Film paving equipment and film paving method for intelligent greenhouse

Abstract

The invention relates to film laying equipment and a film laying method for an intelligent greenhouse, and belongs to the technical field of intelligent greenhouses. The film laying equipment comprises a main body frame which is located above a vault and comprises an operation platform and an operation window; the walking wheels are arranged at the bottom of the main body frame, and the main body frame walks in the drainage gutter through the walking wheels; the film laying assembly is arranged at the top of the main body frame and comprises a plurality of film laying rollers, the multiple film laying rollers are divided into three groups, each group at least comprises two film laying rollers, the first group of film laying rollers and the third group of film laying rollers are symmetrically arranged on the two sides of the second group of film laying rollers, and the axis of the first group of film laying rollers and the axis of the third group of film laying rollers are obliquely arranged; according to the intelligent greenhouse film laying device, an operator is allowed to achieve film laying of the double-layer pneumatic film on the vault of the intelligent greenhouse, the laying efficiency is improved, and the laying difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent greenhouses, and in particular to a film laying device and a film laying method for an intelligent greenhouse. BACKGROUND

[0002] An intelligent greenhouse (also known as a smart greenhouse) is a high-level greenhouse form that integrates modern information technologies such as the Internet of Things, big data, artificial intelligence, and automatic control. It completely changes the mode of relying on manual experience and extensive management of traditional greenhouses, and realizes precise monitoring, intelligent decision-making, and automatic control of the internal environment of the greenhouse (such as temperature, humidity, light, CO2 concentration, and soil moisture).

[0003] In the construction process of the existing intelligent greenhouse, a double-layer film usually needs to be laid on the vault. Since the height of the vault is usually between 6m-9m, the operator needs to use a high-altitude work platform to successfully lay, tighten, and fix the inflatable film on the vault. Since the inflatable film is double-layered, and both layers of the inflatable film need to be laid, tightened, and fixed, the operation difficulty is further increased.

[0004] Therefore, there is an urgent need for a film laying device for an intelligent greenhouse. SUMMARY

[0005] In order to solve the problem of high operation difficulty in laying a double-layer inflatable film on the vault of the existing intelligent greenhouse, the present application provides a film laying device and a film laying method for an intelligent greenhouse.

[0006] In a first aspect, the present application provides a film laying device for an intelligent greenhouse, which adopts the following technical solution: A film laying device for an intelligent greenhouse comprises: a main frame located above the vault of the intelligent greenhouse and comprising an operation platform and an operation window, both of which are directed towards the vault of the intelligent greenhouse; a walking wheel arranged at the bottom of the main frame, the main frame walking in the steel drainage gutter of the vault of the intelligent greenhouse by means of the walking wheel; a film laying assembly arranged at the top of the main frame and comprising a plurality of film laying rollers, the plurality of film laying rollers being divided into three groups, each group comprising at least two film laying rollers, the first group of film laying rollers and the third group of film laying rollers being symmetrically arranged on both sides of the second group of film laying rollers, the axis of the first group of film laying rollers and the axis of the third group of film laying rollers both being inclined, and the film laying rollers being used to carry the inflatable film.

[0007] By adopting the technical scheme, the main frame is located above the vault, and can move along the length direction of the vault by means of the walking wheels, the main frame is provided with an operation platform and an operation window, an operator can stand on the operation platform and fix the inflatable film through the operation window, the walking wheels are arranged at the bottom of the main frame and located in the steel drainage gutters on both sides of the vault, the steel drainage gutters play a guiding role, and the operator can push the film laying equipment along the length direction of the main frame through the walking wheels. The film laying assembly is arranged on the main frame, the film laying assembly comprises a plurality of film laying rollers, the inflatable film in a roll shape is placed on the film laying rollers, three groups of the film laying rollers correspond to three regions of the vault respectively, and in order to improve the film laying efficiency, the axes of the film laying rollers on both sides are arranged in an inclined manner. By means of the film laying equipment, the operator needs an additional platform and equipment when assisting in film laying, which not only ensures the safety of the operator, but also reduces additional operations and improves the film laying efficiency.

[0008] Optionally, the main frame comprises a base frame and side frames, the side frames are arranged on both sides of the base frame, the side frames are truss structures, the film laying rollers are connected to the side frames, and the operation platform and the operation window are located on the base frame.

[0009] By adopting the technical scheme, the main frame comprises a base frame and side frames, the side frames are truss structures, the film laying rollers are connected to the side frames, and the operation platform and the operation window are located on the base frame.

[0010] Optionally, the main frame is arched, the main frame comprises inclined portions and a horizontal portion, the inclined portions are two and symmetrically arranged on both sides of the horizontal portion, the two inclined portions correspond to the first group of film laying rollers and the third group of film laying rollers respectively, and the horizontal portion corresponds to the second group of film laying rollers, and the inclined portions and the horizontal portion are both provided with the operation platform and the operation window.

[0011] By adopting the technical scheme, in order to further improve the film laying efficiency, the main frame is arranged in an arched shape, and the main frame comprises inclined portions and a horizontal portion, the inclined portions are two and symmetrically arranged on both sides of the horizontal portion, the two inclined portions correspond to the first group of film laying rollers and the third group of film laying rollers respectively, and the horizontal portion corresponds to the second group of film laying rollers, and the inclined portions and the horizontal portion are both provided with the operation platform and the operation window.

[0012] Optionally, the base frame comprises support pipes and a support net, the support pipes form a main structure of the base frame, and the support net is arranged on the main structure to form the operation platform.

[0013] By adopting the technical scheme, the underframe comprises a support pipe and a support net, the support pipe forms a main structure of the underframe, and the support net is arranged on the support pipe and forms an operation platform, which can carry an operator, so that the production cost is reduced and the maintenance is facilitated.

[0014] Optionally, an observation opening is formed in the underframe, and a reversible cover plate is arranged at the observation opening, and the cover plate and the observation opening combine to form the operation window.

[0015] By adopting the technical scheme, in order to avoid the operator's foot from falling into the operation window due to an error, the observation opening is formed in the underframe, and the reversible cover plate is arranged at the observation opening, and the cover plate and the observation opening form the operation window, so that the operation window can be closed by the cover plate when it is not needed, so as to ensure that the operator's foot or tool does not fall from the operation window to the vault.

[0016] Optionally, the film laying assembly further comprises a mounting rod and a connecting fastener, one end of the mounting rod is connected to the main frame, and the other end is connected to the end of the film laying roller by means of the connecting fastener.

[0017] By adopting the technical scheme, the film laying assembly further comprises a mounting rod and a connecting fastener, one end of the mounting rod is connected to the main frame by welding, and the other end is connected to the end of the film laying roller by means of the connecting fastener, so that the film laying roller can be quickly installed and disassembled, and the film laying efficiency is improved.

[0018] Optionally, the film laying assembly further comprises a film blocking plate, which is sleeved on the film laying roller and used for positioning the film laying roller.

[0019] By adopting the technical scheme, since the roll-shaped inflatable film is usually arranged in multiple layers, in order to facilitate the operator to spread, the roll-shaped inflatable film is usually placed on the center line of the area to be spread, so that the spread film is not moved too much, and in order to realize this adjustment, the film blocking plate is arranged on the film laying roller, the film blocking plate contacts the outer side of the roll-shaped film, and the position of the roll-shaped inflatable film can be adjusted by the position of the film blocking plate on the film laying roller.

[0020] Optionally, the walking wheel is a brake caster.

[0021] By adopting the technical scheme, since the roll-shaped inflatable film is usually in a folded multi-layer roll shape, after the film laying device travels for a distance, an operator needs to unfold the folded multi-layer inflatable film, and when unfolding, the main frame needs to stop moving, therefore, the caster with brake can prevent the movement of the main frame. In addition, during the process of fixing the inflatable film after completing the film laying, the operator standing on the main frame also needs to fix the main frame to improve the efficiency of film fixing.

[0022] Optionally, the lifting hooks are arranged on both sides of the main frame and used to cooperate with external lifting equipment.

[0023] By adopting the technical scheme, since the film laying device is relatively large as a whole, and after completing the film laying on the vault, needs to move to the next vault for film laying, therefore, the film laying device needs to be moved by means of lifting equipment. In order to facilitate lifting, the lifting hooks are specially arranged on both sides of the main frame, the lifting hooks cooperate with the lifting equipment to complete the movement of the film laying device, and the positions of the lifting hooks are arranged in a symmetrical manner with respect to the center of the film laying device, which is beneficial to improve the stability of the film laying device during movement.

[0024] In a second aspect, the application provides a film laying method for an intelligent greenhouse, adopting the following technical scheme: A film laying method for an intelligent greenhouse, comprising the following steps: S1, placing the film laying device on the vault of the intelligent greenhouse by means of the lifting equipment, and at the same time, the traveling wheels of the film laying device are placed in the steel drainage gutters on both sides of the corresponding vault; S2, installing the roll-shaped inflatable film on the film laying roller, and fixing the starting ends of the double-layer inflatable film on the starting end of the vault by means of the clamping spring; S3, the operator stands on the vault and simultaneously pushes the film laying device forward, and during the film laying process of the film laying roller, the operator unfolds the opened film in real time to make the double-layer inflatable film smoothly laid on the vault; S4, after the entire vault is laid with the film, the inflatable film is cut to form the termination end of the inflatable film, and the inflatable film on the vault is pulled tight by the external film tightening roller; S5, after the inflatable film is pulled tight, the operator fixes the inflatable film by means of the operation platform and operation window on the film laying device, and the fixed points include the vertex of the arch, the lowest point of the arch, the middle point of the side of the arch, and the film fixing point around the skylight; S6, after the double-layer inflatable film is fixed, the film laying device is transported to the vault of the next span by means of the lifting equipment.

[0025] In summary, the application has at least one of the following beneficial technical effects: 1. The main frame is arched and located above the intelligent greenhouse. The operator can stand on the operation platform to work without additional scaffolding or using aerial work equipment, reducing the risk of falling from a height. The walking wheels move along the steel drainage gutters on both sides of the vault, ensuring the stability of the equipment during movement. The film laying rollers are divided into three groups and cover different areas of the vault. The number of film laying rollers in the same group is at least two, which can realize the laying of double-layer inflatable film, reduce the number of repeated movement of the film laying equipment, and improve the efficiency of film laying.

[0026] 2. The main frame adopts a combination of truss side frames, support pipes and support nets. It not only ensures the overall stiffness, but also reduces the weight of the equipment, making it easy to lift and move. The film laying rollers are fixed on the side frame through the installation rod and the connecting fastener, realizing quick disassembly and assembly, and facilitating the replacement of film rolls or position adjustment. The setting of the film blocking plate allows the position of the rolled inflatable film to be adjusted during the spreading process, avoiding film body deviation and improving film laying efficiency. In addition, the walking wheels are equipped with brake casters, which can fix the position of the equipment when needed, facilitating the operator to unfold the film body or perform local fixing work. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is the overall structure schematic diagram of the film laying equipment provided in the present application; Figure 2 is a partial enlarged schematic diagram of part A in Figure 1 Figure 3 is a partial enlarged schematic diagram of part B in Figure 1 Figure 4 is a left view of Figure 1 Figure 5 is a top view of Figure 1 is a structure schematic diagram of the cover plate and the observation port in the present application; Figure 6 is a logic diagram of the film laying method provided in the present application. Figure 7 BRIEF DESCRIPTION OF DRAWINGS:

[0028] 1. Main frame; 2. Walking wheel; 3. Film laying roller; 4. Installation rod; 5. Connecting fastener; 6. Film blocking plate; 7. Hoisting hook; 8. Observation port; 9. Cover plate; 11. Base frame; 12. Side frame; 111. Support pipe; 112. Support net. DETAILED DESCRIPTION The present application will be further described in detail below with reference to the accompanying drawings.

[0029] Figures 1-7 The present application will be further described in detail below with reference to the accompanying drawings.

[0030] ​​​​The embodiment of the application discloses a film laying device for an intelligent greenhouse.

[0031] Referring to Figures 1 to 6 A film laying device for an intelligent greenhouse comprises a main frame 1, traveling wheels 2 and a film laying assembly.

[0032] The main frame 1 comprises a base frame 11 and side frames 12, the side frames 12 are two and are in a truss structure, which is beneficial to improve the rigidity of the main frame 1 as a whole, and the base frame 11 is located between the two side frames 12. The main frame 1 as a whole is in an arch shape, that is, it is divided into inclined parts and a horizontal part, the inclined parts are two and are symmetrically arranged on the two sides of the horizontal part, the inclined parts correspond to the side of the arch top, and the horizontal part corresponds to the middle part of the arch top.

[0033] Referring to Figure 4 And Figure 6 The base frame 11 is composed of support pipes 111 and a support net 112, the support pipes 111 are multiple and form a main structure of the base frame 11, and the support net 112 is laid on the main structure to bear an operator, an observation port 8 is arranged on the main structure, and a cover plate 9 is rotationally arranged at the observation port 8, the cover plate 9 can be flipped, and the opening and closing of an operation window are realized through the flipping of the cover plate 9.

[0034] The side frames 12 are mainly composed of galvanized square pipes and form a truss structure. The support pipes 111 are also galvanized square pipes.

[0035] Referring to Figure 1 And Figure 4 The inclined parts and the horizontal part are both provided with operation platforms and operation windows.

[0036] The traveling wheels 2 are located at the bottom of the main frame 1, and the traveling wheels 2 travel in steel drainage gutters on the two sides of the arch top. When the film laying device is placed on the arch top by means of external hoisting equipment, the traveling wheels 2 are just located in the drainage gutters on the two sides of the arch top, and the drainage gutters guide the traveling wheels 2. In order to avoid the main frame 1 from being randomly moved by means of the traveling wheels 2, the traveling wheels 2 are arranged in the form of a brake foot wheel.

[0037] Referring to Figures 1 to 3 The film laying assembly is arranged on the main frame 1 and is used for laying a roll-shaped inflatable film on the arch top. The film laying assembly comprises film laying rollers 3, mounting rods 4, connecting fasteners 5 and film blocking plates 6. The bottom end of the mounting plate is welded on the side frame 12, the top end is connected with the end of the film laying roller 3 by means of the connecting fastener, and the two ends of the film laying roller 3 are connected on the main frame 1 by means of the connecting fasteners 5 and the mounting rods 4.

[0038] The connecting fastener is usually a cross member and is mainly used for the connection and fixation between square pipes.

[0039] Since the intelligent greenhouse requires double-layer inflatable film, the corresponding membrane laying roller 3 in the same area of the arch top is at least two, since the main frame 1 is divided into two inclined parts and one horizontal part, the membrane laying roller 3 is divided into three groups, and each group has at least two membrane laying rollers 3. In order to reduce the cost and simplify the overall structure, two membrane laying rollers 3 are arranged in each group. The axes of the two membrane laying rollers 3 are parallel to each other, and each membrane laying roller 3 has a roll of inflatable film.

[0040] In an actual application, the same group includes four membrane laying rollers 3, as shown in Figure 4 Two membrane laying rollers 3 are connected to the "left side" of the main frame 1, and the other two membrane laying rollers 3 are connected to the "right side" of the main frame 1. That is, in the structure shown in Figure 4 There are twelve membrane laying rollers 3 in total, six of which are distributed on the left side of the main frame 1, and six of which are distributed on the right side of the main frame 1.

[0041] Since the position of the inflatable film on the membrane laying roller 3 needs to be adjusted, a film blocking plate 6 is sleeved on the membrane laying roller 3, and the film blocking plate 6 is particularly needed when the axis of the membrane laying roller 3 is inclined. The film blocking plate 6 is located below the roll-shaped film and contacts the side of the roll-shaped film, and the position of the roll-shaped inflatable film can be adjusted through the film blocking plate 6.

[0042] The implementation principle of the membrane laying device for the intelligent greenhouse according to the embodiment of the application is as follows: first, the membrane laying device is placed on the arch top of the intelligent greenhouse by the external hoisting device, then the roll-shaped film is installed on the corresponding membrane laying roller 3, and then the operator walks along the length direction of the arch top by means of the walking wheel 2, and in the process of walking, the roll-shaped inflatable film on the membrane laying roller 3 is laid and unfolded; after the entire laying of the inflatable film is completed, the double-layer inflatable film is fixed by means of the membrane laying device, and after the fixing is completed, the membrane laying device can be transported to the next arch top by means of the hoisting device.

[0043] Referring to Figure 7 , the embodiment of the application also discloses a membrane laying method for an intelligent greenhouse.

[0044] The membrane laying method comprises the following steps: S1, the membrane laying device is placed on the arch top of the intelligent greenhouse by means of the hoisting device, and at the same time, the walking wheel 2 of the membrane laying device is placed in the steel drainage gutter on both sides of the corresponding arch top.

[0045] In this step, the lifting device is connected to the lifting hook 7 of the main frame 1 through the hook or rope, and since the lifting hook 7 is multiple and symmetrically arranged, the stability of the membrane laying device during movement can be maintained. When the lifting device places the membrane laying device on the vault, the walking wheels 2 at the bottom of the membrane laying device will fall into the steel drainage gutters on both sides of the vault. After placement, the walking wheels 2 can walk along the length direction of the drainage gutter.

[0046] S2, install the roll-shaped inflatable film on the membrane laying roller 3, and fix the starting end of the double-layer inflatable film on the starting end of the vault with a snap spring.

[0047] In this step, the roll-shaped inflatable film is transported in the air by lifting, and then installed on the membrane laying roller 3 with the assistance of the operator. When installing the roll-shaped inflatable film on the membrane laying roller 3 corresponding to both sides of the vault, it is necessary to ensure that the roll-shaped inflatable film is in contact with the membrane blocking plate 6, and before installation, the operator adjusts the position of the membrane blocking plate 6 to ensure that the installed roll-shaped inflatable film is placed correctly, so that the operator can easily complete the film unfolding operation without much effort.

[0048] S3, the operator stands on the vault and pushes the membrane laying device forward, and during the film laying process of the membrane laying roller 3, the operator unfolds the film in real time to smoothly lay the double-layer inflatable film on the vault.

[0049] In this step, when the starting end of the inflatable film is fixed on the starting end of the vault, the operator can push the membrane laying device to move, and during the movement, since the starting end of the inflatable film is fixed, the roll-shaped inflatable film will be laid out. In order to facilitate transportation, the roll-shaped inflatable film is usually rolled in multiple layers during production, so after the roll-shaped inflatable film is laid out, the operator usually needs to unfold the stacked inflatable film, and the unfolded inflatable film can be laid on the vault. And since double-layer inflatable film needs to be laid on the vault, the operator needs to unfold and arrange the laid inflatable film.

[0050] It should be particularly noted that during the film laying process, in order to improve the film laying efficiency and safety, only two rolls of inflatable film are usually installed on the membrane laying device, which means that if the entire vault is to be laid with inflatable film, three times of inflatable film transportation is required, and only one area of the vault can be laid with film each time.

[0051] S4, after the entire vault is laid with film, the inflatable film is cut to form the termination end of the inflatable film, and the external film tensioning roller is used to tension the inflatable film on the vault.

[0052] In this step, when the entire dome is completed with the film laying, the inflatable film is cut to determine the termination of the inflatable film and closed, and then the external film tensioning roller is contacted to tighten the inflatable film on the dome. Only when the inflatable film is in a tensioned state, the inflatable film will closely adhere to the dome.

[0053] S5, after the inflatable film is tensioned, the operator fixes the inflatable film by means of the operation platform and operation window on the film laying equipment. The fixed points include the vertex of the arch, the lowest point of the arch, the intermediate point of the lateral side of the arch, and the film fixing point around the skylight.

[0054] In this step, after the inflatable film is tensioned, especially after the double-layer inflatable film is tensioned, the operator needs to fix the inflatable film by means of the film laying equipment. Since the dome has a recess structure reserved, when the inflatable film is fixed, the inflatable film can be pressed into the recess structure of the dome by the pressing module. There are some positions on the dome that must be fixed, including the vertex of the arch, the lowest point of the arch, and the intermediate point of the lateral side of the arch. These three points are relative to the cross section of the arch. In the three-dimensional state, the vertex of the arch forms a straight line, and similarly, the lowest point of the arch forms a straight line, and the intermediate point of the lateral side of the arch forms a straight line. These three straight lines need to be fixed by the pressing module. In addition, since the dome usually has a skylight reserved, film fixing points need to be set around the skylight, usually four pressing modules are set, one corresponding to each side.

[0055] S6, after the double-layer inflatable film is fixed, the film laying equipment is transported to the dome of the next span by means of the hoisting equipment.

[0056] In this step, after the double-layer inflatable film is fixed, that is, after all the inflatable films on the entire dome are fixed, the film laying equipment can be transported to the next dome by the external hoisting equipment.

[0057] The embodiments of the specific embodiment are the preferred embodiments of the present application, and are not limited to the protection scope of the present application. Therefore, any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A film-laying device for intelligent greenhouses, characterized in that, include: The main frame (1) is located above the arch of the intelligent greenhouse and includes an operating platform and an operating window, both of which face the arch of the intelligent greenhouse; Walking wheels (2) are set at the bottom of the main frame (1), and the main frame (1) moves in the steel drainage gutter of the arch of the intelligent greenhouse with the help of the walking wheels (2); The film-laying assembly is located on the top of the main frame (1) and includes multiple film-laying rollers (3). The multiple film-laying rollers (3) are divided into three groups, each group including at least two film-laying rollers (3). The first group of film-laying rollers (3) and the third group of film-laying rollers (3) are symmetrically arranged on both sides of the second group of film-laying rollers (3). The axis of the first group of film-laying rollers (3) and the axis of the third group of film-laying rollers (3) are both inclined. The film-laying rollers (3) are used to carry the inflatable film.

2. The film-laying equipment for intelligent greenhouses according to claim 1, characterized in that: The main frame (1) includes a base frame (11) and a side frame (12). The side frame (12) is located on both sides of the base frame (11). The side frame (12) is a truss structure. The film-laying roller (3) is connected to the side frame (12). The operating platform and the operating window are located on the base frame (11).

3. The film-laying equipment for intelligent greenhouses according to claim 2, characterized in that: The main frame (1) is arched and includes an inclined part and a horizontal part. There are two inclined parts symmetrically arranged on both sides of the horizontal part. The two inclined parts correspond to the first group of film-laying rollers (3) and the third group of film-laying rollers (3) respectively. The horizontal part corresponds to the second group of film-laying rollers (3). The inclined part and the horizontal part are both provided with the operating platform and the operating window.

4. The film-laying equipment for intelligent greenhouses according to claim 3, characterized in that: The base frame (11) includes a support pipe (111) and a support net (112). The support pipe (111) forms the main structure of the base frame (11), and the support net (112) is laid on the main structure to form the operating platform.

5. The film-laying equipment for intelligent greenhouses according to claim 4, characterized in that: An observation port (8) is provided on the base frame (11), and a flip-up cover plate (9) is provided at the observation port (8). The cover plate (9) and the observation port (8) are combined to form the operation window.

6. The film-laying equipment for intelligent greenhouses according to any one of claims 1-5, characterized in that: The film-laying assembly also includes a mounting rod (4) and a connecting fastener. One end of the mounting rod (4) is connected to the main frame (1), and the other end is connected to the end of the film-laying roller (3) by means of the connecting fastener.

7. The film-laying equipment for intelligent greenhouses according to claim 6, characterized in that: The film-laying assembly also includes a baffle plate (6), which is sleeved on the film-laying roller (3) and used for positioning the film-laying roller (3).

8. The film-laying equipment for intelligent greenhouses according to any one of claims 1-5, characterized in that: The traveling wheel (2) is a caster wheel with brake.

9. The film-laying equipment for intelligent greenhouses according to any one of claims 1-5, characterized in that: It also includes lifting hooks (7), which are arranged on both sides of the main frame (1) and used to cooperate with external lifting equipment.

10. A method for laying film in an intelligent greenhouse, characterized in that: Includes the following steps: S1. Use hoisting equipment to place the film laying equipment on the arch of the intelligent greenhouse. At the same time, the walking wheels (2) of the film laying equipment should be placed in the steel drainage gutters on both sides of the corresponding arch. S2. Install the roll of inflatable film onto the film-laying roller (3), and fix the starting ends of the double-layer inflatable film to the starting ends of the arch with snap rings; S3. The operator stands on the arch and pushes the film laying equipment forward at the same time. During the film laying process of the film laying roller (3), the operator unfolds the film in real time so that the double-layer air-filled film can be smoothly laid on the arch. S4. After the entire arch is covered with membrane, cut the inflatable membrane to form the end of the inflatable membrane, and tighten the inflatable membrane on the arch by external tightening rollers. S5. After the inflatable membrane is tightened, the operator uses the operating platform and operating window of the membrane laying equipment to fix the inflatable membrane. The fixing points include the top of the arch, the lowest point of the arch, the middle point on the side of the arch, and the fixing points around the skylight. S6. After both layers of inflatable membrane are fixed, use hoisting equipment to transport the membrane laying equipment to the arch of the next span.

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