阅读说明：本技术 一种医用床车紧急制动装置及制动方法 (Emergency braking device and braking method for medical bed trolley ) 是由 杨雪 陈谦学 郭丽蕊 于 2021-07-09 设计创作，主要内容包括：本申请涉及一种医用紧急制动装置及制动方法,其包括按动装置、制动管、制动件和钢丝绳。其中,按动装置包括按钮、空心套管和按动组件,按动组件的底部设置有缠绕棒；制动件包括车轮制动和触地制动,且制动件设置在制动管的内部。按动装置安装于医用床车的把手,制动管安装于医用床车的轮胎,钢丝绳的两端分别连接缠绕棒和制动件。当出现紧急情况时,可按动按钮,通过按动组件使得缠绕棒收回,钢丝绳脱离释放,同时制动件被释放,触地制动触地,车轮制动弹出并伸入车轮,医用床车快速制动。该医用床车紧急制动装置操作简单,反应迅速,可有效解决医用床车出现不受控制的滑动和上下坡溜坡等紧急情况时,无法及时制动的问题。(The application relates to a medical emergency braking device and a braking method, which comprise a pressing device, a braking pipe, a braking piece and a steel wire rope. The pressing device comprises a button, a hollow sleeve and a pressing component, and a winding rod is arranged at the bottom of the pressing component; the brake member includes a wheel brake and a ground contact brake, and the brake member is disposed inside the brake pipe. The pressing device is arranged on a handle of the medical bed trolley, the brake pipe is arranged on a tire of the medical bed trolley, and two ends of the steel wire rope are respectively connected with the winding rod and the brake piece. When an emergency occurs, the button can be pressed, the winding rod is retracted by pressing the component, the steel wire rope is separated and released, meanwhile, the braking component is released, the ground contact brake is contacted with the ground, the wheel brake is popped out and extends into the wheel, and the medical bed trolley is rapidly braked. The emergency braking device for the medical bed trolley is simple to operate and rapid in response, and can effectively solve the problem that the medical bed trolley cannot be braked in time when the medical bed trolley has emergency situations such as uncontrolled sliding, slope slipping up and down and the like.)

1. The utility model provides a medical bed car emergency braking device which characterized in that:

the pressing device is arranged on a handle of the medical bed trolley and comprises a hollow sleeve (16) with an opening at one end, a button (3) partially arranged outside the opening and a pressing component arranged inside the hollow sleeve (16), and the bottom of the pressing component is provided with a winding rod (4) which stretches out and draws back from the bottom wall of the hollow sleeve (16);

the brake pipe (1) is arranged on the medical bed trolley and positioned outside the tire, and the brake pipe (1) and the medical bed trolley are in a relatively static state;

the braking part is telescopically arranged inside the braking pipe (1) and comprises a ground-contact brake (9) and a wheel brake (7), and the wheel brake (7) is elastically hinged on the side part of the ground-contact brake (9);

the two ends of the steel wire rope (5) are respectively connected with the winding rod (4) and the grounding brake (9);

in an initial state, the steel wire rope (5) is wound on the winding rod (4) extending out of the hollow sleeve (16), and the braking part is positioned in the brake pipe (1); when the button (3) is pressed, the winding rod (4) retracts into the hollow sleeve (16), the steel wire rope (5) is released, the braking part extends out of the brake pipe (1), the ground contact brake (9) is contacted with the ground, and the wheel brake (7) is ejected out and extends into the wheel.

2. The hospital bed emergency brake of claim 1, wherein: the pressing assembly further comprises a braking latch (10), a rotating latch (12) and a third spring (13), the braking latch (10) is connected to the bottom of the button (3), the rotating latch (12) is located below the braking latch (10), the top end of the winding rod (4) is connected with the bottom of the rotating latch (12), the bottom end of the winding rod (4) extends out of the bottom wall of the hollow sleeve (16), and two ends of the third spring (13) respectively abut against the rotating latch (12) and the inner bottom wall of the hollow sleeve (16);

when the button (3) is pressed down, the brake latch (10) moves downwards and is in butt joint with the rotating latch (12), and the third spring (13) is compressed;

when the button (3) is released, the third spring (13) rebounds, and the latch (12) is rotated to drive the winding rod (4) to move upwards.

3. The hospital bed emergency brake of claim 2, wherein: the inner wall of the hollow sleeve (16) is provided with at least one lug (11), the outer side wall of the brake latch (10) is provided with a matched groove, and when the button (3) is pressed down, the lug (11) enters the matched groove.

4. A hospital bed emergency brake as set forth in claim 3, wherein:

the hollow sleeve (16) is provided with double-layer side walls, the concave surface of the outer layer wall (162) of the hollow sleeve (16) is provided with a fixed latch (18), and the convex surface of the inner layer wall (161) of the hollow sleeve (16) is provided with a rotary latch (17);

the inner wall (161) of the hollow sleeve (16) rotates along with the brake latch (10) in the outer wall (162) according to a preset direction; and is caught by the fixed latch (18) when rotating in the direction opposite to the preset direction.

5. The hospital bed emergency brake of claim 1, wherein: a second spring (6) is arranged inside the brake pipe (1), one end of the second spring (6) is abutted against the top wall of the brake pipe (1), the other end of the second spring (6) is abutted against the top end of the grounding brake (9), and the steel wire rope (5) penetrates through the second spring (6).

6. The hospital bed emergency brake of claim 1, wherein: the side part of the ground-contacting brake (9) is hinged with the end part of the wheel brake (7), a first spring (8) is connected to the side part of the ground-contacting brake (9) close to the hinged point, the other end of the first spring (8) is connected with the wheel brake (7), and the connecting point is close to the hinged end of the wheel brake (7).

7. The hospital bed emergency brake of claim 1, wherein: the flexible soft conduit (2) is wrapped outside the steel wire rope (5), and the soft conduit (2) is made of stainless steel.

8. A medical bed trolley emergency brake device as claimed in claim 1, characterized in that the emergency brake device further comprises a starting tube (14), the side of the starting tube (14) is provided with an opening, a hollow sleeve (16) is inserted into the opening, and a shielding plate (15) is arranged inside the starting tube (14), and the shielding plate (15) is arranged at the opposite end of the opening of the starting tube (14).

9. A braking method based on the emergency braking device of the medical bed vehicle as claimed in any one of claims 1 to 8, characterized by comprising the following steps:

a. the button (3) is pressed, and the pressing component drives the winding rod (4) to move downwards;

b. when the button (3) is released, the winding rod (4) moves upwards into the hollow sleeve (16), the steel wire rope (5) is separated from the winding rod (4) and released, the braking part extends out of the brake pipe (1), the ground contact brake (9) is contacted with the ground, the wheel brake (7) is popped out and extends into the wheel, and the wheel is braked.

10. The braking method of claim 9,

the inner wall of the hollow sleeve (16) is provided with at least one lug (11), and the pressing component is provided with a groove;

the hollow sleeve (16) is provided with double-layer side walls, the concave surface of the outer layer wall (162) of the hollow sleeve (16) is provided with a fixed latch (18), and the convex surface of the inner layer wall (161) of the hollow sleeve (16) is provided with a rotary latch (17);

the braking method further includes:

the button (3) is pressed, the bump (11) enters the groove, the winding rod (4) moves downwards to extend out of the hollow sleeve (16), the button (3) is rotated according to a preset direction, the inner layer wall (161) of the hollow sleeve (16) and the winding rod (4) rotate along with the inner layer wall, the winding rod (4) winds the steel wire rope (5), the brake piece is retracted into the brake pipe (1) after the brake piece is used, the button (3) is loosened, and the inner layer wall (161) of the hollow sleeve (16) is clamped by the fixed clamping teeth (18) of the outer layer wall (162) of the hollow sleeve (16) and cannot rotate in the opposite direction.

Technical Field

The application relates to the technical field of medical auxiliary equipment, in particular to a medical bed vehicle emergency braking device and a braking method.

Background

At present, the condition that a patient cannot walk or needs to be transfused and transported at the same time often occurs in a hospital, and the patient can be transported by using a medical bed vehicle at the moment, so that the transportation speed can be increased, the movement of the patient can be reduced, and the safety of the patient is further ensured. The movement and braking of the existing medical bed trolley are mainly controlled by manpower, but in a hospital which is a place with complicated affairs, the existing medical bed trolley only depends on the manpower, certain defects are bound to exist, and particularly in the aspect of braking of the medical bed trolley, the defects of manpower control are obvious. In the transportation process of critical patients, particularly under the condition of climbing up and down slopes or excessively smooth road surfaces, the medical bed trolley is easy to have the emergency conditions of uncontrolled sliding or climbing up and down slopes and the like, the medical bed trolley is braked only by human reaction at the moment, the difficulty is high, and the emergency condition is often difficult to deal with by one person, so the accidental emergency condition easily causes the secondary injury of the patients, and the danger of the patients is greatly increased.

Disclosure of Invention

The embodiment of the application provides an emergency braking device and a braking method for a medical bed vehicle, and aims to solve the problem that the medical bed vehicle cannot be braked in time when emergency conditions such as uncontrolled sliding, slope slipping up and down and the like occur in the use process.

The application provides a medical bed car emergency braking device, it includes:

the pressing device is arranged on a handle of the medical bed trolley and comprises a hollow sleeve with an opening at one end, a button partially arranged outside the opening, and a pressing component arranged inside the hollow sleeve, wherein the bottom of the pressing component is provided with a winding rod which stretches out and draws back from the bottom wall of the hollow sleeve;

the brake pipe is arranged on the medical bed trolley and positioned outside the tire, and the brake pipe and the medical bed trolley are in a relatively static state;

the braking component is telescopically arranged inside the braking pipe and comprises a ground-contact brake and a wheel brake, and the wheel brake is elastically hinged on the side part of the ground-contact brake;

the two ends of the steel wire rope are respectively connected with the winding rod and the grounding brake;

in the initial state, the steel wire rope is wound on the winding rod extending out of the hollow sleeve, and the braking piece is positioned in the braking pipe; when the button is pressed, the winding rod retracts into the hollow sleeve, the steel wire rope is released, the braking part extends out of the braking pipe, the braking part touches the ground in a braking mode, and the wheel is braked and ejected out and extends into the wheel.

Furthermore, the pressing assembly further comprises a braking latch, a rotating latch and a third spring, the braking latch is connected to the bottom of the button, the rotating latch is located below the braking latch, the top end of the winding rod is connected with the bottom of the rotating latch, the bottom end of the winding rod extends out of the bottom wall of the hollow sleeve, and two ends of the third spring respectively abut against the rotating latch and the inner bottom wall of the hollow sleeve;

when the button is pressed down, the brake latch moves downwards and is in butt joint with the rotating latch, and the third spring is compressed; when the button is loosened, the third spring rebounds, and the latch is rotated to drive the winding rod to move upwards.

Furthermore, the inner wall of the hollow sleeve is provided with at least one lug, the outer side wall of the brake latch is provided with a matched groove, and when the button is pressed down, the lug enters the matched groove.

Furthermore, the hollow sleeve is provided with a double-layer side wall, the concave surface of the outer layer wall of the hollow sleeve is provided with a fixed latch, and the convex surface of the inner layer wall of the hollow sleeve is provided with a rotary latch;

the inner layer wall of the hollow sleeve rotates in the outer layer wall along with the braking latch in a preset direction; and when the rotating shaft rotates in the direction opposite to the preset direction, the rotating shaft is clamped by the fixed clamping teeth.

Furthermore, a second spring is arranged inside the brake pipe, one end of the second spring is abutted against the top wall of the brake pipe, the other end of the second spring is abutted against the top end of the grounding brake, and the steel wire rope penetrates through the second spring.

Further, the side part of the ground-contacting brake is hinged with the end part of the wheel brake, a first spring is connected to the side part of the ground-contacting brake close to the hinged point, the other end of the first spring is connected with the wheel brake, and the connected point is close to the hinged end of the wheel brake.

Furthermore, the steel wire rope is wrapped by a bendable flexible conduit, and the flexible conduit is made of stainless steel.

Furthermore, the emergency braking device further comprises a starting pipe, an opening is formed in the side portion of the starting pipe, the hollow sleeve is inserted into the opening, a shielding plate is arranged inside the starting pipe, and the shielding plate is arranged at the opposite end of the opening of the starting pipe.

The application also relates to a braking method based on the medical bed trolley emergency braking device, which comprises the following steps:

a. the button is pressed, and the pressing component drives the winding rod to move downwards;

b. when the button is released, the winding rod moves upwards into the hollow sleeve, the steel wire rope is separated from the winding rod and released, the braking part extends out of the braking pipe, the ground contact brake is contacted with the ground, the wheel brake is popped out and extends into the wheel, and the wheel is braked.

Furthermore, the inner wall of the hollow sleeve is provided with at least one lug, and the pressing component is provided with a groove;

the hollow sleeve is provided with double-layer side walls, the concave surface of the outer layer wall of the hollow sleeve is provided with a fixed latch, and the convex surface of the inner layer wall of the hollow sleeve is provided with a rotary latch;

furthermore, the button is pressed, the convex block enters the groove, the winding rod moves downwards to extend out of the hollow sleeve, the button is rotated according to a preset direction, the inner layer wall of the hollow sleeve and the winding rod rotate along with the button, the winding rod winds the steel wire rope, the braking piece is retracted into the braking pipe, the button is released, and the inner layer wall of the hollow sleeve is clamped by the fixing clamping teeth of the outer layer wall of the hollow sleeve and cannot rotate in the opposite direction.

The beneficial effect that technical scheme that this application provided brought includes:

the embodiment of the application provides a medical bed vehicle emergency braking device and a braking method, in the process of using the medical bed vehicle to transport patients, if the dangerous conditions of uncontrolled sliding and slope slipping are generated, a starting device is opened, the emergency braking device can quickly make a response, wheel braking and touchdown braking simultaneously play a role, the medical bed vehicle is braked in time, the stability of the bed vehicle is ensured, and the safety of the patients is also ensured.

After the dangerous condition is relieved, the braking part can be retracted, so that the medical bed trolley can be recovered to a normal use state, the braking part can be protected from being damaged, and the medical bed trolley can be used for the next time.

The emergency brake device for the medical bed trolley is simple to operate, small in size and suitable for various medical bed trolleys.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic overall appearance of the present invention.

Fig. 2 is a partial schematic structural view of the button and pressing assembly in fig. 1.

Fig. 3 is a partial structural view of the hollow casing of fig. 1.

Fig. 4 is a schematic view of the internal structure of the brake pipe in fig. 1.

Fig. 5 is a partial structural view of the braking member in fig. 1.

Fig. 6 is a schematic view of the connection between the pressing device and the fixing device in this embodiment.

Fig. 7 is a schematic view showing the connection of the brake pipe and the fixing device in this embodiment.

Fig. 8 is an external view schematically showing the medical bed cart mounted with the present invention.

Fig. 9 is a schematic view showing a braking state of the braking member of fig. 1.

Reference numerals:

1. a brake pipe; 2. a soft catheter; 3. a button; 4. a winding rod; 5. a wire rope; 6. a second spring; 7. braking the wheel; 8. a first spring; 9. braking in a grounding mode; 10. braking the latch; 11. a bump; 12. rotating the latch; 13. a third spring; 14. starting a tube; 15. a shielding plate; 16. a hollow sleeve; 161. an inner wall; 162. an outer wall; 17. rotating the latch; 18. fixing the latch; 19. fixing the screw; 20. and a fixing ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides an emergency braking device and a braking method for a medical bed vehicle, which can solve the problem that the medical bed vehicle cannot be braked in time when emergency conditions such as uncontrolled sliding, slope slipping up and down and the like occur in the use process.

As shown in fig. 1, the emergency braking device for the medical bed trolley comprises a pressing device, a braking pipe 1, a braking piece and a steel wire rope 5.

As shown in fig. 2 and 8, the pressing device is mounted at the handle of the medical bed cart, and includes a hollow sleeve 16 with an opening at one end, a button 3 partially disposed outside the opening, and a pressing component disposed on the hollow sleeve 16, wherein the winding rod 4 is mounted at the bottom of the pressing component, and the bottom of the hollow sleeve 16 has a hole matching the diameter of the winding rod 4, so that the winding rod 4 can extend to and retract from the bottom wall of the hollow sleeve 16.

As shown in fig. 8, the brake pipe 1 is installed outside the tire of the hospital bed, and the brake pipe 1 and the hospital bed are in a relatively static state, which means that when the hospital bed normally moves, the wheels rotate, but the brake pipe 1 does not rotate along with the rotation of the wheels. In some embodiments, the brake pipe 1 can be mounted on the wheel shaft of the hospital bed, or can be mounted on the bracket of the wheel.

It will be appreciated that the brake pipe 1 has a brake member inside, as shown in figure 5, and that the brake member can extend out of the brake pipe 1 or can be retracted into the brake pipe 1. The braking members comprise a ground contact brake 9 and a wheel brake 7, and the wheel brake 7 is elastically hinged at the side of the ground contact brake 9. When the medical bed vehicle is in a braking state, the grounding brake 9 and the wheel brake 7 simultaneously play a role, so that the medical bed vehicle can be more effectively braked.

One end of the steel wire rope 5 is connected with the side wall of the winding rod 4, and the other end is connected with the top end or the side wall of the grounding brake 9.

Specifically, in the initial state, the winding rod 4 is partially positioned inside the hollow sleeve 16 and partially protrudes from the hollow sleeve 16. At this time, the wire rope 5 is wound on the winding rod 4 extending out of the hollow sleeve 16, and the ground brake 9 and the wheel brake 7 are located inside the brake pipe 1.

When the button 3 is pressed, the winding rod 4 moves downwards for a certain distance after a series of linkage actions of the pressing component, then the button 3 is loosened, and the winding rod 4 is retracted into the hollow sleeve 16 under the driving of the pressing component. Since the hole diameter of the bottom wall of the hollow sleeve 16 is matched with the size of the winding rod 4, the steel wire rope 5 cannot enter the hollow sleeve 16 along with the winding rod 4, and therefore, the steel wire rope 5 is scraped off by the bottom wall of the hollow sleeve 16 and released. The pressing component is similar to a pressing component structure in a ball-point pen capable of being pressed, and the pressing principle of the pressing component is also the same as that of the ball-point pen; when the button 3 is pressed, the entire push assembly moves downward.

When the steel wire rope 5 is released, the ground-contact brake 9 and the wheel brake 7 at the other end of the steel wire rope 5 extend out of the brake pipe 1, the ground-contact brake 9 is contacted with the ground, and the wheel brake 7 is ejected out and extends into the wheel, as shown in fig. 9.

In order to achieve the braking effect, the length of the ground contact brake 9 can just contact the bottom surface after being released, the braking effect is achieved through the friction force between the ground contact brake and the ground, and meanwhile, the wheel brake 7 can smoothly extend into the wheel after being popped up to clamp the wheel.

Further, as shown in fig. 2, the pressing assembly further includes a braking latch 10, a rotating latch 12, and a third spring 13. Wherein, braking latch 10 fixed connection is in the bottom of button 3, rotates latch 12 and is located the below of braking latch 10, and braking latch 10 is in the state of breaking away from with rotating latch 12. The top end of the winding rod 4 is fixedly connected to the bottom of the rotary latch 12, and in an initial state, the bottom end of the winding rod 4 extends out of the bottom wall of the hollow sleeve 16. One end of the third spring 13 is connected with the bottom wall of the rotary latch 12 in a propping manner, and the other end is connected with the inner bottom wall of the hollow sleeve 16 in a propping manner.

Specifically, when the button 3 is pressed, the brake latch 10 moves downward to be abutted against the rotary latch 12, and at this time, the brake latch 10 moves downward together with the rotary latch 12, and the third spring 13 is compressed; when the push button 3 is released, the third spring 13 springs back, so that the rotary latch 12 moves upward and the winding rod 4 moves upward.

Further, as shown in fig. 3, the inner wall of the hollow sleeve 16 is provided with one or more protrusions 11, and the outer side wall of the detent latch 10 is provided with a groove matching the size of the protrusion 11. When the button 3 is pressed, the detent latch 10 moves downward, and the projection 11 also moves downward into the matching recess.

In this embodiment, as shown in fig. 3, the hollow sleeve 16 is provided with double-layered side walls with a space left therebetween, and the inner layer wall 161 and the outer layer wall 162 each have a concave surface and a convex surface. The concave surface of the outer wall 162 is provided with a fixed latch 18, the convex surface of the inner wall 161 is provided with a rotary latch 17, and the one or more projections 11 are arranged on the concave surface of the inner wall 161 of the hollow sleeve 16.

Specifically, after the button 3 is pressed, since the protrusion 11 enters the matching groove, the button 3 is rotated in the predetermined direction, the inner wall 161 of the hollow sleeve 16 is also rotated in the predetermined direction along with the brake latch 10, in this process, the outer wall 162 of the hollow sleeve 16 is fixed, and in the rotating process, the steel wire rope 5 can be wound on the winding rod 4 extending out of the bottom wall of the hollow sleeve 16. After the button 3 stops rotating, the rotary latch 17 is clamped by the fixed latch 18, the rotary latch 17 is prevented from rotating in the direction opposite to the preset direction, and the situation that the brake member cannot be retracted due to the fact that the button 3 rotates when the button 3 is released by a hand and the steel wire rope 5 cannot be retracted is avoided. The preset direction may be clockwise or counterclockwise.

In other embodiments, the hollow sleeve 16 may not have a hollow sandwich structure, but only need to be provided with one or more protrusions 11 on its inner wall.

Furthermore, the upper end of the hollow sleeve 16 may be provided with a removable cover having an opening for receiving a portion of the button 3 inside the hollow sleeve 16, the diameter of the opening matching the size of the button 3. The cover can prevent the dust from falling in the hollow sleeve 16, and can prevent the rotary latch 17 and the fixed latch 18 from being exposed to hurt the hand of the medical staff.

Further, as shown in fig. 4, a second spring 6 is provided inside the brake pipe 1, one end of the second spring 6 abuts against and is connected to the top wall of the brake pipe 1, the other end abuts against and is connected to the top end of the ground brake 9, and the wire rope 5 connected to the ground brake 9 passes through the inside of the second spring 6.

The second spring 6 functions to: when the steel wire rope 5 is retracted, the brake part is also retracted into the brake pipe 1, and at the moment, the second spring 6 is compressed, so that the brake part is prevented from directly impacting the top wall of the brake pipe 1, and the brake part or the brake pipe 1 is prevented from being damaged; when the steel wire rope 5 is released, the second spring 6 rebounds, and under the assistance of the elastic force of the second spring 6, the braking member can be rapidly ejected out of the braking pipe 1, so that the speed of realizing braking by the braking member is increased to a certain extent.

Specifically, in the present embodiment, as shown in fig. 5, the side of the ground brake 9 has a stepped notch where the wheel brake 7 is located, the end of the wheel brake 7 is hinged with the ground brake 9 at the step, the side of the ground brake 9 is connected with the first spring 8 near the hinge point, the other end of the first spring 8 is connected with the wheel brake 7, and the connection point is near the hinge end of the wheel brake 7. At the hinge point of the side portion of the ground brake 9, the wheel brake 7 can be rotated counterclockwise by 90 degrees around the hinge point after being bounced off by the first spring 8 due to the step, and the state perpendicular to the ground brake 9 is maintained, so that the wheel brake can be more easily inserted into the wheel.

In other embodiments, the wheel brake 7 may be installed inside the ground contact brake 9, and after the ground contact brake 9 is ejected, the wheel brake 7 horizontally protrudes out of the ground contact brake 9, maintains a state perpendicular to the ground contact brake 9, and protrudes into the wheel, so that the wheel is braked at a reduced speed.

Furthermore, the steel wire rope 5 is covered with a flexible soft conduit 2, and the flexible soft conduit 2 can be made of stainless steel. During the use of the emergency brake device, the flexible conduit 2 can fix and protect the steel cable 5, and can prevent medical staff or patients from being cut by the steel cable 5.

In this embodiment, as shown in fig. 3, the emergency brake device for a medical bed cart further comprises an actuating tube 14, wherein the side of the actuating tube 14 has an opening, and the diameter of the opening is matched with that of the hollow sleeve 16, so that the hollow sleeve 16 can be inserted into the opening. The interior of the activation tube 14 is provided with a shutter 15, the shutter 15 being located opposite the above-mentioned opening and offset by a certain distance. The shielding plate 15 plays a certain guiding role in releasing and retracting the steel wire rope 5, so that the steel wire rope 5 moves according to a set track.

In the embodiment, as shown in fig. 6 and 7, the emergency brake device of the medical bed trolley is detachably mounted with the medical bed trolley through a fixing device, a pressing device can be connected with a handle of the medical bed trolley, and meanwhile, a brake pipe 1 is connected with a tire of the medical bed trolley. The fixing device comprises a fixing ring 20 and a fixing screw 19, wherein the fixing ring 20 is a circular ring structure formed by connecting two separated semicircular structures through the fixing screw 19. The fixing ring 20 is welded with the pressing device and the brake pipe 1 respectively. In addition, the fixing screw 19 can be screwed or loosened to realize the mounting or dismounting of the emergency braking device of the medical bed trolley, and the emergency braking device can be recycled and also can be suitable for various types of medical bed trolleys.

It will be appreciated that the fixed height of the brake pipe 1 allows the ground engaging brake 9 to contact the ground after release without interfering with the release of the wheel brakes 7.

The application also provides an embodiment of a braking method, which can be used for the emergency braking device and the braking method of the medical bed trolley, and the braking method comprises the following steps:

firstly, the button 3 is pressed, the brake latch 10 moves downwards for a certain distance and then is in butt joint with the rotating latch 12, the brake latch 10 and the rotating latch 12 continue to move downwards together, and the winding rod 4 also moves downwards along with the brake latch 10 and the rotating latch 12. The joint to be butted moves below the bump 11, and the pressing is stopped.

In a second step, the button 3 is released and the third spring 13 springs back, under the effect of which the braking latch 10 moves upwards together with the rotary latch 12 and the winding rod 4 moves upwards, moving inside the hollow sleeve 16. At this time, the wire rope 5 is released from the winding rod 4. Under the action of the elastic force of the second spring 6, the braking part extends out of the brake pipe 1, the ground contact brake 9 is contacted with the ground, the wheel brake 7 is ejected out and rotates for 90 degrees around a hinge point, and the wheel brake is kept in a state of being vertical to the ground contact brake 9 and extends into the wheel.

At this time, the ground contact brake 9 generates a large friction force with the bottom surface, the wheel brake 7 is stuck on the wheel, and the medical bed vehicle is braked.

After the series of operations are completed, the medical bed vehicle is kept in a braking state, and emergency situations such as uncontrolled sliding, slope slipping up and down, and the like are effectively solved. In order to restore the normal movement of the hospital bed, the present embodiment also provides an optimized method, i.e. a method of retracting the brake member to the brake pipe 1. The method comprises the following steps:

after the braking operation is finished, the button 3 is pressed again, the braking latch 10 moves downwards to be in butt joint with the rotating latch 12, the braking latch 10 and the rotating latch 12 continue to move downwards together, and the winding rod 4 also moves downwards along with the downward movement and extends out of the hollow sleeve 16. At this time, the projection 11 enters the groove of the outer wall of the detent latch 10.

And then the button 3 is rotated clockwise, the braking latch 10 drives the bump 11 to rotate clockwise, so as to drive the inner wall 161 of the hollow sleeve 16 and the winding rod 4 to rotate therewith, and the steel wire rope 5 is continuously withdrawn and wound on the outer wall of the winding rod 4. Under the tension of the wire rope 5, the ground brake 9 moves upward, and the wheel brake 7 rotates clockwise around the hinge point and returns to the initial state.

When the brake to be braked is retracted into the brake pipe 1, the button 3 is released, and the rotating latch 17 is clamped by the fixed latch 18, so that the counterclockwise rotation is avoided, and the reverse rotation of the winding rod 4 caused by the acting force of the steel wire rope 5 is avoided.

In other embodiments, the button 3, the rotary latch 17 and the fixed latch 18 may be manually set to have an initial direction, which may be clockwise or counterclockwise.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.