JPH0622185Y2 - Vibration and temperature sensor mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a device for mounting a sensor for detecting vibration and heat generation temperature in a device having a movable part such as a rotating mechanism inside, for example.

(Prior Art) Conventionally, as described above, the vibration and heat generation temperature of a movable part surrounded by a case are measured by applying a measuring device to the outer surface of the case.

(Problems to be solved by the invention) In the case of vibration in the inspection by the above-mentioned conventional means, it is measured as a combined vibration value of all parts of the equipment combined, and the vibration value of the parts directly in the movable part cannot be obtained. In the case of temperature measurement, the heat of the heat generating part is transferred to the entire case and diffused, and there is a drawback that the temperature cannot be measured directly in the heat generating part.

(Means for Solving the Problems) In view of the above, the present invention eliminates the disadvantage of measurement by the outer case, and the outer case is fixed to the outer case by the sensor whose tip is located in the inner measuring section through the insertion hole provided in the outer case. It is designed to measure the vibration and heat generation temperature of the inspection unit regardless of the length, and a rod-shaped sensor made of a material with good heat conduction and vibration transmission is inserted into the insertion hole formed in the outer case that has the inspection unit inside. In a space between the insertion hole and the inner surface of the insertion hole, the tip end is brought into contact with the measuring portion, the base end is exposed to the outer surface of the case, and the heat insulation material is fitted to the middle portion of the rod-shaped sensor. The collar-shaped holder is used to hold the rod-shaped sensor in the insertion hole.

(Operation) In the present invention, the distal end (1a) is brought into contact with the inspection part b, and the proximal end (1a)
The bar-shaped sensor (1) with b) facing the outer surface of case a is
In the insertion hole (2) provided in the case a, there is a space (3) between the insertion hole (2) and the inner surface of the insertion hole (2) over the entire length, and the space is fitted to the rod-shaped sensor (1) in the middle of the insertion hole (2). Since it was held in the insertion hole (2) by the collar-shaped holder (4) made of the attached heat insulating material, if the material of the collar-shaped holder (4) is selected to absorb vibration, the rod-shaped holder ( In 1), the vibration and heat generation of the parts generated in the inspection section b can be transmitted to the base end (1b) with the maximum value, and the internal change in the movable portion can be measured as the vibration or the heat generation amount.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings.

In the illustrated example, the ball bearing for the bearing of the rotating shaft c and the oil seal portion mounted in the outer case a are installed in the inspection unit b.
(1) is inserted into the insertion hole (2) formed in the case a, the tip (1a) is brought into contact with the outer surface of the outer ring of the ball bearing b, and the base end (1b) is attached to the case a. This is a rod-shaped sensor facing the outer surface of the. Made of soft steel or stainless steel with good heat conduction and vibration transmission, and the insertion hole (2) has a rod-shaped sensor.
The diameter is larger than that of (1) so that when the sensor (1) is inserted into this, there is a space (3) at the outer circumference in the entire length, so that the sensor (1) is completely inserted from the case a. The sensor (1) is inserted into the hole (2) by the collar-shaped holder (4) fitted in the middle of the sensor (1).
(2) It was made to stick within.

The collar-shaped holder (4) is made of a material such as silicon rubber that can absorb heat and vibration.

Further, in the illustrated example, there is a collar-shaped protrusion (1c) contacting the outside of the collar-shaped holder (3) in the middle of the rod-shaped sensor (1), and an insertion hole.
(2) is a rod-shaped sensor in which the outer half part has a large diameter hole (2a) to form a step (2b) in the middle, and the collar-shaped holder (4) is brought into contact with the outside of the step (2b). Insert (1) into the insertion hole (2)
The holding member (5) made of a heat insulating material such as plastic having an opening (5a) larger in diameter than the sensor (1) in the center is screwed into the large hole (2a) in the outer half of (2). The inner surface of the sensor (1) is pressed by pressing the outer surface of the flange-shaped protrusion (2c) of the sensor (1) through the annular piece (6) of the same material as the flange-shaped holder (4).
In addition, the inner half space (3) of the insertion hole (2) in which the inner half of the rod-shaped sensor (1) is located is the urethane foam, glass wool, asbestos, etc. that is mounted surrounding the sensor (1). Filled with insulation (7).

Thus, the rod-shaped sensor (1) fixed in the insertion hole (2) is the tip.
(1a) and the base end (1b) except for the entire length of the collar-shaped holder (4),
A case a is formed by the pressing member (5), the heat insulating material (7) and the space.
The insulation layer is firmly fixed in the insertion hole (2) in a state in which the heat conduction and the vibration transmission to and from the case a can be accurately prevented by the respective isolation layers.

In the figure, (8) shows a caulking material with good heat conduction, such as mercury cream, which is interposed between the tip (1a) of the rod-shaped sensor (1) and the inspection part b to close the contact between them, and (9) is The small hole for inserting the jig for screwing the pressing member (5) is shown.

Further, FIG. 3 is a graph for measuring the frictional sound between the rotary shaft c and the oil seal portion of the bearing portion by converting it into a vibration value, and the rod-shaped sensor (1) according to the present invention is isolated from the case a and the insertion hole (2) is provided. The state of being attached to is shown in FIG. 1 and its structure is the same as that shown in FIGS.

In addition, in order to measure the vibration and heat generation temperature of the movable mechanism portion inside the device by the rod-shaped sensor (1), the base end (1b) of the sensor (1) located at the opening of the insertion hole (2) of the case a is measured. Apply the measuring instrument A directly or attach a sensing label to the base end surface of the sensor (1) to detect the vibration or heat generation temperature of the movable inspection unit b in the case a when necessary or periodically, or to detect the sensor (1 )
The base end face is permanently connected to the measuring device and managed so as to perform continuous measurement. If necessary, the detected value can be used as a data signal to automatically adjust the operating condition of the movable part in the case.

(Effect of the Invention) According to the present invention, since the rod-shaped sensor that is in contact with the movable detecting portion in the casing is inserted into and fixed to the casing without interposing the metal material, the vibration and heat generation temperature generated in the movable detecting portion are prevented. Accurate detection is possible without attenuation or amplification, and friction noise of movable members can also be detected by converting them into vibration values, facilitating the management of the wear state of members and causing adverse effects due to vibration, heat generation, rubbing, etc. Since it can be predicted in advance, it has an effect of minimizing the adverse effect of the production decrease due to the adverse effect.

[Brief description of drawings]

FIG. 1 is a cutaway side view showing an embodiment of the device of the present invention, FIG. 2 is a cutaway plan view of the enlarged main part, and FIG. 3 is a cutaway side view of the main part showing another use state, FIG. [Fig. 6] is a side view of a main part cut off in a conventional example. (1) …… Bar sensor, (1a) …… Sensor tip (1b) …… Sensor base end, (2) …… Insertion hole (3) …… Space, (4) …… Brim holder a …… Outside Case, b ... Inside inspection unit

Claims (1)

[Scope of utility model registration request] 1. A rod-shaped sensor (1) made of a material having good heat conduction and vibration transmission is inserted into an insertion hole (2) formed in an outer case (a) having a measuring section (b) inside, and the insertion hole (2) is formed over the entire length. ) And the space (3) between the inner surface and the tip (1a) of the inspection part b.
And press the base end (1b) to the outer surface of the case a to insert it.
Mounting of vibration and temperature detection sensor by sticking the rod-shaped sensor (1) in the insertion hole (2) by a collar-shaped holder (4) made of a heat insulating material fitted in the middle of the rod-shaped sensor (1) apparatus.