CN206272133U - A kind of PT handcarts - Google Patents

Abstract

The utility model provides a kind of PT handcarts, including vehicle frame, voltage transformer, insulating cylinder, fuse and isolating device.Vehicle frame, with under(-)chassis；Voltage transformer, it is longitudinally fixed on under(-)chassis；Insulating cylinder, with inner chamber is installed, is arranged on vehicle frame by the first mounting structure, and positioned at voltage transformer top；Fuse, installed in inner cavity is installed, one end electrically connects with voltage transformer；Isolating device, is arranged on insulating cylinder by the second mounting structure, positioned at voltage transformer top, and is set laterally side by side with insulating cylinder.PT handcarts of the present utility model, creative is longitudinally mounted on under(-)chassis voltage transformer, and insulating cylinder and isolating device are arranged on voltage transformer top laterally side by side, this structure setting mode, compared with prior art, the transverse width of PT handcarts is farthest reduced so that PT handcarts could be used that when inside switch cabinet space is very narrow, while reducing production cost.

Description

A kind of PT handcarts

Technical field

The utility model is related to switch cubicle technical field, and in particular to a kind of PT handcarts.

Background technology

In the prior art, withdraw-type switch cabinet generally uses handcart structure, and PT handcarts are the one kind in various handcart schemes, The components such as voltage transformer (PT), fuse, disconnecting switch are installed thereon, when maintenance is needed, maintainer is from removing Extract PT handcarts in formula switch cubicle out, it is easy to operate so as to component is checked or changed, greatly reduce the power failure of equipment Time.

Chinese patent literature CN105406385A discloses a kind of PT handcarts and the power distribution cabinet with the PT handcarts, such as Fig. 1 Shown, PT handcarts include vehicle frame 08 and the insulating cylinder 05, disconnecting switch 03, the and of voltage transformer 07 that are installed on vehicle frame 08 Resonance eliminator 011, disconnecting switch 03 includes moving conductive rod 031, and drives moving conductive rod 031 to move up and down, so that voltage is mutual The drive 032 that sensor 07 is switched on or switched off with bus inserted terminal.

The defect of technical scheme is disclosed in above-mentioned patent document：1) horizontally set of voltage transformer 07, and with it is exhausted Edge cylinder 05 is arranged on the bottom of vehicle frame 08 laterally side by side, the transverse width of PT handcarts is considerably increased, when inside switch cabinet space is narrow Hour, the larger PT handcarts of this transverse width cannot be used, and cause the scope of application narrow, and increased production cost；2) move The periphery of conducting rod 031 is arranged with insulating cylinder 05, because the one end of insulating cylinder 05 is fixedly installed on the bottom of vehicle frame 08, works as moving conductive rod 031 with the inserted terminal when electrically connecting, the weak vibrations of the bottom of vehicle frame 08, all can related moving conductive rod 031 rock, have influence on dynamic The contact with the inserted terminal of conducting rod 031, causes power taking effect bad；3) moving conductive rod 031 is using aluminium machining Into the drive 032 coordinated with the transmission of the moving conductive rod 031 is also adopted by metal material and is made, and works as the moving conductive rod 031 When powered, drive 032 also can be powered, and it is exhausted that the electric field that powered drive 032 is produced easily has influence on other in switch cubicle Edge equipment, can seriously damage insulating materials；4) it is insulated from each other due to being needed between three moving conductive rods 031, and be used to drive biography The transmission bar part that driving wheel 032 is rotated needs to be the metallic rod that can provide stably power again, therefore in above-mentioned patent document Drive link has been designed to three sections of metallic rod modes end to end with some sections of insulating bars, the drive link manufacture difficulty of this structure Greatly, high cost, and be easily deformed during use, service life is short；5) drive 032, moving conductive rod 031 are arranged at insulating cylinder In 05, installation replacing flow is cumbersome, and disassembly and assembly time is long；6) in order to ensure the normal operation of voltage transformer, two neighboring voltage Certain installation interval is needed between transformer, in above-mentioned patent document, is also pacified between two neighboring voltage transformer 07 Resonance eliminator 011 is filled, in order to ensure safety, two distances of voltage transformer must have been increased, so as to increased PT handcarts Longitudinal length, further increases production cost.

Utility model content

Therefore, the technical problems to be solved in the utility model is to overcome PT handcarts structure setting of the prior art not conform to Reason, transverse width is big, cannot be used when inside switch cabinet narrow space, causes the technological deficiency that the scope of application is narrow, so that There is provided a kind of structure setting rationally, transverse width is small, PT handcarts applied widely.

Therefore, the utility model provides a kind of PT handcarts, including：

Vehicle frame, with under(-)chassis；

Voltage transformer, it is longitudinally fixed on the under(-)chassis；

Insulating cylinder, with inner chamber is installed, is arranged on the vehicle frame by the first mounting structure, and mutual positioned at the voltage Sensor top；

Fuse, installed in the installation inner cavity, one end electrically connects with the voltage transformer；

Isolating device, is arranged on outside the insulating cylinder by the second mounting structure, positioned at voltage transformer top, And set laterally side by side with the insulating cylinder；The other end with the fuse is electrically connected, and described molten for being switched on or switched off The electrical connection of disconnected device and inlet wire bus.

Used as a kind of preferred scheme, the voltage transformer is distributed side by side along handcart propulsion pull-out direction, and the voltage is mutual Sensor for electrically connected with the fuse wiring position, be arranged on longitudinal side outwardly of the voltage transformer, and It is relative up and down with the installation inner chamber.

As a kind of preferred scheme, also including mechanism case and support member, pull-out direction, the mechanism case are advanced along PT handcarts With the two ends that the support member is respectively fixedly disposed at the vehicle frame.

Used as a kind of preferred scheme, first mounting structure includes：

First installing plate, two ends are fixedly connected with the mechanism case and the support member respectively；

Fixed connection structure, for first installing plate will to be fixed in the middle part of the insulating cylinder.

Used as a kind of preferred scheme, the fixed connection structure includes：

Mounting seat, is fixed on the insulation drum outer wall middle part；

First screwed hole, with several, is arranged in the mounting seat；

First through hole, is arranged on first installing plate, and relative one by one with first screwed hole；

First fixing bolt, through the first through hole after with first screw hole, so as to by the insulating cylinder It is fixed on first installing plate.

Used as a kind of preferred scheme, also including the second installing plate, second installing plate is parallel with first installing plate Set, two ends are equally fixedly connected with the mechanism case and the support member respectively；

The mechanism case, the support member, first installing plate and second installing plate are on the under(-)chassis Side encloses to form cagelike structure, and the isolating device is arranged on the middle part of the cagelike structure.

Used as a kind of preferred scheme, the height of second installing plate is set less than first installing plate, described the Be additionally provided with the 3rd installing plate above two installing plates, the two ends of the 3rd installing plate equally with the mechanism case and the support Part is fixedly connected, and the 3rd installing plate is used for zinc oxide surge arresters.

Used as a kind of preferred scheme, the isolating device includes：

Conductive contact arm, the other end with the fuse is electrically connected；

Drive mechanism, for driving the conductive contact arm to move up and down, so as to be switched on or switched off the fuse with it is described The electrical connection of inlet wire bus.

Used as a kind of preferred scheme, second mounting structure includes：

Socket part, is set on the conductive contact arm, with the inwall relative with the conductive contact arm, is set on the inwall There is the annular groove around the conductive contact arm；

Resilient coil, inside the annular groove, and electrically connects with the outer wall elasticity of the conductive contact arm；

Connecting portion, is connected with the socket part, for being fixedly connected with the insulating cylinder；

Electric-conductor, through the connecting portion, one end electrically connects with the other end of the fuse, the other end and the elasticity Coil is electrically connected.

Used as a kind of preferred scheme, the mechanism case is provided with peep hole, and protective glass is provided with the peep hole, uses In the motion for observing the isolating device whether in place.

The PT handcarts that the utility model is provided, with advantages below：

1. PT handcarts of the present utility model, including vehicle frame, voltage transformer, insulating cylinder, fuse and isolating device.Car Frame, with under(-)chassis；Voltage transformer, it is longitudinally fixed on under(-)chassis；Insulating cylinder, with inner chamber is installed, passes through First mounting structure is arranged on vehicle frame, and positioned at voltage transformer top；Fuse, installed in installation inner cavity, one end Electrically connected with voltage transformer；Isolating device, is arranged on insulating cylinder, on voltage transformer by the second mounting structure Side, and set laterally side by side with insulating cylinder；Electrically connected with the other end of fuse, and for being switched on or switched off fuse and inlet wire The electrical connection of bus.PT handcarts of the present utility model, creative is longitudinally mounted on under(-)chassis voltage transformer, and will Insulating cylinder and isolating device are arranged on above voltage transformer laterally side by side, this structure setting mode, compared with prior art, Farthest reduce the transverse width of PT handcarts so that PT handcarts can also make when inside switch cabinet space is very narrow With while reducing production cost, structure setting is rationally, applied widely；

PT handcarts of the present utility model, isolating device is arranged on outside insulating cylinder by the second mounting structure, with existing skill Art is compared, and dismounting maintenance more facilitates, and makes have larger clearance space between fuse and isolating device, is conducive to setting Standby safety.

2. PT handcarts of the present utility model, voltage transformer is distributed side by side along handcart propulsion pull-out direction, voltage transformer For the wiring position that is electrically connected with fuse, be arranged on the side longitudinal outwardly of voltage transformer, and upper and lower with inner chamber is installed Relatively, this setup, the wiring position with voltage transformer in the prior art is located between voltage transformer and insulating cylinder Small space is compared, and outwardly, operating space is sufficient for wiring position of the present utility model, the dismounting maintenance between fuse and wiring position All facilitate very much；Wiring position is relative up and down with installation inner chamber, not only reduces the length of electrical connector between fuse and wiring position Degree, can save material, also cause that PT handcart structures are closely reasonable.

3. PT handcarts of the present utility model, also including mechanism case and support member, pull-out direction, mechanism case are advanced along PT handcarts With the two ends that support member is respectively fixedly disposed at the vehicle frame.Set up an organization after case and support member, when PT handcarts are advanced and pulled out, Due to support member and the barrier effect of mechanism case, voltage transformer, the insulation between mechanism case and support member can be protected The parts such as cylinder, it is to avoid touch other objects.

4. PT handcarts of the present utility model, the first mounting structure includes：First installing plate, two ends respectively with mechanism case and branch Support member is fixedly connected；Fixed connection structure, for the first installing plate will to be fixed in the middle part of insulating cylinder；First installing plate is by machine Structure case and support member link together so that handcart periphery forms a more firm protect-ing frame structure such that it is able to by voltage The parts such as transformer, insulating cylinder are reliably protected very much；Installed by fixed connection structure and first at the middle part of insulating cylinder Plate is fixedly connected, and improves the fixed effect of insulating cylinder, and the vibration of handcart under(-)chassis is by mechanism case, support member, the first peace After filling the transmission of plate, weaken significantly, insulating cylinder is arranged on the position, shadow of the handcart vibration for insulating cylinder can be reduced Ring, greatly enhance insulating cylinder stability.

5. PT handcarts of the present utility model, also including the second installing plate, the second installing plate be arranged in parallel with the first installing plate, Two ends are equally fixedly connected with mechanism case and support member respectively；Mechanism case, support member, the first installing plate and the second installing plate are the bottom of at Portion framework top encloses to form cagelike structure, and isolating device is arranged on the middle part of cagelike structure.Compared with prior art, this practicality The cagelike structure of new formation, firmer protect-ing frame structure is formd in handcart periphery, is conducive to voltage transformer, insulation The protection of the parts such as cylinder；Isolating device is arranged on the middle part of cagelike structure, the live part of isolating device has been placed on equipment Middle part, more preferably, the probability that electricity is touched in generation by mistake is substantially reduced device security.

6. PT handcarts of the present utility model, the height of the second installing plate is set less than the first installing plate, in the second installing plate Top be additionally provided with the 3rd installing plate, the two ends of the 3rd installing plate are equally fixedly connected with mechanism case and support member, the 3rd install Plate is used for zinc oxide surge arresters.Be fixed together for mechanism case and support member by the 3rd installing plate, further strengthens outside handcart Enclose the protect-ing frame structure to be formed such that it is able to reliably protect very much the parts such as voltage transformer, insulating cylinder；Isolation is filled The middle part for being arranged on cagelike structure is put, the live part of isolating device has been placed on equipment middle part, device security more preferably, occurs The probability for touching electricity by mistake is substantially reduced.

7. PT handcarts of the present utility model, the second mounting structure includes：Socket part, is set on conductive contact arm, with The relative inwall of conductive contact arm, is provided around the annular groove of conductive contact arm on inwall；Resilient coil, in annular groove Portion, and electrically connected with the outer wall elasticity of conductive contact arm；Connecting portion, is connected with socket part, for being fixedly connected with insulating cylinder；It is conductive Part, through connecting portion, one end is electrically connected with the other end of institute's fuse, and the other end is electrically connected with resilient coil.Elastica is set After circle so that conductive contact arm can keep good electrical connection when moving up and down with socket part.

8. PT handcarts of the present utility model, mechanism case is provided with peep hole, protective glass is provided with peep hole, for seeing Whether in place to examine the motion of the isolating device, by setting protective glass, ensure that staff in observation isolating device Safety during motion.

Brief description of the drawings

In order to illustrate more clearly of the technical scheme in prior art or the utility model specific embodiment, below to existing There is the accompanying drawing used in technology or specific embodiment description to be briefly described, it should be apparent that, for the common skill in this area For art personnel, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the overall structure diagram of PT handcarts in the prior art.

Fig. 2 is the side view of the utility model PT handcarts.

Fig. 3 is the stereogram of Fig. 2.

Fig. 4 is the stereogram of another angles of Fig. 3.

Fig. 5 is the top view of Fig. 2.

Fig. 6 is that isolating device coordinates the stereogram installed with insulating cylinder.

Fig. 7 is another stereogram of Fig. 6.

Fig. 8 is the stereogram of conductive contact arm.

Reference：03rd, disconnecting switch；031st, moving conductive rod；032nd, drive；05th, insulating cylinder；07th, voltage transformer； 08th, vehicle frame；011st, resonance eliminator；1st, vehicle frame；10th, under(-)chassis；11st, voltage transformer；12nd, insulating cylinder；The 120th, inner chamber is installed； 13rd, fuse；14th, mechanism case；140th, peep hole；141st, protective glass；15th, support member；16th, the first installing plate；17th, the second peace Dress plate；18th, the 3rd installing plate；19th, arrester；2nd, mounting seat；20th, the first screwed hole；21st, first through hole；3rd, conductive contact arm； 31st, polygonal hole；32nd, groove is stopped；40th, socket part；41st, resilient coil；42nd, connecting portion；43rd, electric-conductor；5th, screw insulator bar； 51st, drive rod；6th, the first clamping-line structure；61st, the first clamp；7th, the second clamping-line structure；71st, the second clamp.

Specific embodiment

The technical solution of the utility model is described with reference to Figure of description, it is clear that following embodiments are not It is the whole embodiment of the utility model.Based on the embodiment described by the utility model, those of ordinary skill in the art are not having There is the every other embodiment made and being obtained under the premise of other creative works, belong to protection domain of the present utility model.

It should be noted that in description of the present utility model, term " first ", " second " are only used for describing purpose, and It is not intended that indicating or implying relative importance.Additionally, involved in the utility model different embodiments disclosed below As long as and technical characteristic do not constitute each other conflict can just be combined with each other.

Embodiment

The present embodiment provides a kind of PT handcarts, as shown in Figure 2-5, including：Vehicle frame 1, with under(-)chassis 10；Mutual induction of voltage Device 11, it is longitudinally fixed on the under(-)chassis 10；Insulating cylinder 12, with inner chamber 120 is installed, by the first mounting structure On the vehicle frame 1, and positioned at the top of the voltage transformer 11；Fuse 13, in the installation inner chamber 120 Portion, one end electrically connects with the voltage transformer 11；Isolating device, is arranged on outside the insulating cylinder 12 by the second mounting structure Portion, positioned at the top of the voltage transformer 11, and is set laterally side by side with the insulating cylinder 12；It is another with the fuse 13 End electrical connection, and for being switched on or switched off the electrical connection of the fuse 13 and inlet wire bus.The PT handcarts of the present embodiment, create Be longitudinally mounted to for voltage transformer 11 on under(-)chassis 10 by property, and insulating cylinder 12 and isolating device are arranged on laterally side by side The top of voltage transformer 11, this structure setting mode compared with prior art, farthest reduces the transverse direction of PT handcarts Width so that PT handcarts could be used that when inside switch cabinet space is very narrow, while production cost is reduced, structure setting Rationally, it is applied widely.

In the present embodiment, isolating device is arranged on outside insulating cylinder 12 by the second mounting structure, compared with prior art, Dismounting maintenance more facilitates, and makes have larger clearance space between fuse 13 and isolating device, is conducive to equipment to pacify Entirely.

The PT handcarts of the present embodiment, the voltage transformer 11 is distributed side by side along handcart propulsion pull-out direction, the voltage Transformer 11 for electrically connected with the fuse 13 wiring position, be arranged on the longitudinal direction outwardly of the voltage transformer 11 Side, and it is relative about 120 with the installation inner chamber.The wiring position of voltage transformer 07 is located in this setup, with Fig. 1 Voltage transformer 07 is compared with the small space of insulating cylinder 05, and outwardly, operating space is sufficient, fuse for the wiring position of the present embodiment Dismounting maintenance between 13 and wiring position is all facilitated very much；Wiring position is relative about 120 with installation inner chamber, not only reduces fusing The length of electrical connector, can save material between device 13 and wiring position, also cause that PT handcart structures are closely reasonable.

The PT handcarts of the present embodiment, also including mechanism case 14 and support member 15, pull-out direction, the machine are advanced along PT handcarts Structure case 14 and the support member 15 are respectively fixedly disposed at the two ends of the vehicle frame 1.Set up an organization after case 14 and support member 15, When the propulsion of PT handcarts is pulled out, due to support member 15 and the barrier effect of mechanism case 14, can protect positioned at mechanism case 14 and support The parts such as voltage transformer 11, insulating cylinder 12 between part 15, it is to avoid touch other objects.

In the present embodiment, first mounting structure includes：First installing plate 16, two ends respectively with the mechanism case 14 and The support member 15 is fixedly connected；Fixed connection structure, installs for the middle part of the insulating cylinder 12 to be fixed on into described first On plate 16.

First installing plate 16 links together mechanism case 14 and support member 15 so that PT handcarts periphery forms one more Firm protect-ing frame structure such that it is able to reliably protect very much the parts such as voltage transformer 11, insulating cylinder 12；Insulating cylinder 12 middle part is fixedly connected by fixed connection structure with the first installing plate, improves the fixed effect of insulating cylinder, handcart bottom The vibration of framework 10 by after mechanism case 14, support member 15, the transmission of the first installing plate 16, weakening, by insulating cylinder significantly 12 are arranged on the position, can reduce the vibration of PT handcarts for the influence of insulating cylinder 12, greatly enhance the stability of insulating cylinder 12.

In the present embodiment, as shown in fig. 6, the fixed connection structure includes：Mounting seat 2, is fixed on the insulating cylinder 12 Outer wall middle part；First screwed hole 20, with several, is arranged in the mounting seat 2；First through hole 21, is arranged on described It is on one installing plate 16 and relative one by one with first screwed hole 20；First fixing bolt, through the first through hole 21 after with First screwed hole 20 is spirally connected, so as to the insulating cylinder 12 is fixed on first installing plate 16.

The PT handcarts of the present embodiment, as shown in figure 4, also include the second installing plate 17, second installing plate 17 with it is described First installing plate 16 be arranged in parallel, and two ends are equally fixedly connected with the mechanism case 14 and the support member 15 respectively；The machine Structure case 14, the support member 15, first installing plate 16 and second installing plate 17 enclose in the top of the under(-)chassis 10 Conjunction forms cagelike structure, and the isolating device is arranged on the middle part of the cagelike structure.Compared with prior art, the present embodiment shape Into cagelike structure, form firmer protect-ing frame structure in PT handcarts periphery, be conducive to voltage transformer 11, insulating cylinder The protection of 12 grade parts；Isolating device is arranged on the middle part of cagelike structure, the live part of isolating device has been placed on equipment Middle part, more preferably, the probability that electricity is touched in generation by mistake is substantially reduced device security.

In the present embodiment, the height of second installing plate 17 is set less than first installing plate 16, described second The top of installing plate 17 is additionally provided with the 3rd installing plate 18, the two ends of the 3rd installing plate 18 equally with the mechanism case 14 and institute State support member 15 to be fixedly connected, the 3rd installing plate 18 is used for zinc oxide surge arresters 19.3rd installing plate 18 is by the He of mechanism case 14 Support member 15 is fixed together, and further strengthens the protect-ing frame structure that PT handcarts periphery is formed, by voltage transformer 11, absolutely Edge 12 grade parts of cylinder are reliably protected very much；First installing plate 16, the second installing plate 17, the 3rd installing plate 18 and keep away Thunder device 19 encloses isolating device so that the live part of isolating device is located at equipment middle part, and security more preferably, is missed The probability for touching electricity is substantially reduced.

The PT handcarts of the present embodiment, the isolating device includes：Conductive contact arm 3, the other end electricity with the fuse 13 Connection；Drive mechanism, for driving the conductive contact arm 3 to move up and down, so as to be switched on or switched off the fuse 13 with it is described The electrical connection of inlet wire bus.

The PT handcarts of the present embodiment, as shown in fig. 7, second mounting structure includes：Socket part 40, is set in described leading On electric contact arm 3, with the inwall relative with the conductive contact arm 3, the annular of the conductive contact arm 3 is provided around on the inwall Groove；Resilient coil 41, inside the annular groove, and electrically connects with the outer wall elasticity of the conductive contact arm 3；Connection Portion 42, is connected with the socket part 40, for being fixedly connected with the insulating cylinder 12；Electric-conductor 43, through the connecting portion 42, One end is electrically connected with the other end of the fuse 13, and the other end is electrically connected with the resilient coil 41.By setting elastica After circle 41 so that conductive contact arm 3 can keep good electrical connection when moving up and down with socket part 40.

In the present embodiment, the mechanism case 14 is provided with peep hole 140, and protective glass is provided with the peep hole 140 141, for observe the isolating device motion whether in place, ensure that staff observe isolating device move when Safety.

In the present embodiment, resonance eliminator is arranged on inside mechanism case 14, further reduces the longitudinal length of PT handcarts, is reduced Production cost.

The PT handcarts of the present embodiment, the drive mechanism includes：Screw insulator bar 5；Driving structure, it is described exhausted for driving Edge threaded rod 5 is rotatable around its axis；3rd mounting structure, for the conductive contact arm 3 to be installed into the screw insulator bar 5 On, and when the screw insulator bar 5 is rotated, the conductive contact arm 3 is moved axially along the screw insulator bar 5.

The PT handcarts of the present embodiment, as shown in figure 8, the 3rd mounting structure includes：Polygonal hole 31, is arranged on described The bottom of conductive contact arm 3, and with the inner space of the conductive contact arm 3；Nut is installed, with internal thread, installed in described polygon Inside shape hole 31, and can not be rotated relative to the polygonal hole 31；Barrier structure, is arranged on the socket part 40, for When the screw insulator bar 5 is rotated, the conductive contact arm 3 is prevented to follow the screw insulator bar 5 together to rotate；The insulation spiral shell After rasp bar 5 is connected with the installation nut screw connection, the inner chamber is entered into, it is described to lead when driving the screw insulator bar 5 to rotate Electric contact arm 3 is moved axially in screw insulator bar 5 described in barrier structure effect lower edge.When the internal thread because long-time is used During abrasion, installation nut can be changed and conductive contact arm 3 need not be changed, maintenance replacement cost is lower.

As deformation design scheme, the 3rd mounting structure can also be including：Second through hole, is arranged on the conduction The bottom of contact arm 3, the conductive contact arm 3 has inner chamber, and inwall is provided with internal thread；Barrier structure, is arranged on the socket part On 40, for when the screw insulator bar 5 is rotated, preventing the conductive contact arm 3 from following the screw insulator bar 5 together to turn It is dynamic；After the screw insulator bar 5 is spirally connected with the cooperation of the conductive contact arm 3, the screw insulator bar 5 is entered into the inner chamber Portion, when the driving structure drives the screw insulator bar 5 to rotate, the conductive contact arm 3 is under barrier structure effect Moved axially along the screw insulator bar 5.

In this implementation, the barrier structure includes：Stop groove 32, be arranged on the outer wall of the conductive contact arm 3, and along described Conductive contact arm 3 is axially extending；Stopper, is fixedly installed on the socket part 40, with insert stop groove 32 inside with It is described to stop that groove 32 coordinates the stop part for stopping.

In the present embodiment, the driving structure includes：Driving wheel, fixation is set in the outer of the bottom of screw insulator bar 5 On wall；Drive rod 51, is vertically arranged with the screw insulator bar 5, and the drive rod 51 coordinates with the driving wheel, drives described Screw insulator bar 5 drives the conductive contact arm 3 to stretch around its axial-movement.In the present embodiment, the conductive contact arm 3 has Three, the corresponding driving wheel also has three, and the drive rod 51 has one, and the drive rod 51 passes through three drivings After wheel, while driving three conductive contact arms 3 to move up and down.51 all-metal materials of drive rod in the present embodiment, it is and existing Three sections of metallic rods are compared with the drive link that some sections of insulating bar endings are spliced and combined in having technology, and manufacturing process is simpler It is single, it is more durable, it is difficult torsional deformation or damage.

The PT handcarts of the present embodiment, also including fuse 13, the fuse 13 is by the 4th mounting structure mounted in described Inside insulating cylinder 12, one end electrically connects with the electric-conductor 43, and one end electrically connects with the voltage transformer 11.

The PT handcarts of the present embodiment, the 4th mounting structure includes：First clamping-line structure 6, it is described for fixedly mounting The other end of fuse 13, including two the first clamps 61 being oppositely arranged, two first clamps 61 form first and press from both sides Space of lines, first clamp 61 has elasticity；Second clamping-line structure 7, for fixedly mounting the other end of the fuse 13, Second clamping-line structure 7 has four the second longitudinally disposed clamps 71, and four second clamps 71 form second Clamp space, second clamp 71 has elasticity.

Obviously, above-described embodiment is only intended to clearly illustrate example, and not to the restriction of implementation method.It is right For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or Change.There is no need and unable to be exhaustive to all of implementation method.And the obvious change thus extended out or Among changing still in protection domain of the present utility model.

Claims (10)

1. a kind of PT handcarts, it is characterised in that：Including：

Vehicle frame (1), with under(-)chassis (10)；

Voltage transformer (11), it is longitudinally fixed on the under(-)chassis (10)；

Insulating cylinder (12), with inner chamber (120) are installed, is arranged on the vehicle frame (1) by the first mounting structure, and positioned at institute State voltage transformer (11) top；

Fuse (13), internal installed in the installation inner chamber (120), one end electrically connects with the voltage transformer (11)；

Isolating device, is arranged on the insulating cylinder (12) outside, positioned at the voltage transformer (11) by the second mounting structure Top, and set laterally side by side with the insulating cylinder (12)；The other end with the fuse (13) is electrically connected, and for connecting Or disconnect the electrical connection of the fuse (13) and inlet wire bus.

2. PT handcarts according to claim 1, it is characterised in that：The voltage transformer (11) advances pull-out side along handcart To being distributed side by side, the voltage transformer (11) for the wiring position that is electrically connected with the fuse (13), be arranged on described Longitudinal side outwardly of voltage transformer (11), and it is relative up and down with the installation inner chamber (120).

3. PT handcarts according to claim 2, it is characterised in that：Also include mechanism case (14) and support member (15), along PT Handcart advances pull-out direction, and the mechanism case (14) and the support member (15) are respectively fixedly disposed at the two of the vehicle frame (1) End.

4. PT handcarts according to claim 3, it is characterised in that：First mounting structure includes：

First installing plate (16), two ends are fixedly connected with the mechanism case (14) and the support member (15) respectively；

Fixed connection structure, for first installing plate (16) will to be fixed in the middle part of the insulating cylinder (12).

5. PT handcarts according to claim 4, it is characterised in that：The fixed connection structure includes：

Mounting seat (2), is fixed on the insulating cylinder (12) outer wall middle part；

First screwed hole (20), with several, is arranged in the mounting seat (2)；

First through hole (21), is arranged on first installing plate (16), and relative one by one with first screwed hole (20)；

First fixing bolt, through the first through hole (21) after be spirally connected with first screwed hole (20) so that will it is described absolutely Edge cylinder (12) is fixed on first installing plate (16).

6. PT handcarts according to claim 3, it is characterised in that：Also include the second installing plate (17), described second installs Plate (17) be arranged in parallel with first installing plate (16), two ends equally respectively with the mechanism case (14) and the support member (15) it is fixedly connected；

The mechanism case (14), the support member (15), first installing plate (16) and second installing plate (17) are in institute State under(-)chassis (10) top to enclose to form cagelike structure, the isolating device is arranged on the middle part of the cagelike structure.

7. PT handcarts according to claim 6, it is characterised in that：The height of second installing plate (17) is less than described the One installing plate (16) is set, and the 3rd installing plate (18) is additionally provided with above second installing plate (17), and the described 3rd installs The two ends of plate (18) are equally fixedly connected with the mechanism case (14) and the support member (15), and the 3rd installing plate (18) is used In zinc oxide surge arresters (19).

8. PT handcarts according to claim 1, it is characterised in that：

The isolating device includes：

Conductive contact arm (3), the other end with the fuse (13) is electrically connected；

Drive mechanism, for driving the conductive contact arm (3) to move up and down, so as to be switched on or switched off the fuse (13) and institute State the electrical connection of inlet wire bus.

9. PT handcarts according to claim 8, it is characterised in that：Second mounting structure includes：

Socket part (40), is set on the conductive contact arm (3), described interior with the inwall relative with the conductive contact arm (3) The annular groove of the conductive contact arm (3) is provided around on wall；

Resilient coil (41), inside the annular groove, and electrically connects with the outer wall elasticity of the conductive contact arm (3)；

Connecting portion (42), is connected with the socket part (40), for being fixedly connected with the insulating cylinder (12)；

Electric-conductor (43), through the connecting portion (42), one end electrically connects with the other end of the fuse (13), the other end with Resilient coil (41) electrical connection.

10. PT handcarts according to claim 3, it is characterised in that：The mechanism case (14) is provided with peep hole (140), Protective glass (141) is installed on the peep hole (140), for observe the isolating device motion whether in place.