Roll-over device

Abstract

The present invention relates to a roll-over device, comprising a rack, a roll-over supporting plate, a first driving mechanism, and a second driving mechanism. The roll-over supporting plate and the rack are connected to each other by means of a plurality of first swing arms and a plurality of second swing arms; first ends of the first swing arms are hingedly connected to the left side of the rack, and second ends of the first swing arms are hingedly connected to the right side of the roll-over supporting plate; first ends of the second swing arms are hingedly connected to the right side of the rack, and second ends of the second swing arms are hingedly connected to the left side of the turnover supporting plate. The first driving mechanism is in transmitting connection with the first swing arms and is used for driving the first swing arms to rotate around a hinge shaft between the first swing arms and the rack. The second driving mechanism is in transmitting connection with the second swing arms and is used for driving the second swing arms to rotate around a hinge shaft between the second swing arms and the rack. According to the roll-over device of the present invention, during switching between roll-over in a first direction and roll-over in a second direction, there is no need to manually change a connecting structure of the roll-over device, thereby facilitating operation.

Description

A turning device Technical Field

[0001] The present invention relates to the technical field of medical auxiliary equipment, and in particular to a turning device. Background Art

[0002] Some bedridden patients, unable to turn over for extended periods, experience not only physical discomfort but also the development of bedsores and other ailments. Turning patients over manually is essential. Manually turning patients over is not only time-consuming and laborious, but also requires the collaboration of multiple caregivers when the patient is obese or requires simultaneous movement of multiple body parts. While some nursing beds on the market offer this so-called turning function, they also have significant shortcomings.

[0003] The Chinese invention patent application with publication number CN105476775A discloses a turning mechanism for a nursing bed, which achieves turning by driving the left or right bed board to flip. The bed board rotation axis is in the middle of the entire bed, and bedridden patients usually lie in the center of the bed. When the bed board flips, it does not push the entire patient to flip, but only the left or right half of the patient's body flips, which can easily cause the patient's body to be squeezed hard and the body to be pushed incorrectly, making it very likely that the patient will not be able to turn over.

[0004] A Chinese invention patent with announcement number CN103211689B discloses a multifunctional nursing bed, whose seat frame can be tilted to the left or right relative to the box as a whole, but the left and right sides of the seat frame are connected to the box through locating pins. When the electric push rod pushes the seat frame to tilt to the left, it is necessary to manually remove the locating pins connected to the right side of the seat frame and the right side of the box so that the seat frame can be flipped to the left relative to the box, which is inconvenient to operate.

[0005] In summary, how to design a turning device that can protect the patient's body from strong squeezing and quickly achieve the function of turning left and right is a technical problem that needs to be solved urgently by those skilled in the art.

[0006] Summary of the Invention

[0007] In view of the defects in the prior art, the technical problem to be solved by the present invention is to provide a turning device, the turning support plate of which has the function of turning in two directions and is easy to operate.

[0008] To solve the above technical problems, the present invention provides a turning device, including a frame, a turning pallet, a first driving mechanism and a second driving mechanism; the turning pallet and the frame are connected by a plurality of first swing arms and a plurality of second swing arms, the first end of the first swing arm is hinged to the left side of the frame, the second end of the first swing arm is hinged to the right side of the turning pallet, the first end of the second swing arm is hinged to the right side of the frame, and the second end of the second swing arm is hinged to the left side of the turning pallet; the first driving mechanism is transmission-connected to the first swing arm, for driving the first swing arm to rotate around the hinge axis between it and the frame, so that the turning pallet switches between its closed state and the first open state; the second driving mechanism is transmission-connected to the second swing arm, for driving the second swing arm to rotate around the hinge axis between it and the frame, so that the turning pallet switches between its closed state and the second open state.

[0009] In the present invention, when the first driving mechanism is working, the first swing arm rotates around the hinge axis with the left side of the frame. At the same time, since the second end of the first swing arm is hinged to the right side of the turning pallet, the turning pallet will be driven to rotate synchronously from its closed state to its first open state during the rotation of the first swing arm, pushing the patient to turn over in the first direction. During this process, since the left side of the turning pallet and the second end of the second swing arm are hinged, the second swing arm is not affected by the rotation of the turning pallet; when the second driving mechanism is working, the second swing arm rotates around the hinge axis with the right side of the frame. At the same time, since the second end of the second swing arm is hinged to the left side of the turning pallet, the turning pallet will be driven to rotate synchronously from its closed state to its second open state during the rotation of the second swing arm, pushing the patient to turn over in the second direction. During this process, since the right side of the turning pallet is hinged to the second end of the first swing arm, the first swing arm is not affected by the rotation of the turning pallet. It can be seen that the turning support plate of the present invention can have the function of turning over in two directions, and because the turning support plate is an integral design, the patient will not be squeezed hard during the turning process. In addition, when the turning device of the present invention switches between turning over in the first direction and turning over in the second direction, there is no need to manually change the connection structure of the turning device, and the operation is convenient.

[0010] Preferably, the first driving mechanism and the second driving mechanism both include a driving member and a power supply device; the lower part of the driving member is hinged to the frame, and the power supply device is transmission connected to the driving member to drive the driving member to rotate around the hinge axis between it and the frame; the upper part of the driving member of the first driving mechanism is transmission connected to the first swing arm, and the upper part of the driving member of the second driving mechanism is transmission connected to the second swing arm.

[0011] Preferably, the driving member includes a rotating shaft that rotates with the frame, and a plurality of driving arms are fixed on the rotating shaft; in the first driving mechanism, the plurality of driving arms are connected one-to-one with the plurality of first swing arms; in the second driving mechanism, the plurality of driving arms are connected one-to-one with the plurality of second swing arms.

[0012] Preferably, the driving member also includes a connecting rod, and the end of the driving arm away from the rotating shaft is hinged to the connecting rod; in the first driving mechanism, the end of the connecting rod away from the driving arm is hinged to the corresponding first swing arm; in the second driving mechanism, the end of the connecting rod away from the driving arm is hinged to the corresponding second swing arm.

[0013] Preferably, the power supply device includes a telescopic cylinder and a transmission member, the cylinder barrel end of the telescopic cylinder is hinged to the frame, the cylinder rod end of the telescopic cylinder is hinged to the transmission member, and the end of the transmission member away from the telescopic cylinder is connected to the corresponding rotating shaft for preventing rotation.

[0014] Preferably, in the first driving mechanism, the cylinder rod end of the telescopic cylinder faces the left side of the frame; and in the second driving mechanism, the cylinder rod end of the telescopic cylinder faces the right side of the frame.

[0015] Preferably, a first limit member and a second limit member are provided on the frame, and when the first limit member abuts against the first swing arm, the first swing arm is located at its initial position, and when the second limit member abuts against the second swing arm, the second swing arm is located at its initial position; when the first swing arm and the second swing arm are both located at their respective initial positions, the turning pallet is located in its closed state; when the turning pallet is located in its closed state, the first swing arm and the hinge axis of the frame and the second swing arm and the hinge axis of the turning pallet are coaxial, and the first swing arm and the hinge axis of the turning pallet and the second swing arm and the hinge axis of the frame are coaxial.

[0016] Preferably, the first limiting member and the second limiting member are both limit switches.

[0017] Preferably, the first limiting member is arranged close to the right side of the rack, and the second limiting member is arranged close to the left side of the rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0019] FIG1 is a schematic structural diagram of a turning device in a closed state according to an embodiment of the present invention;

[0020] FIG2 is a schematic structural diagram of a turning support plate in a first open state according to an embodiment of the present invention;

[0021] FIG3 is a schematic diagram of the connection structure of the first drive mechanism, the second drive mechanism, the first swing arm and the second swing arm in FIG2 ;

[0022] FIG4 is a schematic structural diagram of a turning support plate according to an embodiment of the present invention;

[0023] FIG5 is a schematic structural diagram of a rack according to an embodiment of the present invention.

[0024] Figure markings: 1-frame; 11-first limit member; 12-second limit member; 13-first channel; 14-second channel; 2-turning pallet; 21-first crossbeam; 22-second crossbeam; 3-first driving mechanism; 31-first rotating shaft; 32-first driving arm; 33-first connecting rod; 34-first telescopic cylinder; 35-first transmission member; 4-second driving mechanism; 41-second rotating shaft; 42-second driving arm; 43-second connecting rod; 44-second telescopic cylinder; 45-second transmission member; 5-first swing arm; 51-first give way groove; 6-second swing arm. DETAILED DESCRIPTION

[0025] The following embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0026] It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0027] As shown in Figures 1, 2, 3, 4 and 5, this embodiment provides a turning device, including a frame 1, a turning support plate 2, a first driving mechanism 3 and a second driving mechanism 4.

[0028] The turning plate 2 is connected to the frame 1 via two first swing arms 5 and two second swing arms 6. The first end of the first swing arm 5 is hinged to the left side of the frame 1, and the second end of the first swing arm 5 is hinged to the right side of the turning plate 2. The first end of the second swing arm 6 is hinged to the right side of the frame 1, and the second end of the second swing arm 6 is hinged to the left side of the turning plate 2.

[0029] The first drive mechanism 3 is in transmission connection with the first swing arm 5, and is used to drive the first swing arm 5 to rotate about the hinge axis between the first swing arm 5 and the frame 1, so that the turning plate 2 switches between its closed state and the first open state. The second drive mechanism 4 is in transmission connection with the second swing arm 6, and is used to drive the second swing arm 6 to rotate about the hinge axis between the first swing arm 6 and the frame 1, so that the turning plate 2 switches between its closed state and the second open state.

[0030] To facilitate smooth rotation of the turning pallet 2, in this embodiment, when the turning pallet 2 is in its closed state, the first swing arm 5 and the hinge axis of the frame 1 and the second swing arm 6 and the hinge axis of the turning pallet 2 are coaxial, and the first swing arm 5 and the hinge axis of the turning pallet 2 and the second swing arm 6 and the hinge axis of the frame 1 are coaxial. It should be noted that the closed state of the turning pallet 2 referred to in this embodiment is an ideal closed state. In practice, there may be a slight deviation between the closed state of the turning pallet 2 and the ideal closed state, resulting in a certain deviation between the hinge axis of the first swing arm 5 and the frame 1 and the hinge axis of the second swing arm 6 and the turning pallet 2. There is a certain deviation between the hinge axis of the first swing arm 5 and the frame 1 and the hinge axis of the second swing arm 6 and the frame 1. Therefore, when the turning pallet 2 is in the closed state, there is a slight deviation between the hinge axis of the first swing arm 5 and the frame 1 and the hinge axis of the second swing arm 6 and the turning pallet 2. There is a slight deviation between the hinge axis of the first swing arm 5 and the frame 1 and the hinge axis of the second swing arm 6 and the frame 1, which should also fall within the scope of protection of this application.

[0031] In this embodiment, when the first driving mechanism 3 is working, the first swing arm 5 rotates around the hinge axis with the left side of the frame. At the same time, since the second end of the first swing arm 5 is hinged to the right side of the turning pallet 2, during the rotation of the first swing arm 5, the turning pallet 2 will be driven to rotate synchronously from its closed state to its first open state (refer to Figure 2), pushing the patient to turn over in the first direction. During this process, since the left side of the turning pallet 2 and the second end of the second swing arm 6 are hinged, the second swing arm 6 is not affected by the rotation of the turning pallet 2; when the second driving mechanism 4 is working, the second swing arm 6 rotates around the hinge axis with the right side of the frame 1. At the same time, since the second end of the second swing arm 6 is hinged to the left side of the turning pallet 2, during the rotation of the second swing arm 6, the turning pallet 2 will be driven to rotate synchronously from its closed state to its second open state, pushing the patient to turn over in the second direction. During this process, since the right side of the turning pallet 2 and the second end of the first swing arm 5 are hinged, the first swing arm 5 is not affected by the rotation of the turning pallet 2.

[0032] Furthermore, when in use, the patient lies on the turning device of this embodiment. The integral design of the turning support plate 2 prevents the patient from being squeezed during turning. Specifically, two turning devices of this embodiment can be used simultaneously, one on the back and one on the buttocks, respectively, to facilitate smoother turning. During installation, the device can be used in conjunction with a conventional bed frame, with a central cavity provided to accommodate the turning device, thus giving the conventional bed a turning function.

[0033] Furthermore, the first drive mechanism 3 includes a first drive member and a first power supply device. The lower portion of the first drive member is hinged to the frame 1, and the first power supply device is in driving connection with the first drive member to drive the first drive member to rotate about the hinge axis between the first drive member and the frame 1; the upper portion of the first drive member is in driving connection with the first swing arm 5.

[0034] The first driving member includes a first rotating shaft 31, a first driving arm 32, and a first connecting rod 33. The first rotating shaft 31 is located at the bottom of the first driving member and is rotatably engaged with the frame 1. The first rotating shaft 31 is fixed with two first driving arms 32. The ends of the two first driving arms 32 away from the first rotating shaft 31 are hinged to the first connecting rod 33. The ends of the first connecting rods 33 away from the first driving arms 32 are hinged to the corresponding first swing arms 5.

[0035] The above-mentioned first power supply device includes a first telescopic cylinder 34 and a first transmission member 35. The cylinder barrel end of the first telescopic cylinder 34 is hinged to the frame 1, and the cylinder rod end of the first telescopic cylinder 34 is hinged to the first transmission member 35. The end of the first transmission member 35 away from the first telescopic cylinder 34 is connected to the first rotating shaft 31 for preventing rotation.

[0036] When the first driving mechanism 3 is working, the cylinder rod end of the first telescopic cylinder 34 retracts, driving the first transmission member 35 to rotate a corresponding angle. Since the first transmission member 35 and the first rotating shaft 31 are fixedly connected, the first rotating shaft 31 is synchronously rotated to a corresponding angle under the drive of the first transmission member 35, and synchronously drives the two first driving arms 32 fixedly connected to the first rotating shaft 31 to rotate a corresponding angle, and then drives the first swing arm 5 to rotate and open via the first connecting rod 33, so that the turning pallet 2 pushes the patient to turn over in the first direction.

[0037] In this embodiment, the second driving mechanism 4 and the first driving mechanism 3 have the same structural principle, and the only difference is the installation position.

[0038] The second driving mechanism 4 also correspondingly includes a second driving member and a second power providing device. The lower part of the second driving member is hinged to the frame 1, and the second power providing device is transmission connected to the second driving member to drive the second driving member to rotate around the hinge axis between it and the frame 1; the upper part of the second driving member is transmission connected to the second swing arm 6.

[0039] The second driving member includes a second rotating shaft 41, a second driving arm 42, and a second connecting rod 43. The second rotating shaft 41 is located at the bottom of the second driving member and is rotatably engaged with the frame 1. The second rotating shaft 41 is fixed with two second driving arms 42. The ends of the two second driving arms 42 away from the second rotating shaft 41 are hinged to the second connecting rod 43. The ends of the second connecting rods 43 away from the second driving arms 42 are hinged to the corresponding second swing arms 6.

[0040] The above-mentioned second power supply device includes a second telescopic cylinder 44 and a second transmission member 45. The cylinder barrel end of the second telescopic cylinder 44 is hinged to the frame 1, and the cylinder rod end of the second telescopic cylinder 44 is hinged to the second transmission member 45. The end of the second transmission member 45 away from the second telescopic cylinder 44 is connected to the second rotating shaft 41 to prevent rotation.

[0041] When the second driving mechanism 4 is working, the cylinder rod end of the second telescopic cylinder 44 retracts, driving the second transmission member 45 to rotate a corresponding angle. Since the second transmission member 45 is connected to the second rotating shaft 41 for preventing rotation, the second rotating shaft 41 is driven by the second transmission member 45 to rotate a corresponding angle synchronously, and synchronously drives the two second driving arms 42 connected to the second rotating shaft 41 for preventing rotation to rotate a corresponding angle, and then drives the second swing arm 6 to rotate and open via the second connecting rod 43, so that the turning pallet 2 pushes the patient to turn over in the second direction.

[0042] In this embodiment, the first telescopic cylinder 34 and the second telescopic cylinder 44 are electric telescopic cylinders. The first transmission member 35 and the first driving arm 32 are welded and fixed to the first rotating shaft 31 to prevent rotation. The second transmission member 45 and the second driving arm 42 are welded and fixed to the second rotating shaft 41 to prevent rotation. In practice, the first driving arm 32 and the first rotating shaft 31, as well as the second driving arm 42 and the second rotating shaft 41, can also be configured as other connection structures, as long as the first driving arm 32 and the first rotating shaft 31 and the second driving arm 42 and the second rotating shaft 41 can be synchronously rotated. For example, the inner hole of the first driving arm 32 (the second driving arm 42) can be designed as a square hole, and a square shaft section that adapts to the square hole can be designed on the first rotating shaft 31 (the second rotating shaft 41). In addition, the above-mentioned first transmission member 35 (second transmission member 45) can also be designed to be fixedly connected to one of the first driving arms 32 (second driving arm 42). Then, when the first transmission member 35 (second transmission member 45) rotates, the first rotating shaft 31 (second rotating shaft 42) can be driven to rotate through the corresponding first driving arm 32 (second driving arm 42), thereby driving the other first driving arm 32 (second driving arm 42) to rotate.

[0043] It should be noted that, in this embodiment, in order to facilitate the first connecting rod 33 and the second connecting rod 43 to smoothly drive the first swing arm 5 and the second swing arm 6 to move, a first make way groove 51 and a second make way groove (not shown in the figure) are designed on the first swing arm 5 and the second swing arm 6 respectively to provide sufficient space for the swing of the first connecting rod 33 and the second connecting rod 43.

[0044] In practice, the first connecting rod 33 and the second connecting rod 43 can also be omitted, and a slide groove can be directly set on the first swing arm 5 and the second swing arm 6, and the end of the first driving arm 32 (second driving arm 43) away from the first rotating shaft 31 (second rotating shaft 41) can be designed to be slidably connected to the slide groove, such as providing a pulley on the first driving arm 32 (second driving arm 43) that cooperates with the slide groove, so as to drive the first swing arm 5 (second swing arm 6) to move.

[0045] It should also be noted that, in this embodiment, there are two first swing arms 5 and two second swing arms 6. In practice, they can also be designed to be one or more as needed.

[0046] Referring to Figures 1 and 3 , the first and second telescopic cylinders 34, 44 of this embodiment are mounted in different orientations. The rod end of the first telescopic cylinder 34 faces the left side of the frame 1, while the rod end of the second telescopic cylinder 44 faces the right side of the frame 1. This mounting orientation allows the first and second drive mechanisms 3, 4 to drive the turning plate 2 from a closed position to a first and second open position, respectively, to achieve left and right turning of the patient.

[0047] Furthermore, the frame 1 is provided with two first limiters 11 and two second limiters 12. Both the first limiters 11 and the second limiters 12 function as limit switches. The first limiter 11 is positioned near the right side of the frame 1, while the second limiter 12 is positioned near the left side of the frame 1. The first limiters 11 and the second limiters 12 are used to define the initial positions of the first swing arm 5 and the second swing arm 6, respectively. When the first limit piece 11 abuts against the first swing arm 5, the first swing arm 5 is located in its initial position, and when the second limit piece 12 abuts against the second swing arm 6, the second swing arm 6 is located in its initial position; when the first swing arm 5 and the second swing arm 6 are both in their respective initial positions, the turning pallet 2 is in a closed state. At this time, the first swing arm 5 and the hinge axis of the frame 1 and the second swing arm 6 and the hinge axis of the turning pallet 2 are coaxial, and the first swing arm 5 and the hinge axis of the turning pallet 2 and the second swing arm 6 and the hinge axis of the frame 1 are coaxial, so that the rotation of the turning pallet 2 is smoother and there is no sense of obstruction.

[0048] Referring to Figure 4, the bottom of the turning support plate 2 of this embodiment is provided with two first cross beams 21 hinged to the first swing arm 5, and two second cross beams 22 hinged to the second swing arm 6. The right side of the first cross beam 21 is provided with a hinge hole for hinged connection to the first swing arm 5, and the left side of the second cross beam 22 is provided with a hinge hole for hinged connection to the second swing arm 6.

[0049] Referring to Figure 5 , six support plates are fixedly connected to the frame 1 of this embodiment, forming two first channels 13 and two second channels 14 on the frame 1. The two first position-limiting members 11 are respectively installed in the two first channels 13, and the two second position-limiting members 12 are respectively installed in the two second channels 14. When the turning pallet 2 is in the closed state, the first crossbeam 21, first drive arm 32, first connecting rod 33, and first swing arm 5 are located in the corresponding first channels 13, while the second crossbeam 22, second drive arm 42, second connecting rod 43, and second swing arm 6 are located in the corresponding second channels 14.

[0050] In the description of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, systems, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0051] In the description of this specification, the reference terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, systems, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, systems, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A turning device, characterized in that: include: A frame, a turning pallet, a first driving mechanism and a second driving mechanism; The turning over supporting plate and the frame are connected via a plurality of first swing arms and a plurality of second swing arms, wherein the first end of the first swing arm is hinged to the left side of the frame, the second end of the first swing arm is hinged to the right side of the turning over supporting plate, the first end of the second swing arm is hinged to the right side of the frame, and the second end of the second swing arm is hinged to the left side of the turning over supporting plate; The first driving mechanism is in transmission connection with the first swing arm, and is used for driving the first swing arm to rotate around the hinge axis between the first swing arm and the frame, so that the turning support plate switches between its closed state and the first open state; The second driving mechanism is in driving connection with the second swing arm, and is used for driving the second swing arm to rotate around a hinge axis between the second swing arm and the frame, so that the turning pallet is switched between a closed state and a second open state.

2. A turning device according to claim 1, characterized in that: The first driving mechanism and the second driving mechanism each include a driving member and a power providing device; The lower part of the driving member is hinged to the frame, and the power supply device is in transmission connection with the driving member to drive the driving member to rotate around the hinge axis between the driving member and the frame; The upper portion of the driving member of the first driving mechanism is transmission-connected to the first swing arm, and the upper portion of the driving member of the second driving mechanism is transmission-connected to the second swing arm.

3. A turning device according to claim 2, characterized in that: The driving member comprises a rotating shaft rotatably matched with the frame, and a plurality of driving arms are fixedly matched with the rotating shaft; In the first driving mechanism, a plurality of the driving arms are connected to a plurality of the first swing arms in a one-to-one correspondence; In the second driving mechanism, a plurality of the driving arms are connected to a plurality of the second swing arms in a one-to-one correspondence.

4. A turning device according to claim 3, characterized in that: The driving member further comprises a connecting rod, and one end of the driving arm away from the rotating shaft is hinged to the connecting rod; In the first driving mechanism, one end of the connecting rod away from the driving arm is hinged to the corresponding first swing arm; In the second driving mechanism, one end of the connecting rod away from the driving arm is hinged to the corresponding second swing arm.

5. A turning device according to claim 3, characterized in that: The power supply device includes a telescopic cylinder and a transmission member, the cylinder barrel end of the telescopic cylinder is hinged to the frame, the cylinder rod end of the telescopic cylinder is hinged to the transmission member, and one end of the transmission member away from the telescopic cylinder is connected to the corresponding rotating shaft to prevent rotation.

6. A turning device according to claim 5, characterized in that: In the first driving mechanism, the cylinder rod end of the telescopic cylinder faces the left side of the frame; In the second driving mechanism, the cylinder rod end of the telescopic cylinder faces the right side of the frame.

7. The turning device according to claim 1, characterized in that: The frame is provided with a first limiting member and a second limiting member, when the first limiting member abuts against the first swing arm, the first swing arm is located at its initial position, and when the second limiting member abuts against the second swing arm, the second swing arm is located at its initial position; When the first swing arm and the second swing arm are both located at their respective initial positions, the turning support plate is located in its closed state; When the turning pallet is in its closed state, the first swing arm and the hinge axis of the frame and the second swing arm and the hinge axis of the turning pallet are coaxial, and the first swing arm and the hinge axis of the turning pallet and the second swing arm and the hinge axis of the frame are coaxial.

8. A turning device according to claim 7, characterized in that: The first limiting member and the second limiting member are both limit switches.

9. The turning device according to claim 7, characterized in that: The first limiting member is arranged close to the right side of the frame, and the second limiting member is arranged close to the left side of the frame.

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