CN211310174U

CN211310174U - Pitching system and bucket-wheel stacker-reclaimer

Info

Publication number: CN211310174U
Application number: CN201921195343.2U
Authority: CN
Inventors: 邹振萍
Original assignee: Dalian Sda Heavy Industries Co ltd
Current assignee: Dalian Sda Heavy Industries Co ltd
Priority date: 2019-07-27
Filing date: 2019-07-27
Publication date: 2020-08-21
Anticipated expiration: 2029-07-27

Abstract

The utility model belongs to the technical field of bucket-wheel stacker-reclaimer, a every single move system and bucket-wheel stacker-reclaimer is related to. The pitching system comprises a rotary upright post, a cantilever, a bucket wheel mechanism and a pitching mechanism, wherein the first end of the cantilever is hinged to the rotary upright post, the bucket wheel mechanism is hinged to the second end of the cantilever, and the bucket wheel mechanism is used for taking materials; the pitching mechanism comprises a pitching driving component, a gear transmission component and a pull rod, the gear transmission component is hinged on the rotary upright post, the first end of the pull rod is hinged on the gear transmission component, and the second end of the pull rod is hinged on the second end of the cantilever; the pitching driving assembly is fixedly connected to the rotary upright post and used for driving the gear transmission assembly to rotate so that the pull rod hinged to the gear transmission assembly drives the cantilever to swing up and down. The pitching system adopts a structure of gear transmission amplitude-variable pitching.

Description

Pitching system and bucket-wheel stacker-reclaimer

Technical Field

The utility model belongs to the technical field of bucket-wheel stacker-reclaimer, especially, relate to a every single move system and bucket-wheel stacker-reclaimer.

Background

The arm-type bucket-wheel stacker-reclaimer is a large key device widely used in bulk material stacking and reclaiming operations of large and medium storage yards such as metallurgy, electric power, ports, coking and the like, and has the advantages of large stacking and reclaiming capacity, small occupied area of the yard, convenient operation, high automation control degree and the like.

The working principle of the bucket-wheel stacker reclaimer is as follows: the walking mechanism runs along the track, the pitching driving mechanism supports the weight of the bucket wheel and the cantilever, and the bucket wheel can stack and take materials at different heights by changing the height of the bucket wheel. The swing mechanism drives the swing upright post and the front arm frame to swing, and the omnibearing material piling and taking operation of the bucket-wheel stacker-reclaimer is realized through power driving and communication control.

At present, the pitching mechanism of the arm type bucket-wheel stacker reclaimer is divided into an integral balance structural form and a non-integral balance structural form. The non-integral balance amplitude-changing mechanism has two forms of machinery and hydraulic pressure: namely the hydraulic oil cylinder and the steel wire rope are pitched.

In a hydraulic oil cylinder pitching system, the load of a hydraulic system is changed continuously due to the fact that the amplitude variation angle of a bucket wheel arm is changed continuously in the working process. Particularly for double-acting oil cylinders, from compression to tension, the system needs to solve the problems of speed control, vibration and the like. Therefore, the hydraulic ram pitch system is complicated in structure and high in manufacturing cost. In addition, the problems of oil leakage, pressure release, asynchronism and the like are easily caused in the manufacturing and installation of domestic hydraulic stations and hydraulic pipelines, so that a large amount of maintenance cost is required in the use process of the hydraulic cylinder pitching system.

In a wire rope luffing pitch system, a front arm frame must be ensured to have a forward tilting moment, so that the front part of a bucket wheel machine always keeps a certain grounding force. Therefore, the whole eccentricity of the bucket wheel machine is increased, and meanwhile, a protection structure for preventing rope breakage, overload or mechanism failure and the like is required to be added to prevent the equipment from overturning, so that the manufacturing cost and the operation and maintenance cost of the equipment are necessarily increased. In addition, when the bucket-wheel stacker-reclaimer runs for a long time, the accumulated dirt load at each position can be changed according to the specific running conditions and is mainly distributed on the bucket, the surface of the bucket-wheel mechanism and the cantilever frame, so that the integral gravity center of the bucket-wheel stacker-reclaimer continuously moves forward, and the stability of the equipment is poor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the technical problem that a hydraulic oil cylinder pitching system of an existing bucket-wheel stacker reclaimer is prone to leakage is solved.

In order to solve the technical problem, in one aspect, an embodiment of the present invention provides a pitching system, including a rotating column, a cantilever, a bucket wheel mechanism and a pitching mechanism, wherein a first end of the cantilever is hinged to the rotating column, the bucket wheel mechanism is hinged to a second end of the cantilever, and the bucket wheel mechanism is used for taking materials;

the pitching mechanism comprises a pitching driving component, a gear transmission component and a pull rod, the gear transmission component is hinged on the rotary upright post, the first end of the pull rod is hinged on the gear transmission component, and the second end of the pull rod is hinged on the second end of the cantilever;

the pitching driving assembly is fixedly connected to the rotary upright post and used for driving the gear transmission assembly to rotate, so that the pull rod hinged to the gear transmission assembly drives the cantilever to swing up and down.

According to the utility model discloses every single move system will every single move drive assembly fixed connection be in on the gyration stand, through every single move drive assembly drive gear drive assembly rotates, so that with gear drive assembly is articulated the pull rod drives cantilever luffing motion is in order to change the range of cantilever. The pitching system adopts a gear transmission amplitude-variable pitching structure, overcomes the problems of high cost, leakage and asynchronism of a hydraulic oil cylinder system, and solves the hidden troubles of overall stability change and the like in steel wire rope pitching system equipment. In addition, the pitching system has the characteristics of stable transmission, low processing cost, long fault-free working period, convenience in maintenance and the like.

Optionally, the gear transmission assembly includes a transmission gear shaft, a transmission gear and a tower, the transmission gear shaft is mounted on the rotary upright, the transmission gear and the tower are hinged to the transmission gear shaft, the tower can rotate along with the transmission gear, and a first end of the pull rod is hinged to the tower;

the pitching driving assembly is used for driving the transmission gear to rotate.

Optionally, a first connection end portion, a second connection end portion and a third connection end portion are arranged on the tower, a first end of the pull rod is hinged to the first connection end portion, the second connection end portion is hinged to the transmission gear shaft, and the third connection end portion is located on one side, back to the bucket wheel mechanism, of the second connection end portion;

and a gear connecting part is arranged between the second connecting end part and the third connecting end part, and the gear connecting part is hinged with one side of the transmission gear, which is far away from the bucket wheel mechanism.

Optionally, the gear assembly further comprises a weight member fixedly connected at the third connecting end portion.

Optionally, the transmission gear and the tower are located in the same plane, and an axis of the transmission gear shaft is perpendicular to a plane where the transmission gear is located.

Optionally, the pitching driving assembly comprises a driving motor, a gear reduction box and a driving gear, an output shaft of the driving motor is fixedly connected with an input shaft of the gear reduction box, an output shaft of the gear reduction box is fixedly connected with a driving gear shaft of the driving gear, and the driving gear is meshed with the transmission gear;

the gear reduction box is used for reducing the rotating speed output by the driving motor.

Optionally, a first gear and a second gear engaged with the first gear are arranged in the gear reduction box, an output shaft of the driving motor is fixedly connected with a gear shaft of the first gear, and a gear shaft of the second gear is fixedly connected with a driving gear shaft of the driving gear.

Optionally, the pitching driving assembly further comprises a bearing seat, a high-speed coupler and a low-speed coupler, the driving gear shaft of the driving gear is rotatably connected to the bearing seat, the high-speed coupler is fixedly connected between the output shaft of the driving motor and the input shaft of the gear reduction box, and the low-speed coupler is fixedly connected between the output shaft of the gear reduction box and the driving gear shaft of the driving gear.

Optionally, the revolving column includes a column upper portion and a column lower portion fixedly connected below the column upper portion, the first end of the cantilever is hinged on the column lower portion, and the gear transmission assembly is hinged on the column upper portion.

Optionally, the bucket wheel mechanism includes a bucket wheel shaft, a bucket wheel body, a bucket, and a bucket wheel driving device, the bucket wheel shaft is rotatably connected to the second end of the cantilever, the bucket wheel body is fixedly connected to the bucket wheel shaft, and the bucket is fixedly connected to the outer side of the bucket wheel body;

the bucket wheel driving device is fixedly connected to the second end of the cantilever and used for driving the bucket wheel shaft to rotate.

On the other hand, the embodiment of the utility model provides a bucket-wheel stacker reclaimer, it includes every single move system.

Drawings

Fig. 1 is a schematic diagram of a pitch system provided by an embodiment of the present invention;

fig. 2 is a schematic diagram of a portion of a pitch mechanism of a pitch system according to an embodiment of the present invention;

FIG. 3 is a partial cross-sectional view taken at A-A in FIG. 2;

FIG. 4 is a partial cross-sectional view taken at B-B of FIG. 2;

fig. 5 is a schematic diagram of a pitch drive assembly of a pitch system according to an embodiment of the present invention.

The reference numerals in the specification are as follows:

1. a rotating column; 11. the upper part of the upright post; 12. the lower part of the upright post;

2. a cantilever;

3. a bucket wheel mechanism; 31. a bucket wheel shaft; 32. a bucket wheel body; 33. a bucket;

4. a pitch mechanism; 41. a pitch drive assembly; 411. a drive motor; 412. a gear reduction box; 413. a drive gear; 414. a bearing seat; 415. a high-speed coupling; 416. a low speed coupling; 42. a gear drive assembly; 421. a drive gear shaft; 422. a transmission gear; 423. a tower; 4231. a first connecting end portion; 4232. a second connection end portion; 4233. a third connecting end portion; 4234. a gear connecting portion; 424. a counterweight; 43. a pull rod;

5. a radial spherical plain bearing; 6. a self-aligning roller bearing; 7. three rows of cylindrical roller turntable bearings; 8. a door seat; 9. A pinion gear.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 5, the embodiment of the utility model provides a pitching system, including gyration stand 1, cantilever 2, bucket wheel mechanism 3 and pitching mechanism 4, the first end of cantilever 2 articulates on gyration stand 1, bucket wheel mechanism 3 articulates the second end of cantilever 2, bucket wheel mechanism 3 is used for getting the material.

The pitching mechanism 4 comprises a pitching driving component 41, a gear transmission component 42 and a pull rod 43, the gear transmission component 42 is hinged on the rotary upright post 1, a first end of the pull rod 43 is hinged on the gear transmission component 42, and a second end of the pull rod 43 is hinged on a second end of the cantilever 2.

The pitching driving component 41 is fixedly connected to the rotating upright post 1, and the pitching driving component 41 is used for driving the gear transmission component 42 to rotate, so that the pull rod 43 hinged to the gear transmission component 42 drives the cantilever 2 to swing up and down.

The embodiment of the utility model provides a pitch system will pitch drive assembly 41 fixed connection be in on the gyration stand 1, through pitch drive assembly 41 drive gear drive assembly 42 rotates, so that with gear drive assembly 42 is articulated pull rod 43 drives 2 luffing motion of cantilever, in order to change the range of cantilever 2. The pitching system adopts a gear transmission amplitude-variable pitching structure, overcomes the problems of high cost, leakage and asynchronism of a hydraulic oil cylinder system, and solves the hidden troubles of overall stability change and the like in steel wire rope pitching system equipment. In addition, the pitching system has the characteristics of stable transmission, low processing cost, long fault-free working period, convenience in maintenance and the like.

In an embodiment, the first end of the cantilever 2 is hinged to the rotating upright 1 through a self-lubricating joint bearing, the first end of the cantilever 2 is fixedly hinged, and the second end of the cantilever 2 is in floating hinge. The cantilever 2 swings up and down with the hinge shaft a (as shown in fig. 1) as the center by the sliding of the inner ring and the outer ring of the center joint bearing in the hinge shaft.

In one embodiment, as shown in fig. 1 and 2, the gear transmission assembly 42 includes a transmission gear shaft 421, a transmission gear 422, and a tower 423, the transmission gear shaft 421 is mounted on the rotary upright 1, the transmission gear 422 and the tower 423 are hinged to the transmission gear shaft 421, the tower 423 is rotatable with the transmission gear 422, and a first end of the pull rod 43 is hinged to the tower 423. The pitch driving assembly 41 is used for driving the transmission gear 422 to rotate.

When the pitching driving component 41 drives the transmission gear 422 to rotate, the tower 423 rotates along with the transmission gear 422 to drive the pull rod 43 to move, so that the cantilever 2 swings up and down.

In one embodiment, as shown in fig. 1, 2 and 4, the transmission gear 422 is fixed on both sides of the transmission gear shaft 421 through a double-row self-aligning roller bearing. The first end of the pull rod 43 is hinged to the tower 423 through a self-aligning roller bearing, the hinge shaft is c (as shown in fig. 1), the second end of the pull rod 43 is hinged to the cantilever 2 through a joint bearing, and the hinge shaft is d (as shown in fig. 1).

In one embodiment, as shown in fig. 1 and 2, the tower 423 is provided with a first connection end 4231, a second connection end 4232 and a third connection end 4233, and the first end of the pull rod 43 is hinged to the first connection end 4231 to connect the pull rod 43 and the tower 423. The second connecting end 4232 is hinged to the transmission gear shaft 421 and connects the pull rod 43 and the transmission gear shaft 421. The third connection end 4233 is located on the side of the second connection end 4232 facing away from the bucket wheel mechanism 3 to form the tower 423.

A gear connection portion 4234 is arranged between the second connection end portion 4232 and the third connection end portion 4233, and the gear connection portion 4234 is hinged to one side, away from the bucket wheel mechanism 3, of the transmission gear 422 so as to connect the tower 423 and the transmission gear 422.

In one embodiment, as shown in fig. 2 and 3, the drive gear 422 is coupled to the tower 423 via a radial spherical bearing 5.

In one embodiment, as shown in fig. 1, the gear assembly 42 further comprises a weight member 424, the weight member 424 is fixedly connected to the third connection end 4233 to fixedly connect the weight member 424 to the tower 423. The weight member 424 houses an adjustable weight.

In one embodiment, as shown in fig. 1 and 2, the transmission gear 422 and the tower 423 are located in the same plane, and the axis of the transmission gear shaft 421 is perpendicular to the plane of the transmission gear 422, so that when the tower 423 rotates with the transmission gear 422, the pull rod 43 can pull the cantilever 2 to swing up and down around the hinge shaft a (shown in fig. 1).

In an embodiment, as shown in fig. 2 and 5, the pitch driving assembly 41 includes a driving motor 411, a gear reduction box 412 and a driving gear 413, an output shaft of the driving motor 411 is fixedly connected with an input shaft of the gear reduction box 412, an output shaft of the gear reduction box 412 is fixedly connected with a driving gear shaft of the driving gear 413, and the driving gear 413 is engaged with the transmission gear 422.

The gear reduction box 412 is used for reducing the rotating speed output by the driving motor 411.

The rotating speed output by the driving motor 411 is reduced by the gear reduction box 412 and then transmitted to the driving gear shaft of the driving gear 413, and the driving gear 413 is meshed with the transmission gear 422, so that the driving gear 413 rotates to drive the transmission gear 422 to rotate so as to drive the pull rod 43 to move.

In one embodiment, as shown in fig. 5, the pitch drive assembly 41 further includes a bearing seat 414, a high-speed coupling 415, and a low-speed coupling 416, wherein a drive gear shaft of the drive gear 413 is rotatably connected to the bearing seat 414 to mount the drive gear 413. The high-speed coupling 415 is fixedly connected between an output shaft of the driving motor 411 and an input shaft of the gear reduction box 412, and the low-speed coupling 416 is fixedly connected between an output shaft of the gear reduction box 412 and a driving gear shaft of the driving gear 413, so as to realize transmission of the rotating speed.

In one embodiment, a brake is disposed on the high-speed coupling 415.

In an embodiment, a first gear and a second gear engaged with the first gear are disposed in the gear reduction box 412, an output shaft of the driving motor 411 is fixedly connected to a gear shaft of the first gear, and a gear shaft of the second gear is fixedly connected to a driving gear shaft of the driving gear 413, so as to reduce and transmit the rotation speed.

In one embodiment, as shown in fig. 1 and 2, the rotary upright 1 includes an upper upright portion 11 and a lower upright portion 12 fixedly connected below the upper upright portion 11, the first end of the cantilever 2 is hinged to the lower upright portion 12, and the gear assembly 42 is hinged to the upper upright portion 11, so as to achieve the installation between the cantilever 2 and the gear assembly 42 and the rotary upright 1.

In an embodiment, as shown in fig. 1, the bucket wheel mechanism 3 includes an bucket wheel shaft 31, an bucket wheel body 32, an bucket 33, and an bucket wheel driving device (not shown), the bucket wheel shaft 31 is rotatably connected to the second end of the cantilever 2, the bucket wheel body 32 is fixedly connected to the bucket wheel shaft 31, and the bucket 33 is fixedly connected to the outer side of the bucket wheel body 32. The bucket wheel driving device is fixedly connected to the second end of the cantilever 2, and is used for driving the bucket wheel shaft 31 to rotate so as to drive the bucket wheel body 32 fixedly connected to the bucket wheel shaft 31 and the bucket 33 fixedly connected to the outer side of the bucket wheel body 32 to rotate, so that material taking operation is realized.

In an embodiment, as shown in fig. 1, a plurality of the buckets 33 are provided, the plurality of the buckets 33 are uniformly distributed on an outer ring of the bucket wheel body 32, the bucket wheel body 32 is fixed on the bucket wheel shaft 31 by using a locking disc, and the bucket wheel shaft 31 is fixed at the second end of the cantilever 2 by a bearing seat.

The embodiment of the utility model provides a pitching system's theory of operation as follows:

as shown in fig. 5, the driving motor 411 of the pitch driving assembly 41 is started and connected with the input shaft of the gear reduction box 412 by the high-speed coupling 415 with a brake, and the input shaft of the gear reduction box 412 rotates. The gears in the gear reduction box 412 are in meshing transmission, and the output shaft of the gear reduction box 412 is connected with the driving gear shaft of the driving gear 413 through the low-speed coupler 416 to drive the driving gear 413 to rotate.

When the driving gear 413 rotates, the transmission gear 422 rotates synchronously with the outer ring of the self-aligning roller bearing connected between the transmission gear 422 and the transmission gear shaft 421, and the radial spherical bearings between the transmission gear 422 and the tower 423 rotate to drive the tower 423 to rotate around the transmission gear 422 along the hinge shaft b (as shown in fig. 1).

When the tower 423 rotates, the pull rod 43 and the hinge shaft c of the tower 423 rotate around the hinge shaft b of the transmission gear 422, and the pull rod 43 and the hinge shaft d of the cantilever 2 perform up-and-down amplitude movement around the rotation center of the bucket wheel mechanism 3 (i.e., the hinge shaft a of the cantilever 2 and the rotating upright post 1).

Since the boom 2 and the tower 423 are non-integral balance pitch mechanisms that rotate around different rotation centers, the rotation angles of the boom 2 and the tower 423 are different. According to the height of the material pile and the diameter of the bucket wheel, normal material piling and taking operation of the bucket-wheel stacker-reclaimer is realized, the amplitude variation angle of the cantilever 2 around the hinge shaft a is +15.2 degrees to-9.6 degrees, and the rotation angle of the hinge shaft c of the tower 423 around the rotation center d of the gear is +37.7 degrees to-20.8 degrees.

When the driving motor 411 of the pitch driving assembly 41 rotates forward, the transmission gear 422 drives the tower 423 and the pull rod 43 to rotate clockwise around the hinge shaft b, and the cantilever 2 tilts down around the hinge shaft a. When the driving motor 411 of the pitch driving assembly 41 reverses, the transmission gear 422, the tower 423 and the pull rod 43 rotate counterclockwise around the hinge axis b, and the cantilever 2 tilts up around the hinge axis a.

The embodiment of the utility model provides a bucket-wheel stacker reclaimer, it includes foretell every single move system. The rotary upright column 1 is connected with a gate seat 8 through three rows of cylindrical roller turntable bearings 7, and a pinion 9 of the rotary driving device drives an inner ring of the turntable bearing to rotate so that the rotary upright column 1 can rotate within +/-120 degrees around a hinge shaft a.

Cantilever belt feeder is evenly distributed on cantilever 2 the second end of cantilever 2 is driven driving roll by belt drive device and is rotated, through belt, bearing roller group and install the material of digging bucket wheel mechanism 3 is taken away in the operation of the turnabout drum of the first end of cantilever 2. Meanwhile, incoming materials can be reversely operated by the arm support belt conveyor to be stocked to a stock ground.

In an embodiment, the embodiment of the present invention provides a bucket-wheel stacker reclaimer, which has the following technical parameters: the material stacking capacity is 4000t/h, the material taking capacity is 3000t/h, the length of the cantilever 2 is 35m, the belt width of the cantilever 2 is 1400mm, the pitch angle is +15.2 degrees to-9.6 degrees, the pitch speed is 12.1m/min, the number of teeth of the driving gear 413 is 14, the number of teeth of the transmission gear 422 is 194, the gear pair module is 25, and the driving power is 2 x 30 Kw.

The embodiment of the utility model provides an arm-type bucket-wheel stacker reclaimer's every single move mechanism work chain flow:

firstly, the control room starts the work linkage between the operation components according to the working state of the equipment.

When material is taken, the ground system belt conveyor, the belt conveyor arranged on the cantilever 2, the bucket wheel mechanism, the rotary upright post and the travelling mechanism feeding and pitching mechanism are sequentially started.

When stacking, the belt conveyor, the rotary upright post, the pitching mechanism, the walking mechanism feeding and ground system belt conveyor arranged on the cantilever 2 are sequentially started.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A pitching system is characterized by comprising a rotary upright post, a cantilever, a bucket wheel mechanism and a pitching mechanism, wherein a first end of the cantilever is hinged to the rotary upright post, the bucket wheel mechanism is hinged to a second end of the cantilever, and the bucket wheel mechanism is used for taking materials;

2. The pitch system of claim 1 wherein the gear drive assembly comprises a drive gear shaft mounted on the slewing post, a drive gear and a tower hinged to the drive gear shaft, the tower rotatable with the drive gear, the first end of the tension rod hinged to the tower;

3. The pitch system of claim 2 wherein the tower has a first link end, a second link end and a third link end, the first end of the tension rod is hinged to the first link end, the second link end is hinged to the drive gear shaft, and the third link end is located on a side of the second link end facing away from the bucket wheel mechanism;

4. The pitch system of claim 3 wherein the gear drive assembly further comprises a weight fixedly connected at the third connection end.

5. The pitch system of claim 2 wherein the drive gear is in the same plane as the tower and the axis of the drive gear shaft is perpendicular to the plane of the drive gear.

6. The pitch system of claim 2 wherein the pitch drive assembly comprises a drive motor, a gear reduction box and a drive gear, an output shaft of the drive motor is fixedly connected with an input shaft of the gear reduction box, an output shaft of the gear reduction box is fixedly connected with a drive gear shaft of the drive gear, and the drive gear is engaged with the drive gear;

7. The pitch system of claim 6 wherein a first gear and a second gear engaged with the first gear are disposed in the gear reduction box, an output shaft of the driving motor is fixedly connected with a gear shaft of the first gear, and a gear shaft of the second gear is fixedly connected with a driving gear shaft of the driving gear.

8. The pitch system of claim 6 wherein the pitch drive assembly further comprises a bearing block, a high speed coupling and a low speed coupling, the drive gear shaft of the drive gear being rotatably connected to the bearing block, the high speed coupling being fixedly connected between the output shaft of the drive motor and the input shaft of the gear reduction box, the low speed coupling being fixedly connected between the output shaft of the gear reduction box and the drive gear shaft of the drive gear.

9. The pitch system of claim 1 wherein the slewing post comprises an upper post portion and a lower post portion fixedly connected below the upper post portion, the first end of the boom being hinged to the lower post portion, the gear assembly being hinged to the upper post portion.

10. The pitch system of claim 1, wherein the bucket wheel mechanism comprises a bucket wheel shaft, a bucket wheel body, a bucket, and a bucket wheel drive, the bucket wheel shaft is rotatably connected to the second end of the boom, the bucket wheel body is fixedly connected to the bucket wheel shaft, and the bucket is fixedly connected to the outer side of the bucket wheel body;

11. A bucket-wheel stacker reclaimer machine, comprising the pitch system of any one of claims 1 to 10.