CT examination bed with adjustable bed surface

Abstract

The present invention relates to the technical field of CT examination beds, and discloses a CT examination bed with an adjustable bed surface, including an examination bed body installed on the side of a CT scanner, the examination bed body including a base fixedly installed on the ground, a lifting unit with a lifting effect is provided on the base, a bearing plate adapted to the CT scanner is provided on the top of the lifting unit, a bed board is provided on the upper surface of the bearing plate, a rotating unit for driving the lifting unit to rotate is provided in the base, the rotating unit includes a rotating gear provided at the lower part of the lifting unit and located in the base, a rotating motor is fixedly installed in the base, and a transmission gear meshing with the rotating gear is fixedly installed on the side of the output end of the rotating motor. In the present invention, by starting the rotating motor, the patient's legs are turned to the direction facing the CT scanner, and then the first drive unit and the second drive unit are started to move the bed board, thereby reducing the travel of the bed board movement, thereby improving the efficiency of examining the patient.

Description

Technical Field

[0001] The invention relates to the technical field of CT examination beds, in particular to a CT examination bed with an adjustable bed surface. Background Art

[0002] CT examination is based on the differences in the absorption and transmittance of X-rays by different tissues of the human body. It uses extremely sensitive instruments to measure the human body. The data obtained from the measurements is then input into an electronic computer. After the electronic computer processes the data, it can take cross-sectional or three-dimensional images of the examined part of the human body and detect small lesions in any part of the body. CT machines have exclusive matching examination beds that can automatically send patients to the X-ray area for filming through automated control.

[0003] After searching, it is found that the patent with patent publication number CN219846604U discloses a detachable CT examination bed protection device, including a base, the top of the base is slidably connected to a connecting seat, the outer side of the base is fixedly provided with a CT scanner, the top of the connecting seat is fixedly connected to an examination bed, the outer side of the examination bed is fixedly connected with a protection mechanism for protecting patients, and the interior of the protection mechanism is provided with an anti-touch mechanism for preventing the protection plate from touching the CT scanner; the detachable CT examination bed protection device, by pressing the anti-touch rod until it can no longer be pressed, the card block on the anti-touch rod will be separated from the card slot, at this time, the protection plate is pulled out from the inside of the connection frame through the anti-touch rod, pulled out a suitable distance as needed, and the anti-touch rod is released, which can reduce the labor intensity of medical staff and prevent the patient's hands and feet from accidentally falling into the gap between the examination bed and the CT scanner, causing the patient's arm or calf fracture.

[0004] The above patent has obvious beneficial effects, but still has the following shortcomings in actual operation:

[0005] The above-mentioned comparative documents provide protection for patients during CT examinations through protective mechanisms. However, in reality, due to the limited maximum scanning length of the CT scanner, when it is necessary to scan the patient's body below the knee joint, if the patient lies on the examination bed with his head facing the CT scanner, the examination bed will need to move a long distance, reducing the overall CT scanning efficiency and affecting the examination time of other patients. Therefore, there is an urgent need in the art to improve the CT examination bed to solve the defects of the prior art. Summary of the invention

[0006] In view of the deficiencies of the prior art, the present invention provides a CT examination bed with an adjustable bed surface to improve the efficiency of examining patients.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a CT examination bed with an adjustable bed surface, comprising an examination bed body installed on the side of a CT scanner, the examination bed body comprising a base fixedly installed on the ground, a lifting unit with a lifting effect is provided on the base, a bearing plate adapted to the CT scanner is provided at the top of the lifting unit, a bed board is provided on the upper surface of the bearing plate, a rotating unit for driving the lifting unit to rotate is provided in the base, the rotating unit comprises a rotating gear provided at the lower part of the lifting unit and located in the base, a rotating motor is fixedly installed in the base, a transmission gear meshing with the rotating gear is fixedly installed on the side of the output end of the rotating motor, a moving groove adapted to the rotating gear and penetrating the upper surface of the base is provided in the base, a first driving unit for driving the rotating gear to move along the length direction of the base is provided at one end of the base, a second driving unit for driving the bed board to move along the length direction of the bearing plate is provided at one end of the bearing plate, and edge protection units for protection are provided on multiple sides of the bearing plate.

[0008] Preferably, the lifting unit includes a fixed frame arranged on the upper surface of the base, a telescopic device with a multi-section telescopic effect is fixedly installed at the bottom of the fixed frame, a first lifting frame is movably connected inside the fixed frame, a second lifting frame is movably connected inside the first lifting frame, and the upper part of the second lifting frame is fixedly installed on the lower surface of the bearing plate.

[0009] Preferably, the first driving unit includes a first driving motor fixedly mounted at one end of the base, a connecting rotating shaft penetrating the rotating gear is fixedly connected to the lower part of the fixing frame, a first sliding seat is rotatably connected to the lower end of the connecting rotating shaft, the connecting rotating shaft is fixedly connected to the rotating gear, a first sliding groove adapted to the first sliding seat is formed on the inner side wall of the movable groove, a first screw rod having one end fixedly mounted to the output end of the first driving motor is rotatably connected in the first sliding groove, and the first screw rod penetrates the first sliding seat and is threadedly connected thereto.

[0010] Preferably, the second driving unit includes a second driving motor fixedly mounted on one end of the supporting plate, a second sliding seat is provided on the lower surface of the bed plate, a second sliding groove adapted to the second sliding seat is opened on the upper surface of the supporting plate, a second screw rod having one end fixedly mounted on the output end of the second driving motor is rotatably connected in the second sliding groove, and the second screw rod passes through the second sliding seat and is threadedly connected thereto.

[0011] Preferably, the edge protection unit comprises short side fixing plates fixedly mounted on the short side surfaces at both ends of the bearing plate, and long side movable plates with an adjusting effect are provided between both ends of the two short side fixing plates.

[0012] Preferably, a slide-out seat is fixedly mounted on the lower surface of the bed board, and a slide-out groove adapted to the slide-out seat is provided on the upper surface of the second slide seat and the opposite side of the bearing plate.

[0013] Preferably, adjustment blocks are fixedly connected to the side surfaces at both ends of the long side movable plates, adjustment grooves matching the adjustment blocks are provided at both ends of the short side fixed plates, an open groove is provided on one side of the adjustment block, a limit rod is movably connected in the open groove, a plurality of limit holes matching the limit rod are provided on one side of the short side fixed plate, an elastic spring is fixedly connected between one end of the limit rod and the inner side wall of the open groove, and an elastic extrusion frame with one end abutting against the end of the limit rod is fixedly installed on one side of the short side fixed plate.

[0014] Preferably, a plurality of adaptable magnetic strips having a magnetic attraction effect are embedded on the lower surface of the bed board and the upper surface of the load-bearing plate.

[0015] Preferably, the outer side surfaces of the first lifting frame and the second lifting frame are both fixedly connected with a plurality of limiting strips, and the inner side walls of the fixed frame and the first lifting frame are both provided with limiting grooves adapted to the limiting strips.

[0016] Preferably, a plurality of balls are embedded in the lower side of the rotating gear, and the balls are rotatable and the side surfaces thereof abut against the bottom of the movable groove.

[0017] In view of the deficiencies of the prior art, the present invention provides a CT examination bed with an adjustable bed surface, which overcomes the deficiencies of the prior art. The beneficial effects of the present invention are:

[0018] 1. In the present invention, by starting the rotating motor, the output end of the rotating motor drives the transmission gear to rotate, the transmission gear rotates to drive the rotating gear to rotate, the rotating gear drives the lifting unit to rotate, the lifting unit drives the load-bearing plate and the bed board to rotate, and the patient's legs are turned to the direction of the CT scanner, and then the first driving unit and the second driving unit are started to move the bed board, thereby reducing the travel of the bed board, thereby improving the efficiency of examining the patient.

[0019] 2. In the present invention, by starting the telescopic device, the telescopic end of the telescopic device drives the first lifting frame to rise, thereby realizing the lifting and lowering of the load-bearing plate, which is convenient for patients with limited mobility to lie on the bed board, and is more suitable for patients with multiple injuries.

[0020] 3. In the present invention, the first driving motor drives the carrier plate to move, and the second driving motor drives the bed plate to move, thereby extending the travel distance of the bed plate and improving the examination range of the patient.

[0021] 4. In the present invention, the bed board slides in the slide-out groove through the slide-out seat, and a part of the bed board can be smoothly moved out of the load-bearing plate, so that patients with limited mobility can get on and off the bed board easily.

[0022] 5. In the present invention, the patient is protected by providing a long side movable plate and a short side fixed plate, and the long side movable plate can slide in the adjusting groove through the adjusting block, and the short side fixed plate can be easily moved up and down through the cooperation of the limiting rod, the limiting hole and the limiting hole, thereby improving the safety during the examination and making the operation convenient and quick.

[0023] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0025] Figure 1 This is a schematic diagram of the structure of the present invention after overall installation;

[0026] Figure 2 It is a structural schematic diagram of the inspection bed in the present invention;

[0027] Figure 3 It is a schematic structural diagram of the inspection bed in the width direction of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the inspection bed in the length direction of the present invention;

[0029] Figure 5 for Figure 7 The enlarged structural diagram at A in the middle;

[0030] Figure 6 for Figure 7 The enlarged structural diagram at B in the middle;

[0031] Figure 7 for Figure 7 The enlarged structural diagram at C in the middle;

[0032] Figure 8 for Figure 7 The enlarged structural diagram at D in the middle;

[0033] Fig. 9 for Figure 7 The enlarged structural diagram at E in the middle;

[0034] Fig.10 for Figure 7 The enlarged structural diagram at F in the middle;

[0035] Fig.11 for Figure 7The enlarged structural diagram at G in the middle;

[0036] Fig.12 for Figure 7 Enlarged structural diagram at H in the middle.

[0037] In the figure: 1, CT scanner; 2, base; 3, lifting unit; 4, bearing plate; 5, bed plate; 6, first drive unit; 7, second drive unit; 8, edge protection unit; 9, rotating unit; 10, rotating gear; 11, rotating motor; 12, transmission gear; 13, moving slot; 14, fixed frame; 15, telescopic device; 16, first lifting frame; 17, second lifting frame; 18, first drive motor; 19, connecting rotating shaft; 20, first sliding seat; 21. First sliding groove; 22. First screw rod; 23. Second driving motor; 24. Second sliding groove; 25. Second sliding seat; 26. Second screw rod; 27. Short side fixed plate; 28. Long side movable plate; 29. ​​Slide-out seat; 30. Slide-out groove; 31. Adjustment block; 32. Adjustment groove; 33. Opening groove; 34. Limit rod; 35. Limit hole; 36. Spring; 37. Extrusion frame; 38. Magnetic strip; 39. Limit strip; 40. Limit groove; 41. Ball bearing. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1-Figure 12A CT examination bed with an adjustable bed surface comprises an examination bed body installed on the side of a CT scanner 1, the examination bed body comprises a base 2 fixedly installed on the ground, a lifting unit 3 with a lifting effect is arranged on the base 2, a bearing plate 4 adapted to the CT scanner 1 is arranged on the top of the lifting unit 3, a bed plate 5 is arranged on the upper surface of the bearing plate 4, a rotating unit 9 for driving the lifting unit 3 to rotate is arranged in the base 2, the rotating unit 9 comprises a rotating gear 10 arranged at the lower part of the lifting unit 3 and located in the base 2, a rotating motor 11 is fixedly installed in the base 2, and the output end side of the rotating motor 11 is fixed A transmission gear 12 meshing with the rotating gear 10 is installed, a movable groove 13 adapted to the rotating gear 10 and penetrating the upper surface of the base 2 is opened in the base 2, a first driving unit 6 for driving the rotating gear 10 to move along the length direction of the base 2 is provided at one end of the base 2, a second driving unit 7 for driving the bed board 5 to move along the length direction of the supporting plate 4 is provided at one end of the supporting plate 4, and edge protection units 8 for protection are provided on multiple sides of the supporting plate 4. A plurality of balls 41 are embedded in the lower side of the rotating gear 10, and the balls 41 can rotate and their sides are against the bottom of the movable groove 13.

[0040] Specifically, the examination bed is installed on one side of the CT scanner 1. When the patient needs to be examined, the patient lies on the bed board 5, and the first driving unit 6 is started to drive the lifting unit 3 to move, and the lifting unit 3 drives the carrying plate 4 to move. When the lifting unit 3 moves to one end close to the CT scanner 1, the second driving unit 7 is started, and the second driving unit 7 drives the bed board 5 to continue to move, ensuring the moving stroke length of the bed board 5 to ensure that the patient can be examined. When the patient with limited mobility lies on the bed board 5 with his head close to the CT scanner 1, and the patient needs to examine the lower part of the knee joint, at this time, by starting the rotating motor 11, the output end of the rotating motor 11 drives the transmission gear 12 to rotate, and the transmission gear 12 rotates to drive The rotating gear 10 rotates, and the rotating gear 10 drives the lifting unit 3 to rotate. The lifting unit 3 drives the supporting plate 4 and the bed board 5 to rotate, and the patient's legs are turned to the direction of the CT scanner 1. Then the first driving unit 6 and the second driving unit 7 are started to move the bed board 5, thereby reducing the travel of the bed board 5, thereby improving the efficiency of examining the patient. When the examination is completed, the first driving unit 6 drives the lifting unit 3 to move, and the rotating gear 10 returns to its original position and meshes with the transmission gear 12 again. The lifting unit 3 can raise and lower the height of the supporting plate 4, which is more suitable for patients with multiple injuries and is convenient for patients with limited mobility to lie on the bed board 5. The edge protection unit 8 is used to protect patients lying on the bed board 5.

[0041] As a technical optimization solution of the present invention, the lifting unit 3 includes a fixed frame 14 arranged on the upper surface of the base 2, a telescopic device 15 with a multi-section telescopic effect is fixedly installed at the bottom of the fixed frame 14, a first lifting frame 16 is movably connected inside the fixed frame 14, a second lifting frame 17 is movably connected inside the first lifting frame 16, the upper part of the second lifting frame 17 is fixedly installed on the lower surface of the bearing plate 4, the outer side surfaces of the first lifting frame 16 and the second lifting frame 17 are fixedly connected with a plurality of limit strips 39, and the inner side walls of the fixed frame 14 and the first lifting frame 16 are provided with limit grooves 40 adapted to the limit strips 39.

[0042] Specifically, when the height of the supporting plate 4 needs to be raised or lowered, the telescopic device 15 is started, and the telescopic end of the telescopic device 15 drives the first lifting frame 16 to rise, thereby realizing the lifting and lowering of the supporting plate 4, which is convenient for patients with limited mobility to lie on the bed board 5. At the same time, the setting of the fixed frame 14, the first lifting frame 16 and the second lifting frame 17 is used to protect the telescopic device 15 and improve the aesthetics of the overall inspection bed. When the first lifting frame 16 or the second lifting frame 17 rises, the limit bar 39 moves in the limit groove 40 to limit it.

[0043] As a technical optimization solution of the present invention, the first drive unit 6 includes a first drive motor 18 fixedly installed at one end of the base 2, a connecting rotating shaft 19 that passes through the rotating gear 10 is fixedly connected to the lower part of the fixed frame 14, and a first sliding seat 20 is rotatably connected to the lower end of the connecting rotating shaft 19. The connecting rotating shaft 19 is fixedly connected to the rotating gear 10, and a first sliding groove 21 that is adapted to the first sliding seat 20 is opened on the inner side wall of the movable groove 13. A first screw rod 22 with one end fixedly installed on the output end of the first drive motor 18 is rotatably connected in the first sliding groove 21, and the first screw rod 22 passes through the first sliding seat 20 and is threadedly connected thereto.

[0044] Specifically, when the first drive motor 18 is started, the output end of the first drive motor 18 drives the first screw rod 22 to rotate. When the first screw rod 22 rotates, it drives the first sliding seat 20 to slide in the first sliding groove 21. The first sliding seat 20 drives the connecting rotating shaft 19 to move, thereby realizing the movement of the fixed frame 14. At the same time, when the rotating gear 10 rotates, it drives the fixed frame 14 to rotate through the connecting rotating shaft 19.

[0045] As a technical optimization scheme of the present invention, the second drive unit 7 includes a second drive motor 23 fixedly mounted on one end of the supporting plate 4, a second sliding seat 25 is provided on the lower surface of the bed board 5, and a second sliding groove 24 adapted to the second sliding seat 25 is opened on the upper surface of the supporting plate 4. A second screw rod 26 having one end fixedly mounted on the output end of the second drive motor 23 is rotatably connected in the second sliding groove 24. The second screw rod 26 passes through the second sliding seat 25 and is threadedly connected thereto. A slide-out seat 29 is fixedly mounted on the lower surface of the bed board 5, and a slide-out groove 30 adapted to the slide-out seat 29 is opened on the upper surface of the second sliding seat 25 and the opposite side of the supporting plate 4, and a plurality of adapted magnetic strips 38 with a magnetic attraction effect are embedded on the lower surface of the bed board 5 and the upper surface of the supporting plate 4.

[0046] Specifically, the second drive motor 23 is started, and the output end of the second drive motor 23 drives the second screw rod 26 to rotate. When the second screw rod 26 rotates, it drives the second sliding seat 25 to slide in the second sliding groove 24, so as to realize the movement of the bed board 5. At the same time, for patients with limited mobility, the bed board 5 can be pushed out of a part of the supporting board 4 when transferring. When the bed board 5 is pushed out, the slide-out seat 29 moves in the slide-out groove 30, and the bed board 5 and the supporting board 4 are temporarily fixed by the magnetic strips 38 that are magnetically attracted to each other. When the bed board 5 needs to be moved out, the bed board 5 is pushed hard to separate the multiple magnetic strips 38.

[0047] As a technical optimization scheme of the present invention, the edge protection unit 8 includes a short side fixing plate 27 fixedly installed on the short side surfaces at both ends of the bearing plate 4, and a long side movable plate 28 with an adjustment effect is provided between the two ends of the two short side fixing plates 27, and the sides at both ends of the long side movable plates 28 are fixedly connected with adjustment blocks 31, and both ends of the short side fixing plates 27 are provided with adjustment grooves 32 adapted to the adjustment blocks 31, and an opening groove 33 is provided on one side of the adjustment block 31, and a limiting rod 34 is movably connected in the opening groove 33, and a plurality of limiting holes 35 adapted to the limiting rod 34 are provided on one side of the short side fixing plate 27, and an elastic spring 36 is fixedly connected between one end of the limiting rod 34 and the inner side wall of the opening groove 33, and an elastic extrusion frame 37 is fixedly installed on one side of the short side fixing plate 27, and one end of which is against the end of the limiting rod 34.

[0048] Specifically, when the patient lies on the bed board 5, by pressing the squeezing frame 37, one end of the squeezing frame 37 squeezes one end of the limiting rod 34 out of the limiting hole 35. At this time, the limiting rod 34 is completely located in the opening groove 33, and the spring 36 is compressed. At this time, the long side movable plate 28 can be moved up, and the adjustment block 31 slides in the adjustment groove 32. When the limiting rod 34 moves to the position of the upper limiting hole 35, the tension of the spring 36 pushes the limiting rod 34 to move, and one end of the limiting rod 34 is clamped in the limiting hole 35, so that the long side movable plate 28 can be limited and fixed. The short side fixed plate 27 and the long side movable plate 28 cooperate to protect the patient. After the inspection is completed, the long side movable plate 28 can be moved down by pressing the squeezing frame 37 again, thereby improving the safety during the inspection and being convenient and quick to operate.

[0049] Among them, all the above-mentioned electrical products can be purchased on the market. They are mature technologies and have been fully disclosed, so they are not repeated in the specification. All the above-mentioned electrical products are equipped with power connection lines, and they are electrically connected to the external main controller and 220V phase voltage (or 380V line voltage) through the power lines, and the main controller can be a conventional known device such as a computer that plays a control role.

[0050] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0051] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A CT examination bed with an adjustable bed surface, comprising an examination bed body installed on the side of a CT scanner (1), characterized in that: The examination bed comprises a base (2) fixedly mounted on the ground, a lifting unit (3) having a lifting effect is arranged on the base (2), a bearing plate (4) adapted to the CT scanner (1) is arranged at the top of the lifting unit (3), a bed plate (5) is arranged on the upper surface of the bearing plate (4), a rotating unit (9) for driving the lifting unit (3) to rotate is arranged in the base (2), the rotating unit (9) comprises a rotating gear (10) arranged at the bottom of the lifting unit (3) and located in the base (2), a rotating motor (11) is fixedly mounted in the base (2), and the rotating motor (11) A transmission gear (12) meshing with the rotating gear (10) is fixedly mounted on the side of the output end; a movable groove (13) adapted to the rotating gear (10) and penetrating the upper surface of the base (2) is provided in the base (2); a first driving unit (6) for driving the rotating gear (10) to move along the length direction of the base (2) is provided at one end of the base (2); a second driving unit (7) for driving the bed board (5) to move along the length direction of the bearing plate (4) is provided at one end of the bearing plate (4); and edge protection units (8) for protection are provided on multiple side surfaces of the bearing plate (4).

2. The CT examination bed with an adjustable bed surface according to claim 1, characterized in that: The lifting unit (3) comprises a fixed frame (14) arranged on the upper surface of the base (2), a telescopic device (15) with a multi-section telescopic effect is fixedly installed at the bottom of the fixed frame (14), a first lifting frame (16) is movably connected inside the fixed frame (14), a second lifting frame (17) is movably connected inside the first lifting frame (16), and the upper part of the second lifting frame (17) is fixedly installed on the lower surface of the bearing plate (4).

3. The CT examination bed with an adjustable bed surface according to claim 2, characterized in that: The first driving unit (6) comprises a first driving motor (18) fixedly mounted on one end of the base (2); a connecting rotating shaft (19) penetrating the rotating gear (10) is fixedly connected to the lower part of the fixing frame (14); a first sliding seat (20) is rotatably connected to the lower end of the connecting rotating shaft (19); the connecting rotating shaft (19) is fixedly connected to the rotating gear (10); a first sliding groove (21) adapted to the first sliding seat (20) is provided on the inner side wall of the movable groove (13); a first screw rod (22) having one end fixedly mounted on the output end of the first driving motor (18) is rotatably connected in the first sliding groove (21); the first screw rod (22) penetrates the first sliding seat (20) and is threadedly connected thereto.

4. The CT examination bed with an adjustable bed surface according to claim 1, characterized in that: The second drive unit (7) comprises a second drive motor (23) fixedly mounted on one end of the support plate (4); a second sliding seat (25) is provided on the lower surface of the bed plate (5); a second sliding groove (24) adapted to the second sliding seat (25) is provided on the upper surface of the support plate (4); a second screw rod (26) having one end fixedly mounted on the output end of the second drive motor (23) is rotatably connected in the second sliding groove (24); the second screw rod (26) passes through the second sliding seat (25) and is threadedly connected thereto.

5. The CT examination bed with an adjustable bed surface according to claim 1, characterized in that: The edge protection unit (8) comprises short side fixing plates (27) fixedly mounted on the short side surfaces at both ends of the bearing plate (4), and a long side movable plate (28) with an adjusting effect is provided between both ends of the two short side fixing plates (27).

6. The CT examination bed with an adjustable bed surface according to claim 4, characterized in that: A slide-out seat (29) is fixedly mounted on the lower surface of the bed board (5), and a slide-out groove (30) adapted to the slide-out seat (29) is provided on the upper surface of the second slide seat (25) and the opposite side of the bearing plate (4).

7. The CT examination bed with an adjustable bed surface according to claim 5, characterized in that: Both ends of the long side movable plate (28) are fixedly connected with adjustment blocks (31), both ends of the short side fixed plate (27) are provided with adjustment slots (32) adapted to the adjustment blocks (31), one side of the adjustment block (31) is provided with an open slot (33), a limit rod (34) is movably connected in the open slot (33), one side of the short side fixed plate (27) is provided with a plurality of limit holes (35) adapted to the limit rod (34), one end of the limit rod (34) is fixedly connected with an inner side wall of the open slot (33), and one side of the short side fixed plate (27) is fixedly installed with an elastic extrusion frame (37) whose one end abuts against the end of the limit rod (34).

8. The CT examination bed with an adjustable bed surface according to claim 6, characterized in that: A plurality of adapted magnetic strips (38) having a magnetic attraction effect are embedded on the lower surface of the bed board (5) and the upper surface of the bearing board (4).

9. The CT examination bed with an adjustable bed surface according to claim 2, characterized in that: The outer side surfaces of the first lifting frame (16) and the second lifting frame (17) are both fixedly connected with a plurality of limit strips (39), and the inner side walls of the fixed frame (14) and the first lifting frame (16) are both provided with limit slots (40) adapted to the limit strips (39).

10. The CT examination bed with an adjustable bed surface according to claim 1, characterized in that: A plurality of balls (41) are embedded on the lower side of the rotating gear (10); the balls (41) are rotatable and the side surfaces thereof abut against the inner bottom of the moving groove (13).

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