Non-contact operating room microenvironment sampling device

Abstract

The invention provides a non-contact operating room microenvironment sampling device which comprises a movable base, a mechanical arm is arranged on the movable base, a supporting frame installed through a first telescopic rod is arranged at the end of the mechanical arm, and multiple sets of sampling swabs and multiple sets of collecting shells are arranged on the upper side and the lower side of the mechanical arm respectively. The supporting frame is provided with a rotating shell driven by a first motor to rotate, at least three sets of clamping mechanisms are evenly distributed on the outer circle face of the rotating shell in the annular direction, and the clamping mechanisms are used for clamping sampling swabs. A conveying mechanism is arranged on the mechanical arm, the conveying mechanism is connected with the multiple sets of sampling swabs and the multiple sets of collecting shells so that the sampling swabs and the collecting shells can be sequentially moved to the upper side and the lower side of the rotating shell, and a control mechanism is further arranged on the supporting frame; when the rotating shell rotates, the control mechanism drives the group of clamping mechanisms at the bottom to open and drives the group of clamping mechanisms at the top to close so as to clamp a new sampling swab.

Description

TECHNICAL FIELD

[0001] The present application relates to a non-contact operating room micro-environment sampling device. BACKGROUND

[0002] In order to detect the microbial content in the operating room air, the microbial contamination on the surface of surgical instruments and operating tables, and evaluate the cleaning and disinfection effect of the operating room, so as to ensure that the operating room environment meets the hygiene standard and reduce the risk of surgical infection, it is necessary to regularly sample the micro-environment in the operating room and send the collected samples for testing.

[0003] Among them, when sampling the operating table, surgical equipment, walls, floors and other positions, tools such as swabs and sampling brushes are needed to collect the environment. For example, a hospital environmental hygiene monitoring sampling box is provided in Chinese patent No. CN201974318U. The staff samples the air, object surface, etc. in the operating room, treatment room, ward, etc. when holding the box to the operating room, treatment room, ward, etc. The box cover is closed after operation, which has the characteristics of reasonable design, simple structure, safety and reliability, low cost and convenient use.

[0004] However, the existing equipment for collecting medical environment is mostly carried into the sampling environment by human, and the medical staff needs to take or replace the swabs, sampling brushes and other tools used for sampling, so that the medical staff is easily infected in the process of environmental sampling, and the collected data is also prone to errors due to manual operation of the medical staff. SUMMARY

[0005] In view of the problems in the prior art, the present application provides a non-contact operating room micro-environment sampling device to solve the technical problems that the existing equipment for collecting medical environment is mostly carried into the sampling environment by human, and the medical staff needs to take or replace the swabs, sampling brushes and other tools used for sampling, so that the medical staff is easily infected in the process of environmental sampling, and the collected data is also prone to errors due to manual operation of the medical staff.

[0006] To achieve the above purpose, the present application provides the following technical scheme, a non-contact operating room micro-environment sampling device, comprising: A mobile base is provided with a mechanical arm, the end of the mechanical arm is provided with a support frame mounted by a first telescopic rod, and a plurality of sampling swabs and a plurality of collection shells are arranged on the upper and lower sides of the mechanical arm; A rotating shell is rotatably arranged on the support frame by a first motor, and at least three clamping mechanisms are uniformly distributed on the outer circular surface of the rotating shell, and the clamping mechanisms are used to clamp the sampling swabs; A conveying mechanism, mounted on the robotic arm and connected to multiple sets of sampling swabs and multiple sets of collection shells, sequentially moves the sampling swabs and collection shells to the upper and lower sides of the rotating shell; and A control mechanism, mounted on the support frame, drives a set of clamping mechanisms at the bottom to open and a set of clamping mechanisms at the top to close to clamp a new sampling swab when the rotating shell rotates.

[0007] In a preferred embodiment, the conveying mechanism includes: The mounting frame is provided in two sets, which are located on the upper and lower sides of the robotic arm respectively. Each set of the mounting frame is provided with two sets of rotatable sprockets. The conveyor chain has two sets, each fitted onto one of the two sets of sprockets. Multiple sets of sampling swabs and multiple sets of collection shells are detachably arranged circumferentially around the two sets of conveyor chains. A second motor is mounted on the robotic arm and is simultaneously connected to one of the sprockets on the two sets of conveyor chains to drive the two sets of sprockets to rotate.

[0008] In a preferred embodiment, a plurality of flexible clamps are evenly distributed around the periphery of one of the conveyor chains, and the sampling swab is held in the flexible clamps.

[0009] In a preferred embodiment, a plurality of slots are evenly distributed around the periphery of one of the conveyor chains, and a locking block is provided on one side of the collecting shell, the locking block being detachably locked in the slot.

[0010] In a preferred embodiment, the clamping mechanism includes: The mounting frame is located on the outer circular surface of the rotating shell; Two sets of clamping seats are arranged opposite each other and slidably disposed within the mounting frame. Each set of clamping seats has a connecting plate on its open side, and both connecting plates extend outside the mounting frame. Two sets of elastic elements are provided, each located on the side of the two sets of clamping seats away from the connecting plate, and abut against the mounting frame.

[0011] In a preferred embodiment, the control mechanism includes: The trapezoidal block is fixedly connected to one end of the connecting plate that extends outside the mounting frame; and A C-shaped frame is installed inside the support frame, and the C-shaped frame can abut against the inclined surface of the trapezoidal block during the rotation of the rotating shell.

[0012] In a preferred embodiment, two sets of clamping arc plates are slidably disposed on the mounting frame. The two sets of clamping arc plates cooperate to form a cavity for accommodating the sampling swab. After the two sets of clamping seats are closed, the two sets of clamping arc plates can rotate between the two sets of clamping seats along their axis. The rotating shell is also provided with a driving component for driving the two sets of clamping arc plates to rotate.

[0013] In a preferred embodiment, the driving component includes: The third motor, having the same number of units as the clamping mechanism, is fixedly installed inside the rotating housing, and its output shaft is equipped with a drive gear; and A locking tooth is provided on one side of the clamping arc plate. After the two sets of clamping arc plates are closed, the locking tooth is engaged with the drive gear.

[0014] In a preferred embodiment, each of the two sets of clamping arc plates is provided with a first magnetic block, and two sets of second magnetic blocks are arranged opposite each other in the horizontal direction inside the rotating shell. After the two sets of clamping seats are opened, the first magnetic block can be attracted to the second magnetic block.

[0015] In a preferred embodiment, a number of control switches of the same number as the clamping mechanism are arranged circumferentially on one side of the rotating shell. The multiple sets of control switches are electrically connected to multiple sets of the third motors. A second telescopic rod is provided on the support frame, and the telescopic end of the second telescopic rod can abut against one of the sets of control switches.

[0016] Compared with the prior art, the present invention has the following beneficial effects: During use, the device can be remotely moved via a base and robotic arm to move the device within the operating room and guide the sampling swab to a designated location for sampling. After sampling, a first motor drives a rotating shell to rotate on a support frame. As one set of clamping mechanisms on the rotating shell moves to the bottom, it opens under the control of a mechanism, allowing the used sampling swab to fall into a collection shell for subsequent testing. Simultaneously, as another set of clamping mechanisms moves to the top, it closes to hold unused sampling swabs. After holding the swab, the rotating shell continues to rotate, extending the sampling swab horizontally for the next sampling operation. A conveying mechanism then moves the unused sampling swabs and collection shell sequentially to the upper and lower ends of the support frame for later retrieval. This device allows for rapid sampling of the operating room's microenvironment without requiring staff to enter the operating room. The replacement and collection of sampling swabs can also be remotely controlled, effectively preventing infection of medical personnel during environmental sampling and ensuring more accurate data collection. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 A three-dimensional structural schematic diagram of a non-contact operating room microenvironment sampling device provided by the present invention; Figure 2 This is a side view of a non-contact operating room microenvironment sampling device according to the present invention; Figure 3 for Figure 2 Enlarged view of region a in the middle; Figure 4 This is a schematic diagram of the rotating shell in a non-contact operating room microenvironment sampling device of the present invention; Figure 5 This is a schematic diagram of the disassembled internal parts structure of the rotating shell in the non-contact operating room microenvironment sampling device of the present invention; Figure 6 This is a schematic diagram of the clamping arc plate in a non-contact operating room microenvironment sampling device of the present invention; Figure 7 This is a schematic diagram of the clamping seat in a non-contact operating room microenvironment sampling device of the present invention; Figure 8 This is a schematic diagram of the flexible clip in a non-contact operating room microenvironment sampling device of the present invention; Figure 9 This is a schematic diagram of the collection shell structure in a non-contact operating room microenvironment sampling device of the present invention.

[0019] Figure label: 101. Movable base; 102. Robotic arm; 103. First telescopic rod; 104. Support frame; 105. First motor; 106. Second telescopic rod; 107. C-shaped frame; 201. Mounting frame; 202. Sprocket; 203. Conveyor chain; 204. Second motor; 301. Sampling swab; 302. Flexible clip; 303. Slot; 304. Collection shell; 305. Locking block; 401. Rotating shell; 402. Mounting frame; 403. Clamping seat; 404. Connecting plate; 405. Trapezoidal block; 406. Elastic element; 501. Clamping arc plate; 502. Clamping teeth; 503. First magnetic block; 504. Second magnetic block; 601. Third motor; 602. Drive gear; 603. Control switch. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Those skilled in the art can make some non-essential improvements and adjustments to the present invention based on the above application content.

[0021] Example:

[0022] like Figures 1 to 3 As shown, the present invention provides a non-contact operating room microenvironment sampling device, including a movable base 101, a robotic arm 102 mounted on the movable base 101, a support frame 104 mounted at the end of the robotic arm 102 via a first telescopic rod 103, a rotating shell 401 mounted on the support frame 104 and driven to rotate by a first motor 105, and at least three sets of clamping mechanisms evenly distributed around the outer circumference of the rotating shell 401 for clamping sampling swabs 301.

[0023] The device uses a clamping mechanism to hold the sampling swab 301. During use, the base 101 and robotic arm 102 can be moved remotely to allow the device to move within the operating room. The movement of the robotic arm 102 controls the movement of the sampling swab 301 to the designated area for sampling. The sampling range can be increased by extending the first telescopic rod 103. Throughout the sampling process, staff can operate the device from outside the operating room. A camera can also be added to the device for remote control, eliminating the need for staff to be present. The remote control of the base 101 and robotic arm 102 is a common technique in related fields and will not be elaborated upon here.

[0024] like Figure 1 , 2 As shown, in this embodiment, multiple sets of sampling swabs 301 and multiple sets of collection shells 304 are respectively arranged on the upper and lower sides of the robotic arm 102. The robotic arm 102 is provided with a conveying mechanism connected to the multiple sets of sampling swabs 301 and multiple sets of collection shells 304. The sampling swabs 301 and collection shells 304 can be moved sequentially to the upper and lower sides of the rotating shell 401 through the conveying mechanism. The conveying mechanism includes two sets of mounting frames 201, which are located on the upper and lower sides of the robotic arm 102 respectively. Each set of mounting frames 201 is provided with two sets of rotatable sprockets 202. Every two sets of sprockets 202 are connected by a set of conveying chains 203. The multiple sets of sampling swabs 301 and multiple sets of collection shells 304 are detachably arranged circumferentially on the periphery of the two sets of conveying chains 203. The robotic arm 102 is provided with a second motor 204, which is connected to one of the sets of sprockets 202 on the two sets of conveying chains 203 to drive the two sets of sprockets 202 to rotate.

[0025] The second motor 204 can drive two sets of sprockets 202 to rotate simultaneously. During the rotation of the sprockets 202, the conveyor chain 203 can be moved, thereby moving the unused sampling swabs 301 and the collection shell 304 to the upper and lower sides of the rotating shell 401 in sequence. This makes it convenient to transfer the used sampling swabs 301 into the collection shell 304 during the sampling process and to use the new sampling swabs 301 through the clamping mechanism.

[0026] like Figure 1 , Figure 2 , Figure 8 and Figure 9 As shown, in this embodiment, a set of conveyor chains 203 has multiple sets of flexible clips 302 evenly distributed around its periphery. The sampling swab 301 is secured within the flexible clip 302, and can be easily removed with slight force. Alternatively, the rod of the sampling swab 301 can be inserted downwards into the flexible clip 302 to complete the installation. The flexible clips 302 can be made of elastic plastic or other materials with a certain degree of elasticity. A set of conveyor chains 203 also has multiple sets of slots 303 evenly distributed around its periphery. A locking block 305 is provided on one side of the collection shell 304. The locking block 305 is detachably secured within the slot 303. After the sampling swab 301 falls into the collection shell 304, the locking block 305 can be removed to detach the collection shell 304, facilitating cleaning and disinfection of the used collection shell 304 for future use. Additionally, it is understood that in some embodiments, a slot can be opened on one side of the collection shell 304 to facilitate the movement of the sampling swab 301 into the slot.

[0027] like Figure 4 , Figure 5 and Figure 7 As shown, in this embodiment, the clamping mechanism includes a mounting frame 402 disposed on the outer circular surface of the rotating shell 401. Two sets of clamping seats 403 are arranged relatively slidably inside the mounting frame 402. A connecting plate 404 is provided on the opening side of each set of clamping seats 403. The two sets of connecting plates 404 extend out of the mounting frame 402. An elastic element 406 is provided on the side of each set of clamping seats 403 away from the connecting plate 404. The elastic element 406 abuts against the mounting frame 402.

[0028] Under the action of the elastic element 406, the two sets of clamping seats 403 are controlled to be clamped to hold the sampling swab 301. The two sets of elastic elements 406 can be compressed by pushing the end of the connecting plate 404 that extends outside the mounting frame 402, so that the two sets of clamping seats 403 can be opened. After the two sets of clamping seats 403 are opened, the sampling swab 301 can fall into the collection shell 304.

[0029] like Figure 3 , Figure 4 , Figure 5 and Figure 7As shown, in this embodiment, a control mechanism is provided on the support frame 104. When the rotating shell 401 rotates, the control mechanism drives a set of clamping mechanisms at the bottom to open and a set of clamping mechanisms at the top to close to clamp a new sampling swab 301. The control mechanism includes two sets of trapezoidal blocks 405. The trapezoidal blocks 405 are fixedly connected to one end of the connecting plate 404 extending outside the mounting frame 402. A C-shaped frame 107 is provided inside the support frame 104. During the rotation of the rotating shell 401, the C-shaped frame 107 can abut against the inclined surface of the trapezoidal blocks 405. Initially, the two sets of clamping seats 403 in one set of clamping mechanisms are closed. The rotating shell 401 can be controlled to rotate by the first motor 105. During the rotation of the rotating shell 401, when the clamping mechanism moves to its lowest point, the inclined surface of the trapezoidal blocks 405... The C-frame 107 is in contact with the sampler. The C-frame 107 pushes the trapezoidal block 405 to move, thereby opening the two sets of clamping seats 403. This allows a set of sampling swabs 301 to fall into the collection shell 304. When the clamping mechanism moves to its highest point, the trapezoidal block 405 disengages from the C-frame 107. Under the action of the elastic element 406, the two sets of clamping seats 403 can be controlled to close and clamp an unused set of sampling swabs 301. With a little force, the set of sampling swabs 301 can be removed from the flexible clamp 302 for the next sampling operation.

[0030] like Figures 4 to 7 As shown, in this embodiment, two sets of clamping arc plates 501 are slidably disposed on the mounting frame 402. The two sets of clamping arc plates 501 cooperate to form a cavity to accommodate the sampling swab 301. After the two sets of clamping seats 403 are closed, the two sets of clamping arc plates 501 can rotate between the two sets of clamping seats 403 along their axes. A driving assembly for driving the two sets of clamping arc plates 501 to rotate is also disposed inside the rotating shell 401. The driving assembly includes a third motor 601 with the same number of sets as the clamping mechanism. The third motor 601 is disposed inside the rotating shell 401, and its output shaft is provided with a driving gear 602. A locking tooth 502 is provided on one side of the clamping arc plate 501. After the two sets of clamping arc plates 501 are closed, the locking tooth 502 is engaged with the driving gear 602. Both sets of clamping arc plates 501 are provided with first magnetic blocks 503, and two sets of second magnetic blocks 504 are arranged opposite each other in the horizontal direction inside the rotating shell 401. After the two sets of clamping seats 403 are opened, the first magnetic blocks 503 can be attracted to the second magnetic blocks 504.

[0031] Among them, a rotating shell 401 has a circumferential arrangement of control switches 603 with the same number of sets as the clamping mechanism on one side. Multiple sets of control switches 603 are electrically connected to multiple sets of third motors 601 respectively. A second telescopic rod 106 is provided on the support frame 104. The telescopic end of the second telescopic rod 106 can abut against one of the sets of control switches 603.

[0032] When one of the clamping mechanisms rotates to the designated position, the extension of the second telescopic rod 106 can trigger one of the control switches 603, starting the corresponding third motor 601 to rotate. During the rotation of the third motor 601, the drive gear 602 rotates. Since the ring formed by the two clamping arc plates 501 in the closed state of the two clamping seats 403 can only rotate between the two clamping seats 403, the drive gear 602 rotates during the rotation by cooperating with the cleat 502 to drive the two clamping arc plates 501 to rotate, thereby driving the sampling swab 301 to rotate. With the lateral swing of the robotic arm 102, microorganisms on the plane can be collected, and the microorganisms can make full contact with the sampling swab 301. It can also collect microenvironments in narrow spaces or holes by controlling the rotation of the sampling swab 301 alone, thus improving the collection effect of the device.

[0033] After the data collection is completed, the third motor 601 stops starting. The two sets of clamping seats 403 are opened by the control of the C-frame 107. Under the action of the first magnetic block 503 and the second magnetic block 504, the two sets of clamping arc plates 501 are controlled to slide laterally and open, so that the first magnetic block 503 and the second magnetic block 504 are attracted to each other, so as to prevent the position of the two sets of clamping arc plates 501 from shifting. At the same time, it is ensured that the sampling swab 301 can enter through the opening of the two sets of clamping arc plates 501 during the rotation of the rotating shell 401. When the trapezoidal block 405 is disengaged from the C-frame 107, the clamping seats 403 are controlled to close and push the two sets of clamping arc plates 501 to close. During the closing process of the two sets of clamping arc plates 501, the locking teeth 502 are locked on the drive gear 602 again for subsequent use.

[0034] Specific usage and beneficial effects of the present invention: During use, the device can be moved remotely via the base 101 and robotic arm 102 to move the device within the operating room and move the sampling swab 301 to the designated position for sampling. After sampling, the first motor 105 drives the rotating shell 401 to rotate on the support frame 104. As one set of clamping mechanisms on the rotating shell 401 moves to the bottom, it opens under the action of the control mechanism, allowing the used sampling swab 301 to fall into the collection shell 304 for subsequent testing. At the same time, as one set of clamping mechanisms moves to the top, it closes to hold unused sampling swabs. 301, and after clamping the sampling swab 301, continue to control the rotating shell 401 to rotate so that the sampling swab 301 extends horizontally for the next sampling work. At the same time, the unused sampling swab 301 and the collection shell 304 are moved sequentially to the upper and lower ends of the support frame 104 by the conveying mechanism for subsequent handling. The microenvironment sampling of the operating room can be carried out by this device without the need for staff to enter the operating room, and the replacement and collection of the sampling swab 301 can also be remotely controlled, effectively avoiding infection of medical staff during the environmental sampling process, and the collected data is more accurate.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above. Modifications or improvements can be made to the present invention, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A non-contact operating room micro-environment sampling device, characterized in that, The utility model relates to a kind of sampling device, including: Mobile base (101), mechanical arm (102) is provided on the mobile base (101), the end of the mechanical arm (102) is provided with support frame (104) by first telescopic rod (103), the upper and lower sides of the mechanical arm (102) are respectively provided with multiple groups of sampling swab (301) and multiple groups of collection shell (304); Rotary shell (401), by first motor (105) driven rotatably arranged on the support frame (104), the outer surface of the rotary shell (401) is evenly distributed with at least three groups of clamping mechanism, the clamping mechanism is used to clamp sampling swab (301); Conveying mechanism, it is arranged on the mechanical arm (102), and it is connected with multiple groups of sampling swab (301) and multiple groups of collection shell (304), to move sampling swab (301) and collection shell (304) sequentially to the upper and lower sides of the rotary shell (401); And Control mechanism, it is arranged on the support frame (104), to drive the clamping mechanism of bottom group to open and drive the clamping mechanism of top group to close to clamp new sampling swab (301) when the rotary shell (401) rotates.

2. A non-contact operating room micro-environment sampling device according to claim 1, wherein, The conveying mechanism includes: Mounting frame (201) is provided with two groups, and is respectively located in the upper and lower sides of the mechanical arm (102), and two groups of mounting frame (201) are all provided with two groups of rotatable sprocket (202); Conveying chain (203) is provided with two groups, and is respectively sleeved on two groups of sprocket (202), and multiple groups of sampling swab (301) and multiple groups of collection shell (304) are respectively detachably arranged on the circumferential side of two groups of conveying chain (203);And Second motor (204) is arranged on the mechanical arm (102), and is simultaneously connected with one of the sprocket (202) on two groups of conveying chain (203), to drive two groups of sprocket (202) to rotate.

3. A non-contact operating room micro-environment sampling device according to claim 2, wherein: The circumferential side of one of the conveying chain (203) is evenly distributed with multiple groups of flexible clamp (302), and the sampling swab (301) is clamped in the flexible clamp (302).

4. A non-contact operating room micro-environment sampling device according to claim 2, wherein: The circumferential side of one of the conveying chain (203) is evenly distributed with multiple groups of clamping groove (303), and one side of the collection shell (304) is provided with clamping block (305), and the clamping block (305) is detachably clamped in the clamping groove (303).

5. The non-contact operating room microenvironment sampling device of claim 1, wherein, The clamping mechanism includes: Mounting frame (402) is arranged on the outer surface of the rotary shell (401); Clamping seat (403) is oppositely arranged with two groups, and is slidably arranged in the mounting frame (402), and the opening side of two groups of clamping seat (403) is provided with connecting plate (404), and two groups of connecting plate (404) are stretched out from the mounting frame (402);And Elastic member (406) is provided with two groups, and is respectively located on the side of two groups of clamping seat (403) away from the connecting plate (404), and abuts with the mounting frame (402).

6. A non-contact operating room micro-environment sampling device according to claim 5, wherein, The control mechanism includes: A trapezoidal block (405) is fixedly connected with an end of the connecting plate (404) extending out of the mounting frame (402); and A C-shaped frame (107) is arranged in the support frame (104), and the C-shaped frame (107) can abut against the inclined surface of the trapezoidal block (405) in the rotating process of the rotating shell (401).

7. A non-contact operating room micro-environment sampling device according to claim 5, wherein: Two groups of clamping arc plates (501) are arranged on the mounting frame (402) in a sliding mode, and the two groups of clamping arc plates (501) cooperatively form a cavity for accommodating a sampling swab (301); after the two groups of clamping seats (403) are closed, the two groups of clamping arc plates (501) can rotate along the axis between the two groups of clamping seats (403); and the rotating shell (401) is further provided with a driving assembly for driving the rotation of the two groups of clamping arc plates (501).

8. A non-contact operating room micro-environment sampling device according to claim 7, wherein, The driving assembly comprises: A third motor (601) is arranged in the same group number as the clamping mechanism, is fixedly arranged in the rotating shell (401), and has a driving gear (602) arranged on the output shaft; and A clamping tooth (502) is arranged on one side of the clamping arc plate (501), and after the two groups of clamping arc plates (501) are closed, the clamping tooth (502) is clamped on the driving gear (602).

9. A non-contact operating room micro-environment sampling device according to claim 8, wherein: First magnetic attraction blocks (503) are arranged on the two groups of clamping arc plates (501), and second magnetic attraction blocks (504) are arranged in a horizontal direction opposite to each other in the rotating shell (401), and after the two groups of clamping seats (403) are opened, the first magnetic attraction blocks (503) can be attracted to the second magnetic attraction blocks (504).

10. A non-contact operating room micro-environment sampling device according to claim 8, wherein: A same group number of control switches (603) as the clamping mechanism is arranged on one side of the rotating shell (401) in a ring mode, a plurality of groups of the control switches (603) are electrically connected with a plurality of groups of the third motors (601) respectively, and a second telescopic rod (106) is arranged on the support frame (104), and the telescopic end of the second telescopic rod (106) can abut against one of the control switches (603).

Images