Engineering machinery walking electric drive unit with upper rotating wheel

Abstract

The utility model relates to the technical field of engineering machinery driving systems, in particular to an engineering machinery walking electric driving unit with an upper rotating wheel, which comprises an upper rotating platform and a lower walking system positioned below the upper rotating platform, the lower walking system comprises a gearbox, a front axle and a rear axle, the front axle and the rear axle are positioned on two sides of the gearbox, and a walking motor is arranged on the upper rotating platform. The walking motor is connected with the gearbox through an upper transmission shaft. The front axle and the rear axle are connected with the gearbox through a first lower transmission shaft and a second lower transmission shaft respectively. The walking motor is provided with a high-low voltage line connecting part, a suspension connecting part and a water inlet and outlet connecting part, the water inlet and outlet connecting part comprises a water inlet nozzle connecting seat and a water outlet nozzle connecting seat, the suspension connecting part comprises two suspension table groups symmetrically arranged on the shell, and the high-low voltage line connecting part comprises a low voltage wire holder and a high voltage wire holder. According to the scheme, the walking motor is arranged on the upper rotary platform, and the problem that a complex adapter needs to be arranged between the walking chassis and the upper working platform can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery drive systems, and specifically provides an electric drive unit for engineering machinery with a slewing wheel. Background Art

[0002] With the rapid economic development and increasing environmental protection requirements, electrification has become an important way to save energy, reduce emissions and achieve green transformation in construction machinery. Electrification has taken the lead in achieving significant development and market breakthroughs in wheeled construction machinery. Electric wheeled construction machinery usually uses motors to drive the front and rear axles through gearboxes or directly. The overall tonnage of the machine is large, the operating environment is harsh, the driving conditions are complex, and the safety performance requirements for the braking system are high.

[0003] The braking system of traditional wheeled engineering machinery generally adopts full hydraulic braking. After modern wheeled engineering machinery is changed from hydraulic braking to electric braking, the original hydraulic motor-driven walking is changed to electric motor-driven walking. When the motor is still on the lower platform, the motor is connected to the gearbox. Since the components connected to the motor, such as the water tank, water pump, and controller connected to the high and low voltage lines, are all arranged on the upper platform, and there is relative rotation between the upper platform and the lower platform, the motor and the water tank, water pump, and controller connected to the high and low voltage lines must be connected through an adapter to keep their relative positions unchanged, resulting in the original adapter between the walking chassis and the working upper platform becoming more and more complicated.

[0004] Therefore, in order to solve the above problems, how to design a wheeled engineering machinery walking electric drive unit with a simple structure that does not require complex fixed connection components between the lower walking system and the upper part when the rotating platform rotates is an issue that needs to be solved urgently. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a walking electric drive unit with a slewing wheel for engineering machinery, which has a simple structure and does not need to set a complicated adapter structure, thus simplifying the production process, reducing production costs and improving work efficiency.

[0006] The utility model provides an electric drive unit for traveling engineering machinery with an upper slewing wheel, comprising an upper slewing platform and a lower traveling system located below the upper slewing platform, the lower traveling system comprising a gearbox and a front axle and a rear axle located on both sides of the gearbox, a traveling motor is arranged on the upper slewing platform, the traveling motor is connected to the gearbox through an upper transmission shaft, and the front axle and the rear axle are connected to the gearbox through a lower transmission shaft 1 and a lower transmission shaft 2 respectively; a high and low voltage line connection part, a suspension connection part and a water inlet and outlet connection part are arranged on the traveling motor.

[0007] Furthermore, the water inlet and outlet connection part includes a water inlet nozzle connection seat and a water outlet nozzle connection seat arranged on the shell of the travel motor. The water inlet nozzle connection seat and the water outlet nozzle connection seat are located on one side outer wall of the shell and are staggered.

[0008] Furthermore, the water inlet connection seat and the water outlet connection seat both include a connecting boss formed on the shell and a connecting pipe matched and connected to the connecting boss.

[0009] Furthermore, the connecting boss includes a boss seat connected to the shell and a boss plate arranged on the open end of the boss seat, and a connecting hole is opened on the boss plate; the connecting pipe includes a connecting plate matched and connected to the boss plate and a water nozzle arranged in the middle of the connecting plate, and the water nozzle is matched and connected with the connecting hole.

[0010] Furthermore, arc grooves are symmetrically provided on the connecting plate, and flexible connecting bolts connected to the connecting plate and the boss plate are provided in the arc grooves; fixed connecting bolts connected to the connecting plate and the boss plate are provided between the arc grooves.

[0011] Furthermore, a front cover and a rear cover are respectively provided at both ends of the shell of the travel motor, and the front cover is located at one end of the upper transmission shaft; the high and low voltage line connection part includes a low voltage terminal block and a high voltage terminal block arranged on the rear end cover, and a high voltage terminal box is connected to the high voltage terminal block.

[0012] Furthermore, the suspension connection portion includes two groups of suspension platforms symmetrically arranged on the shell, and each group of suspension platforms includes at least two suspension connection platforms arranged in the vertical direction.

[0013] Furthermore, a plurality of connection holes are provided on the suspension connection platform, and a weight-reducing groove is provided in the middle of the connection hole; and reinforcing ribs are provided between the side end of the suspension connection platform and the shell.

[0014] Furthermore, a hanging platform is provided on the shell, and the hanging platform is a conical platform structure with a diameter gradually decreasing from the shell toward the outside, and a hanging ear is provided on the hanging platform.

[0015] Furthermore, the lifting platform is located between the water inlet connection seat and the water outlet connection seat, and the low-voltage wiring seat and the high-voltage wiring seat are respectively located on the outside of the inlet and outlet water connection parts away from the lifting platform; the lifting platform, the water inlet connection seat, the water outlet connection seat, the low-voltage wiring seat and the high-voltage wiring seat are all integrated on the same side between the two groups of suspension platforms.

[0016] Compared with the prior art, the utility model can achieve the following beneficial effects: the utility model arranges the travel motor on the upper rotating platform, and directly connects the travel motor to the controllers of the water inlet and outlet, to the suspension, and to the high-voltage line and the low-voltage line on the upper rotating platform, without the need to set up a complicated adapter, thereby simplifying the product structure while ensuring the performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the electric drive unit provided according to an embodiment of the utility model;

[0018] Figure 2 The structure of the walking motor provided by the embodiment of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 3 It is a structural schematic diagram of a water inlet connection seat or a water outlet connection seat provided according to an embodiment of the utility model;

[0020] Figure 4 The structure of the walking motor provided by the embodiment of the utility model is shown in FIG. Figure 2 .

[0021] The accompanying drawings include: upper slewing platform 1, lower walking system 2, gearbox 3, front axle 4, rear axle 5, walking motor 6, upper transmission shaft 7, lower transmission shaft one 8, lower transmission shaft two 9, water inlet nozzle connecting seat 10, water outlet nozzle connecting seat 11, boss seat 12, boss plate 13, connecting plate 14, water nozzle 15, arc groove 16, flexible connecting bolt 17, fixed connecting bolt 18, front end cover 19, rear end cover 20, low voltage terminal block 21, high voltage terminal block 22, high voltage terminal box 23, suspension connecting platform 24, connecting hole 25, weight reduction groove 26, reinforcing rib 27, lifting platform 28, lifting ear 29, shell 30. DETAILED DESCRIPTION

[0022] In the following, reference will be made to the Figure 1-4 Describe the embodiment of the utility model. In the following description, the same modules are represented by the same reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, the detailed description thereof will not be repeated.

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following Figure 1-4 It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation on the present invention.

[0024] A walking electric drive unit for engineering machinery with a slewing wheel, such as Figure 1As shown, it includes an upper rotating platform 1 and a lower walking system 2 located below the upper rotating platform 1. The lower walking system 2 includes a gearbox 3 and a front axle 4 and a rear axle 5 located on both sides of the gearbox 3. A walking motor 6 is provided on the upper rotating platform 1. The walking motor 6 is connected to the gearbox 3 through an upper transmission shaft 7. The front axle 4 and the rear axle 5 are connected to the gearbox 3 through a lower transmission shaft 1 8 and a lower transmission shaft 2 9, respectively. The gearbox 3 is fixed on the walking chassis and has no parts that need to be connected to the upper rotating platform 1. Therefore, the water circuit, high-voltage circuit, and low-voltage circuit of the walking motor 6 can be directly connected to the above parts without intermediate switching. The walking motor 6 is fixed on the upper rotating platform 1 and keeps a fixed position with other parts on the upper rotating platform 1 (such as batteries, motor controllers, cooling systems, etc.), which is convenient for wiring harness pipeline connection.

[0025] The travel motor 6 is fixed on the upper revolving platform 1, and the torque and speed are transmitted to the gearbox 3 through the upper transmission shaft 7. The gearbox 3 is a right-angle gearbox 3. The gearbox 3 then transmits the torque and speed to the front axle 4 through the lower transmission shaft 1 8, and transmits it to the rear axle 5 through the lower transmission shaft 2 9, and finally to the front and rear wheels. When the upper revolving platform 1 rotates, the lower travel system has no parts that need to be fixedly connected to the upper part, and no intermediate adapter is required, which simplifies the structure and ensures the performance.

[0026] The travel motor 6 is provided with a high and low voltage line connection part, a suspension connection part and a water inlet and outlet connection part. Figure 2 , Figure 3 As shown, the water inlet and outlet connection part includes a water inlet nozzle connection seat 10 and a water outlet nozzle connection seat 11 arranged on the shell 30 of the walking motor 6. The water inlet nozzle connection seat 10 and the water outlet nozzle connection seat 11 are located on the outer wall of one side of the shell 30 and are staggered. The water inlet nozzle connection seat 10 and the water outlet nozzle connection seat 11 can be arranged at the upper part or the lower part as needed. In this embodiment, the water inlet nozzle connection seat 10 is arranged at the upper part, and the water outlet nozzle connection seat 11 is arranged at the lower part of the water inlet nozzle connection seat 10. The water inlet nozzle connection seat 10 is used for water intake of the walking motor 6, and the water outlet nozzle connection seat 11 is used for water discharge of the walking motor 6.

[0027] The water inlet connection seat 10 and the water outlet connection seat 11 both include a connecting boss formed on the housing 30 and a connecting pipe matched and connected to the connecting boss. Taking the water outlet connection seat 11 as an example, Figure 3As shown, the communication boss includes a boss seat 12 connected to the housing 30 and a boss plate 13 disposed on the open end of the boss seat 12, a communication hole is provided on the boss plate 13, and the communication pipe includes a communication plate 14 matched and connected to the boss plate 13 and a water nozzle 15 disposed in the middle of the communication plate 14, and the water nozzle 15 is matched and connected with the communication hole. The communication plate 14 is symmetrically provided with arc grooves 16, and flexible connecting bolts 17 connected to the communication plate 14 and the boss plate 13 are provided in the arc grooves 16, and fixed connecting bolts 18 connected to the communication plate 14 and the boss plate 13 are provided between the arc grooves 16. When the positions of the connecting plate 14 and the boss plate 13 correspond well, both the fixed connecting bolts 18 and the flexible connecting bolts 17 are locked. When the position of the connecting plate 14 needs to be adjusted, the fixed connecting bolts 18 are loosened and the connecting plate 14 is rotated. At this time, the connecting plate 14 moves along the flexible connecting bolts 17 through the arc groove 16. When the position is moved into place, the fixed connecting bolts 18 are locked to adjust the connection position of the connecting plate 14 without removing the entire water outlet connection seat 11.

[0028] The housing 30 of the travel motor 6 is provided with a front cover 19 and a rear cover 20 at both ends, the front cover 19 is located at one end of the upper transmission shaft 7, and the rear cover 20 is located at the end away from the upper transmission shaft 7. Figure 2 As shown, the high and low voltage line connection part includes a low voltage terminal block 21 and a high voltage terminal block 22 arranged on the rear end cover 20, and the high voltage terminal block 22 is connected to a high voltage terminal box 23, and the high voltage terminal box 23 is provided with a motor three-phase high voltage line structure.

[0029] The suspension connection portion includes two groups of suspension platforms symmetrically arranged on the housing 30, each group of suspension platforms includes at least two suspension connection platforms 24 arranged vertically. In this embodiment, each group of suspension platforms includes two suspension connection platforms 24, and a total of four suspension connection platforms 24 are included. Figure 4 As shown, a plurality of connection holes 25 are provided on the suspension connection platform 24, which are connected to the frame shock absorber through the connection holes 25. A weight reduction groove 26 is opened in the middle of the connection hole 25, and the surrounding of the weight reduction groove 26 extends to between the connection holes 25 to increase the volume of the weight reduction groove 26, further reduce weight and save materials, and achieve lightweight. A reinforcing rib 27 is provided between the side end of the suspension connection platform 24 and the shell 30 to improve the connection stability of the suspension connection platform 24.

[0030] The housing 30 is provided with a hoisting platform 28, which is a conical platform structure that gradually decreases in diameter from the housing 30 toward the outside, which is convenient for demoulding. The hoisting platform 28 is provided with a lifting lug 29 to facilitate the hoisting, installation and removal of the travel motor 6. The hoisting platform 28 is located between the water inlet connection seat 10 and the water outlet connection seat 11. The low-voltage wiring seat 21 and the high-voltage wiring seat 22 are respectively located on the outside of the water inlet and outlet connection parts away from the hoisting platform 28. The hoisting platform 28, the water inlet connection seat 10, the water outlet connection seat 11, the low-voltage wiring seat 21 and the high-voltage wiring seat 22 are all integrated on the same side between the two sets of suspension platform groups, which is convenient for wiring and can prevent interference.

[0031] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0032] The above specific implementation methods of the utility model do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A traveling electric drive unit for an engineering machinery with a slewing wheel, characterized in that: The invention comprises an upper rotating platform (1) and a lower walking system (2) located below the upper rotating platform (1); the lower walking system (2) comprises a gearbox (3) and a front axle (4) and a rear axle (5) located on both sides of the gearbox (3); a walking motor (6) is provided on the upper rotating platform (1); the walking motor (6) is connected to the gearbox (3) via an upper transmission shaft (7); the front axle (4) and the rear axle (5) are connected to the gearbox (3) via a lower transmission shaft 1 (8) and a lower transmission shaft 2 (9), respectively; and a high-low voltage line connection part, a suspension connection part and a water inlet and outlet connection part are provided on the walking motor (6).

2. The electric drive unit for traveling engineering machinery with a rotating wheel as claimed in claim 1, characterized in that: The water inlet and outlet connection portion comprises a water inlet nozzle connection seat (10) and a water outlet nozzle connection seat (11) which are arranged on the housing (30) of the travel motor (6); the water inlet nozzle connection seat (10) and the water outlet nozzle connection seat (11) are located on an outer wall of one side of the housing (30) and are staggered.

3. The electric drive unit for traveling engineering machinery with a rotating wheel as claimed in claim 2, characterized in that: The water inlet connection seat (10) and the water outlet connection seat (11) both comprise a communication boss formed on the housing (30) and a communication pipe matched and connected to the communication boss.

4. The electric drive unit for traveling engineering machinery with a rotating wheel as claimed in claim 3, characterized in that: The communication boss comprises a boss seat (12) connected to the housing (30) and a boss plate (13) disposed on the open end of the boss seat (12), wherein a communication hole is formed on the boss plate (13); the communication pipe comprises a communication plate (14) matched and connected to the boss plate (13) and a water nozzle (15) disposed in the middle of the communication plate (14), wherein the water nozzle (15) matches and communicates with the communication hole.

5. The electric drive unit for traveling engineering machinery with a rotating wheel as claimed in claim 4, characterized in that: The connecting plate (14) is symmetrically provided with arc-shaped grooves (16), and flexible connecting bolts (17) connected to the connecting plate (14) and the boss plate (13) are provided in the arc-shaped grooves (16); fixed connecting bolts (18) connected to the connecting plate (14) and the boss plate (13) are provided between the arc-shaped grooves (16).

6. The electric drive unit for traveling engineering machinery with a rotating wheel as claimed in claim 5, characterized in that: A front cover (19) and a rear cover (20) are respectively provided at both ends of the housing (30) of the travel motor (6), and the front cover (19) is located at one end of the upper transmission shaft (7); the high- and low-voltage line connection portion comprises a low-voltage wiring seat (21) and a high-voltage wiring seat (22) provided on the rear cover (20), and a high-voltage wiring seat (22) is connected to a high-voltage wiring box (23).

7. The electric drive unit for traveling engineering machinery with a rotating wheel as claimed in claim 6, characterized in that: The suspension connection portion comprises two groups of suspension platforms symmetrically arranged on the housing (30), and each group of suspension platforms comprises at least two suspension connection platforms (24) arranged vertically.

8. The electric drive unit for traveling engineering machinery with a rotating wheel as claimed in claim 7, characterized in that: The suspension connection platform (24) is provided with a plurality of connection holes (25), and a weight-reducing groove (26) is provided in the middle of the connection hole (25); and a reinforcing rib (27) is provided between the side end of the suspension connection platform (24) and the housing (30).

9. The electric drive unit for traveling engineering machinery with a rotating wheel as claimed in claim 8, characterized in that: The shell (30) is provided with a hanging platform (28), the hanging platform (28) is a conical platform structure with a diameter gradually decreasing from the shell (30) toward the outside, and the hanging platform (28) is provided with a hanging ear (29).

10. The electric drive unit for traveling engineering machinery with a rotating wheel as claimed in claim 9, characterized in that: The hoisting platform (28) is located between the water inlet connection seat (10) and the water outlet connection seat (11); the low-voltage wiring seat (21) and the high-voltage wiring seat (22) are respectively located on the outside of the water inlet and outlet connection parts away from the hoisting platform (28); the hoisting platform (28), the water inlet connection seat (10), the water outlet connection seat (11), the low-voltage wiring seat (21) and the high-voltage wiring seat (22) are all integrated on the same side between the two sets of suspension platform groups.

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