Contact network residual voltage detection device

Abstract

The utility model discloses a residual voltage detection device for a contact network, and belongs to the technical field of power equipment. A contact network residual voltage detection device comprises a telescopic cylinder, a hook is installed on the telescopic cylinder, the device further comprises a take-up wheel used for winding a connecting cable, the take-up wheel is arranged on the telescopic cylinder, a rotating shaft is fixedly arranged on the side wall of the telescopic cylinder, one end, away from the telescopic cylinder, of the rotating shaft is rotatably connected with the take-up wheel, and the other end of the rotating shaft is connected with the hook. A handle for driving the take-up wheel to rotate is rotationally arranged on the take-up wheel; the telescopic cylinder is provided with a limiting assembly used for limiting rotation of the take-up wheel. The take-up wheel is rotatably arranged on the telescopic cylinder, when the telescopic rod extends, a connecting cable can be unwound by a certain length, winding of the connecting cable is avoided, after use, the connecting cable can be rewound on the take-up wheel to be conveniently used next time, and the connecting cable can be prevented from being damaged in the transferring process. Connection cables are wound and disordered, and the use experience is affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of power equipment especially relates to a catenary residual voltage detection device. BACKGROUND

[0002] The catenary is the high-voltage transmission line that is erected in the "" shape along the overhead of the steel rail and is used for the current collection of the pantograph in the electrified railway, and the catenary is the main framework of the electrified railway engineering and is the special form of the power transmission line that is erected overhead along the railway line and is used for the power supply of the electric locomotive.

[0003] Through the search, the patent with the Chinese patent application number 202123043471.5 discloses a catenary residual voltage detection device, the telescopic cylinder is a cylindrical structure, the telescopic cylinder is internally connected with a telescopic rod in a sliding mode, the upper side of the telescopic rod is connected with a hook, the side of the hook is provided with a fixed ring, the fixed ring is connected with a voltmeter and a grounding electrode through a connecting cable, the fixed ring is arranged on one side of the hook, and one end of the connecting cable is fixed through the fixed ring. The design greatly improves the convenience of fixing the connecting cable. The connecting cable is connected in series with the resistance with the resistance value of 1.75MΩ arranged in the voltmeter, so that the voltage transmitted through the hook is reduced to the voltage range of the voltmeter itself, the safety of the operator is improved after the voltage is measured correctly, and the telescopic rod is adjusted in the telescopic cylinder. The design can meet the detection needs of the cable voltage of different heights. The above-mentioned patent has the following disadvantages in actual use: after use, the connecting cable is not convenient to recycle, and the connecting cable is easy to wind and disorder during next use, which affects the use effect and is not convenient to carry. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the problem of inconvenient recycling of the connecting cable in the prior art and provides a catenary residual voltage detection device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A contact network residual voltage detection device, comprising a telescopic barrel, a hook is mounted on the telescopic barrel, and a take-up reel for winding a connecting cable is arranged on the telescopic barrel, wherein a rotating shaft is fixedly arranged on the side wall of the telescopic barrel, one end of the rotating shaft away from the telescopic barrel is rotationally connected with the take-up reel, and a handle for driving the take-up reel to rotate is rotationally arranged on the take-up reel; a limiting assembly for limiting rotation of the take-up reel is arranged on the telescopic barrel.

[0007] In order to prevent the take-up reel from rotating by itself and causing the connecting cable to slide off, preferably, the limiting assembly comprises a push rod slidingly arranged on the telescopic barrel, a limiting groove is formed in the telescopic barrel, a limiting plate is slidingly arranged in the limiting groove, one end of the push rod is fixedly connected with the limiting plate, the other end of the limiting plate is fixedly arranged with a limiting rod, and an elastic member is arranged in the limiting groove; a plurality of limiting holes are uniformly formed in the end face of the take-up reel close to the rotating shaft, and one end of the limiting rod away from the limiting plate is clampedly connected with the limiting hole.

[0008] In order to ensure that the limiting rod is always clampedly connected with the limiting hole under the action of no external force, further, the elastic member comprises a spring, and the spring is fixedly connected at both ends with the limiting groove and the limiting plate.

[0009] In order to facilitate the take-up reel to wind and prevent the connecting cable from swinging and being wound on the telescopic barrel, preferably, a wire guide ring is fixedly arranged on the side wall of the telescopic barrel, and a plurality of groups of wire guide rings are equidistantly arranged along the axis of the telescopic barrel.

[0010] Preferably, a telescopic rod is slidingly arranged in the telescopic barrel, a guide groove is formed in the telescopic rod, and one end of the hook is fixedly connected with the telescopic rod through an insulator.

[0011] Preferably, an "eight" shaped blocking rod is fixedly arranged on the inner wall of the hook.

[0012] Compared with the prior art, the contact network residual voltage detection device has the following beneficial effects:

[0013] 1、The contact network residual voltage detection device, by rotationally arranging a take-up reel on a telescopic barrel, when the telescopic rod is elongated, a connecting cable can be unwound to a certain length, winding of the connecting cable is avoided, after use, the connecting cable can be rewound on the take-up reel, next time use is facilitated, winding and disorder of the connecting cables during transfer are prevented, use experience is affected, and winding efficiency is improved.

[0014] 2. The overhead line residual voltage detection device, through the sliding setting of the limiting rod on the telescopic barrel, the uniform opening of the limiting hole on the take-up wheel, the take-up wheel can be fixed after the connection cable is fully stored or after the connection cable is pulled out a certain length from the take-up wheel, the connection cable can be prevented from sliding out of the take-up wheel, and the connection cable is prevented from being wound, and the use effect is affected.

[0015] The part not involved in the device is the same as or can be realized by the prior art, the telescopic rod can be put out a certain length of the connection cable when the telescopic rod is elongated, the connection cable is prevented from being wound, the connection cable can be wound on the take-up wheel after use, the next use is facilitated, the connection cable is prevented from being wound and disordered during transfer, and the use experience is affected. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A structure diagram of the overhead line residual voltage detection device is provided for the utility model Figure 1 ;

[0017] Figure 2 A structure diagram of the overhead line residual voltage detection device is provided for the utility model Figure 2 ;

[0018] Figure 3 A front view of the overhead line residual voltage detection device is provided for the utility model

[0019] Figure 4 An overhead line residual voltage detection device is provided for the utility model Figure 3 An enlarged view of part A of the overhead line residual voltage detection device.

[0020] In the figure: 1, telescopic barrel; 101, telescopic rod; 102, guide groove; 103, anti-skid sleeve; 104, limiting groove; 2, hook; 201, fixed end; 202, stop rod; 203, insulator; 3, take-up wheel; 301, handle; 302, rotating shaft; 303, limiting hole; 4, limiting plate; 401, limiting rod; 402, push rod; 403, spring; 5, wire ring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0022] In the description of the utility model, need understanding is, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicating or implying that the indicated device or element must have a particular orientation, a particular orientation structure and operation, therefore can not be understood as the limitation to the utility model.

[0023] Embodiment:

[0024] With reference to Figures 1-4The utility model provides a contact network residual voltage detection device, including telescopic cylinder 1, the hook 2 is installed on telescopic cylinder 1, wherein, we are slidably arranged telescopic rod 101 in telescopic cylinder 1, the screw rod is threadedly connected on telescopic cylinder 1, and the one end of screw rod is extended to the outer wall of telescopic rod 101 and is resisted, the length of telescopic rod 101 is adjusted, telescopic rod 101 is prevented from sliding after the length of telescopic rod 101 is adjusted, and normal use is influenced, the guide slot 102 is seted up on telescopic rod 101, and telescopic rod 101 is prevented from rotating and causes the connection cable to be wound on telescopic rod 101 while guaranteeing that telescopic rod 101 reliably slides along the axis of telescopic cylinder 1, influences normal use, the antiskid sleeve 103 is fixedly arranged at the one end of telescopic cylinder 1 away from telescopic rod 101, can improve the antiskid effect, and the material of antiskid sleeve 103 is selected as rubber or polyurethane, has certain insulation effect, improves the use safety, and the one end of hook 2 is fixedly connected with telescopic rod 101 through insulator 203, and the material of insulator 203 can be glass fiber reinforced plastic, ceramic or polymer material, here we select glass fiber reinforced plastic, can make hook 2 with the insulation effect between telescopic rod 101, help to improve the use safety. Further, in order to improve the use safety, the material of the winding wheel 3 is plastic or wood, preferably plastic, a rotating shaft 302 is fixedly arranged on the side wall of the telescopic cylinder 1, one end of the rotating shaft 302 away from the telescopic cylinder 1 is rotatably connected with the winding wheel 3, a handle 301 for driving the winding wheel 3 to rotate is rotatably arranged on the winding wheel 3, the handle 301 is eccentrically arranged, that is, the axis of the handle 301 does not coincide with the axis of the winding wheel 3, so as to facilitate driving the winding wheel 3 to rotate for winding, thereby improving the winding efficiency; a limiting assembly for limiting the rotation of the winding wheel 3 is arranged on the telescopic cylinder 1, the winding wheel 3 is fixed after the connection cable is fully wound or the connection cable is pulled out a certain length from the winding wheel 3, so as to prevent the connection cable from sliding out of the winding wheel 3, thereby improving the use experience.

[0025] In use, by rotating the winding wheel 3 on the telescopic barrel 1, when the telescopic rod 101 is extended, the connecting cable can be unwound to a certain length to avoid winding of the connecting cable, and after use, the connecting cable can be rewound on the winding wheel 3 for next use, which can prevent winding and disorder of the connecting cable during transfer, affect the use experience, and improve the winding efficiency; by slidingly arranging the limiting rod 401 on the telescopic barrel 1 and uniformly arranging the limiting holes 303 on the winding wheel 3, the winding wheel 3 can be fixed after the connecting cable is fully wound or after the connecting cable is pulled out to a certain length from the winding wheel 3, which can prevent the connecting cable from sliding out of the winding wheel 3 and winding to affect the use effect.

[0026] Referring to Figures 2-4 , the limiting assembly can fix the winding wheel 3 on the telescopic barrel 1 by screws, and here the limiting assembly is designed as: the push rod 402 is slidingly arranged on the telescopic barrel 1, the limiting groove 104 is arranged in the telescopic barrel 1, the limiting plate 4 is slidingly arranged in the limiting groove 104, the push rod 402 is fixedly connected with one end of the limiting plate 4, the limiting rod 401 is fixedly arranged at the other end of the limiting plate 4, and the elastic member for driving the limiting plate 4 to reset is arranged in the limiting groove 104; a plurality of limiting holes 303 are uniformly arranged on the end face of the winding wheel 3 close to the rotating shaft 302, the limiting holes 303 are arranged in four to sixteen groups, and here ten groups are preferred, and the end of the limiting rod 401 away from the limiting plate 4 is clamped and connected with the limiting hole 303. The elastic member can be an elastic steel plate, an elastic rubber or a common spring 403, and here the elastic member is preferably a compression spring 403, and the two ends of the spring 403 are fixedly connected with the limiting groove 104 and the limiting plate 4 respectively. In use, the limiting plate 4 can be separated from the limiting hole 303 with the limiting rod 401 by sliding the limiting plate 4 into the limiting groove 104 by the push rod 402, at least the winding or unwinding of the winding wheel 3 can be driven by the handle 301, and when the winding or unwinding is completed, the push rod 402 is released, the limiting plate 4 is reset under the elastic force of the spring 403, the limiting rod 401 slides into the limiting hole 303, the winding wheel 3 is fixed, and the use effect is improved.

[0027] Referring to Figures 1-3 , the wire guide ring 5 is fixedly arranged on the side wall of the telescopic barrel 1, a plurality of wire guide rings 5 are equidistantly arranged along the axis of the telescopic barrel 1, the wire guide ring 5 is arranged in two to ten groups, and here five groups are preferred, one end of the connecting cable is sequentially passed through the five wire guide rings 5 and then fixedly connected with the fixed end 201, in use, on the one hand, the shaking of the connecting cable can be reduced to avoid winding on the telescopic barrel 1, and on the other hand, the wire arrangement effect is good, the winding of the winding wheel 3 is facilitated, and the winding efficiency is improved.

[0028] Referring toFigures 1-3 A plurality of stop rods 202 are fixedly arranged on the inner wall of the hook 2, and the stop rods 202 are symmetrically arranged in two groups to form an "eight" shape structure. In use, the stop rods 202 are arranged in an "eight" shape on the inner wall of the hook 2, so that when the hook 2 is hung on the cable, the hook 2 can be prevented from swinging and then falling off the cable under the blowing of the wind, thereby affecting normal use.

[0029] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, and all of them should be covered within the protection scope of the present application.

Claims

1. A catenary residual voltage detection device, comprising a telescopic cylinder (1), a hook (2) is installed on the telescopic cylinder (1), characterized in that, Also include: A take-up wheel (3) for winding the connecting cable is arranged on the telescopic barrel (1), Wherein, the telescopic barrel (1) side wall is fixedly provided with a rotating shaft (302), one end of the rotating shaft (302) away from the telescopic barrel (1) is rotatably connected with the take-up wheel (3), and the take-up wheel (3) is rotatably provided with a handle (301) for driving the take-up wheel (3) to rotate; The telescopic barrel (1) is provided with a limiting assembly for limiting the rotation of the take-up wheel (3).

2. The device according to claim 1, characterized in that, The limiting assembly comprises: A push rod (402) slidingly arranged on the telescopic barrel (1), Wherein, the telescopic barrel (1) is provided with a limiting slot (104), the limiting slot (104) is slidingly provided with a limiting plate (4), one end of the push rod (402) is fixedly connected with the limiting plate (4), and the other end of the limiting plate (4) is fixedly provided with a limiting rod (401), and the limiting slot (104) is provided with an elastic member; The end surface of the take-up wheel (3) close to the rotating shaft (302) is uniformly provided with a plurality of limiting holes (303), and one end of the limiting rod (401) away from the limiting plate (4) is connected with the limiting hole (303).

3. The device according to claim 2, characterized in that, The elastic member comprises a spring (403), and the spring (403) is fixedly connected with the limiting slot (104) and the limiting plate (4) at both ends.

4. The device according to claim 1, characterized in that, The telescopic barrel (1) side wall is fixedly provided with a wire guide ring (5), and the wire guide ring (5) is equidistantly provided with a plurality of groups along the axis of the telescopic barrel (1).

5. The device according to claim 1, characterized in that, The telescopic barrel (1) is slidingly provided with a telescopic rod (101), the telescopic rod (101) is provided with a guide slot (102), and one end of the hook (2) is fixedly connected with the telescopic rod (101) through an insulator (203).

6. The device according to claim 1, characterized in that, The inner wall of the hook (2) is fixedly provided with a "eight" shaped blocking rod (202).

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