Bearing device

Abstract

The utility model provides a bearing device which is used for bearing a carrier and comprises a rotating shaft fixing seat and a rotating shaft. The rotating shaft is rotationally installed in the rotating shaft fixing base and used for being in transmission connection with a carrier to drive the carrier to rotate, a first air channel is formed in the rotating shaft, a first air opening is formed in the side wall of the rotating shaft, a second air opening is formed in the upper end of the rotating shaft, and the first air opening and the second air opening both communicate with the first air channel. According to the bearing device, the first air port is used for communicating with the air source, the second air port is used for supplying air to the carrier, and an air inlet structure is prevented from being additionally arranged above or below the rotating shaft, so that the overall height of the bearing device is reduced, and the bearing device can better adapt to some working environments with limited space when being installed and used.

Description

Technical Field

[0001] This application relates to the fields of industrial manufacturing and testing technology, and in particular to a support device. Background Technology

[0002] In industrial production, such as during the assembly of mobile phones and computers, when it is necessary to check whether the assembly of the mobile phone screen and the body is accurate, a 5-DOF (XYZRA) inspection module is usually used to conduct comprehensive inspection of the product.

[0003] The 5-DOF (XYZRA) inspection module includes a support device and a carrier. The support device is used to support the carrier, and the carrier is used to support the workpiece to be inspected. The support device can support the carrier to rotate around the R-axis or flip around the A-axis. In order to ensure that the workpiece to be inspected can be stably positioned on the support device, a pneumatic clamping structure needs to be set on the carrier to clamp the workpiece to be inspected. Therefore, the support device usually needs to be connected to an air circuit to supply air to the carrier.

[0004] In related technologies, air inlets are usually opened from the bottom of the bearing device, and the air passage runs through the bearing device and connects to the carrier. Air sources and other components are located below the bearing device, resulting in a relatively high bearing device that occupies a large space in the vertical direction, which is not conducive to the layout of other related components that cooperate with the bearing device. Utility Model Content

[0005] This application discloses a support device that enables the support device to have a compact structure and improve space utilization.

[0006] To achieve the above objectives, this application discloses a carrying device, a carrier for carrying a piece to be tested, comprising:

[0007] Rotary shaft mounting base;

[0008] A rotating shaft is rotatably mounted in a rotating shaft mounting base. The rotating shaft is used for transmission connection with the vehicle to drive the vehicle to rotate. A first air passage is provided inside the rotating shaft, and a first air port is provided on the side wall of the rotating shaft. A second air port is provided at the upper end of the rotating shaft. Both the first air port and the second air port are connected to the first air passage. The first air port is used to connect with an air source, and the second air port is used to supply air to the vehicle.

[0009] Optionally, a third air port is provided on the side wall of the rotating shaft fixing seat, the third air port is connected to the first air port, and the first air port is connected to the air source through the third air port.

[0010] Optionally, the rotating shaft is provided with an air passage groove surrounding the outer peripheral wall of the rotating shaft. The air passage groove corresponds to and communicates with the third air port in the radial direction of the rotating shaft. The first air port is disposed in the air passage groove so that the gas entering through the third air port can pass through the air passage groove and the first air port in sequence to enter the first air passage.

[0011] Optionally, a sealing ring is provided between the rotating shaft and the rotating shaft fixing seat, and the sealing ring is located on the upper and lower sides of the air passage groove.

[0012] Optionally, the air passage grooves are multiple, and the multiple air passage grooves are arranged at intervals along the vertical direction. Each air passage groove is provided with a sealing ring on both the upper and lower sides.

[0013] Optionally, both the first air port and the second air port have multiple ports, and the hollow inner cavity of the rotating shaft forms the first air passage.

[0014] Optionally, there are multiple first air ports, second air ports, and first air passages, and the multiple first air passages are independent of each other. Each first air passage is connected to at least one first air port and at least one second air port.

[0015] Optionally, the carrying device includes a carrier mounting component, which is mounted on the upper end of the rotating shaft. The carrier is mounted on the rotating shaft via the carrier mounting component. A fourth air port is provided on the carrier mounting component, which communicates with the second air port and is connected to the driving air circuit of the carrier.

[0016] Optionally, the rotating shaft is rotatably mounted in the rotating shaft mounting base via bearings, and the bearings include two bearings, which are respectively located near the upper and lower ends of the rotating shaft.

[0017] Optionally, a connecting flange is provided at the lower end of the rotating shaft fixing seat;

[0018] The supporting device further includes a bracket, which includes a mounting plate with a mounting through hole. The rotating shaft fixing seat passes through the mounting through hole in a vertical direction, and the upper surface of the connecting flange is in contact with the lower surface of the mounting plate. The fastener is connected in a vertical direction to the flange and the opening of the mounting through hole.

[0019] Compared with the prior art, the beneficial effects of this application are as follows:

[0020] By placing the first air inlet on the side wall of the rotating shaft, from a spatial layout perspective, it avoids the need for additional air intake structures above or below the rotating shaft, thereby significantly reducing the overall height of the support device. This allows the support device to better adapt to some space-constrained working environments during installation and use, such as in some miniaturized testing equipment or automated production lines. It can effectively utilize limited vertical space, facilitating the overall layout and compact installation of the equipment. Furthermore, the reduced height of the support device makes it easier to integrate and cooperate with other peripheral components, such as sensors, drivers, and transmission devices, which helps to improve the integration and coordination of the entire system and reduce problems such as equipment layout difficulties and complex piping caused by spatial conflicts. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a carrying device provided in an embodiment of this application;

[0023] Figure 2 This is a front view of the carrier device provided in the embodiments of this application;

[0024] Figure 3 This is a schematic diagram of the rotating shaft being installed within a rotating shaft mounting system in an embodiment of this application;

[0025] Figure 4 This is a schematic diagram of the rotation axis provided in an embodiment of this application;

[0026] Figure 5 This is a schematic diagram of the rotary shaft mounting base provided in an embodiment of this application;

[0027] Figure 6 This is a front view of the rotating shaft installed within the rotating shaft mounting in an embodiment of this application;

[0028] Figure 7 yes Figure 6 A schematic diagram at point AA;

[0029] Figure 8 This is a schematic diagram of the vehicle mounting component provided in the embodiments of this application.

[0030] Explanation of main figure symbols

[0031] 1-Bearing device;

[0032] 10-Drive components;

[0033] 20 - Synchronous belt; 21 - Synchronous pulley;

[0034] 100 - Rotary shaft mounting base; 110 - Third air port; 120 - Connecting flange;

[0035] 200 - Rotary shaft; 210 - First air port; 220 - Second air port; 230 - Air passage groove;

[0036] 300 - Sealing ring;

[0037] 400 - Vehicle mounting component; 410 - Fourth air port;

[0038] 500-Bearing;

[0039] 600 - Bracket; 610 - Mounting plate. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0042] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain circumstances to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0043] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0044] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components whose specific types and structures may be the same or different, and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0045] As mentioned in the background section, in the prior art, the air inlet is usually opened from the bottom of the bearing device, the air passage runs through the bearing device and connects to the pneumatic vehicle, and the air source and other components are all located below the bearing device, resulting in a high bearing device and occupying a large space in the vertical direction, which is not conducive to the layout of other related components that cooperate with the bearing device.

[0046] To address the aforementioned issues, this application provides a support device that avoids the need for additional air intake structures above or below the rotating shaft, thereby significantly reducing the overall height of the support device. This allows the support device to effectively utilize limited vertical space during installation and use, facilitating the overall layout and compact installation of the equipment.

[0047] The technical solution of this application will be further described below with reference to specific embodiments and accompanying drawings.

[0048] See Figures 1 to 4 This embodiment provides a carrying device 1 for carrying a vehicle. The carrying device 1 includes a rotating shaft fixing seat 100 and a rotating shaft 200. The rotating shaft 200 is rotatably installed in the rotating shaft fixing seat 100 and is used to drive the vehicle to rotate. A first air passage is provided inside the rotating shaft 200. A first air port 210 is provided on the side wall of the rotating shaft 200. A second air port 220 is provided at the upper end of the rotating shaft 200. Both the first air port 210 and the second air port 220 are connected to the first air passage. The first air port 210 is used to connect to an air source, and the second air port 220 is used to supply air to the vehicle.

[0049] The connection between the first air port 210 and the air source can be direct or indirect, and is not limited here. In this embodiment, a pneumatic vehicle is used as an example for explanation.

[0050] The gas supplied by the gas source, depending on the specific connection method, is either directly connected to the first air port 210 on the side wall of the rotating shaft 200 through an air pipe, or indirectly connected to the first air port 210 through other intermediate pneumatic components. After the gas enters the first air passage inside the rotating shaft 200 from the first air port 210, a certain airflow will be formed in the air passage. Since the first air passage is a channel that runs through the rotating shaft 200, the gas can be transported along the axial direction of the rotating shaft 200. When the rotating shaft 200 rotates, the continuity of the first air passage ensures that the gas flow will not be interrupted due to rotation, but will be continuously transported in the air passage. The gas in the first air passage eventually flows to the second air port 220 at the upper end of the rotating shaft 200. After being discharged from the second air port 220, it directly enters the carrier. The gas entering the carrier will be distributed to different air chambers or pneumatic components according to the specific design and functional requirements of the carrier, thereby driving the carrier to complete the corresponding actions, such as clamping, positioning, and moving the workpiece to be tested.

[0051] In this embodiment, by setting the first air inlet 210 on the side wall of the rotating shaft 200, from a spatial layout perspective, it avoids setting additional air intake structures above or below the rotating shaft 200, thereby significantly reducing the overall height of the support device 1. This allows the support device 1 to better adapt to some space-constrained working environments during installation and use, such as in some miniaturized testing equipment or automated production lines. It can effectively utilize limited vertical space, facilitating the overall layout and compact installation of the equipment. Furthermore, the reduced height of the support device 1 makes it easier to integrate and cooperate with other peripheral components, such as sensors, drivers, and transmission devices, which helps to improve the integration and coordination of the entire system and reduce problems such as equipment layout difficulties and complex pipeline lines caused by spatial conflicts.

[0052] Furthermore, the reduced height of the bearing device 1 lowers its center of gravity. When the rotating shaft 200 drives the carrier to rotate, the lower center of gravity enhances the stability of the entire bearing device 1. Especially when rotating at high speed or carrying a heavy test piece, it can effectively reduce the vibration and shaking of the device, ensure the accuracy and reliability of the testing process, and reduce the risk of damage to the test piece or increased testing error caused by shaking.

[0053] For example, since placing the first air port 210 on the side wall of the rotating shaft 200 has effectively reduced the overall height of the bearing device 1, there is extra space at the bottom of the rotating shaft 200 to install an electric slip ring, so that the rotating shaft 200 can transmit electrical signals to the outside in the rotating state through the electric slip ring, creating conditions for better collaborative work between the components of the whole system, further improving the integration and coordination of the system, and reducing various problems caused by difficulties in electrical connection layout.

[0054] In one possible embodiment, see Figure 3 , Figure 4 and Figure 5 A third air port 110 is provided on the side wall of the rotating shaft fixing seat 100. The third air port 110 is connected to the first air port 210, and the first air port 210 is connected to the air source through the third air port 110.

[0055] In equipment environments with complex spatial layouts, the air source can be flexibly connected from the third air port 110 on the side wall of the rotating shaft fixing seat 100, depending on the surrounding equipment and pipeline routing, instead of being limited to direct connection from the first air port 210 of the rotating shaft 200. This makes more efficient use of the internal space of the equipment and avoids pipeline layout difficulties caused by the limited location of the air source interface. Compared to directly connecting the air source from the first air port 210 of the rotating shaft 200, shifting the connection point to the third air port 110 on the side wall of the rotating shaft fixing seat 100 makes it easier for maintenance personnel to access and operate the connection part when performing air source-related maintenance operations. It also provides convenience when performing maintenance work such as periodically checking for air leaks, cleaning air ports, or replacing seals during equipment operation, reducing the operational difficulty and workload of maintenance personnel.

[0056] Furthermore, the third air port 110 is connected to the first air port 210, providing a smoother transition path for the gas to enter the rotating shaft 200. The gas from the gas source first enters the rotating shaft fixing seat 100 through the third air port 110, and then flows to the first air port 210 of the rotating shaft 200. This indirect connection method helps to reduce the turbulence caused by direct impact or pressure change when the gas enters the rotating shaft 200, making the gas flow in the first air channel more stable, which is beneficial to improving the stability and uniformity of gas transmission.

[0057] In one possible embodiment, see Figure 4 The rotating shaft 200 is provided with an air passage groove 230 surrounding the outer peripheral wall of the rotating shaft 200. The air passage groove 230 corresponds to and communicates with the third air port 110 in the radial direction of the rotating shaft 200. The first air port 210 is provided in the air passage groove 230 so that the gas entering from the third air port 110 can pass through the air passage groove 230 and the first air port 210 in sequence to enter the first air passage.

[0058] By arranging the air passage 230 around the outer peripheral wall of the rotating shaft 200, the area for gas to enter the rotating shaft 200 is increased compared to a single air inlet. When gas flows in from the third air inlet 110, it can enter the interior of the rotating shaft 200 more smoothly through the larger area of ​​the air passage 230, avoiding gas congestion that may occur due to a small air inlet area. This helps to increase the gas intake flow rate, ensuring sufficient gas supply to the vehicle. Furthermore, since the air passage 230 is distributed around the perimeter, the gas can flow in more evenly along the circumferential direction when entering the rotating shaft 200, ensuring the uniformity of gas distribution within the first air passage. This avoids the problem of uneven gas pressure caused by excessive or insufficient local air intake, which is beneficial for the vehicle to obtain a stable and uniform air pressure supply in all parts of the circumference, thereby stably completing the corresponding actions.

[0059] Furthermore, the presence of the air passage 230 provides a buffer zone for gas to enter the rotating shaft 200. After the gas flows in from the third air port 110, it first enters the air passage 230, where the gas flow rate and direction can be regulated to a certain extent, making the originally rapid and turbulent airflow relatively smooth and orderly. Then, it enters the first air passage through the first air port 210. This buffering effect helps to reduce the impact force and turbulence of the airflow when entering the first air passage, further improving the stability of the gas transmission process and ensuring the stable and reliable air pressure when the vehicle is working.

[0060] Furthermore, during the continuous rotation of the rotating shaft 200, since the air passage 230 is arranged in a circumferential manner, it can maintain a good corresponding communication relationship with the third air port 110 on the side wall of the fixed seat, regardless of the angle to which the rotating shaft 200 rotates. This ensures that gas can continuously enter the interior of the rotating shaft 200 from the third air port 110 through the air passage 230 during rotation, effectively solving the problem of gas connection interruption or instability during rotation. This greatly enhances the gas supply adaptability of the bearing device 1 under rotating conditions and ensures normal gas supply to the vehicle during rotation operation.

[0061] In one possible embodiment, the air passage 230 is provided with a plurality of first air ports 210.

[0062] Multiple first air ports 210 increase the number of channels for gas to enter the rotating shaft 200. Compared to a single air port, more gas can be allowed to enter per unit time, thereby effectively increasing the gas intake flow rate and ensuring sufficient gas supply for the carrier to meet its gas requirements during operation, ensuring its efficient operation. Furthermore, the multiple first air ports 210 are distributed along the air passage 230, allowing the gas to be more evenly distributed in the air passage 230 and the first air passage when entering the rotating shaft 200. This avoids the situation where gas may concentrate in a local area due to a single first air port 210, causing excessively high pressure in that area and insufficient pressure in other areas. This uniform gas distribution helps maintain the pressure balance of the entire pneumatic system, enabling the carrier to obtain stable and consistent air pressure in all parts, thereby ensuring its operational stability and reliability, and improving the load-bearing capacity and operational accuracy of the workpiece to be tested.

[0063] In addition, when the rotating shaft 200 rotates, the arrangement of multiple first air ports 210 ensures that there are enough air ports to keep connected to the air source at any rotation angle, thereby achieving a continuous and stable air supply. This allows the vehicle to work normally during rotation without interruption or instability of air supply due to rotation, thus enhancing the adaptability of the bearing device 1 to rotation conditions.

[0064] In one possible embodiment, see Figure 4 , Figure 6 as well as Figure 7 A sealing ring 300 is provided between the rotating shaft 200 and the mounting base, and the sealing ring 300 is located on the upper and lower sides of the air passage groove 230.

[0065] Since the gas enters the rotating shaft 200 through the air passage 230, without a good seal, the gas can easily leak out from these gaps, causing the air pressure to drop and failing to provide sufficient power and pressure to the vehicle. The sealing ring 300 can prevent the gas from leaking from the upper and lower sides of the air passage 230, ensuring that the gas flows along the predetermined air passage 230 and air passage path, thereby ensuring the stability of the gas pressure and flow of the pneumatic system and enabling the vehicle to work normally.

[0066] Furthermore, while providing a seal, the sealing ring 300 also provides lubrication and buffering between the rotating shaft 200 and its mounting base. During the rotation of the rotating shaft 200, friction occurs between the sealing ring 300 and its mounting base. Without proper lubrication and protection, wear can easily occur, affecting the service life and rotational accuracy of the rotating shaft 200. The sealing ring 300 is usually made of materials with certain lubricating properties, such as rubber or plastic. It can form a thin lubricating film between the rotating shaft 200 and its mounting base, reducing direct friction between them, thereby reducing wear and extending the service life of the rotating shaft 200 and its mounting base.

[0067] In one possible embodiment, see Figure 4 , Figure 6 as well as Figure 7 The air passage 230 has multiple air passages 230, which are arranged at intervals in the vertical direction. Each air passage 230 has a sealing ring 300 on both the upper and lower sides.

[0068] Multiple air passages 230 are arranged vertically at intervals, opening up multiple parallel channels for gas to enter the rotating shaft 200. Different air passages 230 can flexibly allocate the air intake according to the actual working conditions such as gas source pressure, flow rate, and the gas demand of the vehicle. For example, when the vehicle needs a large gas flow rate under certain specific working conditions, multiple air passages 230 can simultaneously intake air to meet the high flow rate requirement. Under normal working conditions, the intake volume can be precisely adjusted by intake through some air passages 230, making the gas supply more in line with the actual working requirements and improving the adaptability and controllability of the entire gas transmission system.

[0069] Moreover, compared to a single air passage 230, multiple air passages 230 can further increase the effective area for gas to enter the rotating shaft 200, which helps to improve the gas intake efficiency and ensure that the vehicle can be provided with a sufficient and stable air source under various complex working conditions, thus ensuring its stable operation.

[0070] In addition, each air passage groove 230 is provided with sealing rings 300 on both the upper and lower sides. This multi-seal design enhances the sealing performance between the entire rotating shaft 200 and the mounting base. The sealing rings 300 can effectively fill the tiny gaps between the rotating shaft 200 and the mounting base, preventing gas from leaking out from the upper and lower edges of the air passage groove 230. Even if one sealing ring 300 is slightly aged or worn, the other intact sealing rings 300 can still play a sealing role, forming a layer-by-layer protective sealing system, minimizing the possibility of gas leakage, ensuring that the gas flows accurately along the predetermined air passage groove 230 and air passage path, and maintaining stable air pressure and flow of the pneumatic system.

[0071] In one possible embodiment, both the first air port 210 and the second air port 220 have multiple ports, and the hollow inner cavity of the rotating shaft 200 forms the first air passage.

[0072] Multiple first air ports 210 increase the inlet area for gas to enter the rotating shaft 200, allowing more gas to enter the first air passage per unit time under the same gas source pressure, thereby increasing the overall gas flow rate. Multiple second air ports 220 help to distribute the gas more evenly in the carrier, avoiding local insufficient gas supply or uneven pressure. Furthermore, by controlling the number or degree of opening of the first air ports 210, the intake volume can be precisely adjusted in stages. For example, if there are 3 first air ports 210, each designed to provide a certain fixed flow rate of gas, then by opening 1, 2, 3 air ports in sequence, different levels of intake volume can be accurately obtained to meet the detailed requirements of the carrier device 1 for intake volume under different working conditions.

[0073] In one possible embodiment, there are multiple first air ports 210, second air ports 220 and first air passages, and the multiple first air passages are independent of each other. Each first air passage is connected to at least one first air port 210 and at least one second air port 220.

[0074] Each independent first air passage can control the gas flow and pressure independently without interfering with each other. This allows for precise gas supply adjustment to the pneumatic components or working areas connected to each first air passage in complex pneumatic systems, according to different working requirements, thereby achieving more precise motion control and working parameter settings.

[0075] In addition, multiple independent first air passages can simultaneously support a variety of different pneumatic functions or operations. For example, in a device with multiple working modes, different air passages can provide gas power for different working parts or actions, enabling the carrier device 1 to flexibly switch between different modes and perform multiple tasks in parallel, thereby improving the device's versatility and adaptability.

[0076] In one possible embodiment, see Figure 1 and Figure 8 The carrying device 1 includes a carrier mounting component 400, which is mounted on the upper end of the rotating shaft 200. The carrier is mounted on the rotating shaft 200 through the carrier mounting component 400. A fourth air port 410 is provided on the carrier mounting component 400. The fourth air port 410 is connected to the second air port 220 and is connected to the driving air circuit of the carrier.

[0077] The driving air passage can be connected to the clamping structure on the carrier or the adsorption structure on the carrier; no limitation is made here.

[0078] The carrier mounting component 400 provides a dedicated mounting platform for the carrier, enabling it to be securely mounted on the upper end of the rotating shaft 200. This facilitates precise positioning and reliable connection between the carrier and the rotating shaft 200, ensuring that the carrier rotates synchronously and stably during the rotation of the rotating shaft 200. This avoids wobbling or offset caused by unstable installation, improving the mechanical stability of the entire bearing device 1 during operation. Furthermore, connecting the carrier and the rotating shaft 200 via the carrier mounting component 400 makes it easier to adapt carriers of different specifications and models to the rotating shaft 200. By ensuring that the interface specifications of the carrier mounting component 400 are uniform, different carriers can be easily replaced, enhancing the adaptability of the bearing device 1 to the bearing requirements of various types of test pieces and facilitating flexible configuration adjustments based on actual testing tasks.

[0079] The fourth air port 410 on the carrier mounting component 400 is connected to the second air port 220 at the upper end of the rotating shaft 200, forming a continuous and smooth gas transmission path. Starting from the gas source, the gas passes through the first air passage and the second air port 220 inside the rotating shaft 200, then to the fourth air port 410 of the carrier mounting component 400, and finally to the driving air passage of the carrier. This allows the gas to be delivered to the inside of the carrier in an orderly and efficient manner, providing power and ensuring that various pneumatic operations of the carrier, such as adsorption, clamping, releasing, and moving the object to be tested, can be executed smoothly.

[0080] In one possible embodiment, see Figure 7 The rotating shaft 200 is rotatably mounted in the mounting base of the rotating shaft 200 via bearings 500. There are two bearings 500, which are respectively located near the upper and lower ends of the rotating shaft 200.

[0081] Two bearings 500 are arranged near the upper and lower ends of the rotating shaft 200, forming a stable two-point support structure. Compared with single bearing 500 support, the double bearing 500 design greatly enhances the load-bearing capacity of the entire structure against vertical downward gravity, ensuring that the rotating shaft 200 can maintain good mechanical performance even when bearing heavy objects for a long time, and will not bend or deform due to excessive force, thus ensuring the stable operation of the equipment. In addition, the setting of two bearings 500 helps to limit the axial movement of the rotating shaft 200. During operation, the rotating shaft 200 is subjected to radial forces (such as centrifugal force during rotation) and axial forces, such as the axial thrust or pull that may be generated when the carrier moves. The bearings 500 at the upper and lower ends can constrain the axial displacement of the rotating shaft 200 from two directions, preventing it from moving arbitrarily in the axial direction, ensuring the axial stability of the rotating shaft 200 during rotation, making the carrier more accurate and reliable in position when rotating and performing related operations, which is conducive to improving the accuracy of the operation of the workpiece under inspection and reducing the inspection error or operation error caused by axial movement.

[0082] Furthermore, due to the high rotational accuracy of the bearing 500 itself, by setting bearings 500 at both ends of the rotating shaft 200, more precise positioning and guidance can be provided for the rotation of the rotating shaft 200. During rotation, the rotating shaft 200 can rotate stably and accurately around the center line determined by the two bearings 500, effectively reducing eccentric rotation and swaying caused by unstable support structure or gaps, thereby improving the rotational accuracy of the rotating shaft 200. The two bearings 500 work together to ensure that the rotation of the rotating shaft 200 maintains good consistency in all angular directions, ensuring that the carrier installed on it can rotate in a stable and accurate posture, further guaranteeing the accuracy and repeatability of the operation on the workpiece to be tested, and facilitating the realization of a stable and reliable testing process.

[0083] In one possible embodiment, see Figure 2 , Figure 3 as well as Figure 5 The rotating shaft fixing seat 100 is provided with a connecting flange 120 at its lower end; the bearing device 1 also includes a bracket 600, which includes a mounting plate 610. The mounting plate 610 has a mounting through hole, the rotating shaft fixing seat 100 is inserted vertically into the mounting through hole, and the upper surface of the connecting flange 120 is in contact with the lower surface of the mounting plate 610. Fasteners are connected vertically to the flange and the opening of the mounting through hole.

[0084] The mounting through holes on the mounting plate 610 provide precise positioning for the rotating shaft fixing seat 100. The connecting flange 120 mates with the mounting through holes, making it convenient and intuitive to install the rotating shaft fixing seat 100 vertically, reducing installation difficulty and improving efficiency. The connecting flange 120 is attached to the mounting plate 610 and vertically connected by fasteners to form a stable structure. The installation steps are clear, requiring no complicated alignment adjustments or special tools, and are convenient to operate during subsequent maintenance and replacement.

[0085] In one possible embodiment, see Figure 1 and Figure 2 The supporting device also includes a drive component 10 disposed on the bracket 600. The drive component 10 is connected to the rotating shaft 200 via a synchronous belt 20. Both the lower ends of the drive component 10 and the rotating shaft 200 are provided with synchronous pulleys 21 that are driven and cooperate with the synchronous belt 20.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the carrier device of this application, and are not intended to limit it. Although the carrier device of this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A carrying device (1) for carrying a load, characterized in that The bearing device (1) comprises: A rotating shaft fixing seat (100); A rotating shaft (200) is rotatably installed in the rotating shaft fixing seat (100), and is used to be connected with the carrier transmission to drive the carrier to rotate. The rotating shaft (200) is internally provided with a first air channel. A first air port (210) is formed on the side wall of the rotating shaft (200). A second air port (220) is arranged at the upper end of the rotating shaft (200). The first air port (210) and the second air port (220) are both in communication with the first air channel. The first air port (210) is used to communicate with a gas source. The second air port (220) is used to supply gas to the carrier.

2. The load bearing device (1) according to claim 1, characterized in that A third air port (110) is formed on the side wall of the rotating shaft fixing seat (100). The third air port (110) is in communication with the first air port (210). The first air port (210) is in communication with the gas source through the third air port (110).

3. The load bearing device (1) according to claim 2, characterized in that The rotating shaft (200) is provided with a gas passing groove (230) surrounding the outer peripheral wall of the rotating shaft (200). The gas passing groove (230) corresponds to and is in communication with the third air port (110) in the radial direction of the rotating shaft (200). The first air port (210) is arranged in the gas passing groove (230), so that the gas entering through the third air port (110) can enter the first air channel in sequence through the gas passing groove (230) and the first air port (210).

4. The load bearing device (1) according to claim 3, characterized in that A sealing ring (300) is arranged between the rotating shaft (200) and the rotating shaft fixing seat (100). The sealing ring (300) is arranged on the upper and lower sides of the gas passing groove (230).

5. The load bearing device (1) according to claim 4, characterized in that The gas passing groove (230) has a plurality of gas passing grooves (230) arranged in the vertical direction. The upper and lower sides of each gas passing groove (230) are provided with the sealing ring (300).

6. The load bearing device (1) according to any one of claims 1-3, characterized in that, The first air port (210) and the second air port (220) each have a plurality of air ports. The hollow inner cavity of the rotating shaft (200) forms the first air channel.

7. The load bearing device (1) according to any one of claims 1-3, characterized in that, The first air port (210), the second air port (220) and the first air channel each have a plurality of air channels. The first air channels are independent of each other. Any first air channel is in communication with at least one first air port (210) and at least one second air port (220).

8. The load bearing device (1) according to any one of claims 1-3, characterized in that, The bearing device (1) comprises a carrier mounting member (400) mounted at the upper end of the rotating shaft (200). The carrier is mounted on the rotating shaft (200) through the carrier mounting member (400). A fourth air port (410) is formed on the carrier mounting member (400). The fourth air port (410) is in communication with the second air port (220). The fourth air port (410) is connected with the driving gas circuit of the carrier.

9. The load bearing device (1) according to any one of claims 1-3, characterized in that, The rotating shaft (200) is rotatably installed in the rotating shaft fixing base (100) through bearings (500), and the bearings (500) are arranged near the upper and lower ends of the rotating shaft (200).

10. The load bearing device (1) according to any one of claims 1-3, characterized in that, A connecting flange (120) is arranged at the lower end of the rotating shaft fixing base (100). The load bearing device (1) further comprises a support (600), the support (600) comprises a mounting plate (610), the mounting plate (610) is provided with a mounting through hole, the rotating shaft fixing base (100) is arranged in the mounting through hole in the vertical direction, and the upper surface of the connecting flange (120) is attached to the lower surface of the mounting plate (610), and a fastener is connected to the flange and the aperture of the mounting through hole in the vertical direction.

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