Comprehensive preheating system for engineering machinery and engineering machinery

Abstract

The invention belongs to the technical field of engineering machinery, and particularly relates to a comprehensive preheating system for engineering machinery and the engineering machinery. Comprising a cab preheating module, a cooling liquid preheating module, a fuel preheating module, an engine oil preheating module, a hydraulic oil preheating module and a storage battery preheating module, and the problems of engine starting and on-machine operation are solved on the premise that the operation cost is not increased and media with proper labels do not need to be switched when the temperature changes suddenly. The preheating modules can operate independently, the situation that the preheating modules cannot operate due to mutual influence is avoided, external power supply is used for preheating the storage battery, and the problem of power shortage of the storage battery is solved; the method can be realized through temperature detection or storage battery discharge capacity detection, and is convenient to implement. And through the cab preheating module and cab independent warm air control, the waiting time of an operator before operation is shortened, and the working comfort and the working efficiency are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of engineering machinery, and in particular relates to a comprehensive preheating system for engineering machinery and the engineering machinery. Background Art

[0002] The wheeled crane preheating system primarily preheats the engine coolant. When winter arrives, the engine can be started and operated by preheating the coolant, using a low-temperature-resistant battery, and using low-grade engine oil, fuel, and hydraulic oil. However, due to the high cost of low-grade engine oil, diesel, and hydraulic oil, this can increase equipment operating costs.

[0003] Patent number CN118815629B discloses a cold start preheating system and construction machinery. The cold start preheating system includes a fuel preheating module, an antifreeze preheating module, a hydraulic oil preheating module, and a master controller. The master controller is configured to: upon entering preheating mode, control the fuel preheating module to start operating; control the antifreeze preheating module to start operating when the fuel viscosity in the fuel tank is determined to be less than a first preset viscosity; and control the hydraulic oil preheating module to start operating when the battery temperature is determined to have reached a first preset temperature. The cold start preheating system of the present invention has a short preheating time and excellent preheating effect, improving the reliability of smooth cold starts in extremely cold areas and shortening user waiting time. It also significantly reduces equipment operating costs in low-altitude and high-altitude cold regions, improves equipment availability, and enhances reliability. However, the preheating system relies on viscosity measurement, but there is no mature instrument for direct viscosity measurement on the market. Furthermore, the modules are interconnected, and if a problem occurs in a single module, the entire preheating system will be affected, making implementation difficult. Furthermore, the energy required for battery preheating is ultimately supplied by the battery, making it difficult to implement. Summary of the Invention

[0004] In view of the above problems existing in the prior art, the present invention provides a comprehensive preheating system for engineering machinery and engineering machinery, which can solve the problem of engine cold start and battery power loss and is easy to implement.

[0005] To achieve the above-mentioned purpose, the technical solution provided by the present invention is as follows:

[0006] In a first aspect, the present application provides a comprehensive preheating system for construction machinery, comprising:

[0007] Cab preheating module, used to heat the cab and operating room of construction machinery;

[0008] Coolant preheating module, used to heat the engine coolant of construction machinery;

[0009] Fuel preheating module, used to preheat the fuel system of construction machinery;

[0010] Oil preheating module, used to heat the engine lubricating oil of construction machinery;

[0011] Hydraulic oil preheating module, used to heat the hydraulic system of construction machinery on-board operations;

[0012] Battery preheating module, used to heat the battery of construction machinery;

[0013] The battery preheating module is heated by external power supply; the cab preheating module, coolant preheating module, fuel preheating module, oil preheating module and hydraulic oil preheating module are heated by batteries or external power supply; the temperature of each preheating module is independently controlled.

[0014] Optionally, the cab preheating module, coolant preheating module and fuel preheating module are heated by powering a battery; the engine oil preheating module, hydraulic oil preheating module and battery preheating module are heated by powering an external device.

[0015] Optionally, it also includes a first main controller and a second main controller, the first main controller is used to monitor the actual temperature of the battery to the cab preheating module, the coolant preheating module and the fuel preheating module and control the power supply from the battery to the cab preheating module, the coolant preheating module and the fuel preheating module; the second main controller is used to monitor the temperature of the oil preheating module and the hydraulic oil preheating module and the battery discharge amount of the battery preheating module, and at the same time, control the external power supply to the oil preheating module, the hydraulic oil preheating module and the battery preheating module.

[0016] Optionally, the battery preheating module includes a battery activity indicator, a battery preheating controller and a battery heater. The battery activity indicator is used to detect the battery discharge amount, and the battery heater is used to heat the battery. The battery preheating controller is configured to: in response to the battery discharge amount being less than a preset value, control the battery heater to operate; in response to the battery discharge amount being greater than or equal to the preset value, control the battery heater to stop heating. The battery activity indicator includes a battery tester for detecting the battery discharge amount.

[0017] Optionally, the cab preheating module includes a cab temperature detector, a cab preheating controller and a cab air heater, the cab temperature detector is used to detect the air temperature in the cab, and the cab air heater is used to heat the air in the cab; the cab preheating controller is configured to: in response to the air temperature in the cab being less than a preset value, control the cab air heater to work; in response to the air temperature in the cab being greater than or equal to the preset value, control the cab air heater to stop heating.

[0018] Optionally, the fuel preheating module includes a fuel temperature detector, a fuel preheating controller and a fuel heater, the fuel temperature detector is used to detect the fuel temperature, and the fuel heater is used to heat the fuel; the fuel preheating controller is configured to: in response to the fuel temperature being less than a preset value, control the fuel heater to work; in response to the fuel temperature being greater than or equal to the preset value, control the fuel heater to stop heating.

[0019] Optionally, the coolant preheating module includes a coolant temperature detector, a coolant preheating controller and a coolant heater, the coolant temperature detector is used to detect the coolant temperature, and the coolant heater is used to heat the coolant; the coolant preheating controller is configured to: in response to the coolant temperature being less than a preset value, control the coolant heater to work; in response to the coolant temperature being greater than or equal to the preset value, control the coolant heater to stop heating.

[0020] Optionally, the hydraulic oil preheating module includes a hydraulic oil temperature detector, a hydraulic oil preheating controller and a hydraulic oil heater, the hydraulic oil temperature detector is used to detect the hydraulic oil temperature, and the hydraulic oil heater is used to heat the hydraulic oil; the hydraulic oil preheating controller is configured to: in response to the hydraulic oil temperature being less than a preset value, control the hydraulic oil heater to work; in response to the hydraulic oil temperature being greater than or equal to the preset value, control the hydraulic oil heater to stop heating.

[0021] In a second aspect, the present application further provides a construction machinery on which the comprehensive preheating system for construction machinery described in the first aspect is provided.

[0022] Optionally, the engineering machinery is a wheeled crane.

[0023] Compared with the prior art, this application has at least the following beneficial effects:

[0024] This invention solves engine startup and machine operation issues without increasing operating costs or requiring switching to a suitable medium in the event of sudden temperature changes. Each preheating module can operate independently, preventing preheating modules from interfering with each other and preventing them from becoming inoperative. Battery preheating is externally powered, eliminating the problem of battery depletion. This can be achieved through temperature or battery discharge detection, making it easy to implement. The cab preheating module allows for independent cab heating control, shortening operator waiting time before operation and improving operator comfort and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] Figure 1 This is a schematic diagram of the principle of a comprehensive preheating system for engineering machinery according to an embodiment of the present application; DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only some embodiments of the present application, rather than all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application, its application, or use.

[0028] Example 1

[0029] like Figure 1 As shown, a comprehensive preheating system for engineering machinery includes:

[0030] Cab preheating module, used to heat the cab and operating room of construction machinery;

[0031] Coolant preheating module, used to heat the engine coolant of construction machinery;

[0032] Fuel preheating module, used to preheat the fuel system of construction machinery;

[0033] Oil preheating module, used to heat the engine lubricating oil of construction machinery;

[0034] Hydraulic oil preheating module, used to heat the hydraulic system of construction machinery on-board operations;

[0035] Battery preheating module, used to heat the battery of construction machinery;

[0036] The battery preheating module is heated by external power supply; the cab preheating module, coolant preheating module, fuel preheating module, oil preheating module and hydraulic oil preheating module are heated by battery or external power supply; the temperature of each preheating module is independently controlled.

[0037] By heating the engine coolant, fuel system, and engine oil, the resistance during engine startup is reduced, making engine startup easier; by heating the hydraulic system through the hydraulic oil preheating system, it is convenient to get on the vehicle and reduce waiting time for operation; through the cab preheating module and independent heating control in the cab, the waiting time before operation is shortened, and the working comfort and efficiency are improved.

[0038] This invention solves engine startup and onboard operation issues without increasing operating costs or requiring switching to a suitable medium in the event of sudden temperature changes. Each preheating module can operate independently, preventing them from interfering with each other and causing them to malfunction. Battery preheating is externally powered, eliminating the problem of battery depletion. This can be achieved through temperature or battery discharge detection, making it easy to implement.

[0039] Example 2

[0040] This embodiment differs from Example 1 in that the cab preheating module, coolant preheating module, and fuel preheating module are heated by battery power, while the engine oil preheating module, hydraulic oil preheating module, and battery preheating module are heated by external power. This energy distribution among the various preheating modules avoids the need for battery power.

[0041] The system also includes a first and second master controllers. The first master controller monitors the actual temperatures within the cab, coolant, and fuel preheating modules, and controls the power supply from the battery to these modules. The second master controller monitors the temperatures of the engine and hydraulic oil preheating modules, as well as the battery discharge level within the battery preheating module. It also controls the external power supply to these modules. These first and second master controllers control the power supply to each preheating module and monitor the module's temperature and battery activity (discharge level).

[0042] The battery preheating module includes a battery activity indicator, a battery preheating controller, and a battery heater. The battery activity indicator is used to detect the battery discharge amount, and the battery heater is used to heat the battery. The battery preheating controller is configured to: in response to the battery discharge amount being less than a preset value, control the battery heater to operate; in response to the battery discharge amount being greater than or equal to the preset value, control the battery heater to stop heating. The battery activity indicator includes a battery tester for detecting the battery discharge amount.

[0043] The cab preheating module includes a cab temperature detector, a cab preheating controller and a cab air heater. The cab temperature detector is used to detect the air temperature in the cab, and the cab air heater is used to heat the air in the cab. The cab preheating controller is configured to: in response to the air temperature in the cab being less than a preset value, control the cab air heater to work; in response to the air temperature in the cab being greater than or equal to the preset value, control the cab air heater to stop heating.

[0044] The fuel preheating module includes a fuel temperature detector, a fuel preheating controller and a fuel heater. The fuel temperature detector is used to detect the fuel temperature, and the fuel heater is used to heat the fuel. The fuel preheating controller is configured to: in response to the fuel temperature being less than a preset value, control the fuel heater to operate; in response to the fuel temperature being greater than or equal to the preset value, control the fuel heater to stop heating.

[0045] The coolant preheating module includes a coolant temperature detector, a coolant preheating controller and a coolant heater. The coolant temperature detector is used to detect the coolant temperature, and the coolant heater is used to heat the coolant. The coolant preheating controller is configured to: in response to the coolant temperature being less than a preset value, control the coolant heater to work; in response to the coolant temperature being greater than or equal to the preset value, control the coolant heater to stop heating.

[0046] The hydraulic oil preheating module includes a hydraulic oil temperature detector, a hydraulic oil preheating controller and a hydraulic oil heater. The hydraulic oil temperature detector is used to detect the hydraulic oil temperature, and the hydraulic oil heater is used to heat the hydraulic oil. The hydraulic oil preheating controller is configured to: in response to the hydraulic oil temperature being less than a preset value, control the hydraulic oil heater to work; in response to the hydraulic oil temperature being greater than or equal to the preset value, control the hydraulic oil heater to stop heating.

[0047] The oil preheating module includes an oil temperature detector, an oil preheating controller and an oil heater. The oil temperature detector is used to detect the oil temperature, and the oil heater is used to heat the oil. The oil preheating controller is configured to: in response to the oil temperature being less than a preset value, control the oil heater to work; in response to the oil temperature being greater than or equal to the preset value, control the oil heater to stop heating.

[0048] After entering preheating mode, in addition to independent monitoring by each module controller, the first master controller also monitors the temperatures of the fuel, cab air, and coolant. If the temperature of any of these media falls below the preset temperature for a cold engine start, a signal is sent back to the controller of the corresponding preheating system, controlling its operation until the temperature reaches or exceeds the preset temperature required for a cold engine start. The preheating modules operate independently and do not affect each other. The second master controller monitors the battery activity and the temperatures of the engine oil and hydraulic oil. If any of the following conditions occur: the battery activity falls below the discharge level required for a cold engine start, the engine oil temperature falls below the preset temperature for a cold engine start, or the hydraulic oil temperature falls below the preset temperature for vehicle loading operations, a signal is sent back to the controller of the corresponding preheating system, controlling its operation until the temperature reaches or exceeds the preset temperature required for a cold engine start. Each preheating module operates independently and does not affect each other. When the first and second master controllers indicate that the media temperatures meet the cold engine start requirements, an engine start signal is generated and sent back to the engine, allowing it to start.

[0049] This embodiment further provides a construction machine equipped with the comprehensive preheating system for construction machinery described in the first aspect. The construction machine may be a wheeled crane.

[0050] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0051] The above is only a preferred embodiment of the present application. 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 application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A comprehensive preheating system for construction machinery, characterized in that: include: Cab preheating module, used to heat the cab and operating room of construction machinery; Coolant preheating module, used to heat the engine coolant of construction machinery; Fuel preheating module, used to preheat the fuel system of construction machinery; Oil preheating module, used to heat the engine lubricating oil of construction machinery; Hydraulic oil preheating module, used to heat the hydraulic system of construction machinery on-board operations; Battery preheating module, used to heat the battery of construction machinery; The battery preheating module is heated by external power supply; the cab preheating module, coolant preheating module, fuel preheating module, oil preheating module and hydraulic oil preheating module are heated by batteries or external power supply; the temperature of each preheating module is independently controlled.

2. The comprehensive preheating system for construction machinery according to claim 1, characterized in that: The cab preheating module, coolant preheating module and fuel preheating module are heated by power supply from a battery; the engine oil preheating module, hydraulic oil preheating module and battery preheating module are heated by power supply from an external source.

3. The comprehensive preheating system for construction machinery according to claim 2, characterized in that: It also includes a first main controller and a second main controller. The first main controller is used to monitor the actual temperature of the battery in the cab preheating module, the coolant preheating module and the fuel preheating module and control the power supply from the battery to the cab preheating module, the coolant preheating module and the fuel preheating module; the second main controller is used to monitor the temperature of the oil preheating module and the hydraulic oil preheating module and the battery discharge amount of the battery preheating module, and at the same time, control the external power supply to the oil preheating module, the hydraulic oil preheating module and the battery preheating module.

4. The comprehensive preheating system for construction machinery according to claim 1, characterized in that: The battery preheating module includes a battery activity indicator, a battery preheating controller, and a battery heater. The battery activity indicator is used to detect the battery discharge amount, and the battery heater is used to heat the battery. The battery preheating controller is configured to: in response to the battery discharge amount being less than a preset value, control the battery heater to operate; in response to the battery discharge amount being greater than or equal to the preset value, control the battery heater to stop heating. The battery activity indicator includes a battery tester for detecting the battery discharge amount.

5. The comprehensive preheating system for construction machinery according to claim 1, characterized in that: The cab preheating module includes a cab temperature detector, a cab preheating controller and a cab air heater. The cab temperature detector is used to detect the air temperature in the cab, and the cab air heater is used to heat the air in the cab. The cab preheating controller is configured to: in response to the air temperature in the cab less than a preset value, control the cab air heater to work; in response to the air temperature in the cab greater than or equal to the preset value, control the cab air heater to stop heating.

6. The comprehensive preheating system for construction machinery according to claim 1, characterized in that: The fuel preheating module includes a fuel temperature detector, a fuel preheating controller, and a fuel heater. The fuel temperature detector is used to detect the fuel temperature, and the fuel heater is used to heat the fuel. The fuel preheating controller is configured to: in response to the fuel temperature being less than a preset value, control the fuel heater to operate; in response to the fuel temperature being greater than or equal to the preset value, control the fuel heater to stop heating.

7. The comprehensive preheating system for construction machinery according to claim 1, characterized in that: The coolant preheating module includes a coolant temperature detector, a coolant preheating controller, and a coolant heater. The coolant temperature detector is used to detect the coolant temperature, and the coolant heater is used to heat the coolant. The coolant preheating controller is configured to: in response to the coolant temperature being less than a preset value, control the coolant heater to operate. In response to the coolant temperature being greater than or equal to a preset value, the coolant heater is controlled to stop heating.

8. The comprehensive preheating system for construction machinery according to claim 1, characterized in that: The hydraulic oil preheating module includes a hydraulic oil temperature detector, a hydraulic oil preheating controller and a hydraulic oil heater. The hydraulic oil temperature detector is used to detect the hydraulic oil temperature, and the hydraulic oil heater is used to heat the hydraulic oil. The hydraulic oil preheating controller is configured to: in response to the hydraulic oil temperature being less than a preset value, control the hydraulic oil heater to work; in response to the hydraulic oil temperature being greater than or equal to the preset value, control the hydraulic oil heater to stop heating.

9. An engineering machine, characterized in that: The comprehensive preheating system for engineering machinery according to claims 1 to 8 is arranged thereon.

10. The engineering machine according to claim 9, characterized in that: The engineering machinery is a wheel crane.

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