Tensile force overload protection device for concurrent rope traction rehabilitation system
An overload protection and rope technology, which is applied in medical science, fractures, etc., can solve the problems of patient injury and excessive tension, and achieve the effects of low cost, improved safety, and wide application range
Active Publication Date: 2015-09-09
HARBIN ENG UNIV
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Problems solved by technology
Since each rope is driven by a motor, excessive tension will inevitably occur during the movement, which may cause injury to the patient in severe cases
Method used
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Embodiment Construction
[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0015] combine Figure 1 to Figure 4 , the present invention includes a binding main body 1, a common point connecting shaft 3 fixedly connected to the outer surface of the binding main body 1, at least two rope tension overloaders 2 which are sequentially sleeved on the common point connecting shaft 3 and installed on the common point The end cap 6 at the end of the connection shaft 3, the end cap 6 plays the role of axial fixation, the two adjacent rope tension overload devices 2 between the rope tension overload device 2 and the set shoulder of the common point connection shaft 3 A cage 4 is arranged between the rope tension overload device 2 and the end cover 6, and balls 5 are uniformly arranged in the middle of each cage 4. Setting the balls 5 can avoid sliding friction, and the cage 4 and the balls 5 can Make independent movem...
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The invention provides a tensile force overload protection device for a rope traction rehabilitation system. The tensile force overload protection device comprises a binding main body, a concurrent connecting shaft and a rope tensile force overload device. The rope tensile force overload device comprises a sleeve, a sliding block, a sliding block spring, a pin tumbler, a pin tumbler spring, a blocking piece and an adjusting nut. The sliding block is provided with a notch. In a normal working state, the sliding block is in the sleeve, the pin tumbler abuts against the notch of the sliding block under the effect of the pin tumbler spring; due to the fact that friction force occurs between the sliding block and the pin tumbler, the sliding block can pop up only when the tensile force is larger than some value, so that the force on a rope is buffered, the effect of protecting a person and the rehabilitation system is achieved; and after maximum tensile force of the rope is eliminated, the sliding block returns to the working position again under the effect of the sliding block spring. The compression amount of the pin tumbler spring can be adjusted by adjusting nuts at the two ends of the sleeve, so that the friction force between the sliding block and the pin tumbler, namely the borne maximum tensile force is adjusted.
Description
technical field [0001] The invention relates to a tension overload protection device, in particular to a tension overload protection device for a common-point rope traction rehabilitation system. Background technique [0002] In recent years, the number of human limb injuries caused by natural disasters, diseases, traffic accidents and other factors has increased day by day, and the sequelae of the injured limbs in different degrees have a certain impact on the daily life of patients. At the same time, the number of aging population in my country is increasing year by year, and limb movement disorder is an important factor affecting the life of the elderly. Rehabilitation robots are used to help patients perform rehabilitation training, which can restore joint and muscle functions and improve physical fitness. The rope is used as the transmission mechanism of the rehabilitation training robot, which has the advantages of fast movement speed, small footprint, good flexibilit...
Claims
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IPC IPC(8): A61F5/042
Inventor 王克义方硕赵文艳魏亚茹
Owner HARBIN ENG UNIV