CN110686583A - Live working caliper for aerial cable - Google Patents
Live working caliper for aerial cable Download PDFInfo
- Publication number
- CN110686583A CN110686583A CN201910823212.2A CN201910823212A CN110686583A CN 110686583 A CN110686583 A CN 110686583A CN 201910823212 A CN201910823212 A CN 201910823212A CN 110686583 A CN110686583 A CN 110686583A
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- support
- rod
- vertical
- caliper
- diameter measuring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
- G01B5/0004—Supports
Abstract
The invention discloses a live working diameter gauge for an overhead cable, and aims to provide a live working diameter gauge for an overhead cable, which can directly measure the diameter of the overhead cable and has good measurement accuracy, so that the live working diameter gauge for the overhead cable is prepared in the early stage for power rush-repair construction. The device comprises a vertical supporting rod, wherein an upper limit block, a middle limit block and a lower limit block are arranged on the outer side surface of the vertical supporting rod, and scale marks are arranged on the outer side surface of the vertical supporting rod; the floating type positioning reference device comprises a floating sleeve arranged on the supporting vertical rod in a sliding manner and a reference positioning rod arranged on the floating sleeve and vertical to the supporting vertical rod; the self-adaptive diameter measuring device comprises a diameter measuring sliding sleeve, a support, a diameter measuring rod, a photographing device and a trigger switch, wherein the diameter measuring sliding sleeve is arranged on a support vertical rod in a sliding mode, the support is arranged on the diameter measuring sliding sleeve, the diameter measuring rod is positioned above the support and is parallel to a reference positioning rod, the photographing device is arranged on the diameter measuring sliding sleeve or the support, and the trigger switch is arranged on the support.
Description
Technical Field
The invention relates to a diameter measuring device, in particular to a live working diameter measuring device for an overhead cable.
Background
The construction of electrical power rush-repair needs a large amount of preparation work in earlier stage, wherein the site investigation work is just one of the preparation work in earlier stage of electrical power rush-repair construction, wire model, specification etc. that need make clear and definite circuit when the site investigation. Because the field investigation work is only the preliminary preparation work, the reconnaissance personnel can not power off the line and climb onto the electric pole to measure the type, the specification and the like of the lead, so that the type and the specification of the lead of the line are determined by the field investigation at present, the type and the specification of the lead in the air are generally checked by naked eyes, the type and the specification of the lead are judged by experience, and the error rate of the empirical judgment is high.
Further, in order to improve this problem, some inventors have invented an overhead wire caliper, such as that disclosed under publication No. CN207850248U, entitled overhead wire caliper, which includes an insulating rod; vernier caliper, vernier caliper includes the main scale, slide and set up vernier slide and the outer diameter measurement structure on the main scale, outer diameter measurement structure is including setting up the outer measuring claw of deciding and setting up the outer measuring claw of moving on vernier slide on the main scale, the side of deciding outer measuring claw of outer measuring claw is for deciding the datum plane towards moving, the side of deciding outer measuring claw of outer measuring claw is including moving datum plane and direction inclined plane towards deciding, the interval between direction inclined plane and the datum plane is by deciding the root of outer measuring claw towards deciding the tip direction of outer measuring claw gradually. When the device is used, a vernier caliper is placed above an overhead wire to be measured; then moving the vernier caliper downwards to enable the lead to be clamped between the fixed reference surface and the guide inclined surface; and finally, the surveyor moves the vernier caliper upwards through the insulating rod to separate the vernier caliper from the wire, and takes down the cable outer diameter dimension measured by the observation vernier caliper. Although this application can directly carry out the calliper to the electrified wire in earth's surface high altitude, nevertheless because it adopts reconnaissance personnel to pass through the insulator spindle and drives slide caliper and continue slow moving down, will move outer measuring jaw through the wire and strut, in order to realize the calliper to the cable, need reconnaissance personnel to operate meticulously at this in-process, slide caliper's measuring jaw can not incline (two measuring jaws place plane need keep the vertical state with the wire), otherwise slide caliper measured cable external diameter size will be bigger partially, and reconnaissance personnel when the operation of earth's surface, often difficult assurance slide caliper's measuring jaw's state, therefore the high altitude wire calliper device of this application is in practical application, it is not good to the measurement accuracy of cable external diameter size.
Disclosure of Invention
The invention aims to provide a live working caliper for an overhead cable, which can directly measure the diameter of the overhead cable and has good measurement accuracy, thereby being prepared for the power first-stage repair construction.
The technical scheme of the invention is as follows:
a live working caliper for an overhead cable comprising: the outer side surface of the vertical supporting rod is provided with a scale mark extending along the length direction of the vertical supporting rod, and the scale mark is positioned between the middle limiting block and the lower limiting block; the floating type positioning reference device comprises a floating sleeve which is arranged on the vertical supporting rod in a sliding mode and is positioned between the upper limiting block and the middle limiting block, and a reference positioning rod which is arranged on the floating sleeve and is perpendicular to the vertical supporting rod, wherein an upper sealing ring and a lower sealing ring are arranged on the inner side surface of the floating sleeve; the self-adaptive diameter measuring device comprises a diameter measuring sliding sleeve which is arranged on a support vertical rod in a sliding way and is positioned between a middle limiting block and a lower limiting block, a support which is arranged on the diameter measuring sliding sleeve, a diameter measuring rod which is arranged above the support and is parallel to a reference positioning rod, a photographing device which is arranged on the diameter measuring sliding sleeve or the support, a trigger switch which is arranged on the support, a vertical cylinder body which is positioned below the support, a connecting piece which connects the vertical cylinder body and the support vertical rod, a piston which is arranged in the vertical cylinder body in a sliding way, a compression spring which is arranged in the vertical cylinder body and is positioned below the piston, a piston rod which is connected with the piston, an air guide channel which is arranged in the support vertical rod, an air exhaust port and a vertical rod interface which are arranged on the outer side surface of the support vertical rod and are communicated with the air guide channel, the upper end of piston rod is located the top of vertical cylinder body, and the upper end of piston rod is connected with the support, the gas vent is located between spacing piece and the well stopper, the montant interface is located the below of spacing piece down, be equipped with on the support and support the direction through-hole that the montant paralleled, be equipped with vertical guide arm on the calliper pole, vertical guide arm slides and sets up in the direction through-hole, and vertical guide arm is last and be located the support below and be equipped with the guide arm stopper, and vertical guide arm is last and be located and be equipped with reset spring between support and the calliper pole, be equipped with locating piece and trigger piece to one side of support on the.
The live working caliper for the overhead cable in the scheme is specifically used as follows:
firstly, moving the floating sleeve upwards and abutting against an upper limiting block so that an exhaust port is positioned below a lower sealing ring; then, the diameter measuring sliding sleeve is moved downwards to enable the diameter measuring sliding sleeve to abut against the lower limiting block, in the process, the piston overcomes the elasticity of the compression spring and moves downwards, and outside air enters the vertical cylinder body through the air outlet, the connecting pipe and the air guide channel; then, moving the floating sleeve downwards and abutting against the middle limiting block to enable the air outlet to be located between the upper sealing ring and the lower sealing ring, then releasing the diameter measuring sliding sleeve by a surveyor, at the moment, releasing the diameter measuring sliding sleeve by the surveyor due to the fact that the air outlet is sealed, and keeping the piston moving (the piston cannot move upwards under the action of the elastic force of the compression spring), so that the reference positioning rod and the diameter measuring rod keep the maximum distance;
secondly, the surveyor holds the supporting vertical rod in the ground by hand, lifts the live-line work caliper, and places the aerial cable between the reference positioning rod and the caliper measuring rod;
then, the surveying staff holds the supporting vertical rod, hangs the reference positioning rod on the overhead cable, and enables the supporting vertical rod to be approximately in a vertical state, and at the moment, the supporting vertical rod moves downwards under the action of self gravity until the floating sleeve moves on the upper limiting block;
when the floating sleeve moves on the upper limiting block, the exhaust port is positioned below the lower sealing ring, so that the inner cavity of the vertical cylinder body is communicated with the outside through the connecting pipe, the air guide channel and the exhaust port, and the piston moves upwards under the action of the elastic force of the compression spring, so that the self-adaptive diameter measuring device is driven to move upwards together;
when the positioning block abuts against the support, the trigger piece triggers the trigger switch to enable the photographing device to photograph towards the scale marks and the diameter measuring sliding sleeve, so that the positions of the scale marks corresponding to the reference positioning rod and the diameter measuring rod in the state are recorded, and the outer diameter of the overhead cable is measured;
thirdly, the reconnaissance personnel hold the supporting vertical rod on the ground by hands, move the aerial cable to the outer sides of the reference positioning rod and the diameter measuring rod, and then obtain the outer diameter of the aerial cable from the picture of the photographing device;
in the specific use process of the live working diameter measuring device for the aerial cable, a surveyor holds the supporting vertical rod on the ground by hand, and only the aerial cable needs to be arranged between the reference positioning rod and the diameter measuring rod when the diameter of the aerial cable is measured; then, the reconnaissance personnel grip the support montant, hang the benchmark locating lever on aerial [ insulated ] cable to make the support montant roughly be in vertical state can, its convenient operation need not meticulous operation, can be accurate record aerial [ insulated ] cable's external diameter, therefore the live working calliper that is used for aerial [ insulated ] cable in this scheme not only can directly carry out the calliper to aerial [ insulated ] cable, and it is good to measure the accuracy moreover, thereby accurate reconnaissance wire model and specification, make the preparation in earlier stage for the electrical power rush-repair construction.
Preferably, when the positioning block abuts against the support, the trigger piece triggers the trigger switch so that the photographing device photographs towards the scale marks and the diameter measuring sliding sleeve.
Preferably, when the floating sleeve abuts against the middle limiting block, the exhaust port is located between the upper sealing ring and the lower sealing ring, and when the floating sleeve abuts against the upper limiting block, the exhaust port is located below the lower sealing ring.
Preferably, when the positioning block abuts against the bracket, the upper surface of the diameter measuring rod is flush with the upper surface of the diameter measuring sliding sleeve. So, can compare with the scale mark line through the upper surface of callipers sliding sleeve and judge aerial [ insulated ] cable's external diameter, be favorable to the reconnaissance personnel through the photo of the device of shooing. And judging the outer diameter of the overhead cable in Ali.
Preferably, the outer side of the supporting vertical rod is provided with a strip-shaped protrusion extending along the length direction of the supporting vertical rod, and the inner side surface of the floating sleeve is provided with a guide groove matched with the strip-shaped protrusion.
Preferably, the photographing device and the support are positioned on two opposite sides of the diameter measuring sliding sleeve. Therefore, the camera can be prevented from being interfered by parts such as the support and the like.
Preferably, one side of the bracket, which faces the diameter measuring rod, is provided with an installation groove, and the trigger switch is arranged in the installation groove.
Preferably, the photographing device is a camera.
Preferably, the vertical supporting rod is an insulating rod.
The invention has the beneficial effects that: not only can directly carry out the calliper to aerial [ insulated ] cable, it is good to measure the accuracy moreover to accurate reconnaissance wire model and specification make earlier stage preparation for the electrical power rush-repair construction.
Drawings
Fig. 1 is a schematic diagram of a live working caliper for an overhead cable according to the present invention.
In the figure:
the device comprises a supporting vertical rod 1, an upper limit block 1.1, a middle limit block 1.2 and a lower limit block 1.3;
the device comprises a floating type positioning reference device 2, a floating sleeve 2.1, a reference positioning rod 2.2, an upper sealing ring 2.3, a lower sealing ring 2.4, a strip-shaped bulge 2.5 and a guide groove 2.6;
the device comprises a self-adaptive diameter measuring device 3, a diameter measuring sliding sleeve 3.1, a photographing device 3.2, a support 3.3, a diameter measuring rod 3.4, a vertical guide rod 3.5, a guide rod limiting block 3.6, a reset spring 3.7, a positioning block 3.8, a trigger piece 3.9, a trigger switch 3.10, a vertical cylinder body 3.11, a piston 3.12, a compression spring 3.13, a piston rod 3.14, an air guide channel 3.15, an air outlet 3.16, a vertical rod interface 3.17, a cylinder body interface 3.18 and a connecting pipe 3.19.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present scheme, and are not construed as limiting the scheme of the present invention.
These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited thereby. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections, either mechanical or electrical, or communicating with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows: as shown in fig. 1, a live working caliper for an overhead cable comprises a support vertical rod 1, a floating type positioning reference device 2 and an adaptive caliper 3.
The outer side surface of the supporting vertical rod 1 is provided with an upper limiting block 1.1, a middle limiting block 1.2 and a lower limiting block 1.3, and the upper limiting block, the middle limiting block and the lower limiting block are sequentially distributed from top to bottom. The vertical supporting rods are insulating rods. The scale marks extending along the length direction of the supporting vertical rod are arranged on the outer side surface of the supporting vertical rod, and the scale marks are located between the middle limiting block and the lower limiting block.
The floating type positioning reference device 2 comprises a floating sleeve 2.1 which is arranged on the supporting vertical rod in a sliding mode and located between the upper limiting block and the middle limiting block, and a reference positioning rod 2.2 which is arranged on the floating sleeve and perpendicular to the supporting vertical rod. An upper sealing ring 2.3 and a lower sealing ring 2.4 are arranged on the inner side surface of the floating sleeve. In this embodiment, be equipped with on the outside of supporting the montant along the protruding 2.5 of bar that extend of length direction of supporting the montant, be equipped with on the inboard face of cover float with the protruding complex guide way 2.6 of bar, the bar is protruding to stretch into in the guide way.
The self-adaptive diameter measuring device 3 comprises a diameter measuring sliding sleeve 3.1 which is arranged on the supporting vertical rod in a sliding way and is positioned between the middle limiting block and the lower limiting block, a bracket 3.3 which is arranged on the diameter measuring sliding sleeve, a diameter measuring rod 3.4 which is positioned above the bracket and is parallel to the reference positioning rod, a photographing device 3.2 which is arranged on the diameter measuring sliding sleeve, a trigger switch 3.10 which is arranged on the bracket, a vertical cylinder body 3.11 which is positioned below the bracket, and a connecting piece which connects the vertical cylinder body and the supporting vertical rod, the piston 3.12 that the slip set up in vertical cylinder body, set up in vertical cylinder body and lie in the compression spring 3.13 of piston below, the piston rod 3.14 that is connected with the piston, the air duct 3.15 of setting in supporting the montant, set up on supporting the montant lateral surface and with air duct intercommunication's gas vent 3.16 and montant interface 3.17, set up cylinder body interface 3.18 on the up end of vertical cylinder body and connect the montant interface and the connecting pipe 3.19 of cylinder body interface. The upper end of the piston rod is positioned above the vertical cylinder body. The upper end of the piston rod is connected with the bracket. The exhaust port is positioned between the upper limit block and the middle limit block. The vertical rod interface is positioned below the lower limiting block.
In the embodiment, the photographing device is a camera, the diameter measuring sliding sleeve is provided with a mounting frame, and the photographing device is mounted on the mounting frame; the trigger switch is a push switch.
The support is provided with a guide through hole parallel to the support vertical rod. The diameter measuring rod is provided with a vertical guide rod 3.5. The vertical guide rod is arranged in the guide through hole in a sliding mode, the guide rod limiting block 3.6 is arranged on the vertical guide rod and below the support, the reset spring 3.7 is arranged on the vertical guide rod and between the support and the diameter measuring rod, and the support vertical rod moves upwards along the guide through hole under the action of the reset spring until the guide rod limiting block abuts against the support.
One side of the diameter measuring rod facing the bracket is provided with a positioning block 3.8 and a trigger piece 3.9. When the locating block supports on the support, trigger piece triggers trigger switch to make the device of shooing shoot towards scale mark and calibrating sliding sleeve.
When the floating sleeve is abutted to the middle limiting block, the exhaust port is located between the upper sealing ring and the lower sealing ring. When the floating sleeve abuts against the upper limiting block, the exhaust port is located below the lower sealing ring.
The live working caliper for the overhead cable in the scheme is specifically used as follows:
firstly, moving the floating sleeve upwards and abutting against an upper limiting block so that an exhaust port is positioned below a lower sealing ring; then, the diameter measuring sliding sleeve is moved downwards to enable the diameter measuring sliding sleeve to abut against the lower limiting block, in the process, the piston overcomes the elasticity of the compression spring and moves downwards, and outside air enters the vertical cylinder body through the air outlet, the connecting pipe and the air guide channel; then, moving the floating sleeve downwards and abutting against the middle limiting block to enable the air outlet to be located between the upper sealing ring and the lower sealing ring, then releasing the diameter measuring sliding sleeve by a surveyor, at the moment, releasing the diameter measuring sliding sleeve by the surveyor due to the fact that the air outlet is sealed, and keeping the piston moving (the piston cannot move upwards under the action of the elastic force of the compression spring), so that the reference positioning rod and the diameter measuring rod keep the maximum distance;
secondly, the surveyor holds the supporting vertical rod in the ground by hand, lifts the live-line work caliper, and places the aerial cable between the reference positioning rod and the caliper measuring rod;
then, the surveying staff holds the supporting vertical rod, hangs the reference positioning rod on the overhead cable, and enables the supporting vertical rod to be approximately in a vertical state, and at the moment, the supporting vertical rod moves downwards under the action of self gravity until the floating sleeve moves on the upper limiting block;
when the floating sleeve moves on the upper limiting block, the exhaust port is positioned below the lower sealing ring, so that the inner cavity of the vertical cylinder body is communicated with the outside through the connecting pipe, the air guide channel and the exhaust port, and the piston moves upwards under the action of the elastic force of the compression spring, so that the self-adaptive diameter measuring device is driven to move upwards together;
when the positioning block abuts against the support, the trigger piece triggers the trigger switch to enable the photographing device to photograph towards the scale marks and the diameter measuring sliding sleeve, so that the positions of the scale marks corresponding to the reference positioning rod and the diameter measuring rod in the state are recorded, and the outer diameter of the overhead cable is measured;
thirdly, the reconnaissance personnel hold the supporting vertical rod on the ground by hands, move the aerial cable to the outer sides of the reference positioning rod and the diameter measuring rod, and then obtain the outer diameter of the aerial cable from the picture of the photographing device;
in the specific use process of the live working diameter measuring device for the aerial cable, a surveyor holds the supporting vertical rod on the ground by hand, and only the aerial cable needs to be arranged between the reference positioning rod and the diameter measuring rod when the diameter of the aerial cable is measured; then, the reconnaissance personnel grip the support montant, hang the benchmark locating lever on aerial [ insulated ] cable to make the support montant roughly be in vertical state can, its convenient operation need not meticulous operation, can be accurate record aerial [ insulated ] cable's external diameter, therefore the live working calliper that is used for aerial [ insulated ] cable in this scheme not only can directly carry out the calliper to aerial [ insulated ] cable, and it is good to measure the accuracy moreover, thereby accurate reconnaissance wire model and specification, make the preparation in earlier stage for the electrical power rush-repair construction.
Further, when the locating block supports on the support, the upper surface of sizing rod and the upper surface of sizing sliding sleeve flush. So, can compare with the scale mark line through the upper surface of callipers sliding sleeve and judge aerial [ insulated ] cable's external diameter, be favorable to the reconnaissance personnel through the photo of the device of shooing. And judging the outer diameter of the overhead cable in Ali.
In this embodiment, when the cover that floats supports on last stopper, the upper surface of benchmark locating lever aligns with zero scale mark on the scale mark. So, when the reconnaissance personnel judged aerial cable's external diameter through the photo of the device of shooing, the external diameter that can directly judge aerial cable through the upper surface and the scale mark contrast of calliper sliding sleeve.
Further, the photographing device and the support are located on two opposite sides of the diameter measuring sliding sleeve. Therefore, the camera can be prevented from being interfered by parts such as the support and the like.
Furthermore, one side of the support facing the diameter measuring rod is provided with an installation groove, and the trigger switch is arranged in the installation groove.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (9)
1. A live working caliper for an overhead cable, comprising:
the outer side surface of the vertical supporting rod is provided with a scale mark extending along the length direction of the vertical supporting rod, and the scale mark is positioned between the middle limiting block and the lower limiting block;
the floating type positioning reference device comprises a floating sleeve which is arranged on the vertical supporting rod in a sliding mode and is positioned between the upper limiting block and the middle limiting block, and a reference positioning rod which is arranged on the floating sleeve and is perpendicular to the vertical supporting rod, wherein an upper sealing ring and a lower sealing ring are arranged on the inner side surface of the floating sleeve;
the self-adaptive diameter measuring device comprises a diameter measuring sliding sleeve which is arranged on a support vertical rod in a sliding way and is positioned between a middle limiting block and a lower limiting block, a support which is arranged on the diameter measuring sliding sleeve, a diameter measuring rod which is arranged above the support and is parallel to a reference positioning rod, a photographing device which is arranged on the diameter measuring sliding sleeve or the support, a trigger switch which is arranged on the support, a vertical cylinder body which is positioned below the support, a connecting piece which connects the vertical cylinder body and the support vertical rod, a piston which is arranged in the vertical cylinder body in a sliding way, a compression spring which is arranged in the vertical cylinder body and is positioned below the piston, a piston rod which is connected with the piston, an air guide channel which is arranged in the support vertical rod, an air exhaust port and a vertical rod interface which are arranged on the outer side surface of the support vertical rod and are communicated with the air guide channel, the upper end of piston rod is located the top of vertical cylinder body, and the upper end of piston rod is connected with the support, the gas vent is located between spacing piece and the well stopper, the montant interface is located the below of spacing piece down, be equipped with on the support and support the direction through-hole that the montant paralleled, be equipped with vertical guide arm on the calliper pole, vertical guide arm slides and sets up in the direction through-hole, and vertical guide arm is last and be located the support below and be equipped with the guide arm stopper, and vertical guide arm is last and be located and be equipped with reset spring between support and the calliper pole, be equipped with locating piece and trigger piece to one side of support on the.
2. The live-working caliper for an overhead cable of claim 1, wherein when the positioning block abuts against the bracket, the trigger triggers the trigger switch to allow the photographing device to photograph toward the graduation marks and the caliper sleeve.
3. The live-working caliper for an overhead cable of claim 1, wherein the air vent is positioned between the upper seal ring and the lower seal ring when the floating sleeve abuts the middle stopper, and the air vent is positioned below the lower seal ring when the floating sleeve abuts the upper stopper.
4. A live working caliper for aerial cables according to claim 1, 2 or 3 wherein the upper surface of the caliper bar is flush with the upper surface of the caliper slide when the positioning block is resting on the support.
5. The live-wire work diameter gauge for the overhead cable according to claim 1, 2 or 3, wherein a strip-shaped protrusion extending along the length direction of the supporting vertical rod is arranged on the outer side of the supporting vertical rod, and a guide groove matched with the strip-shaped protrusion is arranged on the inner side surface of the floating sleeve.
6. A live working caliper for an aerial cable according to claim 1, 2 or 3 wherein the camera means and the support are located on opposite sides of the caliper slide.
7. The live-working caliper for aerial cables according to claim 1, 2 or 3, wherein a mounting groove is formed on one side of the bracket facing the caliper bar, and the trigger switch is disposed in the mounting groove.
8. A live working caliper for an aerial cable according to claim 1, 2 or 3 wherein the camera means is a camera.
9. A live working caliper for aerial cables according to claim 1, 2 or 3, wherein said vertical support posts are insulating posts.
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| CN201910823212.2A CN110686583B (en) | 2019-09-02 | 2019-09-02 | Live working caliper for aerial cable |
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| CN201910823212.2A CN110686583B (en) | 2019-09-02 | 2019-09-02 | Live working caliper for aerial cable |
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| 徐凤乾，江伟俊: "配网带电导线绝缘测径杆研究与应用", 《城市建设理论研究(电子版)》 * |
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| CN110686583B (en) | 2021-06-08 |
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