A locomotive wind horn cover assembly tooling and assembly method

Abstract

This application discloses a locomotive wind horn cover assembly fixture and method, relating to the field of wind horn cover installation technology. The locomotive wind horn cover assembly fixture includes a first fixture and a second fixture. The first fixture has a first positioning hole and a first detection surface adapted to the curvature of the driver's cab front at the wind horn cover mounting hole. The second fixture has a second detection surface for contacting the first detection surface, a second positioning hole corresponding to the first positioning hole, and a second fixture hole for inserting the wind horn cover body. By providing the first and second fixtures, this application assists workers in welding and installing the wind horn cover mounting base and the wind horn cover. After welding the wind horn cover mounting base to the wall of the wind horn cover mounting hole, it still ensures that the first bolt hole on the wind horn cover mounting base aligns with the second bolt hole on the wind horn cover, ensuring smooth installation of the wind horn cover.

Description

Technical Field

[0001] This application relates to the field of wind horn cover installation technology, specifically to a locomotive wind horn cover assembly tooling and assembly method. Background Technology

[0002] A locomotive has a streamlined driver's cab design. The lower part of the front of the driver's cab has a wind horn cover mounting hole. A wind horn cover mounting seat is welded into the wind horn cover mounting seat, and a wind horn cover covering the wind horn cover hole is connected to the wind horn cover mounting seat by bolts.

[0003] Both the wind horn cover mounting base and the wind horn cover are welded from steel. The assembly process is as follows: first, the wind horn cover mounting base is welded into the wind horn cover mounting hole opened at the lower part of the front of the driver's cab; then, the wind horn cover is placed over the wind horn cover mounting hole and the wind horn cover and the wind horn cover mounting base are fixedly connected by bolts.

[0004] However, after the wind horn cover mounting bracket is welded into the wind horn cover mounting hole, during the assembly of the wind horn cover, the bolt holes on the wind horn cover and the bolt holes on the wind horn cover mounting bracket often cannot be aligned, causing the wind horn cover to be unable to be installed properly; even after the wind horn cover is assembled, there is often a problem that the gap between the edge of the wind horn cover and the hole wall of the wind horn cover mounting hole is large and uneven, which seriously affects the appearance quality of the locomotive. Summary of the Invention

[0005] The purpose of this application is to provide a locomotive wind horn cover assembly tooling and assembly method to solve the problem that the bolt holes on the wind horn cover cannot be aligned with the bolt holes on the wind horn cover mounting base during assembly.

[0006] The technical solution adopted by this application to solve its technical problem is: a locomotive wind horn cover assembly fixture, including a first fixture and a second fixture; the first fixture is provided with a first positioning hole and a first detection surface adapted to the curvature of the driver's cab front face at the wind horn cover mounting hole; the second fixture is provided with a second detection surface for fitting with the first detection surface, a second positioning hole corresponding one-to-one with the first positioning hole, and a second fixture hole for inserting the wind horn cover body.

[0007] Furthermore, the first tooling includes a first tooling plate and a first insertion part, one surface of the first tooling plate forms the first detection surface, the first insertion part is connected to the first detection surface, and the first positioning hole is disposed on the first insertion part.

[0008] Furthermore, the first tooling plate is provided with a first tooling hole.

[0009] Furthermore, the first insertion part includes a first plate connected to the first tooling plate and arranged around the first tooling hole in the circumference, a first positioning plate is fixed at the end of the first plate away from the first tooling plate, and the first positioning hole is arranged on the first positioning plate.

[0010] Furthermore, a first stiffening plate connects the first plate to the first tooling plate.

[0011] Furthermore, the second tooling includes a second tooling plate having a second tooling hole, one surface of the second tooling plate forming the second detection surface, a second positioning plate being provided on the side of the second tooling plate opposite to the second detection surface, the second positioning plate being connected to the second tooling plate, and the second positioning hole being provided on the second positioning plate.

[0012] Furthermore, the second positioning plate is connected to the second tooling plate via a connector.

[0013] Furthermore, the connector includes a second plate arranged circumferentially along the second tooling hole, one end of the second plate being connected to the second tooling plate, and the other end of the second plate being connected to the second positioning plate.

[0014] Furthermore, a second stiffening plate connects the second plate to the second tooling plate.

[0015] A method for assembling a locomotive wind horn cover includes:

[0016] Provide the aforementioned locomotive wind horn cover assembly tooling;

[0017] On the first inspection side of the first tooling, the side plate and the seat plate are assembled. The positioning bolts are passed through the first positioning hole on the first tooling and the first bolt hole on the seat plate and tightened. Then the side plate and the seat plate are welded together to form a wind horn cover mounting base.

[0018] Insert the wind horn cover mounting bracket into the wind horn cover mounting hole, adjust the position of the wind horn cover mounting bracket, weld the side plate to the wall of the wind horn cover mounting hole, and remove the first tooling after welding.

[0019] On the second inspection side of the second tooling, assemble the frame, grating plate, mounting plate and skin, pass the positioning bolts through the second positioning hole on the second tooling and the second bolt hole on the mounting plate and tighten them, at the same time attach the skin to the second inspection surface, and then weld the frame, grating plate, mounting plate and skin together to form a wind horn cover;

[0020] Remove the second tooling and install the wind horn cover.

[0021] The beneficial effects of this application are:

[0022] The locomotive wind horn cover assembly fixture and assembly method provided in this application embodiment, by setting a first fixture and a second fixture, are used to assist workers in assembling and installing the wind horn cover mounting base and the wind horn cover. After the wind horn cover mounting base is welded to the wall of the wind horn cover mounting hole, it can still ensure that the first bolt hole on the wind horn cover mounting base is aligned with the second bolt hole on the wind horn cover, ensuring that the wind horn cover is installed smoothly. At the same time, it can also ensure that the gap between the edge of the wind horn cover and the wall of the wind horn cover mounting hole is uniform, thereby improving the appearance quality of the locomotive. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the wind horn cover installed on the front of the driver's cab;

[0025] Figure 2 yes Figure 1 A sectional view along line AA.

[0026] Figure 3 This is a structural schematic diagram of the wind turbine cover mounting bracket;

[0027] Figure 4 yes Figure 3 Sectional view along the BB line;

[0028] Figure 5 This is a schematic diagram of the structure of the wind turbine cover;

[0029] Figure 6 yes Figure 5 A cross-sectional view along the CC line;

[0030] Figure 7 This is a schematic diagram of the structure of the first tooling provided in the embodiments of this application;

[0031] Figure 8 yes Figure 7 A-direction view;

[0032] Figure 9 This is a schematic diagram of the structure of the second tooling provided in the embodiments of this application;

[0033] Figure 10 yes Figure 9 View from direction B in the middle.

[0034] Figure label:

[0035] 1-Front of the driver's cab;

[0036] 11-Host hole for wind horn cover;

[0037] 2-Wind horn cover mounting bracket;

[0038] 21-Edge plate;

[0039] 22-Seat plate;

[0040] 221 - First bolt hole;

[0041] 3-Wind horn cover;

[0042] 31-The main body of the wind turbine cover;

[0043] 311-Frame; 312-Grating plate; 313-Mounting plate; 314-Second bolt hole;

[0044] 32-Skin;

[0045] 4-First tooling;

[0046] 41-First tooling plate;

[0047] 411 - First inspection surface; 412 - First tooling hole;

[0048] 42-First insertion part;

[0049] 421 - First plate; 422 - First positioning plate; 423 - First positioning hole; 424 - First stiffening plate;

[0050] 5-Second tooling;

[0051] 51-Second tooling plate;

[0052] 511 - Second tooling hole; 512 - Second inspection surface;

[0053] 52 - Second positioning plate;

[0054] 521 - Second positioning hole;

[0055] 53 - Second board;

[0056] 54 - Second stiffener. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0058] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the embodiments and features described in these embodiments can be combined with each other unless otherwise specified.

[0059] In the description of the embodiments of this application, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this application is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. The terms "set", "open", "installed", "connected", and "connected" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, and integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0060] See Figure 1 , Figure 2 A locomotive has a streamlined driver's cab design. The lower part of the front face 1 of the driver's cab has a wind horn cover mounting hole 11. A wind horn cover mounting seat 2 is welded into the wind horn cover mounting hole 11. A wind horn cover 3 covering the wind horn cover mounting hole 11 is connected to the wind horn cover mounting seat 2 by bolts or screws.

[0061] Figure 3 , Figure 4 The structure of the wind horn cover mounting bracket 2 is shown in the figure. See also Figure 3 , Figure 4 The wind horn cover mounting base 2 includes a side plate 21 and a base plate 22. The end of the side plate 21 is connected to form a cylindrical structure. The shape of the cylindrical structure is adapted to the shape of the wind horn cover mounting hole 11. The size of the cylindrical structure is slightly smaller than the size of the wind horn cover mounting hole 11 so that the cylindrical structure formed by the side plate 21 can be easily inserted into the wind horn cover mounting hole 11. Four base plates 22 are provided inside the cylindrical structure. The base plates 22 are welded to the first end of the cylindrical structure. Each base plate 22 is provided with a first bolt hole 221. The installation process of the wind horn cover mounting base 2 is as follows: insert the wind horn cover mounting base 2 into the wind horn cover mounting hole 11, and weld the second end of the cylindrical structure formed by the side plate 21 to the hole wall of the wind horn cover mounting hole 11.

[0062] Figure 5 , Figure 6 The structure of the wind horn cover 3 is shown in the figure. See also Figure 5 , Figure 6The wind horn cover 3 includes a wind horn cover body 31 and a skin 32 welded to the edge of the wind horn cover body 31. The curvature of the skin 32 matches the curvature of the driver's cab front around the wind horn cover mounting hole 11. The shape of the skin 32 is adapted to the shape of the wind horn cover mounting hole 11. The external dimensions of the skin 32 are slightly smaller than the dimensions of the wind horn cover mounting hole 11 so that the skin 32 can be easily inserted into the wind horn cover mounting hole 11. The wind horn cover body 31 includes a frame 311 welded circumferentially to the edge of the inner hole of the skin 32. Multiple grille plates 312 are welded at intervals inside the frame 311. Four mounting plates 313 are also welded inside the frame 311. Each mounting plate 313 is provided with a second bolt hole 314. The four second bolt holes 314 on the wind horn cover 3 correspond one-to-one with the four first bolt holes 221 on the wind horn cover mounting seat 2. The installation process of the wind horn cover 3 is as follows: insert the wind horn cover body 31 into the side plate 21 of the wind horn cover mounting base 2, the skin 32 abuts against one end of the side plate 21, and tighten it by passing bolts or screws through the second bolt hole 314 and the first bolt hole 221.

[0063] Since both the wind horn cover mounting base 2 and the wind horn cover 3 are welded from steel, when the wind horn cover mounting base 2 is welded into the wind horn cover mounting hole 11, the bolt holes on the wind horn cover 3 and the bolt holes on the wind horn cover mounting base 2 often cannot be aligned, causing the wind horn cover 3 to be unable to be installed properly. Even after the wind horn cover 3 is assembled, the gap between the edge of the wind horn cover 3 and the hole wall of the wind horn cover mounting hole 11 is often large and uneven, which seriously affects the appearance quality of the locomotive.

[0064] To solve the above problem, see Figure 7 , Figure 8 , Figure 9 , Figure 10 The present application provides a locomotive wind horn cover assembly fixture, including a first fixture 4 and a second fixture 5; the first fixture 4 is provided with a first positioning hole 423 and a first detection surface 411 for adapting to the curvature of the driver's cab front face 1 at the wind horn cover mounting hole 11; the second fixture 5 is provided with a second detection surface 512 for fitting with the first detection surface 411, a second positioning hole 521 for corresponding one-to-one with the first positioning hole 423 and a second fixture hole 511 for inserting the wind horn cover body 31.

[0065] See Figure 7 , Figure 8The first tooling 4 is used to precisely position the first bolt hole 221 during the welding process of the wind horn cover mounting base 2. The first tooling 4 is provided with a first detection surface 411 and a first positioning hole 423; the curvature of the first detection surface 411 is consistent with the curvature of the driver's cab front face 1 at the wind horn cover mounting hole 11, so that the first detection surface 411 can be completely fitted with the driver's cab front face 1 at the wind horn cover mounting hole 11; the number and position of the first positioning holes 423 should be set according to the number and position of the first bolt holes 221 on the design drawing of the wind horn cover mounting base 2; for example, when there are four first bolt holes 221, there are four first positioning holes 423, and the four first positioning holes 423 correspond one-to-one with the four first bolt holes 221.

[0066] See Figure 9 , Figure 10 The second tooling 5 is used to accurately position the second bolt hole 314 during the welding process of the wind horn cover 3. The second tooling 5 is provided with a second detection surface 512, a second positioning hole 521, and a second tooling hole 511. The curvature of the second detection surface 512 is consistent with the curvature of the first detection surface 411, so that the second detection surface 512 and the first detection surface 411 can be completely fitted together, and the skin 32 can be completely fitted onto the second detection surface 512 when welding the wind horn cover 3. The number and position of the second positioning holes 521 should be set according to the number and position of the first positioning holes 423 on the first tooling 4. For example, when there are four first positioning holes 423, there are four second positioning holes 521, and when the second detection surface 512 is fitted onto the first detection surface 411, the four second positioning holes 521 correspond one-to-one with the four first positioning holes 423. The shape of the second tooling hole 511 is adapted to the shape of the wind horn cover body 31, and the size of the second tooling hole 511 is slightly larger than the external size of the wind horn cover body 31, so that the wind horn cover body 31 can be easily inserted into the second tooling hole 511.

[0067] This application provides a method for assembling a locomotive wind horn cover, including:

[0068] S1. Provides a locomotive wind horn cover assembly fixture according to the above embodiments.

[0069] The locomotive wind horn cover assembly fixture mainly includes the first fixture 4 and the second fixture 5. The first fixture 4 and the second fixture 5 are manufactured according to the design drawings and are ready for use after passing inspection.

[0070] S2. On the first inspection side of the first tooling 4, assemble the side plate 21 and the seat plate 22, pass the positioning bolt through the first positioning hole 423 on the first tooling 4 and the first bolt hole 221 on the seat plate 22 and tighten it, then weld the side plate 21 and the seat plate 22 together to form the wind horn cover mounting seat 2.

[0071] The side plate 21 and the base plate 22 are processed. The side plate 21 is connected end to end to form a cylindrical structure. The base plate 22 has a first bolt hole 221. The side plate 21 and the base plate 22 are assembled on the first inspection surface side of the first tooling 4. The positioning bolts are passed through the first positioning hole 423 and the first bolt hole 221 and tightened. This not only connects the base plate 22 to the first tooling 4, but also positions the first bolt hole 221. Then the side plate 21 and the base plate 22 are welded together to form the wind horn cover mounting seat 2. This can prevent the base plate 22 from shifting due to welding deformation during the welding process and ensure the accuracy of the position of the first bolt hole 221 on the wind horn cover mounting seat 2.

[0072] S3. Insert the wind horn cover mounting base 2 into the wind horn cover mounting hole 11, adjust the position of the wind horn cover mounting base 2, and weld the side plate 21 to the hole wall of the wind horn cover mounting hole 11. After welding, remove the first tooling 4.

[0073] Specifically, the side plate 21 is inserted into the wind horn cover mounting hole 11. First, the insertion depth is adjusted, then the gap between the side plate 21 and the hole wall of the wind horn cover mounting hole 11 is adjusted. After adjustment, the side plate 21 is welded to the hole wall of the wind horn cover mounting hole 11. Throughout the welding process, since the wind horn cover mounting base 2 and the first tooling 4 are always tightened by positioning bolts, welding deformation that could cause the base plate 22 to shift is prevented, further ensuring the accuracy of the position of the first bolt hole 221 on the wind horn cover mounting base 2. After welding is completed, the first tooling 4 is removed, completing the installation of the wind horn cover mounting base 2.

[0074] S4. On the second inspection surface side of the second tooling 5, assemble the frame 311, grid plate 312, mounting plate 313 and skin 32, pass the positioning bolts through the second positioning hole 521 on the second tooling 5 and the second bolt hole 314 on the mounting plate 313 and tighten them, at the same time attach the skin 32 to the second inspection surface 512, and then weld the frame 311, grid plate 312, mounting plate 313 and skin 32 together to form the wind horn cover 3;

[0075] After processing the frame 311, grating plate 312, mounting plate 313, and skin 32, assemble them on the second inspection surface of the second fixture 5. The skin 32 fits against the second inspection surface 512. The frame 311, grating plate 312, and mounting plate 313 are located in the hole 511 of the second fixture. Use positioning bolts to pass through the second bolt hole 314 and the second positioning hole 521 and tighten them. This not only connects the mounting plate 313 to the second fixture 5, but also positions the second bolt hole 314. Then, weld the frame 311, grating plate 312, mounting plate 313, and skin 32 together to form the wind horn cover 3. This prevents the mounting plate 313 from shifting due to welding deformation during the welding process and ensures the accuracy of the hole position of the second bolt hole 314 on the wind horn cover 3.

[0076] S5. Remove the second tooling 5 and install the wind horn cover 3.

[0077] After the wind horn cover 3 is welded together, remove the second tooling 5, then place the wind horn cover 3 over the wind horn cover mounting hole 11 and connect it to the wind horn cover mounting base 2 with bolts or screws to complete the installation of the wind horn cover 3.

[0078] The locomotive wind horn cover assembly fixture and assembly method provided in this application embodiment, by setting a first fixture 4 and a second fixture 5, are used to assist workers in assembling and installing the wind horn cover mounting base 2 and the wind horn cover 3. After the wind horn cover mounting base 2 is welded to the hole wall of the wind horn cover mounting hole 11, it can still ensure that the first bolt hole 221 on the wind horn cover mounting base 2 is aligned with the second bolt hole 314 on the wind horn cover 3, ensuring that the wind horn cover 3 is installed smoothly. At the same time, it can also ensure that the gap between the edge of the wind horn cover 3 and the hole wall of the wind horn cover mounting hole 11 is uniform, thereby improving the appearance quality of the locomotive.

[0079] In some embodiments, see Figure 7 , Figure 8 The first tooling 4 includes a first tooling plate 41 and a first insertion part 42. One surface of the first tooling plate 41 forms a first detection surface 411. The first insertion part 42 is connected to the first detection surface 411. A first positioning hole 423 is provided on the first insertion part 42.

[0080] The first tooling 4 can be used to simulate the wind horn cover 3 to assist workers in assembling and installing the wind horn cover mounting base 2. Exemplarily, the first tooling 4 includes a first tooling plate 41 for simulating the skin 32 and a first insertion portion 42 for simulating the wind horn cover body 31. One surface of the first tooling plate 41 forms a first detection surface 411 for simulating the surface of the skin 32; the shape of the first tooling plate 41 is adapted to the shape of the wind horn cover mounting hole 11, and the external dimensions of the first tooling plate 41 may be slightly larger than the size of the wind horn cover mounting hole 11 so that the first detection surface 411 can fit against the driver's cab front face 1 around the wind horn cover mounting hole 11 during installation, thereby limiting the insertion depth of the wind horn cover mounting base 2. In other embodiments, the external dimensions of the first tooling plate 41 may also be equal to or slightly smaller than the size of the wind horn cover mounting hole 11. The first insertion portion 42 is provided with a first positioning hole 423 for simulating the second bolt hole 314.

[0081] In some embodiments, see Figure 7 The first tooling plate 41 has a first tooling hole 412. The first insertion part 42 includes a first plate 421 connected to the first tooling plate 41 and arranged circumferentially along the first tooling hole 412. A first positioning plate 422 is fixed to one end of the first plate 421 away from the first tooling plate 41, and a first positioning hole 423 is provided on the first positioning plate 422. The first tooling hole 412 can be used as an inspection hole to observe and inspect the welding and installation process of the wind horn cover mounting base 2. The first plate 421 is used to simulate the frame 311; the first positioning plate 422 is used to simulate the mounting plate 313.

[0082] To improve the connection strength between the first plate 421 and the first tooling plate 41, and thus extend the service life of the first tooling 4, see [reference needed]. Figure 7 A first stiffener 424 connects the first plate 421 and the first tooling plate 41. There can be multiple first stiffeners 424, which are arranged around the circumference of the first tooling plate 41.

[0083] In some embodiments, see Figure 9 , Figure 10 The second tooling 5 includes a second tooling plate 51 with a second tooling hole 511. One surface of the second tooling plate 51 forms a second detection surface 512. A second positioning plate 52 is provided on the side of the second tooling plate 51 opposite to the second detection surface 512. The second positioning plate 52 is connected to the second tooling plate 51, and a second positioning hole 521 is provided on the second positioning plate 52. The second positioning plate 52 is connected to the second tooling plate 51 by a connector. The connector includes a second plate 53 arranged circumferentially along the second tooling hole 511. One end of the second plate 53 is connected to the second tooling plate 51, and the other end of the second plate 53 is connected to the second positioning plate 52.

[0084] The second tooling 5 can be used to simulate the driver's cab front fascia 1 and the wind horn cover mounting base 2, to assist workers in assembling and installing the wind horn cover 3. For example, the second tooling 5 includes a second tooling plate 51 for simulating the driver's cab front fascia 1, a second plate 53 for simulating the side plate 21, and a second positioning plate 52 for simulating the seat plate 22. The second tooling hole 511 on the second tooling plate 51 simulates the wind horn cover mounting hole 11; the second positioning hole 521 on the second positioning plate 52 simulates the first bolt hole 221.

[0085] To improve the connection strength between the second plate 53 and the second tooling plate 51, and thus extend the service life of the second tooling 5, see [reference needed]. Figure 9 A second stiffening plate 54 connects the second plate 53 and the second tooling plate 51. There can be multiple second stiffening plates 54, which are arranged along the circumference of the second tooling plate 51.

[0086] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments based on the technical essence of this application and within the spirit and principles of this application shall still fall within the protection scope of the technical solution of this application.

Claims

1. A locomotive wind horn cover assembly fixture, characterized in that, Including the first tooling (4) and the second tooling (5); The first tooling (4) is provided with a first positioning hole (423) and a first detection surface (411) for matching the curvature of the driver's cab front face (1) at the wind horn cover mounting hole (11). The second tooling (5) is provided with a second detection surface (512) for fitting with the first detection surface (411), a second positioning hole (521) for corresponding one-to-one with the first positioning hole (423), and a second tooling hole (511) for inserting the air supply horn cover body (31). The first tooling (4) includes a first tooling plate (41) and a first insertion part (42). One surface of the first tooling plate (41) forms the first detection surface (411). The first insertion part (42) is connected to the first detection surface (411). The first positioning hole (423) is disposed on the first insertion part (42). The first tooling plate (41) is provided with a first tooling hole (412); The first insertion part (42) includes a first plate (421) connected to the first tooling plate (41) and arranged around the first tooling hole (412). A first positioning plate (422) is fixed at one end of the first plate (421) away from the first tooling plate (41), and the first positioning hole (423) is arranged on the first positioning plate (422). A first stiffener plate (424) is connected between the first plate (421) and the first tooling plate (41).

2. The locomotive wind horn cover assembly fixture according to claim 1, characterized in that, The second tooling (5) includes a second tooling plate (51) with a second tooling hole (511), one surface of the second tooling plate (51) forms the second detection surface (512), a second positioning plate (52) is provided on the side of the second tooling plate (51) away from the second detection surface (512), the second positioning plate (52) is connected to the second tooling plate (51), and the second positioning hole (521) is provided on the second positioning plate (52).

3. The locomotive wind horn cover assembly fixture according to claim 2, characterized in that, The second positioning plate (52) is connected to the second tooling plate (51) via a connector.

4. The locomotive wind horn cover assembly fixture according to claim 3, characterized in that, The connector includes a second plate (53) arranged circumferentially along the second tooling hole (511), one end of the second plate (53) being connected to the second tooling plate (51), and the other end of the second plate (53) being connected to the second positioning plate (52).

5. The locomotive wind horn cover assembly fixture according to claim 4, characterized in that, A second stiffening plate (54) is connected between the second plate (53) and the second tooling plate (51).

6. A method for assembling a locomotive wind horn cover, characterized in that, include: Provides a locomotive wind horn cover assembly fixture as described in any one of claims 1 to 5; On the first inspection side of the first tooling (4), the side plate (21) and the seat plate (22) are assembled. The positioning bolts are passed through the first positioning hole (423) on the first tooling (4) and the first bolt hole (221) on the seat plate (22) and tightened. Then the side plate (21) and the seat plate (22) are welded together to form the wind horn cover mounting seat (2). Insert the wind horn cover mounting base (2) into the wind horn cover mounting hole (11), adjust the position of the wind horn cover mounting base (2), weld the side plate (21) to the hole wall of the wind horn cover mounting hole (11), and remove the first tooling (4) after welding. On the second inspection side of the second tooling (5), assemble the frame (311), grating plate (312), mounting plate (313) and skin (32), pass the positioning bolts through the second positioning hole (521) on the second tooling (5) and the second bolt hole (314) on the mounting plate (313) and tighten them, while attaching the skin (32) to the second inspection surface (512), and then weld the frame (311), grating plate (312), mounting plate (313) and skin (32) together to form the wind horn cover (3); Remove the second tooling (5) and install the wind horn cover (3).

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