Cam detection device

Abstract

The cam detection device comprises a fixed seat and a distance measuring sensor, a sliding opening is formed in the fixed seat, a sliding block is movably connected in the sliding opening, a spring is fixedly connected to the top of the sliding block, the spring is fixed to the fixed seat, a limiting groove is formed in the fixed seat and communicated with the sliding opening, and the distance measuring sensor is arranged in the limiting groove and communicated with the sliding opening. Two L-shaped rods are movably connected into the limiting groove and fixed to the two sides of a sliding block correspondingly, a fixing rod is fixedly connected to one side of the sliding block, a rotating wheel is movably connected to the outer side of the fixing rod, a rotating rod is fixedly connected to one side of the fixing base, and a motor is fixedly connected to the other side of the fixing base. And one end of an output shaft of the motor is fixed with the rotating rod. According to the utility model, not only can the swing lengths of the cam bodies with different sizes be accurately detected, but also the cam bodies can be conveniently disassembled, assembled and replaced by a worker through the limiting assembly.

Description

Technical Field

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

[0002] The cam comprises a camshaft and a cam body, and the camshaft and the cam body are generally processed as one piece.

[0003] After searching, a Chinese patent with publication number CN206330536U discloses a cam detection device, which can realize full and rapid detection of the cam phase angle. However, during detection, the device can only detect the phase angle of the cam. When the cam is used, it is necessary to know the length of the cam's swing. Manual measurement is time-consuming and has large accuracy errors. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a cam detection device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A cam detection device comprises a fixed seat and a ranging sensor, a sliding opening is provided inside the fixed seat, a slider is movably connected inside the sliding opening, a spring is fixedly connected to the top of the slider, and the spring is fixed to the fixed seat, a limiting groove is provided inside the fixed seat, and the limiting groove is communicated with the sliding opening, two L-shaped rods are movably connected in the limiting groove, and the L-shaped rods are respectively fixed on both sides of the slider, a fixed rod is fixedly connected to one side of the slider, a rotating wheel is movably connected to the outside of the fixed rod, a rotating rod is fixedly connected to one side of the fixed seat, a motor is fixedly connected to the other side of the fixed seat, and one end of the motor output shaft is fixed to the rotating rod, a cam body is installed on the outside of the rotating rod through a detachable limiting component, and the rotating wheel is in contact with the cam body.

[0007] As a further solution of the utility model, the limiting assembly includes two protrusions, and the protrusions on both sides are respectively welded on both sides of the rotating rod, the inner wall of the cam body is provided with two grooves, and the protrusions are plugged into the grooves, the outer side of the rotating rod is sleeved with a limiting ring and the protrusions are fixed to the limiting ring, the outer side of the rotating rod is provided with a threaded groove, the outer side of the threaded groove is movably connected with a retaining ring, and the limiting ring and the retaining ring are in contact with the cam body.

[0008] As a further solution of the utility model, a connecting rod is fixedly connected between the two L-shaped rods, and the distance measuring sensor is fixed at the bottom of the connecting rod.

[0009] As a further solution of the utility model, both ends of the connecting rod are fixedly connected with a clamping block, the top of the L-shaped rod is provided with a clamping groove, and the clamping block is clamped with the clamping groove.

[0010] As a further solution of the utility model, a first magnetic block is fixedly connected to the bottom of the clamping block.

[0011] As a further solution of the utility model, a second magnetic block is fixedly connected to the bottom of the slot, and the first magnetic block is in contact with the second magnetic block.

[0012] As a further solution of the utility model, a sliding rod is fixedly connected to the bottom of the sliding opening, and the sliding block is slidably connected to the sliding rod, and the spring is sleeved on the outer side of the sliding rod.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model can detect the swing length of cam bodies of different sizes with high detection accuracy, avoiding time-consuming manual measurement with large precision errors, and improving the detection effect of the device.

[0015] 2. By setting the limiting components, it is convenient for the staff to disassemble, assemble and replace the cam body, thus improving the convenience of the device.

[0016] 3. Through the coordinated use of the first magnetic block and the second magnetic block, it is convenient for the staff to disassemble the distance measuring sensor, and it is convenient for the staff to check and repair it, thereby improving the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front three-dimensional structure of a cam detection device proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the rear three-dimensional structure of a cam detection device proposed by the utility model;

[0019] Figure 3 This is a partial enlarged structural schematic diagram of a cam detection device proposed by the utility model;

[0020] Figure 4 It is a partial cross-sectional structural schematic diagram of a cam detection device proposed by the utility model;

[0021] Figure 5 A schematic diagram of the enlarged structure of the A part of a cam detection device proposed by the utility model

[0022] In the figure: 1, fixed seat; 2, sliding mouth; 3, sliding block; 4, rotating wheel; 5, L-shaped rod; 6, connecting rod; 7, rotating rod; 8, cam body; 9, sliding rod; 10, limiting groove; 11, spring; 12, limiting ring; 13, threaded groove; 14, retaining ring; 15, fixed rod; 16, clamping block; 17, clamping groove; 18, distance sensor; 19, first magnetic block; 20, second magnetic block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, other embodiments obtained by ordinary technicians in this field without making creative work are all within the scope of protection of the utility model.

[0024] Reference Figure 1-Figure 5 A cam detection device includes a fixed seat 1 and a distance sensor 18, the model of the distance sensor 18 is GP2Y0A02YK0F, a sliding port 2 is provided inside the fixed seat 1, a slider 3 is slidably connected inside the sliding port 2, a spring 11 is welded on the top of the slider 3 for resetting it, and the spring 11 is fixed to the fixed seat 1, a limiting groove 10 is provided inside the fixed seat 1, and the limiting groove 10 is connected to the sliding port 2, two L-shaped rods 5 are slidably connected in the limiting groove 10, and the L-shaped rods 5 are respectively fixed on both sides of the slider 3, a fixing rod 15 is fixed to one side of the slider 3 by bolts, and a rotating wheel 4 is rotatably connected to the outer side of the fixing rod 15, a rotating rod 7 is fixed to one side of the fixed seat 1 by bolts, and the fixed seat 1 A motor is fixed to the other side of the rotating rod 7 by bolts, and one end of the motor output shaft is fixed to the rotating rod 7. A cam body 8 is installed on the outer side of the rotating rod 7 through a detachable limiting assembly, and the rotating wheel 4 is in contact with the cam body 8. The limiting assembly clamps and fixes the cam body 8. The rotation of the motor causes the rotating rod 7 to drive the cam body 8 to rotate, so that the cam body 8 pushes the rotating wheel 4 to move upward. At the same time, the slider 3 moves upward along the sliding mouth 2, and the spring 11 contracts. The movement of the slider 3 causes the L-shaped rod 5 to slide upward along the limiting groove 10, so that the connecting rod 6 drives the distance measuring sensor 18 to move upward, and then the distance measuring sensor 18 accurately detects the distance between it and the top of the fixing seat 1, and the detected number is the swing length of the cam body 8.

[0025] In the present invention, it should be noted that the limiting component includes two protrusions, and the protrusions on both sides are respectively welded on the two sides of the rotating rod 7. The inner wall of the cam body 8 is provided with two grooves, and the protrusions are plugged into the grooves. The outer side of the rotating rod 7 is sleeved with a limiting ring 12, and the protrusions are fixed to the limiting ring 12. The limiting ring 12 can limit the installation distance of the cam body 8. A threaded groove 13 is provided on the outer side of the rotating rod 7. The outer side of the threaded groove 13 is threadedly connected with a retaining ring 14, and the limiting ring 12 and the retaining ring 14 are in contact with the cam body 8. When the cam body 8 needs to be disassembled, the retaining ring 14 is rotated to move it out of the rotating rod 7, and then the cam body 8 is moved out of the rotating rod 7, which is convenient for the staff to disassemble and assemble the cam bodies 8 of different sizes. A connecting rod 6 is fixed between the two L-shaped rods 5 by bolts, and the distance measuring sensor The sensor 18 is fixed to the bottom of the connecting rod 6, and both ends of the connecting rod 6 are fixed with a block 16 by bolts. A slot 17 is provided on the top of the L-shaped rod 5, and the block 16 is engaged with the slot 17, which is convenient for the staff to position and install the connecting rod 6. A first magnetic block 19 is fixed to the bottom of the block 16 by bolts, and a second magnetic block 20 is fixed to the bottom of the slot 17 by bolts, and the first magnetic block 19 is in contact with the second magnetic block 20. When the distance sensor 18 needs to be disassembled, the connecting rod 6 is pulled upward to separate the first magnetic block 19 from the second magnetic block 20. A slide bar 9 is fixed to the bottom of the sliding port 2 by bolts, and the slider 3 is slidably connected to the slide bar 9. The slide bar 9 can guide the slider 3 so that it can move up and down stably. The spring 11 is sleeved on the outside of the slide bar 9.

[0026] Working principle: when it is necessary to detect the swing length of the cam body 8, first, the cam body 8 to be detected is inserted into the outer side of the rotating rod 7 until the cam body 8 contacts the limiting ring 12 and the protrusion completely enters the groove, then the snap ring 14 is inserted into the rotating rod 7 and rotated into the threaded groove 13, so that the snap ring 14 is in close contact with the cam body 8, thereby clamping and fixing the cam body 8, and then starting the motor, the motor rotation causes the rotating rod 7 to drive the cam body 8 to rotate, so that the cam body 8 pushes the rotating wheel 4 to move upward, and at the same time the slider 3 moves upward along the sliding mouth 2, and the spring 11 contracts, the slider 3 moves to make the L-shaped rod 5 slide upward along the limiting groove 10, so that the connecting rod 6 drives the distance sensor 18 to move upward, and then the distance sensor 18 accurately detects the distance between it and the top of the fixing seat 1, and the detected number is the swing length of the cam body 8.

[0027] In addition, the terms "installation", "setting", "connection" and "socketing" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components. Those skilled in the art can understand the specific meanings of the above terms in this application according to specific circumstances.

Claims

1. A cam detection device, comprising a fixing seat (1) and a distance measuring sensor (18), characterized in that: The fixed seat (1) is provided with a sliding opening (2) inside, a slider (3) is movably connected inside the sliding opening (2), a spring (11) is fixedly connected to the top of the slider (3), and the spring (11) is fixed to the fixed seat (1), a limiting groove (10) is provided inside the fixed seat (1), and the limiting groove (10) is communicated with the sliding opening (2), two L-shaped rods (5) are movably connected inside the limiting groove (10), and the L-shaped rods (5) are respectively fixed on both sides of the slider (3), a fixing rod (15) is fixedly connected to one side of the slider (3), and a rotating wheel (4) is movably connected to the outer side of the fixing rod (15), a rotating rod (7) is fixedly connected to one side of the fixed seat (1), and a motor is fixedly connected to the other side of the fixed seat (1), and one end of the motor output shaft is fixed to the rotating rod (7), a cam body (8) is installed on the outer side of the rotating rod (7) through a detachable limiting component, and the rotating wheel (4) is in contact with the cam body (8).

2. A cam detection device according to claim 1, characterized in that: The limiting assembly comprises two protrusions, the protrusions on both sides are respectively welded to the two sides of the rotating rod (7), the inner wall of the cam body (8) is provided with two grooves, and the protrusions are plugged into the grooves, the outer side of the rotating rod (7) is sleeved with a limiting ring (12), and the protrusions are fixed to the limiting ring (12), the outer side of the rotating rod (7) is provided with a thread groove (13), the outer side of the thread groove (13) is movably connected with a snap ring (14), and the limiting ring (12) and the snap ring (14) are in contact with the cam body (8).

3. A cam detection device according to claim 1, characterized in that: A connecting rod (6) is fixedly connected between the two L-shaped rods (5), and a distance measuring sensor (18) is fixed at the bottom of the connecting rod (6).

4. A cam detection device according to claim 3, characterized in that: Both ends of the connecting rod (6) are fixedly connected with clamping blocks (16); a clamping groove (17) is provided on the top of the L-shaped rod (5), and the clamping block (16) is clamped with the clamping groove (17).

5. A cam detection device according to claim 4, characterized in that: The bottom of the clamping block (16) is fixedly connected to a first magnetic block (19).

6. A cam detection device according to claim 5, characterized in that: A second magnetic block (20) is fixedly connected to the bottom of the slot (17), and the first magnetic block (19) is in contact with the second magnetic block (20).

7. A cam detection device according to claim 1, characterized in that: The bottom of the sliding opening (2) is fixedly connected with a sliding rod (9), and the sliding block (3) is slidably connected to the sliding rod (9), and the spring (11) is sleeved on the outer side of the sliding rod (9).

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