Tap water pipe walking chain and device

Abstract

The utility model belongs to the technical field of running water pipe walking devices, and particularly relates to a running water pipe walking chain and device. A running chain for a tap water pipe comprises a plurality of inner chain links and outer chain links which are alternately connected, and the adjacent inner chain links and outer chain links are hinged through pin shafts I; wherein at least part of the outer chain links are driving chain links, each driving chain link comprises connecting pieces which are symmetrically arranged on the two sides, and a soft chain shoe is detachably installed between the connecting pieces on the two sides. According to the utility model, the negative influence of water film effect on friction force is effectively overcome, the traction stability of a driving system in a wet and silt environment is obviously improved, and the problem of slipping failure of a traditional belt is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the running device technical field of water pipe, specifically a water pipe running chain and device. BACKGROUND

[0002] In the field of water pipe maintenance and detection, the driving technology of the running device directly affects the stability and reliability of the equipment in the complex pipe environment. The existing driving scheme generally faces technical bottlenecks such as poor environmental adaptability, insufficient power and high maintenance cost, which are specifically manifested as:

[0003] ‌1. Environmental sensitivity and service life of belt drive‌

[0004] The rubber belt relies on friction force for driving, but in the water pipe, the friction coefficient can be reduced by 40%-60% due to the water film effect, which can cause slipping failure. Experimental data shows that when the water flow rate in the pipe is more than 0.5m / s, the belt traction force attenuation rate can be more than 50%. In addition, the chlorine ion (concentration ≥0.3mg / L) in the water can accelerate the aging of the rubber, causing the tensile strength of the belt to decrease every 200 hours of operation, and the belt needs to be replaced frequently (average maintenance period ≤3 months), which significantly increases the operation and maintenance cost.

[0005] ‌2. Contact area and geometric adaptability limitations of wheel drive‌

[0006] The traditional wheel structure is insufficient in contact area (single wheel effective contact arc length <15mm) under climbing or curved working conditions, which causes uneven distribution of traction force. When the pipe slope is more than 15°, the wheel-rail normal pressure decreases by 35%-40%, and the actual measured traction force output value is only 62% of that of the flat pipe.

[0007] Under the condition that the main water supply pipe cannot be stopped, the specific entrance space into the main water supply pipe is narrow, which is also a fatal obstacle for the traditional wheel structure.

[0008] ‌3. Power and fluid adaptability problems of propeller propulsion system‌

[0009] Some underwater robots use the driving principle of ship propellers to generate thrust force by rotating blades. However, such structures have significant problems in closed pipes:

[0010] ‌Low power efficiency‌: the propeller thrust needs to overcome the resistance of the reverse water flow in the pipe, when the water flow rate is ≥0.3m / s, the thrust loss rate is more than 60%, which causes the reverse travel speed to decrease to below 0.1m / s‌;

[0011] ‌Fluid disturbance interference‌: high-speed rotating blades can disturb the sediment at the bottom of the pipe, which seriously interferes with the accuracy of optical detection equipment.

[0012] The above technical bottle problem causes the existing walking device to have insufficient reliability in a complex pipeline scene. Therefore, it is urgent to develop a new driving device with high traction and long service life. SUMMARY

[0013] The tap water pipe walking chain and device provided by the utility model solve the above problems.

[0014] The utility model adopts the following technical scheme: a tap water pipe walking chain comprises:

[0015] A plurality of alternating inner links and outer links are hingedly connected through a pin shaft I.

[0016] At least part of the outer links are driving links, and the driving link comprises two symmetrically arranged connecting plates, and a soft chain track shoe is detachably mounted between the two connecting plates.

[0017] In some embodiments, the remaining outer links are tine-shaped outer links, and a single tine or multiple tines are integrally formed on the tine-shaped outer links, and the top end of the single tine or multiple tines is higher than the surface of the soft chain track shoe.

[0018] In some embodiments, the number ratio of the soft chain track shoe driving link to the tine-shaped outer link is 1:1 to 3:1, and such a mixed assembly mode.

[0019] In some embodiments, the top end of the single tine is a slope, the top end of the single tine is higher than or level with the surface of the soft chain track shoe, and the width of the root is greater than the width of the top end.

[0020] In some embodiments, the driving surface of the soft chain track shoe is provided with a friction pattern.

[0021] A tap water pipe walking device comprises:

[0022] A crawler body, two groups of driving units are arranged on the two sides of the crawler body, and each group of driving units comprises:

[0023] A driving sprocket is installed at the front end of the crawler body through a bearing;

[0024] A driven sprocket is installed at the rear end of the crawler body through a bearing;

[0025] A closed loop chain is meshed and sleeved between the driving sprocket and the driven sprocket, and the closed loop chain is the tap water pipe walking chain;

[0026] The driving sprocket and the output shaft of the motor are connected through a gear system or are directly connected, and the crawler body moves along the pipeline in the axial direction through the circulation of the chain.

[0027] In some embodiments, a lighting device is arranged on the crawler body.

[0028] In some embodiments, a camera device is provided on the crawler body.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. By using the soft chain shoe of the drive link to form a flexible contact with the inner wall of the pipe, combined with the micro-engagement effect of the friction texture, the negative impact of the water film effect on friction is effectively overcome, significantly improving the traction stability of the drive system in a humid environment and avoiding the problem of slippage failure of traditional belts.

[0031] 2. The alternating arrangement of soft chain shoe drive links and toothed drive links maintains the flexibility of the chain while the continuous friction drive of the soft chain shoe and the discrete gripping of the single toothed tooth form a synergistic effect, which not only ensures the smoothness of travel in straight pipe sections, but also enhances the ability to pass through complex pipe sections such as gravel, mud, bends and slopes.

[0032] 3. The soft chain shoe structure with detachable pin II connection enables quick and individual replacement of easily worn parts, avoiding the problem of the entire chain being scrapped due to partial damage in traditional integral chains, greatly reducing maintenance costs and extending the service life of the device.

[0033] 4. The single-tooth structure of the toothed drive chain link, through the geometric design of the beveled tip, forms a progressive embedded contact with the inner wall of the pipe, ensuring continuous and effective gripping under different pipe diameters and surface conditions.

[0034] 5. The chain-driven mechanism avoids the fluid disturbances caused by propeller propulsion. Combined with the integrated lighting and camera system within the crawler, it provides a stable optical environment for pipeline inspection, ensuring the accuracy and completeness of the inspection data.

[0035] 6. By driving the sprocket and the closed-loop chain, linear power output is achieved, forming a compact electromechanical integrated structure that meets the requirements for stable operation in narrow pipe spaces. Attached Figure Description

[0036] Figure 1 This is an exploded view of the chain structure in Example 1;

[0037] Figure 2 This is an exploded view of the chain structure in Example 2;

[0038] Figure 3 This is an installation diagram of the chain structure in Example 1;

[0039] Figure 4 This is an installation diagram of the chain structure in Example 2;

[0040] Figure 5This is a structural diagram of the water pipe traveling device in Example 2;

[0041] Figure 6 This is a structural diagram of the water pipe traveling device in Example 1;

[0042] Figure 7 A structural diagram of a multi-pointed tooth;

[0043] In the diagram, 1-inner link, 2-outer link, 2a-drive link, 2b-toothed outer link, 21-connecting piece, 22-single tooth, 23-multiple teeth, 3-pin I, 4-soft chain shoe, 5-friction pattern, 6-pin II, 7-crawler body, 701-drive sprocket, 702-driven sprocket, 703-closed-loop chain, 8-lighting device, 9-camera device. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0045] Example 1:

[0046] like Figure 1 , 3 As shown, a water pipe running chain includes:

[0047] Multiple alternating inner links 1 and outer links 2, with adjacent inner links 1 and outer links 2 hinged together by pin I3;

[0048] All outer links 2 are drive links 2a. Each drive link 2a includes connecting pieces 21 symmetrically arranged on both sides. A soft chain shoe 4 is detachably installed between the two connecting pieces 21 via a pin II6. The soft chain shoe 4 can be made of soft materials such as rubber or silicone.

[0049] The driving surface of the soft chain shoe 4 is provided with friction texture 5.

[0050] Specifically, the soft chain shoe 4 contacts the inside of the water pipe, which can generate greater friction, thereby ensuring greater propulsion. Furthermore, the contact area between the shoe and the bottom of the pipe is larger than that of the toothed outer chain link, thus enabling the mechanism equipped with the walking chain to move more stably inside the pipe.

[0051] like Figure 6 As shown, a water pipe traveling device includes:

[0052] The crawler body 7, and two sets of drive units on both sides of the crawler body 7, each set of drive units includes:

[0053] The drive sprocket 701 is mounted at the front end of the crawler body 1 via a bearing;

[0054] Driven sprocket 702 is mounted at the rear end of the crawler body 1 via a bearing;

[0055] A closed-loop chain 703 is meshed between the drive sprocket 701 and the driven sprocket 702. The closed-loop chain 703 is the water pipe walking chain.

[0056] The drive sprocket 701 is connected to the output shaft of the motor via a gear system or directly, and the crawler body 7 moves axially along the pipe through the cyclic rotation of the chain 703.

[0057] A lighting device 8 is installed on the crawler body 7. A camera device 9 is installed on the crawler body 6. The crawler body integrates an LED lighting module 8 and a high-definition camera module 9, supporting real-time image transmission.

[0058] Example 2:

[0059] As shown in Figures 2 and 4, a water pipe running chain includes:

[0060] Multiple alternating inner links 1 and outer links 2, with adjacent inner links 1 and outer links 2 hinged together by pin I3;

[0061] Some of the outer links 2 are drive links 2a. Each drive link 2a has a connecting piece 21 symmetrically arranged on both sides. A soft chain shoe 4 is detachably installed between the two connecting pieces 21 via a pin II6.

[0062] The remaining outer links are toothed outer links 2b, each with an integrally formed single tooth 22 or multiple teeth 23. The tips of the single tooth 22 or multiple teeth 23 are higher than or level with the surface of the flexible chain shoe 4. Specifically, the single tooth 22 or multiple teeth 23 can be arranged on both sides of the toothed outer link 2b, or only on one side. When only on one side, different toothed outer links 2b can be alternately arranged on the left and right sides.

[0063] The ratio of the number of soft chain shoe drive links 2a to the number of toothed outer links 2b is 1:1 or other values. The specific ratio needs to be adjusted regularly according to the specific conditions at the bottom of the pipe, and the links are arranged at intervals.

[0064] The tip of the single-pointed tooth 22 is an inclined plane, with the tip of the tooth tip protruding above or level with the surface of the soft chain shoe 4, and the width of the tooth root is greater than the width of the tooth tip.

[0065] The structure of multi-pointed tooth 23 is as follows Figure 7 As shown.

[0066] The driving surface of the soft chain shoe 4 is provided with friction texture 5.

[0067] like Figure 5 As shown, a water pipe traveling device includes:

[0068] The crawler body 7, and two sets of drive units on both sides of the crawler body 7, each set of drive units includes:

[0069] The drive sprocket 701 is mounted at the front end of the crawler body 1 via a bearing;

[0070] Driven sprocket 702 is mounted at the rear end of the crawler body 1 via a bearing;

[0071] A closed-loop chain 703 is meshed between the drive sprocket 101 and the driven sprocket 102. The closed-loop chain 703 is the water pipe walking chain.

[0072] The drive sprocket 701 is connected to the output shaft of the motor via a gear system or directly, and drives the crawler body 7 to move axially along the pipe through the cyclic rotation of the chain 703.

[0073] Example 2: This hybrid chain is suitable for pipes with relatively rough inner surfaces and a large number of large, granular solid objects, such as metal pipes, cement-covered surfaces, and other non-engineering plastics. The single-pointed tooth 22 or multi-pointed tooth 23 is slightly higher than the outer surface of the flexible chain shoe 4, allowing it to move using the friction between the flexible chain shoe 4 and the pipe wall. Furthermore, the single-pointed tooth 22 or multi-pointed tooth 23 can traverse larger, granular objects.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A water pipe walking chain, characterized in that, include: Multiple alternating inner links (1) and outer links (2), adjacent inner links (1) and outer links (2) are hinged by pin I (3); At least part of the outer link (2) is a drive link (2a), and the drive link (2a) includes connecting pieces (21) symmetrically arranged on both sides, and a soft chain shoe (4) is detachably installed between the connecting pieces (21) on both sides.

2. The water pipe walking chain according to claim 1, characterized in that, The remaining outer links are toothed outer links (2b), and the toothed outer links (2b) are provided with an integrally formed single tooth (22) or multiple teeth (23), and the top of the single tooth (22) or multiple teeth (23) protrudes above the surface of the soft chain shoe (4).

3. The water pipe walking chain according to claim 2, characterized in that, The ratio of the number of soft chain shoe drive links (2a) to toothed outer links (2b) is 1:1 to 3:1, and this is a hybrid assembly mode.

4. The water pipe walking chain according to claim 2 or 3, characterized in that, The tip of the single-pointed tooth (22) is an inclined plane, and the tip of the tooth is higher than or level with the surface of the soft chain shoe (4). The width of the tooth root is greater than the width of the tooth tip.

5. The water pipe walking chain according to claim 4, characterized in that, The driving surface of the soft chain shoe (4) is provided with friction texture (5).

6. A water pipe traveling device, characterized in that, include: The crawler body (7) has two sets of drive units on both sides of the crawler body (7), each set of drive units including: The drive sprocket (701) is mounted on the front end of the crawler body (7) via a bearing; The driven sprocket (702) is mounted at the rear end of the crawler body (7) via a bearing; A closed-loop chain (703) is meshed between the drive sprocket (701) and the driven sprocket (702), wherein the closed-loop chain (703) is a water pipe walking chain as described in any one of claims 1-5; The drive sprocket (701) is connected to the output shaft of the motor via a gear system or directly connected to it. The cyclic rotation of the chain (703) drives the crawler body (7) to move axially along the pipe.

7. The water pipe traveling device according to claim 6, characterized in that, A lighting device (8) is provided on the crawler body (7).

8. The water pipe traveling device according to claim 7, characterized in that, A camera device (9) is installed on the crawler body (7).

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