X-ray photography system and detection bed thereof

Abstract

The invention discloses an X-ray photography system and a detection bed thereof, the detection bed comprises a base, a lifting support, a gravity balance part and an electric driving part, the gravity balance part provides upward self-adaptive supporting force for the lifting support, and the self-adaptive supporting force is used for balancing and offsetting the gravity borne by the lifting support; the electric driving part is used for electrically driving the upper end of the lifting support to lift relative to the lower end so as to drive the bearing platform to lift. Due to the fact that the detection bed is provided with the gravity balance part and the electric driving part, the gravity balance part can provide supporting force matched with the gravity balance part according to the gravity borne by the lifting support, and stable hovering of the bearing platform can be achieved no matter whether a patient exists on the bearing platform or not; on the basis of gravity balance of the gravity balance part, the electric driving part only needs to output small thrust or pulling force to drive the bearing platform to electrically ascend and descend, rapid ascending and descending driving of the detection bed can be achieved, and meanwhile the ascending and descending stroke of the detection bed can be increased.

Description

Technical Field

[0001] This invention relates to the field of medical testing technology, specifically to an X-ray imaging system and its testing bed. Background Technology

[0002] The X-ray imaging system (DR equipment) includes a lifting examination bed, which is a lifting device. The lifting examination bed can be raised or lowered to a specific height position as needed to facilitate use by different people. The lifting examination bed can also be positioned and stopped at any height position to carry the patient at any height position within its travel range.

[0003] However, in existing lifting inspection beds, the same drive mechanism serves as both lifting drive and stopping support, which requires the drive mechanism to bear a large weight and require a large driving force to drive the lifting inspection bed to lift, resulting in slow lifting speed and limited stroke. Summary of the Invention

[0004] This invention provides an X-ray imaging system and its inspection bed, which solves the problems of slow lifting speed and short lifting stroke of the lifting inspection bed.

[0005] In one embodiment, a detection bed for an X-ray imaging system is provided, comprising:

[0006] Base;

[0007] A lifting support, comprising an upper end and a lower end that can be lifted and moved relative to each other, wherein the lower end of the lifting support is connected to the base;

[0008] A support platform is disposed at the upper end of the lifting bracket, and the support platform is used to support the object to be tested;

[0009] A gravity balancer, one end of which is rotatably connected to the base, and the other end of which is rotatably connected to the lifting bracket, provides an upward adaptive support force to the lifting bracket, the adaptive support force being used to balance and counteract the gravity borne by the lifting bracket; and

[0010] An electric drive unit is disposed on the base and connected to the lifting bracket. The electric drive unit is used to electrically drive the upper end of the lifting bracket to rise and fall relative to the lower end, so as to drive the support platform to rise and fall.

[0011] In one embodiment, the gravity balancer and the electric drive are staggered, and the range of motion of the gravity balancer and the range of motion of the electric drive do not overlap.

[0012] In one embodiment, the gravity balancer and the electric drive are located on the same side of the lifting bracket, and the central axis of the gravity balancer and the central axis of the electric drive are located in different vertical planes; or, the gravity balancer is located on one side of the lifting bracket, and the electric drive is located on the other side of the lifting bracket.

[0013] In one embodiment, the gravity balancing component includes a first fixed rod, a first movable rod, and a damping structure. One end of the first movable rod is connected to the first fixed rod via the damping structure. The first movable rod can extend and retract relative to the first fixed rod along the axial direction of the first fixed rod. The damping structure generates a corresponding adaptive support force based on the degree of extension and retraction of the first movable rod relative to the first fixed rod. The end of the first fixed rod away from the first movable rod is rotatably connected to one of the base and the lifting bracket, and the end of the first movable rod away from the first fixed rod is rotatably connected to the other of the base and the lifting bracket.

[0014] In one embodiment, the damping structure includes a spring and / or a slider, the slider being in sliding contact with the first fixed rod, and the friction between the slider and the first fixed rod forming the adaptive support force.

[0015] In one embodiment, the gravity balancer includes a gas spring.

[0016] In one embodiment, the electric drive unit includes an electric push rod and a power source. One end of the electric push rod is rotatably connected to the base, and the other end of the electric push rod is rotatably connected to the lifting bracket. The power source is disposed on the base and connected to the electric push rod. The power source is used to drive the electric push rod to move, thereby driving the support platform to move up and down.

[0017] In one embodiment, the electric actuator includes one or more of a hydraulic actuator, an electro-hydraulic actuator, a pneumatic actuator, and a motor screw.

[0018] In one embodiment, the lifting support includes a first lifting arm and a second lifting arm arranged in a cross configuration. The lower end of the first lifting arm is rotatably connected to the base, and the upper end of the first lifting arm is movably connected to the bearing platform. The lower end of the second lifting arm is movably connected to the base, and the upper end of the second lifting arm is rotatably connected to the bearing platform. The intersection of the first and second lifting arms is rotatably connected. One end of the gravity balance component is rotatably connected to a portion of the first or second lifting arm above the intersection of the first and second lifting arms. One end of the electric drive component is rotatably connected to the first or second lifting arm.

[0019] In one embodiment, the lifting support includes two sets of lifting arm groups and a connecting arm. Each set of lifting arm groups includes a first lifting arm and a second lifting arm arranged in a cross configuration, and the two sets of lifting arm groups are arranged parallel to each other at intervals. One end of the connecting arm is fixedly connected to the first lifting arm in one set of lifting arm groups, and another end of the connecting arm is fixedly connected to the first lifting arm in the other set of lifting arm groups; or, one end of the connecting arm is fixedly connected to the second lifting arm in one set of lifting arm groups, and another end of the connecting arm is fixedly connected to the second lifting arm in the other set of lifting arm groups; one end of the electric drive component is rotatably connected to the connecting arm.

[0020] In one embodiment, each group of lifting arms is connected to one of the gravity balance components.

[0021] In one embodiment, the gravity balancer and the electric drive unit are disposed between the two sets of lifting arm assemblies.

[0022] In one embodiment, the upper end of the first lifting arm is provided with a first roller, and the first lifting arm rolls relative to the support platform via the first roller; the lower end of the second lifting arm is provided with a second roller, and the second lifting arm rolls relative to the base via the second roller.

[0023] In one embodiment, an X-ray imaging system is provided, including an emitting device and the detection bed described above;

[0024] The emitting device includes an emitting component, which is used to emit X-rays to irradiate the object to be inspected on the carrier platform.

[0025] According to the X-ray imaging system and its examination bed in the above embodiment, since the examination bed is equipped with a gravity balance component and an electric drive component, the gravity balance component can provide a support force adapted to the gravity borne by the lifting support, so that the carrying platform can be stably suspended regardless of whether there is a patient on it; based on the gravity balance of the gravity balance component, the electric drive component only needs to output a small thrust or pull force to drive the electric lifting of the carrying platform, which can realize the rapid lifting and lowering drive of the examination bed, and at the same time increase the lifting stroke of the examination bed. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure in one embodiment where the detection bed is raised to its highest position;

[0027] Figure 2 This is a side view of the detection bed at its highest position in one embodiment;

[0028] Figure 3 This is a schematic diagram of the structure in one embodiment where the detection bed is raised to its lowest position;

[0029] Figure 4 This is a side view of the detection bed at its lowest position in one embodiment;

[0030] Figure 5 This is a side view of the detection bed concealing a set of lifting arms in one embodiment;

[0031] Figure 6 This is a side view of the detection bed concealing a set of lifting arms in one embodiment;

[0032] Figure 7 This is a schematic diagram of the structure of the detection bed in one embodiment;

[0033] Figure 8 This is a schematic diagram of the structure of the detection bed in one embodiment;

[0034] The accompanying diagrams are labeled as follows:

[0035] 1-Base, 11-First mounting bracket, 12-Second mounting bracket;

[0036] 2-Lifting bracket, 21-First lifting arm, 211-First roller, 22-Second lifting arm, 221-Second roller, 23-Connecting arm, 231-Third mounting base;

[0037] 3-Bearing platform;

[0038] 4- Gravity balancing component, 41- First fixed rod, 42- First movable rod;

[0039] 5-Electric drive component, 51-Electric push rod, 511-Second fixed rod, 512-Second moving rod, 52-Power source. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of this application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to this application are not shown or described in the specification. This is to avoid obscuring the core parts of this application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0041] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0042] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0043] In one embodiment, an X-ray imaging system examination bed is provided. This examination bed is used to carry the object to be examined (e.g., a patient) for X-ray imaging to obtain examination images for lesion identification. The examination bed includes a gravity balancer and an electric drive unit. The gravity balancer is used to balance the weight borne by the examination bed, similar in function to the mounting blocks of an elevator. Based on the gravity balance of the gravity balancer, the driving force output by the electric drive unit does not need to exceed the weight borne by the examination bed; a relatively small force output by the electric drive unit can achieve electric lifting and lowering of the examination bed. The electric drive unit inputs a small pulling or pushing force without needing to support the weight borne by the examination bed, giving it greater freedom of movement. This allows for faster lifting and lowering of the examination bed, improving lifting efficiency, and also increases the driving stroke of the electric drive unit, thereby increasing the lifting and lowering range of the examination bed. Therefore, this examination bed can meet the needs of more application scenarios.

[0044] In this embodiment, the electric drive unit can also realize the electric drive lifting of the examination bed. Doctors can control the lifting height of the examination bed through input devices such as operation buttons or display screens, without having to manually press down or pull up the examination bed to achieve the lifting of the examination bed. The operation is time-saving, labor-saving, simpler, more convenient and efficient.

[0045] Please refer to Figures 1 to 5 The X-ray imaging system in this embodiment mainly includes a base 1, a lifting bracket 2, a bearing platform 3, a gravity balance component 4, and an electric drive component 5.

[0046] The base 1 can be fixed to the ground, and the bottom of the base 1 can also be equipped with a movable structure such as a rolling mechanism, so that the testing bed can be moved to different scenarios. The lifting bracket 2 includes an upper end and a lower end that can be lifted and moved relative to each other. The lifting bracket 2 is mounted on the base 1, and the lower end of the lifting bracket 2 is connected to the base 1.

[0047] The support platform 3 is installed on the upper end of the lifting bracket 2. The upper end of the lifting bracket 2 is connected to the support platform 3. The support platform 3 is installed horizontally or nearly horizontally. The upper surface of the support platform 3 is the support surface, which is used to support the object being tested.

[0048] One end of the gravity balancer 4 is rotatably connected to the base 1, and the other end is rotatably connected to the lifting bracket 2. The gravity balancer 4 always provides an upward adaptive support force to the lifting bracket 2. This adaptive support force is used to balance and counteract the gravity borne by the lifting bracket 2. The gravity borne by the lifting bracket 2 includes the gravity of the bearing platform 3 and the gravity of the bearing platform 3 and the object being tested. That is, the lifting bracket 2 can balance the gravity of the bearing platform 3 whether it is unloaded or loaded with the object being tested. The gravity balancer 4 serves to support the bearing platform 3, allowing the bearing platform 3 to be stably stopped at any height.

[0049] One end of the electric drive component 5 is rotatably connected to the base 1, and the other end of the electric drive component 5 is rotatably connected to the lifting bracket 2. The electric drive component 5 is used to electrically drive the upper end of the lifting bracket 2 to move up and down relative to the lower end, so as to drive the bearing platform 3 to move up and down, and can drive the bearing platform 3 and the object being tested to move up and down simultaneously.

[0050] In this embodiment, the side of the lifting bracket 2 is a scissor fork structure, also presenting an X-shape. The lifting bracket 2 is a double-sided scissor fork structure, comprising two parallel scissor fork joints connected as one unit. The double-sided scissor fork structure has higher stability, which can improve the stability of the lifting of the testing bed, especially the stability of the lifting of the testing bed when it is carrying the object being tested.

[0051] Specifically, the lifting support 2 includes two sets of lifting arm assemblies. Each set includes a first lifting arm 21 and a second lifting arm 22 arranged in a scissor-fork structure. The scissor-fork structure formed by one set of lifting arm assemblies is distributed in one vertical plane, and the scissor-fork structure of the other set of lifting arms is distributed in another vertical plane. The two sets of lifting arm assemblies are arranged in parallel, and the two scissor-fork structures move up and down in two vertical spaces respectively. The lifting support 2 also includes a connecting arm 23. One end of the connecting arm 23 is fixedly connected to the second lifting arm 22 of one set of lifting arm assemblies, and the other end of the connecting arm 23 is fixedly connected to the second lifting arm 22 of the other set of lifting arm assemblies. The connecting arm 23 connects the second lifting arms 22 of the two sets of lifting arm assemblies into a single structure, allowing the two sets of lifting arm assemblies to rise and fall synchronously. The connecting arm 23 also improves the stability of the lifting support 2 structure, forming a three-dimensional H-shaped structure from two parallel planar structures.

[0052] In other embodiments, one end of the connecting arm 23 is fixedly connected to the first lifting arm 21 of a set of lifting arms, and the other end of the connecting arm 23 is fixedly connected to the first lifting arm 21 of another set of lifting arms. The connection arm 23 allows the first lifting arms 21 of the two sets of lifting arms to be connected into a single structure, which can also improve the stability of the lifting bracket 2 structure.

[0053] In other embodiments, the lifting bracket 2 may also include two connecting arms 23, one connecting arm 23 for fixing the two first lifting arms 21, and the other connecting arm 23 for fixing the two second lifting arms 22. To avoid interference and collision between the two connecting arms 23 during the lifting process of the lifting bracket 2, the two connecting arms 23 can be set at different height positions.

[0054] In this embodiment, the connecting arm 23 can be a horizontally arranged crossbar structure, and the connecting arm 23 is perpendicular to the first lifting arm 21 or the second lifting arm 22 on both sides. By using a horizontally arranged connecting arm 23, the length of the connecting arm 23 is minimized, which simplifies the structure of the lifting bracket 2.

[0055] In other embodiments, the connecting arm 23 can be an inclined linkage structure, or the connecting arm 23 can be an X-shaped or other irregular structure. Alternatively, the first lifting arms 21 on both sides can be connected into a single structure, or the second lifting arms 22 on both sides can be connected into a single structure.

[0056] In this embodiment, the lower end of the first lifting arm 21 is rotatably connected to the base 1. The lower end of the first lifting arm 21 can be rotatably connected to the base 1 via a rotating shaft. The rotating shaft is horizontally set, allowing the first lifting arm 21 to tilt and swing relative to the base 1. The upper end of the first lifting arm 21 is movably connected to the support platform 3. The upper end of the first lifting arm 21 is provided with a first roller 212. The upper end of the first lifting arm 21 is rotatably connected to the lower end of the support platform 3 via the first roller 212. The lower end of the support platform 3 can be provided with a corresponding linear guide rail or linear guide groove. The first roller 212 is rotatably connected to the linear guide rail or linear guide groove. The linear guide rail or linear guide groove can limit the movement of the first roller 212, improving the stability of the linear movement of the first lifting arm 21 relative to the support platform 3.

[0057] In other embodiments, a slider may also be provided at the upper end of the first lifting arm 21. The upper end of the first lifting arm 21 is slidably connected to the guide rail or slide groove of the support platform 3 through the slider, which can also realize the linear movement of the first lifting arm 21 and the support platform 3.

[0058] In this embodiment, the lower end of the second lifting arm 22 is movably connected to the base 1. The second lifting arm 22 is provided with a second roller 221, and the lower end of the second lifting arm 22 can be rolledly connected to the base 1 via the second roller 221. The upper end of the base 1 can be provided with a corresponding linear guide rail or linear guide groove. The second roller 221 is rolledly connected to the linear guide rail or linear guide groove. The linear guide rail or linear guide groove can limit the movement of the second roller 221, improving the stability of the linear movement of the second lifting arm 22 relative to the base 1. The upper end of the second lifting arm 22 is rotatably connected to the support platform 3. The upper end of the second lifting arm 22 is rotatably connected to the support platform 3 via a rotating shaft. The rotating shaft is horizontally set, allowing the second lifting arm 22 to tilt and swing relative to the support platform 3.

[0059] In other embodiments, a slider can also be provided at the lower end of the second lifting arm 22. The lower end of the second lifting arm 22 is slidably connected to the guide rail or slide groove of the base 1 through the slider, which can also realize the linear movement of the first lifting arm 21 and the base 1.

[0060] In this embodiment, one end of the first lifting arm 21 and the second lifting arm 22 is limited to move but can rotate, while the other end is movable. The movable end can move back and forth along a straight line, so that when the first lifting arm 21 and the second lifting arm 22 move in a cross manner, the first lifting arm 21 and the second lifting arm 22 can form an X-shaped structure with different heights to realize the lifting of the bearing platform 3.

[0061] In this embodiment, the testing bed has a front-back direction, a left-right direction, and a top-bottom direction. The support platform 3 has a rectangular structure. The width direction of the support platform 3 is the front-back direction of the testing bed, the length direction of the support platform 3 is the left-right direction of the testing bed, and the thickness direction of the support platform 3 is the top-bottom direction of the testing bed.

[0062] The gravity balance component 4 and the electric drive component 5 are staggered and their activity ranges do not overlap. This ensures that the gravity balance component 4 and the electric drive component 5 do not interfere with each other when the lifting support 2 is in motion, thus guaranteeing that the gravity balance component 4 and the electric drive component 5 can move in various ways.

[0063] The gravity balancer 4 and the electric drive unit 5 are located on the same side of the lifting bracket 2, either on the same left or right side. The vertical plane at the intersection of the lifting brackets 2 is used as a reference; this vertical plane is perpendicular to the linear movement direction of the first lifting arm 21 and the second lifting arm 22. The gravity balancer 4 and the electric drive unit 5 are located on the same left or right side of this vertical plane at the intersection of the lifting brackets 2.

[0064] The gravity balancer 4 and the electric drive unit 5 are located on the same side of the lifting bracket 2, and the central axis of the gravity balancer 4 and the central axis of the electric drive unit 5 are located in different vertical planes. That is, the gravity balancer 4 and the electric drive unit 5 are staggered along the front-back direction of the inspection bed. For example, the gravity balancer 4 is located in the middle of the front-back direction of the inspection bed, and the electric drive unit 5 is located in the front and / or rear of the front-back direction of the inspection bed. The gravity balancer 4 and the electric drive unit 5 swing in various different vertical spaces without interfering with each other.

[0065] Please refer to Figure 6 In other embodiments, the gravity balancer 4 is located on one side of the lifting bracket 2, and the electric drive unit 5 is located on the other side of the lifting bracket 2. For example, the gravity balancer 4 is located on the left side of the lifting bracket 2, and the electric drive unit 5 is located on the right side of the lifting bracket 2. Similarly, taking the vertical plane at the intersection of the lifting brackets 2 as a reference object, this vertical plane is perpendicular to the linear movement direction of the first lifting arm 21 and the second lifting arm 22. The gravity balancer 4 is located on the left side of the vertical plane at the intersection of the lifting brackets 2, and the electric drive unit 5 is located on the right side of the vertical plane at the intersection of the lifting brackets 2. The gravity balancer 4 and the electric drive unit 5 are located on both sides of the lifting bracket 2, which also ensures that the activity space range of the gravity balancer 4 and the activity space range of the electric drive unit 5 do not overlap, and the gravity balancer 4 and the electric drive unit 5 will not interfere with each other.

[0066] In this embodiment, the gravity balance component 4 and the electric drive component 5 are arranged between the two sets of lifting arm groups, which can make full use of the space between the two sets of lifting arm groups and reduce the overall size of the testing bed.

[0067] In this embodiment, each lifting arm group is connected to a gravity balancer 4. The two gravity balancers 4 support the two lifting arm groups with scissor differential structures respectively, which can improve the stability of the support provided by the gravity balancers 4.

[0068] In this embodiment, the gravity balance component 4 includes a gas spring, which includes a first fixed rod 41 and a first movable rod 42. The first fixed rod 41 is a tubular structure, and one end of the first movable rod 42 is inserted into the first fixed rod 41. A piston is provided at one end of the first movable rod 42 located inside the first fixed rod 41. A specific gas is provided inside the first fixed rod 41, and the piston can form a movable seal. The first movable rod 42 can move along the axial direction of the first fixed rod 41.

[0069] The end of the first fixed rod 41 away from the first moving rod 42 is rotatably connected to the upper half of the first lifting arm 21, and the end of the first moving rod 42 away from the first fixed rod 41 is rotatably connected to the base 1. The first fixed rod 41 and the first moving rod 42 can be rotatably connected to the first lifting arm 21 and the base 1 respectively through a pin or a rotating shaft or other structure.

[0070] The base 1 is provided with a first mounting seat 11. The end of the first moving rod 42 away from the first fixed rod 41 is rotatably connected to the first mounting seat 11. The gravity balance component 4 can swing relative to the base 1 and the first lifting arm 21 to adapt to the lifting and swinging of the first lifting arm 21.

[0071] In other embodiments, the two ends of the gravity balance member 4 can also be interchanged. The end of the first fixed rod 41 away from the first moving rod 42 is rotatably connected to the base 1, and the end of the first moving rod 42 away from the first fixed rod 41 is rotatably connected to the upper half of the first lifting arm 21. The gravity balance member 4 can also provide an upward adaptive support force to the first lifting arm 21.

[0072] In this embodiment, in the gravity balancer 4, the gas inside the first fixed rod 41 provides a certain supporting force to the first moving rod 42. When the first moving rod 42 moves and retracts towards the gas, the gas is compressed to form a greater supporting force. That is, the more the first fixed rod 41 retracts inward, the greater the adaptive supporting force formed; conversely, the more the first fixed rod 41 extends outward, the smaller the adaptive supporting force formed. Based on this principle, the gravity balancer 4 can adaptively form a corresponding amount of supporting force according to the gravity it bears. In this embodiment, a specific gravity balancer 4 is selected, and the bearing range of the gravity balancer 4 is greater than the sum of the weights of the bearing platform 3 and the object being tested. This allows the adaptive supporting force formed by the gravity balancer 4 to balance the weight of the unloaded bearing platform 3, as well as the total weight of the bearing platform 3 carrying the object being tested. The adaptive support force generated by the gravity balance component 4 is equal to or approximately equal to the weight borne by the lifting bracket 2. The gravity balance component 4 can counteract the weight borne by the lifting bracket 2, so that when the electric drive component 5 drives the lifting bracket 2 to rise and fall, it does not need to overcome the weight borne by the lifting bracket 2, and can easily drive the lifting bracket 2 to rise and fall, thereby easily driving the rise and fall of the testing bed.

[0073] In this embodiment, the electric drive component 5 includes an electric push rod 51 and a power source 52. The power source 52 can be installed at the lower end of the base 1. The lower end of the electric push rod 51 is rotatably connected to the base 1, and the upper end of the electric push rod 51 is rotatably connected to the lifting bracket 2. The power source 52 is an electric drive component that provides electric driving force to the electric push rod 51 so that the electric push rod 51 can extend and retract, thereby driving the upper end of the lifting bracket 2 to move up and down relative to the lower end.

[0074] The electric push rod 51 includes a second fixed rod 511 and a second movable rod 512. The second fixed rod 511 has a tubular structure, and one end of the second movable rod 512 is movably installed inside the second fixed rod 511. The second movable rod 512 can move axially along the second fixed rod 511. The end of the second fixed rod 511 away from the second movable rod 512 is rotatably connected to the base 1, and the end of the second movable rod 512 away from the second fixed rod 511 is rotatably connected to the connecting arm 23. The electric push rod 51 can simultaneously drive two sets of lifting arm groups to move up and down via the connecting arm 23.

[0075] Specifically, a second mounting base 12 may be provided on the base 1, and the end of the second fixed rod 511 away from the second moving rod 512 is rotatably connected to the second mounting base 12 via a rotating shaft. A third mounting base 231 may be provided on the connecting arm 23, and the end of the second moving rod 512 away from the second fixed rod 511 is rotatably connected to the third mounting base 231 via a rotating shaft.

[0076] In other embodiments, the two ends of the electric push rod 51 can also be interchanged. The end of the second fixed rod 511 away from the second moving rod 512 is rotatably connected to the connecting arm 23, and the end of the second moving rod 512 away from the second fixed rod 511 is rotatably connected to the base 1. The electric push rod 51 can also drive the two sets of lifting arm groups to move up and down simultaneously through the connecting arm 23.

[0077] Please refer to Figure 7 In other embodiments, the electric drive unit 5 may also be rotatably connected to one of the lifting arms in a set of lifting groups. For example, the end of the second fixed rod 511 away from the second moving rod 512 is rotatably connected to the base 1, and the end of the second moving rod 512 away from the second fixed rod 511 is rotatably connected to the upper half of the second moving rod 512. The electric push rod 51 may also drive the two sets of lifting arm groups to move up and down simultaneously through the connecting arm 23.

[0078] In this embodiment, the electric actuator 51 can be one or more of the following: hydraulic actuator, electro-hydraulic actuator, pneumatic actuator, and motor screw.

[0079] In one embodiment, such as Figure 1As shown, the electric push rod 51 is a motor screw, and the power source 52 is a drive motor. The drive motor is connected to the motor screw through a transmission assembly such as a worm gear combination. The drive motor drives the screw to move in a straight line. That is, the drive motor drives the second moving rod 512 of the motor screw to move relative to the second fixed rod 511 through the transmission assembly, so as to drive the lifting bracket 2 to rise and fall. When rising, the drive motor rotates in the forward direction, and the drive motor drives the motor screw to rotate and move. The second moving rod 512 of the motor screw extends relative to the second fixed rod 511. The motor screw and the gas spring together push the lifting bracket 2 of the scissor fork to rise, thereby driving the bearing platform 3 to rise. When falling, the drive motor rotates in the reverse direction, and the second moving rod 512 of the motor screw retracts relative to the second fixed rod 511. Under the action of gravity, the gas spring is compressed, driving the lifting bracket 2 of the scissor fork to fall, thereby driving the bearing platform 3 to fall with the lifting bracket 2.

[0080] Alternatively, the drive motor can be directly connected to the motor screw, allowing the drive motor screw to extend and retract. The drive motor can also be directly installed inside the second fixed rod 511, which has a receiving cavity, with the drive motor located within the cavity of the second fixed rod 511.

[0081] In one embodiment, such as Figure 8 As shown, when the electric actuator 51 is a hydraulic actuator or an electro-hydraulic actuator, the power source 52 is a hydraulic power source, also known as an oil pump. The oil pump is connected to the hydraulic actuator through an oil pipe. The oil pump drives the second moving rod 512 of the hydraulic actuator to move relative to the second fixed rod 511 through liquid, thereby driving the lifting bracket 2 to rise and fall. When rising, the oil pump pressurizes the hydraulic actuator, pushing the second moving rod 512 of the hydraulic actuator to extend relative to the second fixed rod 511, pushing the hydraulic and gas springs together to push the lifting bracket 2 of the scissor fork to rise, thereby driving the bearing platform 3 to rise; when falling, the oil pump depressurizes, the second moving rod 512 of the hydraulic actuator retracts relative to the second fixed rod 511, and under the action of gravity, the gas spring is compressed, driving the lifting bracket 2 of the scissor fork to fall, thereby driving the bearing platform 3 to fall with the lifting bracket 2.

[0082] In one embodiment, the electric push rod 51 is a pneumatic push rod, and the power source 52 is a pneumatic power source, also known as an air pump. The air pump is connected to the pneumatic push rod through an air pipe. The air pump drives the second moving rod 512 of the pneumatic push rod to move relative to the second fixed rod 511, thereby driving the lifting bracket 2 to rise and fall. When rising, the air pump pressurizes the pneumatic push rod, pushing the second moving rod 512 of the pneumatic push rod to extend relative to the second fixed rod 511. The pneumatic push rod and the air spring together push the lifting bracket 2 of the scissor fork to rise, thereby driving the bearing platform 3 to rise. When falling, the air pump depressurizes, and the second moving rod 512 of the pneumatic push rod retracts relative to the second fixed rod 511. Under the action of gravity, the air spring is compressed, driving the lifting bracket 2 of the scissor fork to fall, thereby driving the bearing platform 3 to fall along with the lifting bracket 2.

[0083] In this embodiment, the testing bed or other parts such as the main unit may be equipped with drive buttons, and the doctor can operate the electric drive unit 5 to drive the testing bed to rise and fall to a preset position through the drive buttons.

[0084] In this embodiment, since the testing bed is equipped with a gravity balance component 4 and an electric drive component 5, the gravity balance component 4 can provide a support force that matches the gravity borne by the lifting bracket 2, so that the carrying platform 3 can be stably suspended regardless of whether there is a patient on it; based on the gravity balance of the gravity balance component 4, the electric drive component 5 only needs to output a small push or pull force to drive the electric lifting of the carrying platform 3, which can realize the rapid lifting and lowering drive of the testing bed, and at the same time increase the lifting stroke of the testing bed.

[0085] In one embodiment, the gravity balancer 4 can have other structures. For example, the gravity balancer 4 includes a first fixed rod 41, a first movable rod 42, and a damping structure. The first fixed rod 41 and the first movable rod 42 can be the same as those of a gas spring. The first fixed rod 41 is a tubular structure, and one end of the first movable rod 42 is installed inside the first fixed rod 41. The damping structure can be a spring, which is installed inside the first fixed rod 41 and is always in a compressed state. The first movable rod 42 is located at one end of the first fixed rod 41 and connected to the spring. The spring force forms the supporting force of the first movable rod 42. Through the change of the spring force, the gravity balancer 4 can form an adaptive supporting force.

[0086] The damping structure can also be a slider, which is installed inside the first fixed rod 41. The slider is rubbed and slidably connected to the inner side wall of the first fixed rod 41. The first moving rod 42 is located at one end of the first fixed rod 41 and is fixedly connected to the slider. The frictional force formed between the slider and the first fixed rod 41 forms the supporting force of the first moving rod 42. Through the change of the frictional force of the slider, the gravity balance member 4 can form an adaptive supporting force.

[0087] The damping structure may also include a spring and a slider. The first fixed rod 41 is equipped with a spring and a slider. The first moving rod 42 is located at one end of the first fixed rod 41 and is connected to the spring and the slider. The elastic force of the spring and the frictional force of the slider together form the supporting force of the first moving rod 42, so that the gravity balance member 4 can form an adaptive supporting force.

[0088] In one embodiment, the testing bed further includes a height detection sensor, which can be installed on the upper end of the base 1. The height detection sensor is used to detect the height position of the support platform 3. The height detection sensor and the electric drive unit 5 are respectively connected to the controller. The controller controls the electric drive unit 5 to drive the support platform 3 to rise and fall to a preset height position based on the real-time height position of the support platform 3 fed back by the height detection sensor.

[0089] The height detection sensor can provide real-time feedback, improving the accuracy of the electric drive component 5 in raising and lowering the load-bearing platform 3 to the preset height position.

[0090] In one embodiment, the lifting support 2 may also include only one set of lifting arms, with a corresponding gravity balance component 4 and an electric drive component 5. This lifting support 2 can meet the needs of applications with low load-bearing capacity, such as testing beds used for children or pets.

[0091] In one embodiment, an X-ray imaging system is provided, which includes an emitting device and a detection bed as described in any of the above embodiments.

[0092] The emitting device can be a suspended structure or a column structure. The emitting device includes a mounting frame and a head. The head is moved through the mounting frame and is used to emit X-rays to irradiate the object being inspected carried by the inspection bed.

[0093] The receiving device is a flat panel detector, which can be installed below the support platform 3 of the detection bed. The receiving device is used to receive X-rays passing through the object being detected and to generate X-ray data and detection images.

[0094] In this embodiment of the X-ray imaging system, the examination bed is equipped with a gravity balance component 4 and an electric drive component 5. The gravity balance component 4 can provide a support force that is adapted to the gravity borne by the lifting bracket 2, so that the carrying platform 3 can be stably suspended regardless of whether there is a patient on it. Based on the gravity balance of the gravity balance component 4, the electric drive component 5 only needs to output a small push or pull force to drive the electric lifting of the carrying platform 3, which can realize the rapid lifting and lowering drive of the examination bed, and at the same time increase the lifting stroke of the examination bed.

[0095] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. A testing bed for an X-ray imaging system, characterized in that, include: Base; A lifting support, comprising an upper end and a lower end that can be lifted and moved relative to each other, wherein the lower end of the lifting support is connected to the base; A support platform is disposed at the upper end of the lifting bracket, and the support platform is used to support the object to be tested; A gravity balancer is provided, one end of which is rotatably connected to the base and the other end of which is rotatably connected to the lifting bracket. The gravity balancer provides an upward adaptive support force to the lifting bracket, and the adaptive support force is used to balance and counteract the gravity borne by the lifting bracket. as well as An electric drive unit is disposed on the base and connected to the lifting bracket. The electric drive unit is used to electrically drive the upper end of the lifting bracket to rise and fall relative to the lower end, so as to drive the support platform to rise and fall.

2. The detection bed as described in claim 1, characterized in that, The gravity balancer and the electric drive are staggered, and the range of motion of the gravity balancer and the range of motion of the electric drive do not overlap.

3. The detection bed as described in claim 2, characterized in that, The gravity balancer and the electric drive are located on the same side of the lifting bracket, and the central axis of the gravity balancer and the central axis of the electric drive are located in different vertical planes; or, the gravity balancer is located on one side of the lifting bracket, and the electric drive is located on the other side of the lifting bracket.

4. The detection bed as described in claim 1, characterized in that, The gravity balance component includes a first fixed rod, a first movable rod, and a damping structure. One end of the first movable rod is connected to the first fixed rod through the damping structure. The first movable rod can extend and retract relative to the first fixed rod along the axial direction of the first fixed rod. The damping structure generates a corresponding adaptive support force according to the degree of extension and retraction of the first movable rod relative to the first fixed rod. The end of the first fixed rod away from the first movable rod is rotatably connected to one of the base and the lifting bracket, and the end of the first movable rod away from the first fixed rod is rotatably connected to the other of the base and the lifting bracket.

5. The detection bed as described in claim 1, characterized in that, The gravity balance component includes a gas spring.

6. The detection bed as described in claim 1, characterized in that, The electric drive unit includes an electric push rod and a power source. One end of the electric push rod is rotatably connected to the base, and the other end of the electric push rod is rotatably connected to the lifting bracket. The power source is located on the base and connected to the electric push rod. The power source is used to drive the electric push rod to move, thereby driving the support platform to move up and down.

7. The detection bed as described in claim 6, characterized in that, The electric actuator includes one or more of the following: hydraulic actuator, electro-hydraulic actuator, pneumatic actuator, and motor screw.

8. The detection bed as described in claim 1, characterized in that, The lifting support includes a first lifting arm and a second lifting arm arranged in a cross configuration. The lower end of the first lifting arm is rotatably connected to the base, and the upper end of the first lifting arm is movably connected to the bearing platform. The lower end of the second lifting arm is movably connected to the base, and the upper end of the second lifting arm is rotatably connected to the bearing platform. The intersection of the first and second lifting arms is rotatably connected. One end of the gravity balance component is rotatably connected to the portion of the first or second lifting arm above the intersection of the first and second lifting arms. One end of the electric drive component is rotatably connected to the first or second lifting arm.

9. The detection bed as described in claim 8, characterized in that, The lifting support includes two sets of lifting arm groups and a connecting arm. Each set of lifting arm groups includes a first lifting arm and a second lifting arm arranged in a cross configuration. The two sets of lifting arm groups are arranged parallel to each other at intervals. One end of the connecting arm is fixedly connected to the first lifting arm in one set of lifting arm groups, and the other end of the connecting arm is fixedly connected to the first lifting arm in the other set of lifting arm groups; or, one end of the connecting arm is fixedly connected to the second lifting arm in one set of lifting arm groups, and the other end of the connecting arm is fixedly connected to the second lifting arm in the other set of lifting arm groups. One end of the electric drive component is rotatably connected to the connecting arm.

10. The detection bed as described in claim 9, characterized in that, Each of the lifting arm groups is connected to a corresponding gravity balancer; and / or, the gravity balancer and the electric drive unit are disposed between the two lifting arm groups.

11. An X-ray imaging system, characterized in that, Includes a launching device and a detection bed as described in any one of claims 1 to 10; The emitting device includes an emitting component, which is used to emit X-rays to irradiate the object to be inspected on the carrier platform.

Images