Crankshaft flaw detection device

Abstract

The utility model relates to the technical field of crankshaft detection equipment, in particular to a crankshaft flaw detection device which comprises an equipment box, a supporting frame is fixedly installed at the left end of the top of the equipment box, and a rotating motor is fixedly installed at the top end of the left side of the supporting frame. A positioning disc is fixedly mounted at the output end of the rotating motor and located on the right side of the supporting frame, a displacement assembly is fixedly mounted at the right end of the top of the equipment box, a moving frame is fixedly mounted at the top end of the displacement assembly, and magnetizing rings are fixedly mounted on the opposite sides of the supporting frame and the moving frame correspondingly; compared with an existing crankshaft flaw detection device, the crankshaft flaw detection device has the advantages that the positioning effect of the crankshaft flaw detection device on a crankshaft can be improved through the design, and the crankshaft flaw detection device is simple in structure, convenient to use and high in practicability. And collision damage caused by deviation of the crankshaft positioning center in the detection process can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft detection equipment, in particular to a crankshaft flaw detection device. Background Art

[0002] The crankshaft is the most important component in the engine. It bears the force transmitted from the connecting rod and converts it into torque, which is output through the crankshaft and drives other accessories on the engine. The crankshaft is subjected to the combined effects of the centrifugal force of the rotating mass, the periodically changing gas inertia force and the reciprocating inertia force, which makes the crankshaft subject to bending and torsional loads. Since the working load borne by the crankshaft is huge and the alternation is complex, such parts must be inspected for defects such as scratches and cracks after final completion.

[0003] After searching, publication number CN218601217U discloses a crankshaft flaw detection device, which includes an equipment box, a protective side plate fixedly connected to the side of the upper end of the equipment box, a first clamping seat provided on the left side of the upper end of the equipment box, and a second clamping seat provided on the right side of the upper end of the equipment box. The first clamping seat and the second clamping seat are both movably connected to the equipment box via a displacement assembly. A magnetizing ring is provided on the right side of the first clamping seat, and the same magnetizing ring is provided on the left side of the second clamping seat. A positioning plate is provided on the inner side of the magnetizing ring.

[0004] The positioning plate of the above-mentioned device clamps the two ends of the crankshaft to increase the contact area with the crankshaft, thereby solving the problem of limited contact area caused by the existing crankshaft flaw detection device that the end head contacts the two ends of the crankshaft to achieve contact fixation. However, in actual operation, the positioning plate and the crankshaft only increase the end face contact area. During the rotational flaw detection process of the crankshaft, the positioning center of the positioning plate and the crankshaft shifts with the rotation. Even if there is a supporting roller underneath, the change in the positioning center will cause impact damage to the crankshaft.

[0005] Therefore, it is particularly important to design a crankshaft flaw detection device to solve the above-mentioned defects. Utility Model Content

[0006] In response to the shortcomings of the existing technology, the utility model designs a crankshaft flaw detection device, which aims to solve the technical problem of the crankshaft flaw detection device in the existing technology. During the rotation flaw detection process of the crankshaft, the positioning center of the positioning plate and the crankshaft is offset as the crankshaft rotates. Even if there is a supporting roller underneath, the crankshaft will be damaged by impact due to the change of the positioning center.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A crankshaft flaw detection device comprises an equipment box, a support frame is fixedly mounted on the left end of the top of the equipment box, a rotating motor is fixedly mounted on the top of the left side of the support frame, a positioning plate is fixedly mounted on the output end of the rotating motor and on the right side of the support frame, a displacement assembly is fixedly mounted on the right end of the top of the equipment box, a mobile frame is fixedly mounted on the top of the displacement assembly, a magnetizing ring is fixedly mounted on the side opposite to the mobile frame, a positioning assembly is rotatably connected to the top of the left side of the mobile frame, and a supporting assembly is fixedly mounted on the top of the equipment box and between the support frame and the mobile frame;

[0009] The positioning assembly includes a connecting frame rotatably connected to the top left side of the mobile frame, a telescopic rod is slidably connected to the inner side of the connecting frame, an abutment plate is fixedly installed on the left end of the telescopic rod, and multiple groups of positioning clamps are rotatably connected to the left side of the connecting frame and located outside the abutment plate.

[0010] As a preferred solution of the present invention, the right side of the connecting frame is rotatably connected to the mobile frame through a rotating seat, the right end of the telescopic rod is fixedly connected to a rubber buffer block, the front end of the telescopic rod is fixedly connected to a connecting head, and a spring is provided on the outside of the telescopic rod and between the connecting head and the connecting frame.

[0011] As a preferred solution of the present invention, the abutment plate is fixedly connected to the connector by means of mounting screws, and a plurality of through slots adapted for use with the positioning jaws are provided inside the abutment plate.

[0012] As a preferred solution of the present invention, the plurality of groups of positioning jaws are rotatably connected to the connecting head through a transmission arm, and the left ends of the plurality of groups of positioning jaws are sleeved with a rubber sleeve.

[0013] As a preferred solution of the present invention, the supporting assembly includes a lifting frame fixedly installed between the supporting frame and the movable frame, and hydraulic cylinders are fixedly installed at the four corners of the bottom of the lifting frame. The front end of the top of the lifting frame is slidably connected to the first supporting frame, and the rear end of the top of the lifting frame is slidably connected to the second supporting frame. The top ends of the first supporting frame and the second supporting frame are rotatably connected to two sets of rollers.

[0014] As a preferred solution of the present invention, the left end of the lifting frame is internally rotatably connected to a bidirectional threaded rod, the bottoms of the first and second supporting racks are threadedly connected to the bidirectional threaded rod through a connecting seat, and the front end of the bidirectional threaded rod is fixedly connected to a crank.

[0015] As a preferred solution of the present invention, a sliding rod is fixedly connected to the inside of the right end of the lifting frame, and the bottoms of the first supporting rack and the second supporting rack are slidably connected to the sliding rod through a sliding seat.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] In the present invention, through the design of the positioning assembly, when positioning the crankshaft, the crankshaft is placed on the supporting assembly for support and its left end is in contact with the positioning plate, and then the movable frame is moved by the displacement assembly until the abutment plate abuts the right end of the crankshaft. As the movable frame continues to move, the abutment plate will move to the right, and the telescopic rod will slide to the right with the movement of the abutment plate until the rubber buffer block abuts the inner side of the connecting frame, thereby positioning the two ends of the crankshaft through the abutment plate and the positioning plate. When the abutment plate moves to the right, the transmission arm will drive multiple sets of positioning claws to gather together, and the positioning claws will move toward the inner side of the through groove until the multiple sets of positioning claws synchronously clamp and fix the outer side of the crankshaft. While using multiple sets of positioning claws to assist in positioning the crankshaft, it can also prevent its positioning center from being offset and causing impact damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the positioning component structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the connector structure of the utility model;

[0021] Figure 4 This is a schematic structural diagram of the support assembly of the utility model.

[0022] In the figure: 1. Equipment box; 2. Support frame; 3. Rotating motor; 4. Positioning plate; 5. Displacement assembly; 6. Moving frame; 7. Magnetizing ring; 8. Positioning assembly; 801. Connecting frame; 802. Telescopic rod; 803. Abutment plate; 804. Positioning clamp; 805. Rotating seat; 806. Rubber buffer block; 807. Connecting head; 808. Spring; 809. Mounting screw; 810. Through slot; 811. Transmission arm; 812. Rubber sleeve; 9. Support assembly; 901. Lifting frame; 902. Hydraulic cylinder; 903. First support frame; 904. Second support frame; 905. Roller; 906. Bidirectional threaded rod; 907. Connecting seat; 908. Crank handle; 909. Sliding rod; 910. Sliding seat. DETAILED DESCRIPTION

[0023] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] Example:

[0025] See also Figures 1-4 , the utility model provides a technical solution:

[0026] A crankshaft flaw detection device includes an equipment box 1, a support frame 2 is fixedly installed on the left end of the top of the equipment box 1, a rotating motor 3 is fixedly installed on the top of the left side of the support frame 2, a positioning plate 4 is fixedly installed on the output end of the rotating motor 3 and on the right side of the support frame 2, a displacement component 5 is fixedly installed on the right end of the top of the equipment box 1, a mobile frame 6 is fixedly installed on the top of the displacement component 5, a magnetizing ring 7 is fixedly installed on the side opposite to the support frame 2 and the mobile frame 6, a positioning component 8 is rotatably connected to the top of the left side of the mobile frame 6, and a supporting component 9 is fixedly installed on the top of the equipment box 1 and between the support frame 2 and the mobile frame 6.

[0027] First, the positioning assembly 8 includes a connecting frame 801 that is rotatably connected to the top left side of the mobile frame 6, a telescopic rod 802 is slidably connected to the inner side of the connecting frame 801, and a contact plate 803 is fixedly installed on the left end of the telescopic rod 802. A plurality of positioning claws 804 are rotatably connected to the left side of the connecting frame 801 and located on the outside of the contact plate 803. The right side of the connecting frame 801 is rotatably connected to the mobile frame 6 through a rotating seat 805. The right end of the telescopic rod 802 is fixedly connected to a rubber buffer block 806, and the front end of the telescopic rod 802 is fixedly connected to a connector 807. The outside of the telescopic rod 802 and located on the connecting frame A spring 808 is provided between the joint 807 and the connecting frame 801. When positioning the crankshaft, the crankshaft is placed on the support assembly 9 for support and its left end is in contact with the positioning plate 4. The movable frame 6 is then moved by the displacement assembly 5 until the abutment plate 803 abuts the right end of the crankshaft. As the movable frame 6 continues to move, the abutment plate 803 moves to the right, and the telescopic rod 802 slides to the right with the movement of the abutment plate 803 until the rubber buffer block 806 abuts the inner side of the connecting frame 801, thereby positioning the two ends of the crankshaft through the abutment plate 803 and the positioning plate 4.

[0028] Then, the abutment plate 803 is fixedly connected to the connecting head 807 by installing screws 809. The interior of the abutment plate 803 is provided with multiple groups of through grooves 810 that are compatible with the positioning clamps 804. The abutment plate 803 is installed on the connecting head 807 by installing screws 809 for easy disassembly and assembly. The multiple groups of positioning clamps 804 are rotatably connected to the connecting head 807 through transmission arms 811. The left ends of the multiple groups of positioning clamps 804 are each provided with rubber sleeves 812. When the abutment plate 803 moves to the right, the multiple groups of positioning clamps 804 will be driven to gather under the transmission of the transmission arm 811, and the positioning clamps 804 will move toward the inside of the through grooves 810 until the multiple groups of positioning clamps 804 synchronously clamp and fix the outer side of the crankshaft. Under the protection of the rubber sleeves 812, wear on the outer side of the crankshaft can be avoided. While using the multiple groups of positioning clamps 804 to assist in positioning the crankshaft, it can also avoid its positioning center from being offset and causing impact damage.

[0029] Secondly, the supporting assembly 9 includes a lifting frame 901 fixedly installed between the support frame 2 and the movable frame 6, and hydraulic cylinders 902 are fixedly installed at the four corners of the bottom of the lifting frame 901. The front end of the top of the lifting frame 901 is slidably connected to the first supporting frame 903, and the rear end of the top of the lifting frame 901 is slidably connected to the second supporting frame 904. The tops of the first supporting frame 903 and the second supporting frame 904 are rotatably connected to two sets of rollers 905. When positioning the crankshaft, the hydraulic cylinder 902 is first started according to the size of the crankshaft to adjust the height of the lifting frame 901 so that the two ends of the crankshaft can contact the positioning plate 4 and the abutment plate 803 respectively after it is placed. The crankshaft is placed on the first supporting frame 903 and the second supporting frame 904. During the crankshaft detection process, the rollers 905 are used to assist in supporting the rotation.

[0030] Finally, the left end of the lifting frame 901 is internally connected to a two-way threaded rod 906 for rotation, and the bottom of the first supporting frame 903 and the second supporting frame 904 are both threadedly connected to the two-way threaded rod 906 through a connecting seat 907, and the front end of the two-way threaded rod 906 is fixedly connected to a crank handle 908, and the right end of the lifting frame 901 is internally fixedly connected to a sliding rod 909. The bottom of the first supporting frame 903 and the second supporting frame 904 are both slidably connected to the sliding rod 909 through a sliding seat 910. When the height of the lifting frame 901 is adjusted, the two-way threaded rod 906 is rotated by the crank handle 908, and the distance between the first supporting frame 903 and the second supporting frame 904 is adjusted according to the size of the crankshaft under the connection of the connecting seat 907. In this process, the sliding seat 910 slides on the outside of the sliding rod 909, thereby driving the first supporting frame 903 and the second supporting frame 904 to move stably, so that after the crankshaft is placed, multiple sets of rollers 905 can contact the outside of the crankshaft, thereby supporting the crankshaft more stably.

[0031] In this embodiment, the implementation scenario is specifically as follows: when positioning the crankshaft, the crankshaft is placed on the supporting assembly 9 for support and its left end is in contact with the positioning plate 4, and then the movable frame 6 is moved by the displacement assembly 5 until the abutment plate 803 abuts the right end of the crankshaft. As the movable frame 6 continues to move, the abutment plate 803 moves to the right, and the telescopic rod 802 slides to the right with the movement of the abutment plate 803 until the rubber buffer block 806 abuts the inner side of the connecting frame 801, thereby positioning the two ends of the crankshaft through the abutment plate 803 and the positioning plate 4. When the abutment plate 803 moves to the right, the transmission arm 811 drives the multiple sets of positioning jaws 804 to gather together, and the positioning jaws 804 move toward the inside of the through slot 810 until the multiple sets of positioning jaws 804 synchronously clamp and fix the outside of the crankshaft. The multiple sets of positioning jaws 804 are used to assist in positioning the crankshaft. The entire operation process is simple and convenient. Compared with the existing crankshaft flaw detection device, the present invention can improve the positioning effect of the crankshaft flaw detection device on the crankshaft through design, and can avoid the displacement of the crankshaft positioning center during the detection process, causing impact damage.

[0032] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A crankshaft flaw detection device, comprising an equipment box (1), characterized in that: A support frame (2) is fixedly mounted on the left end of the top of the equipment box (1), a rotating motor (3) is fixedly mounted on the top of the left side of the support frame (2), a positioning plate (4) is fixedly mounted on the output end of the rotating motor (3) and located on the right side of the support frame (2), a displacement assembly (5) is fixedly mounted on the right end of the top of the equipment box (1), a mobile frame (6) is fixedly mounted on the top of the displacement assembly (5), a magnetizing ring (7) is fixedly mounted on the side opposite to the mobile frame (6), a positioning assembly (8) is rotatably connected to the top of the left side of the mobile frame (6), and a supporting assembly (9) is fixedly mounted on the top of the equipment box (1) and located between the support frame (2) and the mobile frame (6); The positioning assembly (8) comprises a connecting frame (801) rotatably connected to the top left side of the mobile frame (6); a telescopic rod (802) is slidably connected to the inner side of the connecting frame (801); an abutment plate (803) is fixedly mounted on the left end of the telescopic rod (802); and a plurality of positioning clamping claws (804) are rotatably connected to the left side of the connecting frame (801) and located outside the abutment plate (803).

2. The crankshaft flaw detection device according to claim 1, characterized in that: The right side of the connecting frame (801) is rotatably connected to the movable frame (6) via a rotating seat (805); the right end of the telescopic rod (802) is fixedly connected to a rubber buffer block (806); the front end of the telescopic rod (802) is fixedly connected to a connecting head (807); and a spring (808) is sleeved on the outside of the telescopic rod (802) and located between the connecting head (807) and the connecting frame (801).

3. The crankshaft flaw detection device according to claim 2, characterized in that: The abutment disc (803) is fixedly connected to the connector (807) via mounting screws (809), and a plurality of through slots (810) adapted for use with the positioning clamps (804) are provided inside the abutment disc (803).

4. The crankshaft flaw detection device according to claim 2, characterized in that: The plurality of groups of positioning clamps (804) are rotatably connected to the connector (807) via a transmission arm (811), and the left ends of the plurality of groups of positioning clamps (804) are sleeved with a rubber sleeve (812).

5. The crankshaft flaw detection device according to claim 1, characterized in that: The supporting assembly (9) includes a lifting frame (901) fixedly installed between the support frame (2) and the movable frame (6), and hydraulic cylinders (902) are fixedly installed at the four corners of the bottom of the lifting frame (901). The front end of the top of the lifting frame (901) is slidably connected to a first supporting frame (903), and the rear end of the top of the lifting frame (901) is slidably connected to a second supporting frame (904). The top ends of the first supporting frame (903) and the second supporting frame (904) are both rotatably connected to two sets of rollers (905).

6. The crankshaft flaw detection device according to claim 5, characterized in that: The left end of the lifting frame (901) is internally rotatably connected to a bidirectional threaded rod (906); the bottoms of the first supporting frame (903) and the second supporting frame (904) are both threadedly connected to the bidirectional threaded rod (906) via a connecting seat (907); and the front end of the bidirectional threaded rod (906) is fixedly connected to a crank (908).

7. The crankshaft flaw detection device according to claim 5, characterized in that: A slide bar (909) is fixedly connected to the inside of the right end of the lifting frame (901), and the bottoms of the first supporting frame (903) and the second supporting frame (904) are slidably connected to the slide bar (909) through a sliding seat (910).

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