. Maintenance personnel can then determine the alignment of the moving and stationary contacts by observing the position of the laser projection point on the target in real time through the external observation device.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The laser target device for switchgear of the present invention realizes the transformation of the alignment state of the moving and stationary contacts of the switchgear into a visual target surface position deviation, which can intuitively judge the deviation of the moving and stationary contacts, thereby improving the accuracy of switchgear contact alignment detection. The operation steps are simple, which is conducive to improving the efficiency of on-site maintenance. It can detect the alignment deviation of the moving and stationary contacts in advance during the maintenance process, avoid local overheating, burning or operation failure caused by poor contact, improve the reliability of switchgear operation, and reduce the risk of unplanned power outages.

[0014] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through specific embodiments and related drawings. Attached Figure Description

[0015] Figure 1 This is a perspective view of the laser targeting device for switchgear according to an embodiment of the present invention. Figure 2This is a perspective view of the laser targeting device for switchgear according to an embodiment of the present invention; Figure 3 This is an exploded view of the beam emission camera device according to an embodiment of the present invention; Figure 4 This is a cross-sectional view of the positioning cylinder according to an embodiment of the present invention; The following are the labels in the diagram: 1. Beam emitting camera device; 2. Camera; 3. Locking ring; 4. Laser generator; 5. Charging port; 6. Target aiming device; 7. Target body; 8. Elastic hoop; 9. Arc-shaped support plate; 10. Inner sleeve of the main body. Detailed Implementation

[0016] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0017] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0018] like Figures 1-4 As shown, a laser targeting device for a switch cabinet includes a beam emitting camera device 1 and a target targeting device 3 respectively installed in the moving contact and stationary contact of the switch cabinet. Both the beam emitting camera device and the target targeting device include an expandable positioning cylinder. The beam emitting camera device is provided with a laser generator 4 and a camera 2 at one end facing the target targeting device. The laser generator 4 is located at the center of the end. The target targeting device is provided with a target body 7 at one end facing the beam emitting camera device.

[0019] The beam-emitting camera device 1 and the target-aiming device 3 are respectively installed inside the moving and stationary contacts of the switch cabinet (their positions can also be reversed). The laser generator 4 is used to emit a laser beam towards the target 7, and the camera 2 is used to capture images of the position of the laser beam projected onto the target 7. The images captured by the camera 2 can be transmitted wirelessly in real time to an external observation device, allowing maintenance personnel to observe the position of the laser beam projected onto the target 7 in real time during the engagement of the equipment (i.e., the moving and stationary contacts). The target 7 is equipped with a scale for displaying the offset, allowing maintenance personnel to obtain the installation position offset value when the moving and stationary contacts are engaged based on the scale indicating the location of the laser beam projection point on the target 7.

[0020] In this embodiment, the positioning cylinder includes a main inner sleeve 10 and an expansion and contraction outer sleeve outside the main inner sleeve. The expansion and contraction outer sleeve is formed by several arc-shaped support pieces 9, and the multiple inner support pieces 9 are distributed circumferentially along the main inner sleeve 10. An elastic hoop 8 is fitted on the outside of the expansion and contraction outer sleeve. A locking ring 3 is threaded to the front end of the main inner sleeve 10. The locking ring 3 and the rear end of the main inner sleeve 10 are respectively provided with conical ring portions that abut against the inner sides of both ends of the expansion and contraction outer sleeve so that the expansion and contraction outer sleeve can be expanded and contracted by turning the locking ring. The inner support pieces 9 can be opened outward when the locking ring 3 is tightened, and when the locking ring 3 is loosened, they are released from contact with the inner wall of the contact hole under the action of the elastic hoop 8.

[0021] When the locking ring 3 is rotated, it moves backward along the axial direction of the inner sleeve 10 under the action of the thread. The tapered ring portion of the locking ring 3 and the tapered ring portion at the rear end of the inner sleeve 10 respectively push the two ends of the inner support plate 9 to move radially outward, so that the outer side of the inner support plate 9 fits against the inner wall of the switch cabinet contact. As a result, the beam emitting camera device 1 and the target device can be stably fixed inside the corresponding contact, and are not prone to shaking or displacement, thus ensuring the accuracy of the detection results.

[0022] In this embodiment, the inner casing of the main body is provided with a component housing, and the laser generator and camera are mounted on the front end of the component housing of the beam emitting camera device; the target is mounted on the front end of the component housing of the target aiming device. The target aiming device 6 is arranged opposite to the beam emitting and camera device 1, and the target 7 is arranged on the end face of the target aiming device 6. The target 7 is used to receive the laser beam emitted by the laser generator 4, and the scale on the target is used to help determine whether the laser beam projection position is located in the center area of ​​the target.

[0023] In this embodiment, the component housing of the beam emitting camera device is equipped with a main controller, a battery, a storage module and a wireless transmission module. The rear end of the component housing of the beam emitting camera device is equipped with a charging port 5 and a control switch. The charging port 5 is used to charge the beam emitting camera device 1 to meet the needs of on-site maintenance.

[0024] In this embodiment, the outer side of the expansion and contraction jacket is provided with a limiting groove that cooperates with the elastic hoop.

[0025] In this embodiment, the locking ring has an internal thread inside, and the front end of the inner sleeve of the main body has an external thread that matches the internal thread of the locking ring; the locking ring has a hand-tightening part on the outside, and the outer surface of the hand-tightening part has anti-slip texture.

[0026] A method for operating the laser targeting device for switchgear as described above involves first activating the beam emitting camera device 1 and inserting it into the inner hole of the moving contact of the switchgear. Then, the target-aligning device 6 is inserted into the corresponding inner hole of the stationary contact (or vice versa). Next, the locking rings 3 on both devices are rotated to open the inner support plates 9 outwards and allow them to fit against the inner wall of the contact hole until both devices are securely fixed without any looseness. Then, the moving and stationary contacts of the switchgear engage, and the laser beam emitted by the laser generator 4 is projected onto the target 7. The camera 2 captures the laser projection position on the target 7 and wirelessly transmits the captured image to an external observation device in real time. Maintenance personnel can then observe the position of the laser projection point on the target in real time through the external observation device to determine the alignment of the moving and stationary contacts and read the offset value of the engagement position.

[0027] If the laser projection point is located in the center area of ​​the target or within the predetermined range, it indicates that the alignment of the moving and stationary contacts is good. If the laser projection point deviates significantly from the center, it indicates that there is eccentricity, misalignment, or installation deviation between the moving and stationary contacts. In this case, the offset value can be obtained based on the offset position of the laser projection point on the target's 7-marker, providing data support for subsequent adjustments to the switchgear trolley track, contact assembly, or related installation structure.

[0028] This invention provides a detection device that can reliably fix the moving and stationary contacts within the inner holes of a switchgear and achieve visual alignment judgment through laser projection and target display. The device is equipped with wireless real-time transmission, which can transmit the position image of the laser projection point on the target to an external observation device in real time, allowing maintenance personnel to observe the positional changes of the laser point during equipment engagement. The target is equipped with a scale for displaying offset, allowing maintenance personnel to read the offset value when the moving and stationary contacts engage, thereby improving the accuracy and convenience of switchgear contact positioning detection and providing data support for subsequent maintenance and adjustments. It transforms the contact alignment state into an observable target surface position deviation, thus achieving rapid and intuitive detection of the alignment state of the moving and stationary contacts in the switchgear.

[0029] The beneficial effects of the laser target-shooting device for switchgear of the present invention are as follows: (1) A laser beam is projected onto the target through a laser generator, and the laser projection position on the target is collected by a camera. This transforms the alignment status of the switch cabinet's moving and stationary contacts, which was originally difficult to observe directly, into a visual target surface position deviation, making it easier for maintenance personnel to intuitively judge whether the contacts are misaligned. (2) An expandable positioning cylinder structure is adopted. The locking ring moves through the thread and uses the tapered fit to push the inner support plate radially outward, so that the inner support plate fits with the inner diameter of the contact, thereby enabling the device to be stably fixed in the inner hole of the moving contact or the stationary contact, reducing the measurement error caused by the loosening of the device during the detection process. (3) Since the beam emitting camera device can form a stable coaxial support with the inner hole of the contact through the inner support plate, the beam emitted by the laser generator can more reliably reflect the direction of the central axis of the contact. By the projection position on the target, the deviation of the moving and stationary contacts can be judged, thereby improving the accuracy of the switch cabinet contact alignment detection. (4) When in use, simply insert the beam emitting camera device and the target device into the inner diameter of the moving contact and the stationary contact respectively, rotate the locking ring to complete the fixation, and then make the equipment mesh and observe the position of the light spot on the target to complete the detection. The operation steps are simple and conducive to improving the efficiency of on-site maintenance. (5) The laser projection position on the target is collected by the camera and the image is wirelessly transmitted to the external observation device in real time, so that the maintenance personnel can observe the position change of the laser projection point in real time during the engagement of the moving and stationary contacts; at the same time, the scale on the target can convert the projection point offset into a readable offset value, thereby providing data support for subsequent maintenance, adjustment and fault diagnosis.

[0030] (6) It can detect the misalignment of moving and stationary contacts in advance during the maintenance process, avoid local overheating, burning or operation failure caused by poor contact, improve the reliability of switchgear operation and reduce the risk of unplanned power outages.

[0031] Unless otherwise stated, if any of the technical solutions disclosed in this invention specify a numerical range, then the disclosed numerical range is a preferred numerical range. Anyone skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this invention discloses only some numerical values ​​to illustrate the technical solutions of this invention. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this invention.

[0032] If this invention discloses or relates to mutually fixedly connected components or structural parts, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured in one piece using a casting process) (except where it is obviously impossible to use an integral molding process).

[0033] In addition, unless otherwise stated, the terms used in any of the technical solutions disclosed in this invention to indicate positional relationships or shapes include states or shapes that are similar to, close to, or approximate with those states or shapes.

[0034] Any component provided by this invention can be assembled from multiple individual components or can be a single component manufactured by a one-piece molding process.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A laser targeting device for switchgear, characterized in that: The device includes a beam emitting camera and a target-aiming device, which are respectively installed in the moving contact and the stationary contact of the switch cabinet. Both the beam emitting camera and the target-aiming device include an expandable positioning cylinder. The beam emitting camera is provided with a laser generator and a camera at the end facing the target-aiming device, and the target-aiming device is provided with a target at the end facing the beam emitting camera.

2. The switchgear laser targeting device according to claim 1, characterized in that: The positioning cylinder includes an inner main body and an outer outer body that expands and contracts outside the inner main body. The expansion and contraction outer body is formed by several arc-shaped support pieces, and an elastic hoop is fitted on the outside of the expansion and contraction outer body. A locking ring is threaded to the front end of the inner main body. The locking ring and the rear end of the inner main body are provided with conical rings that abut against the inner sides of both ends of the expansion and contraction outer body so that the expansion and contraction outer body can be expanded and contracted by turning the locking ring.

3. The switchgear laser targeting device according to claim 2, characterized in that: The main body has a component housing inside, and the laser generator and camera are installed at the front end of the component housing of the beam emitting camera device; the target is installed at the front end of the component housing of the target-aiming device.

4. The switchgear laser targeting device according to claim 2, characterized in that: The housing of the beam-emitting camera device contains a main controller, a battery, a storage module, and a wireless transmission module. The rear end of the housing of the beam-emitting camera device has a charging port and a control switch.

5. The switchgear laser targeting device according to claim 2, characterized in that: The outer side of the expansion and contraction jacket is provided with a limiting groove that cooperates with the elastic hoop.

6. The laser targeting device for switchgear according to claim 2, characterized in that: The locking ring has an internal thread inside, and the front end of the inner sleeve of the main body has an external thread that matches the internal thread of the locking ring; the locking ring has a hand-tightening part on the outside, and the outer surface of the hand-tightening part has anti-slip texture.

7. The switchgear laser targeting device according to claim 7, characterized in that: The target is marked with graduations.

8. A method for operating the laser targeting device for switchgear as described in claim 7, characterized in that: In use, the beam-emitting camera device is installed into the inner hole of the moving contact of the switchgear, and the target-aligning device is installed into the inner hole of the corresponding stationary contact. Then, the locking rings on the two devices are rotated to make the inner support plates open outward and fit against the inner wall of the contact hole. Then, the moving contact and the stationary contact of the switchgear are engaged, and the laser beam emitted by the laser generator is projected onto the target. The camera captures the laser projection position on the target and wirelessly transmits the captured image to an external observation device in real time. The maintenance personnel can then observe the position of the laser projection point on the target in real time through the external observation device to determine the alignment of the moving contact and the stationary contact.

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