JPS6033388Y2 - Structure of suspension device in particle adhesion measuring instrument - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a sorting device for a particle adhesion measuring device.

Mechanisms for rotating the take-up wheels of sorting devices include those that use chains and belts, and those that use direct contact and transmission, such as gears and friction wheels.

The present invention uses the latter mechanism, and by incorporating it into a measuring device that measures the adhesion force and shear force of powder and granular materials, it is possible to perform measurement operations of the measuring device easily and smoothly. It provides equipment.

Next, the configuration of the present invention will be explained using examples.

Figure 1 shows an apparatus for measuring the adhesion force of powder sample P.
The device is composed of a main body 1, a measuring section 2, a detecting section 3, and a sorting device 4 arranged in the main body 1.

Furthermore, to explain the configuration of each part in more detail, the measuring parts 2 correspond to each other and are joined at the same position and height, and the powder sample P
It is composed of a fixed cell 6 that forms a volume space for filling the main body 1, a movable self, and a support 5 that suspends and supports the movable self via a suspension member 8. is fixed.

The suspension member 8 is made of a material that does not expand or contract under tensile loads, is arranged in a fixed direction so that the movable self can swing only in the longitudinal direction of the main body 1, and is used for measurement in the device. It has the necessary length so that the displacement of the movable self in the vertical direction can be ignored even if the movable self moves slightly in the horizontal direction.

In addition, the movable self can be moved relative to the fixed cell 6 without any trouble, and the suspension member 8 is arranged so that the gap between the suspension member 8 and the fixed cell 6 becomes zero under the natural suspension of the suspension member 8. It is set up.

16 is a presser weight, 17 is a filling cylinder, and the powder sample P is placed in the cell 6.
A fixing device 18 is used to join and fix the cells 6 and 7 during filling and pressing, and the fixing device 18 can be easily operated by operating a tightening lever 19 provided on the fixing device 18. It is configured such that the cells 6 and 7 can be fixed or released from holding.

Reference numeral 9 denotes a discharge pipe for discharging the powder sample P after measurement, one end of which is placed facing below the junction of both cells 6.7, and the other end of which is connected to the main body 1. It communicates with a removably attached saucer 10.

Next, the detection unit 3 is fixed to the load converter 11 and the load converter 11, and firmly supports both ends of the holding frame 12 and the elastic members 13, which hold the load converter 11 in a swingable manner through a plurality of elastic members 13, and also supports the load converter 11. The converter 11 is configured with a housing 14 for protecting the converter 11.

The load converter 11 and the movable self are connected by a latch 33 provided on the load converter 11 and a receiver 35 disposed on the movable self.

Further, the detecting section 3 and the sorting device 4 are connected to the holding frame 12 by a latch 34 provided at the end of the sorting member 15.

Note that an amplifier, a recorder, etc. (not shown) are connected to the load converter 11.

Next, the sorting device 4, which is the gist of the present invention, will be explained with reference to FIGS. 2 and 3.

A drive shaft 22 is connected to the electric motor 20 via a transmission 21.

A drive wheel 25 is fitted and fixed to the drive shaft 22.

Reference numeral 26 denotes a winding section 2 for winding up the sorting member 15 with a driven wheel.
7 and a knob 30, the drive wheel 25
The driven wheel 26 is placed on the peripheral edge of the driven shaft 23 to transmit power through pressure contact, and the driven wheel 26 is rotatably fitted and supported by the driven shaft 23 via a bearing 31.

In addition, in this embodiment, the driven wheel 26 has an appropriate weight and size so that in addition to the deceleration effect, the contact pressure with the driving wheel 25 is maintained at a predetermined value only by the own weight of the driven wheel 26 and related members. are doing.

A lining 29 is stretched around a local part of the driven wheel 26, and is made of rubber, leather, resin, etc. to increase the frictional force at the contact portion with the driving wheel 25.

In addition to the driven wheel 26, depending on the material of the lining 29, the peripheral edge surface of the driving wheel 25 may also be subjected to various treatments such as surface roughening to prevent slipping and application of an adhesive material.

Reference numeral 28 denotes a support rod, which has the driven shaft 23 at one end and a fulcrum shaft 24 at the other end, and supports the bracket 3 by using the fulcrum shaft 24.
2, which is rotatably held.

It should be noted that a spring or the like is added to the support rod 28 to increase the contact friction between the driving wheel 25 and the driven wheel 26 when there is no load or an initial load, or to prevent fluctuations caused by minute vibrations from the driving source. It is also possible to improve the followability of the driving wheels.

In addition, as another embodiment, the axis of the fulcrum shaft 24 may be arranged in a direction such that the driven wheel 26 is pressed by the driving wheel 25 during the moderation action by the moderation member 15, In this case, the axis position of the fulcrum shaft 24 is the position of the drive wheel 25, the action position of the moderating member 15 with respect to the winding part 27,
It changes depending on the direction, as shown in Figure 4(a), (
Some examples are shown in b), (c), and (d).

In other words, the present invention can be implemented as long as the axis position of the fulcrum shaft 24 is within the area surrounded by diagonal lines in the figure.
The setting and arrangement are made in consideration of the contact angle with 6, etc.

The sorting device 4 is connected to the main body 1 via an anti-vibration support member 36 in order to prevent the measuring section 2 and the detecting section 3 from being affected by vibration during operation.

Further, a clutch or a brake mechanism may be added between the electric motor and the drive section as necessary, which is effective in preventing overload on the electric motor.

In the above configuration, the main body 1 is placed on a horizontal table, and after the cells 6 and 7 are aligned and securely held and fixed by the fixture 18 and the tightening lever 119, the powder and granules are Press and fill sample P.

Next, remove the presser weight 16 and the filling tube 17, scrape off the excess powder sample P protruding from the upper end of the inside of the cell 6゜7 with a scraping plate (not shown), and remove the fixing tool 18 and the The fixing by the attached lever 19 is released, and the preparation for measurement of the measuring section 2 is completed.

In addition, in this state, the detection unit 3 detects the load converter 1.
The latch 33 provided on the latch 33 and the corresponding movable self-side receiver 35 are arranged at a position with a gap C such that they do not touch, thereby starting the sorting device 4 and removing the sorting member. 15 and the latch 34 provided thereon, when the load converter 11 is moved in the horizontal direction together with the holding frame 12, fluctuations in the sorting speed due to the elongation of the sorting member 15 that occurs at the beginning of the day when the load is applied, and The impact at the time of starting the sorting device 4 is not transmitted, and together with the elastic member 13 that supports the load converter 11, it is possible to stably apply and increase the additional load at a uniform speed. .

In this way, a horizontal tensile force is applied to the movable self via the support 35, but the bonding force between the particles of the powder sample P acts as a drag force against the tensile force. , both cells 6.7 as long as the tensile force does not exceed the limit of the bonding force.
does not leave.

Therefore, this tensile force is gradually increased until both cells 6.7 are detached, and the tensile force is detected by the load converter 11, and sequentially displayed and recorded by an amplifier and a recorder (not shown).
The maximum value of this expressed tensile force is determined as the adhesion force of the powder sample P.

Next, the operation of the sorting device 4 will be explained.

The power of the electric shaft 20 is changed into rotational motion via a transmission 21, and is transmitted to a drive shaft 22 to rotate a drive wheel 25.

When the driven wheel 26 that is in contact with the driving wheel 25 is rotated, the separating member 15 smoothly moves to the winding portion 26.
7, and the movable self is classified via the detection section 3.

Here, the driven wheel 26 is moved using the fulcrum shaft 24 of the support rod 28 as a fulcrum, so that the driven wheel 26 can follow the driving wheel 25 well, and the relationship between the driven wheel 26 and the driving wheel 25 is useful for measurement operations. It is also possible to easily release the contact and cancel the transmission of power.

Next, the effect depending on the arrangement position of the fulcrum shaft 24 will be explained as follows.

In other words, the axes of the driving wheel 25, the driven wheel 26 and the fulcrum shaft 24 of the support rod 28 are O, 02, 03, respectively, and the contact point between the form member 15 and the winding part 27 is T, and the form is When the tensile force acting on the member 15 is F, a force G as a component of the tensile force F is generated at point T.

By setting the position of 03 so that the direction of this force G is always toward the drive wheel 25 side with respect to the moderation member 15, this force G acts as a force that presses the driven wheel 26 against the drive wheel 25. Therefore, the frictional force at the contact portion between the two wheels 25 and 26 is increased, and the power of the driving wheel 25 can be effectively transmitted to the driven wheel 26.

Furthermore, since the pressing force G increases in proportion to the increase in the tensile force F, effective slip prevention and always stable and smooth operation are possible.

As described above, according to the present invention, it is possible to obtain a sorting device that is optimal for a measuring device that measures the adhesion force or shear force of powder or granular materials, that is, it is possible to obtain an optimal sorting device for a measuring device that measures the adhesion force or shear force of powder or granular materials. It is possible to carry out such sorting with simple operations, and in particular, it is also possible to arbitrarily correct the slack tension of the sorting member before starting sorting, and to immediately stop power transmission from the drive source. The effects of the present invention are great, as these operations can be performed using a simple and inexpensive mechanism.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing an embodiment of the present invention, Fig. 2 is an enlarged view of section A in Fig. 1, Fig. 3 is a sectional view taken along line B-B' in Fig.
FIG. 5 is an explanatory diagram of another embodiment. In the figure, 4... sorting device, 6...
Fixed cell, 7...Movable cell, 15...
Type member, 24... Fulcrum shaft, 25...
Drive wheel, 26... Driven wheel, 27... Winding section, 28... Support rod, P... Powder sample.

Claims (1)

[Scope of utility model registration request] An external force is applied to the powder sample P filled in a pair of two-part cells 6.7 to break it, and the value of the drag force at this time is used to calculate the adhesion force between particles of the powder sample P, or In a measuring device for measuring shearing force, etc., the measuring device is equipped with a driving wheel 25 in which the sorting device 4 is transmitted in order to apply the external force, and a driven wheel 26 that is brought into contact with and transmitted to the driving wheel 25 at its peripheral portion.
A support rod 2 rotatably supports a winding part 27 for winding up the sorting member 15 and a driven wheel 26 at one end.
8 and a fulcrum shaft 24 rotatably held at the other end.