Lifting and transfer device

Abstract

The utility model provides a kind of lifting transfer device, including chassis and lifting frame;Chassis front end is equipped with vertical center pole;Lifting frame is located above chassis, and lifting frame includes vertical lifting pole, and lifting pole is connected between center pole by two parallel strip connectors, so that parallelogram is formed between lifting pole, center pole and two strip connectors;Two ends of strip connector are respectively hinged with lifting pole and center pole, and push-pull rod is equipped between the strip connector below and center pole, so that lifting pole can be vertically moved relative to center pole under the drive of push-pull rod;Lifting pole is connected with cross bar, and two ends of cross bar extend horizontally backward to form elbow support rod.The lifting transfer device provided by the utility model can help disabled or people with difficulty in movement to convert between sitting and standing positions and help them to move independently, providing support for daily activities.

Description

Technical Field

[0001] This utility model relates to a mobility assistance device, and more particularly to a lifting and transfer device for people with disabilities or limited mobility. Background Technology

[0002] Traditional mobility aids, such as manual or electric wheelchairs, are limited to a sitting position and are not suitable for standing or walking. Standing wheelchairs or standing tables on the market are typically complex and bulky, making them unsuitable for easy movement while standing. Suspended transfer lifts are also available, allowing movement from beds to wheelchairs or toilets, but require assistance and do not support independent movement. Therefore, there is a need for an improved technical solution that addresses the shortcomings of the existing technologies. Utility Model Content

[0003] The purpose of this invention is to provide a lifting and transfer device that can help people with disabilities or limited mobility switch between sitting and standing positions and help them move independently, providing support for daily activities.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A lifting and transfer device includes a movable chassis and a lifting frame; The chassis has a vertical center rod at the front end; The lifting frame is located above the chassis. The lifting frame includes a vertical lifting rod, which is connected to the central rod by two parallel strip-shaped connectors, forming a parallelogram between the lifting rod, the central rod, and the two strip-shaped connectors. The two ends of each strip-shaped connector are hinged to the lifting rod and the central rod, respectively. A push-pull rod is provided between the lower strip-shaped connector and the central rod, allowing the lifting rod to move vertically relative to the central rod under the drive of the push-pull rod. The lifting rod is connected to a horizontal bar, the two ends of which extend horizontally backward to form elbow support rods.

[0005] According to one embodiment of the present invention, the bottom end of the lifting rod is provided with a saddle.

[0006] According to one embodiment of the present invention, the saddle and the lifting rod are inserted together, and a plurality of corresponding adjustment holes are provided between the saddle and the lifting rod, and they are connected by adjustment bolts.

[0007] According to one embodiment of the present invention, the elbow support rod is provided with a suspension hook.

[0008] According to one embodiment of the present invention, the elbow support rod has a vertical connecting rod at its end, and the connecting rod is pivotally connected to the elbow support rod; the top of the connecting rod has a chest support rod, which is U-shaped and has two chest support rods with their openings facing each other to form a chest support space; the two ends of the chest support rod are also provided with vertical push rods; a rotation locking device is provided between the connecting rod and the elbow support rod. The rotary locking device includes a horizontal fixing pin and a spring pin; the fixing pin and the spring pin are located at the bottom of the connecting rod, and the fixing pin is located above the spring pin; the elbow support rod has a vertically penetrating sleeve at its end, and the top of the sleeve has a U-shaped notch corresponding to the fixing pin; the fixing pin abuts against the top end face of the sleeve, and the spring pin abuts against the bottom end face of the sleeve. Alternatively, the rotary locking device includes a horizontal fixing pin and a spring pin; the fixing pin and the spring pin are located at the bottom of the connecting rod, and the fixing pin is located above the spring pin; the elbow support rod has a vertically penetrating sleeve at its end, and the bottom of the sleeve has a pin hole corresponding to the spring pin; the fixing pin abuts against the top end face of the sleeve.

[0009] According to one embodiment of the present invention, the rear end of the chassis is provided with two straight wheels, and the front end of the chassis is provided with two omnidirectional wheels.

[0010] According to one embodiment of the present invention, a brake is provided on the straight wheel, a brake handle is provided on the crossbar, and the brake cable is connected to the brake handle.

[0011] According to one embodiment of the present invention, the chassis is U-shaped with an opening facing rearward; a pedal is provided inside the chassis, and the front end of the pedal is hinged to the front end of the chassis, so that the pedal can be flipped upward.

[0012] According to one embodiment of the present invention, the chassis includes a front frame and a rear frame, with front wheels on both sides of the front frame and rear wheels on both sides of the rear frame; the middle of the rear end of the front frame and the middle of the front end of the rear frame are connected by a pivot, so that the front frame and the rear frame can rotate around the pivot.

[0013] According to one embodiment of the present invention, the rear ends of the front frame are provided with rearwardly extending spring plates on both sides, and the ends of the spring plates are located at the bottom or top of the front end of the rear frame. Alternatively, the front end of the rear frame is provided with forward-extending spring tabs on both sides, the ends of which are located at the bottom or top of the rear end of the front frame; Alternatively, the front frame has rearwardly extending insert rods on both sides of its rear end, and the rear frame has insert holes corresponding to the insert rods at its front end, with the inner diameter of the insert holes being larger than the diameter of the insert rods; the insert rods are located inside the insert holes, and an elastic buffer is filled between the insert rods and the insert holes; Alternatively, the front end of the rear frame has two forward-extending inserts on both sides, and the rear end of the front frame has a corresponding insertion hole, the inner diameter of which is larger than the diameter of the insert; the insert is located in the insertion hole, and an elastic buffer is filled between the insert and the insertion hole.

[0014] According to one embodiment of the present invention, the push-pull rod is an electric push-pull rod, the chassis is provided with a drive motor, and the drive motor is connected to the front wheel and / or the rear wheel; the crossbar is provided with a controller connected to the electric push-pull rod and the drive motor; And / or, the crossbar is provided with a vertical handrail; And / or, the rear frame is U-shaped with an opening facing rearward; a pedal is provided inside the rear frame, and the front end of the pedal is hinged to the front end of the rear frame, so that the pedal can be flipped upward.

[0015] According to one embodiment of the present invention, the strip-shaped connector located at the top is a flexible rope; And / or, the central rod includes an upper rod and a lower rod that are inserted into each other, and a plurality of corresponding positioning holes are provided between the upper rod and the lower rod, and positioning pins are provided in the positioning holes; And / or, the front end and / or rear end of the chassis are provided with outwardly extending stabilizer bars, and the stabilizer bars are provided with stabilizer wheels at their ends.

[0016] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: The lifting and transfer device provided by this utility model allows the user to sit on the saddle, supporting their elbows on the elbow support rod, and control the push-pull rod to drive the lifting rod upwards, allowing the user to stand. Then, a movable chassis enables the user to move independently. When the user wants to change from a standing to a sitting position, they simply reverse the operation of the push-pull rod. The parallelogram structure ensures that the lifting rod is always parallel to the vertical center rod (i.e., the lifting rod always remains vertical), maintaining the user's balance. This lifting and transfer device can help people with disabilities or limited mobility switch between sitting and standing positions and assist them in independent movement, providing support for daily activities. Attached Figure Description

[0017] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an undue limitation of this utility model. Wherein: Figure 1 A schematic diagram of the lifting and transfer device provided by this utility model; Figure 2 An enlarged schematic diagram of the lifting frame of the lifting and transfer device provided by this utility model; Figure 3 An enlarged schematic diagram of the lifting frame at another angle of the lifting and transferring device provided by this utility model; Figure 4 A cross-sectional schematic diagram of the connecting rod of the lifting and transferring device provided by this utility model; Figure 5 A schematic diagram showing the connection between the connecting rod and the sleeve of the lifting and transferring device provided by this utility model; Figure 6 A schematic diagram showing the connection between the connecting rod and the sleeve in another embodiment of the lifting and transferring device provided by this utility model; Figure 7 An enlarged schematic diagram of the chassis of the lifting and transfer device provided by this utility model; Figure 8 An enlarged schematic diagram of the chassis from another angle of the lifting and transfer device provided by this utility model; Figure 9 This is an enlarged schematic diagram of the lifting frame of the lifting and transferring device provided in another embodiment of the present invention; Figure 10 This is a schematic diagram of the lifting and transferring device provided in another embodiment of the present invention. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation of the present invention and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present invention without departing from the scope or spirit of the invention. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present invention encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0019] In the description of this utility model, the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are only used to distinguish different components. Words such as "comprising" or "including" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects. Terms such as "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected," "linked," and "set up" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a direct connection or an indirect connection through intermediate components; a wired connection, a radio connection, or a wireless communication signal connection. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0020] like Figures 1-3 As shown, this utility model provides a lifting and transfer device, including a movable chassis 1 and a lifting frame 2. The chassis 1 has a vertical central rod 11 at its front end. The lifting frame 2 is located above the chassis 1 and includes a vertical lifting rod 21. The lifting rod 21 is connected to the central rod 11 by two parallel strip-shaped connectors 22, forming a parallelogram between the lifting rod 21, the central rod 11, and the two strip-shaped connectors 22. The two ends of the strip-shaped connectors 22 are hinged to the lifting rod 21 and the central rod 11, respectively. A push-pull rod 12 is provided between the lower strip-shaped connector 22 and the central rod 11. The two ends of the push-pull rod 12 are hinged to the central rod 11 and the lower strip-shaped connector 22, allowing the lifting rod 21 to move vertically relative to the central rod 11 under the drive of the push-pull rod 12. The lifting rod 21 is connected to a horizontal bar 23, the two ends of which extend horizontally backward to form elbow support rods 24.

[0021] In use, the lifting and transfer device provided by this utility model allows the user to sit on the saddle 211, supporting their elbows on the elbow support rod 24, and control the push-pull rod 12 to drive the lifting rod 21 to lift, allowing the user to stand. Then, the movable chassis 1 enables the user to move independently. The user can also operate the brake handle to slow down or lock the chassis wheels. When the user wants to change from a standing to a sitting position, they simply reverse the operation of the push-pull rod 12. The parallelogram structure ensures that the lifting rod 21 is always parallel to the vertical center rod 11 (i.e., the lifting rod 21 always remains vertical), maintaining the user's balance. The lifting and transfer device provided by this utility model can help disabled or mobility-impaired individuals switch between sitting and standing positions and assist them in independent movement, providing support for daily activities.

[0022] In one embodiment of this utility model, a saddle 211 is provided at the bottom end of the lifting rod 21. In this embodiment, the saddle 211 and the lifting rod 21 are connected by an L-shaped saddle rod 212. The saddle 211 provides support to bear the user's weight, providing lifting function and weight support function in standing or sitting positions, facilitating operation, and lowering the center of gravity to avoid tipping and improve comfort when driving in a lowered sitting position. Furthermore, the saddle 211 and the lifting rod 21 are connected by the saddle rod 212, and the saddle 211 has multiple corresponding adjustment holes between the saddle rod 212 and the lifting rod 21, which are connected by adjusting bolts, so that the height of the saddle 211 can be adjusted.

[0023] To protect and support the user's chest, such as Figures 1-3 As shown, in one embodiment of this utility model, the elbow support rod 24 has a vertical connecting rod 25 at its end, and the connecting rod 25 is pivotally connected to the elbow support rod 24. The top of the connecting rod 25 has a chest support rod 26, which is U-shaped, and the two chest support rods 26 have openings facing each other, forming a chest support space. The user's chest is located within this chest support space and is protected and supported by the chest support rods 26 on both sides.

[0024] Furthermore, to prevent the chest support rod 26 from wobbling, a rotation locking device is provided between the connecting rod 25 and the elbow support rod 24.

[0025] like Figures 4-5As shown, in one embodiment of this utility model, the rotary locking device includes a horizontal fixing pin 251 and a spring pin 252. The fixing pin 251 and the spring pin 252 are located at the bottom of the connecting rod 25, with the fixing pin 251 positioned above the spring pin 252. The elbow support rod 24 has a vertically penetrating sleeve 241 at its end, and the top of the sleeve 241 has a U-shaped notch 242 corresponding to the fixing pin 251. The fixing pin 251 abuts against the top end face of the sleeve 241. When rotated to the correct position, the fixing pin 251 falls into the U-shaped notch 242, limiting the rotation and downward displacement of the connecting rod 25. The spring pin 252 abuts against the bottom end face of the sleeve 241, limiting the upward displacement of the connecting rod 25.

[0026] like Figure 6 As shown, in another embodiment of this utility model, the rotary locking device includes a horizontal fixing pin 251 and a spring pin 252. The fixing pin 251 and the spring pin 252 are located at the bottom of the connecting rod 25, with the fixing pin 251 positioned above the spring pin 252. The elbow support rod 24 has a vertically penetrating sleeve 241 at its end. The bottom of the sleeve 241 has a pin hole 243 corresponding to the spring pin 252. When rotated to the correct position, the spring pin 252 automatically inserts into the pin hole 243, limiting the vertical and rotational displacement of the connecting rod 25. The fixing pin 251 abuts against the top end face of the sleeve 241, further limiting the downward displacement of the connecting rod 25 and preventing excessive force concentration on the spring pin 251, which could lead to damage.

[0027] like Figures 1-3 As shown, in one embodiment of the present invention, the two ends of the chest support rod 26 are also provided with vertical push rods 261. After the user enters the chest support space, after touching the push rod 261 at the front end, the two push rods 261 at the rear end close together in the middle, completely surrounding the user and preventing the user from falling backward.

[0028] In one embodiment of this utility model, the chassis 1 has two wheels at each of its front and rear ends for movement. However, when the road surface is uneven, one wheel may become suspended in the air, causing the chassis to be unstable. To solve the above problem, such as Figure 1 , Figure 7 , Figure 8 As shown, in one embodiment of this utility model, the chassis 1 includes a front frame 13 and a rear frame 14. Front wheels 131 are provided on both sides of the front frame 13, and rear wheels 141 are provided on both sides of the rear frame 14. The front wheels 131 and rear wheels 141 are preferably swivel wheels to improve maneuverability. The rear center of the front frame 13 and the front center of the rear frame 14 are connected by a pivot 15, allowing the front frame 13 and the rear frame 14 to rotate around the pivot 15.

[0029] To prevent excessive rotation between the front frame 13 and the rear frame 14, such as Figure 7 As shown, in one embodiment of this utility model, the front frame 13 has rearwardly extending spring plates 16 on both sides of its rear end, with the ends of the spring plates 16 located at the bottom or top of the front end of the rear frame 14. Alternatively, the rear frame 14 has forward extending spring plates on both sides of its front end, with the ends of the spring plates located at the bottom or top of the rear end of the front frame 13. When the front frame 13 and the rear frame 14 rotate excessively, the spring plates will limit the rotation angle between them.

[0030] To prevent excessive rotation between the front frame 13 and the rear frame 14, in another embodiment of this invention, the front frame 13 has rearwardly extending inserts (not shown in the figure) on both sides of its rear end, and the rear frame 14 has a corresponding insertion hole (not shown in the figure) at its front end, the inner diameter of which is larger than the diameter of the insert. The insert is located within the insertion hole, and an elastic buffer, such as rubber, is filled between the insert and the insertion hole. Alternatively, the rear frame 14 has forward extending inserts (not shown in the figure) on both sides of its front end, and the front frame 13 has a corresponding insertion hole (not shown in the figure) at its rear end, the inner diameter of which is larger than the diameter of the insert. The insert is located within the insertion hole, and an elastic buffer, such as rubber, is filled between the insert and the insertion hole. When the front frame 13 and the rear frame 14 rotate excessively, the insertion hole and the elastic buffer inside it can limit the movement of the insert, thereby limiting the rotation angle between them.

[0031] like Figures 1-3 As shown, in order to achieve the movement and control of the chassis 1, in one embodiment of this utility model, the push-pull rod 12 is an electric push-pull rod, and the chassis 1 is equipped with a drive motor 3, which is connected to the front wheel and / or rear wheel through a transmission mechanism (e.g., gear transmission). The crossbar 23 is equipped with a controller 27 connected to the electric push-pull rod and the drive motor 3. In this embodiment, the drive motor 3 and its transmission structure are located at the front end of the chassis 1. Further, to prevent the chassis 1 from tipping over, such as... Figure 1 , Figure 7 , Figure 8 As shown, the chassis 1 has outwardly extending stabilizer bars 17 at its front end and / or rear end, and stabilizer wheels 171 at the end of the stabilizer bars 17. When the drive motor 3 and its transmission structure are located at the front end of the chassis 1, the stabilizer bars 17 are located at the front end of the chassis 1 and extend forward.

[0032] To help users maintain their balance, such as Figures 1-3 As shown, in one embodiment of this utility model, the crossbar 23 is provided with a vertical handrail 28 for the user to hold.

[0033] The user can stand on the chassis 1 and move by controlling the aforementioned drive motor 3. Alternatively, the user can move along with the entire device; in this embodiment, for example... Figure 1 , Figure 7 , Figure 8 As shown, the rear frame 14 is U-shaped with an opening facing rearward, allowing the user's feet to be positioned inside the rear frame 14. A footrest 4 is located inside the rear frame 14, with its front end hinged to the front end of the rear frame 14, allowing the footrest 4 to be flipped upwards. When the footrest 4 is flipped upwards, the opening of the rear frame 14 is exposed, allowing the user to stand and walk.

[0034] In one embodiment of this utility model, of the two strip-shaped connectors 22, the upper strip-shaped connector is a flexible rope, such as a steel cable or steel bar. The lower strip-shaped connector is a rigid connecting rod. This structure allows the lifting rod 21 to rotate forward relative to the strip-shaped connector 22 below, improving the user's lifting experience. At the same time, the flexible rope can limit the backward rotation of the lifting rod 21, keeping the lifting rod 21 in a vertical state.

[0035] To adjust the height of the center rod 11, such as Figure 1 As shown, in one embodiment of the present invention, the central rod 11 includes an upper rod 111 and a lower rod 112 that are inserted into each other. A plurality of corresponding positioning holes 113 are provided between the upper rod 111 and the lower rod 112, and a positioning pin 114 is provided in the positioning hole 113.

[0036] To facilitate the connection of the sling system, such as Figure 9 As shown, in one embodiment of the present invention, the elbow support rod 24 is provided with a hanging hook 244 at the bottom.

[0037] In one embodiment of this invention, the bottom of the central rod 11 is also provided with two C-shaped shin pads (not shown in the figure), corresponding to the user's shinbone. These shin pads can be adjusted up and down and forward and backward to adapt to the user's height and prevent knee bending when standing.

[0038] In one embodiment of this utility model, the push-pull rod 12 can be driven by a hydraulic cylinder or a linear actuator.

[0039] like Figure 10As shown, in one embodiment of this utility model, the chassis 1 has two straight wheels 18 at its rear end and two omnidirectional wheels 19 at its front end. Further, it may not have a drive device, serving only to assist the user in walking. In this case, the chassis 1 is U-shaped with its opening facing rearward. A pedal 4 is located inside the chassis 1, with its front end hinged to the front end of the chassis 1, allowing the pedal 4 to be flipped upwards. The user can stand on the pedal 4 and be propelled by others, or the pedal 4 can be flipped upwards, allowing the user to stand within the U-shaped opening of the chassis 1 and move independently with the assistance of a lifting and transfer device. Brakes are provided on the straight wheels 18, and a brake handle 29 is provided on the crossbar 23. The brake cable is connected to the brake handle 29 to control the travel speed or completely lock the straight wheels 18. In this embodiment, the brake handle 29 is located on the handrail 28 for easy operation.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lifting and transferring device, characterized in that, Includes a movable chassis and a lifting frame; The chassis has a vertical center rod at the front end; The lifting frame is located above the chassis. The lifting frame includes a vertical lifting rod, which is connected to the central rod by two parallel strip-shaped connectors, forming a parallelogram between the lifting rod, the central rod, and the two strip-shaped connectors. The two ends of each strip-shaped connector are hinged to the lifting rod and the central rod, respectively. A push-pull rod is provided between the lower strip-shaped connector and the central rod, allowing the lifting rod to move vertically relative to the central rod under the drive of the push-pull rod. The lifting rod is connected to a horizontal bar, the two ends of which extend horizontally backward to form elbow support rods.

2. The lifting and transferring device according to claim 1, characterized in that, The bottom end of the lifting rod is provided with a saddle.

3. The lifting and transferring device according to claim 2, characterized in that, The saddle and the lifting rod are inserted together, and multiple corresponding adjustment holes are provided between the saddle and the lifting rod, which are connected by adjustment bolts.

4. The lifting and transferring device according to claim 1, characterized in that, The elbow support rod is equipped with a suspension hook.

5. The lifting and transferring device according to claim 1, characterized in that, The elbow support rod has a vertical connecting rod at its end, and the connecting rod is pivotally connected to the elbow support rod; the top of the connecting rod has a chest support rod, which is U-shaped and has two chest support rods with their openings facing each other to form a chest support space; the two ends of the chest support rod also have vertical push rods; a rotation locking device is provided between the connecting rod and the elbow support rod. The rotary locking device includes a horizontal fixing pin and a spring pin; the fixing pin and the spring pin are located at the bottom of the connecting rod, and the fixing pin is located above the spring pin; the elbow support rod has a vertically penetrating sleeve at its end, and the top of the sleeve has a U-shaped notch corresponding to the fixing pin; the fixing pin abuts against the top end face of the sleeve, and the spring pin abuts against the bottom end face of the sleeve. Alternatively, the rotary locking device includes a horizontal fixing pin and a spring pin; the fixing pin and the spring pin are located at the bottom of the connecting rod, and the fixing pin is located above the spring pin; the elbow support rod has a vertically penetrating sleeve at its end, and the bottom of the sleeve has a pin hole corresponding to the spring pin; the fixing pin abuts against the top end face of the sleeve.

6. The lifting and transferring device according to any one of claims 1 to 5, characterized in that, The chassis has two straight wheels at the rear and two omnidirectional wheels at the front.

7. The lifting and transferring device according to claim 6, characterized in that, The chassis is U-shaped with an opening facing rearward; a pedal is provided inside the chassis, and the front end of the pedal is hinged to the front end of the chassis, so that the pedal can be flipped upward. And / or, the straight wheel is equipped with a brake, the crossbar is equipped with a brake handle, and the brake cable is connected to the brake handle.

8. The lifting and transferring device according to any one of claims 1 to 5, characterized in that, The chassis includes a front frame and a rear frame. Front wheels are provided on both sides of the front frame, and rear wheels are provided on both sides of the rear frame. The middle of the rear end of the front frame and the middle of the front end of the rear frame are connected by a pivot, so that the front frame and the rear frame can rotate around the pivot.

9. The lifting and transferring device according to claim 8, characterized in that, The front frame has rearwardly extending spring plates on both sides of its rear end, and the ends of the spring plates are located at the bottom or top of the front end of the rear frame. Alternatively, the front end of the rear frame is provided with forward-extending spring tabs on both sides, the ends of which are located at the bottom or top of the rear end of the front frame; Alternatively, the front frame has rearwardly extending insert rods on both sides of its rear end, and the rear frame has insert holes corresponding to the insert rods at its front end, with the inner diameter of the insert holes being larger than the diameter of the insert rods; the insert rods are located inside the insert holes, and an elastic buffer is filled between the insert rods and the insert holes; Alternatively, the front end of the rear frame has two forward-extending inserts on both sides, and the rear end of the front frame has a corresponding insertion hole, the inner diameter of which is larger than the diameter of the insert; the insert is located in the insertion hole, and an elastic buffer is filled between the insert and the insertion hole.

10. The lifting and transferring device according to claim 8, characterized in that, The push-pull rod is an electric push-pull rod, the chassis is equipped with a drive motor, and the drive motor is connected to the front wheel and / or the rear wheel; the crossbar is equipped with a controller connected to the electric push-pull rod and the drive motor; And / or, the crossbar is provided with a vertical handrail; And / or, the rear frame is U-shaped with an opening facing rearward; a pedal is provided inside the rear frame, and the front end of the pedal is hinged to the front end of the rear frame, so that the pedal can be flipped upward.

11. The lifting and transferring device according to any one of claims 1 to 5, characterized in that, The strip-shaped connector located at the top is a flexible rope; And / or, the center rod includes an upper rod and a lower rod that are inserted into each other, and a plurality of corresponding positioning holes are provided between the upper rod and the lower rod, and positioning pins are provided in the positioning holes; And / or, the front end and / or rear end of the chassis are provided with outwardly extending stabilizer bars, and the stabilizer bars are provided with stabilizer wheels at their ends.

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