Lifting mechanism and movable C-shaped arm X-ray machine

Abstract

The utility model belongs to the technical field of X-ray detection, and particularly relates to a lifting mechanism and a movable C-shaped arm X-ray machine, which comprise a frame assembly, a lifting assembly and a chain wheel assembly, the chain wheel assembly comprises a first chain wheel, a second chain wheel and a chain, the first chain wheel and the second chain wheel are arranged at the positions close to the top and the bottom of the frame assembly respectively, the first chain wheel and the second chain wheel are in transmission connection through the chain, one side of the chain is connected with the lifting assembly, and transmission is achieved through the chain wheel assembly. Compared with a gear or a screw surface thread, the chain has higher strength, under the long-time use condition, especially under the continuous pressure bearing condition, the reliability, stability, control precision, durability and power transmission capacity of the chain are better, and when lifting adjustment is carried out on a movable C-shaped arm or other medical equipment, the chain is not prone to falling off. And the movement adjusting requirements of medical equipment can be better met.

Description

Technical Field

[0001] The utility model belongs to the technical field of X-ray detection, and specifically relates to a lifting mechanism and a mobile C-arm X-ray machine. Background Art

[0002] In a mobile C-arm X-ray machine, when the power source controls the up-and-down sliding of the lifting component, the power source needs to transmit the power to the lifting component through a transmission mechanism, such as converting the rotational power of the motor into the lifting power of the lifting component, to achieve the change of the motion form and the power transmission, etc. The lifting mechanism is used for the lifting adjustment of the mobile C-arm X-ray machine, which is a medical adjustment of medical equipment. Higher requirements are put forward for the overall lifting adjustment accuracy, safety, stability, and reliability of the lifting mechanism.

[0003] In an existing lifting mechanism, a mobile C-arm X-ray machine, and other medical equipment, a screw rod and a gear-rack transmission method are mostly adopted to realize the lifting motion control of the C-arm. However, there are problems such as insufficient performance in terms of reliability, transmission power, and durability of continuous operation.

[0004] Therefore, the utility model provides a lifting mechanism and a mobile C-arm X-ray machine. Summary of the Utility Model

[0005] To overcome the defects in the prior art, the purpose is to provide a lifting mechanism and a mobile C-arm X-ray machine to improve the reliability, transmission ability, and durability of the lifting motion control of the mobile C-arm X-ray machine and other medical equipment.

[0006] The technical solution adopted by the utility model to solve its technical problems and to achieve the purpose of overcoming the above technical problems is as follows: A lifting mechanism according to the utility model includes: a frame assembly; a lifting assembly, the lifting assembly is slidably connected to the frame assembly; a sprocket assembly, including a first sprocket, a second sprocket, and a chain. The first sprocket and the second sprocket are respectively arranged at positions close to the top and bottom of the frame assembly. The first sprocket and the second sprocket are connected by chain drive. One side of the chain is connected to the lifting assembly, and is adapted to control the rotation of the first sprocket and / or the second sprocket through a power source so that the chain drives the lifting assembly to perform a lifting motion.

[0007] In some embodiments, a buffer assembly is provided between the lifting assembly and the frame assembly; the buffer assembly can be a gas spring assembly.

[0008] In some embodiments, a lifting groove is provided along the longitudinal direction in the middle of the frame component. The lifting component is arranged inside the lifting groove. An installation hole is formed in the middle of the lifting component, and the gas spring component is arranged in the installation hole. The bottom of the gas spring component is installed on the bottom of the lifting groove, and the top of the gas spring component is installed at a position close to the top of the lifting component or the top of the gas spring component is installed at a position close to the top of the lifting component through a yaw pulley component.

[0009] In some embodiments, when the top of the gas spring component is installed at a position close to the top of the lifting component through a yaw pulley component, the yaw pulley component is arranged at the top of the lifting component, and the bottom end of the yaw pulley component extends into the interior of the installation hole and is connected to the inner wall of the installation hole. The gas spring component includes a gas spring body, a first joint, a first pin shaft, a first mounting seat, a second joint, a second pin shaft and a second mounting seat. The bottom of the lifting groove is connected to the first mounting seat, and the bottom surface of the yaw pulley component is connected to the second mounting seat. The two ends of the gas spring body are respectively connected to the first joint and the second joint. The first joint is connected to the first mounting seat through the first pin shaft, and the second joint is connected to the second mounting seat through the second pin shaft.

[0010] In some embodiments, the first sprocket includes a driven wheel bracket, a first driven sprocket and an auxiliary plate. The first driven sprocket is rotatably connected to the driven wheel bracket, and the driven wheel bracket is arranged on the frame component through the auxiliary plate. The second sprocket includes a second driven sprocket, a sprocket bracket, a transmission shaft and a synchronous pulley. The sprocket bracket is arranged on the frame component. The transmission shaft is rotatably connected to the sprocket bracket. The second driven sprocket and the synchronous pulley are connected to the transmission shaft. The synchronous pulley is externally connected to a motor. The first driven sprocket and the second driven sprocket are connected by chain drive. An encoder is provided on the driven wheel bracket, and the encoder is used to calculate the lifting distance of the chain driving the lifting component.

[0011] In some embodiments, a connecting block is provided on the side of the lifting component. The connecting block connects the chain and the lifting component. The connecting block has a first connection end and a second connection end. The first connection end is hinged to one end of the chain. The other end of the chain passes through the first driven sprocket and the second driven sprocket in sequence and is hinged to the second connection end. Both the first driven sprocket and the second driven sprocket are engaged with the chain and surrounded by the chain.

[0012] In some embodiments, a trigger member is provided on the connecting block, and a trigger switch is provided on the frame assembly near the top and bottom of the frame assembly, so that when the chain drives the lifting assembly to rise or descend to a preset position, the trigger member squeezes the trigger switch to stop the lifting assembly from moving in a direction beyond a preset moving range; the trigger member has a preset length dimension along the movement direction of the lifting assembly, and the trigger member has a bending portion at the two side edge positions in the movement direction of the lifting assembly that is away from the direction of the trigger switch.

[0013] In some embodiments, a mechanical contact is provided on the trigger switch, and the mechanical contact includes a connecting portion, an extending portion and a triggering portion; the connecting portion is connected to the trigger switch through the extending portion and the connecting portion, the lifting assembly moves to the edge of the stroke and squeezes the triggering portion through the triggering member, so that the triggering portion moves and triggers the trigger switch, and outputs a trigger signal to stop the lifting assembly from continuing to move in a direction beyond the preset moving range; the connecting portion is connected to a side surface of the trigger switch facing the triggering member, the proximal end of the extending portion is connected to an end of the connecting portion away from the trigger switch, the distal ends of the two extending portions extend toward opposite sides of the two trigger switches respectively, and the distal ends of the extending portions are inclined to extend away from the corresponding trigger switch, the triggering portion is connected to the distal end of the extending portion in a direction toward the triggering member, and the triggering portion corresponds to the triggering point on the corresponding trigger switch, so that the triggering portion is squeezed by the triggering member and the triggering portion triggers the triggering point of the trigger switch through the deformation of the extending portion.

[0014] In some embodiments, a first gap is left between the lifting assembly and the frame assembly, a guide rail is provided on one side of the lifting assembly in the first gap to enable the lifting assembly and the frame assembly to be slidably connected, a roller and a guide are provided on the other side of the lifting assembly in the first gap, and when the lifting assembly is lifted or lowered, the roller is rollingly connected to the guide; the guide rail includes a slide rail and a slider, the slider is arranged on one side of the lifting assembly near the bottom position of the lifting assembly, the slide rail is arranged on the frame assembly relative to the position of the slider, and the slider is slidably connected to the slide rail, the roller is arranged on the other side of the lifting assembly near the bottom position of the lifting assembly, the guide is arranged on the frame assembly relative to the position of the slider, and the roller is rollingly connected to the guide.

[0015] In some embodiments, a first cushion block is provided at the bottom of the frame component. The first cushion block is made of an elastic material and is adapted to buffer and limit the lifting component at or beyond the edge of the preset moving stroke at the bottom. A limiting block is provided near the bottom position on the side of the lifting component. A second cushion block is provided at the top of the frame component relative to the position of the limiting block. The second cushion block is made of an elastic material and is adapted to buffer and limit the lifting component at or beyond the edge of the preset moving stroke at the top.

[0016] The mobile C-arm X-ray machine adopts the above-mentioned lifting mechanism and further includes a frame component, a cross-arm component, a C-ring component, and a display component 820. The lifting mechanism is arranged in the frame component. The cross-arm component is arranged at the top of the lifting mechanism. The display component is arranged on the cross-arm component. The C-ring component is arranged on one side of the cross-arm component. A flat panel component and a tube component are arranged on the C-ring component, and the flat panel component and the tube component correspond to each other.

[0017] Compared with the prior art, the lifting mechanism and the mobile C-arm X-ray machine provided by the present utility model have the following beneficial effects:

[0018] 1. The present utility model provides a lifting mechanism and a mobile C-arm X-ray machine. By providing a sprocket assembly including a first sprocket, a second sprocket, and a chain, through the transmission of the sprocket assembly, the chain has stronger strength compared to the surface thread of a gear or a screw. Under long-term use conditions, especially under continuous pressure-bearing conditions, the reliability, stability, control accuracy, durability, and power transmission ability of the chain are all more excellent. When lifting and adjusting the mobile C-arm, it can meet the movement adjustment requirements of medical equipment.

[0019] 2. The present utility model provides a lifting mechanism and a mobile C-arm X-ray machine. By providing a gas spring assembly, the gas spring assembly is mainly a device that provides elastic force or supporting force through gas pressure, which can more effectively share the transmission pressure of the sprocket assembly, and the gas spring assembly can provide a longer movement stroke to meet the long-distance lifting requirements of the lifting component.

[0020] 3. The present utility model provides a lifting mechanism and a mobile C-arm X-ray machine. By providing a trigger member and a trigger switch, the trigger member has a preset length dimension along the longitudinal direction, so that when the trigger member contacts the trigger switch, there is a certain trigger response time. Even in the case of trigger failure, the trigger member can continue to move, realizing the protection of the trigger switch. At the same time, bending portions are provided at the top and bottom positions of the trigger switch, effectively avoiding the sudden contact between the trigger member and the trigger switch, resulting in damage to the trigger switch.

[0021] 4. The present utility model provides a lifting mechanism and a mobile C-arm X-ray machine. A mechanical contact is provided on the trigger switch. The mechanical contact includes a connecting portion, an extending portion, and a triggering portion. The position of the triggering portion is changed by the deformation mode of the extending portion. After the triggering portion stops being squeezed, under the action of the resilience of the extending portion, the triggering portion will automatically reset. And through the extending inclination direction of the extending portion, the overall triggering movement direction of the trigger member maintains a small included angle with the extending direction of the extending portion. As the trigger member continues to move downward, it will more smoothly squeeze the triggering portion and reduce the long-term repeated extrusion damage to the extending portion. Description of the Drawings

[0022] The present utility model will be further described below in conjunction with the drawings:

[0023] Figure 1 is a perspective view of the lifting mechanism in an embodiment of the present utility model;

[0024] Figure 2 is a sectional view of the lifting mechanism in an embodiment of the present utility model;

[0025] Figure 3 is a schematic diagram of the internal structure in the lifting mechanism in an embodiment of the present utility model;

[0026] Figure 4 is a front view of the lifting mechanism in an embodiment of the present utility model;

[0027] Figure 5 is Figure 4 a partial enlarged view of part A in

[0028] Figure 6 is Figure 4 a partial enlarged view of part B in

[0029] Figure 7 is Figure 3 a partial enlarged view of part C in

[0030] Figure 8 is a perspective view of the mobile C-arm X-ray machine in an embodiment of the present utility model.

[0031] In the figure: frame assembly 100, lifting groove 110, first gap 120, roller 130, guide member 140, guide rail 150, slide rail 151, slider 152, first cushion block 160, limit block 170, second cushion block 180.

[0032] Lifting assembly 200, mounting hole 210,

[0033] Sprocket assembly 300, first sprocket 310, driven wheel bracket 311, encoder 3111, first driven sprocket 312, auxiliary plate 313, second sprocket 320, second driven sprocket 321, sprocket bracket 322, transmission shaft 323, synchronous pulley 324, chain 330,

[0034] Gas spring assembly 400, gas spring body 410, first joint 420, first pin shaft 421, first mounting seat 422, second joint 430, second pin shaft 431, second mounting seat 432,

[0035] Yaw pulley assembly 500,

[0036] Connecting block 600, first connecting end 610, second connecting end 620, trigger 630, bending part 640, trigger switch 700, mechanical contact 710, connecting part 711, extending part 712, triggering part 713,

[0037] Frame assembly 800, cross arm assembly 810, display assembly 820, C-ring assembly 830, flat plate assembly 840, tube assembly 850. Detailed implementation manners

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other implementation manners can also be obtained.

[0039] To make the drawings concise, only the parts related to the utility model are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, components with the same structure or function are only schematically shown as one of them, or only one of them is marked. In this document, "one" not only means "only this one", but also means "more than one" situation.

[0040] It should also be further understood that the term "and / or" used in the specification and appended claims of the present invention refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0041] In this text, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] In addition, in the description of the present utility model, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0043] As Figures 1-4 shown, this embodiment provides a lifting mechanism, including a frame assembly 100 and a lifting assembly 200. The lifting assembly 200 is slidably connected in the frame assembly 100, and the lifting assembly 200 is caused to move up and down inside the frame assembly 100 by a power source, which is used to finally control the up and down movement of the C-arm. The power source can be, for example, a motor, etc., but is not limited thereto. The lifting assembly 200 generally connects to the C-arm through a yaw pulley assembly 500 to achieve the movement of the C-arm in other directions besides the up and down movement, meeting the requirements of medical adjustment of the C-arm in all directions. The frame assembly 100 and the lifting assembly 200 can achieve lifting and sliding guidance through a direct socketing method, or other common guiding components or guiding structures can also be used to achieve the lifting guiding function, ensuring the stability, safety, and lifting accuracy requirements during the lifting process of the lifting assembly 200. For example: the lifting assembly 200 can be guided to move along a preset direction by setting a sliding groove on the frame assembly 100 and a sliding block on the lifting assembly 200, and the sliding block slides inside the sliding groove, improving the lifting accuracy; or the lifting guidance can also be achieved through a standard guide rail 150, etc., but is not limited thereto.

[0044] A mobile C-arm X-ray machine is a high-tech medical imaging device mainly used in operating rooms, emergency rooms and other places. Its main feature is that it has a C-shaped robotic arm that can rotate and position around the patient at multiple angles to obtain X-ray images from different angles. This device is crucial for orthopedic surgeries, vascular surgeries and other surgeries that require precise imaging. The main components of a mobile C-arm X-ray machine include an X-ray generating device, a C-arm frame, an X-ray imaging system (usually including an image intensifier and a flat panel detector), etc. These components work together to provide high-resolution X-ray images in real time during the surgery, helping doctors perform surgical operations more accurately. The lifting mechanism of a mobile C-arm X-ray machine usually adopts a motor design, enabling the C-arm to perform various electric motions, such as rotating around the horizontal axis, sliding along an arc, lifting up and down, and extending horizontally, etc., to meet different surgical needs. The transmission mode of these devices relies on motors and precise mechanical designs, ensuring the accuracy and efficiency of operations.

[0045] In a mobile C-arm X-ray machine, when controlling the up-and-down sliding of the lifting component 200 through a power source, the power source needs to transmit the power to the lifting component 200 through a transmission mechanism, such as converting the rotational power of the motor into the lifting power of the lifting component 200 to achieve the change of motion form and power transmission, etc. Since the lifting mechanism given in this embodiment is used for the lifting adjustment of a mobile C-arm X-ray machine, which is a medical adjustment for medical equipment, higher requirements are put forward for the overall lifting adjustment accuracy, safety, stability and reliability, etc. of the lifting mechanism.

[0046] In existing lifting mechanisms, mobile C-arm X-ray machines and other medical equipment mostly adopt screw rod and gear-rack transmission methods to achieve the lifting motion control of the C-arm, but there are problems such as insufficient performance in terms of reliability, transmission power and durability of continuous operation, etc.

[0047] To solve this problem, this embodiment provides a lifting mechanism and a mobile C-arm X-ray machine. The lifting mechanism further includes a sprocket assembly 300 that connects the frame assembly 100 and the lifting component 200. When the sprocket is in operation, the sprocket assembly 300 will drive the lifting component 200 to move;

[0048] Further, the sprocket assembly 300 includes a first sprocket 310, a second sprocket 320, and a chain 330. The first sprocket 310 and the second sprocket 320 are both rotatably mounted on the frame assembly 100. Usually, the first sprocket 310 is located at a position near the top of one side of the frame assembly 100, while the second sprocket 320 is located at a position near the bottom of the same side of the frame assembly 100. The first sprocket 310 and the second sprocket 320 have the same diameter, and the line connecting the corresponding center points of the first sprocket 310 and the second sprocket 320 is parallel to the movable direction of the lifting assembly 200. A chain 330 is drivingly connected to the first sprocket 310 and the second sprocket 320. A preset connection point is selected on the chain 330 between the first sprocket 310 and the second sprocket 320 to connect the chain 330 to the lifting assembly 200, so that the chain 330 can drive the lifting assembly 200 to move up and down during the movement process. The distribution position and distance of the first sprocket 310 and the second sprocket 320 need to meet the preset lifting movement stroke requirements of the lifting assembly 200, that is, when the preset connection point drives the lifting assembly 200 to the highest point in the stroke, the preset connection point is still lower than the setting position height of the first sprocket 310; when the preset connection point drives the lifting assembly 200 to the lowest point in the stroke, the preset connection point is still higher than the setting position height of the second sprocket 320, so as to avoid the problem of movement interference between the first sprocket 310 or the second sprocket 320 and the lifting assembly 200. Among them, the diameters of the first sprocket 310 and the second sprocket 320 are set to be the same, and the line connecting the corresponding center points of the first sprocket 310 and the second sprocket 320 is parallel to the movable direction of the lifting assembly 200. The purpose is to ensure that the position of the chain 330 between the first sprocket 310 and the second sprocket 320 in the transmission state after installation is parallel to the movable direction of the lifting assembly 200. In this state, during the process of the chain 330 driving the lifting assembly 200 to move up and down, there will be no change in the relative position between the preset connection point and the corresponding connection point on the lifting assembly 200, ensuring the smooth and precise movement process of the lifting assembly 200;

[0049] In other embodiments, the first sprocket 310 and the second sprocket 320 may also have different diameter sizes. For example, the diameter size of the first sprocket 310 or the second sprocket 320 directly connected to the power source may be designed to be relatively smaller. If the power source is a motor, the distance that the chain 330 moves when the motor rotates one circle is smaller, making it easier to control the accuracy of the lifting speed of the lifting assembly 200 driven by the chain 330 or the accuracy of the stopping position of the lifting assembly 200. Of course, in order to further reduce the influence of the motor speed, it is not excluded to set a speed reduction mechanism, such as a speed reducer or a speed reduction gear mechanism, between the motor and the first sprocket 310 or the second sprocket 320, and it is not limited to this; in this embodiment, it is preferably that the chain 330 directly connected to the lifting assembly 200 is in a vertical state. When setting the first sprocket 310 and the second sprocket 320, the vertical distance from the side of the first sprocket 310 and the second sprocket 320 close to the lifting assembly 200 to the surface of the lifting assembly 200 is the same. Of course, in this state, it is required that the lifting assembly 200 is relative to the plane of the side surface of the first sprocket 310 and the second sprocket 320. In essence, it is required that the vertical chain 330 on the side close to the lifting assembly 200 is parallel to the movable direction of the lifting assembly 200. This can make it more convenient for the chain 330 to be directly connected to and drive the lifting assembly 200. In another embodiment, if the chain 330 does not meet the above requirements, an adjustment mechanism may also be provided at the connection position of the chain 330 and the lifting assembly 200. For example, a telescopic adjustment member, such as a telescopic rod, or a telescopic sliding fit assembly, is provided in the direction towards the chain 330 and perpendicular to the movement direction of the lifting assembly 200, or a baffle is provided on the lifting assembly 200, and a connecting point is preset on the chain 330 to connect a roller 130 or a ball bead, so that the chain 330 can restrict the lifting movement of the lifting assembly 200 in the vertical direction, and in other directions, the chain 330 and the lifting assembly 200 can be adjusted to meet the transmission requirements when the chain 330 on the side close to the lifting assembly 200 is not parallel to the movable direction of the lifting assembly 200, and it is not limited to this.

[0050] Due to the transmission through the sprocket assembly 300, the chain 330 has stronger strength compared to the surface thread of a gear or a screw. Under long-term use conditions, especially under continuous pressure-bearing conditions, the reliability, stability, control accuracy, durability, and power transmission ability of the chain 330 are all more excellent. When performing lifting adjustment on a mobile C-arm, it can meet the movement adjustment requirements of medical equipment. Similarly, it is not excluded that this lifting mechanism can be used for the lifting adjustment of other medical equipment, such as operating tables, rehabilitation equipment, medical monitors, inspection lights, etc., and it is not limited to this.

[0051] In another embodiment, there may be multiple sprocket assemblies 300, that is, a plurality of sets of first sprockets 310 and second sprockets 320 may be adopted. Chains 330 are connected between multiple sets of first sprockets 310 and corresponding second sprockets 320. Synchronous operation can be achieved through multiple sprocket assemblies 300, so that the lifting assembly 200 can be uniformly subjected to upward and downward lifting forces, and the transmission pressure on a set of sprocket assemblies 300 can also be reduced. Of course, in other embodiments, multiple sprocket assemblies 300 can also be used for step-by-step transmission, reducing the movement stroke of the lifting assembly 200 controlled by a set of sprocket assemblies 300. By using multiple sprocket assemblies 300 in cooperation, the lifting stroke of the lifting assembly 200 can be increased to meet the lifting stroke requirements or expand the lifting stroke, etc. In this state, the lifting assembly 200 can be designed with multiple sections, but it is not limited thereto.

[0052] In one embodiment, a buffer assembly may be provided between the lifting assembly 200 and the frame assembly 100. The buffer assembly can provide a vertically upward force to offset the gravity of the C-arm part. When the power source drives the lifting assembly 200 to move up and down through the sprocket assembly 300, the transmission pressure on the sprocket assembly 300 or the power load requirement provided by the power source can be reduced. The buffer assembly can be a gas spring assembly 400. The gas spring assembly 400 is mainly a device that provides elastic force or supporting force through gas pressure, which can more effectively share the transmission pressure of the sprocket assembly 300, and the gas spring assembly 400 can provide a longer movement stroke to meet the long-distance lifting requirements of the lifting assembly 200. In other embodiments, deformation springs, elastic material products, etc. can also be used to offset the gravity of the C-arm part, but it is not limited thereto.

[0053] Further, a lifting groove 110 is provided along the longitudinal direction at the middle position of the frame assembly 100. The lifting assembly 200 is slidably connected to the inside of the lifting groove 110, and an installation hole 210 is provided in the middle of the lifting assembly 200, and the spring assembly is arranged inside the installation hole 210. The gas spring assembly 400 is preferably in an upright state to make the elastic force of the gas spring opposite to the gravity direction of the lifting assembly 200, so as to better offset the gravity of the C-arm part. Of course, in other embodiments, it is not excluded that there is an angle between the gas spring assembly 400 and the gravity direction of the lifting assembly 200. Since the gas spring assembly 400 is installed in the middle installation hole 210 of the lifting assembly 200, the gas spring assembly 400 is generally located at or near the middle position of the lifting assembly 200, realizing a higher supporting effect of the gas spring assembly 400 on the lifting assembly 200;

[0054] The bottom of the gas spring assembly 400 is installed at the bottom of the lifting groove 110, and the top of the gas spring assembly 400 is installed at the top of the lifting assembly 200. Of course, in other embodiments, a yaw pulley assembly 500 is also provided at the top of the lifting assembly 200 for functions such as adjusting the C-arm in other directions. At this time, the top of the gas spring assembly 400 can also be directly installed on the bottom surface of the yaw pulley assembly 500, so that the gas spring assembly 400 is indirectly connected to the lifting assembly 200, realizing the support of the gas spring assembly 400 during the lifting process of the lifting assembly 200.

[0055] Further, when the top of the gas spring assembly 400 is directly connected to the yaw pulley assembly 500, the yaw pulley assembly 500 is provided at the top of the lifting assembly 200. The bottom end of the yaw pulley assembly 500 extends into the interior of the mounting hole 210 and is connected to the inner wall of the mounting hole 210, which is more convenient for connecting the gas spring assembly 400 to the yaw pulley assembly 500 and reducing the length design requirements of the gas spring assembly 400.

[0056] In one embodiment, the gas spring assembly 400 includes a gas spring body 410, a first joint 420, a first pin shaft 421, a first mounting seat 422, a second joint 430, a second pin shaft 431, and a second mounting seat 432. By installing the first joint 420 and the second joint 430 at both ends of the gas spring respectively, installing the first mounting seat 422 at the bottom of the lifting groove 110, connecting the second mounting seat 432 to the bottom surface of the yaw pulley assembly 500, connecting the first mounting seat 422 and the first joint 420 through the first pin shaft 421, and connecting the second mounting seat 432 and the second joint 430 through the second pin shaft 431, the two ends of the gas spring assembly 400 are respectively connected to positions near the bottom of the frame assembly 100 and the bottom surface of the yaw pulley assembly 500. Since the yaw pulley assembly 500 is connected to the top of the lifting assembly 200, the two ends of the gas spring assembly 400 are indirectly connected to the frame assembly 100 and the lifting assembly 200 respectively. Due to the functions of the first pin shaft 421 and the second pin shaft 431, on the one hand, it is more convenient and fast to disassemble and assemble the gas spring assembly 400, and on the other hand, the first pin shaft 421 and the second pin shaft 431 provide a free space for rotational adjustment at both ends of the gas spring assembly 400. When there are slight or small position deviations during the movement of the lifting assembly 200, the connection adjustment of the gas spring assembly 400 can be realized, avoiding the influence of the above position deviations on the normal operation of the gas spring assembly 400.

[0057] Such as Figures 4-6As shown, in one embodiment, the first sprocket 310 includes a driven wheel bracket 311, a first driven sprocket 312 and an auxiliary plate 313. The first driven sprocket 312 is connected by rotating on the driven wheel bracket 311, and the driven wheel bracket 311 is connected to the frame assembly 100 through the auxiliary plate 313. At least one auxiliary plate 313 is used. When there are two auxiliary plates 313, the auxiliary plates 313 are respectively located on both sides of the driven wheel bracket 311. The auxiliary plate 313 can better connect the driven wheel bracket 311 to the frame assembly 100. The auxiliary plate 313 preferably uses a structure similar to a vertical angle iron to facilitate the auxiliary plate 313 to be better fitted and fixed to the driven wheel bracket 311 and the frame assembly 100 at the same time.

[0058] Furthermore, a waist-shaped hole is provided on the auxiliary plate 313, and a fastener can pass through the waist-shaped hole to connect the auxiliary plate 313 with the driven wheel bracket 311. By adjusting the position of the fastener in the waist-shaped hole, the height position of the driven wheel bracket 311 can be adjusted, and then the distance between the first driven sprocket 312 and the second driven sprocket 321 can be adjusted to meet the different lifting height adjustment requirements of the lifting assembly 200, or the tightness of the chain 330 connected between the first driven sprocket 312 and the second driven sprocket 321 can be adjusted to improve the transmission efficiency, transmission stability, transmission accuracy and service life of the chain 330;

[0059] In one embodiment, the second sprocket 320 includes a second driven sprocket 321, a sprocket bracket 322, a transmission shaft 323 and a synchronous pulley 324. The sprocket bracket 322 is arranged at the bottom of the frame assembly 100. The sprocket bracket 322 is rotatably connected to the transmission shaft 323. The transmission shaft 323 is provided with a second driven sprocket 321 and a synchronous pulley 324. The second driven sprocket 321 corresponds to the first driven sprocket 312 and is connected through a chain 330. The synchronous pulley 324 is externally connected to a motor so that the motor outputs The power can be transmitted in sequence through the synchronous pulley 324, the transmission shaft 323, the second driven sprocket 321, the chain 330, and finally transmitted to the lifting assembly 200 through the chain 330. By setting the transmission shaft 323, the transmission shaft 323 can preset the distance between the synchronous pulley 324 and the second driven sprocket 321. When the second driven sprocket 321 corresponds to the first driven sprocket 312, the synchronous pulley 324 is set at a position away from the second driven sprocket 321, which is convenient for arranging other transmission structures and motors, etc.

[0060] In another embodiment, an encoder 3111 is provided on the driven wheel bracket 311, and the encoder 3111 is used to calculate the lifting distance of the lifting assembly 200 driven by the chain 330. Furthermore, the encoder 3111 can convert the rotation angle or number of circles of the first driven sprocket 312 into an electrical signal to accurately confirm the lifting position of the lifting assembly 200.

[0061] As Figure 6 and Figure 7 shown, in one embodiment, in order to better connect the lifting assembly 200 to the chain 330, a connecting block 600 is provided on the lifting assembly 200. The top and bottom of the connecting block 600 respectively have a first connecting end 610 and a second connecting end 620. The chain 330 is drivingly connected to the first driven sprocket 312 and the second driven sprocket 321, and the chain 330 is disconnected at the position of the connecting block 600, so that one end of the chain 330 is hinged to the first connecting end 610, and the other end of the chain 330 is hinged to the second connecting end 620. By disconnecting the chain 330, the acting force of the lifting of the chain 330 can be transmitted to the connecting block 600 along the longitudinal direction, and it is also convenient for the disassembly and assembly of the chain 330.

[0062] In one embodiment, a trigger member 630 is provided on the connection block 600, and a trigger switch 700 is provided on the frame assembly 100. There are two trigger switches 700, which are respectively located near the top and bottom positions of the frame assembly 100. The trigger member 630 is located between the two trigger switches 700. When the chain 330 drives the lifting assembly 200 to rise or fall, the lifting assembly 200 will not trigger the trigger switch 700 within the preset moving range. However, when the lifting assembly 200 moves to the edge of the preset moving range, in order to prevent the lifting assembly 200 from continuing to rise or fall and exceeding the preset moving range, resulting in the lifting assembly 200 touching the surrounding structures, such as the bottom of the frame assembly 100, etc., at this time, the lifting assembly 200 will drive the trigger member 630 to squeeze the trigger switch 700 at the corresponding position, so that the trigger switch 700 senses the trigger signal and outputs the signal, and timely and automatically controls the power source to stop operating, such as stopping the motor from rotating, or starting a braking mechanism, etc., to achieve the timely stop of the movement of the lifting assembly 200. Since when the trigger member 630 contacts the trigger switch 700 at the top position, the top position near the trigger member 630 will contact the trigger switch 700 first, and when the trigger member 630 contacts the trigger switch 700 at the bottom position, the bottom position near the trigger member 630 will contact the trigger switch 700 first. In order to prevent the trigger switch 700 from being damaged due to excessive squeezing of the trigger switch 700 in the case of a malfunction between the trigger member 630 and the trigger switch 700, the trigger switch 700 is provided on the side of the trigger member 630. The trigger member 630 is preset with a length dimension along the longitudinal direction, which can leave a certain trigger response time when the trigger member 630 contacts the trigger switch 700. Even in the case of a trigger failure, the trigger member 630 can continue to move. The maximum squeezing distance between the trigger member 630 and the trigger switch 700 has been preset in advance, and the trigger member 630 will not continue to move infinitely towards the trigger switch 700 and squeeze the trigger switch 700, thus protecting the trigger switch 700. At the same time, by providing a bending portion 640 at the top and bottom positions of the trigger switch 700, the bending portion 640 bends away from the trigger switch 700. Therefore, when the trigger member 630 moves towards the trigger switch 700, the trigger member 630 will first contact the bending portion 640 of the trigger switch 700, so that the distance between the trigger member 630 and the trigger switch 700 gradually approaches until the preset closest distance, effectively avoiding the sudden contact between the trigger member 630 and the trigger switch 700, which may cause damage to the trigger switch 700.

[0063] In one embodiment, a mechanical contact 710 is provided on the trigger switch 700. The mechanical contact 710 includes a connecting portion 711, an extending portion 712, and a triggering portion 713. The triggering portion 713 is connected to the extending portion 712, the extending portion 712 is connected to the connecting portion 711, and the connecting portion 711 is connected to the trigger switch 700. When the trigger member 630 moves to the edge position of the stroke, the trigger member 630 will squeeze the triggering portion 713, causing the triggering portion 713 to move and squeeze the trigger point of the trigger switch 700, so as to transmit the trigger signal to the trigger switch 700, and output the trigger signal through the trigger switch 700, and timely control the lifting assembly 200 to stop moving, such as by turning off the motor power supply or cutting off the motor switch, etc., which is not limited thereto;

[0064] Further, it is connected to the trigger switch 700 through the connecting portion 711, and the connecting portion 711 faces the trigger member 630. The extending portion 712 is provided on the connecting portion 711. The distal end of the extending portion 712 extends away from the connecting portion 711, and the distal end of the extending portion 712 also extends away from the trigger switch 700. Moreover, for the extending portions 712 connected to one trigger switch 700, the distal ends of these extending portions 712 extend away from the direction of another trigger switch 700. The distal end of the trigger switch 700 is connected to the triggering portion 713. The shape of the triggering portion 713 is preferably a columnar arc surface. Of course, in other embodiments, it can also be in the form of a spherical surface or a ball, etc., which is not limited thereto. The purpose is to achieve smooth contact and extrusion between the triggering portion 713 and the trigger member 630 and minimize friction. During the triggering process, the trigger member 630 will squeeze the triggering portion 713. After the triggering portion 713 is squeezed, it will cause the extending portion 712 to bend and deform, and cause the triggering portion 713 to move towards the trigger point of the trigger switch 700, and finally squeeze the trigger point, realizing the transmission of the mechanical signal to the trigger switch 700 and outputting the trigger signal. The purpose of this design is to increase the extension length of the extending portion 712, facilitating the change of the position of the triggering portion 713 by the deformation of the extending portion 712. When the triggering portion 713 stops being squeezed, under the resilience of the extending portion 712, the triggering portion 713 will automatically reset. And through the extending and tilting direction of the extending portion 712, the overall triggering movement direction of the trigger member 630 and the extending direction of the extending portion 712 maintain a small included angle. For example, when the trigger member 630 moves downward, the bottom bending portion 640 of the trigger member 630 and the extending portion 712 maintain a small included angle or even parallel. As the trigger member 630 continues to move downward, it will more smoothly squeeze the triggering portion 713 and reduce the long-term repeated extrusion damage to the extending portion 712.

[0065] Such as Figures 1-4As shown, in one embodiment, there is a first gap 120 between the lifting assembly 200 and the frame assembly 100. By adding a guide rail 150 and rollers 130 in the first gap 120, the lifting assembly 200 and the frame assembly 100 are restricted, so that there is only freedom of movement in the lifting direction between the lifting assembly 200 and the frame assembly 100, and the degrees of freedom in other directions can be effectively restricted, and the friction during the up and down sliding of the lifting assembly 200 can be reduced; further, the guide rail 150 includes a slide rail 151 and a slider 152. The slide rail 151 is arranged on the frame assembly 100, and the slider 152 is arranged on the lifting assembly 200. The slider 152 can slide on the slide rail 151. At the same time, a guide member 140 is also arranged on the frame assembly 100, and a roller 130 is arranged on the lifting assembly 200. The roller 130 can roll on the guide member 140. The slide rail 151 and the guide member 140 are arranged longitudinally and are respectively located on the opposite side surfaces of the lifting assembly 200, while the slider 152 and the roller 130 are located on the side surface of the lifting assembly 200 and at the bottom position of the lifting assembly 200. The purpose is to have more stroke during the upward movement of the lifting assembly 200. Of course, in order to ensure a more stable and precise sliding connection between the lifting assembly 200 and the frame assembly 100, the guide rail 150 and the rollers 130 can play an effective guiding and limiting role. The rollers 130 can be set in multiple groups, and the paired rollers 130 can be respectively located on both sides of the guide member 140 to achieve the rolling effect of the rollers 130 effectively maintaining a fitting and pressing state on the surface of the guide member 140.

[0066] In one embodiment, a first cushion block 160 is provided at the bottom of the frame component 100. The first cushion block 160 is made of an elastic material. When the lifting component 200 moves downward and the trigger switch 700 at the bottom fails, the lifting component 200 will continue to move downward. To prevent the lifting component 200 from directly and rigidly contacting and colliding with the bottom of the frame component 100, which increases the risk of damage to the lifting component 200, the frame component 100, or the related transmission mechanism, the lifting component 200 can directly contact the first cushion block 160 downward. Since the first cushion block 160 is made of an elastic material, such as rubber or a spring, the braking distance of the lifting component 200 is increased, achieving a buffering effect on the lifting component 200. A limiting block 170 can also be provided near the bottom position on the side of the lifting component 200, and a second cushion block 180 is provided at the top position of the frame component 100. When the trigger switch 700 at the top fails, the lifting component 200 can also be buffer-braked at the edge or outside of its upward stroke. Here, the edge or outside of the pre-trial stroke refers to: under normal working conditions, theoretically, the lifting component 200 will move between the top position point and the bottom position point. Generally, to ensure safety, the lifting component 200 will stop moving when it actually reaches between the top position point and the bottom position point. In case of an emergency, when the lifting component 200 reaches the top position point and the bottom position point, or the lifting component 200 is within a preset range near the top position point or the bottom position point, or the lifting component 200 has moved beyond the top position point or the bottom position point, the first cushion block 160 or the second cushion block 180 will buffer-contact the lifting component 200; in other embodiments, as long as the safe buffer braking of the lifting component 200 can be achieved, the specific positions of the first cushion block 160, the second cushion block 180, or the limiting block 170 may not be specifically limited.

[0067] Such as Figure 8As shown in the figure, the mobile C-arm X-ray machine adopts the above-mentioned lifting mechanism, and further includes a frame assembly 800, a cross arm assembly 810, a C-ring assembly 830 and a display assembly 820; the lifting mechanism is arranged in the frame assembly 800, the cross arm assembly 810 is arranged at the top of the lifting mechanism, the display assembly 820 is arranged on the cross arm assembly 810, the C-ring assembly 830 is arranged on one side of the cross arm assembly 810, and the flat panel assembly 840 and the tube assembly 850 are arranged on the C-ring assembly 830, and the flat panel assembly 840 and the tube assembly 850 correspond to each other; during operation, the position of the lifting mechanism is restricted by the frame assembly 800, and the position and angle of the C-ring assembly 830 of the mobile C-arm X-ray machine are adjusted by the lifting mechanism, the cross arm assembly 810 and the yaw pulley assembly 500, so as to realize the synchronous adjustment of the position and angle of the flat panel assembly 840 and the tube assembly 850, meeting the reliability and precise medical adjustment requirements of the mobile C-arm X-ray machine.

[0068] Among them, the flat panel assembly 840 is used to capture the X-ray image passing through the patient and convert it into a digital image. The tube assembly 850 generates X-rays. When the X-rays pass through the patient's body, they are received by the detector of the flat panel assembly 840 and converted into digital signals, thereby forming an image. Therefore, the tube assembly 850 and the flat panel assembly 840 generally need to be arranged on the C-ring assembly 830 corresponding to each other to ensure that the X-rays can be effectively emitted from the tube assembly 850, pass through the patient, and finally be received by the detector of the flat panel assembly 840.

[0069] The display assembly 820 of the mobile C-arm X-ray machine provides a user interface, allowing the user to perform various settings and operations, such as selecting different imaging modes, adjusting device parameters, accessing the system menu, etc. It includes basic information such as the patient's name, medical record number, age, gender, and examination type. It may also include the doctor's or technician's interpretation of the image, diagnosis opinion, treatment suggestions, etc. The display assembly 820 also displays the device's status information, such as battery power, X-ray tube temperature, error warning, etc., to ensure the safety and normal operation of the device. The system display content can be set according to specific user needs and will not be specifically restricted here.

[0070] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting mechanism, characterized in that, Comprising: A frame component; A lifting component slidably connected to the frame component; A sprocket component including a first sprocket, a second sprocket and a chain. The first sprocket and the second sprocket are respectively arranged at positions close to the top and bottom of the frame component. The first sprocket and the second sprocket are connected by chain drive. One side of the chain is connected to the lifting component and is adapted to drive the first sprocket and / or the second sprocket to rotate through a power source so that the chain drives the lifting component to move up and down.

2. The lifting mechanism according to claim 1, wherein A buffer component is provided between the lifting component and the frame component; The buffer component can be a gas spring component.

3. The lifting mechanism according to claim 2, wherein A lifting groove is provided in the middle of the frame component along the longitudinal direction. The lifting component is arranged inside the lifting groove. The middle of the lifting component has a mounting hole, and the gas spring component is arranged in the mounting hole; The bottom of the gas spring component is mounted on the bottom of the lifting groove, and the top of the gas spring component is mounted at a position close to the top of the lifting component or the top of the gas spring component is mounted at a position close to the top of the lifting component through a yaw pulley component.

4. The lifting mechanism according to claim 3, wherein When the top of the gas spring component is mounted at a position close to the top of the lifting component through a yaw pulley component, the yaw pulley component is arranged at the top of the lifting component, and the bottom end of the yaw pulley component extends into the interior of the mounting hole and is connected to the inner wall of the mounting hole; The gas spring component includes a gas spring body, a first joint, a first pin shaft, a first mounting seat, a second joint, a second pin shaft and a second mounting seat; the bottom of the lifting groove is connected to the first mounting seat, and the bottom surface of the yaw pulley component is connected to the second mounting seat; both ends of the gas spring body are respectively connected to the first joint and the second joint. The first joint is connected to the first mounting seat through the first pin shaft, and the second joint is connected to the second mounting seat through the second pin shaft.

5. The lifting mechanism according to claim 1, wherein The first sprocket includes a driven wheel bracket, a first driven sprocket and an auxiliary plate. The first driven sprocket is rotatably connected to the driven wheel bracket, and the driven wheel bracket is arranged on the frame component through the auxiliary plate; the second sprocket includes a second driven sprocket, a sprocket bracket, a transmission shaft and a synchronous belt pulley. The sprocket bracket is arranged on the frame component. The transmission shaft is rotatably connected to the sprocket bracket. The second driven sprocket and the synchronous belt pulley are connected to the transmission shaft. The synchronous belt pulley is externally connected to a motor. The first driven sprocket and the second driven sprocket are connected by chain drive; An encoder is provided on the driven wheel bracket, and the encoder is used to calculate the lifting distance of the chain driving the lifting component.

6. The lifting mechanism according to claim 5, wherein A connecting block is provided on the side of the lifting assembly, and the connecting block connects the chain and the lifting assembly; The connecting block has a first connection end and a second connection end. The first connection end is hinged to one end of the chain. The other end of the chain sequentially passes through the first driven sprocket and the second driven sprocket and is hinged to the second connection end. Both the first driven sprocket and the second driven sprocket are engaged with the chain and enclosed by the chain.

7. The lifting mechanism according to claim 6, wherein A trigger member is provided on the connecting block, and trigger switches are provided at positions near the top and bottom of the frame assembly. When the chain drives the lifting assembly to rise or fall to a preset position, the trigger member presses the trigger switch so that the lifting assembly stops moving in a direction beyond the preset moving range; The trigger member has a preset length dimension along the moving direction of the lifting assembly, and the two side edge positions of the trigger member in the moving direction of the lifting assembly have bending portions deviating from the direction of the trigger switch.

8. The lifting mechanism according to claim 7, wherein A mechanical contact is provided on the trigger switch. The mechanical contact includes a connecting portion, an extending portion and a triggering portion; the connecting portion is connected to the trigger switch through the extending portion and the connecting portion. When the lifting assembly moves to the edge position of the stroke and the trigger member presses the triggering portion, the triggering portion moves to trigger the trigger switch and outputs a trigger signal to stop the lifting assembly from continuing to move in a direction beyond the preset moving range; The connecting portion is connected to the side surface of the trigger switch facing the trigger member. The proximal end of the extending portion is connected to the end of the connecting portion deviating from the trigger switch. The distal ends of the two extending portions extend towards the opposite sides of the two trigger switches respectively, and the distal ends of the extending portions are inclined and extended away from the corresponding trigger switch. The triggering portion is connected to the direction of the trigger member on the distal end of the extending portion, and the triggering portion corresponds to the triggering point on the corresponding trigger switch, so that the triggering portion is pressed by the trigger member and the triggering portion triggers the triggering point of the trigger switch through the deformation of the extending portion.

9. The lifting mechanism according to any one of claims 1-8, wherein A first gap is left between the lifting assembly and the frame assembly. A guide rail is provided on one side of the lifting assembly in the first gap so that the lifting assembly is slidably connected to the frame assembly. A roller and a guide member are provided at the other side position of the lifting assembly in the first gap. When the lifting assembly moves up and down, the roller is rollingly connected to the guide member; The guide rail includes a slide rail and a slider. The slider is arranged at a position on one side surface of the lifting assembly near the bottom of the lifting assembly. The slide rail is arranged relative to the slider position on the frame assembly, and the slider is slidably connected to the slide rail. A roller is arranged at a position on the other side surface of the lifting assembly near the bottom of the lifting assembly. A guide member is arranged relative to the slider position on the frame assembly, and the roller is in rolling connection with the guide member.

10. A lifting mechanism according to any one of claims 1-8, characterized in that a first cushion block is provided at the bottom of the frame assembly. The first cushion block is made of an elastic material and is adapted to buffer and limit the lifting assembly at or beyond the edge of the preset moving stroke at the bottom; a limiting block is provided at a position on the side surface of the lifting assembly near its bottom. A second cushion block is provided at the top of the frame assembly relative to the limiting block position. The second cushion block is made of an elastic material and is adapted to buffer and limit the lifting assembly at or beyond the edge of the preset moving stroke at the top.

11. Mobile C-arm X-ray machine, characterized in that, Using the lifting mechanism according to any one of claims 1-10, further comprising a frame assembly, a cross-arm assembly, a C-ring assembly and a display assembly; the lifting mechanism is arranged in the frame assembly. The cross-arm assembly is arranged at the top of the lifting mechanism. The display assembly is arranged on the cross-arm assembly. The C-ring assembly is arranged on one side of the cross-arm assembly. A flat panel assembly and a tube assembly are arranged on the C-ring assembly, and the flat panel assembly and the tube assembly correspond to each other.

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