CN206777327U

CN206777327U - Adapt to the device for measuring force of arbitrary shaped body

Info

Publication number: CN206777327U
Application number: CN201720646600.4U
Authority: CN
Inventors: 胡淳文
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-06-06
Filing date: 2017-06-06
Publication date: 2017-12-22
Anticipated expiration: 2027-06-06

Abstract

The device for measuring force of the present utility model for adapting to arbitrary shaped body, including load-bearing flat board, Coupling Shaft, self-aligning ball bearing, bearing fixing device, weighing sensor, support, gland, use and be rigidly connected between load-bearing flat board and Coupling Shaft, bearing fixing device is configured to bearing being fixed in Coupling Shaft, the inner side end of weighing sensor is connected with Coupling Shaft, the end face outside of weighing sensor is attached with support, the side that support is connected with weighing sensor has rectangular aperture groove, the ball recess for accommodating rigid spheres is provided with two corresponding side walls of rectangular aperture groove, gland is configured to fix weighing sensor to ensure that weighing sensor is rigidly connected with Coupling Shaft formation.The utility model can reflect that simple in construction, portability is strong, easy to replace and maintain, when it is applied to the double monitoring that can be realized when weighing on sick bed to patient body weight and position of medical institutions by the numerical value of dynamometry and direction simultaneously.

Description

Adapt to the device for measuring force of arbitrary shaped body

Technical field

The utility model belongs to dynameter field, more particularly to a kind of device for measuring force for adapting to arbitrary shaped body.

Background technology

Device for measuring force, for example, weighing sensor, is widely used in industrial circle, but most of dynamometry fill Put and be only capable of reflection by the size of dynamometry numerical value, it is impossible to which reflection is by the directional information of dynamometry.At present, generally use in medical institutions Sick bed with function of weighing detects to the changes of weight information of medical treatment patient, described for being filled in the sick bed bed body weighed There are several device for measuring force, to measure the body weight information of medical treatment patient, help is provided for the treatment work of medical personnel.But Most of sick beds of weighing generally be only capable of measuring the body weight numerical value of medical treatment patient and the change information of patient posture can not be reflected. Key index is provided in order to obtain when patient posture information is treated for medical personnel, it is therefore desirable for proposing a kind of dynamometry dress Put, it can reflect by the numerical value of dynamometry and direction simultaneously, its be applied to weigh sick bed when can realize the dual prison of body weight and position Survey.

A kind of detectable bed patient's body weight and the system of motion are disclosed in the prior art, and it is by weighing sensor and pressure Electric transducer is integrated in a measuring unit structure in bed body, when the changes of weight that patient is measured using weighing sensor While using piezoelectric transducer monitor patient motion change, above-mentioned technology, which is disadvantageous in that, to be needed to increase extra pressure Electric transducer monitors the motion of patient.A kind of weigh-bed for being used to carry out position monitoring, its profit are also disclosed in the prior art Position with the load measured by each weighing sensor in bed body and each weighing sensor relative to preset reference coordinate system Put to calculate the barycentric coodinates of measurand, the position chanP of measurand is judged according to the variation track of barycentric coodinates, the skill Art scheme is disadvantageous in that the frame of reference also changes therewith when the quantity of weighing sensor and locus change Become, need to carry out the setting of the frame of reference according to the geometrical relationship of each group weighing sensor before measurement, it is cumbersome.

Utility model content

For above-mentioned problems of the prior art, the purpose of this utility model is that providing one kind adapts to arbitrary shape The device for measuring force of shape object, it can reflect that simple in construction, portability is strong, is easy to more by the numerical value of dynamometry and direction simultaneously Change and repair, when it is applied to the dual prison that can be realized when weighing on sick bed to patient body weight and position of medical institutions Survey.

What the utility model was realized in：

The device for measuring force for adapting to arbitrary shaped body in the utility model, including load-bearing flat board, Coupling Shaft, bearing, Bearing fixing device, weighing sensor, support, gland.

The load-bearing flat panel configurations are used to carrying the testee with arbitrary shape, the load-bearing flat board with it is described Use and be rigidly connected between Coupling Shaft.

The Coupling Shaft is configured to connect the load-bearing flat board and the weighing sensor, and the Coupling Shaft includes first Partly, Part II and Part III, the Part II are provided with thread segment, the end of the Part III set with 90 ° of spaced at least three first hole slots for being used to install the weighing sensor.

The bearing includes inner ring and outer ring, and the Bearing configuration is used for four frees degree for realizing Coupling Shaft, and it can Bear radial load and axial load and be capable of the bearing of automatic aligning.

The bearing fixing device is configured to the bearing being fixed in the Coupling Shaft.

The weighing sensor, which is configured to quality signal being changed into measurable electric signal, to be exported, described to weigh The inner side end of sensor is connected with the Coupling Shaft, and the end face outside of the weighing sensor is connected with the support Connect.

The support has rectangular aperture groove with the side that the weighing sensor is connected.

The gland is configured to fix the weighing sensor to ensure the weighing sensor and the Coupling Shaft Formation is rigidly connected.

It is preferably located to be provided with two corresponding side walls of the rectangular aperture groove of the support and is configured to Accommodate the ball recess of rigid spheres.

Preferably, the end face of the load-bearing flat board is provided with the hub bore for being used for being engaged with the Coupling Shaft, the switching The Part I of axle is provided with the keyway for being configured to accommodate the key, and the hub bore uses key connection with the Coupling Shaft.

Preferably, the key is flat key.

Preferably, the bearing is self-aligning ball bearing.

Preferably, the bearing fixing device includes first component and second component, and the diameter of the first component is more than The diameter of the second component, the first component are configured to the outer ring of the bearing being fixed on bearing block, and described Two parts are configured to the inner ring of the bearing being fixed in the Coupling Shaft.

Preferably, the weighing sensor is the device for being only capable of measuring single shaft power.

Preferably, the center of the rigid spheres and the dynamometry axis coaxle of the weighing sensor.

Preferably, the device for measuring force includes three weighing sensors and three makes with weighing sensor cooperation The support, the inner side end difference of first weighing sensor, the second weighing sensor and the 3rd weighing sensor It is connected with the Coupling Shaft, the outboard end of first weighing sensor, the second weighing sensor and the 3rd weighing sensor Face is attached with the first support, second support and the 3rd support respectively, wherein the dynamometry of first weighing sensor Axis is vertical with the axis of the Coupling Shaft, the dynamometry axis of second weighing sensor and the diameter parallel of the Coupling Shaft And the dynamometry axis of the 3rd weighing sensor and the diameter parallel of the Coupling Shaft；Connect with first weighing sensor First centre of sphere line of the corresponding described two rigid spheres of inside of spherical groove and the switching in the first support connect The axis of axle is vertical, with second weighing sensor connection the second support on inside of spherical groove it is corresponding described two Second centre of sphere line of individual rigid spheres and the diameter parallel of the Coupling Shaft, and be connected with the 3rd weighing sensor 3rd centre of sphere line of the corresponding described two rigid spheres of inside of spherical groove and the Coupling Shaft on 3rd support Diameter parallel；First centre of sphere line overlaps with the dynamometry axis of first weighing sensor, second centre of sphere line Overlapped with the dynamometry axis of second weighing sensor and the 3rd centre of sphere line and the 3rd weighing sensor Dynamometry axis overlaps.

Preferably, first weighing sensor, the second weighing sensor and the 3rd weighing sensor are respectively used to measure Around the amount of spin of Y-axis, X-axis and Z axis, second weighing sensor and the 3rd weighing sensor are used to measure edge Coupling Shaft The amount of movement of Z axis, second weighing sensor and the 3rd weighing sensor registration and numerical value is identical to measure simultaneously To Coupling Shaft along the amount of movement of Z axis.

Compared with prior art, the utility model has the advantages that：

The device for measuring force for adapting to arbitrary shaped body in the utility model, the gravity of testee are decomposed in space For tri- groups of axial forces of X, Y and Z, when testee is placed on load-bearing flat board, weighing sensor measures testee warp respectively Tri- groups of axial forces of X, Y and Z that Coupling Shaft is transmitted realize the measurement of the gravity of testee；Using self-aligning ball bearing to Coupling Shaft The free degree enter row constraint, by the combination registration of weighing sensor the change in testee direction can be judged so that it is guaranteed that power The uniqueness of orientation measurement, its is simple in construction, and the ability of adaptation testee geometry is strong, can be same by less sensor Shi Shixian is by force, easy to replace and maintain by the measurement in dynamometry numerical value and direction, portability.

Brief description of the drawings

Fig. 1 is the structural representation according to the device for measuring force of the present utility model for adapting to arbitrary shaped body.

Fig. 2 is regarded according to the blast of the structural representation of the device for measuring force of the present utility model for adapting to arbitrary shaped body Figure.

Fig. 3 is the structural representation of the Coupling Shaft in the device for measuring force of the present utility model for adapting to arbitrary shaped body Figure.

Fig. 4 is the structural representation according to the device for measuring force medium-height trestle of the present utility model for adapting to arbitrary shaped body.

Embodiment

Exemplary embodiment, feature and aspect of the present utility model are described in detail below with reference to accompanying drawing.It is identical in accompanying drawing Reference represent the same or analogous element of function.Although the various aspects of embodiment are shown in the drawings, remove Non-specifically point out, it is not necessary to accompanying drawing drawn to scale.

As depicted in figs. 1 and 2, the device for measuring force for adapting to arbitrary shaped body in the utility model, including load-bearing are put down Plate 1, Coupling Shaft 2, bearing 3, bearing fixing device 4, weighing sensor 5, support 6, gland 7.Wherein, bearing 3 is spherical ball axle Hold, weighing sensor 5 selects cantilever style weighing sensor, and its metering system is resistance-strain type.As shown in figure 3, device for measuring force Reference frame origin be bearing 3 center, X, Y and Z coordinate axle are according to cartesian coordinate system principle construction.

Using being rigidly connected between load-bearing flat board 1 and Coupling Shaft 2, load-bearing flat board 1, which is configured to carrying, has arbitrary shape Testee.Preferably, the end face of load-bearing flat board 1 is provided with the hub bore 11 for being used for being engaged with Coupling Shaft 2, and hub bore 11 is with turning Spindle 2 uses key connection.Preferably, key 8 is flat key.

Bearing fixing device 4 is configured to bearing 3 being fixed in Coupling Shaft 2.

Bearing fixing device 4 includes first component 41 and second component 42, and the diameter of first component 41 is more than second component 42 diameter, first component 41 are configured to the outer ring of bearing 3 being fixed on bearing block (not shown), and second component 42 configures For the inner ring of bearing 3 to be fixed on into Coupling Shaft 2.

Preferably, the first component of bearing fixing device 4 is outer nut, and the second component of bearing fixing device 4 is interior spiral shell Mother, wherein outer nut are the outer ring of self-aligning ball bearing 3 is fixed on bearing block, inner nut and the thread segment in Coupling Shaft 221 coordinate the inner ring of self-aligning ball bearing 3 is fixed in Coupling Shaft 2, as shown in Figure 3.

The inner side end of weighing sensor 5 is connected with Coupling Shaft 2, and end face outside and the support 6 of weighing sensor 5 are carried out Connection, weighing sensor 5, which is configured to quality signal being changed into measurable electric signal, to be exported.

As shown in figure 4, support 6 has rectangular aperture groove 601, rectangular aperture groove with the side that weighing sensor 5 is connected Two corresponding side walls on be provided with ball recess 602, ball recess 62 is configured to accommodate rigid spheres 603.

Preferably, the center of rigid spheres 603 and the dynamometry axis coaxle of weighing sensor 5.

Preferably, the quantity of weighing sensor 5 is three.Preferably, the number for the support being connected with weighing sensor 5 Measure as three.As shown in Figures 1 and 2, according to embodiment of the present utility model, the first weighing sensor 51, second are weighed biography Sensor 52 is connected with the inner side end of the 3rd weighing sensor 53 respectively at Coupling Shaft 2.First weighing sensor 51, second claims Retransmit the weighing sensor 53 of sensor 52 and the 3rd end face outside respectively with first support 61, the support 63 of second support 62 and the 3rd It is attached.The dynamometry axis of first weighing sensor 51 is vertical with the axis of Coupling Shaft 2, the dynamometry of the second weighing sensor 52 Axis and the diameter parallel of Coupling Shaft 2 and the dynamometry axis of the 3rd weighing sensor 53 and the diameter parallel of Coupling Shaft 2；With First centre of sphere line of two corresponding rigid spheres of inside of spherical groove in the first support 61 of one weighing sensor 51 connection It is vertical with the axis of Coupling Shaft 2, with the second weighing sensor 52 connection second support 62 on inside of spherical groove it is corresponding two Second centre of sphere line of individual rigid spheres and the diameter parallel of Coupling Shaft 2, and the 3rd be connected with the 3rd weighing sensor 53 3rd centre of sphere line of two corresponding rigid spheres of inside of spherical groove and the diameter parallel of Coupling Shaft 2 on support 63；First Centre of sphere line overlaps with the dynamometry axis of the first weighing sensor 51, the dynamometry of the second centre of sphere line and the second weighing sensor 52 Axis overlaps and the 3rd centre of sphere line overlaps with the dynamometry axis of the 3rd weighing sensor 53.

Gland 7 is configured to fix weighing sensor 5, to ensure that rigidity is formed between weighing sensor 5 and Coupling Shaft 2 Connection.

Coupling Shaft 2 is configured to connect load-bearing flat board 1 and weighing sensor 5.Coupling Shaft 2 includes Part I 21, second Part 22 and Part III 23, Part I 21 are provided with keyway 211, thread segment 221 are provided with Part II 22, such as Fig. 3 It is shown.Keyway 211 is configured to accommodate key 8, and the end of Part III 23 is provided with least three with 90 ° spaced the One hole slot 231, the first hole slot 231 are configured to install weighing sensor 5.

At least three are provided with first surface 71 on gland 7 with 90 ° of spaced second hole slots 711, the second hole Groove 711 is configured to coordinate to install weighing sensor with the first hole slot 231 that the end of 2 Part III of Coupling Shaft 23 is set 5。

It is provided with the Part III 23 of Coupling Shaft 2 on the end face of the first hole slot 231 towards setting on switching shaft body direction There is the first screwed hole 24, the 24 coaxial place of the first screwed hole in Coupling Shaft 2 is provided with the second screwed hole 73 on gland 7, the One screwed hole 24 and the second screwed hole 73 is configured to and threaded fastener fits, Coupling Shaft 2 is connected to by weighing sensor 5.

Self-aligning ball bearing 3 is arranged in Coupling Shaft 2, and self-aligning ball bearing 3 is fixed in Coupling Shaft 2 by bearing fixing device 4. The one end of weighing sensor 5 is attached with support 6, and the other end is connected with Coupling Shaft 2, and gland 7 is to fixed weighing sensor 5 Ensure that it is formed with Coupling Shaft 2 to be rigidly connected.Self-aligning ball bearing 3 constrain Coupling Shaft 2 along X and the one-movement-freedom-degree of Y-direction.Turn Spindle 2 is four-degree-of-freedom system, including along Z axis forwards/reverse move, the rotation of forwards/reverse about the z axis, around X-axis just To/reversely rotate, the forwards/reverse rotation around Y-axis.

Assuming that using the axis direction of Coupling Shaft 2 as Z axis, the first weighing sensor 51, the second weighing sensor 52 and the 3rd Weighing sensor 53 is respectively used to measure amount of spin of the Coupling Shaft around Y-axis, X-axis and Z axis, and the second weighing sensor 52 and the 3rd claims Sensor 53 is retransmitted to be used to measure the amount of movement along Z axis.When simultaneously the second weighing sensor 52 and the 3rd weighing sensor 53 show When several and numerical value is identical, measurement obtains amount of movement of the Coupling Shaft along Z axis, and registration value is the numerical value of power.

Preferably, below to the numerical value of each weighing sensor in device for measuring force and the posture corresponding relation of load-bearing flat board 1 It is described, wherein the registration that the implication of " no numerical value " is each weighing sensor is initial value.When the posture of load-bearing flat board 1 is Rotate forward about the z axis, the first weighing sensor 51 is without numerical value, and the second weighing sensor 52 is without numerical value, the 3rd weighing sensor 53 For on the occasion of；When load-bearing flat board posture for when reversely rotating about the z axis, the first weighing sensor 51 is without numerical value, the second weighing sensor 52 without numerical value, and the 3rd weighing sensor 53 is negative value；When load-bearing flat board posture is moves along Z axis forward direction, the first weighing sensor 51 be without numerical value, the second weighing sensor 52 and the registration of the 3rd weighing sensor 53 be on the occasion of and the second weighing sensor 52 with The registration of 3rd weighing sensor 53 is equal；When the posture of load-bearing flat board 1 is to be moved backward along Z axis, the first weighing sensor 51 For without numerical value, the second weighing sensor 52 and the registration of the 3rd weighing sensor 53 are negative value and the second weighing sensor 52 and The registration of three weighing sensors 53 is equal；When the posture of load-bearing flat board 1 is to rotate forward around X-axis, the nothing of the first weighing sensor 51 Numerical value, the second weighing sensor 52 are on the occasion of the 3rd weighing sensor 53 is without numerical value；When the posture of load-bearing flat board 1 is anti-around X-axis To rotation, the first weighing sensor 51 is negative value without numerical value, the second weighing sensor 52, and the 3rd weighing sensor 53 is without numerical value； When the posture of load-bearing flat board 1 is to be rotated forward around Y-axis, the first weighing sensor 51 is on the occasion of the second weighing sensor 52 is countless Value, the 3rd weighing sensor 53 is without numerical value；When the posture of load-bearing flat board 1 is to be reversely rotated around Y-axis, the first weighing sensor 51 is Negative value, the second weighing sensor 52 is without numerical value, and the 3rd weighing sensor 53 is without numerical value.

It is perfect condition above, in actual use, three weighing sensors being capable of registration.Weighed according to three The registration value of sensor, the size and direction of institute's dynamometry can be obtained with reference to space force system rule.

A kind of device for measuring force for adapting to arbitrary shaped body is provided in the utility model, it can reflect by dynamometry simultaneously Numerical value and direction, it is simple in construction, it is portable strong, it is easy to replace and maintain, when it is applied to the disease of weighing of medical institutions The double monitoring to patient body weight and position can be realized when on bed.In actual applications, the device for measuring force in the utility model Using on other field, above-mentioned replacement is also fallen within the scope of protection of the utility model.

Finally it should be noted that：Above-described each embodiment is merely to illustrate the technical solution of the utility model, rather than It is limited；Although the utility model is described in detail with reference to the foregoing embodiments, one of ordinary skill in the art It should be understood that：It can still modify to the technical scheme described in previous embodiment, or to which part or whole Technical characteristic carries out equivalent substitution；And these modifications or substitutions, the essence of appropriate technical solution is departed from the utility model The scope of each embodiment technical scheme.

Claims

1. a kind of device for measuring force for adapting to arbitrary shaped body, including load-bearing flat board, Coupling Shaft, bearing, bearing fixing device, Weighing sensor, support, gland, it is characterised in that：

The load-bearing flat panel configurations are used to carry the testee with arbitrary shape, the load-bearing flat board and the switching Use and be rigidly connected between axle；

The Coupling Shaft is configured to connect the load-bearing flat board and the weighing sensor, and the Coupling Shaft includes first Point, Part II and Part III, the Part II is provided with thread segment, and the end of the Part III is set with 90 ° Spaced at least three first hole slots for being used to install the weighing sensor；

The bearing includes inner ring and outer ring, and the Bearing configuration is used for four frees degree for realizing Coupling Shaft, and it can bear Radial load and axial load and the bearing for being capable of automatic aligning；

The bearing fixing device is configured to the bearing being fixed in the Coupling Shaft；

The weighing sensor, which is configured to quality signal being changed into measurable electric signal, to be exported, the weighing and sensing The inner side end of device is connected with the Coupling Shaft, and the end face outside of the weighing sensor is attached with the support；

The support has rectangular aperture groove with the side that the weighing sensor is connected；

The gland is configured to fix the weighing sensor to ensure that the weighing sensor is formed with the Coupling Shaft It is rigidly connected.

2. the device for measuring force as claimed in claim 1 for adapting to arbitrary shaped body, it is characterised in that：Positioned at the support The ball recess for being configured to accommodate rigid spheres is provided with two corresponding side walls of the rectangular aperture groove.

3. the device for measuring force as claimed in claim 1 for adapting to arbitrary shaped body, it is characterised in that：The load-bearing flat board End face is provided with the hub bore for being used for being engaged with the Coupling Shaft, and the Part I of the Coupling Shaft, which is provided with, to be configured to accommodate The keyway of key, the hub bore use key connection with the Coupling Shaft.

4. the device for measuring force as claimed in claim 3 for adapting to arbitrary shaped body, it is characterised in that：The key is flat key.

5. the device for measuring force as claimed in claim 1 for adapting to arbitrary shaped body, it is characterised in that：The bearing is aligning Ball bearing.

6. the device for measuring force as claimed in claim 5 for adapting to arbitrary shaped body, it is characterised in that：The bearing fixes dress Put including first component and second component, the diameter of the first component is more than the diameter of the second component, described first Part is configured to the outer ring of the bearing being fixed on bearing block, and the second component is configured to the inner ring of the bearing It is fixed in the Coupling Shaft.

7. the device for measuring force as claimed in claim 1 for adapting to arbitrary shaped body, it is characterised in that：The weighing sensor To be only capable of measuring the device of single shaft power.

8. the device for measuring force as claimed in claim 1 for adapting to arbitrary shaped body, it is characterised in that：The rigid spheres Center and the dynamometry axis coaxle of the weighing sensor.

9. the device for measuring force for adapting to arbitrary shaped body as described in claim 1 to 8, it is characterised in that：The dynamometry dress Put and weighed including three weighing sensors and three supports being used cooperatively with the weighing sensor, described first The inner side end of sensor, the second weighing sensor and the 3rd weighing sensor is connected with the Coupling Shaft respectively, and described The end face outside of one weighing sensor, the second weighing sensor and the 3rd weighing sensor respectively with the first support, second Support and the 3rd support are attached, wherein the dynamometry axis and the axis of the Coupling Shaft of first weighing sensor hang down Directly, the dynamometry axis of second weighing sensor and the diameter parallel of the Coupling Shaft and the 3rd weighing sensor Dynamometry axis and the diameter parallel of the Coupling Shaft；Spherical female in the first support being connected with first weighing sensor The first centre of sphere line of corresponding described two rigid spheres is vertical with the axis of the Coupling Shaft in groove, claims with described second Retransmit the second centre of sphere line of described two rigid spheres that inside of spherical groove is corresponding in the second support of sensor connection With inside of spherical groove in the diameter parallel of the Coupling Shaft, and the 3rd support being connected with the 3rd weighing sensor 3rd centre of sphere line of corresponding described two rigid spheres and the diameter parallel of the Coupling Shaft；First centre of sphere line Overlapped with the dynamometry axis of first weighing sensor, the dynamometry of second centre of sphere line and second weighing sensor Axis overlaps and the 3rd centre of sphere line overlaps with the dynamometry axis of the 3rd weighing sensor.

10. the device for measuring force of arbitrary shaped body is adapted to as described in claim 9, it is characterised in that：Described first claims Sensor, the second weighing sensor and the 3rd weighing sensor is retransmitted to be respectively used to measure rotation of the Coupling Shaft around Y-axis, X-axis and Z axis Amount, second weighing sensor and the 3rd weighing sensor are used to measure the amount of movement along Z axis, and described second weighs Sensor and the 3rd weighing sensor registration and numerical value is identical can measure to obtain amount of movement of the Coupling Shaft along Z axis simultaneously.