Lifting support and far infrared therapeutic instrument
By using a gravity balance system between the inner cylinder and the counterweight, and a locking knob structure, the problem of existing lifting supports relying on external power sources has been solved, enabling labor-saving and stable height adjustment, and improving the ease of operation and stability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HELING SMART MEDICAL TECHNOLOGY (CHENGDU) CO LTD
- Filing Date
- 2025-09-25
- Publication Date
- 2026-08-04
AI Technical Summary
Existing lifting supports rely on external power sources, have complex structures and high costs, and are difficult to achieve labor-saving and stable height adjustment.
An inner cylinder and a counterweight are connected by pulleys and flexible traction components to form a gravity balance system. Combined with a locking knob and rolling bearing assembly, the inner cylinder remains stationary under the gravity of the counterweight.
It reduces the external force required for operation, improves the stability and ease of operation of the equipment, avoids rigid collisions and wear of moving parts, and extends the service life of the equipment.
Smart Images
Figure CN224592984U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a lifting support and a far-infrared therapy device. Background Technology
[0002] In many fields, such as medical equipment, industrial production, and daily office work, height-adjustable lifting stands are a common auxiliary device. These devices are typically required to smoothly and steadily raise or lower objects of a certain weight and reliably stop at the desired position.
[0003] To achieve this function, existing technologies often employ transmission and locking mechanisms such as gas springs, electric actuators, or lead screws and nuts. However, these solutions may have limitations in specific application scenarios, such as complex structures, high manufacturing costs, or reliance on external power sources.
[0004] Therefore, it is necessary to design a lifting support that can adjust its height without relying on an external power source: one that saves effort while taking into account both ease of operation and structural stability. Utility Model Content
[0005] To address the above issues and overcome the shortcomings of existing technologies, this utility model provides a lifting support to overcome the problems in the background art. In this lifting support, the inner cylinder and counterweight form a gravity balance system via pulleys and a flexible traction component. Therefore, the inner cylinder remains stationary under the gravity of the counterweight. Far-infrared therapy devices using this lifting support can save effort while maintaining ease of operation and structural stability.
[0006] To achieve the above objectives, this utility model provides the following technical solution: This utility model lifting support includes: A base on which an outer cylinder is mounted; the outer cylinder has a hollow cavity inside and screw holes on its side walls; The inner cylinder is slidably installed within the cavity of the outer cylinder; A locking knob includes an operating part and a screw that is threaded into the screw hole; by tightening the screw, the end of the screw abuts against the inner cylinder to restrict the sliding of the inner cylinder; A counterweight carriage, which is mounted on the base; The counterweight is slidably connected to the counterweight carriage; A flexible traction component, one end of which is connected to the lower part of the inner cylinder, and the other end, after passing over a pulley rotatably mounted on the outer cylinder, is connected to the counterweight; wherein, The inner cylinder and the counterweight form a gravity balance system through the pulley and the flexible traction member, so that the inner cylinder remains stationary under the gravity of the counterweight.
[0007] Furthermore, the length of the flexible traction member is configured as follows: When the inner cylinder rises to its highest position, the bottom surface of the counterweight block does not contact the counterweight slide. When the inner cylinder descends to its lowest position, the bottom surface of the inner cylinder does not contact the outer cylinder.
[0008] Furthermore, the outer cylinder has an axially elongated groove extending along its axial direction on its side wall; A connecting arm is fixedly connected to the lower part of the inner cylinder, and the connecting arm extends to the outside of the outer cylinder via the axial long groove; One end of the flexible traction component is fixed to the connecting arm; in, The connecting arm can slide within the axial long groove.
[0009] Furthermore, it further includes: A slide rail groove is formed on the side wall of the counterweight carriage facing the counterweight block; The first roller makes rolling contact with the slide rail groove and rotates in the first direction; The second roller makes rolling contact with the side wall of the counterweight carriage perpendicular to the first direction and rotates in the second direction; in, The first direction and the movement direction of the counterweight form a first plane; the first roller and the slide rail groove cooperate to restrict the counterweight within the first plane; The second direction and the direction of movement of the counterweight form a second plane; the second roller cooperates with the side wall of the counterweight carriage to restrict the counterweight within the second plane.
[0010] Furthermore, a buffer block is installed on the side of the top of the counterweight carriage facing the counterweight block; When the counterweight rises to its highest point, the buffer block is used to reduce the impact force between the counterweight and the top of the counterweight carriage.
[0011] Furthermore, the counterweight includes a basic counterweight and multiple adjustable counterweights.
[0012] Furthermore, it further includes: Multiple sets of rolling bearing assemblies, including bearing pins mounted on the outer cylinder and rolling bearings rotatably mounted on the bearing pins; the outer ring working surface of the rolling bearings makes rolling contact with the outer surface of the inner cylinder; in, The inner cylinder is slidably fitted to the outer cylinder via the rolling bearing assembly.
[0013] Furthermore, at least one set of the rolling bearing assemblies has an eccentric bearing pin. in, The gap between the outer ring working surface of the rolling bearing and the outer surface of the inner cylinder can be adjusted by adjusting the rotation angle of the eccentric bearing pin.
[0014] Furthermore, it further includes: Multiple casters are mounted on the lower part of the base; The counterweights are mounted on the base, and their weight and distribution are configured as follows: It can keep the lifting support balanced during the movement of the inner cylinder and counterweight.
[0015] Based on the same inventive concept, this utility model also discloses a vertical far-infrared therapy device, comprising: The lifting support mentioned above; At least one far-infrared radiation lamp head is installed on the upper part of the inner cylinder of the lifting bracket.
[0016] This utility model has at least the following advantages or beneficial effects: This invention employs a base, an outer cylinder, and an inner cylinder slidably installed within its cavity, providing basic support and lifting functions. It also utilizes a mechanical locking structure consisting of a locking knob, a screw hole, and a screw rod, which allows the inner cylinder to be fixed at any height. Furthermore, pulleys and a flexible traction component form a balancing system between the inner cylinder and the counterweight, ensuring the inner cylinder remains stationary under the weight of the counterweight. Overall, this invention reduces the external force required to raise and lower the inner cylinder; and when no external force is present, the inner cylinder can maintain a stable position with the aid of the counterweight.
[0017] This invention employs a flexible traction component with a specific length configuration. This length is set at the two extreme positions of the lifting stroke, maintaining a certain gap between the bottom surface of the counterweight block and the counterweight slide, as well as between the bottom surface of the inner cylinder and the outer cylinder. Overall, this invention effectively prevents rigid collisions of moving parts at the end positions, thus avoiding impact noise and wear.
[0018] This invention employs at least one set of eccentric bearing pins as the mounting shafts for the rolling bearing assembly. Rotating these eccentric shafts changes the radial distance between the rolling bearing and the inner wall of the outer cylinder. Overall, this invention can compensate for manufacturing and assembly tolerances, as well as wear caused by long-term use, and conveniently adjust and restore the clearance between the inner and outer cylinders. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the overall structure of the lifting support; Figure 2 Left view of the lifting support; Figure 3 A schematic diagram of the outer cylinder, inner cylinder, rolling bearing assembly, and locking knob structure; Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle; Figure 5 for Figure 3 Top view of the structure at point A (excluding the locking knob); Figure 6 for Figure 3 Top view of the structure at point A (excluding the rolling bearing assembly); Figure 7 This is a schematic diagram of the counterweight slide and counterweight block structure of the lifting support; Figure 8 for Figure 7 Z-axis view of the counterweight slide and counterweight block structure of the central lifting support (excluding the adjustable counterweight block); Figure 9 This is a schematic diagram of a vertical far-infrared therapy device.
[0021] Figure label: 1-Base; 11-Cast wheel; 12-Counterweight; 2-Outer cylinder; 21-Screw hole; 22-Axial long slot; 3-Inner cylinder; 31-Connecting arm; 4-Locking knob; 41-Operating part; 42-Screw; 5-Counterweight carriage; 51-Slide rail groove; 52-Buffer block; 6-Counterweight; 61-Basic counterweight; 62-Adjustable counterweight; 63-First roller; 64-Second roller; 7- Flexible traction component; 8-Pulley; 9-Rolling bearing assembly; 91-Bearing pin; 911-Eccentric bearing pin; 92-Rolling bearing; 101-Lifting bracket; 102-Far-infrared radiation lamp head. Detailed Implementation
[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0023] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0024] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0025] In this utility model, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various parts or elements of this utility model and do not specifically refer to any part or element in this utility model. They should not be construed as limitations on this utility model.
[0026] In this utility model, terms such as "fixed", "connected", and "linked" should be interpreted broadly, indicating that it can be a fixed connection, an integral connection, or a detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. For relevant scientific researchers or technicians in this field, the specific meaning of the above terms in this utility model can be determined according to the specific circumstances, and should not be construed as a limitation of this utility model.
[0027] The embodiments of this utility model will be described in detail below.
[0028] This utility model discloses a lifting support. The lifting support is equipped with a balancing system consisting of an inner cylinder 3, a counterweight 6, pulleys 8, and a flexible traction component 7. Its core function is to utilize the gravity of the counterweight 6 to balance the weight of the inner cylinder 3 and the load (such as a far-infrared radiation lamp head) mounted on it. This balancing system allows the user to overcome only the internal friction and inertial forces of the system, rather than the entire weight of the load, during lifting operations. This significantly reduces the external force required for the user to lift the inner cylinder 3, achieving labor-saving operation. Simultaneously, this balancing system can achieve static balance at any position, ensuring that the inner cylinder 3 and the load tend to maintain their current position without external intervention, thus enhancing the stability of the equipment. Details are as follows: Figure 1 This is a schematic diagram of the overall structure of the lifting support; Figure 2Left view of the lifting support; Figure 3 This is a schematic diagram of the outer cylinder, inner cylinder, rolling bearing assembly, and locking knob structure. As can be seen from the diagram: The base 1 is the basic support structure of the lifting bracket, providing a stable installation platform and bearing the weight of the entire device. Multiple casters 11 are installed on the lower part of the base 1, facilitating user movement of the entire device. In this embodiment, the casters 11 are four swivel casters with brakes. Additionally, a counterweight 12 is installed on the lower part of the base 1. The weight and distribution of the counterweight 12 are specifically configured to resist the overturning torque generated by the movement of the inner cylinder 3 and the counterweight 6, thereby increasing the overall stability of the device.
[0029] The outer cylinder 2 is fixedly installed on the base 1 by welding or bolting. The outer cylinder 2 has a hollow cavity inside, which serves to accommodate and guide the inner cylinder 3 during its lifting and lowering movement. In this embodiment, the outer cylinder 2 is a square cylinder; in other embodiments, the outer cylinder 2 can also be a circular cylinder. Additionally, the side wall of the outer cylinder 2 is provided with screw holes 21 and an axial groove 22. The axial groove 22 extends axially along the outer cylinder 2, and its width can range from 10mm to 30mm, and its length can range from 500mm to 1500mm.
[0030] The inner cylinder 3 is slidably installed within the cavity of the outer cylinder 2. The inner cylinder 3 directly bears the load requiring lifting and lowering, and moves vertically within the outer cylinder 2. A connecting arm 31 is installed at the lower part of the inner cylinder 3 via welding or bolting. The connecting arm 31 extends outward from the outer cylinder 2 through an axial groove 22 and can move with the inner cylinder 3 within the axial groove 22. The connecting arm 31 provides a reliable force transmission connection point for connecting with other components of the inner cylinder 3. This design prevents interference with the sidewall of the outer cylinder 2 when other components connect to the inner cylinder 3, making the connection more direct.
[0031] Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle; Figure 5 for Figure 3 Top view of the structure at point A (excluding locking knob 4). As can be seen from the figure, to make the sliding of the inner cylinder 3 within the outer cylinder 2 smoother, multiple sets of rolling bearing assemblies 9 are installed on the outer cylinder 2 via bearing seats. The function of the rolling bearing assemblies 9 is to convert the sliding friction between the inner cylinder 3 and the outer cylinder 2 into rolling friction, reducing the motion resistance of the inner cylinder 3.
[0032] Each rolling bearing assembly 9 includes a bearing pin 91 and a rolling bearing 92 rotatably mounted thereon. The outer ring working surface of the rolling bearing 92 rolls in contact with the outer surface of the inner cylinder 3 to form a rolling friction pair. Furthermore, at least one set of rolling bearing assemblies 9 has an eccentric bearing pin 911. Its function is to fine-tune the clearance between the outer ring working surface of the rolling bearing 92 and the outer surface of the inner cylinder 3 by adjusting the rotation angle of the eccentric bearing pin 911; the eccentricity range can be from 0.5 mm to 2 mm. This structure can be used to compensate for manufacturing tolerances or assembly errors of components, as well as clearances that gradually increase due to wear after long-term operation of the equipment. Therefore, multiple sets of rolling bearing assemblies 9 help restore a stable sliding fit between the inner cylinder 3 and the outer cylinder 2, thereby extending the equipment maintenance cycle and service life.
[0033] Figure 6 for Figure 3 Top view of the structure at point A (excluding rolling bearing assembly 9). As shown in the figure, the locking knob 4 is mounted on the outer cylinder 2 to stop the inner cylinder 3. The locking knob 4 includes an operating part 41 exposed outside the outer cylinder 2 and a screw 42 threaded into the screw hole 21. The function of the locking knob 4 is to tighten the screw 42 so that its end abuts against the inner cylinder 3, using friction to limit the sliding of the inner cylinder 3, thereby fixing the inner cylinder 3 at any height. The operating part 41 can be made of plastic or rubber to increase operating comfort, and the screw 42 can be made of steel with a rubber pad at its end to increase friction. When it is necessary to raise or lower the inner cylinder 3, loosening the screw 42 releases the fixation of the inner cylinder 3, thereby adjusting the height of the inner cylinder 3.
[0034] Figure 7 This is a schematic diagram of the counterweight slide and counterweight block structure of the lifting support; Figure 8 for Figure 7 The figure shows a z-axis view of the counterweight slide and counterweight block structure of the lifting support (excluding the adjustable counterweight block 62). As can be seen from the figure, the counterweight slide 5 is fixedly installed on the base 1 by bolts or welding. The function of the counterweight slide 5 is to provide precise guidance for the up-and-down movement of the counterweight block 6. The side wall of the counterweight slide 5 facing the counterweight block 6 is provided with a slide rail groove 51, which cooperates with the first roller 63 to form a guide surface. In this embodiment, the depth of the slide rail groove 51 can range from 10mm to 25mm, and the width can range from 15mm to 35mm.
[0035] The counterweight 6 is rotatably connected to the counterweight carriage 5 via a first roller 63 and a second roller 64. The function of the counterweight 6 is to provide gravity that balances the inner cylinder 3 and its load. The counterweight 6 includes a basic counterweight 61 and multiple adjustable counterweights 62. Therefore, the total counterweight mass can be flexibly adjusted by increasing or decreasing the size of the adjustable counterweights 62, thereby precisely matching loads of different weights. The weight range of the basic counterweight 61 can be from 5 kg to 10 kg, and the weight range of a single adjustable counterweight 62 can be from 0.5 kg to 2 kg. In this embodiment, six adjustable counterweights 62 are provided, each weighing 0.5 kg; in other embodiments, there can be three or four adjustable counterweights 62, each weighing 0.7 kg or 1 kg.
[0036] To enhance the stability of the counterweight 6 as it moves up and down along the counterweight slide 5, a first roller 63 and a second roller 64 are mounted on the counterweight 6 via bearings, allowing the counterweight 6 to rise and fall smoothly under the guidance of the counterweight slide 5. The function of the first roller 63 and the second roller 64 is to guide the movement of the counterweight 6 and suppress its swaying. Specifically, the first roller 63 rolls in contact with the slide rail groove 51 and rotates in a first direction, limiting the counterweight 6 to move within a first plane formed by the first direction and the direction of movement of the counterweight 6; the second roller 64 rolls in contact with the side wall of the counterweight slide 5 perpendicular to the first direction and rotates in a second direction, limiting the counterweight 6 to move within a second plane formed by the second direction and the direction of movement of the counterweight 6. Figure 8 In the middle, the counterweight 6 moves in the y-axis direction; the first direction is the x-axis direction, and the first plane is the xy plane; the second direction is the z-axis direction, and the second plane is the yz plane.
[0037] In addition, multiple buffer blocks 52 are installed on the top side of the counterweight slide 5 facing the counterweight 6 by bolting or bonding. The buffer blocks 52 can be made of rubber or polyurethane elastomer material. Their function is to absorb kinetic energy through the elastic deformation of their material when the counterweight 6 rises to its highest point, thereby reducing the impact force between the counterweight 6 and the top of the counterweight slide 5.
[0038] The pulley 8 is rotatably mounted on the outer cylinder 2 via a pin and rolling bearing. The function of the pulley 8 is to change the direction of force transmission of the flexible traction component 7. The pulley 8 can be made of cast iron or aluminum alloy, and the groove shape can be U-shaped or V-shaped.
[0039] Therefore, one end of the flexible traction component 7 is connected to the connecting arm 31 at the lower part of the inner cylinder 3, and the other end passes over the pulley 8 and connects to the counterweight 6. The function of the flexible traction component 7 is to transmit the force between the inner cylinder 3 and the counterweight 6. The flexible traction component 7 can be made of steel wire rope, nylon rope, or high-strength polyester webbing, and its diameter or width can range from 2mm to 5mm. The length of the flexible traction component 7 is specifically configured: when the inner cylinder 3 rises to its highest position, there is a gap of 10mm to 50mm between the bottom surface of the counterweight 6 and the bottom of the counterweight slide 5; when the inner cylinder 3 descends to its lowest position, there is a gap of 10mm to 50mm between the bottom surface of the inner cylinder 3 and the inner bottom surface of the outer cylinder 2. The above-mentioned length configuration of the flexible traction component 7 is to avoid rigid collisions of moving parts at the end position, which would generate impact noise and wear.
[0040] Specifically, the lifting bracket in this embodiment adopts the following: (1) A balance system consisting of outer cylinder 2, inner cylinder 3, counterweight 6, pulley 8, and flexible traction component 7; (2) The clearance adjustment structure consisting of multiple sets of rolling bearing assemblies 9 and eccentric bearing pins 911 between the outer cylinder 2 and the inner cylinder 3; (3) The mechanical locking structure consisting of the outer cylinder 2, the inner cylinder 3, and the locking knob 4; (4) The limiting and guiding structure formed by the first roller 63 and the second roller 64 of the counterweight slide 5 and the counterweight block 6.
[0041] These structural features work together to reduce the external force required for lifting operations and maintain positional stability through system self-balancing when no external force is needed. Therefore, they reduce the operator's workload, making height adjustment more effortless, smooth, and precise. They also have positive effects on preventing collisions at the ends of moving parts, suppressing counterweight sway, compensating for wear gaps between the outer cylinder 2 and inner cylinder 3, facilitating equipment movement, and enhancing overall stability.
[0042] Another embodiment of this utility model discloses a vertical far-infrared therapy device. The details are as follows: Figure 9 This is a schematic diagram of a vertical far-infrared therapy device. As can be seen from the diagram, the lifting support 101 in this therapy device is the lifting support in the first embodiment of this utility model. Multiple far-infrared radiation lamp heads 102 are mounted on the upper part of the inner cylinder of the lifting support 101 via a bracket. In this embodiment, five far-infrared radiation lamp heads 102 are provided; in other embodiments, the number of far-infrared radiation lamp heads 102 may be four, six, or other quantities.
[0043] Overall, the vertical far-infrared therapy device in this embodiment achieves all the beneficial effects of the lifting bracket in the first embodiment. For example: (1) the far-infrared radiation lamp head 102 is raised and lowered with ease through a counterweight balancing system; (2) the treatment height of the far-infrared radiation lamp head 102 is fixed through a mechanical locking structure; and (3) the height adjustment process of the far-infrared radiation lamp head 102 is ensured through a gap adjustment structure. Therefore, the vertical far-infrared therapy device in this embodiment facilitates medical personnel in positioning the appropriate irradiation position and distance for patients according to clinical needs. To a certain extent, it achieves the labor-saving and stabilization of the raising and lowering process of the far-infrared radiation lamp head 102, as well as the convenience and durability of the overall equipment.
[0044] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A lifting support, characterized in that, include: A base (1) on which an outer cylinder (2) is installed; the outer cylinder (2) has a hollow cavity inside and a screw hole (21) on its side wall. The inner cylinder (3) is slidably installed in the cavity of the outer cylinder (2); A locking knob (4) is installed on the outer cylinder (2) to lock the inner cylinder (3). A counterweight slide (5) is mounted on the base (1); The counterweight (6) is slidably connected to the counterweight slide (5); The flexible traction component (7) is connected at one end to the lower part of the inner cylinder (3) and at the other end to the counterweight (6) after passing around the pulley (8) rotatably mounted on the outer cylinder (2). in, The inner cylinder (3) and the counterweight (6) form a gravity balance system through the pulley (8) and the flexible traction member (7), so that the inner cylinder (3) remains stationary under the gravity of the counterweight (6).
2. The lifting support according to claim 1, characterized in that, The length of the flexible traction member (7) is configured as follows: When the inner cylinder (3) rises to the highest position, the bottom surface of the counterweight block (6) does not contact the counterweight slide (5). When the inner cylinder (3) descends to its lowest position, the bottom surface of the inner cylinder (3) does not contact the outer cylinder (2).
3. The lifting support according to claim 1, characterized in that: The outer cylinder (2) has an axially elongated groove (22) extending along its axial direction on its side wall. A connecting arm (31) is fixedly connected to the lower part of the inner cylinder (3), and the connecting arm (31) extends to the outside of the outer cylinder (2) via the axial long groove (22). One end of the flexible traction member (7) is fixed to the connecting arm (31); in, The connecting arm (31) can slide within the axial long groove (22).
4. The lifting support according to claim 1, characterized in that, Further includes: A slide rail groove (51) is formed on the side wall of the counterweight slide (5) facing the counterweight block (6); The first roller (63) rolls in contact with the slide rail groove (51) and rotates in the first direction; The second roller (64) rolls in contact with the side wall of the counterweight slide (5) perpendicular to the first direction and rotates in the second direction; in, The first direction and the movement direction of the counterweight (6) form a first plane; the first roller (63) and the slide rail groove (51) cooperate to restrict the counterweight (6) within the first plane; The second direction and the movement direction of the counterweight (6) form a second plane; the second roller (64) cooperates with the side wall of the counterweight slide (5) to restrict the counterweight (6) within the second plane.
5. The lifting support according to claim 1, characterized in that, A buffer block (52) is installed on the side of the top of the counterweight slide (5) facing the counterweight block (6); When the counterweight (6) rises to its highest point, the buffer block (52) is used to reduce the impact force between the counterweight (6) and the top of the counterweight slide (5).
6. The lifting support according to claim 1, characterized in that, The counterweight (6) includes a basic counterweight (61) and multiple adjustable counterweights (62).
7. The lifting support according to claim 1, characterized in that, Further includes: Multiple sets of rolling bearing assemblies (9) include a bearing pin (91) mounted on the outer cylinder (2) and a rolling bearing (92) rotatably mounted on the bearing pin (91); the outer ring working surface of the rolling bearing (92) is in rolling contact with the outer surface of the inner cylinder (3); in, The inner cylinder (3) is slidably fitted with the outer cylinder (2) through the rolling bearing assembly (9).
8. The lifting support according to claim 7, characterized in that, At least one set of the rolling bearing assemblies (9) has an eccentric bearing pin (911). in, By adjusting the rotation angle of the eccentric bearing pin (911), the gap between the outer ring working surface of the rolling bearing (92) and the outer surface of the inner cylinder (3) can be adjusted.
9. The lifting support according to claim 1, characterized in that, Further includes: Multiple casters (11) are mounted on the lower part of the base (1); A counterweight (12) is mounted on the base (1), and its weight and distribution position are configured as follows: The lifting support can be kept in balance during the movement of the inner cylinder (3) and the counterweight (6).
10. A far-infrared therapy device, characterized in that, include: The lifting support (101) according to any one of claims 1-9; At least one far-infrared radiation lamp head (102) is installed on the upper part of the inner cylinder of the lifting bracket (101).