Engineering truck

Abstract

The utility model discloses an engineering vehicle which comprises an engine, a heater and a control device. Wherein the engine is used for converting chemical energy into mechanical energy so as to provide power required by the engineering truck; the engine forms an engine pipeline; the engine body pipeline is used for containing a heat exchange working medium for cooling the engine cylinder body; the heater is provided with a heating cavity for heating a heat exchange working medium; the control device is used for controlling the heater to heat; a heating cavity of the heater communicates with an engine body pipeline of the engine so that the control device can enable the heater to heat the heat exchange working medium flowing out of the engine body pipeline at least when the rotating speed of the engine is smaller than the idling rotating speed. The engineering vehicle has the beneficial effect that the engineering vehicle can be suitable for both the high and cold environment and the general environment.

Description

Technical Field

[0001] The present application relates to the technical field of engineering machinery, and in particular to an engineering vehicle. Background Art

[0002] For construction machinery such as rock drilling rigs, down-the-hole drills, and scrapers, the engine outputs torque to achieve the functions of traveling, rock drilling, drilling, and scraping. At present, the engines of construction machinery on the market are generally internal combustion engines, and the engines of some models are electric motors. However, whether it is an engineering machinery equipped with an internal combustion engine or an electric motor, the engine has a high starting success rate in general use scenarios close to room temperature. After the engine is started, the main shaft of the engine can be gradually increased to 300rpm to 1200rpm (generally called idle speed) driven by the electric motor, etc. At this time, the engine can drive hydraulic pumps, air compressors and other loads to work. When used in extremely low temperatures (up to -10℃ and below) and low pressure environments such as plateau areas, the fuel, lubricating oil and other media in the engine, as well as the coolant circulating between the engine and the cooler to cool the engine when the engine is working, are easily affected by the external environment and have insufficient fluidity or even condensation, resulting in a lower starting success rate for the engine in a high-cold environment.

[0003] In the related art, the Chinese patent document with publication number CN111852666B discloses a cold start control method, control system and vehicle for a methanol engine, which reduces the possibility of nozzle icing by cutting off the methanol fuel supply at the moment of engine flameout and supplying fuel to the fuel injector, thereby improving the engine start success rate in a relatively low temperature environment. However, the related art does not disclose any technical inspiration for the problem that the engine is difficult to start successfully due to insufficient fluidity of the fuel in the engine before the engine is ignited. Summary of the invention

[0004] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0005] In order to solve the technical problems mentioned in the above background technology part, some embodiments of the present application provide a kind of engineering vehicle, including: an engine, a heater, and a control device; wherein the engine is used to convert chemical energy into mechanical energy to provide the power required by the engineering vehicle; the engine forms a body pipeline; the body pipeline is used to accommodate a heat exchange medium for cooling the engine cylinder; the heater is provided with a heating chamber for heating the heat exchange medium; the control device is used to control whether the heater is heated; the heating chamber of the heater is connected to the body pipeline of the engine so that the control device enables the heater to heat the heat exchange medium flowing out of the body pipeline at least when the engine speed is less than the idle speed.

[0006] Furthermore, the engineering vehicle also includes: a first pipeline; wherein the first pipeline is used to connect the liquid inlet of the body pipeline and the liquid inlet of the heating chamber; the first pipeline is connected between the liquid inlet of the body pipeline and the liquid inlet of the heating chamber.

[0007] Furthermore, the engineering vehicle also includes: a first valve; wherein the first valve is used to control the conduction or disconnection of the first pipeline; the first valve is connected to the first pipeline and is located between the body pipeline and the heating chamber.

[0008] Furthermore, the engineering vehicle also includes: a second pipeline; wherein the second pipeline is used to connect the liquid outlet of the heating chamber and the liquid inlet of the body pipeline.

[0009] Furthermore, the engineering vehicle also includes: a second valve; wherein the second valve is used to control the conduction or disconnection of the second pipeline.

[0010] Furthermore, the engineering vehicle also includes: a cooler; wherein the cooler is used to cool the heat exchange medium discharged from the body pipeline; the liquid inlet of the body pipeline is connected to the liquid outlet of the cooler.

[0011] Furthermore, the engineering vehicle also includes: a working fluid pump; wherein the working fluid pump is used to pump the heat exchange working fluid into the body pipeline; the liquid inlet of the working fluid pump is connected to the liquid outlet of the heating chamber; the liquid outlet of the working fluid pump is connected to the liquid inlet 111a of the body pipeline.

[0012] Furthermore, the engineering vehicle also includes: a thermostat; wherein the thermostat is used to control whether the heating chamber is connected to the cooler; the thermostat is arranged between the liquid outlet of the heating chamber and the liquid inlet of the cooler.

[0013] Furthermore, the heater is a fuel heater.

[0014] Furthermore, the engineering vehicle also includes: an electromagnetic pump; wherein the electromagnetic pump is used to pump the fuel required for the operation of the fuel heater to the fuel heater so that the fuel in the fuel heater completes heat exchange with the heat exchange medium in the heating chamber.

[0015] The beneficial effect of the present application is that it provides an engineering vehicle that is applicable to both high-cold environments and general environments.

[0016] More specifically, some embodiments of the present application may have the following specific beneficial effects:

[0017] The engineering vehicle of the present application does not need to be preheated by a heater before the engine is started in general use scenarios. When used in a high-cold environment, the heater can be used to heat the heat exchange medium in the engine heat exchange cavity before the engine is started, and then the heat exchange medium can be used to preheat the engine, so that when the engine is started, the temperature of the engine itself rises, which is conducive to the normal functioning of the lubricating oil, fuel and other media inside the engine, so that the engine of the engineering vehicle can be started and used normally in both high-cold environments and general use scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0019] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0020] In the attached picture:

[0021] Figure 1 is a schematic diagram of the connection relationship between the engine and the heater in an engineering vehicle according to an embodiment of the present application;

[0022] Figure 2 yes Figure 1 Schematic diagram of the structure of the pipeline forming the body pipeline.

[0023] The meaning of the reference numerals in the accompanying drawings:

[0024] 110, engine; 111, engine body pipeline; 111a, liquid inlet of engine body pipeline; 111b, liquid inlet of engine body pipeline;

[0025] 120. Heater;

[0026] 130. Control device;

[0027] 140. a first pipeline; 141. a first valve;

[0028] 150. second pipeline; 151. second valve;

[0029] 160. Working fluid pump;

[0030] 170. Thermostat;

[0031] 180. Electromagnetic pump;

[0032] 190. Cooler. DETAILED DESCRIPTION

[0033] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0034] It should also be noted that, for ease of description, only the parts related to the present application are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0035] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0036] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0037] refer to Figure 1 to Figure 2 The present application discloses an engineering vehicle, comprising: an engine 110, a heater 120, a control device 130, and a cooler 190. The engine 110 is used to convert chemical energy into mechanical energy to provide the power required by the engineering vehicle. The engine 110 forms a body pipeline 111. The body pipeline 111 is used to accommodate a heat exchange medium for cooling the cylinder of the engine 110.

[0038] Among them, the engine 110 can be an electric motor or an internal combustion engine. In this application, unless otherwise stated, the engine 110 is generally regarded as an internal combustion engine, that is, the engine 110 is a device for converting chemical energy into mechanical energy to provide the power required by the engineering vehicle. The engine 110 forms a body pipeline 111. The body pipeline 111 is used to accommodate a heat exchange medium for cooling the cylinder of the engine 110, and the heat exchange medium can be a coolant. In general use scenarios, when the engine 110 is working, the heat exchange medium exchanges heat with the casing of the engine 110, thereby cooling the casing and preventing the engine 110 from overheating.

[0039] Specifically, the cooler 190 is used to cool the heat exchange medium discharged from the body pipeline 111. The cooler 190 is a common device for cooling the heat exchange medium in the technical field. The present application does not improve its structure, and its structure and principle are not repeated here. The liquid inlet of the heating chamber is connected to the liquid outlet of the cooler 190. After the heat exchange medium exchanges heat with the engine 110 shell in the heating chamber, the heat exchange medium heats up. At this time, the cooler 190 intervenes, and the heat exchange medium enters the cooler 190 from the liquid inlet of the cooler 190 to cool the heat exchange medium. After the heat exchange medium cools down, it flows into the body pipeline 111 from the liquid outlet of the cooler 190, and exchanges heat with the shell of the engine 110 again, thereby completing the cooling of the engine 110 through the circulation of the heat exchange medium between the engine 110 and the cooler 190.

[0040] In a cold environment, the fluidity of the heat exchange medium, the lubricating oil in the engine 110, etc. deteriorates, and the temperature of the engine 110 shell decreases, which is not conducive to the starting of the engine 110. In order to improve the success rate of starting the engine 110 of the engineering vehicle in a cold environment. The present application further provides a heater 120 to heat the heat exchange medium. Specifically, the heater 120 is provided with a heating chamber for heating the heat exchange medium, and the heat exchange medium can flow into the heating chamber. Before the engine 110 is started, the heat exchange medium in the heating chamber is heated and heated, so that the fluidity of the heat exchange medium in at least the heating chamber is improved, and the change in its temperature restores the fluidity of the heat exchange medium between the heater 120 and the engine 110, and heats up the heat exchange medium in the body pipeline 111, thereby exchanging heat with the shell of the engine 110, so that the engine 110 is preheated, and the fluidity of the lubricating oil between the various components of the engine 110 is enhanced. The heat exchange medium cools down after exchanging heat with the shell of the engine 110, but because the heater 120 continues to heat the heat exchange medium in the heating chamber, the shell of the engine 110 can continue to exchange heat with the heat exchange medium to prevent the engine 110 from being affected by the external cold weather and cooling down again.

[0041] In this way, after the heat exchange medium is continuously heated for a period of time, for example, 20 minutes to 40 minutes, the engine 110 can be started normally. At this time, the shell temperature of the engine 110 is higher than before heating, and the fluidity of internal lubricating oil and other substances is restored, thereby improving the success rate of starting the engine 110 and making the engineering vehicle suitable for use in high-cold environments.

[0042] Specifically, a control device 130 is provided on the engineering vehicle. The control device 130 is used to control whether the heater 120 is heated. The controller may be a conventional combination of a PLC and a relay, or a control chip loaded with a control program. The heating chamber of the heater 120 is connected to the body pipeline 111 of the engine 110 so that the control device 130 enables the heater 120 to heat the heat exchange medium flowing out of the body pipeline 111 at least when the speed of the engine 110 is less than the idle speed. That is, in addition to preheating the engine 110 before the engine 110 is started, the engine 110 can also be continuously heated during the process of starting the engine 110 until the speed of the engine 110 is increased to a level that can normally drive the loads such as the hydraulic pump and the air compressor connected to the engine 110 to work, thereby reducing the possibility of the engine 110 being turned off midway. After the engine 110 is working normally, the heater 120 stops heating, and the cooler 190 intervenes to allow the heat exchange medium to exchange heat with the engine 110 when the engine 110 is working normally, thereby reducing the temperature of the engine 110.

[0043] It should be noted that when the engineering vehicle adopting the above solution is used in general use scenarios, if the heater 120 is used to heat the heat exchange medium before and during the engine 110 starts, it will increase energy consumption on the one hand, and may also cause overheating during the engine 110 starts on the other hand. Therefore, by setting the control device 130, it is also possible to further set program control on the control device 130, so that when the engineering vehicle works in general use scenarios, before and during the engine 110 starts, the heater 120 is controlled not to work, thereby avoiding overheating of the engine 110 during the start-up process.

[0044] In this way, the engineering vehicle can have a relatively higher starting success rate in both high-cold environments and general usage scenarios, making the engineering vehicle suitable for use in various environments.

[0045] Specifically, the engineering vehicle further includes: a first pipeline 140. The first pipeline 140 is used to connect the liquid outlet of the body pipeline 111 and the liquid inlet of the heating chamber. The first pipeline 140 is connected between the liquid outlet of the body pipeline 111 and the liquid inlet of the heating chamber. That is, the heat exchange medium can flow from the liquid outlet of the body pipeline 111 to the liquid inlet of the heating chamber through the first pipeline 140, and then enter the heating chamber.

[0046] More specifically, the engineering vehicle further includes: a first valve 141. The first valve 141 is used to control the conduction or disconnection of the first pipeline 140. The first valve 141 is connected to the first pipeline 140 and is located between the body pipeline 111 and the heating chamber. Optionally, the first valve 141 can be a manual valve or a solenoid valve.

[0047] Specifically, the engineering vehicle further includes: a second pipeline 150. The second pipeline 150 is used to connect the liquid outlet of the heating chamber and the liquid inlet of the body pipeline 111. That is, the heat exchange medium can flow from the liquid outlet of the heating chamber to the liquid inlet of the body pipeline 111 through the second pipeline 150, and then enter the body pipeline 111 to achieve heat exchange with the shell of the engine 110.

[0048] More specifically, the engineering vehicle further includes: a second valve 151. The second valve 151 is used to control the conduction or disconnection of the second pipeline 150. The second valve 151 is connected to the second pipeline 150 and is located between the body pipeline 111 and the heating chamber. Optionally, the second valve 151 can be a manual valve or a solenoid valve.

[0049] Specifically, the engineering vehicle further includes: a working fluid pump 160. The working fluid pump 160 is used to pump the heat exchange working fluid 160 into the body pipeline 111. The liquid inlet of the working fluid pump 160 is connected to the liquid outlet of the heating chamber. The liquid outlet of the working fluid pump 160 is connected to the liquid inlet of the body pipeline 111. That is, by pumping the heat exchange working fluid by the working fluid pump 160, the heat exchange working fluid is circulated between the heater 120 and the engine 110 to improve the heat exchange efficiency.

[0050] Optionally, the liquid inlet of the working fluid pump 160 can be connected to the liquid outlet of the cooler 190, that is, when the cooler 190 is used to cool the heat exchange working fluid, the heat exchange working fluid is pumped through the working fluid pump 160 to realize the circulation of the heat exchange working fluid between the cooler 190 and the engine 110. At this time, an electric control valve should be integrated between the liquid inlet of the working fluid pump 160 and the liquid outlet of the cooler 190, or in the cooler 190, so that when the cooler 190 is used to cool the heat exchange working fluid, the electric control valve is opened to allow the heat exchange working fluid pump 160 in the cooler 190 to be delivered to the body pipeline 111. When the heater 120 is used to heat the heat exchange working fluid, the electric control valve is closed to prevent the heat exchange working fluid pump 160 in the cooler 190 from being delivered to the body pipeline 111.

[0051] In this way, the heater 120 only needs to heat the first pipeline 140, the second pipeline 150, the body pipeline 111 and the heat exchange medium in the heating chamber, so that the temperature rise of the heat exchange medium in the same time period is greater to improve the heating efficiency.

[0052] Specifically, the engineering vehicle also includes: a thermostat 170. Among them, the thermostat 170 is used to control whether the heating chamber is connected to the cooler 190. The thermostat 170 is arranged between the liquid outlet of the heating chamber and the liquid inlet of the cooler 190. An electrically controlled valve is integrated on the thermostat 170. When the heater 120 is used to heat the heat exchange medium, the electrically controlled valve of the thermostat 170 is closed to prevent the heat exchange medium from flowing from the liquid outlet of the body pipeline 111 to the liquid inlet of the cooler 190. When the cooler 190 is used to cool the heat exchange medium, the electrically controlled valve of the thermostat 170 is opened, and the heat exchange medium can flow from the liquid outlet of the body pipeline 111 to the liquid inlet of the cooler 190. The thermostat 170 is a commonly used component for pipeline on-off control. Its structure and principle will not be repeated here, and its specific structure is not given in the accompanying drawings.

[0053] As an optional specific implementation scheme, the heater 120 is a fuel heater 120, that is, the heater 120 heats the heat exchange medium by igniting the fuel on the engineering vehicle. The fuel heater 120 can be purchased from the market, for example, the YJH-Q10A heater of Beijing Jingwei Automobile Equipment Co., Ltd. can be used, and its structure and principle are not described here.

[0054] Specifically, the engineering vehicle further includes an electromagnetic pump 180. The electromagnetic pump 180 is used to pump the fuel required for the operation of the fuel heater 120 to the fuel heater 120 so that the fuel in the fuel heater 120 completes heat exchange with the heat exchange medium in the heating chamber. That is, the liquid inlet of the electromagnetic pump 180 is connected to the fuel tank of the engineering vehicle, and the liquid outlet of the electromagnetic pump 180 is connected to the structure of the heater 120 used to ignite the fuel, so as to supply fuel to the heater 120 when the heater 120 is working.

[0055] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. An engineering vehicle, comprising: An engine, used to convert chemical energy into mechanical energy to provide the power required by the engineering vehicle; Wherein, the engine is formed by: A body pipeline, used to contain a heat exchange medium for cooling the engine cylinder body; Features: The engineering vehicle also includes: A heater, provided with a heating chamber for heating the heat exchange medium; A control device, used for controlling whether the heater performs heating; The heating chamber of the heater is connected to the body pipeline of the engine so that the control device enables the heater to heat the heat exchange medium flowing out of the body pipeline at least when the engine speed is less than the idle speed.

2. The engineering vehicle according to claim 1, characterized in that: The engineering vehicle also includes: A first pipeline, used to connect the liquid inlet of the body pipeline and the liquid inlet of the heating chamber; Wherein, the first pipeline is connected between the liquid inlet of the body pipeline and the liquid inlet of the heating chamber.

3. The engineering vehicle according to claim 2, characterized in that: The engineering vehicle also includes: A first valve, used to control the conduction or disconnection of the first pipeline; Wherein, the first valve is connected to the first pipeline and is located between the body pipeline and the heating chamber.

4. The engineering vehicle according to claim 3, characterized in that: The engineering vehicle also includes: The second pipeline is used to connect the liquid outlet of the heating chamber and the liquid inlet of the body pipeline.

5. The engineering vehicle according to claim 4, characterized in that: The engineering vehicle also includes: The second valve is used to control the conduction or disconnection of the second pipeline.

6. The engineering vehicle according to any one of claims 1 to 5, characterized in that: The engineering vehicle also includes: A cooler, used to cool the heat exchange medium discharged from the pipeline of the machine body; Wherein, the liquid inlet of the heating chamber is connected to the liquid outlet of the cooler.

7. The engineering vehicle according to claim 6, characterized in that: The engineering vehicle also includes: A working fluid pump, used for pumping the heat exchange working fluid into the body pipeline; Wherein, the liquid inlet of the working fluid pump is communicated with the liquid outlet of the heating chamber; and the liquid outlet of the working fluid pump is communicated with the liquid inlet (111a) of the body pipeline.

8. The engineering vehicle according to claim 6, characterized in that: The engineering vehicle also includes: A thermostat, used to control whether the body pipeline is connected to the cooler; Wherein, the thermostat is arranged between the liquid outlet of the heating chamber and the liquid inlet of the cooler.

9. The engineering vehicle according to claim 8, characterized in that: The heater is a fuel heater.

10. The engineering vehicle according to claim 9, characterized in that: The engineering vehicle also includes: The electromagnetic pump is used to pump the fuel required for the operation of the fuel heater to the fuel heater so that the fuel in the fuel heater completes heat exchange with the heat exchange medium in the heating chamber.

Images