CN112773383A

CN112773383A - Walking device of mobile medical equipment and mobile X-ray photographing equipment

Info

Publication number: CN112773383A
Application number: CN201911067840.9A
Authority: CN
Inventors: 王元; 周华
Original assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Current assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2021-05-11

Abstract

A walking device of mobile medical equipment and mobile X-ray shooting equipment are provided, wherein the walking device comprises a first speed reduction transmission mechanism and a second speed reduction transmission mechanism, and the speed reduction ratio of the second speed reduction transmission mechanism is larger than that of the first speed reduction transmission mechanism. The shift position changing mechanism has a first shift position and a second shift position. In a first gear, the driving mechanism is connected with a wheel shaft of the traveling wheel assembly through a first speed reduction transmission mechanism to drive the traveling wheel to rotate at a first speed; and in the second gear, the driving mechanism is connected with the wheel shaft of the traveling wheel assembly through a second speed reduction transmission mechanism to drive the traveling wheel to rotate at a second speed. The output torque of the second reduction transmission mechanism is greater at the second speed, so that the first gear can be switched when the device moves on a level ground; when the device needs to go uphill, it can be shifted to the second gear. The two gears can be flexibly switched according to application scenes, and two requirements of conventional horizontal ground use and uphill can be met by adopting a small motor.

Description

Walking device of mobile medical equipment and mobile X-ray photographing equipment

Technical Field

The application relates to the field of medical equipment, in particular to a walking structure of mobile medical equipment.

Background

Generally, ambulatory medical devices (e.g., ambulatory radiography (mobile DR), ambulatory ultrasound, etc.) require movement between different locations, and are therefore equipped with wheels (or wheels, casters, etc.). Since this type of apparatus, especially mobile radiography apparatus, is heavy, it is difficult to climb slopes or cross steps. Therefore, existing ambulatory medical devices are typically designed with a motor drive system to assist the physician in pushing the device. Taking the mobile X-ray photographing device as an example, most of the road surface is flat ground during the pushing process, and occasionally climbs a slope, if a large climbing angle (more than 7 degrees) is required, the motor load of the mobile X-ray photographing device is large, which is about ten times of the load when the horizontal ground is used conventionally.

If in order to meet the occasional climbing requirement of a customer, a motor with output torque far larger than the torque required under a common use working condition (normal horizontal ground) is selected, on one hand, the product cost is increased, and waste is caused, on the other hand, when the motor is used on the normal horizontal ground, the required output torque is far smaller than the rated torque of the motor (the motor is highest in efficiency when the motor is in a rated torque state), the efficiency of the motor is also low, and the power consumption is increased. Particularly, the power of the mobile X-ray photographic equipment is supplied by a battery, and the endurance time of the battery is also shortened by selecting a motor with output torque far larger than the torque required under the common use working condition.

If only the driving requirement under the conventional horizontal ground is considered and the motor with smaller output torque is selected, the pushing of the machine is very labourious when a large slope is met, the pushing can be completed by a plurality of persons, and the customer experience is poor.

Disclosure of Invention

The application provides a novel walking device of mobile medical equipment and mobile X-ray photographic equipment adopting the walking device, so as to meet different walking requirements.

In one embodiment, the present application provides a walking device of an ambulatory medical device, comprising:

the walking wheel assembly comprises a walking wheel and a wheel shaft, and the walking wheel is arranged on the corresponding wheel shaft;

the driving mechanism is used for providing power to drive the travelling wheels to rotate;

the speed reduction transmission mechanism comprises a first speed reduction transmission mechanism and a second speed reduction transmission mechanism, and the speed reduction ratio of the second speed reduction transmission mechanism is greater than that of the first speed reduction transmission mechanism;

the gear switching mechanism is provided with a first gear and a second gear, and the driving mechanism is connected with a wheel shaft of the traveling wheel assembly through a first speed reduction transmission mechanism at the first gear and drives the traveling wheel to rotate at a first speed; in the second gear, the driving mechanism is connected with the wheel shaft of the traveling wheel assembly through a second speed reduction transmission mechanism to drive the traveling wheel to rotate at a second speed, and the first speed is higher than the second speed.

In one embodiment, the shift position mechanism is controlled by an electrical signal and/or a force signal to shift between the first gear and the second gear.

In one embodiment, the first speed reduction transmission mechanism and the second speed reduction transmission mechanism are both connected with the output end of the driving mechanism, and the gear switching mechanism is in transmission connection with the wheel shaft of the walking wheel assembly and can be switched between the first speed reduction transmission mechanism and the second speed reduction transmission mechanism; in the first gear position, the gear switching mechanism is connected with a first reduction transmission mechanism so as to transmit motion; in the second gear position, the gear switching mechanism is connected with a second reduction transmission mechanism to transmit motion.

In one embodiment, the shift position changing mechanism includes a movably disposed input gear in driving communication with an axle of the road wheel assembly; in the first gear, the input gear is meshed with a first reduction transmission mechanism; in the second gear, the input gear is engaged with a second reduction transmission mechanism.

In one embodiment, the input gear is located between the first reduction transmission mechanism and the second reduction transmission mechanism, and a side of the input gear facing the first reduction transmission mechanism is provided with first meshing gear teeth for meshing with the first reduction transmission mechanism, and a side of the input gear facing the second reduction transmission mechanism is provided with second meshing gear teeth for meshing with the second reduction transmission mechanism.

In one embodiment, the shift position mechanism further includes a shift assembly rotatably coupled to the input gear for driving the input gear between the first gear and the second gear.

In one embodiment, the shift assembly comprises a shift link rotatably connected to the input gear and a shift control assembly for controlling the movement of the shift link, the shift control assembly being connected to the shift link for driving the movement of the corresponding shift link, the shift control assembly having a manual shift assembly and/or an electric shift assembly.

In one embodiment, the walking wheel assemblies comprise at least two walking wheel assemblies, each group of walking wheel assemblies is correspondingly provided with a driving mechanism, a speed reduction transmission mechanism and an input gear, and the input gears corresponding to the at least two walking wheel assemblies are connected with the same gear-shifting control assembly through corresponding gear-shifting connecting pieces.

In one embodiment, the shift connection member includes a second connection rod and a first connection rod, the first connection rod is connected with the corresponding input gear, one end of the second connection rod is hinged to the first connection rod, and the other ends of at least two second connection rods are hinged to the same shift control assembly, so that the shift control assembly controls more than two shift connection members simultaneously.

In one embodiment, the first reduction transmission mechanism and the second reduction transmission mechanism are both connected with the wheel shaft of the walking wheel assembly, and in the first gear position, the gear switching mechanism enables the first reduction transmission mechanism to be connected with the output end of the driving mechanism so as to transmit motion; in the second gear position, the gear switching mechanism connects the second reduction transmission mechanism to the output of the drive mechanism for motion transmission.

In one embodiment, the shift-position switching mechanism has a third gear position at which the drive mechanism is disengaged from both the first reduction drive mechanism and the second reduction drive mechanism.

In one embodiment, the first reduction transmission mechanism and the second reduction transmission mechanism both adopt reduction gear sets; the driving mechanism adopts a motor.

An embodiment of the application provides a mobile X-ray photographic equipment, including fuselage and the running gear as in any one above, the running gear is installed on the fuselage.

According to the running gear of above-mentioned embodiment, it includes first speed reduction drive mechanism and second speed reduction drive mechanism, and the reduction ratio of second speed reduction drive mechanism is greater than the reduction ratio of first speed reduction drive mechanism. And the shift position changing mechanism has a first shift position and a second shift position. In a first gear, the driving mechanism is connected with a wheel shaft of the traveling wheel assembly through a first speed reduction transmission mechanism to drive the traveling wheel to rotate at a first speed; and in the second gear, the driving mechanism is connected with the wheel shaft of the traveling wheel assembly through a second speed reduction transmission mechanism to drive the traveling wheel to rotate at a second speed. The first speed is greater than the second speed, and the output torque of the second reduction transmission mechanism is greater at the second speed, so that the first gear can be switched when the equipment moves on a level ground; when the device needs to go uphill, it can be shifted to the second gear. The two gears can be flexibly switched according to application scenes, two requirements of conventional horizontal ground use and uphill slope can be met by adopting a small motor, user experience is improved, and meanwhile equipment cost can also be reduced.

Drawings

FIG. 1 is a schematic diagram of an ambulatory medical device in one embodiment of the present application;

FIG. 2 is a schematic structural diagram of the traveling device in a third gear (neutral) according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of an embodiment of the present disclosure when the traveling device is in the first gear;

FIG. 4 is a schematic structural diagram of an embodiment of the present disclosure when the traveling device is in the second gear;

fig. 5 is a schematic structural diagram illustrating two sets of traveling wheel assemblies disposed opposite to each other according to an embodiment of the present disclosure.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).

The present embodiments provide a walking device for an ambulatory medical device such that the ambulatory medical device is capable of locomotion. Ambulatory medical devices include, but are not limited to, ambulatory radiography devices (abbreviated as ambulatory DR), ambulatory ultrasound devices. Referring to fig. 1, the mobile X-ray photographing apparatus 1000 is taken as an example for describing the present embodiment, so as to clearly show the walking device shown in the present embodiment. The mobile X-ray photographing apparatus 1000 includes a body 200 and a traveling device 100 mounted on the body 200. The walking device 100 is generally installed at the bottom of the body 200 or other positions, and it can assist the movement of the equipment under the external force of the user, or the movement of the equipment is automatically performed by the walking device 100 without depending on the external force applied by the user.

Referring to fig. 2 to 4, the walking device 100 includes a walking wheel assembly 110, a driving mechanism 120, a reduction transmission mechanism 130 and a shift switching mechanism 140.

The road wheel assembly 110 includes road wheels 111 and axles 112, and the road wheels 111 are mounted on the corresponding axles 112. The road wheels 111 and axles 112 are rotatably mounted on the body 200 of the device, for example on the base or elsewhere on the device. The drive mechanism 120 is used to provide power to drive the road wheels 111 in rotation. The driving mechanism 120 may employ various power members capable of outputting power, such as a motor and the like.

The reduction gear mechanism 130 includes a first reduction gear mechanism 131 and a second reduction gear mechanism 132, and the reduction ratio of the second reduction gear mechanism 132 is larger than that of the first reduction gear mechanism 131. The first reduction transmission mechanism 131 and the second reduction transmission mechanism 132 can adopt various structures capable of realizing reduction, such as a reduction gear set, a reduction belt mechanism, a reduction chain mechanism, a reduction friction wheel mechanism and the like. Referring to fig. 2 to 4, the reduction gear mechanism 130 is shown to employ a reduction gear set, but the reduction gear mechanism 130 of the present embodiment is not limited to the reduction gear set.

The shift-position changing mechanism 140 is mainly configured to control the shift positions of the apparatus, and has a first shift position and a second shift position. Referring to fig. 3, in the first gear, the driving mechanism 120 is in transmission connection with the axle 112 of the traveling wheel assembly 110 through the first reduction transmission mechanism 131, and drives the traveling wheel 111 to rotate at a first speed. Referring to fig. 4, in the second gear, the driving mechanism 120 is connected to the axle 112 of the road wheel assembly 110 via the second reduction gear 132 to drive the road wheels 111 to rotate at the second speed. During the gear-position changing process, the driving mechanism 120 is always connected to the first reduction gear mechanism 131 and the second reduction gear mechanism 132, and the gear-position changing mechanism 140 can be used as an intermediate connecting member for connecting the wheel axle 112 to the corresponding first reduction gear mechanism 131 or second reduction gear mechanism 132, for example, as shown in fig. 2 to 4. In addition, the gearshift mechanism 140 may be configured to change the configuration or position of any of the drive mechanism 120, the reduction drive mechanism 130, and the road wheel assembly 110, such that the drive mechanism 120 is coupled to the axle 112 of the road wheel assembly 110 via the first reduction drive mechanism 131 in the first gear position and coupled to the axle 112 of the road wheel assembly 110 via the second reduction drive mechanism 132 in the second gear position. For example, the shift-position switching mechanism 140 may urge the drive mechanism 120 to move so as to be drivingly connected to the first reduction gear mechanism 131 or the second reduction gear mechanism 132 in different shift positions. Similarly, the gear shifting mechanism can also push the reduction transmission mechanism 130 or the traveling wheel assembly 110 to move, so as to achieve the purpose of gear shifting.

The reduction ratio of the second reduction gear mechanism 132 is larger than that of the first reduction gear mechanism 131, and therefore the speed of the running gear 100 in the first gear (first speed) is larger than the speed in the second gear (second speed). In the first gear, the traveling device 100 moves fast (relative to the second gear), and the output torque is small (relative to the second gear), so that the traveling device is suitable for the equipment to move on a normal horizontal plane. In the second gear, the traveling device 100 moves slowly (relative to the first gear), and the output torque is large (relative to the first gear), so that the traveling device is suitable for moving on a slope with a certain gradient.

In the walking device 100 shown in this embodiment, two gears can be flexibly switched according to an application scene, and two requirements of conventional horizontal ground use and uphill slope can be fulfilled by using a small motor, so that the user experience is improved, and the equipment cost can be reduced.

Referring to fig. 2, in one embodiment, the shift-position switching mechanism 140 can further have a third shift position, in which the driving mechanism 120 is separated from both the first reduction gearing mechanism 131 and the second reduction gearing mechanism 132. The third gear is neutral, in which the driving mechanism 120 cannot drive the road wheels 111 to rotate. Of course, in some embodiments, this third gear may be omitted, with no neutral being provided.

Further, the shift-position changing mechanism 140 can be controlled to change between the first gear position and the second gear position by controlling the shift-position changing mechanism 140 by an electric signal and/or a force signal. The electrical signal may be input through a physical button, a touch panel, a touch screen, or the like, to change the position of the gearshift mechanism 140, thereby instructing the gearshift mechanism 140 to shift to a corresponding gearshift. The force signal may be used to input a force through a mechanical structure to change the shift mechanism 140 and shift gears, such as a shift lever.

Further, referring to fig. 2 to 4, in an embodiment, the first reduction transmission mechanism 131 and the second reduction transmission mechanism 132 are connected to the output end of the driving mechanism 120. The shift-position switching mechanism 140 is drivingly connected to the traveling wheel assembly 110 and is capable of switching between the first reduction transmission mechanism 131 and the second reduction transmission mechanism 132. In this embodiment, the shift-position switching mechanism 140 is always in transmission connection with the traveling wheel assembly 110, and the shift position is switched by changing the connection state of the shift-position switching mechanism 140 with the first reduction gear mechanism 131 and the second reduction gear mechanism 132. For example, in a first gear position, the shift-position switching mechanism 140 is drivingly connected to the first reduction drive mechanism 131 for transmitting motion; in the second gear position, the shift-position changing mechanism 140 is drivingly connected to the second reduction drive mechanism 132 for transmitting motion.

In yet another embodiment, the first reduction drive mechanism 131 and the second reduction drive mechanism 132 can be in driving connection with the axle 112 of the road wheel assembly 110. In the first gear position, the gearshift mechanism 140 connects the first reduction gear mechanism 131 with the output 121 of the drive mechanism 120 to transmit motion. In the second gear position, the shift-position switching mechanism 140 connects the second reduction gear mechanism 132 with the output end 121 of the drive mechanism 120 to transmit motion. In this embodiment, the shift-position switching mechanism 140 is configured to change the connection state between the first and second reduction gears 131 and 132 and the drive mechanism 120, thereby achieving switching of the shift positions.

With continued reference to fig. 2-4, in one embodiment, the shift-position changing mechanism 140 includes a movably disposed input gear 141. In this embodiment, the input gear 141 moves in the axial direction of the hub 112. The input gear 141 is in driving connection with the axle 112 of the walking wheel assembly 110, the input gear 141 being configured to transmit a rotational movement to the axle 112. For example, the input gear 141 may be splined to the axle 112, such that the input gear 141 may drive the axle 112 to rotate and move in the axial direction of the axle 112 to be drivingly connected to different speed reducing mechanisms. Of course, the input gear 141 and the axle 112 may be connected in other ways, such as by a pulley or a sprocket.

The input gear 141 may be in driving engagement with the reduction gear mechanism 130. Specifically, in the first gear position, the input gear 141 is engaged with the first reduction gear 131; in the second gear, the input gear 141 meshes with the second reduction transmission mechanism 132.

As shown in fig. 2 to 4, in one embodiment, the input gear 141 is located between the first reduction gear 131 and the second reduction gear 132, and a surface of the input gear 141 facing the first reduction gear 131 is provided with a first engaging gear 1411 for engaging with the first reduction gear 131. The first reduction gears 131 are correspondingly provided with corresponding meshing gear teeth. A side of the input gear 141 facing the second reduction gear mechanism 132 is provided with second engagement gear teeth 1412 for engaging with the second reduction gear mechanism 132. The second reduction gears 132 are correspondingly provided with corresponding meshing gear teeth.

Of course, in some embodiments, the input gear 141 may also be disposed at the side of the first reduction gear 131 and the second reduction gear 132, and it may also be in gear engagement or other transmission connection with the first reduction gear 131 and the second reduction gear 132.

To drive the movement of input gear 141, in one embodiment, shift mechanism 140 further includes a shift assembly 142, and shift assembly 142 is coupled to input gear 141 to drive input gear 141 between the first and second gear positions. The shift assembly 142 may be rotatably coupled to the input gear 141, for example, the shift assembly 142 may be coupled to the input gear 141 via a bearing or may be coaxially movably coupled to the input gear 141. Thus, the input gear 141 can be driven to move between the reduction transmission mechanisms without affecting the rotation of the input gear 141.

Referring to fig. 2 to 4, the shift assembly 142 is mainly used for driving the input gear 141 to move between the reduction gears, and in one embodiment, the shift assembly 142 includes a shift connector 1421 and a shift control assembly 1422 for controlling the shift connector 1421 to move, the shift connector 1421 is rotatably connected to the input gear 141, and the shift control assembly 1422 is connected to the shift connector 1421 to drive the corresponding shift connector 1421 to move. The gear shifting connecting member 1421 may be, but is not limited to, a connecting rod, a cable, a transmission belt, etc., which can move the input gear 141 or other components for shifting gears.

Referring to fig. 2-4, only a portion of the shift control assembly 1422 is shown. In practice, the shift control assembly 1422 has a manual shift assembly and/or an electric shift assembly. The manual shift assembly can be, but is not limited to, a manual control element, which is connected to the shift link 1421, and the user manually controls the shift link 1421 to move, so as to move the input gear 141. The manual control element can be a gear shifting deflector rod, a gear shifting deflector piece and the like. The electric gear shifting assembly can be driven by structures such as but not limited to a linear motor, an electric push rod, a point bolt and the like, and a user can drive the input gear 141 to switch positions only by inputting related command signals.

In some embodiments, there may be one of the walking wheel assemblies 110. In the embodiment shown in fig. 5, the road wheel assembly 110 includes at least two. For example, the traveling wheel assemblies 110 may be arranged in a set of two substantially symmetrical states on both sides of the body 200.

Each set of the traveling wheel assemblies 110 is correspondingly provided with a reduction transmission mechanism 130 and an input gear 141. In addition, the traction wheel assemblies 110 may be provided with the driving mechanism 120 separately, or several or all of the traction wheel assemblies may share one driving mechanism 120. As shown in fig. 5, in the present embodiment, one driving mechanism 120 is provided for each of the traveling wheel assemblies 110. The input gears 141 of at least two traveling wheel assemblies 110 are connected to the same shift control assembly 1422 through corresponding shift connectors 1421. Thus, gear control of several of the road wheel assemblies 110 can be achieved by the single shift control assembly 1422.

With continued reference to fig. 5, in one embodiment, the shift link 1421 includes a first link 1421a and a second link 1421 b. The first link 1421a is connected to the corresponding input gear 141. One end of the second connecting rod 1421b is hinged to the first connecting rod 1421a, and the other ends of at least two second connecting rods 1421b are hinged to the same shift control assembly 1422, so that the shift control assembly 1422 controls more than two shift connecting pieces 1421 at the same time.

The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.

Claims

1. A walking device of an ambulatory medical device, comprising:

2. A walking device as claimed in claim 1, characterized in that said gear-change mechanism is controlled by an electric signal and/or a force signal to change between a first gear and a second gear.

3. The walking device of claim 1 or 2, wherein the first reduction transmission mechanism and the second reduction transmission mechanism are both connected with the output end of the driving mechanism, and the gear switching mechanism is in transmission connection with the wheel shaft of the walking wheel assembly and can switch between the first reduction transmission mechanism and the second reduction transmission mechanism; in the first gear position, the gear switching mechanism is connected with a first reduction transmission mechanism so as to transmit motion; in the second gear position, the gear switching mechanism is connected with a second reduction transmission mechanism to transmit motion.

4. The walking apparatus of claim 3, wherein the shift-position changing mechanism comprises a movably disposed input gear in driving connection with an axle of the road wheel assembly; in the first gear, the input gear is meshed with a first reduction transmission mechanism; in the second gear, the input gear is engaged with a second reduction transmission mechanism.

5. The running gear according to claim 4, wherein the input gear is provided between the first reduction gear and the second reduction gear, and a surface of the input gear facing the first reduction gear is provided with first engaging gear teeth for engaging with the first reduction gear, and a surface of the input gear facing the second reduction gear is provided with second engaging gear teeth for engaging with the second reduction gear.

6. The running gear of claim 4 or 5, wherein the shift mechanism further comprises a shift assembly rotatably coupled to the input gear for driving the input gear between the first gear and the second gear.

7. The running gear of claim 6, wherein the shift assembly includes shift links rotatably coupled to the input gear and a shift control assembly coupled to the shift links to drive movement of the corresponding shift links, the shift control assembly having a manual shift assembly and/or an electric shift assembly.

8. The walking device of claim 7, wherein the number of the walking wheel assemblies is at least two, each walking wheel assembly is provided with a driving mechanism, a reduction transmission mechanism and an input gear, and the input gears corresponding to at least two walking wheel assemblies are connected with the same gear shifting control assembly through corresponding gear shifting connecting pieces.

9. The walking apparatus of claim 8, wherein the shift links comprise a second link and a first link, the first link being connected to the corresponding input gear, the second link being hinged at one end to the first link, and at least two second links being hinged at the other end to the same shift control assembly, such that the shift control assembly controls more than two shift links simultaneously.

10. The walking device of claim 1, wherein the first reduction gear and the second reduction gear are each coupled to an axle of the walking wheel assembly, and in the first gear position, the shift mechanism couples the first reduction gear to an output of the drive mechanism to transmit motion; in the second gear position, the gear switching mechanism connects the second reduction transmission mechanism to the output of the drive mechanism for motion transmission.

11. The running gear of any one of claims 1 to 10, wherein the shift-position switching mechanism has a third gear position in which the drive mechanism is disengaged from both the first reduction transmission mechanism and the second reduction transmission mechanism.

12. The walking device of any one of claims 1-11, wherein the first reduction transmission mechanism and the second reduction transmission mechanism each employ a reduction gear set; the driving mechanism adopts a motor.

13. Mobile X-ray photographic apparatus, comprising a body and a traveller according to any of claims 1-12, mounted on the body.