Efficient mute drag chain

Abstract

The utility model relates to the field of automatic production and application of machine tools, in particular to an efficient mute drag chain which comprises a head chain link, a plurality of main and auxiliary chain link assemblies and a tail chain link which are sequentially connected in a ring-to-ring mode. The head chain link is provided with a main rotating shaft; the main and auxiliary chain link assemblies comprise main chain links and auxiliary chain links; the first chain link is provided with a first groove; the main chain link and the auxiliary chain link are each provided with a second cylinder and a second groove. The tail chain link is provided with a first cylinder; the second cylinder on the main chain link is inserted into the first groove in a sliding manner; the second cylinders on the auxiliary chain links are inserted into the second grooves in the main chain links in a sliding mode. And the first cylinders are inserted into the second grooves in the auxiliary chain links in a sliding manner, so that the whole-course silence of the adjacent chain links in the rotating process is realized, and the noise caused by collision generated when the corresponding chain links are in place is reduced.

Description

Technical Field

[0001] The utility model relates to the field of machine tool automation production applications, and particularly relates to an efficient silent drag chain. Background Technique

[0002] A drag chain is a relatively commonly used industrial production auxiliary device. This device is used for reciprocating motion and is applied in related fields such as electricity and energy. Especially for objects such as cables and pipelines involved in power supply, oil supply, gas supply, etc., they need to move reciprocally during the production process. As an auxiliary protection device, the drag chain internally installs these cables and air pipes to play a protective role. Due to the influence of the self-structure design of the drag chain, it is generally formed by multiple chain links hinged together in a ring to form a traction or protective closed-loop structure. During the cooperation of various chain links, a limiting structure is designed between adjacent chain links, and the rotatable angle between adjacent chain links is restricted and constrained. To ensure that the protected lines inside the drag chain do not have adverse effects such as folding, the whole drag chain has a certain curvature during the turning process. The existing conventional limiting structure is mainly based on the blocking positions set between two adjacent chain links, which are connected to each other by restraint. When the rotation angle of a single link reaches the design upper limit, the link can no longer turn, thus forming a fixed body. It should be noted that during the rotation of the link, due to the certain length of the entire drag chain, according to the actual production condition requirements, the longer the length, the more chain links are connected. When the drag chain moves, the drag chain transmits motion sequentially through adjacent chain links and has a certain degree of guiding property. During this process, when the link rotates, there will be a certain rotational deformation and rotation, and when the link rotates to the maximum angle, there will be an impact noise generated by the impact between adjacent chain links. With the development of high-standard industrial production, more and more production requirements need noise-free production.

[0003] As a drag chain that undergoes long-term cyclic reciprocating motion, it has a high demand for silent performance. The main sources of impact and noise during the use of the drag chain are: the impact sound and vibration when the link rotates to the maximum angle and when it returns from the maximum angle to the initial angle.

[0004] At present, the general conventional method is to set auxiliary devices such as buffer blocks on the contact surfaces of the chain links. For a high-speed silent shock-absorbing drag chain proposed in an article with the application number CN21878512U, it will occur during the actual production and use process. When the adjacent hinges start to move, since the lengthened chain links are in non-linear rotation within the moving space, during the process of the chain links starting to move slightly, the silent device cannot achieve the functions of silencing and shock absorption. The starting moving parts of each chain link cannot fully implement silence, that is, silence cannot be achieved throughout the entire moving process. Moreover, during the high-speed and high-frequency movement of the drag chain, this kind of noise will be amplified. At present, with the large-scale application of digital automation and the substantial increase in production scale, there is a large demand for batch and standardized equipment production, and the requirements for the process environment of the production link are very high. Summary of the Invention

[0005] To solve the problems mentioned in the above background technology, the present invention adopts an efficient silent drag chain. In order to achieve full silence during the rotation of adjacent chain links and the noise caused by the collision when the corresponding chain links reach their positions, an efficient silent drag chain includes a first chain link, a plurality of main and auxiliary chain link components, and a tail chain link that are connected in sequence in a ring; the first chain link is provided with a main rotating shaft; the plurality of main and auxiliary chain link components include a main chain link and an auxiliary chain link; both the main chain link and the auxiliary chain link are provided with a main rotating shaft and a main rotating shaft hole; the tail chain link is provided with a main rotating shaft hole, the main rotating shaft of the first chain link is lapped on the main rotating shaft hole of the main chain link, the main rotating shaft hole on the main chain link is lapped on the main rotating shaft of the auxiliary chain link, and the main rotating shaft hole on the tail chain link is lapped on the main rotating shaft of the auxiliary chain link; the first chain link is provided with a first groove; both the main chain link and the auxiliary chain link are provided with a second cylinder and a second groove; the tail chain link is provided with a first cylinder; the second cylinder on the main chain link is slidably inserted into the first groove; the second cylinder on the auxiliary chain link is slidably inserted into the second groove on the main chain link; the first cylinder is slidably inserted into the second groove on the auxiliary chain link.

[0006] By adopting the rotation method of the cylindrical sliding friction groove, a damping and sound-absorbing structure is formed to further improve the silent performance of the drag chain.

[0007] Preferably, a second rotation limiting block is provided near the first cylinder on the tail chain link; a first rotation limiting block is provided at the relative position of the second rotation limiting block; fourth rotation limiting blocks are provided near the second cylinder on both the main chain link and the auxiliary chain link, and third rotation limiting blocks are provided at the relative positions of the fourth rotation limiting blocks.

[0008] Preferably, the tail chain link is provided with a first through hole groove around the first cylinder; both the main chain link and the auxiliary chain link are provided with second through hole grooves around the second cylinder.

[0009] Preferably, it further includes a plurality of cross baffles; clamping grooves are provided on both sides in the length direction of the cross baffles; the first link, a plurality of main and sub-link assemblies and the last link are provided in two rows and are connected by clamping through the clamping grooves; reinforcing ribs are further provided in the grooves in the length direction of the cross baffles.

[0010] Preferably, the first link is provided with a first boss; the main link and the sub-link are both provided with second bosses; the last link is provided with a third boss; when the first link, a plurality of main and sub-link assemblies and the last link rotate, the first boss, the second boss and the third boss are used to limit the rotation angle of each other.

[0011] Preferably, the first link and the last link are both provided with square grooves, and a plurality of connecting pieces are clamped on the periphery of the square grooves.

[0012] Compared with the prior art, the utility model provides an efficient silent drag chain, which has the following beneficial effects:

[0013] Through practical design, during the running and moving process of adjacent links, during the in-place contact and the process of the link starting to move from rest, the sliding friction generated by the cylinder offsets the movement collision between the lengthened link and the fixed joint link. A boss is provided on the link. When the link rotates to the maximum rotation angle position, the edges of the bosses of adjacent links will come into contact, realizing the noise generated by the impact from the start to the maximum rotation angle position during the running process of the link. To a certain extent, the mutual collision energy of the main and sub-links is greatly weakened, achieving the effect of silent operation, realizing the whole process silent operation of adjacent links during rotation and the noise generated by the collision when the corresponding link is in place; by adopting the rotation mode of the cylindrical sliding friction groove, a damping and sound-absorbing structure is formed, which can realize convenient production, and at the same time, there is no need to additionally increase structural devices, improving the stability of the product. Description of the Drawings

[0014] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0015] Figure 1 is a three-dimensional view of an embodiment of the utility model.

[0016] Figure 2 is a three-dimensional view of the first link of an embodiment of the utility model.

[0017] Figure 3 is an exploded view of the front of the main and sub-link assembly of the utility model.

[0018] Figure 4 is an exploded view of the back of the main and sub-link assembly of the utility model.

[0019] Figure 5 This is a perspective view of the tail link of the embodiment of the present utility model.

[0020] Figure 6 This is a perspective view of the cross baffle of the embodiment of the present utility model.

[0021] Reference numerals

[0022] 1 - head link; 11 - main rotating shaft; 12 - first groove; 13 - first boss; 2 - main and sub-link assembly; 21 - main link; 211 - second cylinder; 212 - second groove; 213 - second through-hole groove; 214 - second boss; 22 - sub-link; 23 - main rotating shaft hole; 24 - third rotation limiting block; 25 - fourth rotation limiting block; 3 - tail link; 31 - first cylinder; 32 - first rotation limiting block; 33 - second rotation limiting block; 34 - first through-hole groove; 35 - third boss; 4 - cross baffle; 41 - clamping groove; 42 - reinforcing rib; 5 - square groove; 51 - connecting piece Detailed implementation manners

[0023] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0024] Generally, the components of the embodiments of the present utility model described and shown in the accompanying drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model.

[0025] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] In the description of the present utility model, 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 utility model 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 thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0027] It should be noted that the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. 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.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected" and "coupled" shall be construed broadly. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Such as Figures 1 to 4As shown, it includes a first link 1, a plurality of main and sub-link components 2, and a tail link 3 connected in sequence in a ring; the first link 1 is provided with a main rotating shaft 11, and the plurality of main and sub-link components 2 include a main link 21 and a sub-link 22; both the main link 21 and the sub-link 22 are provided with a main rotating shaft 11 and a main rotating shaft hole 23; the tail link 3 is provided with a main rotating shaft hole 23, the main rotating shaft 23 of the first link 1 is lapped on the main rotating shaft hole 23 on the main link 11, the main rotating shaft hole 23 on the main link 21 is lapped on the main rotating shaft 11 of the sub-link 22, and the main rotating shaft hole 23 on the tail link 3 is lapped on the main rotating shaft 11 of the sub-link 22; the first link 1 is provided with a first groove 12; both the main link 21 and the sub-link 22 are provided with a second cylinder 211 and a second groove 212; the tail link 3 is provided with a first cylinder 31; the second cylinder 211 on the main link 21 is slidably inserted into the first groove 12; the second cylinder 211 on the sub-link 22 is slidably inserted into the second groove 212 on the main link 21; the first cylinder 211 is slidably inserted into the second groove 212 on the sub-link 22. Through practical design, during the running and moving process of adjacent links, during the in-place contact and the process of the link starting from rest to starting to move, since the link is a small aggregate of motion units for the entire drag chain, for adjacent links, through the lap connection of the main rotating shaft 11 and the main rotating shaft hole 23 and relative rotation, for the noise and vibration generated during the rotation process, it is realized through the sliding friction between the upper and lower side edges of the first cylinder 31, the second cylinder 211 and the first groove 12, the second groove 212. The cylinder can be understood as a spherical column. During the movement process inside the activity space, it respectively contacts the upper and lower side edges of the activity space. Since the spherical column itself has certain good elasticity, during the movement process of the first link 1, the plurality of main and sub-link components 2, and the tail link 3, the sliding friction generated by the first cylinder 31 and the second cylinder 211 on the first groove 12 and the second groove 212 can offset the movement collision between the first link 1, the plurality of main and sub-link components 2, and the tail link 3. Through practical design, during the running and moving process of adjacent links, during the in-place contact and the process of the link starting from rest to starting to move, the sliding friction generated by the cylinder offsets the movement collision between the lengthened link and the fixed joint link. A convex platform is provided on the link. When the link rotates to the maximum rotation angle position, the edges of the convex platforms of adjacent links will come into contact, realizing the noise generated by the impact from the start to the maximum rotation angle position during the running process of the link, to a certain extent greatly weakening the mutual collision energy of the main and sub-links, achieving the effect of silent operation, and realizing the full silent operation during the rotation of adjacent links and the noise generated by the collision when the corresponding link is in place; by adopting the rotation method of the cylinder sliding friction groove, a damping and sound-absorbing structure is formed, which can realize convenient production, and at the same time does not require additional structural devices, improving the stability of the product.

[0030] As Figure 5 shown, a second rotation limiting block 33 is provided near the position of the first cylinder 31 on the tail link 3; a first rotation limiting block 32 is provided at the relative position of the second rotation limiting block 33; a fourth rotation limiting block 25 is provided near the position of the second cylinder 211 on the main link 21 and the sub-link 22, and a third rotation limiting block 24 is provided at the relative position of the fourth rotation limiting block 25. By adopting the above-mentioned solution of multiple limiting block structures, it plays a role in limiting the rotation angle of adjacent links, further improving the rotation stability of the drag chain; a first through-hole groove 34 is provided on the tail link 3 around the first cylinder 31; a second through-hole groove 213 is provided on both the main link 21 and the sub-link 22 around the second cylinder 211.

[0031] As Figure 1 、 Figure 6 shown, it further includes a plurality of cross baffles 4; clamping grooves 41 are provided on both sides in the length direction of the cross baffles 4; the first link 1, a plurality of main and sub-link assemblies 2 and the tail link 3 are provided in two rows and are connected by clamping through the clamping grooves 41; reinforcing ribs 42 are further provided in the grooves in the length direction of the cross baffles 4. By providing the reinforcing ribs 42, the cross baffles 4 are prevented from deforming due to being too long, improving the compressive strength of the cross baffles 4, thereby improving the reliability of the drag chain.

[0032] As Figures 1 to 5 shown, the first link 1 is provided with a first boss 13; the main link 21 and the sub-link 22 are both provided with a second boss 214; the tail link 3 is provided with a third boss 35; when the first link 1, a plurality of main and sub-link assemblies 2 and the tail link 3 rotate; the first boss 12, the second boss 214 and the third boss 35 are used to limit the rotation angle of each other. By providing bosses on the links, when the link rotates to the maximum rotation angle position, the edges of the bosses of adjacent links will come into contact; both the first link 1 and the tail link 3 are provided with square grooves 5, and a plurality of connecting pieces 51 are clamped on the periphery of the square grooves 5, and the position of the drag chain is fixed through the connecting pieces 51.

[0033] The above description shows and describes several preferred embodiments of the present invention. However, as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the technology or knowledge in related fields. And the changes and alterations made by those skilled in the art without departing from the spirit and scope of the present invention should all be within the protection scope of the appended claims of the present invention.

Claims

1. An efficient silent drag chain, comprising a first chain link, a plurality of main and auxiliary chain link components and a tail chain link that are sequentially connected in a ring; characterized in that: The first link is provided with a main rotating shaft; a plurality of main and sub-link components include a main link and a sub-link; both the main link and the sub-link are provided with a main rotating shaft and a main rotating shaft hole; the tail link is provided with a main rotating shaft hole, the main rotating shaft of the first link is lapped on the main rotating shaft hole on the main link, the main rotating shaft hole on the main link is lapped on the main rotating shaft of the sub-link, and the main rotating shaft hole on the tail link is lapped on the main rotating shaft of the sub-link; the first link is provided with a first groove; both the main link and the sub-link are provided with a second cylinder and a second groove; the tail link is provided with a first cylinder; the second cylinder on the main link is slidably inserted into the first groove; the second cylinder on the sub-link is slidably inserted into the second groove on the main link; the first cylinder is slidably inserted into the second groove on the sub-link.

2. The high-efficiency silent drag chain according to claim 1, characterized in that: A second rotation limiting block is provided at a position close to the first cylinder on the tail link; a first rotation limiting block is provided at a relative position of the second rotation limiting block; fourth rotation limiting blocks are provided at positions close to the second cylinder on both the main link and the sub-link, and third rotation limiting blocks are provided at relative positions of the fourth rotation limiting blocks.

3. The high-efficiency silent drag chain according to claim 1, characterized in that: The tail link is provided with a first through-hole groove around the first cylinder; both the main link and the sub-link are provided with a second through-hole groove around the second cylinder.

4. The high-efficiency silent drag chain according to claim 1, characterized in that: It further includes a plurality of cross baffles; clamping grooves are provided on both sides in the length direction of the cross baffles; the first link, a plurality of main and sub-link components, and the tail link are provided in two rows and are connected by clamping through the clamping grooves; reinforcing ribs are further provided in the grooves in the length direction of the cross baffles.

5. The high-efficiency silent drag chain according to claim 1, wherein: The first link is provided with a first boss; both the main link and the sub-link are provided with a second boss; the tail link is provided with a third boss; when the first link, a plurality of main and sub-link components, and the tail link rotate; the first boss, the second boss, and the third boss are used to limit the rotation angle of each other.

6. The high-efficiency silent drag chain according to claim 1, wherein: Both the first link and the tail link are provided with square grooves, and a plurality of connecting pieces are clamped on the periphery of the square grooves.

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