阅读说明：本技术 一种适用于“t”型刚性接触网的除冰弓头 (Deicing bow suitable for T-shaped rigid contact net ) 是由 肖嵩 赖新安 孟举 叶智宗 童梦园 李玉航 魏文赋 吴广宁 于 2019-10-30 设计创作，主要内容包括：一种适用于“T”型刚性接触受网除冰弓头,特征,该除冰弓头结构为；托板顶面设置有三块除冰金属刷,托板前、后固定有除冰刀,托板上铰接有一对以上滚筒,托板底面固定有两排,每排三个托板支架,每个支架下部活动插入弓头底座上的槽口中,并经支架上的孔活动套装在螺钉上,该螺钉旋接在托板支架上,每个支架两侧与弓头底座之间分别固定有一个弹簧。本发明能有效铲除接触网覆冰,具有受流稳定的优点。(A deicing bow suitable for a T-shaped rigid contact net is characterized in that the deicing bow has the structure as follows; the top surface of the supporting plate is provided with three deicing metal brushes, deicing cutters are fixed in front of and behind the supporting plate, more than one pair of rollers are hinged on the supporting plate, two rows of three supporting plate supports are fixed on the bottom surface of the supporting plate, the lower part of each supporting plate is movably inserted into a notch on the bow head base and movably sleeved on a screw through a hole on the supporting plate, the screw is screwed on the supporting plate supports, and a spring is respectively fixed between the two sides of each supporting plate and the bow head base. The ice-coating scraper can effectively remove ice-coating on the contact net and has the advantage of stable current collection.)

1. The utility model provides a deicing bow suitable for "T" type rigidity contact net, the characteristic, deicing bow structure is: three deicing metal brushes (2) are fixed on the top surface convex part of a rectangular supporting plate (1) at equal intervals, deicing knives (9) with symmetrical shapes are fixed at the front and rear wide edge positions of the supporting plate (1) respectively, the deicing knives (9) are jointed by a horizontal plane and an arc-shaped plane to form a cutting edge, the horizontal plane of the deicing knives is coplanar with the top surface of the supporting plate (1), more than one pair of guide rollers (4) are vertically arranged on the two sides of the deicing metal brushes (2) on the supporting plate (1), the arrangement mode is that a square insulating block (5) fixedly connected with the lower part of a roller main shaft (3) is placed in a square hole on the supporting plate (1), the front part of an insulating fastening screw (14) is provided with a thread, and the middle rear part is a smooth rod; after a fastening screw (14) is inserted into a hole on the long side surface of the supporting plate and penetrates through a hole on the insulating block (5), the front part of the fastening screw (14) is screwed on a screw hole of the supporting plate, a compression spring (19) sleeved on the fastening screw (14) is pressed between the head part of the fastening screw (14) and the insulating block (5), meanwhile, the insulating block (5) is movably sleeved on a smooth rod part of the fastening screw (14) through the hole on the insulating block, a bow head base (13) used for being installed and fixed on an auxiliary bow supporting arm is in an H shape, two rows of three supporting plate supports (16) are respectively fixed on two sides of the bottom surface of the supporting plate (1) along the long side direction, the lower part of each supporting plate support (16) is hinged on the bow head base (13) in a mode that the lower part of each supporting plate support (16) is movably inserted into a notch on the bow head base (13), and the screw (15) extends into the notch of the bow head base and movably penetrates through the hole on the supporting plate and, the left side and the right side of the supporting plate bracket (16) are respectively provided with an elastic stabilizing device: a rod piece is fixed between a pair of ear plates in the middle of the supporting plate bracket (16), another rod piece is fixed between another pair of ear plates on the bow head base (13), and the spring is fixed between the two rod pieces.

2. Deicing bow according to claim 1, characterized in that said deicing metal brushes (2) are 3 square deicing metal brushes; an ice guide hole (7) is formed in the position between two adjacent deicing metal brushes (2) on the supporting plate (1); the bow head base (13) is correspondingly provided with an ice guide plate (12) at a position right below the ice guide hole (7), and the ice guide plate (12) is obliquely fixed on the bow head base.

3. Deicing bow according to claim 1, characterized in that the guide rollers (4) are mounted on the roller spindle (3) via two bearings, and the top of the roller spindle (3) has an annular flange (6) serving as a stop, and a stop ring (17) is fitted on the roller spindle (3) below the guide rollers.

4. Deicing bow according to claim 1, characterized in that the top face of the horizontal section of the busbar (26) is an outwardly convex arc-shaped face.

5. Deicing bow according to claim 1, characterized in that the two deicing knives (9) are connected to the carrier via three cylinders each.

Technical Field

The invention relates to the technical field of rail transit, in particular to a deicing device of a T-shaped rigid contact net suitable for alpine regions and tunnels.

Background

The contact network is a special power supply line which is unique to the electrified railway and is erected along a track to provide electric energy for an electric train, and as an outdoor power transmission system, the contact network is subjected to the influence of all natural conditions, and is subjected to the tests of wind blowing, sunshine, rain, ice coating and the like, and the tests of impact of a pantograph on the contact network and vibration and fatigue caused by the impact.

Overhead contact net divide into rigid contact net and flexible contact net two types, and rigid contact net has certain advantage for flexible contact net, has to occupy for a short time, need not set up lower anchor device, has advantages such as spare part is few, safe and reliable. The railway is built in the mountain areas with high cold and high altitude, a plurality of long tunnels need to be built under the limitation of special terrain environment, the tunnel adopting the rigid contact net can save space, the hole diameter is smaller, and the cost of digging and chiseling the tunnel can be greatly saved.

Most of the existing rigid contact networks adopt I-shaped busbars to clamp contact lines, the humidity in a tunnel is high, water seepage occurs occasionally, the seepage water is easy to accumulate at the tops of the busbars, and the structure enables the seepage water to flow to the wire clamps at two sides and the bottom; if the tunnel is in a low-temperature environment for a long time, the whole bus bar and the contact line are wrapped by seepage water and icing, current collection of the pantograph is seriously influenced, and the ice coating is thick and is difficult to remove.

At present, the deicing of a contact net can be divided into several modes such as artificial deicing, heavy-current thermal deicing, natural passive anti-icing and the like, but the efficiencies of the deicing measures are extremely low; on a line with the French running speed less than 200km/h, a deicing device similar to a pantograph is installed at the front end of the pantograph, but the existing deicing device has some problems: (1) the ice coating condition of the rigid contact net is more serious, and a thicker ice layer is difficult to remove, so that the ice removal is not thorough and the current is influenced. (2) In the process of high-speed running of a train, rigid impact between the deicing device and ice coating easily damages a rigid contact net, and meanwhile, the deicing device is seriously deformed and even separated from an ice layer, so that the deicing effect cannot be achieved. (3) The existing deicing device is mainly applied to a flexible contact network, the deicing device is easily abraded too fast when the deicing device is used for a rigid contact network, and a large amount of labor cost is consumed for regularly replacing the deicing device with almost-worn abrasion. (4) Violent shaking in the deicing process easily reduces the deicing effect by half, and a fixing and guiding device is lacked.

Therefore, based on the background that some lines are in high and cold areas and pass through a tunnel, a novel rigid contact net and a deicing device matched with the rigid contact net need to be designed to solve the problems that the rigid contact net is easy to cover ice and has no effective deicing measures and the like in the prior art.

Disclosure of Invention

The invention aims to provide a deicing bow which is in flexible contact with a T-shaped bus bar of a rigid contact net in the longitudinal direction and the transverse direction, has high mechanical deicing efficiency and is suitable for the T-shaped rigid contact net.

The purpose of the invention is realized as follows: a deicing bow suitable for a T-shaped rigid contact network, which consists of a plurality of suspension mechanisms, a bus bar and contact wires, wherein the cross section of the bus bar is in a T shape consisting of a horizontal section and a vertical section, a pair of chucks are formed by a section at the lower part of the vertical section, and the contact wires are clamped on the chucks of the bus bar through a fastening bolt, a fastening nut and a clamp; the suspension mechanism is as follows: t-shaped bolts are respectively fixed at two ends of the channel steel, the tops of the two T-shaped bolts are used for being fixed on the inner wall of the tunnel, the insulator is fixed on the bottom surface of the channel steel, the busbar wire clamp is fixed at the bottom of the insulator through the bolts, and two ends of the horizontal section of the busbar are respectively clamped and fixed on the busbar wire clamp through fastening bolts;

the deicing bow head structure used for being arranged on the auxiliary bow bracket arm is as follows: three deicing metal brushes are fixed on the convex parts of the top surface of the rectangular supporting plate at equal intervals, deicing knives with symmetrical shapes are respectively fixed at the positions of the front and rear wide edges of the supporting plate, each deicing knife is formed by connecting a horizontal plane and an arc-shaped plane to form a cutting edge, the horizontal plane of each deicing knife is coplanar with the top surface of the supporting plate, more than one pair of guide rollers are vertically arranged on the supporting plate at two sides of each deicing metal brush, the arrangement mode is that a square insulating block fixedly connected with the lower part of a roller main shaft is placed in a square hole on the supporting plate, the front part of an insulating fastening screw is provided with a thread, and the middle rear part; after the fastening screw is inserted into the hole on the long side of the supporting plate and passes through the hole on the insulating block, the front part of the fastening screw is screwed on the screw hole of the supporting plate, and the compression spring sleeved on the fastening screw is pressed between the head of the fastening screw and the insulating block, meanwhile, the insulation block is movably sleeved on the smooth rod part of the fastening screw through a hole on the insulation block, the shape of the bow head base fixed on the auxiliary bow bracket arm is H-shaped, two rows of three support plate supports in each row are respectively fixed on two sides of the bottom surface of the support plate along the long edge direction of the support plate, and the lower part of each support plate support is hinged on the bow head base in the following mode: the support plate support lower part inserts the notch on the bow base with moving ground in, and the screw stretches into bow base notch and connects soon behind the hole on the support plate support with moving ground in bow base side, and the support plate support left and right sides is provided with the elastic stabilization device respectively: a rod piece is fixed between a pair of ear plates at the middle part of the supporting plate bracket, another rod piece is fixed between another pair of ear plates on the bow head base, and the spring is fixed between the two rod pieces.

The deicing metal brush is a square deicing metal brush; an ice guide hole is formed in the position between two adjacent deicing metal brushes on the supporting plate; the bow head base is provided with ice guide plates at positions below the ice guide holes, and the ice guide plates are obliquely fixed on the bow head base.

The guide roller is installed on the roller main shaft through two bearings, an annular flange used for limiting is arranged at the top of the roller main shaft, and a limiting ring is sleeved and fixed below the guide roller on the roller main shaft.

The top surface of the horizontal section of the bus bar is an outer convex arc surface.

The two deicing cutters are respectively connected with the supporting plate through three cylinders.

Compared with the prior art, the invention has the beneficial effects that:

1. in the prior art, effective methods for deicing a rigid contact net are few, and a resistive wire heating deicing technology, an artificial deicing technology and the like have many problems, so that the deicing efficiency is low. The novel T-shaped busbar is adopted to clamp the contact line, and the arc-shaped anti-icing cover is arranged at the top of the busbar, so that seepage water on the tunnel wall can slide off from two sides of the surface of the anti-icing cover, accumulated water in the busbar is prevented from freezing, ice is not easily coated on two sides, and compared with the traditional busbar ice coating situation, the phenomenon that the suspension device collapses due to exceeding a bearing load can be avoided; the deicing device is designed aiming at the structure of the rigid contact net, is arranged on the auxiliary bow but does not receive current, and the deicing bow finishes deicing work before the pantograph is contacted with the rigid contact net, so that the pantograph can stably receive current, the off-line rate is obviously reduced, and the ablation of electric arcs generated by contacting ice off-line to a contact line and the pantograph is reduced.

2. The guide rollers on the two sides are attached to the two sides of the novel T-shaped bus bar, namely the deicing cutter is in flexible (elastic) contact with the T-shaped bus bar through the guide rollers in the transverse direction, so that severe shaking of the deicing device in the deicing process is obviously reduced; the bow head bottom is fixed in the layer board through installing the spring additional, makes deicing swordfish T type busbar form flexible (elasticity) contact promptly on vertical, if icing appears in busbar both sides, spring assembly can make the direction cylinder better follow busbar both sides undulant, avoids appearing hard collision with icing.

3. Three rows of parallel metal brushes are arranged on the deicing plate, and deicing knives are arranged at the front end and the rear end of the deicing plate through a connecting mechanism.

4. The supporting plate is fixed on the bow head base through the supports, and each support is provided with the spring shock absorption device with two degrees of freedom, so that the deicing brush and the deicing knife can be in better contact with ice coated on a contact wire, damage to a rigid contact net during deicing can be reduced, damage caused by hard collision of the deicing brush and the deicing knife can be avoided, and the purpose of flexible deicing is achieved.

5. The anti-icing busbar with the T-shaped section is designed, the arc-shaped anti-icing cover is arranged at the top, the width of the anti-icing cover is larger than that of a bottom wire clamp, when water seeps in a tunnel, the design is favorable for the water seeping to fall on the top of the busbar and then slide down from two sides of the surface of the anti-icing cover, and accumulated water of the busbar is prevented from being frozen; and the structure obviously reduces the water quantity flowing through the two sides of the busbar and the wire clamp at the bottom, thereby improving the condition that the rigid contact net is easy to cover ice. When the locomotive drives through the ice-covered tunnel, the deicing bow head lifted by the auxiliary bow is provided with a composite deicing structure, so that the problem of incomplete deicing can be effectively solved; the guide rollers on the two sides obviously reduce the violent shaking of the deicing device in the deicing process; the support is provided with the damping devices with two degrees of freedom, so that the deicing device can be effectively attached to an ice layer, hard collision is avoided, a rigid contact net is damaged, and the flexible deicing effect is achieved.

The deicing bow used with the novel T-shaped rigid contact net has good impact resistance, line-attached deicing performance and the like, has remarkable progress compared with the prior art, and has high use value for high-speed railway lines in alpine regions and with multiple tunnels.

Drawings

Fig. 1 is a perspective view of a deicing bow.

Fig. 2 is a side view of a deicing bow.

Fig. 3 is a perspective view of the drum with the elastic means.

Fig. 4 is a schematic view of a novel T-shaped rigid contact net.

Fig. 5 is a contact perspective view of a deicing bow and a novel T-shaped rigid contact net.

Wherein, the part names corresponding to the reference numbers are as follows:

1-pallet, 2-deicing metal brush, 3- (guide) roller spindle, 4-guide roller, 5-insulation block (with hole), 6-annular flange, 7-ice guide hole, 8-connecting mechanism (three cylinders), 9-deicing knife, 10-elastic stabilizing device, 11-screw, 12-ice guide plate, 13-bow head base, 14-fastening screw (insulation material), 15-screw (large), 16-pallet bracket, 17-spacing ring, 18-insulation pillar (smooth rod part of fastening screw 14), 19-compression spring, 20-suspension channel steel, 21-supporting insulator, 22-busbar clamp, 23-T-shaped bolt, 24-fastening screw, 25-nut, 26-busbar, 27- (busbar) fixing bolt, 28- (busbar) fixing nut, 29-contact wire.

Detailed Description

Fig. 5 is a view showing a T-shaped rigid contact current collector suitable for alpine regions and tunnels, which consists of a T-shaped rigid contact net and a deicing bow; the T-shaped rigid contact net is composed of a plurality of suspension mechanisms, a bus bar 26 and a contact wire 29, wherein the cross section of the bus bar 26 is in a T shape composed of a horizontal section and a vertical section, a pair of chucks are formed by a section at the lower part of the vertical section, and the contact wire 29 is clamped on the chucks of the bus bar 26 through a fastening bolt 27 and a fastening nut 28; the suspension mechanism is as follows: t-shaped bolts 23 are respectively fixed at two ends of the channel steel 20, tops of the two T-shaped bolts 23 are used for being fixed on the inner wall of the tunnel, the insulator 21 is fixed on the bottom surface of the channel steel 20, the busbar wire clamp 22 is fixed at the bottom of the insulator 21 through bolts, and two ends of a horizontal section of the busbar 26 are respectively clamped and fixed on the busbar wire clamp 20 through fastening bolts 24;

deicing bow head structure does: three deicing metal brushes 2 are fixed on the convex part of the top surface of a rectangular supporting plate 1 at equal intervals, deicing knives 9 with symmetrical shapes are respectively fixed at the positions of the front and rear wide edges of the supporting plate 1, each deicing knife 9 is formed by connecting a horizontal plane and an arc-shaped surface, the horizontal plane of each deicing knife is coplanar with the top surface of the supporting plate 1, more than one pair of guide rollers 4 are vertically arranged on the supporting plate 1 at two sides of each deicing metal brush 2, the arrangement mode is that a square insulating block 5 fixedly connected with the lower part of a roller spindle 3 is placed in a square hole on the supporting plate 1, the front part of an insulating fastening screw 14 is provided with threads, and the middle rear part is a smooth rod part; after the fastening screw 14 is inserted into the opening on the long side surface of the supporting plate and passes through the hole on the insulating block 5, the front part of the fastening screw 14 is screwed on the screw hole of the supporting plate, and the compression spring 19 fitted around the fastening screw 14 is pressed between the head of the fastening screw 14 and the insulating block 5, meanwhile, the insulation block 5 is movably sleeved on the smooth rod part of the fastening screw 14 through a hole on the insulation block, the shape of the bow base 13 fixed on the auxiliary bow bracket arm is H-shaped, two rows of three bracket supports 16 are respectively fixed on two sides of the bottom surface of the bracket 1 along the long edge direction, and the lower part of each bracket support 16 is hinged on the bow base 13 in the following way: the lower part of the supporting plate support 16 is movably inserted into a notch on the bow base 13, the screw 15 extends into the notch of the bow base and movably penetrates through a hole on the supporting plate support to be screwed on the side surface of the bow base, and the left side and the right side of the supporting plate support 16 are respectively provided with an elastic stabilizing device: a rod is fixed between a pair of ear plates in the middle of the supporting plate bracket 16, another rod is fixed between another pair of ear plates on the bow head base 13, and a spring is fixed between the two rods. The busbar clamp is fixed at the bottom of the insulator (see fig. 5) through four bolts, the cross section of the busbar is formed by connecting a left-right horizontal segment, a vertical upward segment, a left-right horizontal segment, a vertical downward segment and a right-left horizontal segment end to end, and the supporting plate bracket is in a square column shape.

The deicing metal brushes 2 are 3 square deicing metal brushes; an ice guide hole 7 is formed in the position between two adjacent deicing metal brushes 2 on the supporting plate 1; the bow head base 13 is correspondingly provided with an ice guide plate 12 at a position right below the ice guide hole 7, and the ice guide plate 12 is obliquely fixed on the bow head base.

The guide roller 4 is arranged on the roller main shaft 3 through two bearings, the top of the roller main shaft 3 is provided with an annular flange 6 used for limiting, and a limiting ring 17 is sleeved and fixed below the guide roller on the roller main shaft 3.

The top surface of the horizontal section of the bus bar 26 is an outer convex arc surface.

The two de-icing blades 9 are connected with the supporting plate through three cylinders respectively so as to discharge ice chips from the gaps between the adjacent cylinders.

This novel deicing bow suitable for "T" type rigidity contact net, fixed mounting is in vice bow trailing arm upper end, and vice bow bottom is equipped with the insulator and keeps apart the power, and vice bow rises when the locomotive is about to go to the tunnel, and before pantograph and contact net contact, deicing work is accomplished to the deicing bow. The novel deicing device comprises a novel T-shaped bus bar 26, a contact suspension device, a deicing metal brush 2, a supporting plate 1 for fixing the deicing metal brush, deicing knives 9, guide rollers 4, fastening screws 14, a supporting plate support 16, an elastic stabilizing device 10, screws 11 and bow bases 13, wherein the deicing knives are fixed at the front end and the rear end of the supporting plate through a connecting mechanism 8, the two sides of the guide rollers are symmetrically distributed, the elastic stabilizing device 10 is used for fixing the rollers, the supporting plate support 16 is used for fixing the supporting plate support, and the bow bases 13 are connected with.

The working mode of the invention is as follows: the traditional I-shaped busbar is changed into an anti-icing rigid contact net structure with a T-shaped section, and the arc-shaped anti-icing cover is arranged at the top, so that the leaked water on the tunnel wall can slide off from the two sides of the surface of the anti-icing cover after falling on the top of the busbar, and the accumulated water of the busbar is prevented from being frozen. The new-type "T" bus bar 26 is fixed to the support insulator 21 by the bus bar clip 22 and fixed to the tunnel wall by the suspension channel 20 by clamping the contact wire 29 with force by the bus bar fixing bolts 27 and 28.

When the locomotive passes through the ice-coated busbar, the deicing blades 9 connected to the front end and the rear end of the supporting plate 1 through the connecting mechanism 8 carry out deicing operation to remove the ice blocks covered on the contact line 29; the supporting plate 1 is provided with 3 ice removing metal brushes 2 for removing residual crushed ice on the contact line 29, and ice guiding holes 7 are arranged among the ice removing brushes for removing the scraped ice and avoiding the accumulation of ice and snow to aggravate the bearing of the auxiliary bow.

The guide rollers 4 on two sides of the supporting plate 1 are limited by a roller main shaft 3 with one end provided with an annular flange 6, and the other end is limited by a limiting ring 17 fixed on the roller main shaft 3; the other end of the roller main shaft 3 is provided with a perforated insulating block 5, the perforated insulating block 5 is fixed on the supporting plate 1, wherein the insulating block 5 is movably sleeved on an insulating support column 18 through an opening of the insulating block 5, and a compression spring 19 is arranged above the insulating block 5 (the guide roller can move along the axial direction of the insulating support column 18 so as to enable the guide roller to be in elastic contact with the busbar). When the deicing bow passes through a rigid contact net in the tunnel, the guide rollers 4 on two sides can be used for clamping the novel T-shaped busbar 26 to play a role in fixing and guiding, and severe shaking caused when the deicing bow removes thick ice is avoided; when the roller and the two sides of the busbar are in rolling friction contact with part of ice coating, the spring stabilizing device at the bottom can be stretched and contracted through the spring of the spring stabilizing device to avoid hard spots, avoid collision between the guide roller and the busbar and ensure smooth contact between the guide roller and the two sides of the busbar.

The supporting plate 1 is connected with a supporting plate bracket 16, the supporting plate bracket 16 is made of insulating materials, 6 supporting plates are symmetrically distributed, and the purpose is to fix the position of the supporting plate 1 and realize electrical insulation, grooves are symmetrically arranged at the left side and the right side of the bow head base 13, the position of the supporting plate bracket 16 is fixed by a screw (large) 15, a plurality of allowances are left in the grooves, elastic stabilizing devices 10 are symmetrically arranged at the left side and the right side of the supporting plate bracket 16, and the supporting plate bracket 16 and the bow head base 13 are connected by screws 11; in order to prevent the falling ice scraped by the deicing brush and the deicing knife 9 from accumulating on the bow base 13 and aggravate the bearing of the auxiliary bow in the deicing process, the bow base 13 is arranged into an H shape and is provided with an inclined ice guide plate 12 to guide the falling ice to slide to the front side and the rear side of the deicing bow. When the locomotive is at the in-process of high-speed motion, the condition that deicing bow and contact wire 29 produce the off-line takes place occasionally, can influence the deicing effect of deicing bow, and then influence the current collection of pantograph, elasticity stabilising arrangement 10 (spring spiral) can make the ability that has the resilience after layer board 1 swings through the flexible of self, can guarantee that the deicing brush hugs closely contact wire 29 all the time, can reduce the hard collision between deicing bow and the rigid contact net simultaneously, reach the effect of flexible deicing.