CN110010332A

CN110010332A - A kind of electric power electric transformer for urban track traffic

Info

Publication number: CN110010332A
Application number: CN201910412014.7A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-17
Filing date: 2019-05-17
Publication date: 2019-07-12

Abstract

The present invention relates to electrical equipment technical fields, and disclose a kind of electric power electric transformer for urban track traffic, including oil tank of transformer, top plate is fixedly installed at the top of the oil tank of transformer, side at the top of the top plate is fixedly installed with support frame, conservator is fixedly installed at the top of support frame as described above, the inside of the oil tank of transformer and the internal switching of conservator have oil guide pipe.This is used for the electric power electric transformer of urban track traffic, the two sides of seal pipe are located at by fixing axle under normality and conductive sheet, and utilize the limit of upper switch block and the next switch block, in the case where the next dead axle does not turn, lower fixing axle will not be contacted with conductive sheet, so that it is guaranteed that not will form access between the first conducting wire and the second conducting wire, it avoids because subway gives it the gun or becomes the vibration of rail generation, Buchholz relay is caused to malfunction, the problem of causing subway power failure, influencing the normal operation of subway.

Description

A kind of electric power electric transformer for urban track traffic

Technical field

The present invention relates to electrical equipment technical field, specially a kind of electric power electric transformation for urban track traffic Device.

Background technique

Urban track traffic is the vehicle conveyance system that load-bearing and guiding are carried out using track structure, including most common Iron series system, with the development of the city, subway system becomes the backbone of urban public transport, has energy conservation, province ground and freight volume big The advantages that, sufficient power is provided for locomotive by electric power, in subway system, transformer is essential equipment, wherein Traction transformer of locomotive is an important component on AC electric locomotive, for the 25KV high tension voltage obtained on contact net It is transformed to the voltage that supply traction electric machine and other motors, electrical work are suitble to, commonly using tractive transformer is good heat dissipation effect Oil-immersed transformer.

Oil-immersed transformer includes the important components such as conservator, Buchholz relay, wherein Buchholz relay is used in transformer A kind of important protective device, so that oil decomposition is generated gas using power transformer interior fault or when causing oil flow surge, make gas The contact of body relay acts, and connects specified control loop, and the alarm of sending signal or starting protection element are cut automatically in time Except transformer.

However, existing Buchholz relay control loop is controlled by internal tongue tube, inside control tongue tube Two connecting terminals contact come empty packet control loop on-off, realize protection, due to the connecting terminal inside tongue tube It is closer, the travel speed and acceleration of subway are larger, and when subway becomes rail, can generate vibration, be easy so that dry spring Connecting terminal contact inside pipe, and existing spring type shock absorption device is only capable of reducing vibrating effect, does not ensure that tongue tube Internal connecting terminal will not contact, so that Buchholz relay still will appear the possibility of malfunction, electric power event is caused when serious Barrier, to influence the normal operation of subway.

Summary of the invention

The present invention provides a kind of electric power electric transformer for urban track traffic, have avoid Buchholz relay because The advantages of vibration facter malfunctions, travel speed and the acceleration for solving subway are larger, and when subway becomes rail, can Vibration is generated, is easy so that the connecting terminal inside tongue tube contacts, and existing spring type shock absorption device is only capable of reducing vibration Effect does not ensure that the connecting terminal inside tongue tube will not contact, so that Buchholz relay still will appear malfunction May, power failure is led to when serious, thus the problem of influencing the normal operation of subway.

The invention provides the following technical scheme: a kind of electric power electric transformer for urban track traffic, including transformation Device fuel tank is fixedly installed with top plate at the top of the oil tank of transformer, and the side at the top of the top plate is fixedly installed with support frame, Conservator is fixedly installed at the top of support frame as described above, the inside of the oil tank of transformer and the internal switching of conservator have oil guide pipe, Fixing sleeve is equipped with the Buchholz relay between oil tank of transformer and conservator, the top of the Buchholz relay on the oil guide pipe Lid fixing sleeve is equipped with vent valve, is fixedly installed with the terminal box positioned at vent valve side on the top cover of the Buchholz relay, institute The bottom for stating Buchholz relay top cover is fixedly connected there are two fixed block, and the bottom end of two fixed blocks has been respectively fixedly connected with Connecting plate, the top and bottom end of two connecting plates are movably installed with rotary shaft, and the middle part of a rotary shaft is fixed It is set with the upper link being located between two connecting plates, the upper link is fixedly connected with far from one end of rotary shaft and oils The middle part fixing sleeve of cup, another rotary shaft is equipped with lower link, and the lower link is fixed far from one end of rotary shaft It is connected with lower lubricating cup, the baffle being fixedly connected with above rotary shaft at the top of the lower link, two rotary shafts One end extend respectively to the positive side of connecting plate and fixing sleeve equipped with inclined-plane gear, a positive top of connecting plate One group of limit sleeve is housed with the equal fixing sleeve in bottom, the quantity of limit sleeve described in one group is two, and two limit sleeves are in vertical Histogram is movably installed with circuit control device to the front for being distributed in connecting plate respectively between limit sleeve described in two groups, and described time Road control device includes rotary joint and movable set of the movable set on a limit sleeve on another limit sleeve Seal pipe, the bottom end of the rotary joint and the top of seal pipe are fixedly attached, and fixing sleeve is equipped with conical tooth in the seal pipe Wheel, the top of the rotary joint and the bottom end of seal pipe are sealedly connected with sealing-plug, the middle part of two sealing-plugs Other fixing sleeve is connected to the first conducting wire and the second conducting wire, and one end of first conducting wire is electrically connected with upper dead axle, described upper fixed It is fixedly connected in the middle part of the top of axis and a sealing-plug bottom end, the bottom end of the upper dead axle extends to the inside of seal pipe simultaneously It is fixedly connected with upper switch block, the side of the upper switch block bottom is fixedly connected with fixing axle, one end of second conducting wire It is electrically connected with the next dead axle, is fixedly connected in the middle part of the bottom end and another sealing-plug top of the bottom dead axle, the bottom The top of dead axle is fixedly connected with the next switch block inside seal pipe, and the side at the top of the bottom switch block is fixedly installed with Conductive sheet.

Optionally, the shapes and sizes of the inclined-plane gear and the shapes and sizes of angular wheel are all the same, and inclined-plane tooth It is engaged with the outer of angular wheel the outer of wheel.

Optionally, the front of the connecting plate is fixedly connected with the block positioned at upper link side, and the side of block It is in the same plane with the side of rotary shaft.

Optionally, the angle of the lower link and baffle is 45 degree, and lower link is parallel with upper link.

Optionally, one end that first conducting wire and the second conducting wire are located at outside rotary joint and seal pipe is equipped with protection Set, and the other end of the first conducting wire and the second conducting wire all extends to the inside of terminal box.

Optionally, the upper dead axle, upper switch block, fixing axle, the next switch block and the next dead axle are electric conductor.

Optionally, the internal activity of the outer of the upper switch block and seal pipe is socketed, and the diameter of upper switch block is equal to The internal diameter of rotary joint and seal pipe, the shapes and sizes of the upper switch block and the shapes and sizes of the next switch block are all the same.

Optionally, the fixing axle and conductive sheet are located at the two sides inside seal pipe, and the bottom end of fixing axle is under The top of position switch block does not contact.

Optionally, it is fixedly connected at the top of one end of the conductive sheet and the next switch block, and the other end of conductive sheet is located at The top of fixing axle low side, the bottom of the conductive sheet other end are fixedly connected with spring, and the bottom end of spring and the next switch block Top be fixedly connected.

The present invention have it is following the utility model has the advantages that

1, the electric power electric transformer for being used for urban track traffic is located at by fixing axle under normality with conductive sheet Two sides of seal pipe, and using the limit of upper switch block and the next switch block, in the case where the next dead axle does not turn, lower fixing axle with Conductive sheet will not contact, so that it is guaranteed that not will form access between the first conducting wire and the second conducting wire, avoid because subway accelerates to go The vibration for sailing or becoming rail generation, causes Buchholz relay to malfunction, causes subway power failure, influence the normal fortune of subway Capable problem.

2, electric power electric transformer for being used for urban track traffic, by lower lubricating cup because of Buchholz relay interior oil potential drop It is low and when declining, rotated using rotary shaft so that seal pipe drives the next fixed-axis rotation so that fixing axle is contacted with conductive sheet, shape At access, alarm, convenient for the normal use of Buchholz relay, meanwhile, cooperation seal pipe, rotary joint and sealing-plug, really Leakproofness inside secrecy tube sealing is preferable, oil leak situation will not easily occurs, influences the contact condition of fixing axle and conductive sheet, improves The stability of Buchholz relay.

Detailed description of the invention

Fig. 1 is schematic structural view of the invention；

Fig. 2 is the cross-sectional view of Buchholz relay of the present invention；

Fig. 3 is the cut away view of Buchholz relay of the present invention；

Fig. 4 is Fig. 2 circuit control device schematic diagram of the present invention；

Fig. 5 is Fig. 4 seal pipe cross-sectional view of the present invention；

Fig. 6 is the bottom Fig. 5 switch block schematic diagram of the present invention；

Fig. 7 is the side view of Fig. 6 of the present invention.

In figure: 1, oil tank of transformer；2, top plate；3, support frame；4, conservator；5, oil guide pipe；6, Buchholz relay；7, it deflates Valve；8, terminal box；9, fixed block；10, connecting plate；11, rotary shaft；111, inclined-plane gear；12, upper link；121, upper lubricating cup； 13, lower link；131, lower lubricating cup；132, baffle；14, limit sleeve；15, circuit control device；151, rotary joint；152, close Tube sealing；153, angular wheel；154, sealing-plug；155, the first conducting wire；1551, upper dead axle；1552, upper switch block；1553, solid Dead axle；156, the second conducting wire；1561, the next dead axle；1562, the next switch block；1563, conductive sheet.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

Please refer to Fig. 1-7, a kind of electric power electric transformer for urban track traffic, including oil tank of transformer 1, transformation The top of device fuel tank 1 is fixedly installed with top plate 2, and the side at 2 top of top plate is fixedly installed with support frame 3, and the top of support frame 3 is solid Dingan County is equipped with conservator 4, and the inside of oil tank of transformer 1 and the internal switching of conservator 4 have oil guide pipe 5, and fixing sleeve is equipped on oil guide pipe 5 The top cover fixing sleeve of Buchholz relay 6 between oil tank of transformer 1 and conservator 4, Buchholz relay 6 is equipped with vent valve 7, watt The terminal box 8 positioned at 7 side of vent valve is fixedly installed on the top cover of this relay 6, the bottom of 6 top cover of Buchholz relay is fixed There are two fixed block 9, the bottom end of two fixed blocks 9 has been respectively fixedly connected with connecting plate 10 for connection, and the front of connecting plate 10 is fixed It is connected with the block positioned at 12 side of upper link, and the side of block and the side of rotary shaft 11 are in the same plane, make When obtaining the inside of Buchholz relay 6 full of the state of transformer oil, baffle 132 is in vertical state, to go out in transformer When the catastrophe failures such as existing short circuit, the gas flow rate inside oil guide pipe 5 is very fast, baffle 132 is washed upside down, convenient for Buchholz relay 6 to tight Weight failure makes a response and alarms rapidly, reduces loss, and the top and bottom end of two connecting plates 10 are movably installed with rotary shaft 11, the middle part fixing sleeve of a rotary shaft 11 is equipped with the upper link 12 being located between two connecting plates 10, and upper link 12 is remote One end from rotary shaft 11 is fixedly connected with upper lubricating cup 121, and the middle part fixing sleeve of another rotary shaft 11 is equipped with lower link 13, The angle of lower link 13 and baffle 132 is 45 degree, and lower link 13 is parallel with upper link 12,13 He of lower link Upper link 12 is respectively fixedly connected with lower lubricating cup 131 and upper lubricating cup 121, by the effect of lower lubricating cup 131 and upper lubricating cup 121, just Corresponding reaction is made in the weight failure respectively to transformer, lower link 13 is fixedly connected with far from one end of rotary shaft 11 Lower lubricating cup 131, the top of lower link 13 are fixedly connected with the baffle 132 above rotary shaft 11, two rotary shafts 11 One end extends respectively to the positive side of connecting plate 10 and fixing sleeve equipped with inclined-plane gear 111, the shape of inclined-plane gear 111 and big It is small all the same with the shapes and sizes of angular wheel 153, and the outer of inclined-plane gear 111 is engaged with the outer of angular wheel 153, After upper lubricating cup 121 or lower lubricating cup 131 move down so that rotary shaft 11 rotates, pass through nibbling for inclined-plane gear 111 and angular wheel 153 It closes, control seal pipe 152 rotates, and contacts to control conductive sheet 1563 and fixing axle 1553, so that the first conducting wire 155 and second is led Access is formed between line 156, issues corresponding signal, it is ensured that the normal use of Buchholz relay 6, a connecting plate 10 are positive The equal fixing sleeve in top and bottom is equipped with one group of limit sleeve 14, and the quantity of one group of limit sleeve 14 is two, and two limit sleeves 14 are in Vertical direction is distributed in the front of connecting plate 10, is movably installed with circuit control device 15 respectively between two groups of limit sleeves 14, returns Road control device 15 includes rotary joint 151 and movable set of the movable set on a limit sleeve 14 in another limit Seal pipe 152 on set 14, the bottom end of rotary joint 151 and the top of seal pipe 152 are fixedly attached, fixed in seal pipe 152 It is set with angular wheel 153, the top of rotary joint 151 and the bottom end of seal pipe 152 are sealedly connected with sealing-plug 154, and two Fixing sleeve is connected to the first conducting wire 155 and the second conducting wire 156, the first conducting wire 155 and the second conducting wire respectively at the middle part of a sealing-plug 154 156 one end for being located at outside rotary joint 151 and seal pipe 152 are equipped with protective case, avoid the first conducting wire 155 and second and lead Line 156 insulate exposed and there are DC voltages, mechanical admixture and free carbon easily in absorption oil, to form conduction as the time increases The problem of covering substantially reduces the insulation performance of Buchholz relay secondary circuit, impacts to circuit control device 15, and The other end of first conducting wire 155 and the second conducting wire 156 all extends to the inside of terminal box 8, by installing in the inside of terminal box 8 Jump is alarmed or controlled to corresponding alarm and control switch after the first conducting wire 155 and the second conducting wire 156 form access It opens transformer respectively to switch, one end of the first conducting wire 155 is electrically connected with upper dead axle 1551, upper dead axle 1551, upper switch block 1552, fixing axle 1553, the next switch block 1562 and the next dead axle 1561 are electric conductor, it is ensured that conductive sheet 1563 and fixing axle When 1553 contact, the first conducting wire 155 and the second conducting wire 156 form access, the top of upper dead axle 1551 and a sealing-plug 154 It is fixedly connected in the middle part of bottom end, the bottom end of upper dead axle 1551 extends to the inside of seal pipe 152 and is fixedly connected with upper turn Block 1552, the outer of upper switch block 1552 and the internal activity of seal pipe 152 are socketed, and the diameter of upper switch block 1552 is equal to rotation The internal diameter of adapter 151 and seal pipe 152, the shapes and sizes of the shapes and sizes of upper switch block 1552 and the next switch block 1562 It is all the same, upper dead axle 1551 is limited using upper switch block 1552,1562 pairs of the next switch block the next dead axles 1561 carry out Limit, when transformer by subway because being shaken, conductive sheet 1563 will not be contacted with fixing axle 1553, prevent Buchholz relay 6 from going out It now malfunctions, the side of upper 1552 bottom of switch block is fixedly connected with fixing axle 1553, and fixing axle 1553 is divided with conductive sheet 1563 Not Wei Yu two sides inside seal pipe 152, and the bottom end of fixing axle 1553 is not contacted with the top of the next switch block 1562, is being oiled Cup 121 and lower lubricating cup 131 are under floating state, and conductive sheet 1563 and fixing axle 1553 do not contact, i.e., in the positive reason of transformer Under condition, Buchholz relay 6 is not in malfunction, and one end of the second conducting wire 156 is electrically connected with the next dead axle 1561, the next dead axle It is fixedly connected in the middle part of 1561 bottom end and another 154 top of sealing-plug, the top of the next dead axle 1561 is fixedly connected with position The side of the next switch block 1562 inside seal pipe 152, the next 1562 top of switch block is fixedly installed with conductive sheet 1563, conductive One end of piece 1563 is fixedly connected with the top of the next switch block 1562, and to be located at fixing axle 1553 low for the other end of conductive sheet 1563 The top at end, the bottom of 1563 other end of conductive sheet are fixedly connected with spring, and the top of the bottom end of spring and the next switch block 1562 Portion is fixedly connected, after the next dead axle 1561 turns an angle with seal pipe 152, fixing axle 1553 always with conductive sheet 1563 Contact, so that Buchholz relay 6 is acted when transformer breaks down.

In use, firstly, upper lubricating cup 121 and lower lubricating cup 131 are in oil body when the inside of Buchholz relay 6 is full of oil body Buoyancy is in the state of floating always, and then, when minor failure occurs in the inside of transformer, the methane gas of decomposition is slow Slowly it is moved at Buchholz relay 6, is gathered in the top inside Buchholz relay, forms certain pressure, transformer oil surface Height reduces, and upper lubricating cup 121 moves down under the effect of gravity, so that rotary shaft 11 drives inclined-plane gear 111 to rotate, passes through conical tooth Wheel 153 drives seal pipes 152 to rotate, so that upper dead axle 1551 drives upper switch block 1552 to rotate, conductive sheet 1563 and fixed Axis 1553 contacts, so that the first conducting wire 155 and the second conducting wire 156 form access, issues light Gas Signal, alarms, similarly, When inside transformer occurs serious, the methane gas of decomposition moves quickly into Buchholz relay 6,6 inside pasta of Buchholz relay Rapid decrease, lower lubricating cup 131 move down, so that the conductive sheet 1563 inside 10 lower section seal pipe 152 of connecting plate and fixing axle 1553 Contact issues grave gas signal, carries out alarm tripping transformer switch, finally, when short trouble occurs in the inside of transformer, Fault point high-temperature electric arc will so that transformer move, due to oil viscosity, formed oil stream, impact baffle plate 132, baffle 132 around Rotary shaft 11 rotates, so that rotary shaft 11 drives inclined-plane gear 111 to rotate, drives 152 turns of seal pipe by angular wheel 153 Dynamic, so that upper dead axle 1551 drives upper switch block 1552 to rotate, conductive sheet 1563 is contacted with fixing axle 1553, so that first leads Line 155 and the second conducting wire 156 form access, issue grave gas signal.

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.

It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims

1. a kind of electric power electric transformer for urban track traffic, including oil tank of transformer (1), it is characterised in that: described It is fixedly installed at the top of oil tank of transformer (1) top plate (2), the side at the top of the top plate (2) is fixedly installed with support frame (3), it is fixedly installed with conservator (4) at the top of support frame as described above (3), the inside of the oil tank of transformer (1) is interior with conservator (4) Portion, which connects, to be had oil guide pipe (5), and fixing sleeve is equipped with watt between oil tank of transformer (1) and conservator (4) on the oil guide pipe (5) The top cover fixing sleeve of this relay (6), the Buchholz relay (6) is equipped with vent valve (7), the top of the Buchholz relay (6) The terminal box (8) being fixedly installed with positioned at vent valve (7) side is covered, the bottom of Buchholz relay (6) top cover is fixed to be connected It connects there are two fixed block (9), the bottom end of two fixed blocks (9) has been respectively fixedly connected with connecting plate (10), two companies The top and bottom end of fishplate bar (10) are movably installed with rotary shaft (11), and the middle part fixing sleeve of a rotary shaft (11) is equipped with Upper link (12) between two connecting plates (10), the upper link (12) are fixed far from the one end of rotary shaft (11) Lubricating cup (121) are connected with, the middle part fixing sleeve of another rotary shaft (11) is equipped with lower link (13), and the bottom is even Bar (13) is fixedly connected with lower lubricating cup (131) far from the one end of rotary shaft (11), and the top of the lower link (13) is fixed to be connected It is connected to the baffle (132) being located above rotary shaft (11), one end of two rotary shafts (11) extends respectively to connecting plate (10) simultaneously fixing sleeve is equipped with inclined-plane gear (111) for positive side, and the positive top and bottom of the connecting plate (10) are equal Fixing sleeve is equipped with one group of limit sleeve (14), and the quantity of limit sleeve described in one group (14) is two, and two limit sleeves (14) It is distributed in the front of connecting plate (10) in vertical direction, limit sleeve described in two groups is movably installed with circuit control between (14) respectively Device (15), the circuit control device (15) include rotary joint (151) of the movable set on a limit sleeve (14) with And seal pipe (152) of the movable set on another limit sleeve (14), the bottom end of the rotary joint (151) and seal pipe (152) top is fixedly attached, and fixing sleeve is equipped with angular wheel (153) on the seal pipe (152), the rotary joint (151) bottom end on top and seal pipe (152) is sealedly connected with sealing-plug (154), in two sealing-plugs (154) Fixing sleeve is connected to the first conducting wire (155) and the second conducting wire (156) respectively in portion, and one end of first conducting wire (155) is electrically connected with It is fixedly connected in the middle part of upper dead axle (1551), the top of the upper dead axle (1551) and sealing-plug (154) bottom end, institute The bottom end for stating upper dead axle (1551) extends to the inside of seal pipe (152) and is fixedly connected with upper switch block (1552), described The side of upper switch block (1552) bottom is fixedly connected with fixing axle (1553), one end electrical connection of second conducting wire (156) Have the next dead axle (1561), the fixed company in the bottom end of the bottom dead axle (1561) and the middle part on another sealing-plug (154) top It connects, the top of the bottom dead axle (1561) is fixedly connected with the next switch block (1562) internal positioned at seal pipe (152), described Side at the top of the next switch block (1562) is fixedly installed with conductive sheet (1563).

2. a kind of electric power electric transformer for urban track traffic according to claim 1, it is characterised in that: described The shapes and sizes of inclined-plane gear (111) and the shapes and sizes of angular wheel (153) are all the same, and inclined-plane gear (111) It is engaged with the outer of angular wheel (153) outer.

3. a kind of electric power electric transformer for urban track traffic according to claim 1, it is characterised in that: described The front of connecting plate (10) is fixedly connected with the block positioned at upper link (12) side, and the side of block and rotary shaft (11) Side it is in the same plane.

4. a kind of electric power electric transformer for urban track traffic according to claim 1, it is characterised in that: described The angle of lower link (13) and baffle (132) is 45 degree, and lower link (13) is parallel with upper link (12).

5. a kind of electric power electric transformer for urban track traffic according to claim 1, it is characterised in that: described First conducting wire (155) and the second conducting wire (156) are located at rotary joint (151) and one end of seal pipe (152) outside is equipped with guarantor Sheath, and the other end of the first conducting wire (155) and the second conducting wire (156) all extends to the inside of terminal box (8).

6. a kind of electric power electric transformer for urban track traffic according to claim 1, it is characterised in that: described Upper dead axle (1551), upper switch block (1552), fixing axle (1553), the next switch block (1562) and the next dead axle (1561) are Electric conductor.

7. a kind of electric power electric transformer for urban track traffic according to claim 1, it is characterised in that: described The outer of upper switch block (1552) and the internal activity of seal pipe (152) are socketed, and the diameter of upper switch block (1552) is equal to rotation The internal diameter of adapter (151) and seal pipe (152), the shapes and sizes of the upper switch block (1552) and the next switch block (1562) Shapes and sizes it is all the same.

8. a kind of electric power electric transformer for urban track traffic according to claim 1, it is characterised in that: described Fixing axle (1553) and conductive sheet (1563) are located at the internal two sides of seal pipe (152), and the bottom end of fixing axle (1553) It is not contacted with the top of the next switch block (1562).

9. a kind of electric power electric transformer for urban track traffic according to claim 1, it is characterised in that: described It is fixedly connected at the top of one end of conductive sheet (1563) and the next switch block (1562), and the other end of conductive sheet (1563) is located at admittedly The bottom of the top of dead axle (1553) low side, conductive sheet (1563) other end is fixedly connected with spring, and the bottom end of spring It is fixedly connected at the top of the next switch block (1562).