Working position apparatus for supporting transfer of electric locomotive wheelset gearbox

Abstract

The utility model discloses a working position apparatus for supporting the transfer of an electric locomotive wheelset gearbox, which relates to the field of electric locomotive transfer tools, and comprises a vehicle body for supporting the gearbox, a hollow part is arranged on the vehicle body, and the position of the hollow part corresponds to the position of a driven wheel of the gearbox; the wheels are detachably connected with a vehicle frame at the bottom of the vehicle body, an axle penetrates through the centers of the wheels and the vehicle frame, and inner holes of the wheels and the peripheral surface of the axle are in a step shape; the working position apparatus can stably support a gear box, so that the axis of a driven gear of the gear box is parallel to the axis of an axle, the working position apparatus can advance along with rolling of a wheel pair, synchronous rolling advancing is achieved, and wheels and the axle can be easily disassembled when bearings are maintained and replaced in the later period.

Description

Technical Field

[0001] The utility model belongs to the field of transfer tools for electric locomotives, and more specifically, relates to a working position device for supporting the transfer of the gearbox of the axle of an electric locomotive. Background Art

[0002] There is little introduction in China about the device for supporting the gearbox of the axle of HX D 3D type electric locomotives. It is mainly to solve two major problems in the process of supporting the gearbox of the axle of HX D 3D type electric locomotives. 1. During the transfer of the axle and the assembly of the axle box, the gearbox is suspended on the axle in an inclined state. When the axle is pushed to rotate, it causes radial wear of the axle, and it is difficult to ensure the assembly quality of the gearbox, resulting in the abrasion of the labyrinth joint of the gearbox sealing ring. In order to ensure the assembly quality of the axle and the gearbox, a working position device must be designed to ensure that the axis of the gearbox is always parallel to the axis of the axle during the forward movement of the axle. 2. In order to ensure that the axle can move forward smoothly on the rail, the working position device has sufficient strength to support the weights of the gearbox, the driven gear, the driving gear, the bearing box and each bearing, and can still stably support the assembly of the gearbox under the condition of bearing sufficient weight, and flexibly move forward together with the forward movement of the axle. Therefore, the design of the device for supporting the axle gearbox should not only ensure that the axis of the gearbox is parallel to the axis of the axle, but also ensure that there is sufficient strength to support the assembly of the gearbox, and at the same time ensure that the working position device can support the assembly of the gearbox and flexibly move forward together with the forward movement of the axle. At present, there is no supporting device in the market that can solve the above two problems at the same time. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a working position device for supporting the transfer of the gearbox of the axle of an electric locomotive in view of the deficiencies of the existing technology. The working position device can not only stably support the gearbox, make the axis of the driven gear of the gearbox parallel to the axis of the axle, but also ensure that the working position device can roll forward synchronously with the rolling of the axle, and can be easily disassembled from the wheel and the axle during the later maintenance and replacement of the bearing.

[0004] In order to achieve the above purpose, the utility model provides a working position device for supporting the transfer of the gearbox of the axle of an electric locomotive, including:

[0005] A vehicle body for supporting the gearbox, with a hollow part provided on the vehicle body, and the position of the hollow part corresponding to the position of the driven wheel of the gearbox;

[0006] Wheels, detachably connected to the vehicle frame at the bottom of the vehicle body. An axle passes through the centers of the wheels and the vehicle frame, and the inner holes of the wheels and the outer peripheral surfaces of the axle are both stepped.

[0007] Optionally, the top surface of the vehicle body is in contact with the bottom surface of the gearbox, and the distance between the top surface of the vehicle body and the upper surface of the track is not less than 200 mm.

[0008] Optionally, a retaining edge is provided on the inner side of the wheel, and the distance between the retaining edge and the inner side of the track is not less than 7 mm.

[0009] Optionally, the diameter of the axle is not less than 10.7 mm, and the material of the axle is 45 steel.

[0010] Optionally, the inner hole of the wheel includes a first stepped hole and a second stepped hole. An internal thread for screwing with a gland is provided on the inner wall of the first stepped hole. A bearing is embedded in the second stepped hole, and the end face of the bearing abuts against the gland.

[0011] Optionally, the outer peripheral surface of the axle includes a first stepped surface and a second stepped surface. An inner sleeve is sleeved on the outer periphery of the first stepped surface, and the second stepped surface and the inner sleeve abut against the two end faces of the bearing.

[0012] Optionally, the end of the axle further includes a third stepped surface. An external thread is provided on the outer periphery of the third stepped surface, and a nut is provided on the external thread. The nut abuts against the vehicle frame.

[0013] Optionally, the specification of the internal thread is M56*2.

[0014] Optionally, the specification of the external thread is M20.

[0015] The present utility model provides a working position device for supporting the transfer of the wheel set and gearbox of an electric locomotive, and its beneficial effects are as follows:

[0016] 1. This working position device realizes the high efficiency of wheel set transfer and axle box assembly, ensures the high efficiency of the process, stably supports the gearbox, and drives the gearbox to move forward together with the rotation of the wheel set;

[0017] 2. The use of this working position device can facilitate the operator to complete the wheel set transfer and axle box assembly processes, is convenient for management, avoids the operator being injured due to unstable support of the workpiece during the operation, and further ensures the safe progress of the process;

[0018] 3. The use of this working position device realizes the smooth progress of wheel set transfer and axle box assembly, avoids the scrapping of parts due to impact and collision, saves the production and assembly costs, and tries to use parts that are easy to purchase and disassemble during the design of the device and the selection of parts, thereby increasing its economic benefits.

[0019] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation part. Brief Description of the Drawings

[0020] The above and other objects, features, and advantages of the present utility model will become more apparent by describing the exemplary embodiments of the present utility model in more detail in conjunction with the accompanying drawings, wherein, in the exemplary embodiments of the present utility model, the same reference numerals generally represent the same components.

[0021] Figure 1 The structural schematic diagram of a work position tool for supporting the transfer of the gearbox of an electric locomotive wheel set is shown according to an embodiment of the present utility model.

[0022] Figure 2 The top view of 1 is shown according to an embodiment of the present utility model.

[0023] Figure 3 The schematic diagram of the connection positions of a wheel, a vehicle frame, and an axle is shown according to an embodiment of the present utility model.

[0024] Figure 4 The structural schematic diagram of a wheel is shown according to an embodiment of the present utility model.

[0025] Figure 5 The structural schematic diagram of an axle is shown according to an embodiment of the present utility model.

[0026] Description of the Reference Numerals:[[]]END]]

[0027] 1, vehicle body; 2, hollowed-out part; 3, wheel; 4, vehicle frame; 5, axle; 6, retaining edge; 7, first stepped hole; 8, second stepped hole; 9, internal thread; 10, bearing; 11, gland; 12, first stepped surface; 13, second stepped surface; 14, inner sleeve; 15, third stepped surface; 16, external thread. Detailed Embodiment

[0028] The preferred embodiments of the present utility model will be described in more detail below. Although the following describes the preferred embodiments of the present utility model, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present utility model more thorough and complete, and to fully convey the scope of the present utility model to those skilled in the art.

[0029] The present utility model provides a work position tool for supporting the transfer of the gearbox of an electric locomotive wheel set, including:

[0030] A vehicle body for supporting the gearbox, with a hollowed-out part provided on the vehicle body, and the position of the hollowed-out part corresponding to the position of the driven wheel of the gearbox;

[0031] The wheel is detachably connected to the frame at the bottom of the vehicle body. An axle passes through the centers of the wheel and the frame. The inner hole of the wheel and the outer peripheral surface of the axle are both stepped.

[0032] Specifically, a hollow portion is provided on the vehicle body of this work position fixture, which can avoid the driven gear protruding from the bottom of the gearbox and contacting the vehicle body when supporting the gearbox, causing damage to the gearbox. In addition, the wheels and axles on the vehicle body are set in a form that is convenient for disassembly, which is convenient for future maintenance and replacement.

[0033] Optionally, the top surface of the vehicle body is in contact with the bottom surface of the gearbox, and the distance between the top surface of the vehicle body and the upper surface of the track is not less than 200 mm.

[0034] Specifically, in order to ensure that this work position fixture can support the gearbox and make its axis parallel to the axis of the axle, it is calculated through the drawing that when the wheel set contacts the track, the distance between the bottom of the gearbox and the track plane is 205 mm. Considering the unevenness of the ground, the total height of this work position fixture is designed to be 200 mm.

[0035] Optionally, a retaining edge is provided on the inner side of the wheel, and the distance between the retaining edge and the inner side of the track is not less than 7 mm.

[0036] Specifically, considering the position of the gearbox on the wheel set, the space problem of the gearbox, and the manufacturing error of designing and manufacturing the work position fixture, the distance between the retaining edge of the wheel of the gearbox support trolley and the trolley track is designed to be 7 mm, the inner distance of the trolley track is designed to be 245 mm, and the outer distance is 245 mm - 14 mm = 231 mm. In this way, the retaining edge of the wheel will not rub against the railway track, and the reserved 7 mm safety distance is used to make up for the errors generated during welding and assembly.

[0037] Optionally, the diameter of the axle is not less than 10.7 mm, and the material of the axle is 45 steel.

[0038] Specifically, the most complex stress component of this work position fixture is the axle. The diameter of the axle of the support gearbox trolley is initially designed. Considering the total weight W 总 = 954 Kg of the gearbox assembly, the rolling friction coefficient μ = 0.003 - 0.005, the frictional force F of a single wheel of the gearbox trolley S = μmg = 0.005×954×9.8÷4 = 12 N, the annual transfer distance of the wheel set is S = 6960 m, it takes 50 S to push the wheel set to rotate one week, and the distance advanced by the wheel set in one week of rotation is 3.9 m. Then it is calculated that the annual rotation time of the wheel set is 89230 s, and the power of the gearbox trolley is P = W / t = F S * S / t = 0.94 N.m / S. Based on this, it can be calculated that the minimum diameter of the axle of the gearbox trolley made of 45 steel

[0039] Optionally, the inner hole of the wheel includes a first stepped hole and a second stepped hole. An internal thread for screwing with the gland is provided on the inner wall of the first stepped hole, and a bearing is embedded in the second stepped hole. The end face of the bearing abuts against the gland.

[0040] Specifically, the outer diameter of the wheel needs to be designed with a flange to ensure that the trolley can move forward along the track during rolling without swinging randomly. The inner diameter of the wheel needs to be designed in a stepped shape to ensure the position of the outer ring of the bearing in the axial direction on the wheel. An internal thread is designed in the first stepped hole of the wheel, so that when the gland is screwed into the wheel, the position of the outer ring of the bearing in the axial direction is fixed.

[0041] Optionally, the outer peripheral surface of the axle includes a first stepped surface and a second stepped surface. An inner sleeve is sleeved on the outer periphery of the first stepped surface, and the second stepped surface and the inner sleeve abut against the two end faces of the bearing.

[0042] Specifically, the axle also needs to be designed in a stepped shape to ensure the position of the inner ring of the bearing in the axial direction of the axle. The inner peripheral surface of the bearing fits with the outer peripheral surface of the first stepped surface, and the installation position of the inner sleeve is also ensured through the first stepped surface, so that the inner sleeve abuts against one end of the bearing. In addition, the end face of the second stepped surface of the axle abuts against the other end of the bearing, so as to ensure the accurate position of the bearing in the axial direction of the axle.

[0043] Optionally, the end of the axle further includes a third stepped surface. An external thread is provided on the outer periphery of the third stepped surface, and a nut is provided on the external thread. The nut abuts against the vehicle frame.

[0044] Specifically, third stepped surfaces are respectively provided at both ends of the axle, and nuts are installed on the third stepped surfaces through external threads. The nuts can abut against the vehicle frame, so as to ensure the accurate axial position of the axle on the support.

[0045] Optionally, the specification of the internal thread is M56*2.

[0046] Optionally, the specification of the external thread is M20.

[0047] Embodiment

[0048] As Figures 1 to 5 shown, the present utility model provides a working device for supporting the transfer of the gearbox of an electric locomotive wheel set, including:

[0049] A vehicle body 1 for supporting the gearbox. A hollow part 2 is provided on the vehicle body 1, and the position of the hollow part 2 corresponds to the position of the driven wheel of the gearbox;

[0050] Wheels 3, which are detachably connected to the vehicle frame 4 at the bottom of the vehicle body 1. An axle 5 passes through the centers of the wheels 3 and the vehicle frame 4. The inner hole of the wheels 3 and the outer peripheral surface of the axle 5 are both stepped.

[0051] In this embodiment, the top surface of the vehicle body 1 is in contact with the bottom surface of the gearbox, and the distance between the top surface of the vehicle body 1 and the upper surface of the track is not less than 200 mm.

[0052] In this embodiment, a retaining edge 6 is provided on the inner side of the wheel 3, and the distance between the retaining edge 6 and the inner side of the track is not less than 7 mm.

[0053] In this embodiment, the diameter of the axle 5 is not less than 10.7 mm, and the material of the axle 5 is 45 steel.

[0054] In this embodiment, the inner hole of the wheel 3 includes a first stepped hole 7 and a second stepped hole 8. An internal thread 9 for screwing with the gland 11 is provided on the inner wall of the first stepped hole 7. A bearing 10 is embedded in the second stepped hole 8, and the end face of the bearing 10 abuts against the gland 11.

[0055] In this embodiment, the outer peripheral surface of the axle 5 includes a first stepped surface 12 and a second stepped surface 13. An inner sleeve 14 is sleeved on the outer periphery of the first stepped surface 12, and the second stepped surface 13 and the inner sleeve 14 abut against the two end faces of the bearing 10.

[0056] In this embodiment, the end of the axle 5 further includes a third stepped surface 15. An external thread 16 is provided on the outer periphery of the third stepped surface 15. A nut is provided on the external thread 16, and the nut is in contact with the vehicle frame 4.

[0057] In this embodiment, the specification of the internal thread 9 is M56*2.

[0058] In this embodiment, the specification of the external thread 16 is M20.

[0059] In summary, during the use of this workstation fixture, the gearbox is placed on the vehicle body 1, and the driven gear of the gearbox corresponds to the hollow portion 2. In this way, when the vehicle body moves, the driven gear will not collide and damage with the vehicle body 1; in addition, when the wheel 3 and the axle 5 need to be replaced, it is only necessary to ensure that the gland 11 is installed in place in the first stepped hole 7 through the internal thread 9 to ensure the accurate axial position of the bearing 10 in the inner hole of the wheel 3. In addition, the two ends of the bearing are clamped and fixed by the inner sleeve 14 and the second stepped surface 14, so as to ensure the accurate axial position of the bearing on the axle 5, and thus reduce the disassembly difficulty of the wheel 3 and the axle 5.

[0060] The above has described the embodiments of the present invention. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments.

Claims

1. A station device for supporting the transfer of the gearbox of an electric locomotive wheel set, characterized in that: include: A vehicle body, used to support the gear box, wherein a hollow portion is provided on the vehicle body, and the position of the hollow portion corresponds to the position of the driven wheel of the gear box; The wheel is detachably connected to the frame at the bottom of the vehicle body, an axle is provided through the center of the wheel and the frame, and the inner hole of the wheel and the outer peripheral surface of the axle are both stepped.

2. The workstation device for supporting the transfer of the gearbox of the electric locomotive wheel set according to claim 1 is characterized in that: The top surface of the vehicle body is in contact with the bottom surface of the gear box, and the distance between the top surface of the vehicle body and the upper surface of the track is not less than 200 mm.

3. The workstation device for supporting the transfer of the gearbox of the electric locomotive wheel set according to claim 2 is characterized in that: A rib is provided on the inner side of the wheel, and the distance between the rib and the inner side of the track is not less than 7 mm.

4. The workstation device for supporting the transfer of the gearbox of the electric locomotive wheel set according to claim 1 is characterized in that: The diameter of the axle is not less than 10.7 mm, and the material of the axle is 45 steel.

5. The workstation device for supporting the transfer of the gearbox of the electric locomotive wheel set according to claim 1 is characterized in that: The inner hole of the wheel includes a first step hole and a second step hole, the inner wall of the first step hole is provided with an internal thread screwed to the pressure cover, and the second step hole is embedded with a bearing, and the end face of the bearing is against the pressure cover.

6. The workstation device for supporting the transfer of the gearbox of the electric locomotive wheel set according to claim 5 is characterized in that: The outer peripheral surface of the axle comprises a first step surface and a second step surface, the outer peripheral sleeve of the first step surface is provided with an inner sleeve, and the second step surface and the inner sleeve abut against two end surfaces of the bearing.

7. The workstation device for supporting the transfer of the gearbox of the electric locomotive wheel set according to claim 6 is characterized in that: The end of the axle further comprises a third step surface, the outer periphery of the third step surface is provided with an external thread, a nut is provided on the external thread, and the nut is fitted with the frame.

8. The workstation device for supporting the transfer of the gearbox of the electric locomotive wheel set according to claim 5, characterized in that: The specification of the internal thread is M56*2.

9. The workstation device for supporting the transfer of the gearbox of the electric locomotive wheel set according to claim 7, characterized in that: The specification of the external thread is M20.

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