Pipe jacking sheath and preparation method thereof
By using a variety of reinforcement materials for inner concrete and outer layer in the top tube sheath, the problem of difficult process control and easy cracks in the top tube production is solved, and the durability, aesthetics and production efficiency of the sheath are achieved Improvement.
Patent Information
- Application Number
- CN202411574663.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-02-18
AI Technical Summary
The process is difficult to control during the pipe hoisting process and is prone to cracks, resulting in extremely poor customer experience.
The top tube sheath design includes inner concrete and outer reinforcement materials, specifically reinforcing materials such as release film, hot melt material, cold wrap belt and non-woven fabric, and is reinforced through rotary adhesion and compression processes.
It effectively avoids the crack defects of putty layer in traditional top tube sheath, enhances the durability and aesthetics of the sheath, reduces labor and material costs, and shortens the production cycle.
Smart Images
Figure CN119467862A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of jacking pipe manufacturing, and in particular to a jacking pipe jacket and a preparation method thereof. Background Art
[0002] The core quality of the jacking pipe product is the jacking force that the flange ribs and the pipe body can withstand. The jacket plays a role in outer diameter consistency, preventing objects from getting stuck in the lower side of the flange during the jacking process, causing the pipeline jacking failure. At the same time, it cooperates with the grouting of the outer surface grouting holes to play a lubricating role. The outer jacket of the jacking pipe consists of three layers, of which the bottom is a concrete layer, the middle is a putty layer (epoxy resin + cement mixture), and the outside is a final finishing layer (hcpe paint). The comprehensive curing time of the jacking pipe after the concrete is poured is 13 hours. After the pipe is pulled out, putty (epoxy resin + cement mixture) is used to scrape the entire pipe body, and the surface honeycomb surface is repaired to make it smooth and beautiful. Finally, after the putty layer is dry, the final finishing layer (hcpe paint) is brushed on the entire body.
[0003] Due to the heavy weight after pouring, the pipe body undergoes elastic deformation during hoisting. After being lowered, the internal pipe blank recovers its deformation, but the external concrete cannot recover its deformation, resulting in cracks. The concrete curing time is insufficient (the normal curing time is 28 days), and the curing curve is difficult to control, resulting in shrinkage cracks. The water vapor in the concrete evaporates, and the putty layer and the final finishing layer lock in moisture. The water vapor evaporates outward, causing the putty layer to crack, resulting in cracks. The distance between the steel mesh and the pipe body, the degree of compliance of the concrete raw materials, and the inadequate pouring and vibration process can all cause cracks. There are many process links that cause cracks in the production process of jacking pipes, and they are difficult to control. All jacking pipe manufacturers have the same problem, which is difficult to solve and gives customers a very poor experience.
[0004] Based on this, how to solve the cracks in the jacking pipe jacket is a common issue that needs to be solved urgently in the industry. Summary of the invention
[0005] The purpose of the present invention is to solve the problem that the process is difficult to control and cracks are easily generated during the production of jacking pipes, and to provide a jacking pipe jacket and a preparation method thereof.
[0006] In order to achieve the above-mentioned objectives, in a first aspect, the present invention provides a jacking pipe jacket, which includes an inner layer and an outer layer; wherein the inner layer is cast on the jacking pipe body with concrete; the outer layer is reinforced with a reinforcing material; the reinforcing material is selected from one or two or more of a release film, a hot-melt material, a cold wrap tape and a non-woven fabric.
[0007] Preferably, the hot-melt material is PE material.
[0008] In a second aspect, the present invention provides a method for preparing a jacking pipe jacket, the preparation method comprising: firstly pouring the jacking pipe with concrete, performing comprehensive curing and polishing, and then reinforcing the pipe body with reinforcing materials.
[0009] Preferably, the reinforcing material is selected from one or two or more of a release film, a hot-melt material, a cold wrap tape and a non-woven fabric.
[0010] Preferably, the hot-melt material is PE material.
[0011] Preferably, when the reinforcing material is a release film, the reinforcement conditions include: covering the tube body with the release film, pressing the edges, rotating the release film to attach it to the tube body, pressing it tightly, and closing the edges of the socket.
[0012] Preferably, the conditions for the rotational attachment include: making the release film and the tube body inclined at an angle of 15°, and using a tugwheel to rotate at a constant speed.
[0013] More preferably, the edge finishing conditions include: using a cutter to cut the release film in a circumferential direction along the socket, and using the release film to positively fit the socket and the plug, and pressing them tightly.
[0014] Further preferably, the release film meets the following conditions: having an adhesive backing and a width of 600-1000 mm.
[0015] More preferably, the edge pressing conditions include: a width of 10-50 mm.
[0016] More preferably, the membrane release ring satisfies the condition that the width is 100 mm.
[0017] Preferably, when the reinforcement material is a hot-melt material, the reinforcement conditions include: preheating the pipe body, starting the rollers, performing hot-melt extrusion molding using the hot-melt material; processing the socket and allowing to stand.
[0018] Preferably, the preheating conditions include: using a heating plate for preheating for 15-20 minutes.
[0019] More preferably, the travel speed of the roller is 3 minutes per meter.
[0020] Further preferably, the socket processing method is to directly wrap the hot-melt material.
[0021] More preferably, the standing condition includes: a time of 15-20 minutes.
[0022] Preferably, when the reinforcement material is a cold wrap, the reinforcement conditions include: covering the pipe body with the cold wrap and placing it on rollers, starting the rollers, tightening the cold wrap, pressing the edges, wrapping the cold wrap at a uniform speed and at an angle of 15°, and closing the edges of the socket.
[0023] Preferably, the conditions for finishing the edge include: using a cutter to cut the cold wrap tape circumferentially along the socket, using glue to positively fit the cold wrap tape to the socket and the plug, and pressing them tightly.
[0024] More preferably, the cold wrapping tape satisfies the following conditions: thickness is 1.2 mm and width is 200 mm.
[0025] Further preferably, the edge pressing conditions include: a width of 30-50 mm.
[0026] Preferably, when the reinforcement material is a non-woven fabric, the reinforcement conditions include: rotating the non-woven fabric to attach it to the pipe body, pressing it tightly, and closing the socket.
[0027] Preferably, the non-woven fabric has the following conditions: it has adhesive backing and a unit mass of 70 g / m 2 , width is 600-1000mm.
[0028] More preferably, the conditions for the rotational attachment include: making the non-woven fabric and the tube body inclined at an angle of 15°, and using a tugwheel to rotate at a constant speed.
[0029] Further preferably, the conditions for finishing the edge include: using a cutter to cut the non-woven fabric in a circumferential direction along the socket, using a non-woven fabric ring to positively fit the socket and the plug, and pressing them tightly.
[0030] More preferably, the non-woven fabric ring meets the condition that the width is 100 mm.
[0031] In a third aspect, the present invention provides a jacking pipe jacket prepared by the preparation method described in the second aspect.
[0032] Through the above technical scheme, the jacking pipe jacket of the present invention uses a variety of reinforcement materials and processing techniques such as release film, hot-melt material, cold wrap tape and non-woven fabric, which provides more choices for the production of jacking pipe jackets, and eliminates the puttying process and mark spraying process in the traditional jacking pipe jacket production method, effectively avoiding the crack defects of the putty layer in the traditional jacking pipe jacket and covering the pouring defects of the concrete, so that the jacking pipe jacket is durable and beautiful, and not easy to fall off the jacking pipe, thereby reducing labor costs and related material costs.
[0033] Moreover, since the traditional production method of the jacking pipe jacket needs to spend 4-6 hours waiting for the putty layer to dry before proceeding to the subsequent steps, the jacking pipe jacket of the present invention does not require waiting, thus shortening the production cycle, improving production efficiency, and can be mechanized and automated in the later stage, which is suitable for large-scale production and is conducive to large-scale utilization and promotion.
[0034] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0035] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:
[0036] Figure 1 This is a physical picture of the release film sheathed jacking pipe of the present invention;
[0037] Figure 2 A physical picture of the hot-melt material sheathed jacking pipe of the present invention;
[0038] Figure 3 This is a physical picture of the cold-wrapped jacket jacking pipe of the present invention;
[0039] Figure 4 This is a physical picture of the non-woven fabric sheath jacking pipe of the present invention;
[0040] Figure 5 This is the actual picture of the top tube blank;
[0041] Figure 6 This is a physical picture of the concrete layer after the traditional jacking jacket is poured;
[0042] Figure 7 This is a physical picture of the putty layer of the traditional jacking pipe sheath;
[0043] Figure 8 This is a physical picture of the final finishing layer of the traditional jacking jacket;
[0044] Fig. 9 This is a real picture of the traditional jacking pipe casing cracking due to long-term storage. DETAILED DESCRIPTION
[0045] The specific embodiments of the present invention are described in detail below. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.
[0046] In a first aspect, the present invention provides a jacking pipe jacket, comprising an inner layer and an outer layer; wherein the inner layer is cast using concrete for the jacking pipe body; the outer layer is reinforced using a reinforcing material; the reinforcing material is selected from one or two or more of a release film, a hot-melt material, a cold wrap tape and a non-woven fabric.
[0047] The jacking pipe jacket of the present invention uses a variety of reinforcement materials and processing techniques such as release film, hot-melt material, cold wrap tape and non-woven fabric, which provides more choices for the production of jacking pipe jackets and eliminates the puttying process and mark spraying process in the traditional jacking pipe jacket production method, effectively avoiding the crack defects of the putty layer in the traditional jacking pipe jacket and covering the pouring defects of the concrete, so that the jacking pipe jacket is durable and beautiful, and not easy to fall off the jacking pipe, thereby reducing labor costs and related material costs.
[0048] Moreover, since the traditional production method of the jacking pipe jacket needs to spend 4-6 hours waiting for the putty layer to dry before proceeding to the subsequent steps, the jacking pipe jacket of the present invention does not require waiting, thus shortening the production cycle, improving production efficiency, and can be mechanized and automated in the later stage, which is suitable for large-scale production and is conducive to large-scale utilization and promotion.
[0049] In a preferred embodiment of the present invention, the hot-melt material is PE material.
[0050] In a second aspect, the present invention provides a method for preparing a jacking pipe jacket, the preparation method comprising: firstly pouring the jacking pipe with concrete, performing comprehensive curing and polishing, and then reinforcing the pipe body with reinforcing materials.
[0051] The preparation method of the jacking pipe jacket of the present invention eliminates the puttying process and the mark spraying process in the traditional jacking pipe jacket production method, effectively avoids the crack defects of the putty layer in the traditional jacking pipe jacket, and blocks the pouring defects of the concrete, so that the jacking pipe jacket is durable and beautiful and not easy to fall off the jacking pipe, thereby reducing labor costs and related material costs, shortening the production cycle, and improving production efficiency. It can be mechanized and automated in the later stage, which is suitable for large-scale production and is conducive to large-scale utilization and promotion.
[0052] In a preferred embodiment of the present invention, in order to meet the requirements of different scenarios of the top pipe jacket, the reinforcement material is selected from one or two or more of a release film, a hot melt material, a cold wrap tape and a non-woven fabric.
[0053] In a preferred embodiment of the present invention, the hot-melt material is PE material.
[0054] In a preferred embodiment of the present invention, when the reinforcing material is a release film, the reinforcement conditions include: covering the tube body with the release film, pressing the edges, rotating the release film to attach it to the tube body, pressing it, and closing the edges of the socket.
[0055] In a preferred embodiment of the present invention, the conditions for the rotational attachment include: making the release film and the tube body inclined at an angle of 15°, and using a tugwheel to rotate at a constant speed.
[0056] In a preferred embodiment of the present invention, the conditions for trimming the edges include: cutting the release film circumferentially along the socket with a cutter, and positively attaching the release film to the socket and the spigot, and pressing them tightly.
[0057] In a preferred embodiment of the present invention, the release film meets the following conditions: having an adhesive backing and a width of 600-1000 mm.
[0058] In a preferred embodiment of the present invention, the edge pressing conditions include: a width of 10-50 mm.
[0059] In a preferred embodiment of the present invention, the membrane release ring satisfies the following conditions: the width is 100 mm.
[0060] In a preferred embodiment of the present invention, when the reinforcement material is a hot-melt material, the reinforcement conditions include: preheating the pipe body, starting the rollers, performing hot-melt extrusion molding using the hot-melt material; processing the socket and allowing it to stand.
[0061] In a preferred embodiment of the present invention, the preheating conditions include: using a heating plate for preheating for 15-20 minutes.
[0062] In a preferred embodiment of the present invention, the travel speed of the roller is 3 minutes / meter.
[0063] In a preferred embodiment of the present invention, the socket processing method is to directly wrap the hot-melt material.
[0064] In a preferred embodiment of the present invention, the standing condition includes: a time of 15-20 minutes.
[0065] In a preferred embodiment of the present invention, when the reinforcement material is a cold wrap, the reinforcement conditions include: covering the pipe body with the cold wrap and placing it on rollers, starting the rollers, tightening the cold wrap, pressing the edges, wrapping the cold wrap at a uniform speed and tilted at 15°, and closing the edges of the socket.
[0066] In a preferred embodiment of the present invention, the conditions for finishing the edge include: using a cutter to cut the cold wrap tape circumferentially along the socket, using glue to positively fit the cold wrap tape to the socket and the plug, and pressing them tightly.
[0067] In a preferred embodiment of the present invention, the cold wrapping tape meets the following conditions: thickness is 1.2 mm and width is 200 mm.
[0068] In a preferred embodiment of the present invention, the edge pressing conditions include: a width of 30-50 mm.
[0069] In a preferred embodiment of the present invention, when the reinforcement material is a non-woven fabric, the reinforcement conditions include: rotating the non-woven fabric to attach it to the pipe body, pressing it tightly, and closing the socket.
[0070] In a preferred embodiment of the present invention, the nonwoven fabric meets the following conditions: having adhesive backing and a unit mass of 70 g / m 2 , width is 600-1000mm.
[0071] In a preferred embodiment of the present invention, the conditions for the rotational attachment include: making the non-woven fabric and the tube body inclined at an angle of 15°, and using a tugwheel to rotate at a constant speed.
[0072] In a preferred embodiment of the present invention, the conditions for trimming the edges include: cutting the non-woven fabric in a circumferential direction along the socket with a cutter, and using a non-woven fabric ring to positively fit the socket and the plug, and pressing them tightly.
[0073] In a preferred embodiment of the present invention, the non-woven fabric ring meets the following conditions: the width is 100 mm.
[0074] In a third aspect, the present invention provides a jacking pipe jacket prepared by the preparation method described in the second aspect.
[0075] The following will take the DN1800 pipe type as an example to calculate the cost of various types of sheaths. The calculation results are shown in Table 1.
[0076] Table 1
[0077]
[0078] It can be seen from the data in Table 1 that the cost of the jacking pipe jacket of the present invention is only 23-53% of the production cost of the traditional jacking pipe jacket, which not only saves costs but also speeds up production efficiency and is more suitable for industrial mass production.
[0079] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
[0080] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.
[0081] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.
Claims
1. A jacking jacket, characterized in that: The top pipe jacket comprises an inner layer and an outer layer; wherein, The inner layer is cast into the jacking pipe body with concrete; The outer layer is reinforced with a reinforcement material; The reinforcing material is selected from one or two or more of a release film, a hot-melt material, a cold wrap tape and a non-woven fabric.
2. The jacking sleeve according to claim 1, characterized in that: The hot-melt material is PE material.
3. A method for preparing a jacking pipe jacket, characterized in that: The preparation method comprises: firstly pouring the top pipe with concrete, comprehensively curing and grinding it, and then reinforcing the pipe body with reinforcing materials.
4. The preparation method according to claim 3, characterized in that: The reinforcing material is selected from one or two or more of a release film, a hot-melt material, a cold wrap tape and a non-woven fabric.
5. The preparation method according to claim 4, characterized in that: The hot-melt material is PE material.
6. The preparation method according to claim 4 or 5, characterized in that: When the reinforcing material is a release film, the reinforcing conditions include: covering the pipe body with the release film, pressing the edge, rotating the release film to attach it to the pipe body, pressing it tightly, and closing the edge of the socket; Preferably, the conditions for the rotation attachment include: making the release film and the tube body inclined at an angle of 15°, and using a tugwheel to rotate at a constant speed; More preferably, the edge finishing conditions include: using a cutter to cut the release film circumferentially along the socket, using the release film to positively fit the socket and the socket, and pressing them tightly; Further preferably, the release film meets the following conditions: having adhesive backing and a width of 600-1000 mm; More preferably, the conditions for edge pressing include: a width of 10-50 mm; More preferably, the membrane release ring satisfies the condition that the width is 100 mm.
7. The preparation method according to claim 4 or 5, characterized in that: When the reinforcement material is a hot-melt material, the reinforcement conditions include: preheating the pipe body, starting the rollers, using the hot-melt material for hot-melt extrusion molding; processing the socket and spigot, and standing still; Preferably, the preheating conditions include: preheating using a heating plate for 15-20 minutes; More preferably, the travel speed of the roller is 3 minutes / meter; Further preferably, the socket processing method is to directly wrap the hot melt material; More preferably, the standing condition includes: a time of 15-20 minutes.
8. The preparation method according to claim 4 or 5, characterized in that: When the reinforcement material is a cold wrap, the reinforcement conditions include: using the cold wrap to cover the pipe body and placing it on the roller, starting the roller, tightening the cold wrap, pressing the edge, winding the cold wrap at a uniform speed and at an angle of 15°, and closing the edge of the socket; Preferably, the edge finishing conditions include: using a cutter to cut the cold wrapping tape circumferentially along the socket, using glue to positively fit the cold wrapping tape on the socket and the socket, and pressing them tightly; More preferably, the cold wrapping tape meets the following conditions: thickness is 1.2 mm, width is 200 mm; Further preferably, the edge pressing conditions include: a width of 30-50 mm.
9. The preparation method according to claim 4 or 5, characterized in that: When the reinforcement material is a non-woven fabric, the reinforcement conditions include: rotating the non-woven fabric to attach it to the pipe body, pressing it tightly, and closing the socket edge; Preferably, the non-woven fabric has the following conditions: it has adhesive backing and a unit mass of 70 g / m 2 , width is 600-1000mm; More preferably, the conditions for the rotation attachment include: making the non-woven fabric and the tube body inclined at an angle of 15° and using a tug to rotate at a constant speed; Further preferably, the conditions for trimming the edge include: cutting the non-woven fabric in a circumferential direction along the socket with a cutter, and using a non-woven fabric ring to positively fit the socket and the socket, and pressing them tightly; More preferably, the non-woven fabric ring meets the condition that the width is 100 mm.
10. A jacking pipe jacket prepared by the preparation method according to any one of claims 3 to 9.