Gearbox of loading system of pure electric loading machine

Abstract

The utility model discloses a pure electric loader loading system gearbox which comprises a first shell, a second shell, an output assembly and an input assembly, the first shell abuts against the second shell, the first shell is connected with the second shell through a box closing bolt, a cavity is formed between the first shell and the second shell, and the output assembly is connected with the input assembly through a box closing bolt. The output assembly and the input assembly are both located in a cavity between the first shell and the second shell, and a water cooling pipe is arranged at the bottom of the first shell. By arranging the water cooling pipe, the local temperature of the gearbox can be reduced, the heating speed of the gearbox during working is slowed down, and the service life of mechanical parts is prolonged; the first output spline shaft, the second output spline shaft and the gear are designed into helical gears, so that the noise during the operation of the gearbox can be effectively reduced; the power of the motor is transmitted to the corresponding gear pump through the first output spline shaft and the second output spline shaft, parts needed by power transmission can be simplified, and the structure of the reduction gearbox can be simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery equipment, in particular to a gearbox for a pure electric loader upper mounting system. Background Art

[0002] A loader is a type of earthmoving machinery widely used in construction projects such as highways, railways, buildings, hydropower stations, ports, and mines. It is primarily used for shoveling bulk materials such as soil, sand, lime, and coal, and can also perform light excavation of ore and hard soil. By replacing it with various auxiliary devices, it can also perform bulldozing, lifting, and loading and unloading of other materials such as wood. Common loaders are fuel-powered. With the continuous increase in energy consumption, especially the increasing severity of air pollution, energy conservation and emission reduction have become one of the most pressing issues in China today. As fuel-powered loaders are high-emission machines, energy conservation and emission reduction are inevitable, which is why pure electric loaders have emerged.

[0003] The main components of a loader include the engine, torque converter, gearbox, and front and rear drive axles. The gearbox is a mechanism used to change the speed and torque from the engine. It can fix or shift the transmission ratio between the output shaft and the input shaft, and is one of the core transmission components of the loader.

[0004] However, since pure electric loaders are in their infancy in China, they generally use the original gearbox assembly. The original gearbox structure is relatively complex and has many internal components, which will generate heat during operation. The complex structure not only takes up installation space but also affects heat dissipation. When the gearbox temperature is too high, it will affect the service life of the mechanical components in the gearbox. Utility Model Content

[0005] The purpose of the utility model is to provide a gearbox for a loading system of a pure electric loader, which can solve the problem of overheating of the gearbox during operation.

[0006] To achieve the above-mentioned object, a pure electric loader upper installation system gearbox is provided, which includes: a first housing, a second housing, an output assembly and an input assembly, the first housing abuts the second housing, the first housing and the second housing are connected by a housing bolt, a cavity is provided between the first housing and the second housing, the output assembly and the input assembly are both located in the cavity between the first housing and the second housing, a water-cooling pipe is provided at the bottom of the first housing, and the input assembly includes a motor shaft; the output assembly includes a front bearing, a rear bearing, a first output spline shaft and a second output spline shaft, one end of the first output spline shaft and the second output spline shaft are both provided with a front bearing, the front bearing is fixedly connected to the second housing, the other end of the first output spline shaft and the second output spline shaft are both provided with a rear bearing, the rear bearing is fixedly connected to the first housing, the first output spline shaft and the second output spline shaft are both meshed with gears on the motor shaft; the first output spline shaft, the second output spline shaft and the gear are all helical gears.

[0007] The working principle and beneficial effects of the utility model are as follows: the first shell is the shell of the gearbox, which can semi-cover the internal components of the gearbox, and the second shell is the outer shell of the motor. When the first shell and the second shell are combined, a cavity for accommodating components can be formed therein; when installing the gearbox, the output assembly and the input assembly are installed in appropriate positions, and then the first shell is installed on the second shell using the combination bolts, so that the gearbox and the motor are fixedly connected, and then the gearbox and the motor are fixedly installed on the frame of the loader through an external suspension device; the first output spline shaft and the second output spline shaft are respectively connected to the corresponding gear pumps, and when the motor is working, the motor can drive the gearbox to work. Specifically, the motor shaft rotates, and the motor shaft drives the first output spline shaft and the second output spline shaft to rotate through the corresponding gears. The rotation of the first output spline shaft and the second output spline shaft respectively drives the corresponding gear pumps to rotate, and when the gear pumps rotate, they can provide power for the loader; the water cooling pipe can be connected to the water cooling system of the loader vehicle;

[0008] By providing a water cooling pipe, the local temperature of the gearbox can be reduced, the speed at which the gearbox heats up during operation can be slowed down, and the service life of the mechanical components can be increased; the first output spline shaft, the second output spline shaft and the gear are designed as helical gears, which can effectively reduce the noise during the operation of the gearbox; the power of the motor is transmitted to the corresponding gear pump through the first output spline shaft and the second output spline shaft, which can simplify the components required for power transmission and simplify the structure of the reduction gearbox.

[0009] According to the gearbox of the upper mounting system of a pure electric loader, the input assembly also includes a first bearing, a first bearing is provided at the end of the motor shaft, the first bearing is fixedly connected to the front housing of the motor, and a first pressure plate and a spacer are provided on the side of the first bearing opposite to the front housing of the motor. The first pressure plate and the spacer are both annular, and the first pressure plate is fixedly connected to the front housing of the motor by a first bolt. The spacer is arranged at intervals in the first pressure plate, and a retaining ring is clamped on the motor shaft, and the spacer is located between the retaining ring and the first bearing.

[0010] The spacer, the snap ring and the first pressure plate can limit the first bearing.

[0011] According to the gearbox of the upper mounting system of a pure electric loader, an oil seal is provided between the first housing and the second housing.

[0012] The oil seal is arranged in the gap between the first shell and the second shell. By setting the oil seal, the gap between the first shell and the second shell can be filled to ensure the sealing of the inner cavity, prevent the inner cavity of the first shell from contacting the outside air, and prevent the lubricating oil in the gearbox from leaking.

[0013] According to the gearbox of the upper mounting system of a pure electric loader, an oil overflow hole is opened on the side of the first shell, and an oil filling screw plug is arranged in the oil overflow hole.

[0014] By setting an oil overflow hole, lubricating oil can be added to the gearbox through the oil overflow hole, and the condition of the lubricating oil in the gearbox can be observed through the oil overflow hole when refueling; by setting an oil filling bolt, the oil overflow hole can be easily opened to add lubricating oil, and the oil overflow hole can be blocked after refueling to ensure the sealing of the gearbox.

[0015] According to the gearbox of the upper mounting system of a pure electric loader, an oil drain hole is provided at the bottom of the first housing, and an oil drain plug assembly is provided in the oil drain hole.

[0016] The oil drain hole and the oil drain bolt assembly are provided to facilitate replacement of the lubricating oil in the gearbox.

[0017] According to the gearbox of the upper mounting system of a pure electric loader, the first housing is provided with a positioning pin.

[0018] By setting the positioning pin, it plays a positioning role when installing the gearbox.

[0019] According to the gearbox of the upper mounting system of a pure electric loader, a normally closed vent plug is provided on the top of the first shell.

[0020] By providing a normally closed vent plug, air circulation inside the gearbox can be ensured, ensuring that the air pressure inside the gearbox is consistent with the external air pressure, avoiding danger caused by the inconsistency between the internal air pressure of the gearbox and the external air pressure.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0023] Figure 1 This is a cross-sectional view of the gearbox of a pure electric loader loading system.

[0024] Figure 2 This is a front view of the gearbox of a pure electric loader loading system.

[0025] Among them: 1. First housing; 101. Clamping bolt; 2. Second housing; 3. Output assembly; 301. Front bearing; 302. Rear bearing; 303. First output spline shaft; 304. Second output spline shaft; 4. Input assembly; 401. Motor shaft; 402. First bearing; 403. First pressure plate; 404. First bolt; 405. Spacer; 406. Snap ring; 5. Oil seal; 6. Oil filling plug; 7. Oil drain plug assembly; 8. Positioning pin; 9. Normally closed vent plug; 10. Water cooling pipe. DETAILED DESCRIPTION

[0026] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of this utility model, terms such as "greater than," "less than," and "exceed" are understood to exclude the number indicated, while terms such as "above," "below," and "within" are understood to include the number indicated. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] Reference Figure 1-Figure 2 The utility model is a pure electric loader upper system gearbox, which includes: a first housing 1, a second housing 2, an output assembly 3 and an input assembly 4. The first housing 1 is in contact with the second housing 2, and the first housing 1 and the second housing 2 are connected by a bolt 101. There is a cavity between the first housing 1 and the second housing 2. The output assembly 3 and the input assembly 4 are both located in the cavity between the first housing 1 and the second housing 2. A water cooling pipe 11 is provided at the bottom of the first housing 1. The input assembly 4 includes a motor shaft 401; the output assembly 3 includes a front bearing 301, a rear bearing 302, a first The output spline shaft 303 and the second output spline shaft 304, one end of the first output spline shaft 303 and the second output spline shaft 304 are both provided with a front bearing 301, and the front bearing 301 is fixedly connected to the second housing 2, and the other end of the first output spline shaft 303 and the second output spline shaft 304 are both provided with a rear bearing 302, and the rear bearing 302 is fixedly connected to the first housing 1, and the first output spline shaft 303 and the second output spline shaft 304 are both engaged with the gears on the motor shaft 5; the first output spline shaft 303, the second output spline shaft 304 and the gears are all helical gears.

[0031] Specifically, when installing the gearbox, the output assembly 3 and the input assembly 4 are installed in appropriate positions, and then the first housing 1 is installed on the second housing 2 using the housing bolts 101, so that the gearbox and the motor are fixedly connected, and then the gearbox and the motor are fixedly installed on the frame of the loader through an external suspension device; the first output spline shaft 303 and the second output spline shaft 304 are respectively connected to the corresponding gear pumps. When the motor is working, the motor can drive the gearbox to work. Specifically, the motor shaft 5 rotates, and the motor shaft 5 drives the first output spline shaft 303 and the second output spline shaft 304 to rotate through the corresponding gears. When the first output spline shaft 303 and the second output spline shaft 304 rotate, they respectively drive the corresponding gear pumps to rotate. When the gear pumps rotate, they can provide power for the loader; the water cooling pipe 11 can be connected to the water cooling system of the loader vehicle.

[0032] Optionally, the input assembly 4 also includes a first bearing 402, and the first bearing 402 is provided at the end of the motor shaft 401. The first bearing 402 is fixedly connected to the front housing of the motor. The first bearing 402 is provided with a first pressure plate 403 and a spacer 405 on the side opposite to the front housing of the motor. The first pressure plate 403 and the spacer 405 are both annular. The first pressure plate 403 is fixedly connected to the front housing of the motor through a first bolt 404. The spacer 405 is arranged at intervals in the first pressure plate 403. A retaining ring 406 is clamped on the motor shaft 401, and the spacer 405 is located between the retaining ring 406 and the first bearing 402.

[0033] Optionally, an oil seal 6 is provided between the first shell 1 and the second shell 2 .

[0034] Optionally, an oil overflow hole is opened on the side of the first shell 1, and an oil filling screw plug 7 is arranged in the oil overflow hole.

[0035] Optionally, an oil drain hole is provided at the bottom of the first shell 1, and an oil drain plug assembly 8 is provided in the oil drain hole.

[0036] Optionally, the first shell 1 is provided with a positioning pin 9 .

[0037] Optionally, a normally closed vent plug 10 is provided on the top of the first shell 1 .

[0038] Specifically, when installing the gearbox, install the output assembly 3 and the input assembly 4 in appropriate positions, then use the box bolts 101 to install the first housing 1 on the second housing 2, so that the gearbox and the motor are fixedly connected, and then the gearbox and the motor are fixedly installed on the frame of the loader through an external suspension device; the first output spline shaft 303 and the second output spline shaft 304 are respectively connected to the corresponding gear pumps. When the motor is working, the motor can drive the gearbox to work. Specifically, the motor shaft 5 rotates, and the motor shaft 5 drives the first output spline shaft 303 and the second output spline shaft 304 to rotate through the corresponding gears. The first output spline shaft 303 When the gear pump 302 rotates and the second output spline shaft 304 rotates, it can drive the corresponding gear pump to rotate. When the gear pump rotates, it can provide power for the loader. During this process, the water cooling pipe 11 and the water cooling system of the loader vehicle work synchronously, and the local temperature of the gearbox can be reduced through the water cooling pipe 11; the spacer 405, the retaining ring 406 and the first pressure plate 403 can limit the first bearing 402; when performing daily maintenance on the gearbox, an oil overflow hole can be set to add lubricating oil to the gearbox through the oil overflow hole; a normally closed vent plug 10 can be provided to ensure air circulation inside the gearbox and ensure that the air pressure inside the gearbox is consistent with the external air pressure.

[0039] When the loader is moving or external forces cause the gearbox to vibrate, the lubricating oil in the gearbox may splash with the vibration, and the splashed lubricating oil can lubricate the front bearing 301, the rear bearing 302, the first bearing 402 and the oil seal 6 in the gearbox.

[0040] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A gearbox for a pure electric loader upper loading system, characterized in that: include: A first housing, a second housing, an output assembly, and an input assembly. The first housing abuts the second housing, and the first housing and the second housing are connected by bolts. A cavity is defined between the first housing and the second housing. The output assembly and the input assembly are both located in the cavity between the first housing and the second housing. A water cooling pipe is provided at the bottom of the first housing. The input assembly includes a motor shaft. The output assembly includes a front bearing, a rear bearing, a first output spline shaft and a second output spline shaft, one end of each of the first output spline shaft and the second output spline shaft is provided with a front bearing, the front bearing is fixedly connected to the second housing, the other end of each of the first output spline shaft and the second output spline shaft is provided with a rear bearing, the rear bearing is fixedly connected to the first housing, and the first output spline shaft and the second output spline shaft are both engaged with the gear on the motor shaft; The first output spline shaft, the second output spline shaft and the gear are all helical gears.

2. The gearbox of the upper loading system of a pure electric loader according to claim 1, characterized in that: The input assembly also includes a first bearing. The end of the motor shaft is provided with a first bearing, and the first bearing is fixedly connected to the front housing of the motor. The first bearing is provided with a first pressure plate and a spacer on the side opposite to the front housing of the motor. The first pressure plate and the spacer are both annular. The first pressure plate is fixedly connected to the front housing of the motor by a first bolt. The spacer is arranged at intervals in the first pressure plate. A retaining ring is clamped on the motor shaft, and the spacer is located between the retaining ring and the first bearing.

3. The gearbox of the upper loading system of a pure electric loader according to claim 1, characterized in that: An oil seal is provided between the first shell and the second shell.

4. The gearbox of the upper loading system of a pure electric loader according to claim 1, characterized in that: An oil overflow hole is provided on the side of the first shell, and an oil filling screw plug is arranged in the oil overflow hole.

5. The gearbox of the upper loading system of a pure electric loader according to claim 1, characterized in that: An oil drain hole is provided at the bottom of the first shell, and an oil drain plug assembly is provided in the oil drain hole.

6. The gearbox of the upper loading system of a pure electric loader according to claim 1, characterized in that: The first housing is provided with a positioning pin.

7. The gearbox of the upper loading system of a pure electric loader according to claim 1, characterized in that: A normally closed vent plug is provided on the top of the first shell.

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