Lifting stand column assembly, lifting stand column device and operating bed

Abstract

The utility model is suitable for the field of medical facilities, and provides a lifting stand column assembly, a lifting stand column device and an operating bed. The lifting stand column assembly comprises a first-stage stand column, a second-stage stand column, a friction assembly and a jackscrew assembly, the first-stage stand column is sleeved with the second-stage stand column in a lifting mode, and the friction assembly comprises a first friction piece arranged on the outer wall of the first-stage stand column and a second friction piece arranged on the inner wall of the second-stage stand column; when the second-stage stand column ascends to a first preset range relative to the first-stage stand column, the first friction piece and the second friction piece are attached together, the jackscrew assembly is arranged on the side, away from the first friction piece, of the second friction piece, and the jackscrew assembly is used for abutting against the second friction piece to extrude the first friction piece so as to fix the first-stage stand column and the second-stage stand column. In this way, the first-stage stand column and the second-stage stand column are in zero-clearance fit, and deviation between the first-stage stand column and the second-stage stand column is avoided. The second friction piece can continuously abut against the first friction piece by screwing down the jackscrew assembly.

Description

Technical Field

[0001] The utility model belongs to the field of medical facilities, and particularly relates to a lifting column assembly, a lifting column device and an operating bed. Background Art

[0002] An operating bed, also known as an operating table, is used to support a patient during an operation and adjust the body position according to the needs of the operation, providing a convenient operating environment for doctors. At present, the lifting function is a basic function of the operating bed, and the lifting function is mainly realized by the telescoping of a lifting motor. In the related art, the inner column and the outer column are in clearance fit, and the inner column and the outer column are fixed by using a setscrew and a friction plate in cooperation. However, there is a gap between the friction plate and the surface of the column. When assembling the inner column and the outer column, it is impossible to ensure a completely centered position. When the setscrew presses the friction plate to eliminate the gap, one setscrew is screwed a little more and the other setscrew is screwed a little less, and the outer column follows the setscrew and offsets to one side, resulting in the problem that the whole bed is not centered. Summary of the Utility Model

[0003] An embodiment of the utility model provides a lifting column assembly, aiming at solving the problem that the operating bed offsets due to the inability to be completely centered when the inner column and the outer column are assembled.

[0004] The embodiment of the utility model is implemented as follows. The utility model provides a lifting column assembly, including: a primary column, a secondary column, a friction assembly and a setscrew assembly. The secondary column is telescopically sleeved on the primary column. The friction assembly includes a first friction member disposed on the outer wall of the primary column and a second friction member disposed on the inner wall of the secondary column. When the secondary column rises relative to the primary column to a first predetermined range, the first friction member and the second friction member are in contact with each other. The setscrew assembly is disposed on a side of the second friction member away from the first friction member, and the setscrew assembly is used to abut against the second friction member to squeeze the first friction member to fix the primary column and the secondary column.

[0005] Furthermore, the lifting column assembly further includes a tertiary column, the tertiary column is telescopically sleeved on the secondary column, and the friction assembly further includes a third friction member disposed on the outer wall of the secondary column and a fourth friction member disposed on the inner wall of the tertiary column; when the tertiary column rises relative to the secondary column to a second predetermined range, the fourth friction member and the third friction member are in contact with each other.

[0006] Further, the setscrew assembly further includes a first setscrew and a second setscrew. The first setscrew is disposed on a side of the second friction member away from the first friction member, and the second setscrew is disposed on a side of the fourth friction member away from the third friction member. The first setscrew is used to abut against the second friction member to squeeze the first friction member so as to fix the first-stage column and the second-stage column. The second setscrew is used to abut against the fourth friction member to squeeze the third friction member so as to fix the second-stage column and the third-stage column.

[0007] Further, the first friction member is disposed near the top end of the first-stage column, the second friction member is disposed near the bottom end of the second-stage column, the third friction member is disposed near the top end of the second-stage column, and the fourth friction member is disposed near the bottom end of the third-stage column.

[0008] Further, the first-stage column includes a first guiding groove disposed in the vertical direction. A first guiding block is formed on the inner wall of the second-stage column, and at least a part of the first guiding block extends into the first guiding groove. The first friction member avoids the first guiding groove. The second-stage column includes a second guiding groove disposed in the vertical direction. A second guiding block is formed on the inner wall of the third-stage column, and at least a part of the second guiding block extends into the second guiding groove. The third friction member avoids the second guiding groove.

[0009] Further, the lifting column assembly further includes a base, and the first-stage column is disposed on the base.

[0010] An embodiment of the present invention further provides a lifting column device, including a shield assembly and the lifting column assembly according to any one of the above embodiments. The shield assembly surrounds the lifting column assembly, and the lifting column assembly can move along the vertical direction to drive the shield assembly to move along the vertical direction.

[0011] Further, the lifting column assembly includes a first-stage column, a second-stage column, and a third-stage column sleeved together in sequence from bottom to top. The shield assembly includes a first-stage housing, a second-stage housing, a third-stage housing, a fourth-stage housing, and a fifth-stage housing sleeved together in sequence from bottom to top. The fifth-stage housing is fixedly disposed with the third-stage column.

[0012] An embodiment of the present invention further provides an operating table, including a tabletop and the lifting column device according to any one of the above embodiments. The tabletop is disposed above the lifting column device, and the lifting column device can drive the tabletop to lift.

[0013] In the lifting column assembly, lifting column device, and operating bed according to the embodiments of the present application, the lifting column assembly includes a first-level column, a second-level column, a friction assembly, and a setscrew assembly. The second-level column is sleeved on the first-level column in a liftable manner. The friction assembly includes a first friction member disposed on the outer wall of the first-level column and a second friction member disposed on the inner wall of the second-level column. When the second-level column rises relative to the first-level column to a first predetermined range, the first friction member and the second friction member are attached together. The setscrew assembly is disposed on the side of the second friction member away from the first friction member, and the setscrew assembly is used to abut against the second friction member to squeeze the first friction member so as to fix the first-level column and the second-level column. In this way, the second-level column is sleeved on the first-level column and can move up and down relative to the first-level column. After the second-level column moves relative to the first-level column to a predetermined position, the first friction member and the second friction member are attached together, so that there is a zero-clearance fit between the first-level column and the second-level column, avoiding offset between the first-level column and the second-level column. At the same time, tightening the setscrew assembly can make the second friction member continuously abut against the first friction member, thereby defining the relative positions of the first-level column and the second-level column and ensuring stable connection between the first-level column and the second-level column. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a perspective view of the lifting column assembly provided by an embodiment of the present invention;

[0015] Figure 2 is a sectional view of the lifting column assembly provided by an embodiment of the present invention;

[0016] Figure 3 is a partial perspective view of the lifting column assembly provided by an embodiment of the present invention;

[0017] Figure 4 is a perspective view of the lifting column device provided by an embodiment of the present invention;

[0018] Figure 5 is a perspective view of the operating bed provided by an embodiment of the present invention.

[0019] DESCRIPTION OF THE REFERENCE NUMERALS IN THE DRAWINGS:

[0020] 100, lifting column assembly; 10, first-level column; 11, first guide groove; 20, second-level column; 21, second guide groove; 30, third-level column; 40, friction assembly; 41, first friction member; 42, second friction member; 43, third friction member; 44, fourth friction member; 50, setscrew assembly; 51, first setscrew; 52, second setscrew; 60, base; 61, shock-absorbing sheet; 200, lifting column device; 210, protective cover assembly; 211, first-level housing; 212, second-level housing; 213, third-level housing; 214, fourth-level housing; 215, fifth-level housing; 300, operating bed; 310, tabletop. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the purpose, technical solution and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] An embodiment of the present utility model provides a lifting column assembly, a lifting column device and an operating bed. The lifting column assembly includes a first-level column, a second-level column, a friction assembly and a setscrew assembly. The second-level column is sleeved on the first-level column in a liftable manner. When the second-level column rises relative to the first-level column, the first friction member and the second friction member are in zero-distance cooperation, that is, there is no gap between the first friction member and the second friction member. At the same time, the setscrew assembly can tightly hold the first friction member and the second friction member together, thereby avoiding the problem of deviation caused by a large gap between the first-level column and the second-level column. At the same time, tightening the setscrew assembly can make the second friction member continuously hold on the first friction member, thereby limiting the relative position of the first-level column and the second-level column and ensuring the stable connection between the first-level column and the second-level column.

[0023] Embodiment 1

[0024] Referring to Figure 1 and Figure 2 An embodiment of the present utility model is implemented as follows. The present utility model provides a lifting column assembly 100, which includes: a first-level column 10, a second-level column 20, a friction assembly 40 and a setscrew assembly 50. The second-level column 20 is sleeved on the first-level column 10 in a liftable manner. The friction assembly 40 includes a first friction member 41 disposed on the outer wall of the first-level column 10 and a second friction member 42 disposed on the inner wall of the second-level column 20. When the second-level column 20 rises relative to the first-level column 10 to a first predetermined range, the first friction member 41 and the second friction member 42 are attached together. The setscrew assembly 50 is disposed on the side of the second friction member 42 away from the first friction member 41. The setscrew assembly 50 is used to hold the second friction member 42 to press the first friction member 41 to fix the first-level column 10 and the second-level column 20.

[0025] In this embodiment, the lifting column assembly 100 is applied to the operating bed 300. The lifting column assembly 100 can move the tabletop 310 of the operating bed 300 up or down by the relative movement between the first-level column 10 and the second-level column 20, and then the tabletop 310 can be moved to a predetermined position. The lifting column assembly 100 is a common mechanical structure of modern operating beds 300, and is particularly widely used in multi-position electric lifting operating beds 300.

[0026] Specifically, the lifting column assembly 100 may include a motor and a transmission mechanism (not shown in the figure). The motor cooperates with the transmission mechanism to drive the secondary column 20 to move relative to the primary column 10 along the vertical direction, so that the tabletop 310 of the operating bed 300 can be raised to the required height. The first friction member 41 on the outer wall of the primary column 10 and the second friction member 42 on the inner wall of the secondary column 20 are in contact with each other when the secondary column 20 rises relative to the primary column 10 within a first predetermined range, restricting the freedom of movement between the primary column 10 and the secondary column 20 in the X and Y axis directions. In this way, the offset or skew of the tabletop 310 of the operating bed 300 can be avoided, improving the safety performance of the operating bed 300.

[0027] It can be understood that both the first friction member 41 and the second friction member 42 are in sheet-like structures. After the primary column 10 moves upward relative to the secondary column 20 to a suitable position, the first friction member 41 and the second friction member 42 start to contact each other. That is to say, the first predetermined range can be the height position commonly used for the operating bed 300 to ensure the reasonable adjustment of the operating bed 300. Of course, the highest limit position where the secondary column 20 rises relative to the primary column 10 is within the first predetermined range to ensure greater stability when the lifting column assembly 100 is in the limit position.

[0028] Embodiment 2

[0029] Refer to Figure 1 and Figure 2 On the basis of the above Embodiment 1, the second embodiment of the present utility model provides a lifting column assembly 100, wherein the size of the setscrew assembly 50 is M30x1.5.

[0030] In this embodiment, the setscrew assembly 50 can adopt a large-size setscrew of M30x1.5. The setscrew assembly 50 is arranged on the side of the second friction member 42 away from the first friction member 41, so that tightening the setscrew assembly 50 can press against the second friction member 42. Both the second friction member 42 and the first friction member 41 have a certain elastic modulus, which can ensure that there is a circular pressing surface with a diameter of 30 millimeters between the second friction member 42 and the first friction member 41, ensuring the stable connection between the primary column 10 and the secondary column 20.

[0031] Specifically, an installation hole can be formed on the secondary column 20, the installation hole is directly opposite to the second friction member 42, the setscrew assembly 50 can be arranged in the installation hole, and by rotating the setscrew assembly 50, it is possible to press against the second friction member 42, and further hold the second friction member 42 and the first friction member 41 together.

[0032] Further, in other embodiments, the second friction member 42 can be mounted on the setscrew assembly 50. Rotating the setscrew assembly 50 can drive the second friction member 42 to rotate relative to the first friction member 41, thereby realizing the movement of the second friction member 42 approaching or separating from the first friction member 41.

[0033] Of course, the setscrew assembly 50 can also have other sizes. In this embodiment, the specific size of the setscrew assembly 50 is not limited to meet different requirements. In order to increase the base area of the mating friction members as much as possible, a setscrew with a relatively large diameter size can be selected for the setscrew assembly 50.

[0034] Embodiment Three

[0035] Referring to Figure 1 and Figure 2 On the basis of the above Embodiment One, the third embodiment of the present utility model provides a lifting column assembly 100. Among them, the lifting column assembly 100 further includes a third-level column 30, the third-level column 30 is telescopically sleeved on the second-level column 20, and the friction assembly 40 further includes a third friction member 43 arranged on the outer wall of the second-level column 20 and a fourth friction member 44 arranged on the inner wall of the third-level column 30; when the third-level column 30 rises relative to the second-level column 20 to a second predetermined range, the fourth friction member 44 and the third friction member 43 are attached together.

[0036] In this way, the third-level column 30 can cooperate with the first-level column 10 and the second-level column 20 so that the tabletop 310 of the operating bed 300 can have a greater range of telescopic distance, ensuring that the tabletop 310 can be moved to a suitable position.

[0037] In this embodiment, the lifting column assembly 100 has a three-level component. The first-level column 10, the second-level column 20, and the third-level column 30 are in a state of being wrapped inside and outside. A plurality of limit buckles are fixedly connected to the top of the outer wall of the inner column, and a plurality of arc-shaped hooks corresponding to the limit buckles are fixed to the bottom of the inner wall of the outer column. That is to say, the first-level column 10 is the inner column, the second-level column 20 is the middle column, and the third-level column 30 is the outer column. When the lifting motor drives the outer column to rise, the outer column starts to rise until the arc-shaped hook at the bottom of the outer column engages with the buckle at the top of the middle column, thereby driving the middle column to rise.

[0038] In this embodiment, the specific number of the upright columns is not limited to meet different requirements. In this application, the lifting upright column assembly 100 is taken as an example of a three-stage assembly for illustration. Additionally, in this embodiment, the specific number and material of the friction assembly 40 are not limited to meet different requirements. For example, the material of the friction assembly 40 may include a polytetrafluoroethylene base material and additives, and the additives include at least one of carbon, graphite, glass fiber, bronze, and molybdenum disulfide. That is to say, the additives may be a combination of one or more of graphite, glass fiber, bronze, and molybdenum disulfide. Thus, the wear resistance effect of the friction assembly 40 can be improved.

[0039] In one embodiment, the friction coefficient of the friction assembly 40 is greater than 0 and less than 0.3. Thus, the wear resistance effect of the friction assembly 40 can also be improved.

[0040] Embodiment Four

[0041] Refer to Figure 1 and Figure 2 On the basis of the above-mentioned Embodiment Three, the fourth embodiment of the present utility model provides a lifting upright column assembly 100, wherein the setscrew assembly 50 further includes a first setscrew 51 and a second setscrew 52. The first setscrew 51 is arranged on the side of the second friction member 42 away from the first friction member 41, and the second setscrew 52 is arranged on the side of the fourth friction member 44 away from the third friction member 43. The first setscrew 51 is used to abut against the second friction member 42 to squeeze the first friction member 41 to fix the first-stage upright column 10 and the second-stage upright column 20. The second setscrew 52 is used to abut against the fourth friction member 44 to squeeze the third friction member 43 to fix the second-stage upright column 20 and the third-stage upright column 30.

[0042] Specifically, the number of the first setscrews 51 is the same as the number of the second friction members 42, and the number of the second setscrews 52 is the same as the number of the fourth friction members 44. In this way, the abutting fit between the first friction member 41 and the second friction member 42, and the abutting fit between the third friction member 43 and the fourth friction member 44 can be realized by respectively rotating the first setscrew 51 and the second setscrew 52.

[0043] Embodiment Five

[0044] Refer to Figure 2 and Figure 3 On the basis of the above-mentioned Embodiment Three, the fifth embodiment of the present utility model provides a lifting upright column assembly 100, wherein the first friction member 41 is arranged near the top end of the first-stage upright column 10, the second friction member 42 is arranged near the bottom end of the second-stage upright column 20, the third friction member 43 is arranged near the top end of the second-stage upright column 20, and the fourth friction member 44 is arranged near the bottom end of the third-stage upright column 30.

[0045] In this embodiment, the first-level column 10 is arranged at the bottommost, the second-level column 20 is the middle column, and the third-level column 30 is the highest column. The first-level column 10 can be used to connect to the ground. The second-level column 20 can be respectively connected to the first-level column 10 and the third-level column 30. The third-level column 30 can be used to connect to the tabletop 310 of the operating table 300. The three columns are nested and cooperated, and are driven by a motor and a driving mechanism so that the third-level column 30 can move up and down relative to the first-level column 10, thereby changing the position of the tabletop 310.

[0046] Embodiment Six

[0047] Referring to Figure 1 and Figure 3 On the basis of the above Embodiment Three, the sixth embodiment of the present utility model provides a lifting column assembly 100. Among them, the first-level column 10 includes a first guiding groove 11 arranged in the vertical direction. A first guiding block (not shown in the figure) is formed on the inner wall of the second-level column 20, and at least part of the first guiding block extends into the first guiding groove 11, and the first friction member 41 avoids the first guiding groove 11. The second-level column 20 includes a second guiding groove 21 arranged in the vertical direction. A second guiding block (not shown in the figure) is formed on the inner wall of the third-level column 30, and at least part of the second guiding block extends into the second guiding groove 21, and the third friction member 43 avoids the second guiding groove 21.

[0048] In this way, the cooperation between the first guiding block and the first guiding groove 11 enables the second-level column 20 to move stably relative to the first-level column 10; the cooperation between the second guiding block and the second guiding groove 21 enables the third-level column 30 to move stably relative to the second-level column 20.

[0049] Specifically, the outer wall of the first-level column 10 may include two opposite surfaces, and two first guiding grooves 11 arranged in the vertical direction may be respectively formed on the two surfaces. The inner wall of the second-level column 20 correspondingly forms a first guiding block to assist the lifting movement of the second-level column 20 relative to the first-level column 10. Further, the outer wall of the second-level column 20 may include two opposite surfaces, and two second guiding grooves 21 arranged in the vertical direction may be respectively formed on the two surfaces. The inner wall of the third-level column 30 correspondingly forms a second guiding block to assist the lifting movement of the third-level column 30 relative to the second-level column 20.

[0050] In a specific embodiment, the first friction member 41 on the surface where the first guiding groove 11 is located may be set as two independent friction plates. At the same time, the third friction member 43 on the surface where the second guiding groove 21 is located may be set as two independent friction plates to avoid affecting the guiding groove and the guiding block.

[0051] Embodiment Seven

[0052] Referring to Figure 1, on the basis of the above-mentioned first embodiment, the seventh embodiment of the present utility model provides a lifting column assembly 100. Among them, the lifting column assembly 100 further includes a base 60, and the first-level column 10 is arranged on the base 60.

[0053] In this embodiment, the base 60 can be arranged on the ground, and the first-level column 10 is arranged on the base 60. In this way, the position of the first-level column 10 is fixed and completely restricted, and the subsequent vertical movement of the column assembly can be completed based on the first-level column 10.

[0054] Specifically, the lifting column assembly 100 further includes a shock-absorbing sheet 61. The shock-absorbing sheet 61 is arranged on the base 60 and surrounds the first-level column 10. At the same time, the projections of the second-level column 20 and the third-level column 30 on the base 60 are both located inside the shock-absorbing sheet 61. When the second-level column 20 and the third-level column 30 retract, the shock-absorbing sheet 61 can be used to receive the second-level column 20 and the third-level column 30, avoiding the rigid collision between the second-level column 20 and the third-level column 30 and the base 60, and improving the safety performance of the lifting column assembly 100.

[0055] Embodiment Eight

[0056] Referring to Figure 1 and Figure 4 , the embodiment of the present utility model further provides a lifting column device 200, including a shield assembly 210 and the lifting column assembly 100 in any of the above embodiments. The shield assembly 210 surrounds the lifting column assembly 100, and the lifting column assembly 100 can move along the vertical direction to drive the shield assembly 210 to move along the vertical direction.

[0057] In this way, the shield assembly 210 can be used to protect the lifting column assembly 100, prevent the lifting column assembly 100 from being directly exposed, and avoid the impact and vibration of the lifting column assembly 100 from the outside world.

[0058] Embodiment Nine

[0059] Referring to Figure 1 and Figure 4 , on the basis of the above-mentioned eighth embodiment, the ninth embodiment of the present utility model provides a lifting column device 200. Among them, the lifting column assembly 100 includes a first-level column 10, a second-level column 20, and a third-level column 30 that are sleeved together from bottom to top. The shield assembly 210 includes a first-level housing 211, a second-level housing 212, a third-level housing 213, a fourth-level housing 214, and a fifth-level housing 215 that are sleeved together from bottom to top. The fifth-level housing 215 is fixedly arranged with the third-level column 30.

[0060] In this embodiment, the lifting column assembly 100 in the lifting column device 200 is selected as a lifting column assembly 100 with three levels of components, and the shield assembly 210 is selected as a shield assembly 210 with five levels of components. Additionally, the three-level column 30 at the topmost part is connected to the five-level housing 215. The columns are in a state of internal and external wrapping. At the top of the outer wall of the inner column, a plurality of limit buckles are fixedly connected, and at the bottom of the inner wall of the outer column, a plurality of arc-shaped hooks corresponding to the limit buckles are fixed. When the lifting motor is started, the outer column begins to rise until the arc-shaped hook at the bottom of the outer column engages with the buckle at the top of the middle column, thereby driving the middle column to rise. The shield assembly 210 is positioned and connected to each other through the lower end of each level of housing 211 being closed. When the upper-level housing 211 rises to a certain height, the closed part contacts the upper surface of the lower-level housing 211, completing the connection of two levels while completing the positioning. The lower-level column housing will firmly hold the upper-level housing 211 under the influence of its own gravity, enabling the two to be completely connected and rising in sequence.

[0061] In this embodiment, the outermost and uppermost lifting column assembly 100 is the three-level column 30, and the outermost and topmost shield assembly 210 is the five-level housing 215. Therefore, the three-level column 30 and the five-level housing 215 are connected together, so that in the fully extended state where the stroke of the three-level column 30 reaches the limit, the shield assembly 210 can completely wrap the lifting column assembly 100 to achieve the protection of the lifting column assembly 100.

[0062] Embodiment Ten

[0063] Refer to Figure 5 , this embodiment of the present utility model further provides an operating bed 300, including a tabletop 310 and the lifting column device 200 of any of the above embodiments. The tabletop 310 is arranged above the lifting column device 200, and the lifting column device 200 can drive the tabletop 310 to lift.

[0064] In this embodiment, the entire lifting column device 200 is arranged on the operating bed 300. The lower end of the lifting column device 200 is connected to the base 60 of the operating bed 300, and the upper end of the lifting column device 200 supports the tabletop 310. The height adjustment of the tabletop 310 is the ultimate goal that the lifting column device 200 needs to achieve.

[0065] In the lifting column assembly, lifting column device and operating bed according to the embodiments of the present application, the lifting column assembly includes a primary column, a secondary column, a friction assembly and a setscrew assembly. The secondary column is sleeved on the primary column in a liftable manner. The friction assembly includes a first friction member provided on the outer wall of the primary column and a second friction member provided on the inner wall of the secondary column. When the secondary column rises relative to the primary column to a first predetermined range, the first friction member and the second friction member are in contact with each other. The setscrew assembly is provided on the side of the second friction member away from the first friction member, and the setscrew assembly is used to abut against the second friction member to squeeze the first friction member so as to fix the primary column and the secondary column. In this way, the secondary column is sleeved on the primary column and can move up and down relative to the primary column. After the secondary column moves relative to the primary column to a predetermined position, the first friction member and the second friction member are in contact with each other, so that there is a zero-clearance fit between the primary column and the secondary column, avoiding offset between the primary column and the secondary column. At the same time, tightening the setscrew assembly can make the second friction member continuously abut against the first friction member, thereby limiting the relative position of the primary column and the secondary column and ensuring stable connection between the primary column and the secondary column.

[0066] It can be understood that those skilled in the art can combine various embodiments in the above embodiments under the teaching of the above embodiments to obtain technical solutions of various embodiments.

[0067] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lifting column assembly, characterized in that: include: First level column; A secondary column, wherein the secondary column is liftably mounted on the primary column; The friction assembly comprises a first friction member arranged on the outer wall of the primary column and a second friction member arranged on the inner wall of the secondary column, wherein when the secondary column rises to a first predetermined range relative to the primary column, the first friction member and the second friction member are fitted together; A jackscrew assembly is arranged on a side of the second friction member away from the first friction member, and is used to press the first friction member against the second friction member to fix the primary column and the secondary column.

2. The lifting column assembly according to claim 1, characterized in that: The lifting column assembly further comprises a third-level column, wherein the third-level column is liftably mounted on the second-level column, and the friction assembly further comprises a third friction member disposed on the outer wall of the second-level column and a fourth friction member disposed on the inner wall of the third-level column; When the third-level column rises to a second predetermined range relative to the second-level column, the fourth friction member and the third friction member are fitted together.

3. The lifting column assembly according to claim 2, characterized in that: The top screw assembly further includes a first top screw and a second top screw, wherein the first top screw is arranged on a side of the second friction member away from the first friction member, and the second top screw is arranged on a side of the fourth friction member away from the third friction member; The first top screw is used to press the second friction member against the first friction member to fix the primary column and the secondary column; The second top screw is used to press the fourth friction member against the third friction member to fix the secondary column and the tertiary column.

4. The lifting column assembly according to claim 2, characterized in that: The first friction member is disposed near the top of the primary column, the second friction member is disposed near the bottom of the secondary column, the third friction member is disposed near the top of the secondary column, and the fourth friction member is disposed near the bottom of the tertiary column.

5. The lifting column assembly according to claim 2, characterized in that: The primary column comprises a first guide groove arranged in a vertical direction, a first guide block is formed on the inner wall of the secondary column, the first guide block at least partially extends into the first guide groove, and the first friction member avoids the first guide groove; The secondary column includes a second guide groove arranged along the vertical direction, the inner wall of the tertiary column is formed with a second guide block, the second guide block at least partially extends into the second guide groove, and the third friction member avoids the second guide groove.

6. The lifting column assembly according to claim 1, characterized in that: The lifting column assembly also includes a base, and the primary column is arranged on the base.

7. A lifting column device, characterized in that: include: Shield assembly; and According to any one of claims 1 to 6, the shield assembly is disposed around the lifting column assembly, and the lifting column assembly can move along a vertical direction to drive the shield assembly to move along the vertical direction.

8. The lifting column device according to claim 7, characterized in that: The lifting column assembly includes a primary column, a secondary column and a tertiary column which are sequentially sleeved together from bottom to top; the shield assembly includes a primary cover shell, a secondary cover shell, a tertiary cover shell, a fourth cover shell and a fifth cover shell which are sequentially sleeved together from bottom to top; the fifth cover shell is fixedly arranged on the third column.

9. An operating table, characterized in that: include: mesa; and According to any one of claims 7-8, the table top is arranged above the lifting column device, and the lifting column device can drive the table top to rise and fall.

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