CN113582065A - Lifting column and method for controlling the height thereof - Google Patents
Lifting column and method for controlling the height thereof Download PDFInfo
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- CN113582065A CN113582065A CN202110654048.4A CN202110654048A CN113582065A CN 113582065 A CN113582065 A CN 113582065A CN 202110654048 A CN202110654048 A CN 202110654048A CN 113582065 A CN113582065 A CN 113582065A
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Abstract
Disclosed is a lifting column for an X-ray device, which is mobile, wherein the column is preferably rotationally fixed relative to a base of the X-ray device, and the column has sections comprising: a first section having a first end and an opposite second end, the first end being arranged at the base; and a second section having a first end and an opposite second end; wherein the second section is arranged at its first end with an overlap of the second end of the first section and is movable relative to the first section; and a first height adjusting unit including: at least one first threaded elongate member fixed at one of the first and second sections, and a first threaded receiving element arranged at the other of the first and second sections matingly engaged with the threaded elongate member for height adjustment of the post.
Description
The application is a divisional application of applications with the stage date of 2015, 11 months and 11 days and the application number of 201480026975.X in China.
Technical Field
The present invention generally relates to the field of X-ray devices. More particularly, the present invention relates to a mobile X-ray apparatus and even more particularly to a lifting column of a mobile X-ray apparatus.
Background
A lifting column has been disclosed in US2011/0249807Al, which allows lower imaging than usual. However, although the range may have improved, imaging cannot still be performed close to the floor. Furthermore, although the disclosed device can be placed in a compact shape, it is still bulky. One of the reasons for the bulkiness of the device is the use of a counterweight. In addition, the lifting column has many parts and is thus complicated in its construction. And thus its control can be complex as well. In addition, the device may have difficulty obtaining sufficient accuracy with a counterweight driving mechanism. Furthermore, it may also be difficult to adjust the height fast enough.
Thus, there may be a need for a lifting column with an increased reach towards the floor. There may also be a need for a lighter and/or more compact device. Furthermore, there may be a need for a simpler lifting column with fewer parts. Additionally, there may be a need for a lifting column that is simple in construction and/or easy to control. Additionally, there may be a need for height adjustment with greater accuracy and/or faster height adjustment.
Disclosure of Invention
Accordingly, embodiments of the present invention preferably seek to mitigate, alleviate or eliminate one or more deficiencies, disadvantages or issues in the art, such as the above-identified, singly or in any combination by providing a lifting column and its associated method according to the appended patent claims.
In accordance with aspects of the present invention, a lifting column and its associated method are disclosed whereby height adjustment is made with sufficient accuracy and speed.
According to one aspect of the invention, a lifting column for an X-ray device is provided. The X-ray device is mobile. The column is preferably rotationally fixed relative to the base of the X-ray device. The post has a plurality of segments including a first segment having a first end and an opposite second end. Furthermore, the first section is arranged with the first end at the base. The post also has a second section having a first end and an opposite second end. Furthermore, the second section is arranged at its first end with an overlap of the second end of the first section. In addition, the second section is movable relative to the first section. The post further includes a first height adjustment unit comprising at least one first threaded elongate member secured at one of the first and second sections. The first height adjustment unit further comprises a first threaded receiving element arranged at the other of the first section and the second section in mating engagement with the threaded elongate member.
According to another aspect of the invention, a method of controlling the height of a lifting column is provided. The method includes receiving information from a position sensor. In addition, the method includes sending a first control signal to a first motor. In addition, the height of a movable second section of the lifting column is controlled by the first motor by actuating rotational movement of a first threaded receiving element or a first threaded elongate member of a first height adjustment unit. A second control signal is sent to a second motor. Furthermore, the height of a connecting section of the lifting column attached to a telescopic arm is controlled by actuating the rotational movement of a second threaded receiving element or a second threaded elongated member of a second height adjustment unit with a second motor.
According to yet another aspect of the invention, a method of preparing a mobile X-ray apparatus for transport is provided. The method includes controlling a height of a movable second section of a lifting column at a lowest possible position using a first motor. Height control is performed by actuating a rotational movement of a first threaded receiving element or a first threaded elongate member of a first height adjustment unit.
The method also includes controlling a height of a connecting section of the lifting column (the connecting section including an outer part and an inner part attached to a telescopic arm) at a highest possible position using a second motor. In addition, the height control of the connecting element is performed by actuating a rotational movement of a second threaded receiving element or a second threaded elongated member of a second height adjustment unit. Further, the method includes rotating the outer part horizontally about the inner part until a telescoping arm of the device is positioned on top of a base of the device. Additionally, the method may include controlling the height of the attachment section by lowering the attachment section until the telescoping arm is positioned in a locked position (e.g., a hollow space of the base).
Further embodiments of the invention are defined in the dependent claims, wherein the second and subsequent aspects of the invention are characterized by the first aspect as mutatis mutandis.
Some embodiments of the invention allow high precision height adjustment.
Some embodiments of the present invention also allow for the range of operational heights of the telescopic arm and the range of image capture to be extended towards very low positions, thus allowing for image capture at very low positions.
Some embodiments of the invention also allow to obtain a fast and easy rotation with high precision.
Some embodiments of the invention also allow for faster vertical movement of the column, for example if the second section and the connecting section are operated simultaneously.
Some embodiments of the present invention also allow the mobile device to be easily transported due to, for example, a compact size and an increased visibility.
Some embodiments of the invention also allow the height adjustment to be split between the adjustment second section and the adjustment connection section.
Some embodiments of the invention also allow for the accuracy and/or speed of height adjustment to be increased.
Some embodiments of the invention also allow movement of the connecting section in the opposite direction with movement of the movable second section.
Some embodiments of the invention also allow for increased stability and avoid wobbling of the first threaded elongated member, and thus may enable increased precision, reliability, safety and lifetime of the threaded elongated member, the first height adjustment unit and the system.
Some embodiments of the invention also allow the movable second section to be height-quickly adjustable, whereas the connecting section can be used for high precision alignment. Thus, an increase in the adjustment speed and the adjustment accuracy can be achieved at the same time.
Some embodiments of the invention also allow an extension of the reach of the X-ray tube towards the floor.
Some embodiments of the invention also allow for the use of larger front wheels, which improves driving, transport characteristics and accuracy.
Some embodiments of the invention also allow for optimization of reach, or highest possible point, while maintaining a compact size during transport.
Some embodiments of the invention also allow for a reduction in the number of components, since only two sections (i.e. the first and second sections) can be utilized to achieve a sufficient reach and a sufficiently high highest possible point compared to three or more.
Some embodiments of the invention also allow space within the column to be freed.
Some embodiments of the invention also allow the post to be made smaller, i.e., have a smaller circumference or cross-section. Thus, the weight can be reduced.
Some embodiments of the invention also allow the center of gravity to be made lower, for example, if the motor is positioned outside the mast rather than inside the mast and attached to the base.
Some embodiments of the invention also allow for thinner walls and thus less weight of the column.
Some embodiments of the invention also allow for improved stability of the column.
Some embodiments of the invention also allow for a compact size during transport and thus allow for the use of a smaller vehicle, such as a van for transport.
Some embodiments of the invention also allow for a smaller weight of the X-ray device. Thus, it may be easier to use e.g. a van or another small vehicle transport device instead of a truck transport device, and thus lower fuel consumption and cheaper transport may be achieved. This can be important when transporting the mobile X-ray device to the patient, rather than transporting the patient to the X-ray device.
Some embodiments of the invention also allow for a quick and easy control of the height of the lifting column and/or lifting arm.
Some embodiments of the invention also allow for increased speed of adjustment.
Some embodiments of the invention also allow for a lighter device, since the rotating hub can be made smaller and lighter, since for example a rotationally fixed section of the column can be used to make the load smaller.
Some embodiments of the invention also allow the use of a recessed arrangement of columns and thus take advantage of an extension of the X-ray tube to very low range of positions and/or space for larger front wheels and/or arrangement of motors associated with one of the sections of the column outside the column.
It should be emphasized that the term "comprises/comprising" when used in this specification is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.
Drawings
These and other aspects, features and advantages of embodiments of the present invention will become apparent from and elucidated with reference to the following description of embodiments of the invention, taken in conjunction with the accompanying drawings, in which
FIG. 1A is a perspective view of a lifting column;
FIG. 1B is a detailed perspective view of a limit switch of a lifting column;
FIG. 1C is a detailed perspective view of some parts of a height adjustment unit of a lifting column;
FIG. 2A is a side view of a lifting column;
FIG. 2B is a detailed side view of some parts of a height adjustment unit of a lifting column;
FIG. 2C is a detailed side view of a limit switch of one of the lift columns;
FIG. 3A is a side view of a lifting column having segments with a movable second segment in its minimum extended position;
FIG. 4A is a side view of a lifting column having segments with a movable second segment in its minimum extended position and a connecting segment in its lowermost position;
FIG. 4B is a detailed side view of some parts of a height adjustment unit having a lifting column of sections with a movable second section in its minimum extended position and a connecting section in its lowest position;
FIG. 4C is a detailed side view of a limit switch having one of the lift columns of sections with one of the movable second sections in its minimum extended position and one of the connecting sections in its lowest position;
FIG. 5A is a side view of a lifting column having segments with a movable second segment in its most extended position and a connecting segment in its uppermost position;
FIG. 5B is a detailed side view of some parts of a height adjustment unit having a lifting column of sections with a movable second section in its most extended position and a connecting section in its uppermost position;
FIG. 6 is a side view of a mobile X-ray apparatus;
FIG. 7 illustrates the steps of a method of controlling the height of a lifting column; and is
Fig. 8 shows the steps of a method for producing a mobile X-ray apparatus for transport.
Detailed Description
Specific embodiments of the present invention will now be described with reference to the accompanying drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. The terminology used in the accompanying drawings to describe the embodiments in detail is not intended to be limiting of the invention. In the drawings, like numbers refer to like elements.
The following description focuses on an embodiment of the invention applicable to a mobile X-ray apparatus and in particular to a lifting column of a mobile X-ray apparatus. However, it will be appreciated that the invention is not limited to this application and may be applied to many other X-ray devices, including for example stationary X-ray devices.
Fig. 6 shows a mobile X-ray apparatus 600. X-ray device 600 has a base 602 and a lifting column 606. The base 602 has at least one front wheel 604 and at least one rear wheel 612. Preferably, the base 602 has two front wheels and two rear wheels. In this embodiment the front wheel is large, e.g. larger than the normal size of the front wheel of the mobile X-ray device, and preferably has a diameter larger than 12 cm. However, in other embodiments the front wheel is smaller than the normal size of the front wheel of the mobile X-ray device and preferably has a diameter of less than 6 cm. An arm 610 of an X-ray tube (the arm 610 may be telescopic) is attached to the column 606 by a connecting section 608.
In an embodiment of the invention according to fig. 1A (which is a perspective view of a lifting column 606), the lifting column 606 has a second section 106 which is movable, preferably vertically movable, relative to a first section 104. Thus, in this embodiment, the lifting column 606 is rotationally fixed relative to the base 602 of the X-ray device 600. However, in other embodiments, the lifting column may move in one rotational direction relative to the base 602.
The post 606 has a plurality of sections. The post has a second section 106 having a first end and an opposite second end. The second section 106 is positioned with a first end at the top and an opposite second end at the bottom. In addition, the post 606 has a first section 104 having a first end and an opposite second end. The first section 104 is positioned with a first end at the bottom and an opposite second end at the top. Furthermore, the first section 104 is arranged with a first end at the base 602. In one embodiment, the first section is attached to a recess 102 of the base 602 and is fixed to the recess 102, i.e., the base 602 is provided with a recess 102. One first end of the first section 104 of the post 606 is secured to the base 602 at the recess 102 and recessed into the recess 102. Thus, the range reached with the X-ray tube may extend towards the floor and allow the use of larger front wheels, which improves driving, transport properties and accuracy. Furthermore, optimization of reach or highest possible point can be achieved while maintaining a compact size during transport. In addition, a reduction in the number of components can be achieved, since a sufficient reach and a sufficiently high highest possible point can be achieved with only two sections, i.e. the first section and the second section, compared to three or more sections. Thus, in this embodiment, the front wheels are preferably large.
However, in another embodiment, the first section is attached to the base 602 and is fixed directly to the base, i.e., the base does not have the recess 102.
The second section 106 is arranged at its first end with an overlap of the second end of the first section and is movable relative to the first section 104.
Furthermore, as can be seen from fig. 1C, the column 606 further has a first height adjustment unit adapted for adjusting the height of the movable second section 106. The first height adjustment unit has at least one first threaded elongate member 120. In a first embodiment, a first threaded elongate member 120 is secured at the first section 104. In this embodiment, a first threaded receiving element 122 is arranged at the second section 106 in mating engagement with the threaded elongate member 120.
In a second embodiment, the first threaded elongate member 120 is secured at the second section 106. In this embodiment, a first threaded receiving element 122 is arranged at the first section 104 in mating engagement with the first threaded elongate member 120.
In other embodiments, the first height adjustment unit has a plurality of threaded receiving elements and a threaded elongated member.
High-precision height adjustment can be achieved using one first height adjustment unit.
One lift column position sensor, such as limit switches 130, 132, can be seen in fig. 1B. In addition, the lifting column may have other position sensors. The location sensor may be any device that permits location measurements. Thus, the position sensor may be any one of a capacitive sensor, a capacitive displacement sensor, an Addi-current sensor, an ultrasonic sensor, a grating sensor, a Hall effect sensor, an inductive non-contact position sensor, a laser Doppler vibrometer, a linear variable differential transducer, a multi-axis displacement sensor, a photodiode array, a piezoelectric sensor, a proximity sensor, a rotary encoder, a seismic displacement pickup sensor, or a string potentiometer. Preferably, however, the position sensor is an absolute position sensor, such as an absolute linear sensor.
In fig. 2A, the lifting column 606 is in a position where the second section 106 has been adjusted to a particular height position. From this height position it is possible to move the second section 106 downwards or upwards. Thus, the height position in the figure is an intermediate position.
Some parts of the height adjustment unit can be seen in fig. 2B. In this embodiment, the height adjustment unit has a first threaded receiving element 122 and a first threaded elongate member 120. The first threaded receiving element 122 may be a nut, a nut-shaped element, or an elongated hollow rod having internal threads, and the first threaded elongated member 120 may be one or more rods having external threads. In this embodiment, first threaded receiving member 122 is secured to first section 104 with a bracket 210. In this embodiment, the height adjustment is performed by actuating the rotational movement of the first threaded elongate member 120 with a motor. The motor may be any type of motor, but is preferably an electric motor, such as a Permanent Magnet Direct Current (PMDC) motor or a brushless direct current (BLDC) motor. Other motors that can be used are alternating current motors or direct current motors, such as induction motors, wound-rotor motors, linear motors or stepper motors.
In another embodiment, the first threaded elongate member 120 may be fixed in a rotational direction and the height adjustment is performed by actuating rotational movement of the first threaded receiving element 122 with a motor, preferably an electric motor, such as a Permanent Magnet Direct Current (PMDC) motor or a brushless direct current (BLDC) motor.
Fig. 2C shows one position sensor of the lifting column. The position sensor in this figure is a limit switch 130. However, other types of position sensors may be used. Each position sensor gives an indication, preferably an electrical signal, which can be converted into a position and/or a height of the second section 106 and/or the column 606.
Fig. 3A shows the lifting column with the section, with the movable second section 106 in its minimum extended position and the connecting section 608 in its uppermost position. This is the preferred position of the lifting column during transport of the mobile X-ray device 600, since the visibility is increased by having the column in a position as low as possible and since the mobile X-ray device 600 is put in a size as compact as possible by positioning the arm 610 on top of the base 602 during transport.
The connecting element 608 is connected to the second section 106 and is located radially outside the movable second section 106. Since the connecting section 608 is radially movable in one vertical direction outside the second section 106, the arm 610 attached to the connecting element 608 and the operational height range of the image capture extend towards a very low position, thus allowing image capture at a very low position.
The connecting section 608 has an inner part connected to the movable second section 106 and an outer part connected to the telescopic arm 610. The outer part is horizontally rotatable around the inner part. Thus, the arm 610 can be rotated to an appropriate position and high-precision, quick and easy rotation of the arm 610 can be obtained.
Fig. 4A is another view of a lifting column having a section. In this figure, the movable second section 106 is in its minimum extended position, i.e. in the lowest position. Likewise, the connecting section 608 is in its lowest position. Thus, with sections in these positions, the reach of an X-ray tube attached to the arm 610 (which is attached to the column 606 by a connecting section 608) is extended to very low positions close to the floor.
The connecting section 608, which is located radially outside the second section 106, can be moved around the second section 106 in one rotational direction. Thus, the arm 610 attached to the connecting section 608 may be rotated to an appropriate position for capturing an X-ray image. Furthermore, the connecting section 608 is movable in one vertical direction along the second section 106.
From fig. 4B can be seen some parts of a second height adjustment unit adapted for adjusting the height of the connecting section 608. In this embodiment, the second height adjustment unit has a second threaded receiving element 422 and a second threaded elongate member 420. The second threaded receiving element 422 may be a nut, a nut-shaped element or an elongated hollow rod with internal threads and the second threaded elongated member 420 may be a rod with external threads. In this embodiment, the second threaded receiving element 422 is fixed to the connecting section 608 in one rotational direction or in all directions. A second threaded elongate member 420 is positioned outside of the second section 106 and attached to the second section 106 at the bottom and top. For example, the second threaded elongate member 420 has a first end and an opposite second end. Further, a second threaded elongate member 420 is positioned external to the second section 106 and parallel to the second section 106. Thus, a first end of the second threaded elongate member 420 is positioned at a first end of the second section 106 and a second end of the second threaded elongate member 420 is positioned at a second end of the second section 106.
Alternatively, the threaded elongate member 420 can be positioned inside the second section 106, for example, if a slot is present in the second section 106 and/or the second section 106 can serve as a cover for the threaded elongate member 420.
In this embodiment, the height adjustment is performed by actuating the rotational movement of the second threaded elongate member 420 with a motor. The motor may be any type of motor, but is preferably an electric motor, such as a Permanent Magnet Direct Current (PMDC) motor or a brushless direct current (BLDC) motor. Other motors that can be used are alternating current motors or direct current motors, such as induction motors, wound-rotor motors, linear motors or stepper motors. In this embodiment, the second threaded receiving element 422 is arranged at and fixed to the connecting section 608. The second threaded receiving element matingly engages the threaded elongate member 420.
In another embodiment, the second threaded elongate member 420 may be fixed in a rotational direction and the height adjustment is performed by actuating the rotational movement of the second threaded receiving element 422 with a motor, preferably an electric motor, such as a Permanent Magnet Direct Current (PMDC) motor or a brushless direct current (BLDC) motor. The motor is preferably positioned inside the movable second section 106. In this embodiment, the second threaded elongate member 120 is secured at the connection section 608. Further, in this embodiment, a second threaded receiving element 122 is arranged at the second section 106, matingly engaged with the second threaded elongate member 420.
By using one first height adjustment unit and one second height adjustment unit, the height adjustment is split between adjusting the height of the second section 106 and adjusting the height of the connecting section 608. Thus, faster height adjustment and/or height adjustment with higher accuracy may be achieved.
A control unit may be used to calculate a first height adjustment, a second height adjustment and/or a total height adjustment. The calculation of these quantities may be based on a measured existing height of the connecting element 608 and/or the second section 106. The calculations may also be based on a reference or desired value that may be preset or provided by the user. The control unit may also be used to control a second actuator (e.g., a second motor) to cause the second height adjustment unit to move the connecting section 608 to a height based on a second height adjustment. In addition, the control unit may be used to control a first actuator (e.g., a first motor) to cause the first height adjustment unit to move the second section 106 to a height based on a first height adjustment. This can improve the accuracy and/or speed of height adjustment. With this arrangement, it is also possible to operate and move the connecting section 608 in an opposite direction as the movable second section 106 moves. This will be the case when one of the first and second height adjustments is negative and the other of the first and second height adjustments is positive.
Further, the first actuator or motor may be fixed to the base. The first actuator or motor may be located at a distance from the lifting column 606. Alternatively, the first actuator or motor may be connected to the first height adjustment unit by a chain, cable or belt. Thus, space within the post 606 is freed and can be used for other purposes. Furthermore, the post may be made smaller, i.e. have a smaller circumference or cross-section. Additionally, the center of gravity may be made lower by having the motor outside of column 606 rather than inside column 606. Thus, the weight can be reduced.
One limit switch 130 of the lifting column 606 can be seen in fig. 4C. In addition, the lifting column 606 may also have other position sensors. In this figure, the movable second section 106 is in its minimum extended position and the connecting section 608 is in its lowest position. Since the connecting section 608 is in its lowest position, it should not be able to move lower. This can be ensured by having some kind of stop plate or limit switch 130, 132 which ensures that the connecting section 608 cannot be moved beyond a lowermost and/or uppermost position. Alternatively, or in addition, the connection section 608 may be controlled to move only within a certain movement range and to automatically stop when the position measured with the position sensor (not shown) reaches a minimum or maximum allowed value. This control can be performed by means of a control unit which sends signals to the movement actuator. The movement of the second section 106 may be controlled in the same manner or a similar manner. Control of the movement of the second section 106 may then utilize information retrieved from these position sensors. Further, the second threaded elongate member and the first threaded elongate member may have self-braking characteristics.
As can be seen from fig. 5A and 5B, the first threaded elongate member 120 has a first end and an opposite second end. The first threaded elongate member 120 is positioned inside the first section 104 such that a first end of the first threaded elongate member 120 is positioned at a first end of the first section 104 and a second end of the first threaded elongate member 120 is positioned at a second end of the first section 104. In this embodiment, a u-shaped profile is attached to the second section 106 and positioned inside the second section 106. Furthermore, a first threaded receiving element 122 is fixed to the u-profile. The use of a u-shaped profile increases the stability and avoids wobbling of the first threaded elongated member 120 and thus increases the accuracy, reliability, safety and lifetime of the threaded elongated member 120, the first height adjustment unit and the system.
Alternatively, the first threaded elongate member 120 is positioned inside the second section 106 such that a first end of the first threaded elongate member 120 is positioned at a first end of the second section 106 and a second end of the first threaded elongate member 120 is positioned at a second end of the second section 106. In this embodiment, a u-shaped profile is attached to the first section 104 and positioned inside the first section. Furthermore, a first threaded receiving element 122 is fixed to the u-profile.
In one embodiment, the pitch or lead of the internal threads of second threaded receiving element 422 and the external threads of second threaded elongate member 420 is greater than the pitch or lead of the internal threads of first threaded receiving element 122 and the external threads of first threaded elongate member 120, for example by a factor of 2. Thus, the movable second section can be height-quickly adjustable and the connecting section can be used for high precision alignment.
Furthermore, the second section 106 and/or the first section 104 may comprise four complete walls arranged in the form of a rectangle or square in cross-section. It is possible to make the walls without any slots and therefore to make the walls thinner than if slots were already present. The weight of the post 606 may thus be reduced and/or stability improved. Alternatively, at least one of the walls may have at least one slot.
Additionally, the lifting column 606 can be operated without a counterweight. This allows a compact size during transport and thus allows the use of a smaller vehicle, such as a van for transport. Cheaper transportation and lower fuel consumption can thus be achieved.
In one embodiment, the overlap of the second section 106 and the first section 104 is optimal and within 10-20cm, and preferably within 15-17cm, when the post 606 is set to an uppermost position.
In another embodiment, the ratio between the overlap of the second section 106 and the first section 104 and the maximum height above the floor of the post 606 is below 0.1 and preferably below 0.075 when the post 606 is set to an uppermost position.
In yet another embodiment, the length of the second section 106 and the length of the first section 104 are selected such that the span between the lowest possible position and the highest possible position of the lifting column 606 is optimized and is at least 1.5m, and preferably at least 1.7 m.
Fig. 7 illustrates some steps of a method 700 of controlling the height of the lift pins 606. As can be seen from this figure, the height of a movable second section 106 of the lifting column 606 is controlled 706 using a first actuator, such as a first motor, for example a Permanent Magnet Direct Current (PMDC) motor or a brushless direct current (BLDC) motor. A first control signal is sent 704 from a control unit (which has received 702 information from the position sensor) to the first actuator. The first actuator actuates rotational movement of a first threaded receiving element 122 or a first threaded elongate member 120 of a first height adjustment unit. Thus, the actuator actuates the height adjustment of the second section 106.
In addition, the height of a link section 608 of the lifting column 606 (which is preferably attached to a telescopic arm 610) is controlled 710 with a second actuator, such as a second electric motor, for example a Permanent Magnet Direct Current (PMDC) motor or a brushless direct current (BLDC) motor. A second control signal is sent 708 from a control unit (which has received 702 information from the position sensor) to the second actuator. The second actuator actuates rotational movement of a second threaded receiving element 422 or a second threaded elongate member 420 of a second height adjustment unit. Thus, the second actuator actuates the height adjustment of the connecting section 608.
In this way, quick and easy control of the height of the lifting column 606 can be achieved. In one embodiment, the height of the movable second section 106 and the height of the connecting section 608 are controlled simultaneously. Thus, the adjustment speed can be increased.
Fig. 8 shows some steps of a method 800 of preparing a mobile X-ray device 600 for transport. In 802, controlling the height of a movable second section of a lifting column at a lowest possible position is performed using a first actuator, such as a first motor, e.g., a Permanent Magnet Direct Current (PMDC) motor or a brushless direct current (BLDC) motor. A first control signal is sent from a control unit (which has received information from the position sensor) to the first actuator. The first actuator actuates rotational movement of a first threaded receiving element 122 or a first threaded elongate member 120 of a first height adjustment unit. Thus, the actuator actuates the height adjustment of the second section 106 such that the second section 106 reaches the lowest possible position.
Further, in 804, controlling the height of a connecting section 608 of the lifting column 606 (which includes an outer part 332 and an inner part 330 attached to the telescopic arm 610) at a highest possible position is performed using a second actuator, such as a second electric motor, i.e. a Permanent Magnet Direct Current (PMDC) motor or a brushless direct current (BLDC) motor. A second control signal is sent from a control unit (which has received information from the position sensor) to the second actuator. The second actuator actuates rotational movement of a second threaded receiving element 422 or a second threaded elongate member 420 of a second height adjustment unit. Thus, the second actuator actuates the height adjustment of the connecting section 608 such that the connecting section 608 reaches a highest possible position.
Additionally, at 806, horizontal rotation of the outer part 332 about the inner part 330 is performed until the telescoping arm 610 of the device is positioned on top of one of the bases 602 of the device. Optionally, at 808, height control of the connecting section 608 is performed by lowering the connecting section 608 until the arm 610 is positioned in a locked position (e.g., a hollow space of the base 602). Using this method allows a compact size during transport. Furthermore, the mobile X-ray device can be easily transported due to, for example, compact size and increased visibility.
As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless expressly stated otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. Further, "connected to" or "coupled to" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. The disclosure has been described above with reference to specific embodiments. However, other embodiments than the above are equally possible within the scope of the disclosure. Different method steps or a different order thereof than those described above may be provided within the scope of the present disclosure. The different features and steps of the disclosure may be combined in other combinations than those described. The scope of the present disclosure is limited only by the appended patent claims.
Claims (15)
1. A lifting column for a mobile X-ray apparatus (600), the column (606) preferably being rotationally fixed relative to a base (602) of the X-ray apparatus (600), and
the post (606) has a plurality of sections, including:
a first section (104) having a first end and an opposite second end, arranged at said base (602) with said first end, and
a second section (106) having a first end and an opposite second end;
wherein the second section (106) is arranged at its first end with an overlap of the second end of the first section and is movable relative to the first section (104); and is
Said column (606) further comprises a first height adjustment unit comprising:
a first threaded elongate member (120) secured at one of the first and second sections (104,106), an
A first threaded receiving element (122) arranged at the other of said first and second sections (104,106) matingly engaged with said threaded elongate member (120) for height adjustment of said post (606).
2. A lifting column according to claim 1, further comprising a connecting section for attaching a telescopic arm to said lifting column, said connecting section being located radially outside said movable second section and connected thereto.
3. A lifting column according to claim 2, wherein the connecting section is movable in one vertical direction outside the movable section.
4. A lifting column according to claim 2 or 3, wherein the connecting section comprises:
an external part connected to the telescopic arm, an
An inner part connected to the movable second section; and is
Wherein the outer part is horizontally rotatable around the inner part.
5. A lifting column according to claim 3 or 4, wherein during transport of the device the movable second section is positioned in its lowest position and the connecting section is positioned at the top of the movable second section.
6. A lifting column according to any of claims 2-5, further comprising a second height adjustment unit comprising:
a second threaded receiving element arranged at one of said second section and said connecting section, and
at least one second threaded elongate member secured at the other of the second section and the connecting section in mating engagement with the second threaded receiving element; and is
Wherein the first height adjustment unit is adapted to adjust a height of the movable second section and the second height adjustment unit is adapted to adjust a height of the connecting section.
7. The lifting column according to claim 6, wherein the height adjustment performed by said first height adjustment unit is actuated by a first motor (such as a Permanent Magnet Direct Current (PMDC) motor or a brushless direct current (BLDC) motor) connected to one of said first threaded receiving element and said first threaded elongated member, and
the height adjustment performed by said second height adjustment unit is actuated by a second motor, such as a Permanent Magnet Direct Current (PMDC) motor or a brushless direct current (BLDC) motor, preferably positioned inside said movable second section and connected to one of said second threaded receiving element and said second threaded elongated member.
8. The lifting column of any of claims 6-7, wherein the second threaded elongate member has a first end and an opposite second end, and wherein the second threaded elongate member is positioned outside of and parallel to the second section such that the first end of the second threaded elongate member is positioned at the first end of the second section and the second end of the second threaded elongate member is positioned at the second end of the second section.
9. The lifting column of claim 8, wherein the first threaded elongate member has a first end and an opposite second end, and wherein the first threaded elongate member is positioned inside one of the first and second sections such that the first end of the first threaded elongate member is positioned at the first end of the first or second section and the second end of the first threaded elongate member is positioned at the second end of the first or second section.
10. The lifting column of claim 9, wherein a u-shaped profile is attached to and positioned inside one of the first and second sections, and wherein the first threaded receiving element is secured to the u-shaped profile.
11. The lifting column of any of claims 7-10, wherein at least one of the second threaded elongate member and the first threaded elongate member has a self-braking characteristic.
12. Lifting column according to any one of claims 1-11, wherein the base is provided with a recess, and wherein the first end of the first section is fixed to the base at the recess and recessed in the recess.
13. A method of controlling the height of a lifting column of any of claims 1-12 comprising:
information is received from the position sensor or sensors,
a first control signal is sent to a first motor,
controlling the height of a movable second section of the lifting column with the first motor by actuating rotational movement of a first threaded receiving element or a first threaded elongate member of a first height adjustment unit,
a second control signal is sent to a second motor,
controlling the height of a connecting section of the lifting column attached to a telescopic arm by actuating the rotational movement of a second threaded receiving element or a second threaded elongate member of a second height adjustment unit with a second motor.
14. The method of claim 13, wherein the height of the movable second section and the height of the connecting section are controlled simultaneously.
15. A method of preparing a mobile X-ray apparatus for transport comprising a lifting column according to any of claims 1-12, comprising:
controlling the height of a movable second section of a lifting column at a lowest possible position by actuating rotational movement of a first threaded receiving element or a first threaded elongate member of a first height adjustment unit with a first motor,
controlling the height of a connecting section of the lifting column comprising an outer part and an inner part attached to an arm in a highest possible position by actuating the rotational movement of a second threaded receiving element or a second threaded elongated member of a second height adjustment unit with a second motor,
rotating the outer part horizontally around the inner part until the arm is positioned on top of a base of the device, and
the height of the connecting section is optionally controlled by lowering the connecting section until the arm is positioned in a locked position (e.g., a hollow space of the base).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110654048.4A CN113582065A (en) | 2014-05-19 | 2014-05-19 | Lifting column and method for controlling the height thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/SE2014/050611 WO2014185857A1 (en) | 2013-05-14 | 2014-05-19 | Elevating column and method of controlling elevation thereof |
| CN201480026975.XA CN105451654A (en) | 2014-05-19 | 2014-05-19 | Elevating column and method of controlling elevation thereof |
| CN202110654048.4A CN113582065A (en) | 2014-05-19 | 2014-05-19 | Lifting column and method for controlling the height thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480026975.XA Division CN105451654A (en) | 2014-05-19 | 2014-05-19 | Elevating column and method of controlling elevation thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113582065A true CN113582065A (en) | 2021-11-02 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110654048.4A Pending CN113582065A (en) | 2014-05-19 | 2014-05-19 | Lifting column and method for controlling the height thereof |
| CN201480026975.XA Pending CN105451654A (en) | 2014-05-19 | 2014-05-19 | Elevating column and method of controlling elevation thereof |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480026975.XA Pending CN105451654A (en) | 2014-05-19 | 2014-05-19 | Elevating column and method of controlling elevation thereof |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6441316B2 (en) |
| CN (2) | CN113582065A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10813608B2 (en) * | 2018-10-02 | 2020-10-27 | General Electric Company | Method and systems for a mobile imaging system |
| KR102487236B1 (en) * | 2020-10-15 | 2023-01-11 | (주)신영포엠 | Stand for x-ray device with straight-type arm |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5936200U (en) * | 1982-08-30 | 1984-03-07 | ミカサ株式会社 | Extending and retracting device for pillars in stand-type X-ray equipment |
| FI892546A (en) * | 1989-05-24 | 1990-11-25 | Orion Yhtymae Oy | ROENTGENAPPARAT. |
| US5642392A (en) * | 1994-04-12 | 1997-06-24 | J. Morita Manufacturing Corporation | Medical radiographic apparatus and patient's head fixing device |
| JP3658010B2 (en) * | 1994-04-13 | 2005-06-08 | 株式会社モリタ製作所 | Medical X-ray equipment |
| US7469032B2 (en) * | 2005-04-11 | 2008-12-23 | Gendex Corporation | Structural and patient positioning features of an x-ray system |
| US8568028B2 (en) * | 2010-04-13 | 2013-10-29 | Carestream Health, Inc. | Mobile radiography unit having collapsible support column |
| US8672543B2 (en) * | 2010-04-13 | 2014-03-18 | Carestream Health, Inc. | Counterweight for mobile x-ray device |
| EP2803319B1 (en) * | 2013-05-14 | 2022-03-09 | Solutions for tomorrow AB | Elevating column and method of controlling elevation thereof |
-
2014
- 2014-05-19 JP JP2016513902A patent/JP6441316B2/en active Active
- 2014-05-19 CN CN202110654048.4A patent/CN113582065A/en active Pending
- 2014-05-19 CN CN201480026975.XA patent/CN105451654A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN105451654A (en) | 2016-03-30 |
| JP6441316B2 (en) | 2018-12-19 |
| JP2016523108A (en) | 2016-08-08 |
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