SU1539646A1 - Device for checking wheel pairs of vans - Google Patents

Abstract

The invention relates to devices for magnetic flaw detection, especially shafts with large linear dimensions, and can be used to monitor wheelsets. The purpose of the invention is to reduce the labor intensity by increasing the usability of the device. This is achieved by the fact that the device for controlling carriages of wheel pairs contains detachable and one-piece solenoids, electrical contact heads, support rollers that drive the rotation of the wheelset, as well as a hydraulic system that includes a suspension container, a feed drive, a drain section, a drain pan, and a neck irrigation valve. wheelset axles. The one-piece solenoid is located coaxially with the pneumatic cylinder 6 and is mounted on a common stand with it, and the contact head is fixed on the pneumatic cylinder rod by means of a coil spring, and the hydraulic system contains a line for flushing the suspension, including the idle section and the operating mode section. Under each of the necks of the wheelset is mounted a drain pan, divided into two sections by a diaphragm with a flip cover, and in each section of the drain pan there is an outlet combined into a common line with a similar outlet of the other drain pan. At the same time, the irrigation taps and the slurry flush are combined into a common unit, hinged on a rotating lever mounted on a vertical stand. 3 il.

Description

The invention relates to non-destructive testing, namely, magnetic. powder flaw detection method, and can be used in the control of wheel pairs of cars.

The aim of the invention is to reduce the labor intensity of the control by increasing the convenience of the operation of the flaw detector assemblies.

 FIG. 1 shows the proposed device, a general view; in fig. 2 vertical rack with one-piece solenoid, pneumatic cylinder and contact head; in fig. 3 - hydraulic circuit of the device.

The device contains two screw pillars symmetrically and coaxially mounted on frame 1, having the possibility of vertical movement by means of an actuator, a turning mechanism 3 comprising a roller support with a rotation wheel set attached to each rack 2 of a magnetization unit in the form of electrical contact head 4 and one-piece solenoid 5, a clamping mechanism connected to a magnetization unit, made in the form of a pneumatic cylinder 6 with a rod 7, on which a one-piece solenoid 5 is coaxially positioned so as to move It, and at each end of the rod 1 of the pneumatic cylinder 6 by means of a spring 8 is fixed electrocontact tact head 4, power supply cable 9, which passes through the support rollers 10 and is fixed on the body of pneumatic cylinder 6, the hydraulic supply system and slurry irrigation, including the capacity 11 for suspension , drive 12 of its feeds the slurry discharge area 13 The hydraulic system also has a slurry feed line 14, including a blank section 15 and a working mode section 16. Under each neck of the wheelset of the car is a drain pan 17, divided into two sections by the diaphragm 18. with flip cover 19. Each section of the drain pan 17 has its own outlet fitting 20 and 21, which is combined into a common line 22 and 23 with a similar outlet fitting of the drain pan 17 under a different wheel piece pair 24. The hydraulic system also contains a second tank 25 for clean oil and a feed drive 26, as well as a pure oil supply line 27 including a blank section 28 and a working section 29. Distribution taps 30 watering neck-axis wheels. A pair of taps 31 and its flush are integrated into a common block 32, which is hinged on the rotating arm 33, which is mounted on a vertical rack 34. In the drain pan 17, the used oil is discharged through a fitting 21 into a sump 3-5 located in the tank 25 for pure oil.

The third solenoid 36 is detachable and mounted between the racks in the middle part area with the possibility of movement between them with the help of a screw.

37, which is closed by folding covers

38, moving along the guide cables 39. The movement of the one-piece solenoid 5 along the pneumatic cylinder 6 is carried out by means of the parallelogram mechanisms 40.

0

five

0

five

0

five

0

five

0

The device works as follows.

The controlled wheel pair is fed by the rotation mechanism 3. A magnetic control is carried out on the middle part of the axis of the wheel pair by means of a detachable solenoid 36 in an applied alternating magnetic field. Dry magnetic powder is used as an indicator of cracks in the middle part of the axis. First, the detachable solenoid 36 is installed in the desired height position, then the wheel pair is sprinkled with magnetic powder, and the solenoid 36 is moved along the axis of the pair along the screw 37 by means of an electric drive, while folding covers 38 protecting the screw 37 from being hit by the magnetic powder are moved along the guides cables 39, which simultaneously perform the function of protecting the covers 38 from falling into the zone of rotation of the screw 37. Carefully examine the surface of the wheelset sprinkled with magnetic powder. The middle part of the axle is defrosted by successively rotating the wheel set by 90 ° with the drive of the turning mechanism.

After testing the middle part of the axle, the inner rings of the bearings are checked without removing them from the necks 24 of the axle or the necks of the wheel set 24 if the inner rings of the bearings are removed. I

Magnetization of bearing rings

carried out by current pulses by discharging a capacitor battery through the axis of the wheelset, as well as using one-piece solenoids 5, covering the necks of the axis 24. To do this, use the screw posts 2 to set the required height of the pneumatic cylinders 6 and one-piece solenoids 5, and The axles of the wheel pair 24, using two parallelogram mechanisms 40, push the one-piece solenoids 5, the course of which Lg (m) is determined by the dependence

L2 C - min + max 1 min),

five

where 1

Max

LMHH

longest neck length

controlled wheel

couples;

shortest neck length

controlled wheel

couples,

2

3IMWH magnitude of the solenoid thrust, necessary for magnetizing the wheel pair neck; 0.75 - constant value

characterizing the stroke of the solenoid to demagnetize the neck of a controlled wheelset,

after that, the contact heads are pressed to the ends of the wheelset axis by L, (m), which is determined by the dependence

M (1moks-1 n),

0.11 where IMOKC is the longest neck length of a controlled wheel pair;

shortest neck length of a controlled wheel pair,

constant value characterizing the course of the solenoid to the end of the neck of a controlled wheel pair with a length

and through the power supply cable 9, which moves along the support rollers 10, current is passed through the axis of the wheel set. In order to press the contact heads 4, compressed air is supplied to the pneumatic cylinder 6, the rod 7 is advanced, by means of which the contact heads 4 are pressed through the coil spring 8.

By arranging the contact head 5 by means of a coil spring 8 on the rod 7 of the pneumatic cylinder 6, the necessary contact between the end of the axis of the wheelset and the contact head is ensured at any relative position between them.

When inspecting the necks of a wheel pair or worn inner bearing rings, a magnetic suspension is used. For this purpose, a suspension supply drive 12 is turned on, and the suspension is supplied from the container 11 via the supply line 14 to the operation mode section 16 and to the unit 32 where the suspension supply valve 30 is located. From the crane 30, the suspension is supplied to a controlled surface of the neck 24 of the wheelset. The flow-down suspension is collected in the drain pan 17. With the help of the flip cover 19, located on the diaphragm 18, a section is established for the suspension, which is poured over its volume

5396466

the inlet nozzle 20 into the container 11. The outlet nozzle 20 is combined into a common line 22 with a similar outlet nozzle 20 of the drain pan 17 under the other neck 24 of the wheelset. The slurry to be discharged through line 22 is fed for reuse into the container 11.

After watering the necks 24 of the wheelset, the suspension is magnetized by one-piece solenoids 5 and visually monitored. After that, the wheelset on the roller bearing is rotated by 90 ° and the operation of controlling the necks 24 of the wheelset is repeated.

When controlling the necks of the wheelset 24, a slurry with a constant concentration of metal particles is required. To do this, in the hydraulic system, the slurry supply line 14 has an idle mode section 15, in which in idle mode

15

20

the suspension is moved, due to which stirring takes place and a constant concentration of metal particles in the suspension is achieved.

After completion of the neck check, the wheelset axle 24 must be thoroughly cleaned of metallic particles that have settled after the control. For this, the hydraulic system of the device has a capacity of 25 with clean oil, from which it is driven by a drive 26 through the clean oil supply line 27 and the operating mode section 29 supplied to valve 34 for flushing slurry.

Crane 31 flush slurry combined into a common unit 32 with a crane 30 feed

suspensions. The common unit 32 is hinged on the rotating arm 33, which is mounted on a vertical stand 34, the height of which ensures the operation of the common unit 32 with wheel pairs of any diameter. The clean oil from the tap 31 of the slurry flush is fed to the neck 24 of the wheelset axle, and from there it flows into the drain pan 17. With the flip cover 19 located on the diaphragm 18, a section is installed for the clean oil, which is poured over the nozzle 21 through line 23 and supplied in the sump 35. After washing the necks

The 24 axles of the pair of wheels supplying clean oil to the operating mode section 29 is stopped and, at the common unit 32, switches to the idle mode section 28, allowing circulation

liquids in a closed circuit and avoiding safety and unloading valves from where the oil enters. capacity 25.

Claims (1)

Invention Formula A device for monitoring wheelsets of cars, containing two racks installed symmetrically and coaxially on the frame, mounted on each rack a magnetizing unit in the form of an electrical contact and a solenoid, a mechanism for turning and clamping an object of control, a hydraulic system for supplying and irrigating the suspension, including a tank for suspension, the drive of its supply, the drain section, the drain pan and the valve for irrigation of the neck of the wheelset axis and the third solenoid, characterized in that, in order to reduce the labor intensity of the control, the supports are made with home node magnetization vertical movement, 0 five five 0 the clamping mechanism is made in the form of a pneumatic rod with a rod, on the end of which an electrical contact is fixed by means of a coil spring, the solenoid of the magnetization assembly is installed coaxially with the pneumatic cylinder with the ability to move along it, the hydraulic system for feeding and irrigating the suspension contains a line for washing the suspension, including the idle section The operating mode of moving the suspension, the drain pan has an additional section, divided with the first diaphragm with a flip, each section of the drain pan has Exit combined in a common manifold, wherein the slurry feed and flushing valves are combined in a common unit, are hinged on the pivot arm mounted on a vertical stand, and the third solenoid configured and detachably mounted between the uprights movably therebetween. 40 in b 40 FIG L R m $ "VJ