A new type of silent drag chain

Abstract

The present invention relates to a novel silent drag chain, comprising a plurality of chain link bodies and connectors, wherein two chain link bodies are connected head to tail in sequence to form a drag chain group, wherein each chain link body comprises a left chain link, a right chain link and a supporting connecting plate, wherein both ends of the supporting connecting plate are installed between the left chain link and the right chain link to form an inner accommodating cavity, wherein the right chain link comprises a chain link panel and a buffer rod, and the chain link panel is divided into an upper panel and a lower panel forming a height difference, and a buffer rod is connected to the outer end surface of the lower panel, and the buffer rod has an arc-shaped end, and an annular groove notch adapted to the end of the buffer rod is provided on the inner side of the upper panel; the present invention is structurally designed with a noise reduction function, and is suitable for use in reciprocating motion occasions, and can pull and protect built-in cables, oil pipes, air pipes, water pipes, etc.; each section of the drag chain can be opened for easy installation and maintenance, and has low noise, wear resistance, and can move at high speed during movement.

Description

Technical Field

[0001] The present invention relates to the technical field of drag chains, in particular to a novel silent drag chain. Background Art

[0002] A drag chain, also known as a cable carrier, is a device that restrains cables or wires or pneumatic and hydraulic pipes to facilitate their rotation and movement.

[0003] Due to the continuous operation characteristics of the drag chain, the drag chain is used for the laying of cables, oil and gas pipelines. The current drag chain is mainly assembled by chain links of different sizes of inner width, inner height and pitch. It protects cables, oil pipes, gas pipes, etc. that need to be moved back and forth. In order to prevent them from entanglement, wear, pulling off, hooking and scattering, they are placed in the drag chain to protect them and enable them to move back and forth, which facilitates the laying of pipelines, especially in some places that are inconvenient for staff to enter. When in use, the pipeline is placed inside the drag chain, and as the drag chain moves, the pipeline will be transported to the designated working position.

[0004] However, the current drag chain has the disadvantage of producing relatively loud noise during operation. In some specific situations, the noise may bring about adverse consequences and produce unnecessary influences. In view of the above problem, the present invention makes improvements. Summary of the Invention

[0005] The present invention provides a novel silent drag chain, which solves the problem of excessive noise during use in the prior art.

[0006] The technical solution of the present invention is achieved as follows:

[0007] A new type of silent drag chain, including several chain link bodies and connectors, two chain link bodies are connected head to tail in sequence to form a drag chain group, the connector is divided into an inner connector and an outer connector, the inner connector and the outer connector are respectively arranged at the head and tail of the drag chain group, each chain link body includes a left chain link, a right chain link and a support connecting plate, the two ends of the support connecting plate are installed between the left chain link and the right chain link to form an inner accommodating cavity, the right chain link includes a chain link panel and a buffer rod, the chain link panel is divided into an upper panel and a lower panel forming a height difference, the height difference end faces of the upper panel and the lower panel are formed with a first upper contact end face and a first lower contact end face, an axial hole is opened between the first upper contact end face and the first lower contact end face, wherein the upper panel forms an annular concave The outer end surface of the lower panel is connected to a buffer rod, the buffer rod has an arc-shaped end, the upper panel has a docking surface, the docking surface forms a second upper contact end surface and a second lower contact end surface, the second upper contact end surface and the second lower contact end surface form an angle, the two are not on the same vertical axis, and there is an inner recess between the second upper contact end surface and the second lower contact end surface, which is docked with the annular inner recess to form a circular hole, and a shaft rod is installed in the inner recess, and the shaft rod extends into the shaft hole to cooperate, in the initial state, the first upper contact end surface contacts the second upper contact end surface, and the first lower contact end surface contacts the second lower contact end surface to form a movable forming space, and the inner side of the upper panel is provided with an annular groove notch adapted to the end of the buffer rod;

[0008] During installation, the buffer rod of the right link is placed in the annular groove notch of the previous right link, and the shaft rod of the right link is located in the shaft hole of the previous right link. The same connection is repeated to assemble the drag chain assembly.

[0009] Preferably, the lower panel of the link panel is processed into an inwardly concave arc-shaped outer end surface, and the above-mentioned buffer rod is arranged on the arc-shaped outer end surface, wherein there is at least one limiting protrusion on the lower panel, and the limiting protrusion is arranged on the adjacent surface of the arc-shaped outer end surface, and the upper panel has a conflicting inner surface that can conflict with the limiting protrusion.

[0010] Preferably, there are two limiting protrusions, which are symmetrically arranged on the adjacent surfaces of the arc-shaped outer end surface with the shaft hole as the center. The interference inner surface is divided into an upper interference inner surface and a lower interference inner surface. The upper interference inner surface is located on the back of the second upper contact end surface, and the lower interference inner surface is located on the back of the second lower contact end surface.

[0011] Preferably, the end surface of the limiting protrusion is formed with two outwardly protruding circular convex surfaces.

[0012] Preferably, the left link has the same structure as the right link.

[0013] Preferably, the center line of the buffer rod, the center of the shaft hole and the center of the annular groove notch are all on the same axis.

[0014] Preferably, the supporting connecting plate includes a supporting middle plate, a left connecting plate and a right connecting plate, the supporting middle plate is connected between the left connecting plate and the right connecting plate, and the other ends of the left connecting plate and the right connecting plate are respectively connected to the left chain link and the right chain link.

[0015] Preferably, the supporting middle plate has two card slots and a through opening, each card slot includes a first card slot, a second card slot and an accommodating opening, the through opening is located above the supporting middle plate and communicates with the accommodating opening, the left connecting plate and the right connecting plate both have two card edges and a protrusion arranged on the edge, the first card slot and the second card slot respectively correspond to the card edges and snap fit, and the protrusion extends into the through opening for engagement.

[0016] Preferably, a limit block is provided on the left connecting plate, and the limit block is located at the end of the left connecting plate.

[0017] Preferably, the supporting middle plate is made of plastic material.

[0018] This solution has the following features:

[0019] 1. A buffer rod feature is designed between the chain link assemblies to prevent collisions during normal use;

[0020] 2. The characteristic contact surfaces where the chain links collide with each other during normal movement are designed with arcs to reduce the collision area;

[0021] In summary, the present invention has a noise reduction function designed from a structural perspective, so that the product cannot generate obvious noise during normal operation. It is a silent product and meets the silent requirements of equipment that have noise requirements for this type of product. It is suitable for use in reciprocating motion occasions and can pull and protect built-in cables, oil pipes, air pipes, water pipes, etc. Each section of the drag chain can be opened for easy installation and maintenance. It has low noise during movement, is wear-resistant, and can move at high speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of the overall structure of the silent drag chain of the present invention;

[0024] Figure 2 for Figure 1 Schematic diagram of the structure from a top-down perspective;

[0025] Figure 3It is a structural diagram of a chain link body;

[0026] Figure 4 It is a structural diagram of the inner side of the chain link panel;

[0027] Figure 5 It is the structural diagram of the left chain link;

[0028] Figure 6 It is a structural diagram of the external connector;

[0029] Figure 7 Schematic diagram of the structure of the inner connector;

[0030] Figure 8 Schematic diagram of the structure of the two chain link bodies.

[0031] Figure 9 Schematic diagram of the matching structure of the support connecting plate;

[0032] Figure 10 for Figure 9 Schematic diagram of the structure during installation. DETAILED DESCRIPTION

[0033] The following is a combination of the embodiments of the present invention Figure 1-10 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. Example

[0034] like Figures 1 to 10As shown, the present invention discloses a new type of silent drag chain 1, including several chain link bodies 4 and connectors, two of the chain link bodies 4 are connected head to tail in sequence to form a drag chain group, the connector is divided into an inner connector 3 and an outer connector 2, the inner connector 3 and the outer connector 2 are respectively arranged at the head and tail of the drag chain group, each chain link body includes a left chain link 5, a right chain link 6 and a support connecting plate 7, both ends of the support connecting plate 7 are installed between the left chain link and the right chain link to form an inner accommodating cavity, the inner accommodating cavity can be used for placing cables, oil pipes, air pipes, water pipes, etc., the left chain link 5 includes a chain link panel and a buffer rod 9, the chain link panel 9 is divided into an upper panel 50 and a lower panel 51 forming a height difference, the height difference end faces of the upper panel 50 and the lower panel 51 are formed with a first upper contact end face 500 and a first lower contact end face 505, an axial hole 8 is opened between the first upper contact end face and the first lower contact end face, wherein the upper panel 50 forms a ring The inner recess 504, the outer end surface 510 of the lower panel is connected with a buffer rod 9, the buffer rod 9 has an arc-shaped end head 91, specifically a circular end head, the upper panel 50 has a docking surface, the docking surface forms a second upper contact end face 501 and a second lower contact end face 503, the second upper contact end face and the second lower contact end face form an angle, the two are not on the same vertical axis, the second upper contact end face and the second lower contact end face have an inner recess between the second upper contact end face and the second lower contact end face to form a circular hole docked with the annular inner recess, and an axle rod 502 is installed in the inner recess, the axle rod 502 extends into the axle hole 8 for cooperation, the axle rod 502 extends into the axle hole 8 for cooperation refers to the axle hole on the right link panel of the next link body, in the initial state, the first upper contact end face 500 contacts the second upper contact end face 501, and the first lower contact end face 505 contacts the second lower contact end face 503 to form a movable forming space C, reference Figure 8 , the inner side of the upper panel 50 is provided with an annular groove notch 10 adapted to the end of the buffer rod;

[0035] During installation, the buffer rod 9 of the right link is placed in the annular groove notch 10 of the previous right link, and the shaft rod 502 of the right link is located in the shaft hole 8 of the previous right link. The same connection is repeated to assemble the drag chain assembly.

[0036] In this solution, the buffer rod 9 is designed with features between the chain link assemblies, so that the collision during normal use cannot be completed smoothly. Specifically, when the buffer rod 9 is in the annular groove notch 10 and rotates during movement, it has a certain resistance effect. However, due to the use of a circular end, it can be rotated, so that when one of the chain link bodies is working, it will drive the buffer rod 9 to rotate relative to the annular groove notch 10, so that each chain link body cannot directly and smoothly complete the collision, thereby reducing noise.

[0037] The lower panel 51 of the link panel is processed into an inwardly concave arc-shaped outer end surface, that is, the lower panel outer end surface 510, and the above-mentioned buffer rod 9 is arranged on the arc-shaped outer end surface, wherein there is at least one limiting protrusion 511 on the lower panel, and the limiting protrusion 511 is arranged on the adjacent surface of the arc-shaped outer end surface, and the upper panel has a conflicting inner surface that can conflict with the limiting protrusion.

[0038] Two limiting protrusions 511 are provided, symmetrically arranged on adjacent surfaces of the arc-shaped outer end surface with the shaft hole as the center. The inner contact surface is divided into an upper inner contact surface 506 and a lower inner contact surface 507. The upper inner contact surface is located on the back of the second upper contact end surface, and the lower inner contact surface is located on the back of the second lower contact end surface. Two outwardly protruding circular convex surfaces 512 are formed on the end surface of the limiting protrusion.

[0039] In order to make the product more reliable, preferably, the center line of the buffer rod, the center of the shaft hole and the center of the annular groove notch are all on the same axis.

[0040] This solution designs a limiting protrusion 511 on the lower panel. In the initial state, the upper conflicting inner surface 506 is not in contact with the upper limiting protrusion 511, but the lower limiting protrusion 511 is in contact with the lower conflicting inner surface 507. During operation, the first upper contact end surface 500 will move away from the second upper contact end surface 501. At this time, the upper conflicting inner surface 506 will approach the upper limiting protrusion 511. On the contrary, the first lower contact end surface 505 will move close to the first lower contact end surface 503. At this time, the lower conflicting inner surface 506 will move away from the lower limiting protrusion 511. At the same time, the end surface of the limiting protrusion is designed to be a protruding circular convex surface 512, so that the chain links can collide with each other during normal movement to reduce their collision area, thereby further achieving a silent effect.

[0041] The supporting connecting plate 7 includes a supporting middle plate, a left connecting plate 71, and a right connecting plate 72. The supporting middle plate is connected between the left connecting plate and the right connecting plate. The other ends of the left connecting plate and the right connecting plate are connected to the left link and the right link respectively. The left connecting plate and the right connecting plate have the same structure.

[0042] The movable connection mode between the left chain link and the left connecting plate is:

[0043] The supporting middle plate 7 has two card slots and a through opening 76. Each card slot includes a first card slot 75, a second card slot 73 and an accommodating opening 74. The through opening 76 is located above the supporting middle plate and communicates with the accommodating opening 74. The left connecting plate and the right connecting plate both have two card edges 710, 711 and a protrusion 712 provided on the edge. The first card slot and the second card slot respectively correspond to the card edges and snap fit together. The protrusion 712 extends into the through opening 76 for engagement. When in use, first face the first card slot 75 to the card edge 711, that is, direction A, and then flip the second card slot 73 to the other card edge 710 to be carded in, that is, direction B. It should be noted that there are two card slots, and the corresponding left connecting plate and right connecting plate can be docked. The connection method of the supporting middle plate with the left connecting plate and the right connection is mainly to achieve better support for the middle plate, and the distance between the left chain link and the right chain link can be adjusted according to needs. It should be pointed out that the supporting middle plate of this solution is preferably made of plastic, which is tough and elastic, and the assembly is more convenient and reliable.

[0044] The use of an adjustment structure can achieve appropriate adjustment for work products of different sizes, has wider applicability, and solves the current fixed size limitations.

[0045] Preferably, a limit block 711 is provided on the left connecting plate, and the limit block is located at the end of the left connecting plate. The limit block 711 prevents the left link from detaching during the adjustment process, thereby providing rationality.

[0046] It should be noted that the left link of this solution has the same structure as the right link. Please refer to the structure of the right link above, so it will not be explained here.

[0047] To further explain the solution: This solution resembles a tank chain, consisting of numerous unit links, each of which rotates freely. Chains within the same series have the same internal and external heights, as well as pitch, but can vary in internal height and bend radius. Each unit link consists of left and right chain plates and upper and lower covers. Each link can be opened, making assembly and disassembly easy, eliminating the need for threading. Once the covers are opened, cables, oil pipes, and air pipes can be placed inside the chain.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new type of silent drag chain, comprising a plurality of chain link bodies and connectors, wherein two chain link bodies are connected head to tail in sequence to form a drag chain group, and the connectors are divided into inner connectors and outer connectors, which are respectively arranged at the head and tail of the drag chain group, and are characterized by: Each link body includes a left link, a right link and a supporting connecting plate, and both ends of the supporting connecting plate are installed between the left link and the right link to form an inner accommodating cavity, the right link includes a link panel and a buffer rod, the link panel is divided into an upper panel and a lower panel forming a height difference, the height difference end surfaces of the upper panel and the lower panel are formed with a first upper contact end surface and a first lower contact end surface, an axial hole is opened between the first upper contact end surface and the first lower contact end surface, wherein the upper panel is formed with an annular inner recess, and the outer end surface of the lower panel is connected with a buffer rod, the buffer rod has an arc-shaped end head, and the upper panel has a docking surface. The docking surface is formed with a second upper contact end surface and a second lower contact end surface, the second upper contact end surface and the second lower contact end surface form an angle, the two are not on the same vertical axis, the second upper contact end surface and the second lower contact end surface are provided with an inner recess that docks with the annular inner recess to form a circular hole, a shaft rod is installed in the inner recess, the shaft rod extends into the shaft hole to fit, in an initial state, the first upper contact end surface contacts the second upper contact end surface, the first lower contact end surface contacts the second lower contact end surface to form a movable forming space, and the inner side of the upper panel is provided with an annular groove notch that matches the end of the buffer rod; During installation, the buffer rod of the right link is placed in the annular groove notch of the previous right link, and the shaft rod of the right link is located in the shaft hole of the previous right link, and so on to connect and assemble into the drag chain assembly; The lower panel of the link panel is processed into a concave arc-shaped outer end surface, and the above-mentioned buffer rod is arranged on the arc-shaped outer end surface, wherein the lower panel has at least one limiting protrusion, and the limiting protrusion is arranged on the adjacent surface of the arc-shaped outer end surface, and the upper panel has an interfering inner surface capable of interfering with the limiting protrusion; There are two limiting protrusions, which are symmetrically arranged on adjacent surfaces of the arc-shaped outer end surface with the shaft hole as the center. The inner contact surface is divided into an upper inner contact surface and a lower inner contact surface. The upper inner contact surface is located on the back of the second upper contact end surface, and the lower inner contact surface is located on the back of the second lower contact end surface. The end surface of the limiting protrusion is formed with two outwardly protruding circular convex surfaces; The left chain link has the same structure as the right chain link; The center line of the buffer rod, the center of the shaft hole and the center of the ring groove notch are all on the same axis; The supporting connecting plate includes a supporting middle plate, a left connecting plate and a right connecting plate, wherein the supporting middle plate is connected between the left connecting plate and the right connecting plate, and the other ends of the left connecting plate and the right connecting plate are connected to the left chain link and the right chain link respectively; The supporting middle plate has two card slots and a through opening, each card slot includes a first card slot, a second card slot and an accommodating opening, the through opening is located above the supporting middle plate and communicates with the accommodating opening, the left connecting plate and the right connecting plate both have two card edges and a protrusion arranged on the edge, the first card slot and the second card slot respectively correspond to the card edges and snap fit, and the protrusion extends into the through opening for engagement.

2. A new type of silent drag chain according to claim 1, characterized in that: A limit block is provided on the left connecting plate, and the limit block is located at the end of the left connecting plate.

3. A novel silent drag chain according to claim 1, characterized in that: The supporting middle plate is made of plastic material.

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