JPH0366615B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic temperature measuring and sampling device for automatically measuring the temperature of molten metal and automatically collecting a sample, and particularly relates to a lance in the device.

In most existing measuring devices, the temperature and oxygen measuring device and the sampling device using a ladle-type sampler are each independent, and when measuring and sampling the same molten metal, it is necessary to have a temperature and oxygen measuring device,
A total of two sets of equipment, a ladle-type sampler and a sampling device, are required, and installation in a small space is extremely difficult. In the case of sampling devices, the ladle sampler usually has a long rod-like handle, the upper end of which is releasably gripped by a lance, and the lower end of the ladle sampler is brought into the molten metal by a lance lifting device. Samples are collected, and in the case of temperature and oxygen measuring devices, the measurement holder is exchangeably held by a lance and immersed in molten metal to perform measurements. Therefore, the above problems can be solved by developing a lance that can hold the temperature and oxygen measuring holder and the ladle-type sampler interchangeably.

The present invention was made based on the above-mentioned knowledge, and the present invention provides a temperature and oxygen measurement holder and a ladle type sampler that can be attached and detached with one lance, and a lance lifting drive unit and a lance lifting guide frame. To provide a lance which can be used as a slag splitting device by requiring only one set of slag splitting fittings, etc., and which can also automatically attach and detach a slag splitting fitting for splitting slag on the surface of molten metal.

According to the present invention, the rod-shaped body gripping and releasing mechanism is provided within the outer tube and includes a cylinder, a rod, a link, and a catch. A measurement holder and a ladle-type sampler automatic attachment/detachment lance are provided.

The guide is provided with a guide surface that expands downward and a guide hole connected to the guide surface, and the rod-shaped portion at the upper end of the ladle-type sampler or measurement holder is first aligned with the guide surface, Next, it is guided to the grip and release mechanism by the guide hole.

In a preferred embodiment of the present invention, a box to which a gas hose with a measurement lead wire passed inside can be connected, and a hose for driving the cylinder are attached to the top of the lance, and a holder for temperature and oxygen measurement is attached to the box. A gas seal ring is attached to the contact surface with the lance to prevent gas leakage, and a gas release hole is provided at the lower end of the holder.

The gas may be air, N ₂ or Ar gas.

The holder attached to the lower end of the lance has a tapered contact part with the lance, a gas seal link is attached to the tapered part to prevent gas leakage, and a grippable rod-shaped holder with a connection part with multiple contacts at the upper end. Attach the handle and provide a gas inlet hole in the handle.
The holder is cooled by flowing cooling air or part of N ₂ or Ar gas into the holder and releasing it to the outside from the connector at the tip of the holder.
Furthermore, since tar is prevented from adhering to the connector portion, deterioration in insulation caused by tar adhesion can be prevented.

The following description will be made with reference to the drawings showing preferred embodiments of the present invention. In FIG. 1, 1 indicates a long handle 1a.
This is a ladle-type sampler consisting of a cup-shaped container 1b fixed to the lower end of a handle 1a. As shown in the figure, a large number of samplers 1 are arranged on two upper and lower plates 2a, 2.
Hold spring 3 installed on the circumference of b
Each handle 1a is held and supported by the handles. The sampler 1 is manually attached by pushing it laterally onto the hold spring 3. Another plate 4 is arranged below the plate 2a, and the lower end of each container 1b is connected to the plate 4.
comes into contact with. The plate 4 is provided with a backing plate 5 that keeps the direction of the container part 1b relative to the handle 1a of each sampler 1 constant, and a receiving part 6 that prevents the direction of the sampler from changing during cutting. The plates 2a, 2b, 4 are fixed to a shaft 7 via a bearing unit, and an electric motor 8 drives the shaft 7 via a reduction gear 9. Strikers 10 are mounted on the plate 4 at equal angles according to the number of samplers 1 that can be supported.
is attached, and the shaft 7 is rotated in an indexing manner by the striker 10 actuating a limit switch (not shown). These parts are supported on a stock truck 12 having wheels 11, and the stock truck 12 is moved forward and backward on rails 14 by an air cylinder 13. Air cylinder 13 and rail 14 are attached to base 15.

The indexically positioned sampler (shown as 1' in FIG. 1) is transferred to the loading device 16 as the stock truck 12 advances. The mounting device 16 includes two sets of vertically spaced clamp arms 17a, 17b, and an air cylinder 18 for opening and closing each set of clamp arms to grip the handle 1'a of the sampler 1'. The clamp arm has a V-groove to facilitate gripping of the handle 1'a. When the delivery is completed, the cart 12 moves backward to prepare for the next delivery.

The sampler delivered to the mounting device 16 is then delivered to the lance 20. In FIG. 2, the lance 20 includes a long hollow body, that is, an outer tube 20a, and a rod-shaped body gripping and releasing mechanism housed inside the outer tube 20a. (You may also use a hydraulic cylinder, electric actuator, etc.)
A rod 22 moves up and down by an air cylinder 21, a catch 24 releasably grips the sampler handle, and the rod 22 and catch 24 are connected to each other so that the rod 22 is gripped and released by the catch in response to the upward and downward movements of the rod 22. Link 23 for exercising
including. A guide 25 having a guide surface 25a that expands downward and a guide hole 25b connected to the guide surface 25a is provided at the lower end of the outer tube 20a. The guide surface 25a performs a centering action when the sampler handle is inserted, and the guide hole 25b fits with the sampler handle with small play to limit its lateral movement.

A pipe 26 for supplying pressurized gas, for example pressurized air, to the air cylinder 21 is provided at the upper part of the outer tube 20a;
A mounting portion 27 is provided for mounting the lance 20 to a lance lifting device to be described later.

FIG. 3 shows another embodiment. The rod 22' is connected via a link pin 23' to a catcher 28 which pivots about a hinge pin 29 in the form of a perforated plate or arm. A partially conical stopper 30 having a tapered surface corresponding to the guide surface 25a is fixed to the handle 1'a of the sampler to regulate the insertion position of the sampler. Rod 22'
When the catcher 28 is pulled upward, the catcher 28 is tilted, and its hole engages with the handle 1'a as shown in the figure, thereby gripping the sampler.

FIG. 4 shows an example of a sampling lance lifting device, in which the sampling lance 20 is
is attached to the guide frame 31 so as to be movable up and down,
It is raised and lowered by a lance raising and lowering motor 32,
The container portion 1b of the sampler 1 held by the lower end of the lance 20 is immersed in the molten metal. The piping 26 of the lance 20 is connected to a pressure source via a switching valve (not shown) via a hose 33 that allows the lance to move up and down, and the other end is connected to an air cylinder (not shown), which allows the sampler to be operated. Grasp and release.

The lance lifting device is operated under the control of a control device (not shown), and after immersing the container portion 1b of the sampler 1 attached to the lower end of the sampling lance into the molten metal to a predetermined depth, the sampling lance is raised to collect the sample. Collect. Sampler 1
Since the sampling lance and the sampling lance are correctly positioned, the immersion depth can be precisely regulated simply by controlling the operation of the lifting device.

FIG. 5 shows a detailed view of the ladle type sampler shown in FIG. Sampler 35 is a standard ladle 1
A rod-shaped body 36 having a stopper 30 tapering upward in correspondence with the guide surface 25a of the lance is fixed to the upper end of a long handle 1'a having a lower end 1'a. The rod-shaped body 36 is the catcher 24 of the lance.
An annular groove 36 constituting a gripping part to be gripped by
a to ensure grip by the catch of the lance. The stopper 30 has a diameter that projects outwardly beyond the lower opening of the guide surface 25a when the stopper 30 is attached to the lance as shown in FIG. prevent.

FIG. 6 shows a slug splitting fitting 40 that can be attached to the lance of the present invention. The slag splitting fitting 40 has a striking fitting 41 that can be immersed in the molten metal and has sufficient rigidity and strength to break the slag in order to break the slag on the surface of the molten metal, and the striking fitting 41 is replaceably attached to the lower end. A rod-shaped body 3 having a pipe-shaped portion and a gripping portion 36'a similar to the rod-shaped body 36 in FIG. 5 at the upper end.
6' and a support part 42 having a stop 30' similar to stop 30.

FIG. 7 shows a modification of the lance shown in FIG. The lance 50 includes an outer tube 50a that protects the internal mechanism from heat, dust, molten metal splash, etc., and includes a cylinder 21 inside, a rod 52 that moves up and down by the cylinder, and a link 5 connected to the rod 52.
3. A ladle-type sampler connected to the link 53;
A rod-like body gripping and releasing mechanism including a catcher 24 that releasably grips a rod-like body portion at the upper end of a slag splitting tool, a measuring holder (described later), etc. is accommodated. A gas hose 26 for supplying pressurized gas, such as pressurized air, to the cylinder 21 and a mounting bracket 27 for attaching the lance to the lance lifting device are also attached to the upper end of the outer tube 50a, similar to the lance shown in FIG. At the lower end of the lance, a guide 25 has a guide surface 25a that expands downward and a guide hole 25b connected to the guide surface 25a, similar to the lance shown in FIG.
is provided.

The outer tube 50a is made airtight, and a relay box 54 to which a gas hose 55 for supplying cooling gas is connected is provided at the upper part of the outer tube 50a. Inside the relay box 54, there is a lead wire 5 for measurement.
A connector 57 for 6 is also arranged. Relay box 54 communicates with the inside of outer tube 50a via opening 54a. Opening 54a constitutes a gas inlet. In the illustrated embodiment, the gas hose 55 has a measurement lead wire 56 inside, but the measurement lead wire and the gas hose may be connected independently to the relay box.

A member 52a having openings as passages for cooling gas and measurement lead wires is fixed to the lower end of the rod 52, and a link 53 is connected to this member 52a. In addition, the connector 5 connects the measurement lead wire of the measurement holder and the measurement lead wire 56.
8 is provided inside the lance, and the outer tube can be separated at this portion to facilitate inspection and assembly work. That is, the outer tube 50a includes an upper portion 60 having the relay box 54 and the mounting fittings 27, and a lower portion 61 having the guide 25.
It consists of a connecting part 62 that is attachably connected to an upper part 60 and a lower part 61, and the connecting part 62 is also provided with a link guide part 62a and a connector holding part 62b.

Figure 8 shows a holder for temperature and oxygen measurements;
FIG. 9 shows the holder attached to the lance of FIG. 7. The holder 160 includes a connector 161 to be inserted into the disposable temperature and oxygen measurement probe 70 (FIG. 9), a first pipe 162 connected to the connector 161 and extending upward, and a first pipe 162 connected to the connector 161 and extending upward.
A second pipe 63 having a larger diameter than the pipe 162;
The stopper 30 shown in Fig. 3 is fixed to the upper end of the pipe.
Similarly, a connecting portion 64 that engages with the guide surface of the lance and also acts as a stopper, a gas seal ring 65 provided in the annular groove of the connecting portion 64, and a rod-shaped body that is inserted into the guide hole of the lance. and an annular groove 66 formed in the pawl 66 and forming a grip portion to be gripped by the catcher of the lance.
a, a hole 67 provided in the pole 66 for introducing cooling gas into the inside of the holder 160, a connection part 68 located at the upper end of the pole 66 and connected to the connector 161, and a presser foot 69 for fixing the connection part 68. The lower end of the connector 161 is provided with an outlet hole for cooling gas.

FIG. 9 shows a state in use, in which a disposable sleeve-shaped measuring probe 70 (indicated by a chain line) is attached to the lower part of the holder 160 and immersed in molten metal. The upper end of the probe 70 is above the liquid level 71 of the molten metal, and the cooling gas coming out from the lower end of the connector 161 flows between the probe 70 and the holder 16.
0 and the first pipe 162, and is discharged to the outside above the liquid level 71.

In addition, a ladle-type sampler (Fig. 5) is attached to the lance.
When the slag splitting fitting (FIG. 6) is attached, the cooling gas is discharged to the outside through the gap between the guide surface 25a of the guide 25 and the stoppers 30, 30'.

As described above, according to the present invention, the lance can be combined with a ladle-type sampler, a holder for temperature and oxygen measurement, etc., and various operations can be performed with great ease.

[Brief explanation of drawings]

FIG. 1 is a schematic side view showing a part of the automatic temperature sample collection device, and FIG.
FIG. 3 is a partial vertical sectional view showing a modification of FIG. 2, FIG. 4 is a schematic side view showing the lance in FIG. 2 in use, and FIG. 5 is a diagram showing the present invention. FIG. 6 is a schematic diagram showing a slag splitting metal fitting, FIG. 7 is a longitudinal sectional view showing another embodiment of the lance according to the present invention, and FIG. FIG. 9 is a partial cross-sectional side view showing an example of a temperature and oxygen measurement holder; FIG. 9 is a partial cross-section side view showing the usage state of the temperature and oxygen measurement holder. 1, 1', 35: Ladle type sampler, 20, 2
5: Lance, 20a, 50a: Outer tube, 21: Cylinder, 22: Rod, 24: Catcher, 25:
Guide hole, 25a: Guide surface, 25b: Guide hole, 30, 30': Stopper part, 36, 36', 6
6: rod-shaped body, 36a, 36'a, 66a: gripping part,
40: Slag splitting fitting, 41: Impact fitting, 54:
Box, 55: Gas hose, 64: Connection part, 6
5: Gas seal ring, 68: Connection part.

Claims (1)

[Claims] 1 An outer tube, a rod-shaped body gripping and releasing mechanism provided in the outer tube and including a cylinder, a rod, a link, and a catch, and a guide provided at the lower part of the outer tube for receiving and guiding the rod-shaped body, and the guide is directed downward. The guide surface has a guide surface that expands when the rod is inserted, and a cylindrical guide hole that is connected to the guide surface. A molten metal temperature measuring and sampling device for measuring the temperature of molten metal, oxygen measurement, sample collection, slag splitting, etc., which is equipped with an automatic attachment/detachment lance that limits the molten metal temperature measuring device, comprising: a stopper portion formed in a tapered shape corresponding to the guide surface; and a grip portion inserted through the guide hole and gripped by the catcher;
Combination with sampling equipment.