Lifting mechanism and treatment bed

Abstract

The utility model discloses a lifting mechanism and a treatment bed, and belongs to the technical field of medical treatment. The lifting mechanism comprises a base, a first sliding block, a second sliding block, a power rod, a driven rod and a driving assembly. The first end of the power rod is connected with the first sliding block at the first connecting position, the driving adapter is connected with the first sliding block at the second connecting position, and the two connecting positions in the first sliding block are distributed in the sliding direction of the first sliding block relative to the base. Therefore, when the driving adapter transmits the acting force to the second connecting position to drive the first sliding block to slide, the first connecting position in the first sliding block mainly bears the acting force applied by the power rod; the second connecting position in the first sliding block connected with the driving adapter piece basically does not bear large acting force applied by the power rod, it is guaranteed that pressure borne by the driving adapter piece connected with the second connecting position is small, and then it is guaranteed that the driving rod connected with the driving adapter piece does not deform.

Description

Technical Field

[0001] This application relates to the field of medical technology, and particularly to a lifting mechanism and a treatment bed. Background Art

[0002] During the treatment of cancer patients, a radiotherapy bed is used to support the patient. As an important component in the treatment bed, the lifting mechanism realizes the adjustment of the overall height of the treatment bed. For example, the lifting mechanism can lower the overall height of the treatment bed to facilitate the patient's positioning. After the patient lies down on the treatment bed, the doctor operates the lifting mechanism to raise the treatment bed so as to accurately position the patient's lesion at the irradiation center of the radiotherapy equipment for treatment.

[0003] Currently, the treatment bed generally includes: a lifting mechanism, a hinge seat, and a driving mechanism. One end of the lifting mechanism is connected to the output end of the driving mechanism through the hinge seat. The driving mechanism needs to bear the acting forces jointly exerted by the hinge seat, the lifting mechanism, and the load, which easily causes the driving mechanism to deform. Summary of the Utility Model

[0004] Embodiments of this application provide a lifting mechanism and a treatment bed, which can solve the problem that the driving mechanism in the lifting mechanism of the existing technology is prone to deformation when subjected to a large acting force. The technical solutions are as follows:

[0005] On the one hand, a lifting mechanism is provided. The lifting mechanism is used to drive a load to lift, and the lifting mechanism includes: a base, a first slider, a second slider, a power rod, a driven rod, and a driving component;

[0006] The first slider is slidably connected to the base, and the first slider has a first connection position and a second connection position distributed along the direction in which the first slider slides relative to the base;

[0007] The second slider is used to be slidably connected to the load;

[0008] The power rod and the driven rod are cross-distributed, and the power rod and the driven rod are hinged at the cross position. The first end of the power rod is rotatably connected to the first slider at the first connection position, the second end of the power rod is rotatably connected to the load, the first end of the driven rod is rotatably connected to the base, and the second end of the driven rod is rotatably connected to the second slider;

[0009] The driving component includes: a driving rod, and a driving adapter connected to the driving rod in a transmission manner. The driving adapter is fixedly connected to the first slider at the second connection position. The axial direction of the driving rod is parallel to the direction in which the first slider slides relative to the base, and the driving rod is used to drive the driving adapter to move in the axial direction of the driving rod.

[0010] Optionally, the lifting mechanism further includes: a plurality of rotating support components;

[0011] Wherein, both ends of the power rod are respectively rotatably connected to the first connection position and the load through the rotating support components, and both ends of the driven rod are respectively rotatably connected to the base and the second slider through the rotating support components.

[0012] Optionally, the rotating support component includes: a support shaft, a first axial limiting member, and a first rotating member;

[0013] One end of the support shaft is fixedly connected to a first target connecting member, a second target connecting member, the first axial limiting member, and the first rotating member are all sleeved on the support shaft. The first rotating member is distributed on a side of the second target connecting member away from the first target connecting member, the first axial limiting member is distributed on a side of the first rotating member away from the second target connecting member, and the first axial limiting member is tightly connected to the support shaft. Both sides of the first rotating member are respectively abutted against the first axial limiting member and the second target connecting member;

[0014] Wherein, the first target connecting member is connected to any one of the base, the load, the first connection position, and the second slider; the second target connecting member is connected to any one end of the two ends of the power rod and the two ends of the driven rod.

[0015] Optionally, the support shaft includes: a first shaft body fixedly connected to the first target connecting member, and a second shaft body fixedly connected to an end of the first shaft body away from the first target connecting member. The diameter of the first shaft body is greater than the diameter of the second shaft body;

[0016] The second target connecting member includes: a connecting member body sleeved on the first shaft body, and an auxiliary connecting member sleeved on the second shaft body and fixedly connected to the connecting member body. The connecting member body is connected to any one end of the two ends of the power rod and the two ends of the driven rod;

[0017] Wherein, the first rotating member is sleeved on the second shaft body and abuts against a side of the auxiliary connecting member away from the connecting member body.

[0018] Optionally, the rotating support component further includes: a second rotating member sleeved on the second shaft body. The second rotating member is located between the auxiliary connecting member and the second shaft body, and one side of the second rotating member abuts against an end of the first shaft body away from the first target connecting member.

[0019] Optionally, the first rotating member and the second rotating member both include: two pressing rings arranged opposite to each other in the axial direction of the second shaft body, and a plurality of rolling bodies located between the two pressing rings, and the plurality of rolling bodies are distributed around the circumference of the second shaft body.

[0020] Optionally, the support shaft further comprises: a third shaft body fixedly connected to an end of the second shaft body away from the first shaft body, and a diameter of the third shaft body is smaller than a diameter of the second shaft body;

[0021] There is an annular groove between the third shaft body and the second shaft body, and the first axial limiter is clamped in the annular groove.

[0022] Optionally, the rotation support assembly includes: a second axial limiter threadedly connected to the third shaft, the second axial limiter abutting against a side of the first axial limiter facing away from the first rotation member.

[0023] Optionally, the first sliding block includes: a fixing member, and a first sliding part and a second sliding part separately arranged on the base, the first sliding part has the first connecting position, the second sliding part has the second connecting position, and the fixing member is fixedly connected to the first sliding part and the second sliding part respectively.

[0024] Optionally, the fixing member includes: a fixing member body fixedly connected to the first sliding part and the second sliding part, and a positioning protrusion extending toward a side of the base relative to the fixing member body, the positioning protrusion being arranged between the first sliding part and the second sliding part and contacting the first sliding part and the second sliding part respectively.

[0025] On the other hand, a treatment bed is provided, comprising: any one of the lifting mechanisms given above.

[0026] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0027] A lifting mechanism may include: a base, a first slider, a second slider, a power rod, a driven rod, and a driving assembly. Since the first end of the power rod is rotatably connected to the first slider at a first connection position, and the driving adapter is fixedly connected to the first slider at a second connection position, and the first connection position and the second connection position in the first slider are distributed along the sliding direction of the first slider relative to the base. Therefore, while the driving adapter transmits the acting force to the second connection position in the first slider to drive the first slider to slide, the first connection position in the first slider mainly bears the acting force applied by the power rod (for example, the gravitational force of the load borne by the power rod), and the second connection position in the first slider connected to the driving adapter basically does not bear the large acting force applied by the power rod, ensuring that the driving adapter connected to the second connection position in the first slider is subjected to a small pressure, and further ensuring that the driving rod in transmission connection with the driving adapter will not be deformed due to bearing a large force, ensuring the stability of the operation of the lifting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 It is a schematic structural diagram of a treatment bed provided by an embodiment of the present application;

[0030] Figure 2 is Figure 1 an exploded view at A;

[0031] Figure 3 It is a front view of a lifting mechanism provided by an embodiment of the present application;

[0032] Figure 4 It is an exploded view of a partial structure of the lifting mechanism provided by an embodiment of the present application;

[0033] Figure 5 is Figure 3 a cross-sectional view taken along B-B';

[0034] Figure 6 is Figure 3 a cross-sectional view taken along C-C';

[0035] Figure 7 It is an exploded view of a partial structure of a lifting mechanism provided by an embodiment of the present application;

[0036] Figure 8An exploded schematic view of a fixing member, a rotating adapter, and a driving adapter provided by an embodiment of the present application;

[0037] Figure 9 It is an exploded partial structure schematic view of another lifting mechanism provided by an embodiment of the present application.

[0038] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and more detailed descriptions will be given later. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed Embodiments

[0039] To make the objectives, technical solutions, and advantages of the present application clearer, the embodiments of the present application will be described in further detail below in conjunction with the drawings.

[0040] Please refer to Figure 1 and Figure 2 , Figure 1 which is a structural schematic view of a lifting mechanism provided by an embodiment of the present application, Figure 2 is Figure 1 an exploded schematic view at A. This lifting mechanism can be installed on a treatment bed to drive a load to lift, so as to adapt to different treatment heights of radiotherapy equipment.

[0041] The lifting mechanism may include: a base 100, a first slider 200, a second slider 300, a power rod 400, a driven rod 500, and a driving assembly 600.

[0042] The first slider 200 in the lifting mechanism can be slidably connected to the base 100, and the first slider 200 may have a first connection position W1 and a second connection position W2 distributed along the direction in which the first slider 200 slides relative to the base 100.

[0043] The second slider 300 in the lifting mechanism can be used to be slidably connected to the load 001. Here, the sliding directions of the first slider 200 and the second slider 300 may be parallel.

[0044] The power rod 400 and the driven rod 500 in the lifting mechanism may be cross-distributed, the power rod 400 and the driven rod 500 may be hinged at the cross position, the first end of the power rod 400 may be rotatably connected to the first slider 200 at the first connection position W1, the second end of the power rod 400 may be rotatably connected to the load 001; the first end of the driven rod 500 may be rotatably connected to the base 100, and the second end of the driven rod 500 may be rotatably connected to the second slider 300.

[0045] The driving assembly 600 in the lifting mechanism may include: a driving rod 601, and a driving adapter 602 that is transmission-connected to the driving rod 601, the driving adapter 602 may be fixedly connected to the first slider 200 at the second connection position W2, the axial direction of the driving rod 601 may be parallel to the sliding direction of the first slider 200 relative to the base 100, and the driving rod 601 may be used to drive the driving adapter 602 to move in the axial direction of the driving rod 601.

[0046] For example, the driving rod 601 in the driving assembly 600 of the lifting mechanism can drive the driving adapter 602 to move in the axial direction of the driving rod 601, so that the driving adapter 602 can drive the first slider 200 to slide relative to the base 100, and then drive the two ends of the power rod 400 to rotate relative to the first slider 200 and the load 001 through the first slider 200; at the same time, the first end of the driven rod 500 is driven to rotate relative to the base 100, and the second end of the driven rod 500 can also rotate relative to the second slider 300 during the sliding process on the load 001 with the second slider 300. In this way, the load 001 can be driven to switch between the rising state and the falling state through the lifting mechanism. When the lifting mechanism supports the load 001 in a low position, it is convenient for the patient to be in place; when the lifting mechanism supports the load 001 to rise to a certain height, it is convenient for the patient to use the radiotherapy equipment for treatment or the imaging equipment for imaging.

[0047] In the embodiments of the present application, through the cross - cooperation of the power rod 400 and the driven rod 500, both ends of the power rod 400 are respectively connected to the first slider 200 and the load 001, both ends of the driven rod 500 are respectively connected to the second slider 300 and the base 100, and the first slider 200 and the second slider 300 can be respectively slidably connected to the base 100 and the load 001. In this way, during the process that the driving rod 601 drives the driving adapter 602 connected to the first slider 200 to move in the axial direction of the driving rod 601, the cooperation of the power rod 400, the driven rod 500, the first slider 200, the second slider 300 and the base 100 can drive the load 001 to move upward or downward. In addition, since the first end of the power rod 400 is rotatably connected to the first slider 200 at the first connection position W1, and the driving adapter 602 is fixedly connected to the first slider 200 at the second connection position W2, and the first connection position W1 and the second connection position W2 in the first slider 200 are distributed along the sliding direction of the first slider relative to the base 100. Therefore, while the driving adapter 602 transmits the acting force to the second connection position W2 in the first slider 200 to drive the first slider 200 to slide, the first connection position W1 in the first slider 200 mainly bears the acting force applied by the power rod 400 (for example, the gravity of the load borne by the power rod), and the second connection position W2 in the first slider 200 connected to the driving adapter 602 basically does not bear the large acting force applied by the power rod 400, ensuring that the driving adapter 602 connected to the second connection position W2 in the first slider 200 is under less pressure, and further ensuring that the driving rod 601 in transmission connection with the driving adapter 602 will not be deformed due to bearing a large force, thus ensuring the stability of the operation of the lifting mechanism.

[0048] In summary, the embodiments of the present application provide a lifting mechanism, which may include: a base, a first slider, a second slider, a power rod, a driven rod and a driving assembly. Since the first end of the power rod is rotatably connected to the first slider at the first connection position, and the driving adapter is fixedly connected to the first slider at the second connection position, and the first connection position and the second connection position in the first slider are distributed along the sliding direction of the first slider relative to the base. Therefore, while the driving adapter transmits the acting force to the second connection position in the first slider to drive the first slider to slide, the first connection position in the first slider mainly bears the acting force applied by the power rod (for example, the gravity of the load borne by the power rod), and the second connection position in the first slider connected to the driving adapter basically does not bear the large acting force applied by the power rod, ensuring that the driving adapter connected to the second connection position in the first slider is under less pressure, and further ensuring that the driving rod in transmission connection with the driving adapter will not be deformed due to bearing a large force, thus ensuring the stability of the operation of the lifting mechanism.

[0049] Optionally, as Figure 1 shown, the number of driving rods 400 in the lifting mechanism can be two, and the number of driven rods 500 in the lifting mechanism can also be two. The two driving rods 400 can be arranged oppositely, and the two driven rods 500 can also be arranged oppositely. Among them, one driving rod 400 and one driven rod 500 on the same side can be arranged in a cross pattern, and the driving rod 400 and the driven rod 500 can be hinged at the cross position. It should be noted that when the number of both the driving rod 400 and the driven rod 500 is two, the number of the first sliders 200 and the second sliders 300 in the lifting mechanism can both be two. The two first sliders 200 can be distributed on both sides of the base 100, and the two second sliders 300 can be distributed on both sides of the load 001. In this way, a set of driving rod 400 and driven rod 500 can be connected and cooperated with a corresponding set of first slider 200 and second slider 300.

[0050] In the embodiment of the present application, please refer to Figure 3 , Figure 3 which is the front view of a lifting mechanism provided by the embodiment of the present application. The lifting mechanism may further include: a plurality of rotating support components 700. Among them, both ends of the driving rod 400 can be rotatably connected to the first connection position W1 in the first slider 200 and the load 001 respectively through two rotating support components 700. Both ends of the driven rod 500 can be rotatably connected to the base 100 and the second slider 300 respectively through two rotating support components. In this case, by setting the rotating support components 700, both ends of the driving rod 400 can be rotatably connected to the first connection position W1 in the first slider 200 and the load 001 respectively through two rotating support components 700, realizing the lifting movement of the lifting mechanism, and thus effectively ensuring the connection stability between the driving rod 400 and the first connection position W1 in the first slider 200 and the load 001. In addition, by setting the rotating support components 700, both ends of the driven rod 500 can be rotatably connected to the base 100 and the second slider 300 respectively through two rotating support components 700, realizing the lifting movement of the lifting mechanism, and thus effectively ensuring the connection stability between the driven rod 500 and the base 100 and the second slider 300.

[0051] In the embodiment of the present application, please refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 , Figure 4 which is the partial structural explosion diagram of the lifting mechanism provided by the embodiment of the present application, Figure 5 is Figure 3 the cross-sectional view at B - B', Figure 6 is Figure 3Cross-sectional view at C-C'. The rotating support assembly 700 may include: a support shaft 701, a first axial stopper 702 and a first rotating member 703. One end of the support shaft 701 may be fixedly connected to the first target connection member C1, the second target connection member C2, the first axial stopper 702 and the first rotating member 703 may all be sleeved on the support shaft 701, and the first rotating member 703 may be distributed on the side of the second target connection member C2 away from the first target connection member C1. The first axial stopper 702 may be distributed on the side of the first rotating member 703 away from the second target connection member C2, and the first axial stopper 702 may be tightly connected to the support shaft 701, and the two sides of the first rotating member 703 may be respectively abutted against the first axial stopper 702 and the second target connection member C2. Among them, the first target connection member C1 may be connected to any one of the base 100, the load 001, the first connection position W1 in the first slider 200 and the second slider 300. The second target link C2 may be connected to any one of both ends of the power rod 400 and both ends of the driven rod 500 .

[0052] In this case, by fixing one end of the support shaft 701 in the rotating support assembly 700 on the first target connection member C1, the second target connection member C2, the first axial limit member 702 and the first rotating member 703 are all sleeved on the support shaft 701, and the two sides of the first rotating member 703 are respectively in contact with the first axial limit member 702 and the second target connection member C2. In this way, while the second target connection member C2 is axially limited by the first rotating member 703 and the first axial limit member 702, it is possible to ensure that the second target connection member C2 rotates smoothly around the support shaft 701, thereby ensuring the stable operation of the lifting mechanism during the lifting process, so that the power rod 400 and the driven rod 500 in the lifting mechanism will basically not move randomly in the axial direction of the support shaft 701. It should be noted that in a possible implementation, the first target connection member C1 can be any one of the base 100, the load 001, the first connection position W1 in the first slider 200 and the second slider 300. Or, as Figure 3 , Figure 4 and Figure 5As shown, the first target connecting member C1 connected to the base 100 may be the first target connecting member C11. The first target connecting member C11 may be an annular kit connected to the end of the support shaft 701. The end of the annular kit facing away from the support shaft 701 may be fixedly connected to the base 100. The first target connecting member C1 connected to the load 001 may also be an annular kit connected to the end of the support shaft 701. The end of the annular kit facing away from the support shaft may be fixedly connected to the load 001. The first target connecting member C1 connected to the first connection position W1 of the first slider 200 may be a rotating adapter connected to the first connection position W1 of the first slider 200. By way of example, the rotating adapter may be in an "L" shape. The first target connecting member C1 connected to the second slider 300 may be the first target connecting member C12. By way of example, the first target connecting member C12 may be in an "L" shape. The second target connecting member C2 and the power rod 400 connected to the second target connecting member C2 may be an integral structure. The second target connecting member C2 and the driven rod 500 connected to the second target connecting member C2 may also be an integral structure.

[0053] Optionally, as Figure 5 and Figure 6 shown, the support shaft 701 in the rotating support assembly 700 may include: a first shaft body 701a fixedly connected to the first target connecting member C1, and a second shaft body 701b fixedly connected to one end of the first shaft body 701a facing away from the first target connecting member C1. The diameter of the first shaft body 701a may be greater than the diameter of the second shaft body 701b, and the axis line of the first shaft body 701a may coincide with the axis line of the second shaft body 701b. The second target connecting member C2 may include: a connecting member body C21 sleeved on the first shaft body 701a, and an auxiliary connecting member C22 sleeved on the second shaft body 701b and fixedly connected to the connecting member body C21. The connecting member body C21 may be connected to any one of the two ends of the power rod 400 and the two ends of the driven rod 500. Among them, the first rotating member 703 may be sleeved on the second shaft body 701b, and the first rotating member 703 may abut against the side of the auxiliary connecting member C22 facing away from the connecting member body C21.

[0054] In this case, the first shaft body 701a and the second shaft body 701b in the support shaft 701 can form a stepped shaft, by sleeve-mounting the connector body C21 in the second target connector C2 on the first shaft body 701a, and the auxiliary connector C22 sleeve-mounted on the second shaft body 701b and abutting against the first rotating member 703 sleeved on the second shaft body 701b. In this way, the stepped shaft and the first rotating member 703 can ensure that the second target connector C2 rotates around the support shaft 701 while achieving axial limitation. In the present application, the rotation support assembly 700 may also include: a bushing 704 located between the connector body C21 and the first shaft body 701a, the bushing 704 may be tightly matched with the connector body C21, and the connector body C21 may be rotatably connected to the first shaft body 701a through the bushing 704. It should be noted that the bushing 704 may be made of a wear-reducing and wear-resistant material.

[0055] In the embodiments of the present application, Figure 5 and Figure 6 As shown, the rotation support assembly 700 may also include: a second rotating member 705 sleeved on the second shaft body 701b, the second rotating member 705 may be located between the auxiliary connecting member C22 and the second shaft body 701b, and one side of the second rotating member 705 may abut against the end of the first shaft body 701a away from the first target connecting member C1. In the present application, by arranging the second rotating member 705 between the auxiliary connecting member C22 and the second shaft body, one side of the second rotating member 705 may abut against the end face of the stepped shaft, and the other side of the second rotating member 705 may abut against the auxiliary connecting member C22. In this way, it can be further ensured that the auxiliary connecting member C22 and the connecting member body C21 rotate together around the support shaft 701 while achieving axial limitation.

[0056] In this application, if Figure 5 and Figure 6 As shown, the first rotating member 703 and the second rotating member 705 may each include: two pressing rings D1 arranged opposite to each other in the axial direction of the second shaft body 701b, and a plurality of rolling bodies D2 located between the two pressing rings D1, and the plurality of rolling bodies D2 may be distributed circumferentially around the second shaft body 701b. For example, the first rotating member 703 and the second rotating member 705 may both be thrust ball bearings, which may withstand the forces of other components in the axial direction of the support shaft 701.

[0057] Optional, such as Figure 5 and Figure 6As shown, the support shaft 701 in the rotation support assembly 700 may also include: a third shaft 701c fixedly connected to one end of the second shaft 701b away from the first shaft 701a, the diameter of the third shaft 701c may be smaller than the diameter of the second shaft 701b, and the axis of the third shaft 701c may coincide with the axis of the second shaft 701b. Wherein, an annular groove k1 may be provided between the third shaft 701c and the second shaft 701b, and the first axial stopper 702 is clamped in the annular groove k1. For example, the first axial stopper 702 may be an elastic clamping ring, which is clamped in the annular groove k1 between the third shaft 701c and the second shaft 701b through its own elastic deformation.

[0058] In the embodiments of the present application, Figure 5 and Figure 6 As shown, the rotation support assembly 700 may further include: a second axial stopper 706 threadedly connected to the third shaft body 701c, and the second axial stopper 706 may abut against a side of the first axial stopper 702 away from the first rotating member 703. For example, the end of the third shaft body 701c may have an external thread, and the second axial stopper 706 may be a nut, which is threadedly connected to the external thread on the third shaft body through an internal thread, so as to axially stop the multiple components sleeved on the support shaft 701 as a whole.

[0059] Optional, please refer to Figure 7 , Figure 7It is a partial structural explosion diagram of a lifting mechanism provided by an embodiment of the present application. The first slider 200 of the lifting mechanism may include: a fixing member 203, and a first sliding part 201 and a second sliding part 202 separately arranged on the base 100. The first sliding part 201 may have a first connection position W1, and the second sliding part may have a second connection position W2. The fixing member 203 may be fixedly connected to the first sliding part 201 and the second sliding part 202 respectively. In this case, by separately arranging the first sliding part 201 and the second sliding part 202 in the first slider 200 on the base 100 and connecting the first sliding part 201 and the second sliding part 202 through the fixing member 203, thus, the path for the force borne by the first sliding part 201 to be transmitted to the second sliding part 202 is increased, that is, the force borne by the first sliding part 201 needs to pass through the fixing member 203 before being transmitted to the second sliding part 202, further reducing the pressure borne by the second sliding part 202, ensuring that the driving adapter 602 fixedly connected to the second sliding part 202 bears less pressure, and further ensuring the use reliability of the driving rod 601 drivingly connected to the driving adapter 602. It should be noted that, in a possible implementation manner, the first sliding part 201 and the second sliding part 202 in the first slider 200 may be fixedly connected, that is, the first sliding part 201 and the second sliding part 202 may be an integral structure, and at this time, there may be no need to provide a fixing member 203 to connect the first sliding part 201 and the second sliding part 202.

[0060] Optionally, as Figure 7 shown, the driving rod 601 in the driving assembly 600 may be a lead screw, the driving adapter 602 may be sleeved on the driving rod 601, and the part of the driving adapter 602 sleeved on the lead screw may have a thread matching the lead screw. The driving assembly 600 in the lifting mechanism may further include: a driving motor 603, and the output shaft of the driving motor 603 may be connected to one end of the driving rod. Among them, the driving motor 603 may be configured to: drive the driving adapter 602 to move axially along the driving rod 601 during the process of controlling the driving rod 601 to rotate. It should be noted that, in other possible implementation manners, the driving rod 601 in the driving assembly 600 may be a hydraulic rod or a cylinder rod. The hydraulic rod may realize telescopic movement through cooperation with a hydraulic device, and the cylinder rod may realize telescopic movement through cooperation with a cylinder device.

[0061] In this application, the fixing member 203 may include: a fixing member body 203a fixedly connected to the first sliding portion 201 and the second sliding portion 202, and a positioning projection 203b extending toward the base 100 with respect to the fixing member body 203a. The positioning projection 203b is disposed between the first sliding portion 201 and the second sliding portion 202 and is in contact with the first sliding portion 201 and the second sliding portion 202 respectively. In this way, by the positioning projection 203b disposed on the side of the fixing member body 203a facing the base 100 and being in contact with the first sliding portion 201 and the second sliding portion 202 respectively, the relative connection positions of the fixing member body 203a with the first sliding portion 201 and the second sliding portion 202 can be ensured after contact, improving the convenience of component assembly.

[0062] In an embodiment of this application, as Figure 7 shown, the first slider 200 in the lifting mechanism may further include: a rotating adapter 204, which can be fixedly connected to the first sliding portion 201 in the first slider 200 (for example: the rotating adapter 204 can be lapped on the first sliding portion 201 and fixedly connected to the first slider 200), and can be rotatably connected to the rotating support assembly 700 (for example: the support shaft 701) at the first end of the power rod 400. Wherein, a part of the fixing member 203 may be located on the side of the rotating adapter 204 facing away from the first sliding portion 201, another part of the fixing member 203 may be located on the side of the driving adapter 602 facing away from the second sliding portion 202, and the fixing member 203 can be fixedly connected to the rotating adapter 204 and the driving adapter 602 respectively. Here, in other possible implementation manners, please refer to Figure 8 , Figure 8 is an exploded schematic diagram of a fixing member, a rotating adapter and a driving adapter provided by an embodiment of this application. The fixing member body 203a in the fixing member 203 can be fixedly connected to the rotating adapter 204 and the driving adapter 602 respectively, and the positioning projection 203b disposed on the side of the fixing member body 203a facing the base 100 can be located between the rotating adapter 204 and the driving adapter 602 and is in contact with the rotating adapter 204 and the driving adapter 602 respectively. In this way, during the process of assembling the rotating adapter 204 and the driving adapter 602 onto the fixing member body 203a, the positioning of the rotating adapter 204 and the driving adapter 602 with respect to the fixing member body 203a can be achieved through the positioning projection 203b, ensuring the installation accuracy of the fixing member 203 with the rotating adapter 204 and the driving adapter 602, and further ensuring the accuracy and stability of the operation of the lifting mechanism.

[0063] It should be noted that when the first slider 200 includes a first sliding portion 201 and a second sliding portion 202, one end of the power rod 400 can be rotatably connected to the first sliding portion 201 through a rotating support assembly 700. And in the case where a rotating adapter 204 is provided, the first target connector C1 connected to the first connection position W1 can be the rotating adapter 204.

[0064] For example, please refer to Figure 9 , Figure 9 is a partial structural explosion diagram of another lifting mechanism provided by an embodiment of the present application. The lifting mechanism may further include: a plurality of first screws A1 and a plurality of second screws A2. The plurality of first screws A1 can be used to fixedly connect the rotating adapter 204 and the first sliding portion 201 of the first slider 200. The plurality of second screws A2 can be used to fixedly connect a part of the fixing member 203 and the rotating adapter 204. The lifting mechanism may further include: a plurality of third screws B1 and a plurality of fourth screws B2. The plurality of third screws B1 can be used to fixedly connect the driving adapter 602 and the second sliding portion 202 of the first slider 200. The plurality of fourth screws B2 can be used to fixedly connect another part of the fixing member 203 and the driving adapter 602.

[0065] In the present application, as Figure 9 shown, the base 100 may have a first linear guide rail 101 corresponding to the first slider 200. The first slider 200 can be arranged on the first linear guide rail 101 and can slide relative to the first linear guide rail 101. The extending direction of the first linear guide rail 101 can be parallel to the sliding direction of the first slider 200. It should be noted that the length of the first linear guide rail 101 can be set according to the actual sliding distance of the first slider 200, and the embodiment of the present application does not make specific limitations in this regard. Here, the load 001 may have a second linear guide rail (not shown in the figure) corresponding to the second slider 300. The second slider 300 can be sleeved on the second linear guide rail and can slide relative to the second linear guide rail. The extending direction of the second linear guide rail can be parallel to the sliding direction of the second slider 300.

[0066] In summary, the embodiment of the present application provides a lifting mechanism, which may include: a base, a first slider, a second slider, a power rod, a driven rod, and a driving assembly. Since the first end of the power rod is rotatably connected to the first slider at the first connection position, and the driving adapter is fixedly connected to the first slider at the second connection position, and the first connection position and the second connection position in the first slider are distributed along the sliding direction of the first slider relative to the base. Therefore, while the driving adapter transmits the acting force to the second connection position in the first slider to drive the first slider to slide, the first connection position in the first slider mainly bears the acting force applied by the power rod (for example, the gravity of the load borne by the power rod), and the second connection position in the first slider connected to the driving adapter basically does not bear the large acting force applied by the power rod, ensuring that the driving adapter connected to the second connection position in the first slider is subjected to less pressure, and further ensuring that the driving rod in transmission connection with the driving adapter will not be deformed due to bearing a large force, thus ensuring the stability of the operation of the lifting mechanism.

[0067] The embodiment of the present application also provides a treatment bed, which may include the lifting mechanism given in any of the above. In the present application, the treatment bed may further include: a load 001, the load 001 may be rotatably connected to the power rod 400 in the lifting mechanism, and may be slidably connected to the second slider 300 in the lifting mechanism, and the second slider 300 may be rotatably connected to one end of the driven rod 500. In this way, the cooperation of the driving assembly 600, the first slider 200, the second slider 300, the power rod 400, and the driven rod 500 can be used to control the load 001 to rise or fall. By way of example, the load may be a bed body for carrying a patient.

[0068] The embodiment of the present application also provides a medical system, which may include: a medical device, and a treatment bed cooperatively connected to the medical device. By way of example, the medical device may include: a radiotherapy device or an imaging positioning device.

[0069] In the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. The term "plurality" means two or more, unless otherwise clearly defined.

[0070] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A lifting mechanism, characterized in that, The lifting mechanism is used to drive the load to lift, and the lifting mechanism comprises: a base (100), a first slider (200), a second slider (300), a power rod (400), a driven rod (500) and a driving assembly (600); The first slider (200) is slidably connected to the base (100), and the first slider (200) has a first connection position (W1) and a second connection position (W2) distributed along a direction in which the first slider (200) slides relative to the base (100); The second sliding block (300) is used for sliding connection with the load (001); The power rod (400) and the driven rod (500) are cross-distributed, the power rod (400) and the driven rod (500) are hinged at the cross position, the first end of the power rod (400) is rotationally connected to the first slider (200) at the first connection position (W1), the second end of the power rod (400) is rotationally connected to the load (001), the first end of the driven rod (500) is rotationally connected to the base (100), and the second end of the driven rod (500) is rotationally connected to the second slider (300); The driving assembly (600) comprises: a driving rod (601), and a driving adapter (602) drivingly connected to the driving rod (601), wherein the driving adapter (602) is fixedly connected to the first slider (200) at the second connecting position (W2), the axial direction of the driving rod (601) is parallel to the sliding direction of the first slider (200) relative to the base (100), and the driving rod (601) is used to drive the driving adapter (602) to move in the axial direction of the driving rod (601).

2. The lifting mechanism according to claim 1, characterized in that, The lifting mechanism further comprises: a plurality of rotation support assemblies (700); Wherein, the two ends of the power rod (400) are rotationally connected to the first connection position (W1) and the load (001) respectively through the rotation support assembly (700), and the two ends of the driven rod (500) are rotationally connected to the base (100) and the second slider (300) respectively through the rotation support assembly (700).

3. The lifting mechanism according to claim 2, characterized in that, The rotating support assembly (700) comprises: a supporting shaft (701), a first axial limiting member (702) and a first rotating member (703); One end of the support shaft (701) is fixedly connected to the first target connecting member (C1). The second target connecting member (C2), the first axial limiting member (702), and the first rotating member (703) are all sleeved on the support shaft (701). The first rotating member (703) is distributed on the side of the second target connecting member (C2) away from the first target connecting member (C1). The first axial limiting member (702) is distributed on the side of the first rotating member (703) away from the second target connecting member (C2), and the first axial limiting member (702) is tightly connected to the support shaft (701). Both sides of the first rotating member (703) are in contact with the first axial limiting member (702) and the second target connecting member (C2) respectively; Among them, the first target connecting member (C1) is connected to any one of the base (100), the load (001), the first connection position (W1), and the second slider (300); the second target connecting member (C2) is connected to any one end of the two ends of the power rod (400) and the two ends of the driven rod (500).

4. The lifting mechanism according to claim 3, characterized in that, The support shaft (701) includes: a first shaft body (701a) fixedly connected to the first target connecting member (C1), and a second shaft body (701b) fixedly connected to one end of the first shaft body (701a) away from the first target connecting member (C1). The diameter of the first shaft body (701a) is greater than the diameter of the second shaft body (701b); The second target connecting member (C2) includes: a connecting member body (C21) sleeved on the first shaft body (701a), and an auxiliary connecting member (C22) sleeved on the second shaft body (701b) and fixedly connected to the connecting member body (C21). The connecting member body (C21) is connected to any one end of the two ends of the power rod (400) and the two ends of the driven rod (500); Among them, the first rotating member (703) is sleeved on the second shaft body (701b) and is in contact with the side of the auxiliary connecting member (C22) away from the connecting member body (C21).

5. The lifting mechanism according to claim 4, characterized in that, The rotating support assembly (700) further includes: a second rotating member (705) sleeved on the second shaft body (701b). The second rotating member (705) is located between the auxiliary connecting member (C22) and the second shaft body (701b), and one side of the second rotating member (705) is in contact with the end of the first shaft body (701a) away from the first target connecting member (C1).

6. The lifting mechanism according to claim 5, characterized in that, Both the first rotating member (703) and the second rotating member (705) include: two retaining rings (D1) oppositely arranged in the axial direction of the second shaft body (701b), and a plurality of rolling elements (D2) located between the two retaining rings (D1). The plurality of rolling elements (D2) are distributed circumferentially around the second shaft body (701b).

7. The lifting mechanism according to claim 4, characterized in that, The support shaft (701) further comprises: a third shaft body (701c) fixedly connected to an end of the second shaft body (701b) away from the first shaft body (701a), wherein the diameter of the third shaft body (701c) is smaller than the diameter of the second shaft body (701b); There is an annular groove (k1) between the third shaft body (701c) and the second shaft body (701b), and the first axial limiting member (702) is clamped in the annular groove (k1).

8. The lifting mechanism according to claim 7, wherein The rotation support assembly (700) comprises: a second axial limit member (706) threadedly connected to the third shaft (701c), the second axial limit member (706) abutting against a side of the first axial limit member (702) facing away from the first rotation member (703).

9. The lifting mechanism according to any one of claims 1-8, characterized in that, The first sliding block (200) comprises: a fixing member (203), and a first sliding part (201) and a second sliding part (202) which are separately arranged on the base (100), the first sliding part (201) having the first connecting position (W1), the second sliding part (202) having the second connecting position (W2), and the fixing member (203) being fixedly connected to the first sliding part (201) and the second sliding part (202), respectively.

10. The lifting mechanism according to claim 9, characterized in that, The fixing member (203) comprises: a fixing member body (203a) fixedly connected to the first sliding part (201) and the second sliding part (202), and a positioning protrusion (203b) extending toward one side of the base (100) relative to the fixing member body (203a), wherein the positioning protrusion (203b) is arranged between the first sliding part (201) and the second sliding part (202), and is in contact with the first sliding part (201) and the second sliding part (202), respectively.

11. A treatment bed, characterized in that, It comprises the lifting mechanism described in any one of claims 1 to 10.

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