Air floating type transmission device with adaptive airflow guiding function

Abstract

The application relates to the technical field of transmission devices and discloses an air-floating transmission device with a self-adaptive airflow guiding function, which comprises a rack, a driving motor arranged on the rack, at least one driving synchronous pulley driven by the driving motor, at least one driven synchronous pulley and a synchronous belt wound around the driving synchronous pulley and the driven synchronous pulley, characterized in that the air-floating transmission device further comprises an air path system, an airflow guiding mechanism and a self-adaptive reversing driving mechanism; the air path system comprises an air source and a gas supply channel, the gas supply channel is provided with an air outlet pointing to the gap between the tooth surface of the synchronous belt upper side and the adjacent support surface, the airflow guiding mechanism is arranged on the gas supply channel and can change the airflow direction ejected from the air outlet; and the self-adaptive reversing driving mechanism is connected between the airflow guiding mechanism and the driving shaft of the driving synchronous pulley. The air-floating transmission device has the beneficial effects that the frictional resistance is extremely low, so that the load capacity, the motion precision and the energy utilization efficiency of the transmission device are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical transmission, in particular to a synchronous belt transmission device, especially a synchronous belt transmission device capable of self-adaptive adjustment of airflow direction according to transmission direction, thereby realizing air floating to reduce friction and auxiliary thrust. BACKGROUND

[0002] Synchronous belt transmission is a widely used mechanical transmission method in automatic equipment and precision conveying system, which realizes synchronous movement through the meshing of teeth and belt wheel tooth grooves, and has the advantages of accurate transmission ratio, low noise and no need for lubrication. However, when facing large load conditions, the support surface (such as guide rail or support plate) supporting the synchronous belt and the back surface or tooth surface of the synchronous belt will generate significant sliding friction. With the increase of load, the friction force increases sharply, resulting in reduced transmission efficiency, increased operating temperature, deteriorated positioning accuracy, and problems such as synchronous belt tooth skipping and abnormal wear, which seriously limits its application in heavy load and high precision requirements.

[0003] In the prior art, to solve the problem of friction, it is common to apply lubricating grease or use low-friction coefficient engineering plastics as sliding pair materials. However, these methods have the disadvantages of easy product contamination (such as glass, photovoltaic panels, food and other industries with high cleanliness requirements), the need for regular maintenance, and limited improvement effect under extreme loads. In addition, air floating technology has also been applied to the design of precision motion platforms, but it is usually used as a support unit independent of the transmission system, which has a complex structure, high cost, and cannot be deeply integrated with the synchronous belt transmission itself, thus failing to achieve the intelligent effect of reducing friction and providing auxiliary power using airflow.

[0004] Therefore, it is of great practical significance and market value to develop a new type of transmission device that can be deeply integrated with the synchronous belt transmission, intelligently reduce friction and provide auxiliary power, has a compact structure, and is suitable for clean environments. SUMMARY

[0005] The present application aims to overcome the shortcomings of the prior art and provide an air floating transmission device with self-adaptive airflow guiding function. The main purpose is to fundamentally convert solid sliding friction into gas friction by introducing controllable airflow between the synchronous belt and the support surface to form an air floating layer, thereby greatly reducing transmission resistance and wear. The further purpose is to enable the airflow direction to be self-adaptively adjusted according to the actual moving direction of the synchronous belt, to generate a horizontal auxiliary thrust consistent with the transmission direction while providing vertical air floating force, thereby significantly improving the load capacity, motion accuracy and energy utilization efficiency of the transmission device.

[0006] To achieve the above-mentioned inventive concept and purpose, the technical solution adopted by the present application is as follows:

[0007] The air floating type transmission device with self-adaptive airflow guiding function comprises a frame, a driving motor arranged on the frame, at least one driving synchronous pulley driven by the driving motor, at least one driven synchronous pulley, and a synchronous belt surrounding the driving synchronous pulley and the driven synchronous pulley, and further comprises an air path system comprising an air source and an air supply channel, the air supply channel having an air outlet pointing to a gap between a tooth surface of the synchronous belt and a support surface adjacent to the tooth surface; an airflow guiding mechanism arranged on the air supply channel and capable of changing the direction of the airflow ejected from the air outlet; a self-adaptive reversing driving mechanism connected between the airflow guiding mechanism and a driving shaft of the driving synchronous pulley; the self-adaptive reversing driving mechanism is configured to switch and keep the airflow guiding mechanism between at least two working positions corresponding to different moving directions of the synchronous belt in response to the change of the rotating direction of the driving shaft, so as to self-adaptively adjust the direction of the airflow to form an air floating layer with reduced friction and auxiliary thrust in the same direction as the transmission direction in the gap.

[0008] By adopting the above technical scheme, the air path system precisely delivers high-pressure gas to the key friction interface between the tooth surface of the synchronous belt and the support surface, the airflow guiding mechanism is responsible for regulating the spatial direction of the airflow, and the core function of the self-adaptive reversing driving mechanism is to establish an automatic and deterministic correlation between the rotating direction of the driving shaft and the working position of the airflow guiding mechanism. When the driving shaft changes the rotating direction due to the reversing of the driving motor, the mechanism is triggered to drive the airflow guiding mechanism to switch from one preset working position to another position and be locked. This process enables the direction of the ejected airflow to be self-adaptively adjusted, and finally an air floating boosting layer with a directional thrust component is formed in the gap. The scheme solves the contradiction between large friction and low energy efficiency of the traditional synchronous belt in the system level, and realizes the intelligent collaboration of friction reduction and boosting.

[0009] Preferably, the airflow guiding mechanism comprises a plurality of flow guiding members capable of swinging around their own axes, and a linkage swing arm for synchronously driving all the flow guiding members; the self-adaptive reversing driving mechanism comprises a trigger element fixedly connected with the driving shaft and synchronously rotating with the driving shaft, a driven element in transmission connection with the linkage swing arm, and an elastic reset member enabling the driven element to have a reset tendency to the trigger element.

[0010] By adopting the technical scheme, the core execution and control chain of the adaptive function of the application is formed, the airflow guiding mechanism adopts a plurality of guide members in a distributed layout, uniform and fine guidance of airflow of the long strip air outlet can be realized, the linkage swing arm ensures strict synchronization of movement of all guide members, overall consistency of airflow direction is ensured, the adaptive reversing driving mechanism provides a complete mechanical closed-loop control logic: the trigger element directly senses the rotational direction of the driving shaft as a fundamental state change, the driven element ensures reliable engagement or meshing with the trigger element when action is required under the pre-tightening force of the elastic return member, which is a guarantee of action response, so that the mechanism can be self-locked after switching to the position, without continuous energy consumption, interference can be resisted and position can be maintained, absolute stability of airflow direction in continuous operation is ensured, and the combination realizes the whole-process adaptive mechanical control from direction sensing to action execution to state maintenance.

[0011] Preferably, the trigger element is a gear ring fixed on the driving shaft, one end of the linkage swing arm close to the gear ring is provided with an L-shaped accommodation rod, and the driven element is a rack segment connected with the L-shaped accommodation rod close to the gear ring and capable of meshing with the gear ring, and the elastic return member is a return spring acting on the other end of the linkage swing arm.

[0012] By adopting the technical scheme, a specific, reliable and efficient trigger and reset implementation mode is provided, the gear ring is directly fixed on the driving shaft, so that the rotational direction is strictly corresponding to the transmission direction, and the signal source is direct and without delay. The rack segment is connected with the linkage swing arm, the meshing transmission mode directly converts the rotational movement of the driving shaft into a linear driving force of the linkage swing arm, the transmission is direct and efficient, and the return spring is arranged ingeniously: it acts on the other end of the linkage swing arm, the elastic force of the return spring is not directly pushing and pulling the rack segment, but generates a trend torque of the rack segment always moving towards the gear ring, when the gear ring reverses rotation, the gear ring tooth surface and the end of the rack segment can be temporarily disengaged, at this time, the rack segment can be quickly and automatically re-engaged with the gear ring under the torque of the return spring, to prepare for the next driving, the instantaneity and reliability of the reversing trigger action are ensured, and the structure is simple and compact.

[0013] Preferably, the linkage swing arm and each guide member are connected through a slot rod transmission structure, the slot rod transmission structure includes a driving piece with a driving slot fixedly arranged on the linkage swing arm, and each guide member is provided with a driven rod, and an end of the driven rod is provided with a matching part in sliding or rolling cooperation with the driving slot.

[0014] By adopting the technical scheme, the slot-rod transmission structure is a clever design for realizing one-to-many synchronous driving and motion form conversion. The driving slot is a fixed motion track, and its geometric shape directly determines the motion track of the driven rod, thereby accurately controlling the swing law of the flow guide. The driving piece on the linkage swing arm can synchronously drive the corresponding driven rod on the flow guide through a driving slot, ensuring the high consistency of the actions of multiple flow guides, which is crucial for forming uniform and stable directional airflow. The sliding or rolling fitting part (such as a sliding block or a roller) at the end of the driven rod reduces friction, making the motion smoother. This structure efficiently and compactly converts the limited displacement of the linkage swing arm into the accurate swing of multiple flow guides, which is a key mechanical interface for realizing the airflow guiding function.

[0015] Preferably, the driving slot is a straight slot or a curved slot.

[0016] By adopting the technical scheme, specific design freedom is provided for the shape of the driving slot. The straight slot is the simplest and most reliable form, which can realize a linear proportional relationship between the displacement of the linkage swing arm and the swing angle of the flow guide, is easy to process, and has predictable performance. The curved slot can realize more complex motion law design, for example, the flow guide can swing more gently at the start and end stages (reducing impact and vibration) and change faster in the middle section, thereby optimizing the dynamic characteristics of the airflow switching process. This provides the possibility of customizing the airflow guiding action characteristics according to specific application requirements.

[0017] Preferably, a support assembly for supporting the non-engagement area of the synchronous belt is further included, the support assembly includes a hollow profile and a synchronous belt blocking groove and a support plate fixed thereon, and the hollow profile, the synchronous belt blocking groove and the support plate are provided with corresponding air outlets; the hollow profile is sealed at both ends by a blocking plate, the flow guide is a flow guide swing block arranged in the inner cavity of the hollow profile, and part of the structure of the flow guide swing block is arranged adjacent to or partially inserted into the air outlet.

[0018] By adopting the technical scheme, the scheme realizes the trinity integration of air path, support and guiding function. The hollow profile has the functions of a structural support member and an airflow distribution main pipe. The inner cavity makes the gas pressure distribution more uniform, and the support plate provides a direct bearing surface for the synchronous belt. The air outlets provided on the support plate are the final channels for airflow ejection. The flow guide swing block is directly arranged in the inner cavity of the hollow profile, and the flow guide part thereof is close to or inserted into the air outlet, so that the airflow is accurately guided at the last moment before ejection, reducing flow passage loss and direction interference, greatly simplifying the overall structure, improving the space utilization rate, and protecting the airflow generating device, and the working environment is cleaner.

[0019] Preferably, the flow guide swing block is rotatably mounted on the inner wall of the hollow profile through a swing pivot, and the axis of the swing pivot is perpendicular to the moving direction of the synchronous belt.

[0020] By adopting the above technical solution, the core movement degree of freedom of the flow guide swing block is defined, the axis of the swing pivot is perpendicular to the moving direction of the synchronous belt, and the swing plane of the flow guide swing block is parallel to the moving direction of the synchronous belt, so that the flow guide swing block can most effectively change the horizontal component of the airflow in the moving direction of the synchronous belt, thereby realizing the direction switching of the auxiliary thrust. Meanwhile, the swing pivot perpendicular to the moving direction is also convenient for compact layout and installation in the long and narrow hollow profile.

[0021] Preferably, the air source is a high-pressure fan, the air supply channel includes a pipeline connecting the high-pressure fan and the hollow profile, and the internal cavity of the hollow profile constitutes an airflow distribution chamber.

[0022] By adopting the above technical solution, the selection of the stable air source and the airflow delivery path are defined, and the high-pressure fan can provide a continuous, stable and pressure-adjustable air source to meet the flow and pressure requirements for forming an air floating layer. The air supply channel formed by the pipeline and the internal cavity of the hollow profile can efficiently deliver the gas from the fan to each air outlet, and the internal cavity of the hollow profile as the airflow distribution chamber can effectively buffer and balance the airflow from the fan, thereby ensuring that the airflow pressure and flow of each air outlet along the entire length direction are relatively uniform, which is the basis for forming a stable and uniform air floating layer.

[0023] Preferably, the support plate is arranged opposite to the tooth surface of the synchronous belt to provide vertical support.

[0024] By adopting the above technical solution, the typical and advantageously significant application scenario of the present application is indicated, when used for vertical conveying (such as hollow glass and photovoltaic panels), the synchronous belt needs to support the side surface of the workpiece, the tooth surface bears the gravity of the workpiece, the support plate is arranged opposite to the tooth surface, and the main vertical support force is provided through the air floating layer formed in the middle to offset the gravity of the workpiece. This non-contact support completely avoids the sliding friction and wear and tear and precision decline problems caused by gravity in vertical conveying, and is particularly suitable for clean handling of large-size and high-quality plates.

[0025] Preferably, the driving motor is connected with a transmission shaft through a worm gear reducer, and the driving synchronous pulley is mounted on the driving shaft and connected with the transmission shaft through a shaft coupling.

[0026] By adopting the technical scheme, the worm and gear reducer can provide large reduction ratio and self-locking function, which is beneficial to realize accurate speed control and maintain position when power is off, and enhances stability and safety of the system. The transmission shaft, the shaft coupling and the driving synchronous pulley shaft constitute a standard power transmission path, which is mature and reliable in structure. The transmission chain provides stable and controllable original driving power and direction signal for the whole adaptive air floating boosting system.

[0027] The working principle and beneficial effects of the present application are as follows:

[0028] 1. Extremely low friction resistance and greatly improved bearing capacity: The stable air floating layer replaces solid contact, effectively eliminating sliding friction under heavy load, enabling the device to drive loads far exceeding traditional designs, with no wear and long service life.

[0029] 2. Intelligent auxiliary boosting and significant energy saving effect: The airflow direction changes adaptively with the transmission direction, providing auxiliary thrust while reducing friction, directly reducing the load of the main drive motor, especially in the case of frequent start-stop and reciprocating motion, the energy saving effect is particularly prominent.

[0030] 3. Excellent motion precision and stability: Air floating lubrication avoids the stick-slip phenomenon of traditional sliding friction, making the transmission extremely smooth and free of shaking, combined with the improvement of auxiliary thrust on dynamic response, achieving high positioning accuracy and running stability under high load.

[0031] 4. Strong adaptability and high reliability: The pure mechanical trigger, reset and positioning mechanism does not require additional sensors and complex electrical control, and can realize real-time, reliable and automatic synchronization of airflow direction and transmission direction, with fast response and solid and durable structure.

[0032] 5. Compact structure and high integration: The air path system, guide mechanism and transmission system are deeply integrated, especially the slot rod transmission structure realizes compact and synchronous driving of multiple guide flow units, with high space utilization of the overall device.

[0033] 6. Clean and environmentally friendly, maintenance-free: Using compressed air as the working medium, there is no oil pollution, fully meeting the stringent requirements of high cleanliness industries such as photovoltaic, electronics, hollow glass and food, and eliminating the traditional lubrication and maintenance work. BRIEF DESCRIPTION OF DRAWINGS

[0034] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0035] Figure 1 is a front perspective structure schematic diagram of an installation scene of the present application;

[0036] Figure 2 is a back perspective structure schematic diagram of the present application in Figure 1 .

[0037] Figure 3 The exploded structure schematic diagram of the present application;

[0038] Figure 4 The combined structure schematic diagram of the present application;

[0039] Figure 5 The hollow profile structure schematic diagram of the present application;

[0040] Figure 6 The hollow profile internal structure schematic diagram of the present application;

[0041] Figure 7 The enlarged structure schematic diagram of the present application at A; Figure 6 The enlarged structure schematic diagram of the present application at A;

[0042] Figure 8 The structure schematic diagram of the linkage swing arm of the present application.

[0043] The marks of various features in the drawings are as follows:

[0044] 100, rack; 110, driving motor; 120, driving synchronous pulley; 130, driven synchronous pulley; 140, synchronous belt; 150, driving shaft; 200, air path system; 210, air source; 220, air feeding channel; 230, air outlet; 300, air flow guiding mechanism; 310, flow guiding piece; 320, linkage swing arm; 330, L-shaped accommodation rod; 340, swing pivot; 400, self-adaptive reversing driving mechanism; 410, gear ring; 420, rack segment; 430, return spring; 500, slot-rod transmission structure; 510, driving slot; 520, driving piece; 530, driven rod; 600, support assembly; 610, hollow profile; 611, air flow distribution chamber; 620, synchronous belt blocking slot; 630, support plate; 640, blocking plate; 700, worm gear reducer; 800, transmission shaft; 900, coupling. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the present application.

[0046] Reference Figures 1 to 8 The present embodiment provides a kind of for vertical glass substrate and the plate conveying of plate material with self-adaptive air flow guiding function air floating type transmission.

[0047] I. Overall structure and basic transmission part

[0048] As Figure 1 and Figure 2 shown, the device includes a rigid frame 100 composed of profiled sections welded or assembled together, such as a tilted frame body for conveying glass, a driving motor 110 is fixedly installed at a proper position of the frame 100, the output end of the driving motor 110 is connected with a worm gear reducer 700, which realizes deceleration and torque increase and has self-locking characteristics, the output end of the worm gear reducer 700 is connected with one side of a transmission shaft 800 through a coupling 900, the other side of the coupling 900 is connected with a driving shaft 150.

[0049] Referring to Figures 3-5 , a driving synchronous pulley 120 is installed on the driving shaft 150, at least one driven synchronous pulley 130 is rotatably installed on the other end of the frame 100 through its axle, a synchronous belt 140 is wound around the driving synchronous pulley 120 and the driven synchronous pulley 130, the driving shaft 150 is coaxially connected with the aforementioned transmission shaft 800 through another coupling 900, so as to finally transmit power to the driving synchronous pulley 120.

[0050] II. Support assembly and air path system

[0051] As Figure 3 shown, the device includes a key support assembly 600 for supporting the non-engaged area of the upper part of the synchronous belt 140. The support assembly 600 mainly includes a long strip-shaped hollow profile 610 extending in the conveying direction. The two ends of the hollow profile 610 are sealed by baffles 640, and the upper surface of the hollow profile 610 is fixedly installed with a support plate 630 through fasteners. The top surface of the support plate 630 serves as a support surface opposite to the tooth surface of the synchronous belt 140, and a continuous or intermittent narrow gas outlet 230 is processed on the support plate 630 along its length direction. Correspondingly, holes or grooves are also provided in the top wall of the hollow profile 610 for communication. A synchronous belt blocking groove 620 is installed between the support plate 630 and the hollow profile 610, which is used to limit the lateral deviation of the synchronous belt 140.

[0052] As Figure 2 and Figure 3 , the air path system 200 is used to provide the gas required to form the air floating layer. The air source 210 is preferably a high-pressure fan, and its outlet is connected through a pipeline. The gas supply channel 220 includes a soft tube or hard tube connected to the air source 210, and the internal cavity of the hollow profile 610, which constitutes a gas flow distribution chamber 611. The high-pressure gas from the air source 210 enters the gas flow distribution chamber 611 through the gas supply channel 220, and is evenly distributed in terms of pressure and flow rate. Finally, it is sprayed upward through the gas outlet 230 on the support plate 630, and is directed to the tiny gap between the tooth surface of the synchronous belt 140 and the top surface of the support plate 630.

[0053] III. Airflow guiding mechanism and its driving

[0054] To realize the self-adaptive adjustment of the airflow direction, the device is provided with an airflow guiding mechanism 300 and a self-adaptive reversing driving mechanism 400.

[0055] As shown in Figure 5 and Figure 6 , the core of the airflow guiding mechanism 300 is a plurality of flow guiding members 310. In the present embodiment, the flow guiding members 310 are flow line-shaped section flow guiding swing blocks. The plurality of flow guiding swing blocks are arranged in the inner cavity of the hollow profile 610, i.e. the airflow distribution chamber 611, along the length direction of the hollow profile 610. Each flow guiding swing block is rotatably installed on the opposite inner wall of the hollow profile 610 through a swing shaft 340. The axis direction of the swing shaft 340 is arranged to be perpendicular to the moving direction of the synchronous belt 140. The top of the flow guiding swing block extends to the position close to or slightly extending into the air outlet 230 of the support plate 630. The bottom of the flow guiding swing block extends downward.

[0056] The synchronous swing of all the flow guiding swing blocks is controlled by a linkage swing arm 320. The linkage swing arm 320 is located below all the flow guiding swing blocks, and is arranged inside the hollow profile 610. The linkage swing arm 320 is connected with each flow guiding swing block through a groove rod transmission structure 500.

[0057] Referring to Figure 7 , a driving piece 520 is fixedly installed on the linkage swing arm 320, and a driving groove 510 is formed in the driving piece 520. In the present embodiment, the driving groove 510 is a straight groove. The bottom of each flow guiding swing block is fixedly connected with a driven rod 530, and the end of the driven rod 530 is provided with a matching part, which is preferably a roller or a bearing. The matching part is embedded in the driving groove 510 and can slide or roll along the groove. Therefore, the left and right movement of the linkage swing arm 320 will push the matching part at the end of all the driven rods 530 to swing through the side wall of the driving groove 510, so as to synchronously and accurately drive all the flow guiding swing blocks to rotate around the respective swing shafts 340.

[0058] Referring to Figure 8 , the end of the linkage swing arm 320 close to the driving synchronous pulley 120 can be designed to have an L-shaped accommodation rod 330, which can move out of the hollow profile 610. The corresponding hollow profile 610 is provided with a hole for the movement of the L-shaped accommodation rod 330, which facilitates the connection with the drive shaft 150 on the side surface and does not hinder the rotation of the driving synchronous pulley 120. The rack segment 420 is connected to the end of the L-shaped accommodation rod 330 to ensure the stable meshing track of the rack segment 420 and the gear ring 410.

[0059] IV. Working principle of the self-adaptive reversing driving mechanism

[0060] As shown in Figure 6As shown, the adaptive reversing drive mechanism 400 is the core control mechanism connecting the rotation direction of the drive shaft 150 and the position of the linkage swing arm 320.

[0061] The mechanism includes: a gear ring 410 as a trigger element, coaxially fixed on the drive shaft 150 and rotates synchronously with the drive shaft 150; a rack segment 420 as a driven element, arranged at the end of the L-shaped accommodation lever 330 and can be engaged with the gear ring 410 under the action of reset; a reset spring 430 as an elastic reset element, arranged between the linkage swing arm 320 and the end of the hollow profile 610, providing the linkage swing arm 320 with an elastic torque to drive the rack segment 420 to move towards the gear ring 410.

[0062] The working process is described in detail as follows:

[0063] Referring to Figure 3 and Figure 4 , the initial / left running working state of the synchronous belt 140, assuming that the system is started, the drive motor 110 controls the drive shaft 150 to rotate counterclockwise, driving the synchronous belt 140 to move left. At this time, the adaptive reversing drive mechanism 400 has made the linkage swing arm 320 at the right limit working position, at which the gear ring 410 rotates idly with the shaft, and the end of the rack segment 420 keeps in contact or close to the tooth surface of the gear ring 410 under the pre-tightening torque of the reset spring 430. Through the transmission of the slot lever transmission structure 500, the guide swing block is swung to a certain angle, so that the top guide surface thereof mainly guides the airflow from the air outlet 230 to the left. The ejected gas forms an air floating layer between the tooth surface of the synchronous belt 140 and the support plate 630, and its resultant force can be decomposed into a vertical upward supporting force and a horizontal left auxiliary thrust.

[0064] Reversing trigger and switching process (left running→right running):

[0065] When the control system commands the drive motor 110 to reverse, the rotation direction of the drive shaft 150 changes to clockwise. The gear ring 410 fixed thereon immediately rotates clockwise, and under the continuous recovery torque of the reset spring 430, the linkage swing arm 320 drives the rack segment 420 to quickly reset, so that it re-engages with the clockwise rotating gear ring 410.

[0066] Driving and locking in place:

[0067] After engaging, the clockwise rotating gear ring 410 drives the linkage swing arm 320 to start swinging from its right limit working position to the left limit working position through the rack segment 420. The swinging of the linkage swing arm 320 acts on the driven rods 530 of all the flow guide swing blocks through the driving grooves 510 on the driving pieces 520, forcing all the flow guide swing blocks to swing in the other direction synchronously around their swing shafts 340, and the angles of all the flow guide swing blocks have been switched, the top flow guide surfaces of all the flow guide swing blocks will guide the airflow mainly to the right side, at the same time, as the linkage swing arm 320 reaches the new position, the rack segment 420 completes the stroke and disengages from the gear ring 410. The system enters the stable right running working state from here, the airflow provides vertical supporting force and horizontal right auxiliary thrust.

[0068] Reverse switching (right running→left running):

[0069] When it is needed to switch to left running again, the process is opposite to the above. The driving shaft 150 rotates counterclockwise, the gear ring 410 rotates counterclockwise. The reset spring 430 promotes the rack segment 420 to engage with the gear ring 410, and the driving linkage swing arm 320 swings from the left limit working position to the right limit working position, and the angles of the flow guide swing blocks and the direction of the airflow are switched to the left side.

[0070] The application realizes pure mechanical and fully automatic self-adaptive air floating assistance through the above specific structure. In the whole process, the switching of the airflow direction and the change of the transmission direction are strictly synchronous and respond quickly, the air floating layer significantly reduces the friction and wear, and the auxiliary thrust provided by the directional airflow directly reduces the load of the driving motor 110, realizing high efficiency and energy saving. The high-pressure fan, i.e. the air source 210, can also be adjusted in start and stop and air pressure by the PLC control system according to the load size, and is closed in light load to further save energy consumption.

[0071] The above is only the preferred embodiment of the application, and is not used to limit the application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. An air floating transmission device with self-adaptive airflow guiding function, comprising a frame (100), a driving motor (110) arranged on the frame (100), at least one driving synchronous pulley (120) driven by the driving motor (110), at least one driven synchronous pulley (130), and a synchronous belt (140) wound around the driving synchronous pulley (120) and the driven synchronous pulley (130), characterized in that, Also include: A support assembly (600) for supporting the non-engagement area of the synchronous belt (140), the support assembly (600) comprising a hollow profile (610) and a synchronous belt blocking groove (620) and a support plate (630) fixed thereon; An air path system (200) comprising an air source (210) and an air supply channel (220), the air supply channel (220) having an air outlet (230) pointing to the gap between the tooth surface of the synchronous belt (140) and the top surface of the support plate (630); An air flow guide mechanism (300) arranged on the air supply channel (220) and capable of changing the direction of the air flow ejected from the air outlet (230); An adaptive reversing driving mechanism (400) connected between the air flow guide mechanism (300) and the drive shaft (150) of the driving synchronous pulley (120); the adaptive reversing driving mechanism (400) is configured to: in response to the change of the rotation direction of the drive shaft (150), drive the air flow guide mechanism (300) to switch and remain between at least two working positions corresponding to different synchronous belt (140) moving directions, so as to adaptively adjust the air flow direction to form an air floating layer in the gap for reducing friction and generating auxiliary thrust in the same direction as the moving direction; The air flow guide mechanism (300) comprises a plurality of guide members (310) capable of oscillating around their own axes, and a linkage swing arm (320) for synchronously driving all the guide members (310); the adaptive reversing driving mechanism (400) comprises a trigger element fixedly connected with the drive shaft (150) and synchronously rotating therewith, a driven element in transmission connection with the linkage swing arm (320), and an elastic reset member enabling the driven element to have a reset tendency to the trigger element.

2. The air floating type transmission device having a self-adapting air flow guiding function according to claim 1, characterized in that: The trigger element is a gear ring (410) fixed on the drive shaft (150); one end of the linkage swing arm (320) close to the gear ring (410) is provided with an L-shaped accommodation rod (330), and the driven element is a rack segment (420) connected with one end of the L-shaped accommodation rod (330) close to the gear ring (410) and capable of engaging with the gear ring (410); the elastic reset member is a reset spring (430) acting on the other end of the linkage swing arm (320).

3. The air floating type transmission device with self-adapting airflow guiding function according to claim 1, characterized in that: The linkage swing arm (320) and each guide member (310) are connected through a slot rod transmission structure (500); the slot rod transmission structure (500) comprises a driving piece (520) fixedly provided with a driving slot (510) on the linkage swing arm (320), and each guide member (310) is provided with a driven rod (530), and the end of the driven rod (530) is provided with a matching part in sliding or rolling cooperation with the driving slot (510).

4. The air floating type transmission device having a self-adapting airflow guiding function according to claim 3, characterized in that: The driving slot (510) is a straight slot or a curved slot.

5. The air floating type transmission device having a self-adapting airflow guiding function according to any one of claims 1 to 4, characterized in that: The hollow profile (610), the synchronous belt blocking groove (620) and the support plate (630) are provided with corresponding air outlets (230); the hollow profile (610) is sealed by the baffle (640) at both ends, the flow guide swing block is arranged in the inner cavity of the hollow profile (610), and part of the structure of the flow guide swing block is arranged adjacent to or partially extends into the air outlet (230).

6. The air floating type transmission device having a self-adapting air flow guiding function according to claim 5, characterized in that: The flow guide swing block is rotatably installed on the inner wall of the hollow profile (610) through a swing shaft (340), and the axis direction of the swing shaft (340) is perpendicular to the moving direction of the synchronous belt (140).

7. The air floating type transmission device having a self-adapting air flow guiding function according to claim 5, characterized in that: The air source (210) is a high-pressure fan, the air supply channel (220) comprises a pipeline connecting the high-pressure fan and the hollow profile (610), and the internal cavity of the hollow profile (610) constitutes an air flow distribution chamber (611).

8. The air floating type transmission device having a self-adapting air flow guiding function according to claim 5, characterized in that: The support plate (630) is arranged opposite to the tooth surface of the synchronous belt (140) and is used for providing vertical support.

9. The air floating type transmission device having a self-adapting air flow guiding function according to claim 1, characterized in that: The driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800) through a worm gear reducer (700), the driving motor (110) is connected with the transmission shaft (800

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