Body-worn assistance device

Abstract

The utility model belongs to the field of fan tower bolt fastening, relates to a power assisting device, specifically a portable power assisting device, including backpack type main part, the fixed frame is fixedly arranged in backpack type main part, the fixed frame is fixedly arranged with the vertical rod along the height direction setting, the upper end of vertical rod is fixedly arranged with the guide mechanism that extends to the front, the end of guide mechanism is provided with the flexible rope, the end of flexible rope is detachably provided with the lock catch for connecting the load. The utility model has realized the portability and integrated operation ability, provided scientific ergonomics load distribution and fatigue relief, expanded the adaptability simultaneously, improved the reliability, is applicable to the power assisting support in the high altitude and mobile operation.

Description

Technical Field

[0001] This utility model belongs to the field of wind turbine tower bolt fastening, and relates to an assistive device, specifically a portable assistive device. Background Technology

[0002] In various high-altitude work scenarios such as wind power equipment installation, power facility maintenance, and industrial equipment installation and maintenance, workers frequently need to perform operations such as installing and tightening bolts, requiring prolonged periods of holding tools, equipment, or materials such as torque wrenches. For smaller, heavier machinery (torque wrenches used in wind power equipment installation are both large and heavy), two people may even be needed to lift them for operation. This type of work has the following significant drawbacks: First, the shoulder, arm, and back muscles of the workers need to provide continuous static support, which can easily lead to muscle fatigue and strain, and long-term work may cause occupational musculoskeletal diseases. Second, when fatigued, the risk of workers dropping tools or equipment increases significantly, posing a serious safety threat to personnel and equipment below. Therefore, the existing work methods are extremely physically demanding for workers and pose safety hazards.

[0003] Currently, to address the aforementioned issues, the existing technologies mainly offer the following types of auxiliary enhancement and support solutions: The first type is a simple handheld tool holder or boom. These devices are simple in structure and inexpensive to manufacture. However, they still require the operator to provide primary support and balance through their arms, and can only achieve limited weight transfer, failing to fundamentally alleviate muscle fatigue caused by prolonged work. Furthermore, their adjustment range in working height and spatial position is extremely limited, resulting in poor adaptability.

[0004] The second category is fixed robotic arms or small cranes. These devices provide stable support and significant lifting capacity, effectively reducing the burden on personnel. However, they typically suffer from large size and high weight, and require fixed installation on specific foundations or reliance on mobile platforms such as engineering vehicles. This results in extremely poor mobility and portability, making transportation and relocation difficult and deployment time-consuming. Such equipment is almost unsuitable for complex work sites requiring frequent movement, limited space, or access via foot or climbing (such as inside wind turbine nacelles, high-rise building interiors, or narrow tower platforms), severely restricting its application scope. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model aims to provide a portable assistive device that can effectively assist workers in complex high-altitude work scenarios, while also possessing good portability, mobility, and flexibility.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A portable assist device includes a backpack-type main body, a fixed frame is fixedly provided in the backpack-type main body, a vertical pole is fixedly provided on the fixed frame along the height direction, a forward-extending guide mechanism is fixedly provided at the upper end of the vertical pole, a flexible rope is provided at the end of the guide mechanism, and a buckle for connecting a load is detachably provided at the end of the flexible rope.

[0007] As a limitation of this utility model: the guiding mechanism is a hollow arc-shaped tube structure, a flexible rope is threaded through the guiding mechanism, a winding mechanism is fixedly connected to the lower end of the guiding mechanism, the first end of the flexible rope is wound around the output end of the winding mechanism, and the second end of the flexible rope passes through the upper end of the guiding mechanism and is detachably connected to a buckle.

[0008] As a limitation of this utility model: the inner wall of the guiding mechanism is rotatably provided with a number of guiding wheels, and the flexible rope is arranged to pass around the wheel body of the guiding wheel in sequence.

[0009] As a limitation of this utility model: the side wall of the guide wheel is a concave arc shape adapted to the flexible rope.

[0010] As a limitation of this utility model: the winding mechanism includes a housing fixed on the guide mechanism, a motor fixed in the housing, and the first end of the flexible rope wound around the output end of the motor.

[0011] As a limitation of this utility model: a rope control button is fixedly provided on the backpack body, and the rope control button is electrically connected to the motor.

[0012] As a limitation of this utility model: the pole is an electric telescopic pole, and a pole control button is fixed on the backpack-type main body, which is electrically connected to the electric telescopic pole.

[0013] As a limitation of this utility model: a mounting plate and several mounting frames arranged along the height direction are fixed inside the fixed frame, the bottom end of the upright is fixed on the mounting plate, and the pole body of the upright is fixed in the mounting frame.

[0014] As a limitation of this utility model: the flexible rope is a steel wire rope.

[0015] As a limitation of this utility model: the backpack body is provided with a waist locking strap.

[0016] By adopting the above technical solution, the beneficial effects achieved by this utility model compared with the prior art are as follows: (1) This utility model includes a backpack-type main body, a fixed frame, a pole, a guide mechanism, and a flexible rope. For the first time, the support function is integrated with a personal carrying system to form a portable single device. This structure fundamentally overcomes the inherent defects of traditional fixed support equipment, such as large size and poor mobility, allowing operators to carry the complete assist system with them and freely enter and adapt to high-altitude, narrow, and mobile work scenarios, realizing an integrated work mode of "wherever the person goes, the support goes." Furthermore, through the above-mentioned overall structure, the weight of the load is effectively transmitted and distributed to the user's shoulders, hips, and legs through the buckle, flexible rope, guide mechanism, pole, and fixed frame. This completely liberates the user's arms from the heavy static lifting burden, allowing them to focus only on adjusting the posture and fine operation of the load, thereby fundamentally reducing the use of easily fatigued muscles such as the arms and waist, reducing the possibility of occupational injuries, and realizing true ergonomic assistance. (2) This utility model is equipped with a winding mechanism, which enables the operator to quickly adapt to different working points without changing his own posture. The load can be raised, lowered and suspended with just one click by triggering the button. The operation is labor-saving, fast and accurate, which greatly improves the work efficiency and avoids the inconvenience and risk of pulling the rope by hand. In addition, the pole is a telescopic pole, which can adapt to the operators of different heights, further enhancing the flexibility and scene adaptability of the device. (3) This utility model transforms the sliding friction between the flexible rope and the guiding mechanism into rolling friction. This not only makes the rope winding and unwinding smoother and quieter, but also effectively reduces the wear between the rope and the pipe wall, significantly extends the service life of the flexible rope and the guiding mechanism, and improves the reliability of the device.

[0017] In summary, this utility model achieves portability and integrated operation capabilities, provides scientific ergonomic load distribution and fatigue relief, expands adaptability, improves reliability, and is suitable for assistive support in high-altitude and mobile operations. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model; Figure 2 This is a three-dimensional structural diagram of an embodiment of the present utility model excluding the backpack-type main body; Figure 3 This is a schematic diagram of the internal structure of the guiding mechanism and the winding mechanism in an embodiment of this utility model; Figure 4 This is a three-dimensional structural diagram of the guide wheel in an embodiment of the present invention.

[0020] In the picture: 100 - Backpack body, 101 - Wide shoulder straps, 102 - Adjustable waist belt, 103 - Chest strap; 200-Fixed frame, 201-Mounting plate, 202-Mounting frame; 300 - Pole erection; 400 - Guiding mechanism, 401 - Guiding wheel; 500 - Winding mechanism, 501 - Housing, 502 - Motor; 600 - Flexible rope, 601 - Locking buckle. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the portable assistive device described herein is a preferred embodiment and is only used for illustration and explanation of the present invention, and does not constitute a limitation thereof.

[0022] The directional terms or positional relationships used in this utility model, such as "upper," "lower," "front," and "rear," are based on the positional relationships in the accompanying drawings of this utility model. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component must have a specific orientation, or that it must be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the content protected by this utility model. Example

[0023] Please see Figures 1 to 4 The present invention provides a portable assistive device, the core design concept of which is to innovatively integrate the support mechanism with the human carrying system, aiming to provide a portable, labor-saving and efficient load assist solution for workers working at heights, in mobile spaces and in confined spaces.

[0024] The device mainly consists of three functional modules: a backpack-type main body 100, a rigid support system (including a fixed frame 200 and a pole 300), and a load lifting and guiding system (including a guiding mechanism 400, a winding mechanism 500, and a flexible rope 600).

[0025] I. Backpack-style main body 100 like Figure 1 As shown, the backpack-style main body 100 draws inspiration from mature ergonomic backpack designs, but its internal structure is fundamentally different from that of ordinary backpacks. The main function of the backpack-style main body 100 is to comfortably bear the weight of the entire device and scientifically distribute the load force to the shoulders, hips, and legs where the human body is less prone to fatigue. Figure 1 The structure described herein is for reference only. In other embodiments, the structure of the backpack body 100 may adopt any other backpack structure in the prior art, and is not limited to this embodiment. The backpack-style main body 100 includes a pair of wide shoulder straps 101, each at least 20mm thick, filled with high-resilience sponge and covered with breathable mesh padding to increase the contact area and improve comfort. An adjustable waist belt 102, at least 80mm wide, is provided to transfer part of the device's weight to the user's hips. Additionally, a chest strap 103 with a quick-lock buckle (not shown) connects the two shoulder straps, preventing slippage during vigorous activity and enhancing overall stability. The area of ​​the backpack-style main body 100 in contact with the user's back uses a honeycomb-shaped high-elasticity sponge and breathable mesh composite structure, ensuring cushioning comfort while promoting airflow and effectively reducing heat buildup and sweat accumulation on the back during prolonged carrying. The interior of the backpack-style main body 100 houses and secures the aforementioned fixing frame 200, while the exterior may have additional pockets for storing frequently used tools or accessories, achieving functional integration. The goal of this embodiment is to keep the device's weight (excluding load) below 4 kg to ensure good portability. II. Rigid Support System like Figure 2 As shown, the rigid support system is the skeleton connecting the backpack-type main body 100 and the lifting system, and is responsible for transmitting and bearing all load forces.

[0026] Fixed Frame 200: This frame is fixed inside the backpack-type main body 100 and is a cubic frame structure welded or fastened from precision-grade aluminum alloy tubing (such as 6082-T6). The tubing wall thickness is designed to be 1.5 to 2 mm, a design that minimizes weight while ensuring sufficient rigidity to resist deformation. The frame consists of four layers from bottom to top: lower, lower middle, upper middle, and upper, providing not only a stable mounting base but also internal space for storing tools or accessories.

[0027] Upright pole 300: The upright pole 300 is preferably an electrically operated telescopic pole, the bottom end of which is securely mounted to the mounting plate 201 of the lower layer of the fixed frame 200 by bolts. The pole body of the upright pole 300 passes sequentially through and is secured to the upper mounting frame 202 of the fixed frame 200 in the vertical direction. This "one-point fixing, multi-point constraint" installation method greatly enhances the bending stiffness and overall stability of the upright pole 300 under load, preventing it from swaying under load.

[0028] III. Load Lifting and Guiding System This system is the core of achieving load lifting and precise positioning.

[0029] Guide mechanism 400: The guide mechanism 400 is fixed to the upper end of the upright 300. For example... Figure 3As shown, the mechanism is a hollow arc-shaped tube, with a straight lower section and a circular arc upper section. The tube has a square cross-section. Its lower end is fixedly connected to the housing of the winding mechanism 500, and its upper end extends forward (towards the user). Several guide wheels 401 are rotatably mounted on its sidewall via pivots. Figure 4 As shown, the sidewalls of these guide wheels 401 are concave arc shapes that conform to the cross-sectional shape of the flexible rope 600. This structure can transform the sliding friction between the flexible rope 600 and the tube wall into rolling friction.

[0030] Winding mechanism 500: includes a housing 501 fixed to the lower end of guide mechanism 400. Motor 502 is fixed inside the housing. The output shaft of motor 502 is directly or through a reduction mechanism connected to the drum for winding and unwinding flexible rope 600.

[0031] Flexible Rope 600: Made of miniature stainless steel wire rope or high-strength anti-torsion synthetic fiber rope with a breaking strength greater than 2000 kg (such as Dyneema®). Figure 3 As shown, the first end of the flexible rope 600 is wound around the drum at the output end of the motor 50; the rope body passes around the wheel body of each guide wheel 401 in sequence; its second end passes out from the outlet at the upper end of the guide mechanism 400 and is detachably connected to a latch 601 for hanging loads (such as torque wrenches). The structure of the latch 601 is prior art.

[0032] Control System: To achieve "one-button operation," a rope control button (not shown in the figure) and a pole control button (not shown in the figure) are fixed on the shoulder straps of the backpack body 100. The rope control button is electrically connected to the motor 502 and is used to control the extension and retraction of the flexible rope 600. The pole control button is electrically connected to the electric telescopic drive mechanism of the pole 300 and is used to control the raising and lowering of the pole. Both the rope control button and the pole control button include two buttons, and both buttons must be pressed simultaneously to activate the control and prevent accidental activation. In other embodiments, the rope control button and the pole control button can also be located in other easily accessible positions on the backpack body 100.

[0033] Power supply system: A high-energy-density lithium-ion battery pack is used to power the winding mechanism 500 and the upright 300, and it is designed as a quick-detachable module, which is installed in the lower layer of the backpack-type main body 100 to lower the overall center of gravity.

[0034] In other embodiments, one or more overload protection structures may be provided as needed. For example, an independent, normally closed electromagnetic brake may be integrated into the winding mechanism 500, which can immediately lock the drum even if the motor is powered off; or, a mechanical torque limiter or slip clutch may be introduced into the transmission chain of the motor 502, which slips when the torque exceeds a set value, thus protecting the motor and the structure.

[0035] During operation, the user carries and secures the device like a regular backpack. Using the control buttons on the pole, the upright 300 is adjusted to a suitable height, and the load is attached to the locking buckle 601. Then, using the rope control buttons, the motor 502 releases the flexible rope 600, lowering the load to the working position. During operation, the load's weight is transmitted sequentially through the locking buckle 601, flexible rope 600, guide wheel 401, guide mechanism 400, upright 300, fixed frame 200, backpack-style main body 100, shoulder straps 101 / waist belt 102, and finally to the user's shoulders, hips, and legs. The user's arms do not bear any load weight; only minor adjustments and manipulations are required, thus completely avoiding muscle fatigue. After completion, the load and upright are retrieved with a single button press, allowing the user to move to the next workstation.

[0036] In summary, through the above-described specific embodiments, this utility model successfully combines portability, stability, and ease of operation, effectively solving the defects described in the background art. It should be noted that this embodiment can not only be used for torque wrenches during the installation of wind power generation equipment, but also for other heavy tools or tools that need to be held by hand during high-altitude operations. Furthermore, the locking buckle 601 can be adjusted to other connection structures as needed.

Claims

1. A portable assistive device, characterized in that: The backpack-type main body includes a fixed frame, on which a vertical pole is fixed along the height direction. A forward-extending guide mechanism is fixed at the upper end of the vertical pole, and a flexible rope is provided at the end of the guide mechanism. The end of the flexible rope is detachably provided with a buckle for connecting a load.

2. The portable assistive device according to claim 1, characterized in that: The guiding mechanism is a hollow arc-shaped tube structure. A flexible rope is threaded through the guiding mechanism. A winding mechanism is fixedly connected to the lower end of the guiding mechanism. The first end of the flexible rope is wound around the output end of the winding mechanism. The second end of the flexible rope passes through the upper end of the guiding mechanism and is detachably connected to a buckle.

3. The portable assistive device according to claim 2, characterized in that: The inner wall of the guiding mechanism is rotatably equipped with several guide wheels, and flexible ropes are arranged to pass around the wheel bodies of the guide wheels in sequence.

4. The portable assistive device according to claim 3, characterized in that: The sidewall of the guide wheel is a concave arc shape adapted to the flexible rope.

5. The portable assistive device according to claim 2, characterized in that: The winding mechanism includes a housing fixed to the guide mechanism, a motor fixed in the housing, and the first end of the flexible rope wound around the output end of the motor.

6. The portable assistive device according to claim 5, characterized in that: The backpack-style main body is equipped with a rope control button, which is electrically connected to the motor.

7. The portable assistive device according to claim 6, characterized in that: The pole is an electric telescopic pole, and a pole control button is fixed on the backpack-type main body. The pole control button is electrically connected to the electric telescopic pole.

8. The personal assistive device according to any one of claims 1 to 7, characterized in that: A mounting plate and several mounting frames arranged along the height direction are fixed inside the fixed frame. The bottom end of the upright is fixed on the mounting plate, and the upright body is fixed in the mounting frames.

9. The personal assistive device according to any one of claims 1 to 7, characterized in that: The flexible rope is a steel wire rope.

10. The personal assistive device according to any one of claims 1 to 7, characterized in that: The backpack-style main body is equipped with a waist locking strap.

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