Clamping device for longitudinal detection of automobile crankshaft

Abstract

The utility model discloses a clamping device for longitudinal detection of an automobile crankshaft in the field of crankshaft processing, which comprises a detection machine base, rack plates are assembled on two sides of the upper end of the detection machine base, a crankshaft detection frame is assembled at the upper ends of the rack plates, fixing plates are uniformly assembled at the upper end of the crankshaft detection frame from left to right, and sliding blocks are mounted on the side walls of the fixing plates. The side wall of the crankshaft detection frame is provided with a slide way, the side wall of the fixing plate is provided with a screw hole, a fastener is assembled in the screw hole, the lower end of the fastener is provided with a detection disc, the fastener comprises a fastening screw rod and an anti-falling screw rod, and the outside of the fastening screw rod is in threaded connection with a fastening nut; according to the detection machine for machining the automobile crankshaft, the phenomenon of tooth withdrawal caused by rotation of a nut structure is prevented, under meshing of a limiting column and a fastening screw, the anti-disengaging screw and the fastening screw are kept in a stable connection limiting state, the good tooth withdrawal prevention function is achieved, the connection strength is high, and the extremely high connection stability is achieved.

Description

Technical Field

[0001] This utility model relates to the field of crankshaft processing technology, specifically a clamping device for longitudinal inspection of automobile crankshafts. 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 centrifugal force from the rotating mass; the combined action of periodically changing gas inertial force and reciprocating inertial force causes the crankshaft to be subjected to bending and torsional loads. Therefore, the crankshaft is required to have sufficient strength and rigidity, wear-resistant journal surfaces, uniform operation, and good balance. In crankshaft machining, inspection is a crucial step that determines the service life of the crankshaft.

[0003] However, existing crankshaft testing machines still have some shortcomings. For example, the testing disc vibrates continuously, the anti-tooth-loosening effect of the bolt fastener structure is poor, and the nuts on the bolts will be continuously vibrated, causing tooth loosening. Long-term use can easily affect the life of the fasteners. Therefore, existing technologies need to be improved. Utility Model Content

[0004] The purpose of this utility model is to provide a clamping device for longitudinal inspection of automobile crankshafts, in order to solve the problems mentioned in the background art, such as the continuous vibration of the inspection disc, the poor anti-tooth removal effect of the bolt fastener structure, the continuous vibration of the nut on the bolt causing tooth removal, and the long-term use of the fasteners easily affecting their lifespan.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clamping device for longitudinal inspection of automotive crankshafts, comprising an inspection machine base, frame plates mounted on both sides of the upper end of the inspection machine base, a crankshaft inspection frame mounted on the upper end of the frame plates, and fixing plates evenly mounted from left to right on the upper end of the crankshaft inspection frame. A slider is installed on the side wall of the fixing plate, a slide rail is formed on the side wall of the crankshaft inspection frame, and a screw hole is formed on the side wall of the fixing plate. A fastener is installed in the screw hole, and an inspection disc is installed at the lower end of the fastener. The fastener includes a fastening screw and an anti-detachment screw. A fastening nut is screwed onto the outside of the fastening screw, and an anti-detachment groove is formed at the bottom end of the fastening screw. The anti-detachment screw is screwed into the anti-detachment groove, and an anti-detachment sleeve is sleeved on the outside of the anti-detachment screw. Three limiting posts are installed on the outer wall of the anti-detachment sleeve, the three limiting posts being triangularly distributed, and a spiral groove that mates with the fastening screw is formed on the inner wall of each limiting post.

[0006] Preferably, the inner wall of the anti-detachment cylinder is provided with a reverse internal thread, and the outer part of the anti-detachment screw that fits with the anti-detachment cylinder is provided with a reverse external thread, and the reverse internal thread and the reverse external thread cooperate with each other.

[0007] Preferably, a turntable is installed at the end of the anti-detachment screw, and a cross groove is formed on the outer wall of the turntable.

[0008] Preferably, the outer wall of the fastening nut is provided with an annular groove, and the end of the limiting post is disposed in the annular groove.

[0009] Preferably, a retaining ring is fixedly installed on the upper outer end of the fastening screw, and an annular pressure plate, a spring, and an annular rubber sheet are fitted on the circumferential surface of the fastening screw.

[0010] Preferably, the annular pressure plate is located above the fixed ring, the spring is located above the annular pressure plate, the annular rubber sheet is located below the fixed ring, and a compression block is fixedly installed at the lower edge of the annular pressure plate.

[0011] Preferably, an electric push rod is installed on the side wall of the frame plate, and a crankshaft clamp is installed at the end of the electric push rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The inspection machine for automobile crankshaft processing has a reasonable structural design. After tightening the fastening nut and fastening screw at the installation point of the inspection plate, an anti-loosening screw is embedded at the end of the fastening screw. Under the action of the anti-loosening sleeve, the fastening nut is circumferentially limited, preventing the nut structure from rotating and causing tooth slippage. Under the meshing of the limiting post and the fastening screw, the anti-loosening screw and the fastening screw are kept in a stable connection and limiting state, which has a good anti-tooth slippage function, high connection strength, and extremely high connection stability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the crankshaft testing frame of this utility model;

[0015] Figure 3 This is a schematic diagram of the fastener of this utility model;

[0016] Figure 4 This is a schematic diagram of the anti-detachment cylinder of this utility model;

[0017] Figure 5 This is a schematic diagram of the anti-detachment screw of this utility model.

[0018] In the diagram: 1. Testing machine base; 2. Frame plate; 3. Electric push rod; 4. Crankshaft chuck; 5. Crankshaft testing frame; 6. Fixing plate; 7. Slide rail; 8. Slider; 9. Screw hole; 10. Fastener; 11. Annular groove; 12. Fixing ring; 13. Extrusion block; 14. Annular pressure plate; 15. Annular rubber sheet; 16. Spring; 17. Fastening screw; 18. Fastening nut; 19. Anti-loosening screw groove; 20. Anti-loosening cylinder; 21. Limiting post; 22. Spiral groove; 23. Reverse internal thread; 24. Reverse external thread; 25. Turntable; 26. Anti-loosening screw. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This utility model provides a technical solution:

[0021] In this technical solution, a clamping device for longitudinal inspection of an automobile crankshaft includes an inspection machine base 1. A frame plate 2 is mounted on both sides of the upper end of the inspection machine base 1. A crankshaft inspection frame 5 is mounted on the upper end of the frame plate 2. Fixing plates 6 are evenly mounted from left to right on the upper end of the crankshaft inspection frame 5. A slider 8 is installed on the side wall of the fixing plate 6. A slide rail 7 is formed on the side wall of the crankshaft inspection frame 5. A screw hole 9 is formed on the side wall of the fixing plate 6. A fastener 10 is installed in the screw hole 9. A mounting bracket is installed at the lower end of the fastener 10. The detection plate and fastener 10 include a fastening screw 17 and an anti-loosening screw 26. A fastening nut 18 is screwed onto the outside of the fastening screw 17. An anti-loosening groove 19 is opened at the bottom end of the fastening screw 17. The anti-loosening screw 26 is screwed into the anti-loosening groove 19. An anti-loosening sleeve 20 is sleeved on the outside of the anti-loosening screw 26. Three limiting posts 21 are installed on the outer wall of the anti-loosening sleeve 20. The three limiting posts 21 are distributed in a triangle. The inner wall of each limiting post 21 is provided with a spiral groove 22 that cooperates with the fastening screw 17.

[0022] In this technical solution, the detection disc can be installed on the fixing plate 6 by fastener 10, thereby installing the fastener 10. The fastening screw 17 and the fastening nut 18 cooperate to realize the bolt in the prior art. An anti-loosening groove 19 is provided at the bottom end of the fastening screw 17, and the anti-loosening screw 26 is screwed in. Three limiting posts 21 installed on the anti-loosening cylinder 20 outside the anti-loosening screw 26 hold the fastening nut 18, thereby limiting the fastening nut 18 circumferentially. The spiral groove 22 on the limiting post 21 engages with the fastening screw 17, thereby limiting the anti-loosening cylinder 20 and the anti-loosening screw 26.

[0023] In some technical solutions, reference Figure 1-4 The inner wall of the anti-detachment cylinder 20 is provided with a reverse internal thread 23, and the outer part of the anti-detachment screw 26 that fits with the anti-detachment cylinder 20 is provided with a reverse external thread 24, and the reverse internal thread 23 and the reverse external thread 24 are matched.

[0024] In this technical solution, the external thread of the anti-detachment screw 26 is divided into two parts. The front part mates with the internal thread of the anti-detachment screw groove 19, and the rear part mates with the reverse internal thread 23 of the anti-detachment cylinder 20, thereby installing the anti-detachment cylinder 20 on the outside of the anti-detachment screw 26.

[0025] In some technical solutions, reference Figure 1-4 The end of the anti-detachment screw 26 is equipped with a turntable 25, and the outer wall of the turntable 25 is provided with a cross groove.

[0026] In this technical solution, the turntable 25 facilitates the rotation of the anti-loosening screw 26, and the cross groove 5 facilitates operation with a screwdriver.

[0027] In some technical solutions, reference Figure 1-4 The outer wall of the fastening nut 18 is provided with an annular groove 11, and the end of the limiting post 21 is set in the annular groove 11.

[0028] In this technical solution, when the anti-loosening screw 26 is screwed into the anti-loosening screw groove 19, the anti-loosening cylinder 20 will rotate accordingly. When the limiting post 21 contacts the fastening nut 18, it can rotate in the annular rotating groove 11 until it contacts the inner wall of the annular rotating groove 11, thereby holding the fastening nut 18 in place and performing circumferential limiting.

[0029] In some technical solutions, reference Figure 1-4 A retaining ring 12 is fixedly installed on the upper outer end of the fastening screw 17, and an annular pressure plate 14, a spring 16 and an annular rubber sheet 15 are fitted on the circumferential surface of the fastening screw 17.

[0030] In this technical solution, when the fastening screw 17 is rotated, the annular rubber sheet 15 slides upward due to the action of the screw hole. With further tightening, the annular rubber sheet 15 contacts the fixing ring 12. The annular rubber sheet 15 deforms due to the action of the fixing ring 12, sealing the screw hole. The spring 16 is located on the upper side of the annular pressure plate 14, causing the annular pressure plate 14 to be pressed downward due to the action of the spring 16. The compression block 13 is pressed downward due to the action of the annular pressure plate 14, causing the compression block 13 to further compress the edge of the annular rubber sheet 15, thereby improving the sealing effect. The annular pressure plate 14 is located on the upper side of the fixing ring 12, the spring 16 is located on the upper side of the annular pressure plate 14, and the annular rubber sheet 15 is located on the lower side of the fixing ring 12. The compression block 13 is fixedly installed at the lower edge of the annular pressure plate 14.

[0031] In some technical solutions, reference Figure 1-4 An electric push rod 3 is installed on the side wall of the frame plate 2, and a crankshaft chuck 4 is installed at the end of the electric push rod 3.

[0032] In this technical solution, the crankshaft to be processed is clamped and fixed by the crankshaft chuck 4.

[0033] Working principle: In use, first, insert the fastening screw 17 into the mounting hole 3, then into the screw hole 9, and then screw the fastening nut 18 onto the screw 6. Next, install the anti-detachment sleeve 20 onto the anti-detachment screw 26, and then screw the anti-detachment screw 26 into the anti-detachment screw groove 19. At the same time as screwing, the spiral groove 22 on the limiting post 21 will engage with the external thread of the fastening screw 17 until the end of the limiting post 21 is placed in the annular groove 11 on the fastening nut 18, thus limiting the fastening nut 18. Then, fix the detection plate.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0035] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A clamping device for longitudinal inspection of automobile crankshafts, comprising an inspection machine base (1), characterized in that: The upper sides of the base (1) of the testing machine are equipped with frame plates (2). The upper end of the frame plate (2) is equipped with a crankshaft testing frame (5). The upper end of the crankshaft testing frame (5) is evenly equipped with fixing plates (6) from left to right. The side wall of the fixing plate (6) is equipped with a slider (8). The side wall of the crankshaft testing frame (5) is provided with a slide rail (7). The side wall of the fixing plate (6) is provided with a screw hole (9). The screw hole (9) is equipped with a fastener (10). The lower end of the fastener (10) is equipped with a testing disc. The fastener (10) includes a fastening screw. (17) and anti-detachment screw (26), the fastening screw (17) is screwed with a fastening nut (18), the bottom end of the fastening screw (17) is provided with an anti-detachment groove (19), the anti-detachment screw (26) is screwed in the anti-detachment groove (19), the anti-detachment screw (26) is sleeved with an anti-detachment sleeve (20), the outer wall of the anti-detachment sleeve (20) is equipped with three limiting posts (21), the three limiting posts (21) are distributed in a triangle, and the inner wall of each limiting post (21) is provided with a spiral groove (22) that cooperates with the fastening screw (17).

2. The clamping device for longitudinal inspection of automobile crankshafts according to claim 1, characterized in that: The inner wall of the anti-detachment cylinder (20) is provided with a reverse internal thread (23), and the outer part of the anti-detachment screw (26) is provided with a reverse external thread (24) at the contact point with the anti-detachment cylinder (20), and the reverse internal thread (23) and the reverse external thread (24) are matched.

3. The clamping device for longitudinal inspection of automobile crankshaft according to claim 2, characterized in that: The end of the anti-detachment screw (26) is equipped with a turntable (25), and the outer wall of the turntable (25) is provided with a cross groove.

4. The clamping device for longitudinal inspection of automobile crankshaft according to claim 1, characterized in that: The outer wall of the fastening nut (18) is provided with an annular groove (11), and the end of the limiting post (21) is located in the annular groove (11).

5. The clamping device for longitudinal inspection of automobile crankshaft according to claim 1, characterized in that: A retaining ring (12) is fixedly installed on the upper outer end of the fastening screw (17), and an annular pressure plate (14), a spring (16) and an annular rubber sheet (15) are fitted on the circumferential surface of the fastening screw (17).

6. The clamping device for longitudinal inspection of an automobile crankshaft according to claim 5, characterized in that: The annular pressure plate (14) is located on the upper side of the fixed ring (12), the spring (16) is located on the upper side of the annular pressure plate (14), the annular rubber sheet (15) is located on the lower side of the fixed ring (12), and a compression block (13) is fixedly installed at the lower edge of the annular pressure plate (14).

7. The clamping device for longitudinal inspection of automobile crankshafts according to claim 1, characterized in that: An electric push rod (3) is installed on the side wall of the frame plate (2), and a crankshaft chuck (4) is installed at the end of the electric push rod (3).

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