Rope-tooth combination structure and hoisting system

Abstract

The utility model relates to toothed chain structure technical field especially relates to a rope tooth combination structure and hoist system, and rope tooth combination structure includes rope group, and the rope group includes the first rope body and second rope body of interval setting, a plurality of rope tooth buckles are set up between first rope body with second rope body, a plurality of rope tooth buckles are set up in the extension direction of rope group interval, and toothed sprocket, the rope group is around set up in toothed sprocket, and the periphery of toothed sprocket is provided with a plurality of tooth grooves, and the rope tooth buckle can be carded and set up in tooth groove. This rope tooth combination structure and hoist system can solve the problem that the existing hoist system is easy to slip under the single side big load working condition.

Description

Technical Field

[0001] This application relates to the field of toothed chain structure technology, and in particular to a rope-tooth combination structure and lifting system. Background Technology

[0002] Gravity energy storage is a method of storing energy using gravitational potential energy. Its basic principle is to lift gravity-generating blocks to a high place to store energy, and when energy needs to be released, these gravity-generating blocks are lowered to drive a generator to generate electricity.

[0003] The rope-tooth coupling structure is a core component of the hoisting system of gravity energy storage equipment, undertaking the important function of transmission. However, current hoisting systems suffer from excessive unilateral force during operation, and existing rope-tooth coupling structures struggle to achieve stable transmission under large unilateral loads. This leads to slippage in the hoisting system under such conditions, affecting transmission reliability and operational safety. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a rope-tooth coupling structure and lifting system to solve the problem that existing lifting systems are prone to slippage under unilateral heavy load conditions.

[0005] According to a first aspect of the present invention, a rope tooth coupling structure is provided, wherein the rope tooth coupling structure includes: a rope body assembly, including a first rope body and a second rope body spaced apart; a plurality of rope tooth buckles, disposed between the first rope body and the second rope body, the plurality of rope tooth buckles being spaced apart in the extending direction of the rope body assembly; and a toothed sprocket, the rope body assembly being wound around the toothed sprocket, the outer periphery of the toothed sprocket being provided with a plurality of tooth grooves, the rope tooth buckles being capable of engaging with the tooth grooves.

[0006] Preferably, the toothed sprocket is disposed between the first rope body and the second rope body, the extension direction of the tooth groove is parallel to the axial direction of the toothed sprocket, and multiple rope tooth buckles are simultaneously engaged in multiple tooth grooves.

[0007] Preferably, the first rope and the second rope are laid on the outer periphery of the toothed sprocket, and the outer periphery of the toothed sprocket is provided with a plurality of rope grooves, the extension direction of the rope grooves being perpendicular to the axial direction of the toothed sprocket, and the first rope and the second rope are engaged in the rope grooves.

[0008] Preferably, the rope groove is an arc-shaped groove that extends circumferentially along the toothed sprocket, and the first rope body and the second rope body form an arc-shaped rope segment between the rope teeth, the arc-shaped rope segment being engaged in the arc-shaped groove; or the rope groove is a straight groove that extends tangentially along the toothed sprocket, and the first rope body and the second rope body form a straight rope segment between the rope teeth, the straight rope segment being engaged in the straight groove.

[0009] Preferably, the rope tooth buckle includes an upper pressure plate and a lower pressure plate that interlock with each other. After the upper pressure plate and the lower pressure plate are interlocked, a first sleeve, a connecting section and a second sleeve are formed. The first sleeve is sleeved on the first rope body, the second sleeve is sleeved on the second rope body, and the connecting section is connected between the first sleeve and the second sleeve.

[0010] Preferably, the connecting segment is formed as a plate-like structure, with a first bolt passing through both the upper and lower pressure plates constituting the plate-like structure, and the first bolt being perpendicular to the plate surface of the plate-like structure; or the connecting segment is formed as a column-like structure, with the extension direction of the column-like structure perpendicular to the extension direction of the rope assembly, and a second bolt passing through the column-like structure radially, and the second bolt passing through both the upper and lower pressure plates constituting the column-like structure; or the connecting segment is formed as a column-like structure with a sleeve installed, the sleeve being fitted around the outer periphery of the column-like structure, and a third bolt passing through both the upper and lower pressure plates constituting the sleeve, the third bolt avoiding the column-like structure.

[0011] Preferably, the first rope and the second rope rotate in opposite directions, and the inner surfaces of the first sleeve and the second sleeve are formed with contoured grooves, and the first rope and the second rope are respectively locked inside the first sleeve and the second sleeve.

[0012] Preferably, there are multiple toothed sprockets, which are coaxially arranged, and multiple rope groups are wound around the multiple toothed sprockets in a one-to-one correspondence, with the tooth grooves of the multiple toothed sprockets aligned.

[0013] Preferably, mounting plates are provided on both sides of the cord tooth buckle, and the cord tooth connection structure further includes a support plate, the end of which is connected to the mounting plate, and the surface of the support plate is perpendicular to the tangent of the toothed sprocket.

[0014] According to a second aspect of the present invention, a lifting system is provided, wherein the lifting system includes the rope tooth coupling structure as described above.

[0015] The rope-tooth coupling structure and lifting system of this utility model embodiment include a rope assembly comprising a first rope and a second rope arranged at intervals. Multiple rope teeth are disposed between the first and second ropes. These multiple rope teeth are spaced apart along the extension direction of the rope assembly. The rope assembly is wound around a toothed sprocket. The outer circumference of the toothed sprocket is provided with multiple tooth grooves, into which the rope teeth can engage. This arrangement enhances the rope assembly's ability to bear large loads on one side. The engagement structure between the rope teeth and the toothed sprocket effectively prevents slippage of the rope assembly during transmission, thus solving the problem of slippage in existing lifting systems under large load conditions on one side.

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of multiple toothed sprockets in the rope-tooth combination structure according to this utility model.

[0019] Figure 2 This is a schematic diagram of a single toothed sprocket according to the rope-tooth combination structure of this utility model.

[0020] Figure 3 This is a schematic diagram of one embodiment of the rope-tooth joint structure according to the present invention.

[0021] Figure 4 This is a schematic diagram of another embodiment of the rope-tooth joint structure according to the present invention.

[0022] Figure 5 This is a schematic diagram of another embodiment of the rope-tooth joint structure according to the present invention.

[0023] Figure 6 This is a schematic diagram of the first embodiment of the cord tooth buckle according to the cord tooth combination structure of this utility model.

[0024] Figure 7 This is a schematic diagram from another angle of the first embodiment of the cord tooth fastener of the cord tooth combination structure according to the present invention.

[0025] Figure 8 This is a schematic diagram of the second embodiment of the cord tooth buckle according to the cord tooth combination structure of this utility model.

[0026] Figure 9 This is a schematic diagram from another angle of the second embodiment of the cord tooth buckle with cord tooth combination structure according to the present invention.

[0027] Figure 10 This is a schematic diagram of the third embodiment of the cord tooth buckle with cord tooth combination structure according to the present invention.

[0028] Figure 11 This is a schematic diagram from another angle of the third embodiment of the cord tooth buckle with cord tooth combination structure according to the present invention.

[0029] Reference numerals in the attached diagram: 1-Rope assembly; 11-First rope; 12-Second rope; 101-Arc-shaped rope segment; 102-Straight rope segment; 2-Rope tooth buckle; 20-Tooth groove; 21-Rope groove; 22-Upper pressure plate; 23-Lower pressure plate; 201-First sleeve; 202-Second sleeve; 203-Connecting section; 3-Toothed sprocket; 4-Plate structure; 41-First bolt; 5-Columnar structure; 51-Second bolt; 6-Pipe sleeve; 61-Third bolt; 7-Contour groove; 8-Mounting plate; 9-Support plate. Detailed Implementation

[0030] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0031] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0032] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0033] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0034] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0035] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0036] The terminology used herein is for the purpose of describing various examples only and is not intended to limit the examples. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0037] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0038] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0039] like Figures 1 to 11 As shown, according to a first aspect of the present invention, a rope tooth coupling structure is provided, which includes a rope body assembly 1, a rope tooth buckle 2, and a toothed sprocket 3.

[0040] In the following description, reference will be made to Figures 1 to 11 The specific structure of the above-mentioned components of the rope-tooth joint structure and the connection relationship of the above-mentioned components are described in detail.

[0041] like Figures 1 to 11 As shown, in this embodiment, the rope assembly 1 may include a first rope 11 and a second rope 12 spaced apart. Preferably, the first rope 11 and the second rope 12 may be steel wire ropes. Multiple rope teeth 2 are disposed between the first rope 11 and the second rope 12. The multiple rope teeth 2 may be spaced apart in the extending direction of the rope assembly 1. The rope assembly 1 may be wound around a toothed sprocket 3. The outer circumference of the toothed sprocket 3 is provided with multiple toothed grooves 20, which are recessed into the interior of the toothed sprocket 3. The rope teeth 2 can be engaged in the toothed grooves 20, thereby improving the connection strength between the rope assembly 1 and the toothed sprocket 3. This arrangement greatly enhances the ability of the rope assembly 1 to bear a large load on one side, and the mating structure between the rope teeth 2 and the toothed sprocket 3 effectively prevents the rope assembly 1 from slipping during transmission.

[0042] Preferred, such as Figure 2 and Figure 3As shown, in this embodiment, the first rope 11 and the second rope 12 can be arranged parallel to each other, and the extension direction of the rope tooth buckle 2 is perpendicular to the first rope 11 and the second rope 12. The width of a single toothed sprocket 3 can be smaller than the distance between the first rope 11 and the second rope 12, so that the toothed sprocket 3 can be positioned between the first rope 11 and the second rope 12. Multiple rope tooth buckles 2 can be simultaneously engaged in multiple tooth grooves 20 of the toothed sprocket 3 to ensure the connection strength between the rope assembly 1 and the toothed sprocket 3. The extension direction of the tooth groove 20 can be parallel to the axial direction of the toothed sprocket 3 to facilitate the engagement of the rope tooth buckle 2 into the tooth groove 20.

[0043] Further optimized, such as Figure 4 and Figure 5 As shown, in another embodiment, the width of a single toothed sprocket 3 can be greater than the distance between the first rope 11 and the second rope 12. The first rope 11 and the second rope 12 can be laid on the outer periphery of the toothed sprocket 3. The outer periphery of the toothed sprocket 3 can also be provided with a plurality of rope grooves 21, which can be arranged between two adjacent tooth grooves 20. The extending direction of the rope grooves 21 is perpendicular to the axial direction of the toothed sprocket 3, and the first rope 11 and the second rope 12 are engaged in the rope grooves 21 to further improve the connection strength between the rope assembly 1 and the toothed sprocket 3.

[0044] Specifically, in such Figure 4 In the illustrated embodiment, the rope groove 21 can be configured as an arc-shaped groove. The rope groove 21 extends circumferentially along the toothed sprocket 3, and two rows of rope grooves 21 can be respectively arranged on both sides of the toothed sprocket 3 in the width direction. The first rope body 11 and the second rope body 12 form an arc-shaped rope segment 101 between the rope tooth buckle 2, and the arc-shaped rope segment 101 is engaged in the arc-shaped groove.

[0045] Not limited to this, in such Figure 5 In the illustrated embodiment, the rope groove 21 can also be configured as a straight groove. The rope groove 21 extends tangentially along the toothed sprocket 3, and two rows of rope grooves 21 can be respectively arranged on both sides of the toothed sprocket 3 in the width direction. The first rope body 11 and the second rope body 12 form a straight rope segment 102 between the rope tooth buckle 2, and the straight rope segment 102 is engaged in the straight groove.

[0046] Preferred, such as Figures 6 to 11 As shown, in this embodiment, the rope tooth buckle 2 may include an upper pressure plate 22 and a lower pressure plate 23 that interlock with each other. After the upper pressure plate 22 and the lower pressure plate 23 are engaged, the rope tooth buckle 2 forms a first sleeve 201, a connecting section 203, and a second sleeve 202. The first sleeve 201 is fitted onto the first rope body 11, and the second sleeve 202 is fitted onto the second rope body 12. The connecting section 203 connects the first sleeve 201 and the second sleeve 202, thereby connecting the first rope body 11 and the second rope body 12 together.

[0047] Furthermore, preferably, in such cases Figure 6 and Figure 7 In the illustrated embodiment, the connecting segment 203 can be formed as a plate-like structure 4. The width of the plate-like structure 4 can be equal to the length of the first sleeve 201 and the second sleeve 202, and the length of the plate-like structure 4 can be equal to the distance between the first sleeve 201 and the second sleeve 202. A plurality of first bolts 41 can be provided on the plate-like structure 4 for fixing the upper pressure plate 22 and the lower pressure plate 23 together. Preferably, the first bolts 41 can be perpendicular to the surface of the plate-like structure 4, and the first bolts 41 pass through both the upper pressure plate 22 and the lower pressure plate 23 constituting the plate-like structure 4.

[0048] Preferably, in such Figure 8 and Figure 9 In the illustrated embodiment, the connecting segment 203 can be formed as a columnar structure 5. The columnar structure 5 can be approximately cylindrical in shape. The extending direction of the columnar structure 5 can be perpendicular to the extending direction of the rope assembly 1 (i.e., parallel to the axial direction of the toothed sprocket 3). Multiple second bolts 51 can be provided on the columnar structure 5 for fixing the upper pressure plate 22 and the lower pressure plate 23 together. Preferably, the second bolts 51 can be radially inserted into the columnar structure 5, and the second bolts 51 simultaneously insert into both the upper pressure plate 22 and the lower pressure plate 23 constituting the columnar structure 5.

[0049] Furthermore, preferably, in such cases Figure 10 and Figure 11 In the illustrated embodiment, the connecting segment 203 can be formed as a columnar structure 5 with a sleeve 6 installed. The sleeve 6 can be approximately a cylindrical sleeve, and the sleeve 6 is fitted around the outer periphery of the columnar structure 5. Multiple third bolts 61 can be provided on the sleeve 6, and the third bolts 61 can simultaneously pass through the upper pressure plate 22 and the lower pressure plate 23 constituting the sleeve 6, thereby fixing the upper pressure plate 22 and the lower pressure plate 23 together. Preferably, the third bolts 61 can be arranged tangentially to the sleeve 6, so that the third bolts 61 can avoid the columnar structure 5.

[0050] In addition, preferred, such as Figures 6 to 11As shown, in this embodiment, the first rope 11 and the second rope 12 can have opposite directions of rotation (for example, the first rope 11 is a right-handed wire rope, and the second rope 12 is a left-handed wire rope). Correspondingly, contoured grooves 7 can be formed on the inner surfaces of the first sleeve 201 and the second sleeve 202, allowing the first rope 11 and the second rope 12 to be respectively secured inside the first sleeve 201 and the second sleeve 202. This arrangement ensures that the upper pressure plate 22 and the lower pressure plate 23 of the rope tooth buckle 2, after being tightened with bolts, can withstand the breaking load of the first rope 11 and the second rope 12, thereby improving the overall structural strength of the rope tooth connection structure.

[0051] Preferred, such as Figures 1 to 5 As shown, in this embodiment, the number of toothed sprockets 3 disposed on one side of the rope assembly 1 can be single (i.e., when the rope assembly 1 is configured as a ring, the rope assembly 1 can have a single toothed sprocket 3 on both sides) or multiple. The number of rope assemblies 1 can correspond to the number of toothed sprockets 3. Preferably, when there are multiple toothed sprockets 3, the multiple toothed sprockets 3 can be coaxially arranged. The multiple rope assemblies 1 can be wound around the multiple toothed sprockets 3 in a one-to-one correspondence, and the tooth grooves 20 of the multiple toothed sprockets 3 can be aligned.

[0052] Furthermore, preferably, such as Figure 1 and Figures 8 to 11 As shown, in this embodiment, mounting plates 8 can be provided on both sides of the cord tooth buckle 2 (both sides axially on the toothed sprocket 3). The mounting plates 8 can be integrally formed with the lower pressure plate 23. The cord tooth connection structure can also include a support plate 9. The support plate 9 can be approximately a rectangular plate, and the end of the support plate 9 can be fixed to the mounting plate 8 by bolts. The plate surface of the support plate 9 can be perpendicular to the tangential direction of the toothed sprocket 3, so that the support plate 9 can be used to support loads.

[0053] In addition, such as Figures 1 to 11 As shown, according to a second aspect of the present invention, a lifting system is provided, the lifting system including the rope tooth coupling structure as described above.

[0054] During use, the diverse design forms of the rope assembly 1 and the rope tooth buckle 2 can effectively meet the needs of different working conditions. The rope tooth connection structure, through the snap-fit ​​structure between the toothed sprocket 3 and the rope assembly 1 and the rope tooth buckle 2, improves the connection strength between the rope assembly 1 and the toothed sprocket 3, thereby greatly enhancing the ability of the rope assembly 1 to bear large loads on one side and effectively preventing the rope assembly 1 from slipping during transmission.

[0055] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The scope of protection of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A rope-tooth joint structure, characterized in that, The cord-tooth coupling structure includes: The rope assembly includes a first rope and a second rope arranged at intervals; Multiple cord teeth are disposed between the first rope body and the second rope body, and the multiple cord teeth are spaced apart in the extending direction of the rope body assembly; and A toothed sprocket, the rope assembly is wound around the toothed sprocket, the outer circumference of the toothed sprocket is provided with multiple tooth grooves, and the rope tooth buckle can be locked in the tooth grooves.

2. The rope-tooth joint structure according to claim 1, characterized in that, The toothed sprocket is disposed between the first rope and the second rope, the tooth groove extends parallel to the axial direction of the toothed sprocket, and multiple rope tooth buckles are simultaneously engaged in multiple tooth grooves.

3. The rope-tooth joint structure according to claim 1, characterized in that, The first rope and the second rope are laid on the outer periphery of the toothed sprocket. The outer periphery of the toothed sprocket is provided with a plurality of rope grooves. The extending direction of the rope grooves is perpendicular to the axial direction of the toothed sprocket. The first rope and the second rope are engaged in the rope grooves.

4. The rope-tooth joint structure according to claim 3, characterized in that, The rope groove is an arc-shaped groove that extends circumferentially along the toothed sprocket. The first rope body and the second rope body form an arc-shaped rope segment between the rope teeth buckle, and the arc-shaped rope segment is engaged in the arc-shaped groove. Alternatively, the rope groove may be a straight groove, extending tangentially along the toothed sprocket, with the first rope body and the second rope body forming a straight rope segment between the rope teeth, the straight rope segment being engaged within the straight groove.

5. The rope-tooth joint structure according to claim 1, characterized in that, The rope tooth buckle includes an upper pressure plate and a lower pressure plate that interlock with each other. After the upper pressure plate and the lower pressure plate are interlocked, a first sleeve, a connecting section and a second sleeve are formed. The first sleeve is sleeved on the first rope body and the second sleeve is sleeved on the second rope body. The connecting section is connected between the first sleeve and the second sleeve.

6. The rope-tooth joint structure according to claim 5, characterized in that, The connecting section is formed as a plate-like structure, and the first bolt passes through both the upper pressure plate and the lower pressure plate constituting the plate-like structure. The first bolt is perpendicular to the plate surface of the plate-like structure. Alternatively, the connecting section may be formed as a columnar structure, the extension direction of the columnar structure being perpendicular to the extension direction of the rope assembly, and the second bolt being radially inserted into the columnar structure, and the second bolt being inserted into both the upper pressure plate and the lower pressure plate constituting the columnar structure. Alternatively, the connecting section may be formed as a columnar structure with a sleeve installed, the sleeve being fitted around the outer periphery of the columnar structure, and a third bolt passing through both the upper and lower pressure plates constituting the sleeve, the third bolt avoiding the columnar structure.

7. The rope-tooth joint structure according to claim 5, characterized in that, The first rope and the second rope rotate in opposite directions. The inner surfaces of the first sleeve and the second sleeve are formed with contoured grooves, and the first rope and the second rope are respectively locked inside the first sleeve and the second sleeve.

8. The rope-tooth joint structure according to any one of claims 1 to 7, characterized in that, The number of toothed sprockets is multiple, and the multiple toothed sprockets are coaxially arranged. The multiple rope groups are wound around the multiple toothed sprockets in a one-to-one correspondence, and the tooth grooves of the multiple toothed sprockets are aligned.

9. The rope-tooth joint structure according to claim 8, characterized in that, Mounting plates are provided on both sides of the cord tooth buckle, and the cord tooth connection structure also includes a support plate. The end of the support plate is connected to the mounting plate, and the surface of the support plate is perpendicular to the tangent of the toothed sprocket.

10. A lifting system, characterized in that, The lifting system includes the rope-tooth coupling structure as described in any one of claims 1 to 9.

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