CN216385503U

CN216385503U - Cable insulation thickness detection equipment

Info

Publication number: CN216385503U
Application number: CN202122809524.3U
Authority: CN
Inventors: 方振邦; 陈国宏; 缪春辉; 张洁; 赵骞; 滕越
Original assignee: Electric Power Research Institute of State Grid Anhui Electric Power Co Ltd
Current assignee: Electric Power Research Institute of State Grid Anhui Electric Power Co Ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-04-26
Anticipated expiration: 2031-11-16

Abstract

The utility model relates to a cable insulation layer thickness detection device, which comprises: camera, check out test set main part, fixture, elevating system, annular light source, microscope carrier and bracket component. The clamping mechanism is used for clamping the cable. The lifting mechanism is used for driving the clamping mechanism to vertically lift so as to enable the tangent plane of the cable to be opposite to the telecentric lens of the camera. The bracket assembly comprises a first bracket and a third bracket. The first support is used for supporting the camera. The third support is used for supporting the lifting mechanism. This check out test set can realize through setting up the bracket component that camera, annular light source and cable can both fix on the microscope carrier steadily relatively to when shooing the cable tangent plane, camera, annular light source and cable can be static relatively each other, thereby make the shooting image of cable tangent plane more clear reliable, and then make testing result more accurate.

Description

Cable insulation thickness detection equipment

Technical Field

The utility model relates to the technical field of measuring instruments, in particular to a cable insulation layer thickness detection device.

Background

A cable is typically a rope-like cable made up of several wires or groups of wires stranded, which is entirely surrounded by a highly insulating layer (covering) to transmit power or information from one location to another.

The section image of cable needs to be obtained when the thickness of cable insulation detects, thereby often needs the handheld camera of staff or the cable sample that awaits measuring to shoot when obtaining the section image at present, and this kind of detection mode exists that the image is not clear enough and the angle is accurate inadequately to influence the testing result of cable insulation thickness, and the testing process is still convenient inadequately.

SUMMERY OF THE UTILITY MODEL

Therefore, the thickness detection equipment for the cable insulation layer is needed to be provided aiming at the technical problem that the detection result of the thickness of the cable insulation layer is influenced by the defects that an image is not clear enough and an angle is not accurate enough in the existing detection mode for the cable insulation layer.

The utility model discloses a cable insulation layer thickness detection device, which comprises: camera, check out test set main part, fixture, elevating system, microscope carrier and bracket component. The camera is used for acquiring a shot image of the cable section. The detection device body is used for calculating the thickness of the insulating layer of the cable according to the shot image. The clamping mechanism is used for clamping the cable. The lifting mechanism is used for driving the clamping mechanism to vertically lift so as to enable the tangent plane of the cable to be opposite to the telecentric lens of the camera. The annular light source is used for irradiating the section of the cable and protruding the edge of the section of the cable. The annular light source and the telecentric lens of the camera are coaxially arranged, and the inner diameter of the annular light source is not less than the outer diameter of the telecentric lens. The microscope carrier is used for fixing the camera, the detection device main body, the lifting mechanism and the annular light source.

The bracket assembly comprises a first bracket and a third bracket. The first support is used for supporting the camera. The first support is arched, the bottom of the first support is fixedly arranged on the carrying platform, and the top of the first support is fixedly arranged with the camera. The third support is used for supporting the lifting mechanism. The section of the third support is of a right-angle bending type. And a right-angle edge at one side of the third support is fixedly connected with the carrying platform, and a right-angle edge at the other side of the third support is fixedly connected with the lifting mechanism.

In one embodiment, the cable insulation thickness detection apparatus further includes: an annular light source. The annular light source is used for irradiating the section of the cable and protruding the edge of the section of the cable; the annular light source and a telecentric lens of the camera are coaxially arranged, and the inner diameter of the annular light source is not smaller than the outer diameter of the telecentric lens; the annular light source is fixedly arranged on the upper surface of the carrying platform.

In one embodiment, the bracket assembly further comprises: a second support. The second bracket is used for supporting the annular light source; the bottom of the second support is fixedly arranged on the carrying platform; the top of the second support is provided with a semicircular groove matched with the outer edge of the annular light source, and the second support is fixedly connected with the annular light source through the semicircular groove.

In one embodiment, the clamping mechanism comprises: two clamping plates and a first adjusting component. Two clamping plates. A clamping space for clamping and fixing the cable is formed between the two clamping plates, and the center of the clamping space is positioned on the vertical plane where the telecentric lens is positioned. And the adjusting component is used for adjusting the distance of the clamping space.

In one embodiment, the first adjusting assembly comprises a first supporting plate, a bidirectional screw rod, a first knob and a first guide rod. The first support plate is a concave structure with an opening pointing to the telecentric lens, and the extension direction of the first support plate is parallel to the horizontal plane. Two ends of the bidirectional screw rod are respectively and rotatably arranged on two opposite sides of the inner wall of the supporting plate, and the bidirectional screw rod is respectively in threaded fit connection with the two clamping plates. One end of the bidirectional screw rod penetrates through the supporting plate and is fixedly connected with the first knob. Two ends of the first guide rod are respectively fixed with two opposite sides of the inner wall of the first support plate. The axial direction of the first guide rod is parallel to the bidirectional screw rod, and the first guide rod is connected with the clamping plate in a sliding mode.

In one embodiment, the lifting mechanism comprises: a mounting plate and a second adjusting component. The mounting plate is used for mounting the clamping mechanism. The upper surface of the mounting plate is fixedly connected with the first supporting plate. The adjusting assembly is used for adjusting the vertical height of the mounting plate.

In one embodiment, the second adjusting component comprises a second supporting plate, a threaded rod, a lifting block, a second knob and a second guide rod. The second support plate is a concave structure with an opening pointing to the telecentric lens, and the extension direction of the second support plate is vertical to the horizontal plane. Two ends of the threaded rod are respectively rotatably installed on two pairs of two sides of the inner wall of the second support plate, and the top of the threaded rod penetrates through the second support plate and is fixedly connected with the second knob. Two ends of the second guide rod are respectively fixed with two opposite sides of the inner wall of the second support plate. The axial direction of the second guide rod is parallel to the threaded rod. The lifting block is in threaded connection with the threaded rod, and the lifting block is in sliding connection with the second guide rod.

In one embodiment, two opposite sides of the two clamping plates are respectively provided with an anti-slip layer. The anti-slip layer is of a soft rubber structure.

In one embodiment, the detection device further comprises a housing. The shell is used for accommodating the camera, the detection equipment main body, the clamping mechanism, the lifting mechanism, the annular light source, the carrying platform and the support assembly.

In one embodiment, the bottom parts of the first support and the second support are fixed on the carrier through bolts. The third support is fixedly connected with the carrying platform through a bolt.

Compared with the prior art, the thickness detection equipment for the cable insulation layer provided by the utility model has the following beneficial effects:

1. this check out test set can realize through setting up the bracket component that camera, annular light source and cable can both fix on the microscope carrier steadily relatively to when shooing the cable tangent plane, camera, annular light source and cable can be static relatively each other, thereby make the shooting image of cable tangent plane more clear reliable, and then make testing result more accurate. Simultaneously camera, annular light source and elevating system can conveniently carry out the dismouting. Carry out the centre gripping through fixture to the cable that awaits measuring fixed, rethread elevating system is adjusted the height of cable tangent plane to satisfying the best shooting scope just to the camera lens with the cable tangent plane, and then can ensure that the cable tangent plane is shot completely by the camera and obtain, make the cable tangent plane image that the camera acquireed more clear complete. This check out test set's microscope carrier and bracket component can be used for supporting camera, annular light source and elevating system to the structural strength of equipment has been promoted, stability is increased.

2. One side that this check out test set's splint are close to the cable can also be equipped with the skid resistant course, and the skid resistant course can preferably be soft rubber, both can increase and the cable between frictional force, can also avoid causing cable tangent plane deformation because of the clamping-force is too big to make the testing result more accurate.

3. When the clamping mechanism of the detection device is used, the two-way screw rod can be driven to rotate through the first rotary knob, the two thread ends of the two-way screw rod are opposite in rotation direction, the two clamping plates are respectively screwed at the two ends of the two-way screw rod, and the clamping plates are limited to rotate by the first guide rod. Therefore, when the bidirectional screw rod rotates, the two clamping plates can be close to or far away from each other along the axial direction of the bidirectional screw rod, so that the space of the clamping space can be adjusted, and a cable to be tested is clamped. Simultaneously, elevating system can drive the threaded rod through two rotatory knobs and take place rotatoryly when using, because the lifting block and threaded rod spiro union to the lifting block is rotated by two restrictions of guide bar again, consequently when the threaded rod is rotatory, the height that the lifting block can change, thereby drives mounting panel and fixture and goes up and down, and then changes the tangent plane height that is located the cable at centre gripping space. Clamping mechanism and elevating system can both realize comparatively accurate fine setting to have stronger stability.

4. This check out test set's annular light source is the ring shape to annular light source's internal diameter is not less than the external diameter of telecentric mirror head, thereby can realize on the basis of the visual angle of the telecentric mirror head that does not shelter from the camera, can also shine the tangent plane of cable and outstanding cable tangent plane's edge, makes the image of acquireing more clear accurate, and then makes the calculated result to the cable insulation layer more accurate.

Drawings

FIG. 1 is a schematic partial perspective view of a cable insulation thickness detection apparatus according to a preferred embodiment of the present invention;

FIG. 2 is a schematic perspective view of a housing according to a preferred embodiment of the present invention;

FIG. 3 is a schematic perspective view of the clamping mechanism, the lifting mechanism and the camera shown in FIG. 1;

FIG. 4 is a schematic perspective view of the clamping mechanism, the lifting mechanism and the camera of FIG. 1 from another perspective;

fig. 5 is a top view of the clamping mechanism, the lifting mechanism, and the camera of fig. 1.

Description of the main elements

1. A camera; 2. detecting an apparatus main body; 21. a display screen; 22. a controller; 23. a power source; 311. a first support plate; 312. a bidirectional screw rod; 313. a first knob; 314. a first guide rod; 32. a splint; 41. mounting a plate; 421. a second support plate; 422. a threaded rod; 423. a lifting block; 424. a second knob; 425. a second guide rod; 5. an annular light source; 6. a stage; 7. a housing; 81. a first bracket; 82. a second bracket; 83. and a third bracket.

The present invention is described in further detail with reference to the drawings and the detailed description.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, 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 invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and fig. 2, the present embodiment provides a cable insulation thickness detection apparatus, including: the camera 1, the detection device main body 2, the clamping mechanism and the lifting mechanism can also comprise an annular light source 5, a carrying platform 6, a shell 7 and a bracket component.

The stage 6 is used to fix the camera 1, the detection apparatus main body 2, the lifting mechanism, and the ring light source 5. The camera 1, the detection apparatus main body 2, the lifting mechanism, and the ring light source 5 are all fixedly mounted on the upper surface of the stage 6.

The camera 1 is used to acquire a photographed image of a cable section. The camera 1 may employ an industrial camera of high resolution (not less than 2000 ten thousand pixels). The camera 1 can be internally provided with a telecentric lens and can also be connected with an external independent telecentric lens. The telecentric lens can realize the non-visual imaging and can be replaced according to the specification of the cable.

The detection device body 2 is used for calculating the thickness of the insulating layer of the cable according to the section image. In this embodiment, the detection apparatus main body 2 may include a display screen 21, a controller 22, and a power supply 23.

The display screen 21 can be connected with the camera 1, can display a visual image shot by the camera 1 in real time, and can also display a detection structure after the thickness of the cable insulation layer is detected. In this embodiment, the display screen 21 may be fixed on the outer side of the housing 7. The power supply 23 may be fixedly mounted on the stage 6 and may provide power to the camera 1, the ring light source 5, the display screen 21, the clamping mechanism, the lifting mechanism, and the controller. The controller 22 may be fixedly mounted on the carrier 6. The controller 22 may include an image processing module, a calculation module, and a light source control module. The image processing module may be configured to pre-process the captured image acquired by the camera 1, and extract a cable area of the captured image. The calculation module can calculate the thickness of the insulating layer of the cable according to the cable area. The light source control module may be used to control the switching and brightness adjustment of the ring light source 5.

Referring to fig. 3, the clamping mechanism is used for clamping the cable. In this embodiment, the clamping mechanism may include: a clamping plate 32 and a first adjusting component. The number of the chucking plate 32 is two. The clamping plate 32 is provided with a first threaded hole and a first through hole. A clamping space for clamping and fixing the cable is formed between the two clamping plates 32, and the center of the clamping space is positioned on the vertical plane where the telecentric lens is positioned. In this embodiment, one side of the clamping plate 32 close to the cable may further be provided with an anti-slip layer, and the anti-slip layer may be preferably made of soft rubber, so as to increase friction force between the anti-slip layer and the cable, and avoid deformation of a tangent plane of the cable due to too large clamping force, thereby making a detection result more accurate.

And the adjusting component is used for adjusting the distance of the clamping space. The first adjusting component comprises a first supporting plate 311, a two-way screw 312, a first knob 313 and a first guide rod 314. The first supporting plate 311 may be a concave structure with an opening pointing to the telecentric lens, and the extending direction is parallel to the horizontal plane. Two ends of the bidirectional screw rod 312 are rotatably mounted on two opposite sides of the inner wall of the first support plate 311 respectively, and two screw thread sections of the bidirectional screw rod 312 are in fit connection with the first threaded holes on the two clamping plates 32 respectively. One end of the bidirectional screw 312 can penetrate through the first support plate 311 and is fixedly connected with the first knob 313. Two ends of the first guide rod 314 are respectively fixed with two opposite sides of the inner wall of the first support plate 311. The first guide rod 314 is axially parallel to the bidirectional screw 312, and the first guide rod 314 passes through the through hole of the clamping plate 32 and is slidably connected with the clamping plate 32.

In the embodiment, when the clamping mechanism is adjusted, firstly, a cable to be tested is placed between the two clamping plates 32, the two-way screw rod 312 is driven to rotate by rotating the first knob 313, the two threaded ends of the two-way screw rod 312 are opposite in rotating direction, the two clamping plates 32 are respectively screwed at the two ends of the two-way screw rod 312, and meanwhile, the clamping plates 32 are limited to rotate by the first guide rods 314. Therefore, when the bidirectional screw 312 rotates, the two clamping plates 32 can be close to or far away from each other along the axial direction of the bidirectional screw 312, so that the distance of the clamping space can be adjusted, the cable to be tested can be clamped, and the tangent plane of the cable to be tested can be just positioned at the center of the clamping space. It should be noted here that the center of the clamping space is always fixed regardless of the change in the size of the gap between the clamping spaces, that is: the center of the clamping space is over against the vertical plane where the axis of the lens of the camera 1 is located, so that the tangent plane of the clamped cable is over against the vertical plane where the axis of the lens of the camera 1 is located, and the clamped cable to be tested is controlled to lift by adjusting the lifting mechanism, so that the tangent plane of the cable is over against the lens of the camera 1, and the tangent plane of the cable can be completely shot by the camera 1.

Referring to fig. 4, the lifting mechanism may be used to drive the clamping mechanism to vertically lift and lower so as to align the tangent plane of the cable with the telecentric lens of the camera 1. In this embodiment, the elevating mechanism may include: a mounting plate 41 and a second adjusting component.

The mounting plate 41 is used to mount the clamping mechanism. Specifically, the first support plate 311 of the clamping mechanism may be fixed on the mounting plate 41.

The adjusting assembly is used for adjusting the vertical height of the mounting plate 41 so as to make the center of the clamping space face the axial lead of the telecentric lens. The second adjusting component comprises a second supporting plate 421, a threaded rod 422, a lifting block 423, a second knob 424 and a second guide rod 425. The second support plate 421 is a concave structure with an opening pointing to the telecentric lens, and the extending direction is perpendicular to the horizontal plane. Two ends of the threaded rod 422 are rotatably mounted on two pairs of two sides of the inner wall of the second support plate 421 respectively, and the top of the threaded rod 422 penetrates through the second support plate 421 and is fixedly connected with the second knob 424. Two ends of the second guide rod 425 are respectively fixed with two opposite sides of the inner wall of the second support plate 421. The second guide rod 425 is axially parallel to the threaded rod 422. The lifting block 423 is provided with a second threaded hole and a second through hole. The lifting block 423 is in threaded connection with the threaded rod 422 through the second threaded hole, and the lifting block 423 is in sliding connection with the second guide rod 425 through the second through hole.

In this embodiment, when adjusting elevating system, drive threaded rod 422 through two 424 rotatory knobs and take place rotatoryly, because lifting block 423 and threaded rod 422 spiro union to lifting block 423 is restricted by two 425 guide bars again and is rotated, consequently when threaded rod 422 is rotatory, the height that lifting block 423 can change, thereby drive mounting panel 41 and fixture and go up and down, and then change the tangent plane height that is located the cable at centre of clamping space.

Referring to fig. 5, the ring-shaped light source 5 is used for illuminating the cut surface of the cable and protruding the edge of the cut surface of the cable. The annular light source 5 is arranged coaxially with the telecentric lens of the camera 1, and the inner diameter of the annular light source 5 is not smaller than the outer diameter of the telecentric lens.

The bracket assembly may include a first bracket 81, a second bracket 82, and a third bracket 83.

The first support 81 may be used to support the camera 1. The first support 81 may be fixedly mounted on the stage 6 by bolts, and the camera 1 may be fixedly mounted on the first support 81. When the camera 1 needs to be detached, the camera 1 may be directly detached from the first holder 81, or the first holder 81 may be detached from the stage 6.

The second support 82 may be used to support the ring light source 5. The second support 82 may be fixedly mounted on the stage 6 by bolts, and the ring light source 5 may be fixedly mounted on the second support 82. Specifically, one side of the second bracket 82 may be provided with a semicircular groove, a radius of the groove matches with an outer diameter of the annular light source 5, and the annular light source may be inserted into the groove to be fixed to the second bracket 82.

The third support 83 may be used to support the lifting mechanism, and the second support plate 421 of the lifting mechanism may be directly fixed on the carrier 6. In this embodiment, the cross section of the third support 83 may be a right triangle, one side of which may be fixed to the second support plate 421 by a bolt, and the other side of which may be fixed to the stage 6 by a bolt. Thus, the third support 83 functions as a reinforcing rib, so that the stability of the second support plate 421 is improved, and the structural strength of the whole lifting mechanism is improved.

The housing 7 may be used to house the stage 6 and various components mounted on the stage 6. The edge of the carrier 6 matches the bottom of the inner wall of the housing 7. The shell 7 can provide the confined environment for the main body 2 of the detection device, the camera 1 and other parts, has the protection effect, can also isolate most of outside air when avoiding physical collision, and avoids dust or vapor from damaging the detection device.

In summary, compare with prior art, the cable insulation thickness check out test set that this embodiment provided has following advantage:

1. this check out test set can carry out the centre gripping through fixture to the cable that awaits measuring fixed to can realize that the cable tangent plane that awaits measuring can be located the center department in centre gripping space just, no matter how the interval size in centre gripping space changes, its center is fixed all the time. Therefore, the requirements that the tangent plane of the clamped cable is just opposite to the vertical plane where the axial lead of the lens of the camera 1 is located are met, the clamped cable to be detected is controlled to lift through adjusting the lifting mechanism, the tangent plane of the cable is just opposite to the lens of the camera 1, the fact that the tangent plane of the cable is completely shot by the camera 1 can be guaranteed, and shot images obtained by the camera 1 are clearer and more complete.

2. One side of the clamping plate 32 of the detection device, which is close to the cable, can also be provided with an anti-slip layer, and the anti-slip layer can be preferably made of soft rubber, so that not only can the friction force between the anti-slip layer and the cable be increased, but also the deformation of a cable section caused by overlarge clamping force can be avoided, and the detection result is more accurate.

3. When the clamping mechanism of the detection device is used, the first rotary knob 313 can be used for driving the two-way screw rod 312 to rotate, the two thread ends of the two-way screw rod 312 are opposite in rotating direction, the two clamping plates 32 are respectively screwed at the two ends of the two-way screw rod 312, and meanwhile, the clamping plates 32 are limited to rotate by the first guide rods 314. Therefore, when the bidirectional screw 312 rotates, the two clamping plates 32 approach to or separate from each other along the axial direction of the bidirectional screw 312, so that the space of the clamping space can be adjusted to clamp the cable to be tested. Meanwhile, when the lifting mechanism is used, the rotary knob II 424 can be used for driving the threaded rod 422 to rotate, the lifting block 423 is in threaded connection with the threaded rod 422, and the lifting block 423 is limited to rotate by the guide rod II 425, so that when the threaded rod 422 rotates, the height of the lifting block 423 can be changed, the mounting plate 41 and the clamping mechanism are driven to lift, and the height of the tangent plane of the cable located in the center of the clamping space is changed. Clamping mechanism and elevating system can both realize comparatively accurate fine setting to have stronger stability.

4. This check out test set's annular light source 5 is the ring shape to the internal diameter of annular light source 5 is not less than the external diameter of telecentric mirror head, thereby can realize on the basis of the visual angle of the telecentric mirror head that does not shelter from camera 1, can also shine the tangent plane of cable and highlight the edge of cable tangent plane, makes the image of acquireing more clear accurate, and then makes the calculated result to the cable insulation layer more accurate. The carrying platform 6 and the bracket component of the detection equipment can be used for supporting the camera 1, the annular light source 5 and the lifting mechanism, so that the structural strength of the equipment is improved, and the stability is improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A cable insulation thickness detection apparatus, comprising:

a camera (1) for acquiring a shot image of the cable section;

a detection apparatus main body (2) for calculating the thickness of an insulating layer of the cable from the photographed image;

characterized in that, cable insulation thickness check out test set still includes:

a clamping mechanism for clamping the cable; and

the lifting mechanism is used for driving the clamping mechanism to vertically lift so as to enable the tangent plane of the cable to be opposite to the telecentric lens of the camera (1);

a stage (6) for fixing the camera (1), the detection apparatus main body (2), and the lifting mechanism;

a bracket assembly comprising a first bracket (81) and a third bracket (83); a first support (81) for supporting the camera (1); the first support (81) is arched, the bottom of the first support is fixedly arranged on the carrying platform (6), and the top of the first support is fixedly arranged with the camera (1); a third bracket (83) for supporting the lifting mechanism; the section of the third bracket (83) is of a right-angle bending type; and a right-angle side at one side of the third support (83) is fixedly connected with the carrying platform (6), and a right-angle side at the other side of the third support is fixedly connected with the lifting mechanism.

2. The cable insulation thickness detection apparatus according to claim 1, further comprising:

an annular light source (5) for illuminating a section of the cable and projecting the edge of the section of the cable; the annular light source (5) is coaxially arranged with a telecentric lens of the camera (1), and the inner diameter of the annular light source (5) is not smaller than the outer diameter of the telecentric lens; the annular light source (5) is fixedly arranged on the upper surface of the carrying platform (6).

3. The apparatus for detecting the thickness of an insulating layer of a cable according to claim 2, wherein the bracket assembly further comprises:

a second support (82) for supporting the ring-shaped light source (5); the bottom of the second bracket (82) is fixedly arranged on the carrying platform (6); the top of the second support (82) is provided with a semicircular groove matched with the outer edge of the annular light source (5), and the second support (82) is fixedly connected with the annular light source (5) through the semicircular groove.

4. The cable insulation thickness detection apparatus according to claim 1, wherein the clamping mechanism includes:

two clamping plates (32); a clamping space for clamping and fixing the cable is formed between the two clamping plates (32), and the center of the clamping space is positioned on the vertical plane where the telecentric lens is positioned; and

and the first adjusting assembly is used for adjusting the distance of the clamping space.

5. The cable insulation thickness detection device according to claim 4, wherein the first adjusting component comprises a first support plate (311), a bidirectional screw rod (312), a first knob (313) and a first guide rod (314); the first support plate (311) is a concave structure with an opening pointing to the telecentric lens, and the extension direction of the first support plate is parallel to the horizontal plane; two ends of the two-way screw rod (312) are respectively and rotatably arranged on two opposite sides of the inner wall of the first support plate (311), and the two-way screw rod (312) is respectively in threaded fit connection with the two clamping plates (32); one end of the bidirectional screw rod (312) penetrates through the first support plate (311) and is fixedly connected with the first knob (313); two ends of the first guide rod (314) are respectively fixed with two opposite sides of the inner wall of the first support plate (311); the axial direction of the first guide rod (314) is parallel to the bidirectional screw rod (312), and the first guide rod (314) is connected with the clamping plate (32) in a sliding mode.

6. The cable insulation thickness detection apparatus according to claim 1, wherein the lifting mechanism includes:

a mounting plate (41) for mounting the clamping mechanism; and

and the second adjusting assembly is used for adjusting the vertical height of the mounting plate (41).

7. The cable insulation thickness detection device of claim 6, wherein the second adjusting component comprises a second support plate (421), a threaded rod (422), a lifting block (423), a second knob (424) and a second guide rod (425); the second support plate (421) is a concave structure with an opening pointing to the telecentric lens, and the extension direction of the second support plate is vertical to the horizontal plane; two ends of the threaded rod (422) are rotatably mounted on two pairs of two sides of the inner wall of the second support plate (421), and the top of the threaded rod (422) penetrates through the second support plate (421) and is fixedly connected with the second knob (424); two ends of the second guide rod (425) are respectively fixed with two opposite sides of the inner wall of the second support plate (421); the axial direction of the second guide rod (425) is parallel to the threaded rod (422); the lifting block (423) is in threaded connection with the threaded rod (422), and the lifting block (423) is in sliding connection with the second guide rod (425).

8. The cable insulation thickness detection device according to claim 4, wherein the two opposite sides of the two clamping plates (32) are respectively provided with an anti-slip layer; the anti-slip layer is of a soft rubber structure.

9. The cable insulation thickness detection apparatus according to claim 2, further comprising:

a housing (7) for accommodating the camera (1), the inspection apparatus main body (2), the clamping mechanism, the lifting mechanism, the annular light source (5), the carrier (6), and the bracket assembly.

10. The cable insulation thickness detection apparatus according to claim 3, wherein the bottom portions of the first bracket (81) and the second bracket (82) are fixed to the stage (6) by bolts; the third support (83) is fixedly connected with the carrier (6) through a bolt.