Boiler steel frame installation device and installation process

Abstract

The present application relates to the technical field of boiler installation, and in particular to a boiler steel frame installation device and installation process, comprising a support mechanism and a lifting mechanism; the lifting mechanism comprises a lifting assembly and a mounting frame, and the lifting assembly is slidably connected to the mounting frame; two groups of support mechanisms are symmetrically arranged about the vertical plane where the mounting frame is located, and the support mechanism comprises a fixing frame and a plurality of supporting round rods; the plurality of supporting round rods are arranged in a matrix manner along the height direction and the horizontal direction, and the spacing between each two adjacent supporting round rods is equal; the mounting frame is detachably connected to the supporting round rods, and can be rotated with two coaxial supporting round rods as the rotation axis to achieve position change; the designed boiler steel frame installation device facilitates the position change of the mounting frame through the cooperation of the supporting round rods and the mounting frame, so as to reduce the installation delay caused by the shaking of the lifting rope, increase the maximum weight of the unitized installation module, reduce the number of lifting times, and comprehensively reduce the installation and construction cost of the boiler steel frame.

Description

Technical Field

[0001] The present application relates to the technical field of boiler installation, and in particular to a boiler steel frame installation device and installation process. Background Art

[0002] A boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electrical energy in the fuel, and the boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. The current boiler steel frame of a power plant is under construction. According to the hoisting content, it is generally divided into two parts: one is the steel structure of the boiler steel frame, and the other is the equipment, platform escalator and other structures carried on the steel frame.

[0003] Patent document No. 201710724418.0 discloses a construction method for layered hoisting of a boiler, which includes installing the boiler steel frame in layers after construction preparation is completed, and pre-storing the cold primary air duct, and / or hot primary air duct, and / or cold primary air duct, and / or hot secondary air duct, and / or air preheater, and / or denitrification outlet flue, and / or burnout air duct, and / or denitrification reactor shell during the installation of each layer of the steel frame.

[0004] Regarding the above-mentioned related technologies, the inventor believes that the designed construction method for layered lifting of the boiler requires the use of large-scale lifting equipment during actual construction due to the weight of the frame components. However, when the large-scale lifting equipment is used to install the steel frame of the lower layer, it will take a long time to adjust the installation position due to shaking caused by the long slings, which makes the use efficiency of the large-scale lifting equipment low and leads to high installation and construction costs of the boiler steel frame. Summary of the Invention

[0005] In order to reduce the installation and construction cost of the boiler steel frame, the present application provides a boiler steel frame installation device and installation process, which adopts the following technical solutions:

[0006] In a first aspect, the present application provides a boiler steel frame installation device, which adopts the following technical solution:

[0007] A boiler steel frame installation device comprises two sets of support mechanisms and at least two sets of lifting mechanisms;

[0008] The hoisting mechanism includes a hoisting assembly and a mounting frame, and the hoisting assembly is slidably connected to the mounting frame;

[0009] The two groups of support mechanisms are symmetrically arranged about the vertical plane where the mounting frame is located, and the support mechanism includes a fixing frame and a plurality of supporting round rods;

[0010] The plurality of support round rods are arranged in a matrix along the height direction and the horizontal direction. The support round rods are horizontally and vertically connected to the fixing frame, and the distance between every two adjacent support round rods is equal.

[0011] The mounting bracket is detachably connected to the supporting round rod and can be rotated with two coaxial supporting round rods as rotation axes to achieve position change.

[0012] By adopting the above technical solution, the support mechanism is pre-installed and the assembly of the unitized installation module is completed, and one group of installation frames is rotated by using the supporting round rod as the rotation axis until the installation frame moves to the lifting position, and then the other group of installation frames is moved to the top of the unitized installation module in the same adjustment manner, and the unitized installation module is lifted by the first group of lifting components located above the unitized installation module placement position, and the second group of lifting components located above the unitized installation module installation position moves synchronously until the unitized installation module is higher than the current installed boiler steel frame floor height, wherein the slings of the second group of lifting components are kept relaxed; the slings of the second group of lifting components located above the unitized installation module installation position begin to apply force, and at the same time, the slings of the first group of lifting components located above the unitized installation module placement position are gradually relaxed until the unitized installation module moves to the top of the installation position, and then The unitized installation module is lowered onto the installed boiler steel frame, and then the unitized installation module is lowered vertically; after precise positioning, the installation and fixation of the unitized installation module are completed, and the above operations are repeated until all the boiler steel frames are installed; the designed boiler steel frame installation device facilitates the lifting of the unitized installation module through the lifting components, facilitates the installation of the lifting components through the installation frame, facilitates the fixation of the supporting round rods through the fixing frame, and facilitates the position change of the installation frame through the cooperation of the supporting round rods and the installation frame, and then selects the appropriate height for lifting according to the installation floor height of the steel frame to reduce the installation delay caused by the shaking of the lifting cable, and the installation frame can also cooperate with the support mechanism on both sides to form a stable H-shaped structure to improve the lifting safety. Furthermore, it can also increase the maximum weight of the unitized installation module, reduce the number of lifting times, and comprehensively reduce the installation and construction cost of the boiler steel frame.

[0013] Optionally, the mounting frame includes a mounting plate and two rotating rods;

[0014] The two rotating rods are respectively connected to opposite sides of the mounting plate, and the distance between the two rotating rods is equal to the distance between the two supporting round rods;

[0015] Both ends of the rotating rod in the length direction are slidably connected with plug sleeves, and the plug sleeve away from the end of the rotating rod can be sleeved on the supporting round rod;

[0016] The plug-in sleeve is connected with an anti-dropping piece for keeping the plug-in sleeve and the rotating rod relatively stationary.

[0017] By adopting the above technical solution, when rotating the mounting frame, force is first applied to the plug-in sleeve so that the plug-in sleeve on the rotating rod serving as the rotating axis is simultaneously sleeved on the rotating rod and the supporting round rod, and the plug-in sleeve on the other rotating rod is retracted from the supporting round rod, and then force is applied to the mounting plate until the plug-in sleeve on the rotating rod detached from the supporting round rod is coaxial with the other adjacent supporting round rod, force is applied to the plug-in sleeve and the anti-slip part is adjusted so that the plug-in sleeve is simultaneously sleeved on the rotating rod and the supporting round rod and keeps the position fixed; the designed mounting frame facilitates the installation of lifting components through the mounting plate, and facilitates the overall position change of the mounting frame through the cooperation of the rotating rod, the anti-slip part and the supporting round rod, thereby matching different installation layer heights and different unit installation module placement positions, and facilitates the prevention of detachment during rotation and lifting through the anti-slip part, which can improve the lifting safety.

[0018] Optionally, the anti-slip member includes an anti-slip bolt;

[0019] The anti-drop bolt is threadedly connected to the plug-in sleeve;

[0020] The rotating rod is provided with two anti-drop holes for inserting the anti-drop bolts, and the two anti-drop holes are distributed along the length direction of the rotating rod. When the anti-drop bolts are inserted into the anti-drop holes close to the supporting round rod, the plug-in sleeve is simultaneously sleeved on the rotating rod and the supporting round rod.

[0021] By adopting the above technical solution, when the overall position of the mounting bracket needs to be changed, the anti-slip bolt is turned to disengage the anti-slip bolt on one rotating rod from the anti-slip hole close to the supporting round rod, and then force is applied to the anti-slip bolt, and the anti-slip bolt drives the plug-in sleeve to move along the axial direction of the supporting round rod until the plug-in sleeve is no longer sleeved on the supporting round rod, and force is applied to the rotating rod, and the rotating rod rotates through the mounting plate with the other rotating rod as the rotation axis, thereby completing the overall position change of the mounting bracket; the designed anti-slip component facilitates the position fixation of the plug-in sleeve through the anti-slip bolt, thereby improving the safety of the rotation and lifting process.

[0022] Optionally, the fixing frame includes a mounting seat, a plurality of vertical rods and a plurality of walking horizontal boards;

[0023] A plurality of vertical rods are vertically connected to the mounting base, and the supporting round rod is connected to one side of the vertical rod;

[0024] The walking horizontal board is arranged horizontally, and the walking horizontal board is connected to a side of the plurality of vertical rods away from the supporting round rods;

[0025] A ladder is detachably connected between two adjacent walking horizontal boards.

[0026] By adopting the above technical solution, the fixed frame is designed, which facilitates the installation of vertical rods through the mounting seat, facilitates the installation of supporting round rods and walking cross boards through the vertical rods, facilitates the staff to walk through the walking cross boards to adjust the anti-slip parts and realize the position change of the mounting frame through the walking cross boards, and facilitates the staff to move back and forth between walking cross boards at different heights through the ladder.

[0027] Optionally, a reinforcing rod is further included, the bottom wall of the walking cross board is detachably connected to the horizontal section of the reinforcing rod, and the vertical rod is detachably connected to the vertical section of the reinforcing rod.

[0028] By adopting the above technical solution, the reinforcing rod is designed to improve the structural stability of the walking cross board.

[0029] Optionally, the vertical rod includes a base section and multiple splicing sections, one end of the base section is connected to the mounting seat, and the other end is detachably connected to the splicing section, two adjacent splicing sections are plugged in, and the vertical section of the reinforcing rod is also detachably connected to two adjacent splicing sections.

[0030] By adopting the above technical solution, the vertical rod formed by plugging multiple splicing sections can realize the overall disassembly of the fixing frame, which is convenient for transportation, and the number of splicing sections can be adjusted according to the installation height of the boiler.

[0031] In a second aspect, the present application discloses a boiler steel frame installation process, comprising the following installation steps:

[0032] S1: Frame installation and component pre-assembly: According to the installation position of the boiler steel frame, select a suitable location to install the fixing frame, where the supporting round rods are pre-installed on the fixing frame according to the preset position, and the steel frame parts are assembled into a unitized installation module;

[0033] S2: Position adjustment: According to the placement position and installation position of the unitized installation module, the installation frame is rotated with the supporting round rod as the rotation axis, wherein the rotation is performed alternately counterclockwise and clockwise until the installation frame moves to the hanging position;

[0034] S3: Lifting and positioning: At least two lifting components cooperate to lift the unitized installation module from the placement position to the installation position, and then install and fix it after positioning and alignment;

[0035] S4: Adjust layer by layer: Repeat steps S2 and S3 until all boiler steel frames are installed.

[0036] By adopting the above technical solution, the staff selects an appropriate number of steel frame parts according to the maximum load capacity of the installation device to assemble them into a unitized installation module, and places the unitized installation module on the placement position. At the same time, according to the installation position of the boiler steel frame, a suitable position is selected to install the fixing frame, wherein the supporting round rod is pre-installed on the fixing frame according to the preset position; then, according to the placement position and installation position of the unitized installation module, the installation frame is rotated with the supporting round rod as the rotation axis until the installation frame moves to the lifting position, wherein the rotation is performed alternately clockwise and counterclockwise until the installation frame moves to the lifting position; then, at least two lifting assemblies are used to collaboratively lift the unitized installation module from the placement position to the installation position, and after positioning and alignment, it is installed and fixed, and then steps S2 and S3 are repeated until the boiler steel frame is completely installed; through the above installation process, the number of lifting times can be reduced by increasing the weight of the unitized module, and the height of the lifting assembly can be adjusted according to the lifting layer height, thereby reducing the shaking caused by the excessive length of the sling, speeding up the installation progress, and at the same time, reducing the time occupied by large lifting equipment, and comprehensively reducing the installation and construction cost of the boiler steel frame.

[0037] Optionally, the S3 step includes:

[0038] S31: Height lifting: The unitized installation module is lifted by a first set of lifting assemblies located above the unitized installation module placement position, and a second set of lifting assemblies located above the unitized installation module installation position moves synchronously until the unitized installation module is higher than the floor height of the currently installed boiler steel frame, wherein the lifting ropes of the second set of lifting assemblies remain in a relaxed state;

[0039] S32: Horizontal positioning: The lifting cables of the second set of lifting components located above the installation position of the unitized installation module begin to apply force, and at the same time, the lifting cables of the first set of lifting components located above the placement position of the unitized installation module are gradually relaxed until the unitized installation module moves to the position directly above the installation position, and then the unitized installation module is lowered onto the installed boiler steel frame;

[0040] S33: Positioning installation: Accurately adjust the position of the unitized installation module, and then install and fix it.

[0041] By adopting the above technical solution, the unitized installation module is lifted by the first group of lifting components located above the unitized installation module placement position, and the second group of lifting components located above the unitized installation module installation position moves synchronously until the unitized installation module is higher than the floor height of the currently installed boiler steel frame, wherein the lifting cables of the second group of lifting components remain relaxed; then the lifting cables of the second group of lifting components located above the unitized installation module installation position begin to apply force, and at the same time, the lifting cables of the first group of lifting components located above the unitized installation module placement position are gradually relaxed until the unitized installation module moves to directly above the installation position, and then the unitized installation module is lowered onto the installed boiler steel frame; finally, the position of the unitized installation module is precisely adjusted and installed and fixed; through the above installation process, the unitized installation module can be lifted from the placement position to the installation position.

[0042] In summary, this application includes at least one of the following beneficial technical effects:

[0043] 1. The designed boiler steel frame installation device facilitates the lifting of the unitized installation module through the lifting assembly, facilitates the installation of the lifting assembly through the installation frame, facilitates the fixation of the supporting round rod through the fixing frame, and facilitates the position change of the installation frame through the cooperation of the supporting round rod and the installation frame. Then, the appropriate height is selected for lifting according to the installation floor height of the steel frame to reduce the installation delay caused by the shaking of the lifting cable. In addition, the installation frame can also cooperate with the support mechanisms on both sides to form a stable H-shaped structure, thereby improving the lifting safety. Furthermore, it can also increase the maximum weight of the unitized installation module, reduce the number of lifting times, and comprehensively reduce the installation and construction cost of the boiler steel frame.

[0044] 2. The designed boiler steel frame installation device facilitates the installation of lifting components through the installation plate. The cooperation of the rotating rod, anti-dropping parts and supporting round rods facilitates the overall position change of the installation frame, thereby matching different installation layer heights and different unitized installation module placement positions. The anti-dropping parts are used to prevent detachment during rotation and lifting, which can improve the lifting safety.

[0045] 3. The designed boiler steel frame installation device can realize the overall disassembly of the fixing frame through the vertical rods formed by plugging multiple splicing sections, which is convenient for transportation, and the number of splicing sections can be adjusted according to the installation height of the boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic diagram of the overall structure of a boiler steel frame installation device according to an embodiment of the present application;

[0047] Figure 2 is a partial structural diagram of a fixing frame according to an embodiment of the present application;

[0048] Figure 3It is a partial structural diagram of the lifting mechanism of an embodiment of the present application;

[0049] Figure 4 yes Figure 3 Schematic diagram from another angle.

[0050] Figure numerals: 1. Support mechanism; 11. Fixed frame; 111. Mounting seat; 112. Vertical rod; 1121. Basic section; 1122. Splicing section; 113. Walking cross board; 114. Ladder; 12. Support round rod; 2. Hoisting mechanism; 21. Hoisting assembly; 22. Mounting frame; 221. Mounting plate; 222. Rotating rod; 2221. Anti-drop hole; 223. Plug-in sleeve; 224. Anti-drop part; 2241. Anti-drop bolt; 3. Reinforcement rod. DETAILED DESCRIPTION

[0051] The following is combined with Figure 1-4 This application is described in further detail.

[0052] The embodiments of the present application disclose a boiler steel frame installation device and installation process.

[0053] In a first aspect, an embodiment of the present application discloses a boiler steel frame installation device.

[0054] Reference Figure 1 、 Figure 2 as well as Figure 3 A boiler steel frame installation device includes two groups of support mechanisms 1 and at least two groups of lifting mechanisms 2. The lifting mechanisms 2 include a lifting assembly 21 and a mounting frame 22. The lifting assembly 21 is slidably connected to the mounting frame 22. The two groups of support mechanisms 1 are symmetrically arranged about the vertical plane where the mounting frame 22 is located. The support mechanism 1 includes a fixed frame 11 and a plurality of supporting round rods 12. The plurality of supporting round rods 12 are arranged in a matrix manner along the height direction and the horizontal direction, and the supporting round rods 12 are horizontally connected to the fixed frame 11. The spacing between each adjacent two supporting round rods 12 is equal; the mounting frame 22 is detachably connected to the supporting round rods 12, and can realize position change with two coaxially arranged supporting round rods 12 as the rotation axis; the number of lifting mechanisms 2 in this embodiment is two groups.

[0055] Reference Figure 1 and Figure 2The fixing frame 11 includes a mounting seat 111, multiple vertical rods 112 and multiple walking cross plates 113. The multiple vertical rods 112 are vertically welded to the mounting seat 111, and the multiple vertical rods 112 are distributed along the length direction of the mounting seat 111. The vertical rod 112 includes a basic section 1121 and multiple splicing sections 1122. One end of the basic section 1121 is welded to the mounting seat 111, and the other end is plugged into a splicing section 1122. The splicing section 1122 is welded to one end of the supporting round rod 12. One end of the splicing section 1122 is integrally connected with a reduced diameter area, and the other end is provided with a plug-in hole for inserting the reduced diameter area of ​​an adjacent splicing section 1122. The two adjacent splicing sections 1122 are connected by plugging.

[0056] Reference Figure 1 and Figure 2 The walking cross board 113 is arranged horizontally, and the walking cross board 113 is bolted to multiple splicing sections 1122 in the same horizontal interval at the same time, and the walking cross board 113 is located on the side of the splicing section 1122 away from the supporting round rod 12; in order to facilitate the movement of staff between two adjacent walking cross boards 113, a ladder 114 is bolted between the two adjacent walking cross boards 113; in order to improve the safety of the staff, a guardrail is bolted to the walking cross board 113.

[0057] Reference Figure 1 and Figure 2 In order to achieve the connection stability of the two adjacent splicing sections 1122 and the connection stability of the walking cross board 113, a reinforcing rod 3 is also included. The bottom wall of the walking cross board 113 is bolted to the horizontal section of the reinforcing rod 3, and the vertical section of the reinforcing rod 3 is bolted to the two adjacent splicing sections 1122 at the same time; the base section 1121 and the splicing section 1122 are connected through the vertical section of the reinforcing rod 3.

[0058] Reference Figure 1 、 Figure 3 as well as Figure 4 The mounting frame 22 includes a mounting plate 221 and two rotating rods 222. The two rotating rods 222 are respectively welded to opposite sides of the mounting plate 221, and the spacing between the two rotating rods 222 is equal to the spacing between the two supporting round rods 12. The axial direction of the rotating rod 222 is consistent with the axial direction of the supporting round rod 12.

[0059] Reference Figure 3 and Figure 4, both ends of the rotating rod 222 in the length direction are slidably connected with the plug sleeve 223, and after the plug sleeve 223 moves along the axial direction of the rotating rod 222, the end away from the rotating rod 222 can be sleeved on the supporting round rod 12; in order to achieve the position fixation of the plug sleeve 223, the plug sleeve 223 is connected with an anti-slip part 224, and the anti-slip part 224 includes an anti-slip bolt 2241, which is bolted to the plug sleeve 223, and the rotating rod 222 is fixed. There are two anti-drop holes 2221 for inserting the anti-drop bolt 2241, and the two anti-drop holes 2221 are distributed along the length direction of the rotating rod 222. When the anti-drop bolt 2241 is inserted into the anti-drop hole 2221 close to the supporting round rod 12, the plug-in sleeve 223 is simultaneously sleeved on the rotating rod 222 and the supporting round rod 12. When the anti-drop bolt 2241 is inserted into the anti-drop hole 2221 away from the supporting round rod 12, the plug-in sleeve 223 is separated from the supporting round rod 12.

[0060] Reference Figure 3 and Figure 4 The hoisting assembly 21 includes a winch, a sling and a slide rail. The length direction of the slide rail is consistent with the axial direction of the rotating rod 222. The slide rail is welded to the mounting plate 221. The winch can slide on the slide rail, and the sling is wound and connected to the winch.

[0061] The implementation principle of a boiler steel frame installation device in an embodiment of the present application is: the assembly of the unitized installation module is completed in advance, and the mounting seat 111, the splicing section 1122, the reinforcing rod 3, the walking cross plate 113, etc. are assembled into a whole by bolts, and then according to the placement position of the unitized installation module, a group of mounting frames 22 are rotated by using the supporting round rod 12 as the rotation axis until the mounting frames 22 are moved to the hoisting position, and then the other group of mounting frames 22 are moved to the top of the unitized installation module in the same adjustment method.

[0062] When rotating, first tighten the anti-detachment bolt 2241 so that the anti-detachment bolt 2241 on one rotating rod 222 disengages from the anti-detachment hole 2221 close to the supporting round rod 12, and then apply force to the anti-detachment bolt 2241, and the anti-detachment bolt 2241 drives the plug-in sleeve 223 to move along the axial direction of the supporting round rod 12 until the plug-in sleeve 223 is no longer sleeved on the supporting round rod 12, and apply force to the rotating rod 222, and the rotating rod 222 rotates through the mounting plate 221 with the other rotating rod 222 as the rotation axis, completing the overall position change of the mounting frame 22, and during the change, the mounting frame 22 rotates clockwise and counterclockwise alternately.

[0063] The unitized installation module is lifted by the first set of lifting components 21 located above the unitized installation module placement position, and the second set of lifting components 21 located above the unitized installation module installation position moves synchronously until the unitized installation module is higher than the floor height of the currently installed boiler steel frame, wherein the lifting ropes of the second set of lifting components 21 remain in a relaxed state.

[0064] The lifting ropes of the second set of lifting components 21 located above the installation position of the unitized installation module begin to apply force, and at the same time, the lifting ropes of the first set of lifting components 21 located above the placement position of the unitized installation module are gradually relaxed until the unitized installation module moves to just above the installation position, and then the unitized installation module is lowered onto the installed boiler steel frame, and then the unitized installation module is lowered vertically; after precise positioning, the installation and fixation of the unitized installation module are completed, and the above operations are repeated until the boiler steel frame is completely installed.

[0065] In a second aspect, the present application discloses a boiler steel frame installation process, including the following installation steps:

[0066] S1: Frame installation and component pre-assembly: According to the installation position of the boiler steel frame, select a suitable position to install the fixing frame 11, wherein the supporting round rods 12 are pre-installed on the fixing frame 11 according to the preset position, and the steel frame parts are assembled into a unitized installation module;

[0067] S2: Position adjustment: According to the placement position and installation position of the unitized installation module, the mounting frame 22 is rotated with the supporting rod 12 as the rotation axis, wherein the rotation is performed alternately counterclockwise and clockwise until the mounting frame 22 moves to the hanging position;

[0068] S3: Lifting and positioning: At least two lifting assemblies 21 cooperate to lift the unitized installation module from the placement position to the installation position, and then install and fix it after positioning and alignment;

[0069] S31: Height lifting: The unitized installation module is lifted by the first set of lifting assemblies 21 located above the unitized installation module placement position, and the second set of lifting assemblies 21 located above the unitized installation module installation position moves synchronously until the unitized installation module is higher than the floor height of the currently installed boiler steel frame, wherein the lifting ropes of the second set of lifting assemblies 21 remain in a relaxed state;

[0070] S32: Horizontal positioning: The lifting ropes of the second set of lifting assemblies 21 located above the installation position of the unitized installation module begin to apply force, and at the same time, the lifting ropes of the first set of lifting assemblies 21 located above the placement position of the unitized installation module are gradually loosened until the unitized installation module moves to the position directly above the installation position, and then the unitized installation module is lowered onto the installed boiler steel frame;

[0071] S33: Positioning and installation: Accurately adjust the position of the unitized installation module and then install and fix it;

[0072] S4: Adjust layer by layer: Repeat steps S2 and S3 until all boiler steel frames are installed.

[0073] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A boiler steel frame installation device, characterized in that: It comprises two sets of supporting mechanisms (1) and at least two sets of lifting mechanisms (2); The hoisting mechanism (2) comprises a hoisting assembly (21) and a mounting frame (22), wherein the hoisting assembly (21) is slidably connected to the mounting frame (22); The two groups of support mechanisms (1) are symmetrically arranged about the vertical plane where the mounting frame (22) is located, and the support mechanism (1) includes a fixing frame (11) and a plurality of supporting round rods (12); The plurality of supporting round rods (12) are arranged in a matrix along the height direction and the horizontal direction, the supporting round rods (12) are horizontally and vertically connected to the fixing frame (11), and the distance between each two adjacent supporting round rods (12) is equal; The mounting frame (22) is detachably connected to the supporting round rod (12) and can be rotated with two coaxial supporting round rods (12) as rotation axes to achieve position change; the mounting frame (22) includes a mounting plate (221) and two rotating rods (222); The two rotating rods (222) are respectively connected to opposite sides of the mounting plate (221), and the distance between the two rotating rods (222) is equal to the distance between the two supporting round rods (12); Both ends of the rotating rod (222) in the length direction are slidably connected with plug sleeves (223), and the end of the plug sleeve (223) away from the rotating rod (222) can be sleeved on the supporting round rod (12); The plug-in sleeve (223) is connected to an anti-slip component (224) for keeping the plug-in sleeve (223) and the rotating rod (222) relatively stationary.

2. The boiler steel frame installation device according to claim 1, characterized in that: The anti-slip component (224) includes an anti-slip bolt (2241); The anti-drop bolt (2241) is threadedly connected to the plug-in sleeve (223); The rotating rod (222) is provided with two anti-slip holes (2221) for inserting the anti-slip bolts (2241). The two anti-slip holes (2221) are distributed along the length direction of the rotating rod (222). When the anti-slip bolts (2241) are inserted into the anti-slip holes (2221) close to the supporting round rod (12), the plug-in sleeve (223) is simultaneously sleeved on the rotating rod (222) and the supporting round rod (12).

3. The boiler steel frame installation device according to claim 1, characterized in that: The fixing frame (11) includes a mounting seat (111), a plurality of vertical rods (112) and a plurality of walking horizontal boards (113); A plurality of vertical rods (112) are vertically connected to the mounting seat (111), and the supporting round rod (12) is connected to one side of the vertical rod (112); The walking horizontal board (113) is arranged horizontally, and the walking horizontal board (113) is connected to a side of the plurality of vertical rods (112) away from the supporting round rods (12); A ladder (114) is detachably connected between two adjacent walking horizontal boards (113).

4. The boiler steel frame installation device according to claim 3, characterized in that: It also includes a reinforcing rod (3), the bottom wall of the walking cross plate (113) is detachably connected to the horizontal section of the reinforcing rod (3), and the vertical rod (112) is detachably connected to the vertical section of the reinforcing rod (3).

5. The boiler steel frame installation device according to claim 4, characterized in that: The vertical rod (112) comprises a base section (1121) and a plurality of splicing sections (1122); one end of the base section (1121) is connected to the mounting seat (111), and the other end is detachably connected to the splicing section (1122); two adjacent splicing sections (1122) are plugged in, and the vertical section of the reinforcing rod (3) is detachably connected to two adjacent splicing sections (1122) at the same time.

6. A boiler steel frame installation process, characterized in that: The boiler steel frame installation device according to any one of claims 1 to 5 is used, and the installation steps include: S1: Frame installation and component pre-assembly: According to the installation position of the boiler steel frame, a suitable position is selected to install the fixing frame (11), wherein the supporting round rod (12) is pre-installed on the fixing frame (11) according to the preset position, and the steel frame parts are assembled into a unitized installation module; S2: Position adjustment: according to the placement position and installation position of the unitized installation module, the mounting frame (22) is rotated with the supporting rod (12) as the rotation axis, wherein the rotation is alternately performed in counterclockwise and clockwise directions until the mounting frame (22) moves to the hanging position; S3: Lifting and positioning: at least two lifting assemblies (21) cooperate to lift the unitized installation module from the placement position to the installation position, and then install and fix it after positioning and alignment; S4: Adjust layer by layer: Repeat steps S2 and S3 until all boiler steel frames are installed.

7. The boiler steel frame installation process according to claim 6, characterized in that: The S3 step includes: S31: Height lifting: the unitized installation module is lifted by a first set of lifting components (21) located above the unitized installation module placement position, and a second set of lifting components (21) located above the unitized installation module installation position moves synchronously until the unitized installation module is higher than the floor height of the currently installed boiler steel frame, wherein the lifting ropes of the second set of lifting components (21) remain in a relaxed state; S32: Horizontal positioning: the slings of the second set of hoisting components (21) located above the installation position of the unitized installation module begin to apply force, and at the same time, the slings of the first set of hoisting components (21) located above the placement position of the unitized installation module are gradually relaxed until the unitized installation module moves to the position just above the installation position, and then the unitized installation module is lowered onto the installed boiler steel frame; S33: Positioning installation: Accurately adjust the position of the unitized installation module, and then install and fix it.

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