Auxiliary Machine Pre-assembly Tooling for Diesel Locomotive

Abstract

This application provides a pre-assembly tooling for auxiliary machines of diesel locomotives. The pre-assembly tooling for auxiliary machines of diesel locomotives provided by this application includes a base and two floating shafts. The two floating shafts are coaxially arranged on the base, and the two gearboxes of the auxiliary machines of the diesel locomotive respectively abut against the opposite ends of the two floating shafts. The two floating shafts can respectively move axially relative to the base to adjust the distance between the two gearboxes. The pre-assembly tooling for auxiliary machines of diesel locomotives provided by this application can save the maintenance and assembly cycle of diesel locomotives and improve efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of diesel locomotives, and in particular to a pre-assembly tool for auxiliary machinery of a diesel locomotive. Background Art

[0002] The power system of a diesel locomotive typically includes a main engine and auxiliary engines. The main engine is usually a diesel engine, while the auxiliary engines typically include a gearbox, exciter motor, starter motor, and ventilator. The gearbox in the auxiliary engines needs to be connected to the main engine so that the main engine can transmit power to the auxiliary engines. The main engine of a diesel locomotive requires regular maintenance, which requires the disassembly and installation of the auxiliary engines. The assembly accuracy of the auxiliary engines affects the reliability of the diesel locomotive and the service life of the drive shaft. Inaccurate installation can cause locomotive vibration.

[0003] In the prior art, when assembling the main engine and auxiliary engine after maintenance, the main engine is usually used as the installation basis. Specifically, the maintenance work of the main engine is completed first, and then the gearbox is installed based on the main engine. The gearbox of the auxiliary engine usually includes a front gearbox and a rear gearbox. The drive shaft and universal joint of the main engine are respectively connected to the front gearbox and the rear gearbox. Thereafter, the installation of components such as the excitation motor, the starter motor and the ventilator is completed based on the gearbox, so that after the main engine is running, it can drive the auxiliary engine and drive the diesel locomotive to run.

[0004] However, the assembly of various components of the existing auxiliary machine must wait until the main machine is overhauled before it can be carried out, resulting in an excessively long overall overhaul and assembly cycle. Summary of the Invention

[0005] The present application provides a pre-assembly tool for auxiliary machinery of a diesel locomotive, which can independently complete the assembly of the auxiliary machinery during the maintenance of the main machinery, thereby shortening the maintenance and assembly cycle of the diesel locomotive.

[0006] The present application provides a pre-assembly tool for an auxiliary machine of a diesel locomotive. The pre-assembly tool for an auxiliary machine of a diesel locomotive comprises a base and two floating shafts, wherein the two floating shafts are coaxially arranged on the base.

[0007] The ends of the two movable shafts facing away from each other are respectively connected to the two gearboxes in the auxiliary machine of the internal combustion locomotive. The two movable shafts can respectively move axially relative to the base to adjust the distance between the two gearboxes.

[0008] The diesel locomotive auxiliary machine pre-assembly tooling provided in the present application does not need to use the main engine of the internal combustion engine as a reference when assembling the internal combustion engine auxiliary machine, that is, the auxiliary machine can be assembled independently when the main engine is being repaired. Specifically, the distance between the two gearboxes is located by pulling the floating shaft, and after the installation of the two gearboxes is completed, the starting motor, excitation motor and ventilator are installed based on it, thereby saving the maintenance and assembly cycle of the diesel locomotive and improving efficiency.

[0009] As an alternative implementation, in the auxiliary machine pre-assembly tooling for diesel locomotives provided in the present application, both floating shafts include a shaft body and a first flange. The first flange is installed at one end of the shaft body, and the first flanges of the two floating shafts are respectively abutted against the two gearboxes, so that the relative positions of the two gearboxes can be determined through the floating shafts.

[0010] As an alternative implementation, the first flange is sleeved on the outer wall of the shaft body and is in interference fit with the outer wall of the shaft body. In this way, on the one hand, the coaxiality between the first flange and the shaft body can be ensured, and on the other hand, the reliability of the assembly of the first flange and the shaft body can be improved.

[0011] As an alternative implementation, in the auxiliary machine pre-assembly tooling for diesel locomotives provided in the present application, both floating shafts also each include two end covers. The two end covers are respectively arranged at both ends of the shaft body. The shaft body can be a hollow pipe fitting, and the outer edges of the two end covers can be respectively abutted against the inner wall of the shaft body.

[0012] As an alternative implementation, in the auxiliary machine pre-assembly tooling for diesel locomotives provided in the present application, the floating shaft can also include a second flange. The second flange is located at the other end opposite to the first flange and is detachably connected to the end cover. The second flanges of the two floating shafts are arranged oppositely, and the second flange can provide a limiting function when the floating shaft moves.

[0013] As an alternative implementation, the second flange and the end cover are connected by threaded fasteners, so as to facilitate the assembly of the floating shaft on the base.

[0014] As an alternative implementation, scale lines are arranged axially on both floating shafts, and the specific value of the distance between the two gearboxes can be positioned and identified through the scale lines.

[0015] As an alternative implementation, the base includes a bracket and a mounting table. The mounting table is horizontally arranged on the bracket, and by adjusting the horizontal position of the mounting table, the radial position of the floating shaft relative to the two gearboxes is ensured.

[0016] As an alternative implementation, a plurality of coaxial support bushings are arranged on the mounting table, and the floating shaft is inserted into the support bushings so that the floating shaft moves along the axial direction of the bushing.

[0017] As an alternative implementation, a reference member is arranged on the mounting table. The reference member is arranged between the two floating shafts to determine the position of the mounting table relative to the diesel locomotive, so as to determine the reference position for pre-installing the auxiliary machine by the auxiliary machine pre-assembly tooling of the present application.

[0018] The diesel locomotive auxiliary machine pre-assembly tool provided by the present application includes a base and two floating shafts, which are coaxially arranged on the base. The two gearboxes in the auxiliary machine of the diesel locomotive are respectively abutted against the ends of the two floating shafts that are away from each other. The two floating shafts can be moved axially relative to the base to adjust the distance between the two gearboxes. Therefore, when assembling the auxiliary machine of the diesel locomotive provided by the present application, the auxiliary machine pre-assembly tool does not need to use the main machine of the internal combustion engine as a reference, that is, the auxiliary machine can be assembled independently when the main machine is being repaired. By pulling the floating shaft to locate the distance between the two gearboxes, the installation of the two gearboxes is completed and then the starting motor, excitation motor and ventilator are installed based on it. This can save the maintenance and assembly cycle of the diesel locomotive and improve efficiency.

[0019] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the diesel locomotive auxiliary machine pre-installation tooling provided by the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 This is a schematic structural diagram of the pre-assembly tooling for auxiliary machinery of a diesel locomotive provided in an embodiment of the present application;

[0022] Figure 2 1 is a side view of a pre-assembly tool for an auxiliary machine of a diesel locomotive provided in an embodiment of the present application;

[0023] Figure 3 This is a schematic structural diagram of a floating shaft in a pre-assembly tooling for an auxiliary machine of a diesel locomotive provided in an embodiment of the present application;

[0024] Figure 4 This is a partial view of the diesel locomotive auxiliary machine pre-assembly tooling provided in an embodiment of the present application.

[0025] Description of reference numerals:

[0026] 10- base;

[0027] 11- bracket;

[0028] 12-mounting table;

[0029] 121 - Reference part;

[0030] 122 - Horizontal adjustment part;

[0031] 13 - Support bushing;

[0032] 14 - Oil cup;

[0033] 15 - Guide rod;

[0034] 20 - Floating shaft;

[0035] 21 - Shaft body;

[0036] 211 - Scale line;

[0037] 22 - First flange;

[0038] 23 - End cover;

[0039] 24 - Second flange;

[0040] 25 - Threaded fastener;

[0041] 100 - First transmission;

[0042] 200 - Second transmission. Detailed implementation manners

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, rather than all of the embodiments.

[0044] First of all, those skilled in the art should understand that these implementation manners are only used to explain the technical principle of this application and are not intended to limit the protection scope of this application. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.

[0045] Secondly, it should be noted that in the description of this application, the terms indicating directions or positional relationships such as "inner" and "outer" are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of this application.

[0046] In addition, it should be noted that, in the description of this application, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can mean fixed connection, detachable connection, or integral connection; it can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0047] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0048] The power system of a diesel locomotive typically includes a main engine and auxiliary engines. The main engine is usually a diesel engine, and the auxiliary engines usually include a gearbox, excitation motor, starting motor, and ventilator. The gearbox in the auxiliary engine needs to be connected to the main engine so that the main engine can transmit power by driving the auxiliary engines. The main engine of a diesel locomotive requires regular maintenance, and the maintenance process requires the disassembly and installation of the auxiliary engines. The assembly accuracy of the auxiliary engines will affect the reliability of the diesel locomotive's operation and the service life of the drive shaft. Low installation accuracy will cause locomotive vibration. The gearbox and the main engine are connected by a drive shaft. Low installation accuracy will cause the drive shaft to run out in the axial and radial directions, causing vibration of the entire auxiliary engine. Long-term vibration can cause the nylon rope in the ventilator to wear, reducing its service life and even causing quality problems such as cracking in the auxiliary engine installation floor.

[0049] In the prior art, when assembling the main engine and auxiliary engines after overhaul, the main engine is usually used as the installation reference to ensure the assembly accuracy between the auxiliary engines and the main engine. Specifically, the main engine is overhauled first, and then the gearbox is installed based on the main engine. Thereafter, the excitation motor, starter motor, ventilator and other components are installed based on the gearbox.

[0050] However, conventional assembly of auxiliary components requires the main engine to be overhauled before it can be performed, resulting in lengthy overhaul and assembly cycles. Furthermore, installing the auxiliary components based on the main engine makes adjustment difficult, resulting in low assembly accuracy. Furthermore, the limited space available for assembly on the main engine makes wiring difficult, reducing work efficiency.

[0051] The embodiment of the present application provides a pre-assembly tooling for auxiliary machines of a diesel locomotive, which can independently complete the assembly of auxiliary machines during the overhaul of the main engine, shorten the overhaul and assembly cycle of the diesel locomotive, provide sufficient operating space for the assembly of auxiliary machines, and improve the assembly accuracy of auxiliary machines.

[0052] Figure 1 FIG. 4 is a schematic structural view of the pre-assembly tooling for auxiliary machines of a diesel locomotive provided by the embodiment of the present application. Figure 2 FIG. 5 is a side view of the pre-assembly tooling for auxiliary machines of a diesel locomotive provided by the embodiment of the present application. As shown in FIGS. 5 and 6, the pre-assembly tooling for auxiliary machines of a diesel locomotive provided by the embodiment of the present application is used for pre-installing the auxiliary machines of a diesel locomotive. The auxiliary machines include two gearboxes, for example, a first gearbox 100 and a second gearbox 200. The pre-assembly tooling for auxiliary machines of a diesel locomotive includes a base 10 and two floating shafts 20. The two floating shafts 20 are coaxially arranged on the base 10. Figure 1 and Figure 2 As shown in FIGS. 5 and 6, the pre-assembly tooling for auxiliary machines of a diesel locomotive provided by the embodiment of the present application is used for pre-installing the auxiliary machines of a diesel locomotive. The auxiliary machines include two gearboxes, for example, a first gearbox 100 and a second gearbox 200. The pre-assembly tooling for auxiliary machines of a diesel locomotive includes a base 10 and two floating shafts 20. The two floating shafts 20 are coaxially arranged on the base 10.

[0053] Specifically, the first gearbox 100 and the second gearbox 200 respectively abut against the opposite ends of the two floating shafts 20. The ends of the two floating shafts 20 extend out from the edge of the base 10, that is, the first gearbox 100 and the second gearbox 200 are arranged at the ends of the pre-assembly tooling for auxiliary machines of a diesel locomotive. The two floating shafts 20 can respectively move axially relative to the base 10 to adjust the distance between the first gearbox 100 and the second gearbox 200.

[0054] It should be noted that when the pre-assembly tooling for auxiliary machines of a diesel locomotive provided by the present application is used for assembling the auxiliary machines of an internal combustion engine, it does not need to be based on the main engine of the internal combustion engine. That is, when the main engine is being repaired, the assembly of the auxiliary machines can be carried out independently. Specifically, by pulling the floating shaft 20 to position the distance between the first gearbox 100 and the second gearbox 200, after the installation of the first gearbox 100 and the second gearbox 200 is completed, other components such as the starting motor, the excitation motor, and the ventilator are installed based on them, thereby saving the repair and assembly cycle of the diesel locomotive and improving the efficiency.

[0055] In addition, the auxiliary machines of a diesel locomotive may also include other components. The structures and functions of the gearboxes and various components of the auxiliary machines of a diesel locomotive are all prior arts and will not be elaborated in this embodiment.

[0056] As an optional implementation manner, the first gearbox 100 may be the front gearbox of the auxiliary machines of a diesel locomotive, and the second gearbox 200 may be the rear gearbox of the auxiliary machines of a diesel locomotive. When adjusting the installation positions of the first gearbox 100 and the second gearbox 200, the floating shaft 20 abutting against the first gearbox 100 can play the role of positioning the main engine transmission shaft, and the floating shaft 20 abutting against the second gearbox 200 can play the role of positioning the main engine universal shaft.

[0057] Figure 3 It is a schematic structural diagram of the floating shaft in the auxiliary machine pre-assembly tooling of the diesel locomotive provided by the embodiment of the present application. As shown in Figure 3 As shown, as an optional implementation manner, in the auxiliary machine pre-assembly tooling of the diesel locomotive provided by the present application, the floating shaft 20 may include a shaft body 21 and a first flange 22. The first flange 22 is installed at one end of the shaft body 21, and the first flanges 22 of the two floating shafts 20 are respectively abutted against the first transmission 100 and the second transmission 200. Thus, the relative positions of the first transmission 100 and the second transmission 200 can be determined through the floating shaft 20, and the relative installation accuracy of the first transmission 100 and the second transmission 200 can be ensured.

[0058] It should be noted that the relative installation accuracy of the first transmission 100 and the second transmission 200 is relative to the installation accuracy of the main engine. That is, the auxiliary machine pre-assembly tooling of the diesel locomotive actually plays the role of the reference positioning of the main engine. Ensuring the installation accuracy of the first transmission 100 and the second transmission 200 in the axial direction of the floating shaft 20 can avoid the end jump of the auxiliary machine during the operation of the diesel locomotive. That is, under the influence of the vibration of the main engine operation, the first transmission 100 and the second transmission 200 of the auxiliary machine generate periodic crosstalk along the axial directions of the transmission shaft and the universal shaft, correspondingly causing the vibration of other components and affecting the working life of the auxiliary machine components.

[0059] As an optional implementation manner, the first flange 22 is sleeved on the outer wall of the shaft body 21 and is in interference fit with the outer wall of the shaft body 21. In this way, on the one hand, the coaxiality of the first flange 22 and the shaft body 21 can be ensured, and correspondingly, the perpendicularity of the end face of the first flange 22 to the axial direction of the floating shaft 20 can be ensured. On the other hand, the reliability of the assembly of the first flange 22 and the shaft body 21 can be improved.

[0060] Specifically, the first flange 22 can be abutted against the flanges of the first transmission 100 and the second transmission 200 of the auxiliary machine. That is, the first flanges 22 of the two floating shafts 20 extend from the two ends of the base 10 and are respectively abutted against the flanges of the first transmission 100 and the second transmission 200.

[0061] As an optional implementation manner, in the auxiliary machine pre-assembly tooling of the diesel locomotive provided by the present application, the floating shaft 20 may further include two end covers 23. The two end covers 23 are respectively arranged at the two ends of the shaft body 21, and the shaft body 21 may be a hollow pipe fitting.

[0062] Specifically, the end faces of the end covers 23 are aligned with the end faces of the floating shaft 20, and the two end covers 23 can be in interference fit with the inner wall of the shaft body 21, so as to enhance the structural strength of the floating shaft 20.

[0063] As an alternative implementation, in the auxiliary machine pre-assembly tooling for diesel locomotives provided in this application, the floating shaft 20 may further include a second flange 24. The second flange 24 is located at the other end opposite to the first flange 22 and is detachably connected to the end cover 23. The second flanges 24 of the two floating shafts 20 are arranged oppositely, and the second flange 24 can provide a limiting effect when the floating shaft 20 moves.

[0064] Optionally, the diameter of the second flange 24 is larger than the outer diameter of the shaft body 21, and the end face of the second flange 24 is perpendicular to the axial direction of the floating shaft 20, that is, perpendicular to the moving direction of the second flange 24.

[0065] Exemplarily, the second flange 24 and the end cover 23 can be connected by a threaded fastener 25, which facilitates the assembly of the floating shaft on the base. A threaded hole can be provided at one end of the end cover 23 facing the outside of the shaft body 21, and a through hole opposite to the threaded hole is provided on the end cover 23. When installing the second flange 24, the second flange 24 can be abutted against the end of the shaft body 21, so that the threaded hole on the end cover 23 is opposite to the through hole on the second flange 24, and the threaded fastener 25 is screwed into the threaded hole. The threaded fastener 25 can be a screw or a bolt.

[0066] It should be noted that when installing the floating shaft 20 onto the base 10, the first flange 22 can be first installed onto the shaft body 21, then the floating shaft 20 is installed onto the base 10, and finally the installation of the second flange 24 on the floating shaft 20 is completed. Thus, when the floating shaft 20 slides outward relative to the base 10, that is, when the two floating shafts 20 slide away from each other, the second flange 24 can prevent the floating shaft 20 from slipping off the base 10.

[0067] As an alternative implementation, scale lines 211 distributed axially can be provided on both floating shafts 20. The specific value of the distance between the first transmission 100 and the second transmission 200 can be located and identified through the scale lines.

[0068] Optionally, the unit interval of the scale lines 211 can be set according to the moving stroke of the floating shaft 20, and this embodiment does not make specific limitations in this regard. Exemplarily, the minimum unit interval of the scale lines 211 can be 1 mm.

[0069] As an alternative implementation, the base 10 includes a bracket 11 and a mounting table 12. The mounting table 12 is horizontally arranged on the bracket 11. By adjusting the horizontal position of the mounting table 12, the radial position of the floating shaft 20 relative to the first transmission 100 and the second transmission 200 is ensured.

[0070] Specifically, the floating shaft 20 is horizontally arranged on the mounting table 12. In the radial direction of the floating shaft 20, its height relative to the mounting table 12 can be adjusted. In addition, the radial position of the floating shaft 20 can also be adjusted by adjusting the horizontal height of the mounting table 12.

[0071] Figure 4 It is a partial view of the pre-assembly tooling for auxiliary machines of an internal combustion locomotive provided by an embodiment of the present application, that is Figure 1 The partial view at position A in Figure 4 As shown, optionally, a plurality of coaxial support bushings 13 can be provided on the mounting table 12, and the floating shaft 20 can be inserted into the support bushings 13. Thus, the floating shaft 20 can move along the axial direction of the support bushings 13. At the same time, due to the coaxial arrangement of the plurality of support bushings 13, the coaxiality between the two floating shafts 20 can be ensured, and correspondingly, the installation accuracy of the first transmission 100 and the second transmission 200 is ensured. In addition, the floating shaft 20 and the support bushings 13 can be installed in a clearance fit manner, which can avoid the radial crosstalk of the floating shaft 20 while enabling the floating shaft 20 to slide smoothly.

[0072] Optionally, the support bushings 13 can be detachably installed on the mounting table 12 by bolts, and when assembling the support bushings 13, the horizontal height of the axis of the support bushings 13 relative to the plane of the mounting table 12 can be changed by adding shims.

[0073] Exemplarily, two support bushings 13 can be correspondingly provided for each floating shaft 20, so as to ensure the stability of the support for the floating shaft 20 and avoid radial deviation of the floating shaft 20 during the axial movement.

[0074] In addition, as an optional implementation manner, an oil cup 14 can be provided at the top of the support bushing 13. The bottom end of the oil cup 14 is inserted into the through hole at the top of the support bushing 13. The oil cup 14 is filled with lubricating oil, and the lubricating oil can flow from the through hole at the top of the support bushing 13 to the position where it mates with the floating shaft 20, thereby playing a lubricating role for the sliding of the floating shaft 20 and making it smoother and more labor-saving when adjusting the position of the floating shaft 20 along the axial direction.

[0075] It should be noted that the levelness of the mounting table 12 can be adjusted by a level. The levelness of the floating shaft 20 depends on the levelness of the mounting platform 12. In addition, since the mounting table 12 is installed on the bracket 11, a plurality of horizontal adjusting members 122 can also be provided on the mounting table 12. The plurality of horizontal adjusting members 122 can be respectively arranged at different positions along the length direction of the mounting table 12. Thus, after measuring the levelness of the mounting table 12 by a level, the mounting table 12 can be made to reach a horizontal state by adjusting the local horizontal adjusting members 122.

[0076] Optionally, a plurality of guide rods 15 may be provided on the bracket 11. The guide rods 15 are correspondingly arranged with the horizontal adjusting member 122. When adjusting the horizontal height of the mounting table 12 through the horizontal adjusting member 122, the mounting table 12 moves relative to the length direction of the guide rods 15, thereby avoiding axial movement when adjusting the level of the mounting table 12.

[0077] Exemplarily, the horizontal adjusting member 122 may be a support bolt. By rotating the support bolt, the height of the mounting table 12 can be adjusted. Correspondingly, by rotating the support bolts at different positions, the mounting table 12 can be adjusted to a horizontal state. The structure of the horizontal adjusting member 122 is not specifically limited in this embodiment.

[0078] As an alternative embodiment, a reference member 121 is provided on the mounting table 12. The reference member 121 is arranged between the two floating shafts 20, thereby determining the reference position for pre-installing the auxiliary machine of the diesel locomotive auxiliary machine pre-installation tooling of the present application.

[0079] Specifically, the reference member 121 may be a reference plate. The surface of the reference plate may be parallel to the tabletop of the mounting table 12. In this way, the levelness of the mounting table 12 can be characterized by measuring the levelness of the reference plate, and the levelness of the mounting table 12 can be adjusted based on this.

[0080] It should be noted that adjusting the horizontal state of the mounting table 12 is to make the floating shafts 20 reach a horizontal state. In addition to moving axially to determine the axial positions of the first transmission 100 and the second transmission 200, the horizontal floating shafts 20 can provide a reference for the radial positions of the first transmission 100 and the second transmission 200. When the first flanges 22 at the ends of the two floating shafts 20 are respectively abutted against the first transmission 100 and the second transmission 200, the end play and radial runout of the first transmission 100 and the second transmission 200 can be measured by a dial indicator and a feeler gauge, and can be adjusted by adding or reducing shims to the first transmission 100 and the second transmission 200, thereby ensuring the stability and reliability of the overall operation of the diesel locomotive after the main engine is installed subsequently, and reducing the vibration of the auxiliary machine during the operation of the diesel locomotive.

[0081] The auxiliary machine pre-assembly tooling for diesel locomotives provided in this embodiment is used for pre-assembling the auxiliary machines of diesel locomotives. The auxiliary machines include a first gearbox and a second gearbox. This auxiliary machine pre-assembly tooling for diesel locomotives includes a base and two floating shafts. The two floating shafts are coaxially arranged on the base. The first gearbox and the second gearbox respectively abut against the opposite ends of the two floating shafts. The two floating shafts can respectively move axially relative to the base to adjust the distance between the first gearbox and the second gearbox. Therefore, when assembling the auxiliary machines of the internal combustion engine using the auxiliary machine pre-assembly tooling provided in this application, it is not necessary to use the main engine of the internal combustion engine as a reference. That is, when the main engine is being repaired, the auxiliary machines can be assembled independently. By pulling the floating shafts to position the distance between the first gearbox and the second gearbox, after installing the first gearbox and the second gearbox, the starting motor, the excitation motor, and the ventilator are installed based on them, which can save the maintenance and assembly cycle of the diesel locomotive and improve the efficiency.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An auxiliary machine pre-assembly tooling for a diesel locomotive, characterized in that, The diesel locomotive auxiliary machine pre-assembly tooling comprises a base and two floating shafts, wherein the two floating shafts are coaxially arranged on the base; The ends of the two movable shafts that are away from each other are respectively connected to the two gearboxes in the auxiliary machine of the internal combustion locomotive. The two movable shafts can respectively move axially relative to the base to adjust the distance between the two gearboxes. Both of the two movable shafts are provided with scale lines, and the scale directions of the scale lines extend along the axial direction of the movable shaft; The base includes a bracket and a mounting platform, and the mounting platform is horizontally arranged on the bracket; The mounting platform is provided with a plurality of horizontal adjustment members, and the horizontal adjustment members are respectively arranged at different positions along the length direction of the mounting platform; The bracket is provided with a plurality of guide rods, and the guide rods are provided corresponding to the horizontal adjustment member, so that when the horizontal height of the mounting platform is adjusted by the horizontal adjustment member, the mounting platform moves relative to the length direction of the guide rods; A plurality of coaxial support sleeves are provided on the mounting platform, the movable shaft is inserted into the support sleeves, an oil cup is provided on the top of the support sleeve, the bottom end of the oil cup is inserted into the through hole on the top of the support sleeve, and the oil cup is filled with lubricating oil, which flows from the through hole on the top of the support sleeve to the position matching the movable shaft; The two movable shafts each include a shaft body and a first flange, wherein the first flange is mounted on one end of the shaft body; The two movable shafts further include two end covers, which are respectively arranged at both ends of the shaft body. The shaft body is a hollow tube, and the outer edges of the two end covers are respectively in contact with the inner wall of the shaft body. The two floating shafts also include a second flange, which is located at the other end opposite to the first flange and is detachably connected to the end cover. The second flange is connected to the end cover via a threaded fastener.

2. The pre-assembly tooling for auxiliary machines of diesel locomotives according to claim 1, wherein, The first flanges of the two floating shafts are respectively in contact with the two gearboxes.

3. The pre-assembly tooling for auxiliary machines of diesel locomotives according to claim 2, characterized in that, The first flange is sleeved on the outer wall of the shaft body and is interference fit with the outer wall of the shaft body.

4. The auxiliary machine pre-assembly tooling for diesel locomotives according to claim 1, characterized in that, A reference member is provided on the mounting platform, and the reference member is provided between the two floating shafts to determine the position of the mounting platform relative to the diesel locomotive.

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