CN214822598U - Electric transmission system of engineering machinery - Google Patents
Electric transmission system of engineering machinery Download PDFInfo
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- CN214822598U CN214822598U CN202120477225.1U CN202120477225U CN214822598U CN 214822598 U CN214822598 U CN 214822598U CN 202120477225 U CN202120477225 U CN 202120477225U CN 214822598 U CN214822598 U CN 214822598U
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Abstract
The utility model provides an engineering machine tool's electric drive system, including the system of driving of electricity, left semi-axis and right semi-axis, the system of driving of electricity include the motor and the gearbox of being connected with motor drive, the output of gearbox connect left semi-axis and right semi-axis respectively, the both ends of left semi-axis and right semi-axis output have set up a speed reducer machine respectively. The utility model discloses set up an electrically drive system for engineering machine tool, for the characteristics requirement that accords with engineering machine tool car speed low, torsion is big, set up a speed reducer respectively at the left semi-axis of vehicle and the both ends of right semi-axis output, the increase of transmission system velocity ratio, the increase of torque of then output, wherein the speed reducer still plays the effect of speed reduction, accords with the characteristics that engineering machine tool car has speed low, torsion is big.
Description
Technical Field
The utility model relates to the technical field of vehicles, more specifically relates to an electric transmission system of engineering machine tool.
Background
With the increasing requirement of the new energy industry on cost, the new energy automobile provides a concept of changing torque at an increased speed. That is, in a transmission system, the speed ratio in the transmission system is increased, thereby increasing the output torque of the transmission system. Therefore, under the condition of needing the same torque, the speed ratio of the gearbox is improved, and the rotating speed of the driving motor can be reduced, so that the cost of the motor is effectively reduced, and the aim of saving energy is fulfilled. The existing new energy automobile is commonly provided with a single-gear transmission with two-stage gears arranged in parallel, and the arrangement space of a transmission system on the whole automobile is limited, so that the lifting space of the speed ratio of the commonly-used single-gear transmission with the gears arranged in parallel is limited, namely the lifting of the output torque is limited.
The new energy automobile is environment-friendly, the structure of the transmission system is simple, and with the continuous expansion of the new energy automobile industry, the related technology of the new energy automobile industry has great significance for transformation and upgrading of other industries, such as engineering machinery, military automobiles and the like. The engineering machinery vehicle has the characteristics of low speed and large torsion, and if the structural arrangement of a transmission system of a new energy vehicle is directly used, a large amount of surplus output rotating speed can be obtained, and the output torque can not meet the requirement. The arrangement scheme of the transmission system in the new energy automobile industry cannot be directly used in the engineering machinery industry, and how to utilize the technical advantages of the new energy automobile industry to promote the development of other industries is also a problem.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an electric transmission system suitable for engineering machine tool.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides an engineering machine tool's electric drive system, includes the system of driving of electricity, left semi-axis and right semi-axis, the system of driving of electricity include the motor and with the gearbox that motor drive is connected, the output of gearbox connect left semi-axis and right semi-axis respectively, the both ends of left semi-axis and right semi-axis output have set up a speed reducer respectively.
Preferably, the gearbox comprises a single-gear transmission connected with an output shaft of the motor and a differential in transmission connection with the single-gear transmission, and an output shaft of the differential is connected with the left half shaft or the right half shaft; the single-gear transmission and the differential are integrated in a shell.
Preferably, the single-gear transmission comprises a primary gear pair and a secondary gear pair, the primary gear pair is formed by meshing a first pinion and a second gearwheel in parallel, the secondary gear pair is formed by meshing a second pinion and a second gearwheel in parallel, and the pinion in the primary gear pair is coaxially connected with the output end of the motor; the first gearwheel is coaxially connected with the second pinion, and the second gearwheel is fixed with the differential shell.
Preferably, the speed reducer is a planetary gear speed reducer and comprises a planet wheel, a sun gear, an inner gear ring and a planet carrier, the sun gear is in key connection with the left half shaft or the right half shaft, and the inner gear ring is fixed on the wheel hub.
Preferably, the motor and the gearbox are wrapped into a whole by a shell, and the output end of the gearbox extends out of the shell to be connected with the left half shaft and the right half shaft.
Preferably, the motor is coordinated and controlled through an interactive controller, the interactive controller is connected with the motor in a signal transmission mode and integrated in a shell wrapping the motor and the gearbox, and an interactive display surface of the interactive controller is exposed out of the shell.
Further preferably, the working machine is a forklift.
In order to meet the requirement that the output torque of a forklift driving system is 3200-3900 N.m, the following settings are carried out:
the rotating speed of the motor is less than or equal to 8000 rpm.
The speed changer is selected from the speed changers with the speed reduction ratio of 7-8.
The speed reducer is selected from those with the reduction ratio of 6-7.
The utility model discloses following beneficial effect has:
an engineering machine tool's electric drive system, set up one kind and be applied to engineering machine tool's electric drive system, for meeting engineering machine tool with the characteristics requirement that speed is low, torsion is big, set up a speed reducer again respectively at the left semi-axis of vehicle and the both ends of right semi-axis output. The speed ratio of the transmission system is increased, the output torque is increased, and the speed reducer also plays a role in speed reduction, so that the vehicle for the engineering machinery has the characteristics of low speed and large torque force. The technical scheme enlarges the application range of the new energy automobile technology and concentrates the technical requirements of the new energy automobile industry and the engineering machinery industry.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of an electric drive system of a work machine.
FIG. 2 is a schematic illustration of a transmission and differential connection.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
Example 1
An electric transmission system of a construction machine, wherein the transmission system is used for the construction machine; as shown in fig. 1, the electric drive system comprises an electric drive system, a left half shaft 1 and a right half shaft 2, the electric drive system comprises a motor 3 and a gearbox in transmission connection with the motor 3, the output end of the gearbox is respectively connected with the left half shaft 1 and the right half shaft 2, and two ends of the output of the left half shaft 1 and the right half shaft 2 are respectively provided with a speed reducer 4.
The gearbox comprises a single-gear transmission 5 connected with an output shaft of the motor 3 and a differential mechanism 6 in transmission connection with the single-gear transmission 5, and an output shaft of the differential mechanism 6 is connected with the left half shaft 1 or the right half shaft 2; the single-speed transmission 5 is integrated with the differential 6 in one housing.
As shown in fig. 2, the single-gear transmission includes a primary gear pair and a secondary gear pair, the primary gear pair is formed by meshing a first pinion 51 and a first bull gear 52 side by side, the secondary gear pair is formed by meshing a second pinion 53 and a second bull gear 54 side by side, and the pinion 51 in the primary gear pair is coaxially connected with the output end of the motor 3; the first bull gear 52 is coaxially connected with the second pinion gear 53, and the second bull gear 54 is fixed with the differential case.
The speed reducer 4 is a planetary gear speed reducer and comprises a planetary gear, a sun gear, an inner gear ring and a planet carrier, the sun gear is in key connection with the left half shaft 1 or the right half shaft 2, and the inner gear ring is fixed on the wheel hub.
The motor 3 and the gearbox are wrapped into a whole by the shell, and the output end of the gearbox extends out of the shell to be connected with the left half shaft 1 and the right half shaft 2.
The motor 3 is coordinated and controlled through an interactive controller 7, the interactive controller 7 is connected with the motor 3 in a signal transmission mode and integrated in a shell wrapping the motor 3 and the gearbox, and an interactive display surface of the interactive controller 7 is exposed out of the shell.
The engineering machinery is a forklift.
In order to meet the requirement that the output torque of a forklift driving system is 3200-3900 N.m, the following settings are carried out:
the rotating speed of the motor is less than or equal to 8000 rpm.
The speed changer is selected from the speed changers with the speed reduction ratio of 7-8.
The speed reducer is selected from those with the reduction ratio of 6-7.
The electric transmission system of the engineering machinery is used for the engineering machinery such as a forklift. The speed reducer 4 is respectively arranged on the two half shafts, so that the speed ratio of the transmission system is increased. Under the condition that the rotating speed of the motor 3 is not changed, the speed reducer 4 is added, the output torque is increased, and the characteristics of low speed and large torque required by the engineering machinery vehicle are met.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides an engineering machine tool's electric drive system, its characterized in that, includes the electricity system of driving, left semi-axis and right semi-axis, the electricity system of driving include the motor and with the gearbox that motor drive is connected, the output of gearbox connect left semi-axis and right semi-axis respectively, the both ends of left semi-axis and right semi-axis output have set up a speed reducer respectively.
2. The electric transmission system of a construction machine according to claim 1, wherein the gearbox includes a single-speed transmission connected to an output shaft of the electric machine and a differential in driving connection with the single-speed transmission, an output shaft of the differential being connected to the left half shaft or the right half shaft; the single-gear transmission and the differential are integrated in a shell.
3. The electric transmission system of an engineering machine according to claim 2, wherein the single-gear transmission comprises a primary gear pair and a secondary gear pair, the primary gear pair is formed by meshing a first pinion gear and a second bull gear in parallel, the secondary gear pair is formed by meshing a second pinion gear and a second bull gear in parallel, and the pinion gear in the primary gear pair is coaxially connected with the output end of the motor; the first gearwheel is coaxially connected with the second pinion, and the second gearwheel is fixed with the differential shell.
4. The electric transmission system of the engineering machinery as claimed in claim 1, wherein the reducer is a planetary gear reducer, and comprises a planetary gear, a sun gear, an inner gear ring and a planetary carrier, wherein the sun gear is in key connection with the left half shaft or the right half shaft, and the inner gear ring is fixed on the hub.
5. The electric transmission system of engineering machinery according to claim 1, wherein the motor and the gearbox are integrally wrapped by a housing, and an output end of the gearbox extends out of the housing and is connected with the left half shaft and the right half shaft.
6. The electric transmission system of a construction machine according to claim 5, wherein the electric machine is cooperatively controlled by an interactive controller, the interactive controller is connected with the electric machine in a signal transmission manner and integrated in a housing enclosing the electric machine and the gearbox, and an interactive display surface of the interactive controller is exposed from the housing.
7. An electric drive system of a working machine according to claim 2, characterized in that the working machine is a forklift.
8. The electric transmission system of the engineering machine according to claim 7, wherein the single-gear transmission is a transmission with a reduction ratio of 7-8.
9. The electric transmission system of construction machinery according to claim 8, wherein the speed reducer is selected from the group consisting of 6 to 7.
10. An electric drive system of a working machine according to claim 9, characterized in that the motor speed is 8000rpm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120477225.1U CN214822598U (en) | 2021-03-05 | 2021-03-05 | Electric transmission system of engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120477225.1U CN214822598U (en) | 2021-03-05 | 2021-03-05 | Electric transmission system of engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214822598U true CN214822598U (en) | 2021-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120477225.1U Active CN214822598U (en) | 2021-03-05 | 2021-03-05 | Electric transmission system of engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214822598U (en) |
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2021
- 2021-03-05 CN CN202120477225.1U patent/CN214822598U/en active Active
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