Intelligent traction bed capable of automatically adjusting traction force

Abstract

The invention provides an intelligent traction bed capable of automatically adjusting traction force, and relates to the technical field of medical traction beds, the intelligent traction bed comprises a traction bed base, a fixed bed frame and a floating bed frame, and the floating bed frame is provided with a sliding bed frame and a corresponding body part placing pad. The fixed bed frame and the floating bed frame are elastically connected through the first spring, the floating bed frame is pressed downwards through the body weight of a patient, the driving gear and the driving rack are meshed to drive the driving shaft to rotate, the driving lead screw rotates through one-way transmission of the first ratchet disc and the second ratchet disc, and therefore the sliding bed frame slides to pull and stretch the spine. The friction force between the friction disc and the force adjusting wheel is adjusted through the force adjusting hand wheel, the speed reducer, the friction force adjusting screw rod and the like, the traction force is controlled, and compared with a traditional traction bed depending on overload protection of a pressure sensor, the risk that the traction force is too large is avoided from the source, treatment safety is guaranteed, and precise and safe spine traction treatment is provided.

Description

Technical Field

[0001] The present invention relates to the technical field of medical traction beds, and particularly to an intelligent traction bed with automatic traction force adjustment. Background Art

[0002] A traction bed is a medical device used to assist in the treatment of spinal diseases such as lumbar disc herniation and cervical spondylosis. By stretching and pulling the patient's body, it helps to adjust the position of spinal joints, relieve the pressure on the intervertebral discs, alleviate pain, and improve joint mobility. Its working principle is mainly based on the traction principle in mechanics. A specific device applies a pulling force to the patient's body to increase the spinal space, thereby reducing the compression on the nerves. During the treatment process using a traction bed, controlling the traction force is crucial. An appropriate traction force can effectively improve the patient's symptoms and promote recovery; if the force is too small, the expected treatment effect cannot be achieved; if the force is too large, it may cause secondary injuries such as muscle strains and joint injuries, and even exacerbate the condition.

[0003] Currently, the common traction beds on the market mainly monitor the force during the traction process through pressure sensors and implement overload protection in combination with preset safety thresholds. When the sensor detects that the traction force exceeds the set value, the control system will automatically stop the traction or reduce the force. For example, some electric traction beds are equipped with high-precision pressure sensors to collect traction force data in real time and compare it with the preset safety parameters. Once an abnormality occurs, the protection mechanism is immediately triggered. However, this protection method based on pressure sensors has certain limitations. On the one hand, the accuracy of the pressure sensor itself is easily affected by environmental factors. For example, changes in temperature and humidity may cause measurement errors, affecting the accuracy of traction force control. On the other hand, this "post-protection" mechanism intervenes only after the traction force exceeds the safe range, and it is impossible to avoid the risks brought by excessive force from the root, resulting in certain safety hazards and being difficult to meet the demand for precise control of traction force. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent traction bed with automatic traction force adjustment to solve the problem of certain danger existing in the traction force control of traditional traction beds mentioned in the above background.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is an intelligent traction bed with automatically adjustable traction force, comprising: a traction bed base, on which a fixed bed frame is rotatably connected; an elastic connection structure is provided between the fixed bed frame and a floating bed frame, enabling the floating bed frame to float up and down relative to the fixed bed frame, providing a basis for generating traction force through the patient's body weight in the subsequent process; a torso placement pad is fixedly connected to the fixed bed frame for supporting the patient's torso; a sliding bed frame is slidably connected to the floating bed frame, and a hip placement pad is fixedly connected to the sliding bed frame for supporting the patient's hips; one end of the sliding bed frame is rotatably connected to a leg placement pad for supporting the patient's legs; a foot fixing rod is fixedly connected to one side of the leg placement pad for fixing the patient's feet to ensure the stability of body parts during traction; a driving lead screw is rotatably connected to the floating bed frame through a bearing block; a lead screw nut is fixedly connected to the bottom of a sliding plate, and the driving lead screw passes through the lead screw nut and is in threaded transmission connection with the lead screw nut. The threaded transmission structure of the driving lead screw and the lead screw nut can convert the rotational motion of the driving lead screw into the linear motion of the sliding plate, thereby driving the sliding bed frame to slide; the floating bed frame is also slidably connected to a driving shaft through a sliding bearing block, the driving shaft is coaxial with the driving lead screw, a driving gear is fixedly connected to the driving shaft, and a driving rack is fixedly connected to the fixed bed frame. The driving rack and the driving gear are meshed with each other. The meshing of the driving gear and the driving rack can drive the driving shaft to rotate when the floating bed frame floats up and down. One end of the driving shaft is fixedly connected to a first ratchet disc, and one end of the driving lead screw is fixedly connected to a second ratchet disc. The first ratchet disc and the second ratchet disc are used to achieve one-way transmission, ensuring that the driving shaft can drive the driving lead screw to rotate when rotating, and no power is transmitted in the reverse direction. Further, an adjustment rotating shaft is provided on the traction bed base, and the traction bed base is rotatably connected to the fixed bed frame through the adjustment rotating shaft. The adjustment rotating shaft is used to realize the rotation of the fixed bed frame relative to the traction bed base, so as to adjust the angle of the fixed bed frame. A set of side soft pads are fixedly connected to both sides of the fixed bed frame respectively. The side soft pads can provide comfortable support and play a certain protective role on both sides of the patient's body. An armpit fixing rod is rotatably connected to the side soft pads, and the armpit fixing rod is used to clamp the patient's armpits to fix the patient's torso and ensure the stability of the torso position during traction. Further, the traction bed base is rotatably connected to the fixed bed frame through the adjustment rotating shaft, and an electric telescopic rod is rotatably connected to the bottom of the fixed bed frame. The other end of the electric telescopic rod is rotatably connected to the traction bed base. The electric telescopic rod can adjust the angle of the fixed bed frame through telescopic movement to keep it in a horizontal or other suitable position to meet the needs of different patients. Furthermore, a floating bed frame is elastically connected to the fixed bed frame through a first spring. The first spring provides elastic support for the floating bed frame, enabling it to float up and down relative to the fixed bed frame. Four lifting sleeves are fixedly connected to the fixed bed frame by bolts, and four lifting tubes are fixedly connected to the bottom of the floating bed frame by bolts. The lifting tubes are inserted into the lifting sleeves, and the first spring is arranged between the lifting sleeves and the lifting tubes. The cooperation between the lifting sleeves and the lifting tubes provides guidance for the up and down floating of the floating bed frame, ensuring a smooth floating process. At the same time, the first spring can play a buffering role when the floating bed frame is pressed down or rises. Furthermore, a first bevel gear is fixedly connected to the driving lead screw. A position adjustment shaft is rotatably connected to the floating bed frame through a bearing block. The position adjustment shaft is perpendicular to the driving lead screw. A second bevel gear is fixedly connected to one end of the position adjustment shaft. The second bevel gear meshes with the first bevel gear. Through the meshing of the bevel gears, the rotation of the position adjustment shaft can be transmitted to the driving lead screw. A position adjustment handwheel is fixedly connected to the other end of the position adjustment shaft. The position adjustment handwheel is used to manually rotate the position adjustment shaft, thereby driving the driving lead screw to rotate, realizing the manual adjustment of the position of the sliding bed frame, and facilitating the adjustment to a suitable initial position before use. Furthermore, one-way ratchets are machined on both the first ratchet disc and the second ratchet disc. The one-way ratchets of the first ratchet disc and the second ratchet disc are mutually engaged and the tooth tips face in opposite directions. This one-way ratchet structure enables the driving shaft to drive the driving lead screw to rotate only in one direction, realizing one-way transmission, ensuring that the driving shaft can drive the lead screw to transmit power when the floating bed frame is pressed down, and no power is transmitted when it rises. A fixed piece is fixedly connected to the floating bed frame. The driving shaft penetrates the fixed piece, and a spring retaining piece is fixedly connected to the driving shaft. A second spring is arranged between the fixed piece and the spring retaining piece. The second spring is used to push the spring retaining piece, so that the first ratchet disc and the second ratchet disc remain tightly engaged, ensuring reliable transmission. Furthermore, a fixed piece is fixedly connected to the floating bed frame. The driving shaft penetrates the fixed piece, and a spring retaining piece is fixedly connected to the driving shaft. A second spring is arranged between the fixed piece and the spring retaining piece. The elastic force of the second spring keeps the first ratchet disc on the driving shaft engaged with the second ratchet disc on the driving lead screw, ensuring that the driving shaft can drive the driving lead screw to rotate through the one-way transmission of the ratchet discs when the driving shaft rotates, realizing power transmission. Furthermore, a force adjustment wheel is fixedly connected to the driving lead screw. A fixed nut is fixedly connected to the floating bed frame. The fixed nut is threadedly connected with a friction adjustment screw. The force adjustment wheel cooperates with the friction adjustment screw to control the rotational resistance of the driving lead screw by adjusting the friction between the two, thereby adjusting the traction force. Furthermore, one end of the friction force adjusting screw is rotatably connected to a friction disk, and the friction disk contacts with the force adjusting wheel. The friction force is adjusted by changing the pressure between the two. A speed reducer is also fixedly connected to the floating bed frame. The other end of the friction force adjusting screw is fixedly connected to the output end of the speed reducer, and the input end of the speed reducer is fixedly connected to a force adjusting rod. The speed reducer is used to reduce the speed and increase the torque of the rotation of the force adjusting rod, making the adjustment more labor-saving and precise. The force adjusting rod is rotatably connected to the floating bed frame through a bearing block. One end of the force adjusting rod is fixedly connected to a force adjusting handwheel. The force adjusting handwheel facilitates the user to manually adjust the position of the friction force adjusting screw, thereby changing the friction force between the friction disk and the force adjusting wheel, and realizing the adjustment of the traction force. This structure avoids the danger caused by excessive traction force from the source, and is more reliable and safe than the overload protection of the pressure sensor used in traditional traction beds. Furthermore, two groups of linear guide rails are fixedly connected to the floating bed frame. The two groups of linear guide rails are parallel to each other, and two linear sliders are slidably connected to each linear guide rail. The cooperation of the linear guide rails and the linear sliders provides guidance and support for the sliding of the sliding plate, ensuring smooth sliding. The linear sliders are fixedly connected to a sliding plate, and the sliding plate is fixedly connected to a sliding bed frame. The sliding plate slides on the linear guide rails through the linear sliders, driving the sliding bed frame to move, thereby realizing the adjustment of the distance between the hip placement pad and the leg placement pad and the torso placement pad, and realizing the traction and stretching of the spine.

[0006] Compared with the prior art, the beneficial effects of the present invention include: An intelligent traction bed with automatic traction force adjustment proposed by the present invention adopts a combination of a mechanical structure and friction force adjustment. By rotating the force adjusting handwheel, after being decelerated and torque-increased by the speed reducer, the friction force adjusting screw is driven to rotate, and then the pressure between the friction disk and the force adjusting wheel is changed, realizing the precise adjustment of the friction force magnitude. When it is necessary to increase the traction force, the friction force between the two is reduced, so that the floating bed frame can be pressed down more smoothly; when it is necessary to reduce the traction force, the friction force between the two is increased, restricting the pressing speed and amplitude of the floating bed frame. This adjustment method does not rely on electronic components and does not have problems such as sensor failures, with higher reliability. At the same time, medical staff can intuitively and precisely adjust the traction force according to the patient's physical condition and treatment needs, and grasp the treatment process in real time. Compared with the electronic protection mechanism of traditional traction beds, it provides a more reliable and safer treatment guarantee for patients. Description of the Drawings

[0007] The disclosure of the present invention will be described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the protection scope of the present invention. In the drawings, the same reference numerals are used to refer to the same components. Among them: Figure 1Schematically shows the external structure diagram of an intelligent traction bed with automatically adjustable traction force proposed according to an embodiment of the present invention; Figure 2 Schematically shows the split structure diagram of the fixed bed frame and the floating bed frame of an intelligent traction bed with automatically adjustable traction force proposed according to an embodiment of the present invention; Figure 3 Schematically shows the first spring structure diagram of an intelligent traction bed with automatically adjustable traction force proposed according to an embodiment of the present invention; Figure 4 Schematically shows the structure diagram of the floating bed frame of an intelligent traction bed with automatically adjustable traction force proposed according to an embodiment of the present invention; Figure 5 Schematically shows the structure diagram of the linear guide rail of an intelligent traction bed with automatically adjustable traction force proposed according to an embodiment of the present invention; Figure 6 Schematically shows the structure diagram of the force adjustment wheel and the friction disc of an intelligent traction bed with automatically adjustable traction force proposed according to an embodiment of the present invention; Figure 7 Schematically shows the structure diagram of the drive shaft of an intelligent traction bed with automatically adjustable traction force proposed according to an embodiment of the present invention.

[0008] Reference numerals in the figure: 1, traction bed base; 2, adjustment rotating shaft; 3, fixed bed frame; 4, electric telescopic rod; 5, side soft pad; 6, armpit fixing rod; 7, floating bed frame; 8, first spring; 9, lifting sleeve; 10, lifting tube; 11, torso placement pad; 12, linear guide rail; 13, linear slider; 14, sliding plate; 15, sliding bed frame; 16, buttocks placement pad; 17, leg placement pad; 18, foot fixing rod; 19, drive lead screw; 20, lead screw nut; 21, first bevel gear; 22, position adjustment shaft; 23, second bevel gear; 24, position adjustment handwheel; 25, drive shaft; 26, drive gear; 27, drive rack; 28, first ratchet disc; 29, second ratchet disc; 30, one-way ratchet; 31, fixing piece; 32, spring retaining piece; 33, second spring; 34, force adjustment wheel; 35, fixing nut; 36, friction force adjustment screw; 37, friction disc; 38, reducer; 39, force adjustment rod; 40, force adjustment handwheel. Detailed implementation manners

[0009] It is easy to understand that according to the technical solution of the present invention, without changing the essence of the present invention, those of ordinary skill in the art can propose various interchangeable structural forms and implementation manners. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as all of the present invention or as a limitation or restriction on the technical solution of the present invention.

[0010] Combined with the embodiments of the present invention Figures 1-7 Shown. An intelligent traction bed with automatic traction force adjustment includes a traction bed base 1. The traction bed base 1 is the basic support component of the entire traction bed, providing a stable installation foundation for other components and ensuring the stability of the traction bed during use. A regulating rotating shaft 2 is provided on the traction bed base 1. The regulating rotating shaft 2 is used to connect the traction bed base 1 and the fixed bed frame 3, enabling the fixed bed frame 3 to rotate around it, thereby realizing the adjustment of the angle of the fixed bed frame 3. The traction bed base 1 is rotationally connected to the fixed bed frame 3 through the regulating rotating shaft 2. The fixed bed frame 3 is one of the main load-bearing structures of the traction bed, used for installing and fixing other related components, and at the same time providing a basic platform for the patient to place the torso. The bottom of the fixed bed frame 3 is rotationally connected to an electric telescopic rod 4. The two ends of the electric telescopic rod 4 are respectively rotationally connected to the fixed bed frame 3 and the traction bed base 1. Through the telescopic movement of the electric telescopic rod 4, it can drive the fixed bed frame 3 to rotate around the regulating rotating shaft 2, thereby precisely adjusting the angle of the fixed bed frame 3 to meet the treatment needs of different patients. A set of side soft pads 5 are fixedly connected to both sides of the fixed bed frame 3. The side soft pads 5 are made of soft materials, which can provide comfortable support and protection for the patient, reducing the discomfort caused by the patient's contact with hard components during the treatment process. An armpit fixing rod 6 is rotationally connected to the side soft pad 5. The armpit fixing rod 6 is used to fix the armpit part of the patient. During traction, by clamping the armpit fixing rod 6 under the patient's armpits, the torso of the patient can be stabilized, ensuring the traction effect and at the same time preventing the patient's body from sliding during traction. A floating bed frame 7 is elastically connected to the fixed bed frame 3 through a first spring 8. The first spring 8 has an elastic buffering effect, enabling the floating bed frame 7 to be elastically connected to the fixed bed frame 3. When the patient lies on the floating bed frame 7, the first spring 8 can produce corresponding elastic deformation according to the patient's weight and movements, providing comfortable support. Four lifting sleeves 9 are fixedly connected to the fixed bed frame 3 by bolts, and four lifting tubes 10 are fixedly connected to the bottom of the floating bed frame 7 by bolts. The lifting sleeves 9 and the lifting tubes 10 cooperate with each other to form a guiding structure, which plays a guiding and limiting role in the lifting movement of the floating bed frame 7, ensuring that the floating bed frame 7 remains stable during the lifting process and does not tilt or shift. The lifting tube 10 is inserted into the lifting sleeve 9, and the first spring 8 is arranged between the lifting sleeve 9 and the lifting tube 10. A torso placement pad 11 is fixedly connected to the fixed bed frame 3. The torso placement pad 11 is made of a soft and comfortable material, providing a placement position for the patient's torso and enabling the patient to maintain a comfortable posture during treatment. Two sets of linear guide rails 12 are fixedly connected to the floating bed frame 7. The two sets of linear guide rails 12 are parallel to each other. The linear guide rail 12 is a high-precision linear motion guiding component, used to provide precise guidance for the sliding of the sliding plate 14, ensuring that the sliding plate 14 can slide smoothly along a straight line. And two linear sliders 13 are slidably connected to each linear guide rail 12. The linear slider 13 cooperates with the linear guide rail 12 to enable the sliding plate 14 to freely slide on the linear guide rail 12, reducing the frictional resistance during the sliding process and improving the smoothness of the sliding. The linear slider 13 is fixedly connected to a sliding plate 14. The sliding plate 14 is used to connect the linear slider 13 and the sliding bed frame 15, transmitting the sliding motion of the linear slider 13 to the sliding bed frame 15, thereby driving the sliding bed frame 15 to move on the floating bed frame 7. The sliding plate 14 is fixedly connected to a sliding bed frame 15. The sliding bed frame 15 is a structure that bears components such as the hip placement pad 16 and the leg placement pad 17. By sliding on the floating bed frame 7, the adjustment of the hip and leg positions is realized to adapt to the body sizes and traction requirements of different patients. The sliding bed frame 15 is fixedly connected to a hip placement pad 16. The hip placement pad 16 provides a placement position for the patient's hips and is made of a comfortable material to reduce the pressure and discomfort on the patient's hips during treatment. One end of the sliding bed frame 15 is rotatably connected to a leg placement pad 17. The leg placement pad 17 is used to place the patient's legs, and its rotatable connection method can adapt to different postures of the patient's legs, improving the comfort of the patient. A foot fixing rod 18 is fixedly connected to one side of the leg placement pad 17. The foot fixing rod 18 is used to fix the patient's feet. Clamping the patient's feet between the foot fixing rod 18 and the leg placement pad 17 can stabilize the patient's lower limbs, ensuring that the lower limbs do not slide during traction, thereby guaranteeing the traction effect. A drive lead screw 19 is rotatably connected to the floating bed frame 7 through a bearing block. The drive lead screw 19 is a transmission component that converts rotational motion into linear motion. Through cooperation with the lead screw nut 20, it can convert the rotational motion of the drive lead screw 19 into the linear motion of the sliding bed frame 15, thereby realizing the position adjustment of the hip placement pad 16 and the leg placement pad 17. A lead screw nut 20 is fixedly connected to the bottom of the sliding plate 14. The lead screw nut 20 is in threaded transmission connection with the drive lead screw 19. When the drive lead screw 19 rotates, the lead screw nut 20 will move along the axis direction of the drive lead screw 19, thereby driving the sliding plate 14 and the sliding bed frame 15 to move together. The drive lead screw 19 penetrates through the lead screw nut 20, and the drive lead screw 19 is in threaded transmission connection with the lead screw nut 20. A first bevel gear 21 is fixedly connected to the drive lead screw 19. The first bevel gear 21 is used to mesh with the second bevel gear 23 to achieve power transmission and direction change, and transmit the rotational motion of the position adjustment shaft 22 to the drive lead screw 19, thereby driving the drive lead screw 19 to rotate. A position adjustment shaft 22 is rotatably connected to the floating bed frame 7 through a bearing block. The position adjustment shaft 22 is perpendicular to the drive lead screw 19 and is used to install the second bevel gear 23 and the position adjustment handwheel 24, and transmit the power of the user rotating the position adjustment handwheel 24 to the second bevel gear 23, and then transmit it to the first bevel gear 21 and the drive lead screw 19 through gear meshing. One end of the position adjustment shaft 22 is fixedly connected to the second bevel gear 23. The second bevel gear 23 meshes with the first bevel gear 21 to achieve power transmission and direction conversion, and transmit the rotational motion of the position adjustment shaft 22 to the drive lead screw 19, so that the drive lead screw 19 can rotate. The other end of the position adjustment shaft 22 is fixedly connected to the position adjustment handwheel 24. The position adjustment handwheel 24 is convenient for the user to operate manually. By rotating the position adjustment handwheel 24, the rotation of the drive lead screw 19 can be easily adjusted, thereby realizing the manual adjustment of the position of the sliding bed frame 15. The floating bed frame 7 is also slidably connected with a driving shaft 25 through a sliding bearing seat. The driving shaft 25 is coaxial with the driving lead screw 19 and is used for installing components such as a driving gear 26 and a first ratchet disc 28. When the floating bed frame 7 moves up and down, the driving shaft 25 can slide together with the floating bed frame 7 and rotate under the meshing action of the driving gear 26 and the driving rack 27. A driving gear 26 is fixedly connected to the driving shaft 25. The driving gear 26 meshes with the driving rack 27. When the floating bed frame 7 descends, the driving gear 26 descends with the driving shaft 25 and meshes with the driving rack 27. Under the action of the driving rack 27, the driving gear 26 rotates, thereby driving the driving shaft 25 to rotate. A driving rack 27 is fixedly connected to the fixed bed frame 3. The driving rack 27 meshes with the driving gear 26 to provide the driving force for the rotation of the driving gear 26. When the floating bed frame 7 descends, the driving gear 26 rolls on the driving rack 27, thereby realizing the rotation of the driving shaft 25. One end of the driving shaft 25 is fixedly connected with a first ratchet disc 28, and one end of the driving lead screw 19 is fixedly connected with a second ratchet disc 29. One-way ratchets 30 are machined on both the first ratchet disc 28 and the second ratchet disc 29. The one-way ratchets 30 of the first ratchet disc 28 and the second ratchet disc 29 are mutually engaged and the tooth tips face in opposite directions. The first ratchet disc 28 and the second ratchet disc 29 form a one-way transmission mechanism. When the driving shaft 25 rotates, under the action of the one-way ratchet 30, it can drive the driving lead screw 19 to rotate. When the driving lead screw 19 rotates actively, due to the characteristics of the one-way ratchet 30, it will not drive the driving shaft 25 to rotate, thereby realizing the one-way transmission of power, ensuring that during the traction process, the driving lead screw 19 can rotate according to the descending movement of the floating bed frame 7, and further realizing the movement of the sliding bed frame 15, and there will be no reverse transmission in other cases. A fixing piece 31 is fixedly connected to the floating bed frame 7. The driving shaft 25 penetrates through the fixing piece 31, and a spring retaining piece 32 is fixedly connected to the driving shaft 25. A second spring 33 is arranged between the fixing piece 31 and the spring retaining piece 32. The second spring 33 is used to provide a restoring force for the driving shaft 25. When the floating bed frame 7 rises, the second spring 33 pushes the driving shaft 25 to move upward, so that the first ratchet disc 28 and the second ratchet disc 29 maintain a good meshing state, ensuring the normal operation of the one-way transmission mechanism. A force adjustment wheel 34 is fixedly connected to the driving lead screw 19. The force adjustment wheel 34 is used to cooperate with the friction disc 37 to adjust the traction force by changing the frictional force between the two. A fixed nut 35 is fixedly connected to the floating bed frame 7. The fixed nut 35 is fixedly connected with a frictional force adjustment screw 36 through a thread. The frictional force adjustment screw 36 can rotate and move axially within the fixed nut 35. By rotating the frictional force adjustment screw 36, the pressure between the friction disc 37 and the force adjustment wheel 34 can be adjusted, thereby changing the frictional force between the two. One end of the frictional force adjustment screw 36 is rotatably connected to a friction disc 37. The friction disc 37 contacts the force adjustment wheel 34. When the frictional force adjustment screw 36 moves axially, it will drive the friction disc 37 to approach or move away from the force adjustment wheel 34, thereby increasing or decreasing the pressure between the two, and further adjusting the magnitude of the frictional force to achieve the control of the traction force. A speed reducer 38 is also fixedly connected to the floating bed frame 7. The input end of the speed reducer 38 is connected to the force adjustment rod 39, and the output end is connected to the frictional force adjustment screw 36, playing a role of reducing speed and increasing torque, making it more labor-saving for the user to rotate the force adjustment handwheel 40, and at the same time enabling more precise force adjustment. The other end of the frictional force adjustment screw 36 is fixedly connected to the output end of the speed reducer 38. The input end of the speed reducer 38 is fixedly connected to a force adjustment rod 39. The force adjustment rod 39 is rotatably connected to the floating bed frame 7 through a bearing seat. One end of the force adjustment rod 39 is fixedly connected to a force adjustment handwheel 40. The force adjustment handwheel 40 is an operating component for the user to adjust the traction force. By rotating the force adjustment handwheel 40, after the speed reducer 38 reduces speed and increases torque, it drives the frictional force adjustment screw 36 to rotate, thereby realizing the adjustment of the frictional force between the friction disc 37 and the force adjustment wheel 34, and further controlling the traction force. Working principle: When using an intelligent traction bed with automatic traction force adjustment, first rotate the force adjustment handwheel 40. The force adjustment handwheel 40 drives the input end of the speed reducer 38 to rotate through the force adjustment rod 39. The speed reducer 38 plays a role of reducing speed and increasing torque, so that the output end drives the frictional force adjustment screw 36 to rotate at a slower speed and with a greater torque. The frictional force adjustment screw 36 and the fixed nut 35 are in threaded cooperation and move axially inward while rotating, thereby pushing the friction disc 37 closer to the force adjustment wheel 34, increasing the pressure between the friction disc 37 and the force adjustment wheel 34, making the frictional force between the two increase. When the frictional force is large enough, the friction disc 37 clamps the force adjustment wheel 34, and at this time, the driving lead screw 19 is locked and cannot rotate. Subsequently, let the patient lie on the traction bed, place the torso on the torso placement pad 11, and the torso placement pad 11 provides comfortable support for the patient's torso. Clamp the two axillary fixing rods 6 under the armpits respectively. The axillary fixing rods 6 can adapt to the axillary positions of different patients through rotational connection on the side soft pads 5, stabilizing the patient's torso and preventing the torso from sliding during traction. Place the buttocks on the buttock placement pad 16, and the buttock placement pad 16 provides comfortable support for the buttocks; place the legs on the leg placement pad 17, and the leg placement pad 17 can adapt to different leg postures through rotational connection with the sliding bed frame 15; and clamp the feet between the foot fixing rod 18 and the leg placement pad 17, and the foot fixing rod 18 ensures the stability of the patient's feet and prevents the lower limbs from sliding. Then, adjust the angle of the fixed bed frame 3 through the electric telescopic rod 4. The telescopic movement of the electric telescopic rod 4 drives the fixed bed frame 3 to rotate around the adjustment rotation shaft 2, keeping the fixed bed frame 3 in a horizontal state to adapt to the patient's lying posture. Meanwhile, rotate the force adjustment handwheel 40 to gradually reduce the friction between the friction disc 37 and the force adjustment wheel 34. At this time, the patient's weight acts on the floating bed frame 7, and the floating bed frame 7 floats downward on the fixed bed frame 3 through the first spring 8. The lifting tube 10 slides downward in the lifting sleeve 9, and the first spring 8 is compressed to play a buffering role. As the floating bed frame 7 is pressed down as a whole, the driving gear 26 on the driving shaft 25 descends. When the driving gear 26 meshes with the driving rack 27, under the action of the driving rack 27, the driving gear 26 rotates, thereby driving the driving shaft 25 to rotate. At this time, under the push of the second spring 33, the driving shaft 25 makes the first ratchet disc 28 and the second ratchet disc 29 engage with each other. Since the tips of the one-way ratchets 30 of the two face in opposite directions, when the driving shaft 25 rotates, it will drive the driving lead screw 19 to rotate through the one-way engagement of the first ratchet disc 28 and the second ratchet disc 29. When the driving lead screw 19 rotates, through the thread fit with the lead screw nut 20, it drives the sliding plate 14 and the sliding bed frame 15 to slide along the linear guide rail 12, and the linear guide rail 12 and the linear slider 13 ensure the smoothness and accuracy of the sliding. As a result, the distance between the buttock placement pad 16 and the leg placement pad 17 and the torso placement pad 11 increases, realizing the traction and stretching of the spine. In this solution, the force for lumbar traction comes from the patient's own weight. After transmission loss through gears and lead screws, the maximum traction force is approximately 70% of the body weight, and the traction force can be adjusted and reduced by adjusting the friction between the friction disc 37 and the force adjustment wheel 34. When it is necessary to increase the traction force, reduce the friction between the two, so that the floating bed frame 7 can press down more smoothly; when it is necessary to reduce the traction force, increase the friction between the two, restricting the pressing speed and amplitude of the floating bed frame 7, thus avoiding the danger caused by excessive traction force from the source, which is more reliable and safe than the overload protection of the pressure sensor used in traditional traction beds.

[0011] The technical scope of the present invention is not limited to the content described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. An intelligent traction bed with automatically adjustable traction force, characterized in that, Including: A traction bed base, on which a fixed bed frame is rotatably connected, and a floating bed frame is elastically connected to the fixed bed frame; A torso placement pad is fixedly connected to the fixed bed frame, a sliding bed frame is slidably connected to the floating bed frame, a hip placement pad is fixedly connected to the sliding bed frame, a leg placement pad is rotatably connected to one end of the sliding bed frame, and a foot fixing rod is fixedly connected to one side of the leg placement pad; A driving lead screw is rotatably connected to the floating bed frame through a bearing seat, a lead screw nut is fixedly connected to the bottom of the sliding bed frame, the driving lead screw penetrates through the lead screw nut, and the driving lead screw is in transmission connection with the driving lead screw through a thread; The floating bed frame is also slidably connected with a driving shaft through a sliding bearing seat, the driving shaft is coaxial with the driving lead screw, a driving gear is fixedly connected to the driving shaft, a driving rack is fixedly connected to the fixed bed frame, the driving rack and the driving rack are meshed with each other, a first ratchet disc is fixedly connected to one end of the driving shaft, and a second ratchet disc is fixedly connected to one end of the driving lead screw.

2. The intelligent traction bed with automatically adjustable traction force according to claim 1, characterized in that, An adjusting rotating shaft is arranged on the traction bed base, the traction bed base is rotatably connected with a fixed bed frame through the adjusting rotating shaft, a group of side soft pads are fixedly connected to both sides of the fixed bed frame, and an armpit fixing rod is rotatably connected to the side soft pads.

3. The intelligent traction bed with automatically adjustable traction force according to claim 1, characterized in that, The traction bed base is rotatably connected with a fixed bed frame through the adjusting rotating shaft, an electric telescopic rod is rotatably connected to the bottom of the fixed bed frame, and the other end of the electric telescopic rod is rotatably connected to the traction bed base.

4. The intelligent traction bed with automatically adjustable traction force according to claim 1, characterized in that, The floating bed frame is elastically connected to the fixed bed frame through a first spring, four lifting sleeves are fixedly connected to the fixed bed frame through bolts, four lifting tubes are fixedly connected to the bottom of the floating bed frame through bolts, the lifting tubes are inserted into the lifting sleeves, and the first spring is arranged between the lifting sleeve and the lifting tube.

5. The intelligent traction bed with automatically adjustable traction force according to claim 1, characterized in that, A first bevel gear is fixedly connected to the driving lead screw, a position adjusting shaft is rotatably connected to the floating bed frame through a bearing seat, the position adjusting shaft is perpendicular to the driving lead screw, a second bevel gear is fixedly connected to one end of the position adjusting shaft, the second bevel gear is meshed with the first bevel gear, and a position adjusting hand wheel is fixedly connected to the other end of the position adjusting shaft.

6. The intelligent traction bed with automatically adjustable traction force according to claim 1, characterized in that, One-way ratchets are machined on both the first ratchet disc and the second ratchet disc, the one-way ratchets of the first ratchet disc and the second ratchet disc are mutually engaged and the tooth tips face in opposite directions, a fixed piece is fixedly connected to the floating bed frame, the driving shaft penetrates through the fixed piece, and a spring retaining piece is fixedly connected to the driving shaft, and a second spring is arranged between the fixed piece and the spring retaining piece.

7. The intelligent traction bed with automatically adjustable traction force according to claim 5, characterized in that, A fixed piece is fixedly connected to the floating bed frame, the driving shaft penetrates through the fixed piece, and a spring retaining piece is fixedly connected to the driving shaft, and a second spring is arranged between the fixed piece and the spring retaining piece.

8. The intelligent traction bed with automatically adjustable traction force according to claim 1, characterized in that, A force adjusting wheel is fixedly connected to the driving lead screw, a fixed nut is fixedly connected to the floating bed frame, and a friction adjusting screw is fixedly connected to the fixed nut through a thread.

9. The intelligent traction bed with automatically adjustable traction force according to claim 8, characterized in that, One end of the friction force adjusting screw is rotatably connected with a friction disc, and a speed reducer is also fixedly connected to the floating bed frame. The other end of the friction force adjusting screw is fixedly connected to the output end of the speed reducer. The input end of the speed reducer is fixedly connected with a force adjusting rod, and the force adjusting rod is rotatably connected to the floating bed frame through a bearing seat. One end of the force adjusting rod is fixedly connected with a force adjusting handwheel.

10. The intelligent traction bed with automatically adjustable traction force according to claim 1, characterized in that, Two sets of linear guide rails are fixedly connected to the floating bed frame. The two sets of linear guide rails are parallel to each other, and two linear sliders are slidably connected to each linear guide rail. A sliding plate is fixedly connected to the linear slider, and a sliding bed frame is fixedly connected to the sliding plate.

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