CN111067721A - Transmission mechanism and movable sickbed - Google Patents
Transmission mechanism and movable sickbed Download PDFInfo
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- CN111067721A CN111067721A CN201910445212.3A CN201910445212A CN111067721A CN 111067721 A CN111067721 A CN 111067721A CN 201910445212 A CN201910445212 A CN 201910445212A CN 111067721 A CN111067721 A CN 111067721A
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- conveyor belt
- transmission
- shaft
- driving wheel
- belt
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G1/00—Stretchers
- A61G1/02—Stretchers with wheels
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G1/00—Stretchers
- A61G1/01—Sheets specially adapted for use as or with stretchers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G1/00—Stretchers
- A61G1/04—Parts, details or accessories, e.g. head-, foot-, or like rests specially adapted for stretchers
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Nursing (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a transmission mechanism and a movable sickbed, wherein the transmission mechanism comprises a power shaft, a first conveyor belt, a second conveyor belt, a driven shaft and a clutch mechanism, the power shaft drives the first conveyor belt to circularly operate, whether the power shaft drives the second conveyor belt to circularly operate or not can be controlled, the circulating operation direction of the first conveyor belt and the circulating operation direction of the second conveyor belt are opposite in the operation process, a first driving wheel and a second driving wheel are fixedly arranged on the driven shaft, the first driving wheel is meshed with the first conveyor belt, the second driving wheel is meshed with the second conveyor belt, the first clutch mechanism is controlled to enable the power shaft to selectively drive the first driven shaft to rotate or drive the transmission shaft to rotate and move around the axis of the first clutch mechanism, the driven shaft can be driven to do a plurality of actions.
Description
Technical Field
The invention relates to medical equipment, in particular to a transmission mechanism and a movable sickbed.
Background
The existing movable sickbed comprises a fixed bed board, a movable bed board and a driving mechanism. The movable bed board can move relative to the fixed bed board to control the movable bed board to extend out or retract, and the driving mechanism is in transmission connection with the movable bed board to drive the movable bed board to move. The movable bed board is connected with the bed cloth, and a cloth rolling shaft is additionally arranged to be connected with the bed cloth. In the traditional structure, the movement of the movable bed plate and the rotation of the cloth rolling shaft are respectively realized by two sets of driving sources. To the above-mentioned not enough, some have proposed to drive the removal of moving the bed board and the rotation of batching axle through a set of driving source, can connect automatically, send patient's novel operation table as CN1813648A discloses, the last mesa of operation table is located between the operation table frame, bed frame can do left right concertina movement for frame and bearing structure, be equipped with the walking drive who is used for driving bed frame in the operation table, be equipped with the conveyer belt on bed frame and the bearing structure, the both ends of conveyer belt are packed up on the driving roller of its below, be equipped with in the operation table and be used for driving the driving roller and make the conveyer belt along with the flexible roll-up or the roll-up roller drive who moves of bed frame. The CN1813648A driving mechanism is complex in structure, high in cost and high in maintenance difficulty, and the movement of the movable bed board and the rotation of the cloth rolling shaft can affect each other.
Disclosure of Invention
The invention provides a transmission mechanism and a movable sickbed, which overcome the defects of the movable sickbed in the background technology.
One of the technical schemes adopted by the invention for solving the technical problems is as follows:
a transmission mechanism comprises a power shaft, a first conveyor belt, a second conveyor belt, a first driven shaft and a first clutch mechanism, wherein the power shaft, the first conveyor belt, the second conveyor belt, the first driven shaft and the first clutch mechanism can rotate under the driving of a driving mechanism; the power shaft is in transmission connection with the first conveyor belt so as to drive the first conveyor belt to run in a surrounding manner, the power shaft is in transmission connection with the second conveyor belt, the first clutch mechanism is arranged between the power shaft and the second conveyor belt so as to control whether the power shaft drives the second conveyor belt to run in a surrounding manner or not, and the surrounding running direction of the first conveyor belt and the surrounding running direction of the second conveyor belt are opposite when the second conveyor belt is driven to run in a surrounding manner; the first driven shaft is fixedly provided with a first driving wheel and a second driving wheel, the first driving wheel is meshed with the first conveying belt, the second driving wheel is meshed with the second conveying belt, and the first clutch mechanism is controlled to enable the power shaft to at least selectively drive the first driven shaft to rotate or drive the transmission shaft to rotate and move around the axis of the power shaft.
In one embodiment: the annular surfaces of the first conveyor belt and the second conveyor belt are uniformly and uniformly distributed with gear teeth at intervals, and the first driving wheel and the second driving wheel are both gears.
In one embodiment: the gear teeth are arranged on the inner annular surfaces of the first transmission belt and the second transmission belt.
In one embodiment: the first conveyor belt and the second conveyor belt are both chains, and the first driving wheel and the second driving wheel are both chain wheels.
In one embodiment: the transmission mechanism also comprises a first transmission shaft, a third transmission shaft, a second transmission shaft and a fourth transmission shaft; the first transmission belt is connected with the first transmission shaft and the third transmission shaft in a winding mode, and the driving shaft is in transmission connection with the first transmission shaft; the second transmission belt is connected with the second transmission shaft and the fourth transmission shaft in a winding mode, and the driving shaft is connected with the second transmission shaft through the first clutch mechanism in a transmission mode.
In one embodiment: the plane defined by the axis of the first transmission shaft and the axis of the third transmission shaft is a first middle plane, the plane defined by the axis of the second transmission shaft and the axis of the fourth transmission shaft is a second middle plane, and the arrangement of the meshing position of the first transmission teeth and the first transmission belt relative to the first middle plane and the arrangement of the meshing position of the second transmission teeth and the second transmission belt relative to the second middle plane are reversely arranged.
In one embodiment: the first conveyor belt and the second conveyor belt are arranged in parallel.
In one embodiment: the first transmission belt and the second transmission belt are identical in structure, and the first transmission teeth and the second transmission teeth are identical in structure.
In one embodiment: the first conveyor belt and the second conveyor belt are in the same winding speed.
In one embodiment: the driving shaft is arranged on a first object, the first driven shaft is arranged on a second object, the second object and the first object form connection capable of moving relatively, a supporting part is arranged on the second object, and the first driven shaft can be rotatably connected to the supporting part.
In one embodiment: the clutch mechanism is characterized by further comprising a second driven shaft, and a second clutch mechanism is arranged between the first driven shaft and the second transmission shaft.
The second technical scheme adopted by the invention for solving the technical problems is as follows:
a transmission mechanism comprises a power shaft, a first conveyor belt, a second conveyor belt, a first driven shaft and a first clutch mechanism, wherein the power shaft, the first conveyor belt, the second conveyor belt, the first driven shaft and the first clutch mechanism can rotate under the driving of a driving mechanism; the power shaft is in transmission connection with the first conveyor belt so as to drive the first conveyor belt to run in a surrounding manner, the power shaft is in transmission connection with the second conveyor belt, and the first clutch mechanism is arranged between the power shaft and the second conveyor belt so as to control whether the power shaft drives the second conveyor belt to run in a surrounding manner; a first driving wheel and a second driving wheel are fixedly arranged on the first driven shaft, the first driving wheel is meshed with the first conveying belt, and the second driving wheel is meshed with the second conveying belt; the first conveyor belt, the second conveyor belt, the first driving wheel, the second driving wheel and the first driven shaft are matched to form a driving unit with the same principle as the planetary wheel mechanism.
The third technical scheme adopted by the invention for solving the technical problems is as follows:
a transmission mechanism comprises a power shaft, a first conveyor belt, a second conveyor belt, a first driven shaft and a first clutch mechanism, wherein the power shaft, the first conveyor belt, the second conveyor belt, the first driven shaft and the first clutch mechanism can rotate under the driving of a driving mechanism; the power shaft is in transmission connection with the first conveyor belt so as to drive the first conveyor belt to run in a surrounding manner, the power shaft is in transmission connection with the second conveyor belt, the first clutch mechanism is arranged between the power shaft and the second conveyor belt so as to control whether the power shaft drives the second conveyor belt to run in a surrounding manner or not, and the surrounding running direction of the first conveyor belt and the surrounding running direction of the second conveyor belt are opposite when the second conveyor belt is driven to run in a surrounding manner; a first driving wheel and a second driving wheel are fixedly arranged on the first driven shaft, the first driving wheel is meshed with the first conveying belt, and the second driving wheel is meshed with the second conveying belt; the first conveyor belt, the second conveyor belt, the first driving wheel, the second driving wheel and the first driven shaft are matched to form a driving unit with the same principle as the planetary wheel mechanism.
The fourth technical scheme adopted by the invention for solving the technical problems is as follows:
a transmission mechanism comprises a power shaft, a first conveyor belt, a second conveyor belt, a first driven shaft and a first clutch mechanism, wherein the power shaft, the first conveyor belt, the second conveyor belt, the first driven shaft and the first clutch mechanism can rotate under the driving of a driving mechanism; the power shaft is in transmission connection with the first conveyor belt so as to drive the first conveyor belt to run in a surrounding manner, the power shaft is in transmission connection with the second conveyor belt, the first clutch mechanism is arranged between the power shaft and the second conveyor belt so as to control whether the power shaft drives the second conveyor belt to run in a surrounding manner or not, and the surrounding running direction of the first conveyor belt and the surrounding running direction of the second conveyor belt are opposite when the second conveyor belt is driven to run in a surrounding manner; a first driving wheel and a second driving wheel are fixedly arranged on the first driven shaft, the first driving wheel is meshed with the first conveying belt, and the second driving wheel is meshed with the second conveying belt; the first conveyor belt and the second conveyor belt are provided with a forward part and a reverse part which are circularly operated at preset positions to form linear motion; the meshing position of the first driving wheel and the first conveyor belt and the meshing position of the second driving wheel and the second conveyor belt are both positioned in a forward part or a reverse part.
The fifth technical scheme adopted by the invention for solving the technical problems is as follows:
the movable sickbed comprises the transmission mechanism, the first object comprises a fixed bed board, and the second object comprises a movable bed board.
In one embodiment: still include the second driven shaft, be equipped with second clutching mechanism between first driven shaft and the second transmission shaft, the second transmission shaft constitutes the batching axle, remove the outer coiling of bed board and connect the bed cloth, the batching hub connection bed cloth is in order to drive the bed cloth along removing the bed board activity.
In one embodiment: two rows of transmission rods are arranged under the movable bed plate and are arranged up and down in a staggered mode, the highest position of the lower row of transmission rollers is higher than the lowest position of the upper row of transmission rollers, and the part, located below the movable bed plate, of the bed cloth is connected between the two rows of transmission rollers.
Compared with the background technology, the technical scheme has the following advantages:
the transmission mechanism comprises a power shaft, a first conveyor belt, a second conveyor belt, a driven shaft and a clutch mechanism, the power shaft drives the first conveyor belt to run in a surrounding mode, whether the power shaft drives the second conveyor belt to run in a surrounding mode or not can be controlled, the running direction of the first conveyor belt in the surrounding mode and the running direction of the second conveyor belt in the surrounding mode are opposite, a first transmission wheel and a second transmission wheel are fixedly arranged on the driven shaft, the first transmission wheel is meshed with the first conveyor belt, the second transmission wheel is meshed with the second conveyor belt, the first clutch mechanism is controlled to enable the power shaft to selectively drive the first driven shaft to rotate or drive the transmission shaft to move while rotating around the axis of the first clutch mechanism, the driven shaft can be driven to do.
The annular surfaces of the first conveyor belt and the second conveyor belt are uniformly and uniformly distributed with gear teeth at intervals, and the first driving wheel and the second driving wheel are both gears, so that the structure is simple, and the transmission is stable and reliable. The gear teeth are arranged on the inner annular surfaces of the first transmission belt and the second transmission belt, and the structure is compact.
The first conveyor belt and the second conveyor belt are both chains, and the first driving wheel and the second driving wheel are both chain wheels, so that the structure is simple and compact, and the transmission is stable and reliable.
The second clutch mechanism is arranged between the first driven shaft and the second transmission shaft, and the second transmission shaft forms a cloth rolling shaft to combine the movement of the movable bed plate and the movement of bed cloth.
Drawings
The invention is further described with reference to the following figures and detailed description.
FIG. 1 is one of the schematic perspective views of an embodiment of a transmission.
Fig. 2 is a second perspective view of the transmission mechanism according to the second embodiment.
Fig. 3 is a third perspective view of the transmission mechanism according to the embodiment.
FIG. 4 is a partial perspective view of an embodiment of a transmission.
FIG. 5 is a second partial perspective view of the transmission mechanism according to the second embodiment.
Fig. 6 is a schematic view of a connection structure of the movable bed board and the bed cloth according to the embodiment.
Detailed Description
Referring to fig. 1 to 6, the movable bed board includes a base, a lifting column, a first object 10, a second object 20, a transmission mechanism 40 and a driving mechanism 30, wherein a traveling wheel is disposed under the base, the lifting column is mounted on the base, and the first object 10 is mounted on the lifting column. The first object 10 comprises a bed frame 11 and a fixed bed board fixedly arranged on the bed frame 11, the second object 20 comprises a movable bed board 21, the movable bed board 21 can move and extend out or recover relative to the first object 10, bed cloth 22 is sleeved on the movable bed board 21, a cloth rolling shaft 23 is arranged on the movable bed board 21, and the cloth rolling shaft 23 is connected with the bed cloth 22 so as to drive the bed cloth 22 to move around the movable bed board 21 through self rotation. The driving mechanism 30 is in transmission connection with the movable bed plate 21 through a transmission mechanism 40 so as to at least drive the movable bed plate 21 to move, extend or retract.
The transmission mechanism 40 includes a power shaft 41, a first transmission belt 42, a second transmission belt 43, a first driven shaft 44, a first clutch mechanism 45 and a second clutch mechanism 46.
The driving mechanism 30 is in transmission connection with the power shaft 41 so as to drive the power shaft 41 to rotate, and in the specific structure: the driving mechanism 30 is a motor and is mounted on the bed frame 11 of the first object 10, the motor is in transmission connection with the power shaft 41 through a first gear set 31, the first gear set 31 comprises a first gear fixedly connected with the output shaft of the motor and a second gear fixedly connected with the power shaft 41, and the first gear and the second gear are meshed. The power shaft 41 can be rotatably connected to the bed frame 11, and the axis of the power shaft 41 is perpendicular to the moving track of the movable bed plate 21.
The power shaft 41 is in transmission connection with the first conveyor belt 42 so as to drive the first conveyor belt 42 to run around. In the concrete structure: the transmission mechanism 40 further comprises a first transmission shaft 421 and a third transmission shaft 422, the first transmission shaft 421 and the third transmission shaft 422 are rotatably connected to the bed frame 11, the axes of the first transmission shaft 421, the third transmission shaft 422 and the power shaft 41 are parallel, and the first transmission shaft 421 and the third transmission shaft 422 are arranged at intervals along the moving track of the movable bed plate; the first conveyor belt 42 is connected to the first transmission shaft 421 and the third transmission shaft 422 in a surrounding manner, the driving shaft 41 is connected to the first transmission shaft 421 in a transmission manner so as to drive the first transmission shaft 421 to rotate, and the first transmission shaft 421 drives the first conveyor belt 42 to operate in a surrounding manner. Further, the driving shaft 41 is drivingly connected to the first transmission shaft 421 through a second gear set, which includes a third gear 423 fixed to the driving shaft 41 and a fourth gear 424 fixed to the first transmission shaft 421, and the third gear and the fourth gear are engaged.
The power shaft 41 is in transmission connection with the second conveyor belt 43, and the first clutch mechanism 45 is arranged between the power shaft 41 and the second conveyor belt 43 to control whether the power shaft 41 drives the second conveyor belt 43 to run around, and when the second conveyor belt 43 is driven to run around, the running direction of the first conveyor belt 42 is opposite to that of the second conveyor belt 43. The first conveyor belt and the second conveyor belt are arranged in parallel, and the first conveyor belt and the second conveyor belt have a height difference. In the concrete structure: the transmission mechanism 40 further comprises a second transmission shaft 431 and a fourth transmission shaft 442, the second transmission shaft 431 and the fourth transmission shaft 432 are both rotatably connected to the bed frame 11, the axes of the second transmission shaft 431, the fourth transmission shaft 432 and the power shaft 41 are parallel, and the second transmission shaft 431 and the fourth transmission shaft 432 are arranged at intervals along the moving track of the moving bed plate; the second conveyor belt 43 is wound around the second transmission shaft 431 and the fourth transmission shaft 442; the driving shaft 41 is in transmission connection with a second transmission shaft 431 through a third gear set and a first clutch mechanism 45, the third gear set comprises a fifth gear 433 fixedly connected with the driving shaft 41, an intermediate gear 435 rotationally connected with the bedstead 12 and a sixth gear 434 rotationally connected with the bedstead 12, the fifth gear 433 is meshed with the intermediate gear 435, and the intermediate gear 435 is meshed with the sixth gear 434; the first clutch mechanism 45 is connected between the sixth gear 434 and the second transmission shaft 431, and if the first clutch mechanism 45 is an electromagnetic clutch, other clutches can be adopted according to the requirement; the rotation directions of the first rotating shaft 421 and the second rotating shaft 431 are just opposite by adding an intermediate gear, and the circulating running directions of the first conveying belt 42 and the second conveying belt 43 are just opposite; the second gear set and the third gear set are arranged to make the winding speed of the first transmission belt 42 and the winding speed of the second transmission belt 43 the same.
The first driven shaft 44 is rotatably attached to the second object 20, for example, a supporting portion 211 is fixedly provided on the movable bed plate 21 of the second object 20, and the first driven shaft 44 is rotatably connected to the supporting portion 211. The first driven shaft 44 penetrates through the first conveyor belt 42 and the second conveyor belt 43, a first driving wheel 441 and a second driving wheel 442 are fixedly arranged on the first driven shaft 44, the first driving wheel 441 is meshed with the first conveyor belt 42, and the second driving wheel 442 is meshed with the second conveyor belt 43. In the concrete structure: the first conveyor belt 42 and the second conveyor belt 43 both have inner annular surfaces, the inner annular surfaces are uniformly and uniformly distributed with gear teeth 47 at intervals, so that the first conveyor belt and the second conveyor belt form a toothed belt capable of running in a surrounding manner, the first driving wheel 441 and the second driving wheel 442 are both gears, and the first driving wheel 441 and the second driving wheel 442 are respectively meshed with the toothed belt of the first conveyor belt and the toothed belt of the second conveyor belt; moreover, the first transmission shaft, the second transmission shaft, the third transmission shaft and the fourth transmission shaft are all set to be gears so as to be meshed with the toothed belt; the specific structure is exemplified by a toothed belt and a gear, but the structure is not limited to this, and other structures such as a sprocket and a chain structure can be adopted according to the needs.
In this embodiment: the first transmission belt 42 and the second transmission belt 43 are identical in structure, and the first transmission teeth 441 and the second transmission teeth 442 are identical in structure; the plane defined by the axis of the first transmission shaft and the axis of the third transmission shaft is a first middle plane, the plane defined by the axis of the second transmission shaft and the axis of the fourth transmission shaft is a second middle plane, and the arrangement of the meshing position of the first transmission teeth and the first transmission belt relative to the first middle plane and the arrangement of the meshing position of the second transmission teeth and the second transmission belt relative to the second middle plane are reversely arranged. In the concrete structure: as shown in fig. 1, the engagement position of first driving tooth 441 and first conveyor belt 42 is below a first middle plane, i.e., engages the inner bottom surface of first conveyor belt 42; the engagement position of the first driving teeth 441 and the first belt 42 is above the second intermediate plane, i.e., the top plane inside the second belt 43.
The cloth rolling shaft 23 can be rotatably connected to a second supporting part 212 fixed on the movable bed board 21, and the cloth rolling shaft 23 is parallel to the first driven shaft 44; connect second clutching mechanism 46 and fourth gear train in order to control whether to drive cloth beam 23 and rotate between cloth beam 23 and first driven shaft 44, its concrete structure is: the fourth gear set comprises a seventh gear 231 which can be rotatably sleeved on the first driven shaft 44 and an eighth gear 232 which is fixedly arranged on the cloth rolling shaft 23, the seventh gear is meshed with the eighth gear, and the second clutch mechanism 46 is connected with the seventh gear and the first driven shaft so as to control whether the seventh gear is driven to rotate when the first driven shaft rotates, and drive the eighth gear to rotate and drive the cloth rolling shaft to rotate; the second clutch mechanism 46 is, for example, an electromagnetic clutch.
In the transmission mechanism of this embodiment, the first conveyor belt 42, the second conveyor belt 43, the first driving wheel 441, the second driving wheel 442, and the first driven shaft 44 cooperate to form a transmission unit having the same principle as the planetary gear mechanism, and the first clutch mechanism 45 is controlled to enable the power shaft 41 to selectively drive the first driven shaft 44 to rotate or drive the driving shaft 44 to rotate and move around its axis, specifically:
1. the driving mechanism 30 drives the power shaft 41 to rotate, the first clutch mechanism 45 is in a closing state, the power shaft 41 drives the first transmission shaft 421 to rotate around a first direction, the first transmission shaft 421 drives the first conveyor belt 42 to rotate around the first direction, the power shaft 41 drives the second transmission shaft 431 to rotate around a second direction (the first direction is opposite to the second direction), and the second transmission shaft 431 drives the second conveyor belt 43 to rotate around the second direction; the first transmission belt 42 is matched with the first transmission teeth 441, the second transmission belt 43 is matched with the second transmission teeth 442, and under the double matching action, the first transmission shaft 44 rotates and does not move in the first direction around the axis thereof; controlling whether the second clutch mechanism is in an engaged state or a disengaged state; a. when the bed cloth is in the meshed state, the cloth rolling shaft is driven to rotate, and the bed cloth is driven to move relative to the bed board; b. in the disengaged state, the cloth beam is stationary.
2. The driving mechanism 30 drives the power shaft 41 to rotate, the first clutch mechanism 45 is in a disengaged state, the power shaft 41 drives the first transmission shaft 421 to rotate around the first direction, the first transmission shaft 421 drives the first conveyor belt 42 to run around the first direction, and the second transmission shaft 431 and the second conveyor belt 43 are not moved; the first transmission belt 42 is matched with the first transmission teeth 441, the second transmission belt 43 is matched with the second transmission teeth 442, and under the double matching action, the first transmission shaft 44 rotates around the axis thereof in the first direction and moves along the moving track of the moving bed plate 21. Controlling whether the second clutch mechanism is in an engaged state or a disengaged state; a. when the movable bed plate is in the meshing state, the movable bed plate moves and the cloth rolling shaft rotates to drive the bed cloth to move relative to the movable bed plate; b. when the movable bed plate is in a disconnecting state, the movable bed plate moves and the cloth rolling shaft is not moved.
Two rows of transmission rods 24 are arranged below the movable bed plate 21, the two rows of transmission rods 24 are arranged up and down in a staggered mode, the highest position of the lower row of transmission rollers 24 is higher than the lowest position of the upper row of transmission rods 24, the bed cloth 22 is sleeved on the movable bed plate 21, the part (lower layer) of the bed cloth below the movable bed plate is connected between the two rows of transmission rollers, and the cloth rolling shaft abuts against the bed cloth. The part (upper layer) of the bed cloth 22 above the movable bed board 21 contacts with the patient, the part below the movable bed board 21 bypasses the upper surface of the lower transmission stick 24, the transmission stick contacts with the bed sheet of the sickbed in the process of receiving and sending people, the cloth rolling shaft contacts with the bed sheet firstly, the transmission stick rotates due to friction generated by the contact of the movable bed board and the bed sheet by the lower transmission stick at the back, the previous sliding friction is converted into rolling friction, and meanwhile, the bed sheet is prevented from being rolled up.
In this embodiment, the above-mentioned transmission mechanism is adopted, so that one driving source (for example, 1 motor) can control the rotation of the cloth rolling shaft (cloth rolling motion) and the movement of the movable bed plate (bed plate stretching motion), the cloth rolling motion and the bed plate stretching motion are separated, and the two motions do not affect each other. Furthermore, two sets of clutch mechanisms are matched, so that the movement of the movable bed plate and the cloth rolling of the cloth rolling shaft are orderly combined and separated from each other.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents.
Claims (17)
1. The utility model provides a transmission mechanism, includes can pivoted power axle under actuating mechanism drives, its characterized in that: the automatic feeding device also comprises a first conveyor belt, a second conveyor belt, a first driven shaft and a first clutch mechanism; the power shaft is in transmission connection with the first conveyor belt so as to drive the first conveyor belt to run in a surrounding manner, the power shaft is in transmission connection with the second conveyor belt, the first clutch mechanism is arranged between the power shaft and the second conveyor belt so as to control whether the power shaft drives the second conveyor belt to run in a surrounding manner or not, and the surrounding running direction of the first conveyor belt and the surrounding running direction of the second conveyor belt are opposite when the second conveyor belt is driven to run in a surrounding manner; the first driven shaft is fixedly provided with a first driving wheel and a second driving wheel, the first driving wheel is meshed with the first conveying belt, the second driving wheel is meshed with the second conveying belt, and the first clutch mechanism is controlled to enable the power shaft to at least selectively drive the first driven shaft to rotate or drive the transmission shaft to rotate and move around the axis of the power shaft.
2. A transmission mechanism as claimed in claim 1, wherein: the annular surfaces of the first conveyor belt and the second conveyor belt are uniformly and uniformly distributed with gear teeth at intervals, and the first driving wheel and the second driving wheel are both gears.
3. A transmission mechanism as claimed in claim 2, wherein: the gear teeth are arranged on the inner annular surfaces of the first transmission belt and the second transmission belt.
4. A transmission mechanism as claimed in claim 1, wherein: the first conveyor belt and the second conveyor belt are chains, and the first driving wheel and the second driving wheel are chain wheels.
5. A transmission mechanism as claimed in claim 1, wherein: the transmission mechanism also comprises a first transmission shaft, a third transmission shaft, a second transmission shaft and a fourth transmission shaft; the first transmission belt is connected with the first transmission shaft and the third transmission shaft in a winding mode, and the driving shaft is in transmission connection with the first transmission shaft; the second transmission belt is connected with the second transmission shaft and the fourth transmission shaft in a winding mode, and the driving shaft is connected with the second transmission shaft through the first clutch mechanism in a transmission mode.
6. A transmission according to claim 5, wherein: the plane defined by the axis of the first transmission shaft and the axis of the third transmission shaft is a first middle plane, the plane defined by the axis of the second transmission shaft and the axis of the fourth transmission shaft is a second middle plane, and the arrangement of the meshing position of the first transmission teeth and the first transmission belt relative to the first middle plane and the arrangement of the meshing position of the second transmission teeth and the second transmission belt relative to the second middle plane are reversely arranged.
7. A transmission mechanism as claimed in claim 1, wherein: the first conveyor belt and the second conveyor belt are arranged in parallel.
8. A transmission mechanism as claimed in claim 1, wherein: the first transmission belt and the second transmission belt are identical in structure, and the first transmission teeth and the second transmission teeth are identical in structure.
9. A transmission mechanism as claimed in claim 1, wherein: the first conveyor belt and the second conveyor belt are in the same winding speed.
10. A transmission mechanism as claimed in any one of claims 1 to 9, wherein: the driving shaft is arranged on a first object, the first driven shaft is arranged on a second object, the second object and the first object form connection capable of moving relatively, a supporting part is arranged on the second object, and the first driven shaft can be rotatably connected to the supporting part.
11. A transmission mechanism as claimed in any one of claims 1 to 9, wherein: the clutch mechanism is characterized by further comprising a second driven shaft, and a second clutch mechanism is arranged between the first driven shaft and the second transmission shaft.
12. The utility model provides a transmission mechanism, includes can pivoted power axle under actuating mechanism drives, its characterized in that: the automatic feeding device also comprises a first conveyor belt, a second conveyor belt, a first driven shaft and a first clutch mechanism; the power shaft is in transmission connection with the first conveyor belt so as to drive the first conveyor belt to run in a surrounding manner, the power shaft is in transmission connection with the second conveyor belt, and the first clutch mechanism is arranged between the power shaft and the second conveyor belt so as to control whether the power shaft drives the second conveyor belt to run in a surrounding manner; a first driving wheel and a second driving wheel are fixedly arranged on the first driven shaft, the first driving wheel is meshed with the first conveying belt, and the second driving wheel is meshed with the second conveying belt; the first conveyor belt, the second conveyor belt, the first driving wheel, the second driving wheel and the first driven shaft are matched to form a driving unit with the same principle as the planetary wheel mechanism.
13. The utility model provides a transmission mechanism, includes can pivoted power axle under actuating mechanism drives, its characterized in that: the automatic feeding device also comprises a first conveyor belt, a second conveyor belt, a first driven shaft and a first clutch mechanism; the power shaft is in transmission connection with the first conveyor belt so as to drive the first conveyor belt to run in a surrounding manner, the power shaft is in transmission connection with the second conveyor belt, the first clutch mechanism is arranged between the power shaft and the second conveyor belt so as to control whether the power shaft drives the second conveyor belt to run in a surrounding manner or not, and the surrounding running direction of the first conveyor belt and the surrounding running direction of the second conveyor belt are opposite when the second conveyor belt is driven to run in a surrounding manner; a first driving wheel and a second driving wheel are fixedly arranged on the first driven shaft, the first driving wheel is meshed with the first conveying belt, and the second driving wheel is meshed with the second conveying belt; the first conveyor belt, the second conveyor belt, the first driving wheel, the second driving wheel and the first driven shaft are matched to form a driving unit with the same principle as the planetary wheel mechanism.
14. The utility model provides a transmission mechanism, includes can pivoted power axle under actuating mechanism drives, its characterized in that: the automatic feeding device also comprises a first conveyor belt, a second conveyor belt, a first driven shaft and a first clutch mechanism; the power shaft is in transmission connection with the first conveyor belt so as to drive the first conveyor belt to run in a surrounding manner, the power shaft is in transmission connection with the second conveyor belt, the first clutch mechanism is arranged between the power shaft and the second conveyor belt so as to control whether the power shaft drives the second conveyor belt to run in a surrounding manner or not, and the surrounding running direction of the first conveyor belt and the surrounding running direction of the second conveyor belt are opposite when the second conveyor belt is driven to run in a surrounding manner; a first driving wheel and a second driving wheel are fixedly arranged on the first driven shaft, the first driving wheel is meshed with the first conveying belt, and the second driving wheel is meshed with the second conveying belt; the first conveyor belt and the second conveyor belt are provided with a forward part and a reverse part which are circularly operated at preset positions to form linear motion; the meshing position of the first driving wheel and the first conveyor belt and the meshing position of the second driving wheel and the second conveyor belt are both positioned in a forward part or a reverse part.
15. A mobile hospital bed comprising the drive mechanism of claim 10, wherein: the first object comprises a fixed bed board, and the second object comprises a movable bed board.
16. The mobile hospital bed according to claim 15, wherein: still include the second driven shaft, be equipped with second clutching mechanism between first driven shaft and the second transmission shaft, the second transmission shaft constitutes the batching axle, remove the outer coiling of bed board and connect the bed cloth, the batching hub connection bed cloth is in order to drive the bed cloth along removing the bed board activity.
17. The mobile hospital bed according to claim 15, wherein: two rows of transmission rods are arranged under the movable bed plate and are arranged up and down in a staggered mode, the highest position of the lower row of transmission rollers is higher than the lowest position of the upper row of transmission rollers, and the part, located below the movable bed plate, of the bed cloth is connected between the two rows of transmission rollers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910445212.3A CN111067721B (en) | 2019-05-27 | 2019-05-27 | Transmission mechanism and movable sickbed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910445212.3A CN111067721B (en) | 2019-05-27 | 2019-05-27 | Transmission mechanism and movable sickbed |
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| CN111067721A true CN111067721A (en) | 2020-04-28 |
| CN111067721B CN111067721B (en) | 2022-08-23 |
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| CN201910445212.3A Active CN111067721B (en) | 2019-05-27 | 2019-05-27 | Transmission mechanism and movable sickbed |
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Cited By (1)
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|---|---|---|---|---|
| CN113982193A (en) * | 2021-10-29 | 2022-01-28 | 衡阳市新德力交通材料有限公司 | Recoverable ground tackle |
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