Piston mechanism, opening and closing device for ventilation opening, and method for operating opening and closing device

Abstract

The invention belongs to the field of hydraulic technology and pneumatic technology, and particularly relates to a piston mechanism, an opening and closing device for a ventilation opening and a working method of the opening and closing device. Two ends of the piston rod respectively extend into the first piston cylinder and the second piston cylinder; the input end of the transmission assembly is connected with the piston rod, and the output end is connected with the first bevel gear; the pneumatic assembly communicates with the first piston cylinder and the second piston cylinder; the control module is electrically connected with the pneumatic assembly and is configured to control the pneumatic assembly to adjust the pressure in the corresponding piston barrel so as to push the piston rod to move towards the first piston barrel or the second piston barrel, namely, a first bevel gear of the transmission assembly is driven to rotate forwards or backwards; according to the piston mechanism, the meshing surface of the first bevel gear is cleaned in the rotating process of the first bevel gear, so that the rotating smoothness is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the general field of hydraulic technology and pneumatic technology, and specifically relates to a fluid actuating device for moving a component from one position to another, and more particularly to a piston mechanism, an opening and closing device for a vent, and a working method of the opening and closing device. Background Art

[0002] The vent is a normally open door. In order to save effort when opening and closing, a driver is generally used to open and close the normally open door.

[0003] In the related art, the driving end of the driver adopts a bevel gear output, and the hinge mechanism of the normally open door adopts an adapted bevel gear input, and the two bevel gears mesh and rotate; however, since it is a normally open door, the meshing point of the two bevel gears will accumulate dust due to long-term disuse, resulting in unsmooth meshing and rotation during use.

[0004] Therefore, how to solve the technical problem that the meshing rotation of the bevel gear is not smooth when the normally open door is in use is urgently needed to be solved by those skilled in the art.

[0005] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0006] The embodiments of the present disclosure at least provide a piston mechanism, an opening and closing device for a vent, and a working method of the opening and closing device.

[0007] In the first aspect, an embodiment of the present disclosure provides a piston mechanism, which includes: a first piston cylinder and a second piston cylinder symmetrically arranged; a piston rod, whose two ends extend into the first piston cylinder and the second piston cylinder respectively; a transmission assembly, whose input end is connected to the piston rod, and whose output end is connected to the first bevel gear; a pneumatic assembly, which is respectively connected to the first piston cylinder and the second piston cylinder; a cleaning assembly; and a control module, which is electrically connected to the pneumatic assembly and is configured to adjust the pressure in the corresponding piston cylinder by controlling the pneumatic assembly to push the piston rod to move toward the first piston cylinder or the second piston cylinder, that is, to drive the first bevel gear of the transmission assembly to rotate forward or reverse; and during the movement of the piston rod, the piston rod squeezes the cleaning assembly to clean the meshing surface of the rotating side of the first bevel gear.

[0008] In an optional embodiment, the cleaning assembly includes: a first cleaning member arranged in the first piston cylinder and a second cleaning member arranged in the second piston cylinder; wherein the two ends of the piston rod are respectively connected to the first cleaning member and the second cleaning member; in the process of moving toward the first piston cylinder, the piston rod drives the first bevel gear to rotate forward, and at the same time the piston rod squeezes the first cleaning member, so that the first cleaning member blows air to clean and applies lubricating oil to the meshing surface of the rotating side of the first bevel gear in turn; and in the process of moving toward the second piston cylinder, the piston rod drives the first bevel gear to counterclockwise, and at the same time the piston rod squeezes the second cleaning member, so that the second cleaning member applies lubricating oil and sprays degreasing agent to the meshing surface of the rotating side of the first bevel gear in turn.

[0009] In an optional embodiment, the control module is configured to first control the piston rod to move toward the first piston cylinder, and then control the piston rod to return to the second piston cylinder.

[0010] In an optional embodiment, the first cleaning member and the second cleaning member both include: a box body, fixedly arranged in the corresponding piston cylinder; and a guide shaft, arranged in the box body, and sleeved with a first push plate and a second push plate, the first push plate and the second push plate divide the box body into a first storage chamber and a second storage chamber; wherein the first push plate is arranged close to the piston rod, and the second push plate is arranged away from the piston rod, and the piston rod is connected to the first push plate through a driving rod; in the process of moving toward the first piston cylinder or the second piston cylinder, the piston rod first drives the first push plate to squeeze the object in the first storage chamber, and then drives the first push plate and the second push plate to move synchronously to squeeze the object in the second storage chamber; wherein, in the first cleaning member, air is stored in the first storage chamber, and lubricating oil is stored in the second storage chamber; and in the second cleaning member, lubricating oil is stored in the first storage chamber, and degreasing agent is stored in the second storage chamber.

[0011] In an optional embodiment, a plurality of equal-height blocks are arranged on the side of the first push plate facing the second push plate; a spring is arranged on the side of the second push plate away from the first push plate, and the spring is sleeved on the guide shaft; wherein during the process of the first push plate squeezing the first storage cavity, the spring presses against the second push plate.

[0012] In an optional embodiment, the transmission assembly includes: a first rotating shaft, on which a gear is provided; and a second rotating shaft, connected to the first rotating shaft via a transmission rod; wherein the gear is connected to the piston rod, and the first bevel gear is connected to the second rotating shaft; and the piston rod drives the first rotating shaft to rotate by moving, the rotation of the first rotating shaft drives the second rotating shaft to rotate via the transmission rod, and the rotation of the second rotating shaft drives the first bevel gear to rotate.

[0013] In an optional embodiment, the piston rod is axially provided with flat teeth; the flat teeth are meshed with gears; a first inflation port is provided at the bottom of the first piston cylinder; a second inflation port is provided at the bottom of the second piston cylinder; the first inflation port and the second inflation port are respectively connected to independent air pumps.

[0014] In a second aspect, an embodiment of the present disclosure provides an opening and closing device for a vent using the piston mechanism as described above, comprising: a vent; and a hinge mechanism, comprising: a third rotating shaft, a connecting rod group and a second bevel gear; wherein one end of the connecting rod group is connected to the third rotating shaft, and the other end is connected to the vent; the second bevel gear is arranged at the end of the third rotating shaft and meshes with the first bevel gear; the control module is configured to drive the piston rod to move toward the first piston cylinder by controlling the pneumatic component to open the vent, and at the same time the piston rod squeezes the first cleaning member to blow air to clean and apply lubricating oil to the rotating side of the first bevel gear in turn; and the control module is also configured to drive the piston rod to move toward the second piston cylinder by controlling the pneumatic component to close the vent, and at the same time the piston rod squeezes the second cleaning member to apply lubricating oil and spray degreasing agent to the rotating side of the first bevel gear in turn.

[0015] In an optional embodiment, the locking mechanism includes: a locking cylinder, a locking column is arranged at the end of the locking cylinder; a locking hole is opened on the transmission rod; the cylinder drives the locking column to extend into the locking hole to achieve locking.

[0016] In a third aspect, an embodiment of the present disclosure provides a working method of an opening and closing device for a vent, comprising: a control module controls a piston rod to move toward a first piston cylinder to open the vent, and at the same time the piston rod squeezes a second cleaning member to sequentially apply lubricating oil and spray a degreaser to the rotating side of the first bevel gear; a control module controls a piston rod to move toward a second piston cylinder to close the vent, and at the same time the piston rod squeezes a second cleaning member to sequentially apply lubricating oil and spray a degreaser to the rotating side of the first bevel gear.

[0017] The beneficial effects of the present invention are that the piston mechanism, the opening and closing device for the vent and the working method of the opening and closing device are as follows: in the process of opening the vent, the first cleaning member is squeezed to first blow and clean the rotating side of the first bevel gear to blow away the debris as much as possible, and then the first bevel gear is coated with lubricating oil to ensure smooth rotation of the first bevel gear; and in the process of closing the vent, the second cleaning member is squeezed to first coat the rotating side of the first bevel gear with lubricating oil to ensure smooth rotation of the first bevel gear, and then the first bevel gear is sprayed with a degreasing agent to clean the lubricating oil on the first bevel gear to prevent the lubricating oil from being exposed for a long time and forming lumps, thereby affecting the next rotation of the first bevel gear.

[0018] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic cross-sectional view of a piston mechanism provided in an embodiment of the present disclosure; Figure 2 A schematic diagram of the structure of a piston rod provided in an embodiment of the present disclosure when it moves to one end; Figure 3 A schematic diagram of a structure in which a piston rod squeezes a first storage chamber provided by an embodiment of the present disclosure; Figure 4 A schematic diagram of a structure of a piston rod squeezing a second storage chamber provided by an embodiment of the present disclosure; Figure 5 A schematic diagram of the structure of a transmission assembly provided in an embodiment of the present disclosure; Figure 6 A schematic structural diagram of an opening and closing device for a vent provided in an embodiment of the present disclosure.

[0022] In the figure: A first piston cylinder 1, a first inflation port 11; A second piston cylinder 2, a second air filling port 21; Piston rod 3, drive rod 31, flat gear 32; Transmission assembly 4, first bevel gear 41, first rotating shaft 42, gear 43, second rotating shaft 44, transmission rod 45, locking hole 451; Door panel 5; The first cleaning member 6, the box body 61, the first storage chamber 611, the second storage chamber 612, the first push plate 62, the equal height block 621, the second push plate 63, the guide shaft 64, the spring 65, and the first guide tube assembly 66; A second cleaning member 7, a second flow guide tube assembly 71; Hinge mechanism 8, third rotating shaft 81, connecting rod assembly 82, second bevel gear 83; Locking cylinder 9, locking column 91. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, in the drawings, the thickness of the components may be exaggerated or reduced in order to effectively describe the technical content.

[0025] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0026] like Figure 1 As shown, at least one embodiment provides a piston mechanism, which includes: a first piston cylinder 1 and a second piston cylinder 2 that are symmetrically arranged; a piston rod 3, both ends of which extend into the first piston cylinder 1 and the second piston cylinder 2, respectively; a transmission assembly 4, an input end of which is connected to the piston rod 3, and an output end of which is connected to the first bevel gear 41; a pneumatic assembly, which is respectively connected to the first piston cylinder 1 and the second piston cylinder 2; a cleaning assembly; and a control module, which is electrically connected to the pneumatic assembly and is configured to adjust the pressure in the corresponding piston cylinder by controlling the pneumatic assembly to push the piston rod 2 to move toward the first piston cylinder 1 or the second piston cylinder 2, that is, to drive the first bevel gear 41 of the transmission assembly 4 to rotate forward or reverse; and during the movement of the piston rod 2, the piston rod 2 squeezes the cleaning assembly to clean the meshing surface of the rotating side of the first bevel gear 41.

[0027] In this embodiment, the pneumatic assembly is composed of two independent air pumps, the first air pump is connected to the first inflation port 11 of the first piston cylinder 1, and the second air pump is connected to the second inflation port 21 of the second piston cylinder 2. The first air pump and the second air pump can both perform inflation and deflation operations; specifically, when the air pressure in the second piston cylinder 2 is greater than the air pressure in the first piston cylinder 1, the piston rod 3 moves toward the first piston cylinder 1, and the first bevel gear 41 rotates forward at this time; the present piston mechanism ensures that the meshing surface on the rotating side of the first bevel gear 41 can be cleaned regardless of whether the first bevel gear 41 is rotating forward or reverse, and the desired cleaning effect can be achieved by using different cleaning substances and the order of use.

[0028] In some embodiments, the cleaning assembly includes: a first cleaning member 6 arranged in the first piston cylinder 1 and a second cleaning member 7 arranged in the second piston cylinder 2; wherein the two ends of the piston rod 3 are respectively connected to the first cleaning member 6 and the second cleaning member 7; in the process of the piston rod 3 moving toward the first piston cylinder 1, the piston rod 3 drives the gear 41 to rotate forward, and at the same time, the piston rod 3 squeezes the first cleaning member 6, so that the first cleaning member 6 blows air to clean and apply lubricating oil to the rotating side of the first bevel gear 41 in turn; and in the process of moving toward the second piston cylinder 2, the piston rod 3 drives the first bevel gear 41 to reverse, and at the same time, the piston rod 3 squeezes the second cleaning member 7, so that the second cleaning member 7 applies lubricating oil and sprays degreasing agent to the rotating side of the first bevel gear 41 in turn.

[0029] Optionally, the first bevel gear 41 of the piston mechanism is used to drive the door panel 5 to open and close; when the first bevel gear 41 rotates forward, it drives the door panel 5 to open. Since the door panel 5 is a normally open door panel 5, the connection between the door panel 5 and the first bevel gear 41 will be adhered with dust and other debris due to long-term non-use. Therefore, during the forward rotation of the first bevel gear 41, the rotating side of the first bevel gear 41 is first blown and cleaned by squeezing the first cleaning member 6 to blow away the debris as much as possible, and then the first bevel gear 41 is coated with lubricating oil to ensure smooth rotation of the first bevel gear 41; when the first bevel gear 4 1 drives the door panel 5 to close when it is reversed. At this time, the second cleaning member 7 is squeezed to apply lubricating oil to the rotating side of the first bevel gear 41 to ensure smooth rotation of the first bevel gear 41, and then the first bevel gear 41 is sprayed with a degreasing agent to clean the lubricating oil on the first bevel gear 41 to prevent the lubricating oil from being exposed for a long time and agglomerating to affect the next rotation of the first bevel gear 41, that is, it is ensured that no matter whether the first bevel gear 41 is rotating forward or reverse, the meshing surface of the rotating side of the first bevel gear 41 can be cleaned, and different cleaning substances can be used to achieve different effects.

[0030] In some embodiments, the control module is configured to first control the piston rod 3 to move toward the first piston cylinder 1 and then control the piston rod 3 to return to the second piston cylinder 2 , that is, first rotate forward to open the door panel 5 and then reverse to close the door panel 5 .

[0031] like Figure 2As shown, in some embodiments, the first cleaning member 6 and the second cleaning member 7 both include: a box body 61, fixedly disposed in the corresponding piston cylinder; and a guide shaft 64, disposed in the box body 61, and sleeved with a first push plate 62 and a second push plate 63, the first push plate 62 and the second push plate 63 separate the box body 61 into a first storage chamber 611 and a second storage chamber 612; wherein, the first push plate 62 is disposed close to the piston rod 3, and the second push plate 63 is disposed away from the piston rod 3, the first storage chamber 611 formed by separation is close to the piston rod 3, and the second storage chamber 612 formed by separation is away from the piston rod 3, and the piston rod 3 is connected to the first push plate 62 through the driving rod 31.

[0032] Specifically, Figures 2 to 4 As shown, in order to open the door panel 5, the piston rod 3 needs to move toward the first piston cylinder 1. During the movement, the piston rod 3 squeezes the first cleaning member 6, that is, drives the first push plate 62 to move, thereby squeezing the first storage chamber 611 storing air, and uses the first bevel gear 41 for air blowing cleaning; when the first push plate 62 moves a certain distance, the first push plate 62 presses against the second push plate 63, thereby driving the second push plate 63 to move synchronously. At this time, the first storage chamber 611 is no longer squeezed, and what is squeezed is the second storage chamber 612 storing lubricating oil.

[0033] Specifically, in the process of closing the door panel 5, the working principle is similar to that of opening the door panel 5, except that the piston rod 3 squeezes the second cleaning member 7, and the first storage chamber 611 of the second cleaning member 7 is used to store lubricating oil, and the second storage chamber 612 is used to store degreasing agent.

[0034] like Figure 3 , Figure 6 As shown, in some embodiments, the first storage chamber 611 of the first cleaning member 6 is connected to a guide tube, and the second storage chamber 612 is also connected to a guide tube. The two guide tubes are combined to form a first guide tube group 66, and extend to the first bevel gear 41, aligned with the forward rotation side of the first bevel gear 41; similarly, the second cleaning member 7 is provided with a second guide tube group 71, aligned with the reverse rotation side of the first bevel gear 41; wherein a one-way valve is provided in each guide tube.

[0035] like Figure 3 As shown, in some embodiments, in order to achieve the function of squeezing the first storage cavity 611 first and then squeezing the second storage cavity 612, a plurality of equal-height blocks 621 are provided on the side of the first push plate 62 facing the second push plate 63, and a spring 65 is provided on the side of the second push plate 63 away from the first push plate 62, and the spring 65 is sleeved on the guide shaft 64; such a design can prevent the second push plate 63 from retreating when the first storage cavity 611 is under pressure, and will not move with the first push plate 62 until it abuts against the equal-height blocks 621.

[0036] like Figure 5 As shown, in some embodiments, the transmission assembly 4 includes: a first rotating shaft 42, on which a gear 43 is provided; and a second rotating shaft 44, which is connected to the first rotating shaft 42 through a transmission rod 45; wherein the gear 43 is connected to the piston rod 3, and the first bevel gear 41 is connected to the second rotating shaft 44.

[0037] In some embodiments, the piston rod 3 is provided with flat teeth 32 along the axial direction; the flat teeth 32 are meshed with the gear 43 .

[0038] Specifically, the piston rod 3 drives the first rotating shaft 42 to rotate by moving, the rotation of the first rotating shaft 42 drives the second rotating shaft 44 to rotate through the transmission rod 45, and the rotation of the second rotating shaft 44 drives the first bevel gear 41 to rotate.

[0039] like Figure 6 As shown, at least one embodiment also provides an opening and closing device for a vent, which includes: a piston mechanism as described above; a door panel 5; and a hinge mechanism 8, which includes: a third rotating shaft 81, a connecting rod group 82 and a second bevel gear 83; wherein one end of the connecting rod group 82 is connected to the third rotating shaft 81, and the other end is connected to the door panel 5; the second bevel gear 83 is arranged at the end of the third rotating shaft 81 and meshes with the first bevel gear 41; the control module is configured to drive the piston rod 3 to move toward the first piston cylinder 1 by controlling the pneumatic component to open the door panel 5, and at the same time the piston rod 3 squeezes the first cleaning member 6 to blow air to clean and apply lubricating oil to the rotating side of the first bevel gear 41 in turn; and the control module is also configured to drive the piston rod 3 to move toward the second piston cylinder 2 by controlling the pneumatic component to close the door panel 5, and at the same time the piston rod 3 squeezes the second cleaning member 7 to apply lubricating oil and spray degreasing agent to the rotating side of the first bevel gear 41 in turn.

[0040] Specifically, the first bevel gear 41 will drive the second bevel gear 83 to rotate when it rotates forward or reversely, and the meshing surfaces of the two are both facing the rotating side, so no matter it rotates forward or reversely, it is only necessary to clean the meshing surface of the rotating side.

[0041] In some embodiments, the opening and closing device for the vent also includes: a locking mechanism, which includes: a locking cylinder 9, a locking column 91 is provided at the end of the locking cylinder 9; a locking hole 451 is provided on the transmission rod 45; the cylinder 9 drives the locking column to extend into the locking hole 451 to achieve locking.

[0042] Specifically, the setting of the locking mechanism can limit the position of the opened door panel 5 to prevent it from shaking due to force.

[0043] Regarding the specific structure and implementation process of the piston mechanism, please refer to the relevant discussion in the above embodiments, which will not be repeated here.

[0044] At least one embodiment also provides a working method of an opening and closing device for a vent, comprising: a control module controls the piston rod 3 to move toward the first piston cylinder 1 to open the door panel 5, and at the same time the piston rod 3 squeezes the second cleaning member 7 to sequentially apply lubricating oil and spray degreasing agent to the rotating side of the first bevel gear 41; the control module controls the piston rod 3 to move toward the second piston cylinder 2 to close the door panel 5, and at the same time the piston rod 3 squeezes the second cleaning member 7 to sequentially apply lubricating oil and spray degreasing agent to the rotating side of the first bevel gear 41.

[0045] To summarize, the piston mechanism, the opening and closing device for the vent and the working method of the opening and closing device are as follows: in the process of opening the door panel 5, the first cleaning member 6 is squeezed to first blow and clean the rotating side of the first bevel gear 41 to blow away the debris as much as possible, and then the first bevel gear 41 is coated with lubricating oil to ensure smooth rotation of the first bevel gear 41; and in the process of closing the door panel 5, the second cleaning member 7 is squeezed to first coat the rotating side of the first bevel gear 41 with lubricating oil to ensure smooth rotation of the first bevel gear 41, and then the first bevel gear 41 is sprayed with a degreasing agent to clean the lubricating oil on the first bevel gear 41 to prevent the lubricating oil from being exposed for a long time and forming lumps, thereby affecting the next rotation of the first bevel gear 41.

[0046] Herein, when it is mentioned that a first component is located on a second component, this may mean that the first component may be directly formed on the second component, or a third component may be interposed between the first component and the second component.

[0047] In this article, when an element or layer is referred to as being "located on," "engaged to," "connected to," "attached to," or "coupled to" another element or layer, it may be directly located on, engaged, connected, attached to, or coupled to another element or layer, or there may be intermediate elements or layers. In contrast, when an element is referred to as being "directly on," "directly engaged to," "directly connected to," "directly attached to," or "directly coupled to" another element or layer, there may be no intermediate elements or layers. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.). As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0048] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." modify the entire list of elements when following a list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0049] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limited. As used herein, the singular articles "one", "an" and "the" may also be intended to include plural forms, unless it is clearly indicated above that this is not the case. The terms "comprise", "include" and "have" are inclusive, and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0050] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0051] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0053] Spatially relative terms, such as "inside", "outside", "below", "below", "down", "above", "on", etc., may be used herein to facilitate description of the relationship of one element or feature to another element or feature as illustrated in the figure. In addition to the orientation depicted in the figure, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is turned over, the elements described as "below" or "below" other elements or features will be oriented to be "above" other elements or features. Therefore, the example term "below" can cover the orientation above and below. The device can be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0054] In the above discussion, unless otherwise stated, the terms "about," "approximately," "substantially," etc., when used to describe a numerical value, mean a variation of + / - 10% of the value.

[0055] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A piston mechanism, characterized in that: include: A first piston cylinder (1) and a second piston cylinder (2) are symmetrically arranged; A piston rod (3), two ends of which extend into the first piston cylinder (1) and the second piston cylinder (2) respectively; A transmission assembly (4), the input end of which is connected to the piston rod (3), and the output end of which is connected to the first bevel gear (41); A pneumatic assembly, connected to the first piston cylinder (1) and the second piston cylinder (2) respectively; Cleaning components; as well as a control module, electrically connected to the pneumatic assembly, and configured to control the pneumatic assembly to adjust the pressure in the corresponding piston cylinder to push the piston rod (2) toward the first piston cylinder (1) or the second piston cylinder (2), that is, to drive the first bevel gear (41) of the transmission assembly (4) to rotate forward or reverse; and During the movement of the piston rod (2), the piston rod (2) squeezes the cleaning component to clean the meshing surface of the rotating side of the first bevel gear (41).

2. The piston mechanism according to claim 1, characterized in that: The cleaning assembly comprises: a first cleaning member (6) arranged in the first piston cylinder (1) and a second cleaning member (7) arranged in the second piston cylinder (2); wherein The two ends of the piston rod (3) are respectively connected to the first cleaning member (6) and the second cleaning member (7); In the process of moving toward the first piston cylinder (1), the piston rod (3) drives the first bevel gear (41) to rotate forwardly, and at the same time the piston rod (3) squeezes the first cleaning member (6), so that the first cleaning member (6) blows air to clean and apply lubricating oil to the meshing surface of the rotating side of the first bevel gear (41) in turn; and In the process of moving toward the second piston cylinder (2), the piston rod (3) drives the first bevel gear (41) to reverse, and at the same time the piston rod (3) squeezes the second cleaning member (7), so that the second cleaning member (7) sequentially applies lubricating oil and sprays degreasing agent to the meshing surface of the rotating side of the first bevel gear (41).

3. The piston mechanism according to claim 2, characterized in that: The control module is configured to first control the piston rod (3) to move towards the first piston cylinder (1), and then control the piston rod (3) to return to the second piston cylinder (2).

4. The piston mechanism according to claim 3, characterized in that: The first cleaning member (6) and the second cleaning member (7) both comprise: A box body (61) is fixedly disposed in the corresponding piston cylinder; and The guide shaft (64) is disposed in the box body (61) and is sleeved with a first push plate (62) and a second push plate (63); the first push plate (62) and the second push plate (63) separate the box body (61) into a first storage chamber (611) and a second storage chamber (612); wherein The first push plate (62) is arranged close to the piston rod (3), and the second push plate (63) is arranged away from the piston rod (3); the piston rod (3) is connected to the first push plate (62) via a driving rod (31); In the process of moving toward the first piston cylinder (1) or the second piston cylinder (2), the piston rod (3) first drives the first push plate (62) to squeeze the object in the first storage chamber (611), and then drives the first push plate (62) and the second push plate (63) to move synchronously to squeeze the object in the second storage chamber (612); Wherein, in the first cleaning member (6), air is stored in the first storage cavity (611), and lubricating oil is stored in the second storage cavity (612); and In the second cleaning member (7), lubricating oil is stored in the first storage chamber (611), and a degreasing agent is stored in the second storage chamber (612).

5. The piston mechanism according to claim 4, characterized in that: A plurality of equal-height blocks (621) are provided on one side of the first push plate (62) facing the second push plate (63); A spring (65) is provided on a side of the second push plate (63) away from the first push plate (62), and the spring (65) is sleeved on the guide shaft (64); wherein During the process of the first push plate (62) squeezing the first storage chamber (611), the spring (65) presses against the second push plate (63).

6. The piston mechanism according to claim 5, characterized in that: The transmission assembly (4) comprises: A first rotating shaft (42), a gear (43) being provided on the shaft; and A second rotating shaft (44) connected to the first rotating shaft (42) via a transmission rod (45); Wherein, the gear (43) is connected to the piston rod (3), and the first bevel gear (41) is connected to the second rotating shaft (44); and The piston rod (3) drives the first rotating shaft (42) to rotate by moving, the rotation of the first rotating shaft (42) drives the second rotating shaft (44) to rotate via the transmission rod (45), and the rotation of the second rotating shaft (44) drives the first bevel gear (41) to rotate.

7. The piston mechanism according to claim 6, characterized in that: The piston rod (3) is provided with flat teeth (32) along the axial direction; The flat teeth (32) mesh with the gear (43); A first inflation port (11) is provided at the bottom of the first piston cylinder (1); A second inflation port (21) is provided at the bottom of the second piston cylinder (2); The first inflation port (11) and the second inflation port (21) are respectively connected to independent air pumps.

8. A vent opening and closing device using the piston mechanism as claimed in claim 1, characterized in that: include: A door panel (5) for opening and closing the vent; and A hinge mechanism (8), comprising: a third rotating shaft (81), a connecting rod group (82) and a second bevel gear (83); in One end of the connecting rod group (82) is connected to the third rotating shaft (81), and the other end is connected to the door panel (5); The second bevel gear (83) is arranged at the end of the third rotating shaft (81) and meshes with the first bevel gear (41); The control module is configured to control the pneumatic assembly to drive the piston rod (3) to move toward the first piston cylinder (1) to open the door panel (5), and at the same time the piston rod (3) squeezes the first cleaning member (6) to blow air to the rotating side of the first bevel gear (41) to clean and apply lubricating oil in turn; and The control module is further configured to control the pneumatic assembly to drive the piston rod (3) to move toward the second piston cylinder (2) to close the door panel (5), while the piston rod (3) squeezes the second cleaning member (7) to sequentially apply lubricating oil and spray degreasing agent to the rotating side of the first bevel gear (41).

9. The vent opening and closing device according to claim 8, characterized in that: Also includes: A locking mechanism, the locking mechanism comprising: a locking cylinder (9), a locking column (91) being provided at the end of the locking cylinder (9); The transmission rod (45) is provided with a locking hole (451); The cylinder (9) drives the locking column to extend into the locking hole (451) to achieve locking.

10. A method for operating the ventilation opening and closing device according to claim 8, characterized in that: include: The control module controls the piston rod (3) to move toward the first piston cylinder (1) to open the door panel (5), and at the same time the piston rod (3) squeezes the second cleaning member (7) to sequentially apply lubricating oil and spray degreasing agent to the rotating side of the first bevel gear (41); The control module controls the piston rod (3) to move toward the second piston cylinder (2) to close the door panel (5), and at the same time the piston rod (3) squeezes the second cleaning member (7) to sequentially apply lubricating oil and spray degreasing agent to the rotating side of the first bevel gear (41).

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