A self-locking pivot shaft and a training device having the same

Abstract

The present application relates to the technical field of pivot devices, and specifically discloses a self-locking pivot shaft body and a training device having the same, wherein the self-locking pivot shaft body comprises a pivot body, the pivot body is provided with a fixing groove opened in the upper half of the pivot body, and a slideway opened in the lower half of the pivot body, and a hinge seat is arranged in the fixing groove in the upper half of the pivot body; the end of the flip shaft is rotatably connected in the hinge seat, a receiving groove is opened at the bottom end of the flip shaft, and a hydraulic control mechanism is also arranged on the flip shaft; the sliding seat is slidably arranged in the slideway; two bearing seats are respectively correspondingly sleeved at the upper and lower ends of the pivot body; one end of the auxiliary support shaft is rotatably connected to the sliding seat, and the other end is rotatably connected in the receiving groove at the bottom end of the flip shaft. The main purpose of the present invention is to improve the problems of the shaft structure in terms of functionality, safety, stability and space utilization.

Description

Technical Field

[0001] The invention relates to the technical field of pivot devices, in particular to a self-locking pivot shaft body and a training device having the same. Background Art

[0002] In many mechanical device and equipment application scenarios, the application of shaft structure is often involved. However, when the shaft is used to achieve angle adjustment and positioning, it often lacks an efficient and convenient locking mechanism, and requires a complex combination of multiple components and tedious operations to achieve it. This not only increases the difficulty of operation and time cost, but also lacks insurance measures. Once the locking component fails, it is very easy to cause a safety accident; at the same time, when facing the force requirements under different working conditions, the strength of the traditional shaft structure is limited, and it is difficult to meet the stable support requirements under complex force environments. For some devices that require flexible movement forms, the flexibility of the shaft's self-rotation and the coordinated movement of related components is poor; in addition, the traditional shaft-related auxiliary mechanism settings are often bloated and occupy a large space, which is not conducive to the compact layout and space utilization of the overall device. These problems restrict the improvement and development of related mechanical devices in terms of performance, safety, spatial layout, etc., and a new shaft structure is urgently needed to improve the status quo. Summary of the invention

[0003] The embodiments of the present application provide a self-locking pivot shaft and a training device having the same, the main purpose of which is to improve the problems of the shaft structure in terms of functionality, safety, stability and space utilization.

[0004] To achieve the above-mentioned object, the present application provides a self-locking pivot shaft body in the first aspect, including a pivot body, the pivot body is provided with a fixing groove opened in the upper half of the pivot body, and a slideway opened in the lower half of the pivot body, the fixing groove and the slideway are not coaxially arranged, and the pivot body is also provided with:

[0005] A hinge seat, arranged in a fixing groove on the upper half of the pivot body;

[0006] A flip shaft, the end of which is rotatably connected to the hinge seat, a receiving groove is provided at the bottom end of the flip shaft, and a hydraulic control mechanism is also provided on the flip shaft, and the hydraulic control mechanism is used to lock the rotation angle of the flip shaft;

[0007] A sliding seat, slidably disposed in the slideway;

[0008] Two bearing seats are respectively sleeved on the upper and lower ends of the pivot body so that the pivot body can rotate;

[0009] An auxiliary support shaft, one end of which is rotatably connected to the sliding seat, and the other end of which is rotatably connected to the receiving groove at the bottom end of the flip shaft, and the auxiliary support shaft is used to enhance the strength of the flip shaft;

[0010] A pneumatic auxiliary mechanism is also provided in the inner cavity of the pivot body located in the upper half of the slide. The pneumatic auxiliary mechanism is connected to a signal display device, and the signal display device is used to convert the pressure value into a digital value for display. The pneumatic auxiliary mechanism is connected to the sliding seat and the hinge seat to assist in maintaining the fixation of the flip axis.

[0011] In a feasible embodiment, the hinge seat is provided with: a first positive pressure push chamber is opened inside the fixed seat, and the first positive pressure push chamber is connected to the air pressure auxiliary mechanism; two side plates are respectively fixed on the two end portions of the outer wall of the fixed seat; the inner seat is fixedly arranged in the middle position of the outer wall of the fixed seat, and the inner seat and the side plates are both hinged to the flip shaft, and the end of the flip shaft extends to the gap between the inner seat and the side plates to form the clamping end of the flip shaft; the first locking block is clamped in the first positive pressure push chamber in the fixed seat, and can move in the direction close to or away from the clamping end of the flip shaft; the first push-pull cylinder is fixedly arranged at the center position of the outer wall of the fixed seat, the first push-pull cylinder is connected to the hydraulic control device on the flip shaft, and the first push-pull cylinder is used to drive the first locking block to move; the cleaning component is fixedly arranged on one of the side plates, and the cleaning component corresponds to the gap position between the first locking block and the clamping end of the flip shaft.

[0012] In a feasible embodiment, the pneumatic auxiliary mechanism includes: a piston moving chamber is opened in the inner chamber of the pivot body above the sliding seat; a piston rod is fixedly arranged at the top end of the sliding seat, the top end of the piston rod extends into the piston moving chamber, and the inner chamber of the piston rod is in a hollow through-state; a plug is fixedly sleeved on the end of the piston rod at one end of the piston moving chamber; an air pressure sensor is fixedly arranged on the inner wall of the upper half of the inner chamber of the piston moving chamber, and is connected to the signal of the signal display device.

[0013] In a feasible embodiment, the sliding seat is also provided with: an air duct fixedly opened in the sliding seat, and the air duct is connected to the piston moving chamber through the inner chamber of the piston rod; a second positive pressure push chamber is opened in the inner chamber of the sliding seat below the air duct; a second locking block can be telescopically arranged in the second positive pressure push chamber, and can engage with the locking rack arranged in the slide; a second push-pull cylinder is fixed in the sliding seat, the driving end of the first push-pull cylinder is connected to the second locking block, and the second push-pull cylinder is connected to the hydraulic control mechanism.

[0014] In a feasible embodiment, the flip shaft is also provided with: an operating block rotatably arranged on the flip shaft, and a screw is also connected inside the operating block; a hydraulic drive block can be movably mounted on the screw; a first drive cylinder and a second drive cylinder are both fixedly arranged in the inner cavity of the flip shaft, and are respectively mounted on both ends of the hydraulic drive block; one end of a first hydraulic pipeline is connected to the first drive cylinder, and the other end is connected to the second push-pull cylinder; a second hydraulic pipeline, one end of which is connected to the second drive cylinder, and the other end is connected to the first push-pull cylinder; a toothed gear disk is fixedly arranged on the clamping end of the flip shaft, and can engage and clamp with the first locking block.

[0015] In a feasible embodiment, a bearing and a bearing sleeve sleeved outside the bearing are also provided in the bearing seat, and the lower part of the bearing seat is also provided with: a clean air source chamber is provided above the piston moving chamber and is connected with the piston moving chamber; the central axis passes through the inner chamber of the bearing, and a convex key is provided on the outer wall of the central axis; the upper clamping tooth is fixedly provided on the inner side of the bearing sleeve; the clamping plate can be provided in the clean air source chamber so as to follow the rising and falling movement of the airflow, and is clamped and sleeved on the central axis, and can also be clamped in the upper clamping tooth; the clean exhaust hole is opened in the clean air source chamber, and is connected to the cleaning component through a pipeline.

[0016] In a feasible implementation manner, a sealing ring is provided between the first locking block and the inner wall of the first positive-pressure push chamber; another sealing ring is provided between the second locking block and the inner wall of the second positive-pressure push chamber.

[0017] In a feasible implementation, the cleaning assembly includes: a cleaning air hole is arranged on the wall surface of the side plate and faces the gap between the first locking block and the two toothless toothed discs; a one-way valve is arranged on a pipe connected to the cleaning air hole.

[0018] In a feasible embodiment, the clean air hole is arranged in an arc shape, and a filter net is also arranged in the clean air hole to maintain the purity of the return air from the clean air hole; the one-way valve also includes a retractable control switch, and after the control switch is triggered to retract by the first locking block, the pipeline connected to the clean air hole is in a two-way passage state.

[0019] In the second aspect, the present application provides a training device, comprising two self-locking pivot shafts as described in the first aspect, and arranged parallel to each other. The training device also includes: a seat device is arranged between the two pivot shaft bodies and located on the side where the flip shaft is flipped up; a tension rope device is placed on the outer wall of at least one flip shaft; wherein the signal display device is also provided with a processor, and the processor is used to obtain the pressure value in the air pressure auxiliary mechanism, and generate corresponding training item prompt information according to the pressure value.

[0020] The present application provides a self-locking pivot shaft and a training device having the same. Through a hydraulic control mechanism, the fixed locking of the flip shaft in three-dimensional space can be conveniently and efficiently achieved. The operation is simple and can be achieved with one-point control. The pneumatic auxiliary mechanism can effectively maintain the flip shaft angle in the event of a hydraulic failure, playing a double insurance role without the need for a complex additional insurance structure, thereby ensuring safe operation. The auxiliary support shaft greatly enhances the strength of the flip shaft, enabling it to adapt to the force requirements of different working conditions and ensure a stable and reliable structure. The bearing seat gives the pivot body the ability to rotate and cooperates with the flip shaft to enrich the movement forms and meet a variety of application scenarios. The pneumatic auxiliary mechanism is linked with the signal display device to facilitate pressure monitoring and regulation, which is conducive to mastering the operating status of the device. The storable feature of the auxiliary support shaft effectively reduces the footprint of the device and improves space utilization. As a whole, the shaft structure has excellent performance in terms of functionality, safety, stability and space utilization, and can be widely used in various mechanical devices and equipment with high requirements for shaft performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the three-dimensional structure of a self-locking pivot shaft provided in an embodiment of the present application is shown;

[0022] Figure 2 A schematic diagram of the structure of a piston rod in a self-locking pivot shaft body provided in an embodiment of the present application is shown;

[0023] Figure 3 A schematic diagram showing the structure of a first hydraulic pipeline and a second hydraulic pipeline in a self-locking pivot shaft provided in an embodiment of the present application is shown;

[0024] Figure 4 A schematic diagram of the structure of a receiving slot in a self-locking pivot shaft body provided in an embodiment of the present application is shown;

[0025] Figure 5 A schematic structural diagram of a toothed disc with missing teeth in a self-locking pivot shaft body provided in an embodiment of the present application is shown;

[0026] Figure 6 A schematic structural diagram of a first locking block in a self-locking pivot shaft body provided in an embodiment of the present application is shown;

[0027] Figure 7 A schematic diagram of the structure of a piston moving cavity in a self-locking pivot shaft body provided in an embodiment of the present application is shown;

[0028] Figure 8 A schematic diagram of the structure of the cleaning air hole in the self-locking pivot shaft body provided in an embodiment of the present application is shown;

[0029] Fig. 9 A schematic diagram showing the structural relationship of the cleaning assembly provided in an embodiment of the present application is shown;

[0030] Fig.10 A schematic diagram of the structure of a second locking block in a self-locking pivot shaft body provided in an embodiment of the present application is shown;

[0031] Fig.11 Shows Figure 3 A local enlarged structural diagram of the part;

[0032] Fig.12 Shows Figure 7 A schematic diagram of the local enlarged structure at B in FIG.

[0033] Fig.13 A schematic diagram of the structure of a training device provided in an embodiment of the present application is shown.

[0034] In the figure: 10, pivot body, 20, hinge seat, 30, flip axis, 40, sliding seat, 50, bearing seat, 60, signal display device, 70, auxiliary support shaft, 80, seat device, 90, tension rope device, 11, fixed groove, 12, slide, 21, fixed seat, 22, side plate, 23, inner seat, 24, first locking block, 25, first push-pull cylinder, 26, cleaning component, 27, first positive pressure push chamber, 31, storage groove, 32, operation block, 33, hydraulic drive block, 34, first drive cylinder, 3 5. Second driving cylinder, 36. First hydraulic pipeline, 37. Second hydraulic pipeline, 38. Toothless gear disc, 41. Air duct, 42. Second locking block, 43. Second push-pull cylinder, 44. Second positive pressure push chamber, 51. Bearing sleeve, 52. Center shaft, 53. Upper clamping gear, 54. Clamping plate, 55. Clean air source chamber, 56. Clean exhaust hole, 121. Clamping rack, 131. Piston rod, 132. Piston moving chamber, 133. Plug, 134. Air pressure sensor, 261. Clean air hole, 262. One-way valve. DETAILED DESCRIPTION

[0035] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0036] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.

[0037] See also Figures 1 to 12 As shown, the embodiment of the present application provides a self-locking pivot shaft body, including a pivot body 10, the pivot body 10 is provided with a fixing groove 11 opened in the upper half of the pivot body 10, and a slideway 12 opened in the lower half of the pivot body 10, the fixing groove 11 and the slideway 12 are arranged non-coaxially, and the pivot body 10 is also provided with: a hinge seat 20, a flip shaft 30, a sliding seat 40, two bearing seats 50, a signal display device 60 and an auxiliary support shaft 70;

[0038] The hinge seat 20 is arranged in the fixed groove 11 of the upper half of the pivot body 10; the end of the flip shaft 30 is rotatably connected in the hinge seat 20, and a storage groove 31 is opened at the bottom end of the flip shaft 30. A hydraulic control mechanism is also arranged on the flip shaft 30, and the hydraulic control mechanism is used to lock the rotation angle of the flip shaft 30; the sliding seat 40 is slidably arranged in the slide 12; the two bearing seats 50 are respectively correspondingly sleeved on the upper and lower ends of the pivot body 10 so that the pivot body 10 can rotate; one end of the auxiliary support shaft 70 is rotatably connected to the sliding seat 40, and the other end is rotatably connected to the storage groove 31 at the bottom end of the flip shaft 30, and the auxiliary support shaft 70 is used to enhance the strength of the flip shaft 30; wherein a pneumatic auxiliary mechanism is also arranged in the inner cavity of the pivot body 10 located in the upper half of the slide 12, and the pneumatic auxiliary mechanism is connected to the signal display device 60, and the signal display device 60 is used to convert the pressure value into a digital value for display, and the pneumatic auxiliary mechanism is connected to the sliding seat 40 and the hinge seat 20 to assist in keeping the flip shaft 30 fixed.

[0039] The present application provides a self-locking pivot shaft body, in which the pivot body 10 is a basic component and can rotate to provide steering capability for the flip shaft 30 arranged thereon; a fixing groove 11 is opened on the upper half of the pivot body 10 for firmly installing the hinge seat 20, the hinge seat 20 provides a rotation fulcrum for the flip shaft 30, and the end of the flip shaft 30 is connected thereto and can rotate flexibly, so that the flip shaft 30 can reach the required lifting height and position according to the use requirements. In this process, the hydraulic control mechanism can control the connection state between the flip shaft 30 and the hinge seat 20 and lock it strongly. Only through a simple operation, the outer end of the flip shaft 30 can be extended and fixed in a three-dimensional space. The operation is convenient, efficient and has a safety effect. Once the hydraulic control mechanism fails, the pneumatic auxiliary mechanism will also play a role. The pneumatic auxiliary mechanism also acts on the hinge seat 20. Under the action of air pressure, the current angle of the flip shaft 30 is maintained to prevent accidents caused by the shaft body falling after the failure occurs, which plays a double insurance role without the need to set up a complex safety structure. The auxiliary fixed air pressure in other auxiliary mechanisms is also generated by the flipping action of the flip shaft 30. The overall air pressure auxiliary mechanism also occupies a small area; the storage groove 31 at the bottom of the flip shaft 30 is connected to one end of the auxiliary support shaft 70, and the other end of the auxiliary support shaft 70 is connected to the sliding seat 40 that can slide in the slideway 12. The auxiliary support shaft 70 effectively enhances the structural strength of the flip shaft 30, so that its force effect can be greatly improved. When the flip shaft 30 is adjusted to the required angle, it can rely on this auxiliary support to meet the use requirements under different working conditions, ensuring that the structure is stable and reliable; the two bearing seats 50 are respectively mounted on the upper and lower ends of the pivot body 10 to realize the self-rotation of the pivot body 10 force, cooperating with the flip shaft 30 to make the movement form of the whole device richer; the pneumatic auxiliary mechanism located in the inner cavity of the pivot body 10 in the upper half of the slide 12, in addition to cooperating with the hinge seat 20, is also connected to the sliding seat 40, further assisting in fixing the flip shaft 30, and at the same time, the pneumatic auxiliary mechanism is linked with the signal display device 60 to convert the pressure data into an intuitive digital presentation, which is convenient for monitoring and regulation. The auxiliary support shaft 70 can be stored in the interior of the flip shaft 30 and the pivot body 10 when the flip shaft 30 is not in use, effectively reducing the footprint of the entire pivot device and improving space utilization.

[0040] like Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, in some examples, further, the hinge seat 20 is provided with: a fixed seat 21, two side panels 22, an inner seat 23, a first locking block 24, a first push-pull cylinder 25 and a cleaning assembly 26; a first positive pressure push chamber 27 is opened inside the fixed seat 21, and the first positive pressure push chamber 27 is connected to the air pressure auxiliary mechanism; the two side panels 22 are respectively fixed on the two ends of the outer wall of the fixed seat 21; the inner seat 23 is fixedly arranged in the middle position of the outer wall of the fixed seat 21, and the inner seat 23 and the side panels 22 are both hinged to the flip shaft 30, and the end of the flip shaft 30 extends to the inner seat 23 and the side panels 2 2 to form a clamping end of the flip shaft 30; the first locking block 24 is clamped in the first positive pressure push chamber 27 in the fixed seat 21, and can move towards or away from the clamping end of the flip shaft 30; the first push-pull cylinder 25 is fixedly arranged at the center position of the outer wall of the fixed seat 21, the first push-pull cylinder 25 is connected to the hydraulic control device on the flip shaft 30, and the first push-pull cylinder 25 is used to drive the first locking block 24 to move; the cleaning component 26 is fixedly arranged on one of the side panels 22, and the cleaning component 26 corresponds to the gap position between the first locking block 24 and the clamping end of the flip shaft 30.

[0041] In this example, it should be noted that the fixed seat 21 serves as the basic structure, and the first positive pressure push chamber 27 inside is connected to the pneumatic auxiliary mechanism, which can receive pneumatic power to help maintain the angle locking effect of the flip shaft 30; the two side panels 22 are fixed at the two ends of the outer wall of the fixed seat 21, and together with the inner seat 23 provide hinged support for the flip shaft 30, and the end of the flip shaft 30 is inserted into the gap between the inner seat 23 and the side panel 22 to form a clamping end; the first locking block 24 is in the first positive pressure push chamber 27, and is driven by air pressure and hydraulic pressure to move in a straight line, and is clamped on the end of the flip shaft 30 to prevent the flip shaft 30 from rotating. Under the action of the pneumatic auxiliary mechanism, it can assist in fixing the clamping end position of the flip shaft 30 to enhance stability.

[0042] The main driving mode of the first locking block 24 is hydraulic driving, supplemented by gas driving. The hydraulically driven components include: a first push-pull cylinder 25 fixed to the center position of the outer wall of the fixed seat 21, connected to the hydraulic control device of the flip shaft 30, and the push-pull end of the first push-pull cylinder 25 is connected to the first locking block 24. Therefore, by controlling the hydraulic control device on the flip shaft 30, the first locking block 24 can be driven to move and lock on the end of the flip shaft 30, and can also be controlled to be unlocked, thereby achieving more precise locking and unlocking control of the flip shaft 30.

[0043] In this example, it is also necessary to explain that the cleaning component 26 is fixed on the side panel 22, corresponding to the gap between the first locking block 24 and the clamping end of the flip shaft 30, and can perform a cleaning action before each locking block is clamped at the end of the flip shaft 30, so as to promptly clean up dust and debris in the area to prevent impurities from affecting the matching accuracy and movement smoothness of various components, thereby ensuring the long-term stable operation of the entire hinge seat 20 and the flip shaft 30 structure, effectively improving the reliability of the device, and making the angle adjustment and fixation of the flip shaft 30 more stable and free of abnormalities, meeting the needs of various complex working conditions.

[0044] like Figure 2 , Figure 7 , Fig.10 and Fig.12 As shown, in some examples, further, the pneumatic auxiliary mechanism includes: a piston rod 131, a piston moving chamber 132, a plug 133 and an air pressure sensor 134; the piston moving chamber 132 is opened in the inner chamber of the pivot body 10 above the sliding seat 40; the piston rod 131 is fixedly arranged at the top end of the sliding seat 40, and the top end of the piston rod 131 extends into the piston moving chamber 132, and the inner chamber of the piston rod 131 is in a hollow through-state; the plug 133 is fixedly sleeved on the end of the piston rod 131 at one end of the piston moving chamber 132; the air pressure sensor 134 is fixedly arranged on the inner wall of the upper half of the inner chamber of the piston moving chamber 132, and is connected to the signal of the signal display device 60.

[0045] In this example, the piston moving chamber 132 serves as a spatial area for air pressure changes. It is located in the inner cavity of the pivot body 10 above the sliding seat 40 and does not occupy any additional spatial area. The piston rod 131 is fixed at the top of the sliding seat 40 and extends to the piston moving chamber 132. Its hollow through-state provides a channel for air pressure transmission. The plug 133 is sleeved on the piston rod 131 at one end of the piston moving chamber 132 and can cooperate with the inner wall of the piston moving chamber 132 to form a sealed space.

[0046] When the sliding seat 40 moves upward due to the lifting action of the flip shaft 30, it drives the piston rod 131 to move, thereby changing the air pressure in the piston moving chamber 132; the air pressure sensor 134 is fixed to the inner wall of the upper half of the piston moving chamber 132, and can monitor the air pressure changes in the chamber in real time, and transmit the signal to the signal display device 60, so that the air pressure data can be presented intuitively, wherein the pressure data is in direct proportion to the lifting angle of the flip shaft 30. Therefore, the relationship between the air pressure value and the angle can be obtained through simple implementation operations, and the air pressure value can be converted into the rotation angle value of the flip shaft 30 and displayed through the signal display device 60, so that the operator can grasp the internal air pressure of the device and the current angle of the flip shaft 30, so as to judge the state of the flip shaft 30 and the overall operation status of the device, thereby improving the functionality of the entire self-locking pivot shaft body and enabling the device to better adapt to various complex working conditions.

[0047] like Fig.10 As shown, in some examples, further, the sliding seat 40 is also provided with: an air duct 41, a second locking block 42, a second push-pull cylinder 43 and a second positive pressure push chamber 44; the air duct 41 is fixedly opened in the sliding seat 40, and the air duct 41 is connected to the piston moving chamber 132 through the inner cavity of the piston rod 131; the second positive pressure push chamber 44 is opened in the inner cavity of the sliding seat 40 below the air duct 41; the second locking block 42 can be telescopically arranged in the second positive pressure push chamber 44, and can be engaged with the card rack 121 arranged in the slide 12; the second push-pull cylinder 43 is fixed in the sliding seat 40, the driving end of the first push-pull cylinder 25 is connected to the second locking block 42, and the second push-pull cylinder 43 is connected to the hydraulic control mechanism.

[0048] In this example, the air channel 41 forms an air pressure transmission path in the sliding seat 40, so that the piston moving chamber 132 is connected with the inner space of the sliding seat 40, ensuring that the air pressure can be transmitted between multiple chambers; the second positive pressure push chamber 44 provides a telescopic activity space for the second locking block 42; the second locking block 42 can be telescopic in the second positive pressure push chamber 44, and when controlled by the hydraulic control mechanism, it can engage with the card rack 121 in the slide 12, thereby limiting the movement of the sliding seat 40 in the slide 12, thereby indirectly assisting in fixing the position of the flip shaft 30, and providing an enhanced and stable support effect for the flip shaft 30. It can be seen that this example also provides an auxiliary support structure that saves space.

[0049] In order to realize the active movement of the second locking block 42 and the corresponding fixed or contact-fixed state effect of the sliding seat 40 in the slide 12, a second push-pull cylinder 43 is used as a driving component in this example. The second push-pull cylinder 43 is fixed in the sliding seat 40. The driving end of the second push-pull cylinder 43 is connected to the second locking block 42 and is connected to the hydraulic control mechanism. The hydraulic control mechanism can also quickly and conveniently control the action of the second push-pull cylinder 43 to push the second locking block 42 out to engage with the rack 121 to achieve locking, or pull it back to unlock.

[0050] When the device is running, after the flip shaft 30 is lifted, it rotates to drive the sliding seat 40 to move, and the air pressure in the piston moving chamber 132 changes and increases. The hydraulic control mechanism controls the first push-pull cylinder 25 while also synchronously controlling the second push-pull cylinder 43, so that the second locking block 42 cooperates with the rack 121 to maintain the position of the sliding seat 40, enhance the reliability of the fixation of the flip shaft 30, prevent the sliding seat 40 from accidentally sliding and causing the angle of the flip shaft 30 to change, ensure the stable operation of the entire device under different working conditions, improve the overall stability of the structure, and meet the requirements of precise control and stable support of the flip shaft 30 in complex usage scenarios.

[0051] like Figure 3 and Fig.11As shown, in some examples, further, the flip shaft 30 is also provided with: an operating block 32, a hydraulic drive block 33, a first drive cylinder 34 and a second drive cylinder 35, a first hydraulic pipeline 36, a second hydraulic pipeline 37 and a toothless gear disk 38; the operating block 32 can be rotatably arranged on the flip shaft 30, and a screw is also connected inside the operating block 32; the hydraulic drive block 33 can be movably sleeved on the screw; the first drive cylinder 34 and the second drive cylinder 35 are both fixedly arranged in the inner cavity of the flip shaft 30, and are respectively sleeved on both ends of the hydraulic drive block 33; one end of the first hydraulic pipeline 36 is connected to the first drive cylinder 34, and the other end is connected to the second push-pull cylinder 43; one end of the second hydraulic pipeline 37 is connected to the second drive cylinder 35, and the other end is connected to the first push-pull cylinder 25; the toothless gear disk 38 is fixedly arranged on the clamping end of the flip shaft 30, and can engage and clamp with the first locking block 24.

[0052] In this example, the specific components of the hydraulic control mechanism are further disclosed, including: an operating block 32 as a manually operated component that can rotate on the flip shaft 30 (for example, located at the end of the flip shaft 30 and coaxially arranged with the flip shaft 30 or radially arranged perpendicular to the flip shaft 30), and a screw connected inside the operating block 32 provides a movable track for the hydraulic drive block 33; the hydraulic drive block 33 moves on the screw and can change the hydraulic state in the first drive cylinder 34 and the second drive cylinder 35 at different positions; the first drive cylinder 34 is connected to the second push-pull cylinder 43 via a first hydraulic pipeline 36, and the second drive cylinder 35 is connected to the first push-pull cylinder 25 via a second hydraulic pipeline 37. Finally, the hydraulic drive block 33 is driven to move by the rotation of the operating block 32, so that the hydraulic pressure in the first drive cylinder 34 and the second drive cylinder 35 changes, thereby controlling the action of the first push-pull cylinder 25 and the second push-pull cylinder 43, and synchronously realizing the position switching function of the first locking block 24 and the second locking block 42.

[0053] Furthermore, in order to ensure the locking and limiting effect on the end of the flip shaft 30, in this example, a toothed disc 38 is further provided, which is fixed at the clamping end of the flip shaft 30 and meshes and engages with the first locking block 24 to achieve angle locking of the flip shaft 30; during operation, the operating block 32 is rotated to move the hydraulic drive block 33, change the hydraulic distribution, push or pull back the first push-pull cylinder 25 and the second push-pull cylinder 43, the first push-pull cylinder 25 controls the engagement or separation of the first locking block 24 with the toothed disc 38, and the second push-pull cylinder 43 controls the engagement or separation of the second locking block 42 with the rack 121 of the slide 12, thereby achieving flexible locking and unlocking of the flip shaft 30 at multiple angles in three-dimensional space, improving the controllability and stability of the device, ensuring the accuracy and reliability of the position fixation of the flip shaft 30 under different working conditions, and meeting diverse usage requirements.

[0054] like Figure 7 and Fig.12As shown, in some examples, further, a bearing and a bearing sleeve 51 sleeved on the outside of the bearing are further provided in the bearing seat 50, and the lower part of the bearing seat 50 is also provided with: a central axis 52, an upper clamping tooth 53, a clamping plate 54, a clean air source chamber 55 and a clean exhaust hole 56; the clean air source chamber 55 is arranged above the piston moving chamber 132 and is connected with the piston moving chamber 132; the central axis 52 passes through the inner cavity of the bearing, and a convex key is arranged on the outer wall of the central axis 52; the upper clamping tooth 53 is fixedly arranged on the inner side of the bearing sleeve 51; the clamping plate 54 can be arranged in the clean air source chamber 55 so as to follow the rising and falling movement of the airflow, and is clamped and sleeved on the central axis 52, and can also be clamped in the upper clamping tooth 53; the clean exhaust hole 56 is opened in the clean air source chamber 55, and is connected to the cleaning component 26 through a pipeline.

[0055] In this example, it is worth mentioning that the bearing is used to support the pivot body 10 so that it can rotate smoothly, and the bearing sleeve 51 protects and assists in positioning the bearing, and is fixedly connected to the outer ring of the bearing; the clean air source chamber 55 can store a certain amount of gas, and is connected to the piston moving chamber 132, and can use air pressure changes to achieve impact gas transmission; the central axis 52 passes through the inner cavity of the bearing, and the convex key on its outer wall plays a positioning role for the inner ring of the bearing and the clamping plate 54; the upper clamping tooth 53 is fixed on the inner side of the bearing sleeve 51, and is used to cooperate with the clamping plate 54 to achieve clamping and locking to limit the rotation between the pivot and the bearing sleeve 51; the clamping plate 54 can follow the airflow in the clean air source chamber 55 to rise and fall, be clamped on the central axis 52 and can be clamped with the upper clamping tooth 53 to lock the rotation angle of the pivot body 10 itself; the clean exhaust hole 56 is opened in the clean air source chamber 55, and is connected to the cleaning component 26 through a pipeline, and can transport the gas in the chamber to the cleaning component 26 to provide an air source for cleaning work.

[0056] During the operation of the device, as the flip shaft 30 is lifted, the auxiliary support shaft 70 drives the sliding seat 40 to move upward, and the plug 133 will also move, and the air pressure in the piston moving chamber 132 will increase. Under the blocking effect of the one-way valve 262, the air pressure in the clean air source chamber 55 will increase synchronously. When the user needs to use the flip shaft 30, the rotation angle of the flip shaft 30 in the horizontal direction is adjusted. During this process, the bearing works until the full position adjustment of the flip shaft 30 is completed. By adjusting the operating block 32 in the hydraulic control mechanism, the first locking block 24 and the second locking block 42 move synchronously. When the first locking block 24 moves, it will move toward the cleaning component 26. The cleaning component 26 is triggered in this process, and the cleaning component 26 starts to work, so that the clean air source is connected to the outside air. Under the action of the pressure difference between the piston active chamber and the clean air source chamber 55, the clean air source in the clean air source chamber 55 is quickly squeezed out, and finally acts between the first locking block 24 and the toothless gear disk 38, and a cleaning action is generated before the two are about to engage, so as to avoid the situation of unreliable engagement and fixation due to dust and debris. At the same time, in the process of the clean air source being discharged, the card plate 54 will also rise under the action of the pressure difference, and be stuck in the lower and upper card teeth 53 under the thrust of the pressure, so that the bearing sleeve 51 and the pivot cannot rotate, that is, the locking and limiting effect on the rotation of the pivot is also completed at the same time.

[0057] In some examples, further, a sealing ring (not shown in the figure) is provided between the first locking block 24 and the inner wall of the first positive pressure driving chamber 27 ; another sealing ring is provided between the second locking block 42 and the inner wall of the second positive pressure driving chamber 44 .

[0058] In this example, it can be understood that the role of the two sealing rings is to fill the gap between them to form an effective seal; when the device is running, when the air pressure changes in the first positive pressure push chamber 27 and the second positive pressure push chamber 44, the sealing ring can prevent the gas from leaking from these gaps, thereby ensuring the stability of the air pressure in the chamber, so that the first locking block 24 can be driven by stable air pressure to approach the locking end of the flip shaft 30, and even if the hydraulic control mechanism fails, it can maintain the locked state. The second locking block 42 is similar to achieve reliable engagement with the card rack 121 in the slide 12.

[0059] like Figure 5 , Figure 6 , Figure 7 and Fig. 9 As shown, in some examples, further, the cleaning component 26 includes: a cleaning air hole 261 and a one-way valve 262, the cleaning air hole 261 is arranged on the wall surface of the side plate 22 and faces the gap between the first locking block 24 and the two toothless toothed discs 38; the one-way valve 262 is arranged on the pipe connected to the cleaning air hole 261.

[0060] In this example, it should be noted that the cleaning air hole 261 is opened on the wall of the side plate 22 and faces the gap between the first locking block 24 and the two toothless toothed discs 38. Its function is to provide a channel for gas to be ejected so as to clean the key gaps. The one-way valve 262 is arranged on the pipeline connected to the cleaning air hole 261, which can control the flow direction of the gas. In the non-cleaning state, only the gas is allowed to enter the cleaning gas source chamber 55 from the cleaning air hole 261. The corresponding state is the state when the flip shaft 30 falls and is not in use. When the flip shaft 30 is lifted, the high-pressure gas from the clean air source chamber 55 is transmitted through the pipeline and intercepted by the one-way passage of the one-way valve 262 until the first locking block 24 moves to trigger the switch of the one-way valve 262, and then the high-pressure gas is instantly ejected through the clean air hole 261 in a directional manner to blow away the dust and debris in the gap between the first locking block 24 and the two toothless gear discs 38, preventing the accumulation of impurities from affecting the meshing and card-jointing accuracy between the components, thereby ensuring the smoothness of the angle adjustment, locking and other operations of the flip shaft 30.

[0061] like Figure 8 and Fig. 9 As shown, in some examples, further, the cleaning air hole 261 is arranged in an arc shape, and a filter net (not shown in the figure) is also arranged in the cleaning air hole 261 to maintain the purity of the return air from the cleaning air hole 261; the one-way valve 262 also includes a retractable control switch, and after the control switch is triggered to retract by the first locking block 24, the pipeline connected to the cleaning air hole 261 is in a two-way passage state.

[0062] In this example, it can be understood that the arc-shaped cleaning air hole 261 can make the ejected air flow more concentrated and evenly and comprehensively act on the gap between the first locking block 24 and the toothless toothed disc 38 to ensure the cleaning effect; the filter can effectively filter out external dust and impurities when the cleaning air hole 261 returns air, and maintain the purity of the air hole to be used for the next cleaning gas; the retractable control switch of the one-way valve 262 ensures that the gas can only enter the cleaning air hole 261 in one direction when it is not triggered (during the process of the flip shaft 30 falling and resetting), and cannot be discharged through the cleaning air hole 261. After the flip shaft 30 is lifted, high pressure is generated, and then the first locking block 24 moves to perform the locking operation, triggering the control switch to contract. At this time, the pipeline connected to the cleaning air hole 261 becomes a two-way passage state, and the high-pressure gas used for cleaning is discharged to achieve the cleaning purpose, so as to maintain good matching accuracy between the components, ensure that the flip shaft 30 is stable and reliable during adjustment, locking and other actions, reduce problems such as jamming and wear caused by impurities, enhance the stability and durability of the device under various working conditions, and meet the needs of long-term stable use.

[0063] like Fig.13As shown, the embodiment of the present application provides a training device in the second aspect, including two self-locking pivot shafts as provided in the aforementioned technical solution, and arranged parallel to each other. The training device also includes: a seat device 80 and a tension rope device 90, the seat device 80 is arranged between the two pivot bodies 10 and is located on the side where the flip axis 30 is flipped up; the tension rope device 90 is placed on the outer wall of at least one flip axis 30; wherein a processor is also provided in the signal display device 60, and the processor is used to obtain the pressure value in the air pressure auxiliary mechanism, and generate corresponding training item prompt information according to the pressure value.

[0064] In the training device equipped with a self-locking pivot shaft, two self-locking pivot shafts arranged parallel to each other provide basic support and multi-angle adjustment capabilities for the entire training device; the seat device 80 is located between the two pivot bodies 10 and on the flipped side of the flip shaft 30, so that the user can sit comfortably and carry out various training exercises; the tension rope device 90 is placed on the outer wall of the flip shaft 30, which can provide tension in different directions and intensities, facilitating strength training; the processor in the signal display device 60 can obtain the pressure value of the pneumatic auxiliary mechanism, and determine the corresponding training items according to different pressure values ​​corresponding to different flip heights of the flip shaft 30, and generate and display training item prompt information.

[0065] For example: the user sits on the seat and adjusts the angle of the flip shaft 30, the piston moving chamber 132 generates positive pressure, and the processor in the signal display device 60 generates prompt information according to the flip height of the flip shaft 30 corresponding to the pressure information. For example, when it is lifted 120 degrees, the end of the flip shaft 30 is located at a high place, and the signal display device 60 can correspondingly display a high-position pull-down movement, which is convenient for prompting the user to carry out the corresponding proprietary movement. The present device can provide a pulling training environment in the pull-down direction. In addition to high-position pull-downs, the present device can also perform butterfly arm chest clamping, abdominal muscle training, cervical flexion and extension, rowing, biceps training, shoulder lifting, leg lifting and other strength training exercises; it can realize intelligent prompts and diversified training of training projects, meet different training needs, and improve the pertinence and effectiveness of training. At the same time, the use of the self-locking pivot shaft body provided in the first aspect of the present device can greatly reduce the footprint of the training device, and the characteristics of the self-locking pivot shaft body are used to ensure stability and reliability during training and diversified training processes, thereby improving the practicality and functionality of the training device.

[0066] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or electronic device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or electronic device. In the absence of further restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or electronic device including the elements.

[0067] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0068] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A self-locking pivot shaft, comprising a pivot body (10), characterized in that: The pivot body (10) is provided with a fixing groove (11) disposed on the upper half of the pivot body (10), and a slideway (12) disposed on the lower half of the pivot body (10), wherein the fixing groove (11) and the slideway (12) are non-coaxially disposed. The pivot body (10) is also provided with: A hinge seat (20) is arranged in a fixing groove (11) in the upper half of the pivot body (10); A flip shaft (30) whose end is rotatably connected to the hinge seat (20); a receiving groove (31) is provided at the bottom end of the flip shaft (30); and a hydraulic control mechanism is also provided on the flip shaft (30), and the hydraulic control mechanism is used to lock the rotation angle of the flip shaft (30); A sliding seat (40) slidably disposed in the slideway (12); Two bearing seats (50) are respectively sleeved on the upper and lower ends of the pivot body (10) so that the pivot body (10) can rotate; an auxiliary support shaft (70), one end of which is rotatably connected to the sliding seat (40) and the other end of which is rotatably connected to the receiving groove (31) at the bottom end of the flip shaft (30), the auxiliary support shaft (70) being used to enhance the strength of the flip shaft (30); A pneumatic auxiliary mechanism is also provided in the inner cavity of the pivot body (10) located in the upper half of the slideway (12). The pneumatic auxiliary mechanism is connected to the signal display device (60) by signal. The signal display device (60) is used to convert the pressure value into a digital value for display. The pneumatic auxiliary mechanism is connected to the sliding seat (40) and the hinge seat (20) to assist in maintaining the fixation of the flip shaft (30).

2. The self-locking pivot shaft according to claim 1, characterized in that: The hinge seat (20) is provided with: A fixing seat (21), wherein a first positive pressure pushing chamber (27) is provided inside the fixing seat (21), and the first positive pressure pushing chamber (27) is connected to the air pressure auxiliary mechanism; Two side plates (22) are respectively fixed to two end portions of the outer side wall of the fixing seat (21); An inner seat (23) is fixedly built into the middle position of the outer side wall of the fixed seat (21), the inner seat (23) and the side plate (22) are both hinged to the flip shaft (30), and the end of the flip shaft (30) extends into the gap between the inner seat (23) and the side plate (22) to form a clamping end of the flip shaft (30); A first locking block (24) is clamped in a first positive pressure pushing cavity (27) in the fixing seat (21) and is capable of moving in a direction close to or away from a clamping end of the flip shaft (30); A first push-pull cylinder (25) is fixedly arranged at the center of the outer wall of the fixing seat (21), the first push-pull cylinder (25) is connected to a hydraulic control device on the flip shaft (30), and the first push-pull cylinder (25) is used to drive the first locking block (24) to move; A cleaning component (26) is fixedly arranged on one of the side plates (22), and the cleaning component (26) corresponds to the gap position between the first locking block (24) and the clamping end of the flip shaft (30).

3. The self-locking pivot shaft according to claim 2, characterized in that: The air pressure assist mechanism comprises: A piston movement chamber (132) is provided in the inner chamber of the pivot body (10) above the sliding seat (40); A piston rod (131) is fixedly mounted on the top end of the sliding seat (40), the top end of the piston rod (131) extends into the piston moving cavity (132), and the inner cavity of the piston rod (131) is in a hollow through-state; A plug (133) fixedly sleeved on an end portion of the piston rod (131) located at one end of the piston moving chamber (132); The air pressure sensor (134) is fixedly mounted on the inner wall of the upper inner cavity of the piston moving cavity (132) and is signal-connected to the signal display device (60).

4. The self-locking pivot shaft according to claim 3, characterized in that: The sliding seat (40) is further provided with: An air passage (41) is fixedly opened in the sliding seat (40), and the air passage (41) is connected to the piston moving chamber (132) through the inner chamber of the piston rod (131); A second positive pressure driving chamber (44) is provided in the inner chamber of the sliding seat (40) below the air passage (41); A second locking block (42) is telescopically disposed in the second positive pressure push chamber (44) and is capable of meshing and engaging with a latching rack (121) disposed in the slideway (12); The second push-pull cylinder (43) is fixed in the sliding seat (40), the driving end of the first push-pull cylinder (25) is connected to the second locking block (42), and the second push-pull cylinder (43) is connected to the hydraulic control mechanism.

5. The self-locking pivot shaft according to claim 4, characterized in that: The flip shaft (30) is also provided with: An operating block (32) is rotatably disposed on the flip shaft (30), and a screw is further connected to the operating block (32); A hydraulic drive block (33) movably sleeved on the screw rod; A first driving cylinder (34) and a second driving cylinder (35) are both fixedly disposed in the inner cavity of the flip shaft (30) and are respectively sleeved on both ends of the hydraulic driving block (33); A first hydraulic pipeline (36), one end of which is connected to the first driving cylinder (34) and the other end of which is connected to the second push-pull cylinder (43); A second hydraulic pipeline (37), one end of which is connected to the second driving cylinder (35), and the other end of which is connected to the first push-pull cylinder (25); The toothless toothed disc (38) is fixedly arranged on the clamping end of the flip shaft (30) and is capable of being meshed and clamped with the first locking block (24).

6. The self-locking pivot shaft according to claim 5, characterized in that: A bearing and a bearing sleeve (51) sleeved outside the bearing are also arranged in the bearing seat (50), and the lower part of the bearing seat (50) is also provided with: A clean air source chamber (55) is arranged above the piston moving chamber (132) and is in communication with the piston moving chamber (132); A central shaft (52) passes through the inner cavity of the bearing, and a convex key is provided on the outer wall of the central shaft (52); An upper latching tooth (53) fixedly disposed on the inner side of the bearing sleeve (51); A clamping plate (54) capable of following the rising and falling movement of the airflow, arranged in the clean air source chamber (55), and being clamped and sleeved on the central shaft (52), and capable of being clamped in the upper clamping teeth (53); A cleaning exhaust hole (56) is provided in the cleaning air source cavity (55) and is connected to the cleaning component (26) via a pipeline.

7. The self-locking pivot shaft according to claim 5, characterized in that: A sealing ring is provided between the first locking block (24) and the inner wall of the first positive pressure pushing chamber (27); Another sealing ring is provided between the second locking block (42) and the inner wall of the second positive pressure pushing chamber (44).

8. The self-locking pivot shaft according to claim 5, characterized in that: The cleaning component (26) comprises: A cleaning air hole (261) is arranged on the wall surface of the side plate (22) and faces the gap between the first locking block (24) and the two toothless toothed discs (38); A one-way valve (262) is arranged on a pipe connected to the cleaning air hole (261).

9. The self-locking pivot shaft according to claim 8, characterized in that: The cleaning air hole (261) is arranged in an arc shape, and a filter screen is also arranged inside the cleaning air hole (261) to maintain the purity of the air returning from the cleaning air hole (261); The one-way valve (262) further comprises a retractable control switch, and after the control switch is triggered to retract by the first locking block (24), the pipeline connected to the cleaning air hole (261) is in a two-way passage state.

10. A training device, characterized in that: The training device comprises two self-locking pivot shafts as described in any one of claims 1 to 9, which are arranged parallel to each other, and the training device also comprises: A seat device (80) is arranged between the two pivot bodies (10) and is located on a side where the flip shaft (30) is flipped up; A tension rope device (90) is arranged on an outer wall of at least one tilting shaft (30); The signal display device (60) is further provided with a processor, the processor being used to obtain the pressure value in the air pressure assist mechanism and to generate corresponding training item prompt information according to the pressure value.

Images