Heavy-load expansion bridge type drag chain

Abstract

The utility model discloses a heavy-load expansion bridge type drag chain, which belongs to the technical field of drag chains and is characterized in that the drag chain made of high-strength engineering plastics comprises a plurality of rows of support frames arranged in parallel at intervals, each row of support frames comprises a plurality of chain plates and connecting plates at two ends of the chain plates, the chain plates at the tail end are rotationally connected with the connecting plates, and the chain plates at the tail end are rotationally connected with the connecting plates. Free bending of the drag chain is facilitated; the tops and the bottoms of the chain plates and the connecting plates of every two adjacent rows of supporting frames are connected through detachable cross beams, and cavities defined by every two adjacent supporting frames and the upper cross beam and the lower cross beam are used for containing cables and pipelines. The drag chain is simple and compact in structure and convenient to assemble, and the drag chain made of high-strength engineering plastics has higher compression resistance and tension resistance, so that the requirements of heavy machinery are met; the plurality of rows of supporting frames and the upper and lower cross beams form a plurality of cavities for simultaneously arranging a plurality of cables, oil pipes, air pipes or water pipes, so that the cables and various pipelines are orderly distributed and do not interfere with each other; and the detachable cross beam is convenient to mount or maintain, so that the convenience is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of drag chain, especially relates to a heavy load expansion bridge type drag chain. BACKGROUND

[0002] Drag chain is often used in various mechanical equipment, is used for guiding and protecting cable and various pipelines, can adapt to the use requirement of different equipment and different scenes. Usually, the cable and various pipelines need to be installed in the inner cavity before the installation of the drag chain, the length of the inner cavity of the assembled existing drag chain is relatively long, and it is time-consuming and laborious to thread during installation and maintenance, and the existing drag chain is mostly light strength drag chain, micro heavy strength drag chain and medium strength drag chain, cannot adapt to heavy load working conditions, and the existing drag chain also has the problems of heavy structure, complicated installation and maintenance. Therefore, a kind of assembled drag chain with simple structure and convenient loading and unloading is needed to adapt to heavy load operation condition. INVENTION CONTENTS

[0003] In order to solve the above problems, the utility model provides a kind of heavy load expansion bridge type drag chain.

[0004] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0005] A kind of heavy load expansion bridge type drag chain, the drag chain is made of high-strength engineering plastic, the drag chain includes multiple rows of parallel spaced support frames, each row of support frames includes multiple chain plates and connecting plates at both ends thereof connected in sequence, the end chain plate is rotatably connected with the connecting plate, the top and bottom of the chain plate and the connecting plate of the adjacent two rows of support frames are connected by a cross beam, and the cross beam is detachably connected with the chain plate and the connecting plate;The cavity surrounded by every two adjacent support frames and upper and lower cross beams is used to accommodate cables and pipelines.

[0006] Further, the chain plate and the connecting plate, and the adjacent chain plates are connected by a rotating structure, and the two ends of the cross beam are detachably connected with the chain plate and the connecting plate by a connecting structure.

[0007] Further, the rotating structure includes a positioning shaft, a positioning hole matched with the positioning shaft, two limiting shafts and a waist-shaped limiting slot matched with the limiting shafts, the two limiting shafts are symmetrically arranged on the two sides of the positioning shaft, one end of the positioning shaft is provided with a gable, and a step for limiting the gable is arranged on the inner wall of the positioning hole;The positioning shaft and the two limiting shafts are arranged on the end inner side of the connecting plate or the chain plate, and the positioning shaft and the two limiting shafts are arranged in the circular positioning slot at the end of the connecting plate or the chain plate;The positioning hole and the waist-shaped limiting slot on both sides thereof are arranged at the end of the chain plate or the connecting plate adjacent to the connecting plate or the chain plate, and the edge of the sunken platform where the positioning hole and the waist-shaped limiting slot are located can be rotatably matched with the circular positioning slot.

[0008] The two end edges of the chain plate are circular arc shapes, a protruding positioning shaft and a limiting shaft are arranged in a circular positioning groove on the inner side of one end of the chain plate, and a positioning hole and a waist-shaped limiting slot are arranged on a circular sink on the outer side of the other end of the chain plate.

[0009] The connecting plate at one end of the drag chain is provided with a positioning shaft and a limiting shaft matched with the adjacent chain plate, and the connecting plate at the other end is provided with a positioning hole and a waist-shaped limiting slot matched with the adjacent chain plate.

[0010] Further, the connecting structure comprises a sliding groove, a clamping groove and a connecting head, the sliding groove and the clamping groove are arranged at the two ends of the cross beam, the sliding groove is arranged at the bottom of the two ends of the cross beam, and the clamping groove is arranged at the middle part of the sliding groove and is arranged perpendicular to the length direction of the cross beam; the connecting head is arranged at the inner side of the chain plate and the connecting plate near the middle edge, the two sides of the connecting head can be matched with the sliding groove, and the outer side of the connecting head is provided with a boss matched with the clamping groove.

[0011] Further, the boss is arranged at the middle part of the outer side of the connecting head, and the bottom of the connecting head is provided with a guide table matched with the sliding groove.

[0012] Further, the two sides of the two ends of the cross beam are symmetrically provided with reinforcing parts, and a plurality of weight reduction grooves are arranged on the outer side of the cross beam.

[0013] Further, one or more partitions are arranged between the cross beams corresponding to the upper and lower cross beams, the partitions are arranged parallel to the chain plate and the connecting plate, and the upper and lower ends of the partitions are detachably connected with the cross beams.

[0014] Further, the end part of the upper and lower edges of the partition is provided with a U-shaped groove, the two inner walls of the U-shaped groove can be slidably matched with the edges of the cross beam, and a plurality of weight reduction holes are arranged on the partition in a spaced manner.

[0015] Further, the chain plate, the connecting plate, the cross beam and the partition are integrally injection molded by using reinforced nylon material.

[0016] Further, the two ends of the bottom of every two adjacent supporting frames are provided with a comb-shaped structure, the comb-shaped structure comprises a comb-shaped plate and a fixed plate, the two ends of the fixed plate are connected with the connecting plate through clamping, a strip-shaped dovetail groove is arranged on the top surface of the fixed plate, and a mounting strip matched with the dovetail groove is arranged on the connecting end bottom surface of the comb-shaped plate.

[0017] Compared with the prior art, the technical progress achieved by the utility model lies in:

[0018] The utility model discloses a drag chain made of high-strength engineering plastic has higher compression resistance and tensile strength, can satisfy the high speed emergency stop demand of heavy machinery, multiple rows of supporting frames and upper and lower cross beams form the cavity containing cable and various pipelines, multiple cavities can arrange multiple cables, oil pipes, gas pipes or water pipes simultaneously, ensure that cable and various pipelines are orderly distributed and do not interfere with each other, each row of supporting frames is formed by multiple chain plates and connecting plates at both ends of the chain plates, and the drag chain is convenient for realizing free bending, meanwhile, the upper and lower cross beams, the chain plates and the connecting plates adopt detachable connection, and the convenience is improved without threading and installing or maintaining, the comb structure between the connecting plates at both ends can limit cable and pipeline, reduce horizontal swing, ensure that cable and pipeline keep stable motion track during the extension or bending of the drag chain, and improve the service life of cable and pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute the limitation to the utility model.

[0020] In the drawings:

[0021] Figure 1 It is a structure schematic view of heavy load expansion bridge type drag chain for the embodiment of the utility model;

[0022] Figure 2 It is the inside structure schematic view of chain plate in the embodiment of the utility model;

[0023] Figure 3 It is Figure 2 The outside structure schematic view of chain plate;

[0024] Figure 4 It is the inside structure schematic view of connecting plate in the embodiment of the utility model;

[0025] Figure 5 It is Figure 4 The outside structure schematic view of connecting plate;

[0026] Figure 6 It is the outside structure schematic view of cross beam in the embodiment of the utility model;

[0027] Figure 7 It is Figure 6 The inside structure schematic view of cross beam;

[0028] Figure 8 It is the structure schematic view of baffle in the embodiment of the utility model;

[0029] Figure 9 It is the structure schematic view of comb structure in the embodiment of the utility model;

[0030] Figure 10 It is the end structure diagram of connecting plate in the embodiment of the utility model;

[0031] In the drawing,

[0032] 100-support frame; 1-chain plate; 2-connecting plate; 3-crossbeam; 4-positioning shaft; 5-positioning hole; 6-limiting shaft; 7-waist-shaped limiting groove; 8-positioning groove; 9-sunken platform; 10-slotted guide; 11-clamping groove; 12-connecting head; 13-convex platform; 14-guiding platform; 15-strengthening part; 16-lightening groove; 17-baffle; 18-U-shaped groove; 19-lightening hole; 20-comb-shaped plate; 21-fixing plate; 22-dovetail groove; 23-mounting strip; 24-mounting groove; 25-convex eave; 26-step. DETAILED DESCRIPTION

[0033] The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments. The embodiments of the utility model will be described below with reference to the drawings.

[0034] As Figure 1 shown, a heavy-duty expansion bridge type drag chain is made of high-strength engineering plastic, has high compression and tensile resistance, and can meet the high-speed emergency stop requirements of heavy machinery; the drag chain comprises multiple rows of parallel and spaced support frames 100, each row of support frames 100 comprises multiple chain plates 1 and connecting plates 2 at both ends of the chain plates 1 which are connected in sequence and rotate, the end chain plate 1 is connected in rotation with the connecting plate 2, and the top and bottom of the chain plates 1 and the connecting plates 2 of the two adjacent rows of support frames 100 are connected through crossbeams 3, and the crossbeams 3 are detachably connected with the chain plates 1 and the connecting plates 2; the cavities surrounded by the two adjacent support frames 100 and the upper and lower crossbeams 3 are used for accommodating cables and pipelines. Among them, the chain plates 1 and the connecting plates 2, and the adjacent chain plates 2 are connected through rotating structures, the two ends of the crossbeams 3 are detachably connected with the chain plates 1 and the connecting plates 2 through connecting structures, and there is no need to thread during assembly, which is more convenient for laying cables and various pipelines, and the crossbeams can be removed for quick searching during maintenance of cables and pipelines; the specific number of rows of support frames can be designed according to actual requirements, and the multiple rows of support frames and the upper and lower crossbeams form cavities for accommodating cables and various pipelines, and the multiple cavities can simultaneously arrange multiple cables, oil pipes, gas pipes or water pipes, so as to ensure that the cables and various pipelines are distributed in order and do not interfere with each other.

[0035] In the specific embodiment of the utility model, as Figures 2-5As shown, the rotating structure comprises a positioning shaft 4, a positioning hole 5 matched with the positioning shaft 4, two limiting shafts 6 and a waist-shaped limiting slot 7 matched with the limiting shafts 6, the two limiting shafts 6 are symmetrically arranged on the two sides of the positioning shaft 4, one end of the positioning shaft 4 is provided with a convex eave 25, and a step 26 for limiting the convex eave 25 is arranged on the inner wall of the positioning hole 5; the positioning shaft 4 and the two limiting shafts 6 are arranged on the inner side of one end of the connecting plate 2 or the chain plate 1, and the positioning shaft 4 and the two limiting shafts 6 are arranged in the circular positioning slot 8 at the end of the connecting plate 2 or the chain plate 1; the positioning hole 5 and the waist-shaped limiting slot 7 on the two sides of the positioning hole 5 are arranged at the end of the chain plate 1 or the connecting plate 2 adjacent to the connecting plate 2 or the chain plate 1, and the edge of the sunken platform 9 where the positioning hole 5 and the waist-shaped limiting slot 7 are located can be rotationally matched with the circular positioning slot 8; the edge of one end of the connecting plate 2 matched with the chain plate 1 is arc-shaped, the edges of the two ends of the chain plate 1 are arc-shaped, the circular positioning slot 8 on the inner side of one end of the chain plate 1 is provided with the protruding positioning shaft 4 and the limiting shaft 6, and the circular sunken platform 9 on the outer side of the other end of the chain plate 1 is provided with the positioning hole 5 and the waist-shaped limiting slot 7; the connecting plate 2 at one end of the drag chain is provided with the positioning shaft 4 and the limiting shaft 6 matched with the adjacent chain plate 1, and the other end of the connecting plate 2 is provided with the positioning hole 5 and the waist-shaped limiting slot 7 matched with the adjacent chain plate 1. By adopting the above structure, the positioning shaft can be inserted into the positioning hole, the limiting shaft can be inserted into the waist-shaped limiting slot, and the limiting shaft can swing in the waist-shaped limiting slot, so that the purpose of bending the drag chain can be achieved. At the same time, two notches are symmetrically arranged on the side wall of the positioning shaft 4, which can adapt to slight vibration during operation of the drag chain.

[0036] When assembling the drag chain, the positioning shaft and the limiting shaft on the connecting plate and the chain plate are pressed and buckled in the positioning hole and the waist-shaped limiting slot of the adjacent chain plate and the connecting plate in sequence, so that the plurality of chain plates are rotationally matched in sequence, the two end chain plates are rotationally matched with the connecting plates, the positioning shaft rotates in the positioning hole during application, the waist-shaped limiting slot can provide sliding space for the limiting shaft, and the bending requirement of the drag chain is met.

[0037] During specific manufacturing, the circular positioning slot and the sunken platform are lower than the surface of the chain plate where they are located, and by adopting the structure, the inner and outer surfaces of the chain plate and the connecting plate can be flush after the chain plate and the connecting plate are matched, so that interference to the internal cable and pipeline is avoided.

[0038] In the specific embodiment of the utility model, as shown in the figure, Figure 1 , 6As shown in Figure 7, the connecting structure includes a sliding groove 10, a slot 11, and a connector 12. The sliding groove 10 and the slot 11 are located at both ends of the crossbeam 3. The sliding groove 10 is located at the bottom of both ends of the crossbeam 3, and the slot 11 is located in the middle of the sliding groove 10 and is perpendicular to the length direction of the crossbeam 3. The connector 12 is correspondingly located on the inner side of the chain plate 1 and the connecting plate 2 near the middle edge. The two sides of the connector 12 can cooperate with the sliding groove 10, and the outer side of the connector 12 is provided with a boss 13 that cooperates with the slot 11. The boss 13 is located in the middle of the outer side of the connector 12, and the bottom of the connector 12 is provided with a guide platform 14 that cooperates with the sliding groove 10. In specific assembly, the connectors on the inner sides of the upper and lower ends of the chain plate and the connecting plate can be slid into the sliding groove of the crossbeam, and the bosses at the ends of the connectors can be slid into the slots to achieve the connection and fixation between the crossbeam and the chain plate and the connecting plate. Meanwhile, the use of the above-mentioned prefabricated structure of the crossbeam makes it convenient to lay cables, oil pipes, gas pipes, water pipes, etc. during the assembly of the cable chain, and also facilitates the later maintenance of internal cables and pipelines, making the operation convenient and quick.

[0039] Further optimize the above structure, such as Figure 6 , 7 As shown, the crossbeam 3 has symmetrical reinforcing sections 15 on both sides at both ends, which increases the contact area between the crossbeam and the chain plate and connecting plate, further improving the overall strength of the crossbeam and the cable chain. The outer surface of the crossbeam 3 has several weight-reducing grooves 16, which are located between the two side slots 11, reducing material consumption and overall weight. Similarly, the chain plate and connecting plate also have multiple weight-reducing grooves.

[0040] In specific embodiments of this utility model, such as Figure 1 , 8 As shown, one or more partitions 17 are provided between the upper and lower corresponding crossbeams 3. The partitions 17 are arranged parallel to the chain plate 1 and the connecting plate 2, and the upper and lower ends of the partitions 17 are detachably connected to the crossbeams 3. The upper and lower edges of the partitions 17 are provided with U-shaped grooves 18, and the inner walls of the U-shaped grooves 18 can slide and engage with the edges of the crossbeams 3. This structure facilitates the adjustment of the position of the partitions on the crossbeams, and multiple partitions can be installed side-by-side as needed, further providing sufficient independent space for cables and various pipelines. In a specific design, multiple weight-reducing holes 19 are spaced apart along the length of the partitions 17, and these holes are located between the U-shaped grooves 18 at both ends. Similar to the weight-reducing grooves on the crossbeams and chain plates, this reduces material usage and the weight of the cable chain, and also reduces deformation caused by shrinkage.

[0041] In the specific manufacturing process, the chain plate 1, the connecting plate 2, the cross beam 3 and the partition plate 17 are integrally injection molded by using reinforced nylon material. The process is convenient for batch production, and the superior compression resistance and tensile resistance of the reinforced nylon material improve the compression resistance and tensile resistance of the drag chain, meet the high-speed emergency stop requirements of heavy machinery, and have good toughness, high elasticity, wear resistance, oil resistance, salt resistance and certain acid and alkali resistance, supporting long-term outdoor use.

[0042] Further optimize the above scheme, such as Figure 1 、 9 , 10, the two ends of the two adjacent support frames 100 are provided with a comb-shaped structure, the comb-shaped structure includes a comb-shaped plate 20 and a fixed plate 21, the two ends of the fixed plate 21 are connected with the connecting plate 2 through clamping, the top surface of the fixed plate 21 is provided with a strip-shaped dovetail groove 22, and the connecting end bottom surface of the comb-shaped plate 20 is provided with a mounting strip 23 matched with the dovetail groove 22; the inner wall bottom of the connecting plate 2 is provided with a mounting groove 24 matched with the end dovetail groove 22 of the fixed plate 21. The above-mentioned comb-shaped structure can be used as a limiting structure of the cable and pipeline, so as to ensure that the cable and pipeline maintain a stable motion track during the bending of the drag chain, reduce the transverse swing of the cable and pipeline, and reduce the wear and fatigue fracture risk caused by disordered motion.

[0043] In the specific manufacturing process, in order to improve the versatility of the connecting plate, mounting grooves are designed at the upper and lower parts of the connecting plate, so that the connecting plate can be quickly installed.

[0044] In summary, the utility model has the advantages of simple and compact structure, convenient and fast disassembly and assembly, chain plate, connecting plate, cross beam and partition plate are all assembled structure, which is convenient and fast to assemble, the chain plate, connecting plate and upper and lower cross beams are surrounded by multiple support frames and multiple partition plates to form a cavity for separation, which is convenient for classification of cables, oil pipes, gas pipes and water pipes; the cross beam can be disassembled and assembled, which can be completed without threading during installation and maintenance of cables, oil pipes, gas pipes and water pipes, improving the work efficiency. The drag chain made of reinforced nylon material has high compression resistance and tensile resistance, which can meet the high-speed emergency stop requirements of heavy machinery; the comb-shaped structure at both ends of the drag chain can limit the cable and pipeline, reduce the transverse swing, ensure the stability of the cable and pipeline during the stretching or bending of the drag chain, reduce the wear, and prolong the service life of the cable and pipeline.

[0045] It should be explained finally: the above described is only the preferred embodiment of the utility model, and is not used for limiting the utility model, although the utility model is described in detail with reference to the foregoing embodiment, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement is carried out to part of technical features. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be contained in the scope of protection of the utility model claim.

Claims

1. A heavy-duty extended bridge-type cable chain, characterized in that: The cable chain is made of high-strength engineering plastic. The cable chain includes multiple rows of parallel and spaced support frames. Each row of support frames includes multiple chain plates that are rotatably connected in sequence and connecting plates at both ends. The end chain plates are rotatably connected to the connecting plates. The top and bottom of the chain plates and connecting plates of two adjacent rows of support frames are connected by crossbeams. The crossbeams are detachably connected to the chain plates and connecting plates. The cavity enclosed by the two adjacent support frames and the upper and lower crossbeams is used to accommodate cables and pipelines.

2. The heavy-duty extended bridge cable chain according to claim 1, characterized in that: The chain plate and the connecting plate, as well as adjacent chain plates, are all connected by a rotating structure. The two ends of the crossbeam are detachably connected to the chain plate and the connecting plate by a connecting structure.

3. A heavy-duty extended bridge cable chain according to claim 2, characterized in that: The rotating structure includes a positioning shaft and a corresponding positioning hole, two limiting shafts and corresponding waist-shaped limiting grooves. The two limiting shafts are symmetrically arranged on both sides of the positioning shaft. One end of the positioning shaft is provided with a protruding eave, and the inner wall of the positioning hole is provided with a step for limiting the protruding eave. The positioning shaft and the two limiting shafts are located on the inner side of one end of the connecting plate or chain plate, and the positioning shaft and the two limiting shafts are located in the circular positioning groove at the end of the connecting plate or chain plate. The positioning hole and the waist-shaped limiting grooves on both sides are located at the end of the chain plate or connecting plate adjacent to the connecting plate or chain plate, and the edge of the recess where the positioning hole and the waist-shaped limiting groove are located can rotate and cooperate with the circular positioning groove. Both ends of the chain plate are rounded. The inner side of one end of the chain plate has a circular positioning groove with a protruding positioning shaft and a limiting shaft, and the outer side of the other end has a circular recessed platform with a positioning hole and a waist-shaped limiting groove. The connecting plate at one end of the drag chain is provided with a positioning shaft and a limiting shaft that cooperate with the adjacent chain plate, and the connecting plate at the other end is provided with a positioning hole and a waist-shaped limiting groove that cooperate with the adjacent chain plate.

4. A heavy-duty extended bridge cable chain according to claim 2, characterized in that: The connecting structure includes a slide groove, a slot, and a connector. The slide groove and the slot are located at both ends of the crossbeam. The slide groove is located at the bottom of both ends of the crossbeam, and the slot is located in the middle of the slide groove and is perpendicular to the length direction of the crossbeam. The connector is located on the inner side of the chain plate and the connecting plate near the middle edge. Both sides of the connector can cooperate with the slide groove, and the outer side of the connector is provided with a boss that cooperates with the slot.

5. A heavy-duty extended bridge cable chain according to claim 4, characterized in that: The boss is located on the outer middle part of the connector, and the bottom of the connector is provided with a guide platform that cooperates with the slide groove.

6. A heavy-duty extended bridge cable chain according to claim 4, characterized in that: The crossbeam has symmetrical reinforcements on both sides at both ends; the outer surface of the crossbeam has several weight-reducing grooves, which are located between the two side slots.

7. A heavy-duty extended bridge cable chain according to claim 2, characterized in that: One or more partitions are provided between the upper and lower corresponding crossbeams. The partitions are arranged parallel to the chain plate and the connecting plate. The upper and lower ends of the partitions are detachably connected to the crossbeams.

8. A heavy-duty extended bridge cable chain according to claim 7, characterized in that: The upper and lower edges of the partition are provided with U-shaped grooves, and the inner walls of the two sides of the U-shaped grooves can slide and engage with the edges of the crossbeam.

9. A heavy-duty extended bridge cable chain according to claim 8, characterized in that: The chain plate, connecting plate, crossbeam and partition are all integrally injection molded from reinforced nylon material.

10. A heavy-duty extended bridge cable chain according to any one of claims 2-9, characterized in that: Each pair of adjacent support frames has a comb-like structure at both ends of its bottom. The comb-like structure includes a comb plate and a fixing plate. The two ends of the fixing plate are snapped together with the connecting plate. The top surface of the fixing plate has a strip-shaped dovetail groove. The bottom surface of the connecting end of the comb plate has an installation strip that mates with the dovetail groove.

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