Leg traction frame used on bed

Abstract

The invention provides a leg traction frame used on a bed, and belongs to the technical field of leg traction frames. Comprising two sets of movable binding devices and a bed body, the two sets of movable binding devices are distributed on the two sides of the bed body, the two sets of movable binding devices are arranged in a suspended mode and bound with the legs of a patient, and each movable binding device is composed of a regulation and control assembly, a shank clamping assembly and a thigh clamping assembly; and the shank clamping assembly and the thigh clamping assembly are connected through the regulation and control assembly. By arranging the movable binding device and the traction rope, the traction frame and the bed body are separately arranged, so that the traction frame is convenient to maintain and carry, meanwhile, when the device is used for traction activities, the movable binding device can ensure that the waist and the buttocks of a patient cannot be suspended while the legs of the patient move freely, and the traction activity is improved. The problems that an existing leg traction frame used on a bed is not convenient for rehabilitation training of a patient, and the traction frame is not convenient to maintain and carry are solved.

Description

Technical Field

[0001] The invention relates to the technical field of leg traction frames, in particular to a leg traction frame used on a bed. Background Art

[0002] Leg traction frame is a medical device mainly used for traction, fixation and support of the lower limbs. It usually consists of two brackets and a traction device. The brackets can be fixed on the bed or wall, and the traction device can be used to traction the lower limbs.

[0003] At present, the leg traction frame used on the bed is usually fixed to the bed body, which makes it inconvenient to carry and maintain the traction frame. At the same time, when this type of traction device performs traction exercises on the patient's legs, the movement angle between the front moving frame structure and the end supporting frame structure is fixed and there is a synchronous movement state, that is, when the patient's calf moves, the thigh will also move with it, and the movement angle between the thigh and the calf is limited, and free movement cannot be achieved, so that patients with leg discomfort cannot perform effective recovery exercises. At the same time, because the traction frame is fixed to the bed body, when the traction frame moves, the connection between the patient's waist and thigh will be in a suspended state when the patient lies down to use it, which further causes discomfort to patients with leg discomfort when performing traction exercises.

[0004] Therefore, the present application provides a leg traction frame for a bed to meet the demand. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a leg traction frame for a bed. By arranging a movable binding device and a traction rope, the traction frame is separated from the bed body, thereby facilitating the maintenance and transportation of the traction frame. At the same time, when the device is used for traction activities, the movable binding device can ensure that the patient's legs can move freely while the patient's waist and buttocks will not be suspended in the air, so as to solve the problem that the existing leg traction frame for a bed is not convenient for patients to perform rehabilitation training, and the traction frame is not convenient for maintenance and transportation.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A leg traction frame for a bed, comprising a movable binding device and a bed body, wherein the movable binding device is provided with two groups and is distributed on both sides of the bed body, the two groups of movable binding devices are both suspended and bound to the patient's legs, the movable binding device is composed of a regulating component, a calf clamping component and a thigh clamping component, and the calf clamping component and the thigh clamping component are connected through the regulating component;

[0008] The regulating component includes a calf mounting plate, a positioning column is fixedly installed on the side wall of the calf mounting plate, a swivel is rotatably connected to the outer wall of the positioning column, a thigh mounting plate is fixedly installed on the outer wall of the bottom of the swivel, the calf mounting plate is connected to the calf clamping component, and the thigh mounting plate is connected to the thigh clamping component.

[0009] Optionally, the outer wall of the positioning column is evenly provided with three groups of receiving grooves, the side walls of the receiving grooves are rotatably connected with a rotating plate with a column, the side walls of the rotating plate with a column are fixedly installed with a clamping column, the end wall of the rotating plate with a column is fixedly installed with a gear one, and the gear one is located outside the positioning column, the top inner wall of the rotating ring is provided with a wave groove, the inner wall of the wave groove is evenly provided with multiple groups of clamping holes, the clamping holes are clamped with the clamping column, the top outer wall of the rotating ring is rotatably connected with a rotating cover, and the rotating cover is rotatably connected to the inner wall of the positioning column, the top inner wall of the rotating cover is fixedly installed with an arc-shaped inner rack, the arc-shaped inner rack is provided with three groups, and they are respectively meshed with three groups of gear one.

[0010] Optionally, the calf clamping assembly includes a square sliding shell, which is provided with two groups and is respectively fixedly connected to the outer walls of the two groups of calf assembly plates; the inner wall at the bottom of the square sliding shell is rotatably connected to gear 2; a motor is fixedly installed on the outer wall of the square sliding shell, and the motor output shaft is fixedly connected to the two end walls of the gear; a sliding bar is slidably connected to the inner wall of the square sliding shell, a base rack is fixedly installed on the bottom of the sliding bar, and the base rack is meshed with gear 2.

[0011] Optionally, an internal threaded sleeve is fixedly installed on the outer side wall of the slide bar, and the internal threaded sleeve passes through the side wall of the slide bar, a door-type socket is slidably penetrated through the outer side wall of the slide bar, a screw is rotatably penetrated through the middle inner wall of the door-type socket, and the screw is meshed with the internal threaded sleeve, and a plastic double buckle is fixedly installed on the outer end walls on both sides of the door-type socket, and the two groups of plastic double buckles are fixedly installed on the outer walls of the same clamping strip, the square sliding shell and the bottom of the slide bar on one side are fixedly installed with L-shaped columns, and the square sliding shell and the bottom of the slide bar on the other side are fixedly installed with L-shaped plugs, and the L-shaped columns are plugged into the corresponding L-shaped plugs.

[0012] Optionally, the thigh clamping assembly includes a bottom sliding track, the front end and both sides of the middle of the bottom sliding bar are rotatably connected with a connecting rod 1, and side clamps are provided on both sides of the bottom sliding track. The other ends of the two groups of connecting rods 1 located on the same side are respectively rotatably connected to the two ends of the side clamps on that side, and the two ends of the top of the side clamps are fixedly installed with a plastic double buckle 2, and the inner walls of the two groups of the plastic double buckles 2 are fixedly installed with the same clamping strip 2, the ends of the clamping strip 2 are fixedly connected to the corresponding end walls of the thigh assembly plate, and a sliding seat is slidably connected to the end of the bottom sliding bar, and the sliding seat is rotatably connected with connecting rods 2 on both sides, and the other end of the connecting rod 2 is rotatably connected to the side wall of the side clamp on that side.

[0013] Optionally, both sides of the bottom end of the bed body are rotatably connected to cross beam arms, the other end of the cross beam arm is rotatably connected to a support arm, the top inner wall of the support arm is slidably connected to a cylinder, a support roller is fixedly installed on the output end of the cylinder, and the support roller can support the knee joint, a pneumatic support foot is fixedly installed on the bottom of the end of the support arm, a rope winding roller is inserted on the top of the end of the support arm, a traction rope is wound on the rope winding roller, and the traction rope is fixedly connected to the top of the two groups of L-shaped tubes.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] In the above scheme, by setting up a movable binding device, according to the patient's height and leg ratio, the crossbeam arm and the support arm are rotated to adapt to the patient's hip and leg ratio, and the cylinder is slid and driven to make the top support roller support the patient's knee joint. Thereafter, the medical staff reverses the rotating cover to make the arc-shaped inner rack engage with the corresponding gear, thereby driving the column-belt rotating plate to rotate inward, so that the clamping column and the clamping hole are separated. At this time, the angle between the thigh mounting plate and the calf mounting plate can be freely adjusted, and the patient's thigh is placed between the two sets of side splints, and the patient's thigh is fixed by the thigh clamping assembly. At the same time, the patient's calf is placed between the two sets of square sliding shells, and the patient's calf is fixed by the calf clamping assembly, thereby completing the fixation of the patient's leg. Since the movable binding device is separated from the bed body, and the binding structure is used to fix and pull the legs, it can be convenient for maintenance and transportation.

[0016] By setting the rope winding roller and the traction rope, when it is necessary to perform recovery training for the physiological curvature of the patient's lower limbs or postoperative rehabilitation training, the rope winding roller can be rotated after the rotating cover is reversed, so that the traction rope can drive the calf clamping assembly to swing, thereby pulling the patient's leg. When surgery is required on the patient's leg, the angle between the calf clamping assembly and the thigh clamping assembly is adjusted to adapt to the surgical angle. Thereafter, the rotating cover is rotated forward to rotate the column rotating plate outward so that the clamping column and the clamping hole are engaged, thereby fixing the angle between the calf clamping assembly and the thigh clamping assembly, thereby fixing the patient's thigh and calf position. Thereafter, the straps on the shaping double buckle one and the shaping double buckle two are untied to facilitate medical staff to perform surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of a leg traction frame used on a bed;

[0019] Figure 2 It is a structural schematic diagram of the movable binding device;

[0020] Figure 3 This is a disassembled diagram of the active binding device;

[0021] Figure 4 It is a schematic diagram of the structure of the regulatory component;

[0022] Figure 5 This is a split diagram of the control components;

[0023] Figure 6 This is a schematic diagram of the installation of the rotating cover in the control component;

[0024] Figure 7 It is an assembly diagram of the clamping column and the clamping hole in the regulating component;

[0025] Figure 8 The meshing diagram of gear 1 and arc-shaped internal rack in the control assembly;

[0026] Fig. 9 It is a structural schematic diagram of the calf clamping assembly;

[0027] Fig.10 It is an assembly drawing of the door-type socket and the clamping strip 1 in the calf clamping assembly;

[0028] Fig.11 It is an assembly diagram of the slide bar and the square slide shell in the calf clamping assembly;

[0029] Fig.12 is a schematic diagram of the structure of the thigh clamping assembly;

[0030] Fig.13 is a plane operation diagram of the traction frame;

[0031] Fig.14 This is a schematic diagram of the installation of various components on the bed.

[0032] Reference numerals:

[0033] Active binding device 100, regulating component 110, calf assembly plate 111, positioning column 112, receiving groove 113, belt column rotating plate 114, clamping column 115, gear 1 116, thigh assembly plate 120, swivel 121, wave groove 122, clamping hole 123, rotating cover 130, arc-shaped inner rack 131, calf clamping component 140, square sliding shell 141, gear 2 142, motor 143, sliding bar 144, base rack 145, internal thread sleeve 146, door-type plug Seat 147, screw 148, clamping bar 150, shaped double buckle 151, L-shaped plug column 152, L-shaped insert 153, thigh clamping assembly 160, bottom slide track 161, connecting rod 162, side splint 163, shaped double buckle 2 164, clamping bar 2 165, slide seat 166, connecting rod 2 167, bed body 200, crossbeam arm 210, support arm 220, cylinder 221, support roller 222, pneumatic support foot 230, rope winding roller 240, traction rope 241.

[0034] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0035] The following is a detailed description of a leg traction frame for a bed provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0036] like Figures 1 to 14 As shown, an embodiment of the present invention provides a leg traction frame for a bed, comprising an active binding device 100 and a bed body 200, wherein the active binding device 100 is provided with two groups and is distributed on both sides of the bed body 200, and the two groups of active binding devices 100 are both suspended and bound to the patient's legs, and the active binding device 100 is composed of an adjusting component 110, a calf clamping component 140 and a thigh clamping component 160, and the calf clamping component 140 and the thigh clamping component 160 are connected through the adjusting component 110;

[0037] The regulating component 110 includes a calf assembly plate 111, a positioning column 112 is fixedly installed on the side wall of the calf assembly plate 111, a swivel 121 is rotatably connected to the outer wall of the positioning column 112, and a thigh assembly plate 120 is fixedly installed on the outer wall of the bottom of the swivel 121. The calf assembly plate 111 is connected to the calf clamping assembly 140, and the thigh assembly plate 120 is connected to the thigh clamping assembly 160. In the present invention, by setting a movable binding device 100 and a traction rope 241, the traction frame and the bed 200 are separated and set, so as to facilitate the maintenance and transportation of the traction frame. At the same time, when using the device for traction activities, the movable binding device 100 can ensure that the patient's legs can move freely while the patient's waist and buttocks will not be suspended in the air.

[0038] In this embodiment, if Figures 4 to 8 As shown, the outer wall of the positioning column 112 is evenly provided with three groups of receiving grooves 113, the side wall of the receiving groove 113 is rotatably connected with a belt column rotating plate 114, the side wall of the belt column rotating plate 114 is fixedly installed with a clamping column 115, the end wall of the belt column rotating plate 114 is fixedly installed with a gear 116, and the gear 116 is located outside the positioning column 112, the top inner wall of the rotating ring 121 is provided with a wave groove 122, the inner wall of the wave groove 122 is evenly provided with a plurality of groups of clamping holes 123, the clamping holes 123 are clamped with the clamping column 115, the top outer wall of the rotating ring 121 is rotatably connected with a rotating cover 130, and the rotating cover 130 is rotatably connected with the inner wall of the positioning column 112, the top inner wall of the rotating cover 130 is fixedly installed with an arc-shaped inner rack 131, and the arc-shaped inner rack 131 is provided with three groups, and is respectively meshed with the three groups of gears 116. In the present invention, when the device is needed to perform traction training on the patient's legs, By reversing the rotating cover 130, the arc-shaped inner rack 131 is meshed with the corresponding gear 116, thereby driving the belt column rotating plate 114 to rotate inward, so that the clamping column 115 is separated from the clamping hole 123. At this time, the angle between the thigh mounting plate 120 and the calf mounting plate 111 can be freely adjusted. Similarly, when surgery is required on the patient's leg, the angle between the calf clamping assembly 140 and the thigh clamping assembly 160 is adjusted to adapt to the surgical angle. Thereafter, the rotating cover 130 is rotated forward to rotate the belt column rotating plate 114 outward, so that the clamping column 115 is engaged with the clamping hole 123, thereby fixing the angle between the calf clamping assembly 140 and the thigh clamping assembly 160, thereby fixing the patient's thigh and calf position. Thereafter, the straps on the shaping double buckle 1 151 and the shaping double buckle 2 164 are untied to facilitate medical staff to perform surgery.

[0039] As an implementation method in this embodiment, Fig. 9 and Fig.11As shown, the calf clamping assembly 140 includes a square sliding shell 141, which is provided with two groups and is fixedly connected to the outer walls of the two groups of calf mounting plates 111 respectively. The inner wall at the bottom of the square sliding shell 141 is rotatably connected to a gear 2 142, a motor 143 is fixedly installed on the outer wall of the square sliding shell 141, and the output shaft of the motor 143 is fixedly connected to the end wall of the gear 2 142, a slide bar 144 is slidably connected to the inner wall of the square sliding shell 141, a base rack 145 is fixedly installed at the bottom of the slide bar 144, and the base rack 145 is meshed with the gear 2 142. In the present invention, the patient's calf is placed between the two groups of square sliding shells 141, and the motor 143 is driven according to the patient's calf length, so that the motor 143 drives the gear 2 142 to mesh with the base rack 145, so that the length of the slide bar 144 changes and adapts to the patient's calf length.

[0040] In this embodiment, if Fig. 9 and Fig.10 As shown, the outer side wall of the slide bar 144 is fixedly installed with an internal threaded sleeve 146, and the internal threaded sleeve 146 penetrates the side wall of the slide bar 144, and the outer side wall of the slide bar 144 slides and penetrates a door-shaped socket 147, and the middle inner wall of the door-shaped socket 147 rotates and penetrates a screw 148, and the screw 148 is engaged with the internal threaded sleeve 146, and the outer end walls on both sides of the door-shaped socket 147 are fixedly installed with a plastic double buckle 151, and the outer walls of the two sets of plastic double buckles 151 are fixedly installed with the same clamping strip 150, and the square sliding shell 141 on one side and the bottom of the slide bar 144 are fixedly installed with L-shaped plugs 152, the square sliding shell 141 and the bottom of the sliding bar 144 on the other side are fixedly installed with an L-shaped insert 153, and the L-shaped plug 152 is plugged into the corresponding L-shaped insert 153. In the present invention, the screw 148 is rotated according to the circumference of the patient's calf, so that the screw 148 is engaged with the internal threaded sleeve 146, thereby driving the door-type socket 147 to move, so that the two sets of clamping strips 150 can clamp the patient's calf, and at the same time, the L-shaped plug 152 slides in the corresponding L-shaped insert 153, and then the patient's calf is fixed with an elastic strap passing through the plastic double buckle 151.

[0041] As an implementation method in this embodiment, Fig.12As shown, the thigh clamping assembly 160 includes a bottom sliding track 161, and the front end and both sides of the middle of the bottom sliding strip 161 are rotatably connected with a connecting rod 162, and side splints 163 are provided on both sides of the bottom sliding track 161. The other ends of the two groups of connecting rods 162 on the same side are respectively rotatably connected to the two ends of the side splints 163 on the side, and the top two ends of the side splints 163 are fixedly installed with molded double buckles 164. The molded double buckles 151 and the molded double buckles 164 are both made of soft plastic and can fit the patient's legs. The inner walls of the two groups of molded double buckles 164 are fixedly installed with the same clamping strip 165, and the end of the clamping strip 165 is fixedly connected to the corresponding end wall of the thigh assembly plate 120. 50 and the clamping strip 165 are composed of thicker hard plastic and can clamp the patient's legs. A sliding seat 166 is slidably connected to the end of the bottom sliding strip 161, and connecting rods 167 are rotatably connected on both sides of the sliding seat 166. The other end of the connecting rod 167 is rotatably connected to the side wall of the side splint 163 on that side. In the present invention, the patient's thigh is placed between the two groups of side splints 163, and the sliding seat 166 is slid according to the patient's thigh circumference to change the angle of the connecting rod 167, thereby changing the spacing between the two groups of side splints 163 to adapt to the patient's thigh circumference. After clamping the patient's thigh, an elastic strap is used to pass through the molding double buckle 164 to fix the patient's thigh.

[0042] As an implementation method in this embodiment, Fig.14 As shown, both sides of the bottom end of the bed body 200 are rotatably connected with a cross beam arm 210, and the other end of the cross beam arm 210 is rotatably connected with a support arm 220. By adjusting the positions of the cross beam arm 210 and the support arm 220, it can adapt to different patients. The inner wall of the top of the support arm 220 is slidably connected with a cylinder 221, and a support roller 222 is fixedly installed at the output end of the cylinder 221, and the support roller 222 can support the knee joint. A pneumatic support foot 230 is fixedly installed at the bottom of the end of the support arm 220, and a rope roller 240 is inserted at the top of the end of the support arm 220. A traction rope 241 is wound around the rope roller 240, and the traction rope 241 is fixedly connected to the top of the two groups of L-shaped cannulas 153. In the present invention, according to the patient According to the proportion of the patient's height and legs, the crossbeam arm 210 and the support arm 220 are rotated to adapt to the proportion of the patient's hips and legs. Thereafter, the pneumatic support foot 230 is placed to fix the support arm 220, and the cylinder 221 is slid and driven to make the top support roller 222 support the patient's knee joint. In particular, after the patient's legs are fixed, the traction rope 241 on the rope roller 240 is connected to the top of the two groups of L-shaped cannulas 153. When it is necessary to perform recovery training for the physiological curvature of the patient's lower limbs or postoperative rehabilitation training, the rope roller 240 is rotated after the rotating cover 130 is reversed, so that the traction rope 241 can drive the calf clamping assembly 140 to swing, thereby pulling the patient's legs.

[0043] The working principle of the technical solution provided by the present invention is as follows: according to the patient's height and leg ratio, the cross beam arm 210 and the support arm 220 are rotated to adapt to the patient's hip and leg ratio, and then the pneumatic support foot 230 is placed to fix the support arm 220, and at the same time, the cylinder 221 is slid and driven to make the top support roller 222 support the patient's knee joint. After that, the medical staff reverses the rotating cover 130 to make the arc-shaped inner rack 131 engage with the corresponding gear 116, thereby driving the column rotating plate 114 to rotate inward, so that the clamping column 115 is separated from the clamping hole 123. At this time, the angle between the thigh mounting plate 120 and the calf mounting plate 111 can be freely adjusted. After that, the patient's thigh is placed between the two sets of side splints 163, and the slide seat 166 is slid according to the patient's thigh leg circumference to make the clamping of the connecting rod 2 167 The angle changes, thereby changing the spacing between the two sets of side splints 163 to adapt to the patient's thigh circumference. After clamping the patient's thigh, an elastic bandage is used to pass through the molded double buckle 164 to fix the patient's thigh. At the same time, the patient's calf is placed between the two sets of square sliding shells 141, and the motor 143 is driven according to the patient's calf length, so that the motor 143 drives the gear 142 to engage with the base rack 145, so that the length of the sliding bar 144 changes and adapts to the patient's calf length. At the same time, the screw rod 148 is rotated according to the patient's calf circumference, so that the screw rod 148 is engaged with the internal threaded sleeve 146, thereby driving the door-type socket 147 to move, so that the two sets of clamping strips 150 can clamp the patient's calf, and then the elastic bandage is used to pass through the molded double buckle 151 to fix the patient's calf;

[0044] After the patient's legs are fixed, the traction rope 241 on the rope roller 240 is connected to the top of the two groups of L-shaped cannulas 153. When it is necessary to perform recovery training on the physiological curvature of the patient's lower limbs or postoperative rehabilitation training, the rope roller 240 is rotated after the rotating cover 130 is reversed, so that the traction rope 241 can drive the calf clamping assembly 140 to swing, thereby pulling the patient's leg. When surgery is required on the patient's leg, the angle between the calf clamping assembly 140 and the thigh clamping assembly 160 is adjusted to adapt to the surgical angle. Thereafter, the rotating cover 130 is rotated forward to rotate the column rotating plate 114 outward so that the clamping column 115 is engaged with the clamping hole 123, thereby fixing the angle between the calf clamping assembly 140 and the thigh clamping assembly 160, thereby fixing the patient's thigh and calf position. Thereafter, the straps on the shaping double buckle 1 151 and the shaping double buckle 2 164 are untied to facilitate medical staff to perform surgery.

[0045] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A leg traction frame for a bed, comprising a movable binding device (100) and a bed body (200), wherein the movable binding device (100) is provided in two groups and is distributed on both sides of the bed body (200), and the two groups of the movable binding devices (100) are both suspended and bound to the patient's legs, characterized in that: The movable binding device (100) is composed of an adjusting component (110), a calf clamping component (140) and a thigh clamping component (160), and the calf clamping component (140) and the thigh clamping component (160) are connected via the adjusting component (110); The regulating component (110) includes a calf mounting plate (111), a positioning column (112) is fixedly installed on the side wall of the calf mounting plate (111), a swivel (121) is rotatably connected to the outer wall of the positioning column (112), a thigh mounting plate (120) is fixedly installed on the bottom outer wall of the swivel (121), the calf mounting plate (111) is connected to the calf clamping component (140), and the thigh mounting plate (120) is connected to the thigh clamping component (160).

2. A leg traction frame for a bed according to claim 1, characterized in that: The outer wall of the positioning column (112) is evenly provided with three groups of receiving grooves (113), the side wall of the receiving groove (113) is rotatably connected with a column rotating plate (114), the side wall of the column rotating plate (114) is fixedly provided with a clamping column (115), the end wall of the column rotating plate (114) is fixedly provided with a gear 1 (116), and the gear 1 (116) is located outside the positioning column (112), the top inner wall of the rotating ring (121) is provided with a wave groove (122), The inner wall of the wave groove (122) is evenly provided with a plurality of groups of clamping holes (123), and the clamping holes (123) are clamped with the clamping column (115). The outer wall of the top of the rotating ring (121) is rotatably connected with a rotating cover (130), and the rotating cover (130) is rotatably connected with the inner wall of the positioning column (112). The inner wall of the top of the rotating cover (130) is fixedly installed with an arc-shaped inner rack (131), and the arc-shaped inner rack (131) is provided with three groups, and is respectively meshed with three groups of gears (116).

3. A leg traction frame for a bed according to claim 1, characterized in that: The calf clamping assembly (140) comprises a square sliding shell (141), wherein the square sliding shell (141) is provided with two groups and is respectively fixedly connected to the outer walls of the two groups of calf assembly plates (111); the inner wall at the bottom of the square sliding shell (141) is rotatably connected to a second gear (142); a motor (143) is fixedly installed on the outer wall of the square sliding shell (141), and the output shaft of the motor (143) is fixedly connected to the end wall of the second gear (142); a sliding bar (144) is slidably connected to the inner wall of the square sliding shell (141); a base rack (145) is fixedly installed at the bottom of the sliding bar (144), and the base rack (145) is meshed with the second gear (142).

4. A leg traction frame for a bed according to claim 3, characterized in that: The outer side wall of the slide bar (144) is fixedly installed with an internal thread sleeve (146), and the internal thread sleeve (146) penetrates the side wall of the slide bar (144). The outer side wall of the slide bar (144) is slidably penetrated by a door-shaped socket (147). The inner wall of the middle part of the door-shaped socket (147) is rotatably penetrated by a screw rod (148), and the screw rod (148) is meshed with the internal thread sleeve (146). The outer side walls on both sides of the door-shaped socket (147) are fixedly installed with plastic Double buckle one (151), the outer wall of the two groups of the molded double buckle one (151) is fixedly installed with the same clamping strip one (150), the bottom of the square sliding shell (141) and the sliding strip (144) on one side are fixedly installed with an L-shaped plug (152), and the bottom of the square sliding shell (141) and the sliding strip (144) on the other side are fixedly installed with an L-shaped plug (153), and the L-shaped plug (152) is plugged into the corresponding L-shaped plug (153).

5. A leg traction frame for a bed according to claim 1, characterized in that: The thigh clamping assembly (160) comprises a bottom slide rail (161), the front end and both sides of the middle of the bottom slide rail (161) are rotatably connected with a connecting rod (162), both sides of the bottom slide rail (161) are provided with side clamps (163), the other ends of the two groups of connecting rods (162) on the same side are respectively rotatably connected to the two ends of the side clamps (163) on the side, and the top two ends of the side clamps (163) are fixedly installed with molded double buckles (164) ), the inner walls of the two groups of molded double buckles (164) are fixedly installed with the same clamping strip (165), the end of the clamping strip (165) is fixedly connected to the corresponding end wall of the thigh assembly plate (120), the end of the bottom slide bar (161) is slidably connected to a slide seat (166), both sides of the slide seat (166) are rotatably connected to connecting rods (167), and the other end of the connecting rod (167) is rotatably connected to the side wall of the side clamp plate (163) on that side.

6. A leg traction frame for a bed according to claim 4, characterized in that: Both sides of the bottom end of the bed body (200) are rotatably connected to crossbeam arms (210), the other end of the crossbeam arm (210) is rotatably connected to a support arm (220), the top inner wall of the support arm (220) is slidably connected to a cylinder (221), a support roller (222) is fixedly installed at the output end of the cylinder (221), and the support roller (222) can support the knee joint, a pneumatic support foot (230) is fixedly installed at the bottom end of the support arm (220), a rope winding roller (240) is plugged into the top end of the support arm (220), a traction rope (241) is wound around the rope winding roller (240), and the traction rope (241) is fixedly connected to the top of the two groups of L-shaped intubations (153).

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