Auxiliary device and conveying apparatus

Abstract

The application relates to the technical field of medical devices, in particular to an auxiliary device and a conveying device. The auxiliary device comprises a driving mechanism, a braking mechanism and an unlocking mechanism. The braking mechanism comprises a first braking part and a second braking part. The first braking part is connected with a driving shaft of the driving mechanism. When the second braking part is connected with the first braking part, the driving shaft is locked. When the second braking part is disconnected with the first braking part, the driving shaft is unlocked. When the braking mechanism is in the braking state and loses power supply, an external force is applied to a pushing part, the second braking part is disconnected with the first braking part, the braking mechanism is unlocked, the restriction of the braking mechanism on the driving shaft is released, the driving mechanism can drive the roller to rotate normally, and the auxiliary device has strong use reliability and use adaptability.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an auxiliary device and delivery equipment. Background Technology

[0002] When medical staff transfer patients or items, they usually use transport equipment such as wheelchairs and surgical robot trolleys.

[0003] To reduce operator difficulty and improve comfort and flexibility during the movement of a wheel press, some wheel presses employ an electric auxiliary device to drive the rollers. An electric brake is installed within this device to ensure the rollers can be braked; the brake is released when power is applied. However, in abnormal situations, such as when the electric brake loses power, the rollers cannot be unlocked. Since the rollers cannot rotate, they must be manually pushed along the ground, which is quite difficult. Summary of the Invention

[0004] Therefore, it is necessary to provide an auxiliary device that solves the problem of low reliability of existing auxiliary devices.

[0005] An auxiliary device for assisting the movement of a conveying device, comprising:

[0006] A drive mechanism is provided for connection to the rollers of the conveying device to drive the rollers to rotate about their own axis.

[0007] A braking mechanism, comprising a first braking part and a second braking part; the first braking part is connected to the drive shaft of the driving mechanism, and when the second braking part is connected to the first braking part, it locks the drive shaft.

[0008] The unlocking mechanism includes a toggle part that acts on the second braking part to disengage the second braking part from the first braking part, thereby unlocking the drive shaft.

[0009] In one embodiment, the second braking part includes a pushing part having a first braking position and a first unlocking position. When the pushing part is in the first braking position, it locks the drive shaft; when the pushing part is in the first unlocking position, it unlocks the drive shaft.

[0010] The actuating part is configured to be operably rotated to move the pushing part from the first braking position to the first unlocking position.

[0011] In one embodiment, the thickness of the push portion gradually increases axially along the circumference of the drive shaft.

[0012] In one embodiment, the actuating part includes a second braking position and a second unlocking position. Along the axial direction of the drive shaft, the distance between the second braking position and the second braking part is smaller than the distance between the second unlocking position and the second braking part. When the actuating part is rotated to the second braking position and connected to the pushing part, the pushing part is in the first braking position.

[0013] When the actuating part is rotated to the second unlocking position and connected to the pushing part, the pushing part is in the first unlocking position.

[0014] In one embodiment, there are two sets of both the driving mechanism and the braking mechanism, and the two sets of the driving mechanism and the braking mechanism are symmetrically arranged on both sides of the unlocking mechanism; there are two actuating parts, and each actuating part is connected to one pushing part.

[0015] The unlocking mechanism includes a transmission assembly, the output end of which is connected to the two actuating parts. The transmission assembly is configured to be operablely movable to drive the actuating parts to rotate.

[0016] In one embodiment, the transmission assembly includes a first bevel gear, a second bevel gear, and a third bevel gear. The second bevel gear and the third bevel gear are symmetrically arranged on both sides of the first bevel gear and both mesh with the first bevel gear. The second bevel gear and the third bevel gear are respectively connected to a set of the actuating parts.

[0017] In one embodiment, the actuating part includes a first connecting plate and a second connecting plate, the first connecting plate being rotatably connected to the pushing part, and the second connecting plate extending radially from the first connecting plate along the drive shaft; the second braking position and the second unlocking position are both located on the first connecting plate;

[0018] The transmission assembly includes two sets of first connecting members, each set of first connecting members including a first segment and a second segment. One set of first segments is connected to the second bevel gear, and the other set of first segments is connected to the third bevel gear. The second segment extends from the first segment toward the second connecting plate on the same side, and the second segment is connected to the second connecting plate on the same side.

[0019] In one embodiment, the unlocking mechanism includes a second mounting base and an operating part, the operating part being connected to the first bevel gear; the second mounting base is provided with a groove extending circumferentially along the second mounting base; the operating part is provided with a limiting post, the limiting post being rotatably connected to the groove wall;

[0020] The operating part is configured to be operably rotated to rotate the limiting post from the first end of the groove to the second end, and the operating part drives the pushing part to move from the first braking position to the first unlocking position through the transmission assembly.

[0021] In one embodiment, the actuating part includes an eccentric wheel with an eccentric shaft rotatably connected to the housing of the braking mechanism;

[0022] When the eccentric wheel rotates to the first region of the outer peripheral surface and connects to the pushing part, the pushing part is in the first braking position;

[0023] When the eccentric wheel rotates to the second region of the outer peripheral surface and connects to the pushing part, the pushing part is in the first unlocked position;

[0024] The distance between the first region and the eccentric axis is greater than the distance between the second region and the eccentric axis.

[0025] A conveying device includes a frame, rollers, and auxiliary devices as described above, wherein the rollers are rotatably connected to the frame, and the auxiliary devices are connected to the rollers.

[0026] This technical solution has the following beneficial effects: The aforementioned auxiliary device for assisting the movement of conveying equipment includes a drive mechanism, a braking mechanism, and an unlocking mechanism. The drive mechanism is used to connect with the rollers of the conveying equipment to drive the rollers to rotate; the braking mechanism includes a first braking part and a second braking part. The first braking part is connected to the drive shaft of the drive mechanism. When the second braking part is connected to the first braking part, the drive shaft is locked; when the second braking part is disconnected from the first braking part, the drive shaft is unlocked, i.e., the braking mechanism is in an unlocked state. The unlocking mechanism includes a toggle part, which acts on the second braking part to disengage it from the first braking part, thereby unlocking the drive shaft. When the braking mechanism is in a braking state and power is lost, external force acts on the toggle part to disengage the second braking part from the first braking part, thereby unlocking the braking mechanism and releasing the restriction of the braking mechanism on the drive shaft. This allows the drive mechanism to drive the rollers to rotate normally to adapt to abnormal situations. Therefore, this auxiliary device has strong reliability and adaptability in use. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an auxiliary device provided in an embodiment of the present invention;

[0028] Figure 2 for Figure 1 A partial exploded view of the auxiliary device shown;

[0029] Figure 3 for Figure 1 A partial schematic diagram of the auxiliary device shown;

[0030] Figure 4 for Figure 3 Right view of the auxiliary device shown;

[0031] Figure 5 for Figure 3 A schematic diagram of the braking mechanism and actuating part in the auxiliary device shown;

[0032] Figure 6 for Figure 5 A cross-sectional view of the braking mechanism and actuating part shown;

[0033] Figure 7 A schematic diagram of the braking mechanism provided in the second embodiment;

[0034] Figure 8 for Figure 1 A partial schematic diagram of the auxiliary device shown;

[0035] Figure 9 for Figure 8 A partial exploded view of the unlocking mechanism in the auxiliary device shown.

[0036] Reference numerals: 10-Auxiliary device; 100-Drive mechanism; 110-Drive component; 120-Driving gear; 130-Driven gear; 140-Bearing; 150-First mounting base; 160-Housing; 200-Brake mechanism; 210-Pushing part; 220-Second braking part; 230-First braking part; 300-Unlocking mechanism; 310-Toggle part; 311-Second unlocking position; 312-Second braking position; 313-First connecting plate; 314-Second connecting plate; 331-First bevel gear; 332-Second bevel gear; 333-Third bevel gear; 334-First connecting shaft; 340-Operating part; 341-Limiting post; 342-Rotating groove; 350-First connecting component; 351-First section; 352-Second section; 360-Second mounting base; 361-Groove; 370-Third mounting base; 400-Roller. Detailed Implementation

[0037] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0043] like Figures 1 to 4 As shown, an embodiment of the present invention provides an auxiliary device 10 for assisting the movement of a conveying device. The auxiliary device 10 includes a drive mechanism 100, a braking mechanism 200, and an unlocking mechanism 300. The drive mechanism 100 is connected to the rollers 400 of the conveying device to drive the rollers 400 to rotate around their own axis. The braking mechanism 200 includes a first braking part 230 and a second braking part. The first braking part 230 is connected to the drive shaft of the drive mechanism 100. When the second braking part 220 is connected to the first braking part 230, it locks the drive shaft. The unlocking mechanism 300 includes a toggle part 310, which acts on the second braking part 220 to disengage it from the first braking part 230, thereby unlocking the drive shaft. By driving the rollers 400 forward or backward through the drive mechanism 100, the conveying device can automatically move forward or backward, reducing the workload of manual operation and simplifying the operation of the conveying device.

[0044] The braking mechanism 200 can specifically be an electromagnetic brake, including an electromagnet and an elastic element. When the electromagnet is energized, it generates magnetic force, which drives the second braking part 220 and the elastic element to move in a direction away from the first braking part 230. That is, the elastic element will undergo elastic deformation. At the same time, the second braking part 220 and the first braking part 230 disengage, releasing the restriction on the drive shaft and putting the drive shaft into an operable state.

[0045] When the electromagnet is de-energized, the elastic element recovers its elastic deformation by relying on elastic force, and drives the second braking part 220 to reset, so that the second braking part 220 abuts against the first braking part 230, thereby restricting the rotation of the drive shaft and realizing braking.

[0046] When the braking mechanism 200 is in a braking state and cannot receive power, that is, the drive mechanism 100 is restricted by the braking mechanism 200 and cannot move, an external force is applied to the actuating part 310 of the unlocking mechanism 300. The actuating part 310 drives the second braking part 220 to move, so that the second braking part 220 is disconnected from the first braking part 230, thereby unlocking the braking mechanism 200 and releasing the restriction of the braking mechanism 200 on the drive shaft. This allows the drive mechanism 100 to drive the roller 400 to rotate normally, improving the reliability of the auxiliary device 10 in assisting the movement of the conveying equipment.

[0047] In one embodiment, the second braking part 220 includes a pushing part 210, which has a first braking position and a first unlocking position. When the pushing part 210 is in the first braking position, it is connected to the first braking part 230 and restricts the rotation of the drive shaft, thereby locking the drive shaft. When the pushing part 210 is in the first unlocking position, it is disconnected from the first braking part 230 to release the rotation restriction on the drive shaft, thereby unlocking the drive shaft. The toggle part 310 is configured to be operablely movable to drive the pushing part 210 from the first braking position to the first unlocking position.

[0048] like Figure 5 and Figure 6 As shown, in this embodiment, the pushing part 210 moves linearly relative to the first braking part 230, that is, the pushing part 210 moves from the first braking position to the first unlocking position in a direction away from the first braking part 230, thereby unlocking the drive mechanism 100. Figures 3 to 6 As shown, when the pushing part 210 is in the first unlocked position, the second braking part 220 and the first braking part 230 are positioned opposite each other and spaced apart, meaning the second braking part 220 is disengaged from the first braking part 230. The second braking part 220 no longer restricts the rotation of the first braking part 230, allowing the drive shaft to operate normally and thus drive the roller 400 to rotate. When the pushing part 210 moves towards the first braking position, close to the first braking part 230, the pushing part 210 causes the second braking part 220 to abut against the first braking part 230. Therefore, the second braking part 220 restricts the rotation of the first braking part 230. Since the first braking part 230 is connected to the drive shaft, it restricts the rotation of the drive shaft, thereby restricting the rotation of the roller 400 and achieving a braking effect.

[0049] like Figure 5 and Figure 6As shown, in one specific embodiment, the actuating part 310 is configured to be operably rotated to move the pushing part 210 from the first braking position to the first unlocking position. This arrangement converts the circumferential rotation of the actuating part 310 into axial movement of the pushing part 210, i.e., the Z direction in the figure, thereby disengaging the pushing part 210 from the first braking part 230 and unlocking the drive mechanism 100. Simultaneously, it reduces the overall axial space occupied by the actuating part 310 and the pushing part 210, making the layout of the entire unlocking mechanism 300 more compact. In other embodiments, the actuating part may be slidably connected to the housing of the braking mechanism, and by moving the actuating part away from the first braking part in a straight line, the pushing part connected to the actuating part may be disengaged from the first braking part. The axial direction mentioned below refers to the Z direction in the figure.

[0050] like Figures 3 to 6 As shown, in one embodiment, the actuating part 310 is configured to be operably rotated. The actuating part 310 includes a second braking position 312 and a second unlocking position 311. It should be noted that the second braking position 312 and the second unlocking position 311 are distributed circumferentially along the actuating part 310. For ease of understanding and illustration, the second unlocking position 311 is marked on the radial side of the second braking position 312. The axial distance between the second braking position 312 and the second braking part 220 is smaller than the axial distance between the second unlocking position 311 and the second braking part 220. When the pushing part 210 is connected to the second braking position 312, the pushing part 210 is in the first braking position; when the pushing part 210 is connected to the second unlocking position 311, the pushing part 210 is in the first unlocking position. In other words, during the process of the actuating part 310 rotating from the second braking position 312 to the second unlocking position 311 and connecting to the pushing part 210, the pushing part 210 moves away from the actuating part 310 along the axial direction, that is, moves away in a straight line from the first braking part 230, until the pushing part 210 is disconnected from the first braking part 230, that is, the first braking part 230 and the second braking part 220 are separated, thereby releasing the braking mechanism 200 from the rotation restriction of the drive shaft.

[0051] It should be noted that when the drive shaft is in the braking state, that is, the push part 210 is connected to the second braking position 312 and the two are aligned axially; when the electromagnet is energized to unlock, there is no need to rotate the toggle part 310. Under the action of magnetic force, the push part 210 is driven to move away from the second braking position 312 in a straight line, so that the push part 210 is disengaged from the second braking position 312. In other words, the two are still aligned axially.

[0052] like Figures 5 to 6As shown, in one embodiment, the actuating part 310 can be a toggle plate. The end face of the toggle plate facing the first braking part 230 has an inwardly recessed groove, which is the location of the second unlocking position 312. The area of ​​the end face other than the groove, i.e., the plane, can be regarded as the second braking position 311. When the pushing part 210 is connected to the second braking position 312, that is, when the pushing part 210 is engaged with the groove, it can be understood that the pushing part 210 and the second braking part 220 move upward relative to the first braking part 230, so that the second braking part 220 is connected to the first braking part 230, thereby restricting the rotation of the drive shaft. When the pushing part 210 is connected to the second unlocking position 311, that is, when the pushing part 210 abuts against the plane, the pushing part and the second braking part 220 move downward relative to the first braking part 230, so that the second braking part 220 is disengaged from the first braking part 230, thereby releasing the rotation restriction on the first braking part 230 and the drive shaft.

[0053] In another embodiment, unlike the embodiment where the actuating part is a toggle plate, the actuating part is an eccentric wheel with an eccentric shaft, which is rotatably connected to the housing of the braking mechanism. When the eccentric wheel rotates to a first region on its outer circumference that connects to the pushing part, the pushing part is in a first braking position, i.e., connected to the first braking part. When the eccentric wheel rotates to a second region on its outer circumference that connects to the pushing part, the pushing part is in a first unlocking position, i.e., disconnected from the first braking part. The distance between the first region and the eccentric shaft is a first distance, and the distance between the second region and the eccentric shaft is a second distance; the first distance is smaller than the second distance. By rotating the eccentric wheel to different positions and connecting it to the pushing part, the pushing part is driven to perform linear reciprocating motion, causing it to move from the first braking position to the first unlocking position. Specifically, the eccentric wheel can be a cam, with the first region being the small-diameter end and the second region being the large-diameter end. When the cam rotates to the small-diameter end and connects to the pushing part, the pushing part is in the first braking position; when the cam rotates to the large-diameter end and connects to the pushing part, the pushing part is in the first unlocking position.

[0054] like Figure 7 As shown, in another embodiment, the thickness of the actuating portion 310 gradually increases along the axial direction along the circumference of the drive shaft. Thus, when the actuating portion 310 rotates circumferentially, its gradually increasing thickness pushes the pushing portion 210 away from the actuating portion 310 until the second braking portion 220 disengages from the first braking portion 230, thereby unlocking the device.

[0055] like Figure 1 and Figure 8As shown, in one embodiment, there are two sets of driving mechanisms 100 and braking mechanisms 200, and the two sets of driving mechanisms 100 and braking mechanisms 200 are symmetrically arranged on both sides of the unlocking mechanism 300; there are two actuating parts 310, and each actuating part 310 is connected to a pushing part 210. The unlocking mechanism 300 includes a transmission assembly, the output end of which is connected to the two actuating parts 310. The transmission assembly is configured to be operablely movable to drive the actuating parts 310 to rotate.

[0056] Specifically, the auxiliary device 10 is suitable for conveying equipment having at least two rollers 400, which are arranged symmetrically on the left and right sides. Two sets of drive mechanisms 100 are used to control the rotation of the two rollers 400, two sets of braking mechanisms 200 are used to control the braking and unlocking of the two sets of drive mechanisms 100, and two actuating parts 310 are used to drive the corresponding pushing parts 210 from the first braking position to the first unlocking position.

[0057] like Figure 1 As shown, when the two rollers 400 rotate clockwise or counterclockwise at the same speed, the conveying device can move forward or backward in a straight line. When the two rollers 400 rotate clockwise or counterclockwise at different speeds, the conveying device can turn. By setting a transmission assembly, when it is necessary to unlock the drive mechanism 100, only one set of transmission assemblies needs to be operated, and the power is transmitted to the two actuating parts 310 respectively, so that the two actuating parts 310 simultaneously drive the pushing part 210 to move, realizing the linkage unlocking of the braking mechanism 200, making the unlocking operation more convenient. In other embodiments, two sets of unlocking mechanisms 300 can also be set separately on the two rollers 400. Each set of unlocking mechanisms 300 only needs to set one actuating part 310, one unlocking mechanism 300 is used to unlock one drive mechanism 100, and the other unlocking mechanism 300 is used to unlock the other drive mechanism 100.

[0058] like Figures 5 to 9As shown, in a specific embodiment, the transmission assembly includes a first bevel gear 331, a second bevel gear 332, and a third bevel gear 333. The second bevel gear 332 and the third bevel gear 333 are symmetrically arranged on both sides of the first bevel gear 331 and both mesh with the first bevel gear 331. The second bevel gear 332 and the third bevel gear 333 are respectively connected to a set of actuating parts 310. The second braking position 312 and the second unlocking position 311 of the left actuating part 310 are arranged sequentially in a clockwise direction; the second braking position and the second unlocking position of the right actuating part are arranged sequentially in a counterclockwise direction. Thus, from the perspective of the unlocking mechanism 300 facing the roller, the actuating parts 310 all rotate counterclockwise from the second braking position 312 to the second unlocking position 311, facilitating the processing and installation of the unlocking mechanism 300. During processing, it is only necessary to arrange the second braking position 312 and the second unlocking position 311 sequentially in a counterclockwise direction, without considering whether the installation side is on the left or right.

[0059] Specifically, with Figure 8 and Figure 9 Taking the view as an example, the second bevel gear 332 on the left is connected to the left actuating part 310, and the third bevel gear 333 on the right is connected to the right actuating part 310. When the first bevel gear 331 is rotated counterclockwise, it drives the second bevel gear 332 to rotate clockwise, and the left actuating part 310 rotates clockwise to the second unlocking position 311 and is connected to the pushing part 210; the first bevel gear 331 drives the third bevel gear 333 to rotate counterclockwise, and the right actuating part 310 rotates counterclockwise to the second unlocking position 311 and is connected to the pushing part 210, so that the pushing part 210 releases the rotation restriction on the drive shaft.

[0060] In other embodiments, the transmission assembly may include a first gear, a second gear, and a transmission plate. The central axis of the first gear is connected to the left-side actuating part, and the central axis of the second gear is connected to the right-side actuating part. The transmission plate is a U-shaped plate, and racks are connected to the two side walls of the U-shaped plate facing the first and second gears, respectively. The racks on both sides mesh with the first and second gears. When the racks move up and down, they drive the first and second gears meshing with them to rotate simultaneously around their own axes. It should be noted that in this embodiment, the two actuating parts rotate in the same direction from the second braking position to the second unlocking position. For example, if the second braking position and the second unlocking position of the left actuating part are arranged sequentially in a clockwise direction, then the second braking position and the second unlocking position of the right actuating part are also arranged sequentially in a clockwise direction.

[0061] like Figures 3 to 8As shown, in an optional embodiment, the actuating part 310 includes a first connecting plate 313 and a second connecting plate 314. The first connecting plate 313 is rotatably connected to the pushing part 210, and the second connecting plate 314 extends radially from the first connecting plate 313 along the drive shaft. The second unlocking position 311 and the second braking position 312 are both located on the first connecting plate 313. Figures 3 to 9 As shown, the transmission assembly includes two sets of first connecting members 350. Each first connecting member 350 includes a first segment 351 and a second segment 352. The first segment 351 on the left is connected to the second bevel gear 332, and the first segment on the right is connected to the third bevel gear. The second segment 352 extends from the first segment 351 toward the second connecting plate 314 on the same side and is connected to the second connecting plate 314.

[0062] Since the second connecting plate 314 extends relative to the first connecting plate 313, and the second segment 352 extends relative to the first segment 351, it not only facilitates the connection between the second connecting plate 314 and the second segment 352, but also provides a certain amount of clearance, reducing the possibility of interference with other components after the connection, thereby improving the reliability of the toggle part 310 rotating to the second unlock position 311. Specifically, the edge of the first connecting plate 313 is arc-shaped, which facilitates the processing of the first connecting plate 313; the second connecting plate 314 is engaged with the second segment 352; the second segment 352 is engaged with the first segment 351, and the first segment 351 is engaged with the second bevel gear 332 or the third bevel gear 333.

[0063] like Figures 5 to 9 As shown, in one embodiment, the auxiliary device 10 further includes a third mounting base 370, which has a receiving space. The first bevel gear 331, the second bevel gear 332, and the third bevel gear 333 are all disposed within this receiving space. The gear shafts of the second bevel gear 332 and the third bevel gear 333 pass through the side wall of the third mounting base 370 and are connected to the corresponding actuating part 310. By accommodating multiple bevel gears within the receiving space, the risk of external dust or debris adhering to the bevel gears and affecting the meshing transmission is reduced, thereby improving its transmission accuracy.

[0064] like Figures 5 to 9 As shown, in one embodiment, the unlocking mechanism 300 includes a second mounting base 360 ​​and an operating part 340. The operating part 340 is connected to a first bevel gear 331. A groove 361 is provided on the second mounting base 360, extending circumferentially along the second mounting base 360. The operating part 340 is provided with a limiting post 341, which is rotatably connected to the groove wall of the groove 361. The operating part 340 is configured to be operablely rotatable, so that the limiting post 341 rotates from a first end to a second end of the groove 361. The operating part 340 drives the pushing part 210 to move from a first braking position to a first unlocking position via a transmission assembly.

[0065] Specifically, the center of the first bevel gear 331 is connected to a first connecting shaft 334. The end of the first connecting shaft 334 facing away from the first bevel gear 331 passes through the second mounting base 360 ​​and is connected to the operating part 340. By rotating the operating part 340, the first connecting shaft 334 and the first bevel gear 331 are driven to rotate, thereby transmitting power to the second bevel gear 332 and the third bevel gear 333. This, in turn, drives the actuating part 310 to rotate to the second unlocking position 311, which is connected to the pushing part 210, causing the pushing part 210 to move from the first braking position to the first unlocking position. The second mounting base 360 ​​specifically includes a sleeve and a counterweight connected to the outer circumference of the sleeve. The sleeve is used for the first connecting shaft 334 to pass through, and the counterweight serves to increase weight and reduce the risk of the sleeve rotating during the rotation of the first connecting shaft 334. The groove 361 is set on the counterweight. When the operating part 340 is rotated, the limiting post 341 on the operating part 340 rotates synchronously in the groove 361 until it is limited at the groove wall of the groove 361. Through the cooperation of the groove 361 and the limiting post 341, the rotation angle of the operating part 340 is controlled, thereby controlling the movement stroke of the actuating part 310 and the pushing part 210, reducing the risk of damaging the braking mechanism 200 due to excessive movement stroke, and ensuring the braking reliability of the braking mechanism 200.

[0066] like Figures 5 to 9 As shown, in one embodiment, when the pushing part 210 is in the second braking position 312, the limiting post 341 is correspondingly connected to the upper groove wall of the groove 361. When the limiting post 341 rotates counterclockwise from the upper groove wall to the lower groove wall, the pushing part 210 moves to the second unlocking position 311, thereby reducing the operational difficulty of the unlocking mechanism 300. The operating part 340 is specifically an operating knob. The outer peripheral surface of the operating knob is provided with multiple recessed rotation grooves 342, which facilitates the operator to hold and rotate the operating knob.

[0067] like Figure 2 As shown, in one embodiment, the drive mechanism 100 includes a drive member 110, a driving gear 120, and a driven gear 130. The drive shaft of the drive member 110 is connected to the driving gear 120, and the driving gear 120 meshes with the driven gear 130. The driven gear 130 is used to connect to the roller 400, and power is transmitted to the roller 400 through the driving gear 120 and the driven gear 130. The driving gear 120 has fewer teeth than the driven gear 130, which reduces the rotational speed and increases the torque. In other embodiments, the drive shaft of the drive member 110 can also be directly connected to the roller to drive the roller to rotate.

[0068] like Figure 2As shown, in another embodiment, the drive mechanism 100 further includes a bearing 140, a first mounting base 150, and a housing 160 connected to the first mounting base 150. Both the driving gear 120 and the driven gear 130 are housed within the housing 160 to improve dust protection. The first mounting base 150 has a through hole for the gear shaft of the driven gear 130 to pass through. The gear shaft passing through the through hole is connected to the inner ring of the bearing 140, and the outer ring of the bearing 140 is connected to the roller 400. By providing the bearing 140, wear on the roller 400 and the driven gear 130 during rotation is reduced.

[0069] The aforementioned auxiliary device 10 drives the rollers 400 of the conveying equipment to rotate via the drive mechanism 100, thereby enabling the conveying equipment to move forward or backward. The braking mechanism 200 restricts the rotation of the drive shaft to ensure the braking reliability of the conveying equipment during operation. When the braking mechanism 200 is energized, it can release the restriction on the drive shaft. In case of an abnormal situation, such as when the braking mechanism 200 cannot receive power, the first bevel gear 331 is rotated by rotating the operating part 340. The first bevel gear 331 drives the second bevel gear 332 and the third bevel gear 333 to rotate in opposite directions, transmitting power to the corresponding actuating part 310. The actuating part 310 rotates around the axis of the drive shaft to the second unlocking position 311, causing the pushing part 210 to move from the first braking position to the first unlocking position. This disengages the pushing part 210 from the first braking part 230, releasing the restriction on the drive shaft. This allows the drive mechanism 100 to operate normally and drive the rollers 400 to rotate, thus enabling the conveying equipment to perform its conveying function with high reliability.

[0070] Furthermore, the present invention also provides a conveying device (not shown), including a frame, rollers, and the aforementioned auxiliary device 10. The rollers are rotatably connected to the frame, and the auxiliary device 10 is connected to the rollers. The auxiliary device enables the conveying device to move forward, backward, and brake. When the braking mechanism in the auxiliary device is in a braking state and power is lost, an external force acts on the actuating part, causing the pushing part to disengage from the first braking part, thereby unlocking the braking mechanism and releasing its restriction on the drive shaft. This allows the drive mechanism to drive the rollers to rotate normally, giving the conveying device strong reliability and adaptability. In a practical application scenario, this conveying device can be a wheelchair for transferring patients.

[0071] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An auxiliary device for assisting the movement of a conveying device, characterized in that, The conveying equipment includes a wheel bed, and the auxiliary device includes: A drive mechanism (100) is used to connect to the roller (400) of the conveying device to drive the roller (400) to rotate about its own axis; The braking mechanism (200) includes a first braking part (230) and a second braking part (220). The first braking part (230) is connected to the drive shaft of the drive mechanism (100). When the second braking part (220) is connected to the first braking part (230), the drive shaft is locked. The unlocking mechanism (300) includes a toggle part (310). When the braking mechanism is in a braking state and loses power supply, an external force is applied to the toggle part, and the toggle part (310) acts on the second braking part (220) to disengage the second braking part (220) from the first braking part (230), thereby unlocking the drive shaft and enabling the drive mechanism (100) to drive the roller (400) to move. The second braking part (220) includes a pushing part (210), which has a first braking position and a first unlocking position. When the pushing part (210) is in the first braking position, it locks the drive shaft; when the pushing part (210) is in the first unlocking position, it unlocks the drive shaft. The actuating part (310) is configured to be operably rotated to move the pushing part (210) from the first braking position to the first unlocking position. Along the circumference of the drive shaft, the thickness of the actuating part (310) gradually increases along the axial direction. When the actuating part (310) rotates in the circumference, it can push the pushing part (210) away from the actuating part (310) until the second braking part (220) disengages from the first braking part (230).

2. The auxiliary device according to claim 1, characterized in that, The actuating part (310) includes a second braking position (312) and a second unlocking position (311). Along the axial direction of the drive shaft, the distance between the second braking position (312) and the second braking part (220) is smaller than the distance between the second unlocking position (311) and the second braking part (220). When the actuating part (310) rotates to the second braking position (312) and is connected to the pushing part (210), the pushing part (210) is in the first braking position. When the actuating part (310) is rotated to the second unlocking position (311) and connected to the pushing part (210), the pushing part (210) is in the first unlocking position.

3. The auxiliary device according to claim 2, characterized in that, The number of the driving mechanism (100) and the braking mechanism (200) are both two sets, and the two sets of the driving mechanism (100) and the braking mechanism (200) are symmetrically arranged on both sides of the unlocking mechanism; the number of the toggle part is two, and each toggle part is connected to one push part; The unlocking mechanism (300) includes a transmission assembly whose output end is connected to two actuating parts (310). The transmission assembly is configured to be operablely movable to drive the actuating parts (310) to rotate.

4. The auxiliary device according to claim 3, characterized in that, The transmission assembly includes a first bevel gear (331), a second bevel gear (332), and a third bevel gear (333). The second bevel gear (332) and the third bevel gear (333) are symmetrically arranged on both sides of the first bevel gear (331) and both mesh with the first bevel gear (331). The second bevel gear (332) and the third bevel gear (333) are respectively connected to a set of the actuating parts (310).

5. The auxiliary device according to claim 4, characterized in that, The actuating part (310) includes a first connecting plate (313) and a second connecting plate (314). The first connecting plate (313) is rotatably connected to the pushing part (210), and the second connecting plate (314) extends radially from the first connecting plate (313) along the drive shaft. The second braking position (312) and the second unlocking position (311) are both located on the first connecting plate. The transmission assembly includes two sets of first connectors (350), each set of first connectors (350) including a first segment (351) and a second segment (352). One set of first segments (351) is connected to the second bevel gear (332), and the other set of first segments is connected to the third bevel gear (333). The second segment (352) extends from the first segment (351) toward the second connecting plate (314) on the same side, and the second segment (352) is connected to the second connecting plate (314) on the same side.

6. The auxiliary device according to claim 5, characterized in that, The unlocking mechanism (300) includes a second mounting base (360) and an operating part (340), the operating part being connected to the first bevel gear (331); the second mounting base (360) is provided with a groove (361), the groove (361) extending circumferentially along the second mounting base (360); the operating part (340) is provided with a limiting post (341), the limiting post being rotatably connected to the groove wall; The operating part (340) is configured to be operably rotated to rotate the limiting post (341) from the first end of the groove (361) to the second end, and the operating part drives the pushing part (210) to move from the first braking position to the first unlocking position through the transmission assembly.

7. The auxiliary device according to claim 1, characterized in that, The actuating part includes an eccentric wheel with an eccentric shaft, the eccentric shaft being rotatably connected to the housing of the braking mechanism; When the eccentric wheel rotates to the first region of the outer peripheral surface and connects to the pushing part, the pushing part is in the first braking position; When the eccentric wheel rotates to the second region of the outer peripheral surface and connects to the pushing part, the pushing part is in the first unlocked position; The distance between the first region and the eccentric axis is greater than the distance between the second region and the eccentric axis.

8. A conveying device, characterized in that, It includes a frame, rollers, and an auxiliary device as described in any one of claims 1-7, wherein the rollers are rotatably connected to the frame, and the auxiliary device is connected to the rollers.

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