A movable air film canopy for heat preservation of foundation pit construction in winter and its assembly method

Abstract

The present invention discloses a movable air film canopy for heat preservation in winter foundation pit construction and an assembly method thereof, which belongs to the field of heat preservation canopies, and includes a guide rail assembly arranged on the ground on both sides of the foundation pit, a canopy assembly slidably arranged on the top of the guide rail assembly, and a heating assembly connected to the canopy assembly, wherein the canopy assembly is a three-layer heat preservation structure; the canopy assembly includes a drainage membrane, an arched air rib membrane, and a first heat energy reflecting surface arranged in sequence from the outside to the inside, the bottom end of the arched air rib membrane is slidably arranged on the slide rail assembly in sequence through a base and a roller, the outer circumferential side of the arched air rib membrane is coated with a drainage membrane, the bottom end of the drainage membrane extends in a direction away from the arched air rib membrane, and is fixed to the ground through rivets. The present invention adopts the above-mentioned movable air film canopy for heat preservation in winter foundation pit construction and an assembly method thereof, which has the advantages of convenient installation and disassembly, high heat preservation, automatic snow removal, removability, reusability, low cost, etc., thereby facilitating foundation pit construction in winter.

Description

Technical Field

[0001] The invention relates to the field of heat preservation canopies, and in particular to a movable air film canopy for heat preservation in foundation pit construction in winter and an assembling method thereof. Background Art

[0002] Transmission towers, also known as power towers or high-voltage power line towers, play a vital role in the power transmission system. With the development of the power system, more and more transmission towers are built in paddy fields. However, due to the muddy roads, drainage difficulties, construction organization difficulties, and long land acquisition time in paddy fields in summer, many line towers and infrastructure construction have to be carried out in winter. However, winter construction faces problems such as severe cold weather and difficulty in heat preservation.

[0003] To solve the above problems, the current winter construction of power line tower foundations mostly uses plastic film to cover the foundation pit, burns charcoal at the bottom of the pit and uses hot air energy pumps for circulating heating to ensure that the construction surface temperature reaches the temperature allowed by the regulations and prevent concrete frost heave diseases.

[0004] It can be seen that the above insulation measures have the following problems:

[0005] 1. Heating energy consumption is extremely high, and charcoal burning maintenance can easily cause carbon monoxide poisoning to construction workers, making it difficult to ensure the safety of operators;

[0006] 2. In snowy days, the thermal insulation plastic film is often crushed by the snow, resulting in construction suspension and construction delay;

[0007] 3. The poor insulation effect leads to frequent occurrence of concrete frost heave disease. Summary of the invention

[0008] In order to solve the above problems, the present invention provides a movable air film canopy for insulation in winter foundation pit construction and an assembly method thereof, which has the advantages of easy installation and disassembly, high thermal insulation, automatic snow removal, mobility, reusability, low cost, etc., thereby facilitating foundation pit construction in winter.

[0009] To achieve the above-mentioned object, the present invention provides a movable air film canopy for heat preservation in winter foundation pit construction, comprising a guide rail assembly arranged on the ground at both sides of the foundation pit, a canopy assembly slidably arranged on the top of the guide rail assembly, and a heating assembly connected to the canopy assembly, wherein the canopy assembly is a three-layer heat preservation structure;

[0010] The canopy assembly includes a drainage membrane, an arched air-ribbed membrane and a first heat-reflecting surface which are arranged in sequence from the outside to the inside. The bottom end of the arched air-ribbed membrane is slidably arranged on the slide rail assembly via a base and rollers in sequence. The outer circumferential side of the arched air-ribbed membrane is covered with a drainage membrane. The bottom end of the drainage membrane extends in a direction away from the arched air-ribbed membrane and is fixed to the ground via rivets.

[0011] Preferably, a carbon fiber cable is fixed to the outside of the drainage membrane, the bottom end of the carbon fiber cable is fixed to the ground, and the carbon fiber cable is electrically connected to the generator.

[0012] Preferably, a plurality of cables arranged axially in parallel are also fixed to the inner circumferential side of the arched air rib membrane;

[0013] The front and rear ends of the arched air rib membrane are both provided with a second heat energy reflecting surface, and the outer circumference of the second heat energy reflecting surface is connected to the correspondingly arranged cable hook through a hanging ring;

[0014] The first heat energy reflecting surface and the second heat energy reflecting surface are both thermal insulation fabric membrane materials.

[0015] Preferably, the arched air rib membrane comprises a membrane body and a suction fan, the suction fan is connected to the membrane body via a suction air duct, and the suction air duct and the membrane body are heat-sealed;

[0016] The membrane body is a flexible membrane composed of a plurality of air rib arches, and the air rib arches are connected with the suction air duct.

[0017] Preferably, the suction air duct is formed by heat-sealing a membrane material.

[0018] Preferably, the heating component includes an air energy heat pump disposed outside the canopy component, and the air energy heat pump is connected to the canopy component via a hot air inlet pipe;

[0019] The air energy heat pump is electrically connected to the generator.

[0020] Preferably, the guide rail assembly comprises a plurality of guide rail segments arranged in a linear array, two adjacent guide rail segments are connected via snap-fits, and at least one guide rail segment is connected to a screw pile driven into the ground via a snap-fit.

[0021] Preferably, the guide rail section and the base are both made of steel.

[0022] Preferably, the arched air fin membrane is heat-sealed to the drainage membrane.

[0023] The method for assembling a movable air film canopy for heat preservation in winter foundation pit construction is characterized by comprising the following steps:

[0024] S1. Use a van to transport the guide rail assembly, canopy assembly and heating assembly to the foundation pit site;

[0025] S2. Synchronously assemble the guide rail components:

[0026] On the ground on both sides of the foundation pit, use a pile driver to drive the spiral piles into the ground until the top of the spiral piles is flush with the ground, then use a buckle to fix the guide rail section to the top of the spiral pile, and finally use the buckle to fix two adjacent guide rail sections;

[0027] S3, turn on the suction fan, inflate the arched air rib membrane through the suction air duct until the set time, and then turn off the suction fan;

[0028] S4, lift the canopy assembly onto the guide rail assembly, and push the canopy assembly along the guide rail assembly until the canopy assembly is located directly above the foundation pit;

[0029] S5, using rivets to fix the drainage membrane to the ground away from the direction of the arched air rib membrane, and passing the carbon fiber cable around the drainage membrane and fixing it to the ground;

[0030] S6. Use a hanging ring to hang the second heat reflective surface to the first height position at the front and rear ends of the arched air rib membrane, leaving a margin for construction equipment and personnel to enter between the first height position and the ground;

[0031] S7. Construction equipment and personnel enter the canopy assembly;

[0032] S8, hanging the second heat energy reflecting surface at the second height position of the arched air ribbed membrane, using the second heat energy reflecting surface to close the front and rear ends of the arched air ribbed membrane, turning on the generator and the air energy heat pump, and using the hot air inlet pipe to pass hot air into the canopy assembly to achieve internal heat preservation of the canopy assembly, wherein the second height position is lower than the first height position;

[0033] S9. After the construction is completed, the rivets are pulled out and the air in the arched air rib membrane is extracted by a suction fan;

[0034] S10, remove the arched air rib membrane from the guide rail assembly, fold it and reload it onto the van, open the buckle at the same time, remove the guide rail assembly and the screw pile, and load them onto the van for next use.

[0035] The present invention has the following beneficial effects:

[0036] 1. The air-ribbed membrane structure is composed of multiple air-ribbed arches. The number of air-ribbed arches can be adjusted according to the length of the foundation pit. At the same time, the air can be exhausted or inflated by a suction fan. It is more flexible to use, more convenient to disassemble and assemble, and easy to reuse;

[0037] 2. The setting of the guide rail assembly makes it convenient for the canopy assembly to be inflated on the ground and then moved along the guide rail to the top of the foundation pit;

[0038] 3. Triple insulation structure, with the advantages of good insulation performance and low heating energy consumption;

[0039] 4. The use of carbon fiber cables has the advantages of being windproof and able to melt snow after being powered on, which enables construction even on windy and snowy days, greatly saving construction time;

[0040] 5. The height of the heat reflective surface is adjustable, which is convenient for raising when the equipment enters the site, and can be lowered after entering the site, reducing the heat circulation time and saving heating energy consumption.

[0041] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A three-dimensional diagram of a movable air film canopy for heat preservation in winter foundation pit construction according to the present invention;

[0043] Figure 2 This is a front view of a movable air film canopy for heat preservation in winter foundation pit construction according to the present invention;

[0044] Figure 3 It is a side view of a movable air film canopy for heat preservation in winter foundation pit construction according to the present invention;

[0045] Figure 4 The present invention is a top view of a movable air film canopy for heat preservation in winter foundation pit construction.

[0046] Among them: 1. Arched air rib membrane; 2. Suction fan; 3. Suction duct; 4. Base; 5. Screw pile; 6. Guide rail section; 7. Carbon fiber cable; 8. Drainage membrane; 9. Rivet; 10. First heat energy reflecting surface; 11. Hanging ring; 12. Cable; 13. Roller; 14. Buckle; 15. Generator; 16. Air energy heat pump; 17. Pile driver; 18. Van. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical scheme and advantages disclosed in the embodiments of the present invention clearer, the embodiments of the present invention are further described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the embodiments of the present invention and are not intended to limit the embodiments of the present invention. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions.

[0048] It should be noted that the terms "include", "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or server comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or devices.

[0049] Like reference numerals and letters denote similar items in the following drawings, and thus, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0050] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0051] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] like Figure 1-Figure 4 As shown, a movable air-film canopy for insulation of foundation pit construction in winter includes a guide rail assembly arranged on the ground on both sides of the foundation pit, a canopy assembly slidably set on the top of the guide rail assembly, and a heating assembly connected to the canopy assembly, and the canopy assembly is a three-layer insulation structure; the canopy assembly includes a drainage membrane 8, an arched air-ribbed membrane 1 and a first heat energy reflecting surface 10 arranged in sequence from the outside to the inside, the bottom end of the arched air-ribbed membrane 1 is slidably set on the slide rail assembly via a base 4 and rollers 13 in sequence, the outer circumferential side of the arched air-ribbed membrane 1 is covered with a drainage membrane 8, the bottom end of the drainage membrane 8 extends in a direction away from the arched air-ribbed membrane 1, and is fixed to the ground by rivets 9.

[0053] A carbon fiber cable 7 is fixed to the outside of the drainage membrane 8, the bottom end of the carbon fiber cable 7 is fixed to the ground, and the carbon fiber cable 7 is electrically connected to the generator 15, so that when snow accumulates on the top of the canopy assembly, the carbon fiber cable can be energized to heat it and melt the snow, and the snow water is guided along the drainage membrane 8 to the ground away from the arched air rib membrane 1 (foundation pit), avoiding flowing into the foundation pit. The arched air rib membrane 1 and the drainage membrane 8 are heat-sealed.

[0054] Preferably, a plurality of cables 12 arranged axially in parallel are also fixed to the inner circumferential side of the arched air rib type membrane 1; a second heat energy reflecting surface is provided at both the front and rear ends of the arched air rib type membrane 1, and the outer circumferential side of the second heat energy reflecting surface is hooked and connected with the correspondingly arranged cables 12 via a hanging ring 11; the first heat energy reflecting surface 10 and the second heat energy reflecting surface are both thermal insulation fabric membrane materials.

[0055] The arched air rib membrane 1 includes a membrane body and a suction fan 2, the suction fan 2 is connected to the membrane body through a suction air duct 3, and the suction air duct 3 is heat-sealed to the membrane body; the membrane body is a flexible membrane composed of a plurality of air rib arches, and the air rib arches are connected to the suction air duct 3. The suction air duct 3 is formed by heat-sealing the membrane material. In this embodiment, the number of air rib arches can be adjusted according to the length of the foundation pit to be constructed, and the use is more flexible.

[0056] The heating component includes an air energy heat pump 16 disposed outside the canopy component. The air energy heat pump 16 is connected to the canopy component via a hot air inlet pipe. The air energy heat pump 16 is electrically connected to the generator 15 .

[0057] The guide rail assembly includes a plurality of guide rail segments 6 arranged in a linear array, two adjacent guide rail segments 6 are connected via buckles 14, and at least one guide rail segment 6 is connected to a screw pile 5 driven into the ground via the buckle 14. The guide rail segments 6 and the base 4 are both made of steel.

[0058] The method for assembling a movable air film canopy for heat preservation in winter foundation pit construction is characterized by comprising the following steps:

[0059] S1. Using a van 18 to transport the guide rail assembly, the canopy assembly and the heating assembly to the foundation pit site;

[0060] S2. Synchronously assemble the guide rail components:

[0061] On the ground at both sides of the foundation pit, the screw pile 5 is driven into the ground by a pile driver 17 until the top of the screw pile 5 is flush with the ground, and then the guide rail section 6 is fixed to the top of the screw pile 5 by a buckle 14, and finally the two adjacent guide rail sections 6 are fixed by the buckle 14;

[0062] S3, turning on the suction fan 2, inflating the arched air rib membrane 1 through the suction air duct 3 until the set time, and then turning off the suction fan 2;

[0063] S4, lift the canopy assembly onto the guide rail assembly, and push the canopy assembly along the guide rail assembly until the canopy assembly is located directly above the foundation pit;

[0064] S5, using rivets 9 to fix the drainage membrane 8 to the ground in a direction away from the arched air rib membrane 1, and passing the carbon fiber cable 7 around the drainage membrane 8 and fixing it to the ground;

[0065] S6. Use the hanging ring 11 to hang the second heat reflective surface to the first height position at the front and rear ends of the arched air rib membrane 1, leaving a margin for construction equipment and personnel to enter between the first height position and the ground;

[0066] S7. Construction equipment and personnel enter the canopy assembly;

[0067] S8, hang the second heat energy reflecting surface at the second height position of the arched air ribbed membrane 1, use the second heat energy reflecting surface to close the front and rear ends of the arched air ribbed membrane 1, turn on the generator 15 and the air energy heat pump 16, use the hot air inlet pipe to pass hot air into the canopy assembly to achieve internal heat preservation of the canopy assembly, wherein the second height position is lower than the first height position;

[0068] S9, after the construction is completed, the rivet 9 is pulled out, and the air in the arched air rib membrane 1 is extracted by the suction fan 2;

[0069] S10, remove the arched air rib membrane 1 from the guide rail assembly, fold it and reload it onto the van 18, open the buckle 14 at the same time, remove the guide rail assembly and the screw pile 5, and load them onto the van 18 for next use.

[0070] Therefore, the present invention adopts the above-mentioned movable air film canopy for insulation of winter foundation pit construction and its assembly method, which has the advantages of easy installation and disassembly, high thermal insulation, automatic snow removal, mobility, reusability, low cost, etc., thereby facilitating foundation pit construction in winter.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A movable air film canopy for heat preservation in winter foundation pit construction, characterized by: It includes a guide rail assembly arranged on the ground at both sides of the foundation pit, a canopy assembly slidably arranged on the top of the guide rail assembly, and a heating assembly connected to the canopy assembly, and the canopy assembly is a three-layer insulation structure; The canopy assembly includes a drainage membrane, an arched air rib membrane and a first heat energy reflecting surface which are sequentially arranged from the outside to the inside. The bottom end of the arched air rib membrane is sequentially slidably arranged on the slide rail assembly via a base and a roller. The outer circumference of the arched air rib membrane is covered with a drainage membrane. The bottom end of the drainage membrane extends in a direction away from the arched air rib membrane and is fixed to the ground via rivets. A carbon fiber cable is fixed to the outside of the drainage membrane, the bottom end of the carbon fiber cable is fixed on the ground, and the carbon fiber cable is electrically connected to the generator; A plurality of cables arranged axially parallel are also fixed to the inner circumference of the arched air-ribbed membrane; The front and rear ends of the arched air rib membrane are both provided with a second heat energy reflecting surface, and the outer circumference of the second heat energy reflecting surface is connected to the correspondingly arranged cable hook through a hanging ring; The first heat energy reflecting surface and the second heat energy reflecting surface are both thermal insulation fabric membrane materials.

2. The movable air film canopy for heat preservation in winter foundation pit construction according to claim 1 is characterized by: The arched air rib membrane includes a membrane body and a suction fan, the suction fan is connected to the membrane body through a suction air duct, and the suction air duct and the membrane body are heat-sealed; The membrane body is a flexible membrane composed of a plurality of air rib arches, and the air rib arches are connected with the suction air duct.

3. The movable air film canopy for heat preservation of foundation pit construction in winter according to claim 2, characterized in that: The suction air duct is formed by heat-sealing membrane materials.

4. The movable air film canopy for heat preservation in winter foundation pit construction according to claim 1 is characterized by: The heating component includes an air energy heat pump disposed outside the canopy component, and the air energy heat pump is connected to the canopy component via a hot air inlet pipe; The air energy heat pump is electrically connected to the generator.

5. The movable air film canopy for heat preservation in winter foundation pit construction according to claim 1 is characterized by: The guide rail assembly comprises a plurality of guide rail segments arranged in a linear array, two adjacent guide rail segments are connected via buckles, and at least one guide rail segment is connected to a screw pile driven into the ground via a buckle.

6. The movable air film canopy for heat preservation in winter foundation pit construction according to claim 5 is characterized by: The guide rail sections and base are made of steel.

7. The movable air film canopy for heat preservation in winter foundation pit construction according to claim 1 is characterized by: The arched air fin membrane is heat-sealed to the drainage membrane.

8. The method for assembling a movable air film canopy for heat preservation in winter foundation pit construction according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Use a van to transport the guide rail assembly, canopy assembly and heating assembly to the foundation pit site; S2. Synchronously assemble the guide rail components: On the ground on both sides of the foundation pit, use a pile driver to drive the spiral piles into the ground until the top of the spiral piles is flush with the ground, then use a buckle to fix the guide rail section to the top of the spiral pile, and finally use the buckle to fix two adjacent guide rail sections; S3, turn on the suction fan, inflate the arched air rib membrane through the suction air duct until the set time, and then turn off the suction fan; S4, lift the canopy assembly onto the guide rail assembly, and push the canopy assembly along the guide rail assembly until the canopy assembly is located directly above the foundation pit; S5, using rivets to fix the drainage membrane to the ground away from the direction of the arched air rib membrane, and passing the carbon fiber cable around the drainage membrane and fixing it to the ground; S6. Use a hanging ring to hang the second heat reflective surface to the first height position at the front and rear ends of the arched air rib membrane, leaving a margin for construction equipment and personnel to enter between the first height position and the ground; S7. Construction equipment and personnel enter the canopy assembly; S8, hanging the second heat energy reflecting surface at the second height position of the arched air ribbed membrane, using the second heat energy reflecting surface to close the front and rear ends of the arched air ribbed membrane, turning on the generator and the air energy heat pump, and using the hot air inlet pipe to pass hot air into the canopy assembly to achieve internal heat preservation of the canopy assembly, wherein the second height position is lower than the first height position; S9. After the construction is completed, the rivets are pulled out and the air in the arched air rib membrane is extracted by a suction fan; S10, remove the arched air rib membrane from the guide rail assembly, fold it and reload it onto the van, open the buckle at the same time, remove the guide rail assembly and the screw pile, and load them onto the van for next use.

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