A device and method for integral lifting of electromechanical modules in narrow spaces

Abstract

This invention belongs to the field of electromechanical module hoisting technology, specifically relating to a device and method for lifting electromechanical modules in confined spaces. The device includes a base frame, a lifting mechanism, and a lifting frame. The lifting mechanism is mounted on the base frame, with one end of the lifting frame connected to the working end of the lifting mechanism and the other end extending cantilevered upwards from the base frame. An electric hoist for connecting the electromechanical module is arranged on the lifting frame. The lifting frame has a U-shaped opening at the cantilevered end, allowing the electromechanical module to reach the building's roof slab through the U-shaped opening when lifted by the electric hoist. Through the U-shaped opening design and horizontal withdrawal mechanism of the lifting frame, after the electromechanical module is lifted to the roof slab and fixed, the lifting frame can be horizontally withdrawn from the installed module, and the electric hoist moves away from the confined area along with the lifting frame, eliminating the need for disassembly within the gap. This completely eliminates the need for wall excavation and repair, avoids structural damage, shortens the construction period, and reduces labor and material costs.

Description

Technical Field

[0001] This invention belongs to the field of electromechanical module hoisting technology, specifically relating to an overall lifting device and method for electromechanical modules in narrow spaces. Background Technology

[0002] The hoisting of large electromechanical modules (such as air conditioning units, duct assemblies, and piping modules) in confined spaces like building corridors presents unique challenges due to space constraints. The commonly used technical solution involves pre-installing multiple independent electric hoists on the corridor ceiling and securing them to anchors. Once the electromechanical module is transported below its installation location, these electric hoists are used to lift and install it into its designated position.

[0003] However, this method has significant drawbacks. Due to the limited width of the corridor, the gap between the side wall and the walls on both sides after the electromechanical module is installed is usually very narrow (often only about 20cm). This results in minimal operating space between adjacent electromechanical modules or between the module and the wall. When it is necessary to remove the electric hoist used to lift the module (especially the hoist located between modules or close to the wall), it is difficult for operators to perform safe and efficient disassembly within such a narrow gap.

[0004] To solve the aforementioned dismantling difficulties, the common practice is to chisel a working opening in the side wall of the corridor. Operators then enter the narrow gap through this opening to dismantle the electric hoist. While this method solves the problem, it adds two extra construction steps: chiseling the wall and repairing it later. Chiseling the opening causes some damage to the wall structure; the opening and repair work prolongs the overall construction period; and it increases labor, material, and equipment costs.

[0005] Therefore, it is necessary to develop an integrated lifting device and method for electromechanical modules suitable for narrow spaces. This device and method can ensure the safe and efficient lifting and installation of electromechanical modules while completely avoiding the cumbersome process of drilling construction holes in the wall. It can also solve the problem of disassembling electric hoists in narrow gaps, thereby improving construction efficiency, ensuring structural integrity, and reducing project costs and risks. Summary of the Invention

[0006] This invention aims to solve the problem of the difficulty in disassembling electric hoists used for hoisting after installing electromechanical modules in narrow corridors within confined spaces.

[0007] This invention provides the following technical solution: a lifting device for an electromechanical module in a narrow space, comprising a base frame, a lifting mechanism, and a lifting frame; the lifting mechanism is mounted on the base frame, one end of the lifting frame is connected to the working end of the lifting mechanism, and the other end extends cantilevered above the base frame; an electric hoist for connecting the electromechanical module is arranged on the lifting frame; the lifting frame has a U-shaped opening located at the cantilevered end, so that when the electromechanical module is lifted by the electric hoist, it can reach the building roof through the U-shaped opening of the lifting frame.

[0008] Furthermore, the lifting frame includes two supporting cantilever arms. One end of each supporting cantilever arm is fixed to the working end of the lifting mechanism, and the other end extends cantilevered above the base frame. A crossbeam connects the fixed ends of the two supporting cantilever arms. An electric hoist is arranged at the cantilever end of each supporting cantilever arm, and an electric hoist is arranged in the center of the crossbeam.

[0009] Furthermore, the lifting mechanism includes two lifting units. Each lifting unit includes a column, a lead screw, a slider, and a torque output module. The column has a vertical guide groove, and the lead screw is installed in the vertical guide groove. The upper and lower ends of the lead screw are connected to the rotating seat in the column. The slider is threadedly engaged with the lead screw and slidably engaged with the vertical guide groove. The support cantilever is fixedly connected to the slider. The lower end of the lead screw of one of the lifting units is connected to a first bevel gear, and the second bevel gear on the torque output module meshes with the first bevel gear. The lead screws of the two lifting units rotate synchronously through pulleys and belt drives.

[0010] Furthermore, the cavity of the base frame is equipped with two sets of top support mechanisms that extend to the left and right sides, and the two sets of top support mechanisms are arranged one in front of the other.

[0011] The top support mechanism includes a middle frame, with a top support module connected to each side of the middle frame; a rotatable bidirectional lead screw is installed inside the middle frame, with a toothed pulley in the middle and screws with opposite directions of rotation on both sides of the bidirectional lead screw; the toothed pulleys in the two top support mechanisms are connected to the torque transmission module through a toothed belt;

[0012] The top support module includes a guide rail, a pressure plate, and a sliding frame. The sliding frame is slidably assembled on the intermediate frame and is screwed into the screw thread of the double-acting lead screw. The guide rail is located on the left and right sides of the intermediate frame. A slide rod is slidably inserted into the guide rail. The pressure plate is connected to the front end of the slide rod. The pressure plate and the sliding frame are connected by a push rod.

[0013] Furthermore, the torque transmission module includes a third bevel gear, a fourth bevel gear, an input toothed pulley, and an intermediate shaft; the third bevel gear is coaxially mounted on the lead screw with the first bevel gear; the intermediate shaft is mounted on a bearing seat inside the base frame, the fourth bevel gear and the input toothed pulley are coaxially mounted on the intermediate shaft, the fourth bevel gear meshes with the third bevel gear, and the input toothed pulley and the toothed pulleys in the two sets of top support mechanisms are connected by toothed belts.

[0014] Furthermore, the input toothed pulley and one of the toothed pulleys are located at both ends of the toothed belt, and the other toothed pulley is located in the middle of the toothed belt. Rollers are installed on the top and bottom surfaces of the toothed belt on the sliding frame where the toothed pulley is located. The toothed belt is constrained between the rollers and the toothed pulley to ensure that the toothed belt fully meshes with the toothed pulley.

[0015] Furthermore, an auxiliary mechanism is installed on the top surface of the base frame, which includes a drag module and a ramp plate that overlaps between the drag module and the ground.

[0016] The drag module includes a support plate, a drag screw, and a drag claw. The top surface of the support plate has a straight groove, and the drag screw is rotatably installed in the straight groove. One end of the drag screw is connected to the drag drive motor. The drag claw slides in contact with the top surface of the support plate and is fixedly connected to the screw nut on the drag screw.

[0017] Furthermore, the top surface of the support plate has a slot, and the bottom surface of the ramp plate has a locking strip that engages with the slot.

[0018] Furthermore, a diagonal bracing beam is connected between the lower part of the cantilever and the working end of the lifting mechanism.

[0019] A method for lifting an electromechanical module in a confined space, comprising the steps described above using a confined space electromechanical module lifting device:

[0020] S1: The overall lifting device for the electromechanical module in a narrow space is positioned at the installation location of the electromechanical module. The top support mechanism unfolds and supports the two side walls. The lifting frame is raised to contact the roof of the building and is fitted outside the installation location of the electromechanical module.

[0021] S2: Use a flatbed trailer to move the electromechanical module to the front of the ramp. Connect the drag claw of the drag module to the flatbed trailer and drag the electromechanical module to the installation position below it.

[0022] S3: The electric hoist lowers its hook and connects it to the lifting point on the side of the electromechanical module. The lifting point is located in the upper part of the electromechanical module.

[0023] S4: The three electric hoists simultaneously wind up until the top of the electromechanical module contacts the building roof through the U-shaped opening of the lifting frame, fixing the electromechanical module to the building roof and disconnecting the hook from the lifting point;

[0024] S5: The top support mechanism separates from the wall, the lifting frame exits horizontally from the installed electromechanical module, and the overall lifting device of the electromechanical module in the narrow space moves to the installation location of the next electromechanical module.

[0025] Compared with the prior art, the advantages of the present invention are:

[0026] This invention provides a method and mechanism for lifting electromechanical modules in confined spaces. Through the U-shaped design of the lifting frame and a horizontal withdrawal mechanism, after the electromechanical module is lifted to the top plate and fixed, the lifting frame can be horizontally withdrawn from the installed module. The electric hoist moves away from the confined area along with the lifting frame, eliminating the need for disassembly within the gap. This completely eliminates the need for wall excavation and repair, avoids structural damage, shortens the construction period, and reduces labor and material costs.

[0027] The two sets of top support mechanisms built into the base frame drive the sliding frame through bidirectional screws, and together with the push rods push the pressure plate to support the walls on both sides, forming a symmetrical support at both front and rear points, which effectively offsets the overturning moment during the lifting process; the inclined bracing beam under the cantilever further enhances the structural rigidity of the lifting frame and avoids deformation of the cantilever end under stress.

[0028] The lifting frame adopts a cantilevered layout, extending upwards from the base frame to reduce the occupation of ground operating space. The U-shaped opening faces the cantilevered end, ensuring that the electromechanical modules can directly reach the building's roof slab when lifted to the top, avoiding obstruction of the installation path by the lifting frame structure, and perfectly adapting to narrow corridors less than 1.5m wide. The top support mechanism is retractable, allowing the lifting frame to move horizontally with the device when the entire unit is moved horizontally. The entire equipment can be quickly removed from the area where the installed modules are located after installation, without requiring additional operating space.

[0029] This invention enables "wall-hole-free construction" for hoisting electromechanical modules in narrow spaces, significantly improving construction safety, economy, and accuracy, and providing an efficient solution for the installation of electromechanical modules in narrow scenarios such as building corridors and underground pipe galleries. Attached Figure Description

[0030] Figure 1 A schematic diagram of an integrated lifting device for electromechanical modules in a confined space;

[0031] Figure 2 This is a schematic diagram of the base frame and columns;

[0032] Figure 3 This is a schematic diagram of two lifting units;

[0033] Figure 4 This is a schematic diagram of two sets of top support mechanisms;

[0034] Figure 5 This is a schematic diagram of the support mechanism;

[0035] Figure 6 A schematic diagram of the auxiliary mechanism;

[0036] Figure 7 This is a schematic diagram of the drag-and-drop module;

[0037] Figure 8 This is a schematic diagram of a ramp slab;

[0038] Figure 9 A schematic diagram of the operation of the electromechanical module lifting device in a confined space;

[0039] Figure 10 This is a schematic diagram of the lead screw driving the speed reduction transmission to the intermediate shaft.

[0040] In the diagram: 1-Base frame; 1.1-Top support mechanism mounting cavity; 1.2-Torque transmission module mounting position;

[0041] 2-Lifting mechanism; 2.1-Column; 2.2-Lead screw; 2.3-Slider; 2.4-Vertical guide groove; 2.5-First bevel gear; 2.6-Second bevel gear; 2.7-Pulley; 2.8-Belt; 2.9-Motor mounting position; 2.10-Lifting drive motor;

[0042] 3-Lifting frame; 3.1-Supporting cantilever; 3.2-Crossbeam; 3.3-Diagonal bracing beam;

[0043] 4-Electric hoist;

[0044] 5-Electromechanical modules;

[0045] 6-Top support mechanism; 6.1-Intermediate frame; 6.2-Double-direction lead screw; 6.2.1-Toothed pulley; 6.2.2-Screw; 6.3-Pressure plate; 6.4-Sliding frame; 6.5-Slide rod; 6.6-Toothed belt; 6.7-Push rod; 6.8-Third bevel gear; 6.9-Fourth bevel gear; 6.10-Input toothed pulley; 6.11-Intermediate shaft; 6.12-Shaft seat; 6.13-Guide rail; 6.14-Roller;

[0046] 7-Drag module; 7.1-Support plate; 7.2-Drag screw; 7.3-Drag claw; 7.4-Drag drive motor; 7.5-Slot;

[0047] 8-Slope plate; 8.1-Clamping strip;

[0048] 9-Pulley. Detailed Implementation

[0049] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] Example 1

[0051] like Figure 1As shown: A lifting device for an electromechanical module in a narrow space includes a base frame 1, a lifting mechanism 2, and a lifting frame 3; the bottom of the base frame 1 is equipped with pulleys 9, and the entire device can be pushed; the lifting mechanism 2 is installed on the base frame 1, one end of the lifting frame 3 is connected to the working end of the lifting mechanism 2, and the other end extends cantilevered above the base frame 1; an electric hoist 4 for connecting the electromechanical module 5 is arranged on the lifting frame 3; the lifting frame 3 has a U-shaped opening located at the cantilevered end, so that when the electromechanical module 5 is lifted by the electric hoist 4, it can reach the building roof through the U-shaped opening of the lifting frame 3.

[0052] like Figure 2 , Figure 3 As shown: The lifting mechanism 2 includes two lifting units, each comprising a column 2.1, a lead screw 2.2, a slider 2.3, and a torque output module. A vertical guide groove 2.4 is formed on the column 2.1, and the lead screw 2.2 is installed within it. The upper and lower ends of the lead screw 2.2 are connected to a rotating seat in the column 2.1. The slider 2.3 is threadedly engaged with the lead screw 2.2 and slidably engaged with the vertical guide groove 2.4. A support cantilever 3.1 is fixedly connected to the slider 2.3. A first bevel gear 2.5 is connected to the lower end of the lead screw 2.2 in one of the lifting units, and a second bevel gear 2.6 on the torque output module meshes with the first bevel gear 2.5. The lead screws 2.2 of the two lifting units rotate synchronously via pulleys 2.7 and belts 2.8. Utilizing the precision of the lead screw mechanism, rotational motion is converted into linear motion. The vertical guide groove 2.4 on the column 2.1 restricts the movement trajectory of the slider 2.3, ensuring that the slider 2.3 moves only in the vertical direction; the lead screws 2.2 of the two lifting units are connected by pulleys 2.7 and belts 2.8 to achieve synchronous rotation, ensuring that the lifting frame 3 is not skewed during lifting; the torque output module meshes with the first bevel gear 2.5 at the lower end of the lead screw 2.2 through the second bevel gear 2.6, transmitting the power of the torque output module to the lead screw 2.2, driving the slider 2.3 to lift the lifting frame 3. The torque output module uses a lifting drive motor 2.10, and the second bevel gear 2.6 is installed on the output shaft of the lifting drive motor 2.10; the lifting drive motor 2.10 is installed in the motor mounting position 2.9 reserved on the column 2.1.

[0053] like Figure 1As shown: The lifting frame 3 is a cantilevered load-bearing structure. The lifting frame 3 includes two supporting cantilever arms 3.1. One end of the two supporting cantilever arms 3.1 is fixed to the slider 2.3 of the lifting mechanism, and the other end extends cantilevered above the base frame 1. A crossbeam 3.2 is connected between the ends of the two supporting cantilever arms 3.1 and the lifting mechanism 2, forming a U-shaped opening facing the cantilever end. A diagonal brace beam 3.3 is connected between the lower part of the supporting cantilever arm 3.1 and the slider 2.3 of the lifting mechanism 2. In the vertical direction, the diagonal brace beam 3.3 and the supporting cantilever arm 3.1 are aligned. The diagonal brace beam 3.3 does not occupy the lifting space of the electromechanical module 5. An electric hoist 4 is arranged at the cantilever end of each of the two supporting cantilever arms 3.1, and an electric hoist 4 is arranged in the center on the crossbeam 3.2.

[0054] The U-shaped opening design of the lifting frame 3 provides top clearance space for the electromechanical module 5, ensuring that the electromechanical module 5 can directly reach the building roof through the U-shaped opening when lifted to the top, avoiding obstruction of the installation path by the lifting frame 3 structure; the diagonal bracing beam 3.3 forms a triangular stable structure, transferring the cantilever force of the supporting cantilever 3.1 to the slider 2.3, reducing the deflection at the cantilever end and improving the structural rigidity. Three electric hoists 4 are arranged on the lifting frame 3, one at each of the two supporting cantilever ends 3.1 and one in the middle of the crossbeam 3.2, forming a "triangular" distribution. The three-point hoisting achieves balanced force on the electromechanical module 5, preventing the electromechanical module 5 from tilting during the lifting process.

[0055] like Figure 2 , Figure 4 , Figure 5 As shown: The base frame 1 is the supporting foundation of the device. The base frame 1 has a pre-reserved cavity 1.1 for the top support mechanism and a torque transmission module mounting position 1.2. Two sets of top support mechanisms 6 are arranged one in front of the other in the cavity 1.1 of the top support mechanism of the base frame 1. The top support mechanism 6 extends to the left and right sides and uses the wall as a fulcrum to symmetrically support the base frame 1.

[0056] The top support mechanism 6 includes an intermediate frame 6.1, with a top support module connected to each side of the intermediate frame 6.1; a rotatable bidirectional lead screw 6.2 is installed inside the intermediate frame 6.1, with a toothed pulley 6.2.1 in the middle and screws 6.2.2 with opposite directions of rotation on both sides of the bidirectional lead screw 6.2.1; the toothed pulleys 6.2.1 in the two top support mechanisms 6 are connected to the torque transmission module through a toothed belt 6.6;

[0057] The top support module includes a guide rail 6.13, a pressure plate 6.3, and a sliding frame 6.4. The sliding frame 6.4 is slidably mounted on the intermediate frame 6.1. The sliding frame 6.4 is threadedly engaged with the screw 6.2.2 of the double-acting lead screw 6.2. The guide rail 6.13 is located on the left and right sides of the intermediate frame 6.1. A slide rod 6.5 is slidably inserted into the guide rail 6.13. The pressure plate 6.3 is connected to the front end of the slide rod 6.5. The pressure plate 6.3 and the sliding frame 6.4 are connected by a push rod 6.7.

[0058] When the bidirectional lead screw 6.2 rotates, the screws 6.2.2 on both sides with opposite rotation directions drive the left and right sliding frames 6.4 to move synchronously in opposite directions. The horizontal movement of the sliding frame 6.4 is converted into the supporting force of the pressure plate 6.3 through the push rod 6.7, so as to achieve symmetrical support of the walls on both sides. The two sets of supporting mechanisms 6 at the front and rear form a "double-point support plane", which, together with the friction between the pressure plate 6.3 and the wall, effectively counteracts the overturning moment generated during the lifting process.

[0059] like Figure 3 , Figure 4 As shown: The torque transmission module is arranged in the reserved torque transmission module mounting position 1.2 on the base frame 1. The torque transmission module includes a third bevel gear 6.8, a fourth bevel gear 6.9, an input toothed pulley 6.10, and an intermediate shaft 6.11. The third bevel gear 6.8 is coaxially mounted on the lead screw 2.2 with the first bevel gear 2.5. The intermediate shaft 6.11 is mounted on the bearing seat 6.12 inside the base frame 1. The fourth bevel gear 6.9 and the input toothed pulley 6.10 are coaxially mounted on the intermediate shaft 6.11. The fourth bevel gear 6.9 meshes with the third bevel gear 6.8. The input toothed pulley 6.10 and the toothed pulleys 6.2.1 in the two sets of top support mechanisms 6 are connected by a toothed belt 6.6.

[0060] The toothed pulley 6.10 and one of the toothed pulleys 6.2.1 are located at both ends of the toothed belt 6.6, and the other toothed pulley 6.2.1 is located in the middle of the toothed belt 6.6. Rollers 6.14 are mounted on the top and bottom surfaces of the toothed belt 6.6 on the sliding frame 6.4 where the toothed pulley 6.2.1 is located. The toothed belt 6.6 is constrained between the roller 6.14 and the toothed pulley 6.2.1 so that the toothed belt 6.6 and the toothed pulley 6.2.1 are fully engaged.

[0061] The torque transmission module transmits power from the lifting mechanism 2 to the intermediate shaft 6.11 via the third bevel gear 6.8 and the fourth bevel gear 6.9. Then, through the input toothed pulley 6.10 and the toothed belt 6.6, it drives the toothed pulleys 6.2.1 of the two sets of support mechanisms 6 to rotate synchronously, achieving power linkage between lifting and support. The roller 6.14 at the intermediate toothed pulley 6.2.1 limits the toothed belt 6.6 from the top and bottom surfaces, ensuring that the meshing depth between the toothed belt 6.6 and the toothed pulley 6.2.1 is ≥ 2 / 3 of the tooth height, preventing slippage.

[0062] In this embodiment, the stroke of the slider 2.3 on the lead screw 2.2 is greater than the stroke of the sliding bracket 6.4 on the screw 6.2.2 of the bidirectional lead screw 6.2. In the state of coordinated lifting and supporting actions, to balance the stroke difference between the two, this embodiment lists two methods, such as... Figure 10As shown, the first method involves changing the speed ratio between lead screw 2.2 and bidirectional lead screw 6.2. Lead screw 2.2 is driven to rotate by lifting drive motor 2.10. Lead screw 2.2 transmits torque to intermediate shaft 6.11 through the meshing of third bevel gear 6.8 and fourth bevel gear 6.9. Then, intermediate shaft 6.11 drives bidirectional lead screw 6.2 (toothed pulley 6.2.1 meshing with toothed belt 6.6) to rotate through input toothed pulley 6.10 and toothed belt 6.6. When third bevel gear 6.8 is a small gear and fourth bevel gear 6.9 is a large gear, intermediate shaft 6.11 moves at a reduced speed relative to lead screw 2.2. Ultimately, the speed of bidirectional lead screw 6.2 will be less than the speed of lead screw 2.2. Therefore, the moving speed of sliding frame 6.4 is less than the moving speed of slider 2.3. In a unit of time, the stroke of slider 2.3 is greater than the stroke of sliding frame 6.4. The second method involves using different pitches for lead screw 2.2 and the double-acting lead screw 6.2.2. A larger pitch for lead screw 2.2 results in a greater distance moved by slider 2.3 per revolution of lead screw 2.2, and vice versa. Based on this principle, the pitch of lead screw 2.2 is set to be greater than that of the double-acting lead screw 6.2.2. This allows the slider 2.3 on lead screw 2.2 to move a greater distance than the sliding frame 6.4 on lead screw 6.2.2 per unit time.

[0063] like Figure 6 , Figure 7 As shown: An auxiliary mechanism is installed on the top surface of the base frame 1. The auxiliary mechanism includes a drag module 7 and a ramp plate 8 that overlaps between the drag module 7 and the ground.

[0064] The dragging module 7 includes a support plate 7.1, a drag screw 7.2, and a drag claw 7.3. A straight groove is formed on the top surface of the support plate 7.1, and the drag screw 7.2 is rotatably mounted within this groove. One end of the drag screw 7.2 is connected to a drag drive motor 7.4. The drag claw 7.3 slides in contact with the top surface of the support plate 7.1 and is fixedly connected to a screw nut on the drag screw 7.2. A transverse through-slot is formed on the drag claw 7.3, through which a pull rope is threaded to connect the drag claw 7.3 to a flatbed trailer at the bottom of the electromechanical module 5. Utilizing the uniformity and precision of the screw drive, the dragging module 7 enables smooth transport of the electromechanical module 5, and the dragging speed can be adjusted by the motor speed.

[0065] like Figure 8 As shown: The top surface of the support plate 7.1 has a slot 7.5, and the bottom surface of the ramp plate 8 has a locking strip 8.1 that engages with the slot 7.5. The engaging structure between the locking strip 8.1 and the slot 7.5 ensures that the ramp plate 8 is easy to install and remove.

[0066] Example 2

[0067] like Figure 9 As shown: A method for lifting an electromechanical module in a narrow space, using a lifting device for an electromechanical module in a narrow space as described in Example 1, completes the following steps:

[0068] S1: The overall lifting device for the electromechanical module in a narrow space is positioned at the installation location of the electromechanical module 5. The lifting drive motor 2.10 is started, and the torque is transmitted to the lead screw 2.2 of the lifting unit through the second bevel gear 2.6 and the first bevel gear 2.5. The two lead screws 2.2 rotate synchronously through the pulley 2.7 and the belt 2.8, driving the slider 2.3 to lift the lifting frame 3 until the top of the lifting frame 3 contacts the building roof. The lifting frame 3 is then fitted outside the installation location of the electromechanical module 5. At the same time, the rotation of the lead screw 2.2 drives the intermediate shaft 6.11 to rotate through the third bevel gear 6.8 and the fourth bevel gear 6.9. The input toothed pulley 6.10 drives the bidirectional lead screw 6.2 of the two sets of top support mechanisms 6 to rotate through the toothed belt 6.6. The sliding frame 6.4 slides along the intermediate frame 6.1, and the push rod 6.7 pushes the pressure plate 6.3 to extend along the guide rail 6.13, supporting the two side walls and completing the device fixation.

[0069] S2: Snap the clips 8.1 of the ramp plate 8 into the slots 7.5 of the support plate 7.1 to form a ramp from the ground to the drag module; use a flatbed trailer to drag the electromechanical module 5 to the front of the ramp plate 8, start the drag drive motor 7.4, the drag screw 7.2 rotates to drive the drag claw 7.3 forward, the drag claw 7.3 moves in the opposite direction after connecting with the flatbed trailer, dragging the electromechanical module 5 along the ramp plate 8 onto the support plate 7.1 and positioning it directly below the U-shaped opening of the lifting frame 3;

[0070] S3: Control the three electric hoists 4 to lower the hooks synchronously and connect the hooks to the lifting points on the upper half of the side of the electromechanical module 5; the layout of the upper half of the lifting points avoids the electromechanical module 5 from shaking during the lifting process, and at the same time allows the part of the electromechanical module 5 above the lifting points to pass through the lifting frame 3;

[0071] S4: The three electric hoists 4 simultaneously wind up until the top of the electromechanical module 5 contacts the building roof through the U-shaped opening of the lifting frame 3, fixing the electromechanical module 5 to the building roof and disconnecting the hook from the lifting point;

[0072] S5: Reverse start lifting drive motor 2.10, double-acting screw 6.2 of top support mechanism 6 rotates in the opposite direction, pressure plate 6.3 retracts and separates from the wall; lifting mechanism 2 drives lifting frame 3 to descend slightly and detach from the top plate, pushing the whole device to move horizontally (pulley 9 at the bottom of base frame 1 moves the whole device horizontally), lifting frame 3 moves horizontally with the device, lifting frame 3 exits horizontally from the installed electromechanical module 5, and the whole electromechanical module in the narrow space is lifted and moved to the installation location of the next electromechanical module 5.

[0073] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for lifting an electromechanical module as a whole in a narrow space, characterized in that, The method is accomplished using a narrow space electromechanical module overall lifting device. The device includes a base frame (1), a lifting mechanism (2), and a lifting frame (3). The lifting mechanism (2) is installed on the base frame (1). The lifting frame (3) includes two supporting cantilever arms (3.1). One end of the two supporting cantilever arms (3.1) is fixed to the working end of the lifting mechanism (2), and the other end extends cantilevered above the base frame (1). A crossbeam (3.2) is connected between the fixed ends of the two supporting cantilever arms (3.1). An electric hoist (4) is arranged at each cantilever end of the two supporting cantilever arms (3.1), and an electric hoist (4) is arranged in the center on the crossbeam (3.2). The lifting frame (3) is constructed with a U-shaped opening located at the cantilever end. The cavity of the base frame (1) is provided with two sets of top support mechanisms (6) that extend to the left and right sides. An auxiliary mechanism is installed on the top surface of the base frame (1). The auxiliary mechanism includes a drag module (7) and a ramp plate (8) that overlaps the drag module (7) and the ground. The method includes the following steps: S1: The overall lifting device for the electromechanical module in the narrow space is positioned at the installation location of the electromechanical module (5), the top support mechanism (6) unfolds and supports the two side walls, the lifting frame (3) rises to contact the building roof, and the lifting frame (3) is fitted outside the installation location of the electromechanical module (5); S2: Use a flatbed trailer to move the electromechanical module (5) to the front of the ramp (8), and connect the drag claw (7.3) of the drag module (7) to the flatbed trailer to move the electromechanical module (5) below the installation position; S3: The electric hoist (4) lowers its hook and connects it to the lifting point on the side of the electromechanical module (5). The lifting point is located in the upper part of the electromechanical module (5). S4: The three electric hoists (4) simultaneously rewind until the top of the electromechanical module (5) contacts the building roof through the U-shaped opening of the lifting frame (3), fixing the electromechanical module (5) to the building roof and disconnecting the hook from the lifting point; S5: The top support mechanism (6) separates from the wall, the lifting frame (3) exits horizontally from the installed electromechanical module (5), and the narrow space electromechanical module overall lifting device moves to the installation location of the next electromechanical module (5).

2. The method for lifting an electromechanical module as a whole in a narrow space according to claim 1, characterized in that: The lifting mechanism (2) includes two lifting units. Each lifting unit includes a column (2.1), a lead screw (2.2), a slider (2.3), and a torque output module. The column (2.1) has a vertical guide groove (2.4). The lead screw (2.2) is installed in the vertical guide groove (2.4). The upper and lower ends of the lead screw (2.2) are connected to the rotating seat in the column (2.1). The slider (2.3) is threadedly engaged with the lead screw (2.2) and the slider (2.3) is slidably engaged with the vertical guide groove (2.4). The support cantilever (3.1) is fixedly connected to the slider (2.3). The lower end of the lead screw (2.2) of one of the lifting units is connected to a first bevel gear (2.5). The second bevel gear (2.6) on the torque output module meshes with the first bevel gear (2.5). The lead screws (2.2) of the two lifting units rotate synchronously through pulleys (2.7) and belts (2.8).

3. The method for lifting an electromechanical module as a whole in a narrow space according to claim 1, characterized in that: Two sets of top support mechanisms (6) are arranged one in front of the other; The top support mechanism (6) includes an intermediate frame (6.1), with a top support module connected to each side of the intermediate frame (6.1); a rotatable bidirectional lead screw (6.2) is installed inside the intermediate frame (6.1), with a toothed pulley (6.2.1) in the middle and screws (6.2.2) with opposite directions of rotation on both sides of the bidirectional lead screw (6.2.1); the toothed pulleys (6.2.1) in the two top support mechanisms (6) are connected to the torque transmission module through a toothed belt (6.6); The top support module includes a guide rail (6.13), a pressure plate (6.3), and a sliding frame (6.4). The sliding frame (6.4) is slidably mounted on the intermediate frame (6.1). The sliding frame (6.4) is threadedly engaged with the screw (6.2.2) of the double-acting screw (6.2). The guide rail (6.13) is located on the left and right sides of the intermediate frame (6.1). A slide rod (6.5) is slidably inserted into the guide rail (6.13). The pressure plate (6.3) is connected to the front end of the slide rod (6.5). The pressure plate (6.3) and the sliding frame (6.4) are connected by a push rod (6.7).

4. The method for lifting an electromechanical module as a whole in a narrow space according to claim 3, characterized in that: The torque transmission module includes a third bevel gear (6.8), a fourth bevel gear (6.9), an input toothed pulley (6.10), and an intermediate shaft (6.11). The third bevel gear (6.8) is coaxially mounted on the lead screw (2.2) with the first bevel gear (2.5). The intermediate shaft (6.11) is mounted on the bearing seat (6.12) inside the base frame (1). The fourth bevel gear (6.9) and the input toothed pulley (6.10) are coaxially mounted on the intermediate shaft (6.11). The fourth bevel gear (6.9) meshes with the third bevel gear (6.8). The input toothed pulley (6.10) and the toothed pulleys (6.2.1) in the two sets of top support mechanisms (6) are connected by a toothed belt (6.6).

5. The method for lifting an electromechanical module as a whole in a narrow space according to claim 4, characterized in that: The input toothed pulley (6.10) and one of the toothed pulleys (6.2.1) are located at both ends of the toothed belt (6.6), and the other toothed pulley (6.2.1) is located in the middle of the toothed belt (6.6). Rollers (6.14) are installed on the top and bottom surfaces of the toothed belt (6.6) on the sliding frame (6.4) where the toothed pulley (6.2.1) is located. The toothed belt (6.6) is constrained between the roller (6.14) and the toothed pulley (6.2.1) so that the toothed belt (6.6) and the toothed pulley (6.2.1) are fully engaged.

6. The method for lifting an electromechanical module as a whole in a narrow space according to claim 1, characterized in that: The dragging module (7) includes a support plate (7.1), a dragging screw (7.2), and a dragging claw (7.3). The top surface of the support plate (7.1) has a straight groove. The dragging screw (7.2) is rotatably installed in the straight groove. One end of the dragging screw (7.2) is connected to the dragging drive motor (7.4). The dragging claw (7.3) slides in contact with the top surface of the support plate (7.1). The dragging claw (7.3) is fixedly connected to the screw nut on the dragging screw (7.2).

7. The method for lifting an electromechanical module as a whole in a narrow space according to claim 6, characterized in that: The top surface of the support plate (7.1) has a slot (7.5), and the bottom surface of the ramp plate (8) is provided with a clip (8.1) that engages with the slot (7.5).

8. The method for lifting an electromechanical module as a whole in a narrow space according to claim 1, characterized in that: A diagonal bracing beam (3.3) is connected between the lower part of the supporting cantilever (3.1) and the working end of the lifting mechanism (2).

Images