CN113774372A - Cold spraying repair device and repair process for cracks of steel member - Google Patents

Abstract

The invention discloses a cold spraying repair device for cracks of a steel member and a repair process thereof, and the cold spraying repair device comprises a positioning assembly arranged on a base and used for fixing a workpiece, wherein a spraying mechanism capable of moving along the vertical direction is arranged above the positioning assembly, the spraying mechanism comprises a U-shaped plate, a spraying container and a first fixing plate, a U-shaped opening of the U-shaped plate faces downwards, the bottom of the inner side of the U-shaped plate is rotatably connected with a rectangular frame, the spraying container is rotatably connected with the inner side of the rectangular frame through shaft levers connected with two sides of the spraying container, a circle center through hole is formed in the spraying container along the central axis of the spraying container, a first spraying pipe is rotatably connected with the inside of the circle center through hole, a second spraying pipe is arranged in the first spraying pipe, and the bottom end of the second spraying pipe is nested into the first spraying pipe and is in limited sliding connection with the first spraying pipe along the axial direction. The invention can carry out cold spraying operation on workpieces with different sizes, the spraying direction of the spray head is always vertical to the outer side of the workpiece, the spraying distance is adjustable, and the cold spraying effect is better.

Description

Cold spraying repair device and repair process for cracks of steel member

Technical Field

The invention belongs to the technical field of sand paper manufacturing, and particularly relates to a cold spraying repair device and a repair process for cracks of a steel member.

Background

The metal component can be because of corroding the crackle after long-time the use, in order to prolong its life, adopt the cold spray mode to repair metal material spraying to crackle department usually, but current spraying prosthetic devices is still not nimble enough when using, and the control range of shower nozzle is little, leads to its applicable steel component effectively to be unable to adjust its spraying scope, to the steel component of equidimension not, the unable whole restoration face of perpendicular to steel component in position of its shower nozzle, and then the spraying repair effect that leads to the steel component is poor.

Disclosure of Invention

The invention aims to provide a cold spraying repair device for cracks of a steel member and a repair process thereof, and aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a cold spraying repair device for cracks of a steel member comprises a positioning assembly arranged on a base and used for fixing a workpiece, wherein a spraying mechanism capable of moving along the vertical direction is arranged above the positioning assembly, the spraying mechanism comprises a U-shaped plate, a spraying container and a first fixing plate, a U-shaped opening of the U-shaped plate faces downwards, the bottom of the inner side of the U-shaped plate is rotatably connected with a rectangular frame, the spraying container is rotatably connected with the inner side of the rectangular frame through shaft rods connected with two sides of the spraying container, a circle center through hole is formed in the spraying container along the central axis of the spraying container, a first spraying pipe is rotatably connected with the inside of the circle center through hole, a second spraying pipe is arranged in the first spraying pipe, and the bottom end of the second spraying pipe is nested into the first spraying pipe and is in limited sliding connection with the first spraying pipe along the axial direction; the top of the U-shaped plate is fixedly provided with a third motor, the axis of a motor shaft of the third motor and the axis of the positioning assembly are positioned on the same vertical line, the motor shaft of the third motor downwards penetrates through the U-shaped plate and then is fixedly connected with an installation frame arranged along the horizontal direction, the inner side of the installation frame is in driving connection with a transmission block capable of reciprocating along the horizontal direction, the bottom of the transmission block is fixedly connected with a connecting piece, and the top end of the second spraying pipe upwards extends out of the spraying container and then is hinged to the connecting piece; the bottom of first spray pipe extends to and is connected with the connecting plate after the spraying container is outside, be provided with the consecutive first flexible pipe fitting that slides between connecting plate and the first fixed plate, the flexible pipe fitting of second and the flexible pipe fitting of third, the one end of first flexible pipe fitting is fixed in on the connecting plate and is linked together with first spray pipe, the bottom mounting of the flexible pipe fitting of third is on first fixed plate, be located first flexible pipe fitting between connecting plate and the first fixed plate, the both sides of the flexible pipe fitting of second and the flexible pipe fitting of third still are connected with first electric telescopic handle, one side of first fixed plate is connected with the second fixed plate, the top fixedly connected with shower nozzle of second fixed plate, and the spraying direction of shower nozzle is parallel with the flexible direction of the flexible pipe fitting of third, be connected with the connecting pipe that is linked together with the flexible pipe fitting of third between shower nozzle and the first fixed plate.

Preferably, the inboard of installation frame is connected with the second threaded rod along its length direction fixedly, and the one end and the installation frame of second threaded rod rotate to be connected, and the other end of second threaded rod is connected with the second motor drive of fixing in installation frame inside, and the driving block screw thread cup joints on the second threaded rod to the both sides of driving block and the inside spacing sliding connection in both sides of installation frame.

Preferably, the first fixing plate is connected with the second fixing plate through two second electric telescopic rods, and the stretching directions of the two second electric telescopic rods are perpendicular to the spraying direction of the spray head.

Preferably, the first spraying pipe is rotatably connected with the circle center through hole through a bearing, the outer side of the bottom of the second spraying pipe is fixedly connected with four sliding blocks which are distributed annularly, the inner wall of the first spraying pipe is provided with a limiting sliding groove matched with the four sliding blocks, and the sliding blocks are nested into the corresponding limiting sliding grooves and are connected with the limiting sliding grooves in a sliding fit mode.

Preferably, a cavity is formed between the inner wall of the spraying container and the outer side of the circle center through hole, a discharge port communicated with the cavity is arranged on the outer side of the spraying container, a plurality of first through holes communicated with the cavity are formed in the inner wall of the circle center through hole, a plurality of second through holes are formed in the inner wall of the first spraying pipe located inside the spraying container, the second through holes can be communicated with the cavity through the first through holes, an installation pipe is arranged at the top end of the second spraying pipe in a communicated mode, and the installation pipe is connected with an external high-speed air cooling mechanism.

Preferably, the support frame is installed along vertical direction in the both sides that the top of base is located locating component, and sliding connection has fixed frame between two support frames, and U-shaped board fixed mounting is on fixed frame, and the inside of every support frame is provided with first threaded rod along vertical direction, and the top of first threaded rod is rotated with the top of support frame and is connected, and the bottom of first threaded rod is connected with the first motor drive of fixing in the base inside.

Preferably, the positioning assembly comprises a placing table fixed on the base, the top of the placing table is fixedly connected with a conical block, and the axis of the motor shaft of the third motor and the axis of the conical block are on the same vertical line.

The invention also provides a cold spraying repair process for the cracks of the steel member, which is based on the device for cold spraying repair of the cracks of the steel member, and the method comprises the following steps:

step one, horizontally mounting a workpiece on a positioning component;

step two, adjusting the position of the spray head to ensure that the spraying direction of the spray head is vertical to the outer side of the workpiece: the whole spraying mechanism moves along the vertical direction to adjust the height of the spray head; the electric driving transmission block slides along the direction of a motor shaft of a third motor from the inner side of the mounting frame, so that the spraying container rotates clockwise around the shaft rod, when the stretching directions of the first stretching pipe fitting, the second stretching pipe fitting and the third stretching pipe fitting are vertical to the outer side of the workpiece, the transmission block is kept fixed, the first electric telescopic rod is started to drive the first fixing plate and the spray head to move, and when the spray head is located at a crack on the outer wall of the workpiece and has a certain spraying distance, the first electric telescopic rod is closed;

and thirdly, controlling the rotation speed and the rotation angle of a third motor through a computer, driving a spray head to rotate around the outer side of the workpiece by the third motor, enabling the spray direction of the spray head to be always vertical to the outer side of the workpiece in the rotating process, enabling metal particles in the spraying container to sequentially pass through a first spraying pipe, a first telescopic pipe, a second telescopic pipe, a third telescopic pipe and a connecting pipe and then to be sprayed out of the spray head, and enabling the spray head to perform cold spraying along a crack path.

Compared with the prior art, the invention provides a cold spraying repair device and a repair process for cracks of a steel member, and the device and the repair process have the following beneficial effects:

(1) the spraying mechanism can be suitable for workpieces of different sizes, can move in the vertical direction, the spray head arranged on the spraying mechanism can be adjusted to be perpendicular to the surface of the steel member, the distance between the spray head and the spraying surface of the steel member can be adjusted through the first electric telescopic rod, the spray head can rotate for three hundred and sixty degrees along the horizontal direction to be sprayed comprehensively during spraying, and can also move in the vertical direction along the surface of the steel member through the second electric telescopic rod, so that the flexibility of the spray head is greatly improved, and the spraying mechanism is suitable for cracks of different shapes.

(2) When third motor drive installing frame rotated, it was rotatory that the installation frame passes through the drive block and drives the connecting piece, it is rotatory to be connected to rotate through connecting piece and slider and to make the connecting piece drive the second spraying pipe, it is rotatory to make the second spraying pipe drive first spraying pipe through the spacing connection of slider and spacing spout, the rotatory in-process of first spraying pipe can drive the motion of spraying container, make the spraying container round the axostylus axostyle swing, the rectangle frame can swing round self and the rotation connecting axle of U-shaped board simultaneously. The motion of spraying container can make the inside metal particle of cavity reach the effect of shaking evenly, makes the more abundant that different metal particle mixes.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:

fig. 1 is a schematic view of the overall structure of a prosthetic device according to the present invention;

FIG. 2 is a schematic view of the prosthetic device of the present invention in an operating state;

FIG. 3 is a schematic view of the overall structure of the spraying mechanism of the present invention;

FIG. 4 is a schematic view of a partial three-dimensional structure of the spray mechanism of the present invention;

FIG. 5 is a schematic three-dimensional view of a mounting frame according to the present invention;

FIG. 6 is a schematic three-dimensional cross-sectional view of a spray container of the present invention;

FIG. 7 is a schematic sectional view of the connection of a first spray pipe and a second spray pipe according to the present invention;

fig. 8 is a partial three-dimensional cross-sectional view of the spray mechanism of the present invention.

In the figure: 1. a base; 2. a placing table; 3. a conical block; 4. a workpiece; 5. a support frame; 6. a first motor; 7. a first threaded rod; 8. a fixing frame; 9. a spraying mechanism; 10. a U-shaped plate; 11. a rectangular frame; 12. a spray container; 13. a shaft lever; 14. a discharging port; 15. a circle center through hole; 16. a cavity; 17. a first through hole; 18. a first spray pipe; 19. a second through hole; 20. a limiting chute; 21. a second spray pipe; 22. a slider; 23. a connecting member; 24. a transmission block; 25. a mounting frame; 26. a second motor; 27. a second threaded rod; 28. a third motor; 29. a fixed mount; 30. a bearing; 31. a connecting plate; 32. a first telescoping tube; 33. a second telescoping tube; 34. a third telescopic pipe fitting; 35. a stopper; 36. a first fixing plate; 37. a first electric telescopic rod; 38. a second electric telescopic rod; 39. a second fixing plate; 40. a spray head; 41. and (4) connecting the pipes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the embodiments of the present invention.

Referring to fig. 1 to 8, the present embodiment provides a cold spraying repair device for cracks of a steel member, which includes a positioning assembly disposed on a base 1 for fixing a workpiece 4, and a spraying mechanism 9 disposed above the positioning assembly and capable of moving in a vertical direction. The locating component is a placing table 2 fixed on the base 1, the top of the placing table 2 is fixedly connected with a conical block 3, and a workpiece 4 is installed on the conical block 3 through a hole at the bottom end and is horizontally placed before repair.

The spraying mechanism 9 comprises a U-shaped plate 10, a spraying container 12 and a first fixing plate 36, wherein a U-shaped opening of the U-shaped plate 10 faces downwards, a rectangular frame 11 is rotatably connected to the bottom of the inner side of the U-shaped plate 10, the spraying container 12 is rotatably connected to the inner side of the rectangular frame 11 through a shaft rod 13 connected to two sides of the spraying container 12, a circle center through hole 15 is formed in the spraying container 12 along the central axis thereof, a first spraying pipe 18 is rotatably connected to the inner side of the circle center through hole 15, a second spraying pipe 21 is arranged in the first spraying pipe 18, the bottom end of the second spraying pipe 21 is nested in the first spraying pipe 18 and is in limited sliding connection with the first spraying pipe 18 along the axial direction, specifically, as shown in fig. 7, the first spraying pipe 18 is rotatably connected to the circle center through hole 15 through a bearing 30, four sliders 22 distributed in an annular shape are fixedly connected to the outer side of the bottom of the second spraying pipe 21, a limiting sliding chute 20 matched with the four sliders 22 is formed in the inner wall of the first spraying pipe 18, the sliding blocks 22 are nested in the corresponding limiting sliding grooves 20 and are connected with the limiting sliding grooves in a sliding fit mode.

The top of the U-shaped plate 10 is fixedly provided with a fixing frame 29, the fixing frame 29 is internally provided with a third motor 28, and the axis of the motor shaft of the third motor 28 and the axis of the conical block 3 are positioned on the same vertical line, so that the center of the steel member to be repaired is coaxial with the rotation axis of the spraying mechanism 9, and the uniform spraying thickness is ensured. A motor shaft of the third motor 28 penetrates through the U-shaped plate 10 downwards and then is fixedly connected with an installation frame 25 arranged along the horizontal direction, the inner side of the installation frame 25 is connected with a driving block 24 capable of reciprocating along the horizontal direction in a driving mode, the bottom of the driving block 24 is fixedly connected with a connecting piece 23, and the top end of the second spraying pipe 21 extends upwards out of the spraying container 12 and then is hinged to the connecting piece 23; the bottom end of the first spraying pipe 18 extends to the outside of the spraying container 12 and then is connected with a connecting plate 31, a first telescopic pipe 32, a second telescopic pipe 33 and a third telescopic pipe 34 which are sequentially connected in a sliding mode are arranged between the connecting plate 31 and a first fixing plate 36, one end of the first telescopic pipe 32 is fixed on the connecting plate 31 and communicated with the first spraying pipe 18, the bottom end of the third telescopic pipe 34 is fixed on the first fixing plate 36, and a stop dog 35 is fixedly connected to the bottom ends of the first telescopic pipe 32 and the second telescopic pipe 33. The metal particles in the spraying container 12 sequentially pass through the first spraying pipe 18, the first telescopic pipe 32, the second telescopic pipe 33, the third telescopic pipe 34 and the connecting pipe 41 and are sprayed out from the spraying head 40.

As a preferred embodiment, a second threaded rod 27 is fixedly connected to the inner side of the mounting frame 25 in the embodiment along the length direction thereof, one end of the second threaded rod 27 is rotatably connected to the mounting frame 25, the other end of the second threaded rod 27 is drivingly connected to a second motor 26 fixed inside the mounting frame 25, the driving block 24 is threadedly sleeved on the second threaded rod 27, two sides of the driving block 24 are slidably connected to two sides of the inside of the mounting frame 25, the driving block 24 is driven by the second motor 26 to slide along the inside of the mounting frame 25, the connecting member 23 at the bottom of the driving block 24 is rotatably connected to the second spray pipe 21 and slidably connected to the second spray pipe 21 and the first spray pipe 18, so that the spray container 12 can rotate clockwise around the shaft 13.

First fixed plate 36 links to each other through two electric telescopic handle 38 between the second fixed plate 39 to two electric telescopic handle 38's flexible direction is perpendicular with the spraying direction of shower nozzle 40, and second electric telescopic handle 38 drives shower nozzle 40 and moves along its piston rod direction, thereby can make shower nozzle 40 perpendicular to steel member surface reciprocate and carry out the spraying, thereby has promoted the spraying scope of shower nozzle 40.

A cavity 16 is formed between the inner wall of the spraying container 12 and the outer side of the circle center through hole 15, a discharge hole 14 communicated with the cavity 16 is arranged on the outer side of the spraying container 12, metal particles with different materials can be injected into the cavity 16 through the discharge hole 14, a plurality of first through holes 17 communicated with the cavity 16 are arranged on the inner wall of the circle center through hole 15, a plurality of second through holes 19 are arranged on the inner wall of a first spraying pipe 18 positioned in the spraying container 12, the second through holes 19 can be communicated with the cavity 16 through the first through holes 17, a mounting pipe fitting is communicated with the top end of a second spraying pipe 21 and is connected with an external high-speed air cooling mechanism, the cavity 16 is filled with the metal particles, when the external high-speed air cooling mechanism injects air into the second spraying pipe 21, when the air passes through the first spraying pipe 18, the air speed is high, and the metal particles in the cavity 16 can be sucked into the air flow through the second through holes 19 and the first through holes 17, the gas drives the metal particles to sequentially pass through the first telescopic pipe fitting 32, the second telescopic pipe fitting 33 and the connecting pipe 41, and finally the metal particles are sprayed out of the spray head 40.

In order to adjust the height of shower nozzle 40, this embodiment is located locating component's both sides at base 1's top and installs support frame 5 along vertical direction, sliding connection has fixed frame 8 between two support frames 5, U-shaped plate 10 fixed mounting is on fixed frame 8, every support frame 5's inside is provided with first threaded rod 7 along vertical direction, the top of first threaded rod 7 is rotated with support frame 5's top and is connected, the bottom of first threaded rod 7 is connected with the drive of first motor 6 of fixing in base 1 inside, it is rotatory through first motor 6 drive first threaded rod 7, and then can drive fixed frame 8 and carry out lift adjustment along support frame 5.

The invention provides a cold spraying repair device for cracks of a steel member.

Then, the position of the shower head 40 is adjusted so that the jetting direction of the shower head 40 is perpendicular to the outer side of the workpiece 4. The second motor 26 is started, the second motor 26 drives the second threaded rod 27 to rotate through the motor shaft, and further drives the transmission block 24 to slide in the installation frame 25 towards the motor shaft direction of the third motor 28, the transmission block 24 drives the connecting piece 23 to move, the connecting piece 23 and the sliding block 22 are connected in a rotating mode, the second spraying pipe 21 and the first spraying pipe 18 are connected in a sliding mode, and further the spraying container 12 can rotate clockwise around the shaft rod 13, the spraying container 12 drives the first telescopic pipe 32, the second telescopic pipe 33 and the third telescopic pipe 34 below to rotate clockwise, and when the telescopic direction of the first telescopic pipe 32, the second telescopic pipe 33 and the third telescopic pipe 34 is perpendicular to the outer side of the workpiece 4, the second motor 26 is closed. The first motor 6 is started, the first motor 6 drives the first threaded rod 7 to rotate through the motor shaft, and then the fixed frame 8 and the spraying mechanism 9 are driven to move in the vertical direction, and the height direction of the spray head 40 is adjusted. The first electric telescopic rod 37 is started, the first fixing plate 36 and the spray head 40 are driven to move by the extension and contraction of the first electric telescopic rod 37, and the purpose of adjusting the spraying distance between the spray head 40 and the outer side of the workpiece 4 is achieved. By adjusting the height of the spray head 40 and the position of the spray head 40 in the telescopic direction of the first electric telescopic rod 37, the spray head 40 is positioned at the outer wall crack of the workpiece 4 and has a certain spraying distance, and then the first motor 6 and the first electric telescopic rod 37 are turned off.

Since the path parameters of the cracks on the outer side of the workpiece 4 are input into the computer through the detection device in advance, the rotation speed and the rotation angle of the third motor 28 and the expansion and contraction of the second electric telescopic rod 38 can be controlled through the computer to perform cold spraying on the cracks. The third motor 28 drives the mounting frame 25 to rotate through the motor shaft, the mounting frame 25 drives the connecting piece 23 to rotate through the transmission block 24, the connecting piece 23 drives the second spraying pipe 21 to rotate, the second spraying pipe 21 drives the first spraying pipe 18 to rotate through the limit connection of the sliding block 22 and the limit sliding groove 20, the spray head 40 is further driven to rotate around the outer side of the workpiece 4, and the spraying direction of the spray head 40 is always perpendicular to the outer side of the workpiece 4 in the rotating process. Meanwhile, the first spraying pipe 18 rotates to drive the spraying container 12 to swing around the shaft 13, and the rectangular frame 11 swings around the rotating connecting shaft of the rectangular frame and the U-shaped plate 10. The spraying container 12 can make the metal particles in the cavity 16 shake up through the above movement, so that different metal particles can be mixed more fully. When the external high-speed air cooling mechanism sprays air into the second spraying pipe 21, when the air passes through the first spraying pipe 18, the air speed is high, and then the metal particles in the cavity 16 can be sucked into the air flow through the second through hole 19 and the first through hole 17, and the air drives the metal particles to sequentially pass through the first telescopic pipe 32, the second telescopic pipe 33 and the connecting pipe 41 and finally be sprayed out from the spray head 40. The rotating speed and the rotating angle of the third motor 28 and the extension and contraction of the second electric telescopic rod 38 are controlled by the computer, so that the spray head 40 can perform cold spraying along the crack path.

In the description of the present invention, the terms "first", "second", "another", and "yet" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (8)

1. The utility model provides a be used for steel member crackle cold spray prosthetic devices, is used for fixed work piece (4) locating component including setting up on base (1), and this locating component's top is provided with spraying mechanism (9) that can follow vertical direction and remove, its characterized in that: the spraying mechanism (9) comprises a U-shaped plate (10), a spraying container (12) and a first fixing plate (36), a U-shaped opening of the U-shaped plate (10) faces downwards, the bottom of the inner side of the U-shaped plate (10) is rotatably connected with a rectangular frame (11), the spraying container (12) is rotatably connected with the inner side of the rectangular frame (11) through a shaft rod (13) connected with two sides of the spraying container, a circle center through hole (15) is formed in the spraying container (12) along the central axis of the spraying container, a first spraying pipe (18) is rotatably connected with the inside of the circle center through hole (15), a second spraying pipe (21) is arranged in the first spraying pipe (18), and the bottom end of the second spraying pipe (21) is nested into the first spraying pipe (18) and is in limited sliding connection with the first spraying pipe along the axial direction; a third motor (28) is fixedly mounted at the top of the U-shaped plate (10), the axis of a motor shaft of the third motor (28) and the axis of the positioning assembly are positioned on the same vertical line, the motor shaft of the third motor (28) downwards penetrates through the U-shaped plate (10) and then is fixedly connected with an installation frame (25) arranged along the horizontal direction, the inner side of the installation frame (25) is in driving connection with a transmission block (24) capable of reciprocating along the horizontal direction, the bottom of the transmission block (24) is fixedly connected with a connecting piece (23), and the top end of the second spraying pipe (21) upwards extends out of the spraying container (12) and then is hinged to the connecting piece (23); the bottom end of the first spraying pipe (18) extends to the outside of the spraying container (12) and then is connected with a connecting plate (31), a first telescopic pipe (32), a second telescopic pipe (33) and a third telescopic pipe (34) which are sequentially connected in a sliding manner are arranged between the connecting plate (31) and a first fixing plate (36), one end of the first telescopic pipe (32) is fixed on the connecting plate (31) and is communicated with the first spraying pipe (18), the bottom end of the third telescopic pipe (34) is fixed on the first fixing plate (36), a first electric telescopic rod (37) is further connected between the connecting plate (31) and the first fixing plate (36) and positioned at two sides of the first telescopic pipe (32), the second telescopic pipe (33) and the third telescopic pipe (34), a second fixing plate (39) is connected at one side of the first fixing plate (36), and a spray head (40) is fixedly connected at the top end of the second fixing plate (39), and the spraying direction of the spray head (40) is parallel to the telescopic direction of the third telescopic pipe fitting (34), and a connecting pipe (41) communicated with the third telescopic pipe fitting (34) is connected between the spray head (40) and the first fixing plate (36).

2. A cold spray repair device for cracks of steel members according to claim 1, characterized in that: the inboard of installation frame (25) is connected with second threaded rod (27) along its length direction fixedly, and the one end and the installation frame (25) of second threaded rod (27) are rotated and are connected, and the other end of second threaded rod (27) is connected with the drive of second motor (26) of fixing in installation frame (25) inside, and transmission piece (24) screw thread cover connects on second threaded rod (27) to the both sides of transmission piece (24) and the inside spacing sliding connection in both sides of installation frame (25).

3. A cold spray repair device for cracks of steel members according to claim 1, characterized in that: the first fixing plate (36) is connected with the second fixing plate (39) through two second electric telescopic rods (38), and the telescopic directions of the two second electric telescopic rods (38) are perpendicular to the spraying direction of the spray head (40).

4. A cold spray repair device for cracks of steel members according to claim 1, characterized in that: the first spraying pipe (18) is rotatably connected with the circle center through hole (15) through a bearing (30), four sliding blocks (22) distributed in an annular mode are fixedly connected to the outer side of the bottom of the second spraying pipe (21), a limiting sliding groove (20) matched with the four sliding blocks (22) is formed in the inner wall of the first spraying pipe (18), and the sliding blocks (22) are nested into the corresponding limiting sliding grooves (20) and are connected with the limiting sliding grooves in a sliding fit mode.

5. A cold spray repair device for steel member cracks according to claim 4, characterized in that: a cavity (16) is formed between the inner wall of the spraying container (12) and the outer side of the circle center through hole (15), a discharge port (14) communicated with the cavity (16) is formed in the outer side of the spraying container (12), a plurality of first through holes (17) communicated with the cavity (16) are formed in the inner wall of the circle center through hole (15), a plurality of second through holes (19) are formed in the inner wall of a first spraying pipe (18) located inside the spraying container (12), the second through holes (19) can be communicated with the cavity (16) through the first through holes (17), a mounting pipe fitting is communicated with the top end of the second spraying pipe (21), and the mounting pipe fitting is connected with an external high-speed air cooling mechanism.

6. A cold spray repair device for cracks of steel members according to claim 1, characterized in that: the top of base (1) is located locating component's both sides and installs support frame (5) along vertical direction, sliding connection has fixed frame (8) between two support frames (5), U-shaped board (10) fixed mounting is on fixed frame (8), the inside of every support frame (5) is provided with first threaded rod (7) along vertical direction, the top of first threaded rod (7) is rotated with the top of support frame (5) and is connected, the bottom of first threaded rod (7) is connected with the drive of first motor (6) of fixing in base (1) inside.

7. A cold spray repair device for steel member cracks according to claim 6, characterized in that: the positioning assembly comprises a placing table (2) fixed on the base (1), the top of the placing table (2) is fixedly connected with a conical block (3), and the axis of a motor shaft of a third motor (28) and the axis of the conical block (3) are positioned on the same vertical line.

8. A cold spray repairing process for steel member cracks, which is based on the cold spray repairing device for the steel member cracks as claimed in any one of claims 1 to 7, and is characterized in that the method comprises the following steps:

step one, horizontally mounting a workpiece (4) on a positioning component;

step two, adjusting the position of the spray head (40) to ensure that the spraying direction of the spray head (40) is vertical to the outer side of the workpiece (4): the whole spraying mechanism (9) moves along the vertical direction to adjust the height of the spray head (40); the electric driving transmission block (24) slides towards the motor shaft direction of the third motor (28) along the inner side of the mounting frame (25), so that the spraying container (12) rotates clockwise around the shaft rod (13), when the stretching directions of the first stretching pipe fitting (32), the second stretching pipe fitting (33) and the third stretching pipe fitting (34) are vertical to the outer side of the workpiece (4), the transmission block (24) is kept fixed, the first electric telescopic rod (37) is started to drive the first fixing plate (36) and the spray head (40) to move, and after the spray head (40) is located at the crack of the outer wall of the workpiece (4) and has a certain spraying distance, the first electric telescopic rod (37) is closed;

and thirdly, controlling the rotation speed and the rotation angle of a third motor (28) through a computer, driving a spray head (40) to rotate around the outer side of the workpiece (4) by the third motor (28), enabling the spray direction of the spray head (40) to be always vertical to the outer side of the workpiece (4) in the rotating process, enabling metal particles in the spraying container (12) to sequentially pass through a first spraying pipe (18), a first telescopic pipe fitting (32), a second telescopic pipe fitting (33), a third telescopic pipe fitting (34) and a connecting pipe (41) and then to be sprayed out of the spray head (40), and enabling the spray head (40) to carry out cold spraying along a crack path.

Images