Crankshaft crack detection tool

Abstract

The utility model relates to the technical field of crankshaft detection, and discloses a crankshaft crack detection tool which comprises a workbench, the top of the workbench is sleeved with two sets of positioning frames, the inner bottom wall of each positioning frame is fixedly connected with a telescopic air cylinder, the top of each telescopic air cylinder is fixedly connected with a pushing frame, and the pushing frame is fixedly connected with a sliding block. A pushing frame is fixedly connected to the top of the workbench, clamping assemblies are rotationally connected to the two ends of the pushing frame, four sets of positioning blocks are fixedly connected to the top of the workbench, pushing assemblies are rotationally connected to the interiors of the two sets of positioning blocks, supporting plates are in threaded connection to the surfaces of the pushing assemblies, and fixing sleeves are fixedly connected to the middles of the supporting plates. According to the crankshaft crack detection tool, through the arrangement of the clamping assembly, the telescopic air cylinder and the pushing frame, the effect of rapidly clamping a crankshaft is achieved, the preparation time of crankshaft crack detection can be remarkably shortened, the overall detection efficiency is improved, and meanwhile it is ensured that the crankshaft cannot move in the detection process and is kept stable.

Description

Technical Field

[0001] This utility model relates to the field of crankshaft testing technology, and in particular to a crankshaft crack detection fixture. Background Technology

[0002] A crankshaft crack detection fixture is a tool specifically designed to detect cracks, fatigue damage, or other defects in a crankshaft. The crankshaft is a crucial component of an internal combustion engine, its primary function being to convert the linear motion of the piston into rotational motion. During long-term use, the crankshaft may develop cracks due to uneven forces, fatigue, and other factors. Therefore, crack detection of the crankshaft is of paramount importance to ensure the safety and reliability of the engine.

[0003] In practical use, existing crankshaft crack detection fixtures are not convenient for recycling fluorescent magnetic powder solution, making it difficult to reduce the consumption of magnetic powder solution.

[0004] A search of existing patents revealed a crankshaft inspection fixture (publication number: CN217132560U), comprising an operating platform with a mounting groove at its top, and an omnidirectional adjustment mechanism installed inside the mounting groove. The omnidirectional adjustment mechanism includes a bidirectional transmission screw disposed within the mounting groove, a first connecting screw ring block on the outer wall of the bidirectional transmission screw, and a second connecting screw ring block installed on one side of the first connecting screw ring block. This invention, by setting an omnidirectional adjustment mechanism, allows the positioning disc to drive the crankshaft to rotate, and the crankshaft to drive the positioning ring, causing the support shaft to rotate on the first linkage support plate. This allows for rapid limiting and fixing of crankshafts of different lengths, enabling rotation at multiple angles and achieving full-range inspection during testing. This not only improves the applicability of the equipment but also enhances the inspection effect.

[0005] While the aforementioned patent enables rapid positioning and fixation of crankshafts of different lengths, followed by rotation at multiple angles, and allows for full-range detection during testing, thus improving the applicability of the equipment and enhancing the detection results, it is not convenient for quickly clamping the crankshaft and thus makes it difficult to improve the overall detection efficiency.

[0006] Therefore, it is necessary to invent a crankshaft crack detection fixture to solve the above problems. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] The purpose of this invention is to provide a crankshaft crack detection fixture to solve the problem mentioned in the background art that it is inconvenient to quickly clamp the crankshaft and it is difficult to improve the overall detection efficiency.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, this utility model provides the following technical solution: a crankshaft crack detection fixture, comprising a worktable, two sets of positioning frames fitted onto the top of the worktable, telescopic cylinders fixedly connected to the inner bottom walls of the positioning frames, a pusher frame fixedly connected to the top of the telescopic cylinders, clamping assemblies rotatably connected to both ends of the pusher frame, four sets of positioning blocks fixedly connected to the top of the worktable, two sets of positioning blocks having pusher assemblies rotatably connected inside, a support plate threadedly connected to the surface of the pusher assembly, and a fixing sleeve fixedly connected to the middle of the support plate. The cylinder has a conveying assembly inside. The clamping assembly includes clamping rods rotatably connected to both ends of the pusher frame. A sliding frame is slidably connected inside the clamping rods. An arc-shaped clamping piece is fixedly connected to one side of the top of the clamping rods. The pusher assembly includes a threaded rod rotatably connected to the inside of the positioning block. A drive motor is fixedly connected to one end of the threaded rod. A motor housing is fitted onto the surface of the drive motor. The conveying assembly includes a water ring fitted inside the fixed sleeve. A connecting pipe is connected through the top of the water ring. A conveying pump is fixedly connected to one end of the connecting pipe. A collection box is connected through the input end of the conveying pump.

[0011] As a further embodiment of this utility model, the other two sets of positioning blocks are fitted with sliding rods inside, and the support plate is slidably connected to the surface of the sliding rods, which facilitates the translation of the support plate.

[0012] As a further embodiment of this utility model, a gathering hopper is fixedly connected to the center of the workbench, and a coarse filter screen is fixedly connected to the top of the gathering hopper. The coarse filter screen facilitates the filtration of large particulate impurities.

[0013] As a further embodiment of this utility model, the clamping rod has a sliding groove inside that is adapted to the sliding frame, and a support frame is fixedly connected to the bottom of the worktable, which facilitates the support of the worktable.

[0014] As a further embodiment of this utility model, threaded holes are provided on the inner wall of the positioning frame and one side of the sliding frame, and threaded bolts pass through the inside of the threaded holes, which facilitates the connection between the positioning frame and the sliding frame.

[0015] As a further embodiment of this utility model, the inner wall of the water ring is provided with several sets of nozzles, and a fine filter screen is fixedly connected to the top of the collection box, which facilitates further filtration of impurities.

[0016] As a further embodiment of this utility model, mounting plates are fixedly connected to both sides of the support frame, and mounting holes are provided on the surface of the mounting plates to facilitate the installation and positioning of the equipment.

[0017] (III) Beneficial Effects

[0018] This utility model provides a crankshaft crack detection fixture, which has the following beneficial effects:

[0019] 1. This crankshaft crack detection fixture, through the arrangement of clamping components, telescopic cylinders, and a pusher frame, allows for easy operation. The crankshaft is placed between two sets of arc-shaped clamping plates, and the telescopic cylinder is activated, causing the pusher frame to descend. The pusher frame then moves the clamping rod downwards. Since the sliding frame is fixed to the inner wall of the positioning frame, it slides within the groove of the clamping rod, causing the clamping rod to rotate at both ends of the pusher frame, making the clamping rod vertical. The arc-shaped clamping plates on the clamping rod hold both ends of the crankshaft, achieving rapid clamping of the crankshaft. This significantly shortens the preparation time for crankshaft crack detection, improves overall detection efficiency, and ensures that the crankshaft remains stable and does not move during the detection process.

[0020] 2. This crankshaft crack detection fixture, through the setup of the push and conveying components, utilizes a conveying pump to extract fluorescent magnetic powder liquid from the collection tank, transport it through a connecting pipe to the inside of the water ring, and spray it out from the nozzle. Simultaneously, the drive motor is activated, driving the threaded rod to rotate. The rotation of the threaded rod causes the support plate to move horizontally, which in turn causes the fixed sleeve and water ring to move horizontally, thereby evenly spraying the fluorescent magnetic powder liquid onto the crankshaft surface. Excess fluorescent magnetic powder liquid falls into the collection hopper, is filtered through a fine filter, and returns to the collection tank, thus achieving the effect of recycling the fluorescent magnetic powder liquid, reducing the consumption of magnetic powder liquid, thereby reducing detection costs and environmental pollution. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the driving component of this utility model;

[0024] Figure 4 This is a schematic diagram of the clamping assembly, telescopic cylinder, and push frame structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the conveying component structure of this utility model.

[0026] In the diagram: 1. Workbench; 2. Positioning frame; 3. Telescopic cylinder; 4. Pushing frame; 5. Clamping assembly; 501. Clamping rod; 502. Sliding frame; 503. Arc-shaped clamping piece; 6. Positioning block; 7. Pushing assembly; 701. Threaded rod; 702. Drive motor; 703. Motor housing; 8. Support plate; 9. Fixing sleeve; 10. Conveying assembly; 1001. Water ring; 1002. Connecting pipe; 1003. Conveying pump; 1004. Collection box; 11. Sliding rod; 12. Aggregating hopper; 13. Coarse filter screen; 14. Support frame; 15. Threaded bolt; 16. Fine filter screen; 17. Mounting piece. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] Please see Figures 1 to 5 This utility model provides a technical solution: a crankshaft crack detection fixture, including a worktable 1. Two sets of positioning frames 2 are sleeved on the top of the worktable 1. Telescopic cylinders 3 are fixedly connected to the inner bottom wall of the positioning frames 2. A pusher frame 4 is fixedly connected to the top of the telescopic cylinders 3. Clamping components 5 are rotatably connected to both ends of the pusher frame 4. Through the arrangement of the clamping components 5, telescopic cylinders 3, and pusher frame 4, the crankshaft can be quickly clamped, significantly shortening the preparation time for crankshaft crack detection and improving overall detection efficiency. Simultaneously, it ensures that the crankshaft does not move during the detection process and remains stable. Four sets of positioning blocks 6 are fixedly connected to the top of the worktable 1, with two sets of positioning blocks 6 rotatably connected to pusher components 7. Through the arrangement of pusher components 7 and conveying components 10, the fluorescent magnetic powder liquid can be recycled, reducing the consumption of magnetic powder liquid and thus lowering the detection cost. It also reduces the impact on... To address environmental pollution, the surface of the pushing component 7 is threadedly connected to a support plate 8, and a fixed sleeve 9 is fixedly connected to the middle of the support plate 8. A conveying component 10 is fitted inside the fixed sleeve 9. The clamping component 5 includes clamping rods 501 rotatably connected to both ends of the pushing frame 4. A sliding frame 502 is slidably connected inside the clamping rods 501, and an arc-shaped clamping piece 503 is fixedly connected to one side of the top of the clamping rods 501. The pushing component 7 includes a threaded rod 701 rotatably connected to the inside of the positioning block 6. A drive motor 702 is fixedly connected to one end of the threaded rod 701, and a motor housing 703 is fitted onto the surface of the drive motor 702. The conveying component 10 includes a water ring 1001 fitted inside the fixed sleeve 9. A connecting pipe 1002 is connected through the top of the water ring 1001, and a conveying pump 1003 is fixedly connected to one end of the connecting pipe 1002. A collection box 1004 is connected through the input end of the conveying pump 1003.

[0029] The other two sets of positioning blocks 6 have sliding rods 11 inside, and the support plate 8 is slidably connected to the surface of the sliding rods 11. The sliding rods 11 facilitate the translation of the support plate 8.

[0030] A collection hopper 12 is fixedly connected to the center of the workbench 1, and a coarse filter screen 13 is fixedly connected to the top of the collection hopper 12. The coarse filter screen 13 is used to filter large particles of impurities.

[0031] The clamping rod 501 has a sliding groove inside that matches the sliding frame 502. The bottom of the worktable 1 is fixedly connected to the support frame 14, which serves to support the worktable 1.

[0032] Threaded holes are provided on the inner wall of the positioning frame 2 and one side of the sliding frame 502. Threaded bolts 15 pass through the inside of the threaded holes. The threaded bolts 15 serve to connect the positioning frame 2 and the sliding frame 502.

[0033] The inner wall of the water ring 1001 is equipped with several sets of nozzles, and a fine filter screen 16 is fixedly connected to the top of the collection box 1004. The fine filter screen 16 further filters impurities.

[0034] Mounting plates 17 are fixedly connected to both sides of the support frame 14. Mounting plates 17 have mounting holes on their surfaces, which serve to install and position the equipment.

[0035] In this invention, the working steps of the device are as follows:

[0036] First step: When in use, place the crankshaft between the two sets of arc-shaped clamping plates 503, and then activate the telescopic cylinder 3, which drives the push frame 4 to move downward. The push frame 4 drives the clamping rod 501 to move downward. Since the sliding frame 502 is fixed on the inner wall of the positioning frame 2 and does not move, the sliding frame 502 slides in the groove of the clamping rod 501, which in turn drives the clamping rod 501 to rotate at both ends of the push frame 4, making the clamping rod 501 vertical. The arc-shaped clamping plates 503 on the clamping rod 501 clamp the two ends of the crankshaft.

[0037] Second step: When in use, the fluorescent magnetic powder liquid in the collection box 1004 is extracted by the delivery pump 1003, and transported to the water ring 1001 through the connecting pipe 1002 and sprayed out from the nozzle. At the same time, the drive motor 702 is started to drive the threaded rod 701 to rotate. The rotation of the threaded rod 701 drives the support plate 8 to move horizontally.

[0038] The third step involves the support plate 8 moving the fixed sleeve 9 and the water ring 1001 horizontally, thereby evenly spraying the fluorescent magnetic powder liquid onto the crankshaft surface. Excess fluorescent magnetic powder liquid falls into the collecting hopper 12, is filtered through the fine filter screen 16, and returns to the collection box 1004. It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. The technical details of the device's power mechanism, power supply system, and control system are not fully described. However, those skilled in the art, understanding the principle of the above utility model, can clearly understand the specifics of its power mechanism, power supply system, and control system. The control method described in the application document is automatic control via a controller, and the controller's control circuit can be implemented through simple programming by those skilled in the art.

[0039] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crankshaft crack detection fixture, comprising a worktable (1), characterized in that: Two sets of positioning frames (2) are fitted onto the top of the workbench (1). A telescopic cylinder (3) is fixedly connected to the inner bottom wall of the positioning frame (2). A pusher frame (4) is fixedly connected to the top of the telescopic cylinder (3). Clamping components (5) are rotatably connected to both ends of the pusher frame (4). Four sets of positioning blocks (6) are fixedly connected to the top of the workbench (1). Pushing components (7) are rotatably connected to the interior of two sets of positioning blocks (6). A support plate (8) is threaded onto the surface of the pusher component (7). A fixing sleeve (9) is fixedly connected to the middle of the support plate (8). A conveying component (10) is fitted inside the fixing sleeve (9). The clamping assembly (5) includes a clamping rod (501) rotatably connected to both ends of the push frame (4), a sliding frame (502) is slidably connected inside the clamping rod (501), and an arc-shaped clamping piece (503) is fixedly connected to one side of the top of the clamping rod (501). The pushing component (7) includes a threaded rod (701) rotatably connected inside the positioning block (6), one end of which is fixedly connected to a drive motor (702), and a motor housing (703) is sleeved on the surface of the drive motor (702). The conveying assembly (10) includes a water ring (1001) fitted inside a fixed sleeve (9), a connecting pipe (1002) being connected through the top of the water ring (1001), a conveying pump (1003) being fixedly connected to one end of the connecting pipe (1002), and a collection box (1004) being connected through the input end of the conveying pump (1003).

2. The crankshaft crack detection fixture according to claim 1, characterized in that: The other two sets of positioning blocks (6) are fitted with sliding rods (11), and the support plate (8) is slidably connected to the surface of the sliding rods (11).

3. The crankshaft crack detection fixture according to claim 1, characterized in that: A gathering hopper (12) is fixedly connected to the center of the workbench (1), and a coarse filter screen (13) is fixedly connected to the top of the gathering hopper (12).

4. The crankshaft crack detection fixture according to claim 1, characterized in that: The clamping rod (501) has a sliding groove inside that is compatible with the sliding frame (502), and the bottom of the workbench (1) is fixedly connected to a support frame (14).

5. The crankshaft crack detection fixture according to claim 1, characterized in that: The inner wall of the positioning frame (2) and one side of the sliding frame (502) are provided with threaded holes, and a threaded bolt (15) passes through the inside of the threaded hole.

6. The crankshaft crack detection fixture according to claim 1, characterized in that: The inner wall of the water ring (1001) is provided with several sets of nozzles, and a fine filter screen (16) is fixedly connected to the top of the collection box (1004).

7. The crankshaft crack detection fixture according to claim 4, characterized in that: Mounting plates (17) are fixedly connected to both sides of the support frame (14), and mounting holes are provided on the surface of the mounting plates (17).

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