Moving device for gas supply system of heavy oil engine

Abstract

The invention provides a heavy oil engine gas supply system movement device, and relates to the technical field of engines, the heavy oil engine gas supply system movement device comprises a crankshaft body and a gas compressor body, a butt joint shaft is fixedly installed at the side end part of the crankshaft body, a first deep groove ball bearing is fixedly installed on the surface of the butt joint shaft, and a second deep groove ball bearing is movably installed on the surface of the butt joint shaft; a flat key block is arranged on the inner side of the second deep groove ball bearing, an air compressor crank is rotationally installed at the side end of the butt joint shaft, the butt joint shaft and the air compressor crank are installed in a butt joint mode, meanwhile, a first check ring and a needle bearing are installed on the surface of the air compressor crank, and the side end of the air compressor crank and the butt joint shaft are installed in a combined mode. Meanwhile, the first countersunk head screw and the first check ring are combined and installed on one side of the compressor crank, all parts are designed in a split mode, assembling is conducted in an interference fit cold pressing mode, and the overall height light weight and the structural height light weight are effectively improved through the highly integrated design.

Description

Technical Field

[0001] The invention belongs to the technical field of engines, and more specifically, particularly relates to a motion device for an air supply system of a heavy oil engine. Background Art

[0002] The working principle of a heavy oil engine is similar to that of a general internal combustion engine. The fuel is burned in the cylinder to generate high-temperature and high-pressure gas, which pushes the piston to do work, thereby converting chemical energy into mechanical energy. The air supply system is mainly used to provide the engine with clean and appropriate air to meet the combustion requirements. In actual applications, the air supply equipment for heavy oil engines usually requires the following technologies:

[0003] 1. Air filter components to prevent them from entering the engine and protect the internal parts of the engine;

[0004] 2. The air intake duct delivers the filtered air to the engine's air intake;

[0005] 3. Throttle body, which controls the air flow into the engine;

[0006] 4. Intake manifold distributes air evenly to each cylinder.

[0007] At present, the air supply system passes compressed air through the fuel pressure regulating valve into the oil-gas premixing chamber; the fuel enters the oil-gas premixing chamber through the fuel injector, and the excess fuel enters the return pipe through the fuel pressure regulating valve. After the pressurized fuel and compressed air are fully mixed in the oil-gas premixing chamber, they are sprayed into the combustion chamber through the air nozzle.

[0008] The air supply system is composed of filtering equipment, air intake pipes and other components, which results in a larger volume of the air supply system. Combining the air supply system with the engine for installation, especially for small engines, can easily cause the engine to occupy more installation space, become less compact, and increase the overall mass and power-to-weight ratio. Summary of the invention

[0009] In order to solve the above technical problems, the present invention provides a heavy oil engine air supply system motion device to solve the above problems.

[0010] A motion device of a heavy oil engine air supply system comprises a crankshaft body and a compressor body, a docking shaft is fixedly mounted on the side end of the crankshaft body, a first deep groove ball bearing is fixedly mounted on the surface of the docking shaft, a second deep groove ball bearing is movably mounted on the surface of the docking shaft, a flat key block is arranged on the inner side of the second deep groove ball bearing, a compressor crank is rotatably mounted on the side end of the docking shaft, and a first countersunk screw is rotatably mounted on the side end of the compressor crank.

[0011] Preferably, a needle bearing is fixedly installed on the side end of the compressor crank, a first retaining ring is provided on the surface of the first countersunk screw, a cavity is fixedly installed on the bottom end of the compressor body, an air inlet is fixedly installed on the side end of the cavity, a mounting sleeve is fixedly installed on the side end of the crankshaft body, a plurality of locking teeth are installed on the side end of the crankshaft body, and a second retaining ring is provided on the side end of the mounting sleeve.

[0012] Preferably, a second countersunk screw is fixedly installed inside the second retaining ring, the second countersunk screw is of conical design and is inserted into the interior of the mounting sleeve, a connecting rod is rotatably installed inside the cavity, one end of the connecting rod is rotatably connected to the first countersunk screw, the side end of the cavity is docked with the side end of the second deep groove ball bearing, an interface is installed at the end of the cavity, and lubricating oil is filled into the interior of the cavity through the interface, the compressor body is fixed on the housing of the transmission device, and the transmission device includes a cylinder liner, a disc valve, a compressor piston, and a compressor case.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In the present invention, a compressor crank is installed at one end of the docking shaft, and a first countersunk screw is installed at the side end of the compressor crank. The first countersunk screw is directly connected to the connecting rod inside the cavity. When the compressor crank rotates, the first countersunk screw is driven to perform eccentric movement at the side end of the compressor crank, and the connecting rod is driven to move inside the cavity. The compressor body is started to operate, and the first countersunk screw is driven to operate inside the cavity through the rotation of the crankshaft body, so that the engine meets the requirements of high-compact air supply, reduces the space occupied by the air supply equipment, reduces unnecessary linkage mechanisms, and meets the requirements of independent air intake.

[0015] In the present invention, the docking shaft and the compressor crank are docked and installed, and the first retaining ring and the needle bearing are installed on the surface of the compressor crank. The side end of the compressor crank and the docking shaft are installed in combination. At the same time, the first countersunk screw and the first retaining ring are installed in combination with one side of the compressor crank. All parts are designed separately and assembled by interference fit cold pressing. The highly integrated design effectively improves the overall and structural height lightweight.

[0016] In the present invention, a compressor crank is installed at one end of the docking shaft, and a first countersunk screw is installed at the side end of the compressor crank. The first countersunk screw is directly connected to the connecting rod inside the cavity. The compressor crank rotates, driving the first countersunk screw to move eccentrically at the side end of the compressor crank, driving the connecting rod to move inside the cavity. The side end of the compressor crank and the docking shaft are installed in combination and assembled by interference fit cold pressing, which is convenient for installation in a small space and also convenient for later maintenance.

[0017] In the present invention, the first deep groove ball bearing is directly driven to rotate by the gear box, and at the same time, a second countersunk screw and a second retaining ring are installed on the side end of the crankshaft body. One end of the second countersunk screw is rotated and inserted into the interior of the mounting sleeve, and at the same time, the surface of the second countersunk screw is sleeved with the second retaining ring. The movement of the second countersunk screw drives the second retaining ring to be squeezed and fixed to the side end of the mounting sleeve, and the second retaining ring plays a role of density and buffering. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the crankshaft body structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the compressor body of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of a first deep groove ball bearing of the present invention;

[0021] Figure 4 It is a schematic diagram of the docking shaft structure of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the compressor crank of the present invention;

[0023] Figure 6 It is a cross-sectional view of the present invention.

[0024] In the figure, the correspondence between the component names and the figure numbers is: 11, crankshaft body; 12, compressor body; 13, first deep groove ball bearing; 14, second deep groove ball bearing; 15, cavity; 16, first countersunk screw; 17, first retaining ring; 18, needle roller bearing; 19, compressor crank; 21, second countersunk screw; 22, second retaining ring; 23, mounting sleeve; 24, docking shaft; 25, flat key block; 26, air inlet. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0026] See also Figure 1 - Figure 6The present invention provides a motion device of a heavy oil engine air supply system, comprising a crankshaft body 11 and a compressor body 12, a docking shaft 24 is fixedly installed on the side end of the crankshaft body 11, a first deep groove ball bearing 13 is fixedly installed on the surface of the docking shaft 24, a second deep groove ball bearing 14 is movably installed on the surface of the docking shaft 24, a flat key block 25 is arranged on the inner side of the second deep groove ball bearing 14, the first deep groove ball bearing 13 is directly driven to rotate by a gear box, and a second countersunk screw 21 and a second retaining ring 22 are installed on the side end of the crankshaft body 11, one end of the second countersunk screw 21 is rotatably inserted into the interior of the installation sleeve 23, and the surface of the second countersunk screw 21 is sleeved with the second retaining ring 22, and the movement of the second countersunk screw 21 drives the second retaining ring 22 to move toward the installation sleeve 2 The side end of the butt shaft 24 is rotatably mounted with a compressor crank 19, and the side end of the compressor crank 19 is rotatably mounted with a first countersunk screw 16. An impeller is mounted inside the crankshaft body 11. The compressor body 12 is oriented toward the cylinder body as a whole and is installed close to the cylinder body. The first deep groove ball bearing 13 and the second deep groove ball bearing 14 respectively stabilize the rotation of the crankshaft body 11 and the compressor crank 19, bear radial loads, limit radial runout and axial movement of the shaft, and ensure the rotation accuracy of the compressor crank 19. At the same time, a sealing partition is performed to separate the crankshaft body 11 from the cavity 15, and the second deep groove ball bearing 14 seals one side of the cavity 15.

[0027] A needle bearing 18 is fixedly installed on the side end of the compressor crank 19, a first retaining ring 17 is arranged on the surface of the first countersunk screw 16, a cavity 15 is fixedly installed on the bottom end of the compressor body 12, an air inlet 26 is fixedly installed on the side end of the cavity 15, and an air inlet 26 is installed at the side end of the cavity 15. Air enters the interior of the cavity 15 through the air inlet 26, and at the same time, the compressor crank 19 drives the connecting rod to move. First, the outside air enters the compressor through the air inlet duct. In this process, the speed and pressure of the air are relatively low. The connecting rod drives the impeller inside the compressor body 12 to move. As the compressor impeller rotates, a bearing is installed on the surface of the impeller, so that the impeller can rotate at high speed and ensure the stability and reliability of the rotation. The blades on the impeller do work on the air to increase the speed and pressure of the air. A mounting sleeve 23 is fixedly installed on the side end of the crankshaft body 11, a plurality of latch teeth are installed on the side end of the crankshaft body 11, and a second retaining ring 22 is arranged on the side end of the mounting sleeve 23.

[0028] A second countersunk screw 21 is fixedly installed inside the second retaining ring 22. The second countersunk screw 21 is of conical design and is inserted into the interior of the mounting sleeve 23. A connecting rod is rotatably installed inside the cavity 15. One end of the connecting rod is rotatably connected to the first countersunk screw 16. The side end of the cavity 15 is docked with the side end of the second deep groove ball bearing 14. An interface is installed at the end of the cavity 15, and lubricating oil is filled into the interior of the cavity 15 through the interface. A first countersunk screw 16 is installed at the side end of the compressor crank 19. The first countersunk screw 16 directly connects the compressor crank 19 with the connecting rod inside the cavity 15. The compressor crank 19 rotates, driving the connecting rod to perform eccentric motion at the side end of the compressor crank 19, and at the same time drives the connecting rod to reciprocate inside the cavity 15. The compressor body 12 is fixed on the housing of the transmission device, and the transmission device includes a cylinder liner, a disc valve, a compressor piston, and a compressor case.

[0029] Working principle:

[0030] In the first step, a gearbox is installed on one side of the engine. The main structure of the crankshaft body 11 is a combined engine crankshaft form. Two bearings are arranged on the gearbox side of the crankshaft body 11. A plurality of latches are installed on the side end of the crankshaft body 11 to dock with the gearbox. The crankshaft body 11 as a whole faces the direction of the cylinder body, close to the cylinder body, and is connected to the transmission system. The transmission system mainly includes cylinder liners, disc valves, compressor pistons, compressor housings and other parts. The first deep groove ball bearing 13 is directly driven to rotate through the gearbox. At the same time, a second countersunk screw 21 and a second retaining ring 22 are installed on the side end of the crankshaft body 11. One end of the second countersunk screw 21 is rotated and inserted into the interior of the mounting sleeve 23. At the same time, the surface of the second countersunk screw 21 is sleeved with the second retaining ring 22. The movement of the second countersunk screw 21 drives the second retaining ring 22 to be squeezed and fixed to the side end of the mounting sleeve 23. The second retaining ring 22 plays a role of density and buffering, fixes the crankshaft body 11 on one side of the gearbox, and directly drives the crankshaft body 11 to rotate. Rotate, install the docking shaft 24 on the outside of the crankshaft body 11, the surface of the docking shaft 24 is respectively installed with the first deep groove ball bearing 13 and the second deep groove ball bearing 14, and the inner side of the second deep groove ball bearing 14 is installed with a flat key block 25, the flat key block 25 is docked with the docking shaft 24, and plays a role of fixing the second deep groove ball bearing 14, and at the same time, a compressor crank 19 is installed at one end of the docking shaft 24, and a first countersunk screw 16 is installed at the side end of the compressor crank 19. The compressor crank 19 is directly connected to the connecting rod inside the cavity 15. The compressor crank 19 rotates, driving the connecting rod to perform eccentric movement at the side end of the compressor crank 19, and at the same time driving the connecting rod to perform reciprocating movement inside the cavity 15, starting the compressor body 12 to run, and driving the compressor crank 19 to move inside the cavity 15 through the rotation of the crankshaft body 11, so that the engine can meet the requirements of high-compact air supply, reduce the space occupied by the air supply equipment, reduce unnecessary linkage mechanisms, and meet the requirements of independent air intake.

[0031] At the same time, a first deep groove ball bearing 13 and a second deep groove ball bearing 14 are installed on the surface of the docking shaft 24. The specifications of the first deep groove ball bearing 13 and the second deep groove ball bearing 14 are different. The first deep groove ball bearing 13 and the second deep groove ball bearing 14 respectively stabilize the rotation of the crankshaft body 11 and the compressor crank 19, bear radial loads, limit radial runout and axial movement of the shaft, ensure the rotation accuracy of the compressor crank 19, and at the same time perform sealing and isolation to separate the crankshaft body 11 from the cavity 15. The second deep groove ball bearing 14 seals one side of the cavity 15.

[0032] In the second step, multiple screws are installed on the outside of the compressor body 12 and the cavity 15 to fix the compressor body 12 on one side of the engine. At the same time, an air inlet 26 is installed on the side end of the cavity 15. The air enters the interior of the cavity 15 through the air inlet 26. At the same time, the compressor crank 19 drives the connecting rod to move. First, the outside air enters the compressor through the air inlet. In this process, the air speed and pressure are relatively low. The connecting rod drives the impeller inside the compressor body 12 to move. As the compressor impeller rotates, bearings are installed on the surface of the impeller to enable the impeller to rotate at high speed and ensure the stability and reliability of the rotation. The blades on the impeller do work on the air to increase the air speed and pressure. Under the action of the impeller, the air flows from the center to the outer edge of the impeller, and the speed gradually increases, and the pressure also increases accordingly. After being compressed by the impeller The air enters the diffuser, and the function of the diffuser is to convert the kinetic energy of the high-speed airflow into pressure energy, further increasing the pressure of the air. The compressed air is discharged from the top of the compressor body 12 and enters the engine's intake system through a pipe. By installing an interface at the end of the cavity 15, the Runhuayuan enters the interior of the cavity 15 through the interface to lubricate the rotating compressor crank 19 and the connecting rod. At the same time, the surface of the compressor crank 19 is installed with a first retaining ring 17 and a needle bearing 18. The side end of the compressor crank 19 and the docking shaft 24 are assembled together. At the same time, the connecting rod and the compressor crank 19 are assembled together by the first countersunk screw 16, and the position of the first retaining ring 17 is fixed. All parts are split designs and assembled by interference fit cold pressing. The highly integrated design makes the overall and structural height lightweight and effectively improved.

[0033] The examples of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and to design various embodiments with various modifications suitable for specific uses.

Claims

1. A heavy oil engine air supply system motion device, comprising a crankshaft body (11) and a compressor body (12), characterized in that: A docking shaft (24) is fixedly mounted on the side end of the crankshaft body (11); a first deep groove ball bearing (13) is fixedly mounted on the surface of the docking shaft (24); a second deep groove ball bearing (14) is movably mounted on the surface of the docking shaft (24); a flat key block (25) is provided on the inner side of the second deep groove ball bearing (14); a compressor crank (19) is rotatably mounted on the side end of the docking shaft (24); and a first countersunk screw (16) is rotatably mounted on the side end of the compressor crank (19); The crankshaft body (11) is internally installed with an impeller, and the compressor body (12) is generally oriented toward the cylinder body and installed closely to the cylinder body.

2. A heavy oil engine air supply system motion device as claimed in claim 1, characterized in that: A needle bearing (18) is fixedly mounted on the side end of the compressor crank (19), and a first retaining ring (17) is arranged on the surface of the first countersunk screw (16).

3. A heavy oil engine air supply system motion device as claimed in claim 1, characterized in that: A cavity (15) is fixedly mounted on the bottom end of the compressor body (12), and an air inlet (26) is fixedly mounted on the side end of the cavity (15).

4. A heavy oil engine air supply system motion device as claimed in claim 1, characterized in that: A mounting sleeve (23) is fixedly mounted on the side end of the crankshaft body (11), and a plurality of latching teeth are mounted on the side end of the crankshaft body (11).

5. A heavy oil engine air supply system motion device as claimed in claim 4, characterized in that: A second retaining ring (22) is provided at the side end of the mounting sleeve (23).

6. A heavy oil engine air supply system motion device as claimed in claim 5, characterized in that: A second countersunk screw (21) is fixedly installed inside the second retaining ring (22); the second countersunk screw (21) is of conical design and is inserted into the interior of the mounting sleeve (23).

7. A heavy oil engine air supply system motion device as claimed in claim 3, characterized in that: A connecting rod is rotatably mounted inside the cavity (15), and one end of the connecting rod is rotatably connected to a first countersunk screw (16).

8. A heavy oil engine air supply system motion device as claimed in claim 3, characterized in that: The side end of the cavity (15) is butt-jointed with the side end of the second deep groove ball bearing (14).

9. A heavy oil engine air supply system motion device as claimed in claim 3, characterized in that: An interface is installed at the end of the cavity (15), and lubricating oil is filled into the cavity (15) through the interface.

10. A heavy oil engine air supply system motion device as claimed in claim 1, characterized in that: The compressor body (12) is fixed on a housing of a transmission device, and the transmission device comprises a cylinder sleeve, a disc valve, a compressor piston, and a compressor housing.

Images