A vertical detection device for crankshaft surface quenching inductor

Abstract

The utility model discloses a kind of vertical detection devices of crankshaft surface quenching inductor, the both ends of crossbeam are connected with the stem of V-shaped iron, and the middle part of crossbeam is connected with connecting beam;Two sides V-shaped iron fall on crankshaft quenching journal;Right-angle protractor is placed on connecting beam, and the vertical end surface of right-angle protractor is in abutment with the side end surface guard plate of quenching inductor.The utility model realizes whether the detection to quenching inductor outer guard plate is perpendicular to crankshaft center line, indirectly realizes inductor internal induction coil and journal parallel coaxial detection, to avoid the inductor internal induction coil and journal parallel coaxial deviation problem caused by artificial visual detection, improve crankshaft quenching quality.

Description

Technical Field

[0001] This utility model relates to the field of machinery, specifically to a crankshaft machining technology, and more specifically to a positioning and detection device. Background Technology

[0002] Large crankshafts often employ surface hardening to enhance their surface heat treatment. This surface hardening process utilizes a medium-frequency induction hardening inductor, suspended from the transformer of the crankshaft hardening machine. During hardening, the inductor is lowered onto the crankshaft journal via a lifting device. The induction coil inside the inductor remains parallel and coaxial with the journal surface to ensure a uniform hardened layer on the journal surface during the hardening process. If, when the inductor is placed on the journal, the induction coil fails to remain coaxial with the outer surface of the journal (externally observed as a vertical deviation in the outer protective plate on the inductor's side end), a horizontal deviation will occur in the gap between the inductor's coil and the crankshaft, resulting in a variation in the horizontal hardened layer depth on the same journal.

[0003] The traditional method for detecting whether the sensor coil can be parallel and coaxial with the journal surface is to visually inspect whether the outer protective plate on the side end of the sensor is perpendicular to the journal, but visual inspection is subject to error. Utility Model Content

[0004] To solve the above problems, this utility model discloses a vertical detection device for a crankshaft surface hardening inductor. The two ends of the crossbeam are connected to the rods of the V-shaped iron, and the middle part of the crossbeam is connected to the connecting beam. The V-shaped irons on both sides rest on the crankshaft hardening journal. A right-angle ruler is set on the connecting beam, and the vertical end face of the right-angle ruler abuts against the outer protective plate of the side end face of the hardening inductor.

[0005] A pad is provided on the lower surface of the V-shaped iron.

[0006] The rod is provided with a strip-shaped slot, and the crossbeam is fixed in the strip-shaped slot by a fixing bolt.

[0007] The crossbeam is provided with a second strip-shaped slot, and the connecting beam is fixed in the second strip-shaped slot by a second fixing bolt.

[0008] The second set of fixing bolts consists of two groups.

[0009] The advantages of this utility model are: it can detect whether the outer protective plate of the quenching inductor is perpendicular to the crankshaft centerline, and indirectly detect whether the induction coil inside the inductor is parallel and coaxial with the journal, so as to avoid the problem of deviation between the induction coil inside the inductor and the journal caused by manual visual inspection. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 for Figure 1 The left view;

[0012] Figure 3 for Figure 1 Top view;

[0013] Figure 4 This is a schematic diagram showing the positional relationship between the present invention and the crankshaft. Detailed Implementation

[0014] The present invention will now be described in detail with reference to the accompanying drawings. As shown in the drawings, the two ends of the crossbeam 2 are connected to the rod portion 101 of the V-shaped iron 1, and the middle part of the crossbeam 2 is connected to the connecting beam 3; the V-shaped irons 1 on both sides rest on the crankshaft quenching journal; a right-angle ruler 4 is provided on the connecting beam, and the vertical end face of the right-angle ruler 4 abuts against the outer protective plate of the side end face of the quenching inductor 5.

[0015] To accommodate crankshafts of different diameters, a pad 6 is provided on the lower surface of the V-shaped iron 1.

[0016] To adjust the height of the crossbeam, the rod 101 is provided with a strip-shaped slot 102, and the crossbeam 2 is fixed in the strip-shaped slot 102 by fixing bolts 7 and washers 8.

[0017] To adjust the spacing between the two V-shaped irons 1 to accommodate crankshafts of different specifications, the crossbeam 2 is provided with a strip-shaped slot 201, and the connecting beam is fixed in the strip-shaped slot 201 by a fixing bolt 210.

[0018] To ensure strength, there are two sets of fixing bolts 10.

[0019] The working principle of this utility model is as follows: Before crankshaft quenching, the crossbeam 2 and connecting beam 3 are fixed on the V-shaped irons 1 on both sides by tightening the fixing bolts 7. Then, the position of the crossbeam 2 and connecting beam 3 is adjusted to determine the distance between the V-shaped irons 1 on both sides to ensure matching with the crankshaft. Finally, the V-shaped irons 1 on both sides are placed on the crankshaft 9 quenching journal to ensure that the connecting beams 2 and 3 are horizontal with the center line of the crankshaft 9. Then, the right-angle ruler 4 is placed on the connecting beam 3 and the vertical end face of the right-angle ruler 4 is made to abut against the outer protective plate of the side end face of the quenching sensor 5. The gap between the right-angle ruler and the outer protective plate is visually observed. If the gap is consistent vertically, it indicates that the outer protective plate is in a vertical state. This realizes the detection of whether the outer protective plate of the quenching sensor is perpendicular to the center line of the crankshaft, that is, indirectly realizes the detection of the parallel and coaxiality of the induction coil inside the sensor with the journal.

[0020] By using this testing device, the parallel and coaxial detection of the induction coil inside the sensor and the journal can be indirectly achieved, thereby avoiding the problem of deviation between the parallel and coaxial detection of the induction coil inside the sensor and the journal caused by manual visual inspection, and improving the quenching quality of the crankshaft.

Claims

1. A vertical detection device for a crankshaft surface hardening inductor, characterized in that: The two ends of the crossbeam are connected to the rods of the V-shaped iron, and the middle of the crossbeam is connected to the connecting beam; the V-shaped irons on both sides rest on the crankshaft quenching journal; a right-angle ruler is set on the connecting beam, and the vertical end face of the right-angle ruler abuts against the side end face of the quenching inductor.

2. The vertical detection device for crankshaft surface hardening inductor according to claim 1, characterized in that: A pad is provided on the lower surface of the V-shaped iron.

3. The vertical detection device for crankshaft surface hardening inductor according to claim 1, characterized in that: The rod is provided with a strip-shaped slot, and the crossbeam is fixed in the strip-shaped slot by a fixing bolt.

4. The vertical detection device for crankshaft surface hardening inductor according to claim 1, characterized in that: The crossbeam is provided with a second strip-shaped slot, and the connecting beam is fixed in the second strip-shaped slot by a second fixing bolt.

5. The vertical detection device for crankshaft surface hardening inductor according to claim 4, characterized in that: The second set of fixing bolts consists of two groups.

Images