Load chains, drag chains and dust-free drag chains

Abstract

The present invention discloses a load-bearing chain, a drag chain and a dust-free drag chain, wherein the load-bearing chain is used for the load-bearing drag chain, and comprises: a load-bearing base belt, which can be bent along its length direction; a chain link group, which is arranged on the load-bearing base belt, and the chain link group comprises: a plurality of first chain links, the first chain links are mounted on the load-bearing base belt and can float relative to the load-bearing base belt, the first chain links are distributed along the length direction of the load-bearing base belt, a plurality of second chain links, the second chain links are distributed along the length direction of the load-bearing base belt, a second chain link is respectively connected to two adjacent first chain links, and can float relative to at least one of the two adjacent first chain links, and when a part of the load-bearing base belt is in a bent state, the second chain link located at the bent position of the load-bearing base belt pulls the two first chain links connected thereto. The load-bearing chain of the present invention can greatly improve the load-bearing strength of the load-bearing chain because the load-bearing base belt for mounting the first chain links is provided.

Description

Technical Field

[0001] The present invention relates to the technical field of cable protection, and in particular to a load-bearing chain, a drag chain and a dust-free drag chain. Background Art

[0002] Drag chains are widely used in various automation equipment to protect the cables (such as cables and air pipes) of the equipment to prevent them from breaking, entanglement, etc. In the pharmaceutical, microelectronics, medical device and other manufacturing industries, it is usually necessary to produce related products in dust-free workshops. However, due to long-term bending and abrasion, the drag chains in the equipment will produce debris and dust, which will pollute the dust-free workshop and reduce the quality of the products.

[0003] In order to solve the problems of debris, dust and other problems caused by wear and tear of drag chains, dust-free drag chains are usually used in dust-free workshops in related technologies. Known dust-free drag chains usually require the addition of load-bearing chains in the sheath. However, most of the known dust-free drag chains bear weight by the connection between the chain links, and the load-bearing strength is insufficient. When the movement distance is long, it is easy to collapse. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a load-bearing chain that can improve the load-bearing strength. In addition, the present invention also provides a drag chain and a dust-free drag chain using the load-bearing chain.

[0005] According to the first aspect of the present invention, the load-bearing chain is used for carrying the drag chain, comprising: a load-bearing base belt, which can be bent along its length direction; a chain link group, which is arranged on the load-bearing base belt, and the chain link group has: a plurality of first chain links, which are installed on the load-bearing base belt and can float relative to the load-bearing base belt, and the first chain links are distributed along the length direction of the load-bearing base belt; a plurality of second chain links, which are distributed along the length direction of the load-bearing base belt, and one second chain link is respectively connected to two adjacent first chain links and can float relative to at least one of the two adjacent first chain links. When a part of the load-bearing base belt is in a bent state, the second chain link located at the bent position of the load-bearing base belt pulls the two first chain links connected to it.

[0006] The load-bearing chain according to the first embodiment of the present invention has at least the following beneficial effects: since a load-bearing base belt for installing the first chain link is provided, the load-bearing strength of the load-bearing chain can be greatly improved.

[0007] In some embodiments, the carrier substrate is a metal piece.

[0008] In some embodiments, the first links are respectively snapped to the carrier base tape in a floatable manner.

[0009] In some embodiments, a plurality of lugs are formed on both sides of the carrier base tape in the width direction, and the lugs are protruding along the thickness direction of the carrier base tape.

[0010] In some embodiments, a plurality of U-shaped connectors are further included, wherein the connectors are distributed along the length direction of the carrier base tape, and the connectors are respectively installed on the carrier base tape to form the lug portions on both sides in the width direction of the carrier base tape.

[0011] In some embodiments, one of the first chain links is respectively fixedly disposed between two opposite lug portions along the width direction of the carrier base tape in a floating manner.

[0012] In some embodiments, the first link is U-shaped, and second wall portions are respectively provided on both sides of the first link, and the second wall portions can be floatably clamped to the two opposite lug portions along the width direction of the carrier base tape.

[0013] In some embodiments, when at least part of the carrier base tape is in a straight state, the rear end of one of the first links located in the straight position of the carrier base tape at least partially abuts against the front end of another first link disposed behind it.

[0014] In some embodiments, the front end of the first link is provided with a first protrusion protruding forward; the rear end of the first link is provided with a first accommodating portion recessed in the direction of the front end of the first link; among the first links located in a straight position on the supporting base belt, the first protrusion of one of the first links abuts against the first accommodating portion of another first link arranged in front of it.

[0015] In some embodiments, a second protrusion protruding toward the rear of the first link is provided at the rear end of the first link and above the first accommodating portion; a second accommodating portion recessed toward the rear end of the first link relative to the first protrusion is provided at the front end of the first link and above the first protrusion; among the first links located in a straight position on the supporting base tape, when the first protrusion of one of the first links abuts against the first accommodating portion of another first link disposed in front of it, the second protrusion of the front first link abuts against the second accommodating portion of the rear first link.

[0016] In some embodiments, the second link is U-shaped, the front end of the second link can be floatingly clamped to the first link at its front end side, and the rear end of the second link can be floatingly clamped to the first link at its rear end side.

[0017] In some embodiments, when at least part of the carrier base tape is in a straight state, the rear end of one of the second links located in the straight position of the carrier base tape at least partially abuts against the front end of another second link disposed behind it.

[0018] In some embodiments, the chain link group includes multiple groups, which are arranged in parallel and spaced apart along the width direction of the carrier base belt.

[0019] According to the second aspect of the present invention, a drag chain for storing cables includes: a load-bearing base belt that can be bent along its length; a link group arranged on the load-bearing base belt, the link group having: a plurality of first links, the first links are mounted to the load-bearing base belt and can float relative to the load-bearing base belt, the first links are distributed along the length of the load-bearing base belt, the first links are provided with grooves opening toward the load-bearing base belt to form a storage space for storing the cables with the load-bearing base belt, a plurality of second links, the second links are distributed along the length of the load-bearing base belt, one second link is respectively connected to two adjacent first links, and can float relative to at least one of the two adjacent first links, and when a part of the load-bearing base belt is in a bent state, the second link located at the bent position of the load-bearing base belt pulls the two first links connected to it.

[0020] The drag chain according to the embodiment of the second aspect of the present invention has at least the following beneficial effects: since a load-bearing base belt for installing the first chain link is provided, the load-bearing strength of the drag chain can be greatly improved.

[0021] According to the dust-free drag chain of the third aspect of the present invention, for storing cables, it includes: a long sheath, which is a flexible member, a storage cavity is arranged in the sheath, the storage cavity extends along the length direction of the sheath, and the cable is stored in the storage cavity; any one of the above-mentioned load-bearing chains, the load-bearing chain is stored in the storage cavity and supports the sheath.

[0022] The dust-free drag chain according to the embodiment of the third aspect of the present invention has at least the following beneficial effects: since a load-bearing base belt for installing the first chain link is provided as a load-bearing chain for supporting the dust-free drag chain, the load-bearing strength of the load-bearing chain can be greatly improved, thereby improving the load-bearing strength of the dust-free drag chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a side view of an embodiment of the load-bearing chain of the first aspect of the present invention.

[0024] Figure 2 yes Figure 1Partial view of the load-bearing chain.

[0025] Figure 3 yes Figure 2 A three-dimensional diagram of the load-bearing chain.

[0026] Figure 4 It is a perspective view of an embodiment of a first chain link.

[0027] Figure 5 is a schematic diagram of the lug portion that carries the base tape.

[0028] Figure 6 Schematic diagram of another embodiment in which the first link is floatingly mounted to the carrier base belt.

[0029] Figure 7 It is a perspective view of an embodiment of the second link.

[0030] Figure 8 It is a schematic diagram of another embodiment in which a second chain link pulls two first chain links connected thereto.

[0031] Fig. 9 is a schematic diagram of another embodiment of a load-bearing chain.

[0032] Fig.10 It is a perspective view of the drag chain according to the second aspect of the present invention.

[0033] Fig.11 It is a three-dimensional diagram of a dust-free drag chain according to the third aspect of the present invention. DETAILED DESCRIPTION

[0034] The embodiments of the invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the invention, and cannot be understood as limiting the invention.

[0035] In the description of the invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0036] In the description of the invention, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of the first or the second, it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0037] In the description of the invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meaning of the above terms in the invention based on the specific content of the technical solution.

[0038] In the description of the invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0039] In addition, in the following description, for the convenience of explanation, the same figure marks are given to the same or similar technical features.

[0040] Figure 1 is a side view of the load-bearing chain 100 according to the first aspect of the present invention, Figure 2 yes Figure 1 A partial view of the load-bearing chain 100 is a schematic diagram showing the intersection of the straight position 113 and the bent position 104, Figure 3 yes Figure 2 A perspective view of the load-bearing chain 100 is shown in FIG. Figures 1 to 3 According to the load-bearing chain 100 of the first embodiment of the present invention, a load-bearing drag chain 124 (auxiliary reference Fig. 9 , Fig.10), comprising: a carrier base 101 and a chain link group 200 arranged on the carrier base 101. The carrier base 101 can be bent along the length direction. The chain link group 200 has a plurality of first chain links 102 and a plurality of second chain links 103. The first chain links 102 are mounted on the carrier base 101 and can float relative to the carrier base 101. The first chain links 102 are distributed along the length direction of the carrier base 101. The second chain links 103 are distributed along the length direction of the carrier base 101. One second chain link 103 connects two adjacent first chain links 102 respectively and can float relative to at least one of the two adjacent first chain links 102. When a part of the carrier base 101 is in a bent state, the second chain link 103 located at the bent position 104 (the dotted box portion) of the carrier base 101 pulls the two first chain links 102 connected thereto.

[0041] In this embodiment, since the bearing base belt 101 for mounting the first link 102 is provided, the bearing strength of the bearing chain 100 can be greatly improved. Specifically, since the bearing base belt 101 is in the form of a whole sheet, compared with the previous bearing chain that carries the load by connecting the links with each other, the bearing capacity is greatly improved, the movement distance can be greatly increased, and it is not easy to collapse.

[0042] It should be noted that the “ribbon” shape should be interpreted as a shape in which the length is much greater than the width, the thickness is thin, and it is easy to bend along the length direction.

[0043] It should be noted that "floating" should be broadly understood as the two are not completely fastened, but can be adjusted according to needs through the gap between them. Including but not limited to such adjustment methods as sliding, rotating, swinging, etc. In addition, these adjustment methods can be either adaptive adjustment between the two, or active adjustment of the two through external force.

[0044] It should be noted that although the dotted line portion is used as the bent position 104 and the dashed line portion is used as the straight position 113 , this is only for the convenience of explanation. The bent position 104 and the straight position 113 change with the movement of the load-bearing chain 100 .

[0045] In some embodiments, in order to further improve the load-bearing capacity of the load-bearing chain 100, the load-bearing base belt 101 is a metal part. Specifically, as metal materials, there can be listed: stainless steel materials, copper alloy materials such as phosphor bronze, beryllium bronze, etc., spring steel materials, titanium alloys, etc. In addition, as long as free bending and resetting can be achieved, the thickness of the load-bearing base belt 101 is not particularly limited, and the thickness of the load-bearing base belt 101 can be selected, for example, from 0.2 mm to 0.5 mm, for example, 0.4 mm stainless steel can be selected. Similarly, as long as free bending and resetting can be achieved, the width of the load-bearing base belt 101 can be selected as needed. In addition, the length of the load-bearing base belt 101 is selected according to the length of the load-bearing chain 100.

[0046] In addition, although the above description uses metal as the carrier base 101, it is not limited to this. For example, fiber materials and ceramic materials can also be used as long as they are suitable. In addition, a combination of metal materials and non-metallic materials can also be used, for example, a combination of steel wire rope and glass fiber can be used to form the carrier base 101.

[0047] In addition, the materials of the first link 102 and the second link 103 can be selected as needed, and can be the same material as the carrier base belt 101, or other conventional materials in the art such as plastics and other self-lubricating materials.

[0048] In some embodiments, in order to facilitate the installation of the first links 102 on the carrier base 101 , the first links 102 are respectively snapped onto the carrier base 101 in a floating manner.

[0049] Specifically, in some embodiments, in order to make the first chain link 102 easily clamped to the carrier base 101, a plurality of lugs 105 are formed on both sides of the width direction of the carrier base 101, and the lugs 105 protrude along the thickness direction of the carrier base 101. Specifically, the lugs 105 on both sides of the width direction of the carrier base 101 are opposite to each other along the width direction of the carrier base 101. By providing the lugs 105, the first chain link 102 can be easily clamped to the carrier base 101. For example, one first chain link 102 can be floatingly clamped between two lugs 105 opposite to each other along the width direction of the carrier base 101. Since the lugs 105 protrude along the thickness direction of the carrier base 101, it is convenient for the first chain link 102 to be clamped to the lugs 105 along the thickness direction or length direction of the carrier base 101.

[0050] Figure 4 is a perspective view of the first link 102, Figure 5 is a schematic diagram of the lug portion 105 of the carrier base band 101, referring to Figure 4 , Figure 5 , and auxiliary reference Figure 2 , Figure 3 In some embodiments, a first stopper 106 may be provided on each lug 105, and a second stopper 107 may be provided on the side of the first link 102 opposite to the two lugs 105 in the width direction of the carrier base 101, so that the first link 102 can be conveniently clamped between the two lugs 105. The first stopper 106 may be selected from, for example, a clamping hole, and correspondingly, the second stopper 107 may be selected from, for example, a clamping protrusion, and the outer diameter of the clamping protrusion is set to be slightly smaller than the inner diameter of the clamping hole, so that the first link 102 can be slightly rotated relative to the lug 105, so that the first link 102 can float relative to the carrier base 101. Further, in order to make the second stopper 107 of the first link 102 easily clamped to the first stopper 106 of the lug 105, a first guide surface 108 may be provided on the clamping protrusion as the second stopper 107.

[0051] In addition, although the above description uses the locking hole as the first locking portion 106 and the locking protrusion as the second locking portion 107 as an example, it is not limited to this. For example, the locking protrusion can also be used as the first locking portion 106 and the locking hole can be used as the second locking portion 107.

[0052] In some embodiments, in order to easily form the lug portion 105, a plurality of U-shaped connectors 109 are further included. The connectors 109 are distributed along the length direction of the carrier base 101. The connectors 109 are respectively installed on the carrier base 101 to form the lug portions 105 on both sides of the width direction of the carrier base 101. Specifically, the connectors 109 and the carrier base 101 are both metal parts. The connector 109 is installed on the carrier base 101 in a manner such as riveting, welding, clamping, threading, gluing, etc., with the opening facing the carrier base 101. In order to reduce costs and simplify the installation process, the connector 109 can be installed on the carrier base 101 in a riveting manner. As a result, the first wall portions on both sides of the opening of the connector 109 protrude along the thickness direction of the carrier base 101, thereby forming the lug portions 105 on both sides of the width direction of the carrier base 101.

[0053] In addition, the above description of the connection member 109 as being in a U-shape, here, as long as it is a main structure having an opening, side walls on both sides of the opening, and a bottom wall connecting the two side walls at the opposite end of the opening, it can be considered to be in a U-shape. It is not limited to whether the two side walls are parallel or whether there is a rounded corner between the two side walls and the bottom wall.

[0054] In addition, although the above description is based on the example of forming the lug portion 105 by installing the connector 109 to the carrier base 101, it is not limited to this. For example, when the carrier base 101 is a metal part, the lug portion 105 can also be integrally formed with the carrier base 101 by, for example, stamping and bending. Alternatively, the lug portions 105 on both sides of the width direction of the carrier base 101 can also be independently installed to the carrier base 101 by, for example, riveting, welding, clamping, threading, etc.

[0055] In some embodiments, in order to make the first link 102 easily snap onto the lug 105 and simplify the structure of the first link 102, the first link 102 is in a U shape, and the second wall 110 is respectively provided on both sides of the first link 102, and the second wall 110 can be respectively snapped onto two lugs 105 opposite to each other along the width direction of the carrier base 101 in a floating manner. Specifically, the second stopper 107 includes, for example, two, which are respectively provided on the second wall 110. The second stopper 107 of the second wall 110 on both sides is coaxial. The first link 102 is snapped onto the two lugs 105 in a manner of opening toward the carrier base 101. Since the first link 102 is arranged to be U-shaped, when the first link 102 is snapped into the lug portion 105, the second wall portion 110 is slightly retracted inwardly in the width direction of the first link 102, and at the same time, the two lug portions 105 are slightly expanded outwardly in the width direction of the supporting base belt 101, thereby enabling the first link 102 to be easily snapped into the lug portion 105.

[0056] In addition, in order to make the first link 102 float easily relative to the lug 105, the outer dimension of the first link 102 in the width direction can be set to be slightly smaller than the inner dimension of the lug 105 in the width direction. In this way, the friction between the first link 102 and the lug 105 is reduced to a certain extent, which not only makes it easier for the first link 102 to float relative to the lug 105, but also reduces the noise when the load-bearing chain 100 is working.

[0057] Figure 6 is a schematic diagram of another embodiment in which the first link 102 is floatingly mounted to the carrier base belt 101. Figure 6 In order to facilitate illustration, the carrier base tape 101 is partially cut open, referring to Figure 6In addition, in the above embodiment, although the lug 105 having the first stopper 106 is provided on the carrier base 101, and the first link 102 is clamped to the first stopper 106 through the second stopper 107, thereby being installed to the lug 105 in a floating manner, the present invention is not limited thereto. For example, a groove 111 may be directly provided on the carrier base 101 as the first stopper 106, and an elastic block 112 that can be non-returnably inserted into the groove 111 is provided at one end of the first link 102 close to the carrier base 101 as the second stopper 107, thereby enabling the first link 102 to be clamped to the carrier base 101 in a floating manner.

[0058] Furthermore, the first chain link 102 may be directly locked to the carrier base belt 101 in a floating manner, for example, by threaded connection.

[0059] Continue to refer to Figures 2 to 4 In some embodiments, in order to further improve the load-bearing capacity of the load-bearing chain 100, when at least part of the load-bearing base belt 101 is in a straight state, among the first chain links 102 located at the straight position 113 (the dotted line frame portion) of the load-bearing base belt 101, the rear end of one of the first chain links 102 at least partially abuts against the front end of another first chain link 102 disposed behind it. Specifically, a first protrusion 114 protruding toward the front may be disposed at the front end of the first chain link 102, and a first accommodation portion 115 recessed toward the front end of the first chain link 102 may be disposed at the rear end of the first chain link 102. Among the first chain links 102 located at the straight position 113 of the load-bearing base belt 101, the first protrusion 114 of a first chain link 102 located at the rear end of the load-bearing base belt 101 abuts against the first accommodation portion 115 of a first chain link 102 located at the front end of the first chain link 102. Therefore, two adjacent first links 102 are abutted against each other through the first protrusion 114 arranged at the front end of one of the first links 102 and the first accommodation portion 115 arranged at the rear end of the other first link 102. As a result, the two adjacent first links 102 can effectively support each other, thereby further improving the load-bearing capacity of the load-bearing chain 100.

[0060] Furthermore, a second protrusion 116 protruding toward the rear of the first link 102 is provided at the rear end of the first link 102, above the first accommodating portion 115 (on the side away from the carrier base tape 101), and a second accommodating portion 117 recessed toward the rear end of the first link 102 relative to the first protrusion 114 is provided at the front end of the first link 102, above the first protrusion 114. When the first protrusion 114 of a first link 102 located at the rear in the length direction of the carrier base tape 101 abuts against the first accommodating portion 115 of a first link 102 located at the front of the first link 102, the second protrusion 116 of the first link 102 located at the front also abuts against the second accommodating portion 117 of the first link 102 located at the rear.

[0061] When the load-bearing chain 100 is subjected to force from above, the first chain link 102 floats relative to the load-bearing base belt 101. For example, among two adjacent first chain links 102, the front first chain link 102 floats clockwise, and the rear first chain link 102 floats counterclockwise. Since the second accommodation portion 117 is located above the first protrusion 114, when the two first chain links 102 float, the second protrusion 116 of the front first chain link 102 will be restricted by the first protrusion 114 of the rear first chain link 102 and cannot continue to float. Therefore, the load-bearing chain 100 can be prevented from collapsing, and the load-bearing capacity of the load-bearing chain 100 is further improved.

[0062] In addition, first notches 118 are respectively formed at the front and rear ends of the tops of the first links 102 to prevent the tops of two adjacent first links 102 from interfering with each other when force is applied to the load-bearing chain 100 from above.

[0063] The first protrusion 114 and the first receiving portion 115 are respectively arc-shaped, so that the two front and rear first links 102 can easily abut against each other when located at the straight position 113 of the carrier base belt 101, and can easily separate from each other when located at the curved position 104 of the carrier base belt 101.

[0064] Similarly, the second protrusion 116 and the second receiving portion 117 are also arc-shaped, so that the two front and rear first links 102 can easily abut against each other when located at the straight position 113 of the carrier base belt 101, and can easily separate from each other when located at the curved position 104 of the carrier base belt 101.

[0065] In addition, it should be noted that "abutment" should be understood to include at least a state where the two are already in contact with each other and a state where the two are already adapted but not actually in contact. This is because, during the design process, in order to improve the smoothness of the two (e.g., two first links 102) when they move relative to each other and reduce the friction between the two, a margin is designed between the two. However, due to factors such as processing and assembly, the abutment position between the two may change slightly.

[0066] Figure 7 is a perspective view of the second link 103, referring to Figure 7 And continue to refer to Figure 2 , Figure 3 When at least part of the carrier chain 100 gradually switches from a straight state to a curved state, the first chain links 102 at the curved position 104 of the carrier chain 100 gradually separate, thereby the second chain links 103 respectively connected to two adjacent first chain links 102 are floatable relative to at least one of them. In addition, in order to control the separation degree of the first chain links 102 and thus control the bending degree of the carrier chain 100, the second chain links 103 at the curved position 104 of the carrier base belt 101 are configured to pull the two first chain links 102 connected thereto.

[0067] In some embodiments, the second link 103 is in a U shape, and the front end of the second link 103 can be floatingly clamped to the first link 102 at the front end side thereof, and the rear end of the second link 103 can be floatingly clamped to the first link 102 at the rear end side thereof. Specifically, a third clamping portion 119 (see Figure 4 ), a fourth stopper 121 is provided at the front end and the rear end of the third wall portion 120 on both sides of the second link 103. The fourth stopper 121 located at the front end of the second link 103 is stuck to the third stopper 119 located at the rear end of the first link 102 located at the front end side of the second link 103. The fourth stopper 121 located at the rear end of the second link 103 is stuck to the third stopper 119 located at the front end of the first link 102 located at the rear end side of the second link 103. Thus, the second link 103 can be easily stuck to the first link 102.

[0068] In order to make the second chain link 103 hold two adjacent first chain links 102 respectively and make them floatable, the third stopper 119 can be selected as a stopper protrusion, and correspondingly, the fourth stopper 121 can be selected as a long stopper hole. The width of the stopper hole is slightly larger than the outer diameter of the stopper protrusion, and the length of the stopper hole is adapted according to the required separation degree of the two adjacent first chain links 102, that is, according to the bending degree of the carrier chain 100. In this way, the second chain link 103 located at the bending position 104 of the carrier base belt 101 can hold the two first chain links 102 connected thereto.

[0069] Furthermore, in order to make the fourth locking portion 121 of the second link 103 easily locked to the third locking portion 119 of the first link 102 , a second guide surface 122 , for example, may be provided on the locking protrusion of the third locking portion 119 .

[0070] In addition, in order to make the second link 103 float easily relative to the first link 102, the inner dimension of the second link 103 in the width direction can be set to be slightly larger than the outer dimension of the first link 102 in the width direction. In this way, the friction between the second link 103 and the first link 102 is reduced to a certain extent, which not only makes the second link 103 float easily relative to the first link 102, but also reduces the noise when the load-bearing chain 100 is working.

[0071] In some embodiments, in order to further prevent the load-bearing chain 100 from collapsing and improve the load-bearing capacity of the load-bearing chain 100, when at least part of the load-bearing base belt 101 is in a straight state, among the second links 103 located at the straight position 113 of the load-bearing base belt 101, the rear end of one second link 103 at least partially abuts against the front end of another second link 103 arranged behind it. Specifically, the front end and the rear end of the second link 103 can be respectively set to be roughly flat, and the rear end of a second link 103 located at the straight position 113 of the load-bearing base belt 101 is roughly located in the middle of the front-to-back direction of the first link 102 on the rear end side thereof, and correspondingly, the front end of a second link 103 behind the second link 103 is also roughly located in the middle of the front-to-back direction of the first link 102. Thus, the rear end of one second link 103 can at least partially abut against the front end of another second link 103 disposed behind it, further preventing the load-bearing chain 100 from collapsing and improving the load-bearing capacity of the load-bearing chain 100 .

[0072] In addition, the front end and the rear end of the top of the second chain link 103 are respectively provided with a second notch 123 to prevent the tops of two adjacent second chain links 103 from interfering with each other when the load-bearing chain 100 is subjected to force from above.

[0073] Figure 8is a schematic diagram of another embodiment in which the second link 103 pulls the two first links 102 connected thereto, referring to Figure 8 In addition, although the above description is based on the example that the second link 103 can be respectively and floatingly clamped to the two adjacent first links 102, it is not limited to this. In some embodiments, for example, the rear end (or front end) of the second link 103 can also be rotatably mounted to the front end (or rear end) of the first link 102 by riveting, and the front end (or rear end) of the second link 103 is provided with a fourth clamping portion 121, and is rotatably clamped to the third clamping portion 119 of the first link 102 located at the front end side (or rear end side) thereof.

[0074] In addition, the second link 103 can also be configured in a connecting rod shape, and one second link 103 is respectively configured on one side of the second wall portion 110 of the first link 102, thereby the first link 102 can be floatingly pulled on both sides of two adjacent first links 102.

[0075] Fig. 9 is a partial schematic diagram of the load-bearing chain 100a, referring to Fig. 9 In some embodiments, in order to further improve the bearing strength of the load-bearing chain 100a, the link group 200 may include one or more groups. When the link group 200 includes multiple groups, each link group 200 is arranged in parallel and spaced apart along the width direction of the load-bearing base belt 101.

[0076] Fig.10 is a perspective view of the drag chain 124 of the second aspect of the present invention, referring to Fig.10 , the above-mentioned load-bearing chain 100 can be appropriately deformed and directly used as a drag chain 124. For example, the drag chain 124 according to the embodiment of the second aspect of the present invention is used to store cables 125, and includes: a load-bearing base belt 101, a plurality of first links 102 and a plurality of second links 103. Among them, the load-bearing base belt 101 can be bent along its length direction. The first link 102 is installed to the load-bearing base belt 101 and can float relative to the load-bearing base belt 101. The first link 102 is distributed along the length direction of the load-bearing base belt 101. The first link 102 is provided with a groove 126 with an opening toward the load-bearing base belt 101, so as to form a storage space 127 for storing cables 125 with the load-bearing base belt 101. The second link 103 is distributed along the length direction of the load-bearing base belt 101, and one second link 103 is respectively connected to two adjacent first links 102, and can float relative to at least one of them. When a portion of the carrier base tape 101 is in a bent state, the second chain link 103 located at the bent position 104 of the carrier base tape 101 pulls the two first chain links 102 connected thereto.

[0077] In this embodiment, since the first link 102 is provided with a groove 126, a storage space 127 for storing the cable 125 can be formed between the first link 102 and the bearing base belt 101, so it can be directly used as a drag chain 124 for storing the cable 125. In addition, since the bearing base belt 101 for installing the first link 102 is provided, the bearing strength of the drag chain 124 can be greatly improved.

[0078] It is conceivable that the first link 102 may be directly configured into a U-shape to form the groove 126 .

[0079] It is conceivable that the cable 125 can be a flexible member known in the art, such as an electrical cable and an air pipe.

[0080] Fig.11 is a three-dimensional diagram of a dust-free drag chain 128 according to the third aspect of the present invention. Fig.11 In order to facilitate illustration, only a portion of the sheath 129 is shown. Fig.11 , the above-mentioned load-bearing chain 100 can be used in the dust-free drag chain 128. The dust-free drag chain 128 according to the third aspect of the present invention is used to store the cable 125, and includes: a long sheath 129 and the above-mentioned load-bearing chain 100. Among them, the sheath 129 is a flexible member, and a storage cavity 130 is provided in the sheath 129. The storage cavity 130 extends along the length direction of the sheath 129, and the cable 125 is stored in the storage cavity 130. In addition, the load-bearing chain 100 is also stored in the storage cavity 130 and supports the sheath 129.

[0081] In this embodiment, since the load-bearing chain 100 used to support the dust-free drag chain 128 is provided with a load-bearing base belt 101 for installing the first chain link 102 , the load-bearing strength of the load-bearing chain 100 can be greatly improved, thereby improving the load-bearing strength of the dust-free drag chain 128 .

[0082] It is conceivable that the cable 125 and the load-bearing chain 100 can also be simultaneously stored in one storage cavity 130. In addition, it is conceivable that the storage cavity 130 can also be divided into a first cavity 131 for storing the cable 125 and a second cavity 132 for storing the load-bearing chain 100. The number of the first cavity 131 and the second cavity 132 can be specifically set as needed.

[0083] It is conceivable that, as a flexible member, the sheath 129 can be made of a material such as silicone, rubber, etc., which has good toughness, high elasticity and wear resistance.

[0084] It is conceivable that mounting fixtures 133 may be provided at both ends of the dust-free drag chain 128 in the length direction to facilitate its installation on the equipment.

[0085] The above is a detailed description of the embodiments of the invention in conjunction with the accompanying drawings, but the invention is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the invention. In addition, the embodiments of the invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. Load-bearing chain, used for carrying drag chain, characterized in that: include: A carrier base tape that can be bent along its length; A chain link group is arranged on the carrier base belt, and the chain link group has: a plurality of first chain links, wherein the first chain links are mounted to the carrier base and are floatable relative to the carrier base, and the first chain links are distributed along the length direction of the carrier base, a plurality of second chain links, wherein the second chain links are distributed along the length direction of the carrier base belt, and one of the second chain links connects two adjacent first chain links respectively and is floatable relative to at least one of the two adjacent first chain links; When a part of the carrier base belt is in a bent state, the second chain link located at the bent position of the carrier base belt pulls the two first chain links connected thereto; The first chain links are respectively and buoyantly clamped to the carrier base belt, and a plurality of lugs are respectively formed on both sides of the carrier base belt in the width direction, and the lugs are protruding along the thickness direction of the carrier base belt, and one of the first chain links is respectively and buoyantly clamped between two lugs opposite to each other in the width direction of the carrier base belt; The front end of the second chain link can be floatingly clamped to the first chain link at the front end side thereof, and the rear end of the second chain link can be floatingly clamped to the first chain link at the rear end side thereof; When at least part of the carrier base is in a straight state, the rear end of one of the first chain links located in the straight position of the carrier base is at least partially in contact with the front end of another first chain link disposed behind it.

2. The load-bearing chain according to claim 1, characterized in that: The carrier base tape is a metal piece.

3. The load-bearing chain according to claim 1, characterized in that: It also includes a plurality of U-shaped connecting members, which are distributed along the length direction of the carrier base belt and are respectively installed on the carrier base belt to form the lug portions on both sides of the width direction of the carrier base belt.

4. The load-bearing chain according to claim 1, characterized in that: The first chain link is in a U shape, and second wall portions are respectively arranged on both sides of the first chain link. The second wall portions can be respectively and floatingly clamped to the two opposite lug portions along the width direction of the carrier base belt.

5. The load-bearing chain according to claim 1, characterized in that: The front end of the first link is provided with a first protrusion protruding forward; The rear end of the first link is provided with a first accommodation portion which is recessed toward the front end of the first link; Among the first links located at a straight position on the carrier base belt, a first protrusion of one of the first links abuts against a first receiving portion of another first link disposed in front of the first link.

6. The load-bearing chain according to claim 5, characterized in that: A second protrusion protruding toward the rear of the first chain link is provided at the rear end of the first chain link above the first accommodation portion; A second receiving portion is provided at the front end of the first link, above the first protrusion, and is recessed relative to the first protrusion and toward the rear end of the first link; Among the first links located in a straight position on the carrier base belt, when the first protrusion of one of the first links abuts against the first accommodation portion of another first link arranged in front of it, the second protrusion of the front first link abuts against the second accommodation portion of the rear first link.

7. The load-bearing chain according to claim 1, characterized in that: The second link is in a U shape.

8. The load-bearing chain according to claim 1, 5 or 6, characterized in that: When at least part of the carrier base is in a straight state, the rear end of one of the second chain links located in the straight position of the carrier base is at least partially in contact with the front end of another second chain link disposed behind it.

9. The load-bearing chain according to claim 1, characterized in that: The chain link groups include a plurality of groups, which are arranged in parallel and at intervals along the width direction of the carrier base belt.

10. Drag chain, used for storing cables, characterized in that: include: A carrier base tape that can be bent along its length; A chain link group is arranged on the carrier base belt, and the chain link group has: a plurality of first chain links, wherein the first chain links are mounted to the carrier base and are floatable relative to the carrier base, the first chain links are distributed along the length direction of the carrier base, and the first chain links are provided with grooves opening toward the carrier base to form a storage space for storing the cables with the carrier base. a plurality of second chain links, wherein the second chain links are distributed along the length direction of the carrier base belt, and one of the second chain links connects two adjacent first chain links respectively and is floatable relative to at least one of the two adjacent first chain links; When a part of the carrier base belt is in a bent state, the second chain link located at the bent position of the carrier base belt pulls the two first chain links connected thereto; The first chain links are respectively and buoyantly clamped to the carrier base belt, and a plurality of lugs are respectively formed on both sides of the carrier base belt in the width direction, and the lugs are protruding along the thickness direction of the carrier base belt, and one of the first chain links is respectively and buoyantly clamped between two lugs opposite to each other in the width direction of the carrier base belt; The front end of the second chain link can be floatingly clamped to the first chain link at the front end side thereof, and the rear end of the second chain link can be floatingly clamped to the first chain link at the rear end side thereof; When at least part of the carrier base is in a straight state, the rear end of one of the first chain links located in the straight position of the carrier base is at least partially in contact with the front end of another first chain link disposed behind it.

11. Dust-free drag chain, used for storing cables, characterized in that: include: A long strip-shaped sheath, the sheath is a flexible member, a storage cavity is provided in the sheath, the storage cavity extends along the length direction of the sheath, and the cable is stored in the storage cavity; The load-bearing chain according to any one of claims 1 to 9, wherein the load-bearing chain is received in the receiving cavity and supports the sheath.

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