Column assembly and mobile x-ray machine

Abstract

The column assembly and mobile X-ray machine claimed in the present application, the column assembly comprises a plurality of columns, the plurality of columns are sequentially and slidably connected along the height direction of the column assembly, the adjacent two columns among the plurality of columns are drivingly connected through a connecting rope, wherein one of the adjacent two columns is provided with a protection mechanism, and the other column is provided with a brake plate, the protection mechanism can be clamped with the brake plate, and the adjacent two columns are locked by the clamping; the protection mechanism is drivingly connected with the connecting rope, when the connecting rope is in a taut state, the taut connecting rope can provide an acting force to the protection mechanism to drive the protection mechanism to be separated from the brake plate; when the connecting rope is in a relaxed state or a broken state, the protection mechanism can be clamped with the brake plate. In this way, not only the accuracy of the position of the adjacent two columns during positioning can be ensured, but also the sudden relaxation or breakage of the connecting rope can be effectively protected.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, in particular to a column assembly and a mobile X-ray machine. BACKGROUND

[0002] The mobile X-ray machine, also known as mobile DR, is a device capable of generating X-rays and is widely used in sickbeds and important shooting scenes. The lifting column of the mobile X-ray machine is mostly in the form of linkage composed of pulleys and steel wires. Since the mobile X-ray machine is used a lot every day, the lifting column will be frequently operated, so that the steel wire is prone to damage in the running process. Once the steel wire is loose or broken, it will cause the lifting column to be unable to work normally, and more seriously, it will cause the image part of the mobile X-ray machine to fall. Therefore, it is required to design a safety protection device for the lifting column of the mobile X-ray machine, which can fix the column at a certain position when the steel wire fails, so that it will not fall under the action of the spring balancer and the gravity of the image part.

[0003] When the lifting column of the mobile X-ray machine is working, the tension of the steel wire will change, so that the electronic sensor is not suitable for application in the protection of the lifting column, and a mechanical protection device is preferably used. At present, the anti-falling protection device of the lifting column of the existing mobile X-ray machine uses the reverse locking feature of the ratchet to prevent the column from suddenly falling. This anti-falling protection device is mainly used between the folding cantilever and the column. However, the above-mentioned ratchet is used as a clamping element during work and is also required to be used as an anti-falling protection device in emergency situations. The strength and wear resistance of the ratchet and pawl are tested relatively high. After a long time of use, the wear of the ratchet assembly will cause the position to be inaccurate during positioning, and it may also cause the protection function to be not good enough in the case of sudden situation. SUMMARY

[0004] Therefore, it is necessary to provide a column assembly and a mobile X-ray machine for solving the above technical problems.

[0005] A column assembly, the column assembly comprising a plurality of columns, the plurality of columns being sequentially and slidably connected along a height direction of the column assembly, and two adjacent columns of the plurality of columns being drivingly connected through a connecting rope, wherein one of the two adjacent columns is provided with a protection mechanism, and the other of the two adjacent columns is provided with a brake plate, the protection mechanism is capable of being clamped and matched with the brake plate, and the two adjacent columns are locked by the protection mechanism and the brake plate.

[0006] The protection mechanism is in transmission connection with the connecting rope. When the connecting rope is in a taut state, the taut connecting rope can provide an acting force to the protection mechanism to drive the protection mechanism to disengage from the brake plate. When the connecting rope is in a relaxed state or a broken state, the protection mechanism can be in clamping connection with the brake plate.

[0007] It can be understood that the transmission connection between the connecting rope and the protection mechanism is utilized so that the protection mechanism can be triggered as soon as the connecting rope is relaxed or broken. The locking between the protection mechanism and the brake plate is utilized to limit the relative sliding between the two adjacent columns. Since the connecting rope is always in a taut state during normal operation of the column assembly, the protection mechanism and the brake plate do not participate in the positioning between the two adjacent columns. This not only ensures the accuracy of the position of the two adjacent columns during positioning, but also effectively protects the sudden relaxation or breakage of the connecting rope.

[0008] In one of the embodiments, a plurality of open slots are formed on the brake plate, and the open slots are arranged in sequence along the height direction of the column assembly.

[0009] The protection mechanism comprises a clamping plate, which is rotatably installed on the corresponding column and in transmission connection with the connecting rope. When the connecting rope is relaxed or broken, the clamping plate can be clamped into one of the open slots on the brake plate, and the clamping plate and the brake plate are in clamping connection.

[0010] In one of the embodiments, the clamping plate has a first plane and a second plane, and the first plane and the second plane are connected to each other and formed with a thin end.

[0011] When the connecting rope is relaxed or broken, the thin end can be extended into one of the open slots under the driving of the clamping plate and abut against the slot wall of the corresponding open slot.

[0012] In one of the embodiments, the protection mechanism further comprises an elastic member, which is connected to the clamping plate in a pre-deformed manner.

[0013] When the connecting rope is relaxed or broken, the clamping plate can be clamped into the open slot under the driving of the elastic member.

[0014] In one of the embodiments, the protection mechanism further comprises a support arm, one end of which is rotatably connected to the corresponding column, and the other end of which abuts against the clamping plate.

[0015] The rotating arm is arranged to press against the clamping plate to make the clamping plate disengage from the brake plate in response to the pushing of the connecting rope.

[0016] In one of the embodiments, a limiting groove is formed on the clamping plate, which can be engaged with the rotating arm.

[0017] The rotating center line of the clamping plate is arranged on the middle surface of the limiting groove.

[0018] It can be understood that the rotating center line of the clamping plate is arranged on the middle surface of the limiting groove, so that the force acting on the clamping plate by the rotating arm is directed to the rotating center of the clamping plate, and the stress state of the clamping plate is improved, thereby preventing the clamping plate from turning outward.

[0019] In one of the embodiments, the protection mechanism further comprises a base fixedly installed on the corresponding column.

[0020] The clamping plate is rotatably installed on the base, and when the clamping plate is engaged with the brake plate, the clamping plate can abut against the base to lock the clamping plate.

[0021] In one of the embodiments, the plurality of columns comprises a first column, a second column and a third column, the second column is arranged between the first column and the third column and is in sliding connection with the first column and the third column respectively.

[0022] In one of the embodiments, the connecting rope in transmission connection between the third column and the second column is defined as a first connecting rope, the protection mechanism is installed on the third column, and the protection mechanism on the third column is defined as a first protection mechanism, the first protection mechanism is in transmission connection with the first connecting rope, the brake plate is installed on the second column, and the brake plate on the second column is defined as a first brake plate, and the first protection mechanism can be locked with the first brake plate to limit the descending movement of the third column relative to the second column.

[0023] In one of the embodiments, the connecting rope in transmission connection between the second column and the first column is defined as a second connecting rope, the protection mechanism is installed on the second column, and the protection mechanism on the second column is defined as a second protection mechanism, the second protection mechanism is in transmission connection with the second connecting rope, the brake plate is installed on the first column, and the brake plate on the first column is defined as a second brake plate, and the second protection mechanism can be locked with the second brake plate to limit the ascending movement of the second column relative to the first column.

[0024] The application also claims a mobile X-ray machine comprising the column assembly, the cross arm assembly and the imaging component, wherein the imaging component is installed on the column assembly through the cross arm assembly.

[0025] By means of the above technical scheme, the application has the following advantages compared with the prior art:

[0026] The column assembly and the mobile X-ray machine claimed in the application utilize the transmission connection between the connecting rope and the protection mechanism, so that the protection mechanism can be triggered once the connecting rope is loosened or broken, and the locking between the protection mechanism and the brake plate is utilized to limit the relative sliding between the two adjacent columns. Since the connecting rope is always in a taut state during normal operation of the column assembly, the protection mechanism and the brake plate do not participate in the positioning between the two adjacent columns, which not only ensures the accuracy of the position of the two adjacent columns during positioning, but also effectively protects the sudden loosening or breaking of the connecting rope. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0028] Figure 1 The structural schematic view of the assembly of the first column and the second column in the column assembly provided by an embodiment of the application.

[0029] Figure 2 The structural schematic view of the assembly of the second column and the third column in the column assembly provided by an embodiment of the application.

[0030] Figure 3 The structural schematic view of the second column in the column assembly provided by an embodiment of the application.

[0031] Figure 4 The structural schematic view of the cooperation of the first protection mechanism and the first brake plate provided by an embodiment of the application.

[0032] Figure 5 The sectional view of the cooperation of the first protection mechanism and the first brake plate provided by an embodiment of the application.

[0033] Figure 6 The structural schematic view of the cooperation of the first protection mechanism and the first brake plate provided by an embodiment of the application. Figure 5 The enlarged view of the P part in the above figure.

[0034] Figure 7The second protection mechanism provided by an embodiment of the present application cooperates with the second brake plate.

[0035] Figure 8 For Figure 7 An enlarged view of the Q portion.

[0036] Figure 9 A cross-sectional view of the assembly of the support arm and the base in an embodiment of the present application.

[0037] Figure 10 An exploded view of the assembly of the support arm and the base in an embodiment of the present application.

[0038] Figure 11 A structural schematic view of a tower wheel assembly provided by an embodiment of the present application.

[0039] Figure 12 A structural schematic view of a mobile X-ray machine provided by an embodiment of the present application.

[0040] The reference signs: 100, column assembly; 10, column; 11, first column; 12, second column; 13, third column; 20, connecting rope; 21, first connecting rope; 22, second connecting rope; 30, protection mechanism; 310, first protection mechanism; 320, second protection mechanism; 31, clamping plate; 301, first plane; 302, second plane; 303, thin end; 311, support pivot; 312, limiting groove; 32, elastic member; 33, fixed shaft; 34, base; 341, support shaft; 342, nut; 343, bushing; 344, gasket; 35, support arm; 351, rolling member; 40, brake plate; 410, first brake plate; 420, second brake plate; 41, open slot; 411, slot wall; 412, slot edge; 50, tower wheel assembly; 51, first tower wheel; 511, first helical groove; 52, second tower wheel; 521, second helical groove; 200, cross arm assembly; 300, image component; 1000, mobile X-ray machine. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0042] It is to be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "fixed on" another element, it can be directly fixed on the other element or intervening elements can also be present.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for describing particular embodiments only and is not intended to be limiting of the application. All publications, patent applications, patents, and other references mentioned herein are incorporated by reference in their entirety for the teachings relevant to the sentence and / or paragraph in which the reference is presented.

[0044] The column assembly 100 claimed in the present application, particularly applied to the mobile X-ray machine 1000.

[0045] As shown in Figure 1 , Figure 2 The column assembly 100 provided by an embodiment of the present application includes a plurality of columns 10, which are sequentially and slidably connected along the height direction of the column assembly 100, and the adjacent two columns 10 are drivingly connected by a connecting rope 20. That is, the relative sliding between the adjacent two columns 10 in the column assembly 100 is achieved by the driving of the connecting rope 20, and the overall rising or falling of the column assembly 100 is controlled, and in this process, the connecting rope 20 is always in a taut state. Here, the connecting rope 20 is a steel wire rope, a high-strength nylon rope, etc.

[0046] One of the adjacent two columns 10 in the column assembly 100 of the present application is provided with a protection mechanism 30, and the other column 10 is provided with a brake plate 40. The protection mechanism 30 can be clamped and matched with the brake plate 40, and the adjacent two columns 10 are locked thereby. The protection mechanism 30 is drivingly connected with the connecting rope 20, and when the connecting rope 20 is in a taut state, the taut connecting rope 20 can provide an acting force to the protection mechanism 30 to drive the protection mechanism 30 to disengage from the brake plate 40. When the connecting rope 20 is in a relaxed state or a broken state, the protection mechanism 30 can be clamped and matched with the brake plate 40. That is, by the locking between the protection mechanism 30 and the brake plate 40, the relative sliding of the adjacent two columns 10 in the rising direction and / or the falling direction can be limited. It is to be noted that the protection mechanism 30 and the brake plate 40 are fixedly assembled to the corresponding columns 10, so that once the protection mechanism 30 and the brake plate 40 are locked, the relative sliding between the corresponding two columns 10 can be limited.

[0047] From the above, the column assembly 100 utilizes the transmission connection between the connecting rope 20 and the protection mechanism 30, so that once the connecting rope 20 is relaxed or broken, the triggering of the protection mechanism 30 can be realized, and then the locking between the protection mechanism 30 and the brake plate 40 is utilized to limit the relative sliding between the two adjacent columns 10. Since the connecting rope 20 is always in a taut state during normal operation of the column assembly 100, the setting of the protection mechanism 30 and the brake plate 40 does not participate in the positioning between the two adjacent columns 10. This not only ensures the accuracy of the position of the two adjacent columns 10 during positioning, but also effectively protects the sudden relaxation or breakage of the connecting rope 20.

[0048] As shown in Figures 4 to 8 , in an embodiment, the protection mechanism 30 includes a clamping plate 31 rotatably mounted on the corresponding column 10 and in transmission connection with the connecting rope 20. The brake plate 40 has a plurality of open grooves 41, which are arranged in sequence along the height direction of the column assembly 100. In this way, when the connecting rope 20 is in a taut state, the clamping plate 31 is separated from the brake plate 40. When the connecting rope 20 is relaxed or broken, the clamping plate 31 is clamped into one of the open grooves 41 on the brake plate 40, and the clamping plate 31 and the brake plate 40 are clamped and matched. That is, the locking between the protection mechanism 30 and the brake plate 40 of this embodiment is achieved by clamping between the clamping plate 31 and the open grooves 41 on the brake plate 40. In this process, the locking or unlocking between the protection mechanism 30 and the brake plate 40 can be controlled by controlling the rotation of the clamping plate 31. It should be noted that the plurality of open grooves 41 on the brake plate 40 can cover the entire movement stroke of the clamping plate 31, so that the clamping plate 31 can be clamped with the open grooves 41 on the brake plate 40 at any position.

[0049] It should be noted that when the connecting rope 20 is in a taut state, the taut connecting rope 20 will generate an acting force on the clamping plate 31 due to the transmission connection with the clamping plate 31. This acting force can drive the clamping plate 31 to separate from the brake plate 40. When the connecting rope 20 is relaxed or broken, the clamping plate 31 will lose the acting force of the connecting rope 20, so that the clamping plate 31 can move towards the brake plate 40, and finally realize the clamping between the clamping plate 31 and one of the open grooves 41 on the brake plate 40.

[0050] As shown in Figure 6 , Figure 8As shown in the drawings, in an embodiment, the clamping plate 31 has a first plane 301 and a second plane 302, and a thin end 303 is connected between the first plane 301 and the second plane 302. When the connecting rope 20 is loosened or broken, the thin end 303 can be driven by the clamping plate 31 to extend into the opening slot 41 and abut against the slot wall 411 of the opening slot 41. That is, the clamping plate 31 of this embodiment can realize the locking between the clamping plate 31 and the brake plate 40 by the abutment between the thin end 303 and the slot wall 411 of the opening slot 41 of the brake plate 40, and at the same time, the first plane 301 of the clamping plate 31 can abut against the slot edge 412 of the opening slot 41, so as to lock the adjacent two upright columns 10 in the rising direction or the falling direction, and the adjacent two upright columns 10 can still slide in the opposite direction of the locking, and when the adjacent two upright columns 10 slide in the opposite direction of the locking, the first plane 301 of the clamping plate 31 can collide with the slot edge 412 of a different opening slot 41 of the brake plate 40 and produce a sound, so as to clearly prompt the user that the connecting rope 20 is malfunctioning, and the specific malfunctioning position can also be quickly located, thereby improving the subsequent maintenance efficiency. Here, the user can roughly judge the position of the clamping plate 31 by the sound.

[0051] As shown in the drawings, Figure 4 , Figure 5 , Figure 7 and Figure 8 , in an embodiment, the protection mechanism 30 further comprises an elastic member 32, and the elastic member 32 is connected to the clamping plate 31 in a pre-deformed manner. When the connecting rope 20 is loosened or broken, the clamping plate 31 can be clamped into the opening slot 41 under the drive of the elastic member 32, and the locking between the clamping plate 31 and the brake plate 40 is realized. Here, the pre-compressed elastic member 32 can generate a rotating force on the clamping plate 31 towards the brake plate 40, so that once the clamping plate 31 loses the action force of the connecting rope 20, the clamping plate 31 can automatically rotate towards the brake plate 40 under the drive of the elastic member 32, and if the thin end 303 of the clamping plate 31 can just rotate into the opening slot 41 of the brake plate 40, the locking between the clamping plate 31 and the brake plate 40 is realized, and if the thin end 303 of the clamping plate 31 is located between the adjacent two opening slots 41 of the brake plate 40, the adjacent two upright columns 10 will first run a small distance and then rotate into the opening slot 41, and the locking between the clamping plate 31 and the brake plate 40 is realized. Here, the elastic member 32 is a tension spring, and the like.

[0052] As shown in the drawings, Figure 1 , Figure 2As shown, in an embodiment, the plurality of columns 10 includes a first column 11, a second column 12 and a third column 13, the second column 12 is arranged between the first column 11 and the third column 13 and is in sliding connection with the first column 11 and the third column 13 respectively. That is, the column assembly 100 of this embodiment is designed in a three-stage transmission form, so that the column assembly 100 can meet the requirements of the lifting stroke and functions of the mobile X-ray machine 1000 during operation.

[0053] It should be noted that when the column assembly 100 is designed in a two-stage transmission form, in order to meet the use requirements of the lifting stroke of the mobile X-ray machine 1000 during operation, the heights of two columns 10 in the column assembly 100 are relatively high, which will hinder the user's view when pushing the mobile X-ray machine 1000 to move on the ground; when the column assembly 100 is designed in a four-stage transmission form, or even more stages, on the basis of meeting the use requirements of the lifting stroke of the mobile X-ray machine 1000 during operation, the overall column assembly 100 will appear redundant and bulky, obviously, such a column assembly 100 is unnecessary in the mobile X-ray machine 1000.

[0054] As shown in Figure 4 , Figure 7 , Figure 11 As shown, the connecting rope 20 in transmission connection between the third column 13 and the second column 12 is set as a first connecting rope 21, and the connecting rope 20 in transmission connection between the second column 12 and the first column 11 is set as a second connecting rope 22; the second column 12 is fixed with a tower wheel assembly 50, the tower wheel assembly 50 has a first tower wheel 51 and a second tower wheel 52 coaxially arranged and connected with each other, the radius of the first tower wheel 51 is smaller than the radius of the second tower wheel 52, wherein one end of the first connecting rope 21 is wound in a first spiral groove 511 of the first tower wheel 51 and connected with the first tower wheel 51, the other end of the first connecting rope 21 is fixed to the third column 13; one end of the second connecting rope 22 is wound in a second spiral groove 521 of the second tower wheel 52 and connected with the second tower wheel 52, the other end of the second connecting rope 22 is fixed to the first column 11. In this way, when the column assembly 100 of this embodiment performs the lifting action, due to the different radii between the first tower wheel 51 and the second tower wheel 52, the first connecting rope 21 and the second connecting rope 22 present a certain stroke ratio, so that the first tower wheel 51, the second tower wheel 52, the first connecting rope 21 and the second connecting rope 22 can simultaneously act, and realize the linkage lifting between the second column 12 and the third column 13 of the column assembly 100.

[0055] For example, when the column assembly 100 needs to pull the tertiary column 13 down, the distance between the tertiary column 13 and the secondary column 12 will be lengthened, causing the first connecting rope 21 to be released in and out on the first tower wheel 51. At the same time, the second tower wheel 52 will drive the second connecting rope 22 to contract to pull the secondary column 12 downward, thereby realizing the linkage between the secondary column 12 and the tertiary column 13.

[0056] like Figures 2 to 5 As shown, in one embodiment, a protection mechanism 30 is mounted on the tertiary column 13 and is configured as a first protection mechanism 310. The first protection mechanism 310 is transmission-connected to the first connecting rope 21. A brake plate 40 is mounted on the secondary column 12 and is configured as a first brake plate 410. The first protection mechanism 310 can be locked with the first brake plate 410 to restrict the tertiary column 13 from descending relative to the secondary column 12. Here, the first connecting rope 21 is directly connected to the first protection mechanism 310. That is, the first connecting rope 21 is specifically mounted to the tertiary column 13 via the first protection mechanism 310, thereby achieving a transmission connection between the first connecting rope 21 and the first protection mechanism 310.

[0057] like Figure 5 、 Figure 6 As shown, in one embodiment, the thin end 303 of the card plate 31 in the first protection mechanism 310 is arranged below the rotation center line of the card plate 31, so that when the card plate 31 loses the force of the first connecting rope 21, the card plate 31 can drive the thin end 303 to be clamped into the opening groove 41 of the first brake plate 410 under the drive of the elastic member 32, and then the abutment between the thin end 303 on the card plate 31 and the groove wall 411 of the opening groove 41 can be used to limit the downward sliding of the third column 13 relative to the secondary column 12.

[0058] like Figure 4 、 Figure 5As shown, in an embodiment, the first protection mechanism 310 further comprises a fixing shaft 33 and a base 34, the fixing shaft 33 is installed on the clamping plate 31 and connected with the first connecting rope 21, and specifically, the fixing shaft 33 can be connected with the clamping plate 31 as an integral structure. Wherein, the clamping plate 31 is rotatably installed on the base 34 through a supporting pivot 311, and the elastic member 32 is arranged at a position below the supporting pivot 311 and connected with the clamping plate 31 and the base 34 respectively. The first connecting rope 21 is arranged around the fixing shaft 33, so that the first connecting rope 21 in a taut state can generate an upward pulling force on the clamping plate 31 through the fixing shaft 33. Since the elastic force generated by the elastic member 32 on the clamping plate 31 is smaller than the pulling force generated by the first connecting rope 21 on the clamping plate 31, it can be ensured that the clamping plate 31 will not contact the first brake plate 410 when the first connecting rope 21 is in a taut state, that is, the first protection mechanism 310 will not be triggered. When the first connecting rope 21 relaxes or breaks and loses the upward pulling force on the clamping plate 31, the clamping plate 31 will rotate on the supporting pivot 311 in the direction of the first brake plate 410 under the action of the elastic member 32, so that the thin end 303 on the clamping plate 31 can be clamped into the open slot 41 of the first brake plate 410, and the locking between the clamping plate 31 and the first brake plate 410 is achieved. At the same time, the fixing shaft 33 on the clamping plate 31 will abut against the base 34 and limit the clamping plate 31 to release the locking between the clamping plate 31 and the first brake plate 410 in the descending direction. Here, the fixing shaft 33 and the clamping plate 31 are connected and fixed in a threaded manner.

[0059] As can be seen from the above, the first protection mechanism 310 of the above embodiment can be assembled on the three-stage column 13 based on the base 34, so that the modularization of the overall structure of the first protection mechanism 310 can be realized to facilitate the assembly and application of the first protection mechanism 310 on the three-stage column 13. It should be noted that the above-mentioned base 34 can also be a component on the three-stage column 13.

[0060] As shown in FIG. 1, Figure 3 , Figure 7 , Figure 8 As shown, in an embodiment, the second-stage column 12 is installed with a protection mechanism 30, and the protection mechanism 30 on the second-stage column 12 is set as a second protection mechanism 320, the second protection mechanism 320 is drivingly connected with the second connecting rope 22, the first-stage column 11 is installed with a brake plate 40, and the brake plate 40 on the first-stage column 11 is set as a second brake plate 420, and the second protection mechanism 320 can be locked with the second brake plate 420 to limit the upward movement of the second-stage column 12 relative to the first-stage column 11. Here, the second protection mechanism 320 is arranged on the path of the second connecting rope 22 and forms positional interference with the second connecting rope 22, and the driving connection between the second connecting rope 22 and the second protection mechanism 320 is realized by the acting force generated by the positional interference.

[0061] As Figure 7 , Figure 8 shown in an embodiment, the thin end 303 of the clamping plate 31 in the second protection mechanism 320 is arranged at a position above the rotation center line of the clamping plate 31, so that when the clamping plate 31 loses the force of the second connecting rope 22 due to the relaxation or breakage of the second connecting rope 22, the clamping plate 31 can drive the thin end 303 to be clamped into the open slot 41 of the second brake plate 420 under the drive of the elastic member 32, and the abutment between the thin end 303 of the clamping plate 31 and the slot wall 411 of the open slot 41 can limit the upward sliding of the second upright column 12 relative to the first upright column 11.

[0062] As Figures 7 to 10 shown in an embodiment, the second protection mechanism 320 further includes a support arm 35 and a base 34, and the clamping plate 31 is also rotatably installed on the base 34 through the support pivot 311. The part of the elastic member 32 connected with the clamping plate 31 is arranged at a position above the support pivot 311 and is connected with the clamping plate 31 and the base 34 respectively, and the base 34 is fixedly installed on the second upright column 12. One end of the support arm 35 is rotatably connected to the base 34 of the second upright column 12, and the other end of the support arm 35 abuts against the clamping plate 31. The support arm 35 rotatably installs a rolling member 351 thereon, and the rolling member 351 forms a position interference part with the second connecting rope 22 in the taut state, and the support arm 35 is configured to press against the clamping plate 31 in response to the pushing of the second connecting rope 22 in the taut state, so as to make the clamping plate 31 disengage from the second brake plate 420. That is, the second connecting rope 22 in the taut state can push the support arm 35 through the rolling member 351, and the support arm 35 is used to press against the clamping plate 31 to limit the rotation of the clamping plate 31 on the support pivot 311 under the drive of the elastic member 32, so that the clamping plate 31 rotates towards the second brake plate 420 and disengages from the second brake plate 420. Here, the rolling member 351 is arranged as a roller, a bearing or the like.

[0063] As Figure 9 , Figure 10As shown in the drawings, in an embodiment, the base 34 is fixedly connected with a support shaft 341, the support arm 35 is rotatably installed on the support shaft 341 and is limited by a nut 342 screwed on the support shaft 341, so that the rotation connection of the support arm 35 on the base 34 can be realized; wherein two bushings 343 are assembled between the support arm 35 and the support shaft 341, and the two bushings 343 are used to lubricate the assembly of the support arm 35 on the support shaft 341, so as to reduce the friction resistance generated when the two rotate relative to each other. Here, the support shaft 341 is fixed to the base 34 by welding, the support arm 35 is in the shape of "L", and one end of the support arm 35 is rotatably installed on the support shaft 341 of the base 34, wherein the support shaft 341 is also sleeved with a gasket 344, and the nut 342 can abut against the bushing 343 adjacent to the nut 342 through the gasket 344. It should be noted that one of the two bushings 343 is used to separate the support arm 35 from the nut 342, and the other bushing 343 is used to separate the support arm 35 from the base 34.

[0064] As shown in the drawings, Figure 7 , Figure 8 In an embodiment, a limiting groove 312 is formed on the clamping plate 31, and the limiting groove 312 can be clamped and matched with the support arm 35; wherein the center line of rotation of the clamping plate 31 is arranged on the middle surface of the limiting groove 312. That is, the force of the support arm 35 acting on the clamping plate 31 is directed to the center of rotation of the clamping plate 31, and the stress state of the clamping plate 31 is improved, so that the relative displacement between the support arm 35 and the clamping plate 31 during pressing the clamping plate 31 can be prevented, the clamping plate 31 can be prevented from turning outward, and the second protection mechanism 320 can be prevented from being triggered when the second connecting rope 22 is in a taut state. In this way, when the second connecting rope 22 is once relaxed or broken and loses the pushing force on the rolling piece 351, the clamping plate 31 will rotate on the support shaft 311 in the direction of the second brake plate 420 under the action of the elastic piece 32, so that the thin end 303 on the clamping plate 31 can be clamped into the open slot 41 of the second brake plate 420, and the locking between the clamping plate 31 and the second brake plate 420 can be realized, and at the same time, the clamping plate 31 can abut against the base 34 and limit the clamping plate 31 to release the locking between the clamping plate 31 and the second brake plate 420 in the upward direction.

[0065] As can be seen from the above, the second protection mechanism 320 of the embodiment can be assembled on the two-stage column 12 based on the base 34, so that the modularization of the overall structure of the second protection mechanism 320 can be realized, so as to facilitate the assembly and application on the two-stage column 12. It should be noted that the above-mentioned base 34 is a component on the two-stage column 12.

[0066] As shown in the drawings, Figure 12As shown, the application also requests to provide a mobile X-ray machine 1000, comprising the column assembly 100, the cross arm assembly 200 and the imaging component 300, the imaging component 300 is installed on the column assembly 100 through the cross arm assembly 200. So that the mobile X-ray machine 1000 works, the imaging component 300 can be lifted or lowered by the lifting of the column assembly 100 to meet the use requirements of the target object scanning when the imaging component 300 works.

[0067] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations are described, however, it is to be understood that the application encompasses all possible combinations of the described features.

[0068] Those skilled in the art should recognize that the above embodiments are only used to illustrate the application, and are not used as a limitation of the application. Any appropriate changes and variations made to the above embodiments within the spirit and principles of the application shall fall within the scope of the application.

Claims

1. A column assembly, characterized by The column assembly (100) comprises a plurality of columns (10), the plurality of columns (10) are sequentially and slidably connected along the height direction of the column assembly (100), and adjacent two columns (10) are drivingly connected through a connecting rope (20), wherein one of the adjacent two columns (10) is provided with a protection mechanism (30), and the other column (10) is provided with a brake plate (40), the protection mechanism (30) can be clamped with the brake plate (40), and the adjacent two columns (10) are locked; The protection mechanism (30) is drivingly connected with the connecting rope (20), when the connecting rope (20) is in a taut state, the taut connecting rope (20) can provide an acting force to the protection mechanism (30) to drive the protection mechanism (30) to be separated from the brake plate (40); when the connecting rope (20) is in a relaxed state or a broken state, the protection mechanism (30) can be clamped with the brake plate (40); A plurality of opening grooves (41) are formed in the brake plate (40), and the plurality of opening grooves (41) are sequentially and spacedly arranged along the height direction of the column assembly (100); the protection mechanism (30) comprises a clamping plate (31), the clamping plate (31) is rotatably installed on the corresponding column (10) and drivingly connected with the connecting rope (20), when the connecting rope (20) is relaxed or broken, the clamping plate (31) can be clamped into one of the opening grooves (41) on the brake plate (40), and the clamping plate (31) is clamped with the brake plate (40); The protection mechanism (30) further comprises a resilient member (32), the resilient member (32) is connected to the clamping plate (31) in a pre-deformation manner; when the connecting rope (20) is relaxed or broken, the clamping plate (31) can be clamped into the opening groove (41) under the driving of the resilient member (32); The protection mechanism (30) further comprises a supporting arm (35), one end of the supporting arm (35) is rotatably connected to the corresponding column (10), and the other end of the supporting arm (35) abuts against the clamping plate (31); wherein the supporting arm (35) is rotatably provided with a rolling member (351), the rolling member (351) forms a position interference part with the connecting rope (20) in a taut state, and the supporting arm (35) is configured to abut against the clamping plate (31) in response to the pushing of the connecting rope (20), so that the clamping plate (31) is separated from the brake plate (40); A limiting groove (312) is formed in the clamping plate (31), and the limiting groove (312) can be clamped with the supporting arm (35); wherein the rotation center line of the clamping plate (31) is arranged on the middle surface of the limiting groove (312).

2. The column assembly of claim 1, wherein, The clamping plate (31) has a first plane (301) and a second plane (302), the first plane (301) and the second plane (302) are connected to each other and formed with a thin end (303); When the connecting rope (20) is relaxed or broken, the thin end (303) can be driven by the clamping plate (31) to extend into one of the open grooves (41) and abut against the corresponding open groove (41) wall (411).

3. The column assembly of claim 1, wherein, The protection mechanism (30) further comprises a base (34) fixedly installed on the corresponding stand (10); Wherein, the clamping plate (31) is rotatably installed on the base (34), and when the clamping plate (31) is clamped and matched with the brake plate (40), the clamping plate (31) can abut against the base (34) to lock the clamping plate (31).

4. The column assembly of claim 1, wherein, A plurality of the stand (10) includes a first column (11), a second column (12) and a third column (13), the second column (12) is arranged between the first column (11) and the third column (13) and is slidably connected with the first column (11) and the third column (13) respectively.

5. The column assembly of claim 4, wherein, The connecting rope (20) drivingly connected between the third column (13) and the second column (12) is set as a first connecting rope (21), the protection mechanism (30) is installed on the third column (13), and the protection mechanism (30) on the third column (13) is set as a first protection mechanism (310), the first protection mechanism (310) is drivingly connected with the first connecting rope (21), the brake plate (40) is installed on the second column (12), and the brake plate (40) on the second column (12) is set as a first brake plate (410), and the first protection mechanism (310) can be locked with the first brake plate (410) to limit the descending movement of the third column (13) relative to the second column (12); And, the connecting rope (20) drivingly connected between the second column (12) and the first column (11) is set as a second connecting rope (22), the protection mechanism (30) is installed on the second column (12), and the protection mechanism (30) on the second column (12) is set as a second protection mechanism (320), the second protection mechanism (320) is drivingly connected with the second connecting rope (22), the brake plate (40) is installed on the first column (11), and the brake plate (40) on the first column (11) is set as a second brake plate (420), and the second protection mechanism (320) can be locked with the second brake plate (420) to limit the ascending movement of the second column (12) relative to the first column (11).

6. A mobile X-ray machine, characterized by A column assembly (100), a cross arm assembly (200) and an image component (300) as claimed in any one of claims 1-5, the image component (300) being mounted on the column assembly (100) by the cross arm assembly (200).

Images