Special high-strength pipeline guide drag chain for purification workshop

Abstract

The invention relates to a high-strength pipeline guiding drag chain special for a clean workshop, and belongs to the technical field of drag chains, the high-strength pipeline guiding drag chain comprises an upper shell and a lower shell, the upper shell comprises an upper corrugated part and upper side wing parts fixedly arranged on the two sides of the upper corrugated part, and the lower shell comprises a lower corrugated part and lower side wing parts fixedly arranged on the 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] The invention belongs to the technical field of drag chains, and in particular relates to a high-strength pipeline guiding drag chain specially used in cleanrooms. Background Art

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

[0003] Traditional drag chains include engineering plastic drag chains, pocket-type dust-free drag chains and bellows dust-free drag chains. However, the sealing structure design of traditional engineering plastic drag chains is simple and cannot effectively prevent internal dust from escaping. Traditional pocket-type dust-free drag chains and flat pocket structures have limited load-bearing area and cannot be suspended for ultra-long strokes. In addition, the locking force of traditional bellows dust-free drag chains is poor. When traditional bellows dust-free drag 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), which makes bellows dust-free drag chains inconvenient to use in narrow spaces. In this regard, the present application proposes a high-strength pipeline guide drag chain specially designed for clean workshops. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-strength pipeline guide drag chain specially used in cleanrooms in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A high-strength pipeline guide drag chain specially designed for clean workshops includes an upper shell and a lower shell, the upper shell includes an upper corrugated portion and upper side wings fixedly arranged on both sides of the upper corrugated portion, the lower shell includes a lower corrugated portion and lower side wings fixedly arranged on both sides of the lower corrugated portion, the upper and lower corrugated portions are both provided with crests and troughs, the belly of the crest of the upper corrugated portion is provided with a plurality of triangular stops, and the adjacent triangular stops are bent and collided to form a rigid support chain, a plurality of ribs are arranged at equal intervals in the upper corrugated portion, a plurality of outer stops are provided on the belly of the trough of the upper corrugated portion, a plurality of inner stops are fixedly provided between the upper corrugated portion and the inner sides of the ribs, and a sealing bite mechanism is provided between the upper side wings and the lower side wings.

[0007] As a further optimization solution of the present invention, the spacing between adjacent triangular stops is equal to the spacing between adjacent peak portions of the upper corrugated portion.

[0008] As a further optimization solution of the present invention, the aspect ratios of the upper corrugated portion and the lower corrugated portion are both 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 solution of the present invention, the peaks of the upper corrugated portion and the lower corrugated portion are inclined to both sides, and the transverse widths of the peaks of the upper corrugated portion and the lower corrugated portion gradually decrease from the middle to both sides.

[0010] As a further optimization scheme of the present invention, a plurality of engaging holes are opened in the upper side wing and the lower side wing, and a plurality of engaging teeth are fixed on one side of the upper side wing and the lower side wing. The engaging teeth of the upper side wing fit in the engaging holes of the lower side wing, and the engaging teeth of the lower side wing fit in the engaging holes of the upper side wing.

[0011] As a further optimization solution of the present invention, a plurality of positioning holes are fixedly provided on one side of the lower wing portion, and a plurality of positioning plugs that are fitted and inserted into the positioning holes are fixedly provided on one side of the upper wing portion.

[0012] As a further optimization scheme of the present invention, the sealing engagement mechanism includes a sealing recessed hole opened on one side of the upper wing and continuously distributed along the length direction of the upper wing, and a sealing protrusion fixed on one side of the lower wing and continuously distributed along the length direction of the lower wing, and the sealing protrusion is fitted and inserted in the sealing recessed hole.

[0013] As a further optimization solution of the present invention, a plurality of convex strips are fixedly provided on one side of the upper wing portion and the lower wing portion.

[0014] The beneficial effects of the present invention are:

[0015] The present invention adds triangular stops in the crest part of the upper shell so that adjacent triangular stops collide to form a rigid support chain, thereby limiting the drooping deformation of the drag chain. The lower shell can retain the basic corrugated profile and provide upward bending flexibility by compressing the spacing of the crest parts. The spacing between adjacent triangular stops is equal to the spacing between adjacent crest parts, ensuring that the triangular stops can contact at any position to form a continuous support beam, so that the drag chain can be suspended for an ultra-long stroke, and structures such as the sealing bite mechanism can improve the sealing effect and dustproofness of the drag chain, which is convenient and practical.

[0016] The overall corrugated design of "directional flexibility + local rigidity" and the fastening method of "central hinge + side wing constraint" achieve optimization of narrow space adaptability, anti-droop stability, motion reliability and life 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 clean workshops, solving the contradiction between traditional solutions that are difficult to strike a balance between rigidity and flexibility in narrow spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic front view of the overall structure of the present invention;

[0019] Figure 3 This is a schematic diagram of an explosion after the upper shell and the lower shell of the present invention are inverted;

[0020] Figure 4 1 is a longitudinal cross-sectional view of the upper and lower shells of the present invention after being inverted;

[0021] Figure 5 is a schematic top view of the lower housing of the present invention;

[0022] Figure 6 is a schematic top view of the upper housing of the present invention;

[0023] Figure 7 1 is a bottom view schematic diagram of the upper shell of the present invention;

[0024] Figure 8 This invention Figure 3 A magnified view of the structure in the middle;

[0025] Figure 9 This invention Figure 5 Middle B is an enlarged view of the structure;

[0026] Figure 10 This invention Figure 6 Middle C structure magnification;

[0027] Figure 11 This invention Figure 7 A magnified view of the structure in middle D.

[0028] In the figure: 1. upper shell; 11. upper corrugated portion; 12. upper side wing; 13. triangular stop; 14. rib; 15. outer stop; 16. inner stop; 2. lower shell; 21. lower corrugated portion; 22. lower side wing; 3. crest portion; 31. trough portion; 4. engaging hole; 41. engaging tooth; 42. positioning hole; 43. positioning plug; 44. sealing recessed hole; 45. sealing protrusion; 5. convex strip. DETAILED DESCRIPTION

[0029] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0030] Example

[0031] like Figure 1-11As shown, a high-strength pipeline guide drag chain specially used in clean workshops 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, and 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. The upper corrugated portion 11 and the lower corrugated portion 21 are both provided with a crest portion 3 and a trough portion 31. The unique wave-shaped limiting design of the upper corrugated portion 11 and the lower corrugated portion 21 increases the bearing area and improves its long overhead capacity.

[0033] like Figure 1 、 Figure 3 、 Figure 6 and Figure 7 As shown, a plurality of triangular stops 13 are provided on one side of the abdomen of the peak portion 3 of the upper corrugated portion 11. Adjacent triangular stops 13 bend and collide to form a rigid support chain. The rigid support chain formed by the collision 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 peaks 3 of the upper corrugated portion 11, ensuring that the triangular stops 13 can be in contact at any position, forming a continuous support beam (similar to the multi-span simply supported beam effect), so that the drag chain can be suspended for an ultra-long stroke.

[0035] like Figure 1 、 Figure 3 、 Figure 6 and Figure 7 As shown, a plurality of ribs 14 are arranged at equal intervals in the upper corrugated portion 11. The ribs 14 are approximately in the shape of three-sided columns to enhance the lateral stability of the drag chain and resist the bending moment caused by gravity.

[0036] like Figure 6 、 Figure 7 、 Figure 10 and Figure 11 As shown, a plurality of outer stops 15 are provided on the belly of the trough portion 31 of the upper corrugated portion 11, and a plurality of inner stops 16 are fixedly provided 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, so that when the drag chain bends, the inner stops 16 and the outer stops 15 can locally reinforce the upper corrugated portion 11 to limit the sagging deformation of the drag chain.

[0037] like Figure 1-4As shown, the aspect ratio of the upper corrugated portion 11 and the lower corrugated portion 21 is greater than or equal to 1.7, wherein the aspect ratio of the upper corrugated portion 11 and the lower corrugated portion 21 can be 2.5, thereby realizing the flattening of the drag chain, so that it can adapt to narrow spaces (such as equipment interlayers) and maintain the bending resistance of the drag chain, avoiding the stop structure compensating for the loss of bending stiffness caused by the reduction in height.

[0038] like Figure 1-4 As shown, the peak portions 3 of the upper corrugated portion 11 and the lower corrugated portion 21 are inclined to both sides, and the transverse width of the peak portions 3 of the upper corrugated portion 11 and the lower corrugated portion 21 gradually decreases from the middle to both sides, so that the inclined flanks can disperse the bending stress from the middle section (high stress area) of the peak portion 3 to the flanks, thereby reducing stress concentration and optimizing the stress distribution. In addition, the flank spacing of the peak portion 3 increases as the width decreases (≤7mm), accommodating more pipelines within a limited width to increase the internal space of the drag chain.

[0039] like Figure 1-4 As shown, the thickness of the peak portion 3 is greater than the thickness of the trough portion 31, the peak thickness (0.5-2mm)> the trough thickness (0.5-1.0mm), the peak portion 3 bears the main compression / tensile stress, and thickening improves the anti-buckling ability. The trough portion 31 is highly flexible to achieve telescopic deformation, and thinning reduces the bending stiffness.

[0040] The lower shell 2 can retain the basic corrugated profile and provide upward bending flexibility by compressing the spacing of the peak part 3. The triangular stopper 13 and other components in the upper shell 1 can provide static support (the formula for resisting gravity bending moment is $M=\frac{wL^2}{8}$). The lower shell is flexible, thereby allowing dynamic bending (small curvature radius $R_{\text{min}}$) to meet the travel requirements of the moving pipeline. It has a flat cross-section and provides a larger pipeline accommodating space than a circular bellows at the same width. The corrugated gradient design of the peak part 3 can avoid stress mutation, delay crack initiation, and improve fatigue life.

[0041] like Figure 1-4 As shown, a sealing engagement mechanism is provided between the upper wing portion 12 and the lower wing portion 22, and the upper shell 1 and the lower shell 2 are snap-connected. The upper wing portion 12 and the lower wing portion 22 are extended and meshed to form a central axis surface (thickness ≤3mm). The central axis meshing ensures that the neutral layer (zero strain surface) coincides with the physical central axis during bending, reducing additional torque. The side wing meshing suppresses lateral misalignment between the upper shell 1 and the lower shell 2, preventing corrugation wear, and the thin central axis surface (≤3mm) reduces the hinge rotational inertia to ensure smooth bending.

[0042] like Figure 3 、 Figure 5 、 Figure 8 and Figure 9As shown, a plurality of engaging holes 4 are provided in the upper wing portion 12 and the lower wing portion 22, and a plurality of engaging teeth 41 are fixedly provided on one side of the upper wing portion 12 and the lower wing portion 22. The engaging teeth 41 of the upper wing portion 12 are engaged and snapped into the engaging holes 4 of the lower wing portion 22, and the engaging teeth 41 of the lower wing portion 22 are engaged and snapped into the engaging holes 4 of the upper wing portion 12. The upper wing portion 12 and the lower wing portion 22 can be connected by engaging the engaging teeth 41 and the engaging holes 4.

[0043] like Figure 3 、 Figure 5 、 Figure 8 and Figure 9 As shown, a plurality of positioning holes 42 are fixedly provided on one side of the lower wing portion 22, and a plurality of positioning plugs 43 are fixedly provided on one side of the upper wing portion 12 to be inserted into the positioning holes 42. By inserting the positioning plugs 43 into the positioning holes 42, the upper wing portion 12 and the lower wing portion 22 can be further connected and positioned, so that the engaging teeth 41 and the engaging holes 4 can be quickly aligned.

[0044] like Figure 3 、 Figure 5 、 Figure 8 and Figure 9 As shown, the sealing bite mechanism includes a sealing recessed hole 44 opened on one side of the upper side wing 12 and continuously distributed along the length direction of the upper side wing 12, and a sealing protrusion 45 fixed on one side of the lower side wing 22 and continuously distributed along the length direction of the lower side wing 22. The sealing protrusion 45 is inserted into the sealing recessed hole 44. After the sealing protrusion 45 is inserted into the sealing recessed hole 44, the upper side wing 12 and the lower side wing 22 will bite each other, thereby sealing the upper shell 1 and the lower shell 2, which can effectively prevent dust, debris and other pollutants from leaking from the inside of the drag chain, keeping the working environment clean, and is particularly suitable for dust-sensitive environments, such as electronics, food, medicine and other industries. In combination with the engagement teeth 41 and the positioning plug 43 and other components, the upper shell 1 and the lower shell 2 can be multiplexed and fixed, thereby improving the stability after installation and resisting the lateral dislocation of the drag chain.

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

[0046] It should be noted that when using this high-strength pipeline guide drag chain specially designed for clean workshops, the upper shell 1 is first placed on the top of the lower shell 2 so that the positioning plug 43 can be inserted into the positioning hole 42, and then the upper shell 1 is pressed down and buckled on the lower shell 2. At this time, the engaging teeth 41 and the engaging holes 4 will quickly engage with each other, and the upper side wing 12 and the lower side wing 22 can be connected. After the sealing protrusion 45 is inserted into the sealing recess 44, the upper side wing 12 and the lower side wing 22 will engage with each other, thereby sealing the upper shell 1 and the lower shell 2, which can effectively prevent dust, debris and other pollutants from leaking out of the inside of the drag chain, keeping the working environment clean.

[0047] By adding triangular stops 13 in the peak portion 3 in the upper shell 1, adjacent triangular stops 13 collide to form a rigid support chain, thereby limiting the downward deformation of the drag chain. The lower shell 2 can retain the basic corrugated profile and provide upward bending flexibility by compressing the spacing of the peak portions 3. The spacing between adjacent triangular stops 13 is equal to the spacing between adjacent peak portions 3, ensuring that the triangular stops 13 can contact at any position to form a continuous support beam, so that the drag chain can be suspended for an ultra-long stroke and can be used in a narrow space. In addition, structures such as the sealing bite mechanism can improve the sealing effect and dustproofness of the drag chain.

[0048] The overall corrugated design of "directional flexibility + local rigidity" and the fastening method of "central hinge + flank constraint" achieve adaptability to narrow spaces (low aspect ratio + small bending radius), anti-droop stability (supported by 13 triangular stops on the side abdomen), movement reliability (low resistance bending + resistance to lateral dislocation) and life optimization (uniform stress distribution) 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 clean rooms, solving the contradiction between traditional solutions that are difficult to strike a balance between rigidity and flexibility in narrow spaces.

[0049] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A high-strength pipeline guide drag chain for a cleanroom, 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 arranged 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 arranged on both sides of the lower corrugated portion (21), and the upper corrugated portion (11) and the lower corrugated portion (21) are both provided with a crest portion (3) and a trough portion (31), characterized in that: The belly of the crest portion (3) of the upper corrugated portion (11) is provided with a plurality of triangular stops (13), and adjacent triangular stops (13) are bent and abutted to form a rigid support chain. A plurality of ribs (14) are arranged at equal intervals in the upper corrugated portion (11), and the belly of the trough portion (31) of the upper corrugated portion (11) is provided with a plurality of external stops (15). A plurality of internal stops (16) are fixedly provided between the upper corrugated portion (11) and the inner side of the ribs (14). A sealing engagement mechanism is provided between the upper wing portion (12) and the lower wing portion (22).

2. The high-strength pipeline guide drag chain for cleanrooms according to claim 1, characterized in that: The spacing between adjacent triangular stops (13) is equal to the spacing between adjacent peak portions (3) of the upper corrugated portion (11).

3. The high-strength pipeline guide drag chain for cleanrooms according to claim 1, characterized in that: The width-to-height ratios of the upper corrugated portion (11) and the lower corrugated portion (21) are both 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. The high-strength pipeline guide drag chain for cleanrooms according to claim 1, characterized in that: The peaks (3) of the upper corrugated portion (11) and the lower corrugated portion (21) are inclined toward both sides, and the transverse widths of the peaks (3) of the upper corrugated portion (11) and the lower corrugated portion (21) gradually decrease from the middle to both sides.

5. The high-strength pipeline guide drag chain for cleanrooms according to claim 1, characterized in that: A plurality of engaging holes (4) are provided in the upper wing portion (12) and the lower wing portion (22), and a plurality of engaging teeth (41) are fixedly provided on one side of the upper wing portion (12) and the lower wing portion (22). The engaging teeth (41) of the upper wing portion (12) are engaged and snapped into the engaging holes (4) of the lower wing portion (22), and the engaging teeth (41) of the lower wing portion (22) are engaged and snapped into the engaging holes (4) of the upper wing portion (12).

6. The high-strength pipeline guide drag chain for cleanrooms according to claim 5, characterized in that: One side of the lower wing portion (22) is fixedly provided with a plurality of positioning holes (42), and one side of the upper wing portion (12) is fixedly provided with a plurality of positioning plugs (43) that are matched and inserted into the positioning holes (42).

7. The high-strength pipeline guide drag chain for cleanrooms according to claim 6, characterized in that: The sealing engagement mechanism comprises a sealing recessed hole (44) provided on one side of the upper wing portion (12) and continuously distributed along the length direction of the upper wing portion (12), and a sealing protrusion (45) fixedly provided on one side of the lower wing portion (22) and continuously distributed along the length direction of the lower wing portion (22), wherein the sealing protrusion (45) is fitted and inserted into the sealing recessed hole (44).

8. The high-strength pipeline guide drag chain for cleanrooms according to claim 1, characterized in that: A plurality of convex strips (5) are fixedly provided on one side of the upper wing portion (12) and the lower wing portion (22).

Images