CN220566153U

CN220566153U - Novel crankshaft with adjustable hydraulic crankshaft rotation radius

Info

Publication number: CN220566153U
Application number: CN202322417548.3U
Authority: CN
Inventors: 胡誉缤; 李嘉诚
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-09-06
Filing date: 2023-09-06
Publication date: 2024-03-08
Anticipated expiration: 2033-09-06

Abstract

The utility model relates to a novel hydraulic crankshaft with adjustable crankshaft rotation radius, wherein a connecting rod journal is arranged on the inner side of a crank arm; a hydraulic ejector rod is arranged in the crank; the hydraulic ejector rods are respectively arranged in the two cranks; the bottom of the hydraulic ejector rod is arranged in the crank arm; the head of the hydraulic ejector rod is arranged in the fixed groove; the fixed groove is arranged in the main shaft counterweight; a jacking rod is arranged in the hydraulic ejector rod; the bottom of the jacking rod is provided with a hydraulic oil cylinder; the bottom of the hydraulic cylinder is respectively connected with an oil inlet pipe and an oil outlet pipe; the oil inlet pipe is connected with an oil distributing valve A; the oil outlet pipe is connected with an oil distributing valve B; the oil distributing valve A and the oil distributing valve B are arranged in the connecting rod journal; the other ends of the oil distributing valve A and the oil distributing valve B are respectively connected with a central rotary joint through a high-pressure pipe A and a high-pressure pipe B; the other end of the central rotary joint is connected with an oil pump, so that the problems of changing the compression ratio of a piston, the stroke of the piston, the output power of an engine and the circulation of the engine under different working conditions are solved.

Description

Novel crankshaft with adjustable hydraulic crankshaft rotation radius

Technical Field

The utility model relates to the technical field of novel crankshafts, in particular to a novel hydraulic crankshaft with adjustable crankshaft rotation radius.

Background

The compression ratio of an engine refers to the ratio of the maximum volume and the minimum volume of gas present in a cylinder as the piston moves in the cylinder. In the current mass production vehicles, the compression ratio of the gasoline engine is generally in the range of 9-12, and in order to improve the power per liter and the thermal efficiency of the engine, the compression ratio of the current domestic and foreign engine design is generally higher. However, the load of the engine will also become large, the risk of knocking of the engine will become large, the compression ratio will be too small, the risk of knocking of the engine will not be large, but the thermal efficiency of the engine will not be too high. In the present, the main flow of the engine has the following three working cycles: otto cycle, miller cycle, atkinson cycle; the implementation of the Miller cycle can enable the thermal efficiency of the engine to be higher, the valve timing is adjusted by adjusting the valve timing, the valve is adjusted to be opened early or closed later, the fuel economy of the automobile can be improved by the implementation of the Atkinson cycle, and the compression stroke of the engine is required to be shorter than the working stroke, so that the engine is provided with a more complex connecting rod mechanism to realize the change of different strokes. Therefore, changing the compression ratio of the engine, the running stroke of the piston and the working cycle of the engine become the key research directions of various large engine manufacturers and various vehicle enterprises at present.

The main schemes capable of changing the power stroke of the engine at present are as follows:

1. the mechanism is realized by a complex connecting rod mechanism and a connecting rod rocker arm, the mechanism is provided with a rocker arm mechanism which is connected with a piston connecting rod, the length of a compression stroke and a working stroke of a piston can be changed through the swinging of the rocker arm, and the mechanism has the advantages of large volume, complex structure, easy damage and difficult maintenance because the mechanism changes the connecting rod mechanism of the piston, and can not dynamically adjust the compression ratio and the piston stroke.

2. The mechanical arm lifting crankshaft is realized through a whole structure, the mechanical arm lifting crankshaft mechanism is provided with a mechanical arm structure which is linked on the crankshaft, and the angle of the mechanical arm is adjusted through a servo motor, so that the up-and-down movement of the crankshaft is realized, and the compression ratio of an engine is changed. The mechanism can not change the piston stroke of the engine, so that the compression ratio of the engine can only be changed, and the structure is simpler than that of a mode of changing the piston stroke and the compression ratio by changing a piston two-rod mechanism, but the effect is not comparable with that of a technology of changing the piston stroke to change the compression ratio, and the output power of the engine can not be changed under different engine cycles.

3. The compression ratio is changed by changing the distance from the cylinder to the cylinder cover, the wedge-shaped sliding block is arranged between the cylinder body and the cylinder cover, the cylinder body can move along the inclined plane of the sliding block, so that the relative position of the combustion chamber and the top surface of the piston is changed, the volume of the combustion chamber is changed, the compression ratio is changed, the technology does not change the piston stroke of the engine, the structure is simple, but the effect is remarkably reduced when a large amount of carbon deposit is generated in the combustion chamber due to the fact that the wedge-shaped sliding block is arranged between the cylinder body and the cylinder cover.

Disclosure of Invention

The utility model aims to provide a novel hydraulic crankshaft with adjustable crankshaft rotation radius, which solves the problems that the compression ratio of a piston is changed, the stroke of the piston is changed, the output power of an engine is changed and the circulation of the engine under different working conditions is changed by changing the crankshaft crank and the rotation radius of a crank.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a novel crankshaft with hydraulically adjustable crankshaft rotation radius comprises a crankcase, a crank, a front end of the crankshaft, a rear end of the crankshaft, a connecting rod journal and a central rotary joint; a crank is arranged in the crankcase; the crank consists of a crank arm and a main shaft counterweight; the crank arm is movably connected with the main shaft counterweight; the inner side of the crank arm is provided with a connecting rod journal; the two ends of the crank are respectively connected with the front end of the crankshaft and the rear end of the crankshaft; the front end and the rear end of the crankshaft are connected with the crankcase; a hydraulic ejector rod is arranged in the crank; the hydraulic ejector rods are respectively arranged in the two cranks; the bottom of the hydraulic ejector rod is arranged in the crank arm; the head of the hydraulic ejector rod is arranged in the fixed groove; the fixed groove is arranged in the main shaft counterweight; a jacking rod is arranged in the hydraulic ejector rod; the bottom of the jacking rod is provided with a hydraulic oil cylinder; the bottom of the hydraulic cylinder is respectively connected with an oil inlet pipe and an oil outlet pipe; the oil inlet pipe is connected with an oil distributing valve A; the oil outlet pipe is connected with an oil distributing valve B; the oil distributing valve A and the oil distributing valve B are arranged in the connecting rod journal; the other ends of the oil distributing valve A and the oil distributing valve B are respectively connected with a central rotary joint through a high-pressure pipe A and a high-pressure pipe B; the other end of the central rotary joint is connected with an oil pump.

Further, two sides of the hydraulic ejector rod are respectively provided with a movable supporting connecting rod; the movable supporting connecting rod is arranged in the connecting rod sleeve; the connecting rod sleeve is internally provided with a lubricating oil groove.

Further, an oil seal is arranged at the joint of the connecting rod sleeve and the counterweight of the crank arm and the main shaft.

Further, a one-way valve A and a one-way valve B are respectively arranged on the oil inlet pipe and the oil outlet pipe.

Further, a bearing bush is arranged at the joint of the front end of the crankshaft and the rear end of the crankshaft and the crankcase

Compared with the prior art, the utility model can realize one of the following beneficial effects:

1. a crank is arranged in the crankcase; the crank consists of a crank arm and a main shaft counterweight; the crank arm is movably connected with the main shaft counterweight; the inner side of the crank arm is provided with a connecting rod journal; the two ends of the crank are respectively connected with the front end of the crankshaft and the rear end of the crankshaft; the front end and the rear end of the crankshaft are connected with the crankcase; a hydraulic ejector rod is arranged in the crank; the hydraulic ejector rods are respectively arranged in the two cranks; the bottom of the hydraulic ejector rod is arranged in the crank arm; the head of the hydraulic ejector rod is arranged in the fixed groove; the fixed groove is arranged in the main shaft counterweight; a jacking rod is arranged in the hydraulic ejector rod; the bottom of the jacking rod is provided with a hydraulic oil cylinder; the bottom of the hydraulic cylinder is respectively connected with an oil inlet pipe and an oil outlet pipe; the oil inlet pipe is connected with an oil distributing valve A; the oil outlet pipe is connected with an oil distributing valve B; the oil distributing valve A and the oil distributing valve B are arranged in the connecting rod journal; the other ends of the oil distributing valve A and the oil distributing valve B are respectively connected with a central rotary joint through a high-pressure pipe A and a high-pressure pipe B; the oil pump is connected to the central swivel joint other end, can realize through the hydraulic ram that sets up, jack up hydraulic ram through control oil pressure for crank arm and main shaft counter weight swing joint, the convenient flexible swivel radius who changes the main shaft, the disease is through inside being provided with the oil circuit, central swivel joint through the bent axle rear end setting has guaranteed that the bent axle under the rotation can realize the oil pressure and has supplied with, has realized the radius change in the bent axle work, can adjust the swivel radius of bent axle according to the engine operating mode of difference, has improved engine efficiency.

2. Two sides of the hydraulic ejector rod are respectively provided with a movable supporting connecting rod; the movable supporting connecting rod is arranged in the connecting rod sleeve; be provided with the lubrication groove in the connecting rod cover, can realize carrying out the telescopic of crank through the movable support connecting rod cooperation hydraulic pressure ejector pin that the auxiliary set up, improved the crank structural strength after the flexible.

3. The connecting rod sleeve is provided with an oil seal at the joint of the crank arm and the main shaft counterweight, so that lubricating oil in the connecting rod sleeve can be prevented from leaking through the arranged oil seal, and the lubricating effect of the movable supporting connecting rod is affected.

4. Be provided with check valve A and check valve B on advance oil pipe and the play oil pipe respectively, can realize preventing hydraulic cylinder's oil pressure leakage through the check valve that sets up, improve the pressure in the hydraulic cylinder, realize quick change crank radius through the hydraulic ram.

5. The bearing bushes are arranged at the joints of the front end of the crankshaft and the rear end of the crankshaft and the crankcase, so that the abrasion of the front end of the crankshaft and the rear end of the crankshaft and the rotation of the crankcase can be reduced through the arranged bearing bushes, and the efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model.

FIG. 2 is a schematic diagram of the crank structure of the present utility model.

FIG. 3 is a schematic view of the internal structure of the crank of the present utility model.

Fig. 4 is a schematic diagram of the hydraulic cylinder structure of the present utility model.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Example 1

A novel crankshaft with hydraulically adjustable crankshaft rotation radius comprises a crank case 1, a crank 2, a front end 3 of the crankshaft, a rear end 4 of the crankshaft, a connecting rod journal 5 and a central rotary joint 6; a crank 2 is arranged in the crankcase 1; the crank 2 is composed of a crank arm 201 and a main shaft balance weight 202; the crank arm 201 is movably connected with the main shaft balance weight 202; the inside of the crank arm 201 is provided with a connecting rod journal 5; the two ends of the crank 2 are respectively connected with a front end 3 of the crank and a rear end 4 of the crank; the front end 3 and the rear end 4 of the crankshaft are connected with the crankcase 1; a hydraulic ejector rod 7 is arranged in the crank 2; the hydraulic ejector rods 7 are respectively arranged in the two cranks 2; the bottom of the hydraulic ejector rod 7 is arranged in the crank arm 201; the head of the hydraulic ejector rod 7 is arranged in the fixed groove 707; a fixing groove 707 is provided in the main shaft weight 202; a jacking rod 706 is arranged in the hydraulic ejector rod 7; the bottom of the jacking rod 706 is provided with a hydraulic cylinder 705; the bottom of the hydraulic cylinder 705 is respectively connected with an oil inlet pipe 703 and an oil outlet pipe 704; the oil inlet pipe 703 is connected with an oil distributing valve A701; the oil outlet pipe 704 is connected with the oil distributing valve B702; oil distribution valve a701 and oil distribution valve B702 are disposed in the connecting rod journal 5; the other ends of the oil distributing valve A701 and the oil distributing valve B702 are respectively connected with the central rotary joint 6 through a high-pressure pipe A601 and a high-pressure pipe B602; the oil pump is connected to the central swivel joint 6 other end, can realize through the hydraulic ram that sets up, jack up hydraulic ram through control oil pressure for crank arm and main shaft counter weight swing joint, the convenient flexible swivel radius who changes the main shaft, the disease is through inside being provided with the oil circuit, through the central swivel joint that the bent axle rear end set up, the bent axle under having guaranteed to rotate can realize the oil pressure and supply, the radius change in the bent axle work has been realized, can adjust the swivel radius of bent axle according to the engine operating mode of difference, engine efficiency has been improved.

Example 2

On the basis of the embodiment 1, two sides of the hydraulic ejector rod 7 are respectively provided with a movable supporting connecting rod 9; the movable support connecting rod 9 is arranged in the connecting rod sleeve 901; the lubrication oil groove 903 is arranged in the connecting rod sleeve 901, so that the crank can stretch and retract by matching the movable supporting connecting rod which is arranged in an auxiliary mode with the hydraulic ejector rod, and the structural strength of the crank after stretching and retracting is improved.

Example 3

On the basis of embodiment 1, an oil seal 902 is provided at the joint between the connecting rod sleeve 901 and the crank arm 201 and the main shaft counterweight 202, so that the lubricating oil in the connecting rod sleeve can be prevented from leaking out by the provided oil seal, and the lubricating effect of the movable supporting connecting rod can be affected.

Example 4

On the basis of embodiment 1, the oil inlet pipe 703 and the oil outlet pipe 704 are respectively provided with a check valve A708 and a check valve B709, so that the oil pressure leakage of the hydraulic cylinder can be prevented through the set check valves, the pressure in the hydraulic cylinder is improved, and the crank radius can be changed quickly through the hydraulic ejector rod.

Example 5

On the basis of the embodiment 1, the bearing bushes 8 are arranged at the connecting positions of the front end 3 and the rear end 4 of the crankshaft and the crankcase 1, so that the abrasion of the front end and the rear end of the crankshaft and the rotation of the crankcase can be reduced through the arranged bearing bushes, and the efficiency is improved.

Although the utility model has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope and spirit of the principles of this disclosure. More specifically, various variations and modifications may be made to the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, drawings and claims of this application. In addition to variations and modifications in the component parts and/or arrangements, other uses will be apparent to those skilled in the art.

Claims

1. A novel crankshaft with hydraulically adjustable crankshaft rotation radius is characterized in that: the device comprises a crank case (1), a crank (2), a crank front end (3), a crank rear end (4), a connecting rod journal (5) and a central rotary joint (6); a crank (2) is arranged in the crank case (1); the crank (2) consists of a crank arm (201) and a main shaft counterweight (202); the crank arm (201) is movably connected with the main shaft counterweight (202); the inner side of the crank arm (201) is provided with a connecting rod journal (5); the two ends of the crank (2) are respectively connected with a front end (3) of the crank and a rear end (4) of the crank; the front end (3) and the rear end (4) of the crankshaft are connected with the crankcase (1); a hydraulic ejector rod (7) is arranged in the crank (2); the hydraulic ejector rods (7) are respectively arranged in the two cranks (2); the bottom of the hydraulic ejector rod (7) is arranged in the crank arm (201); the head of the hydraulic ejector rod (7) is arranged in the fixed groove (707); the fixed groove (707) is arranged in the main shaft balance weight (202); a jacking rod (706) is arranged in the hydraulic ejector rod (7); the bottom of the jacking rod (706) is provided with a hydraulic oil cylinder (705); the bottom of the hydraulic oil cylinder (705) is respectively connected with an oil inlet pipe (703) and an oil outlet pipe (704);

the oil inlet pipe (703) is connected with the oil distributing valve A (701); the oil outlet pipe (704) is connected with the oil distributing valve B (702); the oil distributing valve A (701) and the oil distributing valve B (702) are arranged in the connecting rod journal (5); the other ends of the oil distributing valve A (701) and the oil distributing valve B (702) are respectively connected with a central rotary joint (6) through a high-pressure pipe A (601) and a high-pressure pipe B (602); the other end of the central rotary joint (6) is connected with an oil pump.

2. A novel crankshaft with hydraulically adjustable crankshaft rotation radius as claimed in claim 1, wherein: two sides of the hydraulic ejector rod (7) are respectively provided with a movable supporting connecting rod (9); the movable supporting connecting rod (9) is arranged in the connecting rod sleeve (901); a lubrication groove (903) is arranged in the connecting rod sleeve (901).

3. A novel crankshaft with hydraulically adjustable crankshaft rotation radius as claimed in claim 2, wherein: an oil seal (902) is arranged at the joint of the connecting rod sleeve (901) and the main shaft counterweight (202) and the crank arm (201).

4. A novel crankshaft with hydraulically adjustable crankshaft rotation radius as claimed in claim 1, wherein: the oil inlet pipe (703) and the oil outlet pipe (704) are respectively provided with a one-way valve A (708) and a one-way valve B (709).

5. A novel crankshaft with hydraulically adjustable crankshaft rotation radius as claimed in claim 1, wherein: the connecting parts of the front end (3) and the rear end (4) of the crankshaft and the crankcase (1) are provided with bearing bushes (8).