A new type of tower crane remote control device
By designing support components and center of gravity adjustment components, the stability and accuracy issues of tower crane remote control devices during high-altitude single-hand operation have been resolved, thereby improving the flexibility and safety of high-altitude operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG DAFENG MECHANICAL ENG CO LTD
- Filing Date
- 2025-10-29
- Publication Date
- 2026-07-07
AI Technical Summary
Existing tower crane remote control devices lack stability when operated with one hand at high altitudes, making it difficult to achieve high-precision control. Furthermore, the operator's body posture is limited, making it difficult to flexibly adjust the position and angle of the remote control device.
A remote control device including a support component and a center of gravity adjustment component was designed. The support component provides additional fixed points and angle adjustment through the linkage of a primary pull plate and a secondary pull plate. The center of gravity adjustment component dynamically adjusts the center of gravity of the remote control device through the mechanical linkage of a counterweight and a guide plate.
It significantly improves the stability and accuracy of the remote control device for single-handed operation at high altitudes, reduces operational errors, and enhances the device's anti-interference ability and operational comfort in complex environments.
Smart Images
Figure CN224467407U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of remote control device technology, and in particular to a novel remote control device for tower cranes. Background Technology
[0002] Tower cranes, also known as tower hoists, originated in Western Europe. They are rotating cranes with their booms mounted on the upper part of a tall tower. They have a large working space and are mainly used for the vertical and horizontal transport of materials and the installation of building components in building construction. To improve operational flexibility and safety, remote control devices are commonly used to remotely control the cranes. Existing tower crane remote control devices typically consist of the crane body, a strap, and a corresponding support structure. The operator carries the remote control device through a strap on their neck or shoulder, thereby achieving remote control of the crane.
[0003] In traditional technology, tower crane remote control devices are typically equipped with a strap on one side for workers to wear while climbing scaffolding or working at heights. However, due to the complex environment and numerous obstructions on construction sites, operators often need to climb to a high position to obtain a clear view and perform remote control operations. During this process, workers usually need to hold onto a fixed object with one hand for safety and rely solely on the other hand for remote control. However, the remote control device is large and heavy, making it unstable for single-handed operation, difficult to achieve high-precision control, and prone to operational errors. Furthermore, the operator's body posture is restricted when working at heights, making it difficult to adjust freely. This further increases the difficulty of remote control operation by limiting the position and angle of the remote control device in front of the body.
[0004] Furthermore, we disclose a novel tower crane remote control device to meet the practical needs of existing technologies where it is inconvenient for users to climb to higher positions. Utility Model Content
[0005] In view of this, the purpose of this utility model is to propose a new type of tower crane remote control device to solve the problem of inconvenience for personnel to climb to a high position to use it in the prior art.
[0006] To achieve the above objectives, this utility model provides a novel remote control device for tower cranes, comprising a remote control device body. A hanging strap is provided on one side of the remote control device body, and a notch is provided at the lower center of the hanging strap. A support component is provided inside the notch. The support component is used to adjust the support height and angle of the remote control device body. The support component includes a primary pull plate disposed inside the notch. A damping shaft is provided on one side of the primary pull plate. The primary pull plate is rotatably connected to the remote control device body via the damping shaft. A center of gravity adjustment component is provided at the inner bottom of the remote control device body. When the angle of the remote control device body is adjusted, the center of gravity adjustment component is used to adjust the overall center of gravity of the remote control device body. The center of gravity adjustment component is driven by the rotation of the primary pull plate.
[0007] Preferably, the support assembly further includes a secondary pull plate slidably connected to the lower end of the primary pull plate. A slider is fixedly connected to one side of the middle of the upper surface of the secondary pull plate. An opening groove is formed in the middle of the primary pull plate. The slider is slidably connected in the opening groove. A limiting plate is fixedly connected to the upper end of the slider. A limiting groove is formed in the middle of the primary pull plate at the upper end of the opening groove. The limiting plate is slidably connected in the limiting groove. The length of the limiting groove is greater than the length of the slider.
[0008] Preferably, the slider has circular holes on both sides, and a telescopic spring is fixedly connected to the inner wall of the circular hole. A top post is fixedly connected to the end of the telescopic spring away from the inner wall of the circular hole. The end of the top post away from the telescopic spring is spherical. Multiple grooves are formed on the inner walls of both sides of the opening groove. Rounded corners are formed at the corners of the outer walls of the grooves. The spherical end of the top post contacts the outer wall of the groove.
[0009] Preferably, a magnetic block is provided on one side of the lower middle portion of the secondary pull plate, and a rotating plate is rotatably connected to the side of the lower middle portion of the secondary pull plate away from the magnetic block.
[0010] Preferably, the center of gravity adjustment component includes a counterweight block slidably connected to the middle of the bottom surface of the remote control device body. Both ends of one side face of the counterweight block are fixedly connected to a return spring. The ends of the two return springs away from the counterweight block are fixedly connected to a fixing seat. The lower ends of the two fixing seats are fixedly connected to the inner bottom surface of the remote control device body.
[0011] Preferably, a guide plate is fixedly connected to the end of the counterweight away from the fixed seat. The guide plate is L-shaped, and the end of the guide plate away from the counterweight is an inclined surface. Both ends of the first-stage pull plate located on one side of the damping shaft are fixedly connected to connecting rods. The upper ends of the two connecting rods are engaged and rotatably connected to rollers, and the rollers are in contact with the inclined surface on the guide plate.
[0012] Preferably, the spring force exerted by the return spring on the counterweight is less than the resistance value exerted by the damping shaft on the first-stage pull plate.
[0013] The beneficial effects of this utility model are:
[0014] 1. This tower crane remote control device is equipped with support components, mainly including a primary pull plate, a secondary pull plate, magnetic blocks, and a rotating plate, which effectively improves the stability and operational flexibility of the remote control device during operator climbing and high-altitude operations. Specifically, the magnetic blocks attract the device to the parts in front of the operator, providing additional reliable fixing points and significantly reducing the risk of device swaying or falling off due to single-handed operation and complex construction site environments. At the same time, the pull-out, telescopic, and rotating primary and secondary pull plates allow the operator to flexibly adjust the height and angle of the device even with limited body posture to adapt to the optimal operating field of vision, thereby improving operating comfort and ensuring control accuracy.
[0015] 2. The tower crane remote control device is equipped with a center of gravity adjustment component, which mainly includes a counterweight, a return spring, a guide plate, a connecting rod, and rollers. This significantly enhances the anti-interference capability and operational stability of the remote control device during attitude adjustment. When the first-stage pull plate rotates, the component can automatically drive the counterweight to slide through mechanical linkage, compensating for the torque difference caused by changes in the device angle in real time, and dynamically stabilizing the overall center of gravity. This feature effectively suppresses device swaying that may be caused by restricted body posture or single-handed operation during high-altitude operations, reduces the risk of operational errors, and provides a key guarantee for high-precision control. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in this utility model 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 for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0018] Figure 2 This is a partial three-dimensional structural diagram of the present invention;
[0019] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the present invention;
[0020] Figure 4 This is a schematic diagram of the installation of the primary and secondary tension plates of this utility model;
[0021] Figure 5 This is a three-dimensional schematic diagram of the internal structure of the slider of this utility model;
[0022] Figure 6 This is a schematic diagram of the installation of the counterweight block of this utility model.
[0023] The diagram is marked as follows:
[0024] 1. Remote control device body; 2. Hanging strap; 3. First-stage pull plate; 4. Second-stage pull plate; 5. Magnetic block; 6. Rotating plate; 7. Damping rotating shaft; 8. Opening slot; 9. Groove; 10. Counterweight; 11. Limiting slot; 12. Limiting plate; 13. Slider; 14. Telescopic spring; 15. Top column; 16. Return spring; 17. Guide plate; 18. Connecting rod; 19. Roller; 20. Fixed base. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.
[0026] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0027] like Figures 1 to 6 As shown, a novel tower crane remote control device includes a remote control device body 1. A hanging strap 2 is provided on one side of the remote control device body 1. A notch is provided in the middle of the lower end of the hanging strap 2. A support component is provided inside the notch. The support component is used to adjust the support height and angle of the remote control device body 1. The support component includes a primary pull plate 3 provided inside the notch. A damping shaft 7 is provided on one side of the primary pull plate 3. The primary pull plate 3 is rotatably connected to the remote control device body 1 through the damping shaft 7. A center of gravity adjustment component is provided at the bottom inner part of the remote control device body 1. When the angle of the remote control device body 1 is adjusted, the center of gravity adjustment component is used to adjust the overall center of gravity of the remote control device body 1. The center of gravity adjustment component is driven by the rotation of the primary pull plate 3.
[0028] The main body of the remote control device 1 integrates a circuit board, control buttons, a joystick, a signal transmitting module, a power supply module, and possibly an ultrasonic transceiver or a wireless communication module. Its remote control function primarily relies on the internal circuit board receiving operation commands input by the user via buttons or a joystick. These commands are processed, adjusted, and then transmitted by the transmitting module. The receiver built into the control box on the tower crane receives these signals, decodes them, and converts them into control commands, driving the corresponding mechanisms of the tower crane to move, thereby achieving remote operation of the tower crane.
[0029] For ease of carrying, a strap 2 is provided on one side of the remote control unit 1. A notch is cut in the middle of the lower end of the strap 2, into which a support component is installed. This component is used to adjust the support height and angle of the remote control unit 1. The support component includes a primary pull plate 3, one side of which is rotatably connected to the remote control unit 1 via a damping pivot 7. This allows the user to adjust the control angle as needed. The damping pivot 7 is designed with a damping torque controlled within the range of 0.5–1.2 N·m. This ensures that the pivot provides sufficient resistance to prevent accidental deflection during one-handed operation (minimum damping torque > 0.5 N·m) while avoiding excessive resistance that would make adjustment difficult. During assembly, it is necessary to ensure that the damping pivot 7 is properly aligned with the remote control unit 1. The coaxiality tolerance of the mounting holes in the remote control device body 1 is ≤0.05mm. Molybdenum disulfide grease is applied to reduce friction loss and extend service life. Crucially, the center of gravity adjustment component, located at the inner bottom of the remote control device body 1, dynamically adjusts the overall center of gravity of the device body 1 when the user adjusts the angle of the remote control device via the first-stage pull plate 3. This enhances the stability of single-handed operation. When the user pulls the first-stage pull plate 3 to rotate it around the damping shaft 7, the connecting rod 18 drives the roller 19 to roll along the inclined surface of the guide plate 17, thereby pushing or releasing the counterweight 10, causing it to slide against the spring force of the return spring 16. This displacement effectively compensates for torque changes caused by changes in the control angle, suppresses device swaying, and significantly improves the stability and accuracy of single-handed operation during high-altitude work.
[0030] In summary, this remote control device achieves remote control functionality through internal circuitry and signal transmission mechanisms. Furthermore, by utilizing mechanically linked center-of-gravity adjustment and support components, it effectively solves the challenges of stability and accuracy when operating the remote control device with one hand at height in complex construction site environments.
[0031] Furthermore, such as Figures 1 to 5As shown, the support assembly also includes a secondary pull plate 4 slidably connected to the lower end of the primary pull plate 3. A slider 13 is fixedly connected to one side of the upper end face of the secondary pull plate 4. An opening groove 8 is opened in the middle of the primary pull plate 3, and the slider 13 is slidably connected in the opening groove 8. A limiting plate 12 is fixedly connected to the upper end of the slider 13. A limiting groove 11 is opened in the middle of the primary pull plate 3 at the upper end of the opening groove 8. The limiting plate 12 is slidably connected in the limiting groove 11. The length of the limiting groove 11 is greater than the length of the slider 13. Both sides of the slider 13 are open. A circular hole is provided, and a telescopic spring 14 is fixedly connected to the inner wall of the circular hole. A top post 15 is fixedly connected to the end of the telescopic spring 14 away from the inner wall of the circular hole. The end of the top post 15 away from the telescopic spring 14 is spherical. Multiple grooves 9 are provided on both sides of the inner wall of the opening groove 8. Rounded corners are provided at the corners of the outer walls of the grooves 9. The spherical end of the top post 15 is in contact with the outer wall of the groove 9. A magnetic block 5 is provided on one side of the lower middle part of the secondary pull plate 4. A rotating plate 6 is rotatably connected to the side of the lower middle part of the secondary pull plate 4 away from the magnetic block 5.
[0032] The support assembly is an important component of this remote control device, mainly comprising a primary pull plate 3 and a secondary pull plate 4 slidably connected to its lower end. A slider 13 is fixedly connected to one side of the upper end face of the secondary pull plate 4. The slider 13 is slidably connected in an opening groove 8 in the middle of the primary pull plate 3. A limiting plate 12 is fixedly connected to the upper end of the slider 13. A limiting groove 11 is opened in the middle of the primary pull plate 3 at the upper end of the opening groove 8. The limiting plate 12 is slidably connected in the limiting groove 11, and the length of the limiting groove 11 is designed to be greater than the length of the slider 13 to ensure that the slider 13 and the limiting plate 12 have sufficient sliding stroke for further precise positioning and holding during the sliding process. The clearance between the slider 13 and the opening groove 8 is controlled at 0.1-0.2 mm. The surface is anodized to reduce the coefficient of friction (μ < 0.15). The roller 19 uses a PTFE-coated bearing with rolling resistance < 0.8 N. Circular holes are provided on both sides of the slider 13. A telescopic spring 14 is fixedly connected to the inner wall of the circular hole. A top post 15 is fixedly connected to the other end of the telescopic spring 14. The end of the top post 15 away from the telescopic spring 14 is designed as a spherical shape. Multiple sets of grooves 9 are provided on the inner walls of both sides of the opening groove 8. The corners of the outer walls of these grooves 9 are all rounded. The spherical end of the top post 15 can contact the outer walls of these grooves 9 and extend... The spring 14, under its elastic force, embeds itself into the groove 9, forming an effective positioning mechanism. A magnetic block 5 is located on one side of the lower center of the secondary pull plate 4, while a rotating plate 6 is rotatably connected to the other side. The magnetic block 5 uses a neodymium iron boron N35 grade permanent magnet, with an attraction force of 20-30N between it and the mating parts. Simultaneously, the magnetic circuit design includes a 0.5mm thick soft magnetic shielding layer to prevent magnetic field interference with internal electronic components. This design, in conjunction with another magnetic block 5 worn in front of the operator, allows for mutual attraction during climbing, significantly enhancing the overall stability of the remote control device during climbing and high-altitude operations. This effectively prevents the device from swinging or falling off due to single-handed operation or body swaying. The rotating plate 6... It can be pulled out, and its tail end can rest against the user's body. Working together with the magnetic structure, it forms multi-point support. The first-level pull plate 3 can rotate relative to the second-level pull plate 4, so that the user can flexibly change the height and tilt angle of the remote control device relative to the body by adjusting the angle of the first-level pull plate 3 and the extension length of the second-level pull plate 4 without significantly changing the body posture. This adapts to different working fields of vision and operational needs, achieves high-precision control, and reduces operational errors. The support component has an ingenious structural design, combining magnetic and non-magnetic auxiliary fixation, and linking extension and rotation adjustment, which greatly improves the ease of operation, stability, and safety of the tower crane remote control device in complex high-altitude environments.
[0033] Furthermore, such as Figures 3 to 6As shown, the center of gravity adjustment assembly includes a counterweight 10 slidably connected to the middle of the bottom surface of the remote control device body 1. Both ends of one side face of the counterweight 10 are fixedly connected to a return spring 16. The ends of the two return springs 16 away from the counterweight 10 are fixedly connected to a fixed seat 20. The lower ends of the two fixed seats 20 are fixedly connected to the bottom surface of the remote control device body 1. The end of the counterweight 10 away from the fixed seat 20 is fixedly connected to a guide plate 17. The guide plate 17 is L-shaped and the end of the guide plate 17 away from the counterweight 10 is an inclined surface. The first-stage pull plate 3 is located on one side of the damping shaft 7 and both ends are fixedly connected to a connecting rod 18. The upper ends of the two connecting rods 18 are engaged and rotatably connected to a roller 19. The roller 19 is in contact with the inclined surface on the guide plate 17. The elastic force of the return spring 16 acting on the counterweight 10 is less than the resistance value of the damping shaft 7 acting on the first-stage pull plate 3.
[0034] The center-of-gravity adjustment component is the core part of the remote control device of this utility model to achieve operational stability. This component mainly includes a counterweight 10, a return spring 16, a fixed base 20, a guide plate 17, a connecting rod 18, and a roller 19. The counterweight 10 is slidably connected to the center of the bottom surface of the remote control device body 1. A return spring 16 is fixedly connected to each end of one side of the counterweight 10. The return spring 16 is made of stainless steel with a stiffness coefficient of 8-12 N / mm and a preload of 2-3 mm. This parameter ensures that the counterweight 10 can automatically return to its original position when the tilt angle is ≤30°, and that the maximum compression of the spring does not exceed 60% of its free length. The stiffness coefficient of the spring 14 is 0.3–0.5 N / mm. The contact pressure between the spherical end of the top post 15 and the groove 9 is controlled at 1.5–2.5 N, ensuring a clear feel and preventing accidental slippage when the secondary pull plate 4 is segmented and positioned. The other end of the return spring 16 is connected to the fixed base 20 fixedly connected to the bottom surface of the remote control device body 1. An L-shaped guide plate 17 is fixedly connected to the end of the counterweight 10 away from the return spring 16. The slope angle of the guide plate 17 is designed to be 15°–25°. This angle range allows the roller 19 to drive the counterweight 10 to move 20–30 mm within a slope travel of 10–15 mm. The counterweight 10, with a mass of 15% to 20% of the total weight, is made of tungsten alloy to reduce its size. Its sliding stroke limit tolerance is ±0.1mm to ensure accurate center of gravity adjustment response. The guide plate 17, away from the counterweight 10, is machined with an inclined surface. Both ends of the first-stage pull plate 3, located on one side of the damping shaft 7, are fixedly connected to connecting rods 18. The upper end of the connecting rods 18 is rotatably connected to a roller 19, which contacts the inclined surface of the guide plate 17. When the user adjusts the angle of the first-stage pull plate 3, it rotates around the damping shaft 7. The damping shaft 7 provides a certain rotational resistance. This rotation... The connecting rod 18 drives the roller 19 to roll. The roller 19 moves along the inclined surface of the guide plate 17, thereby overcoming the elastic force of the return spring 16. Its preset elastic force value is less than the resistance value of the damping shaft 7, pushing or releasing the counterweight 10, causing it to slide on the bottom surface of the remote control device body 1. This displacement changes the overall center of gravity distribution of the remote control device, which can dynamically compensate for the torque changes that may occur due to the angle change of the first-stage pull plate 3 and the user's single-hand operation, effectively suppressing device shaking, significantly enhancing the anti-interference ability of the remote control device and the stability of single-hand operation during high-altitude operations, and providing a key guarantee for achieving high-precision control.
[0035] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.
[0036] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A novel remote control device for tower cranes, characterized in that: The device includes a remote control body (1), a strap (2) is provided on one side of the remote control body (1), a notch is provided at the middle of the lower end of the strap (2), a support component is provided inside the notch, the support component is used to adjust the support height and angle of the remote control body (1), the support component includes a first-stage pull plate (3) provided inside the notch, a damping shaft (7) is provided on one side of the first-stage pull plate (3), the first-stage pull plate (3) is rotatably connected to the remote control body (1) through the damping shaft (7), a center of gravity adjustment component is provided at the bottom of the remote control body (1), when the angle of the remote control body (1) is adjusted, the center of gravity adjustment component is used to adjust the overall center of gravity of the remote control body (1), the center of gravity adjustment component is driven by the rotation of the first-stage pull plate (3).
2. The novel tower crane remote control device according to claim 1, characterized in that: The support assembly also includes a secondary pull plate (4) slidably connected to the lower end of the primary pull plate (3). A slider (13) is fixedly connected to one side of the middle of the upper end face of the secondary pull plate (4). An opening groove (8) is opened in the middle of the primary pull plate (3). The slider (13) is slidably connected in the opening groove (8). A limiting plate (12) is fixedly connected to the upper end of the slider (13). A limiting groove (11) is opened at the upper end of the opening groove (8) in the middle of the primary pull plate (3). The limiting plate (12) is slidably connected in the limiting groove (11). The length of the limiting groove (11) is greater than the length of the slider (13).
3. A novel tower crane remote control device according to claim 2, characterized in that: Both sides of the slider (13) are provided with circular holes. A telescopic spring (14) is fixedly connected to the inner wall of the circular hole. A top post (15) is fixedly connected to the end of the telescopic spring (14) away from the inner wall of the circular hole. The end of the top post (15) away from the telescopic spring (14) is spherical. Both sides of the inner wall of the opening groove (8) are provided with multiple grooves (9). The corner of the outer wall of the groove (9) is provided with rounded corners. The spherical end of the top post (15) is in contact with the outer wall of the groove (9).
4. A novel tower crane remote control device according to claim 3, characterized in that: A magnetic block (5) is provided on one side of the lower middle part of the secondary pull plate (4), and a rotating plate (6) is rotatably connected on the side of the lower middle part of the secondary pull plate (4) away from the magnetic block (5).
5. A novel tower crane remote control device according to claim 1, characterized in that: The center of gravity adjustment assembly includes a counterweight (10) slidably connected to the middle of the inner bottom surface of the remote control device body (1). Both ends of one side end face of the counterweight (10) are fixedly connected to a return spring (16). The ends of the two return springs (16) away from the counterweight (10) are fixedly connected to a fixing seat (20). The lower ends of the two fixing seats (20) are fixedly connected to the inner bottom surface of the remote control device body (1).
6. A novel tower crane remote control device according to claim 5, characterized in that: The counterweight (10) is fixedly connected to a guide plate (17) at one end away from the fixed seat (20). The guide plate (17) is L-shaped and the end of the guide plate (17) away from the counterweight (10) is an inclined surface. The first-stage pull plate (3) is located on one side of the damping shaft (7) and both ends are fixedly connected to connecting rods (18). The upper ends of the two connecting rods (18) are engaged and rotatably connected to rollers (19). The rollers (19) are in contact with the inclined surface on the guide plate (17).
7. A novel tower crane remote control device according to claim 6, characterized in that: The elastic force of the return spring (16) acting on the counterweight (10) is less than the resistance of the damping shaft (7) acting on the first-stage pull plate (3).