CN212766813U - Quality characteristic measuring device - Google Patents
Quality characteristic measuring device Download PDFInfo
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- CN212766813U CN212766813U CN202021365425.XU CN202021365425U CN212766813U CN 212766813 U CN212766813 U CN 212766813U CN 202021365425 U CN202021365425 U CN 202021365425U CN 212766813 U CN212766813 U CN 212766813U
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Abstract
A mass characteristic measuring device belongs to the technical field of aerospace craft mass characteristic measurement, and comprises a tray (1), a supporting seat (2), a supporting pin (3), a measuring pin (4), a sensor (5) and a limiting pin (6); the supporting seat (2) comprises three same supporting frames, and supporting surfaces are arranged at two ends of each supporting frame; one supporting surface contacts the ground, the middle part of the other supporting surface is provided with a boss, and two sides of the other supporting surface are provided with a limiting pin mounting hole and a supporting pin mounting hole; each supporting pin mounting hole is fixedly provided with a supporting pin (3); each limiting pin mounting hole is fixedly provided with a limiting pin (6), a positioning hole is formed in each limiting pin (6) of the tray (1), and the limiting pins (6) are inserted into the positioning holes; a sensor (5) is arranged on a boss of each supporting surface, the measuring pin (4) is arranged on the tray (1), and the ball head of the measuring pin (4) is positioned in the ball socket of the sensor (5).
Description
Technical Field
The utility model relates to a quality characteristic measuring device especially relates to a special measuring equipment of comprehensive that is used for space flight vehicle quality characteristic to measure, belongs to space flight vehicle quality characteristic measurement technical field.
Background
The mass characteristic parameters of the aerospace craft generally comprise mass, mass center, rotational inertia and the like, are one of the original bases for trajectory design, control system design, structural static and dynamic analysis and design, transportation and launching equipment design and the like, are physical quantities needing to be known in the processes of lifting, moving, transporting, erecting, butting and the like, and directly influence the carrying capacity, range or orbit entering precision of the aerospace craft.
At present, the equipment used for the measurement work of the mass characteristics of the aerospace craft mainly comprises five types of electronic platform scales, hook scales, rail scales, trolley-type measuring equipment and table-board type measuring equipment, wherein the electronic platform scales and the hook scales belong to commercially available general equipment and are mainly used for measuring mass data and mass center data cannot be directly measured; the rail weighbridge, the trolley-type measuring equipment and the table-board-type measuring equipment belong to special measuring equipment and can measure data such as mass, mass center, rotational inertia and the like.
In the prior art, the tabletop type measuring equipment used by the aerospace craft is specially designed according to the characteristics of respective products, and all technical indexes of the equipment are not completely the same, but the following problems exist in general:
1) the equipment design and manufacturing costs are high.
Aerospace equipment is required to have high reliability, and the safety coefficient of equipment design is overlarge, so that the production material cost is high; in addition, the production cost of the parts of the equipment is high, the manufacturing and assembling period is long, more circulation cost is increased, and the whole equipment cost is greatly improved finally.
2) The effective utilization rate of the equipment is insufficient.
Due to the high safety factor of the aerospace equipment, although the safety system and the reliability of the aerospace equipment are improved, the rated load of the aerospace equipment cannot be completely reached in the actual use process, the use times are effective, and the waste of the equipment capacity is large.
3) The equipment is large in size and cannot move.
The high safety factor of space equipment also leads to the equipment size great, and generally all designs for fixed, can't remove, has restricted application range.
4) The device function interface is single.
The dedicated mesa formula measuring equipment of space flight is many to certain product research and development alone, and equipment interface function is single, lacks the flexibility.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem be: the device for measuring the quality characteristics overcomes the defects of the prior art and comprises a tray, a supporting seat, a supporting pin, a measuring pin, a sensor and a limiting pin; the tray is provided with a through hole and a threaded hole which are externally connected; the supporting seat comprises three same supporting frames which are uniformly distributed and connected in sequence along the circumference, and two ends of each supporting frame are provided with supporting surfaces; one of the supporting surfaces contacts the ground, the middle part of the other supporting surface is provided with a boss, and both sides of the other supporting surface are provided with a limiting pin mounting hole and a supporting pin mounting hole; each supporting pin mounting hole is fixedly provided with a supporting pin, and the middle part of each supporting pin is provided with a convex supporting force application part; each limiting pin mounting hole is fixedly provided with a limiting pin, the tray is provided with a positioning hole at each limiting pin, one end of each limiting pin, far away from the limiting pin mounting hole, is inserted into the positioning hole, and the limiting pin (6) is not in contact with the positioning hole; the middle part of the limit pin is provided with a convex limit stressing part; a sensor is arranged on a boss of each supporting surface, the end surface of the sensor, which is far away from the boss, is a ball socket, the number of the measuring pins is equal to that of the sensors, the measuring pins are arranged on a tray, and the end surfaces of the measuring pins, which are far away from the tray, are ball heads; the ball head of the measuring pin is positioned in the ball socket of the sensor.
The utility model discloses the purpose is realized through following technical scheme:
a quality characteristic measuring device comprises a tray, a supporting seat, a supporting pin, a measuring pin, a sensor and a limiting pin; the tray is provided with a through hole and a threaded hole which are externally connected; the supporting seat comprises three same supporting frames which are uniformly distributed and connected in sequence along the circumference, and two ends of each supporting frame are provided with supporting surfaces; one of the supporting surfaces contacts the ground, the middle part of the other supporting surface is provided with a boss, and both sides of the other supporting surface are provided with a limiting pin mounting hole and a supporting pin mounting hole; each supporting pin mounting hole is fixedly provided with a supporting pin, and the middle part of each supporting pin is provided with a convex supporting force application part; each limiting pin mounting hole is fixedly provided with a limiting pin, the tray is provided with a positioning hole at each limiting pin, and one end of each limiting pin, which is far away from the limiting pin mounting hole, is inserted into the positioning hole; the middle part of the limit pin is provided with a convex limit stressing part; a sensor is arranged on a boss of each supporting surface, the end surface of the sensor, which is far away from the boss, is a ball socket, the number of the measuring pins is equal to that of the sensors, the measuring pins are arranged on a tray, and the end surfaces of the measuring pins, which are far away from the tray, are ball heads; the ball head of the measuring pin is positioned in the ball socket of the sensor.
In the above mass characteristic measurement device, preferably, the cross section of the support urging portion is rectangular or hexagonal. The support afterburning portion's setting is convenient for adjust the height of supporting pin, reduces the back fast, realizes the quality characteristics measurement, rises the back fast, avoids the long-term atress of sensor, simple structure, easy operation, and is convenient high-efficient.
In the mass characteristic measuring device, preferably, the cross section of the limit forcing part is rectangular or hexagonal. The height of the limiting pin can be conveniently adjusted by the aid of the limiting stress application part, the limiting pin can be accurately limited after being rapidly lifted, and once the tray is inclined, the limiting stress application part can be effectively supported, and damage to equipment is avoided.
The mass characteristic measuring device preferably further comprises a support pin locking nut which is sleeved on the support pin in a manner of clinging to the support surface. The support pin locking nut can effectively prevent the support pin from loosening, and is practical, simple, convenient and effective.
The quality characteristic measuring device preferably further comprises a limiting pin locking nut, and the limiting pin locking nut is sleeved on the limiting pin in a manner of clinging to the supporting surface. The stop pin locking nut can effectively prevent the stop pin from loosening, and is practical, simple, convenient and effective.
Preferably, in the mass characteristic measuring apparatus, the sensor is a spoke-type weighing sensor. Due to the adoption of the spoke type weighing sensor, the manufacturing cost of the equipment is reduced by doctors, and the requirement of quality characteristic measurement can be met.
In the quality characteristic measuring device, preferably, one end of the limiting pin, which is far away from the limiting pin mounting hole, is a ball head, the ratio of the diameter of the ball head of the limiting pin to the diameter of the ball head of the measuring pin is 1.1-1.3, and the ratio of the diameter of the ball head of the limiting pin to the diameter of the positioning hole in the tray is 0.7-0.8; the mounting height of the sensor is adjustable, and the adjusting range is +/-5 mm. The diameter relation of the ball head diameter of the limiting pin and the diameter relation of the positioning hole in the tray, the ball head diameter of the limiting pin and the ball head diameter of the measuring pin influence the positioning accuracy of the limiting pin, the butt joint feasibility of the sensor and the measuring pin is also considered, and the operability and the effectiveness of limiting protection measures are guaranteed. The height of the sensor is adjustable, so that the flexibility and the application range of the device are increased.
In the mass characteristic measuring device, it is preferable that a ratio of a ball socket diameter of the measuring joint of the sensor to a ball head diameter of the measuring pin is 1.1 to 1.2, and the ball socket diameter of the sensor is not less than 27 mm. The relation between the diameter of the ball socket of the measuring joint and the diameter of the ball head of the measuring pin ensures the accuracy of butt joint of the ball socket and the measuring pin, and reduces the alignment difficulty; the ball socket size further guarantees the reliability of bearing force.
In the above quality characteristic measuring device, preferably, one end of the support pin, which is far away from the support pin mounting hole, is a ball head, the diameter of the ball head of the support pin is not more than 36mm, and the support height of the support pin after being mounted on the support seat is not less than 117.5 mm.
Above-mentioned quality characteristics measuring device, it is preferred, the excircle diameter of tray is not less than 1500mm, is equipped with three measuring point on the tray, and three measuring point is along circumference evenly distributed, and the ratio of this circumference diameter and excircle diameter is 0.8. The three measuring points are arranged, so that on one hand, the validity of the measured data is guaranteed, and on the other hand, convenience is provided for obtaining the sensor data and calculating.
The utility model discloses compare in prior art and still have following beneficial effect:
the diameter of the maximum excircle size of the device is 1500mm, the maximum height is 637.5mm, each main component structure has weight reduction and size reduction design, and compared with similar equipment, the device has relatively small size and light weight, but can meet the measurement requirements of most of the conventional small aircraft sections; the commercial mature sensor is adopted, so that the cost of components is reduced, and the requirement on measurement precision is met; the bottom of the equipment is provided with the conveying device, so that the whole equipment can be conveyed, and the measurement preparation time after the equipment is moved is shortened; various interfaces are arranged on the table top of the equipment tray and comprise mounting holes and positioning pins, so that the mounting requirements of general switching devices are met, and the flexibility of the equipment is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of a mass characteristic measurement apparatus according to an embodiment of the present application;
fig. 2 is a schematic structural view of a tray of the quality characteristic measurement apparatus according to the embodiment of the present application;
FIG. 3 is a schematic structural diagram of a support base of a mass property measuring apparatus according to an embodiment of the present disclosure;
FIG. 4 is a schematic view of a support pin structure of a mass property measurement device according to an embodiment of the present application;
FIG. 5 is a schematic view of a measuring pin structure of a mass property measuring device according to an embodiment of the present application;
fig. 6 is a schematic view of a sensor structure of a mass property measurement apparatus according to an embodiment of the present application;
fig. 7 is a schematic structural view of a stopper pin of the quality characteristic measurement apparatus according to the embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
A quality characteristic measuring device comprises a tray 1, a supporting seat 2, a supporting pin 3, a measuring pin 4, a sensor 5 and a limiting pin 6; the tray 1 is provided with a through hole and a threaded hole which are externally connected; the supporting seat 2 comprises three same supporting frames which are uniformly distributed and connected in sequence along the circumference, and two ends of each supporting frame are provided with supporting surfaces; one of the supporting surfaces contacts the ground, the middle part of the other supporting surface is provided with a boss, and both sides of the other supporting surface are provided with a limiting pin mounting hole and a supporting pin mounting hole; each supporting pin mounting hole is fixedly provided with a supporting pin 3, and the middle part of each supporting pin 3 is provided with a convex supporting force application part; each limiting pin mounting hole is fixedly provided with a limiting pin 6, a positioning hole is formed in each limiting pin 6 of the tray 1, one end, far away from the limiting pin mounting hole, of each limiting pin 6 is inserted into the positioning hole, and the limiting pin (6) is not in contact with the positioning hole; the middle part of the limit pin 6 is provided with a convex limit stressing part; a sensor 5 is arranged on a boss of each supporting surface, the end surface of the sensor 5, far away from the boss, is a ball socket, the number of the measuring pins 4 is equal to that of the sensors 5, the measuring pins 4 are arranged on the tray 1, and the end surface of the measuring pins 4, far away from the tray 1, is a ball head; the ball of the measuring pin 4 is located in the ball socket of the sensor 5.
As a preferable scheme of the present invention, the cross section of the supporting and urging portion is rectangular or hexagonal.
As a preferred scheme of the utility model, the cross section of spacing afterburning portion is rectangle or hexagon.
As a preferred scheme of the utility model, still include supporting pin lock nut 301, supporting pin lock nut 301 hugs closely the supporting surface suit on supporting pin 3.
As an optimal scheme of the utility model, still include spacer pin lock nut 601, spacer pin lock nut 601 hugs closely the holding surface suit on spacer pin 6.
As an optimized scheme of the utility model, the sensor adopts spoke formula weighing sensor.
As an optimized scheme of the utility model, the one end of spacer pin 6, which is far away from the mounting hole of the spacer pin, is the bulb, the ratio of the bulb diameter of spacer pin 6 to the bulb diameter of measuring pin 4 is 1.1-1.3, preferably 1.2, and the ratio of the bulb diameter of spacer pin 6 to the diameter of the positioning hole on tray 1 is 0.7-0.8, preferably 0.75; the mounting height of the sensor 5 is adjustable, and the adjusting range is +/-5 mm.
As an optimized scheme of the utility model, the ratio of the ball socket diameter of measuring joint 501 of sensor 5 and the bulb diameter of measuring pin 4 is 1.1 ~ 1.2, preferably 1.15, just the ball socket diameter of sensor 5 is not less than 27 mm.
As a preferred scheme of the utility model, the one end that supporting pin 3 kept away from the supporting pin mounting hole is the bulb, and the bulb diameter of supporting pin 3 is not more than 36mm, and supporting pin 3 installs supporting height is not less than 117.5mm behind supporting seat 2.
As an optimized scheme of the utility model, tray 1's excircle diameter is not less than 1500mm, is equipped with three measuring point on the tray 1, and three measuring point is along circumference evenly distributed, and this circumference diameter is 0.8 with the ratio of excircle diameter.
Example (b):
as shown in fig. 1, the present application relates to a mass property measuring device including a tray 1, a support base 2, a support pin 3, a measuring pin 4, a sensor 5, and a stopper pin 6.
In the preferred embodiment of this application, as shown in fig. 2, the tray 1, the mesa that supports the product, mesa circumference diameter 1500mm, the mesa is opened with through-hole and screw hole, satisfies various functional requirements, in addition still includes: the lifting point is connected to the position 1200mm in diameter of the tray, the lifting point adopts an M12 bolt, the levelness of the tray 1 can be adjusted in an auxiliary mode, or the tray 1 is mounted and dismounted, and the tray 1 is further provided with a center pin hole to meet the size measurement requirement under the individual condition.
In a preferred embodiment of the present application, as shown in fig. 3, the support base 2 is formed by integrally welding upper structures such as a sensor and a tray, the support base is provided with three support frames, each support frame is provided with an upper support surface and a lower support surface, a boss in the middle of the upper support surface is a sensor 5 positioning and mounting surface, the sensor 5 is a weighing sensor, 8 threaded holes uniformly distributed on the boss are used for fixing the weighing sensor, and two sides of the boss on the upper support surface are respectively provided with a limit pin mounting hole and a support pin mounting hole; the contact part of the lower supporting surface and the ground increases the area, and the ribs are used for increasing the rigidity; the supporting seat bottom is connected through three transportation connecting rods and is used for using the whole mobile equipment of fork truck simultaneously. A plurality of lightening holes are arranged on the supporting seat 2.
In the preferred embodiment of the present invention, as shown in fig. 4, the support pin 3 is sleeved with a support pin locking nut 301, the support pin 3 protects the sensor 5, prevents the sensor 5 from being influenced by the pressure of the tray 1 for a long time, and supports the tray 1 by using the support pin 3 to protect the sensor 5 when the quality measuring table is not used. The support pin locking nut 301 is sleeved on the support pin 3 to prevent the support pin 3 from being loosely connected with the support base, and the support forcing part is arranged at the middle part of the support pin 3 and serves as a forcing surface to facilitate the height adjustment of the support pin 3 by using a wrench.
In the preferred embodiment of the present application, as shown in fig. 5, a measuring pin fixing nut 401 is sleeved on the measuring pin 4, the measuring pin 4 is fixed on the tray 1 through upper and lower fixing nuts, and the spherical surface of the lower end of the measuring pin 4 abuts against the joint of the sensor 5, so that the automatic alignment of the measuring pin 4 can be ensured because the joint of the sensor 5 is a ball-and-socket surface; the upper part of the measuring pin 4 is fixedly connected with the tray 1 through a fixing nut, and the measuring pin can be adjusted up and down relative to the tray to adjust the height of the tray.
In the preferred embodiment of the present application, as shown in fig. 6, a measuring joint 501 is provided on the sensor 5, a sensor fixing bolt 502 is used to fix the sensor 5, the number of the measuring joints 501 is 3, the sensor 5 is positioned by a boss in the middle of the upper end surface of the supporting seat, the upper end of the measuring joint 501 is a ball-and-socket surface for supporting the measuring pin 4, and the sensor 5 is mounted on the supporting seat 2 by using 8 fixing bolts 502.
In the preferred embodiment of the present application, as shown in fig. 7, a limit pin lock nut 601 is sleeved on the limit pin 6, the limit pin 6 plays a role in limiting and protecting the tray 1, and a limit forcing part is arranged in the middle of the limit pin 6 to prevent the tray 1 from moving greatly and even falling off when unbalanced force is loaded or under other abnormal conditions; the stop pin lock nut 601 is sleeved on the stop pin 6 to prevent the stop pin 6 from being connected with the supporting seat 2 loosely, the upper end of the stop pin 6 is inserted into the positioning hole on the tray 1 and is not directly contacted with the positioning hole of the tray 1, and the limiting stress application part at the middle part of the stop pin 6 is also used as a stress application surface to facilitate the use of a wrench for adjusting the height.
The details of the present invention not described in detail in the specification are well known to those skilled in the art.
Claims (10)
1. A mass characteristic measuring device is characterized by comprising a tray (1), a supporting seat (2), a supporting pin (3), a measuring pin (4), a sensor (5) and a limiting pin (6);
the tray (1) is provided with a through hole and a threaded hole which are externally connected;
the supporting seat (2) comprises three same supporting frames which are uniformly distributed along the circumference and are sequentially connected, and supporting surfaces are arranged at two ends of each supporting frame; one of the supporting surfaces contacts the ground, the middle part of the other supporting surface is provided with a boss, and both sides of the other supporting surface are provided with a limiting pin mounting hole and a supporting pin mounting hole;
each supporting pin mounting hole is fixedly provided with one supporting pin (3), and the middle part of each supporting pin (3) is provided with a convex supporting force application part;
each limiting pin mounting hole is fixedly provided with one limiting pin (6), a positioning hole is formed in each limiting pin (6) of the tray (1), one end, far away from the limiting pin mounting hole, of each limiting pin (6) is inserted into the positioning hole, and the limiting pins (6) are not in contact with the positioning holes; the middle part of the limit pin (6) is provided with a convex limit stressing part;
a sensor (5) is installed on a boss of each supporting surface, the end face, far away from the boss, of each sensor (5) is a ball socket, the number of the measuring pins (4) is equal to that of the sensors (5), the measuring pins (4) are installed on the tray (1), and the end face, far away from the tray (1), of each measuring pin (4) is a ball head; the ball head of the measuring pin (4) is positioned in the ball socket of the sensor (5).
2. A mass spectrometry apparatus according to claim 1 wherein the support force application portion is rectangular or hexagonal in cross section.
3. A mass spectrometry apparatus according to claim 1 wherein the limiting stress application portion is rectangular or hexagonal in cross section.
4. A mass property measurement device according to claim 1, further comprising a support pin lock nut (301), the support pin lock nut (301) being fitted on the support pin (3) against the support surface.
5. A mass property measuring device according to claim 1, further comprising a spacing pin lock nut (601), wherein the spacing pin lock nut (601) is sleeved on the spacing pin (6) in close contact with the supporting surface.
6. A mass spectrometry apparatus according to any one of claims 1 to 5, wherein the sensor is a spoke-type load cell.
7. A mass property measuring device according to any one of claims 1 to 5, wherein the end of the limit pin (6) far away from the limit pin mounting hole is a ball, the ratio of the ball diameter of the limit pin (6) to the ball diameter of the measuring pin (4) is 1.1 to 1.3, and the ratio of the ball diameter of the limit pin (6) to the diameter of the positioning hole on the tray (1) is 0.7 to 0.8; the mounting height of the sensor (5) is adjustable, and the adjusting range is +/-5 mm.
8. A mass property measuring apparatus according to claim 7, wherein a ratio of a ball-and-socket diameter of the measuring joint (501) of said sensor (5) to a ball-and-head diameter of the measuring pin (4) is 1.1 to 1.2, and a ball-and-socket diameter of said sensor (5) is not less than 27 mm.
9. A mass property measuring device according to claim 7, wherein the end of the support pin (3) away from the support pin mounting hole is a ball head, the diameter of the ball head of the support pin (3) is not more than 36mm, and the support height of the support pin (3) is not less than 117.5mm after being mounted on the support base (2).
10. A mass spectrometry apparatus according to any one of claims 1 to 5, wherein the outer diameter of the tray (1) is not less than 1500mm, three measurement points are provided on the tray (1), the three measurement points are uniformly distributed along the circumference, and the ratio of the diameter of the circumference to the diameter of the outer circumference is 0.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021365425.XU CN212766813U (en) | 2020-07-13 | 2020-07-13 | Quality characteristic measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021365425.XU CN212766813U (en) | 2020-07-13 | 2020-07-13 | Quality characteristic measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212766813U true CN212766813U (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021365425.XU Active CN212766813U (en) | 2020-07-13 | 2020-07-13 | Quality characteristic measuring device |
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| CN (1) | CN212766813U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115355773A (en) * | 2022-07-26 | 2022-11-18 | 蓝箭航天空间科技股份有限公司 | Leveling force measuring device for rocket test |
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2020
- 2020-07-13 CN CN202021365425.XU patent/CN212766813U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115355773A (en) * | 2022-07-26 | 2022-11-18 | 蓝箭航天空间科技股份有限公司 | Leveling force measuring device for rocket test |
| CN115355773B (en) * | 2022-07-26 | 2023-12-05 | 浙江蓝箭航天空间科技有限公司 | Leveling force measuring device for rocket test |
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Effective date of registration: 20220815 Address after: 233000 Plant No. 1, Science and Technology Innovation Industrial Park, Changqing Township, Yuhui District, Bengbu City, Anhui Province Patentee after: Bengbu Lingkong Technology Co., Ltd. Address before: 100176 1101, building 3, yard 2, Ronghua South Road, economic and Technological Development Zone, Daxing District, Beijing Patentee before: Beijing Lingkong Tianxing Technology Co.,Ltd. |