Device and method for lubricating cylinder hole and shaft neck during assembly of diesel engine

Abstract

The invention provides a device and method for lubricating a cylinder hole and a shaft neck during diesel engine assembling, and relates to the technical field of diesel engine assembling lubrication, the device comprises an oil injection structure and an oil injection control frame, the oil injection structure comprises a plurality of oil injection pipes, a plurality of fixing sleeves and a plurality of piston columns, and a connecting bottom plate is fixed to one ends of the piston columns in an assembled mode; the electric push rod B is connected to the center of one side of the connecting bottom plate in an assembled mode, the one-way valve is connected to the interior of one end of the piston column in an assembled mode, and a plurality of small oil injection holes are formed in the oil injection pipe; according to the technical key points, lubricating oil is conveyed into piston columns and enters an oil spraying pipe to be stored, an electric push rod B is used for pushing a connecting bottom plate to drive the multiple piston columns to stretch into multiple fixing sleeves correspondingly, and the lubricating oil stored in the oil spraying pipe is sprayed out through multiple small oil spraying holes; and the lubricating oil is attached to a cylinder hole and a shaft neck of the diesel engine cylinder body, so that the effect of quantitatively and quickly lubricating the internal area of the diesel engine cylinder body can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of diesel engine assembly lubrication, in particular to a cylinder hole and a journal lubrication device and method during diesel engine assembly. Background Art

[0002] A diesel engine is an engine that burns diesel to release energy. The advantages of a diesel engine are high torque and good economic performance. The working process of a diesel engine is similar to that of a gasoline engine. Each working cycle also undergoes four strokes: intake, compression, power, and exhaust. However, since the fuel used in a diesel engine is diesel, its viscosity is greater than that of gasoline and it is not easy to evaporate, while its auto-ignition temperature is lower than that of gasoline. Therefore, the formation and ignition of the combustible mixture are different from those of a gasoline engine. The main difference is that the mixture in the cylinder of a diesel engine is compression ignited, not ignited.

[0003] The main components of a diesel engine generally include the engine body, crank-connecting rod mechanism, valve train, fuel system, lubrication system, cooling system and electrical system. The engine body is the skeleton of the diesel engine, which supports and installs other components, including the cylinder block, cylinder liner, cylinder head, cylinder gasket, oil pan, flywheel housing, timing gear housing, front and rear feet. When assembling the piston and connecting rod, the engine cylinder bore and crankshaft journal must be lubricated to support the smooth installation of related components.

[0004] When assembling the piston and connecting rod of the existing engine, the engine cylinder bore and crankshaft journal are mainly lubricated by manual oil injection. When the engine is produced and the cylinder body is assembled in batches, manual lubrication is used, which is inefficient and prone to insufficient lubrication or excessive lubrication. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the embodiment of the present application provides a cylinder bore and journal lubrication device and method during diesel engine assembly, wherein the lubricating oil is delivered to the interior of a piston rod and sprayed out from one end of the piston rod through a one-way valve from the other end of the piston rod, so that an injection pipe slides on the outside of the piston rod and extends into the inner side of the cylinder bore of a diesel engine cylinder block, and the lubricating oil enters the interior of the injection pipe for storage, and an electric push rod B assembled with a positioning seat B pushes a connecting base plate to drive multiple piston rods to extend into the interiors of multiple fixed sleeves respectively, and the lubricating oil stored in the injection pipe is sprayed out through the interiors of multiple injection holes, so that the oil adheres to the cylinder bore and journal of the diesel engine cylinder block, thereby achieving the technical effect of quantitatively and quickly lubricating the internal area of ​​the diesel engine cylinder block.

[0006] The technical solution adopted by the embodiment of the present application to solve the technical problem is:

[0007] A cylinder bore and journal lubrication device for diesel engine assembly, comprising an oil injection structure and an oil injection control frame, wherein the oil injection control frame is assembled and fixed to the oil injection structure;

[0008] The fuel injection structure includes a plurality of fuel injection pipes, a plurality of fixed sleeves and a plurality of piston rods, one end of the plurality of piston rods is assembled and fixed with a connecting base plate, the center of one side of the connecting base plate is assembled and connected with an electric push rod B, one end of the piston rod is assembled and connected with a one-way valve inside, and a plurality of fuel injection holes are processed inside the fuel injection pipe, and the plurality of fuel injection holes are arranged at equal intervals along the axis of the fuel injection pipe and around the axis of the fuel injection pipe;

[0009] The plurality of fuel injection pipes correspond one-to-one to the plurality of cylinder holes inside the cylinder bodies of the diesel engines, the plurality of fuel injection pipes are slidably connected to the outside of the plurality of fixed sleeves, and the plurality of piston rods correspond one-to-one to the plurality of fixed sleeves;

[0010] The lubricating oil is sprayed out from one end of the piston rod through the one-way valve and the other end of the piston rod, and enters the interior of the oil injection pipe. The electric push rod B pushes the connecting base plate to drive multiple piston rods to extend into the interiors of multiple fixed sleeves respectively, and sprays the oil stored in the oil injection pipe through the interior of multiple oil injection holes.

[0011] In a possible implementation, the injection control frame includes a conductive slide rail, the conductive slide rail includes a track, the outside of the track is slidably connected to a slide seat, the top of the slide seat is assembled to a base plate B, the surface of one end of the base plate B is assembled to a corner block A, one side of the bottom of the corner block A is assembled to a corner block B, one side of the corner block B is assembled to an electric push rod A, the movable end of the electric push rod A is assembled to a seat plate B, and one end of the seat plate B is assembled to a base; the plurality of fixed sleeves all pass through the interior of the base, and one end of the fixed sleeve is assembled and fixed to the surface of the base, the injection pipe is received in the interior of the base and slides out from the interior of the base.

[0012] In a possible implementation, the outer wall of the piston column is processed with multiple annular grooves, and the interiors of the multiple annular grooves are all sleeved with O-rings; the piston column is slidably connected to the interior of the fixed sleeve, and the gap between the inner wall of the fixed sleeve and the surface of the piston column is filled by the O-ring.

[0013] In a possible implementation, the outer wall of the fixed sleeve is processed with two limit grooves, and the internal pin connection of one end of the two injection pipes is connected with two limit pin rods, and one end of the two limit pin rods is respectively slidably connected to the inside of the two limit grooves.

[0014] In a possible implementation, the middle part of the electric push rod B is assembled and connected with a positioning seat B, one side of the positioning seat B is provided with a seat plate A, and the surface of one side of the seat plate A is welded with four long rods; the positioning seat B is movably connected to the outside of the four long rods, and the movable end of the electric push rod B is movably connected to the inside of the positioning seat B.

[0015] In a possible implementation, the top of one side of the corner block B is assembled and connected with a guide sleeve, the inside of the guide sleeve is slidably connected with a guide rod A, and one end of the guide rod A is assembled and fixed to a corner of the top of the seat plate B.

[0016] In a possible implementation, the bottom of the slide is assembled with a base plate A, one end of the base plate A is assembled with a combined plate frame, the bottom of the combined plate frame is assembled with a guide rod B, and a positioning seat A is provided on the outside of the guide rod B; when the slide slides on the outside of the track, the guide rod B is driven to slide up and down inside the positioning seat A through the base plate A and the combined plate frame.

[0017] In a possible implementation, the track, the positioning seat A and the seat plate A form a rectangle, and steel structure beams can be used between the track, the positioning seat A and the seat plate A to support the assembly of the track, the positioning seat A and the seat plate A.

[0018] A method for lubricating a cylinder hole and a journal during assembly of a diesel engine, comprising:

[0019] Step 1: transport the diesel engine cylinder to the front of one side of the bottom of the injection structure and fix it by the tooling;

[0020] Step 2: Use the slide seat on the conductive slide rail to slide from the top to the bottom on the outside of the rail, and use the guide rod B and the positioning seat A to cooperate and position, so as to drive the injection structure carried by the corner block A, the seat plate B and the base to move to the bottom, so that the injection structure and the cylinder hole on the diesel engine cylinder block are located in the same horizontal plane;

[0021] Step 3: The electric push rod A controls the seat plate B to drive the multiple fixed sleeves inside the base forward, and with the help of the piston column inside the fixed sleeve and the connecting bottom plate and the electric push rod B at one end of the multiple piston columns, the positioning seat B slides outside the four long rods;

[0022] Step 4: The lubricating oil is sprayed out from one end of the piston rod through the one-way valve and the other end of the piston rod, so that the oil injection pipe slides outside the piston rod and extends into the inner side of the cylinder hole of the diesel engine cylinder block under the cooperation of the limit groove and the limit pin rod, and the lubricating oil enters the interior of the oil injection pipe for storage;

[0023] Step 5: The electric push rod B pushes the connecting base plate to drive multiple piston rods to extend into the interior of multiple fixed sleeves respectively, and the lubricating oil stored in the injection pipe is sprayed out through the interior of multiple injection holes.

[0024] The beneficial effects of this application are:

[0025] First, in this scheme, the lubricating oil is delivered to the interior of the piston rod and sprayed out from one end of the piston rod through the one-way valve and from the other end of the piston rod, so that the injection pipe slides outside the piston rod and extends into the inner side of the cylinder hole of the diesel engine cylinder block, and the lubricating oil enters the interior of the injection pipe for storage, and the electric push rod B assembled with the positioning seat B is used to push the connecting bottom plate to drive multiple piston rods to extend into the interior of multiple fixed sleeves respectively, and the lubricating oil stored in the injection pipe is sprayed out through the interior of multiple injection holes, so that the oil adheres to the cylinder hole and the journal of the diesel engine cylinder block, which can achieve the effect of quantitatively and quickly lubricating the internal area of ​​the diesel engine cylinder block;

[0026] Second, in this solution, the slide is used to slide from the top to the bottom on the outside of the track, and the fuel injection structure carried by the corner block A, the seat plate B and the base moves toward the bottom, so that the fuel injection structure and the cylinder hole on the diesel engine cylinder block are located in the same horizontal plane, and then the electric push rod A is used to control the seat plate B to drive the multiple fixed sleeves inside the base to move toward the direction of the diesel engine cylinder block, until the multiple fuel injection pipes outside the multiple fixed sleeves on the base are directly opposite to the cylinder holes on the diesel engine cylinder block, which is conducive to the movement of the diesel engine cylinder block at the bottom of the fuel injection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is one of the overall structural schematic diagrams of the present invention in use;

[0028] Figure 2 This is the second schematic diagram of the overall structure of the present invention in use;

[0029] Figure 3 It is a structural schematic diagram of a diesel engine cylinder body and a plurality of fuel injection pipes in a disconnected state according to the present invention;

[0030] Figure 4 It is a schematic diagram of the connection structure between the guide sleeve and the guide rod A of the present invention;

[0031] Figure 5 is a cross-sectional schematic diagram of the base of the present invention;

[0032] Figure 6 It is a cross-sectional schematic diagram of the fuel injection pipe and the fixed sleeve of the present invention;

[0033] Figure 7 For the present invention Figure 6 The enlarged schematic diagram of the middle A part;

[0034] Figure 8It is a cross-sectional schematic diagram of the piston column of the present invention.

[0035] Figure numerals: 1. diesel engine cylinder block; 2. corner block A; 3. one-way valve; 4. guide sleeve; 5. guide rod A; 6. limit pin rod; 7. electric push rod A; 8. conductive slide rail; 801. track; 802. slide seat; 9. positioning seat A; 10. guide rod B; 11. base plate A; 12. combined plate frame; 13. electric push rod B; 14. seat plate A; 15. base; 16. base plate B; 17. seat plate B; 18. positioning seat B; 19. piston rod; 20. connecting base plate; 21. injection pipe; 22. corner block B; 23. fixing sleeve; 24. ring groove; 25. O-ring; 26. limit strip groove. DETAILED DESCRIPTION

[0036] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0037] Example:

[0038] This embodiment introduces the specific structure of a cylinder bore and journal lubrication device and method for assembling a diesel engine. Figure 1-Figure 8 As shown, it includes an injection structure and an injection control frame assembled and fixed with the injection structure, the injection structure includes a plurality of injection pipes 21, a plurality of fixed sleeves 23 and a plurality of piston rods 19, one end of the plurality of piston rods 19 is assembled and fixed with a connecting base plate 20, the center of one side of the connecting base plate 20 is assembled and connected with an electric push rod B13, one end of the piston rod 19 is assembled and connected with a one-way valve 3, the plurality of injection pipes 21 correspond to the plurality of cylinder holes inside the plurality of diesel engine cylinder bodies 1, the plurality of injection pipes 21 are slidably connected to the outside of the plurality of fixed sleeves 23, and the plurality of piston rods 19 correspond to the plurality of fixed sleeves 23 one by one;

[0039] In order to allow the lubricating oil to be sprayed out from one end of the piston rod 19 through the one-way valve 3 and from the other end of the piston rod 19, and then to enter the interior of the oil spray pipe 21 and then spray out to lubricate the inner wall of the cylinder hole and the journal, as shown in FIG. Figure 5 and Figure 6 As shown, the fuel injection pipe 21 is processed with a plurality of fuel injection holes inside. By arranging the plurality of fuel injection holes along the axis of the fuel injection pipe 21 and around the axis of the fuel injection pipe 21 at equal intervals, the oil sprayed from the fuel injection holes on the fuel injection pipe 21 can be made to act on the area that needs lubrication inside the diesel engine cylinder block 1 as much as possible;

[0040] Secondly, by starting the electric push rod B13, the electric push rod B13 pushes the connecting base plate 20 to drive the multiple piston rods 19 to extend into the multiple fixed sleeves 23 respectively, and the oil stored in the injection pipe 21 is sprayed out through the multiple injection holes;

[0041] like Figure 1 , Figure 2 and Figure 3 The fuel injection control frame includes a conductive slide rail 8, the conductive slide rail 8 includes a track 801, the outer portion of the track 801 is slidably connected to a slide seat 802, the top of the slide seat 802 is assembled and connected to a bottom plate B16, the surface of one end of the bottom plate B16 is assembled and connected to an angle block A2, one side of the bottom of the angle block A2 is assembled and connected to an angle block B22, one side of the angle block B22 is assembled and connected to an electric push rod A7, the movable end of the electric push rod A7 is assembled and connected to a seat plate B17, and one end of the seat plate B17 is assembled and connected to a base 15;

[0042] By making the plurality of fixed sleeves 23 pass through the interior of the base 15 and assembling and fixing one end of the fixed sleeve 23 to the surface of the base 15, the fuel injection pipe 21 can be stored inside the base 15, preventing the fuel injection pipe 21 from extending outside the fixed sleeve 23 to affect the orderly alignment of the diesel engine cylinder block 1 and the plurality of fuel injection pipes 21. When the fuel injection pipe 21 slides outside the fixed sleeve 23 and slides out from the interior of the base 15, the fuel injection pipe 21 can extend into the cylinder hole inside the diesel engine cylinder block 1.

[0043] Secondly, in order to ensure that when the piston rod 19 moves inside the fixed sleeve 23, the lubricating oil stored in the injection pipe 21 can be pressed out from the injection hole in a pressurized manner, such as Figure 6 and Figure 7 As shown, the outer wall of the piston column 19 is processed with a plurality of annular grooves 24, and the interiors of the plurality of annular grooves 24 are sleeved with O-rings 25. By making the piston column 19 slidably connected to the interior of the fixed sleeve 23, when the O-ring 25 fills the gap between the inner wall of the fixed sleeve 23 and the surface of the piston column 19, the piston column 19 can ensure the effect of applying pressure by piston movement inside the fixed sleeve 23;

[0044] Furthermore, in order to prevent the fuel injection pipe 21 from being separated from one end of the fixed sleeve 23 when sliding outside the fixed sleeve 23, Figure 7 As shown, the outer wall of the fixed sleeve 23 is processed with two limit grooves 26, and the inner ends of the two fuel injection pipes 21 are pin-connected with two limit pins 6. By making one end of the two limit pins 6 slidably connected to the inside of the two limit grooves 26, the limit grooves 26 and the limit pins 6 can be used to cooperate to control the range of the fuel injection pipe 21 when sliding outside the fixed sleeve 23;

[0045] Furthermore, in order to enable the electric push rod B13 to control the connection base plate 20 to push the multiple piston rods 19 to slide inside the multiple fixed sleeves 23, as shown in FIG. Figure 2As shown, the middle part of the electric push rod B13 is assembled and connected with a positioning seat B18, and a seat plate A14 is provided on one side of the positioning seat B18. Four long rods are welded and connected to the surface of one side of the seat plate A14. By movably connecting the positioning seat B18 to the outside of the four long rods and movably connecting the movable end of the electric push rod B13 to the inside of the positioning seat B18, the positioning seat B18 can be used as a support to allow the electric push rod B13 to directly control the connection base plate 20 to move toward one side of the base 15.

[0046] like Figure 2 and Figure 3 As shown, the top of one side of the corner block B22 is assembled and connected with a guide sleeve 4, and the inside of the guide sleeve 4 is slidably connected with a guide rod A5. By assembling and fixing one end of the guide rod A5 with a corner of the top of the seat plate B17, the guide sleeve 4 can be used to position the guide rod A5 assembled on the seat plate B17 during the process in which the electric push rod A7 controls the seat plate B17 to drive the base 15 forward, thereby ensuring the stability of the base 15 driving the multiple injection pipes 21 to move;

[0047] At the same time, during the movement of the base 15, the positioning seat B18 assembled and connected with the electric push rod B13 slides outside the four long rods to adapt to the movement state of the base 15;

[0048] like Figure 1 and Figure 2 As shown, the bottom of the slide 802 is assembled and connected with a bottom plate A11, one end of the bottom plate A11 is assembled and connected with a combined plate frame 12, the bottom of the combined plate frame 12 is assembled and connected with a guide rod B10, and a positioning seat A9 is arranged outside the guide rod B10;

[0049] Among them, by making the slide 802 slide outside the track 801, the guide rod B10 can be driven to slide up and down inside the positioning seat A9 with the help of the bottom plate A11 and the combined plate frame 12, so that the injection control frame controls the injection structure to move up and down through the slide 802 and the track 801 to ensure the stability of the injection structure.

[0050] In some examples, the track 801, the positioning seat A9 and the seat plate A14 form a rectangle, and a steel structure beam column can be used between the track 801, the positioning seat A9 and the seat plate A14 to support the assembly of the track 801, the positioning seat A9 and the seat plate A14, and can be assembled to the existing concrete structure.

[0051] When the cylinder bore and journal lubrication device is used to lubricate the cylinder bore and journal during the assembly of the diesel engine:

[0052] First, the diesel engine cylinder body 1 is transported to the front of one side of the bottom of the fuel injection structure and is clamped and fixed by a tooling (including but not limited to a transport rack, a mechanical arm, a lifting machine, etc.);

[0053] Then, the slide 802 on the conductive slide rail 8 is slid from the top to the bottom outside the track 801, so that the positioning seat A9 in the fixed state is positioned by the guide rod B10 to ensure the stability of the slide 802 when it moves up and down outside the track 801, so that the oil injection structure carried by the corner block A2, the seat plate B17 and the base 15 moves to the bottom, so that the oil injection structure and the cylinder hole on the diesel engine cylinder block 1 are located in the same horizontal plane;

[0054] Next, the electric push rod A7 is used to control the seat plate B17 to drive the multiple fixed sleeves 23 inside the base 15, and the guide rod A5 assembled and fixed with the corner block A2 is used to position the guide sleeve seat 4 fixed with the seat plate B17, and the multiple injection pipes 21 outside the multiple fixed sleeves 23 on the base 15 are aligned with the cylinder holes on the diesel engine cylinder block 1. (In this process, with the help of the piston rod 19 inside the fixed sleeve 23 and the connecting bottom plate 20 at one end of the multiple piston rods 19 and the electric push rod B13, the positioning seat B18 slides outside the four long rods, so that the base 15 can move stably in the horizontal plane toward the diesel engine cylinder block 1);

[0055] Subsequently, the lubricating oil is delivered to the interior of the piston rod 19 (the lubricating oil delivery method in the hydraulic system can be used), and is sprayed out from one end of the piston rod 19 through the one-way valve 3 and the other end of the piston rod 19, so that the oil injection pipe 21 slides outside the piston rod 19 and extends into the inner side of the cylinder hole of the diesel engine cylinder block 1 under the cooperation of the limit groove 26 and the limit pin 6, and the lubricating oil enters the interior of the oil injection pipe 21 for storage;

[0056] Finally, the electric push rod B13 assembled with the positioning seat B18 pushes the connecting base plate 20 to drive the multiple piston rods 19 to extend into the multiple fixed sleeves 23 respectively, and the lubricating oil stored in the injection pipe 21 is sprayed out through the multiple injection holes, and the oil is attached to the cylinder hole and the journal of the diesel engine cylinder block 1;

[0057] At the same time, when the lubrication work of the diesel engine cylinder block 1 is completed, the electric push rod B13 controls the piston rod 19 to retreat quickly. With the help of the negative pressure state formed inside the injection pipe 21, the injection pipe 21 can slide outside the fixed sleeve 23 and be quickly retracted into the base 15, so as to facilitate the transfer of the diesel engine cylinder block 1 to the next process.

[0058] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A cylinder bore and journal lubrication device for diesel engine assembly, characterized in that: include: Fuel injection structure; as well as A fuel injection control frame, which is assembled and fixed with the fuel injection structure; The fuel injection structure comprises a plurality of fuel injection pipes (21), a plurality of fixed sleeves (23) and a plurality of piston rods (19); one end of the plurality of piston rods (19) is fixedly assembled with a connecting base plate (20); the center of one side of the connecting base plate (20) is assembled with an electric push rod B (13); one end of the piston rod (19) is internally assembled with a one-way valve (3); the interior of the fuel injection pipe (21) is machined with a plurality of fuel injection holes; the plurality of fuel injection holes are arranged at equal intervals along the axis of the fuel injection pipe (21) and around the axis of the fuel injection pipe (21); The plurality of fuel injection pipes (21) correspond one-to-one to the plurality of cylinder holes inside the plurality of diesel engine cylinder bodies (1); the plurality of fuel injection pipes (21) are slidably connected to the outside of the plurality of fixed sleeves (23); and the plurality of piston rods (19) correspond one-to-one to the plurality of fixed sleeves (23); The lubricating oil is sprayed out from one end of the piston rod (19) through the one-way valve (3) and from the other end of the piston rod (19), and enters the interior of the oil injection pipe (21). The electric push rod B (13) pushes the connecting base plate (20) to drive the multiple piston rods (19) to extend into the interior of the multiple fixed sleeves (23) respectively, and sprays the oil stored in the oil injection pipe (21) through the interior of the multiple oil injection holes.

2. A cylinder bore and journal lubrication device for diesel engine assembly as claimed in claim 1, characterized in that: The fuel injection control frame comprises a conductive slide rail (8), the conductive slide rail (8) comprises a rail (801), the outer portion of the rail (801) is slidably connected to a slide seat (802), the top of the slide seat (802) is assembled and connected to a bottom plate B (16), the surface of one end of the bottom plate B (16) is assembled and connected to an angle block A (2), one side of the bottom of the angle block A (2) is assembled and connected to an angle block B (22), one side of the angle block B (22) is assembled and connected to an electric push rod A (7), the movable end of the electric push rod A (7) is assembled and connected to a seat plate B (17), and one end of the seat plate B (17) is assembled and connected to a base (15); The plurality of fixed sleeves (23) are all passed through the interior of the base (15), and one end of the fixed sleeve (23) is assembled and fixed to the surface of the base (15); the fuel injection pipe (21) is received in the interior of the base (15) and slides out from the interior of the base (15).

3. A cylinder bore and journal lubrication device for diesel engine assembly as claimed in claim 1, characterized in that: The outer wall of the piston rod (19) is processed with a plurality of annular grooves (24), and the interiors of the plurality of annular grooves (24) are all sleeved with O-rings (25); The piston column (19) is slidably connected to the interior of the fixed sleeve (23), and the gap between the inner wall of the fixed sleeve (23) and the surface of the piston column (19) is filled by an O-ring (25).

4. A cylinder bore and journal lubrication device for assembling a diesel engine as claimed in claim 1, characterized in that: The outer wall of the fixed sleeve (23) is processed with two limit strip grooves (26), and the inner ends of the two injection pipes (21) are pin-connected with two limit pin rods (6), and one end of the two limit pin rods (6) is respectively slidably connected to the inside of the two limit strip grooves (26).

5. A cylinder bore and journal lubrication device for assembling a diesel engine as claimed in claim 2, characterized in that: The middle part of the electric push rod B (13) is assembled and connected with a positioning seat B (18), one side of the positioning seat B (18) is provided with a seat plate A (14), and the surface of one side of the seat plate A (14) is welded and connected with four long rods; The positioning seat B (18) is movably connected to the outside of the four long rods, and the movable end of the electric push rod B (13) is movably connected to the inside of the positioning seat B (18).

6. A cylinder bore and journal lubrication device for diesel engine assembly as claimed in claim 5, characterized in that: A guide sleeve (4) is assembled and connected to the top of one side of the corner block B (22), and a guide rod A (5) is slidably connected inside the guide sleeve (4), and one end of the guide rod A (5) is assembled and fixed to a corner of the top of the seat plate B (17).

7. A cylinder bore and journal lubrication device for diesel engine assembly as claimed in claim 1, characterized in that: The bottom of the slide seat (802) is assembled and connected to a bottom plate A (11), one end of the bottom plate A (11) is assembled and connected to a combined plate frame (12), the bottom of the combined plate frame (12) is assembled and connected to a guide rod B (10), and a positioning seat A (9) is arranged outside the guide rod B (10); When the slide seat (802) slides outside the track (801), the guide rod B (10) is driven to slide up and down inside the positioning seat A (9) through the bottom plate A (11) and the combined plate frame (12).

8. A cylinder bore and journal lubrication device and method for assembling a diesel engine as claimed in claim 6, characterized in that: The track (801), the positioning seat A (9) and the seat plate A (14) form a rectangle, and steel structure beams can be used between the track (801), the positioning seat A (9) and the seat plate A (14) to support the assembly work of the track (801), the positioning seat A (9) and the seat plate A (14).

9. A method for lubricating cylinder bores and journals during diesel engine assembly, which is implemented by using any one of claims 1 to 8, characterized in that: include: Step 1: transport the diesel engine cylinder body (1) to the front of one side of the bottom of the fuel injection structure and fix it by clamping it with a tool; Step 2: Use the slide seat (802) on the conductive slide rail (8) to slide from the top to the bottom outside the track (801), and use the guide rod B (10) and the positioning seat A (9) to coordinate and position, so as to drive the fuel injection structure carried by the corner block A (2), the seat plate B (17) and the base (15) to move toward the bottom, so that the fuel injection structure and the cylinder hole on the diesel engine cylinder block (1) are located in the same horizontal plane; Step 3: The electric push rod A (7) controls the seat plate B (17) to drive the multiple fixed sleeves (23) inside the base (15) to move forward, and with the help of the piston column (19) inside the fixed sleeve (23) and the connecting bottom plate (20) and the electric push rod B (13) at one end of the multiple piston columns (19), the positioning seat B (18) slides outside the four long rods; Step 4: The lubricating oil is sprayed out from one end of the piston rod (19) through the one-way valve (3) and the other end of the piston rod (19), so that the oil injection pipe (21) slides outside the piston rod (19) and extends into the inner side of the cylinder hole of the diesel engine cylinder body (1) under the cooperation of the limit groove (26) and the limit pin rod (6), and the lubricating oil enters the interior of the oil injection pipe (21) for storage; Step 5: The electric push rod B (13) pushes the connecting base plate (20) to drive the multiple piston rods (19) to extend into the interior of the multiple fixed sleeves (23) respectively, and spray the lubricating oil stored in the oil spray pipe (21) through the interior of the multiple oil spray holes.

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