High-precision automobile engine crankshaft structure

Abstract

The utility model discloses a high-precision automobile engine crankshaft structure, and particularly relates to the technical field of crankshafts, the high-precision automobile engine crankshaft structure comprises a flywheel output ring and a vibration detection assembly, the side edge of the flywheel output ring is connected with a front shaft body, and the side, away from the flywheel output ring, of the front shaft body is provided with a rear shaft body; the vibration detection assembly is arranged on the side, away from the front shaft body, of the rear shaft body, and an output shaft is installed on the side, away from the rear shaft body, of the vibration detection assembly. The vibration detection assembly detects operation of the crankshaft, vibration of the crankshaft is transmitted to the connecting ring at the moment, a vibration detection probe of the vibration detection assembly is located in a detection groove of the connecting ring at the moment, and then the position of the vibration detection probe is limited by the detection groove so as to maintain stability of the vibration detection probe during detection. And at the moment, the vibration detection assembly detects the operation of the crankshaft and obtains the vibration frequency in the operation process of the crankshaft, so that whether the crankshaft is influenced by vibration or not can be conveniently confirmed.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshafts, and more specifically, to a high-precision automobile engine crankshaft structure. Background Art

[0002] The engine crankshaft is the core component of the internal combustion engine. Its main function is to convert the reciprocating linear motion of the piston into rotational motion. The crankshaft is connected to the piston through a connecting rod. The connecting rod converts the high-pressure gas force generated by the piston in the combustion chamber into the rotational torque of the crankshaft, which in turn drives the engine crankshaft to rotate, and transmits the power to the transmission through the crankshaft output shaft, ultimately driving the wheels of the car.

[0003] After searching, the existing application number is: CN201480006615.3, which discloses a crankshaft having a front end, a rear end and a central axis extending from the front end to the rear end, including a front crank pin, a rear crank pin and one or more middle crank pins. The front crank pin is located near the front end, and the rear crank pin is located near the rear end. In addition, one or more middle crank pins are located approximately equidistant from the front crank pin and the rear crank pin. The crankshaft also includes a pair of balancing blocks arranged on each side of the front crank pin, the rear crank pin and the one or more middle crank pins. The balancing blocks are arranged so that the individual balancing blocks in each pair of balancing blocks are offset at an angle relative to each other. In the process of implementing the utility model, the inventor found that the prior art has the following problems:

[0004] During the operation of the existing crankshaft, it is impossible to determine whether the crankshaft can maintain high-precision operation, and it is impossible to timely confirm whether the crankshaft is affected by vibration. At the same time, when the crankshaft is inspected, it is impossible to immediately confirm the wear of the parts inside the crankshaft.

[0005] Therefore, in view of the above problems, a high-precision automobile engine crankshaft structure is proposed. Utility Model Content

[0006] In order to overcome the above defects of the prior art, the utility model provides a high-precision automobile engine crankshaft structure to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-precision automobile engine crankshaft structure, comprising a flywheel output ring and a vibration detection component, the side of the flywheel output ring is connected to a front axle body, and a rear axle body is arranged on the side of the front axle body away from the flywheel output ring, the vibration detection component is arranged on the side of the rear axle body away from the front axle body, and an output shaft is installed on the side of the vibration detection component away from the rear axle body.

[0008] Preferably, the vibration detection assembly includes a vibration detection probe, a fixing ring and a support ring, and a fixing ring is arranged at the center of the two groups of vibration detection probes, and a support ring is arranged on the side of the two groups of vibration detection probes away from the front shaft body.

[0009] Preferably, a driving gear is arranged at the center of the flywheel output ring and the front shaft body, a bearing cover is arranged on the side of the driving gear away from the flywheel output ring, and a balancing block is arranged on the side of the bearing cover away from the driving gear.

[0010] Preferably, a first wear belt is provided on a side of the balancing block away from the front axle body, and a first wear belt is provided at the center of the balancing block and the front axle body.

[0011] Preferably, a connecting ring is provided on a side of the vibration detection component away from the output shaft, and two groups of detection grooves are provided on a side of the connecting ring away from the rear axle body, and the two groups of detection grooves and the vibration detection probe are tightly fitted.

[0012] Preferably, a connecting gear is meshed on the left side of the driving gear, and a connecting rod journal is provided on the side of the balancing block away from the bearing cover, and a crank arm is provided on the side of the connecting rod journal away from the balancing block, and a main journal arm is provided on the side of the crank arm away from the connecting rod journal.

[0013] Technical effects and advantages of the utility model:

[0014] 1. Compared with the prior art, this high-precision automobile engine crankshaft structure detects the crankshaft operation process through a vibration detection component. When the crankshaft is running, the vibration of the crankshaft is transmitted to the connecting ring. At this time, the vibration detection probe of the vibration detection component is inside the detection groove of the connecting ring. Then the position of the vibration detection probe is restricted by the detection groove to maintain the stability of the vibration detection probe during detection. At this time, the vibration detection component detects the operation of the crankshaft and obtains the vibration frequency during the operation of the crankshaft, so as to easily confirm whether the crankshaft is affected by the vibration.

[0015] 2. Compared with the prior art, this high-precision automobile engine crankshaft structure is used through a first wear belt and a second wear belt, wherein the first wear belt is located at the position of the balancing block, and the second wear belt is located at the position of the front axle body. When the balancing block or the front axle body is located at the position of the wear belt and wears during operation, since the inside of the wear belt has color stratification, when the wear belt is worn, during the inspection and maintenance of the crankshaft, the color of the wear belt can be used to confirm whether the crankshaft is affected and whether it can maintain high-precision operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a front view structural diagram of the flywheel output ring of the utility model.

[0017] Figure 2 It is a schematic structural diagram of the first wear belt of the utility model.

[0018] Figure 3 For the utility model Figure 2 Schematic diagram of the structure at A in the middle.

[0019] Figure 4 It is a structural schematic diagram of the vibration detection component of the utility model.

[0020] Figure 5 It is a structural schematic diagram of the right side cross section of the vibration detection probe of the present utility model.

[0021] The accompanying drawings are marked as follows: 1. flywheel output ring; 2. drive gear; 3. connecting gear; 4. bearing cover; 5. balance block; 6. connecting rod journal; 7. crank arm; 8. main journal; 9. connecting ring; 10. detection groove; 11. vibration detection assembly; 12. front axle body; 13. first wear belt; 14. second wear belt; 15. rear axle body; 16. output shaft; 17. vibration detection probe; 18. fixing ring; 19. support ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] As attached Figures 1 to 5 A high-precision automobile engine crankshaft structure shown includes a flywheel output ring 1 and a vibration detection component 11, the side of the flywheel output ring 1 is connected to a front axle body 12, and a rear axle body 15 is arranged on the side of the front axle body 12 away from the flywheel output ring, the vibration detection component 11 is arranged on the side of the rear axle body 15 away from the front axle body 12, and an output shaft 16 is installed on the side of the vibration detection component 11 away from the rear axle body 15.

[0025] Among them: when the crankshaft is in use, the crankshaft rotates, and when the crankshaft rotates, the crankshaft is worn during operation, and a first wear belt 13 and a second wear belt 14 are respectively placed on the outer surfaces of the front shaft body 12 and the balance block 5, wherein the wear belt is a strip with color changes so that it can be observed by the naked eye when it is worn to a certain extent. At the same time, when the crankshaft is rotating, the crankshaft vibrates, so that the vibration generated by the crankshaft is detected by the vibration detection component 11. The frequency of the vibration is detected, so as to confirm whether the crankshaft has wear problems during operation through the vibration frequency of the crankshaft, thereby affecting the accuracy during operation.

[0026] Example 2

[0027] Based on Example 1, the solution in Example 1 is further detailed in combination with the following specific working method. Figures 1 to 5 As shown, see the following description for details:

[0028] As a preferred embodiment, the vibration detection assembly 11 includes a vibration detection probe 17, a fixing ring 18 and a support ring 19, and a fixing ring 18 is arranged at the center of the two groups of vibration detection probes 17, and a support ring 19 is arranged on the side of the two groups of vibration detection probes 17 away from the front axle body 12, wherein the fixing ring 18 is placed on both sides of the inner wall of the vibration detection probe 17, and when the vibration detection probe 17 is in the process of detection, the fixing ring 18 connected to the vibration detection probe 17 supports the vibration detection probe 17 to maintain the balance of the vibration detection probe 17, and then the fixing ring 18 cooperates with the support ring 19 to support and fix the vibration detection probe 17.

[0029] As a preferred embodiment, a driving gear 2 is arranged at the center of the flywheel output ring 1 and the front shaft body 12, and a bearing cap 4 is arranged on the side of the driving gear 2 away from the flywheel output ring 1, and a balancing block 5 is arranged on the side of the bearing cap 4 away from the driving gear 2, and the flywheel output ring 1 is the part of the flywheel used to connect or transmit power. The flywheel is installed at the power output end of the crankshaft, which plays the role of storing energy and maintaining the engine speed stable. The main function of the driving gear 2 in the crankshaft is to transmit the rotational motion of the crankshaft to the front shaft body 12 through gear transmission, and the bearing cap 4 is used to seal the bearing placed inside.

[0030] As a preferred embodiment, a first wear band 13 is provided on the side of the balancing block 5 away from the front axle body 12, and a first wear band 13 is provided at the center of the balancing block 5 and the front axle body 12, wherein the first wear band 13 is provided at the top end of the balancing block 5, and when the first wear band 13 is driven by the balancing block 5 to contact other structures during the movement, the first wear band 13 is constantly in contact with the structure, so that when the first wear band 13 is worn, the color layer of the first wear band 13 changes, so as to facilitate confirmation of whether wear occurs during the operation of the crankshaft, and the specific conditions of the wear are confirmed by the color layer of the worn and retained part of the first wear band 13, and the second wear band 14 is used to confirm whether wear occurs by the color exposed after wear.

[0031] As a preferred embodiment, a connecting ring 9 is provided on the side of the vibration detection component 11 away from the output shaft 16, and two groups of detection grooves 10 are provided on the side of the connecting ring 9 away from the rear axle body 15, and the two groups of detection grooves 10 and the vibration detection probe 17 are tightly fitted. When the vibration detection component 11 is performing detection, the vibration detection probe 17 is located inside the detection groove 10 in the connecting ring 9, so that the detection groove 10 is used to limit the contact point between the vibration detection probe 17 and the connecting ring 9 from being changed due to the movement of the crankshaft.

[0032] As a preferred embodiment, a connecting gear 3 is meshed on the left side of the driving gear 2, and a connecting rod journal 6 is provided on the side of the balancing block 5 away from the bearing cover 4, and a crank arm 7 is provided on the side of the connecting rod journal 6 away from the balancing block 5, and a main journal 8 is provided on the side of the crank arm 7 away from the connecting rod journal 6, and the connecting gear 3 is connected to the driving gear 2. When the driving gear 2 rotates, the connecting gear 3 connected to the driving gear 2 also vibrates. The connection with the connecting gear 3 can reduce the vibration of the driving gear 2, and the amplitude of the vibration of the driving gear 2 caused by its vibration is limited by the connecting gear 3.

[0033] The working process of the utility model is as follows: first, the output shaft 16 provides power to drive the crankshaft to move, and then when the crankshaft is in operation, the vibration is transmitted to the connecting ring 9, and the detection groove 10 in the connecting ring 9 transmits the vibration to the vibration detection component 11. At this time, the vibration detection probe 17 inside the detection groove 10 is connected to the detection groove 10, so that the vibration detection probe 17 detects the vibration generated during the operation of the crankshaft, thereby capturing the vibration and force changes generated during the rotation of the crankshaft. Then, through the vibration information collected, it is confirmed whether the operation of the crankshaft is fixed and affects the overall accuracy of the crankshaft. Then, during the operation of the crankshaft, the first wear belt 13 above the balance block 5 will facilitate the operator to confirm the wear of the balance block 5 through the wear change of the color layer inside it, and the second wear belt 14 is placed above the front shaft body 12. When the second wear belt 14 set in the front shaft body 12 is worn during the rotation of the front shaft body 12, it confirms the wear of the front shaft body 12 by exposing the color inside the second wear belt 14. The above is the working principle of this high-precision automobile engine crankshaft structure.

[0034] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A high-precision automobile engine crankshaft structure, comprising a flywheel output ring (1) and a vibration detection component (11), characterized in that: The side of the flywheel output ring (1) is connected to a front shaft body (12), and a rear shaft body (15) is arranged on a side of the front shaft body (12) away from the flywheel output ring; the vibration detection component (11) is arranged on a side of the rear shaft body (15) away from the front shaft body (12), and an output shaft (16) is installed on a side of the vibration detection component (11) away from the rear shaft body (15).

2. A high-precision automobile engine crankshaft structure according to claim 1, characterized in that: The vibration detection assembly (11) comprises a vibration detection probe (17), a fixing ring (18) and a support ring (19), wherein the fixing ring (18) is arranged at the center of the two groups of vibration detection probes (17), and the support ring (19) is arranged on the side of the two groups of vibration detection probes (17) away from the front shaft body (12).

3. The high-precision automobile engine crankshaft structure according to claim 1, characterized in that: A driving gear (2) is arranged at the center of the flywheel output ring (1) and the front shaft body (12), a bearing cover (4) is arranged on the side of the driving gear (2) away from the flywheel output ring (1), and a balancing block (5) is arranged on the side of the bearing cover (4) away from the driving gear (2).

4. A high-precision automobile engine crankshaft structure according to claim 3, characterized in that: A first wear belt (13) is provided on a side of the balancing block (5) away from the front axle body (12), and a first wear belt (13) is provided at the center of the balancing block (5) and the front axle body (12).

5. The high-precision automobile engine crankshaft structure according to claim 2, characterized in that: A connecting ring (9) is provided on the side of the vibration detection component (11) away from the output shaft (16), and two groups of detection grooves (10) are provided on the side of the connecting ring (9) away from the rear axle body (15), and the two groups of detection grooves (10) and the vibration detection probe (17) are tightly fitted.

6. The high-precision automobile engine crankshaft structure according to claim 3, characterized in that: The left side of the driving gear (2) is meshed with a connecting gear (3), and a connecting rod journal (6) is provided on the side of the balancing block (5) away from the bearing cover (4), and a crank arm (7) is provided on the side of the connecting rod journal (6) away from the balancing block (5), and a main journal arm (8) is provided on the side of the crank arm (7) away from the connecting rod journal (6).

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