CN111332159A

CN111332159A - Low clearance elastic supporting device for contact net

Info

Publication number: CN111332159A
Application number: CN202010307031.7A
Authority: CN
Inventors: 李海洋; 许大光; 赖锦堂; 徐剑; 宋晔宏
Original assignee: ZHEJIANG WANGLONG RAIL TRANSIT FACILITIES CO Ltd
Current assignee: ZHEJIANG WANGLONG RAIL TRANSIT FACILITIES CO Ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2020-06-26

Abstract

The invention provides a low clearance elastic supporting device for a contact network, and belongs to the technical field of electrified railways. It has solved the relatively poor technical problem of current contact net elastic support device elasticity. This a low headroom elastic supporting device for contact net is including the insulating rod and the cantilever that connect gradually, be equipped with the location fastener on the cantilever, the end connection that the cantilever was kept away from to the insulating rod has the saddle to adjust the seat, still including the installation base, the commentaries on classics round pin that the level set up has on the installation base, and the peripheral cover that should change the round pin is equipped with can be relative change round pin pivoted clamp, be equipped with between commentaries on classics round pin and the clamp and radially carry out elastic support's elastic component to the clamp, one side of clamp outer peripheral face with the saddle adjusts the seat and links to each other, the elastic support has set firmly on the installation base, the lower extreme of elastic support with the opposite side of clamp links firmly or spacing top leans on to form elastic. The invention has better elastic simulation effect.

Description

Low clearance elastic supporting device for contact net

Technical Field

The invention belongs to the technical field of electrified railways, and relates to a low-clearance elastic supporting device for a contact network.

Background

The suspension of contact wires in the electrified low-clearance single-line tunnel mostly adopts a horizontal suspension and an arched single-support cantilever structure, and the running speed of the line is below 120 km/h. With the development of electrified railways in China, the running speed of trains puts higher requirements on a contact network system in a low-clearance single-line tunnel.

The applicant has previously developed an insulated cantilever assembly in a traffic contact system with application publication No. CN101412379A, which is arranged between a stand column and a pantograph of a locomotive, wherein the inner end of the cantilever is connected with the stand column, the outer end of the cantilever is provided with a wire clamping member, the middle part of the cantilever is provided with an umbrella skirt-shaped insulating member, an adjusting mechanism capable of adjusting the position of the cantilever is arranged between the inner end of the cantilever and the stand column, and the cantilever is further provided with a telescopic mechanism capable of adjusting the length of the cantilever. The product is flexibly adjusted and is suitable for installation in complex environment to meet the installation requirement of a contact network.

The contact wires in the horizontal suspension device are connected and fixed through the insulating positioner, and the insulating positioner is found to concentrate and attach all self weights to the contact wires at the contact wire positioning points in the actual operation process of the circuit, so that local hard points are formed on the contact net, the elasticity uniformity of the contact net is influenced, when the locomotive pantograph runs at a high speed, the contact wires in the hard point area are abnormally raised (lowered), the pantograph is off-line, arc ablation occurs, the abrasion between the contact wires and the pantograph is accelerated, and sometimes even the phenomena of pantograph collision and pantograph collision occur.

For this application publication No. CN109720238A, a Chinese patent discloses a low clearance single line tunnel contact line positioning device, which comprises an arched base, two connecting lugs, two rotating lugs, an elastic insulation limit positioner and a positioning wire clamp; the arched base is fixed on the tunnel wall through anchor bolts, the front end of the arched base is fixed with two connecting lugs through a bolt pair, and the front end of each connecting lug is hinged with a rotating lug through a pin shaft; the rear end of the elastic insulation limiting locator is a bending section, the end part of the bending section is hinged between lower lugs at the front end of the rotating double lugs through a bolt pin I, an elastic pull rod is arranged in the middle of the bending section, and the upper end of the elastic pull rod is hinged between upper lugs at the front end of the rotating double lugs through a bolt pin II; the positioning wire clamp is fixed below the front end of the elastic insulation limiting positioner.

The device can improve the elasticity of the contact wire clamping part, but the elasticity adjustment of the clamping part is realized only by the deformation of the spring, the simulation degree is poor, and the spring is easy to lose efficacy after long-term use. Those skilled in the art will often consider such problems as: 1. the parts are made of a light high-strength new material, so that the influence caused by the self weight of the supporting device is reduced; 2. the quality of the spring is improved to extend life and stability.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a low-clearance elastic supporting device for a contact net, and the invention aims to solve the technical problems that: how to improve the elasticity homogeneity of contact net and guarantee life.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides a low headroom elastic support device for contact net, is including the insulating rod and the cantilever that connect gradually, be equipped with the location fastener on the cantilever, the end connection that the cantilever was kept away from to the insulating rod has the saddle to adjust the seat, its characterized in that still includes the installation base, the commentaries on classics round pin that the level set up has on the installation base, and the peripheral cover that should change the round pin is equipped with can be relative change round pin pivoted clamp, be equipped with between commentaries on classics round pin and the clamp and radially carry out elastic support's elastic component to the clamp, one side of clamp outer peripheral face with the saddle is adjusted the seat and is linked to each other, the elastic support has set firmly on the installation base, the lower extreme of elastic support with the opposite side of clamp links firmly or spacing top is.

The positioning wire clamp arranged on the cantilever can clamp the contact net to enable the position of the contact net to be stable, the cantilever is used for prolonging the supporting position to guarantee the normal working distance of the contact net, the insulating rod is connected with the cantilever to guarantee the insulating effect, the saddle-shaped adjusting seat connected with the end of the insulating rod can be matched with the arc surface to adjust the angle orientation of the insulator, and the flexible adjustment of the position in the installation process is facilitated. The installation base is arranged, the horizontally arranged rotating pin is arranged on the installation base, the elastic element is sleeved on the periphery of the rotating pin and is an elastic material piece and can generate deformation along the radial direction, the hoop is sleeved on the outer peripheral surface of the elastic element and is connected with the saddle-shaped adjusting seat, the other side of the hoop is connected with the lower end of an elastic support on the installation base or is in limit abutting contact with the lower end of the elastic support, so that the whole cantilever and the insulating rod can drive the hoop to swing downwards around the rotating pin under the action of gravity in the installation state, the hoop downwards presses the elastic element to deform and is supported by the rotating pin, meanwhile, the other side of the hoop upwards presses the elastic support to deform, when the elasticity of the elastic support is balanced with the elasticity of the elastic element and the integral gravity, a temporary stable state can be achieved, and when a pantograph rapidly passes through the positioning wire clamp, the balanced state of the cantilever, simulating an elastic effect in an elastic deformation range of the elastic support and the elastic element; the elastic support and the elastic element are matched with each other, so that an actual swing center when the cantilever and the insulating rod drive the clamp to swing can be transferred between the elastic support and the elastic element in a self-adaptive manner, the swing radius is indirectly increased, the swing angle is reduced, the elastic support and the elastic element can release deformation in a self-adaptive manner according to the actual swing condition, a higher simulation effect is realized through deformation release and the change of the swing radius, and the elastic uniformity of the contact network is further improved; in addition, the deformation of the elastic support and the elastic element which need to be released is in a smaller range under the condition that the positioning wire clamp is lifted to the same height, so that the contact net positioned at the positioning wire clamp can be further ensured to have good elasticity in a larger range, the structure is more compact, the probability of deformation fatigue of the elastic support and the elastic element can be effectively reduced, and the whole service life of the part is prolonged.

In foretell low headroom resilient supporting device for contact net, elastic support includes vertical damping rod and court the damping that the clamp extends links the board, damping rod and damping link the board and are connected, this damping link the board with the opposite side of clamp links firmly. Including vertical damping rod and the damping that extends the setting towards the clamp through setting up elastic support and link the board, and make both link to each other, and the damping links firmly with the clamp mutually, the conduction direction that can better standard load pass through the damping link the board like this, guarantee to undertake the load that the damping rod of deformation received and be the base plate along vertical conduction, it is more stable to avoid the unbalance loading to make the damping rod warp, the damping links the board and links to each other damping rod and clamp simultaneously and has also restricted the swing range of cantilever and insulating rod, the too big influence of cantilever amplitude of oscillation is to the clamping stability of contact net when avoiding the pantograph to pass through.

In foretell low headroom resilient supporting device for contact net, the opposite side of clamp has the arc board that extends along circumference, have a plurality of mounting holes of arranging along circumference interval on the arc board, the connecting piece runs through the mounting hole with this arc board with the damping links the board and links firmly. The arc plate is arranged on the other side of the clamp, the installation holes are arranged on the arc plate at intervals, so that the clamp can be adjusted in installation angle to adapt to various low clearance environments, then the damping connecting plate is adjusted to be in a horizontal state, and then the damping connecting plate is connected with the installation holes corresponding to the level through the connecting piece, so that the stress requirement of the damping rod can be guaranteed, and the stability and the applicability of a product are further improved.

In foretell low headroom resilient supporting device for contact net, run through on the damping lever and be provided with the elasticity cylindric lock, the elasticity cylindric lock is located directly over the damping even board. Through running through the setting on the damping rod and being located the damping and link the elasticity cylindric lock directly over the board, the damping links the top of board and can lean on with elasticity cylindric lock mutually when the damping rod receives the load to warp greatly like this, and the damping rod portion under the elasticity cylindric lock will not warp again under the condition of continuing the action like this, and the load can be through elasticity cylindric lock with load transmission to the first half of damping rod, avoids the deformation of damping rod to concentrate on the lower extreme, guarantees that whole deformation is even.

In foretell low headroom resilient supporting device for contact net, the insulating rod with the cantilever is articulated mutually, the tip of cantilever has a plurality of pinhole one of arranging along the circumference interval of swing axial lead, and the tip of insulating rod has pinhole two, works as when the cantilever rotates a plurality of pinhole one can in proper order with pinhole two is just right, pinhole one and two interpolation of pinhole are equipped with the locating pin. Through setting up the insulating rod and being articulated mutually with the cantilever, be convenient for adjust the cantilever to the horizontality under the different extension installation angle of insulating rod like this, and the tip of cantilever sets up a plurality of pinhole one and passes through the locating pin cooperation with pinhole two on the insulating rod, can effectively lock after angle regulation like this, guarantees to support stably.

In the above-mentioned low headroom elastic supporting device for the overhead line system, the positioning clamp is slidably connected with the cantilever along the extending direction of the cantilever, and the positioning clamp can be locked with the cantilever. Through setting up location fastener and cantilever sliding connection, can improve the installation degree of freedom according to the actual position adjustment location fastener of contact net like this, set up the location fastener and can lock with the cantilever, can not the drunkenness at will after guaranteeing the location fastener centre gripping contact net like this.

In the above-mentioned low headroom resilient supporting device for contact net, the outer pot head of cantilever is equipped with the pipe cap. The cantilever is mostly hollow tubular product manufacturing, is convenient for practice thrift cost reduction load, sets up the pipe cap through the outer end at the cantilever, and the pipe cap can seal the tubular product tip, avoids the invasion of dirt rainwater and accelerates the corrosion.

In the above-mentioned low headroom resilient supporting device for overhead line system, the damping is even the board and is included two parallel arrangement's splint, the damping pole is connected in two between the splint. The damping connecting plate comprises two parallel clamping plates for clamping and connecting the damping rod, so that the stress points of the damping rod and the damping connecting plate are basically in the same vertical plane, the unbalance loading influence is reduced, and the structure movement is more stable.

In foretell low headroom resilient supporting device for contact net, two the one end of splint pass through the bolt with the arc board links firmly, and the other end of two splint passes through bolt interconnect, and the peripheral cover of bolt is equipped with the spring part, the both ends of spring part lean on with the end cap of splint and bolt respectively and lean on. The other ends of the two clamping plates are connected with each other through the bolts of the spring part which are sleeved on the periphery, so that the spring part always pre-tensions the two clamping plates to be close to each other, and the connection stability of the clamping plates and the damping connecting plate is improved.

In the above-mentioned low headroom elastic support device for overhead contact system, elastic element is the neoprene piece, the damping rod is the nylon spare. The elastic element is a chloroprene rubber part, and the chloroprene rubber part has good elasticity, impact resistance and medium resistance; the damping rod is arranged to be a nylon piece, the nylon piece is high in mechanical strength and good in toughness, and high tensile strength and compressive strength are achieved, so that the service life is guaranteed.

Compared with the prior art, the invention has the following advantages:

this a low headroom elastic support device for contact net mutually supports through setting up elastic support and elastic element and makes cantilever and insulating bar drive the actual swing center when clamp swings and can the self-adaptation shift between elastic support and elastic element, has increased swing radius and has reduced the swing angle indirectly like this, and elastic support and elastic element can be according to the swing condition self-adaptation release deflection of reality, realize higher simulation effect through deflection release and swing radius's change.

Drawings

Fig. 1 is a schematic structural layout of the low clearance elastic supporting device for the overhead line system.

Fig. 2 is a partial structure schematic diagram of the low clearance elastic supporting device for the overhead line system.

Fig. 3 is a schematic structural diagram of a cantilever in the low headroom elastic supporting device for the overhead line system.

In the figure, 1, an insulating rod; 11. a pin hole II;

2. a cantilever; 21. a first pin hole; 22. a pipe cap;

3. positioning a wire clamp; 4. a saddle-shaped adjusting seat;

5. installing a base; 51. rotating the pin;

6. an elastic element;

7. clamping a hoop; 71. an arc plate; 711. mounting holes;

8. an elastic support; 81. a damping lever; 82. a damping connecting plate; 821. a splint; 83. an elastic cylindrical pin; 84. a bolt; 85. a spring member;

9. and a positioning pin.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 and fig. 2, this a low headroom elastic supporting device for contact net is including insulating rod 1 and the cantilever 2 that connects gradually, be equipped with the location fastener 3 on the cantilever 2, the end connection that cantilever 2 was kept away from to insulating rod 1 has saddle to adjust seat 4, strutting arrangement is still including installation base 5, the bottom of installation base 5 has the commentaries on classics round pin 51 that the level set up, the peripheral cover of commentaries on classics round pin 51 is equipped with elastic element 6, elastic element 6's outer peripheral face cover is equipped with can changeing round pin 51 pivoted clamp 7 relatively, clamp 7 can be around changeing round pin 51 swing, one side of clamp 7 outer peripheral face links to each other with saddle and adjusts seat 4, install and set firmly elastic support 8 on the base 5, the lower extreme of elastic support 8 links firmly with the. The locating wire clamp 3 that sets up on cantilever 2 can carry out the centre gripping to the contact net and make its stable in position, and cantilever 2 is used for the extension to support the normal operating distance of position assurance contact net, and insulating stick 1 links to each other and guarantees insulating effect with cantilever 2, and the angle orientation that insulator can be adjusted through the cambered surface cooperation to the saddle regulation seat 4 of 1 end connection of insulating stick, is convenient for realize the nimble regulation of position in the installation. By arranging the installation base 5 and arranging the horizontally arranged rotating pin 51 on the installation base 5, the elastic element 6 is sleeved on the periphery of the rotating pin 51, the elastic element 6 is an elastic material and can generate deformation along the radial direction, the hoop 7 is sleeved on the outer peripheral surface of the elastic element 6 and is connected with the saddle-shaped adjusting seat 4, the other side of the hoop 7 is connected with or abutted against the lower end of the elastic support 8 on the installation base 5 in a limiting way, so that the whole cantilever 2 and the insulating rod 1 under the action of gravity in the installation state can drive the hoop 7 to swing downwards around the rotating pin 51, the hoop 7 downwards presses the elastic element 6 to deform and is supported by the rotating pin 51, meanwhile, the other side of the hoop 7 upwards presses the elastic support 8 to deform, a temporary stable state can be achieved after the elastic force of the elastic support 8 and the elastic element 6 are balanced with the integral gravity, and when a pantograph passes through the positioning wire clamp 3 quickly, the cantilever 2 can be broken by a small, The balance state of the insulating rod 1 and the hoop 7 simulates the elastic effect in the elastic deformation range of the elastic bracket 8 and the elastic element 6; the elastic support 8 and the elastic element 6 are matched with each other, so that the actual swing center when the cantilever 2 and the insulating rod 1 drive the clamp 7 to swing can be transferred between the elastic support 8 and the elastic element 6 in a self-adaptive manner, the swing radius is indirectly increased, the swing angle is reduced, the elastic support 8 and the elastic element 6 can release deformation in a self-adaptive manner according to the actual swing condition, a higher simulation effect is realized through deformation release and the change of the swing radius, and the elastic uniformity of the contact network is further improved; in addition, the deformation of the elastic support 8 and the elastic element 6 which need to be released is in a smaller range under the condition that the positioning wire clamp 3 is lifted to the same height, so that the contact net positioned at the positioning wire clamp 3 can have good elasticity in a larger range, the structure is more compact, the probability of deformation fatigue of the elastic support 8 and the elastic element 6 can be effectively reduced, and the overall service life of the part is prolonged. Further, the elastic support 8 comprises a vertical damping rod 81 and a damping connecting plate 82 extending towards the clamp 7 along the horizontal direction, the damping rod 81 is connected with the damping connecting plate 82, and the damping connecting plate 82 is fixedly connected with the other side of the clamp 7. The other side of the hoop 7 is provided with an arc plate 71 extending along the circumferential direction, the arc plate 71 is provided with four mounting holes 711 arranged at intervals along the circumferential direction, and a connecting piece penetrates through the mounting holes 711 to fixedly connect the arc plate 71 and the damping connecting plate 82. The damping rod 81 is provided with an elastic cylindrical pin 83 in a penetrating manner, and the elastic cylindrical pin 83 is positioned right above the damping connecting plate 82. The damping link 82 preferably includes two parallel clamping plates 821, and the damping rod 81 is connected between the two clamping plates 821. One end of each of the two clamping plates 821 is fixedly connected with the arc plate 71 through a bolt 84, the other end of each of the two clamping plates 821 is connected with each other through a bolt 84, a spring element 85 is sleeved on the periphery of each bolt 84, and two ends of each spring element 85 are respectively abutted to end caps of the clamping plates 821 and the bolts 84. The elastic element 6 is a neoprene piece and the damping rod 81 is a nylon piece.

As shown in fig. 1 and 3, the insulating rod 1 is hinged to the cantilever 2, the end of the cantilever 2 is provided with a plurality of first pin holes 21 arranged at intervals along the circumferential direction of the swing axis of the cantilever 2, the end of the insulating rod 1 is provided with a second pin hole 11, the plurality of first pin holes 21 can be sequentially opposite to the second pin holes 11 when the cantilever 2 rotates, and the first pin holes 21 and the second pin holes 11 are internally provided with positioning pins 9. Further, the locating wire clamp 3 is connected with the cantilever 2 in a sliding mode along the extending direction of the cantilever 2, the locating wire clamp 3 is arranged on the outer peripheral face of the cantilever 2 through a U-shaped screw rod sleeve, nuts are arranged at two ends of the U-shaped screw rod respectively, after the locating wire clamp 3 is adjusted to a proper position along the cantilever 2, the nuts are screwed, the whole locating wire clamp 3 and the cantilever 2 can be tightly held to achieve a locking effect, and a pipe cap 22 is sleeved on the outer end of the cantilever 2.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The utility model provides a low headroom elastic support device for contact net, is including insulating rod (1) and cantilever (2) that connect gradually, be equipped with location fastener (3) on cantilever (2), the end connection who keeps away from cantilever (2) in insulating rod (1) has saddle regulation seat (4), its characterized in that, still including installation base (5), the commentaries on classics round pin (51) that the level that has set up on installation base (5), the peripheral cover of this commentaries on classics round pin (51) is equipped with can be relative commentaries on classics round pin (51) pivoted clamp (7), be equipped with between commentaries on classics round pin (51) and clamp (7) and can radially carry out elastic support's elastic component (6) to clamp (7), one side of clamp (7) outer peripheral face with saddle regulation seat (4) link to each other, set firmly elastic support (8) on installation base (5), the lower extreme of elastic support (8) with the opposite side or spacing top that link firmly lean on with to clamp (7) shape with clamp (7) are by in Becomes an elastic support.

2. Low headroom resilient support device for overhead lines as claimed in claim 1, characterized in that the resilient support (8) comprises a vertical damping bar (81) and a damping link plate (82) extending towards the yoke (7), the damping bar (81) and the damping link plate (82) being connected, the damping link plate (82) being secured to the other side of the yoke (7).

3. The low clearance elastic support device for the overhead line system of claim 2, wherein the other side of the clamp (7) is provided with an arc plate (71) extending along the circumferential direction, the arc plate (71) is provided with a plurality of mounting holes (711) arranged at intervals along the circumferential direction, and a connecting member penetrates through the mounting holes (711) to fixedly connect the arc plate (71) and the damping connecting plate (82).

4. The low clearance elastic support device for overhead lines of claim 3, wherein the damping rod (81) is provided with an elastic cylindrical pin (83) in a penetrating manner, and the elastic cylindrical pin (83) is positioned right above the damping connecting plate (82).

5. The low headroom elastic support device for the overhead line system of claim 1, 2, 3 or 4 is characterized in that the insulating rod (1) is hinged with the cantilever (2), the end of the cantilever (2) is provided with a plurality of pin holes I (21) which are arranged at intervals around the swinging axis of the cantilever (2), the end of the insulating rod (1) is provided with a pin hole II (11), a plurality of pin holes I (21) can be sequentially opposite to the pin hole II (11) when the cantilever (2) rotates, and positioning pins (9) are inserted into the pin holes I (21) and the pin hole II (11).

6. Low clearance resilient support means for overhead lines as claimed in claim 5, wherein the positioning clip (3) is slidably connected to the cantilever (2) along the extension direction of the cantilever (2), and the positioning clip (3) can be locked to the cantilever (2).

7. Low headroom resilient support device for overhead lines as claimed in claim 5, characterized in that the outer end of the cantilever (2) is sleeved with a cap (22).

8. The low headroom resilient support device for the overhead line system of claim 3 or 4, wherein the damping link plate (82) comprises two parallel-arranged clamp plates (821), and the damping rod (81) is connected between the two clamp plates (821).

9. The low clearance elastic support device for the overhead line system of claim 8, wherein one end of each of the two clamping plates (821) is fixedly connected with the arc plate (71) through a bolt (84), the other end of each of the two clamping plates (821) is connected with each other through the bolt (84), a spring member (85) is sleeved on the periphery of the bolt (84), and two ends of the spring member (85) are respectively abutted against the end caps of the clamping plates (821) and the bolts (84).

10. Low headroom elastic support device for overhead line systems according to claim 2 or 3 or 4, characterized in that the elastic element (6) is neoprene and the damping bar (81) is nylon with elasticity.