Chain link connecting structure capable of achieving mute whole operation process based on double-elastic-sheet structure

Abstract

The utility model relates to the technical field of drag chains, in particular to a chain link connecting structure capable of achieving silence in the whole operation process based on a double-elastic-sheet structure. Comprising a plurality of chain links which are in butt joint in sequence, first elastic pieces connected between every two adjacent chain links, and second elastic pieces arranged on the chain links and used for buffering and abutting the adjacent chain links. The first elastic pieces can play an effective buffering role, due to the elastic deformation characteristic of the first elastic pieces, relative rotation between the adjacent chain links can be conducted stably, noise generated by friction and collision is greatly reduced, and a quiet and comfortable atmosphere is brought to the working environment. When the two adjacent chain links rotate to the final position, the elastic buffering effect of the second elastic pieces and the limiting protrusions starts to play a role. The elastic contact can absorb and disperse impact force, noise generated by hard collision is avoided, and the mute performance of the drag chain at the final position is further enhanced. And the two parts are combined, so that the drag chain can keep an excellent mute effect in the whole operation process.

Description

Technical Field

[0001] The utility model relates to the technical field of drag chains, in particular to a link connection structure that realizes silent operation throughout the whole process based on a double elastic sheet structure. Background Art

[0002] As a component widely used in mechanical equipment, the main function of a drag chain is to protect pipelines such as cables, air pipes, and oil pipes, and enable them to move orderly along with the movement of the equipment during the movement of the equipment. However, existing drag chains often cannot effectively achieve silent shock absorption during the rotation of the links and when the rotation is about to reach the final position; during the rotation of the links, due to the friction, collision between various components and the vibration generated by mechanical movement, a relatively large noise will be generated. This noise will not only interfere with the working environment, affect the work efficiency and physical and mental health of operators, but also may become an important factor restricting its application in some occasions with strict noise requirements, such as laboratories, medical equipment and other environments; at the same time, when the link rotation is about to reach the final position, existing drag chains are also difficult to achieve good shock absorption effects. This may cause a relatively large impact force on the connection part between the drag chain and the equipment, thereby affecting the stability and service life of the equipment. Moreover, the lack of effective shock absorption measures may also cause the pipelines to be excessively vibrated inside the drag chain, increasing the risk of pipeline damage. In view of this, it is necessary to propose an improved technical solution to solve the above problems. Summary of the Utility Model

[0003] The utility model aims to provide a technical solution that can solve the above problems to overcome the above deficiencies.

[0004] A link connection structure that realizes silent operation throughout the whole process based on a double elastic sheet structure, including a plurality of sequentially butted links, a first elastic sheet connected between adjacent two links, and a second elastic sheet arranged on each link and having a buffering and abutting effect on adjacent links, wherein:

[0005] Upper step structures that are normally abutted and matched with each other are arranged at the upper positions of the butting parts of adjacent two links, lower step structures that are normally abutted and matched with each other are arranged at the lower positions of the butting parts of adjacent two links, and a limiting block and a limiting groove that are slidably matched with each other are arranged between the upper step structures and between the lower step structures of adjacent two links. The limiting block can slide along the limiting groove in the arc direction, and the center of the sliding track is located on the central axis between the adjacent two links;

[0006] Card slots are opened at the middle positions of the butting parts of adjacent two links, and both ends of the first elastic sheet are clamped and matched with the card slots of adjacent two links, so that adjacent two links can rotate along the central axis between adjacent two links through the elastic deformation of the first elastic sheet;

[0007] The second elastic piece is arranged on one of the limiting blocks, and a limiting protrusion for abutting against the second elastic piece is arranged in the limiting groove corresponding to the limiting block provided with the second elastic piece. The abutting fit between the limiting protrusion and the second elastic piece is used to limit the sliding stroke of the limiting block.

[0008] Preferably, the direction in which the normal directions of the upper stepped portions of two adjacent chain links abut against each other is opposite to the direction in which the normal directions of the lower stepped portions of the adjacent chain links abut against each other.

[0009] Preferably, at the bottom end of the card slot, the two ends of the first elastic piece are respectively formed with first expansion portions matching the bottom end of the card slot, and the first elastic piece is fixedly clamped to the chain link through the cooperation between the first expansion portions and the bottom end of the card slot.

[0010] Preferably, a deformation accommodating groove is formed at the middle position of the butt joint of two adjacent chain links, so that the middle part of the first elastic piece can deform flexibly in the deformation accommodating groove, and the card slot is arranged along the inside of the deformation accommodating groove.

[0011] Preferably, a special-shaped groove is formed in the limiting block provided with the second elastic piece, a clamping portion larger than its opening is formed inside the special-shaped groove, one end of the second elastic piece is formed with a second expansion portion matching the clamping portion, and the second elastic piece is fixedly clamped on the limiting block through the cooperation between the second expansion portion and the special-shaped groove. Moreover, the other end of the second elastic piece extends out of the outside of the limiting block along the opening of the special-shaped groove, and the end of the second elastic piece extending out of the outside of the limiting block elastically abuts against the limiting protrusion.

[0012] Preferably, there are two limiting protrusions against which each second elastic piece elastically abuts.

[0013] Preferably, the structural cooperation among the chain link, the first elastic piece and the second elastic piece is set such that when the first elastic piece remains in a non-deformed state, the second elastic piece elastically abuts against one of the limiting protrusions.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] Through the structural arrangement of the first elastic piece and the second elastic piece, during the rotation of the chain link, the first elastic piece can play an effective buffering role. Due to the elastic deformation characteristics of the first elastic piece, the relative rotation between adjacent chain links can proceed smoothly, greatly reducing the noise generated by friction and collision, and bringing a quiet and comfortable atmosphere to the working environment. When the rotation of two adjacent chain links is about to reach the final position, the elastic buffering effect between the second elastic piece and the limiting protrusion starts to take effect. This elastic contact can absorb and disperse the impact force, avoiding the noise generated by hard collision, and further enhancing the sound insulation performance of the drag chain at the final position. The combination of the two enables the drag chain to maintain excellent sound insulation effect throughout the operation process, meeting the requirements of various noise-sensitive application scenarios.

[0016] During the rotation of the chain link, the first spring clip not only plays a silent role, but also absorbs and alleviates the vibration caused by mechanical movement through its own elastic deformation, which helps to reduce the impact of vibration on the pipeline inside the drag chain, reduce the risk of pipeline damage, and increase the service life of the pipeline; the elastic buffering of the second spring clip and the limiting protrusion when the chain link rotates to the final position can effectively reduce the impact force on the connection between the drag chain and the equipment, which enhances the stability of the equipment, reduces equipment failures and wear caused by vibration, and provides a guarantee for the long-term stable operation of the equipment.

[0017] The first spring piece takes into account the connection function between two adjacent chain links. It is clamped in the clamping groove of the adjacent chain link. The connection method is simple and reliable. While ensuring the connection strength, it allows relative rotation between the chain links, providing support for the flexible movement of the drag chain; the normal cooperation of the upper step structure and the lower step structure, as well as the sliding cooperation of the limit block and the limit groove, provide multiple guarantees for the connection of the chain links. These structures restrict each other to ensure that the chain links will not easily detach or dislocate during movement, thereby improving the overall reliability of the drag chain.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a schematic diagram of the structure of the chain link of the utility model in a normal state;

[0021] Figure 2 It is a schematic diagram of the structure of the utility model when the chain link is in a bent state;

[0022] Figure 3 This utility model Figure 2 The structural diagram at A in the middle;

[0023] Figure 4 It is a structural schematic diagram of a viewing angle of the utility model in a disassembled state;

[0024] Figure 5 It is a structural schematic diagram of another viewing angle of the utility model in a disassembled state.

[0025] The reference numerals and names in the figures are as follows:

[0026] Link 10, upper step structure 11, lower step structure 12, limit block 13, limit groove 14, card slot 15, limit protrusion 16, deformation accommodation groove 17, special-shaped groove 18, clamping portion 19, first elastic piece 20, first expansion portion 21, second elastic piece 30, second expansion portion 31. Specific implementation mode

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figures 1-5 , in the embodiments of the present invention, a link connection structure that realizes silent operation throughout the process based on a double elastic piece structure is proposed, including a plurality of sequentially docked links 10, a first elastic piece 20 connected between two adjacent links 10, and a second elastic piece 30 provided on each link 10 and acting as a buffer and abutting against the adjacent link 10. Among them:

[0029] Upper step structures 11 that are in normal abutting and cooperating with each other are provided at the upper positions of the docking parts of two adjacent links 10, lower step structures 12 that are in normal abutting and cooperating with each other are provided at the lower positions of the docking parts of two adjacent links 10, and limit blocks 13 and limit grooves 14 that are in sliding cooperation with each other are provided between the upper step structures 11 and between the lower step structures 12 of two adjacent links 10. The limit block 13 can slide along the limit groove 14 in the arc direction, and the center of the circle corresponding to its sliding trajectory is located on the central axis between two adjacent links 10;

[0030] Card slots 15 are provided at the middle positions of the docking parts of two adjacent links 10. The two ends of the first elastic piece 20 are respectively in clamping cooperation with the card slots 15 of two adjacent links 10, so that two adjacent links 10 can rotate along the central axis between two adjacent links 10 through the elastic deformation of the first elastic piece 20;

[0031] The second elastic piece 30 is provided on one of the limit blocks 13, and a limit protrusion 16 for abutting against the second elastic piece 30 is provided in the limit groove 14 corresponding to the limit block 13 provided with the second elastic piece 30. The abutting cooperation between the limit protrusion 16 and the second elastic piece 30 is used to limit the sliding stroke of the limit block 13.

[0032] In the above technical solution, a connection structure of a link 10 is provided and applied to a silent drag chain. The adjacent two links 10 are initially butted by a normal fit of an upper step structure 11 and a lower step structure 12. On this basis, a double spring piece structure of a first spring piece 20 and a second spring piece 30 is further used to connect and buffer the adjacent two links 10. Among them, the first spring piece 20 is used to connect at the middle position between the adjacent two links 10, so that the adjacent two links 10 can relatively rotate by elastically deforming the first spring piece 20 on the basis of the restriction of the step structure.

[0033] Then, a structure of a limit block 13 and a limit groove 14 is provided. The limit block 13 and the limit groove 14 are in sliding fit, and the limit block 13 can slide along the arc direction of the limit groove 14. The center of the circle corresponding to its sliding track is located on the central axis between the adjacent two links 10. This sliding fit structure also reflects that the sliding directions of the limit block 13 and the limit groove 14 are normal to the directions against the upper step structure 11 and the lower step structure 12; on the basis of this setting, the second spring piece 30 is arranged on one of the limit blocks 13, and a limit protrusion 16 that can elastically abut against the second spring piece 30 is arranged in the limit groove 14, so that when the adjacent two links 10 are about to rotate to the final position, they can be elastically buffered by the second spring piece 30 and the limit protrusion 16.

[0034] To sum up, through the structural settings of the first spring piece 20 and the second spring piece 30, during the rotation of the link 10, the first spring piece 20 can play an effective buffering role. Due to the elastic deformation characteristics of the first spring piece 20, the relative rotation between the adjacent links 10 can proceed smoothly, greatly reducing the noise generated by friction and collision, and bringing a quiet and comfortable atmosphere to the working environment. When the adjacent two links 10 are about to rotate to the final position, the elastic buffering effect of the second spring piece 30 and the limit protrusion 16 begins to take effect. This elastic contact can absorb and disperse the impact force, avoiding the noise generated by hard collision, and further enhancing the silent performance of the drag chain at the final position. The combination of the two enables the drag chain to maintain an excellent silent effect throughout the operation process, meeting the requirements of various noise-sensitive application scenarios.

[0035] Moreover, during the rotation of the link 10, the first spring piece 20 not only plays a silent role, but also can absorb and relieve the vibration generated by mechanical movement through its own elastic deformation. This helps to reduce the vibration impact on the pipelines inside the drag chain, reduce the risk of pipeline damage, and improve the service life of the pipelines; the elastic buffering of the second spring piece 30 and the limit protrusion 16 when the link 10 rotates to the final position can effectively reduce the impact force on the connection part between the drag chain and the equipment, which enhances the stability of the equipment, reduces equipment failures and wear caused by vibration, and provides guarantee for the long-term stable operation of the equipment.

[0036] In addition, the first elastic piece 20 also serves as a connection between two adjacent link sections 10. It is snapped into the slot 15 of the adjacent link section 10, with a simple and reliable connection method. While ensuring the connection strength, it also allows relative rotation between the link sections 10, providing support for the flexible movement of the drag chain. The normal direction cooperation between the upper step structure 11 and the lower step structure 12, as well as the sliding cooperation between the limit block 13 and the limit slot 14, provide multiple guarantees for the connection of the link section 10. These structures restrict each other to ensure that the link section 10 will not easily break away or be misaligned during movement, improving the overall reliability of the drag chain.

[0037] Please refer to Figures 4-5 , based on the above technical solution, it is further proposed that the direction in which the normal directions of the upper step portions of two adjacent link sections 10 abut against each other is opposite to the direction in which the normal directions of the lower step portions of two adjacent link sections 10 abut against each other. When two adjacent link sections 10 are connected and moving, the upper step structure 11 and the lower step structure 12 respectively provide preliminary docking and restriction at the upper and lower positions. The direction in which the normal directions of the upper step portions abut against each other is opposite to the direction in which the normal directions of the lower step portions abut against each other, so that when the link section 10 is subjected to forces in different directions, the upper and lower step structures 12 can provide stable support and restriction from two opposite directions; providing a more stable connection and support for the link section 10. During the movement of the drag chain, it can effectively resist forces from different directions, reduce the swaying and misalignment between the link sections 10, and improve the overall stability of the drag chain. Therefore, this restriction in the opposite direction enables the link section 10 to better disperse stress when subjected to external force impacts, reducing the risk of damage caused by excessive local stress; and this special structural design enables the drag chain to adapt to more complex working environments and the action of forces in different directions. Whether it is moving in the horizontal or vertical direction, or being affected by external forces at different angles, the drag chain can maintain good performance; for some special application scenarios, such as equipment that needs to frequently change the movement direction or is subjected to multi-directional forces, the drag chain with this structure has higher reliability and adaptability; in addition, the stable structure and good sound insulation effect reduce the wear and damage of the internal components of the drag chain. The elastic buffering effect of the first elastic piece 20 and the second elastic piece 30, as well as the stable support of the upper and lower step structures 12, reduce the impact and friction between the link sections 10, extending the service life of the drag chain; at the same time, reducing the fatigue damage caused by noise and vibration, further improving the durability of the drag chain.

[0038] Please refer to Figures 1-5, on the basis of the above technical solution, it is further proposed that the bottom end of the card slot 15 is expanded. The two ends of the first elastic piece 20 are respectively formed with first expansion parts 21 that match the bottom end of the card slot 15. The first elastic piece 20 is clamped and fixed to the link 10 through the cooperation between the first expansion parts 21 and the bottom end of the card slot 15; and a deformation accommodation groove 17 is provided at the middle position of the butt joint of two adjacent links 10, so that the middle part of the first elastic piece 20 can deform flexibly in the deformation accommodation groove 17, and the card slot 15 is opened along the inside of the deformation accommodation groove 17. During the relative rotation of the link 10, the middle part of the first elastic piece 20 deforms flexibly in the deformation accommodation groove 17. The deformation accommodation groove 17 provides space for the deformation of the first elastic piece 20, enabling the first elastic piece 20 to elastically deform according to the rotation requirements of the link 10, thereby realizing the relative rotation between adjacent links 10. At the same time, the card slot 15 is opened along the inside of the deformation accommodation groove 17, ensuring the connection stability between the first elastic piece 20 and the link 10 during the deformation process. This connection method can withstand greater tensile force and impact force, ensuring that the drag chain can maintain a stable connection under various working conditions; enabling the first elastic piece 20 to better adapt to different rotation angles and motion states of the link 10, improving the flexibility and adaptability of the drag chain; in addition, the existence of the deformation accommodation groove 17 also helps to disperse the energy generated by the deformation, reduce the transmission of vibration and noise, and at the same time, reduce the damage of other components caused by connection loosening or poor deformation, reducing the maintenance cost and downtime.

[0039] Please refer to Figures 1-5, on the basis of the above technical solution, it is further proposed that a special-shaped groove 18 is formed in the limiting block 13 provided with the second elastic piece 30. A clamping portion 19 larger than its opening is formed inside the special-shaped groove 18. One end of the second elastic piece 30 is formed with a second expanding portion 31 matching the clamping portion 19. The second elastic piece 30 is clamped and fixed on the limiting block 13 through the cooperation of the second expanding portion 31 and the special-shaped groove 18. And the other end of the second elastic piece 30 extends out of the limiting block 13 along the opening of the special-shaped groove 18. The end of the second elastic piece 30 extending out of the limiting block 13 is elastically abutted and cooperated with the limiting protrusion 16; each limiting protrusion 16 elastically abutted by the second elastic piece 30 is provided with two sections; the cooperation between the special-shaped groove 18 and the second expanding portion 31 enables the second elastic piece 30 to be firmly fixed on the limiting block 13. During the movement of the drag chain, the second elastic piece 30 will not easily fall off or shift, ensuring the stability of its buffering and limiting functions. This reliable fixing method improves the overall reliability and durability of the drag chain. The structural cooperation among the chain link 10, the first elastic piece 20 and the second elastic piece 30 is set as follows: when the first elastic piece 20 remains in a non-deformed state, the second elastic piece 30 is elastically abutted against one of the limiting protrusions 16; during the rotation of the chain link 10, the first elastic piece 20 deforms. When the chain link 10 rotates to a specific position, the second elastic piece 30 will elastically abut against another limiting protrusion 16, playing a buffering and limiting role.

[0040] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A link connection structure that achieves silent operation throughout the entire process based on a double elastic sheet structure, characterized in that, it includes a plurality of sequentially docked links (10), a first elastic sheet (20) connected between two adjacent links (10), and a second elastic sheet (30) provided on each link (10) and having a buffering and abutting effect on the adjacent link (10), where: On the upper position of the docking part of two adjacent links (10), upper step structures (11) that are in normal abutting cooperation with each other are provided. On the lower position of the docking part of two adjacent links (10), lower step structures (12) that are in normal abutting cooperation with each other are provided. And between the upper step structures (11) and between the lower step structures (12) of two adjacent links (10), a limiting block (13) and a limiting groove (14) that are in sliding cooperation with each other are provided. The limiting block (13) can slide in the arc direction along the limiting groove (14), and the center of the sliding trajectory is located on the central axis between two adjacent links (10); At the middle position of the docking part of two adjacent links (10), clamping grooves (15) are respectively opened. The two ends of the first elastic sheet (20) are respectively in clamping cooperation with the clamping grooves (15) of two adjacent links (10), so that two adjacent links (10) can rotate along the central axis between two adjacent links (10) through the elastic deformation of the first elastic sheet (20); The second elastic sheet (30) is provided on one of the limiting blocks (13), and a limiting protrusion (16) for abutting against the second elastic sheet (30) is provided on the limiting groove (14) corresponding to the limiting block (13) provided with the second elastic sheet (30). The abutting cooperation between the limiting protrusion (16) and the second elastic sheet (30) is used to limit the sliding stroke of the limiting block (13).

2. A link connection structure that achieves silent operation throughout the entire process based on a double elastic sheet structure according to claim 1, characterized in that, The direction in which the upper step parts of two adjacent links (10) are in normal abutment is opposite to the direction in which the lower step parts of two adjacent links (10) are in normal abutment.

3. A link connection structure that achieves silent operation throughout the entire process based on a double elastic sheet structure according to claim 1, characterized in that, It is expanded and provided at the bottom end of the clamping groove (15). The two ends of the first elastic sheet (20) are respectively formed with first expansion parts (21) that match the bottom end of the clamping groove (15). The first elastic sheet (20) is clamped and fixed to the link (10) through the cooperation between the first expansion parts (21) and the bottom end of the clamping groove (15).

4. A link connection structure that achieves silent operation throughout the entire process based on a double elastic sheet structure according to claim 3, characterized in that, At the middle position of the docking part of two adjacent links (10), a deformation accommodating groove (17) is opened, so that the middle part of the first elastic sheet (20) can deform flexibly in the deformation accommodating groove (17), and the clamping groove (15) is opened along the inside of the deformation accommodating groove (17).

5. A link connection structure that achieves silent operation throughout the entire process based on a double elastic sheet structure according to claim 1, characterized in that, A limiting block (13) provided with a second elastic piece (30) is provided with a special-shaped groove (18). A clamping portion (19) larger than its opening is formed inside the special-shaped groove (18). One end of the second elastic piece (30) is formed with a second expanding portion (31) matching the clamping portion (19). The second elastic piece (30) is clamped and fixed on the limiting block (13) through the cooperation of the second expanding portion (31) and the special-shaped groove (18). And the other end of the second elastic piece (30) extends out of the limiting block (13) along the opening of the special-shaped groove (18). The end of the second elastic piece (30) extending out of the limiting block (13) is elastically abutted and cooperated with a limiting protrusion (16).

6. A link connection structure for realizing silent operation throughout the whole process based on a double-elastic-piece structure according to claim 5, characterized in that, each limiting protrusion (16) elastically abutted by the second elastic piece (30) is provided with two sections.

7. A link connection structure for realizing silent operation throughout the whole process based on a double-elastic-piece structure according to claim 6, characterized in that, the structural cooperation among the link (10), the first elastic piece (20) and the second elastic piece (30) is set as: when the first elastic piece (20) remains in a non-deformed state, the second elastic piece (30) is elastically abutted against one of the limiting protrusions (16).

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