Medical ward car table top structure assembly

Abstract

The utility model discloses a kind of medical ward round car table top structure components, including ward round car pedestal, the upper end of the ward round car pedestal is equipped with medical kit, the upper end of the medical kit is equipped with operating table top;The upper end of the operating table top is equipped with operating board, the upper end rear side of the operating board is equipped with control computer;The upper end center of the operating table top is equipped with rotating cavity, bearing block is installed in the inside of the rotating cavity;The setting of this medical ward round car table top structure component, through the collaborative design of mechanical arm component and rotating shaft, the multidimensional flexible adjustment of control computer is realized, mechanical main arm and mechanical secondary arm can be respectively realized the accurate control of height and horizontal angle, rotating shaft cooperates rotating cavity and can be realized 360 ° horizontal rotation, medical staff need not to move car body to adjust computer to best line of sight and operating height, effectively reduce the labor intensity brought by action such as bending, side, reduce data entry error, improve operation comfort.

Description

Technical Field

[0001] This utility model relates to the field of ward round vehicle technology, specifically a medical ward round vehicle table structure component. Background Technology

[0002] In clinical medical settings, mobile ward round carts serve as core equipment for medical staff to work remotely, access medical records, and record patient data. They are widely used in ward rounds, emergency care, and postoperative nursing. Existing mobile ward round carts typically consist of a base, storage compartments, and an operating table. While they provide basic mobility and storage, with the advancement of smart healthcare, their structural design is increasingly revealing numerous adaptability deficiencies, specifically in the following aspects: Poor adjustability of the control computer position: Most existing ward round vehicles use fixed installations for their control computers (such as direct welding to the table or fixing with a simple bracket), which cannot be flexibly adjusted according to the height of medical staff, their operating posture (standing / sitting), or the space of the ward. Medical staff need to frequently bend over or turn to the side when recording data, which not only increases the intensity of labor but may also lead to data entry errors due to shifted line of sight. Insufficient stability and smoothness of rotating structures: Although some ward round carts have attempted to add rotating platforms, they mostly use a single bushing structure, lacking limiting and drag-reducing designs. After long-term use, bushing wear and rotational jamming are prone to occur, and even uneven force can cause the platform to tilt, posing a risk of equipment tipping over or data terminal damage, making it difficult to meet the high-frequency rotational operation needs of clinical practice; therefore, existing technology needs to be improved. Utility Model Content

[0003] The purpose of this invention is to provide a medical ward round cart tabletop structure component to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a medical ward round cart platform structure component, including a ward round cart base, a medical box mounted on the upper end of the ward round cart base, and an operating table mounted on the upper end of the medical box; an operating board mounted on the upper end of the operating table, and a control computer mounted on the rear side of the upper end of the operating board; a rotating cavity is formed at the center of the upper end of the operating table, a bearing seat is installed inside the rotating cavity, a rotating shaft is installed inside the bearing seat, and a robotic arm assembly is mounted on the rear side wall of the control computer, with the lower end of the robotic arm assembly connected to the rotating shaft.

[0005] As a preferred embodiment of the medical rounds cart platform structure component of this utility model, the robotic arm component includes a support seat mounted on the upper end of a rotating shaft, a main robotic arm mounted on the upper end of the support seat, a secondary robotic arm assembled at the end of the main robotic arm, and a control computer mounted at the end of the secondary robotic arm.

[0006] As a preferred embodiment of the medical rounds cart platform structure component of this utility model, the bearing seat includes a shaft cylinder a and a shaft cylinder b arranged opposite to each other, the rotating shaft is installed inside the shaft cylinder a and the shaft cylinder b, and limit ring plates are installed at both the upper and lower ends of the shaft cylinder a and the shaft cylinder b after assembly are engaged in the rotating cavity by the limit ring plates.

[0007] As a preferred embodiment of the medical rounds cart table structure component of this utility model, the inner walls of the shaft cylinders a and b are provided with rotating cavities evenly spaced along their axes, and ball bearings are installed inside the rotating cavities, with the ball bearings fitting snugly against the outer wall of the rotating shaft.

[0008] As a preferred embodiment of the medical rounds cart platform structure component of this utility model, connecting plates are installed on both outer walls of the shaft cylinders a and b, and screw holes are opened on the side walls of the connecting plates, with bolts installed inside the screw holes.

[0009] As a preferred embodiment of the medical rounds cart platform structure component of this utility model, both of the limiting ring plates have fixing holes on their side walls.

[0010] As a preferred embodiment of the medical ward round cart platform structure component of this utility model, the operation panel is equipped with an operation keyboard, which is connected to a control computer, and omnidirectional wheels are installed at the four corners of the bottom of the ward round cart base.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the structure of the medical rounds cart tabletop component is reasonably designed; Through the coordinated design of the robotic arm components (carrier + main robotic arm + auxiliary robotic arm) and the rotating axis, multi-dimensional and flexible adjustment of the control computer is achieved. The main robotic arm and auxiliary robotic arm can achieve precise control of height and horizontal angle respectively, while the rotating axis, in conjunction with the rotating cavity, can achieve 360° horizontal rotation. Medical staff can adjust the computer to the optimal line of sight and operating height (suitable for height ranges of 1.5-1.9m) without moving the vehicle body, effectively reducing the labor intensity caused by bending over and turning to the side, reducing data entry errors, and improving operating comfort. The bearing housing adopts a "shaft cylinder a + shaft cylinder b" mating design, combined with a ball bearing structure evenly distributed on the inner wall, which significantly reduces the friction coefficient between the rotating shaft and the shaft cylinder, making the rotation operation smoother and avoiding the jamming problem of the existing single shaft sleeve structure. At the same time, the upper and lower limit ring plates can firmly lock the bearing housing into the rotating cavity to prevent axial displacement during rotation. Combined with the fixing effect of the connecting plate and bolts, it ensures that the structure remains stable even after long-term high-frequency use, avoiding the risk of table tilting or equipment tipping over. Compared with the existing structure, the service life is extended by more than 30%. Attached Figure Description

[0012] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram of the robotic arm assembly of this utility model; Figure 4 This is a schematic diagram of the bearing housing of this utility model.

[0013] In the diagram: 1. Base of the ward round cart; 2. Casters; 3. Medical kit; 4. Control computer; 5. Control panel; 6. Keyboard; 7. Mechanical auxiliary arm; 8. Mechanical main arm; 9. Support seat; 10. Operating table; 11. Rotating cavity; 12. Bearing seat; 121. Shaft a; 122. Shaft b; 123. Limiting ring plate; 13. Rotating shaft; 14. Fixing hole; 15. Rotating cavity; 16. Ball bearing; 17. Connecting plate; 18. Screw hole; 19. Bolt. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4 This utility model provides a technical solution: In this technical solution, a medical rounds cart platform structure component includes a rounds cart base 1, a medical box 3 is mounted on the upper end of the rounds cart base 1, and an operating table 10 is mounted on the upper end of the medical box 3; an operating board 5 is mounted on the upper end of the operating table 10, and a control computer 4 is mounted on the rear side of the upper end of the operating board 5; a rotating cavity 11 is opened at the center of the upper end of the operating table 10, a bearing seat 12 is installed inside the rotating cavity 11, a rotating shaft 13 is installed inside the bearing seat 12, and a robotic arm assembly is mounted on the rear side wall of the control computer 4, with the lower end of the robotic arm assembly connected to the rotating shaft 13.

[0016] The base 1 of the ward round cart is made of 304 stainless steel and has a rectangular frame structure with a cross-sectional dimension of 40mm×40mm and a wall thickness of 3mm. It has the characteristics of corrosion resistance and strong load-bearing capacity, and is suitable for the disinfection needs of medical scenarios. The upper surface of the base 1 has 4 M8 threaded holes (hole spacing of 600mm×400mm) processed by laser cutting, which are used to connect with the bottom of the medical box 3 by bolts to prevent the medical box 3 from shifting. The overall dimensions of the base 1 are 700mm (length) × 500mm (width) × 150mm (height), with a rated load-bearing capacity of ≥200kg. The bottom is reserved with 4 universal wheel mounting positions (hole diameter 12mm, hole spacing 100mm×100mm). The medical case 3 features a double-drawer structure (material same as base 1). The drawers utilize silent slides (model SKU3012, pull-out cycles ≥ 50,000). An ABS handle (100mm × 30mm × 10mm) is installed at the front of the drawer for easy opening and closing. Four positioning pins (8mm diameter, 10mm height, 600mm × 400mm spacing) are welded to the top of the medical case 3, precisely matching the positioning holes at the bottom of the work surface 10 to ensure coaxial assembly. The medical case 3 measures 680mm (length) × 480mm (width) × 400mm (height), with a single drawer capacity ≥ 50L and adjustable internal dividers (50mm adjustment interval). The work surface 10 is made of food-grade ABS composite board (15mm thickness, surface hardness ≥ HB, impact resistance ≥ 20kJ / m²), with dimensions of 750mm (length) × 550mm (width) and rounded edges (5mm radius) to prevent bumps and knocks. The control panel 5 is made of acrylic (10mm thick, light transmittance ≥92%) and is fixed to the operating table 10 with four M6 countersunk bolts (300mm × 200mm spacing). The bolt heads are flush with the surface of the control panel 5 to avoid obstructing operation. The control computer 4 uses a 15.6-inch medical touch screen (1920 × 1080 resolution, IP65 protection rating, supports operation with gloves). The back of the screen is detachably connected to the robotic arm assembly via a metal bracket, and the bracket surface is insulated (insulation resistance ≥100MΩ). The control panel 5 measures 400mm (length) × 300mm (width) and has a 5mm high edge to prevent liquid from flowing into the table gaps. The control computer 4 weighs ≤3kg, operates at DC12V, has a battery life ≥4h (built-in lithium battery capacity 20000mAh), and supports wireless WiFi (IEEE802.11a / b / g / n) and Bluetooth 5.0 connectivity. The rotating cavity 11 is machined by a CNC milling machine, with an inner wall roughness Ra≤1.6μm to ensure a tight fit with the bearing housing 12. The bearing housing 12 is made of 45# steel (heat-treated, hardness HRC28-32), and the rotating shaft 13 is made of 40Cr steel (chrome-plated, 15μm thick, improving wear resistance by 50%). Both ends of the shaft are chamfered (30° angle, 5mm length) for easy installation. The dimensions of the rotating cavity 11 are 100mm (inner diameter) × The inner wall of the cavity has an 80mm (depth) annular groove (10mm wide, 3mm deep) for engaging the limiting ring plate 123 of the bearing housing 12; the rotating shaft 13 has a diameter of 50mm and a length of 120mm, and a keyway (10mm×5mm×20mm) is machined at the lower end of the shaft to engage with the key inside the bearing housing 12 to transmit torque; the bearing housing 12 has an overall height of 70mm and an outer diameter of 98mm (clear fit with the rotating cavity 11, clearance 0.02-0.05mm). The robotic arm assembly is made of aluminum alloy (model 6061-T6, anodized surface, 10μm oxide film thickness), featuring lightweight (overall weight ≤5kg) and high strength. Precision bearings (model 6205, precision grade P5) are installed at each joint to ensure smooth rotation. Locking knobs (ABS material, 30mm diameter) are provided at the joints to manually lock the robotic arm position and prevent accidental rotation. The robotic arm assembly has a maximum extension length of 800mm, a minimum retracted length of 400mm, a vertical adjustment range of 300-600mm (relative to the operating table), a horizontal rotation angle of 0-360°, and a maximum load capacity of ≥8kg at the joints (compatible with the weight of the control computer 4). The bracket connecting the robotic arm and the control computer 4 is adjustable in angle (adjustment range -30° to 60°) to meet different viewing angle requirements.

[0017] In some technical solutions, the robotic arm assembly includes a support 9 mounted on the upper end of the rotating shaft 13, a main robotic arm 8 mounted on the upper end of the support 9, a secondary robotic arm 7 assembled at the end of the main robotic arm 8, and a control computer 4 mounted at the end of the secondary robotic arm 7.

[0018] The support base 9 is a circular structure (material same as the robotic arm), fixed to the upper end of the rotating shaft 13 by four M8 bolts (evenly distributed around the circumference, spaced φ80mm apart). The bolt heads are equipped with spring washers (model GB / T93-1987) to prevent loosening. The main robotic arm 8 and the support base 9, as well as the auxiliary robotic arm 7 and the main robotic arm 8, are connected by pins (pin material 40Cr, diameter 20mm, length 50mm). Cotter pins (model GB / T91-2000) are installed at both ends of the pins to prevent them from falling off. The support base 9 has a dimension of φ1. The main mechanical arm 8 is 350mm long and has a cross-sectional dimension of 30mm × 25mm. The auxiliary mechanical arm 7 is 250mm long and has a cross-sectional dimension of 25mm × 20mm. An L-shaped bracket (100mm × 80mm × 5mm) is installed at the end of the auxiliary mechanical arm 7. The bracket has four oblong holes (20mm long × 8mm wide) for adjusting the installation position of the control computer 4.

[0019] In some technical solutions, the bearing housing 12 includes a shaft cylinder a121 and a shaft cylinder b122 arranged opposite to each other. The rotating shaft 13 is installed inside the shaft cylinder a121 and the shaft cylinder b122. Limiting ring plates 123 are installed at the upper and lower ends of the shaft cylinder a121 and the shaft cylinder b122. The combined shaft cylinder a121 and the shaft cylinder b122 are engaged in the rotating cavity 11 by the limiting ring plates 123.

[0020] Shaft cylinders a121 and b122 are semi-circular structures (material same as bearing housing 12), which, after splicing, form a complete cylinder (inner diameter 50mm, transition fit with rotating shaft 13). The splicing surface is precision machined (flatness ≤0.02mm) to ensure a tight fit. The limiting ring plate 123 is an annular structure (material same as shaft cylinder), which is fixed to the upper and lower ends of the shaft cylinder by welding. The weld height is 5mm, and stress relief treatment is performed after welding to prevent deformation. The individual dimensions of shaft cylinders a121 and b122 are (height 70mm × semi-circular arc length 78.5mm × thickness 10mm), and the outer diameter of the cylinder after splicing is 98mm. The dimensions of the limiting ring plate 123 are (outer diameter 100mm × inner diameter 98mm × thickness 5mm). The outer side of the ring plate is machined with a protrusion (width 10mm × height 3mm), which precisely engages with the groove on the inner wall of the rotating cavity 11, with a engagement gap ≤0.1mm. The distance between the upper and lower limiting ring plates 123 is 60mm, which matches the depth of the rotating cavity 11.

[0021] In some technical solutions, rotating cavities 15 are evenly spaced along the axis of the inner walls of shaft cylinders a121 and b122. Ball bearings 16 are installed inside the rotating cavities 15 and are fitted to the outer wall of the rotating shaft 13.

[0022] The rotating cavity 15 has a hemispherical structure (machined by electrical discharge machining, with a surface roughness Ra≤0.8μm). Each rotating cavity 15 contains only one ball bearing 16 to prevent the balls from colliding with each other. The ball bearing 16 is made of GCr15 bearing steel (8mm in diameter, G10 precision grade, Ra≤0.025μm surface roughness), and is cleaned and rust-proofed before installation to ensure smooth rotation. Twelve rotating cavities 15 (circumferentially distributed, spaced 30° apart) are opened on the inner walls of shaft cylinders a121 and b122. The dimensions of the rotating cavity 15 are 8.2mm in diameter and 4mm in depth, and it is interference-fitted with the ball bearing 16 (interference amount 0.02-0.03mm). The contact pressure between the ball bearing 16 and the outer wall of the rotating shaft 13 is ≤500MPa to ensure no plastic deformation during long-term use. There are lubricating oil grooves (2mm wide × 1mm deep) machined between the rotating cavities 15, which can be filled with medical-grade petroleum jelly (USP grade) to improve the lubrication effect.

[0023] In some technical solutions, connecting plates 17 are installed on both outer walls of shaft cylinders a121 and b122. The side walls of the connecting plates 17 are provided with screw holes 18, and bolts 19 are installed inside the screw holes 18.

[0024] The connecting plate 17 is a rectangular steel plate (Q235 material, 8mm thickness), which is welded to the outer wall of the shaft cylinder (the welding position is located at the middle of the shaft cylinder height). The weld is a fillet weld (weld leg height 6mm), and after welding, it is ground to ensure a smooth surface. The screw hole 18 is an M10 threaded hole (depth 20mm, thread accuracy 6H), and the bolt 19 is a hex socket head cap screw (model GB / T70.1-2008, material 304 stainless steel, length 30m). (m), used with flat washers (model GB / T97.1-2002) and spring washers; connecting plate 17 is 60mm (length) × 30mm (width), one connecting plate is installed on each side of shaft cylinder a121 and a122, and the distance between connecting plates on the same side is 50mm; the center distance of screw hole 18 is 15mm from the outer wall of shaft cylinder, and the distance between adjacent screw holes is 25mm; the tightening torque of bolt 19 is 25-30N・m, to ensure that shaft cylinders a121 and a122 are tightly spliced ​​without loosening.

[0025] In some technical solutions, fixing holes 14 are provided on the side walls of both limiting ring plates 123.

[0026] The fixing hole 14 is a through hole (machined by a drilling machine, with a hole wall roughness Ra≤3.2μm) used to further fix the limiting ring plate 123 to the rotating cavity 11, preventing the bearing seat 12 from moving axially during rotation. Set screws (model GB / T75-1985) can be installed in the fixing hole 14. The end of the screw makes slight contact with the inner wall of the rotating cavity 11, which does not hinder rotation but also serves as a limiting function. Four fixing holes 14 are evenly opened on the side wall of each limiting ring plate 123 (circumferentially distributed, spaced at 90° intervals). The size of the fixing hole 14 is 6mm in diameter and 8mm in depth. The center of the hole is 10mm away from the edge of the limiting ring plate 123. The matching set screw is M5×8mm (material 304 stainless steel, with a flat end). After tightening, the contact pressure between the end of the screw and the inner wall of the rotating cavity 11 is ≤10N.

[0027] In some technical solutions, the control panel 5 is equipped with an operation keyboard 6, and the operation keyboard 6 is connected to the control computer 4. All four corners of the bottom of the RV base 1 are equipped with casters 2.

[0028] The keyboard 6 is a medical-grade waterproof keyboard (IP67 protection rating, silicone material, key life ≥1 million keystrokes). The bottom of the keyboard is equipped with four anti-slip feet (rubber material, 8mm in diameter, 3mm in height), which are fixed to the control panel 5 with Velcro (size 100mm×50mm) for easy removal and cleaning. The keyboard is connected to the control computer 4 via a USB Type-C cable (cable length 1.5m, outer layer of TPU material, bending resistance ≥10,000 times). The cable can be stored in the cable management channel under the control panel 5. The keypad 6 measures 300mm (length) × 120mm (width) × 15mm (height), with a key spacing of 19mm, and supports full-size input. The caster wheel 2 is a medical silent caster wheel (model TPR-50, wheel diameter 50mm, wheel width 20mm), with a load capacity of ≥50kg / piece. The braking method is dual brake (wheel brake + directional brake), and the wheel locking force after braking is ≥100N. The caster wheel 2 is fixed to the bottom of the base 1 with M10 bolts (length 25mm), and the bolts are used with anti-loosening nuts.

[0029] I. Work Process (I) Equipment Start-up and Preparation Phase Initial status check: Medical staff first confirm that the casters 2 at the bottom of the ward cart base 1 are in the unlocked state (double brakes released). After pushing the equipment to the target ward area, step on the wheel brakes and directional brakes of the casters 2 to fix the equipment (locking force ≥100N to prevent displacement during operation). Function activation: Open the double drawer of the medical case 3 and take out the required medical instruments (the drawer can be smoothly pulled out via the silent slide rail SKU3012, with a pull-out count of ≥50,000 times). At the same time, start the control computer 4 (built-in 20000mAh lithium battery, battery life ≥4h, supports DC12V power supply). Complete the system login through the medical waterproof keyboard 6 on the control panel 5 (IP67 protection, can be operated while wearing gloves) and prepare to carry out medical record work. (II) Computer Position Adjustment Stage Horizontal rotation adjustment: When medical staff need to adjust the orientation of the control computer 4, they can manually push the robotic arm assembly. At this time, the rotating shaft 13 rotates inside the bearing seat 12. The bearing seat 12 is made of shaft cylinder a121 and shaft cylinder b122. The GCr15 ball 16 (diameter 8mm, precision G10) in the inner wall rotating cavity 15 rolls against the outer wall of the rotating shaft 13, converting sliding friction into rolling friction, making the rotation smoother (the coefficient of friction is reduced by more than 60%), and realizing the horizontal rotation of the control computer 4 around the center of the rotating cavity 11 from 0 to 360°. Height and angle adjustment: To accommodate standing / sitting operation, medical staff should loosen the ABS locking knob (30mm in diameter) at the joint of the robotic arm assembly, and push the main robotic arm 8 (350mm in length) to rotate along the pin of the bearing seat 9 to adjust the vertical height (range 300-600mm, relative to the operating table 10); at the same time, rotate the secondary robotic arm 7 (250mm in length) and fine-tune the front and rear position of the control computer 4 through the waist-shaped hole (20mm long × 8mm wide) of the L-shaped bracket at the end. Finally, tighten the locking knob to lock the joint and ensure the computer position is stable (maximum joint load ≥8kg, suitable for computer weight ≤3kg). Screen viewing angle optimization: By manipulating the metal stand on the back of the computer (insulation resistance ≥100MΩ), the screen angle (range -30° to 60°) can be adjusted so that the medical staff's line of sight is perpendicular to the 15.6-inch touch screen (resolution 1920×1080), reducing visual fatigue and improving the accuracy of data entry. (III) Diagnosis and treatment procedures and data recording stage Multi-scenario adaptability: During ward rounds, medical staff can rotate the control computer 4 to the patient's bedside and connect to portable medical devices (such as ECG monitors) via Bluetooth 5.0 or WiFi (IEEE802.11a / b / g / n). They can import medical data through the USB 3.0 ports (2.4A fast charging) or HDMI ports on both sides of the computer, view it on the screen in real time, and record it via the keyboard 6. During operation, the 5mm high edge of the control panel 5 can prevent liquids such as disinfectant from flowing into the gaps on the table, and the anti-slip texture (friction coefficient ≥0.8) on the surface can prevent the keyboard 6 from sliding. Medical device retrieval coordination: When medical devices need to be retrieved during recording intervals, medical staff do not need to move the equipment. They only need to open the 3rd drawer of the medical case (the inner wall of the EVA cushioning pad is 5mm thick to prevent the device from being damaged by collision), quickly take out the item, and then close the drawer. The 3mm thick sound insulation cotton (sound insulation ≥20dB) on the lower surface of the 10th operating table can reduce the noise generated by the adjustment of the robotic arm and the opening and closing of the drawers, so as to avoid disturbing the patient's rest. (iv) Operation completion and reset maintenance phase Equipment reset: After the treatment, the medical staff loosens the robotic arm locking knob, retracts the main robotic arm 8 and the auxiliary robotic arm 7 to their minimum length (400mm), rotates the control computer 4 to the initial position parallel to the operating table 10, and tightens the locking knob; turns off the control computer 4, fixes the keyboard 6 to the center of the operating panel 5 with the bottom Velcro (100mm×50mm), and stores the USB cable in the cable tray below the operating panel 5. Cleaning and Maintenance: Wipe the work surface 10 (food-grade ABS composite board, resistant to alcohol corrosion), the work panel 5 (acrylic material, light transmittance ≥92%), and the keyboard 6 (surface antibacterial coating, antibacterial rate ≥99.9%) with 75% alcohol; regularly check the bolts 19 (M10 hex socket bolts, tightening torque 25-30 N·m) on the connecting plate 17 of the bearing seat 12, and check whether they are loose by checking the red tightening marks on the surface of the connecting plate. If maintenance is required, remove bolts 19 to separate the shaft cylinders a121 and a122, replace the ball bearings 16 or add USP-grade medical petroleum jelly (injected through the lubrication groove to improve lubrication). II. Core Working Principle (I) Rotation Adjustment Principle Bearing housing drag reduction principle: The bearing housing 12 adopts a "partitioned shaft cylinder + ball" structure. After the shaft cylinders a121 and a122 are spliced ​​together, they form a complete cylinder (inner diameter 50mm, transition fit with the rotating shaft 13). The balls 16 in the 12 evenly distributed rotating cavities 15 (spaced 30°) on the inner wall roll along the rotating cavities when the rotating shaft 13 rotates, which greatly reduces frictional resistance. Compared with the traditional single shaft sleeve structure, the friction force is reduced by more than 70%, achieving 360° smooth rotation. At the same time, the limiting ring plates 123 (outer diameter 100mm × thickness 5mm) at the upper and lower ends of the shaft cylinder are engaged in the grooves (width 10mm × depth 3mm) on the inner wall of the rotating cavity 11. With the help of the M5 set screws in the fixing holes 14 (ends embedded in the shallow grooves of the rotating cavity), the axial movement of the bearing housing 12 is restricted, ensuring rotational stability. Rotary shaft torque transmission principle: The rotary shaft 13 is made of 40Cr material (15μm chrome plating on the surface, which improves wear resistance by 50%). The lower end is machined with a 10mm×5mm×20mm keyway, which matches the key inside the bearing seat 12 to convert the thrust of the robotic arm assembly into rotational torque, driving the control computer 4 to rotate synchronously. The upper end has an M12 threaded hole (30mm deep) with a lock nut (torque 15-20N・m) to fix it to the bearing seat 9, ensuring lossless torque transmission. (II) Adjustment Principle of Robotic Arm Multi-joint linkage principle: The robotic arm assembly adopts a three-section structure of "carrier base + main arm + auxiliary arm". The carrier base 9 is fixed to the rotating shaft 13 by four M8 bolts (circumferentially distributed φ80mm). The top φ60mm×5mm positioning boss cooperates with the bottom groove of the main arm 8 to ensure the coaxiality of the main arm rotation. The main arm 8 and the auxiliary arm 7 are connected by a 40Cr pin (diameter 20mm). The two ends of the pin are cotter pins (GB / T91-2000) to prevent them from falling off, realizing multi-joint linkage adjustment. It can cover the operating range (maximum extension length) with a radius of 800mm centered on the rotating cavity 11, and adapt to different ward space layouts. Joint locking principle: The locking knob at the joint of the robotic arm has a built-in disc spring. When tightened, the spring is compressed to generate axial pressure, which makes the joint pin fit tightly with the bushing and locks the joint position through friction (the joint displacement after locking is ≤0.5mm). When the knob is loosened, the spring rebounds and releases the pressure, allowing the joint to rotate freely, balancing adjustment flexibility and position stability. (III) Structural Adaptation and Protection Principles Load-bearing and anti-deformation principle: The base 1 of the ward round cart adopts a 304 stainless steel rectangular frame (section 40mm×40mm, wall thickness 3mm), with two 30mm×30mm×650mm horizontal reinforcing ribs welded inside (spaced 300mm) to form a grid support structure. The rated load-bearing capacity is ≥200kg, which can support the total weight of the medical box 3 (680mm×480mm×400mm), the operating table 10 (750mm×550mm×15mm), and the robotic arm assembly (≤5kg), avoiding deformation after long-term use (deflection ≤0.2mm / m). Dustproof and antibacterial protection principle: A nitrile rubber dustproof sealing ring (5mm×5mm cross section) is installed at the bottom of the rotating cavity 11, and a silicone sealing strip (3mm×3mm) is pasted on the splicing surface of the shaft cylinders a121 and a122 to prevent dust and disinfectant from entering the bearing seat 12; a 50μm thick antibacterial coating (compliant with GB / T31402-2015) is sprayed on the surface of key components such as the base 1 and the operating keyboard 6, with an antibacterial rate of ≥99.9%, which can inhibit the growth of Escherichia coli and Staphylococcus aureus, and meet the strict hygiene requirements of medical scenarios.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A medical ward round cart platform structure component, comprising a ward round cart base (1), characterized in that, The upper end of the base (1) of the ward round vehicle is equipped with a medical box (3), and the upper end of the medical box (3) is equipped with an operating table (10). The upper end of the operating table (10) is equipped with an operating board (5), and the upper rear side of the operating board (5) is equipped with a control computer (4). A rotating cavity (11) is provided at the center of the upper end of the operating table (10). A bearing seat (12) is installed inside the rotating cavity (11). A rotating shaft (13) is installed inside the bearing seat (12). A robotic arm assembly is mounted on the rear side wall of the control computer (4), and the lower end of the robotic arm assembly is connected to the rotating shaft (13).

2. The medical rounds cart platform structure component according to claim 1, characterized in that, The robotic arm assembly includes a support (9) mounted on the upper end of a rotating shaft (13), a main robotic arm (8) mounted on the upper end of the support (9), a secondary robotic arm (7) mounted on the end of the main robotic arm (8), and a control computer (4) mounted on the end of the secondary robotic arm (7).

3. The medical rounds cart platform structure component according to claim 1, characterized in that, The bearing housing (12) includes a shaft cylinder a (121) and a shaft cylinder b (122) arranged opposite to each other. The rotating shaft (13) is installed inside the shaft cylinder a (121) and the shaft cylinder b (122). Limiting ring plates (123) are installed at the upper and lower ends of the shaft cylinder a (121) and the shaft cylinder b (122). The combined shaft cylinder a (121) and shaft cylinder b (122) are engaged in the rotating cavity (11) by the limiting ring plates (123).

4. The medical rounds cart platform structure component according to claim 3, characterized in that, The inner walls of the shaft cylinders a (121) and b (122) are provided with rotating cavities (15) evenly spaced along their axis. Ball bearings (16) are installed inside the rotating cavities (15), and the ball bearings (16) are fitted to the outer wall of the rotating shaft (13).

5. The medical rounds cart platform structure component according to claim 4, characterized in that, Both sides of the outer walls of the shaft cylinder a (121) and shaft cylinder b (122) are equipped with connecting plates (17), and the side walls of the connecting plates (17) are provided with screw holes (18), and bolts (19) are installed inside the screw holes (18).

6. The medical rounds cart platform structure component according to claim 3, characterized in that, The sidewalls of the two limiting ring plates (123) are provided with fixing holes (14).

7. The medical rounds cart platform structure component according to claim 1, characterized in that, The control panel (5) is equipped with an operation keyboard (6), and the operation keyboard (6) is connected to the control computer (4). The four corners of the bottom of the RV base (1) are all equipped with casters (2).

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