CN111938944A

CN111938944A - Multifunctional hospital bed

Info

Publication number: CN111938944A
Application number: CN202010829294.4A
Authority: CN
Inventors: 李强
Original assignee: Individual
Current assignee: Bao Weihao
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2020-11-17
Anticipated expiration: 2040-08-18
Also published as: CN111938944B

Abstract

The invention discloses a multifunctional hospital special sickbed, which comprises: the bed comprises a support part, a handrail part, a transmission mechanism part, a bed frame, a bed board A, a bed board B, a bed board C, a bed board D, a bed head, a bed bottom support, a fixed handle and wheels; the sliding block can move back and forth in the groove on the side face of the bed frame, the sliding block is fixed by being controlled by the button B when the sliding block moves to a proper position, and the groove rod can move up and down in the rod sleeve, so that the U-shaped support is adjusted to a proper height, and a patient can be helped to fix the arm or support the arm; when a person needs to have a rest, the armrests can be turned to be at the same level with the bed frame, the seat plate can be stretched by manually stretching the armrests to be opened, and then a rest place can be provided for the person; the switch is pressed down, and the motor drives the transmission mechanism to move partially, so that the angle of the bed board can be adjusted at any time, and the requirements of patients are met.

Description

Multifunctional hospital bed

Technical Field

The invention relates to the technical field of sickbed equipment, in particular to a multifunctional sickbed special for a hospital.

Background

The existing sickbeds are all of common lying types or sickbeds with a tiltable bed board at the back, people are troubled when patients go to visit, and the patients are inconveniently fixed or supported if legs or arms of the patients are injured, so that the sickbeds which can fix the legs or arms of the injured people and adjust the angles of the back and the legs of the bed board are needed to be invented.

Disclosure of Invention

Aiming at the problems, the invention provides a multifunctional hospital special sickbed, a sliding block can move back and forth in a groove on the side surface of a bedstead, the sliding block is fixed by being controlled by a button B when the sliding block moves to a proper position, and a groove rod can move up and down in a rod sleeve, so that a U-shaped support is adjusted to a proper height, and a patient can be helped to fix an arm or support the arm; when a person needs to have a rest, the armrests can be turned to be at the same level with the bed frame, the seat plate can be stretched by manually stretching the armrests to be opened, and then a rest place can be provided for the person; the switch is pressed down, and the motor drives the transmission mechanism to move partially, so that the angle of the bed board can be adjusted at any time, and the requirements of patients are met.

The technical scheme adopted by the invention is as follows: a multi-functional hospital-specific hospital bed comprising: the bed comprises a support part, a handrail part, a transmission mechanism part, a bed frame, a bed board A, a bed board B, a bed board C, a bed board D, a bed head, a bed bottom support, a fixed handle and wheels;

the bed frame comprises a bed frame, a support part, a bed board A, a bed board B, a bed board C, a bed board D and bed boards, wherein the support part is slidably arranged in a groove on the side surface of the bed frame, handrail parts are rotatably arranged on two sides of the bed frame, the bed board A is arranged at the position close to the rear inside the bed frame, the bed board B and the bed board C are arranged at the middle position inside the bed frame, the bed board D is arranged at the; the transmission mechanism part is positioned below the bedstead and is arranged on the bed bottom bracket, the bed bottom bracket is fixedly connected with the lower end surface of the support, and the upper end surface of the support is fixedly connected with the bedstead; the fixed handle is arranged on the rear end surface of the bed bottom bracket; the wheels are arranged on the lower end surface of the bed bottom bracket.

Further, the bracket portion includes: the sliding block, the button B, the round hole, the cylinder, the spring clamp position, the groove rod, the rod sleeve, the round square rod and the U-shaped bracket;

the sliding block is slidably arranged in a groove on the side surface of the bedstead, a cylinder is arranged inside the sliding block and movably connected with a round hole, and the round hole is arranged in the groove on the side surface of the bedstead; the button B is arranged on the outer side of the sliding block and can control the cylinder in the sliding block to stretch and retract; the cylinder is fixedly arranged on the sliding block; circular square pole rear end slidable mounting is in the cylinder side, circular square pole front end and rod cover fixed connection, and slidable mounting has the recess pole in the rod cover, and the spring screens is installed in the rod cover outside, spring screens and recess pole side hole activity lock, recess pole upper end and U type support lower extreme fixed connection.

Further, the armrest portion includes: the handrail fixing device is a handrail stretchable seat plate and is connected with the A, the small cylinder and the groove;

the lower end surface of the handrail fixing device is fixedly arranged on the side surface of the bed frame, and the upper end surface of the handrail fixing device and the rotating shaft of the handrail are arranged on the bed frame; the stretchable seat board of the handrail is arranged in the handrail interlayer in a sliding way, and the side surface of the stretchable seat board of the handrail is provided with a groove; the connection A is fixedly arranged inside the handrail; the small cylinder is fixedly arranged below the seat plate which can be stretched by the handrail and is rotatably connected with the outer side of the connection A.

Further, the transmission mechanism part comprises: a switch A; a switch B; switch C, connecting rod A, nut A, connecting B, blocking rod A, gear A, bevel gear B, gear C, straight cone integrated gear, bevel gear C, gear D, triangle A, triangle B, telescopic rod A, motor, triangle C, telescopic rod B, bevel gear D, telescopic rod C, connecting rod B, nut B, blocking rod B, blocking wheel A, gear E, rod A, rod B, motor support, bed low horizontal row support, lead screw A, lead screw B, support A, support B, bevel gear E, gear F, gear G, gear H, support C;

the switch A, the switch B and the switch C are fixedly arranged on the outer side of the bedstead; the bed low horizontal row bracket is fixedly arranged at the inner side of the bed bottom bracket; the support B is fixedly connected with the bed low transverse support, the right end of the support B is fixedly connected with the rod A, and the gear E is fixedly arranged at the left end of the upper rod of the support B; the nut B is rotatably arranged on the rod A, a bevel gear D is fixedly arranged on the rod A, the bevel gear D is meshed with the bevel gear E, and a clamping wheel A is fixedly arranged at the right end of the rod A; the clamping rod B is arranged on the clamping wheel A and is used for clamping or loosening the clamping wheel A; the connecting B is fixedly arranged on the nut B, is rotatably connected with the lower end of the connecting rod B, and the upper end of the connecting rod B is connected with a hinged support at the bottom of the bed board A; the lower end of a telescopic rod B is rotatably mounted on a bed low-transverse-row support, a gear F is mounted on the side surface of a sleeve of the telescopic rod B, a bevel gear E is mounted at the top end of the telescopic rod B, and a triangular plate C is rotatably mounted on the telescopic rod B; the rod B is rotatably arranged on the bed low transverse support, a gear G is arranged on the rod B and is meshed with a gear F, a bevel gear C is arranged at the upper end of the rod B, and the bevel gear C is meshed with the bevel gear end of the straight-cone integrated gear; the telescopic rod A is rotatably arranged on the bed low transverse support, a gear H is arranged on the telescopic rod A, the gear H is meshed with a gear G, a bevel gear B is arranged on the telescopic rod A, and a triangular plate B is rotatably arranged on the telescopic rod A; the bracket A is fixedly arranged on a bracket at the lower transverse row of the bed, the top end of the bracket A is rotatably provided with a lead screw B, and the top end of the lead screw B is fixedly provided with a gear C; the bevel gear A is fixedly arranged on the screw B, and the gear A is fixedly arranged on the screw B and positioned behind the bevel gear A; the blocking rod A is arranged above the gear A and moves or loosens the gear A through the blocking rod A; the nut A is rotatably arranged on the screw B, the nut A is provided with the connecting B, the lower end of the connecting rod A is rotatably connected with the connecting B, and the upper end of the connecting rod A is fixedly connected with the hinged support below the bed plate D; the bracket C is fixedly arranged on the inner side of the bedstead, a straight-cone integrated gear is rotatably arranged on the bracket C, the straight-cone integrated gear is meshed with the gear D, and the gear D is arranged on a rod below the bracket C after rotating; the motor supports fixed mounting on the low horizontal support of bed, and the motor is installed to the motor support upper end, and the motor shaft and the lead screw A fixed connection of motor, lead screw A left end and gear B fixed connection rotate on the lead screw A and install set-square A, and set-square A is located gear B's right side.

The invention has the beneficial effects that:

(1) the support with movable fixing and supporting can help the patient to fix the arm or support the arm;

(2) the four handrails can be used as guardrails and can also be used for people to rest;

(3) the bed board has the angle slope function, can adjust the angle of bed board at any time, adapts to patient's needs.

Drawings

Fig. 1, 2 and 3 are schematic overall structural diagrams of the present invention.

Fig. 4 is a schematic structural view of a part of the bracket of the invention.

Fig. 5 and 6 are schematic views of the structure of the armrest part of the invention.

Fig. 7, 8 and 9 are partial structural schematic diagrams of the transmission mechanism of the invention.

Fig. 10 is a partial enlarged view of the actuator portion a1 of the present invention.

Reference numerals:

1-a scaffold moiety; 2-a handrail portion; 3-a transmission mechanism part; 4-bed frame; 5-bed board A; 6-bed board B; 7-bed board C; 8-bed board D; 9-bed head; 10-a bed bottom bracket; 11-supporting; 12-a fixed handle; 13-wheels; 201-handrail fixing device; 202-stretchable seat panels with armrests; 203-connection A; 204-small cylinder; 205-grooves; 101-a slide block; 102-button B; 103-round holes; 104-cylinder; 105-spring clip; 106-grooved shaft; 107-rod sleeve; 108-round square rods; 109-U-shaped bracket; 301-switch a; 302-switch B; 303-switch C; 304-connecting rod a; 305-nut a; 306-connection B; 307-locking rod A; 308-gear A; 309-bevel gear A; 310-bevel gear B; 311-gear B; 312-gear C; 313-straight bevel integrated gear; 314-bevel gear C; 315-Gear D; 316-set square a; 317-a triangular plate B; 318-telescopic rod A; 319-motor; 320-set square C; 321-an expansion link B; 322-bevel gear D; 323-telescopic link C; 324-connecting rod B; 325-nut B; 326-seize bar B; 327-jammed wheel A; 328-gear E; 329-bar A; 330-bar B; 331-a motor support; 332-bed Low horizontal Row support; 333-screw A; 334-screw B; 335-bracket a; 336-support B; 337-bevel gear E; 338-gear F; 339-Gear G; 340-gear H; 341-scaffold C.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In an embodiment, as shown in fig. 1 to 10, a multifunctional hospital-dedicated hospital bed comprises: the bed comprises a support part 1, an armrest part 2, a transmission mechanism part 3, a bed frame 4, a bed board A5, a bed board B6, a bed board C7, a bed board D8, a bed head 9, a bed bottom support 10, a support 11, a fixed handle 12 and wheels 13;

the support part 1 is slidably arranged in a groove on the side surface of a bedstead 4, the two sides of the bedstead 4 are rotatably provided with armrest parts 2, a bed board A5 is arranged at the rear position inside the bedstead 4, a bed board B6 and a bed board C7 are arranged at the middle position inside the bedstead 4, a bed board D8 is arranged at the front and rear positions inside the bedstead 4, and the front end and the rear end of the bedstead 4 are respectively provided with a bed head 9; the transmission mechanism part 3 is positioned below the bedstead 4, the transmission mechanism part 3 is arranged on a bed bottom bracket 10, the bed bottom bracket 10 is fixedly connected with the lower end surface of a support 11, and the upper end surface of the support 11 is fixedly connected with the bedstead 4; the fixed handle 12 is arranged on the rear end face of the bed bottom bracket 10; the wheels 13 are arranged on the lower end surface of the bed bottom bracket 10.

In an alternative embodiment of the present invention, as shown in fig. 4, the holder part 1 includes: the device comprises a sliding block 101, a button B102, a round hole 103, a cylinder 104, a spring clip 105, a groove rod 106, a rod sleeve 107, a round square rod 108 and a U-shaped bracket 109;

the sliding block 101 is slidably arranged in a groove on the side surface of the bedstead 4, a cylinder is arranged inside the sliding block 101, the cylinder is movably connected with a round hole 103, and the round hole 103 is arranged in the groove on the side surface of the bedstead 4; the button B102 is arranged on the outer side of the sliding block 101 and can control the cylinder inside the sliding block 101 to stretch and retract; the cylinder 104 is fixedly arranged on the slider 101; the rear end of the round square rod 108 is slidably mounted on the side of the cylinder 104, the front end of the round square rod 108 is fixedly connected with the rod sleeve 107, the groove rod 106 is slidably mounted in the rod sleeve 107, the spring clamp 105 is mounted on the outer side of the rod sleeve 107, the spring clamp 105 is movably buckled with the side hole of the groove rod 106, and the upper end of the groove rod 106 is fixedly connected with the lower end of the U-shaped support 109.

In an alternative embodiment of the present invention, as shown in fig. 5 and 6, the armrest portion 2 includes: the handrail fixing device 201, the handrail stretchable seat plate 202, the connection A203, the small cylinder 204 and the groove 205;

the lower end surface of the handrail fixing device 201 is fixedly arranged on the side surface of the bedstead 4, and the upper end surface of the handrail fixing device 201 is connected with the rotating shaft of the handrail; the stretchable seat plate 202 of the handrail is slidably arranged in the interlayer of the handrail, and the side surface of the stretchable seat plate 202 of the handrail is provided with a groove 205; the connection A203 is fixedly arranged inside the handrail; the small cylinder 204 is fixedly arranged below the stretchable seat plate 202 of the handrail, and the small cylinder 204 is rotatably connected with the outer side of the connection A203.

In an alternative embodiment of the present invention, as shown in fig. 7 to 10, the transmission mechanism portion 3 includes: a switch A301; a switch B302; the device comprises a switch C303, a connecting rod A304, a nut A305, a connecting B306, a blocking rod A307, a gear A308, a bevel gear A309, a bevel gear B310, a gear B311, a gear C312, a straight and conical integrated gear 313, a bevel gear C314, a gear D315, a triangle plate A316, a triangle plate B317, a telescopic rod A318, a motor 319, a triangle plate C320, a telescopic rod B321, a bevel gear D322, a telescopic rod C323, a connecting rod B324, a nut B325, a blocking rod B326, a blocking wheel A327, a gear E328, a rod A329, a rod B330, a motor support 331, a bed low horizontal row support 332, a screw rod A333, a screw rod B334, a support A335, a support B336, a bevel gear E337, a gear F338, a gear G339, a gear H340 and a support C341;

the switch A301, the switch B302 and the switch C303 are fixedly arranged on the outer side of the bedstead 4; the bed low transverse support 332 is fixedly arranged at the inner side of the bed bottom support 10; the support B336 is fixedly connected with the bed low transverse support 332, the right end of the support B336 is fixedly connected with a rod A329, and the gear E328 is fixedly arranged at the left end of the upper rod of the support B336; the nut B325 is rotatably arranged on a rod A329, a bevel gear D322 is fixedly arranged on the rod A329, the bevel gear D322 is meshed with a bevel gear E337, and a blocking wheel A327 is fixedly arranged at the right end of the rod A329; the blocking rod B326 is arranged on the blocking wheel A327, and the blocking wheel A327 is blocked or loosened through the blocking rod B326; the connecting B306 is fixedly arranged on the nut B325, the connecting B306 is rotatably connected with the lower end of the connecting rod B324, and the upper end of the connecting rod B324 is connected with a hinged support at the bottom of the bed plate A5; the lower end of the telescopic rod B321 is rotatably mounted on a bed low transverse support 332, a gear F338 is mounted on the side surface of a sleeve of the telescopic rod B321, a bevel gear E337 is mounted at the top end of the telescopic rod B321, and a triangular plate C320 is rotatably mounted on the telescopic rod B321; the rod B330 is rotatably arranged on the bed low transverse row bracket 332, a gear G339 is arranged on the rod B330, the gear G339 is meshed with a gear F338, a bevel gear C314 is arranged at the upper end of the rod B330, and the bevel gear C314 is meshed with the bevel gear end of the straight bevel integrated gear 313; the telescopic rod A318 is rotatably installed on the bed low transverse support 332, the telescopic rod A318 is provided with a gear H340, the gear H340 is meshed with a gear G339, the telescopic rod A318 is provided with a bevel gear B310, and the telescopic rod A318 is rotatably provided with a triangle B317; the bracket A335 is fixedly arranged on the low transverse row bracket 332 of the bed, the top end of the bracket A335 is rotatably provided with a lead screw B334, and the top end of the lead screw B334 is fixedly provided with a gear C312; the bevel gear A309 is fixedly arranged on the screw B334, the gear A308 is fixedly arranged on the screw B334 and is positioned behind the bevel gear A309; the blocking rod A307 is arranged above the gear A308, and the gear A308 is moved or loosened through the blocking rod A307; the nut A305 is rotatably arranged on the lead screw B334, the nut A305 is provided with the connecting B306, the lower end of the connecting rod A304 is rotatably connected with the connecting B306, and the upper end of the connecting rod A304 is fixedly connected with a hinged support below the bed plate D8; the bracket C341 is fixedly arranged on the inner side of the bedstead 4, the bracket C341 is rotatably provided with a straight-cone integrated gear 313, the straight-cone integrated gear 313 is meshed with the gear D315, and the gear D315 is arranged on a rod below the bracket C341 after rotating; the motor support 331 is fixedly arranged on the bed low transverse support 332, the motor 319 is arranged at the upper end of the motor support 331, the motor shaft of the motor 319 is fixedly connected with the screw rod A333, the left end of the screw rod A333 is fixedly connected with the gear B311, the triangular plate A316 is rotatably arranged on the screw rod A333, and the triangular plate A316 is positioned at the right side of the gear B311.

The working principle of the invention is as follows:

the sliding block 101 can move back and forth on the groove on the side surface of the bedstead 4, the sliding block moves to a proper position, the cylinder in the sliding block 101 is controlled to be inserted into the round hole 103 to be fixed, when the round square rod 108 is pulled outwards to realize 360-degree rotation, the groove rod 106 can move up and down in the rod sleeve 107, and when the sliding block moves to a proper position, the sliding block is fixed by the spring clip 105, so that the U-shaped bracket 109 is adjusted to a proper height;

when a person needs to have a rest, the armrests can be turned to be flush with the bed frame 4, the seat plate 202 can be stretched by the armrests through manual operation, and then a rest place can be provided for the person;

switch a301 is pressed, gear B311 rotates with it as motor 319 rotates to generate force, under the action of the telescopic rod, the gear D315 is driven to rotate together at the position of the gear D315, the gear D315 drives the straight-cone integrated gear 313 to rotate so as to drive the bevel gear C314 to rotate, further the gear G339 rotates, the gear G339 drives the gear F338 to drive the bevel gear E337 to rotate so as to drive the bevel gear D322 to rotate, meanwhile, the gear G339 drives the gear H340 and the bevel gear B310 to rotate, the bevel gear B310 drives the bevel gear A309 to rotate so as to drive the screw rod B334 to rotate, the nut A305 sleeved outside the screw rod B334 can move back and forth according to the rotation of the screw rod B334 so as to generate thrust to push the lower end of the connecting rod A304 under the action of the connecting B306, so that the upper end of the connecting rod A304 pushes the bed plate D8 to reach different angles, meanwhile, the screw rod A333 rotates, and the nut B325 sleeved outside the screw rod A333 moves to drive the lower end of the connecting rod B324 to move, so that the upper end of the connecting rod B324 pushes the bed board A5 to reach different angles;

the switch B2 is pressed, when the motor 319 rotates to generate force, the gear B311 rotates along with the motor, the gear C312 is driven to rotate at the position of the gear C312 under the action of the telescopic rod to enable the triangular plate A316 to coincide with the triangular plate B317, the triangular plate B317 moves downwards, the telescopic rod A318 retracts to the bevel gear B310 on the telescopic rod A318, the bevel gear B310 does not engage with the bevel gear A309 any more, the gear B311 drives the gear C312 to rotate, the screw rod B334 rotates along with the gear C, the nut A305 sleeved outside the screw rod B334 moves to drive the lower end of the connecting rod B324 to move, and then the upper end of the connecting rod B324 only pushes the bed board D8 to adjust;

the switch C3 is pressed, when the motor 319 rotates to generate force, the gear B311 rotates along with the motor, the gear E328 is driven to rotate at the position of the gear E328 under the action of the telescopic rod to enable the bevel face of the triangular plate A316 to coincide with the bevel face of the triangular plate C320, the triangular plate C320 moves downwards, the telescopic rod B321 retracts to the bevel gear E337 on the telescopic rod B321, the bevel gear E337 moves downwards to be not meshed with the bevel gear D322, the gear B311 drives the gear E328 to rotate, the rod A329 rotates along with the gear E, the nut B325 sleeved outside the rod A329 moves, the nut B325 sleeved outside the lead screw A333 moves to drive the lower end of the connecting rod B324 to move, and the upper end of the connecting rod B324 pushes the.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Claims

1. A multifunctional hospital special sickbed is characterized by comprising: the bed comprises a support part (1), a handrail part (2), a transmission mechanism part (3), a bed frame (4), a bed plate A (5), a bed plate B (6), a bed plate C (7), a bed plate D (8), a bed head (9), a bed bottom support (10), a support (11), a fixed handle (12) and wheels (13);

the bed frame is characterized in that the support part (1) is slidably arranged in a groove in the side face of the bed frame (4), handrail parts (2) are rotatably arranged on two sides of the bed frame (4), a bed board A (5) is arranged at the position, close to the rear, in the bed frame (4), a bed board B (6) and a bed board C (7) are arranged at the middle position in the bed frame (4), bed boards D (8) are arranged at the front and rear positions in the bed frame (4), and a bed head (9) is arranged at the front end and the rear end of the bed frame (4); the transmission mechanism part (3) is positioned below the bedstead (4), the transmission mechanism part (3) is arranged on the bed bottom bracket (10), the bed bottom bracket (10) is fixedly connected with the lower end surface of the support (11), and the upper end surface of the support (11) is fixedly connected with the bedstead (4); the fixed handle (12) is arranged on the rear end surface of the bed bottom bracket (10); the wheels (13) are arranged on the lower end surface of the bed bottom bracket (10).

2. Multifunctional hospital bed according to claim 1 characterized in that said support part (1) comprises: the device comprises a sliding block (101), a button B (102), a round hole (103), a cylinder (104), a spring clamp (105), a groove rod (106), a rod sleeve (107), a round square rod (108) and a U-shaped bracket (109);

the sliding block (101) is slidably arranged in a groove in the side face of the bedstead (4), a cylinder is arranged inside the sliding block (101), the cylinder is movably connected with a round hole (103), and the round hole (103) is arranged in the groove in the side face of the bedstead (4); the button B (102) is arranged on the outer side of the sliding block (101) and can control the expansion and contraction of the inner cylinder of the sliding block (101); the cylinder (104) is fixedly arranged on the sliding block (101); circular square pole (108) rear end slidable mounting is in cylinder (104) side, circular square pole (108) front end and rod cover (107) fixed connection, slidable mounting has recess pole (106) in rod cover (107), spring screens (105) are installed to the rod cover (107) outside, spring screens (105) and recess pole (106) side hole activity lock, recess pole (106) upper end and U type support (109) lower extreme fixed connection.

3. The multifunctional hospital bed according to claim 1 wherein the armrest portion (2) comprises: the seat plate comprises an armrest fixing device (201), an armrest stretchable seat plate (202), a connecting A (203), small cylinders (204) and a groove (205);

the lower end surface of the handrail fixing device (201) is fixedly arranged on the side surface of the bed frame (4), and the upper end surface of the handrail fixing device (201) is connected with a rotating shaft of the handrail; the stretchable seat board (202) of the handrail is arranged in the handrail interlayer in a sliding way, and the side surface of the stretchable seat board (202) of the handrail is provided with a groove (205); the connection A (203) is fixedly arranged in the handrail; the small cylinder (204) is fixedly arranged below the stretchable seat plate (202) of the handrail, and the small cylinder (204) is rotatably connected with the outer side of the connection A (203).

4. The hospital bed according to claim, wherein the transmission mechanism part (3) comprises: a switch A (301); a switch B (302); switch C (303), connecting rod A (304), nut A (305), connection B (306), deadlocking rod A (307), gear A (308), bevel gear A (309), bevel gear B (310), gear B (311), gear C (312), straight-cone integrated gear (313), bevel gear C (314), gear D (315), set square A (316), set square B (317), telescopic link A (318), motor (319), set square C (320), telescopic link B (321), bevel gear D (322), telescopic link C (323), connecting rod B (324), nut B (325), deadlocking rod B (326), deadlocking wheel A (327), gear E (328), rod A (329), rod B (330), motor support (331), bed low transverse support (332), lead screw A (333), lead screw B (334), support A (335), support B (336), bevel gear E (337), gear F (338), gear G (339), gear H (340), bracket C (341);

the switch A (301), the switch B (302) and the switch C (303) are fixedly arranged on the outer side of the bedstead (4); the bed low transverse support (332) is fixedly arranged at the inner side of the bed bottom support (10); the support B (336) is fixedly connected with the bed low transverse support (332), the right end of the support B (336) is fixedly connected with the rod A (329), and the gear E (328) is fixedly arranged at the left end of the upper rod of the support B (336); the nut B (325) is rotatably arranged on the rod A (329), the rod A (329) is fixedly provided with a bevel gear D (322), the bevel gear D (322) is meshed with the bevel gear E (337), and the right end of the rod A (329) is fixedly provided with a clamping wheel A (327); the blocking rod B (326) is arranged on the blocking wheel A (327), and the blocking wheel A (327) is blocked or loosened through the blocking rod B (326); the connection B (306) is fixedly arranged on the nut B (325), the connection B (306) is rotatably connected with the lower end of the connecting rod B (324), and the upper end of the connecting rod B (324) is connected with a hinged support at the bottom of the bed plate A (5); the lower end of the telescopic rod B (321) is rotatably mounted on a bed low transverse support (332), a gear F (338) is mounted on the side surface of a sleeve of the telescopic rod B (321), a bevel gear E (337) is mounted at the top end of the telescopic rod B (321), and a triangular plate C (320) is rotatably mounted on the telescopic rod B (321); the rod B (330) is rotatably arranged on the bed low transverse support (332), a gear G (339) is arranged on the rod B (330), the gear G (339) is meshed with a gear F (338), a bevel gear C (314) is arranged at the upper end of the rod B (330), and the bevel gear C (314) is meshed with the bevel gear end of the straight bevel integrated gear (313); the telescopic rod A (318) is rotatably installed on the bed low transverse support (332), a gear H (340) is installed on the telescopic rod A (318), the gear H (340) is meshed with a gear G (339), a bevel gear B (310) is installed on the telescopic rod A (318), and a triangular plate B (317) is rotatably installed on the telescopic rod A (318); the support A (335) is fixedly arranged on the bed low transverse support (332), the top end of the support A (335) is rotatably provided with a lead screw B (334), and the top end of the lead screw B (334) is fixedly provided with a gear C (312); the bevel gear A (309) is fixedly arranged on the screw B (334), the gear A (308) is fixedly arranged on the screw B (335) and is positioned behind the bevel gear A (309); the blocking rod A (307) is arranged above the gear A (308), and the gear A (308) is moved or loosened through the blocking rod A (307); the nut A (305) is rotatably arranged on the lead screw B (334), the nut A (305) is provided with a connecting B (306), the lower end of the connecting rod A (304) is rotatably connected with the connecting B (306), and the upper end of the connecting rod A (304) is fixedly connected with a hinged support below the bed plate D (8); the bracket C (341) is fixedly arranged on the inner side of the bedstead (4), the bracket C (341) is rotatably provided with a straight-cone integrated gear (313), the straight-cone integrated gear (313) is meshed with the gear D (315), and the gear D (318) is arranged on a rod below the bracket C (341) after being rotated; the motor support (331) is fixedly installed on the bed low transverse support (332), the motor (319) is installed at the upper end of the motor support (331), a motor shaft of the motor (319) is fixedly connected with the screw rod A (333), the left end of the screw rod A (333) is fixedly connected with the gear B (311), the screw rod A (333) is rotatably installed with the triangular plate A (316), and the triangular plate A (316) is located on the right side of the gear B (311).