Lifting device and lifting method for installing air pipe

Abstract

The invention discloses a lifting device and method for installing an air pipe. The lifting device comprises a supporting frame, an operation platform and a lifting structure. The operation platform is installed on the supporting frame in a vertically-moving mode, and the operation platform is provided with an air supply pipe. The lifting structure drives the operation platform to vertically move. According to the lifting device, the air pipe can be quickly and stably lifted to a specified height, the labor intensity of workers is greatly reduced, the labor cost is reduced, the mounting efficiency is improved, the construction speed is increased, the mounting precision is ensured, and the engineering quality is ensured.

Description

Technical Field

[0001] The invention relates to the construction field of mechanical and electrical professional air duct installation in construction engineering, and in particular to a lifting device and a lifting method for installing an air duct. Background Art

[0002] With the acceleration of urbanization and the improvement of mechanical manufacturing technology and lifting technology, various types of buildings such as commercial complexes, office buildings, hotels, industrial plants, etc. are constantly being built. In these buildings, ventilation and air conditioning systems are key facilities to ensure indoor air quality, comfort and meet production process requirements, and air ducts are an important part of ventilation and air conditioning systems, responsible for transporting air. The continuous expansion of building scale and the increasing complexity of functions have greatly increased the number, size and installation difficulty of air ducts. Traditional installation methods can no longer meet the requirements of efficient and safe construction, thus giving rise to the demand for special air duct installation and lifting devices. Summary of the invention

[0003] The invention provides a lifting device and a lifting method for installing an air duct, which can lift the air duct to a specified height quickly and stably.

[0004] The embodiment of the present invention provides a lifting device for installing an air duct, comprising a supporting frame, an operating platform and a lifting structure. The operating platform is installed on the supporting frame in a vertically movable manner, and the air duct is provided on the operating platform. The lifting structure drives the operating platform to move vertically.

[0005] In some of the embodiments, a column is installed on the support frame, a vertically movable guide frame is installed on the column, and the guide frame is connected to the operating platform.

[0006] In some embodiments, the lifting structure includes a pulley, a motor, a traction rope and a hook. The pulley is mounted on a column and can rotate around a horizontal line. The output end of the motor has a drum, and the motor is mounted on a support frame. The traction rope passes around the pulley, and the first end of the traction rope is connected to the drum. The hook is connected to the second end of the traction rope, and the hook is connected to the guide frame and / or the operating platform.

[0007] In some embodiments, the lifting structure further comprises a braking device, which brakes the reel.

[0008] In some of the embodiments, a shock-absorbing rubber pad is installed between the motor and the supporting frame.

[0009] In some of the embodiments, a buffer support is installed between the operating platform and the supporting frame.

[0010] In some of the embodiments, casters are installed at the bottom of the supporting frame, and the casters have brake devices.

[0011] In some of the embodiments, the lifting device further comprises a control system. The control system controls the operation of the lifting structure.

[0012] The embodiment of the present invention further provides a lifting method using the above-mentioned lifting device, comprising the following steps: moving the lifting device to the air duct installation operation area. Inspecting the lifting device moved to the air duct installation operation area. Placing the air duct on the inspected lifting device. Lifting the air duct to a predetermined installation height by the lifting device.

[0013] In some of the embodiments, during the inspection of the lifting device, the status of various components of the lifting device is checked, and the no-load test operation of the lifting device is checked.

[0014] According to an embodiment of the present invention, a lifting device for installing an air duct includes a support frame, an operating platform and a lifting structure. The operating platform can be installed on the support frame in a vertically movable manner, and the air duct is provided on the operating platform. The lifting structure drives the operating platform to move vertically. The lifting device of the present invention can quickly and stably lift the air duct to a specified height, greatly reducing the labor intensity and labor costs, improving the installation efficiency, accelerating the construction speed, ensuring the installation accuracy, and guaranteeing the engineering quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of 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 paying any creative work.

[0016] Figure 1 is a side view of a lifting device in an embodiment of the present invention;

[0017] Figure 2 It is a front view of the lifting device in the embodiment of the present invention;

[0018] Figure 3 It is a schematic diagram of the use of the lifting device in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] In modern construction projects, mechanical and electrical installation projects cover the installation of multiple key systems, including electrical systems, water supply and drainage systems, HVAC systems, etc., and the air duct installation project inside the building is an extremely important part of the mechanical and electrical installation project. As the "veins" of the HVAC system, the air duct is responsible for transporting hot and cold air. The quality of its installation directly affects the operating efficiency and effect of the entire air conditioning system. A well-planned and precisely installed air duct system can ensure that the air circulates evenly in the building and create a comfortable indoor environment for people. Traditional air duct installation methods mostly rely on manual handling and scaffolding. This method not only consumes a lot of manpower and time, but also has low construction efficiency and high safety risks. Figure 1-3 An embodiment of the present invention provides a lifting device 1 for installing an air duct 2, including a supporting frame 11, an operating platform 12, a lifting structure 13 and a control system 14.

[0021] The support frame 11 is used to carry the components of the lifting device 1. The support frame 11 is made of high-strength steel with a rectangular cross-section. The support frame 11 is a horizontally arranged portal frame structure.

[0022] The support frame 11 has two support arms which are respectively arranged on the left and right and extend forward and backward. Two casters 111 arranged forward and backward are installed at the bottom of the two support arms. The four casters 111 are all heavy-duty casters, two of which are fixed wheels 1111 and two are universal wheels 1112. The four casters 111 are all equipped with brake devices to facilitate flexible movement and precise positioning at the construction site.

[0023] The support frame 11 also has a first connecting arm that connects the front ends of the two support arms and extends left and right. A support frame 112 is installed on the upper part of the first connecting arm. A handle 113 is installed on the upper front side of the support frame 112. A mounting platform 114 is installed on the top of the support frame 112. The mounting platform 114 is welded with steel plates and has sufficient strength and stability.

[0024] The support frame 11 also has a second connecting arm arranged in parallel at the rear side of the first connecting arm. Two columns 115 arranged on the left and right are installed on the upper part of the second connecting arm. The heights of the two columns 115 are adjustable and can be quickly adjusted according to different installation height requirements of the air duct 2. A crossbeam 116 is connected to the top of the two columns 115. A vertically extending linear guide is installed on the inner side of the two columns 115. The linear guide is made of high-precision channel steel, and the surface is quenched and ground, with good wear resistance and straightness. A guide frame 116 that can move vertically is installed on the above two linear guides. Two rollers 117 arranged up and down are installed on the left and right sides of the guide frame 116. The above four rollers 117 maintain an appropriate gap with the two linear guides, so that the rollers 117 can roll up and down smoothly along the linear guides. The guide frame 116 is used to connect with the operating platform 12, so as to effectively prevent the air duct 2 on the operating platform 12 from shaking or swinging during the lifting process. The second connecting arm is connected to the support frame 112 via the oblique support 1121. The left and right ends of the cross beam 116 are connected to the left and right ends of the first connecting arm via the oblique steel wire 119.

[0025] The operating platform 12 is used for setting the air supply duct 2. The operating platform 12 is made of high-strength steel with a rectangular cross-section. The operating platform 12 has a rectangular parallelepiped frame structure. The operating platform 12 has an upper square frame, a lower square frame and four connecting rods connecting the upper square frame and the lower square frame.

[0026] The operating platform 12 is connected to the guide frame 116. The operating platform 12 is arranged at the rear side of the guide frame 116 and is arranged vertically opposite to the two support arms.

[0027] Two buffer supports 118 are installed between the operating platform 12 and the two support arms. The buffer supports 118 are made of rubber.

[0028] The lifting structure 13 is used to drive the operating platform 12 to move vertically. The lifting structure 13 includes a pulley 131, a motor 132, a traction rope 133, a hook 134 and a brake device.

[0029] The pulley 131 is installed at the center of the crossbeam 116. The pulley 131 can rotate around a horizontal line extending left and right.

[0030] The output end of the motor 132 is connected to the reel through a reducer to convert electrical energy into the rotational power of the reel. The motor 132 is mounted on the mounting platform 114. A shock-absorbing rubber pad is installed between the motor 132 and the mounting platform 114 to reduce the impact of the vibration generated when the motor 132 is running on the entire frame structure. The motor 132 is connected to a power supply access line 1321.

[0031] The traction rope 133 passes through the pulley 131, and the first end of the traction rope 133 is connected to the drum. The traction rope 133 is a steel wire.

[0032] The hook 134 is connected to the second end of the traction rope 133, so as to realize the lifting action of the hook 134. The hook 134 is connected to the guide frame 116 and / or the operating platform 12. The hook 134 is made of high-strength alloy steel and has an anti-unhooking design to ensure safety and reliability during the lifting of the air duct 2. Optionally, the hook 134 is reliably connected to the operating platform 12 through a dedicated lifting device to ensure that the lifting device can evenly bear the weight of the air duct 2 and will not fall off during the lifting process.

[0033] The brake device brakes the drum. The brake device adopts a combination of electromagnetic braking and mechanical braking. When the motor 132 stops supplying power, the drum can be braked quickly and reliably to prevent the air duct 2 from falling.

[0034] The control system 14 controls the operation of the lifting structure 13. The control system 14 includes a control box, a remote control device, a limit switch, an overload protection device, and the like.

[0035] The control box is installed on the front side of the column 115 and is arranged above the handle 113. The control box is connected to the motor 132, the brake device and other components. The control box adopts a waterproof, dustproof and impact-proof metal shell. Electrical control components are installed inside the control box, including contactors, relays, thermal relays, fuses, PLC controllers, and various control buttons and indicator lights. The front side of the control box is provided with an operation panel, which is provided with a power switch, an up button, a down button, an emergency stop button, a speed adjustment knob, and a fault indicator light. The layout of the operation panel conforms to the principles of ergonomics and is convenient for operators to operate. Through the speed adjustment knob, the lifting speed of the hook 134 can be accurately adjusted according to actual construction requirements to achieve a smooth lifting of the air duct 2.

[0036] The remote control device communicates with the receiving module in the control box via wireless signals. The operation buttons on the remote control device have the same functions as the buttons on the operation panel. The operator can remotely control the hook 134 from a position far away from the lifting device 1, which is convenient for better observing the lifting of the air duct 2 and operating it in the complex environment of the construction site, thereby improving the convenience and flexibility of operation.

[0037] The limit switch is used to obtain the height information of the hook 134. According to the information of the limit switch, the control box controls the motor 132 to stop running and sends out an alarm message.

[0038] The overload protection device is used to obtain the weight information on the operating platform 12. According to the information of the overload protection device, the control box sends out an alarm message.

[0039] The working principle of the lifting device 1 of the present invention is as follows:

[0040] 1. Start the power switch on the control box to power the entire lifting structure 13.

[0041] 2. The operator can choose to operate directly on the control panel or use the remote control device as needed. When the up button is pressed, the control circuit connects the forward circuit of the motor 132, and the motor 132 starts to rotate and drives the reel to rotate clockwise through the reducer. At this time, the hook 134 is lifted upward under the traction of the reel. Conversely, when the down button is pressed, the motor 132 reverses, the reel rotates counterclockwise, and the hook 134 descends.

[0042] 3. During the lifting process, the brake device is in a released state. When the motor 132 stops running, the brake device immediately holds the drum tightly, so that the hook 134 stops at the current position to prevent the air duct 2 from falling due to its own weight.

[0043] 4. The operator can understand the working status and fault conditions of the lifting structure 13 by observing the indicator lights on the control box and the display information on the operation panel. At the same time, according to the actual situation of the construction site, the lifting speed of the hook 134 is adjusted through the speed adjustment knob to ensure that the air duct 2 can be lifted to the specified installation height smoothly and safely.

[0044] An embodiment of the present invention provides a lifting method using the above-mentioned lifting device 1, comprising the following steps:

[0045] (1) Move the lifting device 1 to the air duct 2 installation operation area.

[0046] In the above steps, after the lifting device 1 is moved to the air duct 2 installation operation area, the brake device of the caster 111 is stepped on to fix the lifting device 1.

[0047] (2) Check the lifting device 1 that has been moved to the air duct 2 installation work area.

[0048] In the above steps, during the inspection of the lifting device 1, the status of each component of the lifting device 1 is checked, as well as the no-load test run of the lifting device 1. Checking the status of each component of the lifting device 1 includes checking whether the connection parts of the lifting device 1 are firm, whether the cables are damaged or aged, etc. Checking the no-load test run of the lifting device 1 includes performing a no-load test run on the lifting structure 13, checking whether the rising and falling movements of the hook 134 are flexible, whether the braking device is reliable, and observing the operation of the guide frame 116 to ensure that there are no problems such as jamming and abnormal sounds.

[0049] (3) Place the air duct 2 on the inspected lifting device 1.

[0050] In the above steps, corresponding parameters are set in the control box according to the weight and size of the air duct 2, such as lifting weight limit, lifting height limit, etc.

[0051] (4) The air duct 2 is lifted to a predetermined installation height by means of the lifting device 1.

[0052] In the above steps, before starting to lift the air duct 2, check the connection between the air duct 2 and the lifting device 1 and the surrounding environment. After confirming that there is no problem, the operator starts the motor 132 and starts to slowly lift the air duct 2. After starting to lift the air duct 2, in the initial stage of lifting, closely observe the lifting state of the air duct 2. If there is any tilt or shaking, the lifting should be stopped immediately and continued after adjustment. During the lifting process, the operator should adjust the lifting speed of the hook 134 in time according to the actual situation to ensure that the air duct 2 rises smoothly. At the same time, the construction personnel should do auxiliary work under the air duct 2 to prevent the air duct 2 from colliding with surrounding objects during the lifting process. When the air duct 2 is lifted to the installation height, stop the operation of the motor 132.

[0053] After the air duct 2 is lifted to the installation height, the construction personnel carry out docking and installation of the air duct 2. During the docking and installation process, if the height of the air duct 2 needs to be fine-tuned, the motor 132 can be started again to raise or lower the air duct 2 by a short distance to meet the installation accuracy requirements. After the air duct 2 is installed, the operator starts the motor 132 to lower the hook 134, cleans up the debris around the lifting device 1, checks whether there is any abnormality in the lifting device 1, and handles any problems in a timely manner, and releases the brake device of the caster 111, moves the lifting device 1 to the next air duct 2 installation operation area, and repeats the above operation process.

[0054] The lifting device 1 of the present invention has the following beneficial effects:

[0055] 1. Improve the installation efficiency of air duct 2

[0056] In modern construction projects, especially large commercial complexes, high-rise buildings, and industrial plants, the scale of ventilation duct systems is huge and the installation period is tight. Traditional duct installation methods, such as relying on manual handling and the assistance of simple lifting tools, are cumbersome, time-consuming, and labor-intensive. The lifting device 1 of the present invention can realize the rapid and efficient lifting and installation of the duct 2, and can complete more duct 2 installation work per unit time, thereby greatly shortening the installation cycle of the entire ventilation duct 2 system, ensuring that the overall progress of the construction project is not delayed by the installation of the ventilation system.

[0057] 2. Ensure installation accuracy

[0058] The accuracy of duct installation has a crucial impact on the performance of the ventilation system. Inaccurate installation may lead to problems such as poor sealing of duct connections, poor airflow, increased noise, etc., which seriously affect the ventilation effect and indoor environmental quality. The lifting device 1 of the present invention can accurately adjust the height, horizontality and angle of the duct 2 to ensure that the duct 2 can be accurately docked during the installation process, so that the connection between the ducts 2 is tight and smooth, and meets the installation tolerance range required by the design, thereby ensuring that the ventilation system can operate efficiently and stably, and reducing subsequent maintenance and debugging work caused by installation errors.

[0059] 3. Ensure construction safety

[0060] The environment of a construction site is complex and there are many potential safety hazards, especially when installing large components such as air ducts, where the safety risks are even higher. Traditional installation methods are prone to accidents, such as air duct falling, collisions and injuries, etc., due to the lack of comprehensive safety protection measures and stable lifting mechanisms. The lifting device 1 of the present invention can ensure the stability and reliability of the device during the lifting process; at the same time, it can prevent the device from being damaged due to lifting overweight air ducts 2, avoid over-travel operation of the hoist, and quickly stop the operation of the device in an emergency, etc., thereby protecting the personal safety of construction personnel and the equipment safety of the construction site from multiple aspects, reducing the probability of safety accidents, and creating a safe and reliable construction environment.

[0061] 4. Adapt to various duct installation scenarios

[0062] Different types of buildings and different ventilation system designs have large differences in the size, shape, weight and installation location of their air ducts. Some projects may require the installation of air ducts in a narrow space, while others involve high-rise or large-span installation environments. The lifting device 1 of the present invention has a high degree of versatility and adaptability, and can be used for the lifting of air ducts 2 of different diameters, lengths and shapes; the flexible and movable support frame 11 allows it to operate in different terrain conditions and building structure environments, and can easily and quickly install the air duct 2 to meet the diverse needs of air duct 2 installation in construction projects, reducing the increased cost and time waste caused by the need to replace different equipment due to special installation scenarios.

[0063] 5. Reduce labor costs and labor intensity

[0064] With the changes in the labor market, labor costs continue to rise, and the traditional air duct installation method is highly dependent on manpower. Workers need to engage in high-intensity physical labor for a long time, such as carrying heavy air ducts, operating simple lifting tools for a long time, etc. This not only easily leads to worker fatigue and physical injury, but also increases the labor cost expenditure of construction companies. The lifting device 1 of the present invention minimizes the manual intervention link through automated and mechanized operation, so that workers can be liberated from heavy physical labor and only need to perform simple operation control and supervision work, thereby reducing the demand for manpower, improving labor productivity, and effectively reducing the labor cost of construction companies. At the same time, it is also conducive to improving the working conditions of workers and improving the comfort and safety of work.

[0065] In summary, the lifting device 1 of the present invention can quickly and stably lift the air duct 2 to a specified height, greatly reducing the labor intensity, reducing labor costs, improving installation efficiency, speeding up construction, ensuring installation accuracy, and ensuring project quality. It can be flexibly adjusted according to different construction requirements, adapting to various complex installation environments, and ensuring the smooth installation of the air duct 2. In the installation of air duct 2 in some large commercial buildings or industrial plants, the use of the lifting device 1 can significantly shorten the construction period, complete the project delivery in advance, save a lot of time and cost for the enterprise, and ensure the quality of the project.

[0066] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lifting device for installing an air duct, characterized in that: include: Support frame; An operating platform is vertically movably mounted on the supporting frame, and the operating platform is provided with an air duct; The lifting structure drives the operating platform to move vertically.

2. The lifting device according to claim 1, characterized in that: The support frame is provided with upright posts, the upright posts are provided with guide frames capable of vertical movement, and the guide frames are connected to the operating platform.

3. The lifting device according to claim 2, characterized in that: The lifting structure comprises: A pulley is mounted on the column, and the pulley can rotate around a horizontal line; A motor, with a reel at the output end, the motor being mounted on the support frame; A traction rope is passed around the pulley, and a first end of the traction rope is connected to the drum; A hook is connected to the second end of the traction rope, and the hook is connected to the guide frame and / or the operating platform.

4. The lifting device according to claim 3, characterized in that: The lifting structure also includes: A braking device is used to brake the reel.

5. The lifting device according to claim 3, characterized in that: A shock-absorbing rubber pad is installed between the motor and the supporting frame.

6. The lifting device according to claim 1, characterized in that: A buffer support is installed between the operating platform and the supporting frame.

7. The lifting device according to claim 1, characterized in that: A caster is installed at the bottom of the supporting frame, and the caster has a brake device.

8. The lifting device according to claim 1, characterized in that: Also includes: A control system controls the operation of the lifting structure.

9. A lifting method using the lifting device according to any one of claims 1 to 8, comprising the following steps: Move the lifting device to the duct installation work area; Inspecting the lifting device moved to the air duct installation operation area; placing the air duct on the inspected lifting device; The air duct is lifted to a predetermined installation height by the lifting device.

10. The lifting method according to claim 9, characterized in that: During the inspection of the lifting device, the status of each component of the lifting device is checked, and the no-load test operation of the lifting device is checked.

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