Building electrical construction lifting device

Abstract

The utility model discloses a building electrical construction lifting device which comprises a moving trolley and a bottom frame, the top end of the moving trolley is provided with the bottom frame, the top end of the bottom frame is movably provided with a supporting shaft, the supporting shaft extends to the bottom of the bottom frame, and the top end of the supporting shaft is provided with a rotating frame. And a mechanical arm is mounted at the center position of the top end of the rotating frame. According to the lifting device, convenient and fast adjustable clamping and fixing, convenient and fast multi-position adjustable clamping position adjustment and multi-time rotation lifting position adjustment of building electrical equipment are achieved, flexible conveying to an installation position through a mechanical arm is facilitated, and multi-position rotation lifting position adjustment of the lifting device is facilitated; and the convenience of lifting and conveying and the installation efficiency during the installation of the building electrical equipment are improved.

Description

Technical Field

[0001] This utility model relates to the field of lifting device technology, specifically a building electrical construction lifting device. Background Technology

[0002] Building electrical engineering refers to the electrical platform constructed in a building using modern advanced scientific theories and electrical technologies. The design process involves conceptualization, re-conceptualization, repeated refinement, continuous development, and evaluation. It can be broadly summarized as several stages: exploration, creation, conceptualization, and expression. The main advantage of building electrical engineering lies in its ability to provide a comfortable, convenient, and safe building environment. Through building electrical engineering, information exchange, transmission, and control within and between the building and the outside world can be achieved, thereby enhancing the building's intelligence level and meeting people's needs for comfort, convenience, and safety.

[0003] For example, the construction electrical lifting device disclosed in the authorization announcement number CN213771252U includes a lifting platform. The top of the lifting platform is fixedly connected to guardrails on all four sides. The front left side of the top of the lifting platform and the back right side of the top of the lifting platform are fixedly connected to mounting platforms. The top of the two mounting platforms is rotatably connected to supports, and the top of the two supports is provided with movable support rods.

[0004] Although the lifting platform is equipped with guardrails fixedly connected to all four sides of the top, and mounting platforms are fixedly connected to the front left side and the back right side of the top, and the top of the two mounting platforms are rotatably connected to supports, it is possible to use a winch to hoist the facilities to be installed or dismantled at the construction height. One person can operate the construction, without the need for multiple people to cooperate, reducing manpower consumption and saving time and effort.

[0005] However, the existing lifting devices do not solve the problems of inconvenient adjustable clamping and fixing during use, the inconvenience of adjusting the clamping position in multiple positions, and the difficulty of repeatedly rotating to adjust the lifting position. This makes it difficult for the robotic arm to flexibly transport the equipment to the installation position and perform multi-position rotation to adjust the lifting position, thus affecting the convenience of lifting and transporting and the efficiency of installation of building electrical equipment. Utility Model Content

[0006] The purpose of this utility model is to provide a building electrical construction lifting device to solve the problems mentioned in the background art, such as the inconvenience of convenient adjustable clamping and fixing, convenient multi-position adjustable clamping position, multiple rotations to adjust the lifting position, and the inconvenience of the robot arm to flexibly transport to the installation position and perform multi-position rotation to adjust the lifting position, which affect the convenience of lifting and transporting and the efficiency of installation of building electrical equipment.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a construction electrical lifting device, comprising a mobile trolley and a base frame. The base frame is mounted on the top of the mobile trolley, and a support shaft is movably mounted on the top of the base frame, extending to the bottom of the base frame. A rotating frame is mounted on the top of the support shaft, and a mechanical arm is mounted at the center of the top of the rotating frame. A rotating box is mounted on the end of the mechanical arm away from the rotating frame, and a linkage block is movably mounted on the bottom of the rotating box. A connecting frame is mounted on the end of the linkage block away from the rotating box. A transverse rail is slidably mounted on the outer wall of the connecting frame, and symmetrically arranged sliding grooves are provided on the side walls of the transverse rail. Sliding frames are slidably mounted inside each sliding groove. A longitudinal rail is mounted on the top of each sliding frame, and an upper sliding groove is provided on the top of each longitudinal rail. A clamping arm is slidably mounted inside each longitudinal rail below the upper sliding groove, and a clamping claw is mounted on the end of each clamping arm away from the longitudinal rail. A counterweight is provided on the top of the mobile trolley below the rotating frame.

[0008] Preferably, a stepper motor is installed on the side wall of the transverse rail below the slide frame, and a lower threaded sleeve is installed at the bottom of the slide frame on the side of the stepper motor. The lower threaded sleeve is slidably connected to the transverse rail frame. The interior of the lower threaded sleeve is threaded with a lower threaded rod, and the lower threaded rod is connected to the output end of the stepper motor.

[0009] Preferably, each of the transverse rails below the slide frame is equipped with a slide rail, and each slide rail is slidably mounted with a slide block at its top, and the slide block is connected to the slide frame.

[0010] Preferably, a side threaded sleeve is slidably installed inside the connecting frame on one side of the robotic arm, and the side threaded sleeve is fixedly connected to the transverse rail frame. Servo motors are symmetrically installed on the top of the connecting frame above the side threaded sleeve. Side threaded rods are threadedly connected inside the side threaded sleeves below the servo motors, and the side threaded rods are all connected to the output end of the servo motors.

[0011] Preferably, each of the longitudinal rails above the slide frame is equipped with a variable frequency motor, and each of the upper sliding grooves on one side of the variable frequency motor is slidably installed with an upper threaded sleeve, and the bottom end of the upper threaded sleeve is connected to the clamping arm. Each of the upper threaded sleeves is threaded with an upper threaded rod, and the upper threaded rod is connected to the output end of the variable frequency motor.

[0012] Preferably, an electric push rod is installed on the side wall of the base frame below the rotating frame, and a rack is installed at the output end of the electric push rod.

[0013] Preferably, a gear is fitted at the bottom end of the support shaft on one side of the rack, and the rack meshes with the gear.

[0014] Preferably, a rotary motor is installed inside the rotating box below the robotic arm, and a worm gear is installed at the output end of the rotary motor.

[0015] Preferably, a worm wheel is movably installed inside the rotating box on one side of the worm, and the worm wheel meshes with the worm. A rotating shaft is installed at the bottom end of the worm wheel, and the rotating shaft extends to the outside of the rotating box and is fixedly connected to the linkage block.

[0016] Preferably, a remote controller is installed on the top of the mobile trolley on one side of the counterweight, and the output of the remote controller is electrically connected to the input of the robotic arm, stepper motor, servo motor, frequency converter motor, electric push rod, and rotary motor.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the lifting device not only realizes convenient adjustable clamping and fixing of building electrical equipment, but also convenient multi-position adjustable clamping position, and multiple rotations to adjust the lifting position, which facilitates flexible transportation to the installation position by the robotic arm, and facilitates multi-position rotation and adjustment of the lifting position of the lifting device, thus improving the convenience of lifting and transportation and the efficiency of installation of building electrical equipment.

[0018] (1) The lower threaded rod is driven to rotate by the stepper motor. The lower threaded rod drives the lower threaded sleeve to move. The lower threaded sleeve drives the lower slide frame to slide inside the lower slide groove. The lower slide frame drives the longitudinal rail frame to move. The longitudinal rail frame drives the clamping arm and the jaw to move synchronously. With the cooperation of the two sets of clamping arms, the two sets of jaws clamp the building electrical equipment to facilitate subsequent lifting and conveying operations. The robotic arm transports the clamped building electrical equipment from the ground to the designated construction site to facilitate the installation of equipment by construction personnel. The servo motor drives the side threaded rod to rotate. The side threaded rod drives the side threaded sleeve to move. The side threaded sleeve drives the transverse rail frame, the lower slide frame, the longitudinal rail frame, the clamping arm, the jaws and the clamped building electrical equipment to move synchronously to readjust the height of the transported building electrical equipment. This realizes the convenient adjustable clamping and fixing of the building electrical equipment by the building electrical construction lifting device. It is convenient to transport the equipment to the installation position flexibly by the robotic arm. It is convenient to readjust the height during installation and improves the convenience of lifting and conveying the building electrical equipment during installation.

[0019] (2) The variable frequency motor drives the upper threaded rod to rotate, the upper threaded rod drives the upper threaded sleeve to move inside the upper slide groove, and the upper threaded sleeve drives the clamping arm and the clamping claw to move synchronously, so as to facilitate the adjustment of the length of the clamping arm and the clamping claw, and to facilitate the subsequent clamping and conveying operation of large building electrical equipment. This realizes the convenient multi-position adjustment of the clamping position of the building electrical construction lifting device, which facilitates the convenient clamping and fixing of large building electrical equipment.

[0020] (3) The electric push rod drives the rack to move, the rack drives the gear to rotate, the gear drives the rotating frame to rotate through the support shaft, and the rotating frame drives the mechanical arm to rotate, so as to facilitate the overall rotation of the lifting device. The rotary motor drives the worm to rotate, the worm drives the worm wheel to rotate, and the worm wheel drives the linkage block to rotate through the rotating shaft. The linkage block drives the sliding groove, longitudinal rail frame, clamping arm and clamping jaw to rotate synchronously through the connecting frame, so as to facilitate the clamping jaw to rotate to the designated position. This realizes the convenient multiple rotation adjustment of the lifting position of the building electrical construction lifting device, which facilitates the multi-position rotation adjustment of the lifting device, increases the range of conveying and adjustment of the lifting device, and improves the efficiency of building electrical equipment installation. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a front view of the rotating frame of this utility model.

[0023] Figure 3 This is a front view structural diagram of the present utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the robotic arm of this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of the variable frequency motor of this utility model;

[0026] Figure 6 This is a three-dimensional structural diagram of the side threaded sleeve of this utility model;

[0027] Figure 7 This is a three-dimensional structural diagram of the gear of this utility model;

[0028] Figure 8 This is a front view cross-sectional structural diagram of the rotating box of this utility model;

[0029] In the diagram: 1. Mobile trolley; 2. Base frame; 3. Support shaft; 4. Rotating frame; 5. Robotic arm; 6. Rotating box; 7. Linkage block; 8. Connecting frame; 9. Transverse rail frame; 10. Lower slide groove; 11. Lower slide frame; 12. Longitudinal rail frame; 13. Upper slide groove; 14. Clamping arm; 15. Clamping jaw; 16. Stepper motor; 17. Lower threaded rod; 18. Lower threaded sleeve; 19. Servo motor; 20. Side threaded sleeve; 21. Side threaded rod; 22. Variable frequency motor; 23. Upper threaded rod; 24. Upper threaded sleeve; 25. Electric push rod; 26. Rack; 27. Gear; 28. Rotary motor; 29. ​​Worm gear; 30. Worm wheel; 31. Rotating shaft; 32. Counterweight; 33. Remote controller; 34. Slide rail; 35. Slide seat. Detailed Implementation

[0030] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0031] Please see Figure 1-8 This utility model provides an embodiment of a construction electrical lifting device, comprising a mobile trolley 1 and a base frame 2. The base frame 2 is mounted on the top of the mobile trolley 1, and a support shaft 3 is movably mounted on the top of the base frame 2, extending to the bottom of the base frame 2. A rotating frame 4 is mounted on the top of the support shaft 3, and a mechanical arm 5 is mounted at the center of the top of the rotating frame 4. A rotating box 6 is mounted on the end of the mechanical arm 5 away from the rotating frame 4, and a linkage block 7 is movably mounted on the bottom of the rotating box 6. A linkage block 7 is mounted on the end of the linkage block 7 away from the rotating box 6. The connecting frame 8 has a transverse rail 9 slidably mounted on its outer wall. The transverse rail 9 has symmetrically arranged sliding grooves 10 on its side wall. The sliding grooves 10 are all slidably mounted with sliding frames 11 inside. The top of each sliding frame 11 is mounted with a longitudinal rail 12. The top of each longitudinal rail 12 is provided with an upper sliding groove 13. The longitudinal rail 12 below the upper sliding groove 13 is slidably mounted with a clamping arm 14 inside. The end of the clamping arm 14 away from the longitudinal rail 12 is equipped with a gripper 15. The top of the moving trolley 1 below the rotating frame 4 is provided with a counterweight 32.

[0032] Stepper motors 16 are installed on the side walls of the transverse rail frame 9 below the slide frame 11. The stepper motors 16 serve as power drives. The bottom of the slide frame 11 on one side of the stepper motor 16 is equipped with a lower threaded sleeve 18, and the lower threaded sleeve 18 is slidably connected to the transverse rail frame 9. The lower threaded sleeve 18 is threaded with a lower threaded rod 17 inside, and the lower threaded rod 17 is connected to the output end of the stepper motor 16.

[0033] The top of the transverse rail frame 9 below the slide frame 11 is equipped with a slide rail 34, and the top of the slide rail 34 is slidably equipped with a slide block 35, and the slide block 35 is connected to the slide frame 11. The connecting frame 8 on one side of the robotic arm 5 is slidably equipped with a side threaded sleeve 20, and the side threaded sleeve 20 is fixedly connected to the transverse rail frame 9. The top of the connecting frame 8 above the side threaded sleeve 20 is symmetrically equipped with a servo motor 19, which plays the role of power drive. The side threaded sleeve 20 below the servo motor 19 is threadedly connected with a side threaded rod 21, and the side threaded rod 21 is connected to the output end of the servo motor 19.

[0034] The device is moved to the construction site by the mobile trolley 1. The stepper motor 16 is turned on by operating the remote controller 33. Supported by the transverse rail frame 9, the stepper motor 16 drives the lower threaded rod 17 to rotate. Under the meshing action of the lower threaded rod 17 and the lower threaded sleeve 18, the lower threaded rod 17 drives the lower threaded sleeve 18 to move. The lower threaded sleeve 18 drives the slide frame 11 to slide inside the slide groove 10. The slide frame 11 drives the longitudinal rail frame 12 to move. The longitudinal rail frame 12 drives the clamping arm 14 and the clamping jaw 15 to move synchronously. With the cooperation of arm 14, two sets of grippers 15 clamp the building electrical equipment to facilitate subsequent lifting and conveying operations. When the sliding frame 11 moves laterally, the sliding frame 11 drives the sliding base 35 to slide on the surface of the slide rail 34 to limit and support the sliding frame 11. By operating the remote controller 33, the robotic arm 5 is opened, and the moving trolley 1 supports the support shaft 3 via the base frame 2. The support shaft 3 supports the robotic arm 5 via the rotating frame 4. The robotic arm 5 then transports the clamped building electrical equipment from the ground to the designated construction site. To facilitate the installation of equipment by construction workers, when the robotic arm 5 is transported to the designated position and the height needs to be adjusted again, the servo motor 19 is turned on by operating the remote controller 33. The connecting frame 8 supports the servo motor 19, and the servo motor 19 drives the side threaded rod 21 to rotate. With the threaded engagement between the side threaded rod 21 and the side threaded sleeve 20, the side threaded rod 21 drives the side threaded sleeve 20 to move. The side threaded sleeve 20 drives the transverse rail frame 9, the lower slide frame 11, the longitudinal rail frame 12, the clamping arm 14, the clamping claw 15, and the clamped building electrical equipment to move synchronously, so as to adjust the height of the transported building electrical equipment again. While the lifting device is in use, the lifting device is affected by the gravity of the counterweight block 32 to prevent the device from tipping over due to excessive weight of the building electrical equipment, thereby reducing the occurrence of accidents. The building electrical construction lifting device realizes convenient adjustable clamping and fixing of building electrical equipment, which facilitates flexible transport to the installation position by the robotic arm, facilitates the adjustment of height during installation, and improves the convenience of lifting and transporting building electrical equipment during installation.

[0035] A variable frequency motor 22 is installed at the top of the longitudinal rail frame 12 above the slide frame 11. The variable frequency motor 22 plays the role of power drive. An upper threaded sleeve 24 is slidably installed inside the upper slide groove 13 on one side of the variable frequency motor 22. The bottom end of the upper threaded sleeve 24 is connected to the clamping arm 14. The upper threaded sleeve 24 is threadedly connected to the upper threaded rod 23 inside. The upper threaded rod 23 is connected to the output end of the variable frequency motor 22.

[0036] By operating the remote controller 33 to turn on the variable frequency motor 22, the longitudinal rail frame 12 supports the variable frequency motor 22, and the variable frequency motor 22 drives the upper threaded rod 23 to rotate. With the threaded engagement between the upper threaded rod 23 and the upper threaded sleeve 24, the upper threaded rod 23 drives the upper threaded sleeve 24 to move inside the upper slide groove 13. The upper threaded sleeve 24 drives the clamping arm 14 and the clamping jaw 15 to move synchronously, so as to facilitate the adjustment of the length of the clamping arm 14 and the clamping jaw 15, and to facilitate the subsequent clamping and conveying operations of large building electrical equipment. This realizes the convenient multi-position adjustment of the clamping position of the building electrical construction lifting device, which facilitates the convenient clamping and fixing of large building electrical equipment.

[0037] An electric push rod 25 is installed on the side wall of the base frame 2 below the rotating frame 4. The electric push rod 25 plays the role of power drive. A rack 26 is installed at the output end of the electric push rod 25. A gear 27 is fitted at the bottom end of the support shaft 3 on one side of the rack 26, and the rack 26 and the gear 27 mesh.

[0038] A rotary motor 28 is installed inside the rotating box 6 below the robotic arm 5. The rotary motor 28 serves as a power drive. A worm gear 29 is installed at the output end of the rotary motor 28. A worm wheel 30 is movably installed inside the rotating box 6 on one side of the worm gear 29. The worm wheel 30 meshes with the worm gear 29. A rotating shaft 31 is installed at the bottom end of the worm wheel 30. The rotating shaft 31 extends to the outside of the rotating box 6 and is fixedly connected to the linkage block 7.

[0039] A remote controller 33 is installed on the top of the mobile trolley 1 on one side of the counterweight 32, and the output end of the remote controller 33 is electrically connected to the input end of the robotic arm 5, stepper motor 16, servo motor 19, frequency converter motor 22, electric push rod 25, and rotary motor 28.

[0040] The electric push rod 25 is activated by operating the remote controller 33. The base frame 2 supports the electric push rod 25, which drives the rack 26 to move. Under the meshing action of the rack 26 and the gear 27, the rack 26 drives the gear 27 to rotate. The gear 27 drives the rotating frame 4 to rotate via the support shaft 3. The rotating frame 4 drives the robotic arm 5 to rotate, facilitating the overall rotation of the lifting device. The rotary motor 28 is activated by operating the remote controller 33. The rotating box 6 supports the rotary motor 28, which drives the worm gear 29 to rotate. Under the meshing action of worm 29 and worm gear 30, worm 29 drives worm gear 30 to rotate. Worm gear 30 drives linkage block 7 to rotate via rotating shaft 31. Linkage block 7 drives sliding groove 10, longitudinal rail frame 12, clamping arm 14 and clamping jaw 15 to rotate synchronously via connecting frame 8, so as to facilitate the rotation of clamping jaw 15 to the designated position. This realizes the convenient multiple rotation adjustment of the lifting position of the building electrical construction lifting device, which facilitates the lifting device to perform multi-position rotation adjustment of the lifting position, increases the range of conveying and adjustment of the lifting device, and improves the efficiency of building electrical equipment installation.

[0041] Working principle: When in use, an external power supply is connected. First, the operator moves the device to the construction site using a mobile trolley 1. The stepper motor 16 drives the lower threaded rod 17 to rotate. The lower threaded rod 17 moves the lower threaded sleeve 18, which in turn moves the lower threaded frame 11, causing it to slide inside the lower slide groove 10. The lower slide 11 then moves the longitudinal rail frame 12, which in turn moves the clamping arms 14 and jaws 15 synchronously. With the cooperation of the two sets of clamping arms 14, the two sets of jaws 15 clamp the building electrical equipment to facilitate subsequent lifting. During the lowering and conveying operation, when the lower slide 11 moves laterally, the lower slide 11 drives the slide block 35 to slide on the surface of the slide rail 34 to limit and support the lower slide 11. The robotic arm 5 transports the clamped building electrical equipment from the ground to the designated construction site to facilitate the installation of the equipment by construction personnel. When the robotic arm 5 has transported the equipment to the designated position and a height adjustment is required, the servo motor 19 drives the side threaded rod 21 to rotate, the side threaded rod 21 drives the side threaded sleeve 20 to move, and the side threaded sleeve 20 drives the transverse rail frame 9 and the lower slide 1. 1. The longitudinal rail frame 12, clamping arm 14, gripper 15, and the clamped building electrical equipment move synchronously to readjust the height of the conveyed building electrical equipment. The variable frequency motor 22 drives the upper threaded rod 23 to rotate, and the upper threaded rod 23 drives the upper threaded sleeve 24 to move inside the upper slide groove 13. The upper threaded sleeve 24 drives the clamping arm 14 and gripper 15 to move synchronously to facilitate the adjustment of the length of the clamping arm 14 and gripper 15, so as to facilitate subsequent clamping and conveying operations for larger building electrical equipment. The electric push rod 25 drives the rack 26 to move. The rack 26 drives the gear 27 to rotate, and the gear 27 drives the rotating frame 4 to rotate via the support shaft 3. The rotating frame 4 drives the mechanical arm 5 to rotate, so as to facilitate the overall rotation of the lifting device. The rotary motor 28 drives the worm 29 to rotate, and the worm 29 drives the worm wheel 30 to rotate. The worm wheel 30 drives the linkage block 7 to rotate via the rotating shaft 31. The linkage block 7 drives the sliding groove 10, the longitudinal rail frame 12, the clamping arm 14 and the gripper 15 to rotate synchronously via the connecting frame 8, so as to facilitate the rotation of the gripper 15 to the designated position to complete the use of the lifting device.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A construction electrical lifting device, comprising a mobile trolley and a base frame, characterized in that: The mobile trolley has a base frame mounted on its top. A support shaft is movably mounted on the top of the base frame, extending to the bottom of the base frame. A rotating frame is mounted on the top of the support shaft. A robotic arm is mounted at the center of the top of the rotating frame. A rotating box is mounted on the end of the robotic arm away from the rotating frame. A linkage block is movably mounted on the bottom of the rotating box. A connecting frame is mounted on the end of the linkage block away from the rotating box. A transverse rail is slidably mounted on the outer wall of the connecting frame. A sliding groove is symmetrically arranged on the side wall of the transverse rail. A sliding frame is slidably mounted inside each sliding groove. A longitudinal rail is mounted on the top of each sliding frame. An upper sliding groove is provided on the top of each longitudinal rail. A clamping arm is slidably mounted inside each longitudinal rail below the upper sliding groove. A gripper is mounted on the end of each clamping arm away from the longitudinal rail. A counterweight is mounted on the top of the mobile trolley below the rotating frame.

2. The construction electrical lifting device according to claim 1, characterized in that: Stepper motors are installed on the side walls of the transverse rails below the slide frame. A threaded sleeve is installed at the bottom of the slide frame on the side of the stepper motor, and the threaded sleeve is slidably connected to the transverse rails. The threaded sleeve is threaded with a threaded rod inside, and the threaded rod is connected to the output end of the stepper motor.

3. The construction electrical lifting device according to claim 1, characterized in that: The top of each horizontal rail frame below the slide frame is equipped with a slide rail, and the top of each slide rail is slidably mounted with a slide block, which is connected to the slide frame.

4. A construction electrical lifting device according to claim 1, characterized in that: A side threaded sleeve is slidably installed inside the connecting frame on one side of the robotic arm, and the side threaded sleeve is fixedly connected to the transverse rail frame. Servo motors are symmetrically installed on the top of the connecting frame above the side threaded sleeve. Side threaded rods are threadedly connected inside the side threaded sleeves below the servo motors, and the side threaded rods are all connected to the output end of the servo motors.

5. A construction electrical lifting device according to claim 1, characterized in that: Each of the longitudinal rails above the slide frame is equipped with a variable frequency motor. Each of the upper sliding grooves on one side of the variable frequency motor is slidably fitted with an upper threaded sleeve. The bottom end of the upper threaded sleeve is connected to the clamping arm. Each of the upper threaded sleeves is threaded with an upper threaded rod, and the upper threaded rod is connected to the output end of the variable frequency motor.

6. A construction electrical lifting device according to claim 1, characterized in that: An electric push rod is installed on the side wall of the base frame below the rotating frame, and a rack is installed at the output end of the electric push rod.

7. A construction electrical lifting device according to claim 6, characterized in that: A gear is fitted at the bottom end of the support shaft on one side of the rack, and the rack meshes with the gear.

8. A construction electrical lifting device according to claim 1, characterized in that: A rotary motor is installed inside the rotating box below the robotic arm, and a worm gear is installed at the output end of the rotary motor.

9. A construction electrical lifting device according to claim 8, characterized in that: A worm wheel is movably installed inside the rotating box on one side of the worm, and the worm wheel meshes with the worm. A rotating shaft is installed at the bottom end of the worm wheel, and the rotating shaft extends to the outside of the rotating box and is fixedly connected to the linkage block.

10. A construction electrical lifting device according to claim 1, characterized in that: A remote controller is installed on the top of the mobile trolley on one side of the counterweight, and the output of the remote controller is electrically connected to the input of the robotic arm, stepper motor, servo motor, frequency converter motor, electric push rod, and rotary motor.

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