CN112763197A

CN112763197A - High-temperature fatigue connecting rod test device

Info

Publication number: CN112763197A
Application number: CN202011585484.2A
Authority: CN
Inventors: 梁国祥; 白龙; 康毅; 刘建国; 章祥宝; 李玉
Original assignee: STATE-RUN NO 616 FACTORY
Current assignee: STATE-RUN NO 616 FACTORY
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-05-07
Anticipated expiration: 2040-12-28
Also published as: CN112763197B

Abstract

The invention discloses a high-temperature fatigue connecting rod test device which comprises a box body, wherein a damping gasket is fixedly installed at the top of the box body, a sleeve is abutted to the top of the damping gasket, and a spring is abutted to one side of the sleeve. The connecting rod test device has the advantages that the motor and the push rod are arranged, so that the working condition of a real connecting rod is fully simulated, the authenticity of an experiment is improved, the roller is driven to rotate through the motor and the transmission rod in the using process through the matching arrangement of the spring and the sleeve, the roller periodically pushes the push rod to drive the simulation piston to move up and down under the action of the spring, the use scene of the connecting rod in the real working state is simulated, the effects of good experiment effect and flexible use are achieved, and the purposes of being close to reality and high in test frequency are achieved.

Description

High-temperature fatigue connecting rod test device

Technical Field

The invention belongs to the technical field of connecting rod tests and relates to a connecting rod test device for high-temperature fatigue.

Background

The connecting rod is an important part for transmitting power in the engine, converts the linear motion of the piston into the rotary motion of the crankshaft, and bears great mechanical load. The small end of the connecting rod is connected with the piston pin and reciprocates along with the piston; the big end of the connecting rod is connected with the fish crank pin and rotates along with the crankshaft, the basic load borne by the connecting rod is tension and compression, the maximum tension load appears near the top dead center of the beginning of the intake stroke, and the maximum tension load is mainly the reciprocating inertia force generated by the piston and the part above the big end of the connecting rod; the maximum compression force occurs near the top dead center of the power stroke, primarily due to the explosive pressure experienced by the piston, which is quite large. In addition, the connecting rod is subjected to additional bending moment due to tangential inertia force generated by the left-right swinging of the connecting rod, the forces are periodically changed to form alternating load, and the connecting rod works in a combustion chamber with higher temperature, so that the high temperature resistance of the connecting rod is greatly required, and a device capable of detecting the high temperature fatigue resistance of the connecting rod is further required to detect whether the connecting rod meets the requirement.

Therefore, the existing testing device for the high-temperature fatigue resistance of the engine connecting rod has the problems of low testing frequency, long testing period, larger difference between the loading condition and the actual working condition in the actual testing process and larger difference between the testing result and the actual use.

Disclosure of Invention

Objects of the invention

The purpose of the invention is: the connecting rod test device for high-temperature fatigue is provided to solve the problems in the background technology: the test frequency is low, the test period is long, the load condition and the actual working condition are greatly different in the actual test process, and the test result and the actual use are greatly different.

(II) technical scheme

In order to solve the technical problems, the invention provides a high-temperature fatigue connecting rod test device, which comprises a box body 1, wherein one side of the box body 1, which is close to a damping gasket 2, is fixedly provided with a second support frame 11, the top of the second support frame 11 is fixedly provided with a cushion block 12, the top of the cushion block 12 is fixedly provided with a motor fixing block 13, the inside of the motor fixing block 13 is fixedly provided with a motor 14, the connecting rod test device has the effect of fully simulating the working condition of a real connecting rod through the arrangement of the motor 14 and a push rod 5 so as to improve the authenticity of an experiment, through the matching arrangement of a spring 4 and a sleeve 3, a roller 16 can be driven by the motor 14 through a transmission rod to rotate in the use process, so that the push rod 5 is periodically pushed by the roller 16 to drive a simulation piston 6 to move up and down under the action of the, thereby having the effects of good experimental effect and flexible use, achieving the purposes of being close to reality and high testing frequency, fixedly installing a transmission rod 15 at the output end of a motor 14, rotatably connecting one end of the transmission rod 15 with a roller 16, connecting one side of a motor fixing block 13 with a screw rod 18 through a thread block 17, enabling one end of the screw rod 18 to be abutted against the top of a cushion block 12, fixedly installing a damping gasket 2 at the top of a box body 1, fixedly installing an electric heating pipe 19 inside the box body 1, symmetrically distributing the two screw blocks 17 and the two screw rods 18 at two sides of the motor fixing block 13, arranging a high temperature resistant observation window at one side of the box body 1, arranging a triangular hollow structure inside the first support frame 10 and the second support frame 11, welding a hexagonal nut at the top of the screw rod 18, making the high temperature resistant observation window be made of high temperature resistant tempered glass, and making the, the two ends of a crankshaft 9 are rotatably connected with the two sides of a box body 1, the top of a damping gasket 2 is abutted with a sleeve 3, one side of the sleeve 3 is abutted with a spring 4, one end of the spring 4 is abutted with a push rod 5, the bottom of the push rod 5 is welded with a simulation piston 6, one end of the simulation piston 6 is rotatably connected with a connecting rod 8 through a rotating shaft 7, one end of the connecting rod 8 is rotatably connected with the crankshaft 9, one side of the box body 1 is fixedly provided with a first support frame 10, through the arrangement of an electric heating pipe 19 and a high-temperature resistant observation window, the connecting rod experimental device has the effects of truly simulating a high-temperature scene when the connecting rod works, being simple in structure and convenient to use, through the matching arrangement of a thread block 17 and a screw rod 18, the height of a motor 14 can be adjusted to adapt to the connecting rod 8 and the crankshaft 9 with different lengths, and an electric heating pipe 19 is matched to truly simulate the real environment temperature of the connecting rod 8 during working, so that the effects of convenient adjustment and wide application range are achieved, and the purpose of small difference between the test result and actual use is achieved.

(III) advantageous effects

The connecting rod test device for high-temperature fatigue provided by the technical scheme has the following beneficial effects:

(1) this tired connecting rod test device of high temperature, setting through motor and push rod, make this connecting rod test device possess the true connecting rod behavior of full simulation, with the effect that improves the authenticity of experiment, set up through spring and telescopic cooperation, it is rotatory to pass through the transfer line drive gyro wheel through the motor at the in-process that uses, and then realize that the gyro wheel periodically promotes the push rod and drive the simulation piston and carry out the up-and-down motion under the effect of spring, use the scene under true operating condition with the realization simulation connecting rod, thereby it is good to have played the experiment effect, use nimble effect, the reality has been reached to press close to, the purpose that frequency of software testing is high.

(2) This tired connecting rod test device of high temperature, setting through electric heating pipe and high temperature resistant observation window, make this connecting rod test device possess the high temperature scene of real simulation connecting rod during operation, and simple structure, convenient to use's effect, cooperation setting through screw thread piece and screw rod, the in-process that uses can realize the connecting rod and the bent axle of highly in order to adapt to different length of accommodate motor through rotating the screw rod, and then realize the effect that the range of application is wide, deuterogamy electric heating pipe, in order to realize the real ambient temperature of real simulation connecting rod during operation, thereby it is convenient to have played the regulation, the wide effect of range of application, the purpose that test result and in-service use difference are less has been reached.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a left side view of the present invention;

FIG. 3 is a schematic structural view of an electric heating tube according to the present invention;

FIG. 4 is a schematic view of the full-section structure of the present invention.

In the figure: 1. a box body; 2. a shock-absorbing pad; 3. a sleeve; 4. a spring; 5. a push rod; 6. simulating a piston; 7. a rotating shaft; 8. a connecting rod; 9. a crankshaft; 10. a first support frame; 11. a second support frame; 12. cushion blocks; 13. a motor fixing block; 14. a motor; 15. a transmission rod; 16. a roller; 17. a thread block; 18. a screw; 19. an electric heating tube.

Detailed Description

In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.

Referring to fig. 1 to 4, the present invention provides a technical solution: the utility model provides a tired connecting rod test device of high temperature, the power distribution box comprises a box body 1, one side fixed mounting that box 1 is close to shock attenuation gasket 2 has second support frame 11, the top fixed mounting of second support frame 11 has cushion 12, the top fixed mounting of cushion 12 has motor fixed block 13, the inside fixed mounting of motor fixed block 13 has motor 14, through the setting of motor 14 and push rod 5, make this connecting rod test device possess the true connecting rod behavior of full simulation, in order to improve the effect of the authenticity of experiment, through the cooperation setting of spring 4 and sleeve 3, can drive gyro wheel 16 through the transfer line through motor 14 in the use and rotate, and then realize gyro wheel 16 periodicity promotes push rod 5 and drive simulation piston 6 and carry out the up-and-down motion under the effect of spring 4, in order to realize the use scene of simulation connecting rod 8 under true operating condition, thereby played that the experiment is effectual, The flexible use effect is achieved, the purposes of being close to reality and high in test frequency are achieved, a transmission rod 15 is fixedly installed at the output end of a motor 14, one end of the transmission rod 15 is rotatably connected with a roller 16, one side of a motor fixing block 13 is in threaded connection with a screw rod 18 through a threaded block 17, one end of the screw rod 18 abuts against the top of a cushion block 12, a damping gasket 2 is fixedly installed at the top of a box body 1, an electric heating pipe 19 is fixedly installed inside the box body 1, the number of the screw blocks 17 and the number of the screw rods 18 are two and are symmetrically distributed on two sides of the motor fixing block 13, a high-temperature-resistant observation window is arranged on one side of the box body 1, the interiors of a first support frame 10 and a second support frame 11 are of a triangular hollow structure, a hexagonal nut is welded at the top of the screw rod 18, the high-temperature-resistant observation window, the top of the shock absorption gasket 2 is abutted with a sleeve 3, one side of the sleeve 3 is abutted with a spring 4, one end of the spring 4 is abutted with a push rod 5, the bottom of the push rod 5 is welded with a simulation piston 6, one end of the simulation piston 6 is rotatably connected with a connecting rod 8 through a rotating shaft 7, one end of the connecting rod 8 is rotatably connected with a crankshaft 9, one side of the box body 1 is fixedly provided with a first support frame 10, and through the arrangement of an electric heating pipe 19 and a high temperature resistant observation window, the connecting rod experimental device has the effects of truly simulating a high temperature scene when the connecting rod works, simple structure and convenient use, through the matching arrangement of a thread block 17 and a screw rod 18, the height of the motor 14 can be adjusted by rotating the screw rod 18 in the use process so as to adapt to connecting rods 8 and crankshafts 9 with different lengths, further, the effect of wide application range is realized, and the electric heating pipe 19, thereby having played the effect that adjusts convenience, range of application is wide, reached the purpose that the test result is less with the in-service use difference.

When the device is used, firstly, one end of an engine connecting rod 8 to be tested is arranged at one side of a crankshaft 9, the other end of the connecting rod 8 is inserted into the simulation piston 6 through a rotating shaft 7, then a motor 14 is started, a transmission rod 15 drives a roller 16 to rotate under the driving of the motor 14, due to the arrangement of a thread block 17 and a screw 18, the height of the motor 14 can be adjusted according to the connecting rods 8 with different lengths, and further the effect of wide application range is realized, when the motor 14 drives the transmission rod 15 and the roller 16 to rotate, the roller 16 pushes the top of a push rod 5, the push rod 5 is welded with the simulation piston 6, further the push rod 5 drives the simulation piston 6 to be matched with a spring 4 to realize up-down movement, and further the effect of simulating the working state of a real connecting rod is realized, due to the arrangement of an electric heating pipe 19, the electric heating pipe 19 can, and then realize that fatigue test under the high temperature state is more accurate, owing to be provided with high temperature resistant observation window to high temperature resistant observation window is made by interior high temperature tempered glass, consequently when guaranteeing higher security, can supply the user to observe the test state of box 1 inside again, owing to be provided with first support frame 10 and second support frame 11, can realize stability and security when this experimental apparatus operation.

According to the technical scheme, the connecting rod test device for high-temperature fatigue has the advantages that through the arrangement of the motor 14 and the push rod 5, the connecting rod test device can fully simulate the working condition of a real connecting rod to improve the authenticity of an experiment, through the matching arrangement of the spring 4 and the sleeve 3, the motor 14 can drive the roller 16 to rotate through the transmission rod in the use process, further, the roller 16 can periodically push the push rod 5 to drive the simulation piston 6 to move up and down under the action of the spring 4, the use scene of the connecting rod 8 in the real working state can be simulated, the effects of good experiment effect and flexible use can be achieved, the purposes of being close to reality and high in test frequency can be achieved, and through the arrangement of the electric heating pipe 19 and the high-temperature resistant observation window, the connecting rod test device can truly simulate the high-temperature scene of the connecting rod in the working process, And simple structure, convenient to use's effect, through the cooperation setting of screw thread piece 17 and screw rod 18, can realize adjusting motor 14's height through rotating screw rod 18 in the in-process of using in order to adapt to connecting rod 8 and the bent axle 9 of different length, and then realize the wide effect of range of application, cooperate electric heating pipe 19 again to realize the true ambient temperature of true simulation connecting rod 8 during operation, thereby played the effect of adjusting conveniently, range of application is wide, reached the purpose that the test result is less with the in-service use difference.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a high temperature fatigue's connecting rod test device, a serial communication port, including box (1), the top fixed mounting of box (1) has shock attenuation gasket (2), the top butt of shock attenuation gasket (2) has sleeve (3), one side butt of sleeve (3) has spring (4), the one end butt of spring (4) has push rod (5), the bottom welding of push rod (5) has simulation piston (6), the one end of simulation piston (6) is rotated through pivot (7) and is connected with connecting rod (8), the one end rotation of connecting rod (8) is connected with bent axle (9).

2. The connecting rod test device for high-temperature fatigue of claim 1, wherein a first support frame (10) is fixedly arranged on one side of the box body (1).

3. The high-temperature fatigue connecting rod test device as claimed in claim 2, wherein a second support frame (11) is fixedly mounted on one side of the box body (1) close to the damping gasket (2), a cushion block (12) is fixedly mounted on the top of the second support frame (11), and a motor fixing block (13) is fixedly mounted on the top of the cushion block (12).

4. The connecting rod test device for the high-temperature fatigue, according to claim 3, is characterized in that a motor (14) is fixedly installed inside the motor fixing block (13), a transmission rod (15) is fixedly installed at the output end of the motor (14), one end of the transmission rod (15) is rotatably connected with a roller (16), one side of the motor fixing block (13) is in threaded connection with a screw rod (18) through a threaded block (17), and one end of the screw rod (18) abuts against the top of the cushion block (12).

5. The high temperature fatigue connecting rod test device according to claim 4, wherein an electric heating pipe (19) is fixedly installed inside the box body (1).

6. The connecting rod test device for high-temperature fatigue according to claim 5, wherein the number of the thread blocks (17) and the number of the screw rods (18) are two, the two thread blocks and the screw rods are symmetrically distributed on two sides of the motor fixing block (13), and hexagonal nuts are welded on the tops of the screw rods (18).

7. The connecting rod test device of high temperature fatigue of claim 6, characterized in that one side of the box body (1) is provided with a high temperature resistant observation window, and the high temperature resistant observation window is made of high temperature resistant toughened glass.

8. The high temperature fatigue connecting rod test device according to claim 7, wherein the inside of the first support frame (10) and the second support frame (11) is a triangular hollow structure.

9. The connecting rod test device for high temperature fatigue of claim 8, wherein the material of the shock absorbing pad (2) is rubber.

10. The connecting rod test device for high temperature fatigue of claim 9, wherein both ends of the crankshaft (9) are rotatably connected with both sides of the case (1).