Ventilator trolley

Abstract

The present invention discloses a ventilator trolley. Among them, the ventilator trolley includes a mobile base, a clamping structure and a breathing host. The mobile base is provided with a placement platform; the clamping structure is movably arranged on the placement platform; the breathing host is provided with a buckle groove. The breathing host is placed on the placement platform, and the clamping structure moves relative to the mobile base to be clamped and fixed with the buckle groove to limit the movement of the breathing host. The technical solution of the present invention aims to enable quick unlocking between the ventilator host and the trolley, so as to facilitate the installation of the breathing host on the suspension tower and improve the efficiency of installation and disassembly of the breathing host.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a ventilator trolley. Background Art

[0002] A ventilator is an automatic ventilation breathing device, which has functions of assisting inhalation and ventilation monitoring to scientifically monitor the vital signs of patients. In order to facilitate movement, the ventilator is usually placed on a trolley. When the ventilator is used in an ICU ward, it is necessary to meet the function of the hanging tower of the ventilator. However, the existing ventilator and the trolley are fixed by screws, and tools are required for both disassembly and installation. For medical workers, the installation and disassembly processes are both relatively cumbersome, the operation efficiency is low, and it is not convenient to use. Summary of the Invention

[0003] The main object of the present invention is to provide a ventilator trolley, aiming to quickly unlock between the ventilator main unit and the trolley, so as to facilitate the installation of the breathing main unit on the hanging tower and improve the installation and disassembly efficiency of the breathing main unit.

[0004] To achieve the above object, the ventilator trolley proposed by the present invention includes:

[0005] A moving base, the moving base is provided with a placement platform;

[0006] A clamping structure, the clamping structure is movably arranged on the placement platform; and

[0007] A breathing main unit, the breathing main unit is provided with a buckle groove, the breathing main unit is placed on the placement platform, and the clamping structure moves relative to the moving base to be clamped and fixed with the buckle groove to limit the movement of the breathing main unit.

[0008] In an embodiment of the present application, an avoidance opening communicating with the internal space is provided in the placement platform, the clamping structure includes a limiting block, and the clamping structure is movably arranged in the internal space of the placement platform, so that the limiting block can extend along the avoidance opening to be clamped with the buckle groove.

[0009] In an embodiment of the present application, the limiting block includes a first meshing section and a clamping section, the clamping structure further includes a transmission gear, the transmission gear is rotatably arranged on the placement platform, the transmission gear is meshed and connected with the first meshing section, and the transmission gear rotates to drive the first meshing section to synchronously drive the clamping section to reciprocate in the avoidance opening.

[0010] In an embodiment of the present application, the clamping structure further includes a moving block, the moving block is provided with a second meshing section, the moving block is slidably arranged on the placement platform, and the second meshing section is meshed and connected with the transmission gear.

[0011] In one embodiment of the present application, the moving block is provided with a guide hole, the moving block forms the second meshing section on the hole wall of the guide hole, and the transmission gear portion is inserted into the guide hole and meshedly connected with the second meshing section.

[0012] In one embodiment of the present application, the placement platform includes a cover plate and a shell that are connected to each other in a covering manner, the shell is provided with the avoidance opening, and the surface of the shell facing the cover plate is provided with a first guide groove and a second guide groove that are connected to each other, the second guide groove is connected to the avoidance opening, the moving block is slidably arranged in the first guide groove, the limit block is slidably arranged in the second guide groove, and the transmission gear is rotatably arranged at the connection between the first guide groove and the second guide groove.

[0013] In one embodiment of the present application, the shell is also provided with a holding opening connected to the first guide groove, and the clamping structure also includes a holding switch and a reset spring. The holding switch is rotatably connected to the placement platform and is located at the holding opening. The holding switch is connected to the moving block, and one end of the reset spring abuts against the inner wall of the first guide groove of the placement platform, and the other end abuts against the moving block.

[0014] In one embodiment of the present application, the housing is provided with a positioning column at the bottom of the second guide groove, the clamping section is provided with a sliding through hole, the positioning column passes through the sliding through hole and is accommodated in the sliding through hole, so that when the limit block slides in the second wire groove, the positioning column can slide relative to the sliding through hole;

[0015] And / or, a guide slope is provided on a side of the locking section facing away from the first engagement section.

[0016] In one embodiment of the present application, a mounting groove is recessed on the surface of the respiratory host facing the placement platform, the buckle groove is opened on the groove wall of the mounting groove, the avoidance opening is opened on the side wall of the placement platform, and the placement platform is embedded in the mounting groove so that the limit block can extend along the avoidance opening to engage with the buckle groove.

[0017] In one embodiment of the present application, the ventilator trolley further includes a gas cylinder holder, and the gas cylinder holder is detachably connected to the mobile base.

[0018] The ventilator trolley of the technical solution of the present invention includes a mobile base provided with a placement platform and a clamping structure movably disposed on the placement platform. At the same time, the ventilator trolley further includes a breathing host, and the breathing host is provided with a buckling groove. In this way, after the breathing host is placed on the placement platform for pre-positioning, medical staff can manipulate the clamping structure to move relative to the mobile base so that it is clamped and fixed in the buckling groove, thereby restricting the movement of the breathing host. Furthermore, it is ensured that the movement of the mobile base can drive the breathing host to move to different scenarios for rescue and use, ensuring the stability of the breathing host during movement. When the breathing host needs to be used on a suspension tower, the clamping structure is driven to move again to disengage it from the buckling groove, so that medical staff can directly move the breathing host to assemble and use it with the suspension tower. In this way, neither additional tools are needed for the installation and disassembly process, which is relatively convenient and has high operation efficiency, improving the convenience of using the ventilator trolley. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0020] Figure 1 Structural schematic diagram of an embodiment of the ventilator trolley of the present invention;

[0021] Figure 2 Structural schematic diagram of another perspective of the ventilator trolley of the present invention;

[0022] Figure 3 Assembly structural schematic diagram of the ventilator trolley of the present invention;

[0023] Figure 4 Assembly structural schematic diagram of the cover plate of the mobile base of the ventilator trolley of the present invention;

[0024] Figure 5 For Figure 4 Partial enlarged view of part A in

[0025] Figure 6 Structural schematic diagram of the clamping structure of the ventilator trolley of the present invention;

[0026] Figure 7 Structural schematic diagram of the placement platform of the ventilator trolley of the present invention;

[0027] Figure 8 Assembly structural schematic diagram of the gas cylinder bracket and the mobile base of the ventilator trolley of the present invention.

[0028] Explanation of the reference numerals in the drawings:

[0029] Label Name Label Name 100 Ventilator trolley 2121 Guide inclined plane 10 Moving base 2122 Sliding through hole 11 Placement platform 2123 Relieving groove 111 Cover plate 22 Drive gear 112 Shell 23 Moving block 1121 Avoidance opening 231 Second meshing section 1122 Operating port 232 Guide hole 1123 First guide groove 24 Operating switch 1124 Second guide groove 25 Return spring 1125 Positioning post 26 Connection kit 1126 Mounting post 30 Respiratory host 1127 Fixed post 31 Buckling groove 12 Wheel 32 Mounting groove 20 Clamping structure 33 Display screen 21 Limit block 40 Gas cylinder bracket 211 First meshing section 50 Screw 212 Clamping section

[0030] The realization, functional features, and advantages of the present invention will be further described in conjunction with embodiments and with reference to the accompanying drawings. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0033] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0034] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] The present invention provides a ventilator trolley 100.

[0036] Refer to Figures 1 to 5, in an embodiment of the present invention, the ventilator trolley 100 includes a moving base 10, a clamping structure 20, and a breathing host 30. The moving base 10 is provided with a placement platform 11; the clamping structure 20 is movably arranged on the placement platform 11; the breathing host 30 is provided with a buckle groove 31. The breathing host 30 is placed on the placement platform 11, and the clamping structure 20 moves relative to the moving base 10 to be clamped and fixed with the buckle groove 31 to limit the movement of the breathing host 30.

[0037] Wherein, wheels 12 are provided at the bottom of the moving base 10. The wheels 12 can be universal wheels. Understandably, through the arrangement of the wheels 12, the moving base 10 can be pushed to move, so as to realize the movement of the emergency ventilator trolley 100, which is convenient for rescue use in different scenarios. The breathing host 30 is used to monitor the health data of patients, so that medical staff can make medical judgments. The breathing host 30 is provided with a display screen 33, through which it is convenient for medical staff to view, record, and adjust parameters. In addition, components such as buttons, rotary encoders, gas path interfaces, and flow sensor interfaces are also provided on the front side of the breathing host 30, and the components provided on the front side of the breathing host 30 are convenient for operation.

[0038] The ventilator trolley 100 of the technical solution of the present invention includes a moving base 10 provided with a placement platform 11 and a clamping structure 20 movably arranged on the placement platform 11. At the same time, the ventilator trolley 100 also includes a breathing host 30, which is provided with a buckle groove 31. In this way, after the breathing host 30 is placed on the placement platform 11 for pre-positioning, medical staff can manipulate the clamping structure 20 to move relative to the moving base 10 to be clamped and fixed with the buckle groove 31, so as to limit the movement of the breathing host 30, and further ensure that the movement of the moving base 10 can drive the breathing host 30 to move to different scenarios for rescue and use, and ensure the stability of the breathing host 30 during movement. When the breathing host 30 needs to be used on a suspension tower, the clamping structure 20 is driven to move again to disengage from the buckle groove 31, so that medical staff can directly move the breathing host 30 to be assembled and used with the suspension tower. In this way, no additional tools are needed for both the installation and disassembly processes, which is relatively convenient and has a high operation efficiency, improving the convenience of using the ventilator trolley 100.

[0039] In an embodiment of the present application, with reference to Figures 4 to 7, an avoidance opening 1121 communicating with the internal space is provided in the placement platform 11. The clamping structure 20 includes a limiting block 21. The clamping structure 20 is movably arranged in the internal space of the placement platform 11 so that the limiting block 21 can extend along the avoidance opening 1121 to be clamped with the clamping groove 31. It can be understood that when the breathing host 30 is placed on the placement platform 11, the clamping groove 31 and the avoidance opening 1121 are arranged opposite to each other, so that when the limiting block 21 extends from the avoidance opening 1121, it can be directly clamped and fixed with the clamping groove 31 to limit the movement of the breathing host 30. When the breathing host 30 needs to be disassembled, the clamping structure 20 can be driven to make the limiting block 21 disengage from the clamping groove 31 and retract from the avoidance opening 1121 into the placement platform 11, so as to facilitate the movement of the breathing host 30. The opening of the avoidance opening 1121 is adapted to the outer contour of the limiting block 21, so that the limiting block 21 can extend or retract in the avoidance opening 1121 more conveniently. In order to further improve the clamping stability, a plurality of clamping grooves 31 of the breathing host 30 can be provided, and thus the number of the limiting blocks 21 and the avoidance openings 1121 can also be provided in plurality, so that a limiting block 21 passes through an avoidance opening 1121 to be clamped and fixed with a clamping groove 31. Specifically, those skilled in the art can set it according to the specific situation.

[0040] Further, the limiting block 21 includes a first meshing section 211 and a clamping section 212. The clamping structure 20 further includes a transmission gear 22. The transmission gear 22 is rotatably arranged on the placement platform 11. The transmission gear 22 is meshed and connected with the first meshing section 211. The transmission gear 22 rotates to drive the first meshing section 211 to synchronously drive the clamping section 212 to reciprocate in the avoidance opening 1121. Wherein, the first meshing section 211 and the clamping section 212 can be an integral structure, thus saving the previous installation process, and at the same time ensuring the overall structural strength of the limiting block 21, and further ensuring the stability of the clamping connection between the limiting block 21 and the buckling groove 31. An installation column 1126 is arranged in the internal space of the placement platform 11, so that the transmission gear 22 can be sleeved at the installation column 1126, so that the transmission gear 22 can rotate relative to the placement platform 11. A plurality of racks are arranged on the first meshing section 211. Thus, through the meshing connection between the first meshing section 211 and the transmission gear 22, the transmission gear 22 rotates to drive the first meshing section 211 to drive the clamping section 212 to reciprocate at the avoidance opening 1121, so that the clamping section 212 is in clamping cooperation with the buckling groove 31. When the breathing host 30 is provided with two opposite buckling grooves 31, and when the placement platform 11 is provided with two opposite avoidance openings 1121, the number of limiting blocks 21 is also two. The first meshing sections 211 of the two limiting blocks 21 can be respectively meshed and connected to the opposite sides of the transmission gear 22, so as to realize that the rotation of a single transmission gear 22 can synchronously drive the two clamping sections 212 to approach or move away from each other, so that the two clamping sections 212 can be clamped or disengaged from the buckling groove 31 at the same time, and further making the clamping structure 20 in the placement platform 11 more compact, so as to avoid the over-large volume of the ventilator trolley 100. In addition, relief grooves 2123 are formed on the two opposite surfaces of the two clamping sections 212, so that when the two clamping sections 212 approach each other, the two first meshing sections 211 can be respectively inserted into the two relief grooves 2123, so as to further make the clamping structure 20 in the placement platform 11 more compact. Of course, the clamping structure 20 can also include structures such as a ball screw, so as to drive the clamping section 212 to reciprocate in the avoidance opening 1121. The specific setting can be set by those skilled in the art according to the specific situation.

[0041] Furthermore, the clamping structure 20 further includes a moving block 23, the moving block 23 is provided with a second engaging section 231, the moving block 23 is slidably disposed on the placement platform 11, and the second engaging section 231 is engaged with the transmission gear 22. Wherein, the moving block 23 can be directly slidably disposed within the placement platform 11. Of course, in order to improve the sliding efficiency and stability, a slide rail can also be provided for sliding cooperation with the moving block 23. And a rack adapted to the transmission gear 22 is also provided on the second engaging section 231 of the moving block 23. Thus, the relative sliding of the moving block 23 is used to drive the transmission gear 22 to rotate, making the operation process more convenient.

[0042] Furthermore, the moving block 23 is provided with a guiding hole 232, and the moving block 23 forms the second engaging section 231 on the hole wall of the guiding hole 232. A part of the transmission gear 22 is inserted into the guiding hole 232 and engaged with the second engaging section 231. Wherein, the moving block 23 is provided with the guiding hole 232, and at the same time, the moving block 23 forms the second engaging section 231 on the hole wall of the guiding hole 232. Thus, by inserting the transmission gear 22 into the guiding hole 232 to be engaged with the second engaging section 231, the stability of the engagement connection between the second engaging section 231 and the transmission gear 22 is ensured, ensuring the directional movement of the moving block 23, and avoiding the situation where the transmission gear 22 cannot be rotated after the two are disengaged, improving the clamping stability of the clamping structure 20.

[0043] Optionally, referring to Figure 4 and Figure 7 , the placement platform 11 includes a cover plate 111 and a housing 112 connected by covering, the housing 112 is provided with the avoidance opening 1121, the surface of the housing 112 facing the cover plate 111 is provided with a first guiding groove 1123 and a second guiding groove 1124 which are communicated with each other, the second guiding groove 1124 is communicated with the avoidance opening 1121, the moving block 23 is slidably disposed in the first guiding groove 1123, the limiting block 21 is slidably disposed in the second guiding groove 1124, and the transmission gear 22 is disposed at the connection of the first guiding groove 1123 and the second guiding groove 1124.

[0044] Wherein, the surface of the cover plate 111 facing away from the housing 112 can be arranged as a plane, so that the cover plate 111 can completely abut against the bottom surface of the breathing host 30, thereby increasing the contact area between the two, ensuring the friction force between the breathing host 30 and the cover plate 111, and further improving the stability of the breathing host 30 after installation. The cover plate 111 and the housing 112 can be fixed by detachable means such as screw connection or snap connection, so as to facilitate the later maintenance and replacement of the clamping structure 20. The housing 112 is provided with a first guiding groove 1123 and a second guiding groove 1124 that are connected and communicate with each other, and the first guiding groove 1123 and the second guiding groove 1124 can be arranged at an angle. In an embodiment, when projected from the direction of the cover plate 111 towards the housing 112, the projection of the first guiding groove 1123 and the projection of the second guiding groove 1124 are arranged perpendicular to each other. The transmission gear 22 is arranged at the connection of the first guiding groove 1123 and the second guiding groove 1124. At the same time, the first meshing section 211 and the second meshing section 231 can be stacked and meshed with the transmission gear 22 at the same time. In this way, the moving directions of the moving block 23 and the limiting block 21 are also arranged perpendicular to each other, so as to avoid interference with each other when they move, and at the same time, the operation of medical staff will not affect the extension or retraction of the limiting block 21, so as to ensure the stability of the clamping of the clamping structure 20.

[0045] Furthermore, the housing 112 is also provided with a manipulation opening 1122 connected to the first guide groove 1123, and the clamping structure 20 further includes a manipulation switch 24 and a reset spring 25, wherein the manipulation switch 24 is rotatably connected to the placement platform 11 and is located at the manipulation opening 1122, the manipulation switch 24 is connected to the moving block 23, one end of the reset spring 25 abuts against the inner wall of the first guide groove 1123 of the placement platform 11, and the other end abuts against the moving block 23. The manipulation switch 24 can be rotatably arranged on the housing 112 via a rotating shaft, and the operation switch can be provided with a connecting kit 26 connected to the moving block 23, so that the moving block 23 can be driven to move in the first guide groove 1123 via the connecting kit 26 by rotating the manipulation switch 24. The housing 112 is provided with a manipulation opening 1122 connected to the first guide groove 1123, and the manipulation switch 24 can be contained and hidden in the manipulation opening 1122 to prevent the manipulation switch 24 from being exposed to the outside and easily damaged by collision. A reset spring 25 is also provided in the first guide groove 1123, so that when the medical staff turns the manipulation switch 24, the movement of the moving block 23 will abut against the reset spring 25, and at the same time, the limit block 21 will be retracted into the second guide groove 1124, and when the medical staff removes the external force, the reset spring 25 will be elastically reset to push the moving block 23 back to its original position, so that the limit block 21 is simultaneously driven to extend out of the avoidance opening 1121 again, so as to realize the automatic reset of the limit block 21, so as to further improve the convenience of the operation of the clamping structure 20. It should be noted that the housing 112 is provided with a fixing column 1127 in the first guide groove 1123, so that the reset spring 25 is sleeved and fixed on the fixing column 1127, thereby ensuring the stability of the reset spring 25 when deformed. Of course, the number of the reset spring 25 can be multiple to further improve the stability of the automatic reset of the limit block 21.

[0046] In one embodiment of the present application, refer to Figure 5 and Figure 7, a positioning post 1125 is provided at the bottom of the second guiding groove 1124 of the housing 112. A sliding through hole 2122 is formed in the clamping section 212. The positioning post 1125 passes through the sliding through hole 2122 and is received in the sliding through hole 2122. When the limiting block 21 slides in the second wire groove, the positioning post 1125 can slide relative to the sliding through hole 2122. Among them, the housing 112 is provided with the positioning post 1125, and the clamping section 212 is provided with the sliding through hole 2122. By inserting the positioning post 1125 into the sliding through hole 2122, the stability of the clamping section 212 during movement is ensured, the directional movement of the clamping section 212 is ensured, and further the stability of the engagement between the first engaging section 211 and the transmission gear 22 is ensured, so as to avoid the situation that the transmission gear 22 cannot be driven to rotate after the two are disengaged, and the stability of the clamping structure 20 is improved.

[0047] Optionally, referring to Figure 6 , a guiding inclined surface 2121 is provided on one side of the clamping section 212 away from the first engaging section 211. Among them, by providing the guiding inclined surface 2121 on the clamping section 212, when the outer wall surface of the ventilator main body abuts against the guiding inclined surface 2121 of the clamping section 212, the clamping section 212 is more easily retracted into the avoidance opening 1121 under the guidance of the guiding inclined surface 2121, and then it is convenient for the clamping section 212 to be clamped into the buckle groove 31, improving the clamping efficiency.

[0048] In an embodiment of the present application, referring to Figure 3 and Figure 4 , a mounting groove 32 is recessed on the surface of the breathing main unit 30 facing the placement platform 11. The buckle groove 31 is formed on the groove wall surface of the mounting groove 32. The avoidance opening 1121 is formed on the side wall of the placement platform 11. The placement platform 11 is embedded in the mounting groove 32 so that the limiting block 21 can extend out along the avoidance opening 1121 to be clamped with the buckle groove 31. Among them, by forming the mounting groove 32, the accuracy of the positioning of the breathing main unit 30 and the placement platform 11 is ensured. At the same time, the buckle groove 31 is formed on the groove wall surface of the mounting groove 32, and the avoidance opening 1121 is formed on the side wall of the placement platform 11. In this way, the placement platform 11 can be completely received in the mounting groove 32 so that the buckle groove 31 and the avoidance opening 1121 are oppositely arranged. Therefore, the mounting groove 32 can also play a limiting role to further ensure the stability of the breathing main unit 30 installed at the mobile base 10.

[0049] In an embodiment of the present application, referring to Figure 1 and Figure 8, the ventilator trolley 100 further includes a gas cylinder bracket 40, and the gas cylinder bracket 40 is detachably connected to the mobile base 10. Among them, in order to improve the usability of the ventilator trolley 100, a gas cylinder bracket 40 is also provided to be detachably connected to the mobile base 10. This gas cylinder bracket 40 can be used to place an oxygen cylinder, etc. according to needs, providing a reasonable solution for medical workers to enable the gas cylinder bracket 40 to achieve diversified applications. And the gas cylinder bracket 40 can be fixed to the mobile base 10 by means of screw connection 50, etc., so that the connection is relatively convenient. Of course, it can also be connected by means of snap connection, etc. Specifically, it can be selected by those skilled in the art.

[0050] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A ventilator trolley, characterized in that, it includes: A moving base, the moving base is provided with a placement platform, and the bottom of the moving base is provided with wheels; A clamping structure, the clamping structure is movably arranged on the placement platform; And A breathing host, the breathing host is provided with a buckling groove, the breathing host is placed on the placement platform, and the clamping structure moves relative to the moving base to be clamped and fixed with the buckling groove to limit the movement of the breathing host; An avoidance opening communicating with the internal space is formed in the placement platform, the clamping structure includes a limiting block, and the clamping structure is movably arranged in the internal space of the placement platform so that the limiting block can extend out along the avoidance opening to be clamped with the buckling groove; The limiting block includes a first meshing section and a clamping section, the clamping structure further includes a transmission gear, the transmission gear is rotatably arranged on the placement platform, the transmission gear is meshed and connected with the first meshing section, and the transmission gear rotates to drive the first meshing section to synchronously drive the clamping section to reciprocate in the avoidance opening; The clamping structure further includes a moving block, the moving block is provided with a second meshing section, the moving block is slidably arranged on the placement platform, and the second meshing section is meshed and connected with the transmission gear; The placement platform includes a cover plate and a housing connected by covering, the housing is provided with the avoidance opening, a first guiding groove and a second guiding groove communicating with each other are formed on the surface of the housing facing the cover plate, the second guiding groove is communicated with the avoidance opening, the moving block is slidably arranged in the first guiding groove, the limiting block is slidably arranged in the second guiding groove, and the transmission gear is rotatably arranged at the connection of the first guiding groove and the second guiding groove; The moving block is provided with a guiding hole, the second meshing section is formed on the hole wall of the guiding hole of the moving block, and a part of the transmission gear is inserted into the guiding hole and is meshed and connected with the second meshing section; the first meshing section and the second meshing section are stacked and simultaneously meshed and connected with the transmission gear; The housing is further provided with an operation opening communicating with the first guiding groove, the clamping structure further includes an operation switch and a return spring, the operation switch is rotatably connected to the placement platform and is located at the operation opening, the operation switch is connected with the moving block, one end of the return spring abuts against the inner wall of the first guiding groove of the placement platform, and the other end abuts against the moving block; The surface of the breathing host facing the placement platform is recessed with an installation groove, the buckling groove is formed on the groove wall surface of the installation groove, the avoidance opening is formed on the side wall of the placement platform, and the placement platform is embedded in the installation groove so that the limiting block can extend out along the avoidance opening to be clamped with the buckling groove; Two opposite buckling grooves are formed on the breathing host, two opposite avoidance openings are formed on the placement platform, the number of the limiting blocks is also two, and the first meshing sections of the two limiting blocks are respectively meshed and connected to the opposite sides of the transmission gear.

2. The ventilator trolley according to claim 1, characterized in that, The housing is provided with a positioning column at the bottom of the second guide groove, the clamping section is provided with a sliding through hole, the positioning column passes through the sliding through hole and is accommodated in the sliding through hole, so that when the limit block slides in the second guide groove, the positioning column can slide relative to the sliding through hole; And / or, a guide slope is provided on a side of the locking section facing away from the first engagement section.

3. A ventilator trolley as claimed in any one of claims 1 to 2, It is characterized in that The ventilator trolley also includes a gas cylinder bracket, which is detachably connected to the mobile base.

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