Clamp for laser repair of fan blade

Abstract

The invention discloses a clamp for laser repair of a fan blade, and relates to the technical field of equipment repair and remanufacturing. The clamp comprises a rotating sleeve and a fan blade, a plurality of first fixing sleeves are evenly arranged on the surface of the rotating sleeve, and a triangular support is connected to one side of each first fixing sleeve. The side, close to the first fixing sleeve, of the triangular support is provided with a first connecting column, the first connecting column is clamped and fixed to the inner wall of the first fixing sleeve through a first elastic mechanism, and it is ensured that the clamp stably supports the curved surface of the blade in the repairing process. The head end fixing base and the tail end fixing base are installed on the triangular support and are arranged in a bilateral symmetry mode, and one-way inserting grooves are formed in the surfaces of the head end fixing base and the tail end fixing base to adapt to the curved surface structure of the fan blade for precise fixing. According to the device, the head end and the tail end of the blade are effectively supported, so that the position accuracy during laser cladding curved surface repairing is ensured, and the repairing accuracy and the overall repairing quality of a complex curved surface are further improved.

Description

Technical Field

[0001] The present invention relates to the field of equipment repair and remanufacturing, and in particular to a fixture for laser repair of fan blades. Background Art

[0002] As a key power supply equipment in the steel, petroleum, chemical and other industries, fans are widely used in these industrial fields. In particular, the moving blades on the rotor of axial flow fans are in a high temperature and high pressure environment for a long time, and are easily eroded by dust and corrosive media. For example, in steel enterprises, heavy metal dust and sand dust will cause serious erosion on the blade surface; in petrochemical enterprises, the corrosion of gases such as chlorine and sulfur will cause the surface material of the blade to gradually lose. These factors work together to gradually thin the curved area of ​​the fan blades at the root of the air inlet side and the top of the exhaust side, and even form a blade shape or notch. When these notches expand to a certain extent, the moving blades will find it difficult to withstand the huge shear force (more than 10 tons) applied during high-speed rotation, resulting in fatigue fracture. This will not only cause damage to the blades, but may also cause failure of the entire unit, forcing the company to replace the rotor and moving blades, which is costly and has a long maintenance cycle, seriously affecting the normal production of the company.

[0003] In order to extend the service life of wind turbine blades and reduce maintenance costs, laser cladding technology is widely used to repair damaged blades, especially their complex curved surface areas. Laser cladding technology adds cladding material to the surface of the substrate and uses a high-energy laser beam to melt it with the substrate surface to form a metallurgically bonded cladding layer. This method can significantly improve the wear resistance and corrosion resistance of the blade surface, especially the curved surface, while maintaining a high repair accuracy. However, the curved surface structure of the moving blade is complex, and the existing repair equipment cannot accurately control the vibration when processing at multiple angles and multiple positions, which will have an adverse effect on the repair accuracy.

[0004] In the prior art, although the patent with publication number CN215947408U proposes an improved aircraft engine part surface repair device, its clamp design can only fix the blade from one end, and the other end lacks sufficient support, which causes the blade to be easily displaced due to gravity or vibration during the repair process. Especially when repairing complex curved surfaces, it is difficult to ensure the repair accuracy. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the other end of the fan blade lacks sufficient support in the prior art, which causes the blade to be easily displaced due to gravity or vibration during the repair process, especially when repairing complex curved surfaces to ensure the repair accuracy. At the same time, the fan blade is prone to swing during the laser cladding repair process, making it difficult to ensure the quality of the repair. A fixture for laser repair of fan blades is provided to overcome the shortcomings of the prior art.

[0006] The present invention is achieved through the following technical solutions: The present invention provides a fixture for laser repair of fan blades, comprising a rotating sleeve and a fan blade, the surface of the rotating sleeve is evenly provided with a first fixed sleeve, and a triangular bracket is provided on one side of the first fixed sleeve, a first connecting column is provided on a side surface of the triangular bracket close to the first fixed sleeve, and one end of the first connecting column is slidably connected to the inner wall of the first fixed sleeve, the first connecting column is clamped and fixed to the inner wall of the first fixed sleeve by a first elastic mechanism, a head end fixing seat and a tail end fixing seat are respectively installed on the surface of the triangular bracket, and are arranged on the left and right, and a one-way slot is opened on the surface of the head end fixing seat and the tail end fixing seat, one end of the fan blade is located in the one-way slot on the surface of the head end fixing seat, and the other end is located in the one-way slot on the surface of the tail end fixing seat, and a head end limiting seat and a tail end limiting seat are respectively provided at the outer port of the one-way slot on the surface of the head end fixing seat and the outer port of the one-way slot on the surface of the tail end fixing seat.

[0007] Furthermore, a second fixed sleeve is symmetrically arranged on the surface of the triangular bracket, and two groups of the second fixed sleeves correspond to the positions of the head end fixed seat and the tail end fixed seat respectively. The inner walls of the two groups of the second fixed sleeves are slidably connected with second connecting columns, one ends of the two groups of the second connecting columns are slidably connected to the inner wall of the second fixed sleeve, and are clamped and fixed to the inner wall of the second fixed sleeve by a second elastic mechanism, and the other ends of the two groups of the second connecting columns are respectively connected to the surfaces of the head end fixed seat and the tail end fixed seat.

[0008] Furthermore, the one-way slot on the surface of the head end fixing seat is matched with the outer dimensions of the head end of the fan blade and has corresponding positions, and the one-way slot on the surface of the tail end fixing seat is matched with the outer dimensions of the tail end of the fan blade and has corresponding positions.

[0009] Furthermore, the head end limit seat and the tail end limit seat both include a fixed limit seat and a third elastic mechanism, one end of the fixed limit seat is slidably connected to the inner wall of the one-way slot and abuts against the surface of the fan blade, and the fixed limit seat is fixed to the inner wall of the one-way slot by the third elastic mechanism, the fixed limit seat in the head end limit seat is adapted to the outer dimensions of the one-way slot on the surface of the head end limit seat, and the fixed limit seat in the tail end limit seat is adapted to the outer dimensions of the one-way slot on the surface of the tail end limit seat.

[0010] Furthermore, the first elastic mechanism, the second elastic mechanism and the third elastic mechanism have the same structure, the first elastic mechanism includes a cylinder, a clamping rod and a spring, and the inner wall of the first fixed sleeve, the inner wall of the second fixed sleeve and the inner wall of the one-way slot are all provided with a clamping hole that is clamped and fixed with one end of the clamping rod.

[0011] Furthermore, a threaded screw and a guide rod are arranged above and below the surface of the tail end fixing seat, one end of the threaded screw is rotatably connected to the surface of the tail end fixing seat, and the other end is threadedly connected to the surface of the triangular bracket, one end of the guide rod is fixedly connected to the surface of the tail end fixing seat, and the other end is slidably connected to the surface of the triangular bracket.

[0012] The present invention has a reasonable structure and can operate reliably, effectively supports and fixes the head end and the tail end of the fan blade, ensures the position accuracy and repair quality of the fan blade during the laser cladding repair process, and has a good use effect.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The first fixing sleeve, the first connecting column and the first elastic mechanism cooperate with each other to facilitate the rapid disassembly and assembly of the tripod bracket, which is convenient to use; The second fixing sleeve, the second connecting column and the second elastic mechanism cooperate with each other to facilitate the rapid disassembly and assembly of the head end fixing seat and the tail end fixing seat and the steering adjustment; The one-way slot, the front end limit seat and the rear end limit seat are adapted to the outer dimensions of the front and rear ends of the fan blades, so that they can be directly inserted into the limit seat. The front end limit seat and the rear end limit seat are set to facilitate direct insertion into the one-way slot to fix the fan blades. The operation is simple and convenient for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the one-way slot structure in the present invention; Figure 3 is a schematic diagram of the structure of the first elastic mechanism in the present invention; Figure 4 It is a schematic diagram of the head end limiting seat structure in the present invention.

[0015] In the figure, 1, rotating sleeve; 2, first fixed sleeve; 100, fan blade; 3, triangular bracket; 4, first connecting column; 5, first elastic mechanism; 9, head end fixing seat; 10, tail end fixing seat; 11, one-way slot; 12, head end limit seat; 13, tail end limit seat; 6, second fixed sleeve; 7, second connecting column; 8, second elastic mechanism; 121, fixed limit seat; 122, third elastic mechanism; 51, column; 52, clamping rod; 53, spring; 14, threaded screw; 15, guide rod; 200, straight key; 1000, concentric column; 2000, horizontal frame; 3000, reference position of laser cladding head; 4000, gear disc. DETAILED DESCRIPTION

[0016] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Example

[0017] Reference Figures 1 to 4 , the present invention provides a fixture for laser repair of a fan blade, comprising a rotating sleeve 1 and a fan blade 100; The surface of the rotating sleeve 1 is evenly provided with a first fixed sleeve 2, one side of the first fixed sleeve 2 is provided with a triangular bracket 3, and the surface of the triangular bracket 3 on one side close to the first fixed sleeve 2 is provided with a first connecting column 4, one end of the first connecting column 4 is slidably connected to the inner wall of the first fixed sleeve 2, and the first connecting column 4 is clamped and fixed to the inner wall of the first fixed sleeve 2 through a first elastic mechanism 5; The surface of the triangular bracket 3 is respectively installed with a head end fixing seat 9 and a tail end fixing seat 10, and is arranged on the left and right sides. The surface of the head end fixing seat 9 and the tail end fixing seat 10 are both provided with a one-way slot 11; One end of the fan blade 100 is located in the one-way slot 11 on the surface of the head end fixing seat 9, and the other end is located in the one-way slot 11 on the surface of the tail end fixing seat 10. A head end limit seat 12 and a tail end limit seat 13 are respectively provided at the outer port of the one-way slot 11 on the surface of the head end fixing seat 9 and the outer port of the one-way slot 11 on the surface of the tail end fixing seat 10.

[0018] Furthermore: the rotating sleeve 1 is sleeved on the outside of the concentric column 1000 and is rotatably connected. A horizontal frame 2000 with a lifting mechanism is arranged on the top of the concentric column 1000. A linear drive module is arranged on the horizontal frame 2000 to drive the laser cladding head reference position 3000 to move horizontally. A toothed disc 4000 is arranged at the bottom of the rotating sleeve 1. The driving motor and the gear assembly cooperate with each other to drive the toothed disc 4000 to rotate, thereby realizing the synchronous rotation of the rotating sleeve 1.

[0019] Furthermore, the shape of the fan blade 100 can be a linear blade, a wing-shaped blade or a rotor-shaped blade.

[0020] Furthermore, the shapes of the head end fixing seat 9 , the one-way slot 11 on the surface of the head end fixing seat 9 , the tail end fixing seat 10 and the one-way slot 11 on the surface of the tail end fixing seat 10 can be adaptively changed according to the shape of the fan blade 100 .

[0021] Further: the surface of the triangular bracket 3 is symmetrically provided with a second fixed sleeve 6, and the two groups of second fixed sleeves 6 correspond to the positions of the head end fixing seat 9 and the tail end fixing seat 10 respectively, and the inner walls of the two groups of second fixed sleeves 6 are slidably connected with second connecting columns 7, one ends of the two groups of second connecting columns 7 are slidably connected to the inner wall of the second fixed sleeve 6, and are clamped and fixed to the inner wall of the second fixed sleeve 6 through a second elastic mechanism 8, and the other ends of the two groups of second connecting columns 7 are respectively connected to the surface of the head end fixing seat 9 and the tail end fixing seat 10.

[0022] Furthermore: the second fixed sleeve 6 is of detachable design, and the position and angle of the second fixed sleeve 6 on the surface of the triangular bracket 3 are adjustable. By adjusting the installation position of the second fixed sleeve 6, it can be adapted to the installation of blades of different shapes. By adjusting the angle of the second fixed sleeve 6, the placement angle of the fan blade 100 can be changed synchronously. By changing the placement angle of the fan blade 100, the surface of the fan blade 100 and the outer end face of the fan blade 100 can be processed.

[0023] Furthermore: the second connecting column 7 is of detachable design, and the position and angle of the second connecting column 7 on the surface of the head end fixing seat 9 and the tail end fixing seat 10 are adjustable, and the connection with the second fixing sleeve 6 is facilitated by adjusting the angle and position of the second connecting column 7.

[0024] Furthermore: the surface of the first connecting column 4 and the surface of the second connecting column 7 are both provided with a straight key 200, and the inner walls of the first fixed sleeve 2 and the second fixed sleeve 6 are both provided with a straight groove matching the straight key 200. The provision of the straight key 200 and the straight groove facilitates horizontal sliding and quick positioning.

[0025] Further: the second fixing sleeve 6, the second connecting column 7 and the second elastic mechanism 8 are provided to facilitate quick disassembly and assembly of the head end fixing seat 9 and the tail end fixing seat 10 as well as steering adjustment. ; Furthermore: the one-way slot 11 on the surface of the head end fixing seat 9 is adapted to the outer dimensions of the head end of the fan blade 100 and the positions are corresponding, and the one-way slot 11 on the surface of the tail end fixing seat 10 is adapted to the outer dimensions of the tail end of the fan blade 100 and the positions are corresponding.

[0026] Further: the one-way slot 11 is limited; Further: the head end limit seat 12 and the tail end limit seat 13 both include the fixed limit seat 121 and the third elastic mechanism 122, one end of the fixed limit seat 121 is slidably connected to the inner wall of the one-way slot 11 and abuts against the surface of the fan blade 100, the fixed limit seat 121 is clamped and fixed to the inner wall of the one-way slot 11 through the third elastic mechanism 122, the fixed limit seat 121 in the head end limit seat 12 is adapted to the outer dimensions of the one-way slot 11 on the surface of the head end limit seat 12, and the fixed limit seat 121 in the tail end limit seat 13 is adapted to the outer dimensions of the one-way slot 11 on the surface of the tail end limit seat 13.

[0027] Further: the first elastic mechanism 5, the second elastic mechanism 8 and the third elastic mechanism 122 have the same structure, the first elastic mechanism 5 includes a cylinder 51, a clamping rod 52 and a spring 53, and the inner wall of the first fixed sleeve 2, the inner wall of the second fixed sleeve 6 and the inner wall of the one-way slot 11 are all provided with a clamping hole that is clamped and fixed with one end of the clamping rod 52.

[0028] Further: the surface of the tail end fixing seat 10 is provided with a threaded screw 14 and a guide rod 15 above and below, one end of the threaded screw 14 is rotatably connected to the surface of the tail end fixing seat 10, and the other end is threadedly connected to the surface of the triangular bracket 3, one end of the guide rod 15 is fixedly connected to the surface of the tail end fixing seat 10, and the other end is slidably connected to the surface of the triangular bracket 3, Furthermore: the surface of the guide rod 15 is provided with scale lines.

[0029] Furthermore, the threaded screw 14 is provided to facilitate the adjustment of the position of the tail end fixing seat 10 , and the displacement data can be directly obtained through the scale lines on the surface of the guide rod 15 .

[0030] Working principle: When in use, the head end and the tail end of the fan blade 100 are respectively inserted into the one-way slot 11 on the surface of the head end fixing seat 9 and the surface of the tail end fixing seat 10, and are aligned on one side. This setting can ensure the position accuracy of the fan blade 100 and effectively support the fan blade 100, with good use effect. After the insertion is completed, one end of the head end limit seat 12 and one end of the tail end limit seat 13 are respectively inserted into the one-way slot 11 from the outer port of the one-way slot 11. When one end of the head end limit seat 12 and one end of the tail end limit seat 13 abut against the surface of the fan blade 100, the third elastic mechanism 122 is fixedly engaged with the card hole on the inner wall of the one-way slot 11, thereby limiting the position of the fan blade 100, and then the first connecting column 4 is inserted into the first fixed sleeve 2 until the first elastic mechanism 5 is fixed with the card hole on the first fixed sleeve 2.

[0031] The above description of the embodiments in this specification enables professionals and technicians in this field to implement or use the present invention. Various modifications to these embodiments will be apparent to professionals and technicians in this field, and the general principles defined in this specification can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A fixture for laser repair of a fan blade, comprising a rotating sleeve (1) and a fan blade (100); The surface of the rotating sleeve (1) is evenly provided with a first fixed sleeve (2), and a triangular bracket (3) is provided on one side of the first fixed sleeve (2). A first connecting column (4) is provided on the surface of the triangular bracket (3) on one side close to the first fixed sleeve (2), and one end of the first connecting column (4) is slidably connected to the inner wall of the first fixed sleeve (2). The first connecting column (4) is fixed to the inner wall of the first fixed sleeve (2) by a first elastic mechanism (5). A head end fixing seat (9) and a tail end fixing seat (10) are respectively installed on the surface of the triangular bracket (3) and are arranged on the left and right. A one-way slot (11) is provided on the surface of the head end fixing seat (9) and the tail end fixing seat (10); One end of the fan blade (100) is located in a one-way slot (11) on the surface of the head end fixing seat (9), and the other end is located in a one-way slot (11) on the surface of the tail end fixing seat (10). A head end limit seat (12) and a tail end limit seat (13) are respectively provided at the outer port of the one-way slot (11) on the surface of the head end fixing seat (9) and the outer port of the one-way slot (11) on the surface of the tail end fixing seat (10).

2. The fixture for laser repair of fan blades according to claim 1 is characterized in that The surface of the triangular bracket (3) is symmetrically provided with a second fixing sleeve (6), and the two groups of the second fixing sleeve (6) correspond to the positions of the head end fixing seat (9) and the tail end fixing seat (10) respectively. The inner walls of the two groups of the second fixing sleeves (6) are slidably connected with a second connecting column (7), one end of the two groups of the second connecting column (7) is slidably connected to the inner wall of the second fixing sleeve (6), and is clamped and fixed to the inner wall of the second fixing sleeve (6) through a second elastic mechanism (8), and the other ends of the two groups of the second connecting column (7) are respectively connected to the surface of the head end fixing seat (9) and the tail end fixing seat (10).

3. The fixture for laser repair of fan blades according to claim 1 is characterized in that The one-way slot (11) on the surface of the head end fixing seat (9) is compatible with the external dimensions of the head end of the fan blade (100) and has a corresponding position, and the one-way slot (11) on the surface of the tail end fixing seat (10) is compatible with the external dimensions of the tail end of the fan blade (100) and has a corresponding position.

4. The fixture for laser repair of fan blades according to claim 1 is characterized in that The head end limit seat (12) and the tail end limit seat (13) both comprise a fixed limit seat (121) and a third elastic mechanism (122); one end of the fixed limit seat (121) is slidably connected to the inner wall of the one-way slot (11) and abuts against the surface of the fan blade (100); the fixed limit seat (121) is clamped and fixed to the inner wall of the one-way slot (11) via the third elastic mechanism (122); the fixed limit seat (121) in the head end limit seat (12) is compatible with the outer dimensions of the one-way slot (11) on the surface of the head end limit seat (12); and the fixed limit seat (121) in the tail end limit seat (13) is compatible with the outer dimensions of the one-way slot (11) on the surface of the tail end limit seat (13).

5. The fixture for laser repair of fan blades according to claim 4 is characterized in that The first elastic mechanism (5), the second elastic mechanism (8) and the third elastic mechanism (122) have the same structure. The first elastic mechanism (5) comprises a column (51), a clamping rod (52) and a spring (53). The inner wall of the first fixed sleeve (2), the inner wall of the second fixed sleeve (6) and the inner wall of the one-way slot (11) are all provided with a clamping hole for clamping and fixing one end of the clamping rod (52).

6. The fixture for laser repair of fan blades according to claim 1 is characterized in that A threaded screw (14) and a guide rod (15) are arranged above and below the surface of the tail end fixing seat (10); one end of the threaded screw (14) is rotatably connected to the surface of the tail end fixing seat (10), and the other end is threadedly connected to the surface of the triangular bracket (3); one end of the guide rod (15) is fixedly connected to the surface of the tail end fixing seat (10), and the other end is slidably connected to the surface of the triangular bracket (3).

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