CN217922226U

CN217922226U - Air spraying cover assembly and special-shaped rail heat treatment air spraying device

Info

Publication number: CN217922226U
Application number: CN202222372152.7U
Authority: CN
Inventors: 程晶晶; 侯斌
Original assignee: Baogang China Railway Track Co ltd
Current assignee: Baogang China Railway Track Co ltd
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2022-11-29
Anticipated expiration: 2032-09-06

Abstract

The utility model relates to the technical field of heat treatment of special-shaped rails, in particular to a wind-spraying cover component and a wind-spraying device for heat treatment of special-shaped rails; the hot-pressing device comprises a wind spraying cover for spraying wind to the hot-pressed special-shaped rail and a supporting unit for supporting the wind spraying cover; the air spraying cover is arranged on the supporting unit; the height of the air-jet cover corresponds to that of the special-shaped rail; the air spraying cover is connected with the air source assembly, and the air source assembly is used for guiding the generated high-pressure cooling gas into the air spraying cover; directly blowing the rail top and two sides of the rail top of the special-shaped rail through the opposite-spraying wind cover; after the special-shaped section of the special-shaped rail is heated, an air injection port corresponding to the top surface of the special-shaped rail is arranged so as to inject air to the top of the heated special-shaped rail and two sides of the top of the heated special-shaped rail.

Description

Air spraying cover assembly and special-shaped rail heat treatment air spraying device

Technical Field

The utility model relates to a special-shaped rail thermal treatment technical field, concretely relates to spout wind cowl subassembly and special-shaped rail thermal treatment and spout wind device.

Background

The special-shaped rail is a special-shaped steel rail with two different rail-shaped section rail ends; when steel rails with different section types need to be connected, a fishtail clamp plate or a steel rail is needed to realize the connection due to different section sizes of the steel rails, and the fishtail clamp plate or the steel rail for connecting the steel rails with different section types is called a special fishtail clamp plate or a special rail; but the special fishtail splint is easy to damage in this way; therefore, the profiled rail is generally processed by a press forming process at present.

As shown in fig. 1, which is a schematic structural diagram of a profiled rail, one end of the profiled rail is of one rail type, and the other end of the profiled rail is of another rail type, and the profiled rail is obtained by adopting a forging process; the main process flow of the process is as follows: heating the special-shaped section by using a heating device such as a medium-frequency induction heating furnace and the like, and forging and forming after reaching a specified temperature; at present, the top surface of the irregular rail is cooled in a natural cooling mode after forging and pressing molding, so that the hardness of the top surface of the irregular rail is low due to the cooling mode, and the requirement of factory inspection cannot be met;

in the related technology, for example, the cooling device and the cooling method for the rail welding part with the publication number of CN102361725B, the air injection device is used for injecting air after the heat treatment of the sleeper, so as to solve the problem of low rail top hardness, when the special-shaped rail is produced, the fixing surface of the special-shaped rail needs to be subjected to the heat treatment and then is integrally and uniformly injected, as shown in fig. 11, the existing air injection cover is a simple structure with one air source for a plurality of nozzles, and based on the technical background, the inventor designs an air injection cover assembly and a special-shaped rail heat treatment air injection device using the air injection cover assembly.

Disclosure of Invention

The utility model provides a spout wind cover subassembly and abnormal shape rail thermal treatment and spout wind device aims at solving the condition that current air supply is uneven to a plurality of nozzles, air current.

The utility model discloses a technical scheme as follows: an air-jet cover assembly comprises an air-jet cover, wherein the air-jet cover is of a closed cavity structure; one side of the air injection cover is uniformly provided with an air injection nozzle communicated with the inner cavity; partition plates are uniformly arranged in the air blowing cover and divide the interior of the air blowing cover into a plurality of independent small spaces; each small space is correspondingly provided with an air source assembly; a plurality of flow distribution plates are arranged in the small space, and the flow distribution plates are connected with the upper side and the lower side of the small space to form a flow distribution channel; the air source assembly is communicated with the air nozzle through the flow dividing channel.

Furthermore, one side of the flow distribution plate close to the air nozzle is a straight line section, and the other side of the flow distribution plate is in an arc shape which is contracted towards the air source assembly.

Further, the air source assembly comprises an air duct and a valve arranged on the air duct, and the air duct is also provided with an air pressure gauge.

The application also provides an air injection device for the heat treatment of the special-shaped rail, which comprises the air injection cover assembly in any one of the embodiments and a supporting unit for supporting the air injection cover; the air spraying cover is arranged on the supporting unit; the height of the air-jet cover corresponds to that of the special-shaped rail; the air-jet cover is connected with the air source assembly, and the air source assembly is used for introducing the generated high-pressure cooling gas into the air-jet cover; directly blowing the rail top of the special-shaped rail through the opposite-spraying wind cover.

Further, the air-jet cover comprises a lower cover body for directly blowing the top surface of the special-shaped rail and a side cover body for directly blowing the side part of the top of the special-shaped rail; the lower air spraying cover is fixed on the supporting unit; the side cover body is movably connected with the supporting unit.

Furthermore, the side cover body is movably connected with the supporting unit through a push rod and a side supporting part, the lower side of the side supporting part is vertically fixed with the supporting unit, the push rod is arranged on the upper side below the side supporting part, and the push head of the push rod is fixed with the side cover body.

Furthermore, the side cover body is movably connected with the supporting unit through a motor and a counter slide block group; the heterodromous sliding block group comprises a sliding seat, sliding grooves are formed on the sliding seat, the two sliding blocks are respectively in sliding fit with the sliding seat through the sliding grooves, and the upper sides of the sliding blocks are respectively fixed with the side cover body; the motor is arranged on one side of the sliding seat, a bearing seat component corresponding to the motor is arranged on the other side of the sliding seat, after the two lead screws in different directions are fixed, one side of the lead screws is fixed with a motor shaft of the motor, and the other side of the lead screws is in running fit with the bearing seat component; the slide block is respectively matched with the two lead screws in different directions in a threaded manner.

Further, the supporting unit comprises a plurality of inverted U-shaped supporting legs; be equipped with the crossbeam between the supporting leg, fix through the longeron between the crossbeam.

Furthermore, one end of the air-jet cover is provided with a pretreatment device for removing oxide skin generated on the hot irregular rail; the pretreatment device comprises a fixed frame fixed with the supporting unit, the fixed frame is of an annular structure, the deformed rail after hot press forming can penetrate through the fixed frame, and a steel wire brush is arranged on the inner side of the fixed frame.

The utility model discloses possess following characteristics: one side of the air-jet cover facing to the special-shaped rail is uniformly provided with air-jet nozzles communicated with the inner cavity; in order to ensure that the air pressure sprayed by each air spray nozzle is relatively stable, partition plates are uniformly arranged in the air spray cover and divide the interior of the air spray cover into a plurality of independent small spaces; every little space corresponds and sets up an air supply subassembly, owing to will spout the wind cap and separate the setting to it is more stable to make the air current of spouting tuyere spun.

Drawings

Fig. 1 is a schematic view of a profile rail structure.

Fig. 2 is a schematic view of the overall structure of the present invention.

Fig. 3 is a schematic structural view of the wind-jet cover of the present invention.

Fig. 4 is a schematic structural diagram of the slide seat of the present invention.

Fig. 5 is a schematic view of the slider structure of the present invention.

Fig. 6 is a schematic view of the supporting leg structure of the present invention.

Fig. 7 is a schematic structural view of the inner cavity of the wind-jet cover of the present invention.

Fig. 8 is a schematic structural diagram of the air source assembly of the present invention.

Fig. 9 is a schematic view of the wind pressure head structure of the present invention.

Fig. 10 is a schematic view of the structure of the wire brush of the present invention.

FIG. 11 is a schematic view of a conventional simple nozzle cover.

Fig. 12 is a schematic diagram of the present invention.

In the figure, 1, a wind spraying cover; 2. a support unit; 3. a gas source assembly; 4. a lower cover body; 5. a side cover body; 6. a push rod; 7. a side supporting portion; 8. a support plate; 9. mounting a plate; 10. a motor; 11. a lead screw; 12. a slide base; 13. a slider; 14. supporting legs; 15. a cross beam; 16. a stringer; 17. a blast nozzle; 18. a baffle plate; 19. a flow distribution plate; 20. a flow distribution channel; 21. an air duct; 22. a valve; 23. fixing the frame; 24. a wind pressure head; 25. a wire brush; 26. and (4) a wind pressure meter.

Detailed Description

To facilitate understanding of the present invention for those skilled in the art, embodiments of the present invention will be described below with reference to the accompanying drawings.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; the specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 2, the utility model provides an air-jet cover assembly and an air-jet device for heat treatment of a special-shaped rail, which comprises an air-jet cover 1 for jetting air to the special-shaped rail after hot pressing and a supporting unit 2 for supporting the air-jet cover 1; the air-jet cover 1 is arranged on the supporting unit 2, so that the position of the air-jet cover 1 corresponds to the position of the irregular rail; the air blast cover 1 is connected with the air source component 3, and the air source component 3 is used for leading the generated high-pressure cooling gas into the air blast cover 1; after the high-pressure cooling gas is led out by the air-jet cover 1, the rail top of the deformed rail after hot-press forming is directly blown, so that the rail top surface of the deformed rail is quickly cooled and subjected to heat treatment, and the hardness of the deformed rail top surface is improved.

The special-shaped rail is inverted in a special shape when hot press molding is carried out, and the transmission wheel supports and transmits the protrusion of the bottom surface of the special-shaped rail; therefore, during the hot-press molding processing, the special-shaped rail is in an inverted state; as shown in fig. 3, the air blowing cover 1 includes a lower cover 4 for directly blowing the top surface of the profiled rail and a side cover 5 for directly blowing the side portion of the top of the profiled rail; because the height difference of the rails of the special-shaped rail is not large, the lower air-jet cover 1 and the supporting unit 2 can be fixedly connected through the locking piece; thus ensuring the consistent distance between the lower cover body 4 and the top surface of the special-shaped rail; because the width of the profiled rails is different in machining, the side cover body 5 is movably connected with the supporting unit 2, so that the distance between the side cover body 5 and the profiled rails is adjusted, and the side cover body 5 and the profiled rails of different types keep consistent air spraying distance; thereby ensuring even air spraying to the irregular rails of various types.

Example one

As shown in fig. 3, the side cover body 5 is movably connected with the supporting unit 2 through a push rod 6 and a side supporting part 7, the side supporting part 7 comprises a vertical supporting plate 8 and a zigzag mounting plate 9, the lower side of the supporting plate 8 is vertically fixed with the supporting unit 2 so that the side cover body 5 maintains the height corresponding to the irregular rail, the upper side of the supporting plate 8 is fixed with the mounting plate 9, the mounting plate 9 is used for fixing the push rod 6, and the push head of the push rod 6 penetrates through the mounting plate 9 and is fixed with the side cover body 5; the push rod 6 can be any one of an electric push rod 6, a hydraulic push rod 6 and a pneumatic push rod 6; the distance between the side cover body 5 and the side part of the top of the irregular rail is adjusted by adjusting the length of the push rod 6 (controlling the push rod 6 to extend and shorten is the prior art and is not described in detail); therefore, after forging and pressing the profiled rail top, stable and uniform air spraying is carried out; and carrying out heat treatment in a rapid cooling mode to ensure the hardness of the rail top of the special-shaped rail.

Example two

As shown in fig. 4, the side cover 5 is movably connected with the supporting unit 2 through a motor 10 and a counter slide 13 group; referring to fig. 5, the set of counter slide blocks 13 includes a slide base 12, a sliding slot is formed on the slide base 12, the two slide blocks 13 are respectively in sliding fit with the slide base 12 through the sliding slot, and the upper sides of the slide blocks 13 are respectively fixed with the side cover 5; the motor 10 is arranged on one side of the sliding seat 12, the other side of the sliding seat 12 is provided with a bearing seat component corresponding to the motor 10, after the two lead screws 11 in different directions are fixed through a coupler, one side of the lead screws is fixed with a shaft of the motor 10 through the coupler, and the other side of the lead screws is in running fit with the bearing seat component; the sliding blocks 13 are respectively in threaded fit with the two lead screws 11 in different directions; the driving motor 10 rotates (the driving motor 10 rotates clockwise and anticlockwise in the prior art), so that the two lead screws 11 in different directions are driven to synchronously rotate, and the two sliding blocks 13 are driven to move towards or away from each other; so as to adjust the distance between the side cover body 5 and the side part of the top of the irregular rail; therefore, after the irregular rail top is forged and pressed, stable and uniform air spraying is carried out; and carrying out heat treatment in a rapid cooling mode to ensure the hardness of the rail top of the special-shaped rail.

As shown in fig. 6, the supporting unit 2 is used for supporting the wind-jet cover 1 so that the position of the wind-jet cover 1 corresponds to the position of the profile rail, and specifically, the supporting unit 2 includes a plurality of inverted U-shaped supporting legs 14; the cross beams 15 for reinforcement are arranged between the supporting legs 14, the cross beams 15 are fixed through the longitudinal beams 16, and the structure of the supporting unit 2 is more stable through the arrangement of the cross longitudinal beams 16.

Further, the air-blowing cover 1 needs to ensure that air is uniformly blown to the top of the profiled rail to achieve a better heat treatment effect, as shown in fig. 7, the air-blowing cover 1 is a closed cavity structure, and the length of the air-blowing cover 1 is 750-850mm to ensure that the length of the air-blowing cover 1 is greater than the length of the processed section of the profiled rail, so that the part subjected to the hot-press forming treatment of the profiled rail is completely covered; one side of the air-jet cover 1 facing the special-shaped rail is uniformly provided with air-jet nozzles 17 communicated with the inner cavity; in order to ensure that the air pressure sprayed by each air nozzle 17 is relatively stable, partition plates 18 are uniformly arranged in the air spraying cover 1, and the partition plates 18 divide the interior of the air spraying cover 1 into a plurality of independent small spaces; each small space is correspondingly provided with one air source assembly 3, and the air jet cover 1 is arranged in a separated manner, so that the air flow sprayed out by the air jet nozzle 17 is more stable; further, the arrangement of the partition plate still cannot ensure that the airflow entering each air nozzle 17 is stable; therefore, a plurality of flow distribution plates 19 are arranged in the small space, the flow distribution plates 19 are connected with the upper side and the lower side of the small space, and flow distribution channels 20 are formed between the flow distribution plates 19; one side of the flow distribution plate 19 close to the air nozzle 17 is a straight line section, and the other side is an arc shape which is contracted towards the air source assembly 3; the cooling compressed gas sprayed from the gas source component 3 passes through the flow distribution plate 19 and is sprayed out from the air nozzle 17 through the flow distribution channel 20; that is to say, the diversion channel 20 connects the air source assembly 3 and the air nozzle 17, and the balance of air pressure is realized through the plurality of diversion channels 20, thereby ensuring the quenching effect.

Further, the air source assembly 3 is used for introducing external high-pressure cooling air into the air blowing cover 1 to perform heat treatment cooling on the top of the irregular rail, as shown in fig. 8, the air source assembly 3 comprises an air duct 21 and a valve 22 arranged on the air duct 21, the valve 22 can be a manual valve, and the flow of the valve 22 can be manually adjusted to adjust the air pressure sprayed out of the air blowing cover 1; further, it was found that the ejection air pressure could not be observed near the side of the hood 1, and was then at the air duct 21; an air pressure gauge 26 is arranged on the air duct 21, and the air pressure flowing through the air duct 21 can be observed through the air pressure gauge 26; the valve 22 can also be an electromagnetic valve which is electrically connected with a time relay, and the blowing time of the air blowing cover 1 is controlled by the electromagnetic valve; so as to control the heat treatment cooling time of the profiled rail, thereby ensuring the heat treatment cooling time of the profiled rail.

In the implementation, a large amount of oxide skin is generated on the surface of the special-shaped rail after hot press molding, and after the hot press molding is carried out through the heat treatment and cooling of the air blowing cover 1 of the device, the oxide skin is blown everywhere, so that the environment is seriously influenced; therefore, a pretreatment device for removing scale generated on the hot profile rail is provided at one end of the wind-jet cover 1.

EXAMPLE III

As shown in fig. 9, the pretreatment device includes a fixed frame 23 fixed to the support unit 2, the fixed frame 23 is an annular structure, the profiled rail after hot press forming can pass through the fixed frame 23, wind pressure heads 24 are uniformly arranged on the fixed frame 23, and the wind pressure heads 24 are used for being connected with external high-pressure air to perform high-pressure blowing on the profiled rail as a whole, so as to remove oxide skin attached to the surface after hot press forming.

Example four

As shown in fig. 10, the pretreatment device includes a fixed frame 23 fixed to the support unit 2, the fixed frame 23 is a ring structure, the profiled rail after hot press forming can pass through the fixed frame 23, and a steel brush 25 is disposed inside the fixed frame 23; when the special-shaped rail passes through the inner side of the fixed frame 23, the steel wire brush 25 is contacted with the edge of the special-shaped rail; the oxide skin attached to the surface of the profiled rail after the profiled rail is subjected to hot press molding is scraped by the steel wire brush 25.

The above-mentioned fixing methods, if not separately described, all use the means of common technique of those skilled in the art, such as welding, nesting, or screw fixing.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-mentioned embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A wind cap assembly characterized in that: the air-jet cover comprises an air-jet cover (1) which is a closed cavity structure; one side of the air-jet cover (1) is uniformly provided with an air-jet nozzle (17) communicated with the inner cavity; partition plates (18) are uniformly arranged in the air blowing cover (1), and the partition plates (18) divide the interior of the air blowing cover (1) into a plurality of independent small spaces; each small space is correspondingly provided with an air source assembly (3); a plurality of flow distribution plates (19) are arranged in the small space, and the flow distribution plates (19) are connected with the upper side and the lower side of the small space to form a flow distribution channel (20); the air source assembly (3) is communicated with the air nozzle (17) through the flow dividing channel (20).

2. The air cap assembly of claim 1, wherein: one side of the flow distribution plate (19) close to the air nozzle (17) is a straight line segment, and the other side of the flow distribution plate is in an arc shape which shrinks towards the air source assembly (3).

3. The cap assembly of claim 1, wherein: the air source assembly (3) comprises an air duct (21) and a valve (22) arranged on the air duct (21), and an air pressure gauge (26) is further arranged on the air duct (21).

4. The utility model provides a deformed rail thermal treatment air blast apparatus which characterized in that: comprising a nozzle hood assembly according to claim 1, and a support unit (2) for supporting the nozzle hood (1); the air-jet cover (1) is arranged on the supporting unit (2); the height of the air-jet cover (1) corresponds to that of the special-shaped rail; the air blowing cover (1) is connected with the air source component (3), and the air source component (3) is used for introducing generated high-pressure cooling gas into the air blowing cover (1); the wind blowing cover (1) is directly blown to the rail top of the special-shaped rail.

5. A profiled rail heat treatment air injection apparatus according to claim 4, wherein: the air blowing cover (1) comprises a lower cover body (4) for directly blowing the top surface of the special-shaped rail and a side cover body (5) for directly blowing the side part of the top of the special-shaped rail; the lower air-jet cover (1) is fixed on the supporting unit (2); the side cover body (5) is movably connected with the supporting unit (2).

6. A profiled rail heat treatment air injection apparatus according to claim 5, wherein: the side cover body (5) is movably connected with the supporting unit (2) through a push rod (6) and a side supporting part (7), the lower side of the side supporting part (7) is vertically fixed with the supporting unit (2), the push rod (6) is arranged on the upper side below the side supporting part (7), and the push head of the push rod (6) is fixed with the side cover body (5).

7. A profiled rail heat treatment air injection apparatus according to claim 5, wherein: the side cover body (5) is movably connected with the supporting unit (2) through a motor (10) and a counter slide block (13) group; the counter slide block (13) set comprises a slide seat (12), slide grooves are formed on the slide seat (12), the two slide blocks (13) are respectively in sliding fit with the slide seat (12) through the slide grooves, and the upper sides of the slide blocks (13) are respectively fixed with the side cover body (5); the motor (10) is arranged on one side of the sliding seat (12), a bearing seat component corresponding to the motor (10) is arranged on the other side of the sliding seat (12), after the two guide screws (11) in different directions are fixed, one side of the guide screws is fixed with the motor (10) shaft of the motor (10), and the other side of the guide screws is in running fit with the bearing seat component; the sliding blocks (13) are respectively in threaded fit with the two lead screws (11) in different directions.

8. A profiled rail heat treatment air injection apparatus as claimed in claim 4, wherein: the supporting unit (2) comprises a plurality of inverted U-shaped supporting legs (14); and cross beams (15) are arranged between the supporting legs (14), and the cross beams (15) are fixed through longitudinal beams (16).

9. A profiled rail heat treatment air injection apparatus according to claim 4, wherein: one end of the air spraying cover (1) is provided with a pretreatment device for removing oxide skin generated on the hot deformed rail; the pretreatment device comprises a fixed frame (23) fixed with the support unit (2), the fixed frame (23) is of an annular structure, the deformed rail after hot press forming can penetrate through the fixed frame (23), and a steel wire brush (25) is arranged on the inner side of the fixed frame (23).