Air inlet duct of air-cooled diesel engine of unmanned vehicle

Abstract

The air inlet duct comprises an air inlet duct box body with openings in the left end and the right end, the opening in the left end of the air inlet duct box body serves as an air inlet and is fixedly connected with a vehicle body through bolts, and the opening in the right end of the air inlet duct box body serves as an air outlet and is connected with an air inlet of the air-cooled diesel engine through a connecting flange. The air inlet duct box body is formed by welding a flange plate on the left side, a top plate on the top, an arc plate at the bottom, a front side plate, a rear side plate and a right side plate, the right side plate is formed by welding a transition plate on the upper portion and a connecting plate on the lower portion, a first opening in the flange plate serves as an air inlet, and a second opening in the connecting plate serves as an air outlet. The anti-rust aluminum plate is formed by bending and welding seven anti-rust aluminum plates with the thickness of 2mm, the weight of the anti-rust aluminum plate is only 1.65 kg, and the anti-rust aluminum plate has the advantages of being light in weight, reasonable in trend, capable of avoiding turning, capable of reducing pipeline resistance and good in sealing performance.

Description

Technical Field

[0001] The utility model relates to an air intake duct for an air-cooled diesel engine of an unmanned vehicle. Background Art

[0002] Most of the power of armored vehicles uses water-cooled or air-cooled diesel engines. Small generator sets are increasingly widely used because of the simple structure and light weight of air-cooled diesel engines. The air intake and exhaust system of air-cooled diesel engines in enclosed spaces has always been the key to the entire unit. The unmanned vehicle has a light overall weight, so there are high requirements for the design of the air intake duct. How to design an air intake duct with light weight, reasonable routing, avoiding turning, reducing pipeline resistance, and good sealing performance is particularly important. Summary of the Invention

[0003] In order to solve the above technical problems, the utility model provides an air intake duct for an air-cooled diesel engine of an unmanned vehicle with a simple structure and reliable operation.

[0004] The technical solution of the utility model to solve the above technical problems is: an air intake duct for an air-cooled diesel engine of an unmanned vehicle, including an air intake duct box body with openings at both left and right ends. The left-end opening of the air intake duct box body serves as an air inlet and is fixedly connected to the vehicle body through bolts. The right-end opening of the air intake duct box body serves as an air outlet and is connected to the air inlet of the air-cooled diesel engine through a connecting flange.

[0005] For the above air intake duct for an air-cooled diesel engine of an unmanned vehicle, the air intake duct box body is welded by a flange plate on the left side, a top plate on the top, an arc plate on the bottom, a front side plate, a rear side plate, and a right side plate. The right side plate is welded by a transition plate above and a connecting plate below. The first opening on the flange plate serves as the air inlet, and the second opening on the connecting plate serves as the air outlet.

[0006] For the above air intake duct for an air-cooled diesel engine of an unmanned vehicle, the cross-sectional area of the air inlet is 30600 mm 2 , and the radian of the arc plate is designed to avoid the vehicle body skeleton of the transmission shaft. The maximum arc surface distance between the arc plate and the transmission shaft is 20 mm.

[0007] For the above air intake duct for an air-cooled diesel engine of an unmanned vehicle, the entire air intake duct box body has a circular arc transition, and the area of each transition section is larger than the air intake area of the air-cooled diesel engine.

[0008] For the above air intake duct for an air-cooled diesel engine of an unmanned vehicle, a dust discharge hole is provided at the bottom of the arc plate.

[0009] For the above air intake duct for an air-cooled diesel engine of an unmanned vehicle, the connecting flange is sewn by two aluminum plates and a waterproof rain cloth located between the two aluminum plates, and the entire connecting flange is a flexible connection.

[0010] For the above-mentioned air intake duct of the unmanned vehicle's air-cooled diesel engine, one side of the connecting flange faces the second opening on the connecting plate and is bolted to the connecting plate, and the other side of the connecting flange is connected to the flange at the air inlet of the air-cooled diesel engine.

[0011] For the above-mentioned air intake duct of the unmanned vehicle's air-cooled diesel engine, a first gasket is provided outside the flange plate.

[0012] For the above-mentioned air intake duct of the unmanned vehicle's air-cooled diesel engine, a second gasket is provided at the connection between the other side of the connecting flange and the flange at the air inlet of the air-cooled diesel engine.

[0013] For the above-mentioned air intake duct of the unmanned vehicle's air-cooled diesel engine, the flange plate, the top plate, the arc plate, the front side plate, the rear side plate, the transition plate and the connecting plate are all made of 2-mm anti-rust aluminum plate.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. The air intake duct box of the present utility model is formed by bending and welding 7 pieces of 2-mm thick anti-rust aluminum plates, with a weight of only 1.65 kg, and the cross-sectional area of the air inlet is 30,600 mm 2 , meeting the requirement of 27,465 mm 2 of the air-cooled diesel engine.

[0016] 2. The radian of the arc plate of the present utility model is specially designed to avoid the drive shaft vehicle body frame, with a distance of 20 mm from the largest arc surface of the drive shaft. The entire box has an arc transition, and the area of each transition section is larger than the air intake area of the air-cooled diesel engine. The air intake duct box has good processability, is simple to manufacture, firm and reliable, and has the advantages of light weight, reasonable routing, avoiding turning, reducing pipeline resistance and good sealing performance.

[0017] 3. The entire connecting flange of the present utility model is a flexible connection, which solves the error caused by spatial misalignment between the vehicle body and the air-cooled diesel engine, and improves the convenience of disassembly, installation, maintenance and repair.

[0018] 4. The first gasket and the second gasket of the present utility model are both made of 3-mm rubber plate. The rubber plate has high heat resistance. It is bonded to the flange surface with sealant and will not age due to the high temperature in the power compartment. The rubber plate has a certain compression amount and can play a role in adjusting the axial installation amount together with the connecting flange, with good sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present utility model.

[0020] Figure 2 is a schematic diagram of the installation position of the present utility model.

[0021] Figure 3 is a schematic diagram of the structure of the air intake duct box.

[0022] Figure 4 It is a structural schematic diagram of a connecting flange. Specific embodiments

[0023] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] As Figure 1 、 Figure 2 shown, an air intake duct for an unmanned vehicle air-cooled diesel engine includes an air intake duct box body 1 with openings at both left and right ends. The left-end opening of the air intake duct box body 1 serves as an air inlet and is fixedly connected to the vehicle body 2 by bolts. The right-end opening of the air intake duct box body 1 serves as an air outlet and is connected to the air inlet 4 of the air-cooled diesel engine through a connecting flange 3.

[0025] As Figure 3 shown, the air intake duct box body 1 is welded by a flange plate 5 on the left side, a top plate 6, an arc plate 7 at the bottom, a front side plate, a rear side plate, and a right side plate. The right side plate is welded by a transition plate 8 above and a connecting plate 9 below. The first opening on the flange plate 5 serves as the air inlet, and the second opening on the connecting plate 9 serves as the air outlet.

[0026] The flange plate 5, the top plate 6, the arc plate 7, the front side plate, the rear side plate, the transition plate 8, and the connecting plate 9 are all made of 2-mm rust-proof aluminum plates. The air intake duct box body 1 is formed by bending and welding 7 pieces of 2-mm thick rust-proof aluminum plates, with a weight of only 1.65 kg, and the cross-sectional area of the air inlet is 30600 mm 2 , meeting the requirement of 27465 mm 2 of the air-cooled diesel engine.

[0027] The radian of the arc plate 7 is designed to avoid the transmission shaft vehicle body 2 skeleton, and the maximum arc surface distance between the arc plate 7 and the transmission shaft 10 is 20 mm. The entire air intake duct box body 1 has a circular arc transition, and the area of each transition section is larger than the air intake area of the air-cooled diesel engine. A dust discharge hole 16 with a diameter of 3 mm is provided at the bottom of the arc plate 7 for dust and debris to fall.

[0028] As Figure 4 shown, the connecting flange 3 is sewn by two aluminum plates 11 and a waterproof rain cloth 12 located between the two aluminum plates 11. One side of the connecting flange 3 faces the second opening on the connecting plate 9 and is bolted to the connecting plate 9, and the other side of the connecting flange 3 is connected to the flange at the air inlet 4 of the air-cooled diesel engine.

[0029] The entire connecting flange 3 is a flexible connection, which solves the error caused by spatial misalignment between the vehicle body 2 and the air-cooled diesel engine, and improves the convenience of disassembly, assembly, maintenance, and repair.

[0030] A first sealing gasket 13 is provided on the outer side of the flange plate 5, and a second sealing gasket 14 is provided at the flange connection between the other side of the connecting flange 3 and the air inlet of the air-cooled diesel engine 4. Both the first sealing gasket 13 and the second sealing gasket 14 are made of a 3-mm rubber plate. The rubber plate has high heat resistance. It is bonded to the flange surface with a sealant and will not age due to the high temperature in the power compartment. The rubber plate has a certain compression amount and can, together with the connecting flange 3, play a role in adjusting the axial installation amount, with good sealing effect.

[0031] During assembly, first remove the mesh plate of the air inlet 4 of the air-cooled diesel engine, bond the second sealing gasket 14 to the air inlet 4 of the air-cooled diesel engine with a sealant to prevent the air coming in from the air inlet duct from spreading into the power compartment. After bonding the second sealing gasket 14, hoist and fix the generator set; then bond the first sealing gasket 13 to the flange plate 5 of the air inlet duct box 1 in the same way, and install the air inlet duct box 1 and the connecting flange 3 together with 6 mounting bolts 15 and corresponding elastic washers and flat washers. Since the connecting flange 3 is made of a 2-mm waterproof tarpaulin 12 and the fabric has the function of a sealing gasket, no sealing gasket is designed on the installation surface of the box body. Place the air inlet duct box 1 into the power compartment and press it against the vehicle body 2 with 5 bolts and washers; after installing the air inlet duct box 1, fix the connecting flange 3 of the air inlet duct box 1 and the removed air inlet mesh plate to the flange of the air-cooled diesel engine.

Claims

1. An air inlet duct for an air-cooled diesel engine of an unmanned vehicle, characterized in that: The left opening of the air inlet box serves as an air inlet and is fixedly connected to the vehicle body by bolts, and the right opening of the air inlet box serves as an air outlet and is connected to the air inlet of the air-cooled diesel engine by a connecting flange.

2. The air inlet duct of the air-cooled diesel engine for an unmanned vehicle according to claim 1, characterized in that: The air inlet duct box is welded by a flange plate on the left, a top plate on the top, an arc plate on the bottom, a front side plate, a rear side plate and a right side plate. The right side plate is welded by an upper transition plate and a lower connecting plate. The first opening on the flange plate serves as an air inlet, and the second opening on the connecting plate serves as an air outlet.

3. The air inlet duct of the air-cooled diesel engine for an unmanned vehicle according to claim 2 is characterized in that: The cross-sectional area of ​​the air inlet is 30600mm 2 .

4. The air inlet duct of the air-cooled diesel engine for an unmanned vehicle according to claim 2, characterized in that: The curvature of the arc plate is designed to avoid the transmission shaft body frame. The maximum arc surface distance between the arc plate and the transmission shaft is 20 mm. A dust removal hole is provided at the bottom of the arc plate.

5. The air inlet duct of the air-cooled diesel engine for an unmanned vehicle according to claim 2, characterized in that: The entire air inlet duct box body has an arc transition, and the area of ​​each transition cross section is larger than the air inlet area of ​​the air-cooled diesel engine.

6. The air inlet duct of the air-cooled diesel engine for an unmanned vehicle according to claim 2, characterized in that: The connecting flange is formed by sewing two aluminum plates and a waterproof rain cloth located between the two aluminum plates, and the entire connecting flange is a soft connection.

7. The air inlet duct of the air-cooled diesel engine for an unmanned vehicle according to claim 6, characterized in that: One side of the connecting flange faces the second opening on the connecting plate and is connected to the connecting plate by bolts, and the other side of the connecting flange is connected to the flange at the air inlet of the air-cooled diesel engine.

8. The air inlet duct of the air-cooled diesel engine for an unmanned vehicle according to claim 2, characterized in that: A first sealing gasket is arranged on the outer side of the flange plate.

9. The air inlet duct of the air-cooled diesel engine for an unmanned vehicle according to claim 7, characterized in that: A second sealing gasket is provided at the connection between the other side of the connecting flange and the flange at the air inlet of the air-cooled diesel engine.

10. The air inlet duct of the air-cooled diesel engine for an unmanned vehicle according to claim 2, characterized in that: The flange plate, top plate, arc plate, front side plate, rear side plate, transition plate and connecting plate are all made of 2mm rust-proof aluminum plate.

Images