Crankshaft detection equipment

Abstract

The utility model discloses crankshaft detection equipment, which belongs to the field of detection equipment and comprises a crankshaft body and a detection table, one end of the crankshaft body is provided with a front end shaft, the other end of the crankshaft body is provided with a rear end shaft, and the side wall of the rear end shaft is provided with a plurality of mounting holes. A detection mechanism used for detecting the bending degree of the crankshaft body is arranged in the detection table, the detection mechanism comprises a motor, a rotating disc, a positioning rod, a first air cylinder, a supporting plate, a second air cylinder, a first L-shaped plate, a third air cylinder, a second L-shaped plate and a dial indicator, the motor is fixedly connected to the side wall of the detection table, and the rotating disc is fixedly connected to the output end of the motor; and the arranged detection mechanism can achieve the purpose of rapidly detecting the bending degrees of crankshaft bodies with different lengths, the detection operation is simple and convenient, time and labor are saved, manual detection is not needed, and the detection efficiency and the detection precision of the crankshaft are further improved.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment, and in particular to a crankshaft testing device. Background Technology

[0002] The crankshaft is the most important component in an engine. It bears the force transmitted from the connecting rod and converts it into torque, which is then output through the crankshaft to drive other accessories on the engine. The crankshaft is subjected to the combined effects of centrifugal force from the rotating mass, periodically changing gas inertial force, and reciprocating inertial force, resulting in bending and torsional loads. Therefore, the crankshaft is required to have sufficient strength and rigidity, and the journal surfaces must be wear-resistant, operate evenly, and have good balance.

[0003] In existing technology, to ensure the stability of engine operation, crankshafts often need to have their bending degree tested using testing equipment after production. Currently, when testing the bending degree of a crankshaft, the crankshaft needs to be placed on a symmetrical support base on the top surface of a flat plate, pre-adjusted according to the crankshaft length. Then, a magnetic gauge holder is placed on the flat plate, and the dial indicator is fixed to the magnetic gauge holder bracket. The position of the dial indicator is adjusted so that the gauge head is aligned with the main journal of the crankshaft and pre-pressed. Then, the two ends of the crankshaft on the support base are manually rotated to... During crankshaft rotation, the dial indicator is used to observe the data to determine if the crankshaft is bent, thus completing the crankshaft bending test. When testing crankshafts of different lengths, the positions of the tools required for each test need to be readjusted. As a result, the crankshaft bending test using the above method requires manual operation step by step, which is cumbersome, time-consuming, and labor-intensive, resulting in low efficiency in crankshaft bending test. At the same time, various errors that occur during manual testing reduce the accuracy of crankshaft testing. Utility Model Content

[0004] The main purpose of this invention is to provide a crankshaft testing device that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A crankshaft testing device includes a crankshaft body and a testing platform. One end of the crankshaft body has a front end shaft, and the other end has a rear end shaft. The side wall of the rear end shaft has several mounting holes. The testing platform has an internal testing mechanism for detecting the curvature of the crankshaft body. The testing mechanism includes a motor, a rotating disk, a positioning rod, a first cylinder, a support plate, a second cylinder, a first L-shaped plate, a third cylinder, a second L-shaped plate, and a dial indicator. The motor is fixedly connected to the side wall of the testing platform, and the rotating disk is fixedly connected to the output end of the motor. A positioning rod is fixedly connected to the other side wall of the rotating disk. The first cylinder is fixedly connected to the side wall of the bottom plate of the crankshaft body, and the support plate is fixedly connected to the output end of the first cylinder through the connecting plate of the bottom surface. The second cylinder is fixedly connected to the side wall of the top plate of the crankshaft body, and the first L-shaped plate is fixedly connected to the output end of the second cylinder through the side plate of the top surface. The third cylinder is fixedly connected to the top surface of the first L-shaped plate, and the second L-shaped plate is fixedly connected to the output end of the third cylinder. The dial indicator is fixedly connected to the front wall of the second L-shaped plate.

[0007] In a preferred embodiment, a motor is fixedly installed on the lower left side wall of the testing platform, and a rotating disk is fixedly installed on the output end of the motor. A positioning rod corresponding to the mounting hole is fixedly installed on the right side wall of the rotating disk, and the positioning rod is inserted into the mounting hole.

[0008] In a preferred embodiment, a first transverse opening is provided on the right side of the inner bottom surface of the testing platform, and a base plate is fixedly installed on the bottom surface of the testing platform. A first cylinder is fixedly installed on the left side wall of the base plate, and a connecting plate is fixedly installed on the output end of the first cylinder. The connecting plate is movably installed in the first transverse opening, and a support plate is fixedly installed on the top surface of the connecting plate. A through hole is provided on the side wall of the support plate, and the front end shaft is inserted into the through hole.

[0009] In a preferred embodiment, a fixing plate is fixedly installed on the left side of the top surface of the testing platform, and a second transverse opening is provided on the top surface of the testing platform. Guide strips are fixedly installed on the front and rear side walls inside the second transverse opening, respectively.

[0010] In a preferred embodiment, the second cylinder is fixedly mounted on the left side wall of the fixed plate, and a side plate is fixedly mounted on the output end of the second cylinder. A first L-shaped plate is fixedly mounted on the bottom surface of the side plate, and guide grooves corresponding to guide bars are respectively opened on the front and rear side walls of the horizontal part of the first L-shaped plate. A sliding opening is also opened on the front wall of the horizontal part of the first L-shaped plate. A third cylinder is fixedly mounted on the top surface of the horizontal part of the first L-shaped plate. A slider is fixedly mounted on the rear wall of the horizontal part of the second L-shaped plate and movably mounted in the sliding opening. A dial indicator is fixedly mounted on the front wall of the vertical part of the second L-shaped plate.

[0011] In a preferred embodiment, a controller is also fixedly installed on the right side wall of the testing station, and the motor, the first cylinder, the second cylinder, the third cylinder and the dial indicator are electrically connected to the controller.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this invention, the detection mechanism, when detecting the curvature of the crankshaft body, inserts the positioning rod installed on the right side wall of the rotating disk into the mounting hole opened on the rear end shaft of one end of the crankshaft body. Then, the first cylinder drive output end moves the support plate to the left via the connecting plate until the front end shaft of the other end of the crankshaft body passes through the connecting plate, providing support during crankshaft body detection. Next, the second cylinder drive output end pushes the first L-shaped plate via the side plate, moving the dial indicator so that the dial indicator head is above the main journal of the crankshaft body. Finally, the third cylinder drive output end pushes the second L-shaped plate downwards. The dial indicator is moved downwards to contact and preload the crankshaft body's main journal. Then, the motor drive output is turned on to rotate the rotating disk. The rotating disk, via the positioning rod, drives the crankshaft body to rotate. During this rotation, the dial indicator detects the curvature of the crankshaft body. Simultaneously, by adjusting the support plate, crankshaft bodies of different lengths can be supported for curvature detection. This facilitates rapid detection of the curvature of crankshaft bodies of varying lengths. The detection operation is simple, convenient, time-saving, and labor-saving, eliminating the need for manual inspection and thus improving the efficiency and accuracy of crankshaft inspection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of the crankshaft body of this utility model;

[0016] Figure 3 This is a schematic diagram of the overall structure of the testing station of this utility model;

[0017] Figure 4 This is a structural breakdown diagram of the testing mechanism of this utility model.

[0018] In the diagram: 1. Crankshaft body; 2. Front shaft; 3. Rear shaft; 4. Mounting hole; 5. Testing platform; 6. Controller; 7. Testing mechanism; 8. Motor; 9. Rotary disk; 10. Positioning rod; 11. First transverse opening; 12. Base plate; 13. First cylinder; 14. Support plate; 15. Connecting plate; 16. Through hole; 17. Fixing plate; 18. Second transverse opening; 19. Guide bar; 20. Second cylinder; 21. First L-shaped plate; 22. Guide groove; 23. Side plate; 24. Third cylinder; 25. Sliding port; 26. Second L-shaped plate; 27. Slider; 28. Dial indicator. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figure 1 - Figure 4 As shown, a crankshaft testing device includes a crankshaft body 1 and a testing platform 5. One end of the crankshaft body 1 is provided with a front end shaft 2, and the other end of the crankshaft body 1 is provided with a rear end shaft 3. Several mounting holes 4 are opened on the side wall of the rear end shaft 3. The testing platform 5 is provided with a testing mechanism 7 for testing the curvature of the crankshaft body 1. The testing mechanism 7 includes a motor 8, a rotating disk 9, a positioning rod 10, a first cylinder 13, a support plate 14, a second cylinder 20, a first L-shaped plate 21, a third cylinder 24, a second L-shaped plate 26, and a dial indicator 28. The motor 8 is fixedly connected to the side wall of the testing platform 5, and the rotating disk 9 is fixedly connected to the output end of the motor 8. On the other side wall of the rotating disk 9, a positioning rod 10 is fixedly connected. The first cylinder 13 is fixedly connected to the side wall of the bottom plate 12 of the crankshaft body 1, and the support plate 14 is fixedly connected to the output end of the first cylinder 13 through the connecting plate 15 on the bottom surface. The second cylinder 20 is fixedly connected to the side wall of the top fixing plate 17 of the crankshaft body 1, and the first L-shaped plate 21 is fixedly connected to the output end of the second cylinder 20 through the side plate 23 on the top surface. The third cylinder 24 is fixedly connected to the top surface of the first L-shaped plate 21, and the second L-shaped plate 26 is fixedly connected to the output end of the third cylinder 24. The dial indicator 28 is fixedly connected to the front wall of the second L-shaped plate 26.

[0021] like Figure 3As shown, a motor 8 is fixedly installed on the lower left side wall of the testing platform 5, and a rotating disk 9 is fixedly installed on the output end of the motor 8. A positioning rod 10 corresponding to the mounting hole 4 is fixedly installed on the right side wall of the rotating disk 9, and the positioning rod 10 is inserted into the mounting hole 4. When the motor 8 is turned on, the output end drives the rotating disk 9 to rotate, so that the positioning rod 10 installed on the right side wall of the rotating disk 9 and inserted into the mounting hole 4 can drive the crankshaft body 1 to rotate by itself, so as to complete the bending detection of the crankshaft body 1 during the rotation process.

[0022] like Figure 3 As shown, a first transverse opening 11 is provided on the right side of the inner bottom surface of the testing platform 5, and a base plate 12 is fixedly installed on the bottom surface of the testing platform 5. A first cylinder 13 is fixedly installed on the left side wall of the base plate 12, and a connecting plate 15 is fixedly installed on the output end of the first cylinder 13. The connecting plate 15 is movably installed in the first transverse opening 11, and a support plate 14 is fixedly installed on the top surface of the connecting plate 15. A through hole 16 is provided on the side wall of the support plate 14, and the front end shaft 2 is inserted into the through hole 16. After the output end of the first cylinder 13 installed on the side wall of the base plate 12 is opened, the connecting plate 15 is driven to move to the left in the first transverse opening 11. After the connecting plate 15 drives the support plate 14 to move to the left in the inner bottom surface of the testing platform 5, the front end shaft 2 of the other end of the crankshaft body 1 passes through the through hole 16 opened on the support plate 14. It can support the crankshaft body 1 according to the length of the crankshaft body 1, so as to achieve the purpose of supporting and testing the integrity of crankshafts of different lengths.

[0023] like Figure 3 As shown, a fixing plate 17 is fixedly installed on the left side of the top surface of the testing table 5. The fixing plate 17 is used to fix the second cylinder 20. The top surface of the testing table 5 is provided with a second transverse opening 18. Guide bars 19 are fixedly installed on the front and rear side walls inside the second transverse opening 18 respectively. The guide bars 19 can move laterally inside the second transverse opening 18 through the guide groove 22 via the first L-shaped plate 21.

[0024] like Figure 4As shown, the second cylinder 20 is fixedly installed on the left side wall of the fixed plate 17, and a side plate 23 is fixedly installed on the output end of the second cylinder 20. A first L-shaped plate 21 is fixedly installed on the bottom surface of the side plate 23, and guide grooves 22 corresponding to guide bars 19 are respectively opened on the front and rear side walls of the horizontal part of the first L-shaped plate 21. A sliding opening 25 is also opened on the front wall of the horizontal part of the first L-shaped plate 21, and a third cylinder 24 is fixedly installed on the top surface of the horizontal part of the first L-shaped plate 21. A slider 27 is fixedly installed on the rear wall of the horizontal part of the second L-shaped plate 26 and movably installed in the sliding opening 25. A slider 27 is fixedly installed on the front wall of the vertical part of the second L-shaped plate 26. A dial indicator 28 is fixedly installed. When the second cylinder 20 is turned on, the output end drives the first L-shaped plate 21 through the side plate 23. The first L-shaped plate 21 passes through the guide groove 22 and follows the guide bar 19 into the second transverse opening 18. After the dial indicator 28 is placed above the main journal of the crankshaft body 1, the third cylinder 24 is turned on to drive the output end to push the second L-shaped plate 26 downward. The slider 27 slides in the sliding opening 25. After the dial indicator 28 contacts the main journal to complete the preload, the bending degree of the crankshaft body 1 can be detected by the dial indicator 28 when the crankshaft body 1 is rotating. The dial indicator 28 is an electronic dial indicator.

[0025] like Figure 1 As shown, a controller 6 is also fixedly installed on the right side wall of the testing platform 5, and the motor 8, the first cylinder 13, the second cylinder 20, the third cylinder 24 and the dial indicator 28 are electrically connected to the controller 6. The controller 6 can control the entire testing mechanism 7 to complete the rapid testing of the crankshaft body 1.

[0026] The specific operation of the testing agency 7 in detecting the curvature of the crankshaft body 1 is as follows:

[0027] First, the crankshaft body 1 is placed between the rotating disk 9 and the support plate 14. The positioning rod 10, mounted on the right side wall of the rotating disk 9, is inserted into the corresponding mounting hole 4 on the rear end shaft 3 mounted on the left end of the crankshaft body 1. Then, the controller 6 activates the first cylinder 13 mounted on the left side wall of the base plate 12. The first cylinder 13 drives the connecting plate 15 to slide within the first transverse opening 11. The connecting plate 15 then moves the support plate 14 synchronously on the inner bottom surface of the testing platform 5 until the front end shaft 2 mounted on the right end of the crankshaft body 1 passes through the through hole 16 on the side wall of the support plate 14. Afterward, the controller 6 activates the first cylinder 13 mounted on the left side wall of the base plate 12. The second cylinder 20, mounted on the left side wall of the fixed plate 17, is activated. The second cylinder 20 pushes the side plate 23 with its drive output end, causing the side plate 23 to move the first L-shaped plate 21 along the guide bar 19 through the guide groove 22 on the front and rear rear walls of the transverse portion, into the second transverse opening 18 on the top surface of the testing table 5, until the dial indicator 28's head moves above the main journal of the crankshaft body 1. Then, the third cylinder 24, mounted on the top surface of the transverse portion of the first L-shaped plate 21, is activated by a hexagonal crank. The third cylinder 24 pushes the second L-shaped plate 26 downwards with its drive output end. The second L-shaped plate 26, mounted on the rear wall of the transverse portion... The slider 27 will slide in the sliding opening 25 on the front wall of the vertical part of the first L-shaped plate 21 until the dial indicator 28 installed on the front wall of the vertical part of the second L-shaped plate 26 contacts the main journal of the crankshaft body 1 and completes the pre-load operation of the dial indicator 28. Finally, the motor 8 installed on the left side wall of the test bench 5 is turned on by the controller 6. The motor 8 will drive the output end to rotate the rotating disk 9. At this time, because the positioning rod 10 is inserted into the mounting hole 4, the rotating disk 9 will drive the crankshaft body 1 to rotate through the positioning rod 10. During the rotation, the crankshaft body 1 is judged by observing the change of the value displayed by the dial indicator 28. The bending degree of crankshaft body 1 can be detected by checking whether body 1 is bent. By adjusting the support plate 14, the bending degree of crankshaft body 1 of different lengths can be detected after support. Specifically, after the positioning rod 10 is inserted into the mounting hole 4, the controller 6 can complete the support of crankshaft body 1, the position adjustment of dial indicator 28, and the detection operation of crankshaft body 1 during rotation. This achieves the purpose of quickly detecting the bending degree of crankshaft body 1 of different lengths. The detection operation is simple, convenient, time-saving, and labor-saving, and no manual detection is required, thereby improving the detection efficiency and accuracy of crankshaft.

[0028] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0029] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0030] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A crankshaft testing device, comprising a crankshaft body (1) and a testing table (5), wherein one end of the crankshaft body (1) is provided with a front end shaft (2) and the other end of the crankshaft body (1) is provided with a rear end shaft (3), wherein a plurality of mounting holes (4) are provided on the side wall of the rear end shaft (3), characterized in that: The testing platform (5) is equipped with a testing mechanism (7) for testing the curvature of the crankshaft body (1). The testing mechanism (7) includes a motor (8), a rotating disk (9), a positioning rod (10), a first cylinder (13), a support plate (14), a second cylinder (20), a first L-shaped plate (21), a third cylinder (24), a second L-shaped plate (26), and a dial indicator (28). The motor (8) is fixedly connected to the side wall of the testing platform (5), and the rotating disk (9) is fixedly connected to the output end of the motor (8). The positioning rod (10) is fixedly connected to the other side wall of the rotating disk (9), and the first cylinder (13) is fixedly connected to the... On the side wall of the bottom plate (12) of the crankshaft body (1), the support plate (14) is fixedly connected to the output end of the first cylinder (13) through the connecting plate (15) of the bottom surface. The second cylinder (20) is fixedly connected to the side wall of the top plate (17) of the crankshaft body (1). The first L-shaped plate (21) is fixedly connected to the output end of the second cylinder (20) through the side plate (23) of the top surface. The third cylinder (24) is fixedly connected to the top surface of the first L-shaped plate (21). The second L-shaped plate (26) is fixedly connected to the output end of the third cylinder (24). The dial indicator (28) is fixedly connected to the front wall of the second L-shaped plate (26).

2. The crankshaft testing device according to claim 1, characterized in that: A motor (8) is fixedly installed on the lower left side wall of the testing platform (5), and a rotating disk (9) is fixedly installed on the output end of the motor (8). A positioning rod (10) corresponding to the mounting hole (4) is fixedly installed on the right side wall of the rotating disk (9), and the positioning rod (10) is inserted into the mounting hole (4).

3. The crankshaft testing device according to claim 2, characterized in that: The testing platform (5) has a first transverse opening (11) on the right side of its inner bottom surface, and a base plate (12) is fixedly installed on the bottom surface of the testing platform (5). A first cylinder (13) is fixedly installed on the left side wall of the base plate (12), and a connecting plate (15) is fixedly installed on the output end of the first cylinder (13). The connecting plate (15) is movably installed in the first transverse opening (11), and a support plate (14) is also fixedly installed on the top surface of the connecting plate (15). A through hole (16) is opened on the side wall of the support plate (14), and the front end shaft (2) is inserted into the through hole (16).

4. The crankshaft testing device according to claim 3, characterized in that: A fixing plate (17) is fixedly installed on the left side of the top surface of the testing table (5), and a second transverse opening (18) is opened on the top surface of the testing table (5). Guide strips (19) are fixedly installed on the front and rear side walls inside the second transverse opening (18).

5. The crankshaft testing device according to claim 4, characterized in that: The second cylinder (20) is fixedly installed on the left side wall of the fixed plate (17), and a side plate (23) is fixedly installed on the output end of the second cylinder (20). A first L-shaped plate (21) is fixedly installed on the bottom surface of the side plate (23), and guide grooves (22) corresponding to guide bars (19) are respectively opened on the front and rear side walls of the horizontal part of the first L-shaped plate (21). A sliding opening (25) is also opened on the front wall of the horizontal part of the first L-shaped plate (21), and a third cylinder (24) is fixedly installed on the top surface of the horizontal part of the first L-shaped plate (21). A slider (27) is fixedly installed on the rear wall of the horizontal part of the second L-shaped plate (26) and is movably installed in the sliding opening (25). A dial indicator (28) is fixedly installed on the front wall of the vertical part of the second L-shaped plate (26).

6. The crankshaft testing device according to claim 5, characterized in that: A controller (6) is also fixedly installed on the right side wall of the testing platform (5), and the motor (8), the first cylinder (13), the second cylinder (20), the third cylinder (24) and the dial indicator (28) are electrically connected to the controller (6).

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