CN111900031A

CN111900031A - High-temperature breaker for train cable of motor train unit

Info

Publication number: CN111900031A
Application number: CN202010763045.XA
Authority: CN
Inventors: 金花兰
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2020-11-06

Abstract

The invention relates to the field of high-temperature breakers for cables, in particular to a high-temperature breaker for train cables of a motor train unit, which comprises a main body, an insulating plate, a temperature sensing mechanism, an opening and closing mechanism, a wiring mechanism, a wire clamping mechanism and a fixing mechanism, wherein the insulating plate is arranged on the main body; through the setting of temperature sensing mechanism, convenient quick installation or replacement temperature sensing spare part, setting through fixed establishment, can be with the quick installation on the insulation board of main part, quick operation does when dismantling, the installation effectiveness is improved, setting through the structure that opens and shuts, can press the apron can auto-eject or fix, the use experience of high temperature circuit breaker has been promoted, setting through wiring mechanism, can increase the area of contact with the cable, avoid causing high temperature circuit breaker can not normally work because of contact failure, setting through the mechanism of pressing from both sides, can be with placing the cable automatic fixation in the clamp, avoid it to cause and break away from the main part because of rocking at motor car operation process, the power consumption safety has been guaranteed.

Description

High-temperature breaker for train cable of motor train unit

Technical Field

The invention relates to the field of high-temperature circuit breakers for cables, in particular to a high-temperature circuit breaker for a train cable of a motor train unit.

Background

The bullet train is a railway vehicle provided with wheel drive machinery equipment, and is not a motor train unit. The motor cars are arranged in high-speed trains and all train type vehicles including constant-speed motor train units, ordinary-speed trains, subway trains, light rail trains, monorail trains, magnetic levitation trains and the like, the motor cars which supply power by power transmission need to be cables, heat can be generated when the cables are overloaded, and high-temperature breakers are needed to be used for detecting the temperature of the cables

Traditional high temperature circuit breaker adopts threaded connection's fixed mode to settle inside the motor car mostly, can waste operating time when needs installation or replacement, and install the inconvenient instrument operation that has certain length of high temperature circuit breaker in narrow and small space, when the temperature probe that has certain life-span needs the replacement, owing to fix the inside at the circuit breaker to the loaded down with trivial details process of whole replacement.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a high-temperature circuit breaker for a train cable of a motor train unit.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a high temperature circuit breaker that EMUs train cable was used, includes main part, insulation board, temperature sensing mechanism, opens and shuts the mechanism, wiring mechanism, clamping mechanism and fixed establishment, the bottom of main part is equipped with the insulation board, the main part with be equipped with between the insulation board and be used for convenient quick fixed establishment, one side of main part is equipped with and is used for quick replacement temperature sensing spare part temperature sensing mechanism, the top of main part is equipped with and is used for making things convenient for the keyless to open and shut opening and shut mechanism, one side of main part is equipped with connecting cable wiring mechanism, the main part is close to wiring mechanism's one end is equipped with centre gripping fixed cable fixing mechanism.

Specifically, the temperature sensing mechanism comprises a detection column, a first sliding ring, first springs, a sliding cavity, a support rod and a support ball, wherein the detection column slides on one side of the main body, the detection column is located inside one end of the outer side of the main body, the sliding cavity is arranged inside the main body, the first sliding ring is arranged inside the sliding cavity, the first sliding ring is connected to the detection column in a sliding mode through the sliding cavity, the first springs are arranged inside the sliding cavity, one ends of the first springs are fixed to one ends of the first sliding ring, the other ends of the first sliding ring are fixed to the inner wall of the sliding cavity, the first sliding ring deviates from one side of the first springs, the two support rods are fixed to one side of the first sliding ring, and one ends of the support rods deviate from the first sliding ring are abutted to the support ball.

Specifically, fixed establishment is including drawing handle, pull rod, fifth spring, first connecting rod, second connecting rod and supporting the piece, the inside of main part bottom slides and has the pull rod, the pull rod is located the one end in the main part outside is fixed with draw the handle, the pull rod is located the inside one end of main part is rotated and is had first connecting rod, the middle part of first connecting rod rotate in on the inner wall of main part, first connecting rod deviates from the one end of pull rod is rotated and is had the second connecting rod, the second connecting rod deviates from the one end of first connecting rod is rotated and is had support the piece, be geometric shape support the piece slide in the inside of main part and one end contradict in the insulation board.

Specifically, the mechanism that opens and shuts includes apron, link, second spring, gag lever post, kicking block, third spring, second sliding ring and spacing groove, the top of main part is equipped with the apron, the one end of apron rotate in the inside and the bottom mounting of main part have the link, the link with be fixed with between the inner wall of main part the second spring, the apron deviates from second spring one end the inside of main part is equipped with the spacing groove, the inside of spacing groove is equipped with the gag lever post with the second sliding ring, second sliding ring sliding connection in the inside of spacing groove, the top of gag lever post is fixed in the bottom of apron, the inside of gag lever post slides and has two to be the symmetric relation the kicking block, two be fixed with between the kicking block the third spring.

Specifically, the wiring mechanism comprises a rotary column, a rotary rod, a connecting block, a first abutting block, a first rack, a first gear, a second rack, a second abutting block, a fourth spring and a wire inlet, wherein three rotary columns are connected to the inner thread of one end of the main body, the rotary rod is arranged at the outer side of the top end of the main body in a rotating mode at the inner part of the top end of the rotary column, the rotary column is arranged in the main body in a rotating mode and provided with the connecting block in a sliding mode, the first abutting block is fixed at the bottom end of the connecting block, the first rack and the first gear are respectively arranged on two sides of the first abutting block, the first rack is in meshed connection with the first gear, the second rack is meshed at the bottom end of the first gear, and the second abutting block is fixed between the bottom ends of the two second racks, the bottom end of the second abutting block is fixed with two fourth springs, the bottom ends of the fourth springs are fixed on the inner wall of the main body, the first abutting block, the second abutting block and the second rack are connected inside the main body in a sliding mode, and the wire inlet is formed in the outer side, close to the second abutting block, of the main body.

Specifically, the wire clamping mechanism comprises three groups of clamps, a third gear, a second gear, a third gear, a fourth gear, a fifth gear, a rotating shaft and a clockwork spring, wherein three groups of clamps are arranged at one end of the main body close to the wire inlet, every two clamps form one group, the bottom ends of the clamps are connected to the inside of the main body in a sliding manner, the third gear is fixed at the bottom end of one clamp, the second gear is meshed with the bottom end of the third gear, the fourth gear is meshed with the bottom end of the other clamp, the third gear is meshed with one side of the bottom end of the second gear, the fifth gear is meshed between the fourth gear and the third gear, the rotating shaft is fixed at the middle part of the fifth gear, and the second gear, the third gear, the fourth gear and the rotating shaft rotate in the main body, the lateral wall of pivot one end twines has the clockwork spring, the one end of clockwork spring is fixed in the lateral wall of pivot and the other end is fixed in on the inner wall of main part.

The invention has the beneficial effects that:

(1) the high-temperature circuit breaker for the train cable of the motor train unit is characterized in that through the arrangement of the temperature sensing mechanism, thereby the temperature sensing probe is arranged outside the main body, and the quick-change internal structure facilitates the installation or replacement of the probe, namely, when the detection column needs to be installed, the first sliding ring on the side wall of the detection column is slid, the first sliding ring slides in the sliding cavity in the detection column, the force capable of causing the two first springs to contract is applied, the supporting rod in the detection column is not abutted against the supporting ball, then one end of the detection column is inserted into the main body and is not slid by the first sliding ring, the first spring pushes against the first sliding ring to return to the initial position, the pushing rod pushes against the pushing ball again, so that the pushing ball protrudes out of the side wall of the detecting column, thereby the block is in the inside of main part to set up the temperature sensing probe in the outside of main part, and the inner structure of quick change has made things convenient for the installation or the replacement of visiting the post.

(2) The high-temperature circuit breaker for the train cable of the motor train unit can quickly install the main body on the insulating plate through the arrangement of the fixing mechanism, can also be quickly operated during disassembly, improves the installation efficiency, avoids the condition that the circuit breaker cannot be operated in a small space, can automatically pop up or fix by pressing the cover plate without directly opening and closing the cover plate through the arrangement of the opening and closing structure, and improves the use experience of the high-temperature circuit breaker, namely, when the main body needs to be disassembled, the pull handle on one side of the main body is pulled firstly, the pull handle drives the pull rod to slide towards the outer side of the main body, the pull rod pulls the first connecting rod, so that the first connecting rod deflects in the main body, the other end of the first connecting rod pulls the second connecting rod, so that the abutting block slides in the main body, the abutting block is not on the side wall of the insulating plate, and the main body which is not fixed can be taken away at the moment, then, a new main body is placed at the position fixed by the insulating plate again through the operation, the pull handle is not pulled, the pull rod is automatically reset by the fifth spring, so that the abutting block is clamped on the insulating plate, the main body can be quickly installed on the insulating plate, the operation can be quickly carried out during disassembly, the installation efficiency is improved, and the situation that the operation cannot be carried out in a small space is avoided, namely, when components in the main body need to be overhauled, the cover plate is pressed, the limiting column at the bottom end of the cover plate slides towards the bottom end in the limiting groove, the top block can be automatically popped out after the limiting column passes through the second sliding ring, the top block abuts against the side wall at the bottom end of the second sliding ring, at the moment, under the automatic reset of the second spring, the cover plate has the tendency of deflecting towards the outer side of the main body, the limiting column drives the second sliding ring to slide towards the top end of the limiting groove, and after the second sliding ring reaches, two kicking blocks can contract into the inside of spacing post after the automatic compression third spring to cause the inside of the smooth roll-off main part of spacing post, thereby do not need the key directly to open and shut the apron, press the apron and can pop out or fix automatically, promoted the use experience of high temperature circuit breaker.

(3) The high-temperature circuit breaker for the train cable of the motor train unit can clamp the cable in the high-temperature circuit breaker by arranging the wiring mechanism, increase the contact area with the cable, and avoid the problem that the high-temperature circuit breaker cannot normally work due to poor contact, the cable placed in the clamp can be automatically fixed by arranging the wire clamping mechanism, the cable is prevented from being separated from the main body due to shaking in the running process of the motor train unit, and the power utilization safety is ensured, namely, the cable is placed in the main body through the wire inlet, namely the cable is placed between the first abutting block and the second abutting block, then the rotating rod is operated to rotate the rotating column, the rotating column moves towards the bottom end of the main body, the first racks at the two ends of the first abutting block are meshed with the first gear to rotate, the first gear is meshed with the second rack, so that the second abutting block and the first abutting block are close to each other, and the cable can be clamped in the high-temperature circuit breaker, the contact area between the cable and the high-temperature breaker is increased, the situation that the high-temperature breaker cannot normally work due to poor contact is avoided, namely, the cable to be fixed is placed between the two clamps, the clamps are not obstructed, the spring in the main body releases accumulated force, the rotating shaft rotates, the fifth gear is meshed with the third gear and the fourth gear on two sides, the third gear is meshed with the second gear, the rotating second gear and the two third racks on the meshing top end of the fourth gear slide, the two clamps are close to each other, the cable placed in the clamps can be automatically fixed, the cable is prevented from being separated from the main body due to shaking in the moving process of the motor car, and the use safety of the cable is guaranteed.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural diagram of an overall structure of a preferred embodiment of a high-temperature circuit breaker for a train cable of a motor train unit according to the present invention;

FIG. 2 is a schematic structural diagram of the temperature sensing mechanism shown in FIG. 1;

FIG. 3 is a schematic structural view of the opening and closing mechanism shown in FIG. 1;

FIG. 4 is a schematic structural view of the wiring mechanism shown in FIG. 1;

FIG. 5 is a schematic structural view of the thread clamping mechanism shown in FIG. 1;

FIG. 6 is a schematic view showing a coupling structure of the power spring and the rotation shaft shown in FIG. 1;

FIG. 7 is a schematic structural view of the securing mechanism shown in FIG. 1;

FIG. 8 is an enlarged view of portion A of FIG. 3;

fig. 9 is a schematic structural diagram of the butting block shown in fig. 7.

In the figure: 1. a main body, 2, an insulating plate, 3, a temperature sensing mechanism, 31, a probe column, 32, a first sliding ring, 33, a first spring, 34, a sliding cavity, 35, a resisting rod, 36, a resisting ball, 4, an opening and closing mechanism, 41, a cover plate, 42, a connecting frame, 43, a second spring, 44, a limiting column, 45, a top block, 46, a third spring, 47, a second sliding ring, 48, a limiting groove, 5, a wiring mechanism, 51, a rotating column, 52, a rotating rod, 53, a connecting block, 54, a first resisting block, 55, a first rack, 56, a first gear, 57, a second rack, 58, a second resisting block, 59, a fourth spring, 59a wire inlet, 6, a wire clamping mechanism, 61, a clamp, 62, a third rack, 63, a second gear, 64, a third gear, 65, a fourth gear, 66, a fifth gear, 67, a rotating shaft, 68, a wire inlet, 6, a wire clamping mechanism, a pull handle, a 72, a fifth spring, a spring, 73, 74. a first connecting rod 75, a second connecting rod 76 and a resisting block.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-9, the high-temperature circuit breaker for a train cable of a motor train unit comprises a main body 1, an insulating plate 2, a temperature sensing mechanism 3, an opening and closing mechanism 4, a wiring mechanism 5, a wire clamping mechanism 6 and a fixing mechanism 7, wherein the insulating plate 2 is arranged at the bottom end of the main body 1, the fixing mechanism 7 for convenient and quick fixing is arranged between the main body 1 and the insulating plate 2, the temperature sensing mechanism 3 for quick replacement of temperature sensing parts is arranged at one side of the main body 1, the opening and closing mechanism 4 for convenient keyless opening and closing is arranged at the top end of the main body 1, the wiring mechanism 5 for connecting a cable is arranged at one side of the main body 1, and the fixing mechanism 7 for clamping and fixing a cable is arranged at one end, close to the wiring mechanism 5, of the main body 1.

Specifically, the temperature sensing mechanism 3 includes a detecting column 31, a first sliding ring 32, a first spring 33, a sliding cavity 34, a resisting rod 35 and a resisting ball 36, the detecting column 31 is slid on one side of the main body 1, the sliding cavity 34 is arranged inside one end of the detecting column 31 located at the outer side of the main body 1, the first sliding ring 32 is arranged inside the sliding cavity 34, the first sliding ring 32 is slidably connected to the detecting column 31 through the sliding cavity 34, two first springs 33 are arranged inside the sliding cavity 34, one end of each first spring 33 is fixed to one end of the first sliding ring 32, the other end of each first spring 33 is fixed to the inner wall of the sliding cavity 34, two resisting rods 35 are fixed to one side of the first sliding ring 32 departing from the first springs 33, one end of each resisting rod 35 departing from the first sliding ring 32 is abutted against the resisting ball 36, and when the detecting column 31 is required to be installed, the first sliding ring 32 on the side wall of the detecting column 31 is slid, the first sliding ring 32 slides in the sliding cavity 34 inside the probe column 31, and applies a force capable of causing the two first springs 33 to contract, so that the abutting rod 35 inside the probe column 31 does not abut against the abutting ball 36, then one end of the probe column 31 is inserted into the main body 1, and the first sliding ring 32 is not slid, so that the first spring 33 abuts against the first sliding ring 32 and returns to the initial position, the abutting rod 35 again abuts against the abutting ball 36, so that the abutting ball 36 protrudes out of the side wall of the probe column 31, and is clamped inside the main body 1, so that the temperature sensing probe is arranged outside the main body 1, and the quick-change internal structure facilitates the installation or replacement of the probe column 31.

Specifically, the fixing mechanism 7 includes a pull handle 71, a pull rod 72, a fifth spring 73, a first connecting rod 74, a second connecting rod 75 and a resisting block 76, the pull rod 72 is slidably disposed inside the bottom end of the main body 1, the pull handle 71 is fixed at one end of the pull rod 72 located outside the main body 1, the first connecting rod 74 is rotatably disposed at one end of the pull rod 72 located inside the main body 1, the middle portion of the first connecting rod 74 is rotated on the inner wall of the main body 1, the second connecting rod 75 is rotatably disposed at one end of the first connecting rod 74, the resisting block 76 is rotatably disposed at one end of the second connecting rod 75 away from the first connecting rod 74, the resisting block 76 in a geometric shape slides inside the main body 1, and one end of the resisting block abuts against the insulating plate 2, because when the main body 1 needs to be disassembled, the pull handle 71 on one side of the main body 1 is pulled first, the pull handle 71 drives the pull rod 72 to slide outside the main body 1, the pull rod 72 pulls the first connecting rod 74 to enable the first connecting rod 74 to deflect in the main body 1, the other end of the first connecting rod 74 pulls the second connecting rod 75 to enable the abutting block 76 to slide in the main body 1, the abutting block 76 does not abut against the side wall of the insulating plate 2, the main body 1 which is not fixed can be taken away at the moment, then a new main body 1 is placed at the position where the insulating plate 2 is fixed through the operation again, the pull handle 71 is not pulled, the pull rod 72 enables the abutting block 76 to be clamped on the insulating plate 2 under the automatic resetting of the fifth spring 73, and therefore the main body 1 can be rapidly installed on the insulating plate 2.

Specifically, the opening and closing mechanism 4 includes a cover plate 41, a connecting frame 42, a second spring 43, a limiting rod 44, a top block 45, a third spring 46, a second sliding ring 47 and a limiting groove 48, the cover plate 41 is disposed on the top end of the main body 1, one end of the cover plate 41 rotates inside the main body 1, the connecting frame 42 is fixed at the bottom end of the cover plate, the second spring 43 is fixed between the connecting frame 42 and the inner wall of the main body 1, the limiting groove 48 is disposed inside the main body 1, which is away from one end of the second spring 43, of the cover plate 41, the limiting rod 44 and the second sliding ring 47 are disposed inside the limiting groove 48, the second sliding ring 47 is slidably connected inside the limiting groove 48, the top end of the limiting rod 44 is fixed at the bottom end of the cover plate 41, two top blocks 45 in a symmetrical relationship slide inside the limiting rod 44, the third spring 46 is fixed between the two top blocks 45, when the components inside the main body 1 need to be overhauled, the cover plate 41 is pressed, the limiting column 44 at the bottom end of the cover plate 41 slides towards the bottom end in the limiting groove 48, the top block 45 can be automatically ejected after the limiting column 44 crosses the second sliding ring 47, the top block 45 is abutted against the side wall at the bottom end of the second sliding ring 47, at the moment, under the automatic reset of the second spring 43, the cover plate 41 has the tendency of deflecting towards the outer side of the main body 1, the limiting column 44 drives the second sliding ring 47 to slide towards the top end of the limiting groove 48, after the second sliding ring 47 slides to the top end of the limiting groove 48, the two top blocks 45 can automatically compress the third spring 46 and then contract into the limiting column 44, so that the limiting column 44 smoothly slides out of the main body 1, the cover plate 41 can be automatically ejected or fixed without directly opening and closing by a key by pressing the cover plate 41, the use experience of the high-temperature circuit breaker is improved.

Specifically, the wiring mechanism 5 includes a rotary column 51, a rotary rod 52, a connecting block 53, a first abutting block 54, a first rack 55, a first gear 56, a second rack 57, a second abutting block 58, a fourth spring 59 and a wire inlet 59a, the internal thread of one end of the main body 1 is connected with three rotary columns 51, the top end of the rotary column 51 is located at the outer side of the top end of the main body 1, the rotary rod 52 rotates inside the top end, the rotary column 51 is located inside the main body 1, the connecting block 53 rotates inside the main body 1, the connecting block 53 is slidably connected inside the main body 1, the first abutting block 54 is fixed at the bottom end of the connecting block 53, one first rack 55 and one first gear 56 are respectively arranged on two sides of the first abutting block 54, the first rack 55 is engaged with the first gear 56, the bottom end of the first gear 56 away from the first rack 55 is engaged with the second rack 57, the second abutting block 58 is fixed between the bottom ends of the two second racks 57, the bottom end of the second abutting block 58 is fixed with two fourth springs 59, the bottom end of the fourth spring 59 is fixed on the inner wall of the main body 1, the first abutting block 54, the second abutting block 58 and the second rack 57 are connected to the inside of the main body 1 in a sliding manner, the wire inlet 59a is formed in the outer side of the main body 1 close to the second abutting block 58, since the cable is put into the inside of the main body 1 through the wire inlet 59a, namely, between the first abutting block 54 and the second abutting block 58, the rotating rod 52 is operated to rotate the rotating column 51, the rotating column 51 is displaced towards the bottom end of the main body 1, the first racks 55 at the two ends of the first abutting block 54 are meshed with the first gear 56 to rotate, the first gear 56 is meshed with the second rack 57, so that the second abutting block 58 and the first abutting block 54 are close to each other, and the cable can be clamped in the inside of the high-temperature electrical apparatus, and the contact area between the cable and the high-temperature breaker is increased, so that the problem that the high-temperature breaker cannot normally work due to poor contact is avoided.

Specifically, the wire clamping mechanism 6 includes a clamp 61, a third rack 62, a second gear 63, a third gear 64, a fourth gear 65, a fifth gear 66, a rotating shaft 67 and a spiral spring 68, three sets of the clamp 61 are provided at one end of the main body 1 close to the wire inlet 59a, every two sets of the clamp 61 are provided, the bottom end of the clamp 61 is slidably connected to the inside of the main body 1, the third rack 62 is fixed at the bottom end, the second gear 63 is engaged with the bottom end of one of the third racks 62, the fourth gear 65 is engaged with the bottom end of the other one of the third racks 62, the third gear 64 is engaged with one side of the bottom end of the second gear 63, the fifth gear 66 is engaged between the fourth gear 65 and the third gear 64, the rotating shaft 67 is fixed at the middle part of the fifth gear 66, and the second gear 63, the fifth gear 66, The third gear 64, the fourth gear 65 and the rotating shaft 67 rotate inside the main body 1, the spring 68 is wound around the side wall of one end of the rotating shaft 67, one end of the spring 68 is fixed to the side wall of the rotating shaft 67, and the other end of the spring is fixed to the inner wall of the main body 1, since the cable to be fixed is placed between the two clamps 61 without obstructing the clamps 61, the spring 68 inside the main body 1 releases the accumulated force, so that the rotating shaft 67 rotates, the fifth gear 66 engages with the third gear 64 and the fourth gear 65 on both sides, the third gear 64 engages with the second gear 63, the rotating second gear 63 and the fourth gear 65 engage with the two third racks 62 on the top end to slide, so that the two clamps 61 approach each other, the cable placed in the clamps 61 can be automatically fixed, and the cable is prevented from being separated from the main body 1 due to shaking during the operation of the bullet train, the use safety of the cable is ensured.

When the temperature sensing probe is used, when the probe column 31 needs to be installed, the first sliding ring 32 on the side wall of the probe column 31 is slid, the first sliding ring 32 slides in the sliding cavity 34 in the probe column 31, a force capable of causing the two first springs 33 to contract is applied, the supporting rod 35 in the probe column 31 does not abut against the supporting ball 36, then one end of the probe column 31 is inserted into the main body 1, the first sliding ring 32 does not slide, the first springs 33 abut against the first sliding ring 32 and return to the initial position, the supporting rod 35 abuts against the supporting ball 36 again, the supporting ball 36 protrudes out of the side wall of the probe column 31 and is clamped in the main body 1, the temperature sensing probe is arranged outside the main body 1, and the quick-change internal structure facilitates installation or replacement of the probe column 31; when the main body 1 needs to be disassembled, the pull handle 71 at one side of the main body 1 is pulled first, the pull handle 71 drives the pull rod 72 to slide towards the outer side of the main body 1, the pull rod 72 pulls the first link 74, causing the first link 74 to deflect inside the body 1, the other end of the first link 74 pulls the second link 75, causing the abutting block 76 to slide inside the main body 1, the resisting block 76 does not touch the side wall of the insulating plate 2, and the main body 1 which is not fixed can be taken away, then, a new body 1 is placed in the fixed position of the insulating plate 2 by the above operation again, without pulling the pull handle 71, the pull rod 72, under the automatic return of the fifth spring 73, causes the abutment 76 to engage on the insulating plate 2, so that the body 1 can be quickly mounted on the insulating plate 2, the operation can be quickly carried out during disassembly, the installation efficiency is improved, and the condition that the operation cannot be carried out in a small space is avoided; when the components in the main body 1 need to be overhauled, the cover plate 41 is pressed, the limiting column 44 at the bottom end of the cover plate 41 slides towards the bottom end in the limiting groove 48, the top block 45 can be automatically ejected after the limiting column 44 passes over the second sliding ring 47, the top block 45 is abutted against the side wall at the bottom end of the second sliding ring 47, at the moment, under the automatic resetting of the second spring 43, the cover plate 41 tends to deflect towards the outer side of the main body 1, the limiting column 44 drives the second sliding ring 47 to slide towards the top end of the limiting groove 48, after the second sliding ring 47 slides to the top end of the limiting groove 48, the two top blocks 45 can automatically compress the third spring 46 and then contract into the limiting column 44, so that the limiting column 44 smoothly slides out of the main body 1, the cover plate 41 does not need to be directly opened and closed by a key, the cover plate 41 can be automatically ejected or fixed by pressing, and the use experience of the high-; since the cable is put into the main body 1 through the wire inlet 59a, namely, between the first abutting block 54 and the second abutting block 58, and then the rotating rod 52 is operated to rotate the rotating column 51, the rotating column 51 is displaced towards the bottom end of the main body 1, the first racks 55 at the two ends of the first abutting block 54 are meshed with the first gear 56 to rotate, and the first gear 56 is meshed with the second rack 57, so that the second abutting block 58 and the first abutting block 54 are close to each other, the cable can be clamped in the high-temperature breaker, the contact area between the cable and the cable is increased, and the problem that the high-temperature breaker cannot normally work due to poor contact is avoided; because the cable needing to be fixed is placed between the two clamps 61 and does not block the clamps 61, the spring 68 in the main body 1 releases the accumulated force, so that the rotating shaft 67 rotates, the fifth gear 66 is meshed with the third gear 64 and the fourth gear 65 on the two sides, the third gear 64 is meshed with the second gear 63, the rotating second gear 63 and the fourth gear 65 are meshed with the two third racks 62 at the top ends to slide, the two clamps 61 approach each other, the cable placed in the clamps 61 can be automatically fixed, the cable is prevented from being separated from the main body 1 due to shaking in the running process of the motor car, and the use safety of the cable is ensured.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a high temperature circuit breaker that EMUs train cable was used which characterized in that: including main part (1), insulation board (2), temperature sensing mechanism (3), mechanism (4) that opens and shuts, wiring mechanism (5), wire clamping mechanism (6) and fixed establishment (7), the bottom of main part (1) is equipped with insulation board (2), main part (1) with be equipped with between insulation board (2) and be used for convenient quick fixed establishment (7), one side of main part (1) is equipped with and is used for replacing temperature sensing spare part fast temperature sensing mechanism (3), the top of main part (1) is equipped with and is used for making things convenient for the keyless to open and shut mechanism (4), one side of main part (1) is equipped with connecting cable wiring mechanism (5), main part (1) is close to the one end of wiring mechanism (5) is equipped with the fixed establishment (7) of centre gripping fixed cable.

2. The high-temperature circuit breaker for the train cable of the motor train unit according to claim 1, characterized in that: the temperature sensing mechanism (3) comprises a detection column (31), a first sliding ring (32), a first spring (33), a sliding cavity (34), a resisting rod (35) and a resisting ball (36), wherein the detection column (31) is arranged on one side of the main body (1) in a sliding mode, the sliding cavity (34) is arranged inside one end, located on the outer side of the main body (1), of the detection column (31), the first sliding ring (32) is arranged inside the sliding cavity (34), the first sliding ring (32) is connected to the detection column (31) in a sliding mode through the sliding cavity (34), two first springs (33) are arranged inside the sliding cavity (34), one end of each first spring (33) is fixed to one end of the corresponding first sliding ring (32), the other end of each first sliding ring (32) is fixed to the inner wall of the corresponding sliding cavity (34), and the resisting rods (35) are fixed to one side, away from the corresponding first spring (33), of the corresponding first sliding ring (32), one end of the abutting rod (35) departing from the first sliding ring (32) abuts against the abutting ball (36).

3. The high-temperature circuit breaker for the train cable of the motor train unit according to claim 1, characterized in that: the fixing mechanism (7) comprises a pull handle (71), a pull rod (72), a fifth spring (73), a first connecting rod (74), a second connecting rod (75) and a resisting block (76), the pull rod (72) is arranged inside the bottom end of the main body (1) in a sliding manner, the pull handle (71) is fixed at one end of the pull rod (72) positioned outside the main body (1), one end of the pull rod (72) positioned in the main body (1) is provided with the first connecting rod (74) in a rotating way, the middle part of the first connecting rod (74) rotates on the inner wall of the main body (1), one end of the first connecting rod (74) departing from the pull rod (72) is provided with the second connecting rod (75) in a rotating way, one end of the second connecting rod (75) departing from the first connecting rod (74) is provided with the abutting block (76) in a rotating mode, the abutting block (76) in a geometric shape slides in the main body (1), and one end of the abutting block abuts against the insulating plate (2).

4. The high-temperature circuit breaker for the train cable of the motor train unit according to claim 1, characterized in that: the opening and closing mechanism (4) comprises a cover plate (41), a connecting frame (42), a second spring (43), a limiting rod (44), a top block (45), a third spring (46), a second sliding ring (47) and a limiting groove (48), the cover plate (41) is arranged at the top end of the main body (1), one end of the cover plate (41) rotates in the main body (1), the connecting frame (42) is fixed at the bottom end of the main body, the second spring (43) is fixed between the connecting frame (42) and the inner wall of the main body (1), the limiting groove (48) is arranged in the main body (1) at the end of the cover plate (41) deviating from the second spring (43), the limiting rod (44) and the second sliding ring (47) are arranged in the limiting groove (48), and the second sliding ring (47) is connected in the limiting groove (48) in a sliding manner, the top of gag lever post (44) is fixed in the bottom of apron (41), the inside slip of gag lever post (44) has two to be symmetrical relation kicking block (45), two be fixed with between kicking block (45) third spring (46).

5. The high-temperature circuit breaker for the train cable of the motor train unit according to claim 1, characterized in that: the wiring mechanism (5) comprises rotary columns (51), rotary rods (52), a connecting block (53), a first abutting block (54), a first rack (55), a first gear (56), a second rack (57), a second abutting block (58), a fourth spring (59) and a wire inlet (59a), the three rotary columns (51) are connected to the inner thread of one end of the main body (1), the top ends of the rotary columns (51) are located on the outer side of the top end of the main body (1), the rotary rods (52) are rotated in the top ends of the rotary columns (51), the connecting block (53) is located in the main body (1) and rotates in the rotary columns (51), the connecting block (53) is connected to the inside of the main body (1) in a sliding mode, the first abutting block (54) is fixed to the bottom end of the connecting block (53), the first rack (55) and the first gear (56) are arranged on two sides of the first abutting block (54) respectively, the first rack (55) is meshed with the first gear (56), the second rack (57) is meshed with the bottom end of the first gear (56) departing from the first rack (55), the second abutting block (58) is fixed between the bottom ends of the two second racks (57), the two fourth springs (59) are fixed at the bottom end of the second abutting block (58), the bottom ends of the fourth springs (59) are fixed on the inner wall of the main body (1), the first abutting block (54), the second abutting block (58) and the second rack (57) are connected to the inside of the main body (1) in a sliding mode, and the wire inlet (59a) is formed in the outer side, close to the second abutting block (58), of the main body (1).

6. The high-temperature circuit breaker for the train cable of the motor train unit according to claim 5, characterized in that: the wire clamping mechanism (6) comprises clamps (61), third racks (62), second gears (63), third gears (64), fourth gears (65), fifth gears (66), a rotating shaft (67) and a spring (68), three groups of clamps (61) are arranged at one end, close to the wire inlet (59a), of the main body (1), every two clamps (61) form one group, the bottom ends of the clamps (61) are connected to the inside of the main body (1) in a sliding mode and are fixedly provided with the third racks (62), the second gear (63) is meshed at the bottom end of one third rack (62), the fourth gear (65) is meshed at the bottom end of the other third rack (62), the third gear (64) is meshed at one side of the bottom end of the second gear (63), and the fifth gear (66) is meshed between the fourth gear (65) and the third gear (64), the middle part of fifth gear (66) is fixed with pivot (67), second gear (63) third gear (64) fourth gear (65) with pivot (67) rotate in the inside of main part (1), the lateral wall of pivot (67) one end twines has clockwork spring (68), the one end of clockwork spring (68) is fixed in the lateral wall and the other end of pivot (67) are fixed in on the inner wall of main part (1).