CN202507847U - Economical turning repair wheel - Google Patents

Abstract

The utility model discloses an economical turning repair wheel, and relates to a wheel tread of a wheel. The economic turning repair wheel is characterized in that curved sections A, B, D, F, G, H and J of an XP55 type tread part are preserved; a part from the top point of the tread wheel flange of the XP55-type tread curves to the inner side of a rolling circle within the range of 16.55mm translates 4.5mm along the negative direction of a Y-axis, and is formed by connecting the sections of B and D and the sections of D and F by two sections of smooth curves in a smooth mode, so that the thickness Sd of the wheel flange is 28mm, the height Sh of the wheel flange is 29mm and a Qr value is 10.55mm. The economical turning repair wheel has the active effects that the service life of the wheel is prolonged, the maintenance cost is reduced, the turning repair period of the wheel is prolonged, and the repair workload is reduced; and the stability and smoothness of a train which runs on curved sections at high speed are guaranteed, the impact force of wheel rails generated during the high-speed running of the train at the curved sections is buffered, and acting forces of steel rails on the curves on a wheel shaft and a train body cannot be suddenly disappeared along with the transition of wheel sets.

Description

A kind of economical Xuan wheel that repairs

Technical field

The utility model relates to motor train unit bogie truck design field, the tread that particularly a kind of economical Xuan of XP55-28 that is applied to CRH5 EMUs CA250 bogie truck repairs and takes turns.

Background technology

Wheel tread profile plays crucial effects to the dynamic performance of train operation; After the EMU train gets into segment of curve; For continuity and the ride comfort of protecting positive train operation, and equilibrium centrifugation power, need outer rail be provided with certain superelevation; Thereby must between the linear portion of wheel tread profile and circular curve segment, insert one section transition curve; The curvature of this transition curve need be varied continuously to the curvature of circular curve by zero on the straight line, just is unlikely to cause the sudden change of wheel track power, and then improves the stability of train high speed curve motion.At present, according to the wheel standard of newly making that Alstomm proposes, the flange thickness after wheel Xuan repaiies need reach 32.5mm; When returning three grades in factory after yet CRH5 EMUs move 1,200,000 kilometers and repairing; Flange thickness is generally in the 26-28.5mm scope, for satisfy standard-required, the depth of cut when wheel Xuan repaiies big (8-12mm) just to reach the wheel rim of 32.5mm thick; Thereby cause the Xuan amount of repairing of wheel bigger, shortened the service life of wheel greatly.Therefore, be that the point of view reduces the wheel Xuan amount of repairing from changing flange thickness, and design a kind of new car wheel tread that can guarantee vehicle operating stability and stationarity, become a gordian technique with important value.To realize this gordian technique in conjunction with the partial contour of existing XP55 tread and the XP55-28 type tread that combines with transition curve.

The utility model content

The purpose of the utility model is the big problem of the wheel tread Xuan amount of repairing when repairing to three grades of present CRH5 EMUs bogie trucks, and the Xuan of the economical tread of a kind of New X P55-28 is provided the wheel that repairs.

For realizing above-mentioned purpose; The utility model provides a kind of economical Xuan the wheel that repairs; Relate to wheel tread, it is characterized in that: keep XP55 type tread part segment of curve A, B, D, F, G, H, J section, the interior part of the inboard 16.5mm scope of tread rolling circle is arrived along Y axle negative direction translation 4.5mm in the tread wheel rim summit of XP55 type wheel tread curve simultaneously; And respectively B, D section and D, the smooth connection of F section are formed through two sections smooth curves; Thereby make that flange thickness Sd is 28mm, flange height Sh is 29mm, and the Qr value is 10.5mm.

Two sections smooth curves are 4 transition curve C sections and E section, wherein:

C section transition curve expression formula:

z＝-324.86902+97.58191y-11.86122y ²+0.63148y ³-0.01244y ⁴

Origin coordinates point: starting point coordinate (10.34 ,-28.06), terminal point coordinate (14.68 ,-28.26);

E section transition curve expression formula:

z＝-339.35957+29.17217y-0.94814y ²+0.01369y ³-7.37618×10 ^-5y ⁴

Origin coordinates point: starting point coordinate (34.13 ,-4.72), terminal point coordinate (53.66 ,-1.16).

C section transition curve can form new wheel rim top profile, but flange height remains unchanged, and still is 29mm, and the pairing b1 of the former XP55 part of smooth connection curve, c1 2 points.E section and the pairing d1 of the former XP55 part of smooth connection curve, e1 2 points, the superelevation slope inclination angle of locating at d1,2 of e1 is r=0.

The utility model good effect: (1) prolongs wheel service life, reduces maintenance cost, suitably promotes wheel Xuan and repaiies the cycle, reduces maintenance workload.

(2) stability and the stationarity of assurance train high-speed cruising on segment of curve relax train and when segment of curve is run at high speed, produce wheel-rail impact power, guarantee that rail can be with taking turns right traversing not suddenly disappearing to the application force of wheel shaft and car body on the curve.

This tread and existing XP55 type tread parameter comparison are as shown in table 1 below:

Table 1XP55 tread and the economical tread basic specification of XP55-28

Tread	Sd(mm)	Sh(mm)	Qr(mm)
				The existing tread of XP55	32.5	29	11
The economical Xuan of XP55-28 repaiies tread	28	29	10.5

According to the not variation of the definition of UIC519 equivalence tapering; Do not change with interior profile in tread rolling circle ± 40mm scope; So equivalent taper value is 0.06 still, explain that this XP55-28 type tread does not change than XP55 tread dynamics with stability the stationarity of train operation.

Description of drawings

The economical Xuan of Fig. 1 XP55-28 wheel tread and the XP55 tread contrast scheme drawing that repairs;

The definition of Fig. 2 wheel tread geometric parameter;

Each segment of curve of Fig. 3 XP55-28 tread profile.

The specific embodiment

With reference to Fig. 1,2,3; The economical Xuan of the XP55-28 wheel tread that repairs is on the basis that keeps the A of existing XP55 tread profile, B, D, F, G, H, J segment of curve 3; By former XP55 type tread from the wheel rim summit to tread rolling circle (y=70; Z=0) characteristic section 2 because translation is damaged curve smoothing property, therefore adopts two sections 4 transition curve C curve sections and E segment of curve that B, D section and D, the smooth connection of F section are obtained XP55-28 tread characteristic section 1 along Y axle negative direction translation 4.5mm in the inboard 16.5mm scope; The flange thickness Sd of XP55-28 tread is that 28mm, flange height Sh are that 29mm, Qr value are 10.5mm; Dr, Δ r are on the tread rolling circle radius a bit, and L2 is that the wheel inner distance is arrived in the tread rolling circle position, and L1 is the distance of tread rolling circle measuring point to the wheel rim summit; L3 be Qr value measurement point to the vertical distance of tread rolling circle, d is the inboard distance of track.

With reference to Fig. 1,3 and table 2,3, connect b1 (10.34 ,-28.06), 2 of c 1 (14.68 ,-28.26) and connect the transition curve expression formula of 2 of d1 (34.13 ,-4.72), e1 (53.66 ,-1.16) following:

1) the C curve section (the transition curve expression formula of b1 → c1):

z＝-324.86902+97.58191y-11.86122y ²+0.63148y ³-0.01244y ⁴

Origin coordinates point: starting point coordinate (10.34 ,-28.06), terminal point coordinate (14.68 ,-28.26)

2) the E segment of curve (the transition curve expression formula of d1 → e1):

z＝-339.35957+29.17217y-0.94814y ²+0.01369y ³-7.37618×10 ^-5y ⁴

Origin coordinates point: starting point coordinate (34.13 ,-4.72), terminal point coordinate (53.66 ,-1.16)

C section transition curve can form new wheel rim top profile, but flange height remains unchanged, and still is 29mm, and the pairing b1 of the former XP55 part of smooth connection curve, c1 2 points.E section and the pairing d1 of the former XP55 part of smooth connection curve, e1 2 points, the superelevation slope inclination angle of locating at d1,2 of e1 is r=0.

Because the profile of XP55-28 tread in tread rolling circle ± 40mm scope do not have to change basically, less than changing, still be 0.06 according to the equivalent tapering of the definition of UIC519.

Each segment of curve head and the tail coordinate points of table 2XP55-28 type tread profile

Sequence number	The origin coordinates point	Stop coordinate points
			The A section	(0，-10.00)	(3.27，-21.63)
The B section	(3.27，-21.63)	(10.34，-28.06)
			The C section	(10.34，-28.06)	(14.68，-28.26)
The D section	(14.68，-28.26)	(34.13，-4.72)
			The E section	(34.13，-4.72)	(53.66，-1.16)
The F section	(53.66，-1.16)	(70.00，0.00)
			The G section	(70.00，0.00)	(102.63，1.79)
The H section	(102.63，1.79)	(127.37，5.28)
			The J section	(127.37，5.28)	(135，10.95)

Table 3XP55-28 tread profile coordinate points

Y(mm)	Z(mm)	Y(mm)	Z(mm)	Y(mm)	Z(mm)
						3.27	-21.63	46.59	-1.87	90.79	1.14
4.16	-22.77	47.47	-1.79	91.68	1.19
						5.04	-23.88	48.36	-1.70	92.56	1.24
5.92	-24.89	49.24	-1.60	93.45	1.29
						6.81	-25.79	50.13	-1.52	94.33	1.34
7.69	-26.53	51.01	-1.43	95.21	1.39
						8.58	-27.15	51.89	-1.34	96.10	1.44
9.46	-27.65	52.78	-1.25	96.98	1.49
						1034	-28.06	53.66	-1.16	102.63	1.79
11.23	-28.32	54.55	-1.07	107.59	2.31
						12.11	-28.58	55.43	-0.97	112.54	3.06
1290	-29.00	56.31	-0.89	117.48	3.80
						13.37	-28.66	57.20	-0.80	122.43	4.54
1400	-28.45	58.08	-0.73	127.37	5.28
						1468	-28.26	58.97	-0.66	131.66	7.33
15.57	-27.88	59.85	-0.59	135.00	10.95
						16.45	-27.40	60.73	-0.53
17.34	-26.82	61.62	-0.47
						18.22	-26.16	62.50	-0.41
19.10	-25.4	63.39	-0.36
						1999	-24.55	64.27	-0.31
20.87	-23.62	65.15	-0.26
						21.76	-22.56	66.04	-0.21
2264	-21.37	66.92	-0.17
						23.52	-20.00	67.81	-0.12
2441	-18.40	68.69	-0.073

25.29	-16.50	69.58	-0.024
						26.18	-14.28	70.00	0.00
27.06	-12.07	71.34	0.073
						27.94	-10.2	72.23	0.12
28.83	-8.72	73.11	0.17
						29.71	-7.54	74.00	0.22
30.6	-6.59	74.88	0.27
						31.48	-5.83	75.76	0.32
32.36	-5.21	76.65	0.36
						33.25	-4.72	77.53	0.41
34.13	-4.24	78.42	0.46
						35.02	-3.78	79.30	0.51
35.90	-3.41	80.18	0.56
						36.78	-3.11	81.07	0.61
37.67	-2.87	81.95	0.66
						38.55	-2.71	82.84	0.71
39.44	-2.60	83.72	0.75
						40.4	-2.50	84.61	0.80
41.28	-2.41	85.49	0.85
						42.17	-2.32	86.37	0.90
43.05	-2.23	87.26	0.95
						43.94	-2.14	88.14	0.99
44.82	-2.05	89.03	1.05
						45.71	-1.96	89.01	1.10

Claims (2)

1. economical Xuan wheel that repairs; Relate to wheel tread, it is characterized in that: keep XP55 type tread part segment of curve A, B, D, F, G, H, J section, the interior part of the inboard 16.5mm scope of tread rolling circle is arrived along Y axle negative direction translation 4.5mm in the tread wheel rim summit of XP55 type wheel tread curve simultaneously; And respectively B, D section and D, the smooth connection of F section are formed through two sections smooth curves; Thereby make that flange thickness Sd is 28mm, flange height Sh is 29mm, and the Qr value is 10.5mm.

2. a kind of economical Xuan according to claim 1 wheel that repairs is characterized in that: two sections smooth curves are 4 transition curve C sections and E section, wherein:

C section transition curve expression formula:

z＝-324.86902+97.58191y-11.86122y ²+0.63148y ³-0.01244y ⁴

Origin coordinates point: starting point coordinate (10.34 ,-28.06), terminal point coordinate (14.68 ,-28.26);

E section transition curve expression formula:

z＝-339.35957+29.17217y-0.94814y ²+0.01369y ³-7.37618×10 ^-5y ⁴

Origin coordinates point: starting point coordinate (34.13 ,-4.72), terminal point coordinate (53.66 ,-1.16).

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