Long-distance rope threading tool and rope threading method for drainage pipes

Abstract

The present invention provides a long-distance rope threading tool and method for drainpipes. The long-distance rope threading tool comprises a main pole, with an umbrella-shaped force-applying mechanism at one end of the main pole and the other end connected to a traction rope. The umbrella-shaped force-applying mechanism comprises a plurality of ribs connected to the main pole via a support pole. The outer sides of the ribs cover the umbrella canopy, and the rear ends of the ribs are connected to the main pole via a connecting rope. The tool and rope threading method can achieve long-distance rope threading in sewage pipes with high efficiency and low cost.

Description

Technical Field

[0001] This invention relates to the field of municipal engineering, and in particular to a long-distance rope threading tool and method for drainage pipes. Background Technology

[0002] During municipal construction, it is sometimes necessary to thread cables through sewage pipes according to construction requirements. For short-distance pipe cable threading, methods such as towing with CCTV robots, all-terrain robots, or powered sonar robots can be used, or a cable threading pole can be used to push the cable in. For example, CN201535416U discloses a driven pipe cable threading machine, which moves through the pipe to thread the cable.

[0003] However, due to site conditions or other reasons during construction, many urban sewage pipelines have sections without inspection wells for extended periods. While this can be addressed within 300 meters by constructing at both ends, for longer sections without inspection wells, even with CCTV robots, all-terrain robots, or powered sonar robots working from both ends, it's difficult to complete the inspection. This is especially true for pipelines operating at high water levels, which inevitably develop serious defects or siltation after prolonged operation. While adding inspection wells can solve the problem for some pipelines, certain sections cannot, such as river crossings or other environmentally restricted sections, where rope threading is extremely difficult. This poses significant challenges to maintenance and repair work. If rope threading can be completed in these sections, dredging, inspection, and even repair work can be assisted by the rope's traction. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a long-distance rope threading tool and method for drainage pipes, which can realize the rope threading work of long-distance sewage pipes with high efficiency and low cost.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a long-distance rope threading tool for drainage pipes, including a main pole, an umbrella-shaped force-applying mechanism at one end of the main pole, and a traction rope at the other end. The umbrella-shaped force-applying mechanism includes several umbrella ribs, which are connected to the main pole through a support rod. The umbrella ribs are covered with an umbrella surface on their outer side, and the tail ends of the umbrella ribs are connected to the main pole through a connecting rope.

[0006] In a preferred embodiment, the main rod is provided with two sets of protruding rings, and the connecting end of the connecting rope is arranged around the two sets of protruding rings.

[0007] In a preferred embodiment, the canopy includes a main canopy and an extension wing that are connected to each other, and the ribs include a main rib and an extension rib. The main rib and the extension rib are rigidly connected. The main rib is located inside the main canopy, and the extension rib is located inside the extension wing. The extension rib can be elastically bent and deformed.

[0008] In a preferred embodiment, the main rod is provided with a sliding cylinder that slides along the main rod. One end of the support rod is hinged to the sliding cylinder, and the other end is hinged to the umbrella rib. The end of the umbrella rib is hinged to the main rod. The main rod is a hollow rod, and the side wall of the main rod is provided with an installation hole for a limiting spring buckle to pass through. The limiting spring buckle restricts the downward movement of the sliding cylinder.

[0009] In a preferred embodiment, the spring clip includes an elastic piece disposed within the main rod, and a limiting block is provided on one side of the elastic piece, with the limiting block corresponding to the mounting hole.

[0010] In a preferred embodiment, the outer side of the limiting block is provided with a sliding inclined surface, which slopes from top to bottom toward the main rod.

[0011] In a preferred embodiment, a limiting ring is provided at the upper end of the main rod, which limits the movement of the sliding cylinder.

[0012] The present invention also provides a method for threading a rope for a long-distance rope threading tool for drainage pipes, comprising the following steps:

[0013] S1. Select a long-distance rope threading tool of the appropriate size according to the diameter of the pipe to be threaded and the siltation of the pipe, and select the length of the traction rope according to the length of the pipe to be threaded.

[0014] S2. Coordinate with upstream and downstream pumping stations or sewage treatment plants to shut down pumps, so that the pipe section to be laid and the sewage within a certain range upstream and downstream are in a static or slow-flowing state.

[0015] S3. The diver sends the long-distance rope-threading tool to the inspection well on the upstream side of the pipe section to be threaded, and then sends the long-distance rope-threading tool to the pipe opening of the pipe section to be threaded.

[0016] S4. Coordinate the start of pumps at upstream and downstream pumping stations or sewage treatment plants. The water flow pushes the umbrella-shaped force-applying mechanism to move downstream. The umbrella-shaped force-applying mechanism drags the traction rope. After the umbrella-shaped force-applying mechanism reaches the downstream inspection well, take out the long-distance rope-threading tool.

[0017] S5. Connect one end of the rope to be used in the construction to the end of the traction rope, pull the starting end of the traction rope, and drag the rope to be used in the construction to pass through the section of the conduit to be threaded, thus completing the threading of the rope.

[0018] In a preferred embodiment, in step S4, a long rod with a hook is used to retrieve the long-distance rope-threading tool, or a diver is arranged to retrieve the long-distance rope-threading tool.

[0019] In the preferred embodiment, in step S3, the sliding cylinder slides upward, squeezing the limiting spring buckle. After the sliding cylinder moves to the upper side of the limiting spring buckle, the limiting spring buckle resets to limit the sliding cylinder, the umbrella opens, and the long-distance rope threading tool is then sent to the pipe opening of the pipe section to be threaded. In step S4, the upstream and downstream pumping stations or sewage treatment plants are coordinated to start pumps, and the water flow causes the umbrella to open further. The sliding cylinder moves to the position of the limiting ring, and the umbrella cannot continue to open. When passing through a pipe section where the actual water flow cross-section is significantly reduced, the sliding cylinder moves towards the limiting spring buckle, and the main umbrella and the extension wings retract accordingly, reducing the cross-sectional size of the umbrella-shaped force-applying mechanism to ensure that the long-distance rope threading tool passes smoothly.

[0020] This invention provides a long-distance rope threading tool and method for drainage pipes. It utilizes the impact force of the water flowing in the pipe to apply force to an umbrella-shaped force-applying mechanism, causing it to move along the pipe. First, the traction rope is threaded, and then the construction rope is dragged by the traction rope to complete the threading. This method enables long-distance rope threading of sewage pipes, which is highly efficient, low-cost, simple to operate, and has minimal safety hazards. After threading, it is beneficial for subsequent auxiliary work such as dredging, inspection, and even repair of the sewage pipe. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is the left view of the present invention;

[0024] Figure 3 A schematic diagram of the long-distance rope-threading tool during retraction;

[0025] Figure 4 A schematic diagram of the umbrella ribs;

[0026] Figure 5 This is a schematic diagram of the support rod installation.

[0027] Figure 6 This is a schematic diagram of the limit spring buckle.

[0028] Figure 7 This is a schematic diagram of the rope-threading process of the present invention;

[0029] In the diagram: 1. Main pole; 2. Towing rope; 3. Umbrella ribs; 4. Support rod; 5. Umbrella canopy; 6. Connecting rope; 7. Sliding cylinder; 8. Limiting spring buckle; 9. Limiting ring; 101. Protruding ring; 102. Mounting hole; 301. Main umbrella ribs; 302. Extension umbrella ribs; 501. Main umbrella canopy; 502. Extension wing; 801. Elastic plate; 802. Limiting block; 803. Sliding ramp. Detailed Implementation

[0030] Example 1: Figures 1-3 As shown, a long-distance rope threading tool for drainage pipes includes a main pole 1. The end of the main pole 1 is provided with an umbrella-shaped force-applying mechanism, and the other end is connected to a traction rope 2. The traction rope 2 is made of lightweight rope. The umbrella-shaped force-applying mechanism includes several umbrella ribs 3. The umbrella ribs 3 are connected to the main pole 1 through a support rod 4. The umbrella ribs 3 are covered with an umbrella surface 5. The tail end of the umbrella ribs 3 is connected to the main pole 1 through a connecting rope 6.

[0031] The umbrella-shaped force-applying mechanism constitutes the main force-bearing part of the entire tool. Under the action of water flow, it can move along the pipeline to achieve automatic rope threading. The tail end of the umbrella rib 3 is connected to the main pole 1 through the connecting rope 6 to prevent the umbrella rib 3 from deforming, breaking, or being damaged under the impact of water flow.

[0032] Preferred, such as Figure 2 and 4 As shown, the canopy 5 includes a main canopy 501 and an extension wing 502 connected to each other, and the ribs 3 include a main rib 301 and an extension rib 302. The main rib 301 and the extension rib 302 are rigidly connected. The main rib 301 is located inside the main canopy 501, and the extension rib 302 is located inside the extension wing 502. The extension rib 302 can be elastically bent and deformed.

[0033] The main umbrella rib 301 has high strength and rigidity, and is not easily bent or deformed, while the extension rib 302 has lower rigidity and is relatively thin. The main umbrella rib 301 and the extension rib 302 can be made as a single piece or as separate pieces.

[0034] When a split structure is selected, the extension rib 302 should be made of a softer material, such as plastic or a thinner steel strip, while the main rib 301 should be made of a harder material, such as steel bars or steel plates.

[0035] When an integrated structure is adopted, the thickness of the umbrella ribs 3 gradually decreases and the width gradually narrows from the main umbrella rib 301 to the extension umbrella rib 302, which can ensure that the main umbrella rib 301 has sufficient support and allow the extension umbrella rib 302 to undergo elastic deformation.

[0036] By setting up the extended umbrella rib 302 with a thin sheet structure, the extended umbrella rib 302 can be elastically bent and deformed under the action of water flow. When there is some silt, obstacles or deformation in the pipe, the extended umbrella rib 302 deforms, making the opening and closing degree of the umbrella-shaped force application mechanism smaller, so that the tool can pass through the pipe smoothly.

[0037] The canopy 5 includes a main canopy 501 and an extension wing 502. The main canopy 501 is made of a thicker material, while the extension wing 502 is made of a thinner material. Fabrics with high tensile and tear resistance can be used. Alternatively, the main canopy 501 and the extension wing 502 can be made of the same material and designed as a single unit.

[0038] By setting up the extended umbrella ribs 302 and the extended wings 502, the extended wings 502 can open under the action of water flow, making full use of the thrust of the water flow. When there is a lot of silt, obstacles or deformation in the pipe, the extended umbrella ribs 302 and the extended wings 502 deform, making the opening and closing degree of the umbrella-shaped force application mechanism smaller, so that the tool can pass through the pipe smoothly.

[0039] Preferably, the main rod 1 is provided with two sets of protruding rings 101, and the connecting end of the connecting rope 6 is arranged around the two sets of protruding rings 101.

[0040] By wrapping the end of the connecting rope 6 around the main pole 1, the end of the connecting rope 6 can move along the main pole 1 when the extension wing 502 deforms. By setting the protruding ring 101, the amount of deformation of the extension wing 502 can be controlled, so as to avoid the extension wing 502 from failing due to excessive deformation or causing the umbrella bone to break and be damaged.

[0041] A method for threading a rope for a long-distance rope threading tool for drainage pipes, such as... Figure 7 As shown, it includes the following steps:

[0042] S1. Based on the diameter of the pipe to be grouted and the approximate siltation level, select a long-distance grooving tool of appropriate size, and select a traction rope of appropriate length based on the length of the pipe section to be grouted.

[0043] S2. Coordinate with upstream and downstream pumping stations or sewage treatment plants to shut down pumps, so that the sewage in the pipeline section to be laid and within a certain range upstream and downstream is in a static or slow-flowing state.

[0044] S3. The diver sends the long-distance rope-threading tool to the inspection well on the upstream side of the pipe section to be threaded, and then sends the long-distance rope-threading tool to the pipe opening of the pipe section to be threaded.

[0045] S4. Coordinate with upstream and downstream pumping stations or sewage treatment plants to start pumps. Sewage will push the umbrella-shaped force-applying mechanism downstream. The umbrella-shaped force-applying mechanism will drag the traction rope 2. The approximate position of the umbrella-shaped force-applying mechanism can be determined by measuring the length of the traction rope 2 dragged into the pipeline. After the umbrella-shaped force-applying mechanism reaches the downstream inspection well, the long-distance rope-threading tool can be retrieved. Specifically, use a long pole with a hook to hook the traction rope 2 to retrieve the long-distance rope-threading tool, or arrange for a diver to retrieve the long-distance rope-threading tool, thereby pulling the starting end of the traction rope 2 out of the downstream inspection well.

[0046] S5. Connect one end of the rope to be used in the construction to the tail end of the traction rope 2, pull the starting end of the traction rope 2, and drag the rope to be used in the construction to pass through the section of the conduit to be threaded, thus completing the threading of the rope.

[0047] Other measures will be taken as needed for the specific work to be carried out, and relevant testing and repair work will be carried out based on the completed rope.

[0048] The umbrella-shaped force-applying mechanism is forced to move along the pipeline by utilizing the impact force of the water flowing in the pipeline. First, the traction rope is threaded through the pipeline, and then the construction rope is dragged by the traction rope to complete the rope threading. This method can be used for rope threading in long-distance sewage pipelines, which is efficient, low-cost, simple to operate, and has few safety hazards.

[0049] Example 2: Different from Example 1, such as Figures 5-6 As shown, the main rod 1 is provided with a sliding cylinder 7, which slides along the main rod 1. One end of the support rod 4 is hinged to the sliding cylinder 7, and the other end is hinged to the umbrella rib 3. The end of the umbrella rib 3 is hinged to the main rod 1. The main rod 1 is a hollow rod. The side wall of the main rod 1 is provided with an installation hole 102 for the limit spring buckle 8 to pass through. The limit spring buckle 8 restricts the sliding cylinder 7 from moving downward.

[0050] The spring buckle 8 includes an elastic piece 801 disposed inside the main rod 1. The elastic piece 801 has an arc-shaped structure. A limiting block 802 is provided on one side of the elastic piece 801, and the other side is connected to the inner wall of the main rod 1. The limiting block 802 is provided corresponding to the mounting hole 102.

[0051] The limiting block 802 has a sliding inclined surface 803 on its outer side, which is inclined from top to bottom toward the main rod 1.

[0052] The sliding cylinder 7 moves upward, pressing the sliding inclined surface 803. The limiting block 802 moves into the mounting hole 102, deforming the elastic piece 801. The limiting block 802 releases its obstruction of the sliding cylinder 7. After the sliding cylinder 7 moves to the upper side of the limiting block 802, the elastic piece 801 rebounds, and the limiting block 802 resets, limiting the sliding cylinder 7. The upward movement of the sliding cylinder 7 drives the support rod 4 to move upward, causing the umbrella rib 3 to open. The umbrella-shaped force application mechanism is in the open state, allowing for threading operations. Figure 1 As shown.

[0053] like Figure 3 As shown, when it is necessary to remove the long-distance rope-threading tool, press the limiting block 802. The limiting block 802 moves into the mounting hole 102, releasing the obstruction to the sliding cylinder 7. At the same time, the sliding cylinder 7 moves downward, realizing the retraction of the umbrella rib 3 and the umbrella surface 5.

[0054] Preferably, the upper end of the main rod 1 is provided with a limiting ring 9, which is located on the upper side of the spring buckle 8, and the limiting ring 9 limits the sliding cylinder 7.

[0055] When the sliding cylinder 7 moves to the upper side of the limiting block 802, the limiting ring 9 limits the sliding cylinder 7 during the threading process, controlling the opening angle of the umbrella ribs 3 and the umbrella surface 5.

[0056] A method for threading a long-distance rope through a drainage pipe includes the following steps:

[0057] S1. Based on the diameter of the pipe to be grouted and the approximate siltation level, select a long-distance grooving tool of appropriate size, and select a traction rope of appropriate length based on the length of the pipe section to be grouted.

[0058] S2. Coordinate with upstream and downstream pumping stations or sewage treatment plants to shut down pumps, so that the sewage in the pipeline section to be laid and within a certain range upstream and downstream is in a static or slow-flowing state.

[0059] S3. The diver delivers the long-distance rope-threading tool to the inspection well upstream of the pipe section to be threaded, and then to the pipe opening of the pipe section. After the umbrella-shaped force-applying mechanism is connected to the main rod 1 via the connecting rope 6, the sliding cylinder 7 slides upward, squeezing the limiting spring buckle 8. After the sliding cylinder 7 moves to the upper side of the limiting spring buckle 8, the limiting spring buckle 8 resets to limit the sliding cylinder 7, the umbrella surface 5 opens, and then the long-distance rope-threading tool is delivered to the pipe opening of the pipe section to be threaded.

[0060] S4. Coordinate the start of pumps at upstream and downstream pumping stations or sewage treatment plants. The water flow pushes the umbrella-shaped force-applying mechanism downstream. The water flow causes the umbrella surface 5 to open further. The sliding cylinder 7 moves to the position of the limiting ring 9. The umbrella surface 5 can no longer open. When passing through a pipe section where the actual water flow cross-section is significantly reduced, the sliding cylinder 7 moves towards the limiting spring buckle 8. The main umbrella surface 501 and the extension wing 502 retract accordingly, reducing the cross-sectional size of the umbrella-shaped force-applying mechanism to ensure that the long-distance rope threading tool can pass smoothly.

[0061] The umbrella-shaped force-applying mechanism drags the traction rope 2. The approximate location of the umbrella-shaped force-applying mechanism is determined by measuring the length of the traction rope 2 dragged into the pipeline. Once the umbrella-shaped force-applying mechanism reaches the downstream inspection well, the long-distance rope-threading tool is retrieved. Specifically, a pull ring can be installed on the outer side of the junction of the main rod 1 and the umbrella surface 5. A long rod with a hook can be used to hook the pull ring to retrieve the long-distance rope-threading tool, or a diver can be arranged to retrieve the long-distance rope-threading tool, thereby pulling the starting end of the traction rope 2 out from the downstream inspection well.

[0062] S5. Connect one end of the rope to be used in the construction to the tail end of the traction rope 2, pull the starting end of the traction rope 2, and drag the rope to be used in the construction to pass through the section of the conduit to be threaded, thus completing the threading of the rope.

Claims

1. A method for threading a rope for a long-distance rope threading tool in drainage pipes, characterized in that, A long-distance rope threading tool for drainage pipes is used for threading the rope. The long-distance rope threading tool for drainage pipes includes a main pole (1). The end of the main pole (1) is provided with an umbrella-shaped force-applying mechanism, and the other end is connected to a traction rope (2). The umbrella-shaped force-applying mechanism includes several umbrella ribs (3). The umbrella ribs (3) are connected to the main pole (1) through a support rod (4). The umbrella ribs (3) are covered with an umbrella surface (5). The tail end of the umbrella ribs (3) is connected to the main pole (1) through a connecting rope (6). The umbrella surface (5) includes a main umbrella surface (501) and an extension wing (502) that are connected to each other. The umbrella ribs (3) include a main umbrella rib (301) and an extension umbrella rib (302). The main umbrella rib (301) and the extension wing (502) are connected to each other. The extension ribs (302) are rigidly connected. The main ribs (301) are located inside the main canopy (501). The extension ribs (302) are located inside the extension wings (502). The extension ribs (302) can be elastically bent and deformed. The main rod (1) is provided with a sliding cylinder (7). The sliding cylinder (7) slides along the main rod (1). One end of the support rod (4) is hinged to the sliding cylinder (7), and the other end is hinged to the ribs (3). The end of the ribs (3) is hinged to the main rod (1). The main rod (1) is a hollow rod. The side wall of the main rod (1) is provided with an installation hole (102) through which the limiting spring buckle (8) passes. The limiting spring buckle (8) restricts the sliding cylinder (7) from moving downward. The steps include: S1. Select a long-distance rope threading tool of the appropriate size according to the diameter of the pipe to be threaded and the siltation of the pipe, and select the length of the traction rope according to the length of the pipe to be threaded. S2. Coordinate with upstream and downstream pumping stations or sewage treatment plants to shut down pumps, so that the pipe section to be laid and the sewage within a certain range upstream and downstream are in a static or slow-flowing state. S3. The diver sends the long-distance rope-threading tool for the drainage pipe to the inspection well on the upstream side of the pipe section to be threaded. The sliding cylinder (7) slides upward and squeezes the limiting spring buckle (8). After the sliding cylinder (7) moves to the upper side of the limiting spring buckle (8), the limiting spring buckle (8) resets to limit the sliding cylinder (7). The umbrella (5) opens and sends the long-distance rope-threading tool to the pipe opening of the pipe section to be threaded. S4. Coordinate the start of pumps at upstream and downstream pumping stations or sewage treatment plants. The water flow pushes the umbrella-shaped force application mechanism to move downstream. The umbrella-shaped force application mechanism drags the traction rope (2). The water flow causes the umbrella surface (5) to open further. The sliding cylinder (7) moves to the position of the limiting ring (9). The umbrella surface (5) cannot continue to open. When passing through a pipe section where the actual water flow cross-section is significantly reduced, the sliding cylinder (7) moves towards the limiting spring buckle (8). The main umbrella surface (501) and the extension wing (502) retract accordingly, reducing the cross-sectional size of the umbrella-shaped force application mechanism to ensure that the long-distance rope threading tool passes smoothly. After the umbrella-shaped force application mechanism reaches the downstream inspection well, the long-distance rope threading tool is taken out. S5. Connect one end of the rope to be used in construction to the tail end of the traction rope (2), pull the starting end of the traction rope (2), and drag the rope to be used in construction through the section of the conduit to be threaded to complete the threading.

2. The rope-threading method for a long-distance rope-threading tool for drainage pipes according to claim 1, characterized in that, The main rod (1) is provided with two sets of protruding rings (101), and the connecting end of the connecting rope (6) is arranged around the two sets of protruding rings (101).

3. The rope-threading method for a long-distance rope-threading tool for drainage pipes according to claim 1, characterized in that, The spring buckle (8) includes an elastic piece (801) disposed in the main rod (1), and a limiting block (802) is provided on one side of the elastic piece (801), with the limiting block (802) corresponding to the mounting hole (102).

4. The rope-threading method for a long-distance rope-threading tool for drainage pipes according to claim 3, characterized in that, The limiting block (802) has a sliding inclined surface (803) on its outer side, and the sliding inclined surface (803) is inclined from top to bottom towards the main rod (1).

5. The rope-threading method for a long-distance rope-threading tool for drainage pipes according to claim 1, characterized in that, The upper end of the main rod (1) is provided with a limiting ring (9), which limits the sliding cylinder (7).

6. The rope-threading method for a long-distance rope-threading tool for drainage pipes according to claim 1, characterized in that, In step S4, a long rod with a hook is used to hook the long-distance rope-threading tool to retrieve it, or a diver is arranged to retrieve the long-distance rope-threading tool.

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