Electric loader structure

Abstract

The utility model provides an electric loader structure, which has a smaller counter weight, so that the cost and the weight of the whole loader are reduced, and the energy consumption is reduced. According to the electric loader structure, the rear end of a front chassis is hinged to the front end of a rear chassis, a front axle is arranged on the front chassis, a rear axle is arranged on the rear chassis, a loading mechanism is arranged on the front portion of the front chassis and driven by a hydraulic system, and a balance weight is arranged on the rear portion of the rear chassis; the hydraulic system comprises a hydraulic system driving motor, a reduction gearbox and a hydraulic pump, the hydraulic system driving motor drives the hydraulic pump through the reduction gearbox, and the hydraulic pump provides hydraulic oil for the loading mechanism; the hydraulic system driving motor, the reduction gearbox and the hydraulic pump are all arranged on the rear chassis and located between the rear axle and the balance weight.

Description

TECHNICAL FIELD

[0001] The utility model relates to loader structure, specifically speaking, it is electric loader structure. BACKGROUND

[0002] The engineering machinery of electric drive is lower in energy consumption than the engineering machinery of traditional internal combustion engine drive, and the use proportion gradually increases. The general electric loader includes the front chassis and rear chassis that are hingedly connected, the front chassis has the front axle, the rear chassis has the rear axle, the wheels are arranged on the two sides of the front axle and rear axle, and the pneumatic brake system brakes the hub of the wheel. The air pump system provides compressed air to the pneumatic brake system, but in the air pump system, the air pump driving motor that drives the air pump to work is the natural air cooling type motor, and the heat dissipation condition is poor, and the temperature is high in the working process.

[0003] The front chassis is provided with a loading mechanism, and the loading mechanism or other working mechanism is generally driven by a hydraulic system. The loading mechanism is heavy, especially during the loading operation. In order to balance the front chassis including the loading mechanism, a heavy counterweight is generally arranged at the rear of the rear chassis. Thus, the whole loader is heavy and has high energy consumption. SUMMARY

[0004] The utility model discloses a kind of electric loader structures, its counterweight can be smaller, to reduce cost and the weight of whole loader, reduce energy consumption.

[0005] The utility model discloses an electric loader structure, the rear end of front chassis is hingedly connected with the front end of rear chassis, the front chassis has front axle, the rear chassis has rear axle, the front chassis is provided with a loading mechanism, the loading mechanism is driven by a hydraulic system, and the rear chassis is provided with a counterweight;Hydraulic system includes hydraulic system driving motor, reduction gearbox, hydraulic pump, hydraulic system driving motor drives hydraulic pump by reduction gearbox, and hydraulic pump provides hydraulic oil to loading mechanism;Hydraulic system driving motor, reduction gearbox and hydraulic pump are all arranged on rear chassis, and located between rear axle and counterweight.

[0006] The above-mentioned electric loader structure, the bottom of reduction gearbox is connected on rear chassis by reduction gearbox support, and the shell of hydraulic system driving motor and the shell of hydraulic pump are respectively fixed on the two sides of the shell of reduction gearbox. The output shaft of hydraulic system driving motor is connected with the input shaft of reduction gearbox, and the output shaft of reduction gearbox is connected with the input shaft of hydraulic pump.

[0007] The above-mentioned electric loader structure, hydraulic pump has at least two.

[0008] The walking driving mechanism of the front axle and the rear axle comprises a walking driving motor, a gearbox arranged on the rear chassis and located in front of the rear axle, a housing of the walking driving motor is arranged on a housing of the gearbox, and an output of the gearbox is connected with the front axle and the rear axle to drive the front axle and the rear axle.

[0009] The walking driving motor has two in the electric loader structure.

[0010] The bottom of the gearbox is connected with the rear chassis through a gearbox support in the electric loader structure.

[0011] The upper part of the gearbox is provided with a motor controller electrically connected with the walking driving motor in the electric loader structure.

[0012] The electric loader structure further comprises a fan, a radiator for cooling hydraulic oil, a pneumatic brake system for braking the wheel hub, and a gas pump system for providing compressed air to the pneumatic brake system; the gas pump driving motor for driving the gas pump to work, the radiator and the fan are arranged together, and the fan blows air to cool the radiator and the gas pump driving motor at the same time.

[0013] The gas pump system, the radiator and the fan are all arranged on one side of the rear chassis in front of the right rear wheel, the gas pump system is arranged on the inner side, and the radiator and the fan are arranged on the outer side.

[0014] The electric loader structure has the following beneficial effects:

[0015] The hydraulic system driving motor, the gearbox and the hydraulic pump are arranged on the rear chassis and located between the rear axle and the counterweight, so that the hydraulic station composed of the hydraulic system driving motor, the gearbox and the hydraulic pump plays the role of the counterweight, the mass of the conventional counterweight can be reduced, and the whole loader is lighter.

[0016] The hydraulic pump has at least two and can supply oil to different working mechanisms.

[0017] The gas pump driving motor and the gearbox are also arranged on the rear chassis, and the conventional counterweight weight is further reduced.

[0018] The gearbox and the hydraulic station are arranged separately, the space utilization rate is improved, and the upper part of the gearbox has a larger space for mounting the motor controller, so that the maintenance space of the gearbox, the walking driving motor and the hydraulic system driving motor is increased.

[0019] The gas pump driving motor, the radiator and the fan are arranged together, the air around the gas pump is quickly circulated by the fan, and the heat dissipation effect of the gas pump driving motor can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic view of the electric loader structure. DETAILED DESCRIPTION Example 1

[0021] Referring to Figure 1 the electric loader structure shown, the rear end of the front chassis 1 is hinged to the front end of the rear chassis 2, the front chassis has a front axle 3, the rear chassis has a rear axle 4, the front chassis is provided with a loading mechanism 5 at the front part, the loading mechanism is driven by a hydraulic system 7, and the rear chassis is provided with a counterweight 6 at the rear part.

[0022] The hydraulic system 7 includes a hydraulic system drive motor 71, a reduction box 72, two hydraulic pumps 73, and a reduction box support 74. The hydraulic system drive motor 71 drives the two hydraulic pumps 73 through the reduction box 72 to provide hydraulic oil to the loading mechanism (for example, one hydraulic pump provides hydraulic oil to the bucket lifting hydraulic cylinder in the loading mechanism, and the other hydraulic pump provides hydraulic oil to the bucket turning hydraulic cylinder in the loading mechanism).

[0023] The bottom of the reduction box 72 is connected to the rear chassis 2 through the reduction box support 74 and is located between the rear axle 4 and the counterweight 6. The housings of the hydraulic system drive motor and the hydraulic pumps are fixed to the front and rear sides of the housing of the reduction box, respectively. The output shaft of the hydraulic system drive motor is connected to the input shaft of the reduction box, and the output shaft of the reduction box is connected to the input shaft of the hydraulic pumps.

[0024] The travel drive mechanism 8 that drives the front axle and the rear axle includes two travel drive motors 81 and a transmission box 82 arranged on the rear chassis 2 in front of the rear axle 4 through a transmission box support 84. The housings of the travel drive motors are arranged on the housing of the transmission box, and the output of the transmission box is connected to the front axle and the rear axle to drive the front axle and the rear axle.

[0025] A motor controller (not shown) that is electrically connected to the travel drive motors is mounted on the upper part of the transmission box 82.

[0026] A fan 9, a radiator 10 that cools hydraulic oil, and an air pump system 11 that provides compressed air to a pneumatic brake system (not shown) are arranged in sequence from the outside to the inside on the right side of the rear chassis in front of the right rear wheel. The air pump drive motor 111 that drives the air pump to work in the air pump system 11, the radiator 10, and the fan 9 are arranged side by side, and the fan 9 blows air to cool the radiator 10 and the air pump drive motor 111 at the same time.

[0027] The advantages are:

[0028] 1. After the air pump system and oil cooling system are integrated and installed, the fan can cool the air pump system while simultaneously cooling the hydraulic oil, improving the air pump's performance and extending its service life. The air pump drive motor is a naturally air-cooled motor with poor heat dissipation. With this structure, the air around the air pump is driven to circulate rapidly by the fan, which can improve the heat dissipation effect of the air pump drive motor.

[0029] 2. The gearbox and hydraulic station are arranged separately to improve space utilization. At the same time, there is a large space above the gearbox for installing the motor controller, which also increases the maintenance space for the gearbox and motor.

[0030] 3. The hydraulic station is located at the rear, and its weight can replace part of the counterweight, thereby reducing costs and overall energy consumption.

Claims

1. An electric-powered loader structure, the rear end of a front chassis is hinged with the front end of a rear chassis, the front chassis is provided with a front axle, the rear chassis is provided with a rear axle, a loader mechanism is arranged at the front part of the front chassis, the loader mechanism is driven by a hydraulic system, a counterweight is arranged at the rear part of the rear chassis; the hydraulic system comprises a hydraulic system driving motor, a reduction box and a hydraulic pump, the hydraulic system driving motor drives the hydraulic pump through the reduction box, and the hydraulic pump provides hydraulic oil to the loader mechanism; characterized in that: The hydraulic system driving motor, the reduction gearbox and the hydraulic pump are arranged on the rear chassis and located between the rear axle and the counterweight.

2. The electrically powered loader structure of claim 1, characterized in that: The bottom of the reduction gearbox is connected to the rear chassis through a reduction gearbox support, and the shell of the hydraulic system driving motor and the shell of the hydraulic pump are respectively fixed on both sides of the shell of the reduction gearbox. The output shaft of the hydraulic system driving motor is connected to the input shaft of the reduction gearbox, and the output shaft of the reduction gearbox is connected to the input shaft of the hydraulic pump.

3. The electrically powered loader structure of claim 2, wherein: The hydraulic pump has at least two.

4. The electrically powered loader structure of claim 1, 2 or 3, characterized in that: The walking driving mechanism for driving the front axle and the rear axle comprises a walking driving motor and a gearbox arranged on the rear chassis and located in front of the rear axle, the shell of the walking driving motor is arranged on the shell of the gearbox, and the output of the gearbox is connected to the front axle and the rear axle to drive the front axle and the rear axle.

5. The electrically powered loader structure of claim 4, wherein: The walking driving motor has two.

6. The electrically powered loader structure of claim 4, wherein: The bottom of the gearbox is connected to the rear chassis through a gearbox support.

7. The electrically powered loader structure of claim 4, wherein: The upper part of the gearbox is provided with a motor controller electrically connected to the walking driving motor.

8. The electrically powered loader structure of claim 1, wherein: It also includes a fan, a radiator for cooling hydraulic oil, a pneumatic brake system for braking the wheel hub, and a gas pump system for providing compressed air to the pneumatic brake system; the gas pump driving motor for driving the gas pump to work, the radiator and the fan are arranged together, and the fan blows and cools the radiator and the gas pump driving motor at the same time.

9. The electrically powered loader structure of claim 8, wherein: The gas pump system, the radiator and the fan are all installed on one side of the rear chassis in front of the right rear wheel, the gas pump system is on the inner side, and the radiator and the fan are on the outer side.

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