A cone seat for a traction motor of a mine dump truck

Abstract

The present application relates to the technical field of motor, disclose a kind of mining dump truck traction motor cone seat, machine seat body includes guide cone section, gradual change cone section, installation cooperation section;The outer edge of the large end face of guide cone section is fixedly connected with the small end face of gradual change cone section, the large end face of gradual change cone section is fixedly connected with the front end face of installation cooperation section;Multiple rib plates are evenly provided in the inner wall of machine seat body along its axial direction, rib plate is arranged in gradual change cone section and installation cooperation section, the front end of rib plate is adapted to abut on the inner edge of the large end face of guide cone section, the rear end of installation cooperation section forms flange ring portion inward, the rear end of rib plate is adapted to abut on the side surface of the flange ring portion of installation cooperation section;The front part of all rib plates is provided with stator core positioning card located in the same section.This device breaks through the traditional thinking of conventional cylindrical installation seat, innovatively by the shape of machine seat is transformed, the internal wind resistance of traction motor is reduced, and the wind pressure of external air supply system is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the motor technology field, especially to the motor technology field of the mine dump truck, and specifically to a mine dump truck traction motor conical base. BACKGROUND

[0002] The mine dump truck is a heavy-duty dump truck used by the open-pit mine to complete the rock earthwork stripping and ore transportation task, and its working characteristics are short haul distance and heavy load. The large mine dump truck adopts electric drive mode, and the engine drives the generator, and then drives the traction motor installed in the rear wheel of the dump truck by electric current.

[0003] The mine dump truck traction motor is long-term operated under the special working conditions of large current impact, large torque starting, long and large slope, frequent starting, and the like, and the cooling efficiency is required to be high, and the design of the traction motor base structure directly affects the weight of the whole machine, the structure form of the cooling air path, the air resistance of the traction motor, and the installation and positioning mode of the traction motor in the rear wheel of the dump truck.

[0004] At present, the existing dump truck motor base generally adopts a cylindrical structure, that is, the diameters of the front end and the rear end of the base are completely consistent. The mounting and cooperating surface of the rear wheel of the dump truck is also consistent. This structure has the following shortcomings:

[0005] 1. The diameters of the front end and the rear end of the base are the same, and the cooling air flowing through the inside of the traction motor encounters a sharp change in the cross section of the end cover at the outlet, so that the internal air resistance of the traction motor with this base structure is large, which affects the cooling effect and increases the air supply pressure of the external air supply system.

[0006] 2. The mounting and cooperating surface of the rear wheel of the dump truck is the same, and the traction motor is difficult to install.

[0007] Therefore, it is necessary to study and solve the problems that the existing base with a cylindrical structure cannot meet the cooling effect, the internal air resistance is large, the pressure requirement of the external air supply system is high, and the installation is difficult. SUMMARY

[0008] The present application provides a mine dump truck traction motor conical base to solve the problems that the existing base with a cylindrical structure cannot meet the cooling effect, the internal air resistance is large, the pressure requirement of the external air supply system is high, and the installation is difficult.

[0009] The present application adopts the following technical solutions:

[0010] The application provides a conical seat for a traction motor of a mine dump truck, which comprises a seat body and a rib plate.

[0011] In the implementation, the conical seat for the traction motor of the mine dump truck comprises a seat body and a rib plate, the seat body comprises a guide conical section, a gradually-changing conical section and a mounting and matching section which are connected smoothly.

[0012] The conical angle of the guide conical section is 10°, the outer diameter of the small end surface of the guide conical section is φ618 mm, the inner diameter is φ568 mm, the outer diameter of the large end surface of the guide conical section is φ660 mm, and the inner diameter is φ610 mm.

[0013] The large end surface of the guide conical section is fixedly connected with the small end surface of the gradually-changing conical section, the large end surface of the gradually-changing conical section is fixedly connected with the front end surface of the mounting and matching section, the length of the gradually-changing conical section is 856 mm, the outer diameter of the small end surface of the gradually-changing conical section is φ660 mm, the inner diameter is φ630 mm, the outer diameter of the large end surface of the gradually-changing conical section is φ670 mm, and the inner diameter is φ640 mm.

[0014] The front end of the mounting and matching section is formed with a mounting slope surface, the traction motor is mounted in place at the rear wheel of the dump truck, the mounting and matching section bears the weight of the rear end of the entire motor and the vibration and impact during operation, is safe and reliable, the small end surface of the guide conical section is the front end surface of the seat body, the diameter of the front end surface is smaller than the diameter of the mounting position of the traction motor, the guide conical section provides guidance for the mounting of the traction motor, the mounting is facilitated, the front end surface is the air outlet end of the air passage in the traction motor, the front end surface is uniformly provided with front mounting holes for mounting the end cover, the free end of the mounting and matching section is provided with a rear end surface, the rear end surface is the air inlet end of the air passage in the traction motor, and the rear end surface is uniformly provided with rear mounting holes.

[0015] The eight rib plates are uniformly arranged on the inner wall of the base body along the axial direction, and the eight rib walls of the inner wall of the rib plates form a regular octagonal prism after being extended, that is, the diameters of the front and rear ends of the inner wall of the rib plate are consistent, stably supporting the stator core of the traction motor, the support rib plates are arranged in the tapered cone section and the mounting and matching section, the rib plate is attached to the inner wall of the tapered cone section, and a ventilation channel is formed between the adjacent two rib plates to provide an air path for the internal cooling air of the traction motor, and the cooling air stably flows in parallel between the ventilation channels, the front end of the rib plate is adapted to abut against the inner edge of the large end face of the guide cone section, the inner edge of the large end face of the guide cone section is 20mm high, the rear end of the mounting and matching section forms a flange ring part inwardly, the rear end of the rib plate is adapted to abut against the side surface of the flange ring part of the mounting and matching section, and the front part of all the rib plates is provided with a stator core positioning clamp located at the same section, the front end of the stator core abuts against the stator core positioning clamp, and the stator core is stably clamped in the base.

[0016] In use, the traction motor is installed in the base, the front end of the stator core abuts against the stator core positioning clamp, and the stator core abuts against the rib plate around; the base together with the traction motor is installed on the mine dump truck, and when installing, the guide cone section enters the installation position first to provide guidance for the installation of the base, thereby reducing the difficulty of installing the traction motor; after installation, the cooling air enters from the rear end face, passes through the ventilation channel between the rib plates, and moves forward stably and uniformly due to the consistent inner diameters of the mounting and matching section; then the cooling air enters the tapered cone section, the inner diameter of which slowly decreases and is smooth and stable; finally, the cooling air separates from the ventilation channel and enters the guide cone section, the degree of change of the inner diameter of which is larger than that of the tapered cone section, until the front end face, thereby reducing the degree of change of the cross section of the air outlet of the traction motor, reducing the local resistance coefficient of the air path of the base, reducing the air resistance, and solving the problem of large air resistance of the existing structure.

[0017] Compared with the prior art, the mine dump truck traction motor cone base designed in the application adopts a two-section cone structure and is optimally designed to minimize the degree of change of the cross section of the air outlet of the traction motor, reduce the local resistance coefficient of the air path of the base, effectively reduce the air resistance, and solve the problem of large air resistance and the need to increase the air supply pressure of the existing structure. At the same time, the cone guide matching structure is adopted, the front end matching diameter is small, the rear end matching diameter is large, and the front end matching adopts a cone structure, thereby reducing the difficulty of installing the traction motor and solving the problem of time-consuming and laborious installation of the existing motor base. The shape of the base is innovatively transformed, breaking through the traditional thinking of the conventional cylindrical installation base.

[0018] The internal structure of the conical base of the mine dump truck traction motor provides a transition smooth, gradually smaller cooling air duct for the internal cooling air of the traction motor, reduces the internal air resistance of the traction motor, and reduces the air pressure of the external air supply system. The external structure of the conical base of the mine dump truck traction motor provides a transition smooth, gradually expanding installation guide surface for the installation of the traction motor, and uses the guide conical surface and the installation matching surface for installation and fixation, forms the front and rear ends of the traction motor to bear the weight of the entire motor and the vibration and impact in the running process, and has high reliability. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective structural schematic diagram of the present application.

[0020] Figure 2 It is an axial sectional view of the present application.

[0021] Figure 3 It is a structural schematic diagram of the rib plate in the present application.

[0022] In the figure: 1 - front end surface, 2 - guide conical section, 3 - gradually changing conical section, 4 - rib plate, 5 - installation matching section, 6 - rear end surface, 7 - stator core positioning clamp, 8 - flange ring part, 9 - front installation hole, 10 - rear installation hole, 11 - ventilation duct, 12 - installation slope surface. DETAILED DESCRIPTION

[0023] The specific embodiments of the present application will be described in detail below.

[0024] A mine dump truck traction motor conical base, as shown in the figure: Figure 1 The base body includes an externally smooth connected guide conical section 2, a gradually changing conical section 3, and an installation matching section 5. The guide conical section 2 is in a hollow conical cylinder shape, the conical angle is 10°, the small end surface outer diameter of the guide conical section 2 is φ618mm, the inner diameter is φ568mm, the large end surface outer diameter of the guide conical section 2 is φ660mm, and the inner diameter is φ610mm. The guide conical section 2 provides a transition smooth, gradually smaller cooling air duct for the internal cooling air of the traction motor, reduces the internal air resistance of the traction motor, and the cooling air encounters a sharp cross section change at the outlet of the end cover.

[0025] The outer edge of the large end surface of the guide cone section 2 is fixedly connected with the small end surface of the gradually changing cone section 3, the rib plate positioning table 7 is 20 mm high, the front end of the rib plate 4 abuts against the rib plate positioning table 7, the starting ends of the completely same rib plates 4 are aligned, the inner wall of the rib plate 4 is smoothly connected with the inner wall of the guide cone section 2, the large end surface of the gradually changing cone section 3 is fixedly connected with the front end surface of the installation and cooperation section 5, the length of the gradually changing cone section 3 is 856 mm, the outer diameter of the front end surface of the gradually changing cone section 3 is φ660 mm, and the inner diameter is φ630 mm; the front end diameter of the gradually changing cone section 3 is smaller than the rear end diameter, the outer diameter of the rear end surface of the gradually changing cone section 3 is φ670 mm, and the inner diameter is φ640 mm; the diameter of the gradually changing cone section 3 gradually decreases in the direction of the movement of the cooling air, which provides a slow transition air duct for the movement of the cooling air, and at the same time, the slow transition provides a buffer for the 210° conical surface angle of the guide cone section 2 in advance;

[0026] The front end outer peripheral part of the installation and cooperation section 5 is formed with an installation slope surface 12, the installation slope surface 12 reaches the position where the traction motor is installed at the rear wheel of the dump truck, the installation and cooperation section 5 bears the rear end weight of the whole motor and the vibration and impact in the running process, is safe and reliable, the small end surface of the guide cone section 2 serves as the front end surface 1 of the machine seat body, the diameter of the front end surface 1 is smaller than the installation position diameter of the traction motor, the outside of the guide cone section 2 provides guidance for the installation of the traction motor, which is convenient for installation, the front end surface 1 is the air outlet end of the internal air duct of the traction motor, the front end surface 1 is uniformly provided with front mounting holes 9 for mounting an end cover, the free end of the installation and cooperation section 5 is provided with a rear end surface 6, the rear end surface is the air inlet end of the internal air duct of the traction motor, and the rear end surface 6 is uniformly provided with rear mounting holes 10.

[0027] Eight rib plates 4 are uniformly arranged on the inner wall of the machine seat body along the axial direction, the eight rib walls of the inner wall of the rib plate 4 constitute a regular octagonal prism after being extended, that is, the diameters of the front and rear ends of the inner wall of the rib plate 4 are consistent, stably supporting the traction motor stator core, the support rib plates 4 are arranged in the gradually changing cone section 3 and the installation and cooperation section 5, the rib plate 4 is attached to the inner wall of the gradually changing cone section 3, and a ventilation duct 11 is formed between the adjacent two rib plates 4, providing an air duct for the internal cooling air of the traction motor, the cooling air stably flows in parallel between the ventilation ducts, the front end of the rib plate 4 is adapted to abut against the inner edge of the large end surface of the guide cone section 2, the inner edge of the large end surface of the guide cone section 2 is 20 mm high, the rear end part of the installation and cooperation section 5 forms a flange ring part 8 inwardly, the rear end of the rib plate 4 is adapted to abut against the side surface of the flange ring part 8 of the installation and cooperation section 5, and the front part of all the rib plates 4 is correspondingly provided with a stator core positioning card 7 located at the same section, the front end of the stator core abuts against the stator core positioning card 7, and the stator core is stably clamped in the machine seat.

[0028] In use, the traction motor is installed into the base, the front end of the stator core abuts against the stator core positioning card 7, and the periphery of the stator core abuts against the rib plate 4; the base is installed on the mine dump truck together with the traction motor, in installation, the guide cone section 2 enters the installation position first, providing guidance for the base installation, reducing the difficulty of traction motor installation; after installation, the cooling air enters from the rear end face 6, passes through the air duct 11 between the rib plates 4, and moves forward uniformly and stably before and after the installation matching section 5 with the same inner diameter, then enters the gradually changing cone section 3, the inner diameter slowly changes and is smooth and stable, finally the cooling air separates from the air duct 11, enters the guide cone section 2, and the change degree of the inner diameter is larger than that of the gradually changing cone section 3 until the front end face 1, the change degree of the cross section of the traction motor air outlet is reduced, the local resistance coefficient of the base air path is reduced, the air resistance is reduced, and the problem of large air resistance of the existing structure is solved.

[0029] The scope of protection of the present application is not limited to the above specific embodiments, and the present application can have various modifications and alterations for those skilled in the art, and any modification, improvement and equivalent replacement within the concept and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A cone housing for a traction motor of a mining dump truck, characterized in that: The machine base body includes a guide cone section (2), a gradual change cone section (3), and a mounting matching section (5). The large end face outer edge of the guide cone section (2) is fixedly connected with the small end face of the gradual change cone section (3), and the large end face of the gradual change cone section (3) is fixedly connected with the front end face of the mounting matching section (5). The small end face of the guide cone section (2) is the front end face (1) of the machine base body, and the rear end face of the mounting matching section (5) is the rear end face (6) of the machine base body. The inner wall of the machine base body is uniformly provided with a plurality of rib plates (4) along the axial direction. The rib plates (4) are arranged in the gradual change cone section (3) and the mounting matching section (5). The front end of the rib plate (4) is adapted to abut against the inner edge of the large end face of the guide cone section (2), and the rear end of the mounting matching section (5) forms a flange ring portion (8) inwardly. The rear end of the rib plate (4) is adapted to abut against the side face of the flange ring portion (8) of the mounting matching section (5). The front part of all rib plates (4) is provided with a stator core positioning card (7) located in the same section.

2. A mine dump truck traction motor cone housing according to claim 1, characterized in that: The rib plates (4) are uniformly arranged with eight rib plates.

3. A mine dump truck traction motor cone housing according to claim 1, characterized in that: The front end outer peripheral portion of the mounting matching section (5) is formed with a mounting slope (12).

4. The cone housing for a mining dump truck traction motor according to claim 1, characterized in that: The taper angle of the guide cone section (2) is 10°.

5. A mine dump truck traction motor cone housing according to claim 1, characterized in that: The small end face outer diameter of the guide cone section (2) is φ618mm, and the inner diameter is φ568mm. The large end face outer diameter of the guide cone section (2) is φ660mm, and the inner diameter is φ610mm.

6. A mine dump truck traction motor cone housing according to claim 1, characterized in that: The length of the gradual change cone section (3) is 856mm. The small end face outer diameter of the gradual change cone section (3) is φ660mm, and the inner diameter is φ630mm. The large end face outer diameter of the gradual change cone section (3) is φ670mm, and the inner diameter is φ640mm.

7. A mine dump truck traction motor cone housing according to claim 1, characterized in that: The front end face (1) is uniformly provided with front mounting holes (9), and the rear end face (6) is uniformly provided with rear mounting holes (10).

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