CN105806460A - Weight measuring method used for checking bed and checking bed - Google Patents
Weight measuring method used for checking bed and checking bed Download PDFInfo
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- CN105806460A CN105806460A CN201610124730.1A CN201610124730A CN105806460A CN 105806460 A CN105806460 A CN 105806460A CN 201610124730 A CN201610124730 A CN 201610124730A CN 105806460 A CN105806460 A CN 105806460A
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- weight
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/44—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing persons
- G01G19/445—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing persons in a horizontal position
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/04—Positioning of patients; Tiltable beds or the like
- A61B6/0407—Supports, e.g. tables or beds, for the body or parts of the body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/52—Weighing apparatus combined with other objects, e.g. furniture
Abstract
The invention discloses a weight measuring method used for a checking bed. The checking bed includes a bearing device used for bearing a to-be-detected object, a support used for holding the bearing device, screw rod nuts fixedly connected with the support, screw rods used collaboratively with the screw rod nuts and a sensor fixedly connected with the screw rod nuts. The method includes steps of utilizing the sensor for obtaining a pressure value T applied to the screw rod nuts by the bearing device and the to-be-detected object; determining the weight of the to-be-detected object according to the pressure value T. According to the invention, the pressure value is determined according to the output voltage of the sensor, so that the weight of a patient can be determined. The operation is simple and conveniently and the data precision is comparatively high.
Description
Technical field
The present invention relates to weight detecting technical field, particularly relate to a kind of method for measuring weight for examinating couch, and use the examinating couch of this method for measuring weight.
Background technology
In medical imaging diagnostic device, such as nuclear magnetic resonance, NMR (MagneticResonance, MR), computed tomography (ComputedTomography, CT) etc., generally include an imaging device with circular cavity and an examinating couch.Examinating couch generally includes bed board and for supporting the bedstead of bed board, and bed board moves horizontally relative to described bedstead under the driving of motor, patient delivers to the position that imaging device specifies and is scanned.
Nuclear magnetic resonance, NMR is a kind of biological magnetic spin imaging technique, it is the feature utilizing nuclear spin campaign, in externally-applied magnetic field, produces radiofrequency signal after RF pulse-to-pulse impulse, detect with detector and input computer, after computer disposal is changed, on screen, showing image.In the scanning process of nuclear magnetic resonance, NMR, it is necessary to the power according to the weight set radiofrequency signal of patient, to avoid patient is caused damage.Therefore, the weight obtaining patient before scanning has great importance.At present, the usual way of weight obtaining patient is to be provided a gravimetric value by patient, or is estimated a gravimetric value by operator according to observed patient information.Said method, inaccurate because of weight information, or the data entry error caused due to the carelessness of operator, thus causing the calculating deviation when security monitoring and potential safety problem occur, or cause that restriction occurs in the parameter of application.Another kind of way is to weigh before the scan, but operates comparatively laborious.
The existing examinating couch with heavy measuring function, it is common that by arranging sensor on the bedstead of examinating couch, detect the weight of patient.But in the above-mentioned examinating couch with heavy measuring function, the total center of gravity that must first make bed board and patient is positioned on an equilbrium position, namely the total position of centre of gravity of the weight of patient and bed board and patient is relevant, before same patient being carried out the weight detecting of not homogeneous or different patients is carried out weight detecting, all must flow through control system control bed board drives patient to move, and after determining above-mentioned equilbrium position according to the output valve of sensor, the weight of patient could be calculated according to the output valve of sensor.Operating process is loaded down with trivial details, waste time and energy, and certainty of measurement is not high.
In order to overcome the defect of check weighing in prior art, it is necessary to propose a kind of new Weight detecting device and method.
Summary of the invention
In order to solve above-mentioned technical problem, present invention provide for the method for measuring weight of examinating couch, method for measuring weight for examinating couch, described examinating couch includes the bogey for carrying target to be measured, for supporting the support of described bogey, fix, with described support, the feed screw nut being connected, with described feed screw nut with the use of screw mandrel, and fix, with described feed screw nut, the sensor being connected, said method comprising the steps of:
Sensor is utilized to obtain the force value T being applied on feed screw nut by bogey and target to be measured；
The weight of target to be measured is determined according to described force value T.
Optionally, described force value T is obtained according to sensor output voltage.
Optionally, the relation between weight and the force value T of target to be measured is: M=k1*T/g-m0, wherein M is the weight of target to be measured, m0For the weight of bogey, k1For constant, constant k1Depend on the position relationship of described screw mandrel and described support.
Optionally, the corresponding relation prestoring between weight and the force value T of target to be measured is also comprised the steps:；According to the corresponding relation between described force value T and weight and the force value T of target to be measured that prestore, it is determined that the weight of target to be measured.
The present invention also provides for a kind of examinating couch with heavy measuring function, including:
Bogey, is used for carrying target to be measured；
Support, is used for supporting described bogey；
Feed screw nut, fixes with described support and is connected；
Screw mandrel, run through described feed screw nut and with described feed screw nut with the use of；And
Sensor, described sensor is fixing with described feed screw nut to be connected, for obtaining the force value T being applied on feed screw nut by bogey and target to be measured；
Processor, for determining the weight of target to be measured according to force value T.
Optionally, described sensor is circulus, and is socketed on described feed screw nut, and the weight of described bogey and target to be measured is applied on described feed screw nut by described sensor.
Optionally, optionally, also including the spacing ring for preventing described sensor and described feed screw nut from mutually rotating, described spacing ring is connected to feed screw nut periphery, and fixing with described sensor is connected.
Optionally, described support includes the shears fork structure of the first pole and the second pole interconnection composition, described two poles are flexibly connected by rotating shaft, and described motor and the first pole are fixed and connected, and described screw mandrel is connected with described second pole by described feed screw nut.
Optionally, described support includes the first shears fork structure and the second shears fork structure, described first, second shears crotch structure is made up of two pole interconnections respectively, two poles of described shears fork structure are flexibly connected by rotating shaft, described motor is fixed on two pole junctions of described first shears fork structure, and described feed screw nut is fixed on two pole junctions of described second shears fork structure.
The examinating couch with heavy measuring function of the present invention and method for measuring weight, examinating couch is provided with screw mandrel and feed screw nut, obtained the force value being applied on feed screw nut by target to be measured and bogey by sensor, and then utilize this force value to determine the weight of target to be measured.Adopting technical scheme, before check weighing, it is not necessary to adjust the center of gravity of target to be measured and bogey, as long as determining described force value by sensor output voltage, namely can determine that the weight of patient, easy and simple to handle, data precision is higher.
Accompanying drawing explanation
Fig. 1, Fig. 2, Fig. 3 are the schematic diagrams of the examinating couch with heavy measuring function of the embodiment of the present invention one；
Fig. 4 is the schematic diagram of the examinating couch with heavy measuring function of the embodiment of the present invention two；
Fig. 5 is the flow chart of the method for measuring weight for examinating couch of the embodiment of the present invention three；
Fig. 6 is the flow chart of the method for measuring weight for examinating couch of the embodiment of the present invention four.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the premise not making creative work, broadly fall into the scope of protection of the invention.
Embodiment one
Present embodiments provide a kind of examinating couch with heavy measuring function, can be used for the measurement of patient weight in armarium, described armarium can be nuclear magnetic resonance equipment, ct apparatus, radiotherapy equipment, XRAY equipment, PET/CT equipment etc., when utilizing above-mentioned armarium to be scanned imaging or radiotherapy, typically require the weight obtaining patient, the parameter of system is adjusted with reference to this gravimetric value, while ensureing imaging or treatment precision, it is to avoid owing to parameter setting deviation brings damage to patient.
Fig. 1, Fig. 2, Fig. 3 are the schematic diagrams of the examinating couch with heavy measuring function of the embodiment of the present invention one, with reference to shown in Fig. 1, the examinating couch of the present embodiment includes bed board 100, for carrying patient, base 200, for supporting the support of described bed board 100, fix the feed screw nut 410 being connected with described support, and run through feed screw nut 410 and feed screw nut with the use of screw mandrel 400.
Shown in Fig. 1, described support includes two groups of identical Holder for scissors of structure, often group Holder for scissors includes two shears fork structures that structure is identical, wherein first shears fork structure 500 of first group of Holder for scissors includes pole 510 and pole 520, described pole 510 and 520 is flexibly connected by rotating shaft 530 intersection, and described pole 510 and 520 is with described rotating shaft 530 for a spot wobble；Second shears fork structure (not shown) of first group of Holder for scissors also includes two poles being flexibly connected by rotating shaft intersection, two poles of second shears fork structure parallel with the pole 510 of first shears fork structure 500 and pole 520 respectively, and described two poles are with rotating shaft for a spot wobble；Two rotating shafts of two of which shears fork structure can be connected by contiguous block, to constitute described first group of Holder for scissors.
Same, first shears fork structure 600 of described second group of Holder for scissors includes pole 610 and pole 620, and described pole 610 and 620 is flexibly connected by rotating shaft 630 intersection, and described pole 610 and 620 is with described rotating shaft 630 for a spot wobble；Second shears fork structure (not shown) of second group of Holder for scissors also includes two poles being flexibly connected by rotating shaft intersection, two poles of second shears fork structure parallel with the pole 610 of first shears fork structure 600 and pole 620 respectively, and described two poles are with rotating shaft for a spot wobble；Two rotating shafts of two of which shears fork structure can be connected by contiguous block, to constitute described second group of Holder for scissors.
Wherein, in first shears fork structure of described first group of Holder for scissors, one end of pole 510 is flexibly connected by rotating shaft 540 with the pole 620 in first shears fork structure of second group of Holder for scissors, in first shears fork structure of described first group of Holder for scissors, pole 520 is flexibly connected by rotating shaft 550 with the pole 610 in first shears fork structure of second group of Holder for scissors；Accordingly, the pole in second shears fork structure of first group of Holder for scissors is flexibly connected by rotating shaft with the pole in second shears fork structure of second group of Holder for scissors respectively.
Described motor 300 can be connected with the contiguous block of described second group of Holder for scissors, one end of described screw mandrel 400 is fixing with motor 300 to be connected, the other end of screw mandrel 400 is connected by the contiguous block of feed screw nut 410 with described first group of Holder for scissors, and namely the other end of screw mandrel 400 is arranged in described feed screw nut 410.
In the present embodiment, motor 300 drives described screw mandrel 400 to rotate, and described feed screw nut 410 moves along the length direction of screw mandrel 400 under the revolving force effect of screw mandrel 400, drives support to do stretching motion, thus driving bed board to move along the telescopic direction of described support.
In order to detect the weight of the patient being placed on bed board 100, the present embodiment is provided with sensor 700, for detecting the force value T being applied on feed screw nut by patient and bed board, with reference to shown in Fig. 2, described feed screw nut 410 is hollow circular cylinder structure, near described hollow circular cylinder along cylinder axis to one end outwardly extension constitute flange 411；Described sensor 700 is loop configuration, is socketed in feed screw nut 410 peripheral, and is fastened on flange 411 place.In order to strengthen sensor 700 and the stability of feed screw nut 410 connection, it is additionally provided with spacing ring 560, described spacing ring 560 is arranged around flange 411, and the position shape that described spacing ring 560 contacts with described flange 411 is mutually matched, simultaneously, described spacing ring 560 and the fixing connection of described sensor 700 stacking, be used for preventing from occurring between sensor 700 and feed screw nut 410 mutually to rotate.Sensor 700 is fixing with self-adaptive regulating structure 570 further to be connected, self-adaptive regulating structure 570 is fixing with contiguous block 580 to be connected, self-adaptive regulating structure 570 is for eliminating the deviation being likely to occur in vertical drive process, unrelated with the present embodiment implementation, does not repeat herein.In the present embodiment, the weight of load is delivered to self-adaptive regulating structure 570 by contiguous block 580, and then is delivered on sensor 700 and feed screw nut 410.
It should be understood that a kind of example of above-mentioned simply sensor set-up mode, individual in other embodiments, it is also possible to realize the fixing of sensor and screw mandrel by the mode stacked, as long as guaranteeing that the weight of patient and bed board is applied to feed screw nut by sensor and goes up.
With reference to shown in Fig. 3, in the present embodiment, when patient is placed on described bed board 100, the thrust of screw mandrel 400 supporting whole load, the load in the present embodiment includes patient and bed board.When motor 300 drives screw mandrel 400 to rotate, feed screw nut 410 is under the effect of the revolving force of screw mandrel during vertical direction uniform motion distance h, feed screw nut 410 drives telescope support vertically to do stretching motion, thus the distance driving bed board 100 vertically uniform motion is H, the thrust assuming screw mandrel is F, the weight of patient is M, and the weight of bed board is m0, then according to law of conservation of energy, it can be deduced that:
F*h=(M+m0)*g*H(1)
F=(H/h) * (M+m0)*g(2)
Assuming that the pin joint of pole 510 and bed board is designated as A, interconnection place of pole 510 and pole 520 is designated as B, and interconnection place of pole 510 and pole 620 is designated as C, then the character according to similar triangles, it can be deduced that:
H/h=AC/BC
The thrust of screw mandrel is equal with the force value being applied on feed screw nut by patient and bed board again, is therefore applied to the relation between the force value T on feed screw nut and patient weight by the weight of patient and bed board and is:
T=(AC/BC) * (M+m0)*g(3)
M=(BC/AC) * T/g-m0(4)
It should be understood that when bed board carrying patient remains static at vertical direction, the principle according to equalising torque, it is also possible to determine that patient weight and the force value T being applied on feed screw nut by patient and bed board meet above-mentioned formula (4).
From above-mentioned formula it can be seen that relation between patient weight and force value T, relevant to the position of B point, namely relevant with the position relationship being connected of support to screw mandrel, for specific supporting structure, BC/AC is definite value, is set to k1。
M=k1*T/g-m0(5)
Sensor in the present invention is force transducer, operation principle according to force transducer, when its stressing conditions changes, the magnitude of voltage of sensor output can change therewith, for same sensor, the magnitude of voltage of its output is proportional with the size of its stress, it is assumed that sensor output voltage is U, then the relation between force value T and sensor output voltage U is:
T=k2*U(6)
Wherein, k2For the proportionality coefficient between force value T and sensor output voltage.
So in conjunction with formula (5) and (6) it follows that meet following relation between patient weight M and sensor output voltage U:
M=(k1*k2*U/g)-m0(7)
It should be understood that when the change in location of B point, k1Value also can change accordingly.But meet linear function relation between the weight of patient and sensor output voltage, i.e. M=aU-m0, wherein a is constant, m0For the weight of bed board, a=k in the present embodiment1*k2/g。
Additionally: the set-up mode of the screw mandrel recorded in the present embodiment is a kind of example simply, is not the restriction to screw mandrel set-up mode.Feed screw nut being such as fixed on the junction of two groups of Holder for scissors, i.e. the point of C in Fig. 1, be fixed on by motor on base 200, and keep screw mandrel along the lifting direction of bed board, namely vertical direction is arranged.Now, owing to the structure of two groups of Holder for scissors is identical, therefore at formula M=(k1*k2*U/g)-m0In, k1Value be definite value 0.5.
Embodiment two
Fig. 4 is the schematic diagram of the examinating couch with heavy measuring function of the embodiment of the present invention two, with reference to shown in Fig. 4, the present embodiment and embodiment one are distinctive in that, support in the present embodiment only includes one group of Holder for scissors, and Holder for scissors includes two shears fork structures that structure is identical, wherein first shears fork structure 800 includes pole 810 and pole 820, and described pole 810 and 820 is flexibly connected by rotating shaft 830 intersection, and described pole 810 and 820 is with described rotating shaft 830 for a spot wobble；Second shears fork structure (not shown) also includes two poles being flexibly connected by rotating shaft intersection, and described two poles parallel with pole 810 and the pole 820 of first shears fork structure 800.Wherein in second shears fork structure, the pole paralleled with 810, it is connected by the first contiguous block is fixing with pole 810, in second shears fork structure, the pole paralleled with pole 820, it is connected by the second contiguous block is fixing with pole 820.
Described motor (not shown) can fixing with the second contiguous block be connected, one end of screw mandrel 400 is fixing with motor to be connected, the other end of screw mandrel 400 is connected with described first contiguous block by feed screw nut, and namely the other end of screw mandrel 400 is arranged in described feed screw nut.
Sensor is fixing with described feed screw nut to be connected, and concrete connected mode is, is connected to the periphery of described feed screw nut by the mode being socketed.
In the present embodiment, patient weight M and be applied between the force value T on feed screw nut by patient and bed board and meet following relation:
M=k1*T/g-m0(8)
Patient weight M and sensor output voltage U meets following relation:
M=k1*k2*U/g-m0(9)
Wherein: k1Relevant to the link position relation of leading screw and support, k2For the proportionality coefficient between force value T and sensor output voltage；m0Weight for bed board.
Embodiment three
The present embodiment provides a kind of method for measuring weight for examinating couch, described examinating couch includes the bed board for carrying patient, for supporting the support of described bed board, the feed screw nut being connected is fixed with described support, with described feed screw nut with the use of screw mandrel, and fix, with described feed screw nut, the sensor being connected.Fig. 5 is the method for measuring weight flow chart for examinating couch of the embodiment of the present invention three, and with reference to shown in Fig. 5, the method described in the present embodiment comprises the following steps:
S1: utilize sensor to obtain the force value T being applied on feed screw nut by patient and bed board；
The content recorded by embodiment one is it can be seen that patient weight M and be applied to the relation between the force value T on feed screw nut by patient and bed board and be:
M=k1*T/g-m0(10)
k1Relevant to the link position relation of support with screw mandrel, for specific supporting structure, k1For definite value.
Further, operation principle according to sensor, when its stressing conditions changes, the magnitude of voltage of sensor output can change therewith, for same sensor, the magnitude of voltage of its output is proportional with the size of its stress, it is assumed that sensor output voltage is U, then the relation between force value T and sensor output voltage U is:
T=k2*U(11)
k2For the proportionality coefficient between force value T and sensor output voltage.
So in conjunction with formula (10) and (11) it follows that meet following relation between weight and the sensor output voltage of patient:
M=(k1*k2*U/g)-m0(12)
It should be understood that for different examinating couch devices, k1And k2Concrete numerical value and differ, but meet linear function relation between the weight of target to be measured and sensor output voltage, i.e. M=a*U-m0, wherein a is constant, m0For the weight of bed board, a=k in the present embodiment1*k2/g。
S2: determine described patient weight M according to described force value T.
Therefore when patient is placed on bed board, as long as obtaining the output voltage of this sensor, namely can determine that described force value T, and then determining the weight of patient.
Embodiment four
The present embodiment provides a kind of method for measuring weight for examinating couch, and Fig. 6 is the flow chart of the method for measuring weight for examinating couch of the embodiment of the present invention four, with reference to, shown in Fig. 6, said method comprising the steps of:
S1', corresponding relation between the weight prestoring target to be measured and sensor output voltage；
Specifically, choose several targets to be measured, owing to the weight of human body is generally between 0-100KG, the weight of the target to be measured that the present embodiment is chosen is between 0-150KG, the weight of target to be measured respectively 5KG, 5.5KG, 6KG, 6.5KG ... 150KG, respectively above-mentioned 146 targets to be measured are placed on bed board, the sensor described bed board of output carries magnitude of voltage during above-mentioned target to be measured respectively, and is prestored in memory by the corresponding relation between weight and the sensor output voltage of target to be measured.
S2', obtain described sensor output voltage；
S3', determine the weight of patient according to the corresponding relation between weight and the sensor output voltage of described sensor output voltage and described target to be measured.
Understandable, the force value being applied on feed screw nut due to the weight of patient and bed board can be obtained according to sensor output voltage, therefore the corresponding relation between the weight of target to be measured and described force value can also be prestored, and obtain described force value according to sensor output voltage, and then determine the weight of patient.
The examinating couch with heavy measuring function of the present invention and method for measuring weight, examinating couch is provided with screw mandrel and feed screw nut, obtained by sensor and be applied to the force value on feed screw nut by the weight of patient and bed board, and then utilize this force value to determine the weight of target to be measured.Adopt technical scheme, before check weighing, as long as patient couches on bed board, the center of gravity of patient and bed board need not being obtained in advance, as long as determining described force value by sensor output voltage, namely can determine that the weight of patient, easy and simple to handle, data precision is higher.
The above is the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (9)
1. for the method for measuring weight of examinating couch, described examinating couch includes the bogey for carrying target to be measured, for supporting the support of described bogey, the feed screw nut being connected is fixed with described support, with described feed screw nut with the use of screw mandrel, and fix, with described feed screw nut, the sensor being connected, said method comprising the steps of:
Sensor is utilized to obtain the force value T being applied on feed screw nut by bogey and target to be measured；
The weight of target to be measured is determined according to described force value T.
2. method for measuring weight according to claim 1, it is characterised in that obtain described force value T according to sensor output voltage.
3. method for measuring weight according to claim 1, it is characterised in that the relation between weight and the force value T of target to be measured is: M=k1*T/g-m0, wherein M is the weight of target to be measured, m0For the weight of bogey, k1For constant, constant k1Depend on the position relationship of described screw mandrel and described support.
4. method for measuring weight according to claim 1, it is characterised in that also comprise the steps: the corresponding relation prestoring between weight and the force value T of target to be measured；According to the corresponding relation between described force value T and weight and the force value T of target to be measured that prestore, it is determined that the weight of target to be measured.
5. there is the examinating couch of heavy measuring function, it is characterised in that including:
Bogey, is used for carrying target to be measured；
Support, is used for supporting described bogey；
Feed screw nut, fixes with described support and is connected；
Screw mandrel, run through described feed screw nut and with described feed screw nut with the use of；And
Sensor, described sensor is fixing with described feed screw nut to be connected, for obtaining the force value T being applied on feed screw nut by bogey and target to be measured；
Processor, for determining the weight of target to be measured according to force value T.
6. examinating couch according to claim 5, it is characterised in that described sensor is circulus, and it is socketed on described feed screw nut, the weight of described bogey and target to be measured is applied on described feed screw nut by described sensor.
7. examinating couch according to claim 6, it is characterised in that also include the spacing ring for preventing described sensor and described feed screw nut from mutually rotating, described spacing ring is connected to feed screw nut periphery, and fixing with described sensor is connected.
8. examinating couch according to claim 5, it is characterized in that, described support includes the shears fork structure of the first pole and the second pole interconnection composition, described two poles are flexibly connected by rotating shaft, described motor and the fixing connection of the first pole, described screw mandrel is connected with described second pole by described feed screw nut.
9. examinating couch according to claim 5, it is characterized in that, described support includes the first shears fork structure and the second shears fork structure, described first, second shears crotch structure is made up of two pole interconnections respectively, two poles of described shears fork structure are flexibly connected by rotating shaft, described motor is fixed on two pole junctions of described first shears fork structure, and described feed screw nut is fixed on two pole junctions of described second shears fork structure.
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| CN201610124730.1A CN105806460A (en) | 2016-03-04 | 2016-03-04 | Weight measuring method used for checking bed and checking bed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111765955A (en) * | 2020-07-09 | 2020-10-13 | 湖南润天智科机械制造有限公司 | Novel material metering device |
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| CN105078502A (en) * | 2014-04-16 | 2015-11-25 | 上海联影医疗科技有限公司 | Examination couch |
| CN104173050A (en) * | 2014-07-08 | 2014-12-03 | 上海联影医疗科技有限公司 | Vertical lifting mechanism, lifting sickbed and medical examination equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111765955A (en) * | 2020-07-09 | 2020-10-13 | 湖南润天智科机械制造有限公司 | Novel material metering device |
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Application publication date: 20160727 |