CN117883051B - Multi-cylinder-based dynamic-static conversion balance capability testing device and testing method - Google Patents
Multi-cylinder-based dynamic-static conversion balance capability testing device and testing method Download PDFInfo
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Abstract
The invention discloses a balance capability testing device and a balance capability testing method capable of achieving dynamic and static conversion based on multiple cylinders, and relates to the technical field of medical equipment, wherein the balance capability testing device comprises a display module, an armrest module and a testing module; the test module comprises a cylinder assembly, a bottom plate, a supporting plate and a test universal joint; the cylinder assembly comprises a dynamic stiffness control cylinder and a dynamic-static conversion cylinder, wherein the dynamic stiffness control cylinder is connected with a dynamic cylinder branch, a dynamic branch control valve is connected to the dynamic stiffness control cylinder, the dynamic cylinder branch is connected with a dynamic cylinder trunk, and the dynamic cylinder trunk is connected with a dynamic air release valve; the dynamic-static conversion air cylinder is connected with a dynamic-static conversion branch circuit, the dynamic-static conversion branch circuit is connected with a dynamic-static conversion trunk circuit, and the dynamic-static conversion trunk circuit is connected with a dynamic-static conversion air release valve; the dynamic cylinder trunk and the dynamic-static conversion trunk are connected with two air outlets of a two-position three-way reversing valve, and an air inlet of the two-position three-way reversing valve is connected with an air pump. The invention can realize the accurate regulation and control of the dynamic stiffness control cylinder and the dynamic-static conversion cylinder.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a balance capability testing device and method capable of achieving dynamic and static conversion based on multiple cylinders.
Background
Balance capability refers to the ability to maintain body position, particularly on small support surfaces, and to control the body's center of gravity. Balance ability is the basic ability of all static and dynamic activities of humans. Any movement of a person is almost always performed in a state of maintaining the balance of the body, which is influenced by a number of factors, which compensate and interact with each other. The balance capacity is taken as a basic capacity of a human body, plays a very important role in the daily life of normal people, and especially for old people or people suffering from certain diseases, the balance capacity is measured and known in advance, so that the method is beneficial to early warning of certain diseases and targeted training. For example, the fall of the old can be early warned in advance, and the occurrence of the fall can be reduced by performing corresponding training.
The existing balance capacity detection equipment is mainly divided into two types of static balance and dynamic balance. The static balance detection is based on a plantar pressure sensor, so that the balance capacity of a person in a static non-disturbance condition is measured, and the test is not comprehensive enough. To increase the comprehensiveness of the test, a tester is often required to perform specific test actions, such as standing on a single foot, closing the eyes, squatting, and the like, and the procedure is relatively complicated. In addition, the static balance detection equipment is difficult to realize improved training for people with poor balance ability because of difficult movement generation. The detection platform of the dynamic balance detection equipment can automatically generate disturbance after a human body stands, the balance capacity is measured by evaluating the capacity of a person to be detected to control the human body so as to reduce the disturbance amplitude, and the balance capacity is tested more comprehensively and accurately by the test equipment. Meanwhile, the dynamic balance detection equipment has the characteristic of free disturbance, so that rehabilitation training corresponding to the balance capacity can be realized through the setting of a specific action curve and a program.
The dynamic balance is realized by combining an inertial sensor or a plantar pressure sensor with a corresponding mechanism with a disturbance function. Such as the manner of adding an air bag to the inertial sensor Korebalance, and the media bag manner proposed by the prior patents ZL202111596258.9, CN202211475757.7 and CN202210804826.8 based on the modes of water bags and plantar pressure sensors. However, the size of the air bag and the water bag adopted by the equipment is relatively large, so that the equipment is easy to occupy a large space, and is unfavorable for the layout of related parts, so that the size of the equipment is large. Meanwhile, the medium bags of the equipment are required to be filled with medium and pressure is regulated due to large volume, so that long time is required, and the operation is inconvenient.
Aiming at the problems, the prior art also provides a balancing capability testing device capable of dynamic and static conversion based on multiple cylinders, which is disclosed in patent application number 202311020188.1. However, the lower cavities of the dynamic stiffness control cylinders are set to be in a communicated state, the arrangement enables gas in each cavity to circulate among the cavities when the working surface moves, so that the working surface is difficult to reset, and particularly as shown in fig. 8 or 9, if a tested person steps on any dynamic stiffness control piston cylinder, the telescopic rod of the dynamic stiffness control piston cylinder descends, but the telescopic rods of other dynamic stiffness control piston cylinders extend upwards, so that the telescopic rods are uncontrolled and cannot move according to the expected track.
Therefore, there is a need in the art for a balancing capability testing device and testing method based on multiple cylinders and capable of dynamic and static conversion, which are used for solving the above problems.
Disclosure of Invention
The invention aims to provide a balance capability testing device and a balance capability testing method capable of achieving dynamic and static conversion based on multiple cylinders, which are used for solving the technical problems in the prior art and realizing independent control of a dynamic stiffness control cylinder and a dynamic and static conversion cylinder, so that the dynamic stiffness control cylinder and the dynamic and static conversion cylinder can operate according to an expected track.
In order to achieve the above object, the present invention provides the following solutions:
The invention discloses a balance capability testing device capable of moving and static conversion based on multiple cylinders, which comprises a display module, an armrest module and a testing module, wherein the display module and the testing module are respectively arranged at the upper end and the lower end of the armrest module, the display module is electrically connected with the testing module, and the display module is used for displaying related data of the testing module;
The test module comprises a cylinder assembly, a bottom plate, a supporting plate and a test universal joint, wherein the cylinder assembly is fixed on the bottom plate, each telescopic end in the cylinder assembly is abutted against the supporting plate, and two ends of the test universal joint are respectively fixed at the central positions of the bottom plate and the supporting plate;
The cylinder assembly comprises a plurality of dynamic stiffness control cylinders and a plurality of dynamic and static conversion cylinders, wherein an upper cavity interface of each dynamic stiffness control cylinder is used for being connected with the atmosphere, a lower cavity interface of each dynamic stiffness control cylinder is connected with a dynamic cylinder branch, each dynamic cylinder branch is connected with a dynamic branch control valve, each dynamic branch control valve is used for controlling the on-off of each dynamic cylinder branch, one end, far away from each dynamic stiffness control cylinder, of each dynamic cylinder branch is connected with a dynamic cylinder trunk, each dynamic cylinder trunk is connected with a dynamic air release valve, and the dynamic air release valve can be communicated with the atmosphere when in an open state;
The upper cavity interface of the dynamic-static conversion cylinder is used for being connected with the atmosphere, the lower cavity interface of the dynamic-static conversion cylinder is connected with a dynamic-static conversion branch, one end of the dynamic-static conversion branch, which is far away from the dynamic-static conversion cylinder, is connected with a dynamic-static conversion main circuit, and the dynamic-static conversion main circuit is connected with a dynamic-static conversion air release valve which can be communicated with the atmosphere when in an open state;
the dynamic cylinder trunk is far away from one end of the dynamic cylinder branch and one end of the dynamic-static conversion trunk is far away from the dynamic-static conversion branch and is respectively connected to two air outlets of the two-position three-way reversing valve, and an air inlet of the two-position three-way reversing valve is connected with an air pump.
Preferably, a sensor assembly is further arranged on the supporting plate, and the sensor assembly comprises a plurality of film pressure sensors and/or accelerometers.
Preferably, the display module comprises a display screen body, a display screen fixing rod and a display screen universal joint, one end of the display screen universal joint is fixed at the upper end of the display screen fixing rod, the other end of the display screen universal joint is connected with the display screen body, and the lower end of the display screen fixing rod is used for being connected with the handrail module.
Preferably, the handrail module comprises a front handrail and two side handrails, wherein the two side handrails are respectively fixed at two ends of the front handrail, and the front handrail is provided with a handrail rod.
Preferably, the front armrest is connected with the test module through a support rod;
the front handrail is provided with two handrail connecting holes on one surface far away from the side handrail, the lower end of the display screen fixing rod and the upper end of the supporting rod are respectively inserted into the two handrail connecting holes, the bottom of the front handrail is also provided with a handrail threaded hole, the handrail threaded hole is in threaded connection with a first fastening knob, and the first fastening knob is also in threaded connection with the display screen fixing rod and the supporting rod;
the testing module is provided with a connecting part, a side wall of the connecting part is provided with a testing threaded hole, the lower end of the supporting rod is sleeved on the outer side of the connecting part, and the testing module further comprises a second fastening knob which passes through the lower end of the supporting rod and then is in threaded connection with the testing threaded hole.
Preferably, a shell is sleeved outside the test module.
Preferably, a controller is further arranged in the shell, a control screen is arranged on the side wall of the shell, and the control screen is electrically connected with the controller.
Preferably, the end face of the telescopic end of the dynamic stiffness control cylinder is of an arc surface structure, and the end face of the telescopic end of the dynamic and static conversion cylinder is of a plane structure.
Preferably, the dynamic bypass control valve is provided with two working positions: when in working position, the lower cavity of the dynamic stiffness control cylinder is connected with the air pump or the outside; when the second working position is adopted, the connection between the air pump or the outside and the lower cavity of the dynamic stiffness control cylinder is cut off, and the air is sealed in the lower cavity of the dynamic stiffness control cylinder and the pressure is kept;
the dynamic air release valve has two working positions: when the dynamic stiffness control cylinder is in a working position, the dynamic air release valve is communicated with the atmosphere, and the pressure of the lower cavity in the dynamic stiffness control cylinder is discharged or reduced after passing through the independent dynamic branch control valve; when the working position II is at the working position II, the dynamic air release valve is not communicated with the outside atmosphere, and the dynamic air release valve is used for discharging or decompressing the gas in the lower cavity of the dynamic stiffness control cylinder to the atmosphere;
the dynamic-static conversion cylinder has two working positions: the first working position is that the two-position three-way reversing valve is connected with a dynamic-static conversion trunk, the dynamic-static conversion air release valve is closed, the lower cavity of the dynamic-static conversion air cylinder is filled with air to rated pressure, the upper cavity of the dynamic-static conversion air cylinder is opposite to the atmosphere, and the piston rod of the dynamic-static conversion air cylinder is in contact with the supporting plate to jack up the piston rod; and when the working position II is in a working position II, the two-position three-way reversing valve is connected with the dynamic cylinder trunk, the dynamic-static conversion air release valve is opened, and the upper cavity and the lower cavity of the dynamic-static conversion cylinder are communicated with the atmosphere.
The invention also discloses a balance capability test method based on the dynamic and static conversion of the multiple cylinders, which comprises three working states of the dynamic stiffness control cylinder and the dynamic and static conversion cylinder together:
The dynamic stiffness control cylinder has the following three working states:
The working state is as follows: the method comprises the steps that in a state that the pressure of the gas in the lower cavity of a dynamic stiffness control cylinder is increased, an independent dynamic branch control valve is opened and is communicated with an air pump, a dynamic air release valve is closed to isolate an air path from the atmosphere, gas is filled into the lower cavity of the dynamic stiffness control cylinder at the moment, the upper cavity of the dynamic stiffness control cylinder is connected with the atmosphere, the pressure of the filled gas is detected by a pressure gauge, and when the set pressure is reached, the air filling is finished;
And the working state is as follows: the dynamic stiffness control cylinder is in a test state, at the moment, the independent dynamic branch control valve is closed, the lower cavity of the dynamic stiffness control cylinder is isolated from the atmosphere and the air pump, the air is kept in the dynamic stiffness control cylinder, the dynamic air release valve is opened, so that the dynamic air release valve is communicated with the atmosphere, and the residual air in the air pump is discharged through the dynamic air release valve;
In the third working state, in order to reduce the pressure of the lower cavity of the dynamic stiffness control cylinder, the dynamic branch control valve is opened, the dynamic air release valve is opened, the air pump stops working, and the pressure of the lower cavity of the dynamic stiffness control cylinder is reduced by the designated pressure;
the dynamic stiffness control cylinder and the dynamic-static conversion cylinder are matched in the following three working states:
when the dynamic stiffness control cylinder is inflated, the dynamic branch control valve is opened, the dynamic air release valve is closed, the dynamic and static conversion air release valve is opened, the inlet of the two-position three-way reversing valve is communicated with the dynamic cylinder trunk, at the moment, the lower cavity of the dynamic stiffness control cylinder is connected with the air pump and is isolated from the atmosphere through the dynamic air release valve, the lower cavity of the dynamic and static conversion cylinder is communicated with the atmosphere through the dynamic and static conversion air release valve, and a piston rod in the dynamic and static conversion cylinder moves downwards;
The working state II is that the independent dynamic branch control valve is closed, the lower cavity of the dynamic stiffness control cylinder is isolated from the atmosphere, the two-position three-way reversing valve is connected with the dynamic cylinder trunk, the dynamic air release valve is opened, and the air pump is communicated with the atmosphere through the two-position three-way reversing valve and the dynamic air release valve; when the pressure maintaining work is performed, the dynamic-static conversion air release valve is opened, and the air pump is connected with the dynamic-static conversion trunk through the two-position three-way reversing valve;
And in the working state III, the dynamic branch control valve is opened, the dynamic air release valve is opened, the two-position three-way reversing valve is connected with the dynamic-static conversion main road, the dynamic-static conversion air release valve is closed, the lower cavity of the dynamic stiffness control cylinder is communicated with the atmosphere, and the air of the air pump is filled into the lower cavity of the dynamic-static conversion cylinder to jack up the piston rod of the dynamic-static conversion cylinder to realize static test.
Compared with the prior art, the invention has the following technical effects:
According to the dynamic stiffness control system, the dynamic branch control valve is connected to each dynamic cylinder branch, and the dynamic air release valve is connected to the dynamic cylinder trunk, so that the influence on the motion trail of other dynamic stiffness control cylinders when one dynamic stiffness control cylinder is compressed is avoided, the dynamic stiffness control cylinders are independently controlled and are not interfered with each other, and finally, the dynamic stiffness control cylinders and the dynamic-static conversion cylinders can be tested according to the expected motion trail.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of a balancing capability testing device based on multiple cylinders and capable of dynamic and static conversion according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a test module with a support plate in a multi-cylinder based dynamic-static switching balance capability test device according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a test module without a support plate in a multi-cylinder based dynamic-static switching balance capability test device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a dynamic stiffness control cylinder in a working state in a balancing capability testing device based on dynamic and static conversion of multiple cylinders according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a dynamic stiffness control cylinder in a multi-cylinder based dynamic-static switching balance capability test device in a second working state according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a dynamic stiffness control cylinder in a multi-cylinder based dynamic-static switching balance capability test device in three times when the dynamic stiffness control cylinder is in a working state;
FIG. 7 is a schematic diagram showing the working state of the balancing capability testing device with a dynamic-static switching cylinder based on multiple cylinders according to the embodiment of the present invention;
FIG. 8 is a schematic diagram showing the working state of the balancing capability testing device with a dynamic-static switching cylinder based on multiple cylinders according to the embodiment of the present invention;
FIG. 9 is a schematic diagram showing the working state of the balancing capability testing device with a dynamic-static switching cylinder based on multiple cylinders according to the embodiment of the present invention;
FIG. 10 is a schematic diagram of a back structure of a balancing capability testing apparatus based on multiple cylinders with dynamic and static conversion according to an embodiment of the present invention;
FIG. 11 is a schematic structural diagram of an armrest module in a multi-cylinder based dynamic-static switching balance capability test apparatus according to an embodiment of the present invention;
FIG. 12 is an external schematic view of a testing device in a multi-cylinder based dynamic-static switching balance capability testing device according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of a dynamic stiffness control cylinder in a multi-cylinder based dynamic-static switching balance capability test device according to an embodiment of the present invention;
In the figure: 1-a display module; 11-a display screen body; 12-a display screen fixing rod; 13-a display screen universal joint; 2-armrest modules; 21-a front armrest; 22-side armrests; 23-handrail connecting holes; 24-armrest threaded holes; 3-a test module; 31-a sensor assembly; a 32-cylinder assembly; 33-a bottom plate; 34-a control screen; 35-a housing; 36-connecting part; 37-supporting plate; 38-a dynamic stiffness control cylinder; 39-dynamic-static conversion cylinder; 40-testing the universal joint; 41-dynamic bypass control valve; 42-dynamic air release valve; 43-dynamic-static conversion air release valve; 44-two-position three-way reversing valve; 45-dynamic cylinder branch; 46-dynamic cylinder trunk; 47-dynamic-static conversion branch; 48-dynamic-static conversion trunk; 49-pressure gauge; 4-an air pump; 5-supporting rods; 6-a first tightening knob; 7-a second tightening knob.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a balance capability testing device and a balance capability testing method capable of achieving dynamic and static conversion based on multiple cylinders, which are used for solving the technical problems in the prior art and realizing independent control of a dynamic stiffness control cylinder and a dynamic and static conversion cylinder, so that the dynamic stiffness control cylinder and the dynamic and static conversion cylinder can operate according to an expected track.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1
As shown in fig. 1-13, the present embodiment provides a multi-cylinder based balancing capability testing device capable of dynamic and static conversion, which includes a display module 1, a handrail module 2 and a testing module 3, wherein the display module 1 and the testing module 3 are respectively disposed at the upper and lower ends of the handrail module 2, the display module 1 is electrically connected with the testing module 3, the display module 1 is used for displaying relevant data of the testing module 3, and the handrail module 2 is used for being supported by a tested person.
As shown in fig. 2 to 3, the test module 3 includes a cylinder assembly 32, a base plate 33, a support plate 37, and a test gimbal 40, wherein the cylinder assembly 32 is fixed to the base plate 33, each telescopic end in the cylinder assembly 32 abuts against the lower surface of the support plate 37, and both ends of the test gimbal 40 are fixed to the center positions of the base plate 33 and the support plate 37, respectively. When the device is in a dynamic balance state, the supporting plate 37 can shake in any direction along with the shake of a tester under the support of the test universal joint 40, so that dynamic balance test is realized. The presence of the test gimbal 40 effectively prevents the support plate 37 from moving in the planar direction while the support plate 37 rotates.
The cylinder assembly 32 comprises a plurality of dynamic stiffness control cylinders 38 and a plurality of dynamic and static conversion cylinders 39, wherein the number of the dynamic stiffness control cylinders 38 is 3-9, the stability of the supporting plate 37 can be affected by too little dynamic stiffness control cylinders 38, meanwhile, the force born by each dynamic stiffness control cylinder 38 can be increased, the performance requirement on the dynamic stiffness control cylinders 38 can be improved, and the excessive dynamic stiffness control cylinders occupy the space of equipment. Similarly, the number of the dynamic and static conversion cylinders 39 is 3-9. Specifically, as shown in fig. 3, the dynamic stiffness control cylinder 38 and the dynamic-static conversion cylinder 39 are four (three dynamic-static conversion cylinders 39 are not shown) and are staggered. As shown in fig. 4 to 9, the number of the dynamic stiffness control cylinder 38 and the dynamic-static conversion cylinder 39 is three, and of course, the specific number of the dynamic stiffness control cylinder 38 and the dynamic-static conversion cylinder 39 can be adjusted by those skilled in the art according to actual needs, and is not limited to these two cases. Regarding the specific structures of the dynamic stiffness control cylinder 38 and the dynamic and static conversion cylinder 39, the two are common cylinder structures in the market, and comprise a cylinder body, a piston is arranged in the cylinder body, the piston divides the cylinder body into an upper cavity and a lower cavity, the piston is connected with a telescopic rod (or a piston rod), and an upper cavity interface and a lower cavity interface are arranged on the side wall of the cylinder body and are used for connecting related gas paths.
The upper cavity interface of the dynamic stiffness control cylinder 38 is used for connecting with the atmosphere, the lower cavity interface of the dynamic stiffness control cylinder 38 is connected with dynamic cylinder branches 45, each dynamic cylinder branch 45 is connected with a dynamic branch control valve 41 and a pressure gauge 49, the dynamic branch control valves 41 can adopt the existing common electric control valves, the dynamic branch control valves 41 are used for controlling the on-off of the dynamic cylinder branches 45, namely, when the dynamic branch control valves 41 are closed, the dynamic cylinder branches 45 are closed, and when the dynamic branch control valves 41 are opened, the dynamic cylinder branches 45 are opened. One end of the dynamic cylinder branch 45, which is far away from the dynamic stiffness control cylinder 38, is connected with a dynamic cylinder trunk 46, the dynamic cylinder trunk 46 is connected with a dynamic air release valve 42, the dynamic air release valve 42 can be communicated with the atmosphere when in an open state, and at the moment, the dynamic cylinder trunk 46 and the gas in each dynamic cylinder branch 45 can flow out from the dynamic air release valve 42.
The upper cavity interface of the dynamic-static conversion cylinder 39 is used for connecting with the atmosphere, the lower cavity interface of the dynamic-static conversion cylinder 39 is connected with a dynamic-static conversion branch 47, one end of the dynamic-static conversion branch 47, which is far away from the dynamic-static conversion cylinder 39, is connected with a dynamic-static conversion trunk 48, and the dynamic-static conversion trunk 48 is connected with a dynamic-static conversion air release valve 43, and the dynamic-static conversion air release valve 43 can be communicated with the atmosphere when in an open state.
One end of the dynamic cylinder trunk 46, which is far away from the dynamic cylinder branch 45, and one end of the dynamic and static conversion trunk 48, which is far away from the dynamic and static conversion branch 47, are respectively connected to two air outlets of the two-position three-way reversing valve 44, and an air inlet of the two-position three-way reversing valve 44 is connected with the air pump 4. In actual use, the air pump 4 can be communicated with the dynamic cylinder trunk 46 or the dynamic-static conversion trunk 48 by adjusting the two-position three-way reversing valve 44.
In this embodiment, as shown in fig. 2, the upper surface of the supporting plate 37 is further provided with a sensor assembly 31, and the sensor assembly 31 includes a plurality of film pressure sensors and/or accelerometers, which are conventional sensor elements, and the detected relevant data can be transmitted to the display module 1. The arrangement of the film pressure sensor and the accelerometer is also in the prior art, and reference may be made to the arrangement of the sensors in CN202211475757.7 and CN202210804826.8, so that no further description is given here.
In this embodiment, as shown in fig. 10, the display module 1 includes a display screen body 11, a display screen fixing rod 12 and a display screen universal joint 13, one end of the display screen universal joint 13 is fixed at the upper end of the display screen fixing rod 12, the other end of the display screen universal joint 13 is connected with the display screen body 11, and the display screen body 11 is convenient to adjust in the up-down, left-right directions through the display screen universal joint 13 so as to adapt to the requirements of different testers. The display screen universal joint 13 may not be provided according to actual situations, but the display screen body 11 may be directly fixed to the display screen fixing rod 12. And the lower end of the display screen fixing rod 12 is used for being connected with the armrest module 2.
In the present embodiment, as shown in fig. 11, the armrest module 2 includes a front armrest 21 and two side armrests 22, and the two side armrests 22 are respectively fixed to both rear ends of the front armrest 21 for preventing the subject from tilting in the left-right direction. The front handrail 21 is provided with a handrail rod, and the handrail rod and the front handrail 21 form an annular area, and the handrail rod can be used for preventing the front and rear direction of the tested person from toppling when the tested person stands.
In this embodiment, as shown in fig. 10, the front handrail 21 is connected with the test module 3 through the supporting rod 5, wherein the upper end of the supporting rod 5 is connected with the handrail module 2, and the lower end of the supporting rod 5 is connected with the test module 3, and the specific connection relationship is as follows:
The front handrail 21 is provided with two handrail connecting holes 23 with different sizes on the surface far away from the side handrail 22, the display screen fixing rod 12 is of a J-shaped structure, the upper end of the supporting rod 5 is of a 7-shaped structure, and the lower end of the display screen fixing rod 12 and the upper end of the supporting rod 5 are respectively inserted into the two handrail connecting holes 23. The bottom of the front armrest 21 is also provided with an armrest threaded hole 24, a first fastening knob 6 is in threaded connection with the armrest threaded hole 24, an external threaded column is arranged on the first fastening knob 6, the external threaded column on the first fastening knob 6 is in threaded connection with the display screen fixing rod 12 and the supporting rod 5, and it can be understood that the lower end of the display screen fixing rod 12 and the upper end of the supporting rod 5 are provided with threaded holes corresponding to the first fastening knob 6, so that the first fastening knob 6 can conveniently pass through and be connected.
Similarly, as shown in fig. 12, the test module 3 is provided with a connecting portion 36, a side wall of the connecting portion 36 is provided with a test threaded hole, the lower end of the support rod 5 is sleeved outside the connecting portion 36, the test module further comprises a second fastening knob 7, the second fastening knob 7 is also provided with an external threaded column, and the second fastening knob 7 passes through the lower end of the support rod 5 and is in threaded connection with the test threaded hole, so that the lower end of the support rod 5 is fixed.
Through first fastening knob 6 and second fastening knob 7, be convenient for installation and dismantlement between bracing piece 5, handrail module 2 and the display module 1, convenient operation.
In this embodiment, the outer side of the test module 3 is sleeved with a housing 35. The housing 35 covers the dynamic stiffness control cylinder 38, the dynamic-static switching cylinder 39, the air pump 4, and the like inside, exposing only the portion of the sensor assembly 31 where a person can stand. The housing 35 is preferably of a moderately deformable material and is mounted in the base 33 by a snap-fit arrangement to facilitate its installation and removal.
In this embodiment, a controller is further disposed inside the casing 35, and the controller includes, but is not limited to, a PLC controller or a single-chip microcomputer controller, etc., and a control screen 34 is mounted on a side wall of the casing 35, and the control screen 34 and the cylinder assembly 32 are electrically connected to the controller, and the control screen 34 is convenient for a worker to input an operation instruction.
In this embodiment, in order to further stabilize the support plate 37 in a static state, the end face of the expansion end of the dynamic stiffness control cylinder 38 is recommended to be an arc face structure, and the end face of the expansion end of the dynamic-static conversion cylinder 39 is a planar structure. Further, in order to solve the problem of long-time abrasion of the top end of the piston rod, the top end of the piston rod is in a split structure and is fixed with the piston rod in a threaded mode and the like, and once the piston rod is abraded, the piston rod can be replaced in time.
In the present embodiment, as for the operation principle of the dynamic stiffness control cylinder 38, as can be seen from fig. 4 (three dynamic stiffness control cylinders 38 in fig. 4), the individual dynamic bypass control valves 41 are each provided with two operation positions: in the working position (i.e. the position of the dynamic bypass control valve 41 in fig. 4), the lower cavity of the dynamic stiffness control cylinder 38 is connected with the air pump 4 or the outside; in the second working position (i.e. the position of the dynamic bypass control valve 41 in fig. 5), the connection between the air pump 4 or the outside and the lower chamber of the corresponding dynamic stiffness control cylinder 38 is cut off, and the air is sealed in the lower chamber of the dynamic stiffness control cylinder 38 and the pressure is maintained.
The dynamic bleed valve 42 also has two operating positions: in the operating position (i.e., the operating position of the dynamic relief valve 42 in fig. 5), the dynamic relief valve 42 is vented to atmosphere, venting or reducing the pressure in the lower chamber of the dynamic stiffness control cylinder 38 through the separate dynamic bypass control valve 41; in the second operating position (i.e., the operating position of the dynamic air bleed valve 42 in fig. 4), the dynamic air bleed valve 42 is not in communication with the outside atmosphere. The dynamic air release valve 42 is provided for discharging or decompressing the air inside the lower chamber of the dynamic stiffness control cylinder 38 to the atmosphere; when the air pump 4 has sealing capability or the air exhausting capability is insufficient, the air in the lower cavity of the dynamic stiffness control cylinder 38 can not be effectively exhausted when the pressure is reduced, and the pressure in the dynamic stiffness control cylinder 38 is quickly and timely adjusted.
For the working principle of the dynamic-static conversion cylinder 39, the dynamic-static conversion cylinder 39 has two working positions:
The first working position is that the two-position three-way reversing valve 44 is connected with the dynamic and static conversion trunk 48, the dynamic and static conversion air release valve 43 is closed, the lower cavity of the dynamic and static conversion air cylinder 39 is filled with air to rated pressure, the upper cavity of the dynamic and static conversion air cylinder 39 is opposite to the atmosphere, and the piston rod of the dynamic and static conversion air cylinder 39 is in contact with the supporting plate 37 to jack up the dynamic and static conversion air cylinder.
And in the second working position, the two-position three-way reversing valve 44 is connected with the dynamic cylinder trunk 46, the dynamic-static conversion air release valve 43 is opened, and the upper cavity and the lower cavity of the dynamic-static conversion cylinder 39 are communicated with the atmosphere.
Example two
The embodiment provides a balancing capability testing method based on dynamic and static conversion of multiple cylinders, which is based on the balancing capability testing device based on dynamic and static conversion of multiple cylinders disclosed in the first embodiment, and comprises three working states of a dynamic stiffness control cylinder 38, and three working states of the dynamic stiffness control cylinder 38 and a dynamic and static conversion cylinder 39 together:
as shown in connection with fig. 4-6, the dynamic stiffness control cylinder 38 has the following three operating conditions.
The working state is as follows: in the state of increasing the gas pressure in the lower chamber of the dynamic stiffness control cylinder 38, as shown in fig. 4, the separate dynamic bypass control valve 41 is located at the first working position (i.e., opened) and is communicated with the air pump 4, and the dynamic air release valve 42 is located at the second working position (i.e., closed) so that the air path is isolated from the atmosphere. At this time, gas is filled into the lower chamber of the dynamic stiffness control cylinder 38, and the upper chamber of the dynamic stiffness control cylinder 38 is connected to the atmosphere. The pressure of the gas filled in is detected by the pressure gauge 49, and when the set pressure is reached, the inflation is ended.
And the working state is as follows: the dynamic stiffness control cylinder 38 is in a test state, as shown in fig. 5, where the individual dynamic bypass control valve 41 is in the second operating position (i.e., closed), the lower chamber of the dynamic stiffness control cylinder 38 is isolated from the atmosphere and the air pump 4, and the air is maintained therein. The dynamic air release valve 42 is located at the first working position (i.e. opened), so that the dynamic air release valve 42 is communicated with the atmosphere, and residual air in the air pump 4 is discharged through the dynamic air release valve 42, so that the air pump 4 is prevented from being out of air to damage the air pump 4 and the whole pipeline system.
In the second state, the pressure setting of the lower cavity of the dynamic stiffness control cylinder 38 may be set to be the dynamic adjusting pressure section P1 and the static working pressure P2 according to the requirement. Wherein all pressures P1 of the dynamic pressure section are much smaller than the static pressure P2. In the P1 pressure section, the pressure in the dynamic stiffness control cylinder 38 plays a role in adjusting the dynamic disturbance amplitude of the tester, and the higher the P1 pressure is, the larger the amplitude of the swaying of the tester is, and the higher the test precision of the balance tester is. The lower the pressure, the lower the accuracy, and the more suitable for grading patients known to have problems with balance ability, while the higher the safety at the time of testing. During the P2 pressure segment, the weight and deflection of the tester itself will not have any movement of the support plate 37, and the static balance of the patient will be tested. The pressure section P1 can also be used for training the balance capacity of the patient, and the patient is adapted to different disturbance amplitudes by adjusting the pressure.
In the third operating state, as shown in fig. 6, in order to reduce the pressure in the lower cavity of the dynamic stiffness control cylinder 38, the separate dynamic bypass control valve 41 is located in the first operating position (i.e. opened), and the dynamic air release valve 42 is located in the first operating position (i.e. opened), at this time, the air pump 4 stops operating, and the pressure in the lower cavity of the dynamic stiffness control cylinder 38 is reduced by the specified pressure to meet the requirement.
The dynamic stiffness control cylinder 38 and the dynamic-static conversion cylinder 39 have the following three working states after being matched:
In the first operating state, as shown in fig. 7, when the dynamic stiffness control cylinder 38 is inflated, the single dynamic bypass control valve 41 is located in the first operating position (i.e. opened), the dynamic air release valve 42 is located in the second position (i.e. closed), the dynamic-static switching air release valve 43 is located in the first position (i.e. opened), and the inlet of the two-position three-way reversing valve 44 is communicated with the dynamic cylinder trunk 46. At this time, the lower chamber of the dynamic stiffness control cylinder 38 is connected to the air pump 4 and is isolated from the atmosphere by the dynamic air release valve 42. The lower cavity of the dynamic-static conversion cylinder 39 is communicated with the atmosphere through a dynamic-static conversion air release valve 43, and a piston rod in the dynamic-static conversion cylinder 39 moves downwards to prevent the piston rod from blocking the movement of the support plate 37.
In the second working state, as shown in fig. 8, the single dynamic bypass control valve 41 is located in the second working position (i.e. closed), the lower cavity of the dynamic stiffness control cylinder 38 is isolated from the atmosphere, the two-position three-way reversing valve 44 is connected with the dynamic cylinder trunk 46, the dynamic air release valve 42 is located in the first position (i.e. opened), and the air pump 4 is communicated with the atmosphere through the two-position three-way reversing valve 44 and the dynamic air release valve 42, so that the air pump 4 and the whole pipeline system are prevented from being damaged by air-holding. During pressure maintaining operation, the dynamic-static conversion air release valve 43 is located at the first position (i.e. opened). In this configuration, the dynamic stiffness control cylinder 38 has only one pressure section, i.e., the low pressure section P1. The static test state is realized through the dynamic-static conversion air cylinder 39, namely the air pump 4 is connected with the dynamic-static conversion trunk 48 through the two-position three-way reversing valve 44, and is not realized through the single dynamic stiffness control air cylinder 38 any more. In addition to the convenience of operation, the arrangement also avoids the inconvenience of operation caused by the difference between the piston rod top ends of the dynamic stiffness control cylinder 38 and the dynamic-static conversion cylinder 39.
In the third working state, as shown in fig. 9, the single dynamic branch control valve 41 is located at the first working position (i.e. opened), the dynamic air release valve 42 is located at the first working position (i.e. opened), the two-position three-way reversing valve 44 is connected with the dynamic-static conversion main path 48, the dynamic-static conversion air release valve 43 is located at the second working position (i.e. closed), at this time, the lower cavity of the dynamic stiffness control cylinder 38 is not acted any more in communication with the atmosphere, and the air of the air pump 4 fills the lower cavity of the dynamic-static conversion cylinder 39 until the pressure reaches P2, so that the piston rod of the dynamic-static conversion cylinder 39 is jacked up to realize static test.
The principles and embodiments of the present invention have been described in this specification with reference to specific examples, the description of which is only for the purpose of aiding in understanding the method of the present invention and its core ideas; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (10)
1. Balance capability testing device based on can sound conversion of multicylinder, its characterized in that: the device comprises a display module (1), an armrest module (2) and a test module (3), wherein the display module (1) and the test module (3) are respectively arranged at the upper end and the lower end of the armrest module (2), the display module (1) is electrically connected with the test module (3), and the display module (1) is used for displaying related data of the test module (3);
The test module (3) comprises a cylinder assembly (32), a bottom plate (33), a supporting plate (37) and a test universal joint (40), wherein the cylinder assembly (32) is fixed on the bottom plate (33), each telescopic end in the cylinder assembly (32) is abutted against the supporting plate (37), and two ends of the test universal joint (40) are respectively fixed at the central positions of the bottom plate (33) and the supporting plate (37);
The cylinder assembly (32) comprises a plurality of dynamic stiffness control cylinders (38) and a plurality of dynamic and static conversion cylinders (39), an upper cavity interface of each dynamic stiffness control cylinder (38) is used for being connected with the atmosphere, a lower cavity interface of each dynamic stiffness control cylinder (38) is connected with a dynamic cylinder branch (45), each dynamic cylinder branch (45) is connected with a dynamic branch control valve (41), each dynamic branch control valve (41) is used for controlling the on-off of each dynamic cylinder branch (45), one end, far away from each dynamic stiffness control cylinder (38), of each dynamic cylinder branch (45) is connected with a dynamic cylinder trunk (46), and each dynamic cylinder trunk (46) is connected with a dynamic air release valve (42) which can be communicated with the atmosphere when the dynamic air release valve (42) is in an open state;
The upper cavity interface of the dynamic and static conversion cylinder (39) is used for being connected with the atmosphere, the lower cavity interface of the dynamic and static conversion cylinder (39) is connected with a dynamic and static conversion branch circuit (47), one end of the dynamic and static conversion branch circuit (47) far away from the dynamic and static conversion cylinder (39) is connected with a dynamic and static conversion trunk circuit (48), the dynamic and static conversion trunk circuit (48) is connected with a dynamic and static conversion air release valve (43), and the dynamic and static conversion air release valve (43) can be communicated with the atmosphere when in an open state;
One end of the dynamic cylinder trunk (46) far away from the dynamic cylinder branch (45) and one end of the dynamic and static conversion trunk (48) far away from the dynamic and static conversion branch (47) are respectively connected to two air outlets of a two-position three-way reversing valve (44), and an air inlet of the two-position three-way reversing valve (44) is connected with an air pump (4).
2. The multiple cylinder based dynamic-static convertible balance capability test device of claim 1, wherein: the support plate (37) is also provided with a sensor assembly (31), and the sensor assembly (31) comprises a plurality of film pressure sensors and/or accelerometers.
3. The multiple cylinder based dynamic-static convertible balance capability test device of claim 1, wherein: the display module (1) comprises a display screen body (11), a display screen fixing rod (12) and a display screen universal joint (13), one end of the display screen universal joint (13) is fixed at the upper end of the display screen fixing rod (12), the other end of the display screen universal joint (13) is connected with the display screen body (11), and the lower end of the display screen fixing rod (12) is used for being connected with the handrail module (2).
4. The multi-cylinder based dynamic-static switching balance capability test device according to claim 3, wherein: the handrail module (2) comprises a front handrail (21) and two side handrails (22), wherein the two side handrails (22) are respectively fixed at two ends of the front handrail (21), and a handrail rod is arranged on the front handrail (21).
5. The multi-cylinder based dynamic-static conversion balance capability test device according to claim 4, wherein: the front handrail (21) is connected with the test module (3) through a supporting rod (5);
Two handrail connecting holes (23) are formed in one surface, far away from the side handrail (22), of the front handrail (21), the lower end of the display screen fixing rod (12) and the upper end of the supporting rod (5) are respectively inserted into the two handrail connecting holes (23), a handrail threaded hole (24) is further formed in the bottom of the front handrail (21), a first fastening knob (6) is connected at the handrail threaded hole (24) in a threaded mode, and the first fastening knob (6) is further connected with the display screen fixing rod (12) and the supporting rod (5) in a threaded mode;
The testing module (3) is provided with a connecting part (36), the side wall of the connecting part (36) is provided with a testing threaded hole, the lower end of the supporting rod (5) is sleeved on the outer side of the connecting part (36), the testing module further comprises a second fastening knob (7), and the second fastening knob (7) penetrates through the lower end of the supporting rod (5) and then is in threaded connection with the testing threaded hole.
6. The multiple cylinder based dynamic-static convertible balance capability test device of claim 1, wherein: and a shell (35) is sleeved outside the test module (3).
7. The multiple cylinder based dynamic-static convertible balance capability test device of claim 6, wherein: the controller is further arranged inside the shell (35), a control screen (34) is arranged on the side wall of the shell (35), and the control screen (34) is electrically connected with the controller.
8. The multiple cylinder based dynamic-static convertible balance capability test device of claim 1, wherein: the end face of the telescopic end of the dynamic stiffness control cylinder (38) is of an arc surface structure, and the end face of the telescopic end of the dynamic and static conversion cylinder (39) is of a plane structure.
9. The multiple cylinder based dynamic-static convertible balance capability test device of claim 1, wherein:
the dynamic bypass control valve (41) is provided with two working positions: when in working position, the lower cavity of the dynamic stiffness control cylinder (38) is connected with the air pump or the outside; when the second working position is adopted, the connection between the air pump or the outside and the lower cavity of the dynamic stiffness control cylinder (38) is cut off, and the air is sealed in the lower cavity of the dynamic stiffness control cylinder (38) and the pressure is kept;
the dynamic air release valve (42) has two operating positions: when in working position, the dynamic air release valve (42) is communicated with the atmosphere, and the pressure of the lower cavity in the dynamic stiffness control cylinder (38) is discharged or reduced after passing through the independent dynamic branch control valve (41); in the second working position, the dynamic air release valve (42) is not communicated with the outside atmosphere;
The dynamic-static conversion cylinder (39) has two working positions: the first working position is that the two-position three-way reversing valve (44) is connected with the dynamic-static conversion trunk (48), the dynamic-static conversion air release valve (43) is closed, the lower cavity of the dynamic-static conversion air cylinder (39) is filled with air to rated pressure, the upper cavity of the dynamic-static conversion air cylinder (39) is communicated with the atmosphere, and the piston rod of the dynamic-static conversion air cylinder (39) is in contact with the supporting plate (37) to jack up the piston rod; and in the second working position, the two-position three-way reversing valve (44) is connected with the dynamic cylinder trunk (46), the dynamic-static conversion air release valve (43) is opened, and the upper cavity and the lower cavity of the dynamic-static conversion cylinder (39) are communicated with the atmosphere.
10. The balance capability testing method based on the dynamic and static conversion of the multiple cylinders is characterized in that the balance capability testing device based on the dynamic and static conversion of the multiple cylinders according to any one of claims 1-9 comprises three working states of a dynamic stiffness control cylinder (38), and three working states of the dynamic stiffness control cylinder (38) and a dynamic and static conversion cylinder (39) which are common:
the dynamic stiffness control cylinder (38) has the following three operating states:
The working state is as follows: the dynamic stiffness control cylinder (38) is in a lower cavity gas pressure increasing state, an independent dynamic branch control valve (41) is opened and communicated with the air pump (4), a dynamic air release valve (42) is closed to isolate an air path from the atmosphere, gas is filled into the lower cavity of the dynamic stiffness control cylinder (38), the upper cavity of the dynamic stiffness control cylinder (38) is connected with the atmosphere, the pressure of the filled gas is detected by a pressure gauge (49), and when the set pressure is reached, the air inflation is ended;
And the working state is as follows: the dynamic stiffness control cylinder (38) is in a test state, at the moment, an independent dynamic branch control valve (41) is closed, the lower cavity of the dynamic stiffness control cylinder (38) is isolated from the atmosphere and the air pump (4), air is kept in the dynamic stiffness control cylinder, the dynamic air release valve (42) is opened, so that the dynamic air release valve (42) is communicated with the atmosphere, and residual air in the air pump (4) is discharged through the dynamic air release valve (42);
In the third working state, in order to reduce the pressure of the lower cavity of the dynamic stiffness control cylinder (38), the dynamic branch control valve (41) is opened, the dynamic air release valve (42) is opened, at the moment, the air pump (4) stops working, and the pressure of the lower cavity of the dynamic stiffness control cylinder (38) is reduced by the specified pressure;
The dynamic stiffness control cylinder (38) and the dynamic-static conversion cylinder (39) are matched in three working states:
when the dynamic stiffness control cylinder (38) is inflated in the first working state, a dynamic branch control valve (41) is opened, a dynamic air release valve (42) is closed, a dynamic and static conversion air release valve (43) is opened, an inlet of a two-position three-way reversing valve (44) is communicated with a dynamic cylinder trunk (46), at the moment, the lower cavity of the dynamic stiffness control cylinder (38) is connected with an air pump (4) and is isolated from the atmosphere through the dynamic air release valve (42), the lower cavity of a dynamic and static conversion cylinder (39) is communicated with the atmosphere through the dynamic and static conversion air release valve (43), and a piston rod in the dynamic and static conversion cylinder (39) moves downwards;
In the second working state, an independent dynamic branch control valve (41) is closed, the lower cavity of the dynamic stiffness control cylinder (38) is isolated from the atmosphere, a two-position three-way reversing valve (44) is connected with a dynamic cylinder main path (46), a dynamic air release valve (42) is opened, and an air pump (4) is communicated with the atmosphere through the two-position three-way reversing valve (44) and the dynamic air release valve (42); when the pressure maintaining work is performed, the dynamic-static conversion air release valve (43) is opened, and the air pump (4) is connected with the dynamic-static conversion trunk (48) through the two-position three-way reversing valve (44);
In the third working state, the dynamic branch control valve (41) is opened, the dynamic air release valve (42) is opened, the two-position three-way reversing valve (44) is connected with the dynamic-static conversion trunk (48), the dynamic-static conversion air release valve (43) is closed, the lower cavity of the dynamic stiffness control cylinder (38) is communicated with the atmosphere, and the air of the air pump (4) is filled into the lower cavity of the dynamic-static conversion cylinder (39) to jack up the piston rod of the dynamic-static conversion cylinder (39) to realize static test.
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