A sliding bearing seat structure and training device

Abstract

The present application relates to the technical field of bearing seats, and specifically discloses a sliding bearing seat structure and a training device, including a sliding bearing seat arranged in a pivot, and an upper bearing seat arranged on the end of the pivot, and also includes: a bearing seat fixedly arranged in the outer wall of the upper half of the pivot; the upper end of the height adjustment shaft is rotatably connected to the inner side of the fixed seat; one end of the linkage shaft is hinged to the inner side of the middle part of the height adjustment shaft; a positioning mechanism is arranged in the inner cavity of the upper half of the pivot, a lifting mechanism is arranged in the inner cavity of the upper half of the pivot, and the lifting mechanism is connected to the positioning mechanism; a resistance adjustment mechanism is arranged above the lifting mechanism, the bottom end of the resistance adjustment mechanism is the resistance adjustment end, and the top end of the resistance adjustment mechanism is the resistance application end, and the resistance application end is used to change the resistance of the sliding bearing seat and the height adjustment shaft rotating in the upper bearing seat. The present invention realizes that the pivot can have a resistance that meets the requirements under different working conditions.

Description

Technical Field

[0001] The invention relates to the technical field of bearing seats, and in particular to a sliding bearing seat structure and a training device. Background Art

[0002] In many equipment application scenarios involving pivot rotation, the pivot is often required to have a suitable and flexibly adjustable resistance environment and reset environment when rotating. However, traditional related structures usually find it difficult to adaptively change the resistance of the pivot turning according to the actual sliding position of the sliding bearing seat on the pivot. This results in the equipment being unable to accurately match the resistance requirements under different needs during operation. Either the resistance is too large and affects the rotation efficiency, or the resistance is too small to ensure safety and stability in use. It is also difficult to effectively lock and flexibly adjust the position of the sliding bearing seat, and it is even more difficult to reasonably utilize the sliding kinetic energy of the sliding bearing seat to convert it into a torque to assist in adjusting the resistance. It is difficult to ensure that the equipment has a resistance and reset environment that meets the requirements under different working conditions. Summary of the invention

[0003] The embodiments of the present application provide a sliding bearing seat structure and a training device, the main purpose of which is to ensure that the pivot has a resistance that meets the requirements under different working conditions.

[0004] To achieve the above-mentioned purpose, a first aspect of an embodiment of the present application provides a sliding bearing seat structure, comprising a sliding bearing seat arranged in a pivot, and an upper bearing seat arranged on the end of the pivot, and further comprising:

[0005] A fixed seat, fixedly arranged in the outer wall of the upper half of the pivot;

[0006] A height adjustment shaft, the upper end of which is rotatably connected to the inner side of the fixing seat;

[0007] A linkage shaft, one end of which is hinged to the inner side of the middle part of the height adjustment shaft, and the other end of which is connected to the sliding bearing seat;

[0008] A positioning mechanism, which is arranged in the inner cavity of the upper half of the pivot, and the positioning mechanism is located directly above the sliding bearing seat, and the positioning mechanism is used to lock the position of the sliding bearing seat;

[0009] A lifting mechanism is disposed in the inner cavity of the upper half of the pivot shaft, and the lifting mechanism is connected to the positioning mechanism;

[0010] The resistance adjusting mechanism is arranged above the lifting mechanism, the bottom end of the resistance adjusting mechanism is the resistance adjusting end, the resistance adjusting end is connected to the lifting mechanism, the top end of the resistance adjusting mechanism is the resistance applying end, the resistance applying end is connected to the upper bearing seat, and is used to change the resistance of the sliding bearing seat and the height adjustment shaft rotating in the upper bearing seat.

[0011] In a feasible embodiment, the height adjustment shaft is provided with: one end of the wire control component is connected to the operating knob at the outer end of the height adjustment shaft, and the other end of the wire control component extends to the positioning mechanism in the inner cavity of the upper half of the pivot; a storage groove is opened at the bottom end of the height adjustment shaft, and the storage groove matches the shape and size of the linkage shaft.

[0012] In a feasible embodiment, the positioning mechanism includes: a movable clamping plate capable of moving between a locking position and a release position inwardly in the upper half of the main shaft, and the middle part of the movable clamping plate is connected to the wire control assembly; the controlled plate can be moved along the length direction of the pivot and clamped in the inner cavity of the upper half of the pivot, and when the movable clamping plate is in the locking position, the movable clamping plate is clamped into the controlled plate; the top end of the connecting rod is fixedly connected to the bottom end of the controlled plate, and the bottom end of the connecting rod is fixedly connected to the top end of the sliding bearing seat.

[0013] In a feasible embodiment, the lifting mechanism includes: at least one first slider capable of sliding along the length direction of the pivot, arranged in the inner cavity of the upper half of the pivot, and located above the controlled plate; a first rack is fixedly connected to the first slider, and the bottom end of the first rack is fixedly connected to the controlled plate; at least one second slider is parallel to the moving direction of the first slider, and the second slider is arranged on the side of the first slider away from the movable clamping plate; a gear is rotatably connected to the second slider and meshed with the first rack; a second rack is fixedly installed in the inner cavity of the upper half of the pivot, and is arranged parallel to the first rack, and the second rack is also meshed with the gear; a fixed platform is fixedly installed on the top of all the second sliders; a drive rod is fixedly arranged on the top of the fixed platform, and the top of the drive rod extends into the resistance adjustment mechanism.

[0014] In a feasible embodiment, the resistance adjustment mechanism includes: a damping container is fixedly arranged in the inner cavity of the upper half of the pivot, the lower half of the damping container is the resistance adjustment end, and the upper half of the damping container is the resistance application end; a lower piston is linearly movably arranged in the resistance adjustment end of the damping container, and the lower piston is fixedly connected to the driving rod; an upper piston is linearly movably arranged in the resistance application end of the damping container, and the top end of the upper piston extends into the upper bearing seat; a ball seat is fixedly arranged on the top end portion of the upper piston, and the ball seat is movably arranged in the upper bearing seat.

[0015] In a feasible embodiment, a bearing seat side shell is provided on the upper bearing seat, and a long slot with an arc-shaped projection surface is also opened in the bottom end surface of the bearing seat side shell, and the long slot is coaxial with the rotation axis of the upper bearing seat; the top tube end surface of the long slot is in contact with the ball in the ball seat, wherein the contact surface between the ball and the inner wall of the top end of the long slot is an inclined surface, and the depth of different positions in the long slot is different.

[0016] In a feasible embodiment, the movable card plate is provided with one of the protrusions or the snap-in grooves equidistant along the length direction of the pivot; the controlled plate is provided with the other of the protrusions or the snap-in grooves equidistant along the length direction of the pivot, and the movable card plate can be snapped into the controlled plate through the protrusions and the snap-in grooves.

[0017] According to a second aspect of an embodiment of the present application, a training device is provided, comprising a sliding bearing seat structure as described in the first aspect, and further comprising: the gripper is connected to the side of the outer end of the height adjustment shaft through a rotating shaft so as to be rotatable along a horizontal axis; a pressure sensor is also provided in the resistance adjustment mechanism, and the pressure sensor is connected to a processor, and the processor is used to judge and calculate the pressure change value in the transmission resistance adjustment mechanism.

[0018] The present application provides a sliding bearing seat structure and a training device, which can adaptively change the resistance of the pivot turning according to the sliding position of the sliding bearing seat, and can accurately match the requirements for the pivot rotation resistance under different work needs, thereby ensuring the rationality of the equipment operation; the fixed seat provides a stable movable support point for the height adjustment shaft; the position of the sliding bearing seat can be flexibly adjusted through the cooperation of the height adjustment shaft and the linkage shaft, thereby enhancing the adjustability of the structure; the positioning mechanism can lock the position of the sliding bearing seat to ensure the safety during the pivot rotation movement; the lifting mechanism can not only move synchronously with the sliding bearing seat, but also convert the sliding kinetic energy into a stronger torque to transmit it to the resistance adjustment mechanism, thereby realizing the rational conversion and utilization of kinetic energy; the resistance adjustment mechanism and the lifting mechanism cooperate to realize the effective adjustment of the pivot rotation resistance, and can ensure that the pivot has the required resistance and reset environment when rotating, thereby improving the stability and adaptability of the equipment under different working conditions, thereby optimizing the overall performance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A structural schematic diagram of a sliding bearing seat structure provided in an embodiment of the present application is shown;

[0020] Figure 2 A schematic diagram of a three-dimensional cross-sectional structure of a sliding bearing seat structure provided in an embodiment of the present application is shown;

[0021] Figure 3 A schematic diagram of a side cross-sectional structure of a sliding bearing seat structure provided in an embodiment of the present application is shown;

[0022] Figure 4 A schematic diagram showing the position of a connecting rod provided in an embodiment of the present application is shown;

[0023] Figure 5 A schematic diagram of the structure of a fixing base provided in an embodiment of the present application is shown;

[0024] Figure 6 A schematic diagram of the structure of the protrusion and the clamping groove provided in the embodiment of the present application is shown;

[0025] Figure 7 A schematic diagram showing the position of a resistance adjustment mechanism provided in an embodiment of the present application is shown;

[0026] Figure 8 Shows Figure 7 A local enlarged structural diagram of the part;

[0027] Fig. 9 A schematic diagram of the structure of the resistance adjustment mechanism provided in an embodiment of the present application is shown;

[0028] Fig.10 A schematic diagram of the structure of the inclined surface provided in an embodiment of the present application is shown;

[0029] Fig.11 A schematic diagram of the structure of a training device provided in an embodiment of the present application is shown;

[0030] Fig.12 A schematic diagram showing the positions of the operating knobs and storage slots provided in an embodiment of the present application is shown.

[0031] In the figure: 10, pivot, 20, upper bearing seat, 21, bearing seat side shell, 30, sliding bearing seat, 40, fixed seat, 50, height adjustment shaft, 60, linkage shaft, 70, positioning mechanism, 80, lifting mechanism, 90, resistance adjustment mechanism, 51, wire control component, 52, storage slot, 53, gripper, 54, rotating shaft, 71, movable card plate, 72, controlled plate, 73, connecting rod, 81, first slider, 82, first rack, 83, second slider, 84, gear, 85, second rack, 86, fixed platform, 87, driving rod, 91, damping container, 92, lower piston, 93, upper piston, 94, ball seat, 711, bump, 721, clamping groove, 211, inclined surface, 511, operating knob. DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] See also Figures 1 to 10 and Fig.12As shown, the first aspect of the embodiment of the present application provides a sliding bearing seat structure, including a sliding bearing seat 30 arranged in the pivot 10, and an upper bearing seat 20 arranged on the end of the pivot 10, and also includes: a fixed seat 40, a height adjustment shaft 50, a linkage shaft 60, a positioning mechanism 70, a lifting mechanism 80 and a resistance adjustment mechanism 90;

[0035] The fixed seat 40 is fixedly arranged in the outer wall of the upper half of the pivot 10; the upper end of the height adjustment shaft 50 is rotatably connected to the inner side of the fixed seat 40; one end of the linkage shaft 60 is hinged to the inner side of the middle part of the height adjustment shaft 50, and the other end of the linkage shaft 60 is connected to the sliding bearing seat 30; the positioning mechanism 70 is arranged in the inner cavity of the upper half of the pivot 10, and the positioning mechanism 70 is located directly above the sliding bearing seat 30, and the positioning mechanism 70 is used to lock the position of the sliding bearing seat 30; the lifting mechanism 80 is arranged in the inner cavity of the upper half of the pivot 10, and the lifting mechanism 80 is connected to the positioning mechanism 70; the resistance adjustment mechanism 90 is arranged above the lifting mechanism 80, the bottom end of the resistance adjustment mechanism 90 is the resistance adjustment end, the resistance adjustment end is connected to the lifting mechanism 80, and the top end of the resistance adjustment mechanism 90 is the resistance application end, which is connected to the upper bearing seat 20, and is used to change the resistance of the sliding bearing seat 30 and the height adjustment shaft 50 rotating in the upper bearing seat 20.

[0036] The sliding bearing seat structure provided in the embodiment of the present application is mainly used to realize adaptively changing the resistance of the pivot 10 to the turning according to the sliding position of the sliding bearing seat 30; specifically, the fixed seat 40 in the present structure is installed on the outer wall of the upper half of the pivot 10, and the fixed seat 40 provides a movable support point for the height adjustment shaft 50; the upper end of the height adjustment shaft 50 is rotatably connected to the inner side of the fixed seat 40, and the rotation thereof can drive the linkage shaft 60 to move; one end of the linkage shaft 60 is hinged to the inner side of the middle part of the height adjustment shaft 50, and the other end is connected to the sliding bearing seat 30, which can transmit the height adjustment movement of the height adjustment shaft 50 to the sliding bearing seat 30, thereby adjusting the position of the sliding bearing seat 30; the positioning mechanism 70 is located on the pivot 10 directly above the sliding bearing seat 30 The half inner cavity can lock the position of the sliding bearing seat 30 to ensure that the sliding bearing seat 30 maintains a stable and fixed position during operation, and then executes the rotation movement of the pivot 10 to ensure the safety of the equipment; the lifting mechanism 80 is connected to the positioning mechanism 70, and the lifting mechanism 80 can move synchronously with the sliding bearing seat 30. At the same time, the lifting mechanism 80 reasonably uses the sliding kinetic energy of the sliding bearing seat 30 and converts it into a stronger torque output to the resistance adjustment mechanism 90; the resistance adjustment mechanism 90 is arranged above the lifting mechanism 80, and the resistance adjustment end thereof is connected to the lifting mechanism 80. Through the cooperation with the lifting mechanism 80, the resistance adjustment effect of the rotation of the pivot 10 is realized, and the resistance application end at the top of the resistance adjustment mechanism 90 is connected to the upper bearing seat 20;

[0037] Therefore, by moving the sliding bearing seat 30, the environment inside the resistance adjustment mechanism 90 is indirectly changed. By changing the environment inside the resistance adjustment mechanism 90, the resistance to the rotation of the height adjustment shaft 50 and the pivot 10 in the upper bearing seat 20 is changed synchronously. Therefore, the present structure can flexibly adjust the position and rotational resistance of the sliding bearing seat 30 according to work requirements, thereby ensuring that the rotation of the pivot 10 has a resistance environment and a reset environment that meet the requirements.

[0038] like Figure 5 , Figure 7 and Fig.12 As shown, in some examples, further, the height adjustment shaft 50 is provided with: a wire control component 51 and a storage groove 52, one end of the wire control component 51 is connected to the operating knob 511 at the outer end of the height adjustment shaft 50, and the other end of the wire control component 51 extends to the positioning mechanism 70 in the inner cavity of the upper half of the pivot 10; the storage groove 52 is opened at the bottom end of the height adjustment shaft 50, and the storage groove 52 matches the shape and size of the linkage shaft 60.

[0039] In this example, the wire control component 51 adopts a structure similar to that of a bicycle brake cable. A movable steel wire is arranged inside the brake cable. One end of the steel wire is connected to the operating knob 511 at the outer end of the height adjustment shaft 50. When the operator turns or presses the operating knob 511, the steel wire moves accordingly, driving the positioning mechanism 70 in the upper half of the inner cavity of the pivot 10 to realize the positioning function, thereby controlling the working state of the positioning mechanism 70, and realizing the control and locking of the sliding bearing seat 30 after the position is adjusted. There is no need to manually operate the positioning mechanism 70 at close range, thereby improving the convenience and safety of operation; the storage groove 52 is opened at the bottom end of the height adjustment shaft 50 and matches the shape and size of the linkage shaft 60. Therefore, the linkage shaft 60 can be stored in the storage groove 52 when it moves to the bottom with the height adjustment shaft 50, ensuring that the overall device has a reasonable footprint.

[0040] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig.10As shown, in some examples, further, the positioning mechanism 70 includes: an active clamping plate 71, a controlled plate 72 and a connecting rod 73, the active clamping plate 71 can move between a locking position and a release position inwardly in the upper half of the main shaft, and the middle part of the active clamping plate 71 is connected to the wire control assembly 51; the controlled plate 72 can be moved along the length direction of the pivot 10 and clamped in the inner cavity of the upper half of the pivot 10, and when the active clamping plate 71 is in the locking position, the active clamping plate 71 is clamped into the controlled plate 72; the top end of the connecting rod 73 is fixedly connected to the bottom end of the controlled plate 72, and the bottom end of the connecting rod 73 is fixedly connected to the top end of the sliding bearing seat 30.

[0041] In this example, it should be noted that the movable card plate 71 is connected to the steel wire in the wire control assembly 51. When the wire control assembly 51 receives the operation of the operating knob 511 at the outer end of the height adjustment shaft 50, the movable card plate 71 is driven by the steel wire to move in the inner cavity of the upper half of the pivot 10. Figure 5 As shown, the movable clamping plate 71 moves in the direction of the height adjustment shaft 50, and the controlled plate 72 is now separated from the movable clamping plate 71. The position of the controlled plate 72 can move up and down freely, so the connecting rod 73 and the position of the sliding bearing seat 30 can also slide synchronously in the pivot 10. The operator can lift the height adjustment shaft 50 to the desired working position, and then release the operating knob 511. Under the action of the spring elasticity in the wire control component 51, the movable clamping plate 71 moves to the locked position and clamps into the controlled plate 72 to prevent the controlled plate 72 from moving along the length direction of the pivot 10. At this time, the controlled plate 72 fixes the sliding bearing seat 30 in the corresponding position through the connecting rod 73, and the height adjustment shaft 50 is synchronously maintained at the current height position to ensure its stability; it is convenient to quickly adjust its position according to actual needs, and it is highly convenient to use.

[0042] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig.10As shown, in some examples, further, the lifting mechanism 80 includes: at least one first slider 81, a first rack 82, at least one second slider 83, a gear 84, a second rack 85, a fixed platform 86 and a driving rod 87, at least one first slider 81 can be slidable along the length direction of the pivot 10 and is arranged in the inner cavity of the upper half of the pivot 10 and is located above the controlled plate 72; the first rack 82 is fixedly connected to the first slider 81, and the bottom end of the first rack 82 is fixedly connected to the controlled plate 72; at least one second slider 83 is connected to the first slider 81 is parallel to the moving direction of the second slider 83, and the second slider 83 is arranged on the side of the first slider 81 away from the movable clamping plate 71; the gear 84 is rotatably connected to the second slider 83 and meshes with the first rack 82; the second rack 85 is fixedly installed in the inner cavity of the upper half of the pivot 10 and is arranged parallel to the first rack 82, and the second rack 85 is also meshed and connected to the gear 84; the fixed platform 86 is fixedly installed on the top of all the second sliders 83; the driving rod 87 is fixedly arranged on the top of the fixed platform 86, and the top of the driving rod 87 extends into the resistance adjustment mechanism 90.

[0043] In this example, the first slider 81 can be slidably placed in the inner cavity of the upper half of the pivot 10 and above the controlled plate 72 along the length direction of the pivot 10, and is fixedly connected to the first rack 82. The bottom end of the first rack 82 is connected to the controlled plate 72, so that when the sliding bearing seat 30 slides, it synchronously drives the controlled plate 72 and the first slider 81 to move synchronously, wherein the first slider 81 and the controlled plate 72 can be in the same slide rail. The second slider 83 is parallel to the moving direction of the first slider 81, and their paths are parallel to the length direction of the pivot 10. The gear 84 is fixed on the second slider 83 and meshes with the first rack 82. The number of the second sliders 83 can be two, and the gear 84 itself can rotate between the two second sliders 83. The second rack 85 is fixed to the inner cavity of the upper half of the pivot 10 and is also meshed with the gear 84, thereby driving the gear 84 to rotate during the rising process of the second slider 83. The fixed platform 86, the drive rod 87 and the slider are fixedly arranged. The drive rod 87 is in a straight line state and can be inserted into the resistance adjustment mechanism 90 in a straight-in and straight-out manner to trigger environmental changes in the resistance adjustment mechanism 90 to achieve the corresponding resistance adjustment effect.

[0044] Working principle: When the sliding bearing seat 30 moves up due to the lifting action of the height adjustment shaft 50, the sliding bearing seat 30 drives the first slider 81 to move up synchronously through the connecting rod 73. Since the first slider 81 is provided with a first rack 82, the first rack 82 will also move up synchronously during this movement process, and drive the gear 84 to move up. Since the gear 84 is synchronously meshed between the first rack 82 and the second rack 85, the gear 84 will rotate under the restriction of the first rack 82 and the second rack 85 during the upward movement. Therefore, the upward movement of the first slider 81 will be consumed by the rotation of the gear 84, and the torque output will be increased, so that the driving rod 87 on the second slider 83 has a stronger torque to change the environment inside the resistance adjustment mechanism 90, and at the same time, it also reduces the force required to lift the height adjustment shaft 50, so that the operator can use it more smoothly.

[0045] like Figure 2 , Figure 3 , Figure 4 , Figure 7 and Fig. 9 As shown, in some examples, further, the resistance adjustment mechanism 90 includes: a damping container 91, a lower piston 92, an upper piston 93 and a ball seat 94, the damping container 91 is fixedly arranged in the inner cavity of the upper half of the pivot 10, the lower half of the damping container 91 is the resistance adjustment end, and the upper half of the damping container 91 is the resistance application end; the lower piston 92 is arranged in the resistance adjustment end of the damping container 91 so as to be linearly movable, and the lower piston 92 is fixedly connected to the drive rod 87; the upper piston 93 is arranged in the resistance application end of the damping container 91 so as to be linearly movable, and the top end of the upper piston 93 extends into the upper bearing seat 20; the ball seat 94 is fixedly arranged on the top end of the upper piston 93, and the ball seat 94 is movably arranged in the upper bearing seat 20.

[0046] In this example, the driving rod 87 drives the lower piston 92 to move linearly at the resistance adjustment end of the damping container 91, changing the air pressure environment in the damping container 91, thereby generating resistances of different sizes, which are transmitted to the upper piston 93 through the medium in the damping container 91; the upper piston 93 moves linearly at the resistance application end, transmits the received resistance to the top end, and acts on the part extending into the upper bearing seat 20; the ball seat 94 is fixed to the top end of the upper piston 93 and can be movably placed in the upper bearing seat 20, reducing the distance between the upper piston 93 and the upper bearing seat 20. The friction between the upper piston 93 and the height adjustment shaft 50 is caused when the pivot 10 rotates. Therefore, the upper piston 93 contacts the abutment positions at different heights, which can trigger the upper piston 93 to move in the resistance application end. However, the movement is limited by the air pressure in the damping container 91, thereby achieving the effect of having resistance to the rotation of the pivot 10. Finally, the position of the driving rod 87 and the lower piston 92 in the resistance adjustment end is adjusted to change the resistance of the sliding bearing seat 30 and the height adjustment shaft 50 to rotate in the upper bearing seat 20. The device is durable, does not rely on a spring structure, and has low noise during operation.

[0047] like Figure 2 , Figure 3 , Figure 4 and Fig.10 As shown, in some examples, further, a bearing seat side shell 21 is provided on the upper bearing seat 20, and a long slot with an arc-shaped projection surface is opened in the bottom end surface of the bearing seat side shell 21, and the long slot is coaxial with the rotation axis of the upper bearing seat 20; the top tube end surface of the long slot contacts the ball in the ball seat 94, wherein the contact surface between the ball and the inner wall of the top end of the long slot is an inclined surface 211, and the depths of different positions in the long slot are different.

[0048] In this example, the bearing seat side shell 21 plays a role in protecting the stability of the structure of the upper bearing seat 20. The key lies in the long slot opened at the bottom of the bearing seat side shell 21. The long slot is coaxial with the rotation axis of the upper bearing seat 20, ensuring the coaxiality of the ball seat 94 with the long slot when rotating. The ball of the ball seat 94 contacts the inner wall at the top of the long slot, and the contact surface is an inclined surface 211. The depth of the long slot is different at different positions. During the rotation of the pivot 10, the ball will roll along the long slot. Due to the change in the depth of the long slot and the existence of the inclined surface 211, the upper piston 93 will produce a displacement trend of different degrees when the ball rolls. This displacement is limited by the air pressure in the damping container 91, thereby changing the resistance of the upper bearing seat 20 during rotation, so that the device can adaptively adjust the rotation resistance according to the rotation situation to meet diverse usage requirements.

[0049] like Figure 6 and Figure 7As shown, in some examples, further, the movable card plate 71 is provided with one of the protrusions 711 or the snap-in grooves 721 equidistant along the length direction of the pivot 10; the controlled plate 72 is provided with the other of the protrusions 711 or the snap-in grooves 721 equidistant along the length direction of the pivot 10, and the movable card plate 71 can be snapped into the controlled plate 72 through the protrusions 711 and the snap-in grooves 721.

[0050] In this example, the protrusion 711 or the engaging groove 721 on the movable card plate 71 is used to cooperate with the corresponding engaging groove 721 or protrusion 711 on the controlled board 72 to realize the engaging function. The contact surface of the protrusion 711 and the engaging groove 721 is a horizontal plane, and the engaging groove 721 and the protrusion 711 are also engaged in a horizontal straight line movement. When the wire control component 51 drives the movable card plate 71 to move, if the movable card plate 71 has a protrusion 711, it will be engaged in the engaging groove 721 corresponding to the controlled board 72 along the length direction of the pivot 10, or when the movable card plate 71 has a engaging groove 721, the protrusion 711 of the controlled board 72 11 will be stuck in it, thereby fixing the controlled plate 72 and preventing the controlled plate 72 from moving along the length direction of the pivot 10, and then fixing the position of the sliding bearing seat 30 through the connecting rod 73; and when the movable clamping plate 71 moves in the opposite direction and disengages from the clamping state, the controlled plate 72 can move freely, driving the sliding bearing seat 30 to change its position. Therefore, the setting of this example can control the positioning of the sliding bearing seat 30, ensure that the sliding bearing seat 30 and the height adjustment shaft 50 work stably and reliably when they are in the required positions, and can easily change their positions when adjustment is needed, thereby improving the operational flexibility of the entire device.

[0051] like Fig.11 and Fig.12 As shown, the embodiment of the present application further provides a training device in the second aspect, including a sliding bearing seat structure provided by any of the aforementioned technical solutions, and specifically also including a gripper 53, which is connected to the side of the outer end of the height adjustment shaft 50 through a rotating shaft 54 ​​and can be rotated along a horizontal axis; a pressure sensor (not shown in the figure) is also provided in the resistance adjustment mechanism 90, and the pressure sensor is connected to a processor, and the processor is used to judge and calculate the pressure change value in the transmission resistance adjustment mechanism 90.

[0052] The training device provided in this example is suitable for personal family use or community use, wherein the users include people of different age groups, such as children or adults. The exercises that can be performed using this device include but are not limited to chest expansion or chest clamping exercises, wherein users of different heights can lift the height adjustment shaft 50 in this device to the best and most comfortable use position. For example, when a child uses it, the height adjustment shaft 50 is lifted to a lower height, thereby driving the sliding bearing seat 30 to move with a smaller stroke. The sliding bearing seat 30 moves and the power output stroke converted by the lifting mechanism 80 is smaller, and the change to the environment in the resistance adjustment mechanism 90 is small, so that the rotation resistance value of the pivot 10 in the upper bearing seat 20 is low, which is more suitable for children to use. When an adult uses it, it needs to adjust it to the required position according to his or her own height. Similarly, because the height adjustment shaft 50 is lifted to a higher height, the resistance environment in the resistance adjustment mechanism 90 is greatly affected, and the resistance of the height adjustment shaft 50 when rotating along the axis of the pivot 10 is correspondingly enhanced, so that the device can adapt to the height of the user without the need for deliberate or complex additional setting of other equipment parameters;

[0053] In addition, the gripper 53 in the device is connected to the side of the outer end of the height adjustment shaft 50 through the rotating shaft 54 ​​and can rotate along the horizontal axis, which is convenient for users of different heights to grasp and perform corresponding movement training. The pressure sensor in the resistance adjustment mechanism 90 can monitor the internal pressure changes in real time and transmit the data to the processor. The processor judges and calculates the pressure change value based on the received data, and then grasps the resistance state of the equipment during operation. For example, the pressure value when the pivot 10 is not rotated can reflect the resistance of the current rotation of the pivot 10. During the rotation of the pivot 10, that is, during the operator's use of the device, the number of pressure changes sensed by the pressure sensor can generate the number of exercises of the current person using the device, thereby better generating training parameters and enhancing the user's training experience and training effect.

[0054] 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 sliding bearing seat structure, comprising a sliding bearing seat (30) arranged in a pivot (10), and an upper bearing seat (20) arranged on the end of the pivot (10), characterized in that: Also includes: A fixed seat (40) fixedly disposed within the outer wall of the upper half of the pivot (10); A height adjustment shaft (50), the upper end of which is rotatably connected to the inner side of the fixing seat (40); A linkage shaft (60), one end of which is hinged to the inner side of the middle portion of the height adjustment shaft (50), and the other end of the linkage shaft (60) is connected to the inside of the sliding bearing seat (30); a positioning mechanism (70) disposed in an inner cavity of the upper half of the pivot (10), and the positioning mechanism (70) is located directly above the sliding bearing seat (30), and the positioning mechanism (70) is used to lock the position of the sliding bearing seat (30); A lifting mechanism (80) is disposed in the inner cavity of the upper half of the pivot (10), and the lifting mechanism (80) is connected to the positioning mechanism (70); A resistance adjustment mechanism (90) is arranged above the lifting mechanism (80); the bottom end of the resistance adjustment mechanism (90) is a resistance adjustment end, which is connected to the lifting mechanism (80); the top end of the resistance adjustment mechanism (90) is a resistance application end, which is connected to the upper bearing seat (20) and is used to change the resistance of the sliding bearing seat (30) and the height adjustment shaft (50) when rotating in the upper bearing seat (20).

2. The sliding bearing seat structure according to claim 1, characterized in that: The height adjustment shaft (50) is provided with: a wire control component (51), one end of the wire control component (51) being connected to an operating knob (511) at the outer end of the height adjustment shaft (50), and the other end of the wire control component (51) extending to a positioning mechanism (70) in the inner cavity of the upper half of the pivot shaft (10); A receiving groove (52) is provided at the bottom end of the height adjustment shaft (50), and the shape and size of the receiving groove (52) match those of the linkage shaft (60).

3. The sliding bearing seat structure according to claim 2, characterized in that: The positioning mechanism (70) comprises: A movable clamping plate (71) capable of moving between a locking position inwardly disposed in the upper half of the main shaft and a release position, wherein a middle portion of the movable clamping plate (71) is connected to the wire control assembly (51); A controlled plate (72) is movable along the length direction of the pivot (10) and is clamped in the inner cavity of the upper half of the pivot (10); when the movable clamping plate (71) is in a locked position, the movable clamping plate (71) is clamped into the controlled plate (72); A connecting rod (73) has a top end fixedly connected to the bottom end of the controlled plate (72), and a bottom end of the connecting rod (73) is fixedly connected to the top end of the sliding bearing seat (30).

4. The sliding bearing seat structure according to claim 3, characterized in that: The lifting mechanism (80) comprises: At least one first sliding block (81) capable of sliding along the length direction of the pivot (10), disposed in the inner cavity of the upper half of the pivot (10), and located above the controlled plate (72); A first rack (82) is fixedly connected to the first sliding block (81); the bottom end of the first rack (82) is fixedly connected to the controlled plate (72); at least one second sliding block (83) parallel to the moving direction of the first sliding block (81), the second sliding block (83) being arranged on a side of the first sliding block (81) away from the movable clamping plate (71); a gear (84) rotatably connected to the second slider (83) and meshing with the first rack (82); A second rack (85) is fixedly mounted in the inner cavity of the upper half of the pivot (10) and is arranged parallel to the first rack (82). The second rack (85) is also meshedly connected to the gear (84); A fixed platform (86) fixedly mounted on the top of all the second sliding blocks (83); A driving rod (87) is fixedly mounted on the top end of the fixing platform (86), and the top end of the driving rod (87) extends into the resistance adjustment mechanism (90).

5. The sliding bearing seat structure according to claim 4, characterized in that: The resistance adjustment mechanism (90) comprises: A damping container (91) is fixedly arranged in the inner cavity of the upper half of the pivot (10), the lower half of the damping container (91) being a resistance adjustment end, and the upper half of the damping container (91) being a resistance application end; A lower piston (92) is disposed in a linearly movable manner within the resistance adjustment end of the damping container (91), and the lower piston (92) is fixedly connected to the driving rod (87); An upper piston (93) is disposed in a linearly movable manner within the resistance application end of the damping container (91), and a top end of the upper piston (93) extends into the upper bearing seat (20); A ball seat (94) is fixedly mounted on the top end of the upper piston (93), and the ball seat (94) is movably disposed in the upper bearing seat (20).

6. The sliding bearing seat structure according to claim 5, characterized in that: The upper bearing seat (20) is provided with a bearing seat side shell (21), and a long slot with an arc-shaped projection surface is provided in the bottom end surface of the bearing seat side shell (21), and the long slot is coaxial with the rotation axis of the upper bearing seat (20); The top pipe end face of the long slot contacts a ball in the ball seat (94), wherein the contact surface between the ball and the inner wall at the top end of the long slot is an inclined surface (211), and the depths at different positions in the long slot are different.

7. The sliding bearing seat structure according to claim 5, characterized in that: The movable clamping plate (71) is provided with one of a protrusion (711) or a clamping groove (721) which is equidistant along the length direction of the pivot (10); The controlled plate (72) is provided with a protrusion (711) or a clamping groove (721) which is equidistant along the length direction of the pivot (10), and the movable clamping plate (71) can be clamped into the controlled plate (72) via the protrusion (711) and the clamping groove (721).

8. A training device, characterized in that: The sliding bearing seat structure comprises the sliding bearing seat structure according to any one of claims 1 to 7, further comprising: A gripper (53), the gripper (53) being connected to the side of the outer end of the height adjustment shaft (50) via a rotating shaft (54) so ​​as to be rotatable along a horizontal axis; The resistance adjustment mechanism (90) is also provided with a pressure sensor, the pressure sensor being connected to a processor, and the processor being used to judge and calculate a pressure change value in the transmission resistance adjustment mechanism (90).

Images