CN114992435A - Lifting mechanism for radiation imaging system and radiation imaging system - Google Patents

Lifting mechanism for radiation imaging system and radiation imaging system Download PDF

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Publication number
CN114992435A
CN114992435A CN202210173517.5A CN202210173517A CN114992435A CN 114992435 A CN114992435 A CN 114992435A CN 202210173517 A CN202210173517 A CN 202210173517A CN 114992435 A CN114992435 A CN 114992435A
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CN
China
Prior art keywords
assembly
rigid chain
plate
bottom plate
fixedly connected
Prior art date
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Pending
Application number
CN202210173517.5A
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Chinese (zh)
Inventor
李俊江
陈志强
夏炎
刘雄辉
牛廷伟
宋晨光
冀利岗
马洪祥
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BEIJING GUHONG TECHNOLOGY CO LTD
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BEIJING GUHONG TECHNOLOGY CO LTD
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Priority to CN202210173517.5A priority Critical patent/CN114992435A/en
Publication of CN114992435A publication Critical patent/CN114992435A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/043—Allowing translations
    • F16M11/046—Allowing translations adapted to upward-downward translation movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/12—Hauling- or hoisting-chains so called ornamental chains
    • F16G13/16—Hauling- or hoisting-chains so called ornamental chains with arrangements for holding electric cables, hoses, or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/42—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

The embodiment of the present disclosure discloses a lifting mechanism for a radiation imaging system and a radiation imaging system, wherein the lifting mechanism comprises: the carrying platform defines a containing cavity and comprises a top plate and a bottom plate which are oppositely arranged in the vertical direction; the rigid chain assembly can be selectively contained in the containing cavity, one end of the rigid chain assembly is fixedly connected with the top plate, and the other end of the rigid chain assembly is fixedly connected with the bottom plate; the scissors fork assembly is selectively contained in the containing cavity and is arranged on one side of the rigid chain assembly, one end of the scissors fork assembly is connected with the top plate, the other end of the scissors fork assembly is connected with the bottom plate, and the rigid chain assembly and the scissors fork assembly jointly support the top plate to ascend or descend under the driving of the rigid chain assembly. Scissor type elevating system has higher stability, uses with rigid chain subassembly collocation, has guaranteed under the condition of the same stroke, has promoted the security of using, realizes accurate regulation and control, greatly reduces lift platform's weight.

Description

Lifting mechanism for radiation imaging system and radiation imaging system
Technical Field
The embodiment of the disclosure relates to the technical field of security inspection, in particular to a lifting mechanism for a radiation imaging system and the radiation imaging system.
Background
In the radiation imaging process, the radiation source and the detector are required to do synchronous lifting motion, a columnar lifting structure is adopted for a heavy-weight large-tonnage part in practical application, and an upright column needs to have a large cross section so as to improve the stability in the lifting process; in addition, the ray source and the detector need higher precision in the lifting process, and the stand column is independently adopted to realize lifting, so that the actual requirement cannot be met.
Disclosure of Invention
Embodiments of the present disclosure are directed to solving at least one of the technical problems occurring in the prior art.
For example, the embodiment of the present disclosure provides a lifting mechanism for a radiation imaging system, which adopts a mode of combining a scissor assembly and a rigid chain assembly, thereby ensuring the safety of use and realizing accurate regulation and control.
To this end, a first aspect of embodiments of the present disclosure provides a lifting mechanism for a radiation imaging system, including: a carrier defining a receiving cavity, the carrier comprising: the top plate and the bottom plate are arranged oppositely in the vertical direction; the rigid chain assembly can be selectively contained in the containing cavity, one end of the rigid chain assembly is fixedly connected with the top plate, and the other end of the rigid chain assembly is fixedly connected with the bottom plate; the scissors fork assembly is selectively contained in the containing cavity and is arranged on one side of the rigid chain assembly, one end of the scissors fork assembly is connected with the top plate, the other end of the scissors fork assembly is connected with the bottom plate, and the rigid chain assembly and the scissors fork assembly jointly support at least part of the top plate to ascend or descend under the driving of the rigid chain assembly.
According to the elevating system of the embodiment of this disclosure, scissors formula elevating system has higher stability, uses with rigidity chain subassembly collocation, has guaranteed under the condition of same stroke, has promoted the security of using, can also realize accurate regulation and control, compares with conventional column elevation structure, has greatly reduced lift platform's weight, increases the convenient transportation that changes the place of moving platform.
Further, the top plate includes: the fixed plate and the movable plate are arranged side by side, one end of the rigid chain assembly and one end of the scissor fork assembly are both connected with the movable plate, and the rigid chain assembly and the scissor fork assembly support the movable plate to ascend or descend under the driving of the rigid chain assembly.
Further, the rigid chain assembly comprises: one end of the rigid chain body is fixedly connected with the movable plate, and the other end of the rigid chain body is fixedly connected with the bottom plate; and the driving motor is arranged on the bottom plate, the rigid chain body is meshed with a chain wheel of the driving motor, and the driving motor drives the rigid chain body to stretch so as to enable the moving plate to ascend or descend.
Further, the rigid chain body comprises: the unit bodies are arranged in the vertical direction, a connecting plate is arranged between every two adjacent unit bodies, and the connecting plate fixes the two adjacent unit bodies.
Furthermore, the connecting plates are arranged in a plurality of numbers, the connecting plates are circumferentially arranged along the cross sections of the unit bodies and are fixedly connected with the adjacent two unit bodies.
Furthermore, the connecting plate is provided with at least two first via holes, and the fixing piece penetrates through the first via holes to fix the two adjacent unit bodies.
Further, a driving pin is further arranged on the rigid chain body, and the driving motor drives the driving pin so that the moving plate ascends or descends.
Further, the scissor fork assembly comprises: the scissors fork comprises at least two scissors fork bodies, wherein the scissors fork bodies are arranged in the width direction of the movable plate, one end of each scissors fork body is connected with the movable plate, and the other end of each scissors fork body is connected with the bottom plate; and the supporting frames are arranged between the at least two scissor fork bodies to support the at least two scissor fork bodies.
Further, the scissors fork body comprises a first supporting rod and a second supporting rod, and the first supporting rod is connected with the second supporting rod in a pivoting mode through a pin shaft.
Further, the first strut includes: one end of the first upper supporting rod is fixedly connected with the moving plate, and one end of the first lower supporting rod is fixedly connected with the bottom plate; the second strut includes: the movable plate is connected with the bottom plate in a sliding mode.
Furthermore, the other end of the first upper supporting rod, the other end of the first lower supporting rod, the other end of the second upper supporting rod and the other end of the second lower supporting rod are in pivot connection through the pin shaft.
A second aspect of embodiments of the present disclosure provides a radiation imaging system including: the ray source assembly and the detector assembly are respectively arranged on two sides of the bearing assembly, and when the ray source assembly emits rays, the detector assembly is used for receiving the rays; the lifting mechanism, wherein the moving plate is fixedly connected with the ray source assembly or the detector assembly, and the lifting mechanism drives the ray source assembly or the detector assembly to ascend or descend.
Further, still include: and one end of the drag chain is fixed on the movable plate, the other end of the drag chain is fixed on the fixed plate, and when the movable plate ascends or descends, the movable plate drives one end of the drag chain to move.
Furthermore, a connecting wire harness is arranged on the ray source assembly and the detector assembly and wound on the drag chain to move along with the drag chain.
Additional aspects and advantages of embodiments of the present disclosure will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the present disclosure.
Drawings
Other objects and advantages of the present disclosure will become apparent from the following description of the disclosure, which is made with reference to the accompanying drawings, and can assist in a comprehensive understanding of the disclosure.
FIG. 1 illustrates a stowed position of a lifting mechanism with a radiation source assembly according to an embodiment of the present disclosure;
fig. 2 illustrates an operating state of a lifting mechanism with a radiation source assembly according to an embodiment of the present disclosure;
FIG. 3 is a stowed position of a lift mechanism with a probe assembly installed in an embodiment of the present disclosure;
FIG. 4 illustrates the operation of a lift mechanism incorporating a probe assembly according to an embodiment of the present disclosure;
FIG. 5 is an elevation view of an operational state of a lift mechanism incorporating a probe assembly according to an embodiment of the present disclosure.
It is noted that, for the sake of clarity, structures or regions may be exaggerated or reduced in size in the drawings used to describe embodiments of the present disclosure, i.e., the drawings are not drawn to scale.
Reference numerals are as follows:
the lifting mechanism (100) is provided with a lifting mechanism,
the dimensions of the carrier 10, the receiving cavity 101,
the movement of the fixed plate 11, the moving plate 12,
a rigid chain component 20, a rigid chain body 21, a driving pin 22, a unit body 23,
a scissor fork assembly 30, a scissor fork body 31, a supporting frame 32, a pin shaft 33,
the radiation source assembly 200, the detector assembly 300,
a drag chain 400 and a wire slot 401.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without inventive step, are within the scope of protection of the disclosure.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.
In this document, unless specifically stated otherwise, directional terms such as "upper", "lower", "left", "right", "inside", "outside", and the like are used to indicate orientations or positional relationships based on the orientation shown in the drawings, merely for convenience in describing the present disclosure, and do not indicate or imply that the referenced device, element, or component must have a particular orientation, be constructed or operated in a particular orientation. It should be understood that when the absolute positions of the described objects are changed, the relative positional relationships they represent may also change accordingly. Accordingly, these directional terms should not be construed as limiting the present disclosure.
In a radiation imaging system, a ray beam which is emitted by a ray source, is collimated and has certain energy penetrates through an object to be detected, projection energy received by a detector is different according to different attenuation coefficients of each volume element in each transmission direction, and a scanning image is obtained through a series of signal conversion.
In the radiation imaging process, a ray source and a detector are required to do synchronous precise lifting motion, a columnar lifting structure is adopted for a heavy-weight large-tonnage part in practical application, and a stand column needs to have a large cross section so as to improve the stability in the lifting process; in addition, the ray source and the detector need higher precision in the lifting process, and the stand column is independently adopted to realize lifting, so that the actual requirement cannot be met.
In order to solve the above problem, an embodiment of the present disclosure provides a lifting mechanism for a radiation imaging system, which has higher stability, can be accommodated in a carrier, has a small overall weight, and is convenient for being used in a transfer field.
It should be noted that the embodiments of the present disclosure are applicable to application scenarios such as CT scanning (computed tomography), DR scanning (digital X-ray scanning), etc., and the type of scanning is not limited herein.
For example, in CT scanning, a radiation beam emitted by a radiation source, collimated, and having a certain energy passes through an object to be detected, and projection energy received by a detector is different according to the difference of attenuation coefficients of volume elements in each transmission direction, and a scanning image is obtained through a series of signal conversion.
For example, in a DR scan, CCD imaging is used, and a post-imaging process is directly irradiated with X-rays, resulting in an overlapping image of the object through which the X-rays pass in the direction of irradiation.
The large workpiece in the embodiment of the disclosure can be a large device to be detected in various fields, such as an arrow body in the field of aerospace, or a large pipeline in the field of pipeline devices. The large workpiece is a large cylinder or a nearly cylinder structure. It will be appreciated that other configurations of large workpieces, such as cubic structures, pyramidal structures, etc., may be used in accordance with the teachings of the present technique.
A lift mechanism 100 for a radiation imaging system according to an embodiment of the present disclosure is described below with reference to fig. 1-5.
As shown in fig. 1-5, a lift mechanism 100 for a radiation imaging system, according to one embodiment of the present disclosure, includes: carrier 10, rigid chain assembly 20, and scissor fork assembly 30.
Specifically, the carrier 10 defines an accommodating chamber 101, and the carrier 10 includes: the top plate and the bottom plate are arranged oppositely in the vertical direction; the rigid chain component 20 can be selectively contained in the containing cavity 101, one end of the rigid chain component 20 is fixedly connected with the top plate, and the other end of the rigid chain component 20 is fixedly connected with the bottom plate; the scissors assembly 30 is selectively received in the receiving cavity 101 and disposed at one side of the rigid chain assembly 20, one end of the scissors assembly 30 is connected with the top plate, and the other end of the scissors assembly 30 is connected with the bottom plate, wherein the rigid chain assembly 20 and the scissors assembly 30 jointly support at least part of the top plate to ascend or descend under the driving of the rigid chain assembly 20.
The rigid chain component 20 and the scissor fork component 30 are fixedly mounted on the carrier 10, and a containing cavity 101 is defined in the carrier 10, wherein the containing cavity 101 is provided with a top plate and a bottom plate, the top plate and the bottom plate are opposite, and the rigid chain component 20 and the scissor fork component 30 are arranged between the top plate and the bottom plate.
The bottom plate is provided with a wheel set which can enable the carrier 10 to move so that the lifting mechanism 100 can realize integral movement, the bottom plate can adopt a high-strength section bar integral welding type, and after welding and processing, the precision requirement of the lifting mechanism 100 during leveling can be ensured; the top plate may be lifted away from or closer to the bottom plate by the rigid chain assembly 20 and the scissor fork assembly 30. As shown in fig. 2 and 4, in the position of the lifting mechanism 100 during operation, when the top plate moves upward under the lifting action of the rigid chain assembly 20 and the scissor fork assembly 30, one end of the rigid chain assembly 20 and one end of the scissor fork assembly 30 extend out of the accommodating cavity 101 to jack up the top plate, so that the top plate gradually moves away from the bottom plate; as shown in fig. 1 and 3, in order to obtain a structural view that the rigid chain assembly 20 and the scissors fork assembly 30 are completely placed in the accommodating cavity 101 after the lifting mechanism 100 is stored, when the top plate gradually approaches the bottom plate under the lifting action of the rigid chain assembly 20 and the scissors fork assembly 30, one end of the rigid chain assembly 20 and one end of the scissors fork assembly 30 move downward until they are completely retracted into the accommodating cavity 101.
Of course, the carrier 10 may further include a plurality of side plates, the plurality of side plates are connected end to form the accommodating cavity 101 with the top plate and the bottom plate, wherein the plurality of side plates are fixedly connected to the bottom plate, the plurality of side plates contact the top plate, and the top plate may be completely placed on one end surrounded by the plurality of side plates under the force applied by the non-rigid chain assembly 20 and the scissor fork assembly 30.
In one embodiment, the platform 10 is configured as an AGV platform having omnidirectional travel characteristics that may allow for forward and backward travel, side-to-side lateral movement, in-place rotation, diagonal travel, curvilinear movement, and the like.
The large workpiece to be detected has a height requirement, and the rigid chain assembly 20 and the scissor fork assembly 30 have the capability of being lifted to the same height as the large workpiece or even higher, and because the rigid chain assembly 20 and the scissor fork assembly 30 of the embodiment of the disclosure can be completely accommodated in the carrying platform 10, the problems that the lifting mechanism 100 with a too small door opening cannot pass through and the building space is not high enough and cannot operate are not considered, so that the building cost can be reduced. Further, the stage 10 includes a movable wheel set, and can be easily transported to another place for work after the lifting mechanism 100 is stored.
The rigid chain component 20 is used as a main driving device to lift the supporting top plate, and the scissor fork component 30 is used as a follow-up device to play a role of auxiliary supporting the top plate. That is, the rigid chain assembly 20 itself serves as a main support and the scissor fork assembly 30 serves as an auxiliary support, by virtue of the driving of the rigid chain assembly 20, to support the top plate to be raised or lowered. Because the radiation source assembly 200 or the detector assembly 300 fixedly mounted on the top plate are heavier, the top plate is supported to ascend or descend through the rigid chain assembly 20 and the scissor fork assembly 30, the stability and the safety of the lifting mechanism 100 are improved, the bearing strength of the top plate is increased, the shaking amplitude is reduced in the rising or lowering process, and accurate regulation and control are realized.
According to the elevating system 100 of the embodiment of the present disclosure, scissors type elevating system 100 has higher stability, and is used in collocation with rigid chain component 20, has guaranteed under the condition of the same stroke, has promoted the security of using, can also realize accurate regulation and control, compares with conventional column elevation structure, has greatly reduced lift platform's weight, increases the convenient transportation of changeing of moving platform.
According to one embodiment of the present disclosure, a top plate includes: a fixed plate 11 and a moving plate 12.
Specifically, the fixed plate 11 and the moving plate 12 are arranged side by side, one end of the rigid chain assembly 20 and one end of the scissor fork assembly 30 are both connected with the moving plate 12, and the rigid chain assembly 20 and the scissor fork assembly 30 support the moving plate 12 to ascend or descend under the driving of the rigid chain assembly 20.
The top plate is further subdivided and comprises a fixed plate 11 and a movable plate 12, the fixed plate 11 is fixedly connected with the side plates, and the movable plate 12 can ascend or descend under the driving of the rigid chain assembly 20.
According to one embodiment of the present disclosure, a rigid chain assembly 20, comprising: a rigid chain body 21 and a drive motor. The driving motor may drive the rigid chain body 21 to ascend or descend.
More specifically, one end of the rigid chain body 21 is fixedly connected with the moving plate 12, and the other end of the rigid chain body 21 is fixedly connected with the bottom plate; the driving motor is arranged on the bottom plate, the rigid chain body 21 is meshed with a chain wheel of the driving motor, and the driving motor drives the rigid chain body 21 to stretch and contract, so that the moving plate 12 ascends or descends.
An installation base for installing a driving motor is arranged on the bottom plate, one end of the rigid chain body 21 is fixed with the movable plate 12, the other end of the rigid chain body extends into the installation base and is meshed with a chain wheel of the driving motor, and the rigid chain body 21 conveys the rigid chain upwards or downwards under the action of the chain wheel so that the rigid chain drives the movable plate 12 to ascend or descend.
The upward or downward transport of the rigid chain can be achieved by changing the rotation direction of the driving motor, for example, when the driving motor rotates clockwise, the sprocket engages the rigid chain to transport the rigid chain upward, and when the driving motor rotates counterclockwise, the sprocket engages the rigid chain to transport the rigid chain downward.
According to one embodiment of the present disclosure, the rigid chain body 21 is a hollow structure including: the number of the unit bodies 23 is multiple, the multiple unit bodies 23 are arranged in the vertical direction, wherein a connecting plate is arranged between two adjacent unit bodies 23, and the connecting plate fixes the two adjacent unit bodies 23.
The rigid chain body 21 is formed by connecting a plurality of unit bodies 23 in a vertical direction in an arrayed manner, the two unit bodies 23 are fixed by a connecting plate, and in the process that the moving plate 12 ascends or descends, the unit bodies 23 are increased or decreased one by one under the action of the chain wheels, so that the ascending or descending height of the moving plate 12 can be accurately controlled, and the accuracy of the lifting mechanism 100 is improved.
According to one embodiment of the present disclosure, the connection plates are provided in plurality, and the plurality of connection plates are circumferentially arranged along the cross section of the unit bodies 23 and are fixedly connected to two adjacent unit bodies 23.
Because the moving plate 12 and the devices installed on the moving plate 12 are heavy, in order to prevent the two unit bodies 23 from being disconnected in the operation process of the lifting mechanism 100, a plurality of connecting plates can be installed at the connecting positions of the two unit bodies 23, and the number of the connecting plates is in direct proportion to the stability degree between the two unit bodies 23. The connection plate may be disposed on an outward peripheral wall of the unit body 23, or may be disposed on an inward peripheral wall of the unit body 23.
More specifically, the connecting plate is provided with at least two first through holes, and the fixing member passes through the first through holes to fix the two adjacent unit bodies 23.
First through holes are formed in the surfaces, attached to the unit bodies 23, of the connecting plates, at least two first through holes are formed, and corresponding holes of the first through holes are needed on the peripheral walls of the two adjacent unit bodies 23.
In one embodiment, two first via holes are disposed on the connection board, wherein one first via hole is disposed at a corresponding position of one unit body 23 of the two adjacent unit bodies 23, and the other first via hole is disposed at a corresponding position of the other unit body 23 of the two adjacent unit bodies 23.
According to an embodiment of the present disclosure, the rigid chain body 21 is further provided with a driving pin 22, and the driving motor drives the driving pin 22 to raise or lower the moving plate 12.
The driving pin 22 is arranged on the outer surface of the rigid chain body 21, the unit body 23 is provided with a through hole, the driving pin 22 penetrates through the through hole to be fixed on the unit body 23, and a chain wheel of the driving motor is meshed with the driving pin 22 to drive the driving pin 22, so that the rigid chain ascends or descends.
It should be noted that a plurality of rigid chain assemblies 20 may be included in one elevating mechanism 100, and the plurality of rigid chain assemblies 20 support the moving plate 12 to be raised or lowered.
As shown in fig. 5, two rigid chain assemblies 20 are respectively provided at two opposite corners of the moving plate 12 to push the moving plate 12 to be smoothly raised or lowered.
According to one embodiment of the disclosed embodiment, a scissor fork assembly 30, comprising: a scissor fork body 31 and a support bracket 32.
Specifically, at least two scissor bodies 31 are arranged in the width direction of the moving plate 12, one end of the scissor body 31 is connected with the moving plate 12, and the other end of the scissor body 31 is connected with the bottom plate; the supporting frame 32 is provided in plurality, and the plurality of supporting frames 32 are provided between the two scissor fork bodies 31 to support the two scissor fork bodies 31.
As shown in fig. 2 and 4, the two scissor bodies 31 are arranged side by side in the width direction of the moving plate 12, a plurality of support frames 32 are disposed between the two scissor bodies 31, two ends of each support frame 32 are respectively connected to the two scissor bodies 31, and in the process of extending and retracting the scissor bodies 31, the two scissor bodies 31 are prevented from being bent each other, and the support frames 32 enhance the strength of the scissor bodies 31 and increase the stability of the lifting mechanism 100.
One end of the scissor fork body 31 is connected with the moving plate 12, and one end of the scissor fork body comprises two connecting parts with the moving plate 12, wherein one connecting part is fixedly connected, and the other connecting part is in sliding connection; the other end of the scissor fork body 31 is connected with the bottom plate, the other end of the scissor fork body 31 comprises two joints with the bottom plate, one of the joints is fixedly connected with the bottom plate, the other joint is in sliding connection, one end of the scissor fork body is fixedly connected with the moving plate 12, the other end of the scissor fork body is vertically and correspondingly connected with the bottom plate, the other end of the scissor fork body is slidably connected with the moving plate 12, the other end of the scissor fork body is vertically and correspondingly connected with the bottom plate, namely, when the two scissor fork bodies 31 are arranged on the width direction of the moving plate 12 and the width direction of the bottom plate, only one side of one scissor fork body 31 can slide in the length direction of the moving plate 12 and the length direction of the bottom plate, the other side of the scissor fork body 31 is fixedly connected with the bottom plate.
In one embodiment, when the moving plate 12 is lifted upwards by the rigid chain, the scissor fork bodies 31 are pulled by the moving plate 12 to move upwards together, one side of the scissor fork bodies 31 in sliding connection is close to one side of the fixed connection, and the scissor fork bodies 31 are extended; when the rigid chain moves downwards, the scissor fork body 31 moves downwards together under the driving of the total weight of the moving plate 12 and the mounting device on the moving plate 12, one side of the scissor fork body 31 in sliding connection is far away from one side of the scissor fork body in fixed connection, and the scissor fork body 31 is shortened.
According to one embodiment of the disclosed embodiment, scissor fork body 31 comprises a first strut and a second strut pivotally connected by a pin 33.
With the concrete split of first branch and second branch, first branch includes: first upper strut and first lower strut, the second branch includes: a second upper strut and a second lower strut.
In one embodiment, one end of the first upper supporting rod is fixedly connected with the moving plate 12, and one end of the first lower supporting rod is fixedly connected with the bottom plate; one end of the second upper supporting rod is connected with the moving plate 12 in a sliding manner, and one end of the second lower supporting rod is connected with the bottom plate in a sliding manner.
In another embodiment, one end of the first upper supporting rod is fixedly connected with the moving plate 12, and one end of the first lower supporting rod is fixedly connected with the bottom plate; one end of the second upper supporting rod is connected with the moving plate 12 in a sliding manner, and one end of the second lower supporting rod is connected with the bottom plate in a sliding manner.
According to one embodiment of the present disclosure, the other end of the first upper strut, the other end of the first lower strut, the other end of the second upper strut, and the other end of the second lower strut are pivotally connected by a pin 33.
In the above two embodiments, the sliding connection end may be provided with a pulley, the length direction of the bottom plate and the length direction of the moving plate 12 are provided with a guide rail, and the pulley slides in the guide rail to extend and retract the scissor fork body 31.
A radiation imaging system according to an embodiment of the present disclosure includes: a radiation source assembly 200, a detector assembly 300, and the lift mechanism 100 described above.
The ray source assembly 200 and the detector assembly 300 are respectively arranged at two sides of the bearing assembly, and when the ray source assembly 200 emits rays, the detector assembly 300 is used for receiving the rays; the movable plate 12 is fixedly connected to the radiation source assembly 200 or the detector assembly 300, and the lifting mechanism 100 drives the radiation source assembly 200 or the detector assembly 300 to ascend or descend.
In the radiation imaging system, two lifting mechanisms 100 are required, namely a lifting mechanism 100 with a radiation source assembly 200 and a lifting mechanism 100 with a detector assembly 300, and the radiation source assembly 200 and the detector assembly 300 are both arranged on the moving plates 12 of the two lifting mechanisms 100 and are lifted or lowered under the action of the lifting mechanisms 100.
Under the action of the lifting mechanism 100, the degree of freedom in the vertical direction between the moving plate 12 and the bottom plate can be realized, and the state that the moving plate 12 is parallel to the bottom plate is maintained.
According to an embodiment of the disclosed embodiment, the radiation imaging system further includes: one end of the drag chain 400 is fixed on the movable plate 12, the other end of the drag chain 400 is fixed on the fixed plate 11, and when the movable plate 12 ascends or descends, the movable plate 12 drives one end of the drag chain 400 to move. Wherein, the radiation source assembly 200 and the detector assembly 300 are provided with connecting wire bundles, and the connecting wire bundles are wound on the drag chain 400 to move along with the drag chain 400.
Since the ray source assembly 200 and the detector assembly 300 both need to be connected with a wiring harness to supply power, the connection wiring harness needs to be long enough to be still connected with the socket during the operation of the lifting mechanism 100, but after the lifting mechanism 100 is stored, the connection wiring harness is piled up and easily damaged by kicking by passing machines or other people, or the connection wiring harness is wound when being used next time, so that the connection wiring harness needs to be stored reasonably.
In the embodiment of the present disclosure, a drag chain 400 is added to the lifting mechanism 100, and the drag chain 400 has an operating state and a storage state, and in the operating state, the drag chain 400 moves along with the moving plate 12 to be the same as the lifting height of the moving plate 12; in the stowed position, the tow chain 400 is automatically stacked into the wire slot 401 in the fixed panel 11 during lowering. The connecting wire harness is wound on the drag chain 400, the connecting wire harness can be actively conveyed in the ascending process of the moving plate 12, the connecting wire harness is automatically stored in the wire groove 401 in the descending process of the moving plate 12, the whole process does not need manual operation of workers, and the use process is convenient and fast.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the disclosure. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although a few embodiments of the present general inventive concept have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.

Claims (14)

1. A lift mechanism for a radiation imaging system, comprising:
a carrier defining a receiving cavity, the carrier comprising: the top plate and the bottom plate are arranged oppositely in the vertical direction;
the rigid chain assembly can be selectively contained in the containing cavity, one end of the rigid chain assembly is fixedly connected with the top plate, and the other end of the rigid chain assembly is fixedly connected with the bottom plate; and
a scissor fork assembly selectively received in the receiving cavity and disposed at one side of the rigid chain assembly, one end of the scissor fork assembly being connected to the top plate and the other end of the scissor fork assembly being connected to the bottom plate,
wherein the rigid chain assembly supports at least a partial raising or lowering of the top plate in cooperation with the scissor assembly upon actuation of the rigid chain assembly.
2. The lift mechanism of claim 1, wherein the top plate comprises: the movable plate is arranged side by side, one end of the rigid chain assembly and one end of the scissor fork assembly are both connected with the movable plate, and the rigid chain assembly and the scissor fork assembly support the movable plate to ascend or descend under the driving of the rigid chain assembly.
3. The lift mechanism of claim 2, wherein the rigid chain assembly comprises:
one end of the rigid chain body is fixedly connected with the movable plate, and the other end of the rigid chain body is fixedly connected with the bottom plate; and
the driving motor is arranged on the bottom plate, the rigid chain body is meshed with a chain wheel of the driving motor, and the driving motor drives the rigid chain body to stretch and retract so as to enable the moving plate to ascend or descend.
4. The lift mechanism of claim 3, wherein the rigid chain body comprises: the unit bodies are arranged in the vertical direction, a connecting plate is arranged between every two adjacent unit bodies, and the connecting plate fixes the two adjacent unit bodies.
5. The lifting mechanism according to claim 4, wherein the connecting plates are provided in plurality, and the plurality of connecting plates are circumferentially arranged along the cross section of the unit bodies and are fixedly connected with two adjacent unit bodies.
6. The lifting mechanism according to claim 5, wherein the connecting plate has at least two first through holes, and a fixing member passes through the first through holes to fix two adjacent unit bodies.
7. The lifting mechanism as claimed in claim 3, wherein a driving pin is further provided on the rigid chain body, and the driving motor drives the driving pin to raise or lower the moving plate.
8. The lift mechanism of claim 2, wherein the scissor assembly comprises:
the scissors fork comprises at least two scissors fork bodies, wherein the scissors fork bodies are arranged in the width direction of the movable plate, one end of each scissors fork body is connected with the movable plate, and the other end of each scissors fork body is connected with the bottom plate; and
a plurality of support frames, a plurality of support frames set up between two at least scissors fork bodies to support two at least scissors fork bodies.
9. The lift mechanism of claim 8, wherein the scissor fork body comprises a first strut and a second strut, the first strut and the second strut pivotally connected by a pin.
10. The lift mechanism of claim 9, wherein the first strut comprises: one end of the first upper supporting rod is fixedly connected with the moving plate, and one end of the first lower supporting rod is fixedly connected with the bottom plate; the second strut includes: the movable plate is connected with the bottom plate in a sliding mode.
11. The lift mechanism of claim 10, wherein the other end of the first upper strut, the other end of the first lower strut, the other end of the second upper strut, and the other end of the second lower strut are pivotally connected by the pin.
12. A radiation imaging system, comprising:
the ray source assembly and the detector assembly are respectively arranged on two sides of the bearing assembly, and when the ray source assembly emits rays, the detector assembly is used for receiving the rays;
the lift mechanism of any one of claims 1-11, wherein
The moving plate is fixedly connected with the ray source assembly or the detector assembly, and the lifting mechanism drives the ray source assembly or the detector assembly to ascend or descend.
13. A radiation imaging system according to claim 12, further comprising: and one end of the drag chain is fixed on the movable plate, the other end of the drag chain is fixed on the fixed plate, and when the movable plate ascends or descends, the movable plate drives one end of the drag chain to move.
14. A radiation imaging system according to claim 13, wherein a connecting beam is provided on said source and detector assemblies, said connecting beam being routed on said drag chain to follow movement of said drag chain.
CN202210173517.5A 2022-02-24 2022-02-24 Lifting mechanism for radiation imaging system and radiation imaging system Pending CN114992435A (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013212904A (en) * 2012-04-02 2013-10-17 Tsubakimoto Chain Co Meshing chain type lifting device
CN204801748U (en) * 2015-07-15 2015-11-25 王俊 Lift handling device
CN205575459U (en) * 2016-04-11 2016-09-14 东风设计研究院有限公司 Formula cherry picker is piled up to chain
CN206016334U (en) * 2016-08-05 2017-03-15 广州颂拓专用设备有限公司 Liftable stage with rigid chain
CN109030522A (en) * 2018-07-26 2018-12-18 中国人民解放军96630部队 A kind of industry CT detection system
US20210070591A1 (en) * 2018-03-16 2021-03-11 Brilliant Stages Limited Lift
CN213058948U (en) * 2020-03-16 2021-04-27 上海沃典工业自动化有限公司 Rigid chain jacking table of automatic conveying equipment is carried in commodity circulation
CN113264474A (en) * 2021-05-08 2021-08-17 武汉武铁机辆装备有限公司 Lifting mechanism with high compression ratio and unbalance loading function
WO2021185239A1 (en) * 2020-03-19 2021-09-23 清华大学 Back-scatter scanning system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013212904A (en) * 2012-04-02 2013-10-17 Tsubakimoto Chain Co Meshing chain type lifting device
CN204801748U (en) * 2015-07-15 2015-11-25 王俊 Lift handling device
CN205575459U (en) * 2016-04-11 2016-09-14 东风设计研究院有限公司 Formula cherry picker is piled up to chain
CN206016334U (en) * 2016-08-05 2017-03-15 广州颂拓专用设备有限公司 Liftable stage with rigid chain
US20210070591A1 (en) * 2018-03-16 2021-03-11 Brilliant Stages Limited Lift
CN109030522A (en) * 2018-07-26 2018-12-18 中国人民解放军96630部队 A kind of industry CT detection system
CN213058948U (en) * 2020-03-16 2021-04-27 上海沃典工业自动化有限公司 Rigid chain jacking table of automatic conveying equipment is carried in commodity circulation
WO2021185239A1 (en) * 2020-03-19 2021-09-23 清华大学 Back-scatter scanning system
CN113264474A (en) * 2021-05-08 2021-08-17 武汉武铁机辆装备有限公司 Lifting mechanism with high compression ratio and unbalance loading function

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