A comprehensive gauge for detecting a position angle of a crankshaft oil hole

Abstract

The application discloses a comprehensive testing fixture for detecting the position angle of a crankshaft oil hole, which comprises a supporting base, a rotating supporting clamp arranged in the supporting base, and a reciprocating driving assembly arranged on the supporting base and connected with the rotating supporting clamp. When the position angle of the crankshaft oil hole is detected, the position of the detection plug corresponding to the preliminary detection of the oil hole distribution direction on the crankshaft is aligned, then the multiple detection plugs are synchronously ejected into the corresponding oil holes, and during the detection, the left and right staggered extrusion balls act on the linkage ball, so that the rotating supporting cylinder of the supporting and preventing crankshaft reciprocating rotates within a certain angle range, so as to finely adjust the position between the oil hole on the crankshaft and the corresponding detection plug, avoid the overall position deviation of the placed crankshaft, and ensure that all the detection plugs can be inserted, so as to avoid the influence of the result judgment, and manual secondary position alignment adjustment is not needed.

Description

Technical Field

[0001] This invention relates to the field of crankshaft oil hole detection technology, specifically to a comprehensive inspection tool for detecting the position and angle of crankshaft oil holes. Background Technology

[0002] The crankshaft oil hole is designed to facilitate the introduction or extraction of engine oil to lubricate the journal surface, thereby reducing the crankshaft mass and the centrifugal force generated during operation. After the crankshaft is machined, the position of the corresponding oil hole needs to be checked to ensure that the oil hole is in the same position as the main oil passage in the cylinder head during crankshaft installation.

[0003] An existing crankshaft oil hole inspection fixture, authorized by publication number CN205860914U, includes a base plate. A mounting block and a first mounting plate are mounted on the upper surface of the base plate. The surface of the first mounting plate has a first mounting groove, and a second mounting plate is slidably connected inside the first mounting plate. The surface of the second mounting plate has a second mounting groove. By adding a sliding rod and a measuring head, pushing the sliding rod allows the measuring head to enter the crankshaft oil hole. If the measuring head can enter the crankshaft oil hole, the oil hole position meets the requirements. If one measuring head is not inserted, the oil hole position or diameter does not meet the requirements. This facilitates the inspection of the oil hole position and diameter, reducing the inspection time. The shortcomings of the existing crankshaft oil hole integrated inspection tool are as follows: When placing the crankshaft, the side where the oil hole is located is aligned with the position of the measuring head, but it cannot completely ensure that the measuring head and the oil hole are aligned. Thus, when the measuring head slides towards the crankshaft, it is very likely that the measuring head cannot be inserted due to the overall positional shift of the crankshaft during placement. This situation is not due to a problem with the position and angle of the oil hole, which can easily lead to misjudgment. Furthermore, when this situation occurs, the inspector needs to rotate the crankshaft again when the measuring head is close to it to make fine adjustments to the position and try to see if the measuring head can be inserted into the oil hole, which is not convenient. Summary of the Invention

[0004] In order to overcome the above-mentioned technical problems, the purpose of this invention is to provide a comprehensive inspection tool for detecting the position and angle of crankshaft oil holes.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A comprehensive inspection fixture for detecting the position and angle of crankshaft oil holes includes a support base. A connecting ring is connected to the top of the support base. A vertical bar is provided on the connecting ring, and multiple sliding rods are slidably inserted through the vertical bar. A first spring connects each sliding rod to the vertical bar. A detection plug is slidably provided at one end of each sliding rod. A linkage assembly that engages with the sliding rods is provided on the support base. A rotating support clamp is rotatably installed inside the support base. A reciprocating drive assembly that engages with the rotating support clamp is also provided on the support base. The reciprocating drive assembly includes a connecting guide rail, on which a U-shaped frame is slidably connected. Multiple extrusion balls are longitudinally and equidistantly distributed on both sides of the U-shaped frame, with their positions staggered. A linkage ball aligned with the U-shaped frame is provided on the rotating support clamp. A counterweight is fixedly connected to one side of the top of the U-shaped frame. A limit mechanism is provided at the top of the U-shaped frame.

[0007] As a further aspect of the present invention: the linkage assembly includes a telescopic connecting rod, which is connected to the bottom side of the support base. The telescopic end of the telescopic connecting rod is connected to a linkage frame. A third spring is connected between the linkage frame and the fixed end of the telescopic connecting rod. A linkage steel wire is connected to the sliding insert rod, and the end of the linkage steel wire is connected to the linkage frame. A connecting ball aligned with the sliding insert rod is connected to the vertical bar, and the linkage steel wire slides through the connecting ball.

[0008] As a further aspect of the present invention: the limiting mechanism includes a collar, the collar being connected to the top of the U-shaped frame, and a horizontal locking bolt that is slidably inserted into the top of the connecting guide rail and slidably engaged with the collar.

[0009] As a further embodiment of the present invention: the telescopic end of the telescopic connecting rod is horizontally fixedly connected to a pressing cross plate, and the end of the horizontal bolt away from the collar is movably connected to a linkage rod through a spring-loaded hinge. The linkage rod is longitudinally aligned with the pressing cross plate, and the end of the linkage rod slides in contact with the outer wall of the connecting guide rail.

[0010] As a further aspect of the present invention: the end of the linkage rod is a spherical end, and the outer wall of the spherical end is smooth.

[0011] As a further aspect of the present invention: a connecting groove is provided on the sliding rod, the detection plug is slidably inserted into the connecting groove, and a second spring is connected between the detection plug and the connecting groove.

[0012] As a further embodiment of the present invention: the rotating support clip includes a rotating support cylinder, the rotating support cylinder is rotatably connected to the support base, the linkage ball is connected to the rotating support cylinder, and an anti-slip rubber sleeve is fixedly connected to the inner wall of the rotating support cylinder.

[0013] As a further aspect of the present invention: the anti-slip rubber sleeves are distributed longitudinally in multiple portions, and the anti-slip rubber sleeves are funnel-shaped.

[0014] The beneficial effects of this invention are:

[0015] 1. When the crankshaft component is tested for the angle position of the oil hole, the distribution of the oil holes on the crankshaft component can be initially aligned with the position of the corresponding test plug. Then, multiple test plugs are simultaneously ejected and inserted into the corresponding oil holes. If all test plugs are inserted into the corresponding oil holes, it means that the relative angle position of each oil hole on the crankshaft component is qualified. During the test, the pressure balls distributed on the left and right sides act on the linkage ball, so that the rotating support cylinder that supports and prevents the crankshaft component from rotating back and forth within a certain angle range. This allows for fine adjustment of the position between the oil holes on the crankshaft component and the corresponding test plugs, avoiding the overall position of the crankshaft component being offset, which would cause all the test plugs to be unable to be inserted and affect the result judgment. At the same time, there is no need for manual secondary position alignment adjustment.

[0016] 2. In this invention, all the test plugs can move away from the crankshaft component by the synchronous movement of the linkage steel wire, facilitating the placement of the crankshaft component. At the same time, the linkage steel wire can be relaxed, and the first spring can be used to synchronously eject them into the corresponding oil holes on the crankshaft component, achieving synchronous testing without the need for individual insertion and testing, thus improving the overall testing efficiency. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure in which the sliding plug and the detection plug are connected in this invention;

[0020] Figure 3 yes Figure 1 Enlarged structural diagram at point A;

[0021] Figure 4 This is a left-view structural schematic diagram of the relative positional distribution of the extrusion ball and the linkage ball in this invention;

[0022] Figure 5 This is a schematic diagram of the anti-slip rubber sleeve in this invention.

[0023] In the diagram: 1. Support base; 2. Rotating support cylinder; 3. Anti-slip rubber sleeve; 4. Telescopic connecting rod; 5. Third spring; 6. Linkage frame; 7. Linkage steel wire; 8. Connecting ball; 9. Sliding insert rod; 10. First spring; 11. Vertical bar; 12. Detection plug; 13. Crankshaft component; 14. Second spring; 15. Connecting slide; 16. Connecting guide rail; 17. Linkage rod; 18. Horizontal bolt; 19. Collar; 20. Counterweight; 21. U-shaped frame; 22. Extrusion ball; 23. Linkage ball; 24. Extrusion cross plate; 25. Connecting ring. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] like Figures 1-5As shown, the comprehensive inspection fixture for detecting the position and angle of crankshaft oil holes includes a support base 1, which is box-shaped. A connecting ring 25 is fixedly connected to the top of the support base 1. Multiple vertical bars 11 are distributed circumferentially on the connecting ring 25. The number and position of the vertical bars 11 are distributed according to the position of the oil holes on the corresponding crankshaft component 13. Each oil hole on the same side corresponds to one vertical bar 11. Multiple sliding rods 9 are horizontally slidably inserted on each vertical bar 11. The number of sliding rods 9 on each vertical bar 11 is determined by the number of oil holes on the same side of the crankshaft component 13. The distance between two adjacent sliding rods 9 is the same as the distance between the corresponding adjacent oil holes. A first spring 10 connects the sliding rod 9 and the corresponding vertical bar 11. A detection plug 12 is slidably disposed at one end of each sliding rod 9 near the center of the support base 1. The sliding disposal here relies on a connecting groove 15 opened at the end of the sliding rod 9. The detection plug 12 is slidably inserted into the connecting groove 15. A second spring 14 is connected between the detection plug 12 and the connecting slide 15, so that when the detection plug 12 hits the crankshaft component 13, it can slide into the connecting slide 15 due to the impact force, and the second spring 14 buffers the impact force. The detection plug 12 is used to insert into the oil hole at the corresponding position of the crankshaft component 13. A rotating support clip for holding the crankshaft component 13 is rotatably connected in the support base 1. The rotating support clip includes a rotating support cylinder 2, which is rotatably connected in the support base 1. The inner diameter of the rotating support cylinder 2 matches the end size of the crankshaft component 13 to facilitate the insertion of the end of the crankshaft component 13. An anti-slip rubber sleeve 3 is fixedly connected to the inner wall of the rotating support cylinder 2. There are multiple anti-slip rubber sleeves 3 distributed longitudinally, and the anti-slip rubber sleeves 3 are funnel-shaped. When the end of the crankshaft component 13 is inserted into the rotating support cylinder 2, it is squeezed through the anti-slip rubber sleeve 3, and the crankshaft component 13 is fixedly held by the anti-slip rubber sleeve 3.The support base 1 is also equipped with a reciprocating drive assembly that connects to the rotating support clamp. The reciprocating drive assembly includes a connecting guide rail 16, on which a U-shaped frame 21 is slidably connected. Multiple extrusion balls 22 are longitudinally and equidistantly distributed on both sides of the U-shaped frame 21, with the positions of the extrusion balls 22 on both sides of the U-shaped frame 21 being staggered. The rotating support clamp is equipped with a linkage ball 23 aligned with the U-shaped frame 21. The linkage ball 23 is fixedly connected to the rotating support cylinder 2 of the rotating support clamp via a rod, meaning the linkage ball 23 can rotate together with the rotating support cylinder 2. It should be noted that the diameter of the linkage ball 23 is smaller than that of two longitudinally adjacent balls. The spacing between the extrusion balls 22 is such that the diameter of the linkage ball 23 is larger than the diameter of the extrusion balls 22. A counterweight 20 is fixedly connected to one side of the top of the U-shaped frame 21. The U-shaped frame 21 is lowered by the weight of the counterweight 20. Thus, when the crankshaft component 13 is inserted into the rotating support cylinder 2, and the oil holes on the crankshaft component 13 are initially aligned with the corresponding positions of the detection plugs 12 and oil holes according to their distribution, the corresponding detection plugs 12 are then moved laterally to insert into the corresponding oil holes. When one or more detection plugs 12 are not inserted, while the other detection plugs 12 are inserted, then... The position and angle of the oil hole on the crankshaft component 13 are problematic. When the crankshaft component 13 is placed, due to the positional deviation between the overall structure and the corresponding side detection plug 12, the U-shaped frame 21 slides down along the connecting guide rail 16 under the gravity of the counterweight 20. During the descent of the U-shaped frame 21, the compression balls 22, which are staggered on both sides, squeeze the linkage ball 23 from left to right in sequence. The linkage ball 23 reciprocates due to the compression balls 22 squeezing from different directions in sequence, thereby driving the rotating support cylinder 2 to rotate back and forth within a certain range. In this way, the crankshaft component 13 moves synchronously, so that the crankshaft component 13 can move synchronously. 3. Fine-tune the position of the relative detection plug 12 so that the adjustment positions of the multiple oil holes that are offset are aligned with the corresponding detection plug 12. When the detection plug 12 is not inserted into the corresponding oil hole, it abuts against the outer wall of the crankshaft component 13 and slides into the connecting groove 15 at the end of the sliding rod 9 due to compression, causing the second spring 14 to be compressed. In this way, when the oil hole and the corresponding detection plug 12 are finely aligned, the detection plug 12 is inserted into the oil hole to realize the detection. This can avoid the error in the overall position caused by the manual placement of the crankshaft component 13, which would prevent all detection plugs 12 from being inserted and affect the judgment of the detection results.

[0026] The top of the U-shaped frame 21 is provided with a limiting mechanism, which includes a collar 19. The collar 19 is fixedly connected to the top of the U-shaped frame 21. A horizontal bolt 18 that is slidably connected to the collar 19 is inserted into the top of the connecting guide rail 16. The horizontal bolt 18 is inserted into the collar 19, so that the U-shaped frame 21 is fixed at the top position of the connecting guide rail 16.

[0027] The support base 1 is equipped with a linkage assembly that connects to each sliding rod 9. The linkage assembly includes a telescopic connecting rod 4, which is vertically fixed to one side of the bottom of the support base 1. A linkage frame 6 is fixedly connected to the telescopic end of the telescopic connecting rod 4. A third spring 5 connects the linkage frame 6 and the fixed end of the telescopic connecting rod 4. Each sliding rod 9 is connected to a linkage wire 7. The ends of the linkage wires 7 on the same side converge and are connected to the corresponding positions on the linkage frame 6. Each vertical bar 11 has multiple connecting balls 8 longitudinally fixed to it, aligned with the corresponding sliding rod 9. The linkage wire 7 slides through the corresponding connecting ball 8. The connecting ball 8 ensures that the portion of the linkage wire 7 between itself and the corresponding sliding rod 9 is horizontal, facilitating the lateral sliding of the sliding rod 9 by the linkage wire 7. Thus, when it is necessary to make all positions... When the sliding rod 9 slides away from the center of the support base 1, the telescopic connecting rod 4 is pressed directly to retract it. As a result, the linkage frame 6 descends. During the descent, the linkage frame 6 pulls the linkage wires 7 at each position. Each linkage wire 7 is turned by the connecting ball 8 and then pulls the corresponding sliding rod 9 laterally. During this process, each first spring 10 is stretched to generate a rebound force. After the crankshaft component 13 is installed, the telescopic end of the telescopic connecting rod 4 is released. The telescopic connecting rod 4 is then ejected and raised under the rebound force of the third spring 5. Then the linkage frame 6 is also raised, causing all the linkage wires 7 to loosen. As a result, each sliding rod 9 slides and inserts into the position of the crankshaft component 13 by the rebound force of the corresponding first spring 10. This makes it easier for all the sliding rods 9 to drive the detection plug 12 to be inserted into the oil hole of the crankshaft component 13 to be tested simultaneously.

[0028] The telescopic connecting rod 4 is horizontally fixedly connected to a pressing plate 24 at its telescopic end. The bottom of the horizontal latch 18, away from the collar 19, is movably connected to a linkage rod 17 via a spring-loaded hinge. The linkage rod 17 is longitudinally aligned with the pressing plate 24, and the end of the linkage rod 17 slides in contact with the outer wall of the connecting guide rail 16. The end of the linkage rod 17 is a spherical end with a smooth outer wall. When the telescopic connecting rod 4 extends due to the third spring 5, the pressing plate 24 at the telescopic end of the telescopic connecting rod 4 rises accordingly. After the pressing plate 24 rises to the corresponding height, all sliding inserts... The detection plugs 12 at the ends of rod 9 all abut against the crankshaft component 13. At this time, the telescopic connecting rod 4 has not yet fully extended, that is, the compression plate 24 continues to rise. It should be noted that the detection plugs 12 are designed to have sufficient length to ensure that the above-mentioned movement can be achieved. The rising compression plate 24 then presses against the linkage rod 17. One end of the linkage rod 17 abuts against the outer wall of the connecting guide rail 16 and slides upward along the outer wall of the connecting guide rail 16. The other end pushes the horizontal locking bolt 18 to slide laterally away from the collar 19, which facilitates the linkage unlocking of the U-shaped frame 21 and enables it to fall.

[0029] The working principle of the present invention is as follows: First, press the telescopic connecting rod 4 to retract it, so that the linkage frame 6 will descend. During the descent, the linkage frame 6 pulls the linkage steel wires 7 at each position. Each linkage steel wire 7 is turned by the connecting ball 8 and then the corresponding sliding rod 9 is pulled laterally to slide laterally away from the center position of the support base 1. During this process, each first spring 10 is stretched to generate a rebound force.

[0030] Then, the end of the crankshaft component 13 is inserted into the rotating support cylinder 2, so that it is squeezed through the anti-slip rubber sleeve 3. The anti-slip rubber sleeve 3 fixes and holds the crankshaft component 13 in place. When placing it, the distribution angle of the oil holes on the crankshaft component 13 is initially aligned with the corresponding sliding rods 9. Then, the telescopic end of the telescopic connecting rod 4 is released. The telescopic connecting rod 4 is then ejected and raised under the action of the rebound force of the third spring 5. Then, the linkage frame 6 is also raised, so that all the linkage steel wires 7 are loosened. In this way, each sliding rod 9 slides and inserts into the position of the crankshaft component 13 by relying on the rebound force of the corresponding first spring 10. This makes it easy for all the sliding rods 9 to drive the detection plug 12 to be inserted into the oil hole of the crankshaft component 13 to be tested simultaneously.

[0031] During the extension of the telescopic connecting rod 4, the pressing horizontal plate 24 rises accordingly. When the pressing horizontal plate 24 rises to the corresponding height, the detection plugs 12 at the ends of all the sliding plugs 9 abut against the crankshaft component 13. At this time, the telescopic connecting rod 4 has not yet fully extended, that is, the pressing horizontal plate 24 continues to rise. The rising pressing horizontal plate 24 presses against the linkage rod 17. One end of the linkage rod 17 abuts against the outer wall of the connecting guide rail 16 and slides upward along the outer wall of the connecting guide rail 16. The other end pushes the horizontal locking bolt 18 to slide laterally away from the collar 19, which facilitates the linkage unlocking of the U-shaped frame 21.

[0032] After unlocking, the U-shaped frame 21 slides down along the connecting guide rail 16 under the gravity of the counterweight 20. During the descent of the U-shaped frame 21, the compression balls 22, which are staggered on both sides, squeeze the linkage ball 23 in turn. The linkage ball 23 reciprocates due to the compression balls 22 squeezing from different directions, thereby driving the rotating support cylinder 2 to rotate in a certain range. As a result, the crankshaft component 13 moves synchronously, so that the position of the crankshaft component 13 relative to the detection plug 12 can be finely adjusted, thereby adjusting the multiple oil holes that are offset as a whole. The position of the crankshaft component 13 is aligned with the corresponding test plug 12. When the test plug 12 is not inserted into the corresponding oil hole, it abuts against the outer wall of the crankshaft component 13 and slides into the connecting groove 15 at the end of the sliding rod 9 due to compression, causing the second spring 14 to be compressed. Thus, when the oil hole and the corresponding test plug 12 are finely aligned, the test plug 12 is inserted into the oil hole to realize the test. This can avoid the overall position error caused by manual placement of the crankshaft component 13, which may cause all test plugs 12 to fail to be inserted and affect the judgment of the test results.

[0033] If one or more detection plugs 12 are not inserted while the others are inserted, it indicates that there is a problem with the relative position angle of the oil holes at each section of the crankshaft component 13.

[0034] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A comprehensive inspection tool for detecting the position and angle of crankshaft oil holes, comprising a support base (1), a connecting ring (25) connected to the top of the support base (1), a vertical bar (11) provided on the connecting ring (25), a plurality of sliding rods (9) slidably inserted on the vertical bar (11), a first spring (10) connected between each sliding rod (9) and the vertical bar (11), a detection plug (12) slidably provided at one end of each sliding rod (9), a linkage component that cooperates with and connects to the sliding rods (9) provided on the support base (1), and a rotating support clamp rotatably provided inside the support base (1), characterized in that, The support base (1) is also provided with a reciprocating drive assembly that is connected to the rotating support bracket. The reciprocating drive assembly includes a connecting guide rail (16). A U-shaped frame (21) is slidably connected to the connecting guide rail (16). Multiple extrusion balls (22) are longitudinally and equidistantly distributed on both sides of the U-shaped frame (21). The extrusion balls (22) on both sides of the U-shaped frame (21) are staggered. A linkage ball (23) aligned with the U-shaped frame (21) is provided on the rotating support bracket. A counterweight block (20) is fixedly connected to one side of the top of the U-shaped frame (21). A limit mechanism is provided on the top of the U-shaped frame (21). The sliding rod (9) is provided with a connecting groove (15), the detection plug (12) is slidably inserted into the connecting groove (15), and a second spring (14) is connected between the detection plug (12) and the connecting groove (15); the rotating support clip includes a rotating support cylinder (2), the rotating support cylinder (2) is rotatably connected to the support base (1), and the linkage ball (23) is connected to the rotating support cylinder (2).

2. The comprehensive inspection fixture for detecting the position and angle of crankshaft oil holes according to claim 1, characterized in that, The linkage assembly includes a telescopic connecting rod (4), which is connected to the bottom side of the support base (1). The telescopic end of the telescopic connecting rod (4) is connected to a linkage frame (6). A third spring (5) is connected between the linkage frame (6) and the fixed end of the telescopic connecting rod (4). A linkage wire (7) is connected to the sliding insert rod (9). The end of the linkage wire (7) is connected to the linkage frame (6). A connecting ball (8) aligned with the sliding insert rod (9) is connected to the vertical bar (11). The linkage wire (7) slides through the connecting ball (8).

3. The comprehensive inspection fixture for detecting the position and angle of crankshaft oil holes according to claim 2, characterized in that, The limiting mechanism includes a collar (19), which is connected to the top of the U-shaped frame (21). The top of the connecting guide rail (16) is horizontally slidably inserted with a horizontal locking bolt (18) that is slidably connected to the collar (19).

4. The comprehensive inspection fixture for detecting the position and angle of crankshaft oil holes according to claim 3, characterized in that, The telescopic connecting rod (4) is horizontally fixedly connected to the compression plate (24). The end of the horizontal bolt (18) away from the collar (19) is movably connected to the linkage rod (17) through the spring hinge. The linkage rod (17) is longitudinally aligned with the compression plate (24), and the end of the linkage rod (17) slides in contact with the outer wall of the connecting guide rail (16).

5. The comprehensive inspection fixture for detecting the position and angle of crankshaft oil holes according to claim 4, characterized in that, The end of the linkage rod (17) is a spherical end, and the outer wall of the spherical end is smooth.

6. The comprehensive inspection fixture for detecting the position and angle of crankshaft oil holes according to claim 1, characterized in that, An anti-slip rubber sleeve (3) is fixedly connected to the inner wall of the rotating support cylinder (2).

7. The comprehensive inspection fixture for detecting the position and angle of crankshaft oil holes according to claim 6, characterized in that, The anti-slip rubber sleeve (3) is distributed longitudinally in multiple ways, and the anti-slip rubber sleeve (3) is funnel-shaped.

Images