CN213199524U - Open-type contact rail protection casing - Google Patents

Abstract

An open-type contact rail protective cover is composed of a plurality of protective cover components, each protective cover component comprises a cover body component and a base, each cover body component comprises a cover body and a support, each cover body comprises a vertical side plate, and a cover top cover is arranged at the upper end of each cover body in an extending mode; the brackets are arranged on the inner side of the cover body at intervals along the longitudinal axis of the cover body and are fixedly connected with the cover body, and the lower ends of the brackets are provided with pin shaft holes; the base is provided with a base plate, a connecting structure is arranged on the base plate, a support connecting part is arranged on the base plate, a base pin hole matched with the pin hole on the support is arranged on the base plate, the base pin hole is a vertical long hole, and the support and the base are hinged through a pin shaft arranged in the pin hole and the base pin hole in a penetrating mode; the protective cover assemblies are arranged longitudinally, and the cover bodies are longitudinally connected end to end along a section of the contact rail to form the contact rail protective cover arranged along the line of the contact rail. The protective cover can be conveniently lifted to inspect, maintain and repair the contact rail, is convenient to use, safe and reliable, is convenient to install and repair, and is suitable for urban subway and light rail traffic.

Description

Open-type contact rail protection casing

Technical Field

The utility model belongs to the technical field of supply rail power supply system, concretely relates to open-type contact rail safety cover is awarded with contact rail power supply system to power supply rail protection architecture of subway and city light rail system, the applicable city subway and light rail traffic.

Background

In urban underground railway engineering, a contact rail, also called a power supply rail, for transmitting power to a locomotive is arranged on one side of an electric locomotive running track. Contact rails are devices that transmit electrical energy to electric traction vehicles in subway and urban rail transit systems. The contact rail operating condition is electrified, and in order to prevent that the orbital staff of entering from electrocuteeing, contact rail spare part receives service environment's such as sunlight irradiation ageing and dust pollution, need set up the protection casing that plays insulation protection on the contact rail. The running electric locomotive is powered on through the collector shoe in contact with the contact rail, and if the collector shoe cannot be in normal contact with the contact rail, the train is powered off. The continuous power supply capability of the contact rail as a non-backup power supply device for supplying electric power to the electric vehicle and the high reliability thereof are the greatest system safety.

The contact rail system mainly comprises a steel-aluminum composite rail, an expansion joint, an end elbow and other related components and an insulating support device, and provides electric energy for an electric locomotive group. The transmission of electric power is realized by the contact between the collector shoe of the electric locomotive and the contact rail. The collector shoe and the contact rail on the electric locomotive can continuously receive power only by keeping certain power receiving contact pressure during high-speed running of the electric locomotive, the contact rail can generate wavy stress deformation under the impact of the collector shoe of the electric locomotive on the contact rail, the contact rail and the collector shoe work in electrified friction and vibration environments, a power supply system of the contact rail, parts and components of the electric locomotive are connected and loosened and subjected to power corrosion, and the safety of the operation of rail transit can be affected if the problems cannot be found and solved in time. The original protective cover for the contact rail is characterized in that a single cover is pressed one by one like tiles on a house and is fixed on a foundation beside the contact rail in series by using a support and a bolt, the contact rail is covered along the line direction of the contact rail, various parts in the contact rail and collector shoes of an electric locomotive are all blocked by the cover, so that the observation is inconvenient, and particularly, in the parking position of the electric locomotive, the upper edge of the protective cover for the contact rail is attached to the electric locomotive, so that the observation is not good. When the protective cover is maintained and repaired, the fixing bolt of the contact rail cover needs to be detached, so that the working strength and difficulty are greatly increased, and the service life of the protective cover is influenced. These disadvantages in the maintenance work impair the reliability of the power supply system of the contact rail, which in turn affects the operational safety of rail transit.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to improve prior art's not enough, provide an open-type contact rail protection casing, convenient inspection, maintenance and maintenance contact rail power supply system, the life of extension protection casing.

The purpose of the utility model is realized like this:

an open-type contact rail protective cover is composed of a plurality of protective cover components, each protective cover component comprises a cover body component and a base,

the cover body component comprises a cover body and a bracket,

the cover body comprises a vertical side plate, and a cover top cover is transversely arranged at the upper end of the vertical side plate in an extending manner so as to at least cover the contact rail;

the bracket is arranged on the inner side of the cover body at intervals along the longitudinal axis of the cover body and is fixedly connected with the cover body, and the lower end of the bracket is provided with a pin shaft hole parallel to the longitudinal axis;

the base is provided with a base plate, a connecting structure is arranged on the base plate to be connected with a roadbed, a support connecting part is arranged on the base plate, a base pin shaft hole matched with the pin shaft hole in the support is arranged on the support connecting part, the base pin shaft hole is a vertical long hole, the support and the base are hinged and connected through a pin shaft penetrating through the pin shaft hole and the base pin shaft hole, so that the support can rotate and move up and down relative to the base, and the cover body fixed on the support can cover and expose the contact rail under the protective cover;

each protection cover subassembly is vertically arranged, the cover body is along the contact rail a section longitudinal end to end, constitutes the contact rail protection casing of arranging along the contact rail circuit.

Further, a positioning structure is arranged between the support and the base, so that the cover body assembly can be positioned relative to the base at two positions from complete covering to complete exposing of the contact rail and a set position between the two positions.

The positioning structure may be: the bracket is characterized in that a notch is formed in the upper end of the bracket connecting part on the base, and correspondingly, a positioning bayonet lock is arranged on the bracket and inserted into the notch, so that the bracket is positioned relative to the base.

Specifically, the upper end of the base is provided with at least two notches, and the notch closer to the contact rail is deeper.

Two of base upper end the degree of depth of breach groove, with the length of the vertical slot hole in the base round pin shaft hole on the base and the position of the cover body has as follows the matching relation:

two of base upper end the degree of depth of breach groove, with the length of the vertical slot hole in the base round pin shaft hole on the base and the position of the cover body has as follows the matching relation:

when the positioning bayonet lock on the bracket is positioned at the bottom of the deeper notch, the pin shaft penetrating through the pin shaft hole on the bracket is positioned at the lower end of the base pin shaft hole on the base, and at the moment, the cover body completely covers the contact rail and is in a protection state;

when the positioning bayonet lock on the bracket is positioned at the bottom of the shallow notch, the pin shaft is positioned in the middle of the base pin shaft hole, and at the moment, the cover body inclines towards the outer side of the contact rail to expose the contact rail and is in an inspection and maintenance state;

when the pin shaft is positioned at the upper end of the pin shaft hole of the base, and the positioning bayonet lock is positioned on the side surface of the base, the vertical side plate of the cover body falls on the rail foundation plane outside the contact rail, and the contact rail and the support below the contact rail are exposed and are in a maintenance state.

Preferably, the surface of the upper end face of the base, which is connected between the slots and the vertical side plate, is a cylindrical surface, and the axis of the cylindrical surface is located at the axis of the pin shaft at the upper end of the vertical long hole in the pin shaft hole of the base, so that when the positioning bayonet lock is moved out from the upper end of the slot, the pin shaft is located at the upper end of the pin shaft hole of the base, and the positioning bayonet lock moves on the cylindrical surface on the base.

Preferably, two of the brackets are connected to a section of the cover body.

The cover body and the support are fixedly connected into a whole through bolts. The bolts are respectively connected with the support on the vertical side plate of the cover body and the cover top cover.

Specifically, the cross section of the cover body is in an inverted L shape.

Specifically, the support comprises a support plate, the shape of the outer surface of the support plate is matched with the shape of the inner surface of the cover body, so that the support plate is attached to the inner side surface of the cover body, and bolt holes are formed in the support corresponding to the vertical side plate of the cover body and the cover top cover; two vertical rib plates are convexly arranged on the inner side surface of the support plate, so that the section of the support is in a Pi shape; the vertical rib plates extend downwards to form an extension section at the lower end of the support plate, and circular holes matched with the base and used for installing the bolt shafts are formed in the extension sections of the two vertical rib plates.

And the extension sections of the two vertical rib plates are also provided with bayonet lock round holes matched with the base and used for installing and positioning bayonet locks.

Specifically, the support connecting part on the base is a vertical plate arranged on the center line of symmetry of the base plate, and the two stud plates on the support are respectively arranged on two sides of the vertical plate, are hinged through a bolt shaft, and are positioned through a positioning bayonet lock and a notch.

The thickness of the support connecting part is unequal, and the thickness of a vertical area where the base pin shaft hole is located is larger than that of other areas of the support connecting part.

The edge of one side, far away from the contact rail, of the vertical plate on the base is flush with the corresponding edge of the base plate, and the connecting structure for connecting the roadbed on the base plate is a plurality of long holes parallel to the central line.

Preferably, the number of the long holes is three, the three long holes are respectively arranged on two sides and a central line of the vertical plate, and the centers of the three long holes form an isosceles triangle.

The utility model provides an open-type conductor rail protection casing can cover the conductor rail through can covering the body subassembly for base pivoted, can conveniently lift again, inspects, maintains and maintains the conductor rail for the operation of inspection maintenance and clearance conductor rail becomes very convenient, and the further location structure of this protection casing still makes its in use safe and reliable, and installation and maintenance are convenient, are applicable to city subway and light rail traffic.

The invention is further illustrated by the following figures and examples.

Drawings

Fig. 1 is a schematic structural view of the open-type contact rail protective cover provided by the present invention.

Fig. 2 is a left side view of the structure of fig. 1.

Fig. 3 and 4 are schematic perspective views of the open type contact rail protection cover shown in fig. 1 at two angles, respectively.

Fig. 5 is a schematic structural diagram of a cover body in the open type contact rail protection cover shown in fig. 1.

Fig. 6 is a left side view of the structure of fig. 5.

Fig. 7 is a schematic structural view of a bracket in the open type contact rail protection cover shown in fig. 1.

Fig. 8 is a left side view of the structure of fig. 7.

FIG. 9 is a schematic sectional view A-A of FIG. 8.

Fig. 10 is a schematic view of the structure in the direction B of fig. 8.

Fig. 11 is a schematic structural diagram of a base in the open type contact rail protection cover shown in fig. 1.

Fig. 12 is a schematic top view of fig. 11.

Fig. 13 is a side view of the structure of fig. 11.

Fig. 14 is a schematic view of the open contact rail protective cover of fig. 1 with the cover removed.

Fig. 15 is a right-side view of the structure of fig. 14.

Fig. 16 is a schematic view of the open contact rail shield of fig. 1 installed in a track with the shield in a shielded state.

Fig. 17 is a schematic view of the shield assembly of the present open contact rail shield in the position of fig. 16 lifted relative to the base, the shield being ready to change state.

Fig. 18 is a schematic view of the cover assembly of the present open contact rail cover of the position of fig. 16 rotated to another position relative to the latch shaft with the cover in an inspection and maintenance condition.

Fig. 19 is a schematic view of the cover assembly of the present open contact rail cover of the position of fig. 16 rotated to a further position relative to the latch shaft with the cover in a maintenance service position.

Detailed Description

As shown in fig. 1 to 4, the utility model provides an open-type conductor rail protection casing comprises a plurality of protection casing subassemblies, and every protection casing subassembly is including cover body subassembly and base 3, cover body subassembly is including the cover body 1 and support 2, each protection casing subassembly longitudinal arrangement, and cover body 1 constitutes the conductor rail protection casing of arranging along the conductor rail circuit along the longitudinal end to end of one section of conductor rail 01.

As shown in fig. 5 and 6, the housing 1 includes a vertical side plate 11, a housing top cover 12 is extended transversely from the upper end of the vertical side plate 11 to cover at least the contact rails, and the vertical side plate 11 and the housing top cover 12 form the housing 1 with an inverted L-shaped cross section.

As shown in fig. 7 to 10, the brackets 2 are disposed at intervals on the inner side of the cover body along the longitudinal axis of the cover body 1 and are fixedly connected to the cover body, and as shown in fig. 2, in one cover body assembly, one bracket 2 is disposed at a position close to two ends of one cover body 1. The lower end of the bracket 2 is provided with a pin shaft hole which is parallel to the longitudinal axis of the cover body 1.

The support 2 comprises a support plate 21, the shape of the outer surface of the support plate 21 is matched with the shape of the inner surface of the cover body 1, so that the support plate 21 is attached to the inner side surface of the cover body 1, and bolt holes 211 and 212 are formed in the support plate 21 corresponding to the vertical side plate 11 and the cover top cover 12 of the cover body 1; the inner side surface of the support plate 21 is convexly provided with two vertical rib plates 22, so that the section of the support 2 is in a pi shape, the bolt hole 211 and the bolt hole 212 are arranged between the two vertical rib plates 22 and are positioned on the central line 0 of the support plate 21, and correspondingly, the central line O' of the cover body 1 is provided with a corresponding bolt hole 13 corresponding to the bolt hole on the support 2; the vertical rib plates 22 extend downwards at the lower end of the support plate 21 to form an extension section, and circular pin shaft holes 221 matched with the base 3 and used for mounting the pin shafts 5 to form a hinge structure are arranged on the extension sections of the two vertical rib plates 22.

As shown in fig. 1 and 3 to 10, the cover 1 and the bracket 2 are fixedly connected together by bolts 4 passing through bolt holes 13 on the cover 1 and bolt holes 211 and 212 on the bracket 2. The bolts 4 are connected to the brackets 2 on the vertical side plates 11 and the cover top 12 of the cover 1, respectively.

As shown in fig. 11 to 13, the base 3 has a base plate 31 on which a connecting structure is provided to connect the roadbed, a support connecting portion 32 is provided on the base plate 31, a base pin hole 323 matching with the pin hole 221 on the support 2 is provided on the support connecting portion 32, the base pin hole 323 is a vertical long hole, the support 2 and the base 3 are hinged by inserting the pin shaft 5 in the pin hole 221 and the base pin hole 323, so that the support 2 can rotate and move up and down relative to the base 3, thereby enabling the cover body 1 fixed on the support 2 to cover and expose the contact rail 01 under the protective cover.

The support connecting part 32 on the base 3 is a vertical plate arranged on the symmetrical center line of the base plate 31, the two vertical rib plates 22 on the support 2 are respectively arranged on two sides of the support connecting part 32 and are hinged through the bolt shaft 5, and the positioning structure, namely the positioning bayonet 6, and the notch arranged on the upper end surface of the support connecting part 32 are used for positioning (detailed below). The bracket coupling portion 32 has a different thickness, and a vertical area 32A where the base pin hole 323 is provided has a greater thickness than other areas of the bracket coupling portion 32.

As shown in fig. 14 and 15, a positioning structure is provided between the bracket 2 and the base 3, so that the cover assembly can be positioned relative to the base 3 at two positions of completely covering the contact rail 01 and completely exposing the contact rail 01 and a set position between the two positions to implement protection, inspection, maintenance and repair of the contact rail 01. In the embodiment shown in fig. 1, the positioning structure is: the upper end of the bracket connecting part 32 on the base 3 is provided with a notch, correspondingly, two vertical rib plates 22 of the bracket 2 are provided with positioning clamp pin holes 222, a positioning clamp pin 6 is inserted and fixed in the positioning clamp pin holes 222, and the positioning clamp pin 6 is inserted and fixed in one notch on the base 3, so that the bracket 2 is positioned on a set position relative to the base. As shown in fig. 11, two notches are provided at the upper end of the base 3, wherein the notch 324 closer to the contact rail 01 is deeper, and the notch 325 on the outer side is shallower.

As shown in fig. 16 to 19, the depth of the two slots at the upper end of the bracket connecting portion 32 on the base 3, the length of the vertical long hole of the base pin shaft hole 323 on the base 3 and the position of the cover 1 have the following matching relationship:

when the positioning bayonet 6 on the bracket 2 is positioned at the bottom of the deeper notch 324, the latch shaft 5 penetrating through the latch shaft hole 221 on the bracket 2 is positioned at the lower end of the base latch shaft hole 323 on the base, and at the moment, the cover body completely covers the contact rail and is in a protection state; (see FIG. 16)

When the positioning bayonet 6 on the bracket 2 is positioned at the bottom of the shallow notch 35, the latch shaft 5 is positioned at the middle part of the base pin shaft hole 33, and at the moment, the cover body 1 inclines towards the outer side of the contact rail 01 to expose the contact rail 01 and is in an inspection and maintenance state (see fig. 18);

when the latch shaft 5 is located at the upper end of the base latch shaft hole 323 and the positioning latch 6 is located on the outer side surface of the bracket connecting portion 32 of the base 3, the cover 1 is turned outward, the vertical side plate 11 thereof falls on the rail base plane outside the contact rail 01, and the contact rail 01 and the support therebelow are exposed and are in a maintenance state (see fig. 19).

The surface between two slots on the upper end face of the bracket connecting part 32 in the base 3 and connected with the vertical side face is a cylindrical surface 326, the axis of the cylindrical surface 326 is located at the axis of the bolt shaft 5 at the upper end of the vertical long hole of the base bolt shaft hole 323, so that in the process of turning to another slot or moving to the outer side face of the bracket connecting part 32 when the positioning bayonet lock 6 moves out from the upper end of the slot, the bolt shaft 5 is located at the upper end of the base bolt shaft hole, the positioning bayonet lock 6 can move by taking the axis of the bolt shaft 5 as the center of a circle and taking the distance from the center of the cover to the cylindrical surface as the radius, and the positioning bayonet lock 6 always moves on the upper end face of the bracket connecting part.

As shown in fig. 1, 2, 14 and 15, pin holes are provided in the latch shaft 5 and the positioning pin shaft 6, and after the latch shaft 5 and the positioning pin shaft 6 are inserted into the respective insertion holes, cotter pins 7 are inserted into the pin holes for axial positioning. Nylon washers 8 (see fig. 1) may also be provided on the latch shaft 5 and the positioning pin shaft 6.

The edge of the vertical plate of the bracket connecting part 32 on the base 3, which is far away from the side of the contact rail 01, is flush with the corresponding edge of the base plate 31 (see fig. 11 and 12), and the connecting structure on the base plate 31 for connecting the roadbed is a plurality of long holes 311 parallel to the central line. In this embodiment, the number of the long holes is three, and the three long holes are respectively arranged on two sides and a central line of the vertical plate, and the centers of the three long holes form an isosceles triangle.

A cover body and two supports are fixedly connected into a movable part-cover body assembly of the contact rail protective cover through bolts 4, two bases 3 are fixed on a foundation beside a contact rail 01 to form a contact rail protective cover fixing part, the two parts form an open type contact rail protective cover unit assembly, and a plurality of unit assemblies are connected in series and are arranged one by one along the contact rail to protect the contact rail. The covers in each cover unit assembly are joined end-to-end, but do not overlap, so that each cover can be individually lifted or covered.

The cover body 1, three part of support 2 and base 3, one of them cover body 1 and two supports 2 are a set of with bolt fixed connection one-tenth an organic whole, establish ties on contact rail 01 is other two bases 3 of inlaying with connecting pieces such as plug pin shaft 5 with this part group, the part of cover body 1 and support 2 an organic whole makes things convenient for personnel to open, the cover body subassembly that the cover body and support constitute makes the safety cover have three position through location structure, the protection state, inspection state and maintenance state, still can set up more positions according to the demand. The contact rail protective cover arranged along the contact rail line is formed by a plurality of groups of openable cover body units, and the protective cover can provide good protection for the contact rail and workers entering the rail. Because the self-gravity locking and positioning mode of clamping the notch and the positioning pin shaft is adopted, complex operation procedures are not needed during opening and closing, the operation is extremely convenient for workers, and particularly, the safe and reliable operation of a contact rail power supply system can be ensured by checking, maintaining and repairing parts of the contact rail 01 and the collector shoe 03 on the vehicle when the electric locomotive 02 stops.

The utility model provides a cover body 1, support 2 and base 3 in the open-type conductor rail protection casing are all made with insulating non-metallic material.

When the open type contact rail protective cover is installed, every two bases are in a group and are fixed on a working foundation surface 04 by anchor bolts; when the protection state is closed (as shown in fig. 16), the two latch shafts 5 on the two brackets 2 are arranged at the lowest positions of the two vertical long holes on the base 3, and the protection cover is locked at the moment to form the protection state. When the protection casing is opened by protection shutting operating condition, only need buckle the cover body both ends and mention the cover body perpendicularly upwards with the hand, cover body subassembly is along base 3 upper bracket connecting portion 32's closed vertical slotted hole groove upward movement to slotted hole when being most at the most, the vertical upper shed open-slot unhook on locating pin 6 and the base riser on the support, cover body subassembly puts down when cover body subassembly can rotate to reservation position opening screens recess on base 3, locating pin 6 on the support 2 slides in the open-slot of base upper opening screens, accomplish protection casing maintenance operating condition's shutting.

The open type contact rail protective cover provides good protection for the contact rail and related personnel, and meanwhile, the maintenance is more convenient and faster. The main body parts of the contact rail protective cover are connected in a thread-free mode, so that the danger that the parts are loosened due to vibration of a working condition environment is avoided, and the reliability of the system is improved. Because, adopt swift opening the structure and avoided because the damage that the repeated dismantlement of connecting bolt led to the fact the protection casing, can prolong contact rail protection casing life.

Claims (14)

1. The utility model provides an open-type conductor rail protection casing which characterized in that: is composed of a plurality of protective cover components, each protective cover component comprises a cover body component and a base,

the cover body component comprises a cover body and a bracket,

the cover body comprises a vertical side plate, and a cover top cover is transversely arranged at the upper end of the vertical side plate in an extending manner so as to at least cover the contact rail;

the bracket is arranged on the inner side of the cover body at intervals along the longitudinal axis of the cover body and is fixedly connected with the cover body, and the lower end of the bracket is provided with a pin shaft hole parallel to the longitudinal axis;

the base is provided with a base plate, a connecting structure is arranged on the base plate to be connected with a roadbed, a support connecting part is arranged on the base plate, a base pin shaft hole matched with the pin shaft hole in the support is arranged on the support connecting part, the base pin shaft hole is a vertical long hole, the support and the base are hinged and connected through a pin shaft penetrating through the pin shaft hole and the base pin shaft hole, so that the support can rotate and move up and down relative to the base, and the cover body fixed on the support can cover and expose the contact rail under the protective cover;

each protection cover subassembly is vertically arranged, the cover body is along the contact rail a section longitudinal end to end, constitutes the contact rail protection casing of arranging along the contact rail circuit.

2. The open contact rail guard of claim 1, wherein: and a positioning structure is arranged between the bracket and the base, so that the cover body component can be positioned relative to the base at two positions of completely covering the contact rail to be completely exposed and a set position between the two positions.

3. The open contact rail guard of claim 2, wherein: the positioning structure is as follows: the bracket is characterized in that a notch is formed in the upper end of the bracket connecting part on the base, and correspondingly, a positioning bayonet lock is arranged on the bracket and inserted into the notch, so that the bracket is positioned relative to the base.

4. The open contact rail guard of claim 3, wherein: the upper end of the base is provided with two notches, and the notch closer to the contact rail is deeper.

5. The open contact rail guard of claim 4, wherein: two of base upper end the degree of depth of breach groove, with the length of the vertical slot hole in the base round pin shaft hole on the base and the position of the cover body has as follows the matching relation:

when the positioning bayonet lock on the bracket is positioned at the bottom of the deeper notch, the latch shaft penetrating through the latch shaft hole on the bracket is positioned at the lower end of the base latch shaft hole on the base, and at the moment, the cover body completely covers the contact rail and is in a protection state;

when the positioning bayonet lock on the bracket is positioned at the bottom of the shallow notch, the plug pin shaft is positioned in the middle of the base pin shaft hole, and at the moment, the cover body inclines towards the outer side of the contact rail to expose the contact rail, so that the contact rail is in an inspection and maintenance state;

when the plug pin shaft is positioned at the upper end of the base plug pin shaft hole and the positioning bayonet pin is positioned on the side surface of the base, the vertical side plate of the cover body falls on the rail foundation plane outside the contact rail, and the contact rail and the support below the contact rail are exposed and are in a maintenance state.

6. The open contact rail protection cover according to one of claims 3 to 5, wherein: the surface of the upper end face of the base, which is connected between the slots and the vertical side plate, is a cylindrical surface, and the axis of the cylindrical surface is located at the axis of a bolt shaft at the upper end of a vertical long hole in the bolt shaft hole of the base, so that when the positioning clamping pin moves out from the upper end of the slots, the bolt shaft is located at the upper end of the bolt shaft hole of the base, and the positioning clamping pin moves on the cylindrical surface on the base.

7. The open contact rail guard of claim 1, wherein: the two brackets are connected to one section of the cover body.

8. The open contact rail guard of claim 1, wherein: the cover body and the support are fixedly connected into a whole through bolts.

9. The open contact rail guard of claim 8, wherein: the bolts are respectively connected with the support on the vertical side plate of the cover body and the cover top cover.

10. The open contact rail guard of claim 1, wherein: the cross section of the cover body is in an inverted L shape.

11. The open contact rail guard of claim 1, wherein: the bracket comprises a bracket plate, the shape of the outer surface of the bracket plate is matched with the shape of the inner surface of the cover body, so that the bracket plate is attached to the inner side surface of the cover body, and bolt holes are formed in the bracket corresponding to the vertical side plate of the cover body and the cover top cover; two vertical rib plates are convexly arranged on the inner side surface of the support plate, so that the section of the support is in a Pi shape; the vertical rib plates extend downwards to form an extension section at the lower end of the support plate, and circular holes matched with the base and used for installing the bolt shafts are formed in the extension sections of the two vertical rib plates.

12. The open contact rail guard of claim 11, wherein: the extending sections of the two vertical rib plates are also provided with circular clamping pin holes for mounting and positioning clamping pins; and/or the presence of a gas in the gas,

the support connecting part on the base is a vertical plate arranged on the symmetrical center line of the base plate, the two vertical rib plates on the support are respectively arranged on two sides of the vertical plate and are hinged through a bolt shaft, and the vertical rib plates are positioned through a positioning bayonet lock and a notch.

13. The open contact rail guard of claim 1, wherein: the edge of one side, away from the contact rail, of a vertical plate serving as the support connecting part on the base is flush with the corresponding edge of the base plate, and the connecting structure for connecting the roadbed on the base plate is a plurality of long holes parallel to the symmetrical center line of the base plate; and/or the presence of a gas in the gas,

the thickness of the support connecting part is unequal, and the thickness of a vertical area where the base pin shaft hole is located is larger than that of other areas of the support connecting part.

14. The open contact rail guard of claim 13, wherein: the three long holes are respectively arranged on the two sides and the central line of the vertical plate, and the centers of the three long holes form an isosceles triangle.

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