Motor power bogie of new energy tractor and tractor

Abstract

The utility model discloses a motor power bogie of a new energy tractor, which is mounted below a tractor frame (100) of the tractor and comprises an I-shaped frame body (1), four wheels (2), two permanent magnet coaxial traction alternating current motors (3) and four motor suspension mechanisms (4). The center of a straight arm of the I-shaped frame body (1) is connected with a frame (100); the left side and the right side of the straight arm are each provided with a permanent magnet coaxial traction alternating current motor (3) in a hoisting mode through a motor suspension mechanism (4). Output main shafts at the two ends of the permanent magnet coaxial traction alternating current motor (3) are respectively provided with a wheel (2); and the frame (100) is provided with power supply equipment which is connected with the permanent magnet coaxial traction alternating current motor (3) and provides working electric energy for the permanent magnet coaxial traction alternating current motor (3). Clean new energy power transmission is adopted, potential safety hazards are reduced, waste gas emission is reduced, the environment is protected, the structure is simple, and installation is convenient.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical technology, specifically relates to the technical field of mechanical tractors, and in particular relates to a motor-powered bogie of a new energy tractor and a tractor. Background Art

[0002] At present, most tractors running on railways are powered by internal combustion diesel engines, and the power bogie 800 usually adopts a "hydraulic motor" structure. Figure 1 and 2 The figure shows the power bogie structure of a conventional internal combustion tractor power system. The power bogie 800 is mounted below the vehicle frame 100. A diesel engine 200, transfer case 300, hydraulic pump 400, and generator set 500 are mounted above the vehicle frame 100. The diesel engine 200 provides power. Specifically, the diesel engine 200 is connected to the transfer case 300, which in turn is connected to the hydraulic pump 400 and the generator set 500. The hydraulic pump 400 is connected to the power bogie's hydraulic motor 600, which is then connected to the gearbox 700. The gearbox 700 is mounted on the tractor's axle 900, driving the wheels 2 and thus controlling the tractor's movement. Power bogies using hydraulic motors present a significant risk of hydraulic oil leakage due to the high hydraulic oil pressure and numerous pipelines in the hydraulic system. Leaking hydraulic oil onto the rails can cause brake failure on passing vehicles, posing a significant safety hazard. Furthermore, diesel engines emit exhaust gases, polluting the environment. Summary of the Invention

[0003] The purpose of the utility model is to provide a motor-powered bogie and tractor for a new energy tractor, which adopts clean new energy electric transmission, reduces safety hazards, reduces exhaust emissions, protects the environment, and has a simple structure and is easy to install.

[0004] The technical solutions provided by this utility model are as follows:

[0005] A motor-powered bogie for a new energy tractor, mounted below a frame 100 of the tractor, comprises an I-shaped frame 1, four wheels 2, two permanent magnet coaxial traction AC motors 3, and four motor suspension mechanisms 4;

[0006] The center of the straight arm of the I-shaped frame 1 is connected to the vehicle frame 100; a permanent magnet coaxial traction AC motor 3 is hoisted on the left and right sides of the straight arm through a motor suspension mechanism 4;

[0007] The output spindles at both ends of the permanent magnet coaxial traction AC motor 3 are respectively installed with a wheel 2;

[0008] The vehicle frame 100 is provided with a power supply device connection and provides working power to the permanent magnet coaxial traction AC motor 3.

[0009] The motor suspension mechanism 4 includes a fixed suspension seat 41, a suspension rod 42, two clamping plates 43, two elastic pads 44 and a motor mounting seat 45;

[0010] The inner end of the fixed hanger 41 is fixed to the straight arm of the I-shaped frame 1, and the outer end is hingedly connected to the upper end of the hanger 42 through a pin 46; the outer end of the motor mounting base 45 is fixed to the permanent magnet coaxial traction AC motor 3;

[0011] A clamping plate 43 , an elastic pad 44 , the inner end of a motor mounting seat 45 , another elastic pad 44 and another clamping plate 43 are sequentially installed at the lower portion of the suspension rod 42 ; the lower end of the suspension rod 42 is fixed by a suspension rod nut 47 .

[0012] The suspension rod nut 47 is provided with an anti-loosening mechanism.

[0013] The power supply device includes a power battery pack 5; or,

[0014] The power supply equipment includes a power battery pack 5 and a starting battery pack 6.

[0015] A new energy tractor comprises a frame 100, with a motor-powered bogie of the new energy tractor mounted on the front and rear sides below the frame 100.

[0016] The frame 100 is symmetrical in structure, and is formed by welding two end plates 101 and two side beams 102 into a square frame; two intermediate beams 103 are symmetrically welded in the middle of the horizontal section; two bolster beams 104 are symmetrically welded on both sides of the horizontal section; a traction beam 105 is welded in the longitudinal center between the bolster beam 104 and the end plate 101; a reinforcement beam 106 is welded obliquely between the bolster beam 104 and the side beam 102; and two transverse auxiliary beams 107 are symmetrically welded in the longitudinal direction between the two bolster beams 104.

[0017] The motor-powered bogie of the new energy tractor is installed below the bolster 104 .

[0018] A driver's cab 7, an electric control room 8, an auxiliary room 9, a power battery pack 5 and an air source room 10 are arranged above the vehicle frame 100;

[0019] The driver's cab 7 is located at the front, and the electric control room 8, auxiliary room 9, power battery pack 5 and air source room 10 are located at the middle and rear;

[0020] Handrails 11 are provided on the peripheries of the electric control room 8 , the auxiliary room 9 , the power battery pack 5 and the wind source room 10 .

[0021] A brake valve assembly 12 and a starting battery pack 6 are provided at the front lower portion of the vehicle frame 100 ; a tool box 13 is provided at the middle and rear portion.

[0022] The vehicle frame 100 is provided with coupler assemblies 14 at both ends.

[0023] It can be seen from the technical solution provided by the above-mentioned utility model that the motor-powered bogie and tractor of a new energy tractor provided by the embodiment of the utility model adopt clean new energy electric power transmission, reduce safety hazards, reduce exhaust emissions, protect the environment, and at the same time have a simple structure and are easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a schematic diagram of the main structure of the power bogie and tractor of the prior art;

[0026] Figure 2 It is a schematic diagram of the top view of the power bogie in the prior art;

[0027] Figure 3 This is a schematic diagram of the main structure of the motor-powered bogie of a new energy tractor provided in the first embodiment of the present utility model;

[0028] Figure 4 This is a schematic top view of the structure of the motor-powered bogie of a new energy tractor provided in the first embodiment of the present utility model;

[0029] Figure 5 This is a left-side structural schematic diagram of a motor-powered bogie of a new energy tractor provided in the first embodiment of the present utility model;

[0030] Figure 6 A schematic structural diagram of a motor suspension mechanism of a motor-powered bogie of a new energy tractor provided in the first embodiment of the present utility model;

[0031] Figure 7 This is a schematic diagram of the main structure of a new energy tractor provided in the second embodiment of the present utility model;

[0032] Figure 8 This is a schematic top view of the new energy tractor provided in the second embodiment of the present utility model;

[0033] Figure 9 This is a left-side structural schematic diagram of a new energy tractor provided in Example 2 of the present utility model;

[0034] Figure 10 This is a schematic diagram of the main structure of the frame of a new energy tractor provided in the second embodiment of the present utility model;

[0035] Figure 11 A schematic top view of the structure of the frame of a new energy tractor provided in the second embodiment of the present utility model;

[0036] Figure 12 This is a left-side structural diagram of the frame of a new energy tractor provided in the second embodiment of the present utility model; DETAILED DESCRIPTION

[0037] The following is a clear and complete description of the technical solutions in the embodiments of the present invention, in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0038] First, the following terms may be used in this article:

[0039] The term “and / or” means that either or both of them can be realized at the same time. For example, X and / or Y includes both “X” or “Y” and “X and Y”.

[0040] The terms "include," "comprises," "contains," "has," or other similar expressions should be interpreted as non-exclusive. For example, "including certain technical features (such as raw materials, components, ingredients, carriers, dosage forms, materials, dimensions, parts, components, mechanisms, devices, steps, procedures, methods, reaction conditions, processing conditions, parameters, algorithms, signals, data, products, or manufactured articles, etc.) should be interpreted as including not only the technical features explicitly listed, but also other technical features known in the art that are not explicitly listed.

[0041] The term "consisting of" excludes any technical features not explicitly listed. If used in a claim, this term renders the claim closed, excluding any technical features other than those explicitly listed, except for conventional impurities associated with them. If this term appears only in a clause of a claim, it limits only the elements explicitly listed in that clause; elements listed in other clauses are not excluded from the claim as a whole.

[0042] The term "parts by mass" refers to the mass ratio of multiple components. For example, if component X is x parts by mass and component Y is y parts by mass, then the mass ratio of component X to component Y is x:y. One part by mass can represent any mass, for example, 1 kg or 3.1415926 kg. The sum of the parts by mass of all components is not necessarily 100 parts; it can be greater than, less than, or equal to 100 parts. Unless otherwise specified, parts, ratios, and percentages herein are by mass.

[0043] Unless otherwise specified or limited, the terms "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this document based on specific circumstances.

[0044] When concentration, temperature, pressure, size or other parameters are expressed in the form of a numerical range, the numerical range should be understood to specifically disclose all ranges formed by the pairing of any upper limit, lower limit, or preferred value within the numerical range, regardless of whether the range is explicitly stated. For example, if a numerical range of "2 to 8" is stated, the numerical range should be interpreted as including ranges of "2 to 7," "2 to 6," "5 to 7," "3 to 4 and 6 to 7," "3 to 5 and 7," "2 and 5 to 7," etc. Unless otherwise specified, the numerical ranges stated herein include both their endpoints and all integers and fractions within the numerical range.

[0045] The terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings and are only for the convenience and simplification of description, and do not explicitly or implicitly indicate that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation to this document.

[0046] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0047] Example 1

[0048] like Figures 3 to 5As shown, a motor-powered bogie of a new energy tractor is installed under the frame 100 of the tractor. The structure includes an I-frame body 1, four wheels 2, two permanent magnet coaxial traction AC motors 3 and four motor suspension mechanisms 4; the I-frame body 1 is centrally symmetrical and has an "I" shape, and the center of the straight arm of the I-frame body 1 is connected to the frame 100; specifically, it is hingedly connected to the frame 100 through a center pin 15. The connection method of this center pin is the same as the connection method of the existing power bogie and the frame 100, which will not be repeated here.

[0049] The left and right sides of the straight arm of the I-shaped frame 1 are respectively hoisted with a permanent magnet coaxial traction AC motor 3 through two motor suspension mechanisms 4 to ensure that the motor is firmly installed, stable and reliable. Figure 6 As shown, the motor suspension mechanism 4 comprises a fixed hanger 41, a suspension rod 42, two clamping plates 43, two elastic pads 44, and a motor mounting base 45. The inner end of the fixed hanger 41 is fixed to the straight arm of the I-shaped frame 1 and can be fixed by welding. The outer end of the fixed hanger 41 is hingedly connected to the upper end of the suspension rod 42 via a pin 46. Specifically, the outer end of the fixed hanger 41 has an axial hole, and the upper end of the suspension rod 42 also has an axial hole. The pin 46 passes through the axial holes of these two parts, and the two ends are fixed with nuts and secured with a cotter pin.

[0050] The outer end of the motor mounting base 45 is fixed to the permanent magnet coaxial traction AC motor 3; specifically, the outer end of the motor mounting base 45 can be connected to the reserved mounting hole on the permanent magnet coaxial traction AC motor 3 through a bolt.

[0051] like Figure 6 As shown, the lower portion of the suspension rod 42 is mounted in sequence with a clamping plate 43, an elastic pad 44, the inner end of a motor mounting base 45, another elastic pad 44, and another clamping plate 43. The lower end of the suspension rod 42 is threaded and secured by a suspension rod nut 47. The suspension rod nut 47 is provided with an anti-loosening mechanism, typically using a cotter pin. The clamping plate 43 serves to clamp and protect the elastic pad 44, which in turn serves to reduce shock.

[0052] The output spindles at both ends of the permanent magnet coaxial traction AC motor 3 are each mounted on a wheel 2. The rotor of the permanent magnet coaxial traction AC motor 3 is directly connected to the tractor wheels 2, resulting in high transmission efficiency. A 160kW permanent magnet constant torque, maintenance-free motor can be selected. The motor is water-cooled and connected to the traction motor cooling system to meet the cooling requirements of a 750-ton traction load. Furthermore, a coil spring suspension mechanism 16 is installed between the outer end of the output spindle of the permanent magnet coaxial traction AC motor 3 extending beyond the wheel 2 and the transverse arm of the vehicle frame 100. This coil spring suspension mechanism 16 functions as a vibration damper. The structure and application of this coil spring suspension mechanism 16 are similar to those used in existing power bogies and will not be further described. Furthermore, a rubber-stacked side bearing suspension mechanism 17 is installed at the connection between the transverse arm and the straight arm of the vehicle frame 100 and the I-beam body 1. This rubber-stacked side bearing suspension mechanism 17 supports the entire weight of the onboard equipment, ensuring excellent dynamic performance of the tractor. The structure and application of this rubber-stacked side bearing suspension mechanism 17 are similar to those used in existing power bogies and will not be further described. At the same time, a unit brake 19 is also installed in the lower part of the I-frame body 1 for braking.

[0053] The frame 100 is provided with a power supply device connection and provides working power for the permanent magnet coaxial traction AC motor 3. The essential component is the power battery pack 5, which uses a lithium iron carbonate battery pack. It is the power source for the entire machine and is a core component. It needs to reserve a large amount of power to meet the requirements of use. This patent also has a starting battery pack 6, which provides a DC24V power supply and can be used to activate the BMS power management system of the power battery pack 5 and other low-voltage electrical equipment of the tractor. After activating the BMS power management system of the power battery pack 5, the power battery pack 5 is responsible for providing power and electricity, and after reducing the voltage, it can charge the starting battery pack 6.

[0054] In this example, a sand spreading device 18 is provided at one or both ends of the horizontal arm of the vehicle frame 100. The purpose of the sand spreading device 18 is to prevent wheel slippage in rainy or snowy weather, as tractors are prone to slipping when climbing hills. Sanding the track increases the wheel-rail adhesion coefficient and prevents wheel slippage. The method is similar to that of existing sand spreading devices and will not be further described.

[0055] Example 2

[0056] like Figures 7 to 9 As shown, a new energy tractor comprises a frame 100, and a motor-powered bogie of the new energy tractor described in Example 1 is respectively installed at the front and rear of the frame 100.

[0057] like Figures 10 to 12As shown, the vehicle frame 100 is symmetrically constructed, consisting of two end plates 101 and two side beams 102 welded together to form a square frame. Two intermediate beams 103 are symmetrically welded in the middle of the frame. Two bolsters 104 are symmetrically welded on either side of the frame. A traction beam 105 is welded longitudinally and centrally between the bolster 104 and the end plates 101. A reinforcement beam 106 is welded diagonally between the bolster 104 and the side beams 102. Two transverse auxiliary beams 107 are symmetrically welded longitudinally between the two bolsters 104. The motor-powered bogie of the new energy tractor is mounted below the bolsters 104. In this example, the side beams 102, transverse auxiliary beams 107, reinforcement beam 106, and intermediate beam 103 are all constructed from 440mm*300mm*18mm high-strength H-section steel. The traction beam 1105 and bolster 104 are welded together from high-strength thick plate. The vehicle frame 100 features a simple structure, high strength, and is easy to manufacture.

[0058] like Figures 7 to 9 As shown, the new energy tractor uses an external corridor-style body supported by a frame, with a total weight of approximately 60 tons. Coupler assemblies 14 are installed at both ends of the frame 100. Coupler assemblies 14 use universal couplers for docking with related vehicles. For example, coupler No. 17 can precisely dock with a C70 truck.

[0059] Above the vehicle frame 100 are located a driver's cab 7, an electrical control room 8, an auxiliary room 9, a power battery pack 5, and a wind source room 10. The driver's cab 7 is located at the front and contains an operating console 71 and two driver and passenger seats 72. The rear wall is equipped with a left door 73, a middle door 74, and a right door 75. The operating console 71 houses the brakes on the left side for easy operation by the driver and passenger. To the right of the console 71 is an office platform. The console 71 also houses the display screens for the front and rear video surveillance systems of the tractor, allowing the driver and passenger to observe real-time conditions at the front and rear ends while driving, ensuring safety. The driver and passenger can activate the tractor with a key and control the handlebars for driving.

[0060] The electric control room 8, auxiliary room 9, power battery pack 5 and air source room 10 are arranged in the middle and rear part; the electric control room 8 is arranged behind the driver's cab 7 and is entered and exited through the middle door 74. An integrated control cabinet 81 is arranged in the electric control room 8, and electrical components such as contactors and relays are arranged in the integrated control cabinet 81 for controlling all electrical equipment of the tractor.

[0061] The auxiliary room 9 is located behind the electrical control room 8 and is accessible via the left and right doors 73 and 75 on either side. The auxiliary room 9 consists of side walls, end walls, and a roof, all bolted together to facilitate assembly and maintenance. The side walls are equipped with double-opening inspection doors and shutters. Within the auxiliary room 9 are a coaxial traction motor control cabinet 91, two auxiliary converter cabinets 92, and a traction motor cooling system 93. The coaxial traction motor control cabinet 91 houses four standard motor controllers, which convert DC power to AC power and are connected to the control junction boxes 31 of the permanent magnet coaxial traction AC motors 3. These controllers power the four permanent magnet coaxial traction AC motors 3, controlling their forward, reverse, and stop motions. The auxiliary converter cabinet 92 also converts DC power to AC power, providing power to other electrical equipment in the tractor. The traction motor cooling system 93 is connected to the cooling water inlet and outlet 32 ​​of the permanent magnet coaxial traction AC motor 3 through a pipeline, and can balance the heat generated by the permanent magnet coaxial traction AC motor 3 during operation.

[0062] The power battery pack 5 is arranged behind the auxiliary room 9. The power battery pack 5 can adopt a lithium iron carbonate battery pack with a nominal capacity of 635.9kWh, a nominal voltage of 691.2V, and a nominal current of 920Ah. The power battery pack has its own BMS power management system, thermal protection system and fire protection system, providing sufficient and stable power for the tractor. The technology is mature and the performance is reliable.

[0063] The air source room 10 is located behind the power battery pack 5 and consists of side walls, end walls, and a top cover. The side walls, end walls, and the top cover are all bolted together for easy assembly and maintenance. The side walls are provided with double doors and shutters for maintenance. The room is equipped with a standard air compressor 1001, an air storage tank 1002, and an air freeze dryer 1003 to meet the needs of traction, braking, and auxiliary air.

[0064] The outer peripheries of the electric control room 8, auxiliary room 9, power battery pack 5 and wind source room 10 are provided with handrails 11. An outer corridor structure is formed, and entry and exit are through the left door 73 and the right door 75.

[0065] The front portion of the lower portion of the vehicle frame 100 is provided with a brake valve assembly 12 and a starting battery pack 6; the middle and rear portion is provided with a tool box 13. The brake valve assembly 12 and the starting battery pack 6 adopt universal standard specifications, with mature technology and reliable performance.

[0066] advantage:

[0067] 1. The motor-powered bogie of the new energy tractor has a reasonable and compact structure, and the frame 100 is made of high-strength standard H-shaped steel, which is easy to manufacture.

[0068] 2. The motor-powered bogie of the new energy tractor is powered by a lithium iron carbonate power battery pack, which is pollution-free and environmentally friendly.

[0069] 3. The motor-powered bogie of the new energy tractor adopts a permanent magnet coaxial traction AC motor. The rotor of the motor is directly connected to the wheels of the tractor, with high transmission efficiency and simple structure.

[0070] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A motor-powered bogie for a new energy tractor, mounted below a frame (100) of the tractor, characterized in that: It comprises an I-shaped frame (1), four wheels (2), two permanent magnet coaxial traction AC motors (3) and four motor suspension mechanisms (4); The center of the straight arm of the I-shaped frame (1) is connected to the vehicle frame (100); a permanent magnet coaxial traction AC motor (3) is hoisted on the left and right sides of the straight arm respectively through a motor suspension mechanism (4); The output main shafts at both ends of the permanent magnet coaxial traction AC motor (3) are respectively mounted with a wheel (2); The vehicle frame (100) is provided with a power supply device for connection and provides working power for the permanent magnet coaxial traction AC motor (3).

2. The motor-powered bogie of a new energy tractor according to claim 1, characterized in that: The motor suspension mechanism (4) comprises a fixed suspension seat (41), a suspension rod (42), two clamping plates (43), two elastic pads (44) and a motor mounting seat (45); The inner end of the fixed hanger (41) is fixed to the straight arm of the I-shaped frame (1), and the outer end is hingedly connected to the upper end of the hanger (42) through a pin (46); the outer end of the motor mounting seat (45) is fixed to the permanent magnet coaxial traction AC motor (3); The lower part of the suspension rod (42) is sequentially installed with a clamping plate (43), an elastic pad (44), the inner end of the motor mounting seat (45), another elastic pad (44) and another clamping plate (43); the lower end of the suspension rod (42) is fixed by a suspension rod nut (47).

3. The motor-powered bogie of the new energy tractor according to claim 2, characterized in that: The suspension rod nut (47) is provided with an anti-loosening mechanism.

4. The motor-powered bogie of a new energy tractor according to claim 1 or 2, characterized in that: The power supply device includes a power battery pack (5); or, The power supply equipment includes a power battery pack (5) and a starting battery pack (6).

5. A new energy tractor, characterized in that: The vehicle comprises a vehicle frame (100), wherein a motor-powered bogie of a new energy tractor according to any one of claims 1 to 4 is respectively installed at the front and rear sides below the vehicle frame (100).

6. The new energy tractor according to claim 5, characterized in that: The frame (100) is symmetrical in structure, and is formed into a square frame by welding two end plates (101) and two side beams (102); two middle beams (103) are symmetrically welded in the middle of the horizontal part; two bolster beams (104) are symmetrically welded on both sides of the horizontal part; a traction beam (105) is welded in the longitudinal center between the bolster beam (104) and the end plate (101); a reinforcement beam (106) is welded obliquely between the bolster beam (104) and the side beam (102); and two transverse auxiliary beams (107) are symmetrically welded in the longitudinal direction between the two bolster beams (104); The motor-powered bogie of the new energy tractor is installed below the bolster (104).

7. The new energy tractor according to claim 5, characterized in that: A driver's cab (7), an electric control room (8), an auxiliary room (9), a power battery pack (5) and an air source room (10) are arranged above the vehicle frame (100); The driver's cab (7) is located at the front, and the electric control room (8), auxiliary room (9), power battery pack (5) and air source room (10) are located at the middle and rear. Handrails (11) are provided on the peripheries of the electric control room (8), the auxiliary room (9), the power battery pack (5) and the wind source room (10).

8. The new energy tractor according to claim 5, characterized in that: A brake valve group (12) and a starting battery group (6) are provided at the front lower portion of the vehicle frame (100); and a tool box (13) is provided at the middle and rear portion.

9. The new energy tractor according to claim 5, characterized in that: Coupler assemblies (14) are provided at both ends of the vehicle frame (100).

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