Motor heat dissipation system suitable for high-horsepower hybrid tractor

Abstract

A motor heat dissipation system suitable for a high-horsepower hybrid tractor comprises an upper water pipe, a heat dissipation water tank, a lower water pipe, an expansion water tank, a water tank air outlet pipe, a water tank water outlet pipe and a thin exhaust pipe, a hole is formed in the top of the expansion water tank and communicated with the thin exhaust pipe, and the side edge of the expansion water tank is close to the top. The bottom of the expansion water tank is communicated with the middle-section pipe body of the water outlet pipe on the motor controller through the water tank water outlet pipe, and the bottom of the expansion water tank is higher than the top opening of the heat dissipation water tank. The expansion water tank is additionally arranged on an original heat dissipation system and installed at the highest position of the system, the water outlet pipe of the water tank is directly connected with the sewer pipe, cooling liquid enters the heat dissipation water tank to circulate from the bottom of the heat dissipation water tank, too much air cannot enter the heat dissipation water tank during adding, and good heat dissipation performance is guaranteed; the system pressure is constant, exhaust is facilitated, and the heat dissipation work efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to tractor technical field, concretely relates to a motor heat dissipation system suitable for big horsepower hybrid tractor. BACKGROUND

[0002] The hybrid tractor has two big components of motor controller and battery compared with the traditional fuel type tractor, and has higher demand and requirement in heat dissipation. Figure 1 It is the heat dissipation system layout of some hybrid tractor, and is composed of upper water pipe 1', heat dissipation water tank 2' and lower water pipe 3', the both ends of upper water pipe 1' are communicated with the top opening of heat dissipation water tank 2' and the opening on motor 4' respectively, the both ends of lower water pipe 3' are communicated with the bottom opening of heat dissipation water tank 2' and the opening on gearbox 5' respectively, the cooling liquid in motor controller 6' enters gearbox 5' through water circulation, and then the hot liquid in gearbox 5' is brought to the high position of the whole system, the top opening of heat dissipation water tank 2', after cooling, is backflowed through lower water pipe 3', and the structure has the following deficiencies:

[0003] In the heat dissipation circulation system, adding cooling liquid and discharging air in the system are carried out through heat dissipation water tank 2', the top opening of heat dissipation water tank 2' is at the highest position, air in the system is not easy to discharge, and the cooling capacity of the whole system is reduced, and because the pipeline is long, the internal air is more, the pressure is larger, the cooling liquid is difficult to fill up initially, needs to be circulated for many times, and all air can be discharged only by repeatedly adding cooling liquid, so frequent opening and closing of the cover are operated, the operation time is wasted, and the operation efficiency is reduced;

[0004] In the water circulation of the system, because water expands when heated, the volume is larger, heat dissipation water tank 2' and the corresponding connecting pipeline can not completely accommodate the excess water generated by expansion, the internal pressure is too high, and the normal work of the heat dissipation system is affected. UTILITY MODEL CONTENTS

[0005] The utility model at least solves one of the technical problems in the prior art. To this end, the utility model aims at providing a motor heat dissipation system suitable for big horsepower hybrid tractor to solve the technical problem that the heat dissipation performance is affected by the air not easy to discharge and the water generated by heating in the system.

[0006] The utility model is realized through the following technical schemes:

[0007] The utility model provides a motor heat dissipation system suitable for big horsepower hybrid tractor, it includes: the upper water pipe, the heat dissipation water tank, the lower water pipe, the expansion water tank, the water tank air outlet pipe, the water tank water outlet pipe and the thin exhaust pipe, the both ends of upper water pipe are communicated with the top opening of heat dissipation water tank, the opening on the motor respectively, the both ends of lower water pipe are communicated with the bottom opening of heat dissipation water tank, the opening on the gearbox respectively, the top opening of expansion water tank is communicated with thin exhaust pipe, the side of expansion water tank is close to the top position, and the middle section pipe body on the water outlet pipe of motor controller is communicated through the water tank air outlet pipe, the bottom of expansion water tank is communicated with the middle section pipe body of lower water pipe through the water tank water outlet pipe, expansion water tank is installed on the rear wall of cab, and the bottom of expansion water tank is higher than the top opening of heat dissipation water tank.

[0008] Preferably, the tank body of the expansion water tank is transparent.

[0009] Preferably, the top of the expansion water tank is provided with an exhaust hole, and the thin exhaust pipe is inserted into the exhaust hole and fixed by a gland.

[0010] Preferably, each of the water tank air outlet pipe and the water tank water outlet pipe is connected to the opening communicated therewith by a 24° conical sealing structure.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] 1. The utility model adds an expansion water tank to the original heat dissipation system, and the middle section pipe body on the water outlet pipe of the motor controller is communicated through the water tank air outlet pipe at the side of the expansion water tank close to the top position, and the middle section pipe body of the lower water pipe is communicated through the water tank water outlet pipe at the bottom of the expansion water tank, and the thin exhaust pipe is communicated with the atmosphere, so that the system pressure is constant, the exhaust is facilitated, and the heat dissipation efficiency is improved.

[0013] 2. The expansion water tank is installed on the rear wall of the cab, and the bottom position is higher than the position of the top opening of the heat dissipation water tank, is located at the highest position of the system, the liquid level is clear and visible, water can be added without opening any protective device, the operation is facilitated, the water tank water outlet pipe is directly connected to the lower water pipe, the cooling liquid enters the circulation from the bottom of the heat dissipation water tank, and too much air will not enter when adding, so that the heat dissipation performance is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be to the embodiment description needed to use the drawing briefly introduced, obviously, the following description in the drawing is only some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0015] Figure 1This is a schematic diagram of the original motor cooling system used in high-horsepower hybrid tractors;

[0016] Figure 2 This is a schematic diagram of the structure of the electric motor cooling system of this utility model applicable to high-horsepower hybrid tractors;

[0017] Figure 3 for Figure 2 Top view;

[0018] Figure 4 This is an enlarged view of the fine exhaust pipe of this utility model.

[0019] The components include: water inlet pipe 1, cooling water tank 2, water outlet pipe 3, expansion tank 4, vent 401, water tank vent pipe 5, water tank outlet pipe 6, fine vent pipe 7, pressure cap 8, motor 9, gearbox 10, motor controller 11, and water outlet pipe 12. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings. Figures 2-4 This invention illustrates a motor cooling system suitable for high-horsepower hybrid tractors, comprising an upper water pipe 1, a radiator 2, a lower water pipe 3, an expansion tank 4, a vent pipe 5, a drain pipe 6, and a thin exhaust pipe 7. The two ends of the upper water pipe 1 are connected to the top opening of the radiator 2 and an opening on the motor 9, respectively. The two ends of the lower water pipe 3 are connected to the bottom opening of the radiator 2 and an opening on the gearbox 10, respectively. Compared to the original cooling system, this invention adds the expansion tank 4, the vent pipe 5, the drain pipe 6, and the thin exhaust pipe 7.

[0022] At the side of the expansion water tank 4, close to the top position, the water tank air outlet pipe 5 is connected to the middle section pipe of the water outlet pipe 12 of the motor controller 11, at the bottom of the expansion water tank 4, the water tank water outlet pipe 6 is connected to the middle section pipe of the lower water pipe 3, and finally the expansion water tank 4 is installed on the rear wall of the cab, so that the bottom of the expansion water tank 4 is higher than the top opening of the radiator water tank 2, and is located at the highest position of the system. The top opening of the expansion water tank 4 is connected to the fine exhaust pipe 7, and since the fine exhaust pipe 7 is connected to the atmosphere, the internal pressure of the system is constant, the exhaust is facilitated, and the heat dissipation efficiency is improved. The water tank water outlet pipe 6 is directly connected to the lower water pipe 3, and the cooling liquid enters the circulation from the bottom of the radiator water tank 2, so that there is not too much air entering during addition, and the heat dissipation performance is guaranteed.

[0023] In order to facilitate observation of the liquid level in the expansion water tank 4, the tank body of the expansion water tank 4 is designed to be transparent.

[0024] In order to fix the fine exhaust pipe 7, the top of the expansion water tank 4 is provided with an exhaust hole 401, the fine exhaust pipe 7 is inserted into the exhaust hole 401, and the compression cover 8 is used for fixing.

[0025] In order to increase the sealing performance of the pipe connection in the system, prevent liquid leakage, and the like, the water tank air outlet pipe 5 and the water tank water outlet pipe 6 are respectively connected to the 24° taper sealing structure between the openings connected thereto. The 24° taper sealing structure is known in the prior art, and will not be described here again, and has good sealing effect and low failure rate.

[0026] The working principle of the utility model is as follows:

[0027] As shown in Figure 2 The utility model discloses a motor heat dissipation system suitable for a large-horsepower hybrid tractor, and Figure 1 Compared with the prior art, the expansion water tank 4, the exhaust hole 401, the water tank air outlet pipe 5, the water tank water outlet pipe 6 and the fine exhaust pipe 7 are added. The expansion water tank 4 is installed on the rear wall of the cab, and the height is at the highest position of the whole system, the top compression cover 8 is provided with the fine exhaust pipe 7, the internal pressure is communicated with the outside, the exhaust is facilitated, the water tank air outlet pipe 5 at the side is connected to the water outlet pipe 12 of the motor controller 11, the water tank water outlet pipe 6 at the bottom is connected to the lower water pipe 3, and the cooling liquid directly flows back into the gearbox 10.

[0028] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A motor cooling system suitable for a high-horsepower hybrid tractor, comprising an upper water pipe (1), a radiator (2), and a lower water pipe (3), wherein the two ends of the upper water pipe (1) are respectively connected to the top opening of the radiator (2) and an opening on the motor (9), and the two ends of the lower water pipe (3) are respectively connected to the bottom opening of the radiator (2) and an opening on the gearbox (10), characterized in that: It also includes an expansion tank (4), a tank vent pipe (5), a tank outlet pipe (6), and a fine exhaust pipe (7). The top of the expansion tank (4) is open and connected to the fine exhaust pipe (7). The side of the expansion tank (4) near the top is connected to the middle section of the outlet pipe (12) on the motor controller (11) through the tank vent pipe (5). The bottom of the expansion tank (4) is connected to the middle section of the drain pipe (3) through the tank outlet pipe (6). The expansion tank (4) is installed on the rear panel of the cab. The bottom of the expansion tank (4) is higher than the top opening of the radiator tank (2).

2. The motor cooling system for high-horsepower hybrid tractors according to claim 1, characterized in that: The expansion tank (4) has a transparent body.

3. The motor cooling system for high-horsepower hybrid tractors according to claim 1, characterized in that: The expansion tank (4) has an exhaust hole (401) on its top. The thin exhaust pipe (7) is inserted into the exhaust hole (401) and fixed with a pressure cap (8).

4. The motor cooling system for high-horsepower hybrid tractors according to claim 1, characterized in that: The air outlet pipe (5) and water outlet pipe (6) of the water tank are each connected to their respective openings using a 24° cone sealing structure.

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