Medical sickbed caster capable of automatically cleaning wound hair
By installing automatic cutting devices on the casters of medical beds, the problem of poor operation of equipment caused by hair wrapping is solved, real-time automatic cleaning is achieved, the operation efficiency and reliability of the equipment are improved, and the maintenance costs are reduced.
Patent Information
- Application Number
- CN202411421870.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-01-10
AI Technical Summary
Traditional medical beds, trolleys and other mobile devices are prone to hair wrapping the wheel shaft during use, resulting in poor operation and lag in equipment. The existing cleaning methods are cumbersome and time-consuming, and real-time cleaning cannot be achieved, which increases frequent maintenance and waste of resources. .
Design a medical bed castor that automatically cleanses the wound hair, and realizes real-time cleaning by adding mechanical structures to the wheels, including cutting devices and spring mechanisms, as the wheel rotates.
It realizes that the wheels can be automatically cut through the hair by rotating, which is simple to operate, saves time and effort, improves the operating efficiency and reliability of the equipment, extends the service life of the equipment, and reduces maintenance costs and resource waste.
Smart Images
Figure CN119279945A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of medical casters, in particular to a medical bed caster capable of automatically cleaning hair entanglements. Background Art
[0002] Traditional medical beds, carts, stretchers and other mobile devices use conventional wheel designs, which are prone to hair entanglement in the wheel axle during use. Because hair is thin and flexible, it is difficult to clean it manually. The wheel axle entangled with hair will affect the operation of mobile devices such as beds, carts, stretchers, etc., and even cause them to become stuck and unable to move, causing inconvenience and safety hazards to medical staff, and increasing the workload and maintenance costs of hospitals.
[0003] Currently, the main way to deal with the problem of hair entanglement is to use cleaning tools for manual cleaning, but the operation is cumbersome, time-consuming and labor-intensive, and it is impossible to achieve real-time cleaning. This leads to frequent maintenance of medical mobile equipment, high cost of replacing parts, and serious waste of hospital resources. Summary of the invention
[0004] The present invention intends to provide a medical bed caster that can automatically clean hair entanglement. By adding a mechanical structure to the wheel, the structure will automatically pop out as the wheel rotates to cut off the hair entangled on the wheel axle, thereby solving the problem that the current hair cleaning method is cumbersome to operate, time-consuming and labor-intensive, and cannot achieve real-time cleaning.
[0005] In order to achieve the above object, the present invention provides the following technical solutions:
[0006] A medical bed caster for automatically cleaning hair entanglements comprises a braking device, one end of the braking device is rotatably connected to a connecting frame, the connecting frame is rotatably connected to a wheel via a wheel axle, cutting devices are provided on both sides of the connecting frame, the cutting device comprises a connecting rod rotatably connected to the connecting frame, one end of the connecting rod is rotatably connected to a slider, the slider is slidably connected to the connecting frame, the wheel is connected to a top block adapted to the slider, a first spring is connected between the connecting rod and the connecting frame, the other end of the connecting rod is rotatably connected to a cutting blade, the connecting frame is provided with a first through hole, the cutting blade is slidably connected to the first through hole, and the cutting blade contacts the wheel axle.
[0007] Furthermore, a strip groove along the axial direction of the wheel axle is formed on a side of the wheel axle close to the cutting blade.
[0008] Furthermore, the cross-section of one end of the slider close to the wheel is an inverted triangle, the top corner of the inverted triangle of the slider close to the top block is chamfered, and the cross-section of one end of the top block close to the slider is an equilateral triangle, and the top corner of the equilateral triangle of the top block close to the slider is chamfered.
[0009] Furthermore, the cutting blade is a polygonal blade, and each side of the cutting blade is provided with a cutting edge.
[0010] Further, the braking device includes a sleeve, in which a rotating block is rotatably connected, and the rotating block is connected to a pedal through a rotating rod. A first groove is provided on the edge of the rotating block, and one end of the sleeve away from the rotating block is rotatably connected to the connecting frame through a bearing. A brake rod is axially slidably connected to the sleeve, and the brake rod is sleeved with a second spring, one end of the second spring is connected to the brake rod, and the other end of the second spring is connected to the sleeve, and the end of the brake rod away from the rotating block is connected to a brake pad.
[0011] Furthermore, the brake rod is connected to a brake disc, the brake disc is located between the brake pad and the bearing, the brake disc is evenly connected to a plurality of first brake teeth along the circumferential direction, the connecting frame is provided with a plurality of second brake teeth, and the first brake teeth and the second brake teeth are arranged alternately.
[0012] Furthermore, the rotating block is provided with a second groove, the sleeve is connected to a limiting rod, and the limiting rod is located in the second groove.
[0013] Furthermore, a polygonal through hole is opened in the center of the rotating block, the cross-sectional shape of the rotating rod is adapted to the polygonal through hole, and the rotating rod is connected to the polygonal through hole of the rotating block.
[0014] Furthermore, a limiting groove is provided on the inner wall of the sleeve, a limiting block is connected to a corresponding position of the brake rod, and the limiting block is slidably connected in the limiting groove.
[0015] The principle and beneficial effects of the technical solution are:
[0016] 1. A medical bed caster for automatically cleaning hair entanglement provided by the present invention, wherein one end of a braking device is connected to a bed or a cart, and the other end of the braking device is connected to a wheel through a connecting frame, and a cutting device is provided on the connecting frame for cutting hair on the wheel axle in real time, and the cutting device comprises a connecting rod rotatably connected to the connecting frame, one end of the connecting rod is rotatably connected to a sliding block, and the sliding block is slidably connected to the connecting frame, and a corresponding position of the wheel is connected to a top block adapted to the sliding block, and the top block is used to squeeze the sliding block along the axial direction of the wheel axle so that the sliding block slides in a direction away from the wheel, and the other end of the connecting rod is rotatably connected to a cutting blade, and the connecting frame is provided with a first through hole, and the cutting blade is slidably connected in the first through hole, and the cutting blade contacts the wheel axle, so that the cutting blade cuts the hair wound on the wheel axle, and a first spring is provided between the connecting rod and the connecting frame, and one end of the first spring is connected to the connecting rod, and the other end is connected to the connecting frame; when the wheel rotates until the sliding block and the top block are in the same radial direction, the top block squeezes the sliding block to compress the sliding block. The first spring causes the slider to slide in a direction away from the wheel, driving one end of the connecting rod close to the slider to rotate in a direction away from the wheel, causing one end of the connecting rod close to the cutting blade to rotate in a direction close to the wheel, thereby driving the cutting blade to cut the hair on the wheel shaft along the axial direction of the wheel shaft in a direction close to the wheel; when the slider is separated from the top block, the slider rebounds to the initial position under the action of the rebound force of the first spring, driving one end of the connecting rod close to the slider to slide in a direction close to the wheel, and one end of the connecting rod close to the blade rotates in a direction away from the wheel, driving the cutting blade to cut the hair on the wheel shaft again along the axial direction of the wheel shaft in a direction away from the wheel; for every rotation of the wheel, the cutting blade will reciprocate and cut once along the axial direction of the wheel shaft; in this way, real-time automatic cleaning can be achieved, and automatic cutting can be performed only by rotating the wheel. The operation method is simple, time-saving and labor-saving, and the equipment operation efficiency and reliability are improved. It can also effectively extend the service life of the equipment, reduce maintenance costs, and save hospital resources;
[0017] 2. The present invention provides a medical bed caster that automatically cleans hair entanglement. A strip groove along the axial direction is provided on one side of the wheel shaft close to the cutting blade, so as to reserve a cutting space for the hair entangled on the wheel shaft, which is more convenient for the cutting blade to cut the hair. The cutting edge is a polygonal blade, which can be a quadrilateral or a pentagon. A blade is provided on each side of the cutting blade. When the cutting blade moves back and forth, the blade close to the wheel shaft and the blade close to the wheel can both cut the hair, thereby further increasing the efficiency of cutting the hair.
[0018] 3. The medical bed caster for automatically cleaning hair entanglement provided by the present invention has a cross section of one end of the slider close to the top block in the shape of an inverted triangle, and a cross section of the top block close to one end of the slider in the shape of an equilateral triangle, that is, when the top block contacts the slider, an inclined surface of the slider contacts an inclined surface of the top block, which is convenient for lifting the slider and reducing resistance; and the slider and the top block both have two inclined surfaces, and the wheel can cut hair when it rotates forward or reversely, further realizing real-time hair cutting and increasing the convenience of using the mobile device; and the relative top corners of the slider and the top block are both chamfered, that is, the bottom of the slider and the top of the top block are both arc-shaped, which can reduce friction resistance and the sound when the wheel rotates;
[0019] 4. The present invention provides a medical bed caster for automatically cleaning hair entanglements, wherein the braking device comprises a sleeve, a rotating block is rotatably connected inside the sleeve, the rotating block is connected to the pedal through a rotating rod, a first groove is provided on the edge of the rotating block, an end of the sleeve away from the rotating block is rotatably connected to the connecting frame through a bearing, so as to facilitate the rotation of the wheel and change the direction of travel, a brake rod is axially slidably connected inside the sleeve, the brake rod is in contact with the rotating block, a second spring is provided on the brake rod sleeve, one end of the second spring is connected to the brake rod, and the other end is connected to the sleeve, a brake pad is connected to the end of the brake rod away from the rotating block, and the brake rod is connected to a brake disc, the brake disc is located between the bearing and the brake pad, the brake disc is evenly connected to first brake teeth along the circumferential direction, a plurality of second brake teeth are connected to the connecting frame, and the first brake teeth and the second brake teeth are alternately arranged. The first brake tooth of the brake disc is engaged with the second brake tooth of the connecting frame, so that the connecting frame and the wheel cannot rotate along the sleeve, that is, cannot turn. After releasing the pedal, the spring rebounds and drives the brake rod to move upward, thereby separating the brake pad from the tire, and separating the first brake tooth of the brake disc from the second brake tooth of the connecting frame. In this way, the mobile device cannot turn and move forward, and braking is better achieved, shaking of the mobile device is avoided, and safety is increased.
[0020] 5. The present invention provides a medical bed caster for automatically cleaning hair entanglements, wherein the rotating block is provided with a second groove, the inner wall of the sleeve is connected to a limiting rod, the limiting rod is located in the second groove, and can limit the upward movement distance of the brake rod to avoid damage to parts; a polygonal through hole is provided in the center of the rotating block, the cross-section of the rotating rod is adapted to the polygonal through hole, and the rotating rod is connected in the through hole, which is convenient for installation and operation; a limiting groove is provided on the inner wall of the sleeve, the corresponding position of the brake rod is connected to a limiting block, and the limiting block is slidably connected in the limiting groove, which can limit the rotation of the brake rod along the circumferential direction, so that the first brake tooth of the brake disc can be better engaged with the second brake tooth of the connecting frame. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic structural diagram of a medical bed caster capable of automatically cleaning hair entanglements according to the present invention;
[0022] Figure 2 The partial structure of a medical bed caster wheel capable of automatically cleaning hair entanglement of the present invention is shown in FIG. Figure 1 ;
[0023] Figure 3 The partial structure of a medical bed caster wheel capable of automatically cleaning hair entanglement of the present invention is shown in FIG. Figure 2 ;
[0024] Figure 4 for Figure 3 Cross-sectional view of the middle BB;
[0025] Figure 5 This is a front view of a medical bed caster capable of automatically cleaning hair entanglements according to the present invention;
[0026] Figure 6 for Figure 5 Middle AA section view;
[0027] Figure 7 A bottom view of a medical bed caster capable of automatically cleaning hair entanglements according to the present invention;
[0028] Figure 8 It is a schematic structural diagram of a brake device for a medical bed caster capable of automatically cleaning hair entanglements according to the present invention;
[0029] Fig. 9 It is a structural schematic diagram of a wheel, a bracket and a cutting device of a medical bed caster capable of automatically cleaning hair entanglements according to the present invention;
[0030] The names of the corresponding marks in the accompanying drawings are:
[0031] Braking device 1, outer sleeve 11, screw hole 111, limiting rod 112, rotating block 12, first groove 121, second groove 122, rotating rod 13, pedal 14, first spring 55, inner sleeve 16, bearing 161, brake rod 17, 171 limiting block, limiting groove 172, brake disc 18, first brake tooth 181, brake pad 19, connecting frame 3, second brake tooth 31, second through hole 32, first through hole 33, wheel 4, wheel axle 41, top block 42, avoidance hole 43, strip groove 411, cutting device 5, connecting rod 51, cutting blade 52, slider 53, bracket 54, second spring 15. DETAILED DESCRIPTION
[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments:
[0033] like Figures 1 to 9As shown, a medical bed caster for automatically cleaning hair entanglement comprises a brake device 1, one end of the brake device 1 is rotatably connected to a connecting frame 3, the connecting frame 3 is composed of a round tube and a U-shaped frame, the U-shaped frame of the connecting frame 3 is rotatably connected to a wheel 4 through a wheel axle 41, the wheel 4 is rotatably connected to the wheel axle 41 through a bearing, and the wheel axle 41 is tightly connected to the U-shaped frame of the connecting frame 3; cutting devices 5 are arranged on both sides of the U-shaped frame of the connecting frame 3, which can cut hair entangled on the wheel axles on both sides of the wheel, the cutting device 5 comprises a connecting rod 51, a bracket 54 is connected to the connecting frame 3, and the connecting rod 51 and the bracket 54 are rotatably connected through a rotating shaft pin or a bearing. Connection; one end of the connecting rod 51 is rotatably connected to a slider 53, and the slider 53 is slidably connected to the connecting frame 3, that is, the connecting frame 3 is provided with a second through hole 32, and the slider 53 is slidably connected in the second through hole 32, and the wheel 4 is connected to a top block 42 adapted to the slider 53, and the cross-section of the slider 53 near the wheel 4 is an inverted triangle, and the inverted triangle of the slider 53 is chamfered near the top corner of the top block 42, and the cross-section of the top block 42 near the slider 53 is an equilateral triangle, and the equilateral triangle of the top block 42 is chamfered near the top corner of the slider 53, and a first spring 55 is connected between the connecting rod 51 and the connecting frame 3, and the first spring 5 5 is located between the slider 53 and the bracket 54; the other end of the connecting rod 51 is rotatably connected to a cutting blade 52 through a rotating shaft pin or a hinge. The cutting blade 52 is a rectangular blade, and each side of the cutting blade 52 is provided with a blade. The connecting frame 3 is provided with a first through hole 33, and the cutting blade 52 is slidably connected in the first through hole 33, and the cutting blade 52 is in contact with the wheel shaft 41, and a strip groove 411 along the axial direction of the wheel shaft 41 is provided on the side of the wheel shaft 41 close to the cutting blade 52, and an avoidance hole 43 is provided on the wheel 4 at a position corresponding to the cutting blade 52 to avoid damage to the blade and the wheel 4; wherein the cutting device 5 is detachable by bolts or buckles The unloading connection is provided with a dust cover to prevent dirt from being contaminated; in this embodiment, the braking device 1 includes a sleeve, which is composed of an outer sleeve 11 and an inner sleeve 16. A circular rotating block 12 is rotatably connected in the outer sleeve 11. A regular hexagonal through hole is provided in the center of the rotating block 12. The cross-sectional shape of the rotating rod 13 is a regular hexagon that matches the through hole of the rotating block 12. The rotating rod 13 is connected to the polygonal through hole of the rotating block 12. The rotating rod 13 is connected to a pedal 14, and a first groove 121 and a second groove 122 are provided on the edge of the rotating block 12. The sleeve is connected to a limiting rod 112, and the limiting rod 112 is located in the second groove 122;The inner sleeve 16 is sleeved in the outer sleeve 11, and the outer sleeve 11 and the inner sleeve 16 are both provided with screw holes 111, the outer sleeve 11 and the inner sleeve 16 are fastened together by bolts, one end of the inner sleeve 16 away from the rotating block 12 is rotatably connected to the round tube of the connecting frame 3 through a bearing 161, a brake rod 17 is axially slidably connected in the inner sleeve 16, and a limiting groove 172 is provided on the inner wall of the inner sleeve 16, a limiting block 171 is connected to the corresponding position of the brake rod 17, and the limiting block 171 is slidably connected in the limiting groove 172, the brake rod 17 is sleeved with a second spring 15, one end of the second spring 15 is connected to the brake rod 17, and the second spring 15 The other end is connected to the inner sleeve 16, and the end of the brake rod 17 away from the rotating block 12 is connected to the brake pad 19 and the brake disc 18, the brake disc is located between the brake pad 19 and the bearing 161, and the brake disc 18 is evenly connected with a plurality of first brake teeth 181 along the circumferential direction. A plurality of second brake teeth 31 are arranged in the circular tube of the connecting frame 3, and the first brake teeth 181 and the second brake teeth 31 are staggered, wherein the second brake teeth 31 are evenly distributed along part of the circumference, and symmetrical teeth can be arranged on the two opposite 60° sectors of the circular tube inner wall of the connecting frame 3, so as to facilitate the first brake teeth 181 to be riveted together when pressed down, and also save materials. ;
[0034] The specific implementation process is as follows:
[0035] When the moving device is pushed forward or backward and the wheel 4 rotates until the slider 53 contacts the top block 42, an inclined surface of the top block 42 on the wheel 4 contacts an inclined surface of the slider 53, and the wheel 4 continues to rotate. The top block 42 squeezes the slider 53 and compresses the first spring 55, so that the slider 53 slides in the direction away from the wheel 4, driving the end of the connecting rod 51 close to the cutting blade 52 to slide along the wheel axle 41 in the direction close to the wheel 4, cutting the hair wrapped around the wheel axle 41. The wheel 4 continues to rotate, the slider 53 separates from the top block 42, and the first spring 55 rebounds, driving the end of the connecting rod 51 close to the slider 53 to rotate in the direction close to the wheel 4, driving the slider 53 to rotate in the direction close to the wheel 4, so that the slider 53 returns to its initial state, and the end of the connecting rod 51 close to the cutting blade 52 slides in the direction away from the wheel 4, driving the cutting blade 52 to slide in the direction away from the wheel 4, and cutting the hair wrapped around the wheel axle 41 again.
[0036] In summary, in the medical bed caster for automatically cleaning hair entanglement of the present invention, one end of the brake device 1 is connected to a bed or a mobile device such as a cart, and the other end of the brake device 1 is connected to a wheel 4 through a connecting frame 3. A cutting device 5 is provided on the connecting frame 3 for cutting hair on the wheel shaft 41 in real time. The cutting device 5 includes a connecting rod 51 rotatably connected to the connecting frame 3, one end of the connecting rod 51 is rotatably connected to a slider 53, and the slider 53 is slidably connected to the connecting frame 3, and a top block 42 adapted to the slider 53 is connected to the corresponding position of the wheel 4, and the top block 42 is used to cut the hair on the wheel shaft 41 along the wheel shaft 41. The axial extrusion slider 53 makes the slider 53 slide in the direction away from the wheel 4. The other end of the connecting rod 51 is rotatably connected to the cutting blade 52. The connecting frame 3 is provided with a first through hole 33, and the cutting blade 52 is slidably connected in the first through hole 33. The cutting blade 52 contacts the wheel axle 41, so that the cutting blade 52 can cut the hair wound on the wheel axle 41. A first spring 55 is arranged between the connecting rod 51 and the connecting frame 3. One end of the first spring 55 is connected to the connecting rod 51, and the other end is connected to the connecting frame 3. When the wheel 4 rotates until the slider 53 and the top block 42 are in the same radial direction, The top block 42 squeezes the slider 53, compresses the first spring 55, and makes the slider 53 slide in the direction away from the wheel 4, driving the end of the connecting rod 51 close to the slider 53 to rotate in the direction away from the wheel 4, so that the end of the connecting rod 51 close to the cutting blade 52 rotates in the direction close to the wheel 4, thereby driving the cutting blade 52 to cut the hair on the wheel axle 41 along the axial direction of the wheel axle 41 in the direction close to the wheel 4; when the slider 53 is separated from the top block 42, the slider 53 rebounds to the initial position under the action of the rebound force of the first spring 55, driving the end of the connecting rod 51 close to the slider 53 to rotate in the direction close to the wheel 4 The end of the connecting rod 51 slides in the direction close to the wheel 4, and the end of the connecting rod 51 close to the blade rotates in the direction away from the wheel 4, driving the cutting blade 52 to cut the hair on the wheel axle 41 again along the axial direction of the wheel axle 41 toward the direction away from the wheel 4; every time the wheel 4 rotates one circle, the cutting blade 52 will reciprocate and cut once along the axial direction of the wheel axle 41; in this way, real-time automatic cleaning can be achieved, and automatic cutting can be performed only by rotating the wheel 4. The operation method is simple, time-saving and labor-saving, and the operating efficiency and reliability of the equipment are improved. It can also effectively extend the service life of the equipment, reduce maintenance costs, and save hospital resources.
[0037] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A medical bed caster with automatic cleaning function for removing hair entanglement, characterized in that: The invention comprises a braking device (1), one end of which is rotatably connected to a connecting frame (3), the connecting frame (3) is rotatably connected to a wheel (4) via a wheel axle (41), cutting devices (5) are arranged on both sides of the connecting frame (3), the cutting device (5) comprises a connecting rod (51) rotatably connected to the connecting frame (3), one end of the connecting rod (51) is rotatably connected to a slider (53), the slider (53) is slidably connected to the connecting frame (3), the wheel (4) is connected to a top block (42) matched with the slider (53), a first spring (55) is connected between the connecting rod (51) and the connecting frame (3), the other end of the connecting rod (51) is rotatably connected to a cutting blade (52), the connecting frame (3) is provided with a first through hole (33), the cutting blade (52) is slidably connected to the first through hole (33), and the cutting blade (52) is in contact with the wheel axle (41).
2. The automatic hair-entanglement-cleaning medical bed caster according to claim 1, characterized in that: A strip groove (411) is provided on one side of the wheel axle (41) close to the cutting blade (52) along the axial direction of the wheel axle (41).
3. The automatic hair-entanglement-cleaning medical bed caster according to claim 1, characterized in that: The cross section of the end of the slider (53) close to the wheel (4) is in the shape of an inverted triangle, and the top corner of the inverted triangle of the slider (53) close to the top block (42) is chamfered; the cross section of the end of the top block (42) close to the slider (53) is in the shape of an equilateral triangle, and the top corner of the equilateral triangle of the top block (42) close to the slider (53) is chamfered.
4. The automatic hair-entanglement-cleaning medical bed caster according to claim 1, characterized in that: The cutting blade (52) is a polygonal blade, and each side of the cutting blade (52) is provided with a cutting edge.
5. The automatic hair-entanglement-cleaning medical bed caster according to claim 1, characterized in that: The braking device (1) comprises a sleeve, a rotating block (12) is rotatably connected inside the sleeve, the rotating block (12) is connected to a pedal (14) via a rotating rod (13), a first groove (121) is provided on the edge of the rotating block (12), one end of the sleeve away from the rotating block (12) is rotatably connected to the connecting frame (3) via a bearing (161), a brake rod (17) is axially slidably connected inside the sleeve, the brake rod (17) is sleeved with a second spring (15), one end of the second spring (15) is connected to the brake rod (17), the other end of the second spring (15) is connected to the sleeve, and one end of the brake rod (17) away from the rotating block (12) is connected to a brake pad (19).
6. The automatic hair-entanglement-cleaning medical bed caster according to claim 5, characterized in that: The brake rod (17) is connected to a brake disc (18), and the brake disc (18) is located between the brake pad (19) and the bearing (161). The brake disc (18) is evenly connected to a plurality of first brake teeth (181) along the circumferential direction. The connecting frame (3) is provided with a plurality of second brake teeth (31), and the first brake teeth (181) and the second brake teeth (31) are arranged alternately.
7. The automatic hair-entanglement-cleaning medical bed caster according to claim 5, characterized in that: The rotating block (12) is provided with a second groove (122), the sleeve is connected to a limiting rod (112), and the limiting rod (112) is located in the second groove (122).
8. The automatic hair-entanglement-cleaning medical bed caster according to claim 5, characterized in that: A polygonal through hole is provided at the center of the rotating block (12); the cross-sectional shape of the rotating rod (13) is adapted to the polygonal through hole; and the rotating rod (13) is connected to the polygonal through hole of the rotating block (12).
9. The automatic hair-entanglement-cleaning medical bed caster according to claim 5, characterized in that: A limiting groove (172) is provided on the inner wall of the sleeve, a limiting block (171) is connected to a corresponding position of the brake rod (17), and the limiting block (171) is slidably connected in the limiting groove (172).