CN216184430U

CN216184430U - Wheel excavator driving system

Info

Publication number: CN216184430U
Application number: CN202122977464.6U
Authority: CN
Inventors: 赵森军; 王聪聪; 贺小卒
Original assignee: Burleton Technology Co ltd
Current assignee: Bureton Technology Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-04-05
Anticipated expiration: 2031-11-30

Abstract

The utility model discloses a wheel type excavator driving system, and belongs to the technical field of wheel type excavators. The walking mechanism comprises a driving motor, wherein the driving motor is arranged on a rotary platform, an output shaft of the driving motor is connected with a transmission shaft, the transmission shaft penetrates through a rotary joint and is connected with a transmission box, the transmission box is arranged on a walking chassis, and the transmission box is respectively connected with a front axle and a rear axle through transmission shafts at two ends. The hydraulic drive system of the conventional wheel type excavator is changed, and the electric drive system is adopted, so that the characteristics of high rotating speed, large torque, low cost and the like of a drive motor are utilized to replace the output of an engine, a gearbox and an upper transmission box are further cancelled, only two-stage transmission of the lower transmission box and a front axle and a rear axle is reserved, the overall transmission efficiency reaches 81 percent, 16 points are improved compared with that of the traditional wheel type excavator, and the noise and the failure rate are reduced after the drive system is simplified.

Description

Wheel excavator driving system

Technical Field

The utility model relates to the technical field of wheel type excavators, in particular to a wheel type excavator driving system.

Background

A wheeled excavator can be generally considered as 3-part composition: working device, rotary platform, walking chassis. An engine, a hydraulic system, an electrical system, a heat dissipation system, an operating system and even a working device of the excavator are all arranged on a rotary platform, a rotary joint is arranged between the rotary platform and a walking chassis, and a walking motor is arranged on the walking chassis.

The conventional fuel oil is still used as a main part of the wheel type excavator in the existing market, in the aspect of vehicle driving technology, the walking is still realized by adopting a multi-stage transmission mode of a gearbox, an upper transmission box, a lower transmission box and a front axle and a rear axle, the efficiency of the multi-stage transmission in an energy transmission process is low, energy waste is caused, the structure is complex, and the noise of the vehicle is high and the failure rate is high. At present, a few electric wheel type excavators exist on the market, but the traditional technical scheme is still kept on the driving technology, and no new technology appears.

Therefore, in view of the above problems, it is necessary to propose a further solution to solve at least one of the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a wheel excavator driving system to overcome the defects in the prior art.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

the utility model provides a wheeled excavator actuating system, includes driving motor, driving motor sets up on rotary platform, driving motor's output shaft has the transmission shaft, the transmission shaft passes rotary joint to there is the transmission case, the transmission case sets up on the walking chassis, front axle and rear axle are connected respectively through the transmission shaft at both ends to the transmission case.

In a preferred embodiment of the present invention, the driving motor is vertically disposed on the rotary platform.

In a preferred embodiment of the present invention, a support is disposed on the rotary platform, the support includes a front end cover, a rear end cover and a plurality of support rods disposed therebetween, bottoms of the support rods are disposed on the rotary platform, two ends of the driving motor respectively abut against the front end cover and the rear end cover, and an output shaft of the driving motor passes through the front end cover and is connected to the transmission shaft.

In a preferred embodiment of the present invention, a bearing is disposed on the front end cover, an outer ring of the bearing is connected to a casing of the driving motor, and an inner ring of the bearing is connected to an output shaft of the driving motor.

In a preferred embodiment of the present invention, the driving motor is a permanent magnet synchronous motor.

In a preferred embodiment of the present invention, a brake is connected to the driving motor.

In a preferred embodiment of the present invention, the output shaft of the driving motor is connected to the transmission shaft through a planar flange.

Compared with the prior art, the utility model has the beneficial effects that:

the hydraulic drive system of the conventional wheel type excavator is changed, and the electric drive system is adopted, so that the characteristics of high rotating speed, large torque, low cost and the like of a drive motor are utilized to replace the output of an engine, a gearbox and an upper transmission box are further cancelled, only two-stage transmission of the lower transmission box and a front axle and a rear axle is reserved, the overall transmission efficiency reaches 81 percent, 16 points are improved compared with that of the traditional wheel type excavator, and the noise and the failure rate are reduced after the drive system is simplified.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is an exploded schematic view of the present invention;

fig. 2 is a schematic diagram of the present invention after assembly.

Specifically, 10, a rotary platform; 20. a walking chassis; 30. a swivel joint;

11. a drive motor; 12. a front end cover; 13. a rear end cap; 14. a support bar; 21. a transmission case; 22. a front axle; 23. a rear axle; 31. a drive shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

A wheel excavator driving system is used for a wheel excavator such as an existing wheel excavator, and includes a working device, a revolving platform 10 and a traveling chassis 20, and a revolving joint 30 is provided between the revolving platform 10 and the traveling chassis 20. The swivel joint 30 is a hollow structure and is formed by combining two parts, one part is fixed on the swivel platform 10, the other part is fixed on the walking chassis 20, and the two parts can do relative rotation movement.

As shown in fig. 1, the driving system includes a driving motor 11, an output shaft of the driving motor 11 is connected to a transmission shaft 31, the transmission shaft 31 passes through a rotary joint 30 and is connected to a transmission box 21, and the transmission box 21 is respectively connected to a front axle 22 and a rear axle 23 through the transmission shafts 31 at both ends. The driving system has the advantages that the traditional gearbox and upper transmission box 21 system are replaced by the driving motor 11 system, the structure is simple, the reliability is improved, the noise is reduced, the electric transmission efficiency is high, the energy loss is less, the energy is saved, meanwhile, the electric transmission speed is high, the response is more timely, and the action is more sensitive; that is, the driving system uses the characteristics of high rotating speed, large torque, low cost and the like of the driving motor 11 to replace the output of an engine, further cancels a gearbox and an upper transmission box 21, only keeps two-stage transmission of the transmission box 21 and a front axle 23 below the transmission box and the rear axle, has the total transmission efficiency of 81 percent, and is improved by 16 points compared with the traditional wheel excavator. In this embodiment, the driving motor 11 is a permanent magnet synchronous motor, and the driving motor 11 is further connected with a brake.

As shown in fig. 2, when assembled, the driving motor 11 is disposed on the revolving platform 10, and the transmission case 21 is disposed on the traveling chassis 20. More preferably, the driving motor 11 is vertically disposed on the revolving platform 10. In this embodiment, a support is disposed on the rotary platform 10, and the driving motor 11 is vertically disposed on the rotary platform 10 through the support. Specifically, the bracket includes a front end cap 12, a rear end cap 13, and a plurality of support rods 14 disposed therebetween. The bottom of the support bar 14 is disposed on the rotating platform 10. Two ends of the driving motor 11 respectively abut against the front end cover 12 and the rear end cover 13, and an output shaft of the driving motor 11 passes through the front end cover 12 and is connected with the transmission shaft 31. In this embodiment, the front end cover 12 is further provided with a bearing, an outer ring of the bearing is connected with the housing of the driving motor 11, and an inner ring of the bearing is connected with an output shaft of the driving motor 11. The output shaft of the drive motor 11 is connected to the drive shaft 31 via a flat flange. That is, in this embodiment, the stator of the driving motor 11 is fixed to the rotary platform 10, the rotor output of the driving motor 11 is connected to the transmission shaft 31 by using a planar flange, and the transmission shaft 31 passes through the rotary joint 30 and is then connected to the transmission box 21.

In the embodiment, the driving motor 11 adopts torque control, and outputs positive torque to drive the vehicle to walk when the vehicle walks; and when the vehicle slides or brakes, negative torque is output to recover energy. Before energy recovery, the entire vehicle control system needs to preferentially judge that the rotary platform 10 does not rotate and the brake is locked. When the vehicle control system detects that a parking signal or a balance cylinder signal or an auxiliary braking signal exists, the driving motor 11 is not allowed to output torque. When the wheel excavator does not work and does not walk, the driving motor 11 keeps a static state and does not output any torque.

In conclusion, the hydraulic drive system of the conventional wheel type excavator is changed, and the electric drive system is adopted, so that the characteristics of high rotating speed, large torque, low cost and the like of the drive motor are utilized to replace the output of an engine, a gearbox and an upper gearbox are further cancelled, only two-stage transmission of the lower gearbox and a front axle and a rear axle is reserved, the overall transmission efficiency reaches 81 percent, 16 points are increased compared with that of the conventional wheel type excavator, and the noise and the failure rate are reduced after the drive system is simplified.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a wheeled excavator actuating system, its characterized in that, includes driving motor, driving motor sets up on rotary platform, driving motor's output shaft has the transmission shaft, the transmission shaft passes rotary joint to be connected with the transmission case, the transmission case sets up on the walking chassis, front axle and rear axle are connected respectively through the transmission shaft at both ends to the transmission case.

2. The wheeled excavator drive system of claim 1 wherein the drive motor is vertically disposed on the slewing platform.

3. The wheeled excavator drive system of claim 2 wherein the swing platform is provided with a bracket comprising a front end cap, a rear end cap and a plurality of support rods disposed therebetween, the bottom of the support rods being disposed on the swing platform, the ends of the drive motor respectively abutting against the front end cap and the rear end cap, and the output shaft of the drive motor passing through the front end cap and being connected to the drive shaft.

4. The wheeled excavator drive system of claim 3 wherein the front end cap is provided with a bearing, an outer race of the bearing being connected to the housing of the drive motor and an inner race of the bearing being connected to the output shaft of the drive motor.

5. The wheeled excavator drive system of claim 1 wherein the drive motor is a permanent magnet synchronous motor.

6. The wheeled excavator drive system of claim 1 wherein a brake is connected to the drive motor.

7. The wheeled excavator drive system of claim 1 wherein the output shaft of the drive motor is connected to the drive shaft by a planar flange.