CN221786883U - Traction bed - Google Patents

Abstract

The utility model discloses a traction bed, which comprises a sickbed, 冂 frames, clamping assemblies and rectangular frames, wherein the clamping assemblies are arranged on the sickbed; sickbed: the utility model discloses a novel traction bed for the human body, including the horizontal plate body, the left end of locking bolt and the horizontal plate body right flank contact of 冂 type frame, the middle part of sliding ring is equipped with the go-between, the outer cambered surface of go-between and the avoidance groove inner wall sliding connection that 冂 type frame horizontal plate body middle part set up, this traction bed also can not cause the bending and the removal of shank when patient's health moves by accident, has strengthened the effect of traction, is convenient for draw in, reduces occupation space, and the practicality is strong.

Description

A traction bed

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a traction bed.

Background Art

Medical devices refer to instruments, equipment, appliances, in vitro diagnostic reagents and calibrators, materials and other similar or related items that are used directly or indirectly on the human body. The purpose is to diagnose, prevent, monitor, treat or alleviate diseases; diagnose, monitor, treat, alleviate or compensate for injuries; inspect, replace, regulate or support physiological structures or physiological processes; support or maintain life; control pregnancy; provide information for medical or diagnostic purposes by examining samples from the human body, etc. An orthopedic traction bed is a type of medical device, which usually includes a bed body and a traction frame fixed above the bed body. A hanging frame is connected under the traction frame to fix the patient's legs to the hanging frame, thereby achieving the purpose of orthopedic traction treatment. In the orthopedic traction bed of the prior art, the position of the hanging frame is fixed, which is not convenient to adjust, making the traction process cumbersome and complicated. In addition, the existing traction bed hanging frame usually adopts a lifting or two splint clamping method, which is not firm enough to fix the human legs, affecting the traction effect. For this reason, we propose a traction bed.

Utility Model Content

The technical problem to be solved by the utility model is to overcome the existing defects and provide a traction bed which will not cause bending and movement of the legs when the patient's body moves accidentally, thereby enhancing the traction effect, being easy to fold, reducing the occupied space, being highly practical, and being able to effectively solve the problems in the background technology.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a traction bed, comprising a hospital bed, a shaped frame, a clamping assembly and a rectangular frame;

Hospital bed: The opposite outer sides of the two front and rear cross beams are provided with strip slide grooves, the lower ends of the relative inner sides of the two vertical plates of the shaped frame are provided with square sliders, and the square sliders are slidably connected with the corresponding inner walls of the strip slide grooves respectively, and the outer surface of the horizontal plate body of the shaped frame is slidably connected with a slip ring, and the middle part of the right side wall of the slip ring is threadedly connected with a locking bolt, and the left end of the locking bolt contacts the right side of the horizontal plate body of the shaped frame, and the middle part of the slip ring is provided with a first connecting ring, and the outer arc surface of the first connecting ring is slidably connected with the inner wall of the avoidance groove set in the middle part of the horizontal plate body of the shaped frame, and the inner wall of the first connecting ring is rotatably connected with a rotating shaft, and the lower end of the rotating shaft is provided with a horizontal plate, and there are two rectangular frames and they are distributed in parallel, and the rectangular frame on the left side is connected with the rectangular frame set inside the left end of the horizontal plate. The inner wall of the slide groove is slidably connected, the rectangular frame on the right side is fixedly connected to the right end of the horizontal plate, the interior of the rectangular frame is rotatably connected with a lifting and lowering adjustment component, the right end of the upper surface of the horizontal plate and the right end of the upper surface of the rectangular frame on the left side are symmetrically provided with vertical plates, and a worm is rotatably connected between the two vertical plates corresponding to each other in the longitudinal direction, and the top of the lifting and lowering adjustment component is provided with a worm gear ring, and the worm is respectively meshed with adjacent worm gear rings, and the outer surface of the rectangular frame is slidably connected with an L-shaped plate, and the rear ends of the horizontal plate bodies of the L-shaped plates are respectively fixedly connected to the adjacent lifting and lowering adjustment components, and the lower ends of the vertical plate bodies of the L-shaped plates are rotatably connected with a transmission shaft, and the rear ends of the transmission shafts are provided with a rotation locking component, and the rotation locking components are respectively fixedly connected to the lower surfaces of the horizontal plate bodies of the adjacent L-shaped plates;

Clamping components: They are fixedly connected to the front end of the transmission shaft. When the patient's body moves accidentally, it will not cause the legs to bend and move, which enhances the traction effect, facilitates folding, reduces space occupation, and is highly practical.

Furthermore, the lifting and lowering adjustment assembly includes a rotating drum, a spiral groove, a connecting shaft and a conical slider, the rotating drum is rotatably connected to the inner wall of the rectangular frame, the outer arc surface of the top of the rotating drum is provided with a worm ring, the side wall of the rotating drum is symmetrically provided with two spiral grooves, the inner wall of the spiral groove is slidably connected with a conical slider, the two ends of the connecting shaft are respectively fixedly connected to the left and right sides of the rear end of the adjacent L-shaped horizontal plate body, the left and right side walls of the rectangular frame are provided with strip avoidance grooves corresponding to the connecting shaft, the connecting shaft is respectively rotatably connected to the inside of the two adjacent conical sliders to adjust the height of the clamping assembly to meet the traction requirements for the patient's legs.

Furthermore, the clamping assembly includes an arc-shaped fixing plate, an arc-shaped dovetail groove, an arc-shaped sliding plate, an arc-shaped sliding bar, a through groove, an arc-shaped pressure plate and an adjusting screw. The arc-shaped fixing plates are respectively fixedly connected to the front ends of the transmission shafts. The inner arc surfaces of the arc-shaped fixing plates are arrayed with arc-shaped dovetail grooves. The outer arc surfaces of the arc-shaped sliding plates are arrayed with arc-shaped sliding bars. The arc-shaped sliding bars are respectively slidably connected to the inner walls of the corresponding arc-shaped dovetail grooves. The upper ends of the arc-shaped fixing plates are threadedly connected with adjusting screws. The middle part of the whole composed of the arc-shaped sliding plate and the arc-shaped sliding bar is provided with through grooves. The lower ends of the adjusting screws pass through the adjacent through grooves. The lower ends of the adjusting screws are rotatably connected with arc-shaped pressure plates, which facilitates the clamping and fixing of the patient's legs and improves the clamping effect.

Furthermore, the clamping assembly also includes a handle, which is respectively arranged on the left and right sides of the arc-shaped sliding plate to facilitate manual sliding of the arc-shaped sliding plate.

Furthermore, the rotation locking assembly includes a fixed cylinder, a T-rod, a second connecting ring, a spring and a toothed wheel, the fixed cylinders are respectively arranged on the lower surface of the horizontal plate body of the L-shaped plate, the T-rods respectively pass through the through holes arranged in the middle of the adjacent horizontal plate body of the L-shaped plate and the fixed cylinder and extend to the bottom of the fixed cylinder, the middle outer arc surface of the T-rod is provided with a second connecting ring, the upper end of the T-rod is sleeved with a spring, the two ends of the spring are respectively fixedly connected to the adjacent second connecting ring upper surface and the inner top wall of the fixed cylinder, the toothed wheels are respectively arranged at the rear end of the transmission shaft, and the lower ends of the T-rods are respectively inserted into the tooth grooves of the vertically corresponding toothed wheels to lock and fix the arc-shaped fixed plate to prevent it from rotating when the patient applies force.

Furthermore, it also includes a mounting block and a magnet, wherein the mounting block is symmetrically arranged at the left ends of the front and rear beams of the bed, and the magnets are respectively arranged inside the mounting block, and the magnets are respectively magnetically adsorbed to the lower ends of the vertical plates corresponding to the shaped frame, so as to facilitate the storage and fixation of the shaped frame.

Compared with the prior art, the beneficial effects of the utility model are: the traction bed has the following advantages:

The sliding ring is toggled back and forth, and the sliding ring drives the rotating shaft and the cross plate to move forward and backward through the first connecting ring, so as to adapt to the position of the patient's legs. Then the locking bolt is rotated, and the locking bolt moves to the left relative to the sliding ring. The locking bolt contacts the right side of the horizontal plate of the shaped frame, thereby locking the sliding ring. The worm is manually rotated, and the worm drives the rotating drum to rotate by meshing with the worm gear ring. During the rotation of the rotating drum, the conical slider is driven to move vertically through the spiral groove, and then the connecting shaft and the L-shaped plate are lifted and lowered to meet the height requirement of the patient's leg traction. Then the T-bar is lifted upward, and the T-bar drives the second connecting ring to move upward to squeeze the spring. At the same time, the lower end of the T-bar is separated from the tooth groove of the toothed wheel, releasing the locking limit of the transmission shaft, rotating the arc-shaped fixed plate to make it rotate along the axis of the transmission shaft, and then loosening the T-bar. The second connecting ring drives the T-bar to move down and reset under the elastic force of the spring, and then inserts the tooth of the toothed wheel again. The driving shaft is locked inside the groove, and the thigh part of the patient is placed inside the arc fixing plate on the left through the notch of the arc fixing plate, and the calf part of the patient is placed inside the arc fixing plate on the right, and the handle is pulled, and the handle drives the arc sliding plate and the arc sliding bar to rotate to the lower end of the arc fixing plate to seal the notch of the arc fixing plate, and then the adjusting screw is rotated, and the adjusting screw moves downward relative to the arc fixing plate and pushes the arc pressing plate to clamp and fix the patient's legs, thereby traction of the patient's legs. After use, the cross plate is rotated to make the cross plate consistent with the horizontal plate direction of the v-shaped frame, and then the v-shaped frame is pushed to the left side so that the magnet slightly adsorbs and fixes the v-shaped frame, thereby storing the v-shaped frame. The traction bed is simple and convenient to operate. When the patient's body moves accidentally, it will not cause bending and movement of the legs, thereby enhancing the traction effect, being easy to fold, reducing the occupied space, and having strong practicality.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the utility model;

Figure 2 is a schematic diagram of a partial explosion structure of the utility model;

FIG3 is a partial right side sectional plan view of the utility model.

In the figure: 1 hospital bed, 101 bar slide, 2 shaped frame, 201 avoidance groove, 3 slip ring, 4 first connecting ring, 5 rotating shaft, 6 horizontal plate, 7 lifting adjustment component, 71 rotating cylinder, 72 spiral slide, 73 connecting shaft, 74 tapered slider, 8 rotation locking component, 81 fixed cylinder, 82 T-bar, 83 second connecting ring, 84 spring, 85 toothed wheel, 9 clamping component, 91 arc fixed plate, 92 arc dovetail groove, 93 arc sliding plate, 94 arc slide, 95 through groove, 96 handle, 97 arc pressure plate, 98 adjusting screw, 10 rectangular frame, 11 vertical plate, 12 worm, 13 worm wheel ring, 14 L-shaped plate, 15 transmission shaft, 16 locking bolt, 17 mounting block, 18 magnet.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Please refer to Figures 1-3. This embodiment provides a technical solution: a traction bed, including a bed 1, a saddle frame 2, a clamping assembly 9 and a rectangular frame 10;

Bed 1: The two front and rear beams are provided with strip slides 101 on the opposite outer sides, and the two vertical plates of the shaped frame 2 are provided with square sliders at the lower ends of the inner sides, which are respectively connected to the inner walls of the corresponding strip slides 101. The outer surface of the horizontal plate of the shaped frame 2 is connected to the sliding ring 3, and the middle part of the right wall of the sliding ring 3 is threadedly connected with a locking bolt 16. The left end of the locking bolt 16 contacts the right side of the horizontal plate of the shaped frame 2. The middle part of the sliding ring 3 is provided with a first connecting ring 4. The first connecting ring 4 is connected to the outer surface of the horizontal plate of the shaped frame 2. The outer arc surface of the ring 4 is slidably connected to the inner wall of the avoidance groove 201 set in the middle of the horizontal plate of the profile frame 2. The inner wall of the first connecting ring 4 is rotatably connected with the rotating shaft 5. The locking bolt 16 is rotated, and the locking bolt 16 moves to the left relative to the slip ring 3. The locking bolt 16 contacts the right side of the horizontal plate of the profile frame 2, thereby locking the slip ring 3. The lower end of the rotating shaft 5 is provided with a horizontal plate 6. There are two rectangular frames 10 and they are distributed in parallel. The rectangular frame 10 on the left is slidably connected to the inner wall of the rectangular slide groove set inside the left end of the horizontal plate 6. The right side The rectangular frame 10 is fixedly connected to the right end of the horizontal plate 6, and the interior of the rectangular frame 10 is rotatably connected with the lifting adjustment component 7. The right end of the upper surface of the horizontal plate 6 and the right end of the upper surface of the rectangular frame 10 on the left are symmetrically provided with vertical plates 11, and the two vertical plates 11 corresponding to each other in the longitudinal direction are rotatably connected with a worm 12. The top of the lifting adjustment component 7 is provided with a worm ring 13, and the worm 12 is respectively meshed with the adjacent worm ring 13. The outer surface of the rectangular frame 10 is slidably connected with an L-shaped plate 14, and the L-shaped plate 14 The rear ends of the horizontal plates are fixedly connected to the adjacent lifting and adjusting components 7, which include a rotating drum 71, a spiral slide 72, a connecting shaft 73 and a tapered slider 74. The rotating drum 71 is rotatably connected to the inner wall of the rectangular frame 10, and the outer arc surface of the top of the rotating drum 71 is provided with a worm ring 13. The side walls of the rotating drum 71 are symmetrically provided with two spiral slides 72, and the inner walls of the spiral slides 72 are slidably connected with tapered sliders 74. The two ends of the connecting shaft 73 are respectively connected to the left and right sides of the rear ends of the adjacent L-shaped plate 14. The right and left sides are fixedly connected, and the left and right side walls of the rectangular frame 10 are provided with strip avoidance grooves corresponding to the connecting shaft 73. The connecting shaft 73 is rotatably connected with the inside of the two adjacent tapered sliders 74 respectively. The worm 12 is manually rotated, and the worm 12 drives the rotating drum 71 to rotate by meshing with the worm wheel ring 13. During the rotation of the rotating drum 71, the spiral slide groove 72 drives the tapered slider 74 to move vertically, and then the connecting shaft 73 and the L-shaped plate 14 are lifted and lowered to meet the height requirements of the patient's leg traction. The L-shaped plate 14 The lower ends of the vertical plates are rotatably connected to the transmission shafts 15, and the rear ends of the transmission shafts 15 are provided with rotation locking assemblies 8, which are respectively fixedly connected to the lower surfaces of the horizontal plates of the adjacent L-shaped plates 14, and the rotation locking assemblies 8 include a fixing cylinder 81, a T-shaped rod 82, a second connecting ring 83, a spring 84 and a toothed wheel 85, and the fixing cylinders 81 are respectively arranged on the lower surfaces of the horizontal plates of the L-shaped plates 14, and the T-shaped rods 82 respectively pass through the through holes arranged in the middle of the horizontal plates of the adjacent L-shaped plates 14 and the fixing cylinders 81. The T-shaped rod 82 extends to the bottom of the fixed cylinder 81. The middle outer arc surface of the T-shaped rod 82 is provided with a second connecting ring 83. The upper end of the T-shaped rod 82 is sleeved with a spring 84. The two springs 84 are respectively fixedly connected to the upper surface of the adjacent second connecting ring 83 and the inner top wall of the fixed cylinder 81. The toothed wheels 85 are respectively arranged at the rear end of the transmission shaft 15. The lower ends of the T-shaped rod 82 are respectively inserted into the tooth grooves of the vertically corresponding toothed wheels 85. When the T-shaped rod 82 is pulled upward, the T-shaped rod 82 drives the second connecting ring 83 to move toward the end. The spring 84 is squeezed and the lower end of the T-bar 82 is separated from the tooth groove of the toothed wheel 85, thereby releasing the locking limit of the transmission shaft 15. The arc-shaped fixing plate 91 is rotated to rotate along the axis of the transmission shaft 15, and then the T-bar 82 is released. The second connecting ring 83 drives the T-bar 82 to move down and reset under the elastic force of the spring 84, and then is inserted into the tooth groove of the toothed wheel 85 again to lock the transmission shaft 15, and the arc-shaped fixing plate 91 is locked and fixed to prevent it from rotating when the patient applies force.

Clamping assembly 9: respectively fixedly connected to the front end of the transmission shaft 15, the clamping assembly 9 includes an arc-shaped fixed plate 91, an arc-shaped dovetail groove 92, an arc-shaped sliding plate 93, an arc-shaped slide bar 94, a through groove 95, an arc-shaped pressure plate 97 and an adjusting screw 98. The arc-shaped fixed plate 91 is respectively fixedly connected to the front end of the transmission shaft 15, the inner arc surface of the arc-shaped fixed plate 91 is arrayed with arc-shaped dovetail grooves 92, the outer arc surface of the arc-shaped sliding plate 93 is arrayed with arc-shaped slide bars 94, and the arc-shaped slide bars 94 are respectively slidably connected with the inner wall of the corresponding arc-shaped dovetail groove 92, the upper end of the arc-shaped fixed plate 91 is threadedly connected with an adjusting screw 98, the middle part of the whole composed of the arc-shaped sliding plate 93 and the arc-shaped slide bar 94 is provided with a through groove 95, and the adjusting screw 9 The lower ends of the adjusting screws 98 are respectively connected to the arc-shaped pressing plates 97, which are convenient for clamping and fixing the patient's legs and improving the clamping effect. The clamping assembly 9 also includes handles 96, which are respectively arranged on the left and right sides of the arc-shaped sliding plate 93, so as to facilitate the manual sliding of the arc-shaped sliding plate 93. By pulling the handles 96, the handles 96 drive the arc-shaped sliding plate 93 and the arc-shaped sliding strip 94 to rotate to the lower end of the arc-shaped fixed plate 91 to block the gap of the arc-shaped fixed plate 91, and then the adjusting screw 98 is rotated. The adjusting screw 98 moves downward relative to the arc-shaped fixed plate 91 and pushes the arc-shaped pressing plate 97 to clamp and fix the patient's legs, thereby pulling the patient's legs.

Among them: it also includes a mounting block 17 and a magnet 18. The mounting block 17 is symmetrically arranged at the left ends of the front and rear beams of the bed 1. The magnets 18 are respectively arranged inside the mounting block 17. The magnets 18 are magnetically adsorbed to the lower ends of the vertical plates corresponding to the shaped frame 2, respectively, and the shaped frame 2 is pushed to the left, so that the magnet 18 slightly adsorbs and fixes the shaped frame 2, thereby storing the shaped frame 2 and reducing the occupied space.

The working principle of a traction bed provided by the utility model is as follows:

The patient lies on the upper surface of the bed 1 with his head facing the left side of the bed 1, and the slip ring 3 is moved forward and backward. The slip ring 3 drives the rotating shaft 5 and the cross plate 6 to move forward and backward through the first connecting ring 4, so as to adapt to the position of the patient's legs. Then the locking bolt 16 is rotated, and the locking bolt 16 moves to the left relative to the slip ring 3. The locking bolt 16 contacts the right side surface of the horizontal plate body of the profile frame 2, thereby locking the slip ring 3. The worm 12 is manually rotated, and the worm 12 drives the rotating drum 71 to rotate by meshing with the worm wheel ring 13. During the rotation of the cylinder 71, the spiral slide groove 72 drives the conical slider 74 to move vertically, and then the connecting shaft 73 and the L-shaped plate 14 are lifted and lowered to meet the height requirement of the patient's leg traction, and then the T-shaped rod 82 is pulled upward, and the T-shaped rod 82 drives the second connecting ring 83 to move upward to squeeze the spring 84. At the same time, the lower end of the T-shaped rod 82 is separated from the inner groove of the toothed wheel 85, and the locking limit of the transmission shaft 15 is released. The arc-shaped fixing plate 91 is rotated to make it rotate along the axis of the transmission shaft 15. Then, the T-bar 82 is loosened, and the second connecting ring 83 drives the T-bar 82 to move down and reset under the elastic force of the spring 84, and is inserted into the tooth groove of the toothed wheel 85 again to lock the transmission shaft 15. The thigh part of the patient is placed inside the arc-shaped fixing plate 91 on the left through the notch of the arc-shaped fixing plate 91, and the calf part of the patient is placed inside the arc-shaped fixing plate 91 on the right, and the handle 96 is pulled, and the handle 96 drives the arc-shaped sliding plate 93 and the arc-shaped sliding strip 94 to rotate to the arc-shaped fixing plate 91. Inside the lower end, the gap of the arc-shaped fixing plate 91 is blocked, and then the adjusting screw 98 is rotated. The adjusting screw 98 moves downward relative to the arc-shaped fixing plate 91 and pushes the arc-shaped pressing plate 97 to clamp and fix the patient's legs, thereby pulling the patient's legs. After use, the horizontal plate 6 is rotated to make the horizontal plate 6 consistent with the horizontal plate direction of the bevel frame 2, and then the bevel frame 2 is pushed to the left, so that the magnet 18 slightly adsorbs and fixes the bevel frame 2, thereby storing the bevel frame 2 and reducing the occupied space.

The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims (6)

1. A traction bed, characterized in that it comprises a bed (1), a shaped frame (2), a clamping assembly (9) and a rectangular frame (10); A hospital bed (1): The two front and rear cross beams are provided with strip-shaped slide grooves (101) on the opposite outer sides, and the lower ends of the two vertical plates of the shaped frame (2) are provided with square sliders, and the square sliders are respectively slidably connected to the inner walls of the corresponding strip-shaped slide grooves (101). The outer surface of the horizontal plate body of the shaped frame (2) is slidably connected to a slip ring (3), and the middle part of the right side wall of the slip ring (3) is threadedly connected to a locking bolt (16), and the left end of the locking bolt (16) is screwed to the shaped frame (2). The right side of the horizontal plate body is in contact with the first connecting ring (4), the middle part of the slip ring (3) is provided with a first connecting ring (4), the outer arc surface of the first connecting ring (4) is slidably connected to the inner wall of the avoidance groove (201) provided in the middle part of the horizontal plate body of the profile frame (2), the inner wall of the first connecting ring (4) is rotatably connected to a rotating shaft (5), the lower end of the rotating shaft (5) is provided with a horizontal plate (6), the rectangular frame (10) has two and is distributed in parallel, the rectangular frame (10) on the left side is slidably connected to the inner wall of the rectangular slide groove provided inside the left end of the horizontal plate (6) The rectangular frame (10) on the right side is fixedly connected to the right end of the transverse plate (6), and the interior of the rectangular frame (10) is rotatably connected to a lifting and lowering adjustment component (7). The right end of the upper surface of the transverse plate (6) and the right end of the upper surface of the rectangular frame (10) on the left side are symmetrically provided with vertical plates (11), and a worm (12) is rotatably connected between two vertical plates (11) corresponding to each other in the longitudinal direction. The top of each lifting and lowering adjustment component (7) is provided with a worm wheel ring (13), and the worm (12) is respectively connected to the adjacent The worm gear ring (13) is meshedly connected, the outer surface of the rectangular frame (10) is slidably connected to an L-shaped plate (14), the rear ends of the horizontal plates of the L-shaped plates (14) are respectively fixedly connected to the adjacent lifting adjustment components (7), the lower ends of the vertical plates of the L-shaped plates (14) are rotatably connected to the transmission shafts (15), the rear ends of the transmission shafts (15) are respectively provided with rotation locking components (8), and the rotation locking components (8) are respectively fixedly connected to the lower surfaces of the horizontal plates of the adjacent L-shaped plates (14); Clamping components (9) are respectively fixedly connected to the front ends of the transmission shafts (15). 2. A traction bed according to claim 1, characterized in that: the lifting and lowering adjustment component (7) comprises a rotating drum (71), a spiral slide groove (72), a connecting shaft (73) and a conical slider (74), the rotating drum (71) is rotatably connected to the inner wall of the rectangular frame (10), the outer arc surface of the top end of the rotating drum (71) is provided with a worm ring (13), the side wall of the rotating drum (71) is symmetrically provided with two spiral slide grooves (72), the inner wall of the spiral slide groove (72) is slidably connected with a conical slider (74), the two ends of the connecting shaft (73) are respectively fixedly connected to the left and right sides of the rear end of the horizontal plate body of the adjacent L-shaped plate (14), the left and right side walls of the rectangular frame (10) are provided with strip avoidance grooves corresponding to the connecting shaft (73), and the connecting shaft (73) is rotatably connected to the inside of the two adjacent conical sliders (74). 3. A traction bed according to claim 1, characterized in that: the clamping assembly (9) comprises an arc-shaped fixed plate (91), an arc-shaped dovetail groove (92), an arc-shaped sliding plate (93), an arc-shaped slide bar (94), a through groove (95), an arc-shaped pressure plate (97) and an adjusting screw (98), the arc-shaped fixed plate (91) is respectively fixedly connected to the front end of the transmission shaft (15), the inner arc surface of the arc-shaped fixed plate (91) is arrayed with an arc-shaped dovetail groove (92), the outer arc surface of the arc-shaped sliding plate (93) is The surface array is provided with an arc-shaped slide bar (94), and the arc-shaped slide bar (94) is slidably connected to the inner wall of the corresponding arc-shaped dovetail groove (92), and the upper end of the arc-shaped fixed plate (91) is threadedly connected to an adjusting screw (98), and the middle part of the whole composed of the arc-shaped sliding plate (93) and the arc-shaped slide bar (94) is provided with a through groove (95), and the lower end of the adjusting screw (98) passes through the inside of the adjacent through groove (95), and the lower end of the adjusting screw (98) is rotatably connected to the arc-shaped pressure plate (97). 4. A traction bed according to claim 3, characterized in that: the clamping assembly (9) further comprises a handle (96), and the handle (96) is respectively arranged on the left and right sides of the arc-shaped sliding plate (93). 5. A traction bed according to claim 1, characterized in that: the rotation locking assembly (8) comprises a fixing cylinder (81), a T-shaped rod (82), a second connecting ring (83), a spring (84) and a toothed wheel (85), the fixing cylinder (81) is respectively arranged on the lower surface of the horizontal plate body of the L-shaped plate (14), and the T-shaped rod (82) passes through the through holes arranged in the middle of the adjacent horizontal plate body of the L-shaped plate (14) and the fixing cylinder (81) and extends to the fixing cylinder (81). The T-shaped rod (82) is provided with a second connecting ring (83) on the outer arc surface in the middle part, and the upper end of the T-shaped rod (82) is sleeved with a spring (84), and the two ends of the spring (84) are respectively fixedly connected to the upper surface of the adjacent second connecting ring (83) and the inner top wall of the fixed cylinder (81), and the toothed wheels (85) are respectively arranged at the rear end of the transmission shaft (15), and the lower ends of the T-shaped rods (82) are respectively inserted into the tooth grooves of the vertically corresponding toothed wheels (85). 6. A traction bed according to claim 1, characterized in that it also includes a mounting block (17) and a magnet (18), wherein the mounting block (17) is symmetrically arranged at the left ends of the front and rear beams of the bed (1), and the magnets (18) are respectively arranged inside the mounting blocks (17), and the magnets (18) are respectively magnetically adsorbed to the lower ends of the vertical plates corresponding to the molded frame (2).