All-in-one electric drive cooling system for loading machine

Abstract

The utility model discloses an all-in-one electrically-driven cooling system for a loader in the technical field of loaders, and aims to solve the problems that an electrically-driven cooling system in the prior art is relatively complex in system loop, relatively large in occupied area and relatively poor in heat dissipation effect due to the fact that a motor and a controller of the loader are in a split type. The loop is formed by connecting a radiator, a water pump, an all-in-one hydraulic electric drive and an all-in-one walking electric drive in series; compared with an electric drive without an integrated cooling system, the device has the advantages that the size is minimized, heat dissipation is efficient, the structure is simplified, the design cost is lower, the applicability is higher, meanwhile, a system loop is simpler, and the practicability of the device is guaranteed; in addition, for the all-in-one electric drive system loader, the electric drive system is integrated, and the heat dissipation requirement of the all-in-one electric drive system loader is met.

Description

Technical Field

[0001] The utility model relates to an all-in-one electric drive cooling system for a loader, belonging to the technical field of loaders. Background Art

[0002] Wheel loaders are earthwork machines widely used in construction projects such as buildings, hydropower, ports, mines, roads, and railways. Common wheel loaders are mainly divided into fuel loaders and natural gas loaders. Fuel loaders are mainly powered by diesel engines, while natural gas loaders are powered by engines that burn gas. At present, most wheel loaders use diesel engines, which are characterized by mature powertrain technology. However, diesel engines consume a lot of fuel, cause severe environmental pollution, and are subject to regulatory constraints.

[0003] In recent years, the emerging electric loaders are driven by electric energy, with low energy consumption and little environmental pollution, and are suitable for use in relatively confined spaces. According to the walking characteristics of the loader, the electric loader needs components such as the walking motor and its controller, and the gearbox; according to the working characteristics of the loader, the electric loader needs components such as the hydraulic motor and its controller; when these components are working, due to the continuous output speed and torque of the whole machine, the walking motor and its controller, the gearbox controller, the hydraulic motor and its controller, etc. will generate heat, causing the temperature of each component to rise. Excessive temperature will not only limit the performance of the electric loader, but also greatly reduce the reliability of these components, and they usually need to be cooled.

[0004] The existing electric drive cooling system usually adopts a split type for the loader motor and its controller. The system circuit is relatively complex, occupies a large volume, and has poor heat dissipation effect, which affects the practicality of the device. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies in the prior art and to provide an all-in-one electric drive cooling system for a loader, so as to solve the problem that when some electric drive cooling systems adopt a split type for the loader motor and its controller, the system circuit is relatively complex, the volume is large, and the heat dissipation effect is poor.

[0006] In order to solve the above technical problems, the utility model is implemented by adopting the following technical solutions:

[0007] The utility model provides an all-in-one electric drive cooling system for a loader, comprising a circuit formed by a radiator, a water pump, an all-in-one hydraulic electric drive and an all-in-one walking electric drive connected in series;

[0008] The all-in-one hydraulic electric drive includes a hydraulic motor and controller assembly and a hydraulic motor reducer integrated into an integrated structure, and the hydraulic motor and controller assembly includes a hydraulic motor and a hydraulic motor controller integrated into an integrated heat dissipation structure;

[0009] The all-in-one electric travel drive includes a travel motor and controller assembly, a gearbox and a gearbox controller integrated into an integrated structure. The travel motor and controller assembly is connected in series with the gearbox controller. The travel motor and controller assembly includes a travel motor and a travel motor controller integrated into an integrated heat dissipation structure.

[0010] Furthermore, the radiator is connected to the water pump through a connecting pipe, the water pump is connected to the hydraulic motor and controller assembly through the connecting pipe, the hydraulic motor and controller assembly is connected to the travel motor and controller assembly through the connecting pipe, the travel motor and controller assembly is connected to the transmission controller through the connecting pipe, and the transmission controller is connected to the radiator through the connecting pipe.

[0011] Furthermore, coolant is provided in the radiator and the plurality of connecting pipes.

[0012] Furthermore, the outer wall of the radiator is provided with a rotatably connected cooling fan.

[0013] Furthermore, it also includes a water supply tank, which is connected to the radiator through the connecting pipe.

[0014] Furthermore, the hydraulic motor and controller assembly has a first temperature sensor built in, the travel motor and controller assembly has a second temperature sensor built in, and the gearbox controller has a third temperature sensor built in.

[0015] Furthermore, the first temperature sensor, the second temperature sensor and the third temperature sensor are all electrically connected to the cooling fan.

[0016] Furthermore, it also includes a first transmission shaft and a second transmission shaft connected to the gearbox, the first transmission shaft is used to drive the front drive axle to move, and the second transmission shaft is used to drive the rear drive axle to move.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The all-in-one electric drive cooling system for the loader is used to cool the all-in-one hydraulic electric drive and the all-in-one walking electric drive through the cooperation of a radiator, a water pump, an all-in-one hydraulic electric drive and an all-in-one walking electric drive. Compared with the electric drive without an integrated cooling system, the system has the characteristics of minimizing the volume, improving the heat dissipation efficiency and simplifying the structure, and has a lower design cost and stronger applicability. At the same time, the system circuit is relatively simple, which ensures the practicality of the device. In addition, the present application integrates the electric drive system into one for the all-in-one electric drive system loader, thereby ensuring the heat dissipation requirements of the all-in-one electric drive system loader.

[0019] 2. The present application controls the cooling fan through the first temperature sensor, the second temperature sensor and the third temperature sensor, which can save energy, reduce power consumption and extend the use time of the loader. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the connection structure of an all-in-one electric drive cooling system for a loader provided according to an embodiment of the utility model.

[0021] In the figure: 1. water replenishment tank; 2. radiator; 3. water pump; 4. all-in-one hydraulic electric drive; 5. first temperature sensor; 6. hydraulic motor and controller assembly; 7. hydraulic motor reducer; 8. all-in-one travel electric drive; 9. travel motor and controller assembly; 10. second temperature sensor; 11. gearbox; 12. gearbox controller; 13. third temperature sensor; 14. front drive axle; 15. rear drive axle; 16. first transmission shaft; 17. second transmission shaft; 18. connecting pipeline. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0023] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0025] like Figure 1 As shown, the utility model provides an all-in-one electric drive cooling system for a loader, including a circuit formed by a radiator 2, a water pump 3, an all-in-one hydraulic electric drive 4 and an all-in-one walking electric drive 8 connected in series; the all-in-one hydraulic electric drive 4 includes a hydraulic motor and controller assembly 6 and a hydraulic motor reducer 7 integrated into an integrated structure, and the hydraulic motor and controller assembly 6 includes a hydraulic motor and a hydraulic motor controller integrated into an integrated heat dissipation structure; the all-in-one walking electric drive 8 includes a walking motor and controller assembly 9, a gearbox 11 and a gearbox controller 12 integrated into an integrated structure, the walking motor and controller assembly 9 is connected in series with the gearbox controller 12, and the walking motor and controller assembly 9 includes a walking motor and a walking motor controller integrated into an integrated heat dissipation structure; the radiator 2 and the plurality of connecting pipes 18 are provided with coolant; the outer wall of the radiator 2 is provided with a rotatably connected cooling fan.

[0026] Specifically, during operation, the coolant in the circuit is driven by the water pump 3 and transported to the series channel formed by the all-in-one hydraulic electric drive 4 and the all-in-one walking electric drive 8 to cool the all-in-one hydraulic electric drive 4 and the all-in-one walking electric drive 8, and then the coolant with increased temperature enters the radiator 2, and after the heat dissipation of the radiator 2, it flows back to the water suction port of the water pump 3 to form a circulation; optionally, in the above-mentioned circulation process of the coolant, after the coolant enters the radiator 2, a cooling fan arranged outside the radiator 2 performs air cooling and heat dissipation on the coolant.

[0027] In the utility model, the radiator 2, the water pump 3, the all-in-one hydraulic electric drive 4 and the all-in-one walking electric drive 8 cooperate to cool the all-in-one hydraulic electric drive 4 and the all-in-one walking electric drive 8. Compared with the electric drive without an integrated cooling system, the characteristics of minimized volume, efficient heat dissipation and simplified structure are achieved, the design cost is lower, the applicability is stronger, and the system circuit is relatively simple, which ensures the practicality of the device; and the present application is aimed at the all-in-one electric drive system loader, and the electric drive system is integrated into one, which ensures the heat dissipation requirements of the all-in-one electric drive system loader.

[0028] In one embodiment, the radiator 2 is connected to the water pump 3 through a connecting pipe 18, the water pump 3 is connected to the hydraulic motor and controller assembly 6 through the connecting pipe 18, the hydraulic motor and controller assembly 6 is connected to the travel motor and controller assembly 9 through the connecting pipe 18, the travel motor and controller assembly 9 is connected to the transmission controller 12 through the connecting pipe 18, and the transmission controller 12 is connected to the radiator 2 through the connecting pipe 18; it also includes a water replenishment tank 1, and the water replenishment tank 1 is connected to the radiator 2 through the connecting pipe 18.

[0029] Specifically, in the circuit of the present application, the output end of the water pump 3 is connected to the hydraulic motor and controller assembly 6 through the connecting pipe 18, the hydraulic motor and controller assembly 6 is connected to the travel motor and controller assembly 9 through the connecting pipe 18, the travel motor and controller assembly 9 is connected to the transmission controller 12 through the connecting pipe 18, the transmission controller 12 is connected to the water inlet input end of the radiator 2 through the connecting pipe 18, the water inlet output end of the radiator 2 forms a closed loop with the suction port of the water pump 3, and the water replenishment tank 1 is separately connected to the radiator 2 to replenish the system with water.

[0030] In one embodiment, the hydraulic motor and controller assembly 6 has a first temperature sensor 5 built in, the travel motor and controller assembly 9 has a second temperature sensor 10 built in, and the transmission controller 12 has a third temperature sensor 13 built in; the first temperature sensor 5, the second temperature sensor 10 and the third temperature sensor 13 are all electrically connected to the cooling fan.

[0031] Specifically, the present application sets the control logic for the start rotation, speed and stop of the cooling fan according to the working temperature limit requirements of the travel motor and controller assembly 9, and controls the start and stop of the cooling fan through the transmission signals of the first temperature sensor 5 built into the hydraulic motor and controller assembly 6, the second temperature sensor 10 built into the travel motor and controller assembly 9, and the third temperature sensor 13 built into the gearbox controller 12; the present application controls the cooling fan through the first temperature sensor 5, the second temperature sensor 10 and the third temperature sensor 13, which can save energy, reduce electricity consumption, and extend the use time of the loader.

[0032] An embodiment further includes a first transmission shaft 16 and a second transmission shaft 17 connected to the gearbox 11 , wherein the first transmission shaft 16 is used to drive the front drive axle 14 to move, and the second transmission shaft 17 is used to drive the rear drive axle 15 to move.

[0033] Specifically, when the electric loader is working, the gearbox 11 is connected to the first transmission shaft 16 and the second transmission shaft 17, and the first transmission shaft 16 and the second transmission shaft 17 are respectively used to drive the front drive axle 14 and the rear drive axle 15 to move; optionally, the hydraulic motor reducer 7 is connected to the hydraulic pump to drive the hydraulic system to work, so as to drive the vehicle steering and the boom to work; the all-in-one hydraulic electric drive 4 and the all-in-one walking electric drive 8 will generate heat due to the continuous output speed and torque when working. When the temperature is too high, the performance of the all-in-one hydraulic electric drive 4 and the all-in-one walking electric drive 8 will be limited or will stop working, thereby affecting the working efficiency and performance of the electric loader; therefore, the present application discloses a kind of all-in-one electric drive cooling system for a loader, the purpose of which is to reduce the temperature of these components and improve the working efficiency and reliability of the electric loader; the loader used in the utility model improves energy utilization and greatly reduces environmental pollution compared with general electric loaders, while reducing the volume and having higher space utilization.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An all-in-one electric drive cooling system for a loader, characterized in that: A circuit comprising a radiator (2), a water pump (3), an all-in-one hydraulic electric drive (4) and an all-in-one walking electric drive (8) connected in series; The all-in-one hydraulic electric drive (4) comprises a hydraulic motor and controller assembly (6) and a hydraulic motor reducer (7) integrated into an integrated structure, and the hydraulic motor and controller assembly (6) comprises a hydraulic motor and a hydraulic motor controller integrated into an integrated heat dissipation structure; The all-in-one electric travel drive (8) comprises a travel motor and controller assembly (9), a gearbox (11) and a gearbox controller (12) integrated into an integrated structure, the travel motor and controller assembly (9) and the gearbox controller (12) are connected in series, and the travel motor and controller assembly (9) comprises a travel motor and a travel motor controller integrated into an integrated heat dissipation structure.

2. The all-in-one electric drive cooling system for a loader according to claim 1, characterized in that: The radiator (2) is connected to the water pump (3) via a connecting pipe (18); the water pump (3) is connected to the hydraulic motor and controller assembly (6) via the connecting pipe (18); the hydraulic motor and controller assembly (6) is connected to the travel motor and controller assembly (9) via the connecting pipe (18); the travel motor and controller assembly (9) is connected to the transmission controller (12) via the connecting pipe (18); and the transmission controller (12) is connected to the radiator (2) via the connecting pipe (18).

3. The all-in-one electric drive cooling system for a loader according to claim 2, characterized in that: Cooling liquid is provided in the radiator (2) and the plurality of connecting pipes (18).

4. The all-in-one electric drive cooling system for a loader according to claim 1, characterized in that: The outer wall of the radiator (2) is provided with a rotatably connected cooling fan.

5. The all-in-one electric drive cooling system for a loader according to claim 2, characterized in that: It also comprises a water replenishment tank (1), wherein the water replenishment tank (1) is connected to the radiator (2) via the connecting pipe (18).

6. The all-in-one electric drive cooling system for a loader according to claim 4, characterized in that: The hydraulic motor and controller assembly (6) has a first temperature sensor (5) built in, the travel motor and controller assembly (9) has a second temperature sensor (10) built in, and the gearbox controller (12) has a third temperature sensor (13) built in.

7. The all-in-one electric drive cooling system for a loader according to claim 6, characterized in that: The first temperature sensor (5), the second temperature sensor (10) and the third temperature sensor (13) are all electrically connected to the cooling fan.

8. The all-in-one electric drive cooling system for a loader according to claim 1, characterized in that: It also includes a first transmission shaft (16) and a second transmission shaft (17) connected to the gearbox (11), wherein the first transmission shaft (16) is used to drive the front drive axle (14) to move, and the second transmission shaft (17) is used to drive the rear drive axle (15) to move.

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