JP3060063B2 - Grounding equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grounding device suitable for the following works. Grounding work after installing telephone poles. Construction work that requires drilling holes that are thin and deep in the stratum.

[0002]

2. Description of the Related Art Heretofore, this type is as follows. 1. Driving by hitting with a breaker. 2. Excavation with construction equipment, especially power shovels. 3. Drilling with an auger drill. It has a helically protruding thrust and cutting blade, and drills holes only with rotary pushing force.In general, most types use a hydraulic motor, such as a pile driving guide hole or when installing a utility pole The hole has a minimum diameter of φ100. 4. Drilling with a crawler drill. It is a device that can make a round hole in a free direction.It is generally used for blasting work such as dynamite.Simultaneous use of oil pressure and air or oil pressure and electricity generation are available. The deepest method is possible by the method of excavating while gushing water.

[0003]

The above-mentioned prior art has the following problems. 1. When a breaker or the like is used, considerable vibration and noise are generated, workability is poor, and it takes time. When a breaker was used, in the case of a firm stratum, re-implantation occurred in the vicinity. 2. When using a power shovel, a large power shovel is required to excavate deeply, and the place is limited. Also, it took time and money. 3. When using an auger drill, drilling cannot be performed deeply and is limited to soft strata. In addition, it takes time, the bending loss rate of the drill body is high, and the cost increases. 4. The problems of crawler drilling are as follows. A. Large equipment is required, making it difficult to work in narrow places. B. Because air or water is used, it scatters around and is dangerous.

[0004] The present application has been made in view of such problems of the prior art, and an object thereof is to provide the following. 1. Drill holes by rotation with minimal vibration. 2. Uses the deepest extendable guide rod. 3. The use of hydraulic pressure can reduce noise. 4. A bit (cutting tool) that can withstand a strong stratum was selected. 5. Make a hole with a mini excavator that is not limited to a location. 6. Work can be performed without using equipment such as compressors and generators. 7. Vibration, rotation and press-fitting can be individually operated such as when drilling holes. 8. A drilling method can be performed in which the shaving powder does not scatter on the ground. 9. The earth insertion tool that enables the insertion of the earth wire etc.
It has a semi-fixed structure. 10. Since the excavated area can be minimized, an increase in cost can be suppressed in the case of pavement road surface treatment and the like.

[0005]

Means for Solving the Problems In order to achieve the above object, the present invention is as follows. It is composed of a main body base frame 2, a lifting frame 3, an excavation lot 4, a ground insertion lot 5, and a fall prevention device 6. The main body base frame portion 2 is composed of a vertical frame 2A, a lifting / lowering chain 2B, and a grounding base plate 2C. The lifting / lowering chain 2B is vertically long, and its upper and lower ends are connected to the center positions of the upper and lower ends in the vertical frame 2A. The ground base plate 2C includes a horizontal plate 2C1 connected to the lower end of the vertical frame 2A1 in the forward direction, a lot elevating opening 2C2 opened in the center of the horizontal plate, and a left and right side of the horizontal plate. B. Consists of left and right small walls 2C3 standing upright, and spanner locking grooves 2C31 formed on the right small wall 2C3. The lifting frame part 3 is configured in a box-like shape,
A guide roller 3C that rotates while being locked to the vertical frame 2A is attached to the elevating frame portion, and a sprocket 3D meshing with the elevating chain 2B is disposed in the elevating frame portion 3. Is provided with a drill rotation motor 3D4, a drill connection metal fitting 3D5 is connected to the drill rotation motor, and vibration motors 3D6 are attached to the left and right portions of the lower part of the lifting frame portion 3, respectively. The fall prevention device 6 includes an arm 6A protruding above the elevating frame 3 and a hook 6B swinging in the left-right direction at the lower end portion of the arm. The hook protrudes above the vertical frame 2A. D. It is configured to engage and disengage with the small projection 6E provided. The excavating lot 4 includes a lot 4A and a sleeve 4B.
E. and a bit 4C, the lot is configured to be freely added by using a sleeve, and the bit 4C is configured to be removably screwed to the lot. The ground insertion lot part 5 is composed of a lot 5A, a sleeve 5B, and a ground insertion tool 5C. The lot is configured to be freely added by using a sleeve, and is a tool body configured in a bullet-like shape of the ground insertion tool 5C. The upper end of 5C1 is a device for grounding work which is configured to be detachable from the lot and has a groove 5C3 for locking a ground wire from the side surface to the lower surface of the tool body 5C1.

In this case, the following configuration can be adopted. First. It is composed of a main body base frame 2, a lifting frame 3, an excavation lot 4, a ground insertion lot 5, and a fall prevention device 6. The main body base frame portion 2 includes a vertical frame 2A, a lifting / lowering chain 2B, and a grounding base plate 2C. The vertical frame 2A has left and right edges on the left and right edges of the front plate 2A11 in the vertical frame 2A1 formed in an H-shaped steel shape. A vertical mounting pipe 2A12 is attached to the vertical frame 2A1, and a mounting bracket 2A2 for the construction machine 8 is attached rearward substantially at the center of the height of the vertical frame 2A1, and the lifting / lowering chain 2B is configured to be vertically long. The ground base plate 2C is connected to the center positions of the upper and lower ends of the front plate 2A11 in the vertical frame 2A.
Plate 2C1 connected to the lower end of the horizontal direction toward the front, and a lot elevating opening 2C2 opened at the center of the horizontal plate
B., left and right small walls 2C3 standing upright on the left and right sides of the horizontal plate, and spanner locking grooves 2C31 formed in the right small wall 2C3; The elevating frame part 3 includes a vertical plate 3A parallel to the vertical frame and left and right vertical side walls 3 connected to the left and right sides of the vertical plate.
B, 3B, and is formed in a box-like shape. The vertical pipe 2A1 in the vertical frame 2A is provided at the four corners of the vertical plate 3A.
A guide roller 3C that rotates while sandwiching the frame 2 is attached, so that the elevating frame part 3 can be moved up and down reliably along the vertical frame 2A. Meshing sprockets 3D are provided, idle sprockets 3D11 are provided above and below the sprockets 3D to help mesh the elevating chains 2B, and upper and lower horizontal plates 3D3 are provided below the elevating frame portion 3. A drill rotation motor 3D4 is disposed downward using the upper horizontal plate 3D3, and a drill connection fitting 3D5 is attached to the drill rotation motor.
Are connected to each other, and the drill connection fitting 3D5 penetrates through the lower horizontal plate 3D3 and protrudes downward. Vibration motors 3D6 are attached to the left and right of the lower portion of the lifting frame 3, The fall prevention device 6 is a vertical plate 3A of the lifting frame 3.
An arm 6A protruding above the upper side of the arm, a hook 6B connected to a lower end portion of the arm by a pin P in the front-rear direction, and swinging in the left-right direction, and extended between the right end of the hook and the upper end of the arm. And a wire rope 6D connected downward to the right end of the hook, and the hook is configured to engage and disengage with a small protrusion 6E protruding above the vertical frame 2A, D. The excavating lot 4 includes a lot 4A and a sleeve 4B.
The lot 4A has upper and lower insertion screws 4A11, 4A at upper and lower ends of the lot body 4A1.
A12 is formed, and wrench notches 4A13 are formed on both sides of the upper and lower portions of the side wall of the lot body. When connecting the lot body up and down, the sleeve 4B is provided below the lot body located above. Insertion screw 4A1
2 and the upper insertion screw 4A of the lower lot body
E.11 is configured to be screwed, and the bit 4C is configured to be removably screwed to the lower insertion screw 4A12 in the lot 4A; The ground insertion lot unit 5 is composed of a lot 5A, a sleeve 5B, and a ground insertion tool 5C.
In A, upper and lower insertion screws 5A11 and 5A12 are formed at the upper and lower ends of the lot body 5A1, and wrench notches 5A are formed on both sides of the upper and lower parts of the side wall of the lot body.
13 are formed, and when the lot body is connected up and down, the lower insertion screw 5A12 of the upper lot body and the upper insertion screw 5A11 of the lower lot body are screwed together when the lot body is vertically connected. The grounding insertion tool 5C is provided with a screw portion 5C2 which is attached to and detached from the insertion screw 5A12 below the lot 5A on the top surface of the tool body 5C1 formed in a bullet shape, and from the side surface to the lower surface of the tool body 5C1. This is a device for grounding work in which a groove 5C3 for locking a ground wire is cut.

Second. In the excavation lot part 4, after using the bit 4C, the earth insertion tool 4D having the same structure as the earth insertion tool 5C is attached to the lot 4A for use.

The method of use is as follows. 1. Attach the grounding equipment to the construction machine. 2. Connect the hydraulic hose on the grounding equipment side to the construction machine side. 3. In the case of excavation work A. Screw the drilling lot into the drill fitting. In this case, a bit is screwed in advance into a drilling lot. B. Raise the grounding equipment by hydraulic operation and manually lower the wire rope of the fall prevention device to release the fall prevention. C. While the excavating lot is being rotated by the hydraulic motor, the elevating motor is driven to lower the grounding device and excavate. D. Depending on the situation at the site, such as the boulder ground, the vibration motor is driven by hydraulic pressure and excavation is performed at the same time. E. FIG. When the grounding device reaches the lowering limit, the handle S1 of the wrench S locked to the drill connection fitting 3D5 is locked in the groove for locking the wrench, and then rotated in reverse by a hydraulic motor to make a lot for drilling. Remove from the drill connection bracket. In this case, the excavation lot is buried underground. In this case, it is natural that the spanner may be a wrench. F. Raise the device for grounding work and set the device to fall prevention by operating the wire rope of the fall prevention device. G. FIG. Screw a drilling lot separately prepared to add to the drill connection bracket, release the fall prevention device by operating a wire rope, and lower the grounding device and bury it in the ground. Screw the lot to add to the existing drilling lot. H. The above work is repeatedly excavated. I. At the time of excavation of about 10 m, the whole lot for excavation is extracted in the reverse process. 4. In case of earth insertion work A. Screw the lot for earth insertion into the drill connection bracket. In this case, the earth insertion tool is previously screwed into the earth insertion lot. The ground wire 7 is a groove 5C for locking the ground wire of the ground insertion tool.
3 and the tip 7A of the ground wire 7 is bent outward and the ground wire is about 10 m without rotating the ground insertion lot into the hole previously drilled by the drilling lot. Let it be buried. That is, since the hole once excavated collapses when rotated, it is inserted without rotation. B. At the time of filling to the lowest end, the whole lot for earth insertion is extracted in the reverse process, so that the bent front end portion of the earth wire is not hooked on the inner wall of the excavated hole, so that the structure does not come off. Thereafter, the grounding resistance is measured, and if it is a specified value, earth and sand are injected into the excavation hole to complete the operation. When the ground resistance does not reach the specified value, the excavation is further performed. However, if the ground value slightly deviates from the specified value, the excavation can be performed within the specified value by injecting a ground resistance reducing agent.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. Reference numeral 1 denotes an apparatus for grounding work according to the present invention, which comprises a main body base frame 2, an elevating frame 3, an excavation lot 4, an earth insertion lot 5, and a fall prevention device 6. A. The main body base frame portion 2 includes a vertical frame 2A, a lifting / lowering chain 2B, and a grounding base plate 2C. The vertical frame 2A has left and right edges on the left and right edges of the front plate 2A11 in the vertical frame 2A1 formed in an H-shaped steel shape. The vertical bracket 2A2 for the construction machine 8 is attached rearward at substantially the center of the height of the vertical frame 2A1. The elevating chain 2B is vertically long, and its upper and lower ends are connected to the center positions of the upper and lower ends of the front plate 2A11 in the vertical frame 2A. Grounding base plate 2C
Is a horizontal plate 2C1 connected to the lower end of the vertical frame 2A1 in the forward direction, a lot lifting / lowering opening 2C2 opened in the center of the horizontal plate, and an upright standing on the left and right sides of the horizontal plate. It comprises left and right small walls 2C3 and spanner locking grooves 2C31 formed in the right small wall 2C3. The wrench locking groove 2C31 is used to hook the handle S1 of the wrench S used to loosen the lot.

B. The elevating frame portion 3 is composed of a vertical plate 3A parallel to the vertical frame and left and right vertical side walls 3B, 3B connected to the left and right sides of the vertical plate, and is configured in a box shape. At four corners of the vertical plate 3A, guide rollers 3C that rotate while sandwiching the vertical pipe 2A12 of the vertical frame 2A are attached.
It is configured to ascend and descend along A. A sprocket 3D meshing with the elevating chain 2B is provided in an upper portion in the elevating frame portion 3, and an idle sprocket 3D11 for assisting meshing of the chain 2B is provided above and below the sprocket 3D. .
The elevating motor 3D12 is connected to the sprocket 3D. An upper and lower horizontal plate 3D3 is stretched at a lower portion in the lifting frame portion 3, and a drill rotation motor 3D4 is disposed downward by using the upper horizontal plate 3D3. The drill rotation metal 3D5 is attached to the drill rotation motor. Are connected. The drill connection fitting 3D5 penetrates the lower horizontal plate 3D3 and protrudes downward. Vibration motors 3D6 are attached to the left and right of the lower part of the lifting frame unit 3.

C. The fall prevention device unit 6 includes an arm 6A protruding upward from an upper side of the vertical plate 3A of the lifting frame unit 3,
A hook 6B connected to a lower end portion of the arm by a pin P in the front-rear direction and swinging in the left-right direction; a coil spring 6C stretched between the right end of the hook and the upper end of the arm;
A wire rope 6D is connected to the right end of the hook downward, and the hook is configured to engage and disengage with a small protrusion 6E protruding above the vertical frame 2A.

D. The excavating lot unit 4 includes a lot 4A,
It is composed of a sleeve 4B and a bit 4C. In the lot 4A, upper and lower insertion screws 4A11 and 4A12 are formed at the upper and lower ends of the lot body 4A1, and wrench notches 4A13 are formed on both sides of the upper and lower portions of the side wall of the lot body. Lot 4A is made up of pipes. When connecting the lot bodies up and down, the sleeve 4B is configured such that the lower insertion screw 4A12 of the lot body located above and the upper insertion screw 4A11 of the lot body located below are screwed together. Bit 4
C is configured to be detachably screwed to the lower insertion screw 4A12 in the lot 4A.

E. Lot 5 for earth insertion
A, a sleeve 5B, and a ground insertion tool 5C. In the lot 5A, upper and lower insertion screws 5A11 and 5A12 are formed at the upper and lower ends of the lot body 5A1, and wrench notches 5A13 are formed on both sides of the upper and lower portions of the side wall of the lot body. The lot 5A is formed of a hexagonal prism and is thinner than the lot 4A. When connecting the lot bodies up and down, the sleeve 5B is used to insert the lower insertion screw 5A1 of the lot body located above.
2 and the upper insertion screw 5A of the lower lot body
11 is screwed. The ground insertion tool 5C is provided with a screw portion 5 that is attached to and detached from an insertion screw 5A12 below the lot 5A on the top surface of the tool body 5C1 formed in a bullet shape.
C2 is provided, and a groove 5C3 for locking the ground wire is formed from the side surface to the lower surface of the tool body 5C1.

In addition, in addition to the above, in the excavating lot part 4, after using the bit 4C, the earth insertion tool 5C is used.
Lot 4D having the same structure as
A can be used.

[0015]

Since the present invention is configured as described above, the following effects can be obtained. 1. It is possible to drill the smallest diameter and deepest holes in a wide variety of strata. 2. It can be attached to and detached from general-purpose mini excavators, etc., and can also be operated by means other than hydraulic pressure (air, electric). Also, all operations using only hydraulic pressure are possible. 3. After the hole is opened, a thin and long object such as an earth wire can be press-fitted to the tip of the hole, so that the bottom can be reliably reached. After the press-fitting of the ground wire or the like, if the ground resistance has reached the specified value, the injection of earth and sand is completed. In this case, if the specified value of the ground resistance is not reached, the ground and the ground wire are fixed by a ground stabilizer or the like to stabilize. As a result, it is possible to ensure a specified ground resistance value. 4. Since it is a construction machine (a general-purpose excavator), it can be moved anywhere (on uneven terrain or soft terrain) and work can be performed immediately. 5. Equipment such as a compressor and a generator is not required, and the cost can be reduced quickly. 6. Vibration and rotation can be freely changed and controlled depending on the geology, so it can be used for all types of strata. 7. If it is a hole that once penetrated, press-fit even if it is closed with something,
Earth wires can be easily inserted by vibration. 8. Since the shavings do not scatter on the ground,
Also, it does not affect the surrounding environment. 9. According to the third aspect, both excavation work and insertion work can be performed by exchanging the bit 4C and the earth insertion tool 4D. Also in this case, it is possible to penetrate all strata, rocks and the like only by rotation and press-fitting without using vibration.

[Brief description of the drawings]

FIG. 1 is an overall side view.

FIG. 2 is an enlarged perspective view of a main part.

FIG. 3 is a side view with a part cut away.

FIG. 4 is a side view mainly showing a lot part.

FIG. 5 is a longitudinal sectional view illustrating an excavation state.

FIG. 6 is a longitudinal sectional view illustrating a state in which a ground wire is inserted.

FIG. 7 is an exploded perspective view of a drilling lot.

FIG. 8 is an exploded perspective view of a ground insertion lot.

FIG. 9 is an enlarged perspective view of a bit portion viewed from a lower surface direction.

FIG. 10 is an enlarged perspective view of a ground insertion tool portion viewed from a lower surface direction.

FIG. 11 is a perspective view illustrating a state in which a ground insertion tool is used in a ground insertion lot.

FIG. 12 is an enlarged perspective view of a main part of the fall prevention device.

FIG. 13 is an enlarged perspective view of a main part explaining a lot separating operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Grounding equipment 2 Body base frame part 3 Elevating frame part 4 Excavation lot part 5 Ground insertion lot part 6 Fall prevention device part

Continuation of the front page (72) Inventor Terumi Furuya 357-1 Oya, Rankoshi-cho, Isoya-gun, Hokkaido (56) References JP-A-6-333661 (JP, A) JP-A-6-108768 (JP, A) Kaihei 7-11789 (JP, U) Shokai 61-23338 (JP, U) Shoko 7-24421 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 43 / 00,4 / 66 E21B 6/00

Claims (3)

(57) [Claims] The apparatus comprises a main body base frame (2), a lifting frame (3), an excavation lot (4), a ground insertion lot (5), and a fall prevention device (6). The main body base frame (2) is
A), an elevating chain (2B), and a grounding base plate (2C), and the elevating chain (2B) is configured to be vertically long,
The upper and lower ends are connected to the center positions of the upper and lower ends of the vertical frame (2A), and the grounding base plate (2C) is connected to the vertical frame (2A).
A horizontal plate (2C) connected to the lower end of 1) in the forward direction
1), a lot elevating opening (2C2) opened in the center of the horizontal plate, left and right small walls (2C3) standing upright on the left and right sides of the horizontal plate, and a right small wall (2C3). 2C3), the spanner groove (2C31) opened in B. The elevating frame part (3) is formed in a box shape, and a guide roller (3C) that rotates while being locked to the vertical frame (2A) is attached to the elevating frame part. Is provided with a sprocket (3D) meshing with the lifting chain (2B), and the lifting frame part (3) is provided with a drill rotation motor (3D).
D4) is provided, and a drill connection fitting (3D5) is connected to the drill rotation motor, and the lifting frame unit (3) is provided.
A vibration motor (3D6) is attached to the left and right portions of the lower part of C. The fall prevention device (6) includes an arm (6A) protruding above the lifting frame (3) and a hook (6B) swinging in the left-right direction at the lower end portion of the arm. Is configured to engage and disengage with a small projection (6E) projecting above the vertical frame (2A); The excavating lot part (4) is composed of a lot (4A), a sleeve (4B), and a bit (4C). The lot is configured to be freely added using a sleeve, and the bit (4C) is attached to and detached from the lot. E. configured to be freely screwed; Lot part (5) for earth insertion is lot (5A)
, A sleeve (5B), and a ground insertion tool (5C). The lot is configured to be freely added using a sleeve, and a tool body (5C1) formed in a bullet shape of the ground insertion tool (5C). An earthing work device characterized in that a groove (5C3) is formed at the upper end so as to be detachable from the lot and is provided from the side surface to the lower surface of the tool body (5C1) to lock a ground wire. 2. A main body base frame part (2), a lifting frame part (3), an excavation lot part (4), a ground insertion lot part (5), and a fall prevention device part (6). The main body base frame (2) is
A), a lifting / lowering chain (2B), and a grounding base plate (2C). The vertical frame (2A) is provided on the left and right edges of the front plate (2A11) in the vertical frame (2A1) formed in an H-shaped steel shape. The left and right vertical pipes (2A12) are attached, and a mounting bracket (2A2) for the construction machine (8) is attached rearward at substantially the center of the height of the vertical frame (2A1), and the elevating chain (2A1) is attached. 2B) is vertically elongated, and its upper and lower ends are connected to the center positions of the upper and lower ends of the front plate (2A11) in the vertical frame (2A), and the grounding base plate (2C)
Is a horizontal plate (2C1) connected to the lower end of the vertical frame (2A1) in the forward direction, a lot elevating opening (2C2) opened in the center of the horizontal plate, and left and right sides of the horizontal plate. B. It comprises left and right small walls (2C3) standing upright and a spanner locking groove (2C31) formed in the right small wall (2C3). The elevating frame portion (3) is composed of a vertical plate (3A) parallel to the vertical frame and left and right vertical side walls (3B, 3B) connected to the left and right of the vertical plate, and is configured in a box-like shape. At four corners of the vertical plate (3A), guide rollers (3C) that rotate while sandwiching the vertical pipe (2A12) of the vertical frame (2A) are attached, and the lifting frame unit (3)
Is configured to ascend and descend along the vertical frame (2A), and a sprocket (3) meshed with the elevating chain (2B) is provided in an upper portion in the elevating frame (3).
D) is arranged, and idle sprockets (3D11) are arranged above and below the sprocket (3D) to assist the engagement of the elevating chain (2B). An upper and lower horizontal plate (3D3) is stretched, and a drill rotation motor (3D4) is disposed downward using the upper horizontal plate (3D3). A drill connection bracket (3D5) is connected to the drill rotation motor. The drill connection fitting (3D5) penetrates through the lower horizontal plate (3D3) and protrudes downward. Vibration motors (3D6) are attached to the left and right of the lower part of the lifting frame part (3). The fall prevention device (6) is an arm (6A) protruding above the upper side of the vertical plate (3A) of the lifting frame (3).
A hook (6B) connected to the lower end of the arm by a pin (P) in the front-rear direction and swinging in the left-right direction; and a coil spring (6C) stretched between the right end of the hook and the upper end of the arm. ) And a wire rope (6D) downwardly connected to the right end of the hook, and the hook is a small projection (6E) projecting above the vertical frame (2A).
D. The excavation lot part (4) is composed of a lot (4A), a sleeve (4B), and a bit (4C). The lot (4A) has upper and lower insertion screws at upper and lower ends of the lot body (4A1). (4A11, 4A12) are formed, and notches (4A13) for locking a wrench are formed on both sides of the upper and lower portions of the side wall of the lot body, and the sleeve (4B) is formed.
Is configured such that when the lot bodies are vertically connected, the lower insertion screw (4A12) of the upper lot body and the upper insertion screw (4A11) of the lower lot body are screwed together, Bit (4C) is the lot (4
A) configured to removably screw into the lower insertion screw (4A12) in A); Lot part (5) for earth insertion is lot (5A)
, A sleeve (5B), and a ground insertion tool (5C). The lot (5A) has upper and lower insertion screws (5A11, 5A12) at the upper and lower ends of the lot body (5A1).
Are formed, and notches (5A13) are formed on both sides of the upper and lower portions of the side wall of the lot main body,
The sleeve (5B) is provided with an insertion screw (5A) at the bottom of the lot body located above when the lot body is vertically connected.
12) and the upper insertion screw (5A11) of the lot body located below are screwed together, and the earth insertion tool (5C) is a tool body (5C1) configured in a bullet shape.
Inserting screw (5A12) below lot (5A) on top of
A screw part (5C2) to be attached to and detached from is provided.
A device for grounding work, wherein a groove (5C3) for locking a ground wire is formed from the side surface to the lower surface of the tool body (5C1). 3. In the excavating lot part (4), after using a bit (4C), an earth insertion tool (4D) having the same structure as the earth insertion tool (5C) is attached to the lot (4A). 3. The grounding device according to claim 1 or 2, wherein the device is used.