Carriage floating air inlet device of off-highway mining dump truck and off-highway mining dump truck

Abstract

The utility model relates to the technical field of dumper tail gas utilization, in particular to a compartment floating air inlet device of an off-highway mining dumper and the off-highway mining dumper. The compartment floating air inlet device comprises an air inlet pipe with a connecting disc arranged at the bottom, and a disc connecting hole is formed in the connecting disc. The floating flange comprises a flange plate, a flange connecting hole is formed in the flange plate, and the flange plate is connected with the flange circular pipe; the connecting bolts sequentially penetrate through the flange connecting holes, the disc connecting holes and the connecting nuts, and springs are arranged on the connecting bolts. The off-highway mining dump truck comprises a main machine frame provided with an engine, the engine is connected with an engine tail gas pipeline, and an engine tail gas exhaust port is formed in the tail end of the engine tail gas pipeline. The carriage is rotationally connected with the main machine frame through a carriage hinge shaft, a carriage flue air inlet hole is formed in the carriage, and the carriage flue air inlet hole is connected with the carriage floating air inlet device. The device can prevent engine tail gas from leaking and improve the utilization rate of the engine tail gas.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas utilization of dump trucks, and particularly relates to a carriage floating air intake device for a non-road mining dump truck and a non-road mining dump truck. Background Technique

[0002] A non-road mining dump truck refers to a special load-carrying vehicle used for short-distance transportation to complete the tasks of rock and soil stripping and ore transportation on special roads such as open-pit mines or large-scale civil engineering sites. The carriage of the non-road mining dump truck provides a loading space for materials and serves as the operating structure for loading and unloading materials. During the loading and unloading operation of the non-road mining bicycle, the carriage rotates reciprocally around the rear hinge axis with the vehicle frame.

[0003] During the operation of a non-road mining dump truck, a large amount of high-temperature engine tail gas is generated. In order to make the best use of the heat in the engine tail gas as much as possible and avoid the materials freezing and sticking to the carriage when loading materials in a low-temperature environment, the existing non-road mining dump trucks generally set up an engine tail gas pipeline connected to the engine. An engine tail gas discharge port is arranged at the end of the engine tail gas pipeline, and an air intake device corresponding to the position of the engine tail gas discharge port is arranged on the carriage. The air intake device is connected to the flue. During operation, the engine tail gas will pass through the engine tail gas pipeline, the engine tail gas discharge port, and the air intake device in sequence and enter the flue to heat the materials in the carriage to prevent the materials from freezing. The air intake device of the existing non-road mining dump truck is generally a relatively simple intake pipe.

[0004] However, during the operation of a non-road mining dump truck, due to the need for loading and unloading goods, the carriage needs to be lifted and lowered repeatedly. In order to avoid direct impact between the intake pipe and the engine tail gas discharge port when the carriage descends, generally, a gap is left between the intake pipe and the engine tail gas discharge port when the carriage is in the descending state, which leads to partial leakage of the engine tail gas into the atmosphere. At the same time, during the repeated lifting and lowering of the carriage, there may be left-right misalignment and horizontal angle misalignment between the intake pipe and the engine tail gas discharge port, further resulting in a large amount of leakage of the engine tail gas, low heat utilization rate of the engine tail gas, and pollution. Content of the Utility Model

[0005] In view of the technical problems that there is a gap between the intake pipe and the engine exhaust outlet of the existing off-road mining dump truck, and during the lifting and lowering process of the carriage, there may be left-right misalignment and horizontal angle misalignment between the intake pipe and the engine exhaust outlet, resulting in engine exhaust leakage, low heat utilization rate of the engine exhaust, and pollution, the present utility model provides a floating intake device for the carriage of an off-road mining dump truck and an off-road mining dump truck, which sets a floating flange that can be movably connected to the connecting disc, can fill the gap between the intake pipe and the engine exhaust outlet, and compensate for the left-right misalignment and horizontal angle misalignment that may occur each time the carriage lands on the main frame, prevent engine exhaust leakage, and improve the heat utilization rate of the engine exhaust; at the same time, it can avoid the direct collision between the intake pipe and the exhaust outlet, and improve the service life.

[0006] In the first aspect, the present utility model provides a floating intake device for the carriage of an off-road mining dump truck, including an intake pipe, a connecting disc is arranged at the bottom of the intake pipe, and at least three disc connection holes are arranged on the connecting disc; it also includes a floating flange, the floating flange includes a flange disc, and flange connection holes corresponding to the positions of the disc connection holes are arranged on the flange disc, the flange disc is connected to a flange round pipe, and the outer diameter of the flange round pipe is smaller than the inner diameter of the intake pipe; connecting bolts sequentially pass through the flange connection holes, the disc connection holes and connecting nuts, so that the flange round pipe extends into the intake pipe; a spring is arranged on the connecting bolts, and the spring is located between the flange disc and the connecting disc.

[0007] Further, a buffer gasket is laid on the side of the flange disc away from the connecting disc, which can prevent the flange disc from directly colliding with the engine exhaust outlet of the off-road mining dump truck and being damaged during use, and improve the service life of the floating intake device.

[0008] Further, the material of the buffer gasket is fireproof cotton, which can withstand the high temperature of the engine exhaust and improve the service life of the fireproof cotton.

[0009] Further, the materials of the intake pipe, the connecting disc and the floating flange are stainless steel.

[0010] Further, a fastening nut is fixed on the part of the connecting bolt passing through the connecting nut, and the fastening nut can prevent the connecting nut from slipping off the connecting bolt.

[0011] Further, washers are arranged between the connecting bolt and the flange disc, and between the connecting nut and the connecting disc.

[0012] In a second aspect, the present utility model provides a non-road mining dump truck using the above-described carriage floating air intake device, which includes a main frame. An engine is provided on the main frame, and the engine is connected to an engine exhaust gas pipeline. The engine exhaust gas pipeline is fixed on the main frame, and an engine exhaust gas discharge port is provided at the end of the engine exhaust gas pipeline. The carriage is rotatably connected to the main frame through a carriage hinge shaft, and a carriage flue gas intake hole is provided on the carriage. In the state where the carriage is lowered, the position of the carriage flue gas intake hole is opposite to that of the engine exhaust gas discharge port, and the carriage flue gas intake hole is communicated with the engine exhaust gas discharge port through the carriage floating air intake device.

[0013] Further, in the state where the carriage is lowered, the flange plate fits with the engine exhaust gas discharge port, and the intake pipe is fixedly connected to the carriage flue gas intake hole.

[0014] Further, the outer diameter of the flange plate is larger than the inner diameter of the engine exhaust gas discharge port.

[0015] The beneficial effects of the present utility model are as follows:

[0016] In the present utility model, an intake pipe and a connecting disc are connected to the carriage flue gas intake hole of the non-road mining dump truck, and a floating flange is provided. The floating flange is movably connected to the connecting disc through a connecting bolt and a connecting nut, and a spring is provided on the connecting bolt. When the carriage of the non-road mining dump truck is in the lowered state, the flange plate of the floating flange can fit on the exhaust gas discharge port, filling the gap between the intake pipe and the engine exhaust gas discharge port, preventing the leakage of engine exhaust gas, and improving the utilization rate of the heat in the engine exhaust gas. During the repeated lifting and lowering of the carriage, the floating flange can effectively compensate for the possible left-right misalignment and horizontal angle misalignment generated each time the carriage lands on the main frame, so that the flange plate of the floating flange always fits the exhaust gas discharge port, further avoiding the leakage of engine exhaust gas. At the same time, the spring provided on the connecting bolt can provide buffering for the floating flange, avoiding direct collision between the intake pipe and the exhaust gas discharge port, and improving the service life of the carriage floating air intake device. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of the carriage floating air intake device in Embodiment 1.

[0019] Figure 2 It is a schematic structural diagram of the main frame and the carriage of the non-road mining dump truck in Embodiment 2.

[0020] In the figure, 1 is the floating air intake device of the carriage, 11 is the intake pipe, 12 is the connecting disc, 13 is the flange, 14 is the flange round pipe, 15 is the connecting bolt, 16 is the connecting nut, 17 is the fastening nut, 18 is the spring, 2 is the main frame, 3 is the engine, 31 is the engine exhaust gas pipe, 32 is the engine exhaust gas discharge port, and 4 is the carriage. Specific embodiments

[0021] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Embodiment 1

[0023] A floating air intake device for the carriage of a non-road mining dump truck includes an intake pipe 11. A connecting disc 12 is provided at the bottom of the intake pipe 11. Four disc connection holes are provided on the connecting disc 12. The intake pipe 11 and the connecting disc 12 are made of stainless steel.

[0024] It further includes a floating flange. The floating flange is made of stainless steel and includes a flange 13. Four flange connection holes corresponding to the positions of the disc connection holes are provided on the flange 13. The flange 13 is connected to a flange round pipe 14. The outer diameter of the flange round pipe 14 is smaller than the inner diameter of the intake pipe 11.

[0025] The connecting bolt 15 sequentially passes through the flange connection hole, the disc connection hole and the connecting nut 16, so that the flange round pipe 14 extends into the intake pipe 11. The connecting nut 16 and the screw of the connecting bolt 15 can move to a certain extent relative to the upper end of the connecting disc 12. A fastening nut 17 is fixed to the part of the connecting bolt 15 passing through the connecting nut 16. Washers are provided between the connecting bolt 15 and the flange 13, and between the connecting nut 16 and the connecting disc 12. A spring 18 is provided on the connecting bolt 15. The spring 18 is located between the flange 13 and the connecting disc 12. A buffer gasket is laid on the side of the flange 13 away from the connecting disc 12. The buffer gasket is made of fireproof cotton.

[0026] Embodiment 2

[0027] An off-highway mining dump truck using the carriage floating air intake device in Embodiment 1 includes a main frame 2, an engine 3 is arranged on the main frame 2, the engine 3 is connected to an engine exhaust gas pipeline 31, the engine exhaust gas pipeline 31 is fixed on the main frame 2, and an engine exhaust gas discharge port 32 is arranged at the end of the engine exhaust gas pipeline 31; the carriage 4 is rotatably connected to the main frame 2 through a carriage hinge shaft, a carriage flue gas intake hole is arranged on the carriage 4, and the carriage flue gas intake hole is connected to the carriage floating air intake device 1;

[0028] When the carriage 4 is in the lowered state, the position of the carriage flue gas intake hole is opposite to that of the engine exhaust gas 32 discharge port, the carriage flue gas intake hole is communicated with the engine exhaust gas discharge port 32 through the carriage floating air intake device 1, the flange 13 is attached to the engine exhaust gas discharge port 32, and the outer diameter of the flange 13 is larger than the inner diameter of the engine exhaust gas discharge port 32.

[0029] Although the present invention has been described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, those of ordinary skill in the art can make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions should all be within the scope of the present invention / Any person skilled in the art in the technical field disclosed by the present invention can easily think of changes or substitutions within the technical scope disclosed by the present invention, and all should be covered within the protection scope of the present invention.

Claims

1. A floating air intake device for a compartment of an off-road mining dump truck, comprising an air intake pipe, characterized in that: A connecting disc is arranged at the bottom of the air intake pipe, and at least three disc connecting holes are arranged on the connecting disc; it also includes a floating flange, and the floating flange includes a flange plate, and flange connecting holes corresponding to the positions of the disc connecting holes are arranged on the flange plate, and the flange plate is connected to the flange circular tube, and the outer diameter of the flange circular tube is smaller than the inner diameter of the air intake pipe; the connecting bolts pass through the flange connecting holes, the disc connecting holes and the connecting nuts in sequence, so that the flange circular tube extends into the air intake pipe; a spring is arranged on the connecting bolt, and the spring is located between the flange plate and the connecting disc.

2. The vehicle compartment floating air intake device according to claim 1, characterized in that: A buffer gasket is laid on the side of the flange away from the connecting disc.

3. The vehicle compartment floating air intake device according to claim 2, characterized in that: The material of the buffer gasket is fireproof cotton.

4. The vehicle compartment floating air intake device according to claim 1, characterized in that: The inlet pipe, connecting disc and floating flange are made of stainless steel.

5. The vehicle compartment floating air intake device according to claim 1, characterized in that: The portion of the connecting bolt that passes through the connecting nut is fixed with a fastening nut.

6. The vehicle compartment floating air intake device according to claim 1, characterized in that: Washers are arranged between the connecting bolts and the flange, and between the connecting nuts and the connecting disc.

7. An off-road mining dump truck using the vehicle body floating air intake device according to claim 1, comprising a main frame, an engine is arranged on the main frame, and characterized in that: The engine is connected to the engine exhaust pipe, the engine exhaust pipe is fixed on the main frame, and an engine exhaust outlet is arranged at the end of the engine exhaust pipe; the car is rotatably connected to the main frame through a car hinge shaft, and a car flue air inlet is arranged on the car; when the car is in the lowered state, the car flue air inlet is opposite to the engine exhaust outlet, and the car flue air inlet is connected to the engine exhaust outlet through a car floating air intake device.

8. The off-road mining dump truck according to claim 7, characterized in that: When the car body is in the lowered state, the flange fits against the exhaust outlet of the engine, and the air intake pipe is fixedly connected to the air intake hole of the car body flue.

9. The off-road mining dump truck according to claim 8, characterized in that: The outer diameter of the flange is larger than the inner diameter of the engine exhaust outlet.

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