A high-speed, high-load and silent drag chain

Abstract

The present invention provides a high-speed, high-load and silent drag chain, which is formed by splicing a plurality of chain links. Adjacent two chain links are rotationally connected through a connecting shaft assembly. The chain link includes: a chain link body; an elastic member, which is detachably mounted on the chain link body and is elastically deformed under pressure when adjacent two chain link bodies rotate. Since the elastic member can adopt a material with better elasticity, when the drag chain moves at high speed, the elastic member can provide a large buffering force, thereby achieving silence. In addition, when the elastic member is damaged, it can be replaced separately, reducing the maintenance cost; the elastic member has a first deformation state driven by the chain link body and moving towards the direction close to another chain link body, and a second deformation state of continuing to deform after abutting against another chain link body, that is, the elastic member can buffer the impact force of the drag chain twice. Compared with the prior art, the silent effect is better, and the V-shaped or O-shaped second elastic part has the advantages of simple structure and low production cost.

Description

Technical Field

[0001] The present invention relates to the technical field of drag chains, and particularly to a high-speed, high-load and silent drag chain. Background Art

[0002] Drag chains are applicable to occasions with reciprocating motion and are widely used in the fields of automated equipment such as numerical control machine tools, robotic arms, lifting and transportation equipment, and automated warehouses. They can play a role in towing and protecting the built-in cables, oil pipes, gas pipes, water pipes, etc.

[0003] A drag chain is formed by splicing a plurality of chain links, and two adjacent chain links can rotate relative to each other. The limiting block of one chain link is inserted into the limiting groove of the other chain link. The limiting groove is used to define the rotation trajectory of the limiting block. When the drag chain reciprocates at a high speed, the limiting block will impact the inner walls on both sides of the limiting groove, thereby generating noise.

[0004] To solve the above problems, generally, plastic elastic pieces are integrally formed near the two side walls of the limiting groove. The plastic elastic pieces can elastically abut against the limiting block, thereby buffering the impact force and achieving noise reduction to a certain extent. However, since the plastic elastic pieces are integrally formed with the chain link body, that is, the materials of the two are the same. To ensure that the drag chain can achieve high load, the material strength needs to be relatively large, but in this case, the elasticity will be insufficient, resulting in a general noise reduction effect of the plastic elastic pieces. In addition, after long-term use, the plastic elastic pieces are prone to breakage, resulting in the need to replace the entire chain link, which increases the maintenance cost. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects of general noise reduction effect and high maintenance cost of the existing drag chains, so as to provide a high-speed, high-load and silent drag chain with good noise reduction effect and low maintenance cost.

[0006] For this purpose, the present invention provides a high-speed, high-load and silent drag chain, which is formed by splicing a plurality of chain links. Two adjacent chain links are rotationally connected through a connecting shaft assembly. The chain link includes a chain link body and an elastic member. The elastic member is detachably mounted on the chain link body and is elastically deformed under pressure when two adjacent chain link bodies rotate.

[0007] The elastic member has a first deformation state in which it is driven by the chain link body and moves towards the direction close to the other chain link body, and a second deformation state in which it continues to deform after abutting against the other chain link body.

[0008] The elastic member includes a first elastic part and a V-shaped or O-shaped second elastic part provided at the end of the first elastic part.

[0009] The elastic member includes an elastic main body, a first elastic arm and a second elastic arm respectively disposed on both sides of the elastic main body. When the link main body rotates clockwise relative to the other link main body, the first elastic arm is elastically deformed under pressure; when the link main body rotates counterclockwise relative to the other link main body, the second elastic arm is elastically deformed under pressure.

[0010] The elastic main body is detachably connected to the link main body through a plug-in structure. The plug-in structure includes a first slot disposed on one of the link main body and the elastic main body, and a plug block disposed on the other side and adapted to be connected with the first slot in a matching manner.

[0011] The elastic member is an elastic plastic part or a metal reed.

[0012] The connecting shaft assembly includes at least one connecting shaft disposed on one side of two adjacent link main bodies, and a mounting groove or a mounting hole disposed on the other side and adapted to be connected with the connecting shaft in a matching manner.

[0013] The connecting shaft is formed on the inner side surface of the link main body, and has a first slot adapted to mount the elastic member, and a through hole for the first elastic arm and the second elastic arm to extend out.

[0014] A snap structure is provided between two adjacent link main bodies. The snap structure includes a snap table disposed on one side of two adjacent link main bodies, and an elastic snap disposed on the other side and snap-connected with the snap table.

[0015] The link includes two relatively arranged link main bodies, and a baffle connecting the two link main bodies. One end of the baffle is connected to the link main body through a rotating shaft assembly, and the other end is snap-connected to the other link main body through a snap structure.

[0016] The rotating shaft assembly includes: two first rotating shaft parts disposed at the end of the baffle, and a first groove is provided between the two first rotating shaft parts; two second grooves are provided on the link main body and are adapted to be connected with the corresponding first rotating shaft parts in a matching manner, and a second convex block adapted to be inserted into the first groove in a matching manner is provided between the two second grooves; a first limiting structure is provided between the first groove and the second convex block. The first limiting structure includes a first limiting block disposed on the bottom wall of the first groove, and a first limiting groove disposed on the inner side surface of the second convex block and capable of limiting the movement track of the first limiting block.

[0017] The snap structure includes a snap block disposed on one of the baffle and the link main body, and a snap groove disposed on the other side and adapted to be connected with the snap block in a matching manner.

[0018] A second slot is provided on the link main body adjacent to the snap groove. When a screwdriver is inserted into the second slot, the baffle can be pried up.

[0019] A second limiting structure is provided between two adjacent link bodies. The second limiting structure includes second limiting blocks disposed on the outer side surface of the link body and on both sides of its rotation center, and third limiting blocks disposed on the outer side surface of the other link body and capable of abutting against the corresponding second limiting blocks. The technical solution of the present invention has the following advantages:

[0020] 1. For the high-speed, high-load and silent drag chain provided by the present invention, since the elastic member is detachably mounted on the link body, an elastic member with better elasticity can be used. In this way, when the drag chain moves at high speed, the elastic member can provide a large buffering force, thereby achieving silence. In addition, when the elastic member is damaged, it can be replaced separately, reducing the maintenance cost.

[0021] 2. For the high-speed, high-load and silent drag chain provided by the present invention, the elastic member has a first deformation state driven by the link body and moving towards the direction close to the other link body, and a second deformation state of continuing to deform after abutting against the other link body, that is, the elastic member can buffer the impact force of the drag chain twice, and has a better silent effect compared with the prior art.

[0022] 3. For the high-speed, high-load and silent drag chain provided by the present invention, the elastic member includes a first elastic part and a V-shaped or O-shaped second elastic part disposed at the end of the first elastic part. In the first deformation state, mainly the first elastic part elastically deforms to buffer the impact force. In the second deformation state, the V-shaped or O-shaped second elastic part can continue to deform to further buffer the impact force, thereby achieving silence. The above V-shaped or O-shaped second elastic part has the advantages of simple structure and low production cost.

[0023] 4. For the high-speed, high-load and silent drag chain provided by the present invention, the elastic body is detachably connected to the link body through a plugging structure. By providing a plug and a first slot, the elastic member is prevented from shifting relative to the link body, ensuring the buffering effect.

[0024] 5. For the high-speed, high-load and silent drag chain provided by the present invention, a buckle structure is provided between two adjacent link bodies, thereby locking the two link bodies, making the assembly more firm and improving the reliability.

[0025] 6. For the high-speed, high-load and silent drag chain provided by the present invention, the rotating shaft assembly includes a first rotating shaft part, a first groove, a second groove and a second convex block. During assembly, the first rotating shaft part is correspondingly plugged with the second groove, the second convex block and the first groove. The first limiting block on the bottom wall of the first groove is pressed into the first limiting groove under the pressing force of the hand and can move relative to the first limiting groove, thus preventing the retaining piece from separating from the link body (a certain external force is required to separate the two). The above rotating shaft assembly has the advantages of quick and convenient assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 The first schematic diagram of two adjacent linkages of the present invention;

[0028] Figure 2 is Figure 1 The sectional view of;

[0029] Figure 3 The second schematic diagram of two adjacent linkages;

[0030] Figure 4 is Figure 3 The first sectional view of;

[0031] Figure 5 The structural schematic diagram of the first embodiment of the elastic member;

[0032] Figure 6 The exploded schematic diagram of two adjacent linkages;

[0033] Figure 7 is Figure 3 The second sectional view of;

[0034] Figure 8 The assembly schematic diagram of the elastic member (the second embodiment) and the linkage;

[0035] Figure 9 The structural schematic diagram of the second embodiment of the elastic member;

[0036] Figure 10 The assembly schematic diagram of the elastic member (the third embodiment) and the linkage;

[0037] Figure 11 The structural schematic diagram of the third embodiment of the elastic member;

[0038] Figure 12 The exploded structural schematic diagram of a single linkage;

[0039] Figure 13 The disassembly schematic diagram of the screwdriver and the linkage;

[0040] Figure 14 is Figure 13 The sectional view of;

[0041] Figure 15 The sectional view when the retaining piece is in the open state;

[0042] Figure 16 Exploded view of the baffle and the link body;

[0043] Figure 17 Stereogram of the link body;

[0044] Figure 18 Stereogram of the high-speed, high-load and silent drag chain.

[0045] Explanation of reference numerals: 1, link body; 10, mounting groove; 11, first slot; 12, connecting shaft; 13, buckling platform; 14, elastic buckle; 15, second groove; 16, second convex block; 17, first limiting groove; 18, clamping groove; 19, second slot; 2, elastic member; 20, elastic main body; 21, first elastic arm; 22, second elastic arm; 23, first elastic part; 24, second elastic part; 25, inserting block; 3, baffle; 31, first rotating shaft part; 32, first groove; 33, first limiting block; 34, clamping block; 4, second limiting block; 5, third limiting block; 6, first convex block; 7, baffle block. Detailed implementation manners

[0046] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0047] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0049] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] Embodiment

[0051] This embodiment provides a high-speed, high-load, silent drag chain, which is formed by splicing a plurality of chain links. Adjacent two of the chain links are rotationally connected through a connecting shaft assembly, as Figures 1-4 shown. The chain link includes a chain link body 1, an elastic member 2, and a retaining piece 3.

[0052] The elastic member 2 is detachably mounted on the inner side surface of the chain link body 1 and is elastically deformed under pressure when adjacent two of the chain link bodies 1 rotate. The elastic member 2 has a first deformation state (as Figure 2 shown) in which it is driven by the chain link body 1 and moves toward the direction close to another chain link body 1, and a second deformation state (as Figure 4 shown) in which it continues to deform after abutting against another chain link body 1. Since the elastic member 2 is mounted on the inner side surface of the chain link body 1, a hidden installation is realized, and the service life is prolonged.

[0053] The elastic member 2, as Figure 5 shown, includes an elastic main body 20, and a first elastic arm 21 and a second elastic arm 22 respectively arranged on both sides of the elastic main body 20. Among them, when the chain link body 1 rotates clockwise relative to another chain link body 1, the first elastic arm 21 is elastically deformed under pressure; when the chain link body 1 rotates counterclockwise relative to another chain link body 1, the second elastic arm 22 is elastically deformed under pressure. Both the first elastic arm 21 and the second elastic arm 22 include a first elastic part 23, and a V shape arranged at the end of the first elastic part 23. The elastic main body 20 is detachably connected to the chain link body 1 through a plug-in structure. The plug-in structure includes a first slot 11 arranged on one of the chain link body 1 and the elastic main body 20, and a plug 25 arranged on the other side and capable of being adaptively connected to the first slot 11. In this embodiment, the material of the elastic member 2 is made of DuPont PA66 in the United States, or a metal reed is used. One of the chain link bodies 1 has a first convex block 6 inserted into a groove of an adjacent chain link body 1. A retaining block 7 is arranged in the groove. Both the first elastic arm 21 and the second elastic arm 22 are arranged between the first convex block 6 and the retaining block 7 and are elastically deformed under the drive of the first convex block 6.

[0054] As a transformable embodiment, as Figure 8 and 9 shown, the second elastic part 24 is in an O shape.

[0055] As a transformable embodiment, as Figure 10 and 11As shown, the elastic member 2 is a metal reed, and the angle between the first elastic portion 23 and the second elastic portion 24 is an obtuse angle.

[0056] The link body 1 is rotatably connected to another adjacent link body 1 through a rotating shaft assembly. As Figure 6 and 7 shown, the connecting shaft assembly includes two connecting shafts 12 provided on one side of two adjacent link bodies 1, and a mounting groove or a mounting hole provided on the other side and adapted to be connected to the connecting shaft 12. By providing a double connecting shaft assembly, the assembly is more firm, which can greatly increase the load-bearing performance and overhead performance of the drag chain and achieve high-load operation. The connecting shaft 12 is formed on the inner side surface of the link body 1, and it has a first slot 11 adapted to mount the elastic member 2 and a through hole for the first elastic arm 21 and the second elastic arm 22 to extend out. A buckle structure is provided between two adjacent link bodies 1. The buckle structure includes a buckle platform 13 provided on one side of two adjacent link bodies 1, and an elastic buckle 14 provided on the other side and snap-connected to the buckle platform 13. In this embodiment, the material of the link body 1 is PA6 GF30. Since the link bodies 1 are connected by a rotating shaft assembly and the buffering is through the elastic member 2, the connection is more reliable and the load-bearing effect is good.

[0057] The baffle 3 is used to connect two oppositely arranged link bodies 1. One end of the baffle 3 is connected to the link body 1 through a rotating shaft assembly, and the other end is snap-connected to the other link body 1 through a buckle structure.

[0058] As Figures 13-17 shown, the rotating shaft assembly includes: two first rotating shaft portions 31 provided at the end of the baffle 3, and a first groove 32 is provided between the two first rotating shaft portions 31; two second grooves 15 are provided on the link body 1 and are adapted to be connected to the corresponding first rotating shaft portions 31, and a second convex block 16 that can be adapted to be inserted into the first groove 32 is provided between the two second grooves 15; a first limiting structure is provided between the first groove 32 and the second convex block 16. The first limiting structure includes a first limiting block 33 provided on the bottom wall of the first groove 32, and a first limiting groove 17 provided on the inner side surface of the second convex block 16 and capable of limiting the movement track of the first limiting block 33.

[0059] As Figure 14 and 15 shown, the buckle structure includes a clamping block 34 provided on one side of the baffle 3 and the link body 1, and a clamping groove 18 provided on the other side and adapted to be connected to the clamping block 34. A second slot 19 is provided on the link body 1 adjacent to the clamping groove 18. When a screwdriver is inserted into the second slot 19, the baffle 3 can be pried up.

[0060] A second limiting structure is provided between two adjacent link bodies 1. The second limiting structure includes second limiting blocks 4 provided on the outer side surface of the link body 1 and distributed on both sides of its rotation center, and third limiting blocks 5 provided on the outer side surface of the other link body 1 and capable of abutting against the corresponding second limiting blocks 4.

[0061] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A high-speed, high-load and silent drag chain is formed by splicing multiple chain links, and is characterized in that, Two adjacent ones of the said link sections are rotationally connected through a connecting shaft assembly, and the link section includes: A link body (1); An elastic member (2), detachably mounted on the link body (1), and elastically deformed under pressure when two adjacent link bodies (1) rotate; The elastic member (2) has a first deformation state driven by the link body (1) and moving towards the direction close to another link body (1), and a second deformation state of continuously deforming after abutting against another link body (1); The elastic member (2) includes an elastic main body (20), and a first elastic arm (21) and a second elastic arm (22) respectively arranged on both sides of the elastic main body (20). Wherein, when the link body (1) rotates clockwise relative to another link body (1), the first elastic arm (21) is elastically deformed under pressure; when the link body (1) rotates counterclockwise relative to another link body (1), the second elastic arm (22) is elastically deformed under pressure; Both the first elastic arm (21) and the second elastic arm (22) include a first elastic part (23), and a V-shaped or O-shaped second elastic part (24) is arranged at the end of the first elastic part (23); One of the link bodies (1) has a first convex block (6) inserted into a groove of an adjacent link body (1), a stop block (7) is arranged in the groove, and both the first elastic arm (21) and the second elastic arm (22) are arranged between the first convex block (6) and the stop block (7), and are elastically deformed by the drive of the first convex block (6).

2. The high-speed, high-load, silent drag chain according to claim 1, characterized in that, The elastic main body (20) is detachably connected to the link body (1) through a plugging structure, and the plugging structure includes a first slot (11) arranged on one of the link body (1) and the elastic main body (20), and a plug (25) arranged on the other side and capable of being adaptively connected to the first slot (11).

3. The high-speed and high-load silent drag chain according to claim 1, characterized in that, The elastic member (2) is an elastic plastic part or a metal reed piece.

4. The high-speed and high-load silent drag chain according to claim 1, wherein The connecting shaft assembly includes at least one connecting shaft (12) arranged on one of two adjacent link bodies (1), and a mounting groove (10) or a mounting hole arranged on the other side and adaptively connected to the connecting shaft (12).

5. The high-speed and high-load silent drag chain according to claim 4, wherein The connecting shaft (12) is formed on the inner side surface of the link body (1), and it has a first slot (11) suitable for mounting the elastic member (2), and a through hole for the first elastic arm (21) and the second elastic arm (22) to extend out.

6. The high-speed, high-load, silent drag chain according to claim 1, characterized in that, A snap structure is arranged between two adjacent link bodies (1), and the snap structure includes a snap table (13) arranged on one of two adjacent link bodies (1), and an elastic snap (14) arranged on the other side and snap-connected to the snap table (13).

7. The high-speed and high-load silent drag chain according to claim 1, wherein, The link section includes two oppositely arranged link bodies (1), and a baffle (3) connecting the two link bodies (1). One end of the baffle (3) is connected to the link body (1) through a rotating shaft assembly, and the other end is snap-connected to another link body (1) through a snap structure.

8. The high-speed, high-load and silent drag chain according to claim 7, wherein, The rotating shaft assembly includes: Two first rotating shaft parts (31) are provided at the end of the baffle (3), and a first groove (32) is provided between the two first rotating shaft parts (31); Two second grooves (15) are provided on the link body (1) and are adaptively connected to the corresponding first rotating shaft parts (31). A second convex block (16) that can be adaptively inserted into the first groove (32) is provided between the two second grooves (15); A first limiting structure is provided between the first groove (32) and the second convex block (16). The first limiting structure includes a first limiting block (33) provided on the bottom wall of the first groove (32), and a first limiting groove (17) provided on the inner side surface of the second convex block (16) and capable of limiting the movement track of the first limiting block (33).

9. The high-speed and high-load silent drag chain according to claim 7, wherein, The buckle structure includes a block (34) provided on one of the baffle (3) and the link body (1), and a clamping groove (18) provided on the other side and adaptively connected to the block (34).

10. The high-speed and high-load silent drag chain according to claim 9, characterized in that, A second slot (19) adjacent to the clamping groove (18) is provided on the link body (1). When a screwdriver is inserted into the second slot (19), the baffle (3) can be pried up.

11. The high-speed, high-load, silent drag chain according to claim 1, characterized in that, A second limiting structure is provided between two adjacent link bodies (1). The second limiting structure includes second limiting blocks (4) provided on the outer side surface of the link body (1) and distributed on both sides of its rotation center, and third limiting blocks (5) provided on the outer side surface of the other link body (1) and capable of abutting against the corresponding second limiting blocks (4).

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