Load maintenance cabinet

Abstract

The utility model is suitable for the technical field of rail transit direct current cabinets, and provides a load maintenance cabinet which comprises a cabinet body. The mounting plate is fixedly mounted in the cabinet body; the isolating switch is assembled on the mounting plate; the direct current contactor is mounted on the mounting plate; the cabinet door is hinged to the cabinet body; and the illumination mechanism is arranged in the cabinet body and is used for illuminating the interior of the cabinet body. The load maintenance cabinet provided by the scheme has the advantages that the probability of on-load opening and closing of the isolating switch in the cabinet body can be reduced, the safety of line maintenance is greatly improved, and the service life of the isolating switch is greatly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rail transit DC cabinet technical field, especially relates to a load maintenance cabinet. BACKGROUND

[0002] With the popularization of urban rail transit, people are more and more fond of rail transit travel, and the application of DC cabinet will be more and more widely, the maintenance switch cabinet in the traditional DC switch cabinet is mainly through the disconnecting switch to connect the contact rail contact net and the negative pole, to ensure the safety of the maintenance circuit without electricity, but there is no protection measure for the electrification of the feeding direction, and there is a risk of closing with load. INVENTION CONTENTS

[0003] The utility model provides a load maintenance cabinet, aims at solving the problem of the risk of closing with load for the feeding direction of the currently used load maintenance cabinet proposed in the above background art.

[0004] In order to solve the above problems, the utility model is realized in this way, a load maintenance cabinet, comprising: cabinet body, mounting plate fixedly installed in the cabinet body, disconnecting switch assembled on the mounting plate, DC contactor installed on the mounting plate, cabinet door hinged on the cabinet body, lighting mechanism arranged in the cabinet body for illuminating the inside of the cabinet body.

[0005] Preferably, the inner wall of the cabinet body is fixedly installed with a temperature sensor on one side, the top of the cabinet body is provided with a mounting port, a heat dissipation fan is fixedly installed in the mounting port, and the top of the cabinet body is provided with a connecting box which is covered on the heat dissipation fan.

[0006] Preferably, a group of U-shaped plates are fixedly installed on the top of the cabinet body, a group of dustproof nets are fixedly installed on the inner wall top of the connecting box, a group of the dustproof nets are respectively connected with a group of the U-shaped plates in sliding mode, and a waterproof film is assembled in the connecting box.

[0007] Preferably, the cabinet body and the connecting box are both fixedly installed with a link plate on one side, the two link plates are in contact, a link rod is slidably installed on the two link plates, a clamping block is rotatably installed on any link plate, and the clamping block is in rotatable contact with the link rod.

[0008] Preferably, the lighting mechanism comprises a connecting rod, a sliding block, a goose neck pipe and a lighting lamp, the connecting rod is fixedly installed in the cabinet body, the sliding block is slidably installed on the connecting rod, the goose neck pipe is fixedly installed on one side of the sliding block, and the lighting lamp is assembled on one end of the goose neck pipe.

[0009] Preferably, an arc-shaped groove is formed in one side of the connecting rod, a limiting frame is rotatably installed on one side of the sliding block, and the output rod of the limiting frame is slidably connected with the sliding block and the arc-shaped groove.

[0010] Preferably, a side of the cabinet is provided with a heat dissipation opening, and a heat dissipation plate is detachably installed in the heat dissipation opening.

[0011] Compared with the related art, the load maintenance cabinet has the following advantages:

[0012] 1. The DC contactor is arranged, so that the probability of the isolation switch in the cabinet being switched on or off with load is reduced, the safety of line maintenance and the service life of the isolation switch are greatly improved, the failure rate during long-term operation and the maintenance workload are greatly reduced, the temperature sensor is used to monitor the temperature in the cabinet, so that subsequent heat dissipation treatment of the electrical devices in the cabinet is facilitated, and the heat dissipation fan is used to dissipate heat of the equipment, so that the temperature in the cabinet is not too high, and the safe operation of the cabinet is facilitated.

[0013] 2. The dustproof net and the waterproof film are used in combination, so that water vapor and dust can be effectively prevented from entering the cabinet, the waterproof and dustproof effect is good, the clamping block is used to limit the connecting rod, so that the connecting box is prevented from being separated from the cabinet, the limiting effect is good, and the operation is convenient, and the lighting mechanism is arranged, so that the cabinet is illuminated, and subsequent maintenance of the equipment in the cabinet is facilitated.

[0014] 3. The limiting frame is used to position the sliding block, so that the position of the illuminating lamp is adjusted, and subsequent illumination of different equipment in the cabinet is facilitated.

[0015] Compared with the prior art, the load maintenance cabinet can reduce the probability of the isolation switch in the cabinet being switched on or off with load, and greatly improve the safety of line maintenance and the service life of the isolation switch. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a front view structural schematic diagram of the load maintenance cabinet provided by the utility model;

[0017] Figure 2 is a front view structural schematic diagram of the load maintenance cabinet provided by the utility model;

[0018] Figure 3 is an enlarged structural schematic diagram of the A part shown in Figure 2

[0019] Figure 4 is a structural block diagram of the DC contactor and the isolation switch in the utility model.

[0020] ​Fig. 1 is a cabinet body; 2 is a mounting plate; 3 is a disconnecting switch; 4 is a DC contactor; 5 is a cabinet door; 6 is a temperature sensor; 7 is a cooling fan; 8 is a connecting box; 9 is a U-shaped plate; 10 is a dust screen; 11 is a waterproof film; 12 is a connecting plate; 13 is a connecting rod; 14 is a clamping block; 15 is a connecting rod; 16 is a sliding block; 17 is a gooseneck tube; 18 is an illuminating lamp; 19 is a limiting frame; 20 is a cooling plate. DETAILED DESCRIPTION

[0021] Unless otherwise defined, 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 belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application; the present application will be described with reference to the drawings in which is shown by way of illustration the application in accordance with embodiments described herein in which: the terms "comprise", "comprising", "include", "including", "have" and "having" and any variations thereof are intended to cover a non-exclusive inclusion; the terms "first", "second", and the like in the description do not necessarily have an ordinal number meaning but are used for the purpose of nomenclature only; the terms "inner", "outer", "left", "right", and the like, if used, indicate directions in the drawings to which reference is made and are for purposes of illustration and description only and are not intended to be limiting, and do not limit the position, location and / or orientation of the apparatus and / or components thereof in any manner; the terms "front", "back", "rear", "upper", "lower", and the like, if used, are used for purposes of illustration and description and are not intended to be limiting, and do not limit the position, location and / or orientation of the apparatus and / or components thereof in any manner.

[0022] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same embodiment, or to a common embodiment.

[0023] The utility model discloses an embodiment provides a kind of load maintenance cabinet, as shown in Figures 1-4 The load maintenance cabinet includes: cabinet body 1;Fixed mounting plate 2 in the cabinet body 1;Disconnecting switch 3 is assembled on the mounting plate 2;DC contactor 4 is installed on the mounting plate 2;Cabinet door 5 is hinged on the cabinet body 1;Lighting mechanism is arranged in the cabinet body 1 for illuminating the inside of cabinet body 1.

[0024] In the embodiment, the cabinet 1 adopts the scheme of connecting the grounding isolating switch 3 and the DC contactor 4 in series, and the difference from the traditional maintenance cabinet is that a DC contactor 4 is connected in series in the primary circuit for breaking the load, and the isolating switch 3 in the primary circuit of the cabinet 1 is used as a switching switch for the power receiving state and the grounding state of the feeder side, but the isolating switch 3 cannot be operated with load, so a DC contactor 4 is connected in series in the main circuit for breaking the load of the feeder direction, which absolutely ensures the safety of the whole maintenance circuit without electricity;

[0025] When the train enters the track inspection path, the cabinet 1 performs closing operation, the cabinet 1 will first open the contactor, disconnect the power supply circuit, and will not generate a loop during the isolating cabinet operation process, then switch the isolating switch 3 to the closing position, and finally close the DC contactor 4 to supply power to the feeder end. When the train reaches the maintenance position, the feeder side is grounded, the cabinet 1 is still disconnected, the DC contactor 4 is cut off, the incoming line side current loop is cut off, and the current loop generated by the train grounding of the feeder side is cut off, then the isolating switch 3 is switched to the grounding state, and finally the DC contactor 4 is closed to short the feeder side and the running rail. Through the setting of the DC contactor 4, the probability of the isolating switch 3 in the cabinet 1 being disconnected with load is reduced, the safety of the line maintenance and the service life of the isolating switch 3 are greatly improved, and the failure rate and maintenance workload during long-term operation are greatly reduced.

[0026] In the further preferred embodiment of the utility model, the inner wall of the cabinet 1 is fixedly installed with a temperature sensor 6, the top of the cabinet 1 is provided with a mounting opening, the mounting opening is fixedly installed with a cooling fan 7, and the top of the cabinet 1 is provided with a connecting box 8.

[0027] In the embodiment, when the cabinet 1 is running, the temperature sensor 6 monitors the temperature in the cabinet 1, and when the temperature is higher than a certain value, the temperature sensor 6 emits a signal to the external control end, and then the control end starts the cooling fan 7 to perform cooling operation on the cabinet 1. The hot air in the cabinet 1 is discharged through the heat dissipation plate 20, and the temperature in the cabinet 1 is monitored by the temperature sensor 6, which is beneficial to subsequent heat dissipation treatment of the electrical devices in the cabinet 1. At the same time, the equipment is cooled by the cooling fan 7, so as to ensure that the temperature in the cabinet 1 will not be too high, and the safe operation of the cabinet 1 is improved.

[0028] In the further preferred embodiment of the utility model, the top of the cabinet 1 is fixedly installed with a group of U-shaped plates 9, the inner wall top of the connecting box 8 is fixedly installed with a group of dustproof nets 10, a group of the dustproof nets 10 are respectively connected with a group of the U-shaped plates 9 in sliding mode, and the connecting box 8 is assembled with a waterproof film 11.

[0029] In the embodiment, when the equipment in the cabinet 1 is cooled, the dust screen 10 and the waterproof film 11 filter impurities, dust and water vapor in the external air, so that the impurities, dust and water vapor cannot enter into the cabinet 1 through the connecting box 8, thereby facilitating the safe operation of the cabinet 1.

[0030] In the further preferred embodiment of the utility model, the cabinet 1 and one side of the connecting box 8 are fixedly installed with the connecting plates 12, the two connecting plates 12 are in contact, the connecting rods 13 are slidably installed on the two connecting plates 12, the clamping blocks 14 are rotatably installed on any connecting plate 12, and the clamping block 14 is in rotatable contact with the connecting rod 13.

[0031] In the embodiment, when the dust screen 10 and the waterproof film 11 need to be cleaned, the clamping block 14 is first rotated to move away from the connecting rod 13, then the connecting rod 13 is removed, the two connecting plates 12 are separated, the connecting box 8 is removed, and the dust screen 10 and the waterproof film 11 can be cleaned, the connecting rod 13 is limited by the clamping block 14, so that the connecting box 8 cannot be separated from the cabinet 1, the limiting effect is good, and the operation is convenient.

[0032] In the further preferred embodiment of the utility model, the lighting mechanism comprises a connecting rod 15, a sliding block 16, a goose neck pipe 17 and a lighting lamp 18, the connecting rod 15 is fixedly installed in the cabinet 1, the sliding block 16 is slidably installed on the connecting rod 15, the goose neck pipe 17 is fixedly installed on one side of the sliding block 16, and the lighting lamp 18 is assembled at one end of the goose neck pipe 17.

[0033] In the embodiment, when the equipment in the cabinet 1 needs to be maintained, the sliding block 16 is first slid to drive the goose neck pipe 17 to slide along the connecting rod 15, so that the position of the lighting lamp 18 is adjusted, then the sliding block 16 is fixed by using the limiting frame 19, the lighting lamp 18 is operated and the goose neck pipe 17 is moved to the position to be maintained through the goose neck pipe 17, so that the equipment is illuminated, the maintenance personnel can conveniently perform the maintenance operation, the lighting mechanism is arranged, the cabinet 1 can be illuminated, and the equipment in the cabinet 1 can be conveniently maintained.

[0034] In the further preferred embodiment of the utility model, one side of the connecting rod 15 is provided with an arc-shaped groove, one side of the sliding block 16 is rotatably installed with the limiting frame 19, and the output rod of the limiting frame 19 is slidably connected with the sliding block 16 and the arc-shaped groove.

[0035] In the embodiment, the slide block 16 is positioned by the limiting frame 19, and then the position of the illuminating lamp 18 is adjusted, so that the lighting operation on different equipment in the cabinet body 1 is facilitated.

[0036] In the further preferred embodiment of the utility model, the cabinet body 1 is provided with a heat dissipation opening on one side, and a heat dissipation plate 20 is detachably installed in the heat dissipation opening.

[0037] In the embodiment, the detachable heat dissipation plate 20 is convenient to take down and clean.

[0038] In summary, compared with the related art, the device can reduce the probability of the isolation switch 3 in the cabinet body 1 to be switched on or off under load, and greatly improve the safety of line maintenance and the service life of the isolation switch 3.

[0039] In several embodiments provided in the application, it should be understood that the disclosed device can be implemented by other ways.

[0040] The above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit the protection scope of the utility model. Obviously, the described embodiments are only some of the embodiments of the utility model, not all the embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative labor belong to the scope to be protected by the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can combine, add or delete the features in the embodiments of the utility model according to the circumstances without creative labor, so as to obtain different other technical solutions which do not deviate from the concept of the utility model, and these technical solutions also belong to the scope to be protected by the utility model.

Claims

1. A load make-up cabinet, characterized in that, Include: Cabinet body; Fixedly installed in the mounting plate installed in the cabinet; Assembled on the mounting plate of the disconnecting switch; DC contactor installed on the mounting plate; Hinged on the cabinet door of the cabinet; Set in the cabinet for lighting the interior of the cabinet lighting mechanism.

2. The load break switchgear according to claim 1, characterized in that The inner wall of the cabinet is fixedly installed with a temperature sensor, and the top of the cabinet is provided with a mounting port, and the mounting port is fixedly installed with a cooling fan, and the top of the cabinet is provided with a connecting box, and the connecting box is covered on the cooling fan.

3. The load break switchgear according to claim 2, characterized in that The top of the cabinet is fixedly installed with a group of U-shaped plates, the inner wall of the connecting box is fixedly installed with a group of dustproof nets, a group of the dustproof nets are respectively slidably connected with a group of the U-shaped plates, and the connecting box is assembled with a waterproof film.

4. The load break switchgear according to claim 2, wherein The cabinet and the connecting box are fixedly installed with a group of connecting plates, two connecting plates are in contact, a connecting rod is slidably installed on the two connecting plates, a clamping block is rotatably installed on any connecting plate, and the clamping block is in rotatable contact with the connecting rod.

5. The load break switch enclosure of claim 1, wherein, The lighting mechanism includes a connecting rod, a sliding block, a goose neck pipe and a lighting lamp, the connecting rod is fixedly installed in the cabinet, the sliding block is slidably installed on the connecting rod, the goose neck pipe is fixedly installed on one side of the sliding block, and the lighting lamp is assembled on one end of the goose neck pipe.

6. The load break switchgear according to claim 5, characterized in that The side of the connecting rod is provided with an arc-shaped groove, the side of the sliding block is rotatably installed with a limiting frame, and the output rod of the limiting frame is slidably connected with the sliding block and the arc-shaped groove.

7. The load break switch enclosure of claim 1, wherein, The side of the cabinet is provided with a heat dissipation port, and the heat dissipation port is detachably installed with a heat dissipation plate.

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