Dual-power excavator electric control device water-cooled motor heat dissipation system and excavator

Abstract

The utility model discloses a dual-power excavator electric control device water-cooled motor heat dissipation system and an excavator. The heat dissipation system comprises a water-cooled motor, a water-cooled rectification electric control system and a radiator, and the radiator is provided with a first liquid inlet, a second liquid inlet, a first liquid outlet and a second liquid outlet; a water cooling motor and a water pump I are connected in series between the first liquid inlet and the first liquid outlet; and a water-cooling rectification electric control system and a water pump II are connected in series between the second liquid inlet and the second liquid outlet. By adopting the water-cooled motor heat dissipation system of the electric control device of the dual-power excavator, the problems of insufficient heat dissipation and high temperature of a permanent magnet synchronous water-cooled motor can be effectively solved; and the problem of high temperature caused by unsmooth heat dissipation of the water-cooling rectification electric control system can be effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering machinery technical field, concretely is a double power excavator electric control device water -cooled motor heat dissipation system and excavator. BACKGROUND

[0002] Green energy-saving electric excavator market demand grows rapidly, but the existing plug-in electric excavator cannot meet the frequent transfer requirement of excavator, and the double power excavator with flexible switching operation power of fuel and motor can meet the operation of tunnel, wharf loading, mobile transfer and is not limited by power source.

[0003] The existing double power excavator motor generally configures asynchronous air-cooled motor, but its volume is too large, the starting current is big, and the speed regulation performance is poor, or configures synchronous water-cooled motor, but the motor and controller, rectifier are connected in series to the heat dissipation system, and the motor high temperature or controller, rectifier high temperature often occurs, resulting in frequent shutdown of the excavator.

[0004] Publication No.: CN114132169A discloses a work vehicle and a thermal management system thereof, comprising a cooling circuit, a first circuit and a second circuit, the first circuit comprising a motor module, the first circuit being arranged side by side with the cooling circuit to enable the cooling circuit to cool the motor module; the second circuit comprising a battery module, a first reversing valve and a second reversing valve; the battery module being connected with the cooling circuit through the first reversing valve and the second reversing valve respectively to enable the cooling circuit to cool the battery module; and the battery module being connected with the first circuit through the first reversing valve and the second reversing valve respectively to enable the first circuit to heat the battery module.

[0005] The existing technology has the problem that the high-temperature cooling water cannot effectively cool the motor after the controller heats the cooling water, and the motor stops due to high temperature.

[0006] Publication No.: CN213108976U discloses a hybrid hydraulic excavator cooling system and a hybrid hydraulic excavator, comprising a heat dissipation device, a conveying device and a plurality of first cooling branches, the plurality of first cooling branches being connected in parallel; a first cooling branch is connected in series with a first cooling device and a first controller matched with the first cooling device; the conveying device is connected with the heat dissipation device, and the conveying device is used to drive the cooling medium to pass through the heat dissipation device and each first cooling branch.

[0007] The existing technology has the problem that the high-temperature cooling water cannot effectively cool the motor after the controller heats the cooling water, and the motor stops due to high temperature.

[0008] CN218648696U discloses a heat dissipation system and working machine, comprising a radiator for cooling liquid; a water pump, the liquid inlet is connected with the liquid outlet of the radiator; a to-be-cooled assembly, comprising a controller and a motor, the controller and the motor are connected in series through a pipeline between the liquid outlet of the water pump and the liquid inlet of the radiator; a filter device is arranged between the liquid outlet of the radiator and the liquid inlet of the water pump.

[0009] The prior art has the problem that the high-temperature cooling water cannot effectively cool the motor after the controller heats the cooling water, and the motor stops due to high temperature.

[0010] In summary, the technical solutions of the above disclosed technologies and the technical problems to be solved and the beneficial effects produced are different from those of the present utility model. The above disclosed technology documents do not have technical inspiration for more technical features and technical problems to be solved and beneficial effects of the present utility model. Utility model content

[0011] In view of the above defects of the prior art, the purpose of the present utility model is to provide a double-power excavator electric control device water-cooled motor heat dissipation system and excavator.

[0012] In order to achieve the above purpose, the present utility model adopts the following technical solutions:

[0013] On the one hand, the present utility model provides a double-power excavator electric control device water-cooled motor heat dissipation system, comprising a water-cooled motor, a water-cooled rectifier electric control system and a radiator, the radiator is provided with a first liquid inlet, a second liquid inlet, a first liquid outlet and a second liquid outlet; the water-cooled motor and a water pump one are connected in series between the first liquid inlet and the first liquid outlet; the water-cooled rectifier electric control system and a water pump two are connected in series between the second liquid inlet and the second liquid outlet.

[0014] Further, the first liquid outlet of the radiator is communicated with the liquid inlet of the water pump one through a water pump one inlet pipe, the liquid outlet of the water pump one is communicated with the liquid inlet of the water-cooled motor through a motor inlet pipe, and the liquid outlet of the water-cooled motor is communicated with the first liquid inlet of the radiator through a motor outlet pipe.

[0015] Further, the water-cooled rectifier electric control system comprises a water-cooled rectifier one, a water-cooled rectifier two and a water-cooled controller.

[0016] Specifically, the second liquid outlet of the radiator is communicated with the liquid inlet of the water pump two through a water inlet pipe of the water pump two, the liquid outlet of the water pump two is communicated with the liquid inlet of the water-cooled rectifier one through a water inlet pipe of the rectifier one, the liquid outlet of the water-cooled rectifier one is communicated with the liquid inlet of the water-cooled rectifier two through a water outlet pipe of the rectifier one, the liquid outlet of the water-cooled rectifier two is communicated with the liquid inlet of the water-cooled controller through a water inlet pipe of the controller, and the liquid outlet of the water-cooled controller is communicated with the second liquid inlet of the radiator through a water outlet pipe of the controller.

[0017] Further, the radiator is a wind-cooled radiator, which comprises a fan and a return bend pipe with radiating fins, and the fan faces the return bend pipe.

[0018] Specifically, the liquid inlet of the return bend pipe is threadedly connected with a sealing pipe three-way joint, which is divided into a first liquid inlet and a second liquid inlet, and the liquid outlet of the return bend pipe is threadedly connected with a sealing pipe three-way joint, which is divided into a first liquid outlet and a second liquid outlet.

[0019] Further, a sub-water tank is further included, the liquid inlet of the sub-water tank is communicated with the overflow port of the radiator through a water supplement pipe, the liquid outlet of the sub-water tank is connected with an overflow water pipe, the other end of the overflow water pipe is open downward, and the overflow port of the radiator is arranged at the high point of the return bend pipe.

[0020] Further, the water-cooled motor is located on the left / right side of the radiator, and the water-cooled rectifier control system is located on the right / left side of the radiator.

[0021] In the second aspect, the utility model provides a kind of excavator, including the water-cooled motor cooling system of the electric control device of a kind of double-power excavator of one aspect.

[0022] Compared with prior art, the utility model has the following beneficial effects:

[0023] 1, the water-cooled motor cooling system of the electric control device of a kind of double-power excavator in the utility model can effectively solve the problem of insufficient heat dissipation of permanent magnet synchronous water-cooled motor, and solve the problem of high temperature of permanent magnet synchronous water-cooled motor.

[0024] 2, the water-cooled motor cooling system of the electric control device of a kind of double-power excavator in the utility model can effectively solve the problem of high temperature of controller and rectifier due to poor heat dissipation, and cause shutdown. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the structure diagram of the water-cooled motor cooling system of the electric control device of a kind of double-power excavator.

[0026] Figure: 1, radiator; 2, water pump one inlet pipe; 3, water pump one; 4, motor inlet pipe; 5, motor outlet pipe; 6, water replenishment pipe; 7, water pump two inlet pipe; 8, rectifier one inlet pipe; 9, rectifier one outlet pipe; 10, controller inlet pipe; 11, controller outlet pipe; 12, auxiliary water tank; 13, auxiliary water tank support; 14, first throat clamp; 15, second throat clamp; 16, third throat clamp; 17, first pipe clamp; 18, second pipe clamp; 19, bolt M6x35; 20, gasket 6; 21, bolt M12x40; 22, gasket 12; 23, bolt M6x50; 24, bolt M12x25; 25, bolt M12x35; 26, bolt M12x30; 27, pull rod one; 28, pull rod two; 29, overflow pipe; 30, fixed plate one; 31, fixed plate two; 32, water pump two; 33, radiator mounting plate; 34, water-cooled motor; 35, water-cooled rectifier one; 36, water-cooled rectifier two; 37, water-cooled controller. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] Embodiment 1

[0029] Please refer to Figure 1 The utility model provides a kind of water-cooled motor radiator system of double power excavator electric control device, including water-cooled motor 34, water-cooled rectifier control system, radiator 1, the radiator 1 is provided with first liquid inlet, second liquid inlet, first liquid outlet, second liquid outlet, water-cooled motor 34, water pump one 3 are connected in series between the first liquid inlet, first liquid outlet, water-cooled rectifier control system, water pump two 32 are connected in series between the second liquid inlet, second liquid outlet.

[0030] Specifically, the first liquid outlet of the radiator 1 is communicated with the liquid inlet of the water pump one 3 by water pump one inlet pipe 2, the liquid outlet of the water pump one 3 is communicated with the liquid inlet of the water-cooled motor 34 by motor inlet pipe 4, the liquid outlet of the water-cooled motor 34 is communicated with the first liquid inlet of the radiator 1 by motor outlet pipe 5.

[0031] Specifically, the two ends of the water pump one inlet pipe 2, the two ends of the motor inlet pipe 4, the two ends of the motor outlet pipe 5 are connected with corresponding liquid inlet or liquid outlet by the first throat clamp 14.

[0032] Specifically, the water-cooled rectifier control system comprises a water-cooled rectifier 35, a water-cooled rectifier 36, a water-cooled controller 37, the second liquid outlet of the radiator 1 is communicated with the liquid inlet of the water pump 32 through the water pump 2 inlet pipe 7, the liquid outlet of the water pump 32 is communicated with the liquid inlet of the water-cooled rectifier 35 through the rectifier 1 inlet pipe 8, the liquid outlet of the water-cooled rectifier 35 is communicated with the liquid inlet of the water-cooled rectifier 36 through the rectifier 1 outlet pipe 9, the liquid outlet of the water-cooled rectifier 36 is communicated with the liquid inlet of the water-cooled controller 37 through the controller inlet pipe 10, and the liquid outlet of the water-cooled controller 37 is communicated with the second liquid inlet of the radiator 1 through the controller outlet pipe 11.

[0033] The water-cooled rectifier 35 is used to provide direct current to the water-cooled motor 34, the water-cooled rectifier 36 is used to provide direct current to the water-cooled controller 37, and the water-cooled controller 37 controls the operation of the water-cooled motor 34. In the double-power excavator, the water-cooled rectifier 35 and the water-cooled rectifier 36 are provided with alternating current by the generator.

[0034] Specifically, the two ends of the water pump 2 inlet pipe 7, the two ends of the rectifier 1 inlet pipe 8, the two ends of the rectifier 1 outlet pipe 9, the two ends of the controller inlet pipe 10 and the two ends of the controller outlet pipe 11 are connected with the corresponding liquid inlets or liquid outlets through the second throat clamp 15.

[0035] Specifically, the radiator is a wind-cooled radiator, which comprises a fan and a return bend pipe with heat dissipation fins, the fan faces the return bend pipe, the liquid inlet of the return bend pipe is threadedly connected with a tee joint through a sealing pipe, and the tee joint divides into a first liquid inlet and a second liquid inlet, and the liquid outlet of the return bend pipe is threadedly connected with a tee joint through a sealing pipe, and the tee joint divides into a first liquid outlet and a second liquid outlet.

[0036] The auxiliary water tank 12 is further provided, the liquid inlet of the auxiliary water tank 12 is communicated with the overflow port of the radiator 1 through the water supplement pipe 6, the liquid outlet of the auxiliary water tank 12 is connected with the overflow water pipe 29, and the other end of the overflow water pipe 29 is open downward; the liquid inlet of the auxiliary water tank 12 is provided with double channels, and a pressure valve and a vacuum valve are arranged in the two channels respectively; during the operation, the cooling liquid is heated and expanded, the pressure in the radiator 1 is also increased, when the pressure reaches the opening pressure of the water tank cover pressure valve, the pressure valve is opened, and the cooling liquid flows into the auxiliary water tank 12; the cooling liquid is contracted, when the vacuum degree in the radiator reaches the opening pressure of the vacuum valve, the vacuum valve is opened, and the cooling liquid flows back to the radiator 1.

[0037] Specifically, the overflow port is arranged at the high point of the bend pipe of the radiator 1, so that the gas is easily discharged.

[0038] Specifically, the two ends of the water supplement pipe 6 are connected with the corresponding liquid inlets and the overflow port through the third throat clamp 16, and the overflow water pipe 29 is connected with the liquid outlet of the auxiliary water tank 12 through the third throat clamp 16.

[0039] Specifically, the water pipe 6 is fixed with the radiator 1 by the first pipe clamp 17, and the controller water inlet pipe 10 is fixed with the water-cooled rectifier base by the second pipe clamp 18.

[0040] Further, the water-cooled motor 1 is located on the left / right side of the radiator 1, and the water-cooled rectifier control system is located on the right / left side of the radiator 1.

[0041] Specifically, the water-cooled motor 34 is a permanent magnet synchronous water-cooled motor, and the water pump one 3 and the water pump two 32 are large-flow brushless water pumps.

[0042] It should be noted that the water-cooled motor 34, the water-cooled rectifier, and the water-cooled controller are prior art, and those skilled in the art are clear about their structures.

[0043] Embodiment 2:

[0044] On the basis of embodiment 1, a water-cooled motor cooling system of a double-power excavator electric control device is applied to a double-power excavator, and a fixed plate one 30, a fixed plate two 31, a radiator mounting plate 33, and a sub-water tank support 13 are arranged in the motor compartment of the excavator. The water pump one 3 is connected with the fixed plate one 30 through a bolt M6x5023, the water pump two 32 is connected with the fixed plate two 31 through a bolt M6x35 19 and a washer 620, the bottom of the radiator 1 is fixed on the radiator mounting plate 33 through a bolt M12x4021 and a washer 1222, and the sub-water tank 12 is fixed to the sub-water tank support 13 through a washer 1222 and a bolt M12x25 24.

[0045] One side wall of the radiator 1 is connected with the side beam of the excavator through a pull rod one 27, one end of the pull rod one 27 is connected with the radiator 1 through a bolt M12x3026, and the other end is connected with the side beam of the excavator through a bolt M12x40 21. The other side wall of the radiator 1 is connected with the side beam of the excavator through a pull rod two 28, one end of the pull rod two 28 is connected with the radiator 1 through a bolt M12x3026, and the other end is connected with the side beam of the excavator through a bolt M12x35 25.

[0046] It should be noted that the double-power excavator itself belongs to the prior art, and those skilled in the art are clear about the structure of the double-power excavator, the installation method of the water-cooled motor 34, the water-cooled rectifier one 35, the water-cooled rectifier two 36, the water-cooled controller 37, and the generator, and the electrical connection relationship therebetween.

[0047] The utility model discloses a contribution mainly is water -cooling motor 34 and water -cooling rectifier electric control system parallel to radiator 1 both sides, and radiator 1 both sides are equipped with high -flow brushless water pump one 3, water pump no. 32 respectively, and water -cooling motor 34 and water -cooling rectifier electric control system respectively with the import and export end of radiator 1 are communicated, form two independent heat dissipation circulating systems, effectively solve the motor heat dissipation is not enough, cause motor high temperature problem, effectively solved the rectifier, controller heat dissipation is not enough, cause rectifier, controller high temperature problem.

[0048] In the present application, the parts not discussed, the connection mode of each part in the present application belongs to the known technology in the technical field. Direct application can be used, and no further description is given.

[0049] In the present application, the term "a plurality of" refers to two or more, unless otherwise specified. The terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense. For example, "connecting" can be fixed connection, or detachable connection, or integrally connected. "Connected" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the present application.

[0051] In the description of the present application, the terms "one embodiment", "some embodiments", "specific embodiments" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] The above is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A double power excavator electric control device water-cooled motor cooling system, comprising a water-cooled motor, a water-cooled rectifier electric control system, and a radiator, characterized in that, The radiator is provided with a first liquid inlet, a second liquid inlet, a first liquid outlet, and a second liquid outlet; A water-cooled motor and a water pump are connected in series between the first liquid inlet and the first liquid outlet. A water-cooled rectifier control system and a second water pump are connected in series between the second liquid inlet and the second liquid outlet.

2. The water-cooled motor cooling system for an electric control device of a dual-power excavator according to claim 1, characterized in that, The first liquid outlet of the radiator is connected to the liquid inlet of the first water pump through the water inlet pipe of the first water pump. The liquid outlet of the first water pump is connected to the liquid inlet of the water-cooled motor through the motor inlet pipe. The liquid outlet of the water-cooled motor is connected to the first liquid inlet of the radiator through the motor outlet pipe.

3. The water-cooled motor cooling system for an electric control device of a dual-power excavator according to claim 1, characterized in that, The water-cooled rectifier control system includes a water-cooled rectifier I, a water-cooled rectifier II, and a water-cooled controller; The second outlet of the radiator is connected to the inlet of the second water pump through the inlet pipe of the second water pump. The outlet of the second water pump is connected to the inlet of the first water-cooled rectifier through the inlet pipe of the first rectifier. The outlet of the first water-cooled rectifier is connected to the inlet of the second water-cooled rectifier through the outlet pipe of the first rectifier. The outlet of the second water-cooled rectifier is connected to the inlet of the water-cooled controller through the inlet pipe of the controller. The outlet of the water-cooled controller is connected to the second inlet of the radiator through the outlet pipe of the controller.

4. The water-cooled motor cooling system for an electronic control device of a dual-power excavator according to claim 1, characterized in that, The radiator is an air-cooled radiator, including a fan and a bend pipe with heat dissipation fins, wherein the fan faces the bend pipe; The inlet of the return bend is connected to a tee via a sealed pipe thread, which branches into a first inlet and a second inlet. The outlet of the return bend is connected to a tee via a sealed pipe thread, which branches into a first outlet and a second outlet.

5. The water-cooled motor cooling system for an electric control device of a dual-power excavator according to claim 4, characterized in that, It also includes an auxiliary water tank, the inlet of which is connected to the overflow port of the radiator via a water supply pipe, the outlet of which is connected to an overflow pipe, the other end of which is open and facing downwards, and the overflow port of the radiator is located at the high point of the bend.

6. The water-cooled motor cooling system for an electronic control device of a dual-power excavator according to claim 1, characterized in that, The water-cooled motor is located on the left / right side of the radiator, and the water-cooled rectifier control system is located on the right / left side of the radiator.

7. An excavator characterized by comprising: The invention includes a water-cooled motor cooling system for a dual-power excavator electronic control device as described in any one of claims 1-6.

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