CN204293135U - A kind of Pressure stimulation experimental rig, system - Google Patents
A kind of Pressure stimulation experimental rig, system Download PDFInfo
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- CN204293135U CN204293135U CN201420736951.0U CN201420736951U CN204293135U CN 204293135 U CN204293135 U CN 204293135U CN 201420736951 U CN201420736951 U CN 201420736951U CN 204293135 U CN204293135 U CN 204293135U
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Abstract
The utility model discloses a kind of Pressure stimulation experimental rig, system, wherein said system mainly comprises Pressure stimulation experimental rig, PC control system, PLC and stepper motor driver; In concrete structure Pressure stimulation experimental rig by comprise force assembly and described force assembly coaxially arrange arrange dynamometry assembly.Pressure stimulation experimental rig, system that the utility model provides, by control system, Automated condtrol is carried out to Pressure stimulation experimental rig, can accurately execute stressed control by Automated condtrol Pressure stimulation experimental rig, and carry out feedback regulation by the pressure measurement signal of actual feedback and compensate again; Guarantee that test pressure result that Pressure stimulation is tested is all accurately real, and can provide and obtain true accurate result of the test, reach test requirements document.
Description
Technical field
The utility model relates to medicine equipment equipment technology field, especially relates to a kind of Pressure stimulation experimental rig, system.
Background technology
In clinical medicine and preclinical medicine field, often need to apply pressure to human body or animal body, to reaching the pain sensation that Pressure stimulation brings out in the serial pain scientific researches such as manufacture experimental model, Pain scale evaluation, the relevant expression of pain, behavior and physiological parameter change.The equipment of traditional mechanicalness nocuity Pressure stimulation Provocative pain can not reach the requirement of Long-distance Control, precisely control, usually experimenter's hand-held is needed, and in the process of Pressure stimulation Provocative pain, the controllability that there is force value and time variable is poor, precision is low, the problems such as data feedback is imperfect, thus affect the accuracy of pain scientific research, pain clinical evaluation.
Therefore, the mode institute applied pressure value precision of the Pressure stimulation Provocative pain of prior art is low, controllability is poor, the duration of pain stimulus and the interval time of adjacent stimulation all cannot accurately control, and do not possess pressure feedback and regulatory function again, the poor safety performance in experimentation.Meanwhile, the execute-in-place of experimenter produces psychological impact to experimenter or animal used as test to a certain extent, and the mode of the Pressure stimulation Provocative pain of prior art cannot realize re-set target obviously.
In sum, how overcoming technological deficiency of the prior art is those skilled in the art's technical problems urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide a kind of Pressure stimulation experimental rig, system, to solve the problems of the technologies described above.
In order to achieve the above object, the technical solution of the utility model is achieved in that
A kind of Pressure stimulation experimental rig that the utility model provides, comprise force assembly and described force assembly coaxially arrange arrange dynamometry assembly, wherein:
Described force assembly comprises the motor, leading screw, ball-screw nut, connecting plate, linear bearing, feed rod, compression spring, force-bearing table and the force bearing plate that set gradually; Described motor is connected with described leading screw coaxial rotation; Described leading screw is threaded with described ball-screw nut; One end of described connecting plate is fixedly connected on the top of described ball-screw nut; The other end of described connecting plate is fixedly connected on the top of described linear bearing; Described linear bearing, described connecting plate and described compression spring are socketed from bottom to top successively along described feed rod, and the contact of described connecting plate connects the bottom of described compression spring; Described compression spring upper end is connected with end in contact under described force-bearing table; Described force-bearing table contacts with described force bearing plate and connects;
Described dynamometry assembly comprises the top cover, weighing and force-measuring transducer, the pressure contact head that set gradually from top to bottom; Wherein, the bottom of described top cover is provided with the track cavity for sliding as described force-bearing table; Be arranged in order from top to bottom in the described track cavity of described top cover and described weighing and force-measuring transducer, described pressure contact head, described force bearing plate and described force-bearing table are set; Described weighing and force-measuring transducer is arranged between the bottom surface of described top cover and described pressure contact head, and is electrically connected with described pressure contact head; The bottom of described pressure contact head and the end face of described force bearing plate are fitted, separable under actual working state; Under actual working state, the bottom of described pressure contact head is separated with between the end face of described force bearing plate, forms test cavity, and described test cavity is used for fixing stressed human body.
Preferably, can embodiment as one, described Pressure stimulation experimental rig also comprises frame; Described force assembly also comprises the bearing plate of the bottom being arranged on described motor, and described bearing plate is fixedly connected with described motor with described frame respectively; Described frame is also fixedly connected with by bearing with the two ends of described screw mandrel.
Preferably, can embodiment as one, described force assembly also comprises the shaft coupling of the bottom being arranged on described motor: the two ends of described shaft coupling are connected with described leading screw key with the output shaft of described motor respectively.
Preferably, can embodiment as one, described force assembly also comprises the deep groove ball bearing on the top being arranged on described leading screw, and described deep groove ball bearing becomes bearing fit to be connected with the top of described leading screw.
Preferably, can embodiment as one, described force assembly also comprises the thrust bearing of the tail end arranging described leading screw, and described thrust bearing becomes bearing fit to be connected with the tail end of described leading screw.
Preferably, can embodiment as one, described dynamometry assembly also comprises linear bearing; Described linear bearing is vertically fixedly connected in described frame, and described linear bearing and described connecting plate are slidably connected.
Preferably, can embodiment as one, in described dynamometry modular construction, described pressure contact head and described force bearing plate removably connect.Described connecting plate is steel plate.
Preferably, can embodiment as one, in described force modular construction, described motor is stepper motor; Described compression spring is cylindrical helical compression spring.
Correspondingly, the utility model additionally provides a kind of Pressure stimulation pilot system, comprises above-mentioned Pressure stimulation experimental rig, also comprises control system;
Described control system specifically comprises PC control system, PLC and stepper motor driver;
Described PC control system is connected with described PLC and described weighing and force-measuring transducer serial communication respectively;
Described PLC is electrically connected with described stepper motor driver; Described stepper motor driver is electrically connected with described motor.
Compared with prior art, the advantage of the utility model embodiment is:
A kind of Pressure stimulation experimental rig, system that the utility model provides, the mechanical actuating mechanism analyzing above-mentioned Pressure stimulation experimental rig is known: as motive power outputting apparatus direct in dynamometry assembly, it is fixed in frame motor, and it will drive shaft coupling and leading screw coaxial rotation in rotary course; Because leading screw is threaded with ball-screw nut, these parts above-mentioned like this constitute " thread screw transmission mechanism ".When leading screw rotates with different rotation directions, the movement that the ball-screw nut that its leading screw coordinates also will carry out straight up or straight down; Such as: when connecting plate moves straight up (in the process because one end of connecting plate is fixedly connected on the top of ball-screw nut; The other end of connecting plate has been fixedly connected with on the compression spring in side force assembly; Namely the other end of compression spring and connecting plate is socketed from bottom to top successively along feed rod), compressive deformation is also produced elastic deformation by the compression spring in measurement components.Finally by force-bearing table, force bearing plate, pressure contact head, weighing and force-measuring transducer, top cover realization pressure transmission step by step.Test cavity be used for fixing stressed thing (such as, human finger) owing to being formed between the bottom surface of force bearing plate and the end face of force-bearing table; Motor output power is through a series of mechanical linkage and power conversion in the process, and input rotational mechanical energy is converted into amount of spring compression, produces the pressure of different size, achieves the pain stimulus of different pressures).Wherein, when pressure finally passes to weighing and force-measuring transducer, weighing and force-measuring transducer can also detect according to pressure the force value obtaining actual output, and send PC control system (the i.e. PC communicating with connection to, or title host computer, concrete connected mode belongs to prior art).
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model detailed description of the invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in detailed description of the invention or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the Pressure stimulation experimental rig that Fig. 1 provides for the utility model embodiment;
The structural principle schematic diagram of the Pressure stimulation pilot system that Fig. 2 provides for the utility model embodiment;
Reference numeral:
1-motor; 2-bearing plate; 3-shaft coupling;
4-deep groove ball bearing; 5-leading screw; 6-ball-screw nut;
7-thrust bearing; 8-feed rod; 9-linear bearing;
10-connecting plate; 11-compression spring; 12-force-bearing table;
13-force bearing plate; 14-pressure contact head; 15-weighing and force-measuring transducer;
16-top cover; 100-Pressure stimulation experimental rig; 101-PC control system;
102-PLC controller; 103-stepper motor driver.
Detailed description of the invention
Be clearly and completely described the technical solution of the utility model below in conjunction with accompanying drawing, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
In description of the present utility model, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
Also by reference to the accompanying drawings the utility model is described in further detail below by specific embodiment.
See Fig. 1, a kind of Pressure stimulation experimental rig that the utility model embodiment provides, comprise force assembly and described force assembly coaxially arrange arrange dynamometry assembly, wherein:
Described force assembly comprises the motor 1, leading screw 5, connecting plate 10, ball-screw nut 6, feed rod 8, linear bearing 9, compression spring 11, force-bearing table 12 and the force bearing plate 13 that set gradually; Described motor 1 is connected with described leading screw 5 coaxial rotation; Described leading screw 5 is threaded with described ball-screw nut 6; One end of described connecting plate 10 is fixedly connected on the top of described ball-screw nut 6; The other end of described connecting plate 10 is fixedly connected on the top of described linear bearing 9; Described linear bearing 9, described connecting plate 10 and described compression spring 11 are socketed from bottom to top successively along described feed rod 8, and described connecting plate 10 contacts the bottom connecting described compression spring 11; The 12 times end in contact in described compression spring 11 upper end and described force-bearing table are connected; Described force-bearing table 12 contacts with described force bearing plate 13 and connects; It should be noted that, connecting plate is namely for being connected and fixed force assembly and the substrate of dynamometry assembly, and it can choice for use multiple material, such as: as one preferred embodiment choice for use steel plate as connecting plate; Above-mentioned motor can select servomotor or stepper motor, variable-frequency motor etc., is not limited to use stepper motor; Just as most preferred embodiment, can choice for use stepper motor as driving power source.
Described dynamometry assembly comprises the top cover 16, weighing and force-measuring transducer 15 and the pressure contact head 14 that set gradually from top to bottom; Wherein, the bottom of described top cover 16 is provided with the track cavity for sliding as described force-bearing table 12; Be arranged in order from top to bottom in the described track cavity of described top cover 16 and described weighing and force-measuring transducer 15, described pressure contact head 14, described force bearing plate 13 and described force-bearing table 12 are set; Described weighing and force-measuring transducer 15 is arranged between the bottom surface of described top cover 16 and described pressure contact head 14, and is electrically connected with described pressure contact head 14; The bottom of described pressure contact head 14 and the end face of described force bearing plate 13 are fitted, separable under actual working state; Under actual working state, the bottom of described pressure contact head 14 is separated with between the end face of described force bearing plate 13, and described test cavity is used for fixing stressed human body.
It should be noted that, above-mentioned connecting plate, above-mentioned cylindrical screw compression spring and above-mentioned force-bearing table spread configuration; The pressure that described force-bearing table transmits for accepting the described cylindrical screw compression spring in below, is transferred sequentially to the stressed thing (as finger, namely finger can realize the body part of pain test as human body) above force bearing plate; Top cover can also play certain dust-proof, fixation, and meanwhile above-mentioned top cover will as force-bearing table sliding rail.
It should be noted that, in the utility model embodiment is how to carry out control can select multiple control modes about motor, such as: with the use of PLC and motor driver, motor is controlled, frequency converter can also be selected or analog circuit controls motor; But preferably can embodiment as one, the combination of PLC and motor driver and stepper motor should be selected.
Below the concrete structure of the Pressure stimulation experimental rig that the utility model embodiment provides is done and describes in detail:
In the structure of concrete Pressure stimulation experimental rig, above-mentioned Pressure stimulation experimental rig specifically also comprises frame; Described force assembly also comprises the bearing plate 2 of the bottom being arranged on described motor, and described bearing plate 2 is fixedly connected with described motor 1 with described frame respectively; Namely bearing plate mainly motor is fixed in frame; Described frame is also fixedly connected with by bearing with the two ends of described screw mandrel.
Particularly, described force assembly also comprises the shaft coupling 3 of the bottom being arranged on described motor: the two ends of described shaft coupling 3 are connected with described leading screw 5 key with the output shaft of described motor 1 respectively.
It should be noted that, the connected mode namely connected by above-mentioned key is known: above-mentioned shaft coupling main starting power transmission effect, and electric machine rotation moment of torsion can be passed to leading screw by it, and then realizes the coaxial rotation (namely coaxial rotation connects) of leading screw;
Particularly, described force assembly also comprises the deep groove ball bearing 4 on the top being arranged on described leading screw 5, and described deep groove ball bearing 4 becomes bearing fit to be connected with the top of described leading screw 5.Described force assembly also comprises the thrust bearing 7 of the tail end arranging described leading screw, and described thrust bearing 7 becomes bearing fit to be connected with the tail end of described leading screw 5.
It should be noted that, namely above-mentioned deep groove ball bearing is mainly used in the top of fixing leading screw.But thrust bearing its can bear the load of vertical direction, it is mainly used in the tail end of fixing leading screw; Thrust bearing is used to the special bearing bearing axial force specially, and it bears the ability of the power load in the parallel direction of axle and acts on more outstanding.
Particularly, described dynamometry assembly also comprises linear bearing 9; Described linear bearing 9 is vertically fixedly connected in described frame, and described linear bearing 9 and described connecting plate 10 are slidably connected.
Particularly, in described dynamometry modular construction, described pressure contact head 14 removably connects with described force bearing plate 13.It should be noted that, by the exchange of different pressure contact heads, most suitable condition of exerting pressure can be realized;
Particularly, in described force modular construction, described motor 1 is stepper motor; Described compression spring 11 is cylindrical helical compression spring.
As shown in Figure 1, below each composition structure structure concrete of the Pressure stimulation experimental rig in the utility model embodiment is done respectively and is briefly introduced:
Motor 1 (being stepper motor wherein in an embodiment): directly being controlled by stepper motor driver, is the input of mechanical system part, power source; Bearing plate 2: stepper motor is fixed in frame; Shaft coupling 3: starting power transmission effect, passes to screw turns by electric machine rotation; Deep groove ball bearing 4: fixing leading screw; Leading screw 5: forms of motion transforms, and screw turns is converted into the rectilinear motion of ball-screw nut; Ball-screw nut 6: form ball guide screw nat with leading screw; Thrust bearing 7: fix leading screw, bear the load of vertical direction; Feed rod 8:(1), transmit rectilinear motion, for linear bearing and force bearing plate provide the track (2) of rectilinear motion, the guide rod as spring, prevent spring unstability; Linear bearing 9: transmit rectilinear motion; Connecting plate 10 (i.e. steel plate): connect firmly ball-screw nut and linear bearing; Compression spring 11 (namely it refers in particular to cylindrical screw compression spring in the preferred embodiment of one): power conversion, is converted into spring potential energy and realizes specified pressure by straight-line displacement; Force-bearing table 12: accept below spring pressure, passes to the stressed thing (as finger) above force bearing plate; Force bearing plate 13: fixing stressed object location; Pressure contact head 14: by the exchange of different pressure contact heads, realizes most suitable condition of exerting pressure; Weighing and force-measuring transducer 15: detect force, feedback force; Top cover 16: dust-proof, fixing, as force-bearing table sliding rail.
It should be noted that, the mechanical actuating mechanism analyzing above-mentioned Pressure stimulation experimental rig is known: as motive power outputting apparatus direct in dynamometry assembly, it is fixed in frame motor, and it will drive shaft coupling and leading screw coaxial rotation in rotary course; Because leading screw is threaded with ball-screw nut, these parts above-mentioned like this constitute " thread screw transmission mechanism ".When leading screw rotates with different rotation directions, the movement that the ball-screw nut that its leading screw coordinates also will carry out straight up or straight down; Such as: when connecting plate moves straight up (in the process because one end of connecting plate is fixedly connected on the top of ball-screw nut; The other end of connecting plate has been fixedly connected with on the compression spring in side force assembly; Namely the other end of compression spring and connecting plate is socketed from bottom to top successively along feed rod), compressive deformation is also produced elastic deformation by the compression spring in measurement components.Finally by force-bearing table, force bearing plate, pressure contact head, weighing and force-measuring transducer, top cover realization pressure transmission step by step.Test cavity be used for fixing stressed thing (such as, human finger) owing to being formed between the bottom surface of force bearing plate and the end face of force-bearing table; Motor output power is through a series of mechanical linkage and power conversion in the process, and input rotational mechanical energy is converted into amount of spring compression, produces the pressure of different size, achieves the pain stimulus of different pressures.)。Wherein, when pressure finally passes to weighing and force-measuring transducer, weighing and force-measuring transducer can also detect according to pressure the force value obtaining actual output;
It should be noted that, the communication connection (namely in Fig. 2, Serial Port Line illustrates relevant connection relation) that PC control system and weighing and force-measuring transducer and PLC are all set up; Particularly, there is interface and be connected (such as: other bus serial modes such as RS232 bus serial ports, RS485 bus serial ports) in weighing and force-measuring transducer and PC control system; PLC in the utility model embodiment can adopt different communications protocol and host computer (i.e. PC or claim PC control system) to be connected, can by the serial communication of RS232, or by RS485 serial communication, when with the serial communication that not only can adopt traditional D form when host computer (i.e. PC) and PLC communication, the PROFIBUS-DP communication of the two-wire being more suitable for Industry Control can also be adopted.Selection about communications module belongs to the common practise that those skilled in the art can understand, and the utility model embodiment repeats no more this.Namely PC or title PC control system are directly communicated with field programmable logic controller by Serial Port Line, in PC layoutprocedure, need to arrange serial ports attribute mate with on-the-spot PLC serial ports, serial ports attribute mainly contains: baud rate, position of rest, even-odd check, data bit, current control.Before setting up wireless communication link, network communication protocol (described network communication protocol is transmission control protocol/Internet protocol (TCP/IP)) is set, after successfully setting up communication, PLC receives the data gathered and the control instruction received from server (i.e. PC control system), realizes controlling in real time.The pressure size detected by communication interface and weighing and force-measuring transducer like this feeds back to control system so that realize follow-up pressure compensation.
Whether particularly, PC control system (i.e. PC) differentiates feedback signal, determine to compensate power; Namely PC control system judges when actual output pressure value is less than required output pressure value, can realize pressure compensation again control by PLC; PC control system judges when actual output pressure value is greater than required output pressure value, namely the control that can be reduced pressure input by PLC again (above-mentionedly can be realized by the connected mode of host computer, PLC, all belong to existing mature technology about program part, this utility model embodiment is repeated no longer one by one).
Correspondingly, see Fig. 2, the utility model embodiment still provides a kind of Pressure stimulation pilot system, comprises above-mentioned Pressure stimulation experimental rig 100, also comprises control system;
Described control system specifically comprises PC control system 101, PLC 102 and stepper motor driver 103,
Described PC control system is connected with described PLC and described weighing and force-measuring transducer serial communication respectively;
Described PLC is electrically connected with described stepper motor driver; Described stepper motor driver is electrically connected with described motor.
Analyze above-mentioned Pressure stimulation test system architecture known, it mainly contains machinery and performs part and control section two parts composition; Wherein control section is primarily of compositions such as PC control system, PLC and stepper motor drivers;
The control that above-mentioned PC control system is realized by software application (comprising each processing module) on the basis of its PC hardware: the control that the force value preset first arranged by user, number of times, the input parameter value of time have PLC control step motor driver can realize stepper motor again.The pulse signal generator of PLC produces series output signal, stepper motor driver and stepper motor are controlled, (power source is through a series of mechanical linkage and power conversion subsequently to form power source, input rotational mechanical energy is converted into amount of spring compression, produce the pressure of different size, achieve the pain stimulus of different pressures.), control system completes rotating speed to stepper motor, assigned frequency and duration, moment of torsion etc. and carries out regulable control in the process; But its rotating speed of stepper motor, assigned frequency and the factor such as duration, moment of torsion all can determine the amount of elastic deformation (and then affect it execute stressed size) of the cylindrical helical compression spring in the dynamometry assembly of above-mentioned force Component driver offside; Accurate Pressure stimulation (namely quantitative applying pressure pain stimulus) can be realized eventually through control system; meanwhile change and regulate the Controlling vertex of assigned frequency in PLC and duration; just the accurate control and regulation (control about PLC timing node, frequency node belongs to known technology, will not protect this utility model embodiment) of single " pain stimulus duration " and repeatedly " pain stimulus apply interval time " can be realized.
Finally, PC control system can also receive the actual output pressure value (i.e. feedback signal) that weighing and force-measuring transducer detects; Subsequently feedback signal is differentiated determine whether power is compensated.
The above-mentioned Pressure stimulation pilot system that the utility model embodiment provides, mainly through stepper motor driver (namely to the control of stepper motor driver, the utility model embodiment is not only limited to the control system of PLC, PC composition, it can also be the control system of analog circuit, can also be the equipment such as frequency converter) can accurately execute stressed control in conjunction with Pressure stimulation experimental rig, and carry out measurement feedback by the pressure measurement signal of actual feedback; Guarantee that test pressure result that Pressure stimulation is tested is all accurately real, and can provide and obtain true accurate result of the test, reach test requirements document.
Pressure stimulation experimental rig, system that the utility model embodiment provides, wherein applying pressure irritant test system can experimentally demand, controls the power applying corresponding size, thus realizes the pain stimulus of given level.Meanwhile, it combines Design of Mechanical Structure cleverly and achieves quantitative applying pressure pain stimulus and control, the accurate control of the control of single " pain stimulus duration " and repeatedly " pain stimulus applies interval time ".By the control system of this instrument, can realize repeatedly, regularly, determine frequency, quantitative accurate pain stimulus.Therefore, Pressure stimulation experimental rig, system that the utility model embodiment provides, attainable function is more various, and it is more convenient to operate, and result of the test is true and reliable.
Last it is noted that above each embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (10)
1. a Pressure stimulation experimental rig, is characterized in that,
Comprise force assembly and dynamometry assembly, wherein:
Described force assembly comprises the motor, leading screw, ball-screw nut, connecting plate, linear bearing, feed rod, compression spring, force-bearing table and the force bearing plate that set gradually; Described motor is connected with described leading screw coaxial rotation; Described leading screw is threaded with described ball-screw nut; One end of described connecting plate is fixedly connected on the top of described ball-screw nut; The other end of described connecting plate is fixedly connected on the top of described linear bearing; Described linear bearing, described connecting plate and described compression spring are socketed from bottom to top successively along described feed rod, and the contact of described connecting plate connects the bottom of described compression spring; Described compression spring upper end is connected with end in contact under described force-bearing table; Described force-bearing table contacts with described force bearing plate and connects;
Described dynamometry assembly comprises the top cover, weighing and force-measuring transducer, the pressure contact head that set gradually from top to bottom; Wherein, the bottom of described top cover is provided with the track cavity for sliding as described force-bearing table; Be arranged in order from top to bottom in the described track cavity of described top cover and described weighing and force-measuring transducer, described pressure contact head, described force bearing plate and described force-bearing table are set; Described weighing and force-measuring transducer is arranged between the bottom surface of described top cover and described pressure contact head, and is electrically connected with described pressure contact head; The bottom of described pressure contact head and the end face of described force bearing plate are fitted, separable under actual working state; Under actual working state, the bottom of described pressure contact head is separated with between the end face of described force bearing plate, forms test cavity, and described test cavity is used for fixing stressed human body.
2. Pressure stimulation experimental rig according to claim 1, is characterized in that,
Described Pressure stimulation experimental rig also comprises frame; Described force assembly also comprises the bearing plate of the bottom being arranged on described motor, and described bearing plate is fixedly connected with described motor with described frame respectively; Described frame is also fixedly connected with by bearing with the two ends of described screw mandrel.
3. Pressure stimulation experimental rig according to claim 1, is characterized in that,
Described force assembly also comprises the shaft coupling of the bottom being arranged on described motor: the two ends of described shaft coupling are connected with described leading screw key with the output shaft of described motor respectively.
4. Pressure stimulation experimental rig according to claim 1, is characterized in that,
Described force assembly also comprises the deep groove ball bearing on the top being arranged on described leading screw, and described deep groove ball bearing becomes bearing fit to be connected with the top of described leading screw.
5. Pressure stimulation experimental rig according to claim 1, is characterized in that,
Described force assembly also comprises the thrust bearing of the tail end arranging described leading screw, and described thrust bearing becomes bearing fit to be connected with the tail end of described leading screw.
6. Pressure stimulation experimental rig according to claim 1, is characterized in that,
Described dynamometry assembly also comprises linear bearing; Described linear bearing is vertically fixedly connected in described frame, and described linear bearing and described connecting plate are slidably connected.
7. Pressure stimulation experimental rig according to claim 1, is characterized in that,
In described dynamometry modular construction, described pressure contact head and described force bearing plate removably connect.
8. Pressure stimulation experimental rig according to claim 1, is characterized in that,
Described connecting plate is steel plate.
9. Pressure stimulation experimental rig according to claim 1, is characterized in that,
In described force modular construction, described motor is stepper motor; Described compression spring is cylindrical helical compression spring.
10. a Pressure stimulation pilot system, is characterized in that, comprises the Pressure stimulation experimental rig as described in claim 1-9, also comprises control system;
Described control system specifically comprises PC control system, PLC and stepper motor driver;
Described PC control system is connected with described PLC and described weighing and force-measuring transducer serial communication respectively;
Described PLC is electrically connected with described stepper motor driver; Described stepper motor driver is electrically connected with described motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420736951.0U CN204293135U (en) | 2014-11-28 | 2014-11-28 | A kind of Pressure stimulation experimental rig, system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420736951.0U CN204293135U (en) | 2014-11-28 | 2014-11-28 | A kind of Pressure stimulation experimental rig, system |
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| CN204293135U true CN204293135U (en) | 2015-04-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539868A (en) * | 2019-09-23 | 2021-03-23 | 北京远见医疗技术发展有限责任公司 | Method and equipment for detecting internal pressure and surface tangent tension of spherical capsule through surface |
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2014
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539868A (en) * | 2019-09-23 | 2021-03-23 | 北京远见医疗技术发展有限责任公司 | Method and equipment for detecting internal pressure and surface tangent tension of spherical capsule through surface |
| CN112539868B (en) * | 2019-09-23 | 2022-03-11 | 北京远见医疗技术发展有限责任公司 | Method and equipment for detecting internal pressure and surface tangent tension of spherical capsule through surface |
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