CN218865371U

CN218865371U - Centroid-rotational inertia parameter measuring device

Info

Publication number: CN218865371U
Application number: CN202222885822.5U
Authority: CN
Inventors: 杨洪涛; 郭永才; 邱皓轩; 武艺泳
Original assignee: Zhengzhou Research Institute of Mechanical Engineering Co Ltd
Current assignee: Zhengzhou Research Institute of Mechanical Engineering Co Ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-04-14
Anticipated expiration: 2032-10-31

Abstract

The utility model relates to a work piece check out test set field has especially related to a barycenter-inertia parameter measurement device. The centroid-rotational inertia parameter measuring device comprises a rotational inertia parameter measuring unit, wherein the rotational inertia parameter measuring unit comprises a workbench, at least three weighing tables are arranged around the circumference of the rotational inertia parameter measuring unit, the weighing tables are lower than the workbench of the rotational inertia parameter measuring unit and are provided with supports for positioning a measured workpiece, each weighing table and each support form a centroid measuring unit, a lifting support is further arranged at the periphery of the rotational inertia parameter measuring unit, and the lifting support is provided with a lifting position capable of lifting the measured workpiece to a set height and a falling position capable of placing the measured workpiece on the workbench. Through the utility model discloses a device can rely on the lift support to accomplish the switching of the barycenter measurement of work piece and inertia measuring state, has solved the barycenter measurement of work piece and the inconvenient problem of inertia measurement state switching.

Description

Centroid-rotational inertia parameter measuring device

Technical Field

The utility model relates to a work piece check out test set field has especially related to a barycenter-inertia parameter measurement device.

Background

The measurement of the center of mass and the measurement of the moment of inertia of the workpiece require that the workpiece be in different states. At present, when the mass center and the rotational inertia parameters of a workpiece are measured, the mass center measuring state and the active inertia measuring state are mostly switched by manual operation. The manual switching mode has no obvious problem when the workpiece is light in weight and small in size, but is very inconvenient when the workpiece is heavy in weight or large in size.

For example, chinese utility model patent application with publication No. CN105675211A and publication No. 2016, 6, and 15 discloses an air bearing support table type torsional pendulum method rotational inertia measuring device and method, wherein the measuring device comprises a base, an outer sleeve, a swing assembly and a workbench, and the torsional pendulum assembly comprises an air bearing seat, an air bearing, a torsion bar seat and a torsion bar. The outer sleeve is fixed on the base, the air-bearing seat is connected to the top of the outer sleeve, a shaft sleeve of the air-bearing is connected with the air-bearing seat, the torsion bar seat is connected with the lower end of a rotating main shaft of the air-bearing, the upper end of the torsion bar is connected with the torsion bar seat, the base is provided with a torsion bar adapter, the lower end of the torsion bar is in rotation-stopping fit with the torsion bar adapter, the workbench is connected to the upper end of the rotating main shaft of the air-bearing, the bottom of the workbench is provided with a swing needle, the top of the air-bearing seat is connected with a photoelectric tube seat, a photoelectric tube is installed on the photoelectric tube seat and used for being matched with the swing needle, and swing time of a workpiece in the measuring process is recorded so as to measure rotational inertia of the workpiece.

The air bearing supporting table type torsional pendulum method rotational inertia measuring device can only realize measurement of the rotational inertia of the workpiece, and when the mass center of the workpiece is measured, the workpiece needs to be manually transferred to mass center measuring equipment, so that the measurement is very inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a barycenter-inertia parameter measurement device to solve the barycenter of work piece and measure and the inconvenient problem of inertia measurement state switching.

In order to solve the above problem, the mass center-moment of inertia parameter measuring device of the utility model adopts the following technical scheme: the device for measuring the mass center-rotational inertia parameters comprises a rotational inertia parameter measuring unit, wherein the rotational inertia parameter measuring unit comprises a workbench, at least three weighing tables are arranged around the circumference of the rotational inertia parameter measuring unit, the weighing tables are lower than the workbench of the rotational inertia parameter measuring unit and are provided with supports for positioning a measured workpiece, each weighing table and each support form the mass center measuring unit, a lifting support is further arranged at the periphery of the rotational inertia parameter measuring unit, and the lifting support is provided with a lifting position capable of lifting the measured workpiece to a set height and a falling position capable of placing the measured workpiece on the workbench.

Has the beneficial effects that: when using the utility model discloses a barycenter-inertia parameter measuring device measures the work piece, can pass through the pillar with the work piece and support, places on the platform of weighing to the barycenter to the work piece is measured, measures the completion back, and accessible lift support is with work piece jack-up to rising the position, thereby carries out the switching of inertia measurement state, then makes the lift support descend to the position that falls, and the work piece will be arranged in inertia parameter measuring unit's workstation this moment on, carries out the measurement of inertia parameter. Through the utility model discloses a device can rely on the lift support to accomplish the switching of the barycenter measurement of work piece and inertia measuring state, has solved the barycenter measurement of work piece and the inconvenient problem of inertia measuring state switching.

Furthermore, more than two lifting supports are provided, and the lifting supports are in synchronous transmission connection.

When more than two lifting supports are arranged, the lifting supports can be arranged more flexibly, and compared with the lifting supports for independently supporting workpieces, the structure of a single lifting support is simplified.

Furthermore, the two lifting supports comprise spiral lifters, and the two lifting supports are arranged on two radial sides of the workbench and connected to the same driving device through a transmission shaft system. The spiral lifter driven by the same driving device can ensure the lifting synchronism more easily, and prevent the workpiece from inclining and sliding down in the lifting process.

Furthermore, the transmission shaft system is arranged in a U shape. The U-shaped transmission shaft system can limit a fence at the periphery of the device, and the safety around the test environment is guaranteed.

Still further, the lifting support is provided with a lifting positioning seat for positioning the workpiece. The lifting positioning seat plays a role in positioning the workpiece, and the accuracy of a measuring result is guaranteed.

Furthermore, the workbench is provided with a deflector rod, and the periphery of the workbench is provided with a buffer matched with the deflector rod in a stopping way. The deflector rod is used as a power receiving part of the rotational inertia parameter measuring unit, and a buffer is configured for the deflector rod, so that the deflector rod can be limited and protected.

Furthermore, a driving cylinder for pushing the driving lever is arranged at the periphery of the workbench. The driving cylinder is used as a driving part of the shifting rod, so that the mechanical and controllable force loading can be realized, and the use convenience of the device and the accuracy of a measuring result are further improved.

Furthermore, a position proximity switch mounting seat is arranged on the periphery of the workbench and used for position detection after the deflector rod is pushed in place under the action of the driving cylinder.

Furthermore, the weighing platform comprises a weighing bracket and a weighing sensor arranged on the weighing bracket, and a sensor cushion block is also arranged on the weighing bracket. The sensor cushion block can play a role in protecting the sensor.

Furthermore, the rotational inertia parameter measuring unit and the weighing platform are both arranged on the same base. The rotational inertia parameter measuring unit and the weighing platform are arranged on the same base, so that the whole device can be moved and the parts can be accurately positioned.

Drawings

Fig. 1 is a first perspective view of embodiment 1 of the centroid-moment of inertia parameter measuring apparatus of the present invention;

fig. 2 is a second perspective view of embodiment 1 of the centroid-moment of inertia parameter measuring apparatus of the present invention;

fig. 3 is a plan view of embodiment 1 of the centroid-moment of inertia parameter measuring apparatus of the present invention;

fig. 4 is a sectional view of embodiment 1 of the centroid-rotational inertia parameter measuring device of the present invention;

FIG. 5 is a schematic view of the base of FIG. 1;

FIG. 6 is a schematic structural view of the bearing support of FIG. 1;

FIG. 7 is a schematic view of the bearing of FIG. 1;

FIG. 8 is a schematic illustration of the construction of the putter head of FIG. 4;

FIG. 9 is a schematic illustration of the construction of the putter head of FIG. 4.

In the figure: 101. a base; 102. a rotational inertia parameter measuring unit; 21. a bearing seat; 22. a bearing; 23. a work table; 41a, a first shading element; 24. twisting the rod head; 25. a torsion bar; 26. a torsion bar connection disc; 27. a torsion bar clamping seat; 28. a deflector rod; 29. a buffer; 210. a buffer cylinder; 211. a driving cylinder; 212. a limiting plate; 213. a conical positioning pin; 103. a centroid measuring unit; 104. a lifting support; 41b, a second light shielding member; 42. a lifting positioning seat; 43. a lifting support; 44. a drive shaft; 45. a coupling; 46. a steering reverser; 105. a weighing platform; 51. a weighing bracket; 52. a sensor cushion block; 53. a weighing sensor; 54. positioning pins; 55. a pin puller; 56. positioning a pin boss; 57. an optocoupler mount; 58. an optical coupler; 106. an electric motor.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," 8230, "" etc. does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises the element.

The features and properties of the present invention are described in further detail below with reference to examples.

The utility model discloses a barycenter-inertia parameter measuring device's embodiment 1:

as shown in fig. 1 to 9, the centroid-rotational inertia parameter measuring apparatus includes a base 101, a rotational inertia parameter measuring unit 102, a centroid measuring unit 103, and a lifting support 104.

The base 101 has a rectangular outer contour as shown in fig. 5, is made of cast iron, and has connecting holes, such as a motor avoiding groove, a motor fixing frame connecting hole, and the like, on the upper surface thereof for respectively connecting the rotational inertia parameter measuring unit 102, the corresponding parts of the centroid measuring unit, and the lifting support 104.

The rotational inertia parameter measuring unit 102 includes a bearing housing 21 fixedly installed on the base 101, a bearing 22 installed on the bearing housing 21, and a table 23 installed on the bearing 22. The bearing housing 21 is cylindrical and has a window at the lower portion thereof, as shown in fig. 6, and a connection hole is formed at the lower edge of the window to connect with the base 101, and a connection hole is also formed at the upper end of the base 101 to connect with the bearing 22 through the connection hole at the upper end thereof. As shown in fig. 7, in this embodiment, the bearing 22 is an air bearing, and has a lower end surface provided with a connecting hole, and is fixed on the bearing seat 21 by being matched with the connecting hole provided at the upper end of the bearing seat 21, and the worktable 23 is fixed on the upper end surface of the bearing 22 by a screw through the connecting hole, and can rotate with the upper half portion of the bearing 22 relative to the bearing seat 21.

As shown in fig. 7, a torsion bar head mounting hole is provided at the center of the upper end surface of the bearing 22, and a torsion bar head 24 (see fig. 8) is locked with respect to the upper half portion of the bearing 22 by a locking key on the lower side surface thereof being engaged with a locking groove provided on the upper end surface of the bearing 22, and is fixedly connected with the upper half portion of the bearing 22 by a screw. As shown in fig. 9, a disc-shaped torsion bar connection plate 26 is provided at the upper end of the torsion bar 25, a fitting section for fitting with the inner hole of the torsion bar head 24 is provided on the lower side surface of the torsion bar connection plate 26, a key groove is provided on the fitting section, a key groove corresponding to the key groove is provided on the hole wall of the inner hole of the torsion bar head 24, and the torsion bar 25 is engaged with the torsion bar head 24 by a key provided between the fitting section and the torsion bar head 24 and is fixedly connected thereto by a screw. The lower end of the torsion bar 25 is mounted on the base 101 by means of two torsion bar clamping seats 27.

An installation surface is arranged on one side of the periphery of the workbench 23, the installation surface is a vertical plane, a deflector rod 28 is arranged on the installation surface, and the deflector rod 28 extends along the radial direction of the bearing. The radial direction of the workbench 23 is provided with a buffer 29 matched with the shift lever 28 in a stopping way on the base 101, when the workbench rotates and the shift lever 28 moves to the position, the buffer 29 stops the shift lever 28, thereby limiting the rotation angle of the workbench 23 and protecting the shift lever 28. The buffer 29 is fixedly installed on the base 101 through a supporting frame, in this embodiment, there are two buffers 29, one of which is connected to a rod of a buffer cylinder 210, and the other is installed on the supporting frame through a fixing seat, and a driving cylinder 211 is further disposed on the supporting frame, and the driving cylinder 211 is arranged side by side with the buffer 29, and is used for pushing the shift lever 28 so that it drives the workbench 23 to rotate. And a position proximity switch mounting seat 212 is also arranged on the support frame and used for detecting the position of the shifting rod after the shifting rod is pushed in place under the action of the driving cylinder.

The upper side surface of the workbench is provided with a conical positioning pin 213, and the conical positioning pin 213 is used for positioning the workpiece to be measured, so that the position consistency of the workpiece to be measured when falling and the accuracy of a measurement result are ensured.

A first shielding element 41a is arranged at another position on the circumferential side surface of the workbench 23, and the first shielding element 41a is of a rod-shaped structure and extends outwards along the radial direction of the bearing 22 for measuring the poking period value in the rotational inertia measuring state.

The centroid measuring unit comprises weighing platforms 105 arranged around the workbench, in the embodiment, the number of the weighing platforms 105 is three, the weighing platforms 105 are uniformly distributed around the workbench, each weighing platform 105 comprises a weighing bracket 51, a sensor cushion block 52 and a weighing sensor 53, the sensor cushion block 52 is arranged on the weighing bracket 51, the surface of the sensor cushion block 52 has better finish and hardness and is used for bearing a workpiece to be measured during weighing, and after weighing is completed, the workpiece to be measured can fall on the workbench 23 by switching the workpiece to be measured to a rotational inertia measuring state, so that rotational inertia parameter measurement is carried out on the workpiece to be measured. In order to position the workpiece on the weighing platform 105 conveniently, the weighing platform 105 is further provided with a positioning pin 54, in order to pull out the positioning pin 54 conveniently, a pin puller 55 is configured, and after the pin puller 55 is connected with the positioning pin 54 in a threaded fit manner, the pin puller is matched with a positioning pin seat 56 arranged on the weighing platform 105 through shaft hole positioning. In addition, an optical coupler mounting seat 57 is mounted on one of the weighing brackets through a screw, and the optical coupler mounting seat 57 is used for mounting an optical coupler so as to be matched with the first shielding element 41a to complete the measurement of the poking period value.

The lifting support 104 is used for lifting and lowering the workpiece, and has a lifting position and a falling position in the vertical direction, and when the lifting support is in the lifting position, the workpiece to be measured can be lifted to a set height; when in the lowered position, the workpiece can be placed on the table 23. One of the elevating supports 104 is provided with a second light shielding member 41b for detecting the upper limit and the lower limit of the elevating support. In this embodiment, the lifting support 104 is provided with two lifting positioning seats 42 for positioning the workpiece, the lifting positioning seats 42 are installed on the corresponding lifting support 43, in this embodiment, the two lifting support 104 are provided at two radial sides of the working table 23, specifically, a spiral elevator is adopted, the spiral elevator is driven by a motor 106, in this embodiment, the spiral elevators of the two lifting support are connected to the same motor 106 through a shaft system, the motor 106 is installed on the base 101 through a motor support, the shaft system comprises a transmission shaft 44, a coupler 45 and a steering commutator 46, and the whole is arranged in a U shape.

When the device is used for measuring the mass center-rotational inertia parameter of a workpiece, the workpiece to be measured can be firstly hung above the weighing platform 105 through the hoisting equipment, then a support column is arranged between the weighing sensor 53 and the workpiece to be measured, the workpiece to be measured is supported through the support column, at the moment, the weight of the workpiece to be measured can be transmitted to the weighing sensor 53 through the support column, the workpiece to be measured is weighed, and the mass center of mass of the workpiece to be measured can be measured through the combination of the three weighing platforms 105; after the mass and mass center measurement is completed, the workpiece to be measured can be jacked up through the lifting support 104, the lifting support can fall after the support is detached, the workpiece is placed on the workbench 23, and the rotational inertia parameter measurement unit is used for measuring the rotational inertia parameter of the workpiece to be measured.

The utility model discloses a barycenter-inertia parameter measuring device's embodiment 2:

in embodiment 1 of the device for measuring the centroid-moment of inertia parameter of the present invention, the three weighing platforms are respectively provided with separate supports. In this embodiment, three weighing stations are provided on the same ring support around the work table. In other embodiments, the number of weighing platforms may be three or more as required.

The utility model discloses a barycenter-inertia parameter measuring device's embodiment 3:

the utility model discloses a barycenter-inertia parameter measuring device's embodiment 1, what the bearing adopted is air bearing, and in this embodiment, what the bearing adopted is general thrust bearing, and according to verifying, thrust bearing can be suitable for equally.

The utility model discloses a barycenter-inertia parameter measuring device's embodiment 4:

in embodiment 1 of the device for measuring the centroid-moment of inertia parameter of the present invention, two lifting supports are provided. In this embodiment, the number of lift support is one, has annular elevating platform, and annular elevating platform can realize the multiple spot support to the work piece that is surveyed, reaches to rise and the effect of the work piece that is surveyed below.

The utility model discloses a barycenter-inertia parameter measuring device's embodiment 5:

in the embodiment 1 of the device for measuring the mass center-moment of inertia parameter of the present invention, the transmission shaft system adopts a horizontal U-shaped arrangement. In this embodiment, the transmission shaft system adopts a straight-line arrangement mode, that is, the transmission shaft of the transmission shaft system penetrates through the lower part of the base and is respectively in transmission connection with the two lifting supports. Thereby the synchronous lifting function of the two lifting brackets can be realized. In other embodiments, the lifting support can also control lifting through a hydraulic cylinder, and a plurality of lifting supports are connected to the same hydraulic system to realize synchronous control.

Claims

1. The centroid-rotational inertia parameter measuring device comprises a rotational inertia parameter measuring unit (102), wherein the rotational inertia parameter measuring unit (102) comprises a workbench (23), and the centroid-rotational inertia parameter measuring device is characterized in that at least three weighing tables (105) are arranged around the circumference of the rotational inertia parameter measuring unit (102), the weighing tables (105) are lower than the workbench (23) of the rotational inertia parameter measuring unit (102) and are provided with supports for positioning a measured workpiece, each weighing table (105) and each support form a centroid measuring unit (103), a lifting support (104) is further arranged at the periphery of the rotational inertia parameter measuring unit (102), and the lifting support (104) is provided with a lifting position capable of lifting the measured workpiece to a set height and a falling position capable of placing the measured workpiece on the workbench.

2. A centroid-moment of inertia parameter measuring device according to claim 1 wherein there are more than two lifting supports (104) and each lifting support (104) is in synchronous drive connection.

3. Center-of-mass-rotational inertia parameter measuring device according to claim 2, wherein the lifting support (104) comprises two screw lifters, and the two lifting supports (104) are arranged at two radial sides of the worktable (23) and connected to the same driving device through a transmission shaft.

4. The centroid-rotational inertia parameter measurement device according to claim 3, wherein the drive shaft is arranged in a U-shape.

5. Centroid-moment of inertia parameter measurement device according to any of claims 1-4, characterized in that the lifting support (104) is provided with a lifting positioning socket (42) for positioning the workpiece.

6. The centroid-rotational inertia parameter measuring device according to claim 1, wherein the workbench (23) is provided with a deflector rod (28), and a buffer (29) for stop-fit with the deflector rod (28) is arranged at the periphery of the workbench.

7. The centroid-moment of inertia parameter measurement device according to claim 6, wherein a driving cylinder (211) for engaging with the pushing rod (28) is further provided at the periphery of the table (23).

8. The centroid-rotational inertia parameter measuring device as recited in claim 7, wherein a position proximity switch mounting seat (212) is provided on the periphery of the table for position detection after the stick is pushed into position by the driving cylinder.

9. Centroid-moment of inertia parameter measurement device according to any of claims 1 to 4, wherein the weighing station (105) comprises a weighing support (51) and a weighing sensor (53) arranged on the weighing support (51), the weighing support (51) being further provided with a sensor pad (52).

10. Centroid-moment of inertia parameter measurement device according to any of claims 1 to 4, characterized in that the moment of inertia parameter measurement unit (102) and the weighing station (105) are both provided on the same base (101).