CN101966382B - Pneumatic control weight reduction supporting system - Google Patents

Abstract

A pneumatically controlled weight-reducing support system belongs to the technical field of rehabilitation medical equipment. The invention can control the tension value within a certain range to achieve constant tension control. The present invention comprises a frame with a base, which is characterized in that a first fixed pulley and a second fixed pulley are arranged on the frame, a cylinder is arranged on the base of the frame, a movable pulley is arranged on the piston rod of the cylinder, and a movable pulley is arranged on the cylinder rod. The bases on both sides are respectively provided with a third fixed pulley and a fourth fixed pulley, and a winch is arranged on the side of the fourth fixed pulley; The second fixed pulley, the third fixed pulley, the movable pulley, and the fourth fixed pulley are connected with the capstan; a position sensor is installed on the cylinder, and the cylinder is respectively connected with the pressure sensor and the pneumatic control valve, and the pneumatic control valve is connected with the air pump station; The force sensor, the position sensor, the pressure sensor, the pneumatic control valve and the winch are respectively connected with the computer.

Description

A pneumatically controlled weight-reducing support system

technical field

The invention belongs to the technical field of rehabilitation medical equipment, and in particular relates to a pneumatic control weight loss support system.

Background technique

At present, many countries have begun to enter the aging society. Diseases, disasters and other factors have formed a large number of disabled groups, who need a lot of rescue and medical care services. There are a large number of patients with inconvenient movement or paralysis of the lower limbs caused by spinal or brain injuries. A better method of physical rehabilitation for these patients is to carry out gait rehabilitation training. The use of the weight loss support system (Partial Body Weight Support, PBWS, proposed in 1986) in gait rehabilitation training can reduce the burden on the patient and achieve a more effective rehabilitation effect. In the 21st century, with the development of rehabilitation technology, weight loss support system has been more and more widely used clinically. It has developed from the early form of a single fixed frame plus a sling to the current air pressure weight loss system, which makes the weight loss support treatment more diversified. A large number of literatures have reported that PBWS has great advantages over traditional treatment in terms of restoring walking ability, correcting gait, improving balance, reducing muscle spasm and reducing cardiopulmonary load. safety. Applying computer technology to the weight loss support system can record the treatment data during the training process in detail and objectively for the rehabilitation physician to analyze and evaluate the effect of rehabilitation training.

At present, the existing weight-reducing support systems include: ①Static weight-reducing support system. The main disadvantage of this system is that since the rope length is fixed when the object moves, the center of mass does not move up and down when the object moves, and the tension changes greatly; ②Passive The main advantage of this system is that it can make the object move up and down when it is moving. The main disadvantage of this system is that due to the inertial force when the object is moving, the tension value of the rope changes randomly, and due to the balance The weight of the block is discrete, so the tension value is discrete and cannot be adjusted to any value, but only a few constant values; ③Passive spring weight reduction support system, the main advantage of this system is that the inertial force can be ignored, the system’s The main disadvantage is that due to the use of springs, the load range is small, and the tension value of the system changes when the center of gravity of the object moves up and down.

Contents of the invention

Aiming at the deficiencies of the existing weight-reducing support system, the present invention provides a pneumatically controlled weight-reducing support system; the system is a closed-loop active control, which can control the tension value of the weight-reducing support system within a certain range to achieve constant tension control. Purpose.

In order to achieve the above object, the present invention adopts the following technical solution, a pneumatically controlled weight-reducing support system, including a frame with a base, which is characterized in that a first fixed pulley and a second fixed pulley are arranged on the frame, A cylinder is arranged on the base of the cylinder, a movable pulley is arranged on the piston rod of the cylinder, a third fixed pulley and a fourth fixed pulley are respectively arranged on the bases on both sides of the cylinder, and a winch is arranged on the side of the fourth fixed pulley; The straps below the frame are connected to the capstan via the force sensor, the first fixed pulley, the second fixed pulley, the third fixed pulley, the movable pulley, and the fourth fixed pulley through the connecting rope; a position sensor is installed on the cylinder, The cylinder is respectively connected with a pressure sensor and a pneumatic control valve, and the pneumatic control valve is connected with an air pump station; the force sensor, position sensor, pressure sensor, pneumatic control valve and winch are respectively connected with a computer.

The pneumatically controlled weight-reducing support system can also be provided with a monitoring device, which is connected with the computer; used for real-time monitoring of the movement of the object. the

Beneficial effects of the present invention:

1. The weight-reducing support system of the present invention is a closed-loop active control, which can control the tension value of the weight-reducing support system within a certain range, achieves the purpose of constant tension control, and has high control accuracy;

2. The weight-reducing support system of the present invention can realize continuously changing tension of the weight-reducing support, and is suitable for objects of different weights;

3. The weight-reducing support system of the present invention is safe and reliable, easy to disassemble and assemble, and can protect the safety of users in all directions.

Description of drawings

Fig. 1 is the structural representation of the weight reduction support system of the present invention;

In the figure, 1—force sensor, 2—connecting rope, 3—first fixed pulley, 4—second fixed pulley, 5—third fixed pulley, 6—moving pulley, 7—fourth fixed pulley, 8—winch, 9 —Position sensor, 10—Cylinder, 11—Pressure sensor, 12—Pneumatic control valve, 13—Pump station, 14—Computer, 15—Treadmill, 16—Treadmill controller, 17—Strap, 18—Guard rail, 19— Monitoring device, 20—frame, 21—base.

Detailed ways

Below in conjunction with accompanying drawing, the present invention will be further described:

As shown in Figure 1, a kind of pneumatically controlled weight reduction support system includes a frame 20 with a base 21, on which a first fixed pulley 3 and a second fixed pulley 4 are arranged, on the base 21 of the frame 20 Cylinder 10 is arranged on the top, movable pulley 6 is arranged on the piston rod of cylinder 10, the third fixed pulley 5 and the fourth fixed pulley 7 are respectively arranged on the base 21 on both sides of cylinder 10, on the side of the fourth fixed pulley 7 A winch 8 is provided on the other side; the strap 17 arranged at the bottom of the frame 20 is sequentially passed through the force sensor 1, the first fixed pulley 3, the second fixed pulley 4, the third fixed pulley 5, the movable pulley 6, and the fourth fixed pulley through the connecting rope 2 7 is connected with winch 8; Position sensor 9 is installed on described cylinder 10, and described cylinder 10 is connected with pressure sensor 11 and pneumatic control valve 12 respectively, and described pneumatic control valve 12 is connected with air pump station 13; Described force sensor 1, position sensor 9, pressure sensor 11, pneumatic control valve 12 and winch 8 are connected with computer 14 respectively; Wherein, described position sensor 9 is used for adjusting the initial position of cylinder 10 piston rods, and described pressure sensor 11 is used to measure the pressure in the cylinder 10 to monitor whether the system is operating normally.

There are two control modes of the winch 8, namely: manual control and servo motor control.

The pneumatically controlled weight-reducing support system can also be provided with a monitoring device 19, which is connected to the computer 14 for real-time monitoring of the movement of the object; Automatically take effective measures to prevent accidental damage to the subject itself.

Below in conjunction with accompanying drawing, the one-time use process of the present invention is illustrated:

During use, a treadmill 15 can be arranged under the straps 17 of the weight loss support system of the present invention, a guardrail 18 is arranged on the side of the treadmill 15, and the treadmill controller 16 is connected with the computer 14 .

When the object wears the braces 17 of the weight loss support system of the present invention and moves on the treadmill 15, the force sensor 1 transmits the tension experienced by the object to the computer 14; the computer 14 compares the received tension value with a predetermined value, thereby According to the comparison result, the opening of the pneumatic control valve 12 is controlled; then the air pressure of the cylinder 10 is controlled, so that the movable pulley 6 on the piston rod of the cylinder 10 moves up and down to control the tension, and finally the tension on the object reaches a predetermined value.

The weight loss support system of the present invention takes the active control of constant tension as the core, and controls the tension by controlling the opening of the pneumatic control valve 12, so as to achieve the purpose of constant weight loss for the subject and improve the effectiveness of rehabilitation training. the

Claims (2)

1. pneumatic control loss of weight support system; Comprise frame with base; It is characterized in that frame is provided with first fixed pulley and second fixed pulley, the base of frame is provided with cylinder, and the piston rod of cylinder is provided with movable pulley; On the base of cylinder both sides, be respectively arranged with the 3rd fixed pulley and the 4th fixed pulley, be provided with capstan winch in the side of the 4th fixed pulley; The braces that is arranged on the frame below is connected with capstan winch through power sensor, first fixed pulley, second fixed pulley, the 3rd fixed pulley, movable pulley, the 4th fixed pulley through connection cord successively; On said cylinder, position sensor is installed, said cylinder is connected with pneumatic control valve with pressure sensor respectively, and said pneumatic control valve is connected with air pump station; Said power sensor, position sensor, pressure sensor, pneumatic control valve and capstan winch are connected with computer respectively; When the braces of wearing the loss of weight support system when object moved on treadmill, the power sensor tension force that object is suffered sent computer to; Computer compares tension value that receives and predetermined value, thereby controls the opening amount size of pneumatic control valve according to result relatively; And then the air pressure of control cylinder, make the movable pulley on the piston rod of cylinder move up and down control tension force, make the suffered tension force of object reach predetermined value at last.

2. a kind of pneumatic control loss of weight support system according to claim 1 is characterized in that said pneumatic control loss of weight support system also is provided with monitoring arrangement, and said monitoring arrangement is connected with said computer.

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