Silent drag chain

Abstract

The utility model is suitable for the technical field of drag chain, provide a kind of mute drag chain, including outer joint, inner joint and be provided with between the multiple chain block mechanism of the outer joint and the inner joint. That mute drag chain, the outer contour of two side cover structures in the chain block mechanism of the device is semicircle rectangle, two ends are formed into symmetrical arc structure through inside concave surface and outside concave surface, this design retains the stable supporting property of rectangular structure, and stress concentration when bending is dispersed by semicircle profile, so that the load of chain block when rotating can be smoothly transmitted by shaft center, reduce local deformation, and between the two chain block mechanisms of mutual connection are formed into double-end guiding limiting structure by first guide block, second guide notch and second guide block, first guide notch, so that the chain block mechanism stability of the device in horizontal direction is stronger, the probability of " collapse " is lower, under the effect of sound-absorbing piece, mechanical vibration can also be reduced by buffering, to reduce noise.

Description

Technical Field

[0001] This utility model belongs to the field of cable chain technology, and in particular relates to a silent cable chain. Background Technology

[0002] Cable chains are an accessory used in intelligent equipment. They can coordinate with the moving parts of mechanical equipment, providing safety protection and guidance. They can extend the service life of protected cables, oil pipes, and air pipes, reduce consumption, and greatly improve the messy distribution of cables, oil pipes, and air pipes in mechanical equipment, making them neat and orderly arranged, thus enhancing the overall value of the mechanical equipment.

[0003] Currently, during actual operation and coordination, individual cable chain links are subject to mechanical friction and vibration, which can generate significant noise. Additionally, some cable chains have limited load-bearing capacity. When the cable chain is long, it may bend to varying degrees under its own weight and the influence of internal cables and pipes, resulting in "collapse." This can lead to increased equipment failure rates and affect the service life of the cable chain. Utility Model Content

[0004] This utility model provides a silent cable chain, which aims to solve the problems of high noise during the operation of current cable chains and the "collapse" that leads to increased equipment failure rate.

[0005] This utility model is implemented as follows: a silent cable chain includes an outer connector, an inner connector, and multiple chain block mechanisms disposed between the outer connector and the inner connector; the multiple chain block mechanisms have identical structures, one of which includes two mutually symmetrical side cover structures, and end cover structures are detachably installed above and below the two side cover structures; the two side cover structures have identical structures, one of which includes a plate with a semi-circular rectangular outer contour, the inner and outer surfaces of the two ends of the plate extending inward to the centerline of its thickness direction to form a circular outer concave surface with an outer diameter equal to the diameter of its semi-circular contour. The inner concave surface has a bushing body fixedly connected to the middle of the outer concave surface. A shaft hole corresponding to the bushing body is opened laterally through the middle of the inner concave surface. A first guide block is fixedly connected to the inner end of the outer surface of the outer concave surface. A sound-absorbing plate is detachably installed on the first guide block. A second guide block is fixedly connected to the inner end of the inner surface of the inner concave surface. A semi-arc first guide groove and a second guide groove corresponding to the second guide block and the first guide block, respectively, are opened at the outer end of the outer surface of the outer concave surface and the outer end of the inner surface of the inner concave surface. The inner end of the second guide groove is expanded outward to form an arc-shaped expansion groove adapted to the sound-absorbing plate.

[0006] Preferably, a device groove is provided in the middle of the upper and lower surfaces of the two plates, and a connecting shaft and a snap-fit ​​ladder block are fixedly connected inside the two device grooves on the same plate.

[0007] Preferably, the connecting shafts and the snap-fit ​​ladder blocks on the two plates are arranged in opposite directions.

[0008] Preferably, the two end cap structures are identical in structure. One of the end cap structures includes a horizontal plate. One end of the horizontal plate is fixedly connected to a semi-annular shaft retainer block corresponding to the connecting shaft. The other end of the horizontal plate is fixedly connected to an L-shaped fixing seat. The outer end of the fixing seat is provided with a sliding hole and multiple spring holes. A sliding rod is laterally slidably connected inside the sliding hole. The other end of the sliding rod is fixedly connected to a snap-fit ​​block. Multiple tension springs are laterally fixedly connected between the inner surface of the snap-fit ​​block and the spring holes. When the multiple tension springs are not under force, a snap-fit ​​groove that matches the outer contour of the snap-fit ​​step block is formed between the snap-fit ​​block and the fixing seat.

[0009] Preferably, a partition plate is detachably installed in the middle between the two end plate structures.

[0010] Preferably, the outer surfaces of the outer concave surfaces on both plates are provided with multiple weight-reducing slots that extend laterally through each other.

[0011] Beneficial effects Compared with the prior art, the beneficial effects of this utility model are as follows: The silent cable chain of this utility model, by setting a first guide block, a second guide block, a first guide groove, a second guide groove, and a sound-absorbing plate, has two side cover structures in the chain block mechanism with semi-circular rectangles on their outer contours. The two ends form a symmetrical arc structure through the inner and outer concave surfaces. This design retains the stable support of the rectangular structure and disperses the stress concentration during bending through the semi-circular contour. The concave structure, together with the central bushing and shaft hole, forms a shaft system support with uniform force distribution, so that the load of the chain block can be smoothly transmitted through the shaft center during rotation, reducing local deformation. Furthermore, the two interconnected chain block mechanisms form a double-end guide and limiting structure through the first guide block, the second guide groove, and the second guide block, the first guide groove, making the chain block mechanism of this device more stable in the horizontal direction and reducing the probability of "collapse". Under the action of the sound-absorbing plate, mechanical vibration can also be reduced through buffering, thereby reducing noise. Attached Figure Description

[0012] Figure 1 This is a schematic diagram showing the fit between the inner and outer connector box chain blocks of this utility model; Figure 2 This is a schematic diagram of the chain block mechanism in this utility model; Figure 3This is an exploded view of the chain block mechanism in this utility model; Figure 4 This is a schematic diagram showing the engagement of the snap-fit ​​ladder block and the snap-fit ​​structure in this utility model.

[0013] In the diagram: 1-external connector, 2-inner connector, 3-chain block mechanism, 31-plate, 32-end cap, 33-partition plate, 34-shaft sleeve, 35-first guide groove, 36-weight reduction groove, 37-shaft hole, 38-second guide groove, 39-first guide block, 310-silencing plate, 311-second guide block, 312-device groove, 313-connecting shaft, 314-clamping ladder block, 315-shaft clamping block, 316-fixed seat, 317-slide rod, 318-tension spring, 319-clamping block. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0015] Please see Figure 1-4 This utility model provides a technical solution: a silent cable chain, including an outer connector 1, an inner connector 2, and multiple chain block mechanisms 3 disposed between the outer connector 1 and the inner connector 2; the multiple chain block mechanisms 3 have the same structure, one of the chain block mechanisms 3 includes two mutually symmetrical side cover structures, and end cover structures are detachably installed above and below the two side cover mechanisms; the two side cover structures have the same structure, one of the side cover structures includes a plate 31 with a semi-circular rectangular outer contour, the inner and outer surfaces of the two ends of the plate 31 respectively extend inward to the centerline of its thickness direction to form a circular outer concave surface and an inner concave surface with an outer diameter the same as the diameter of its semi-circular contour. A bushing 34 is fixedly connected to the middle of the outer concave surface. A shaft hole 37 corresponding to the bushing 34 is opened transversely through the middle of the inner concave surface. A first guide block 39 is fixedly connected to the inner end of the outer surface of the outer concave surface. A sound-absorbing plate 310 is detachably installed on the first guide block 39. A second guide block 311 is fixedly connected to the inner end of the inner surface of the inner concave surface. A semi-arc first guide groove 35 and a second guide groove 38 corresponding to the second guide block 311 and the first guide block 39, respectively, are opened at the outer end of the outer surface of the outer concave surface and the outer end of the inner surface of the inner concave surface. The inner end of the second guide groove 38 is expanded outward to form an arc-shaped expansion groove that matches the sound-absorbing plate 310.

[0016] In this embodiment, multiple chain block mechanisms 3 are provided between the outer connector 1 and the inner connector 2 of the device. The multiple chain block mechanisms 3 are connected end to end. When two chain block mechanisms 3 are connected, the bushing body 34 of the outer concave surface of the two side cover structures on one chain block mechanism 3 is installed inside the shaft hole 37 opened on the inner concave surface of the two side cover structures on the other chain block mechanism 3, so that the two chain block mechanisms 3 can rotate relative to each other. At the same time, the two chain block mechanisms 3 connected to each other form a double-end guide and limiting structure through the first guide block 39, the second guide groove 38 and the second guide block 311, and the first guide groove 35, so that the connected chain block mechanisms 3 can be more stable in the horizontal direction and will not easily "collapse", reducing the failure rate in the processing process and improving the service life of the drag chain.

[0017] A sound-absorbing plate 310 is also provided on the first guide block 39. Its overall shape is C-shaped, and there are elastic protrusions on its upper and lower sides, which correspond to the arc-shaped expansion groove. When the interconnected chain block mechanism 3 bends, the sound-absorbing plate 310 can buffer the movement and reduce mechanical vibration, thereby reducing noise.

[0018] Both ends of the outer connector 1 and the inner structure 2 are also provided with the same connection structure as the plate 31. The inner and outer surfaces of both are respectively provided with the same structure as the inner concave surface and outer concave surface in the chain block mechanism 3, which can be connected to the chain block mechanism 3.

[0019] Furthermore, device slots 312 are provided in the middle of the upper and lower surfaces of the two plates 31, and connecting shafts 313 and snap-fit ​​ladder blocks 314 are fixedly connected inside the two device slots 312 on the same plate 31.

[0020] The connecting shaft 313 and the snap-fit ​​ladder block 314 on the two plates 31 are set in opposite directions.

[0021] Both end cap structures are identical. One end cap structure includes a horizontal plate 32. One end of the horizontal plate 32 is fixedly connected to a semi-annular shaft retainer 315 corresponding to the connecting shaft 313. The other end of the horizontal plate 32 is fixedly connected to an L-shaped fixing seat 316. The outer end of the fixing seat 316 is provided with a sliding hole and multiple spring holes. A sliding rod 317 is laterally slidably connected inside the sliding hole. The other end of the sliding rod 317 is fixedly connected to a snap-fit ​​block 319. Multiple tension springs 318 are laterally fixedly connected between the inner surface of the snap-fit ​​block 319 and the spring holes. When the multiple tension springs 318 are not under force, a snap-fit ​​groove that matches the outer contour of the snap-fit ​​step block 314 is formed between the snap-fit ​​block 319 and the fixing seat 316.

[0022] In this embodiment, when installing the end cap structure, the shaft locking block 315 in the end cap structure is fitted onto the outer surface of the connecting shaft 313 inside the device groove 312 of one plate 31. Then, the other end of the end cap structure is pressed into the device groove 312 of another plate 31. During this process, the locking block 319 will separate from the fixing seat 316 until its teeth move to the recessed position of the locking step block 314. At this time, under the action of the tension spring 318, the locking block 319 resets and merges with the fixing seat 316, forming a locking groove that matches the outer contour of the locking step block 314, thus firmly fixing the other end of the end cap structure onto the plate 31. Since the other end is connected to the connecting shaft 313 through the semi-circular shaft locking block 315, the end cap structure can be stably installed between the two chain block mechanisms 3. When the cable inside the drag chain applies pressure to the end cap structure at the bend, it will not cause the end cap structure to be pushed out, further improving the structural stability of the device.

[0023] Furthermore, a partition plate 33 is detachably installed in the middle between the two end plate structures.

[0024] In this embodiment, the partition plate 33 is used to separate the cable structure in the cable chain.

[0025] Furthermore, multiple weight-reducing slots 36 are horizontally opened on the outer concave surfaces of both plates 31.

[0026] In this embodiment, the multiple weight-reducing slots 36 can achieve the effect of weight reduction, reduce the overall weight of the cable chain, and avoid the "collapse" phenomenon caused by excessive structural weight.

[0027] The working principle and usage process of this utility model: After the utility model is installed, multiple chain block mechanisms 3 are provided between the outer connector 1 and the inner connector 2. The multiple chain block mechanisms 3 are connected end to end. When two chain block mechanisms 3 are connected, the bushing body 34 of the outer concave surface of the two side cover structures of one chain block mechanism 3 will be installed in the shaft hole 37 opened on the inner concave surface of the two side cover structures of the other chain block mechanism 3, so that the two chain block mechanisms 3 can rotate relative to each other. At the same time, the two chain block mechanisms 3 connected to each other are connected by the first guide block 39, the second guide groove 38 and the second guide groove 39. The two guide blocks 311 and the first guide groove 35 form a double-ended guide and limiting structure, which makes the interconnected chain block mechanism 3 more stable in the horizontal direction and prevents it from easily "collapsed". This reduces the failure rate during processing and also improves the service life of the drag chain. A sound-absorbing plate 310 is also provided on the first guide block 39. Its overall shape is C-shaped and it has elastic protrusions on both the top and bottom, which correspond to the arc-shaped expansion groove. When the interconnected chain block mechanism 3 bends, the sound-absorbing plate 310 can buffer the movement and reduce mechanical vibration, thereby reducing noise.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A silent cable chain, characterized in that: It includes an outer connector (1), an inner connector (2), and multiple chain block mechanisms (3) disposed between the outer connector (1) and the inner connector (2); the multiple chain block mechanisms (3) have the same structure, one of the chain block mechanisms (3) includes two mutually symmetrical side cover structures, and an end cover structure is detachably installed above and below the two side cover structures; the two side cover structures have the same structure, one of the side cover structures includes a plate (31) with a semi-circular rectangular outer contour, the inner and outer surfaces of the two ends of the plate (31) respectively extend inward to the centerline of its thickness direction to form a circular outer concave surface and an inner concave surface with an outer diameter the same as the diameter of its semi-circular contour, and a bushing is fixedly connected to the middle of the outer concave surface. (34) A shaft hole (37) corresponding to the bushing body (34) is opened transversely through the middle of the inner concave surface. A first guide block (39) is fixedly connected to the inner end of the outer surface of the outer concave surface. A sound-absorbing plate (310) is detachably installed on the first guide block (39). A second guide block (311) is fixedly connected to the inner end of the inner surface of the inner concave surface. A semi-arc first guide groove (35) and a second guide groove (38) corresponding to the second guide block (311) and the first guide block (39) are respectively opened at the outer end of the outer surface of the outer concave surface and the outer end of the inner surface of the inner concave surface. The inner end of the second guide groove (38) is expanded outward to form an arc-shaped expansion groove adapted to the sound-absorbing plate (310).

2. The silent cable chain as described in claim 1, characterized in that: The upper and lower surfaces of the two plates (31) are provided with device slots (312), and the two device slots (312) on the same plate (31) are respectively fixedly connected with connecting shafts (313) and snap-fit ​​ladder blocks (314).

3. A silent cable chain as described in claim 2, characterized in that: The connecting shaft (313) and the snap-fit ​​ladder block (314) on the two plates (31) are arranged in opposite directions to each other.

4. A silent cable chain as described in claim 2, characterized in that: Both end cap structures are identical. One end cap structure includes a horizontal plate (32). One end of the horizontal plate (32) is fixedly connected to a semi-annular shaft clamp (315) corresponding to the connecting shaft (313). The other end of the horizontal plate (32) is fixedly connected to an L-shaped fixing seat (316). The outer end of the fixing seat (316) is provided with a sliding hole and multiple spring holes. A sliding rod (317) is laterally slidably connected inside the sliding hole. The other end of the sliding rod (317) is fixedly connected to a snap-fit ​​block (319). Multiple tension springs (318) are laterally fixedly connected between the inner surface of the snap-fit ​​block (319) and the spring holes. When the multiple tension springs (318) are not under force, a slot is formed between the snap-fit ​​block (319) and the fixing seat (316) that matches the outer contour of the snap-fit ​​step block (314).

5. A silent cable chain as described in claim 4, characterized in that: A partition plate (33) is detachably installed in the middle between the two end cap structures.

6. A silent cable chain as described in claim 1, characterized in that: Multiple weight-reducing slots (36) are transversely opened on the outer surface of the outer concave surface of the two plates (31).

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