Special high-strength pipeline guide drag chain for purification workshop

Abstract

The utility model relates to a special high-strength pipeline guide drag chain for a clean workshop, which belongs to the technical field of drag chains and comprises an upper shell and a lower shell, the upper shell comprises an upper corrugated part and upper side wing parts fixedly arranged on two sides of the upper corrugated part, and the lower shell comprises a lower corrugated part and lower side wing parts fixedly arranged on two sides of the lower corrugated part. Wave crest parts and wave trough parts are arranged at the upper corrugated part and the lower corrugated part; the triangular backstops are additionally arranged in the wave crest parts in the upper shell, the adjacent triangular backstops abut against each other to form a rigid supporting chain, so that drooping deformation limited by the chain is towed, the lower shell can reserve a basic corrugated profile, upward bending flexibility is provided by compressing the distance between the wave crest parts, and the distance between the adjacent triangular backstops is equal to the distance between the adjacent wave crest parts. The triangular backstops can be in contact at any position to form a continuous supporting beam, so that the drag chain can be overhead in an ultra-long stroke, the sealing effect and the dustproof performance of the drag chain can be improved through the structures such as the sealing occlusion mechanism, and the drag chain is convenient to use and practical.

Description

Technical Field

[0001] This utility model belongs to the field of cable chain technology, specifically relating to a high-strength pipeline-guided cable chain for cleanrooms. Background Technology

[0002] Cable chains, also known as cable drag chains or equipment drag chains, are devices used to protect flexible connecting cables such as cables, air pipes, and oil pipes. They are widely used in various automated equipment, robotic arms, CNC machine tools, and other fields to provide reliable support and guidance for pipelines, preventing damage caused by frequent movement.

[0003] Traditional cable chains include engineering plastic cable chains, pocket-type cleanroom cable chains, and corrugated tube cleanroom cable chains. However, the sealing structure of traditional engineering plastic cable chains is simple and cannot effectively prevent internal dust from escaping. Traditional pocket-type cleanroom cable chains use a flat pocket structure, which has a limited load-bearing area and cannot be used for ultra-long-distance overhead travel. Furthermore, traditional corrugated tube cleanroom cable chains have poor locking force. When traditional corrugated tube cleanroom cable chains need to meet the requirements of small bending radius and anti-sagging in narrow spaces, there is a contradiction between the two (small bending radius requires flexibility, and anti-sagging requires rigidity), making it inconvenient for use in narrow spaces. In response to this, this application proposes a high-strength pipeline guiding cable chain for cleanrooms. Utility Model Content

[0004] The purpose of this invention is to provide a high-strength pipeline guide drag chain specifically for cleanrooms in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A high-strength pipeline guide cable chain for cleanrooms includes an upper shell and a lower shell. The upper shell includes an upper corrugated section and upper side wings fixed on both sides of the upper corrugated section. The lower shell includes a lower corrugated section and lower side wings fixed on both sides of the lower corrugated section. Both the upper and lower corrugated sections have crests and troughs. The upper corrugated section has several triangular stops on its belly at the crest. Adjacent triangular stops bend and abut against each other to form a rigid support chain. Several ribs are evenly spaced inside the upper corrugated section. Several outer stops are provided on the belly of the trough of the upper corrugated section. Several inner stops are fixed between the inner sides of the upper corrugated section and the ribs. A sealing engagement mechanism is provided between the upper and lower side wings.

[0007] As a further optimization of this utility model, the spacing between adjacent triangular stops is equal to the spacing between adjacent crests of the upper corrugated portion.

[0008] As a further optimization of this utility model, the aspect ratio of the upper corrugated portion and the lower corrugated portion is greater than or equal to 1.7, and the thickness of the crest portion is greater than the thickness of the trough portion.

[0009] As a further optimization of this utility model, the crests of the upper corrugated portion and the lower corrugated portion are inclined to both sides, and the lateral width of the crests of the upper corrugated portion and the lower corrugated portion gradually decreases from the middle to both sides.

[0010] As a further optimization of this utility model, a plurality of engagement holes are provided in both the upper wing and the lower wing, and a plurality of engagement teeth are fixedly provided on one side of both the upper wing and the lower wing. The engagement teeth of the upper wing are engaged in the engagement holes of the lower wing, and the engagement teeth of the lower wing are engaged in the engagement holes of the upper wing.

[0011] As a further optimization of this utility model, a plurality of positioning holes are fixedly provided on one side of the lower wing, and a plurality of positioning blocks that are fitted into the positioning holes are fixedly provided on one side of the upper wing.

[0012] As a further optimization of this utility model, the sealing engagement mechanism includes a sealing recess formed on one side of the upper wing and continuously distributed along the length of the upper wing, and a sealing protrusion fixed on one side of the lower wing and continuously distributed along the length of the lower wing, wherein the sealing protrusion is fitted into the sealing recess.

[0013] As a further optimization of this utility model, a number of protruding strips are fixedly provided on one side of both the upper wing and the lower wing.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention adds triangular stops inside the crests of the upper housing, causing adjacent triangular stops to abut against each other to form a rigid support chain, thereby limiting the sagging deformation of the cable chain. The lower housing retains the basic corrugated profile and provides upward bending flexibility by compressing the spacing between the crests. The spacing between adjacent triangular stops is equal to the spacing between adjacent crests, ensuring that the triangular stops can contact each other at any position to form a continuous support beam, enabling the cable chain to perform ultra-long-distance overhead travel. Furthermore, the sealing and interlocking mechanism and other structures improve the sealing effect and dustproof performance of the cable chain, making it convenient and practical.

[0016] Overall, the corrugated design of "directional flexibility + local rigidity" and the fastening method of "central hinge + side constraint" achieve optimization of adaptability to narrow spaces, anti-sagging stability, motion reliability and lifespan at the physical level. These advantages make it particularly suitable for pipeline protection scenarios of precision equipment (such as robotic arms and medical instruments) in cleanrooms, and solve the contradiction of traditional solutions that are difficult to balance rigidity and flexibility in narrow spaces. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a front view schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This is an exploded schematic diagram of the upper and lower shells of this utility model after they have been inverted;

[0020] Figure 4 This is a longitudinal cross-sectional view of the upper and lower shells of this utility model after they have been inverted;

[0021] Figure 5 This is a top view of the lower casing of this utility model;

[0022] Figure 6 This is a top view of the upper shell of this utility model;

[0023] Figure 7 This is a bottom view of the upper shell of this utility model;

[0024] Figure 8 This is a utility model Figure 3 Enlarged view of the A-structure;

[0025] Figure 9 This is a utility model Figure 5 Enlarged view of the B-structure;

[0026] Figure 10 This is a utility model Figure 6 Enlarged view of the C-structure;

[0027] Figure 11 This is a utility model Figure 7 Enlarged view of the D-structure.

[0028] In the diagram: 1. Upper shell; 11. Upper corrugated section; 12. Upper side wing; 13. Triangular stop; 14. Rib; 15. Outer stop; 16. Inner stop; 2. Lower shell; 21. Lower corrugated section; 22. Lower side wing; 3. Corrugated crest; 31. Corrugated trough; 4. Engaging hole; 41. Engaging tooth; 42. Positioning hole; 43. Positioning insert; 44. Sealing recess; 45. Sealing protrusion; 5. Raised strip. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0030] Example

[0031] like Figure 1-11 As shown, a high-strength pipeline guide cable chain for cleanrooms includes an upper shell 1 and a lower shell 2. The gap between the upper shell 1 and the lower shell 2 forms a threading cavity for the high-strength pipeline to pass through.

[0032] like Figure 1-4 As shown, the upper shell 1 includes an upper corrugated portion 11 and upper side wings 12 fixed on both sides of the upper corrugated portion 11. The lower shell 2 includes a lower corrugated portion 21 and lower side wings 22 fixed on both sides of the lower corrugated portion 21. Both the upper corrugated portion 11 and the lower corrugated portion 21 are provided with crests 3 and troughs 31. The unique wave-shaped limiting design of the upper corrugated portion 11 and the lower corrugated portion 21 increases the load-bearing area and improves its long-term overhead capacity.

[0033] like Figure 1 , Figure 3 , Figure 6 and Figure 7 As shown, the upper corrugated part 11 has several triangular stops 13 on one side of the crest part 3. When adjacent triangular stops 13 bend and abut, they form a rigid support chain. The rigid support chain formed by the abutment of adjacent triangular stops 13 can limit the sagging deformation of the drag chain.

[0034] like Figure 1 , Figure 3 , Figure 6 and Figure 7 As shown, the spacing between adjacent triangular stops 13 is equal to the spacing between adjacent crests 3 of the upper corrugated portion 11, ensuring that the triangular stops 13 can contact each other at any position, forming a continuous support beam (similar to the effect of a multi-span simply supported beam), enabling the cable chain to perform ultra-long-distance overhead travel.

[0035] like Figure 1 , Figure 3 , Figure 6 and Figure 7 As shown, several ribs 14 are evenly spaced inside the upper corrugated part 11. The ribs 14 are in an approximately three-sided column shape to enhance the lateral stability of the cable chain and resist the bending moment caused by gravity.

[0036] like Figure 6 , Figure 7 , Figure 10 and Figure 11 As shown, the upper corrugated portion 11 has several outer stops 15 on its trough 31, and several inner stops 16 are fixed between the upper corrugated portion 11 and the inner side of the rib 14. The outer stops 15 can partially connect the upper corrugated portion 11, and the inner stops 16 can connect the upper corrugated portion 11 and the rib 14. This allows the inner stops 16 and outer stops 15 to locally reinforce the upper corrugated portion 11 when the cable chain bends, thereby limiting the sagging deformation of the cable chain.

[0037] like Figure 1-4 As shown, the width-to-height ratio of the upper corrugated part 11 and the lower corrugated part 21 is greater than or equal to 1.7, and the width-to-height ratio of the upper corrugated part 11 and the lower corrugated part 21 can be 2.5, so as to realize the flattening of the cable chain, thereby adapting to narrow spaces (such as equipment mezzanine) and maintaining the bending resistance of the cable chain, avoiding the loss of bending stiffness caused by the reduction in height due to the stop structure compensation.

[0038] like Figure 1-4 As shown, the crests 3 of the upper corrugated portion 11 and the lower corrugated portion 21 are inclined to both sides, and the lateral width of the crests 3 of the upper corrugated portion 11 and the lower corrugated portion 21 gradually decreases from the middle to both sides. This allows the inclined sides to disperse the bending stress from the middle section (high stress area) of the crests 3 to the sides, reducing stress concentration and optimizing stress distribution. Furthermore, the spacing between the sides of the crests 3 increases as the width decreases (≤7mm), allowing more pipelines to be accommodated within a limited width, thereby increasing the internal space of the cable chain.

[0039] like Figure 1-4 As shown, the thickness of the crest portion 3 is greater than the thickness of the trough portion 31, with the crest thickness (0.5–2 mm) > the trough thickness (0.5–1.0 mm). The crest portion 3 bears the main compressive / tensile stress, and its thickening enhances its resistance to buckling. The trough portion 31 is highly flexible to achieve expansion and contraction deformation, while its thinning reduces its bending stiffness.

[0040] The lower shell 2 retains the basic corrugated profile and provides upward bending flexibility by compressing the spacing of the crests 3. The triangular stops 13 and other components in the upper shell 1 provide static support (resisting the gravitational bending moment formula is $M=\frac{wL^2}{8}$). The lower shell is flexible, thus allowing dynamic bending (small radius of curvature $R_{\text{min}}$), meeting the travel requirements of moving pipelines. It also has a flat cross-section, providing more pipeline accommodation space than a circular corrugated pipe of the same width. The corrugated gradient design of the crests 3 can avoid stress abrupt changes, delay crack initiation, and improve fatigue life.

[0041] like Figure 1-4 As shown, a sealing engagement mechanism is provided between the upper wing 12 and the lower wing 22. The upper shell 1 and the lower shell 2 are interlocked. The upper wing 12 and the lower wing 22 extend and mesh to form a central axis surface (thickness ≤3mm). The interlocking of the central axis ensures that the neutral layer (zero strain surface) coincides with the physical central axis when bending, reducing additional torque. The meshing of the wing suppresses the lateral misalignment of the upper shell 1 and the lower shell 2, preventing corrugated slip wear. The thin central axis surface (≤3mm) reduces the hinge rotational inertia and ensures smooth bending.

[0042] like Figure 3 , Figure 5 , Figure 8 and Figure 9As shown, both the upper wing 12 and the lower wing 22 have several engagement holes 4, and both the upper wing 12 and the lower wing 22 have several engagement teeth 41 fixed on one side. The engagement teeth 41 of the upper wing 12 engage with the engagement holes 4 of the lower wing 22, and the engagement teeth 41 of the lower wing 22 engage with the engagement holes 4 of the upper wing 12. Through the engagement of the engagement teeth 41 and the engagement holes 4, the upper wing 12 and the lower wing 22 can be connected.

[0043] like Figure 3 , Figure 5 , Figure 8 and Figure 9 As shown, a number of positioning holes 42 are fixedly provided on one side of the lower wing 22, and a number of positioning blocks 43 are fixedly provided on one side of the upper wing 12, which are fitted into the positioning holes 42. By inserting the positioning blocks 43 into the positioning holes 42, the upper wing 12 and the lower wing 22 can be further connected and positioned, which makes it convenient to quickly align the biting teeth 41 and the biting holes 4.

[0044] like Figure 3 , Figure 5 , Figure 8 and Figure 9 As shown, the sealing engagement mechanism includes sealing recesses 44 continuously distributed along the length of the upper wing 12 on one side, and sealing protrusions 45 continuously distributed along the length of the lower wing 22 on one side. The sealing protrusions 45 are inserted into the sealing recesses 44. After the sealing protrusions 45 are inserted into the sealing recesses 44, the upper wing 12 and the lower wing 22 will interlock with each other, thereby sealing the upper housing 1 and the lower housing 2. This effectively prevents dust, debris and other pollutants from leaking out of the cable chain, keeping the working environment clean. It is especially suitable for dust-sensitive environments, such as the electronics, food and pharmaceutical industries. In conjunction with the engagement teeth 41 and positioning blocks 43, it can provide multiple fixation between the upper housing 1 and the lower housing 2, improve the stability after installation, and resist the lateral misalignment of the cable chain.

[0045] like Figure 3 , Figure 5 , Figure 8 and Figure 9 As shown, several protrusions 5 are fixedly provided on one side of the upper wing 12 and the lower wing 22, and the upper wing 12 and the lower wing 22 can be connected to the connector end block of the external cable chain through the protrusions 5.

[0046] It should be noted that, in use, this high-strength pipeline guide cable chain for cleanrooms is first placed on top of the lower housing 2, allowing the positioning insert 43 to be inserted into the positioning hole 42. Then, the upper housing 1 is pressed down and fastened onto the lower housing 2. At this time, the biting teeth 41 and the biting hole 4 will quickly engage, connecting the upper wing 12 and the lower wing 22. After the sealing protrusion 45 is inserted into the sealing recess 44, the upper wing 12 and the lower wing 22 will engage with each other, thereby sealing the upper housing 1 and the lower housing 2. This effectively prevents dust, debris, and other pollutants from leaking out of the cable chain, maintaining a clean working environment.

[0047] By adding triangular stops 13 inside the crest portion 3 of the upper housing 1, adjacent triangular stops 13 abut against each other to form a rigid support chain, thereby limiting the sagging deformation of the cable chain. The lower housing 2 can retain the basic corrugated profile and provide upward bending flexibility by compressing the spacing of the crest portions 3. The spacing of adjacent triangular stops 13 is equal to the spacing of adjacent crest portions 3, ensuring that the triangular stops 13 can contact each other at any position to form a continuous support beam, enabling the cable chain to perform ultra-long-stroke overhead travel and to be used in narrow spaces. Furthermore, the sealing and interlocking mechanism and other structures can improve the sealing effect and dustproof performance of the cable chain.

[0048] Overall, the corrugated design of "directional flexibility + local rigidity" and the fastening method of "central hinge + side constraint" achieve, at the physical level, the adaptability to narrow spaces (low aspect ratio + small bending radius), anti-sagging stability (13-bracing triangular stops on the side abdomen), motion reliability (low resistance bending + anti-lateral misalignment), and lifespan optimization (uniform stress distribution). These advantages make it particularly suitable for pipeline protection scenarios of precision equipment (such as robotic arms and medical instruments) in cleanrooms, solving the contradiction of traditional solutions that are difficult to balance rigidity and flexibility in narrow spaces.

[0049] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A high-strength pipeline guide cable chain for cleanrooms, comprising an upper shell (1) and a lower shell (2), wherein the upper shell (1) comprises an upper corrugated portion (11) and upper side wings (12) fixedly disposed on both sides of the upper corrugated portion (11), and the lower shell (2) comprises a lower corrugated portion (21) and lower side wings (22) fixedly disposed on both sides of the lower corrugated portion (21), wherein the upper corrugated portion (11) and the lower corrugated portion (21) are each provided with a crest portion (3) and a trough portion (31), characterized in that: The upper corrugated part (11) has several triangular stops (13) on its belly at the crest (3). Adjacent triangular stops (13) bend and abut against each other to form a rigid support chain. Several ribs (14) are evenly spaced inside the upper corrugated part (11). Several outer stops (15) are provided on the belly at the trough (31) of the upper corrugated part (11). Several inner stops (16) are fixed between the inner sides of the upper corrugated part (11) and the ribs (14). A sealing engagement mechanism is provided between the upper wing (12) and the lower wing (22).

2. A high strength pipe guide drag chain for use in a clean room according to claim 1, characterized in that: The spacing between adjacent triangular stops (13) is equal to the spacing between adjacent crests (3) of the upper corrugated portion (11).

3. A high strength pipe guide drag chain for clean room applications according to claim 1, characterized in that: The aspect ratio of the upper corrugated portion (11) and the lower corrugated portion (21) is greater than or equal to 1.7, and the thickness of the crest portion (3) is greater than the thickness of the trough portion (31).

4. A high strength, clean room dedicated pipe guide drag chain as defined in claim 1, wherein: The crests (3) of the upper corrugated portion (11) and the lower corrugated portion (21) are inclined to both sides, and the lateral width of the crests (3) of the upper corrugated portion (11) and the lower corrugated portion (21) gradually decreases from the middle to both sides.

5. A high strength, clean room dedicated pipe guide drag chain as defined in claim 1, wherein: Both the upper wing (12) and the lower wing (22) are provided with a plurality of engagement holes (4), and both the upper wing (12) and the lower wing (22) are provided with a plurality of engagement teeth (41) on one side. The engagement teeth (41) of the upper wing (12) are engaged in the engagement holes (4) of the lower wing (22), and the engagement teeth (41) of the lower wing (22) are engaged in the engagement holes (4) of the upper wing (12).

6. A high strength, clean room dedicated pipe guide drag chain as defined in claim 5, wherein: The lower wing (22) is provided with a number of positioning holes (42) on one side, and the upper wing (12) is provided with a number of positioning blocks (43) that are fitted into the positioning holes (42) on one side.

7. A high-strength pipeline guide cable chain for cleanrooms according to claim 6, characterized in that: The sealing engagement mechanism includes a sealing recess (44) opened on one side of the upper wing (12) and continuously distributed along the length of the upper wing (12), and a sealing protrusion (45) fixed on one side of the lower wing (22) and continuously distributed along the length of the lower wing (22). The sealing protrusion (45) is fitted into the sealing recess (44).

8. A high strength, clean room dedicated pipe guide drag chain as defined in claim 1, wherein: Several protrusions (5) are fixedly provided on one side of both the upper wing (12) and the lower wing (22).

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