CN2117299U - Shape remembering temp. alarm for axle of railway vehicle - Google Patents

Abstract

The utility model relates to a shape remembering temperature alarm for the axle of a train, mainly solving the disadvantage that original axle temperature detecting mode has poor effect and high labor intensity. The shape remembering temperature alarm for the axle of a train takes the bearing box of the train as a base, and the bearing box is provided with a shape remembering bar and a buzzer for heat control. Shape remembering valves slices in the shape remembering bar and the buzzer for heat control are made of shape remembering materials which can change shape in the specific range of temperature. People can know that the temperature of the axle of the train is high via the deformed remembering bar and the sound of the buzzer. The shape remembering temperature alarm for the axle of a train has simple structure and favorable warning effect.

Description

Shape remembering temp. alarm for axle of railway vehicle

The utility model relates to a kind of shape-memory material device direct and that indirectly the train axle temperature is reported to the police that utilizes.

If the train axle temperature is too high, just be prone to accident.Before this, people roughly adopt following three kinds of modes to the detection of train axle temperature: 1, station inspector is touched with hand; 2, survey with the thermocouple temperature measurement instrument.3, utilize infra-red detection, all there is more shortcoming in these three kinds of modes, as: the mode of touching with hand depends on people's experience, and its efficient is lower, does not satisfy the needs of railway modernization.The thermocouple temperature measurement instrument only is confined to passenger vehicle, and its range of use is restricted.Infra-red detection mode degree of automation height, but the ability of resisting various natural meteorological interference is (as the influence of snow mist, the ability of probe receiving infrared-ray is reduced), structure is complicated, and to judge according to the oscillography signal, reliability is not high, and particularly infrared components is fragile under high-voltage fence, does not adapt to the railway electrification requirement.

The purpose of this utility model is to overcome the deficiency of above-mentioned prior art, provides a kind of simple in structure, sensitive failure-free shape memory formula train bearing temperature alarm device.

The purpose of this utility model is to realize like this.We know that the main performance of shape-memory material shows as can produce displacement and the power that has functional relation with temperature in specific range of temperatures.Utilize this characteristic, with the bear box 1(or the antifriction-bearing box body of train) be pedestal, 2 and thermal control hummers 3 of a shape memory rod are set thereon.Shape memory rod 2 be one with shape-memory material make "

" the type clava, when the train axle temperature acquired a certain degree, the shape of memory stick 2 just changed, and it highly extends, become "

" type, just can judge that by altered shape and height the train axle temperature is too high.The shell of thermal control hummer 3 is casings 6 that a two connects, its two ends respectively are provided with a shape memory valve 7, also be provided with reed 8 in the casing 6, when the train axle temperature is too high, the shape of shape memory valve 7 will change, thereby has opened the inlet and outlet at casing 6 two ends, and the action of high-speed airflow in its casing 6 is equivalent to reed in the mouth organ in reed 8(), it is sent ring, inform that people's train axle temperature is too high.In order to prevent that when the moment of valve sheet 7 actions casing 6 internal volumes reduce to cause the case internal pressure to increase, and can open an air extractor duct 9 in the bottom of casing 6.

In addition, on above-mentioned said shape memory rod 2, scribble variable color paint.When the train axle temperature surpassed set point of temperature from low to high, painting color just can become light tone by dead color, made the shape memory rod 2 after the deformation more eye-catching.

The utility model is simple in structure, and it is effective to report to the police, and is eye-catching directly perceived, is not subjected to the restriction of natural conditions, than other type of alarm incomparable advantage arranged:

For example: the vehicle length of the halt of standing forwardly is long when occurring, or sleet is met at the station forwardly, and during the situation of natural cooling, owing to lose thermal source, touch or infra-red detection mode all lost efficacy, can occur fail to report by staff for axle temperature.And still there be (so time shape memory part be unidirectional memory) because of shape memory rod and valve sheet in shape memory formula warning device because of the deformation that overtemperature produces.So can report to the police as usual, when cover such as coal, sand was arranged on the bear box, the alternate manner leakiness was reported to the police.And the shape memory rod in the shape memory formula warning device can overcome cover resistance generation deformation, Normal Alarm.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is a running condition principle schematic in the utility model practical application.1 is bear box among the figure, and 2 is the shape memory rod, and 3 is hummer, and 4 for being arranged on the travel switch on the sleeper, and 5 is the telltale (being located at Duty Office) that links to each other with travel switch 4.

Fig. 2 be among Fig. 1 hummer 3 at axle temperature structural representation just often.6 is casing among the figure, and 7 is the shape memory valve sheet, and 8 is reed, and 9 is air extractor duct.

Fig. 3 is the structural representation (this moment valve sheet 7 generation deformation) of hummer 3 when the axle temperature overtemperature among Fig. 1.

Fig. 4 be among Fig. 1 memory stick 2 axle temperature just often with the scheme drawing of travel switch 4 separated attitudes.

Fig. 5 be among Fig. 1 memory stick 2 when the axle temperature overtemperature and travel switch 4 contacted constitutions diagram (this moment switch 4 connect).

Fig. 6 is the circuit diagram in the telltale 5 among Fig. 1.10 is the source switch of telltale among the figure, and 11 are the warning bulb, and 12 is alarming horn.

Shape memory rod 2 and shape memory valve sheet 7 in the utility model all can adopt copper series of shapes memory alloy material to make.This practical principle of work can be intuitively judged the axle temperature overtemperature from the ringing of the deformation of memory stick 2 and hummer 3 except that above-mentioned, by setting up a travel switch 4 and telltale 5 among Fig. 1, can be made the staff more laborsaving.When train from the checkpoint through out-of-date, if any the axle temperature overheating problem, then shape memory rod 2 will produce deformation, the travel switch 4 on the sleeper is mixed in its underpart, thereby connects the telltale 5 in the watch house, sends the alerting signal of sound and light by bulb and loudspeaker.

Claims (2)

1, a kind of shape memory formula train bearing temperature alarm device, it is a pedestal with the bear box 1 of train, it is characterized in that: 2 and thermal control hummers 3 of a shape memory rod are set on bear box 1, shape memory rod 2 is one and makes " Contraband " type clava with shape-memory material, the shell of thermal control hummer 3 is casings 6 that a two connects, its two ends respectively are provided with a shape memory valve sheet 7, are provided with reed 8 in the casing 6, and the bottom of casing 6 has air extractor duct 9.

2, shape memory formula train bearing temperature alarm device according to claim 1 is characterized in that: scribble variable color paint on the above-mentioned said shape memory rod 2.

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