CN112754813B - Special hospital bed convenient to adjust for orthopedic patients - Google Patents

Special hospital bed convenient to adjust for orthopedic patients Download PDF

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Publication number
CN112754813B
CN112754813B CN202110109941.9A CN202110109941A CN112754813B CN 112754813 B CN112754813 B CN 112754813B CN 202110109941 A CN202110109941 A CN 202110109941A CN 112754813 B CN112754813 B CN 112754813B
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rod
outer side
sliding
patient
sickbed
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CN202110109941.9A
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CN112754813A (en
Inventor
芮伟
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Huizhou Kefu Industrial Co ltd
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Qu Yalong
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/015Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame divided into different adjustable sections, e.g. for Gatch position
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05Parts, details or accessories of beds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2210/00Devices for specific treatment or diagnosis
    • A61G2210/10Devices for specific treatment or diagnosis for orthopedics

Abstract

The invention discloses an orthopedic special sickbed convenient to adjust for orthopedic patients, which comprises a sickbed body, a rocker, a chain wheel and a sliding plate, wherein the rocker is connected to the edge of the sickbed body through a bearing, the chain wheel is connected to the outer side of the lower portion of the rocker in a key mode, a conical gear is fixed above the rotating rod, a rotating shaft is welded in front of the other conical gear, a vertical rod is connected to the inner portion of the left side of the chain wheel in a key mode, a lead screw is arranged above the vertical rod, the sliding plate is connected to the outer side of the lead screw in a threaded mode, a table plate is movably hinged to the left side of the upper portion of the sliding plate, a connecting shaft is connected to the inner bearing of the upper portion of the table plate, and a pull rod is welded to the outer side of the connecting shaft. This orthopedics patient installs the carton with the special sick bed of orthopedics of being convenient for to adjust for it takes out the inside paper of carton and fills up the enjoyment that carries out meal on the table surface to have been convenient for the patient through the carton, has avoided the patient to spill the meal on the table surface when having a dinner simultaneously, has increased holistic convenience.

Description

Special hospital bed convenient to adjust for orthopedic patients
Technical Field
The invention relates to the technical field of orthopedics, in particular to an adjustable special sickbed for orthopedics of an orthopedics patient.
Background
With the development of science and technology, medical equipment is gradually updated, and the medical equipment mainly refers to appliances, equipment, instruments and other articles of a human body which are used singly or in combination, and can be matched with corresponding software to perform comprehensive treatment according to needs, wherein orthopedic patients include various diseases, such as fracture, bone dislocation, comminuted fracture, lumbar disc protrusion and the like, for orthopedic patients with severe lumbar disc protrusion, the orthopedic patients need to be laid on a hospital bed for hospitalization in a short term or a long term, and the patients can only lie on the hospital bed to take care of their own diet without accompanying and caring of family members, while the current special hospital bed for orthopedics of medical equipment still has certain defects in use, such as:
1. the existing angle regulator of the special sickbed for orthopedics department is generally arranged at the bottom in front of the sickbed, and is inconvenient for a patient to adjust the angle by himself without accompanying with family members, so that the patient is very inconvenient for eating and living during treatment, and the waist of the patient is excessively stressed to cause the phenomenon of pain;
2. the existing small dining table for containing food of the special sick bed for orthopedics department is generally folded at the tail of the bed, and under the condition that no family members accompany, the patient needs to prop up the upper body by using waist strength to pull up the small dining table at the tail of the sick bed to contain the food, so that the recovery of the lumbar intervertebral disc of the patient is inconvenient;
therefore, the orthopedic patient bed convenient to adjust and special for the orthopedics department can well solve the problems.
Disclosure of Invention
The invention aims to provide an orthopedic special sickbed convenient for orthopedic patients to adjust, and aims to solve the problems that the angle adjuster of the existing orthopedic special sickbed on the market in the background technology is generally arranged at the bottom in front of the sickbed, and is inconvenient for the patients to adjust the angle by themselves without accompanying of family members, so that the patients have inconvenience in eating and living during treatment, and the waist of the patients is excessively stressed to cause no specific pain when the patients sit and get off the bed, and the existing small dining table for containing food of the orthopedic special sickbed is generally folded at the tail of the sickbed, so that the patients need to prop up the upper half body by using waist strength to pull up the small dining table at the tail of the sickbed to contain food without accompanying of family members, and thus the lumbar disc of the patients is inconvenient to recover.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an orthopedics special sick bed of patient with being convenient for adjust of orthopedics, includes sick bed body, rocker, sprocket and slide, the rear side bearing is connected with the rocker in the middle of the sick bed body top, and rocker below outside key joint has the sprocket to sprocket right side internal key-type connection has the bull stick, the bull stick top is fixed with conical gear, and conical gear the place ahead internal weld has the pivot to the equal bearing in both ends is connected with perpendicular support around the pivot, and erects to support the internal side bearing and be connected with the connecting rod, sprocket left side internal key-type connection has the montant, and is provided with the lead screw above the montant to lead screw outside threaded connection has the slide, slide top left side activity articulates there is the table, and desktop top internal bearing is connected with the connecting axle to the welding of the connecting axle outside has the dead man.
Preferably, the inside spout that has all seted up in sick bed body right side, and the spout is "T" word shape to install control button in the middle of the sick bed body right side top.
Preferably, a pinion is fixed on the outer side of the rotating shaft, and 2 pinions are symmetrically arranged on the right side of the rotating shaft about the vertical center line.
Preferably, the welding of connecting rod outside has the gear wheel, and gear wheel and pinion intermeshing to the connecting rod left side is fixed with the movable rod.
Preferably, the end part of the left side of the movable rod is movably hinged with a sliding block, the sliding block and the sliding groove form a sliding structure, and the sliding block and the sliding groove are in one-to-one correspondence.
Preferably, a first electromagnet is fixed on the outer side of the upper end of the vertical rod, and clamping strips are fixed on the left side and the right side of the top of the first electromagnet.
Preferably, the second electromagnet is fixed on the outer side of the bottom end of the screw rod, the clamping grooves are formed in the left inner side and the right inner side below the second electromagnet, and the clamping grooves and the clamping strips form a clamping structure.
Preferably, a polish rod penetrates through the inside of the sliding plate, the polish rod is parallel to the screw rod, and the polish rod is perpendicular to the bottom of the sickbed body.
Preferably, a torsion spring is arranged on the outer side of the connecting shaft, and a transmission gear is further fixed on the outer side of the connecting shaft.
Preferably, a rack plate is arranged on the inner side of the pull rod, a paper box is welded in front of the rack plate, and the rack plate and the transmission gear are meshed with each other.
Compared with the prior art, the invention has the beneficial effects that: the orthopaedics patient uses the orthopaedics special sickbed which is convenient to adjust;
(1) the adjustable sickbed is provided with a rocker, a chain wheel, a rotating rod, a conical gear, a rotating shaft, a pinion, a vertical support, a connecting rod, a large gear, a movable rod and a slider, so that the rocker can be effectively rotated by a patient through manual rotation of the patient, the chain wheel, the rotating rod, the conical gear and the rotating shaft and the pinion rotate simultaneously, the large gear is effectively driven to rotate through rotation of the pinion, the movable rod and the slider are effectively driven to be matched with a chute below the right side of the sickbed body to swing back and forth in the rotating process of the large gear, and then the right side of the sickbed body is effectively lifted up to be adjusted in angle in the forward and backward swinging process of the movable rod and the slider, the angle of the upper half of the patient with severe lumbar intervertebral disc protrusion can be adjusted by the structure, and diet of the patient can be conveniently kept in hospital;
(2) the dining table is provided with a vertical rod, a first electromagnet, a clamping strip, a screw rod, a second electromagnet, a clamping groove, a sliding plate, a polished rod and a table plate, so that the first electromagnet, the clamping strip, the screw rod and the second electromagnet are effectively driven to rotate simultaneously when the vertical rod rotates, the first electromagnet and the second electromagnet are used as a connecting structure which can be clamped, linked and rotated by the first electromagnet and the second electromagnet when a patient needs to have a meal, the sliding plate and the table plate are effectively driven to be matched with the polished rod to move up and down in the rotating process of the screw rod, the table plate is conveniently turned by 270 degrees to the right side by the patient and matched with the sliding plate to be clamped and fixed, and the structure is convenient for the patient to put and use meal;
(3) be provided with the connecting axle, torsion spring, drive gear, the pull rod, rack plate and carton, make effectual drive connecting axle and drive gear cooperation torsion spring rotatory simultaneously when pulling the rotation to the outside through the pull rod, thereby it removes to the outside to drive rack plate and carton through drive gear rotation, and then it takes out and fills up the paper of carton inside and carry out the enjoyment of meal on the table surface to have been convenient for the patient, above the structure has avoided the patient to drop the problem that is difficult to the clearance behind the table surface with meal when having a dinner, holistic convenience has been increased.
Drawings
FIG. 1 is a schematic view of the main sectional structure of the present invention;
FIG. 2 is a schematic right sectional view of the present invention;
FIG. 3 is a schematic view of the mounting structure of the sliding block and the sliding groove according to the present invention;
FIG. 4 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
FIG. 5 is an enlarged view of the structure at B in FIG. 2 according to the present invention;
FIG. 6 is an enlarged view of the structure of FIG. 3 at C according to the present invention;
FIG. 7 is a schematic view of the mounting structure of the lead screw and the slide plate according to the present invention;
FIG. 8 is an enlarged view of the structure at D in FIG. 7 according to the present invention
Fig. 9 is a schematic view of an installation structure of the rack plate and the transmission gear of the present invention.
In the figure: 1. a sickbed body; 101. a chute; 102. a control button; 2. a rocker; 3. a sprocket; 4. a rotating rod; 5. a bevel gear; 6. a rotating shaft; 601. a pinion gear; 7. vertically supporting; 8. a connecting rod; 801. a bull gear; 802. a movable rod; 803. a slider; 9. a vertical rod; 901. a first electromagnet; 902. clamping the strip; 10. a screw rod; 1001. a second electromagnet; 1002. a card slot; 11. a slide plate; 1101. a polish rod; 12. a table plate; 13. a connecting shaft; 1301. a torsion spring; 1302. a transmission gear; 14. pulling a rod; 1401. a rack plate; 1402. a carton.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-9, the present invention provides a technical solution: a hospital bed special for orthopedics department and convenient to adjust for orthopedic patients comprises a hospital bed body 1, a sliding groove 101, a control button 102, a rocker 2, a chain wheel 3, a rotating rod 4, a conical gear 5, a rotating shaft 6, a pinion 601, a vertical support 7, a connecting rod 8, a large gear 801, a movable rod 802, a sliding block 803, a vertical rod 9, a first electromagnet 901, a clamping strip 902, a screw rod 10, a second electromagnet 1001, a clamping groove 1002, a sliding plate 11, a polish rod 1101, a table board 12, a connecting shaft 13, a torsion spring 1301, a transmission gear 1302, a pulling rod 14, a rack board 1401 and a paper box 1402, wherein the middle rear bearing above the hospital bed body 1 is connected with the rocker 2, the outer side below the rocker 2 is keyed with the chain wheel 3, the rotating rod 4 is keyed on the right side of the chain wheel 3, the conical gear 5 is fixed above the rotating rod 4, the rotating shaft 6 is welded inside the front of the conical gear 5, the front and rear ends of the rotating shaft 6 are both connected with the vertical supports 7, and the inside bearing of the vertical support 7 is connected with a connecting rod 8, the inside key on the left side of the chain wheel 3 is connected with a vertical rod 9, a screw rod 10 is arranged above the vertical rod 9, the outside of the screw rod 10 is in threaded connection with a sliding plate 11, the left side above the sliding plate 11 is movably hinged with a table plate 12, the inside bearing above the table top is connected with a connecting shaft 13, and the outside of the connecting shaft 13 is welded with a pull rod 14.
Spout 101 has all been seted up to 1 right side inside of sick bed body, and spout 101 is "T" word shape to control button 102 is installed to sick bed body 1 middle right side top, the design of above-mentioned structure for opening and closing through control button 102 is effectual all lets in the electric current with first electro-magnet 901 and second electro-magnet 1001, has been convenient for the linkage of later stage structure, has increased holistic convenience.
The pinion 601 is fixed with in the pivot 6 outside, and the pinion 601 is provided with 2 about the vertical central line symmetry on pivot 6 right side, and the design of above-mentioned structure for through the rotatory effectual drive pinion 601 rotation of pivot 6, increased holistic transmission effect.
The welding of the 8 outside of connecting rod has gear wheel 801, and gear wheel 801 and pinion 601 intermeshing to connecting rod 8 left side is fixed with movable rod 802, and the design of above-mentioned structure makes through the rotatory effectual gear wheel 801 and the connecting rod 8 simultaneous rotation of driving of pinion 601, thereby carries out the seesaw through the rotatory effectual movable rod 802 that drives of connecting rod 8, has increased holistic practicality.
The activity of movable rod 802 left side tip articulates there is slider 803, and slider 803 and spout 101 constitute sliding structure, and slider 803 and spout 101 are the one-to-one relation, the design of above-mentioned structure, make through the effectual slider 803 that drives of movable rod 802 swing back and forth the cooperation spout 101 of sick bed body 1 right side below slide back and forth, thereby effectual carrying out angle modulation to sick bed body 1 right side when swing back and forth through movable rod 802 and slider 803, increased holistic convenience.
The first electromagnet 901 is fixed on the outer side of the upper end of the vertical rod 9, the clamping strips 902 are fixed on the left side and the right side of the top of the first electromagnet 901, and due to the structural design, the first electromagnet 901 and the clamping strips 902 are effectively driven to rotate simultaneously through the rotation of the vertical rod 9, so that the overall transmission effect is increased.
The bottom end of the screw rod 10 is fixed with a second electromagnet 1001 on the outer side, a clamping groove 1002 is formed in the left inner side and the right inner side of the lower portion of the second electromagnet 1001, the clamping groove 1002 and the clamping strip 902 form a clamping structure, the second electromagnet 1001 is made to rotate and the screw rod 10 is driven to rotate through the clamping groove 1002 and the clamping strip 902, and overall usability is improved.
Slide 11 is inside to run through there is polished rod 1101, and polished rod 1101 is parallel to each other with lead screw 10, and polished rod 1101 and 1 bottom mutually perpendicular of sick bed body, the design of above-mentioned structure, make through the effectual slide 11 cooperation inboard polished rod 1101 that drives of lead screw 10 rotation process reciprocate, thereby can effectually drive table 12 when reciprocating through slide 11 and reciprocate, and then be convenient for the patient with table 12 turn over to the right side 270 and cooperate the slide 11 upper end to carry out the block fixed, holistic stability has been increased.
The outer side of the connecting shaft 13 is provided with the torsion spring 1301, and the outer side of the connecting shaft 13 is further fixed with the transmission gear 1302, so that the paper box 1402 which is pulled open can be effectively and rapidly reset through the contractibility and resilience of the torsion spring 1301, and the overall convenience is improved.
The rack plate 1401 is arranged on the inner side of the pull rod 14, the paper box 1402 is welded in front of the rack plate 1401, and the rack plate 1401 and the transmission gear 1302 are meshed with each other, and due to the design of the structure, the transmission gear 1302 rotates to effectively drive the rack plate 1401 and the paper box 1402 to move back and forth, so that the paper on the inner side can be taken by a patient and laid on the table 12 through the paper box 1402 in the process of moving back and forth, the patient is prevented from directly dropping meal on the surface of the table 12 when the meal is eaten, and the practicability and convenience of the whole are improved.
The working principle is as follows: when the special orthopedics sickbed convenient for orthopedics patients to adjust is used, firstly, as shown in figures 1-3 and 5-6, when a patient with severe lumbar disc herniation needs to sit up, a rocker 2 above the right side of the sickbed body 1 can be rotated by the right hand to drive a chain wheel 3 to rotate under the condition that no family members accompany and care, a rotating rod 4 and a conical gear 5 are driven to rotate by the rotation of the chain wheel 3, so that the rotating shaft 6 is effectively driven to rotate by the rotation of the conical gear 5, a pinion 601 is driven to rotate by the rotation of the rotating shaft 6, the pinion 601 is meshed with a large gear 801 on the outer side of a connecting rod 8, so that the movable rod 802 is driven to swing back and forth by the rotation of the pinion 601, the sliding block 803 which is effectively driven to be matched with the sliding groove 101 to slide back and forth at the bottom above the sickbed body 1 in the back and forth swinging process of the sliding block 803 is effectively jacked up the right side of the sickbed body 1 to adjust the angle, at the moment, the angle of the sickbed body 1 is adjusted by the patient according to the comfort level of the waist, the structure avoids the problem that the patient cannot stand up under the condition that family members do not accompany, the angle of the patient can be conveniently adjusted according to the pain and comfort condition of the patient, and the problems in the background technology are solved;
in order to facilitate the patient to have meals in the morning, the evening and the evening, as shown in fig. 1-2, 4 and 6-9, before the patient sits up for meals, the table plate 12 on the left side of the sickbed body 1 needs to be flatly placed in front of the body, and the upper half of the patient needs to be straightened, and the specific operation method is as follows, before the angle of the upper half of the patient is adjusted, the control button 102 is manually turned on, so that the first electromagnet 901 and the second electromagnet are electrified, after the first electromagnet 901 and the second electromagnet 1001 are electrified, the first electromagnet 901 and the clamping strip 902 are matched with the vertical rod 9 to rapidly slide upwards and be clamped and fixed with the clamping groove 1002 in the lower part of the second electromagnet 1001, and then through the operation of the steps, the vertical rod 9, the first electromagnet 901 and the second electromagnet 1001 are driven to rotate simultaneously when the chain wheel 3 rotates, therefore, the screw rod 10 is effectively driven to rotate through the rotation of the second electromagnet 1001, the sliding plate 11 is driven to be matched with the polish rod 1101 and the sickbed body 1 to move upwards through the rotation of the screw rod 10, then the table plate 12 is driven to move upwards through the upward movement of the sliding plate 11, when the table plate 12 moves to the upper side, a patient can easily turn over towards the right side through a handle in front of the table plate 12 and is clamped above the sliding plate 11 for limiting, the table plate 12 is adjusted to be in a state of being parallel to the upper side of the sickbed body 1, in order to prevent meal from being scattered on the surface of the table plate 12 in the using process, the patient can manually pull the pull rod 14 to the outer side and drive the connecting shaft 13 to rotate, the connecting shaft 13 rotates to drive the transmission gear 1302 to rotate in cooperation with the torsion spring 1301, and the rack plate 1401 and the paper box 1402 are effectively driven to move and open in the rotating process of the transmission gear 1302, the patient may then take the special paper out of the interior of the paper cassette 1402 and rest on the surface of the table 12, then the food bought in the hospital can be put on the paper for enjoying, the structure not only matches the upper half body with the angle adjustment on the right side of the sickbed body 1 to achieve the sitting effect, but also is convenient for the patient to place and eat the food by moving the table board 12 to the front, meanwhile, the patient is prevented from directly dropping food on the surface of the table plate 12 when having a meal, which is a special hospital bed for orthopedics department convenient for the angle adjustment of the patient under the condition that no family relatives accompany, meanwhile, the problems in the background art are solved, the overall practicability and convenience are improved, and the working principle of the user is realized, to thereby carry out a series of tasks, the contents of which are not described in detail in the present specification are prior art well known to those skilled in the art.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims (6)

1. The utility model provides an orthopedics special sick bed of orthopedics patient with be convenient for adjust, includes sick bed body (1), rocker (2), sprocket (3) and slide (11), its characterized in that: the edge of the sickbed body (1) is connected with a rocker (2) through a bearing, the outer side below the rocker (2) is connected with a chain wheel (3) through a key, and the inner key on the right side of the chain wheel (3) is connected with a rotating rod (4), a conical gear (5) is fixed above the rotating rod (4), a rotating shaft (6) is welded in the front of the other conical gear (5), and both ends of the rotating shaft (6) are connected with vertical supports (7) through bearings, and the inner side of each vertical support (7) is connected with a connecting rod (8) through a bearing, the inner key at the left side of the chain wheel (3) is connected with a vertical rod (9), a screw rod (10) is arranged above the vertical rod (9), a sliding plate (11) is connected with the outer side of the screw rod (10) in a threaded manner, a table plate (12) is movably hinged on the left side above the sliding plate (11), a connecting shaft (13) is connected to an inner bearing above the desktop, and a pull rod (14) is welded to the outer side of the connecting shaft (13);
the inner parts of one ends, far away from the table plate (12), of the sickbed bodies (1) are respectively provided with a sliding groove (101), the sliding grooves (101) are T-shaped, and a control button (102) is arranged above the right side of the middle of each sickbed body (1);
the outer side of the rotating shaft (6) is fixed with small gears (601), and 2 small gears (601) are symmetrically arranged around the vertical central line of the rotating shaft (6);
a large gear (801) is welded on the outer side of the connecting rod (8), the large gear (801) is meshed with the small gear (601), and a movable rod (802) is fixed on the left side of the connecting rod (8);
the left end of the movable rod (802) is movably hinged with a sliding block (803), the sliding block (803) and the sliding groove (101) form a sliding structure, and the sliding block (803) and the sliding groove (101) are in one-to-one correspondence.
2. The adjustable hospital bed special for orthopedics department for orthopedic patients according to claim 1, characterized in that: a first electromagnet (901) is fixed on the outer side of the upper end of the vertical rod (9), and clamping strips (902) are fixed on the left side and the right side of the top of the first electromagnet (901).
3. The adjustable hospital bed special for orthopedics department for orthopedic patients according to claim 2, characterized in that: the lead screw (10) bottom outside is fixed with second electro-magnet (1001), and inboard draw-in groove (1002) have all been seted up about second electro-magnet (1001) below to draw-in groove (1002) and card strip (902) constitute the block structure.
4. The adjustable hospital bed special for orthopedics department for orthopedic patients according to claim 1, characterized in that: the polish rod (1101) penetrates through the inside of the sliding plate (11), the polish rod (1101) is parallel to the lead screw (10), and the polish rod (1101) is perpendicular to the bottom of the sickbed body (1).
5. The adjustable hospital bed special for orthopedics department for orthopedic patients according to claim 1, characterized in that: a torsion spring (1301) is arranged on the outer side of the connecting shaft (13), and a transmission gear (1302) is further fixed on the outer side of the connecting shaft (13).
6. The adjustable hospital bed special for orthopedics department for orthopedic patients according to claim 5, characterized in that: a rack plate (1401) is arranged on the inner side of the pull rod (14), a paper box (1402) is welded in front of the rack plate (1401), and the rack plate (1401) and the transmission gear (1302) are meshed with each other.
CN202110109941.9A 2021-01-27 2021-01-27 Special hospital bed convenient to adjust for orthopedic patients Active CN112754813B (en)

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