JPH02156014A - Lance head cleaning device - Google Patents

Abstract

PURPOSE: To improve the safety of operation with a simple structure by setting a center pipe on the same line with a milling head and arranging a centering means, end stop and driving motor in the center pipe.

CONSTITUTION: In a cleaning device for a lance head 2, the center pipe 10 rotatably fixing the milling head 11 on the same line with the vertically movable milling head 11. The centering means 38 of a contact rod 4 is arranged near the upper end 10' of the center pipe 10 and the end stop 57 is arranged at the lower end 10" of the center pipe 10 and brought into contact with the contact rod 4. Further, the driving motor 35 is arranged in the center pipe 10 to drive the milling head 11. The end stop 52 is designed as a shock absorbing device and a center piston 60 elastically fitted to the milling head 11 is provided. By this constitution, the safety of the operation is maximized and the lance head 2 can fully be cleaned.

COPYRIGHT: (C)1990,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cleaning device for a contact rod-supporting lance head of a lance guided into a metallurgical vessel, in particular when the lance carries a measuring and/or sampling probe. , located in a position co-linear with the lance head, and
Concerning a lance contact rod supporting lance head cleaning device consisting of a milling head movable up and down relative to the lance head and the contact rod receiving the measuring and/or sampling probe and in contact with the lance head during the cleaning process. Suru.

(Conventional example and problem to be solved by the present invention) DE-C-
No. 2,364,911, a device for cleaning the end of a blowing lance is known, in which the blowing lance is surrounded by a hollow body which constitutes a cleaning head and is fixedly arranged, and in which the blowing lance is surrounded by a fixedly arranged hollow body. A hollow body finger is attached to contact the surface of the blowing lance and clean it. After the blowing process, the lance is raised and the cylindrical surface of the blowing lance slides along the hollow body fingers, thus completing the cleaning.

This type of apparatus suffers from the disadvantage that the rigidly fixed cleaning head is exposed to radiant heat or radiant heat emanating from the metallurgical vessel. Furthermore, this known device is only suitable for cleaning the cylindrical surface of the blowing lance, and it is not possible to clean the front end face of the blowing lance.

Particularly problematic are lances in which the measuring and/or sampling probe is carried and the lance head is immersed in the slag layer during the sampling or measuring operation.

For example, a lance, such as that used to determine the temperature or carbon content in molten steel, operates in unison with a one-way probe, and said probe is attached to a contact rod projecting from the front end face of the lance to make measurements. After execution, i.e. after being immersed in molten steel, it is removed from the contact rod. During such operations, the formation of slag or metal crust on the outside or front surface of the lance is unavoidable. In some cases, for example due to a poorly seated probe, slug or metal may enter between the front face of the lance and the front face of the probe that contacts this front face. If such a sheath is not removed, it will prevent a complete connection between the measurement leads between the probe and the contact rod when a new probe is installed, resulting in erroneous measurements.

From AT-B-381 795 a device of the type specified above is known which consists of a separate cleaning head with a milling head arranged on the upper side.

The cleaning head is mounted on a support that is movably mounted via an arm to a vertical guide on the cantilevered end of the carrier. In this known device, a milling head is arranged for reciprocating rotational movement by means of a pressure medium cylinder with a support hinged at one end and a cleaning head hinged at the other end via a double arm and a segmented rod. . The vertical movement of the milling head, accompanied by the vertical movement of the support, is achieved by a pressure medium cylinder provided at the cantilevered end of the carrier. In order to centrally grip the contact rod during rotational movement into the operating position, the segmented case of the cleaning head consists of a tongue-like centering projection. In order to guide the cleaning head located on the contact rod of the lance, a guide surface is provided on each case member, which is formed by an adjustment screw adjustable with respect to the contact rod and a semicircular arc-shaped plate. .

This known device makes it possible to carefully clean the surface of the lance head facing the molten steel in the metallurgical vessel. In particular, at least during the measurement process in which the lance head is immersed in a slag layer covering the surface of the molten metal, slag penetration is stopped between the measuring and/or sampling probe and the front face of the lance, and the sampling The front surface of the probe support lance can be kept clean. However, the device according to A, T-B381795 is a separate vibration
In particular, cleaning heads are relatively expensive and structurally complex.

The object of the invention is to eliminate these disadvantages and difficulties and to provide a dishing device as mentioned in the first place, which can be manufactured at low cost and which ensures the maximum possible operational safety and allows thorough cleaning of the lance head. There is a particular thing. In particular, the aim is to ensure that the milling head has a long service life.

(Means for Solving the Problems) According to the present invention, the object is to configure the cleaning device with a central pipe arranged in line with the milling head and having an upper end portion to which the milling head is rotatably fixed. This is accomplished by providing a centering means for the contact rod near the upper end of the central pipe, an end stop contacting the contact rod at the lower end of the central pipe, and a motor for driving the milling head in the central pipe. This allows the milling head to have a rotational movement in only one direction instead of a conventional oscillating movement, whereby the cutting teeth of the milling head are moved only in the cutting direction and damage is therefore suppressed. This significantly increases service life.

The central pipe allows the cleaning device to be positioned in a simple manner and the milling head to be precisely positioned by means of centering means in the desired operating position where the axis of the milling head and the axis of the lance are colinear. allow to be placed.

The end stop serves to define the range of the milling stroke, and the drive motor arranged in the central pipe ensures reliable transmission of the drive power during operation.

In order to prevent the milling head from rattling during the milling process, the end stop is designed as a shock absorber and has a central piston that is mounted resiliently against the milling head.

Preferably, the end stop has a conically shaped stop surface against the contact rod, thus improving the centering of the contact rod during the centering process.

According to a preferred embodiment, the centering means are arranged horizontally and have an axis fixed relative to the central pipe.
The third guide roller is arranged horizontally and has an axis adjustable in the axial direction of the central pipe.

Two guide rollers attachable to said central pipe can be precisely adjusted in position relative to the axis of the central pipe by means of adjustment means, and in particular the adjustable guide rollers are under the action of spring means. On the other hand, it is preferred that the central pipe be adjustable in the axial direction by means of a pressure medium cylinder. In addition to providing an optimal central position of the central pipe, the guide rollers serve to better guide the central pipe onto the contact rod.

According to a further preferred embodiment, the shock absorbing device is arranged in a pressure medium cylinder in which the piston is slidably and tightly guided and in which the cylindrical interior space is arranged with an adjustable guide roller via a hydraulic conduit. Consists of communicating hydraulic cylinders. For the forward movement of the piston, hydraulic oil is discharged from inside the cylinder and is injected through a hydraulic conduit into the pressure medium cylinder of the centering means before starting the milling process. This forces the adjustable guide roller against the contact rod, so that the contact rod is automatically centered in a position in line with the lance before starting the milling process.

In a particularly simple construction, a cantilevered housing is provided on the central pipe in the vicinity of the milling head, in which a drive motor designed as a gear motor is fixed, the gear motor being It is best to connect it to the milling head via a clutch and gear placed inside the case.

Preferably, the hydraulic conduit enters the gear case via a branch pipe with a pressure regulating release valve. If the adjusted hydraulic pressure is transmitted into the hydraulic conduit during the forward motion of the milling head,
The pressure relief valve is opened and hydraulic oil flows through the branch pipe into the gear case, lubricates the gear components, and is then collected via a recovery conduit into an oil sump connected to the hydraulic conduit.

According to a preferred embodiment, the central pipe has an external cross-section that approximately corresponds to the external cross-section of the measuring and/or sampling probe found by the probe manipulator, and the lance head cleaning device preferably has a probe manipulator. It is held by a cleaner manipulator that is movable in and out of the displacement orbit of the nupulator. Thereby, the probe manipulator traditionally used to transport the probe from the magazine to the lance can be used for the dexterity required during cleaning of the lance head. The central pipe may be provided with a torsional safety device in the contact area where it contacts the probe manipulator.

According to an even more preferred embodiment, the cleaner manifold has a cleaner sheet mounted on a cantilevered arm, the cleaner sheet having a lance head cleaning device mounted thereon. , and the height can be adjusted vertically.

According to this embodiment, the cleaning device can be moved to a position on the same straight line as the lance even by the cleaner machining machine, and the cleaning device can be moved onto the contact mound and the cleaning device can be moved forward for milling. , is achieved by upward movement of the cleaner sheet. In a preferred, particularly simple groove configuration, the cantilevered arms are
It consists of two members, one of which is adjustable in height relative to the other along a vertical guide rail attached to it.

In order for the cleaning device to maintain a position as stable as possible during the operating process, a stirrup is connected to the central pipe and the stirrup leg is located in the area provided on the opposite side of the drive motor with respect to the axis of the central pipe. , and a counterweight is provided in this area, thus ensuring the symmetry of the cleaning device in terms of airspace. In particular, in order to save space and simplify the construction, it is advantageous if the counterbalance is designed to accommodate an energy storage, in particular an accumulator.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, a measuring lance 1 has a contacting rod 4 on its lance head 2, which extends in the direction of an axis 3 and is provided with a tapered projection 5 at its free end for receiving a measuring probe. has.

During the measurement, the lance 1, together with a measuring probe (not shown) attached to the contact rod 4, is moved into the molten metal in a converter of a steel mill, for example, through the slag floating above the molten metal. The lance head 2 frequently comes into contact with the slag.

The lance head 2 has at its front end 6 an annular recess 7 into which the upper end of the measuring probe is inserted. As a result, it is possible to substantially prevent slag or molten metal from entering between the contact rod and the measuring probe. This annular recess 7 and the local area of the front end 6 of the lance head 2 adjoining it can completely receive a new measuring probe after carrying out a measurement, i.e. after removing the measuring probe from the contact rod. and to protect the contact between the contact site 8 at the lower end of the contact rod and the corresponding contact site of the measuring probe.
Do not allow external waves of the slab or molten metal to adhere.

For this purpose, a cleaning device 9, which can be mounted on the contact rod 4 from below, is movable laterally towards the lance l and the opposite side thereof. This cleaning device 9 consists of a central pipe 10 which coaxially surrounds the contact rod 4 during installation, ie co-linear with the axis of the lance. On 1jUlo' of the central pipe 10 with an annular cross-section, the milling head 11, which overlaps the central pipe 10, is rotatable and, moreover, fixed in the vertical direction. To milling, Do 11 is
An opening 1 in the upper part 15 of the gear case 16 adjacent to the front end 12 of the central pipe 10 and fixed to the central pipe 10
The leg part 18 of the milling head 11 has milling teeth 19 formed to match the shape of the circular recess 7 of the lance head 2. , is fitted into a recess 17 provided on the ``-'' side of the insert member 13.

The milling head 11 is firmly connected to the spur gear 21, for example by means of a screw 22, by being arranged in a straight line with the axis 20 of the central pipe 10 and at the same height as the insert piece 13. . The spur gear 21 is rotatably journaled by bearings 23 in the outer jacket 24 at the upper end 10° of the central pipe 10 and rests on the inner surface 25 of the lower part 26 of the gear case 16, thus preventing axial movement. It has become. A small gear 27 provided in a part of the gear case 16 extending outside the area of the spur gear meshes with the spur gear 21 . The rotating shaft 28 of the small wheel 27 extends parallel to the axis 20 of the central pipe,
A pinion shaft 29 is rotatably journaled in the gear case 16 by a bearing 30.31. The shaft 29 of the small wheel extends with its lower end 32 parallel to the central pipe 10 and reaches a cantilevered case part 33 having a flange 34, to which a gear motor 35 is attached via the flange. It is being The pinion is connected at its lower end 32 to the gear motor 3 via a clutch 36.
It is connected to the drive shaft 37 of No. 5. In order to achieve weight balance of the cleaning device 9, a stirrup 44 is fastened securely to the central pipe IO and the gear case 16, respectively, said stirrup 44 has two stirrup legs 45, and the central pipe has two stirrup legs 45. It extends to a region opposite to the shaft core 20 so as to be as far away from the gear motor 35 as possible, and a counterweight 46 is disposed in the region.

Centering means 38 are provided at the upper end 10' of the central pipe 10. This centering means 38 consists of two guide rollers 40 each disposed in a case 39 passing through the sleeve of the central pipe 10 and in contact with the contactor throat 4.
, whose respective axes 41 are central pipes 1
It is directed in a direction close to 0 and horizontally,
It is rotatably supported within the case 39 within a holding means 42 that can be replaced horizontally with respect to the axis 20.

The retaining means 42 can be fixed in position relative to the central pipe 10 by means of an adjusting screw 43, and the position of the guide roller 40 can be adjusted according to the diameter of the contact rod 4 before mounting the cleaning device 9 on the contact rod 4. be done.

Centering means 3 having a horizontally oriented axis 48
8 adjustable third guide rollers 47
It is pivoted at the level of two fixable guide rollers 40 on retaining means formed by a piston 49 of a pressure medium cylinder 50 passing through the cover of the O. All of the guide rollers 40,47 are distributed around the central pipe 10 at an angle of about 120 degrees. The screw 51 is screwed with its axial end into the holding means 49 of the adjustable guide roller 47 and is guided in a plate 52 which is rigidly fixed in the pressure-transmitting cylinder 50 .

The screw head is provided with a disc 51' closely guided along the cylindrical inner wall surface. A cup spring 53 is provided between the disc 51' and the plate 52, which pulls the retaining means 49 towards the plate 51', and these adjustable guide rollers 47 are brought into contact before starting the cleaning process. It is held at a constant distance from the rod 4. During the milling process, the adjustable guide roller 47 is hydraulically pressed against the contact rod 4 by driving the pressure-mediated cylinder 5, the details of which will be described below.

In the intermediate region 10'' of the central pipe IO, located below the centering means 38, a torsional safety means 54, such as a feather key, and a retaining ring 55 are provided. At the lower end 10'' of the central pipe 10, a contact is provided. Protrusion 5 of rod 4
A hydraulic cylinder 56 of a shock absorber 57 is flanged, extending over almost the entire area. The cylinder head located at the lower end of the hydraulic cylinder 56 is formed by a hat-shaped stop nut 58 fixed to the cylinder jacket, and the bottom 59 of the stop nut has a recess in the center and an annular ring guided within the hydraulic cylinder 56. It forms a stopping place for the piston 60.

The annular piston 60 has a communicating hole 61 which widens in its lower region 61', which is reached by the projection 5 of the contact rod 4. At the upper end of the communication hole 61 there is provided a centering means 62 designed as a conical stop surface for the contact rod 4, said centering means having a corresponding opposite stop surface in the transition region to the projection. It has a stop surface 63. Bottom 59 of stop nut 58
Externally and internally guiding sleeves 64, 65 for the annular piston 60 are concentrically arranged and fixed and are in close contact with the outer and inner circumferential surfaces, respectively. The annular piston 60 is supported on the upper front end 67 of the inner guide sleeve 64 by means of a pressure spring 66 in the enlarged lower region 61° of the communication bore 61, so that the conical stop surface 62 of the annular piston 60 comes into contact. It is pressed against the reverse stop surface 63 of the rod 4. In this way, the annular piston 60 is mounted resiliently against the milling rod 11.

The cylindrical jacket of the hydraulic cylinder 56 is connected to the central pipe 10
It consists of a vertical hole 67 extending parallel to the axis 20, and then above the vertical hole a horizontal hole 68 constituting an oil groove leads radially outward. A hydraulic conduit 71 connects the annular internal space 70 of the hydraulic cylinder 56 with the internal space of the pressure medium cylinder 50 of the centering means 38 by conduit means.
It communicates with the oil groove 69. Further, the hydraulic conduit 71 reaches the inside of the gear case 16 via a branch pipe 72, and the branch pipe 72 has a pressure release valve 7 regulated by a pressure measuring device 73.
4 is provided. An oil supply pipe 76 with a check valve 75 disposed on the outside and an oil reservoir 77 connected to the hydraulic conduit 71 is connected to the oil supply pipe 76 . Oil i1? ? 77 is connected to the internal space of the gear case 16 via a recovery pipe 78 by conduit means.

According to FIG. 2, which schematically shows an embodiment, the cleaning device 9 is held by a cleaner manipulator 79 arranged on a platform. The cleaner manipulator 79 is provided with a two-member arm 82 that cantilevers a sleeve 81 rotatable about a rotation axis 80 in the radial direction. is rotatable by means of a hinged adjustment cylinder 83 through a lever 84 rigidly fixed to the sleeve 81, so that the cleaning device 9 can be moved along an arcuate trajectory of movement 85. The outer member 86, which supports the inner member 9 and constitutes the free end of the cantilevered arm 82, is guided along a guide rail 89 rigidly fixed to a beam 88 extending downwardly of the inner member 87. It can be raised and lowered up and down relative to the member 87. Vertical displacement is accomplished by a lifting cylinder 90 hingedly supporting a vertical beam 88 at one end and the outer member 86 of the arm 82 at the other end. (See the cleaner manipulator shown in various positions in the figure).The cleaning device 9 is mounted on the outer member 86 of the cantilevered arm 82.
It is supported by an overlying cleaner sheet 91 and lifted from the same outer member.

On the platform, the probe manipulator 92 is located next to the cleaner manipulator 79.

Probe manipulator 9 schematically illustrated in FIG.
2 is similar to the device for exchanging measurement or sample collection probes known from the late P-B 0 113653. The probe manipulator 92 is arranged on a platform and has a column 94 that can rotate about a shaft 93 as a fulcrum.
Consisting of A cantilevered console 95 is fixed to a post 94 to allow vertical displacement and has a grab 96 at its free end.

The grab 96 is generally useful for taking out a probe from the magazine M shown in dashed lines and transporting the probe to the lance l, or for removing said probe l from the lance 1, which probe is attached to a plurality of pairs of the grabs 96. It is held by a tongue piece 97.

As is clear from FIG. 2, the grab 9G can also move on the arcuate trajectory of the motion 98, however, its trajectory radius is larger than that of the cleaning device motion 85. The two trajectories of motion 85.98 are at intersection 9
They cross each other at 9.

The operation of the cleaning device will be explained below.

The grab 96 of the probe manipulator 92 follows the trajectory of the movement 85 of the cleaner manipulator 79, that is,
- It is rotated and moved to the receiving position A shown by the dotted chain line, and at this time, the axis 100 passing through the circular hole of the pair of jaws 97 is located at the intersection 99. When the pair of jaws 97 is opened, the cleaning device 9 is rotated from its stationary position B, shown in solid lines, to the delivery position C, shown in dash-dotted lines, where the axis 20 of the central pipe follows the trajectory of movements 85 and 98. and overlaps with the axis 100 passing through the circular hole of the pair of jaws 97. In this case, the cleaning device 9 and the grab 9
The height position of 6 is selected such that the middle region 10'' of the central pipe 10 is positioned at the height of the open jaw pairs 97, which each hold the central pipe 10 at the height of the torsional safety means 54. encircle (see the tongue jaw indicated by the dash-dotted line in Figure 1).

The central pipe IO, whose outer diameter 101 in the central region 10" corresponds approximately to the diameter of the probe, is gripped by a pair of jaws 97. At this time, the pair of jaws 97 is completely centered, does not grip the pipe, but each of the tongue jaws It is surrounded with a gap for a torsion safety means 54 located on the free end.A retaining ring 55 rests on the upper bear of the tongue jaw and prevents the central pipe 10 from falling out. , the cleaning device 9 is a probe manipulator 9
Lift up the console 95 of 2 and remove the cleaner sheet 9.
By lowering 1, the cleaner manipulator 79
The glove 96 is rotated together with the cleaning device 9 to an operating position below the lance head 2, shown in solid lines, where the axis 20 of the central pipe 10 is aligned with the lance 1. Overlaps axis center 3. (For brevity, only the probe manipulator 92 is shown without the lance 1 and cleaning device 9 in the operating position of FIG. 2.) Next, the console 95 of the probe manipulator 92 is shown. It is moved upward and the central pipe 10 is attached to the contact rod 4. The milling rod 11 is placed at an appropriate position below the lance head 2 (approximately 80 degrees of the total stroke).
%), the probe manipulator 92 switches to milling advance at the lower advance speed after the gear motor 35 is started. The clumps of slag and metal adhering to the lance head 2 are carefully removed by the milling teeth.

During the milling process, the contact throat 4 pushes against the stop face 62 of the annular piston 60 of the hydraulic cylinder 56 with its reverse stop ring 63. Thereby, the annular piston 60 is moved downwardly against the action of the compression spring 66 until the annular front end 103 of the piston abuts the bottom 59 of the stop nut 58. In this way, milling head 1
The forward movement of 1 is the distance from the front surface 103 of the piston to the bottom 59 of the stop nut 58! 4102.

As the annular piston 60 moves downwards, hydraulic oil is forced out of the annular interior space 70 of the hydraulic cylinder 56 and the pressure medium cylinder 50 of the centering means 38 is actuated via the hydraulic conduit 71, causing the hydraulic oil to flow back. Prevention valve 7
5 prevents the oil from flowing back into the oil reservoir 77. In this way, the adjustment guide roller 47 is pressed against the contact rod 4. As the annular internal space 70 of the hydraulic cylinder 56 becomes smaller, the pressure of the hydraulic oil increases until it reaches the maximum pressure regulated by the pressure regulator. Thereafter, the pressure release valve 74 in the branch pipe 72 is opened, and hydraulic oil flows into the space of the gear case 16.

Since the piston front surface 103 of the annular piston 60 of the hydraulic cylinder 56 contacts the bottom 59 of the stop nand 58, the advancement of the probe manipulator 92 and the gear motor 35 are preferably automatically stopped by an end switch. . The probe manipulator 92 lowers the cleaning device 9 below the contact rod 4 and is rotated into the receiving position. When the cleaning device 9 is moved by the cleaner manipulator 79,
The cleaner manipulator 7 is rotated to the rest position B after the blow manipulator 92 releases the cleaning device 9 by opening the pair of tongue jaws 97 .

According to yet another embodiment, the cleaning device 9 is rotated by the cleaner manipulator 79 to a position where the axis 3 of the lance 1 overlaps with the axis 20 of the central pipe 10, and the cleaner manipulator It is also possible to fit the cleaning device 9 onto the contact rod 4 with the aid of seven rotors.

In this case, the stroke length of the lifting cylinder 90 must at least correspond to the length of the contact rod 4.

It is also possible to configure the cleaning device independently of any external energy supply. All the components of the hydraulic system may be arranged together with the cleaning device in one frame.

The power source may be replaced by a battery or other energy storage means, in which case the power source will act as a counterweight.

(Effects of the Invention) As is clear from the above explanation, the lance head cleaning device according to the present invention not only can be manufactured at a lower cost and has a simpler structure than the conventional example, but also has operational safety. This has the effect of completely cleaning the lance head and extending the life of the milling head.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention,
1 is a detailed partial cross-sectional view of the cleaning device, FIG. 2 is a schematic plan view of the cleaning device in various operating positions, and FIG. 3 is a side view taken in the direction of the arrow 1 in FIG. 2. 4j? Patent applicant Hoesto Albin Industriean Lagenbau Gesellschaft Mitsut Beschlenkteruhftsung Patent attorney Aoyama Hogai 1 person

Claims (17)

[Claims] (1) During the cleaning process, a measuring and/or sample collection probe is placed in contact with and in line with the lance head (2), and is Receive contact rod (
Milling head (11) that can move up and down relative to 4)
a lance (1) which is placed in a metallurgical vessel, in particular a lance (1) carrying a measuring and/or sample collection probe;
1) contact rod (4) supporting lance head (2)
), the milling head (
11) a central pipe having an upper end disposed in line with the central pipe and to which the milling head is rotatably fixed, contact rod centering means being provided near the upper end (10') of the central pipe; End stop (
57) is provided at the lower end (10'') of the central pipe, said end stop being in contact with the contact rod, and that a drive motor (35) driving the milling head (11) is arranged in the central pipe (10). Characteristic lance head cleaning device. 2. Lance head according to claim 1, characterized in that the end stop is designed as a shock absorber (57) and has a central piston (60) elastically attached to the milling head. cleaning equipment. (3) The lance head cleaning device according to claim 1 or 2, characterized in that the end stop (57) has a conical stop surface in contact with the contact rod (4). (4) The centering means (38) has a fixed axis (41) arranged horizontally with respect to the central pipe, and has two guide rollers (40) supported to rotate.
), also oriented horizontally with respect to the central pipe,
Lance head cleaning according to one or more of claims 1 to 3, characterized in that it is formed by a third guide roller having an axis adjustable in the direction of the axis (20) of the central pipe (10). Device. (5) The two guide rollers (40) fixed to the central pipe can be accurately positioned with respect to the axis (20) of the central pipe by adjusting means (43). Lance head cleaning device as described. (6) Claim characterized in that said adjustable guide roller (47) is adjustable in the axial direction of the central pipe (10) by means of a pressure medium cylinder (50) against the movement of a spring means (53). Item 5. The lance head cleaning device according to item 4 or 5. (7) The shock absorbing device (57) is composed of a hydraulic cylinder, in which the piston (60) is slidably and tightly guided, and the cylindrical internal space (70) is a hydraulic conduit. (71), a pressure medium cylinder (
7. The lance head cleaning device according to claim 6, characterized in that the lance head cleaning device is connected to 50). (8) A cantilevered case (16, 33) is provided on the central pipe (10) in the vicinity of the milling head (11), to which a drive motor (35) designed as a gear motor is fixed. 8. The lance head cleaning device according to claim 1, wherein the lance head cleaning device is characterized in that: (9) The lance according to claim 8, wherein the gear motor (35) is connected to the milling head via a clutch (36) and gears (21, 27) arranged in the case (16). Head cleaning device. (10) The hydraulic conduit (71) passes through a branch pipe (72) having an adjustable pressure release regulating valve (74) to the gear case (
16) Lance head cleaning device according to one or more of claims 7 to 9. (11) The central pipe (10) is characterized in that it has an external crossing area that can be detected by the probe manipulator (92) and corresponds approximately to the external crossing area of the measurement and/or sample collection probe. Claim 1
10. The lance head cleaning device according to one or more of items 10 to 10. (12) The lance head cleaning device (4) has a replacement trajectory (98) for the probe manipulator (92).
The lance head cleaning device according to claim 11, wherein the lance head cleaning device is held by a cleaner manipulator that is movable within and outside the same trajectory. 13. Lance head cleaning device according to claim 11 or 12, characterized in that the central pipe (10) is provided with a torsional safety device (54) in the contact area where it contacts the probe manipulator. (14) The cleaner manipulator (79) has a cleaner sheet (91) provided on the arm (82) supported in a cantilever, the lance head cleaning device is disposed on the sheet, and the cleaner sheet (91)
Lance head cleaning device according to one or more of the preceding claims, characterized in that the vertical height of the lance head is adjustable. (15) said cantilevered arm (82) is composed of two members, one member (86) supporting the other member (87) along a vertical guide rail (89) attached thereto;
) Claim 1 characterized in that the height can be adjusted with respect to
4. The lance head cleaning device according to 4. (16) A stirrup (44) is connected to the central pipe (10) such that the stirrup leg (45) faces the drive motor (35) with respect to the axis (20) of the central pipe (10). In addition to reaching the area allocated to
Lance head cleaning device according to one or more of the preceding claims, characterized in that a counterweight (46) is provided in the area. 17. Lance head cleaning device according to claim 16, characterized in that the counterweight (46) is designed as an energy storage means, in particular an accumulator.