CN218297453U

CN218297453U - Leveling force measuring device

Info

Publication number: CN218297453U
Application number: CN202221931923.5U
Authority: CN
Inventors: 王登; 戴政; 袁宇; 沈超; 张彦杰; 李云龙
Original assignee: Landspace Technology Co Ltd
Current assignee: Landspace Technology Co Ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2023-01-13
Anticipated expiration: 2032-07-26

Abstract

The utility model provides a leveling measuring force device for support the landing leg of awaiting test rocket. The leveling force measuring device of the utility model comprises a bearing plate, a protective cover, a bracket, at least three supporting and adjusting mechanisms, a lifter, a force measuring sensor and a spherical hinge guide mechanism which are arranged on the central axis of the bracket in sequence from low to high; the protective cover is connected with the bearing plate so as to wrap part of the support in the protective cover; all the supporting and adjusting mechanisms are uniformly distributed on the periphery of the spherical hinge guide mechanism, the bottom of the supporting and adjusting mechanism is arranged on the support, and the top of the supporting and adjusting mechanism is used for supporting the bearing plate. The ball joint guide mechanism at least comprises a ball head and a ball socket; the ball head is arranged at the bottom of the bearing plate, and the ball socket is arranged at the top of the force transducer; the support adjusting mechanism is lowered to be far away from the bearing plate, the lifter is driven to move, and the force measuring sensor, the ball head and the ball socket are driven to lift, so that the height of the bearing plate is changed, and the leveling of each supporting leg of the rocket is realized; the gravity of the rocket can be measured through the load cell after the rocket is leveled.

Description

Leveling force measuring device

Technical Field

The utility model relates to a rocket launch test technical field specifically is a leveling force measuring device.

Background

In recent years, the vertical take-off and landing test is regarded as a key step in the development process of the recoverable rocket technology at home and abroad. At present, a launching support system is basically designed in a customized non-standard mode, but the general scheme, the size, the weight and the like of each test rocket are different, so that the current launching support system cannot meet the requirements of adjustment and force measurement before vertical take-off and landing tests of various rockets.

Therefore, it is highly desirable to provide a leveling force measuring device that can accommodate different diameters and takeoff masses.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned technical problem among the correlation technique, the utility model provides a leveling force measuring device adopts the modularized design thinking, and overall structure is compact, and easy operation is reliable, can realize rocket levelness adjustment and gravity measurement after field quick deployment, accomplishes levelness adjustment and gravity measurement demand before the rocket VTOL experiment.

The utility model provides a leveling force measuring device, which is used for supporting each supporting leg of a rocket to be tested and comprises a bearing plate, a protective cover, a bracket, at least three supporting and adjusting mechanisms, a lifter, a force measuring sensor and a spherical hinge guide mechanism, wherein the lifter, the force measuring sensor and the spherical hinge guide mechanism are sequentially arranged on the central axis of the bracket from low to high; the protective cover is connected with the bearing plate so as to wrap part of the bracket in the protective cover; each support adjusting mechanism is uniformly distributed on the periphery of the spherical hinge guide mechanism, the bottom of the support adjusting mechanism is arranged on the support, and the top of the support adjusting mechanism is used for supporting the force bearing plate;

the ball joint guide mechanism at least comprises a ball head and a ball socket; the ball head is arranged at the bottom of the bearing plate, and the ball socket is arranged at the top of the force transducer;

the support adjusting mechanism is lowered to be far away from the bearing plate, the lifter is driven to move, and the force measuring sensor, the ball head and the ball socket are driven to lift, so that the height of the bearing plate is changed, and the leveling of each supporting leg of the rocket is realized; after the rocket is leveled, the gravity of the rocket can be measured through the force measuring sensor;

the support adjusting mechanism is heightened to support the bearing plate, the lifter is driven to lower, the ball socket is separated from the ball head to form a gap, so that a static ignition test is carried out on the rocket, and the force measuring sensor is protected.

In one embodiment, the ball joint guide mechanism further comprises a ball head seat, a ball head ring and a guide sleeve; one end of the ball head is connected with the bearing plate through the ball head seat, and the other end of the ball head is limited in the ball socket by the ball head ring; the outer annular surface of the guide sleeve is fixedly arranged on the support, and the inner annular surface of the guide sleeve is abutted against the outer annular surface of the ball socket, so that the ball socket can slide along the guide sleeve under the driving of the elevator.

In one embodiment, there is a space between the ball ring and the ball head in the direction of movement of the ball head; therefore, in the stage of carrying out static ignition test on the rocket, the ball head can be limited by the ball head ring after being separated from the ball socket.

In one embodiment, an oilless shaft sleeve is arranged between the inner ring of the guide sleeve and the ball socket, and a compression ring is arranged at the top of the oilless shaft sleeve; the annular bottom in the uide bushing is equipped with and is used for supporting the brace table of oilless axle sleeve, the clamping ring will oilless axle sleeve compresses tightly the brace table.

In one embodiment, six support adjusting mechanisms are uniformly arranged along the periphery of the spherical hinge guide mechanism.

In the above embodiment, each of the support adjusting mechanisms includes a screw support, a screw sleeve, a bolt, and a nut, which are provided to the bracket; one side of the spiral sleeve is arranged in the spiral support in a threaded connection mode, and the other side of the spiral sleeve is used for supporting the force bearing plate; the bolt sequentially penetrates through the bearing plate, the spiral support and the spiral sleeve and then is connected with the nut; an operating rod is arranged on one side of the spiral sleeve close to the bearing plate; the operating rod is driven to enable the spiral sleeve to ascend or descend relative to the spiral support so as to support or separate the bearing plate.

In one embodiment, the end of the screw sleeve for supporting the bearing plate is a ball head structure, and a ball socket cover matched with the ball head structure is further arranged between the ball head structure and the bearing plate; the screw sleeve stably supports the bearing plate through the ball socket cover.

In one embodiment, the outer wall of the rod part of the bolt is arranged at a distance from the inner wall of the screw sleeve so as to avoid clamping of the bolt and the screw sleeve.

In one embodiment, a washer is provided between the bolt cap of the bolt and the messenger.

In one embodiment, the gasket includes a spherical upper gasket and a spherical bowl lower gasket disposed in cooperation with each other.

The utility model discloses leveling force measuring device adopts the modularized design, compact structure, and easy operation is reliable, not only can realize the leveling to rocket support process, can also record the gravity of rocket through force cell sensor, and utilize after gravity measurement accomplishes to set up in force cell sensor outlying support guiding mechanism and support the rocket, utilize the lift to reduce force cell sensor and make ball socket and bulb break away from, make force cell sensor show and return to zero, damage force cell sensor when avoiding the rocket to carry out static ignition test.

Those skilled in the art will recognize additional features and advantages upon reading the detailed description, and upon viewing the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a leveling force measuring device supporting a rocket, utilizing an embodiment of the present invention;

fig. 2 is a schematic structural view of a leveling force measuring device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a ball joint guide mechanism according to an embodiment of the present invention;

fig. 4 is a schematic diagram of the embodiment of the present invention with 6 supporting and adjusting mechanisms.

Fig. 5 is a schematic structural diagram of a support adjustment mechanism according to an embodiment of the present invention;

fig. 6 is an external view of a leveling force measuring device according to an embodiment of the present invention;

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the drawings. Spatial relationship terms such as "below," "at \8230," "lower," "above," "at \8230," "upper," "higher," and the like are used for convenience in description to explain the positioning of one element relative to a second element, indicating that the terms are intended to encompass different orientations of the device in addition to orientations different from those shown in the figures. Further, for example, the phrase "one element is over/under another element" may mean that the two elements are in direct contact, or that there is another element between the two elements. Furthermore, terms such as "first", "second", and the like, are also used to describe various elements, regions, sections, etc. and should not be taken as limiting. Like terms refer to like elements throughout the description.

Referring to fig. 1, the present invention provides a leveling force measuring device 100 for supporting the supporting legs of a rocket 200 to be tested. If the rocket supporting legs 300 are three, the leveling force measuring device 100 provided by the utility model is respectively arranged at the corresponding position of each supporting leg 300, so as to realize the supporting and leveling of the rocket. The utility model discloses leveling force measuring device can adapt to the rocket support work of multiple diameter size completely, can also set up corresponding leveling force measuring device according to the landing leg quantity and the position of rocket, and easy operation is reliable, can deploy fast in the field, has higher flexibility, and accommodation is wider.

Referring to fig. 2, the utility model provides a pair of leveling measuring force device for support the landing leg of rocket waiting to be tested, including load board 1, protection casing 2, support 3, at least three support guiding mechanism 4 and set gradually lift 5, force cell sensor 6 and ball pivot guiding mechanism 7 on support 3 axis from low to high. The protective cover 2 is connected with the bearing plate 1 so as to wrap part of the bracket 3 in the protective cover 2. The supporting and adjusting mechanisms 4 are uniformly distributed on the periphery of the spherical hinge guide mechanism 7, the bottom of the supporting and adjusting mechanism is arranged on the support 3, and the top of the supporting and adjusting mechanism is used for supporting the bearing plate 1. It should be noted that there is no connection relationship between the support adjusting mechanism 4 and the bearing plate 1, and the support adjusting mechanism 4 is only used for supporting the bearing plate 1.

The ball joint guide mechanism 7 at least comprises a ball head 71 and a ball socket 72, one end of the ball head 71 is arranged at the bottom of the bearing plate 1, and the other end of the ball head 71 is in matched butt joint with the ball socket 72 arranged at the top of the force measuring sensor 6.

Specifically, the support adjusting mechanism 4 is adjusted to be away from the bearing plate 1 by lowering, namely the gravity of the rocket is completely carried by the spherical hinge guide mechanism 7. And then the lifter 5 is driven to move to drive the force-measuring sensor 6, the ball head 71 and the ball socket 72 to carry out lifting movement so as to change the height of the bearing plate 1, thereby realizing the height adjustment of each supporting leg of the rocket and leveling the rocket. The rocket gravity can be measured through the load cell 6 after the rocket is leveled.

After the gravity of the rocket is measured, the supporting and adjusting mechanism 4 can be heightened to support the bearing plate 1, and after the stable support of the bearing plate is completed, the lifter 5 is driven to lower. In view of the connection of the ball 71 to the bearing plate 1, only the ball socket 72 and the load cell 6 will be lowered with the elevator 5, and the ball socket 72 will be disengaged from the ball 71 and form a gap. And (3) continuously lowering the lifter 5, so that a gap of 10-15 mm is formed between the ball head 71 and the ball socket 72, the load cell 6 displays zero, and at the moment, the load of the rocket is transmitted to each supporting and adjusting mechanism 4 from the bearing plate 1 and then transmitted to the bracket, so that the load cell 6 and the lifter 5 can be prevented from being damaged by vibration in the static ignition test of the rocket.

In order to reduce the operation difficulty on site, the electric wrench can be used for driving the speed reducer to drive the elevator to move, so that the elevator drives the bearing plate to lift and regulate, and the height adjusting function of the rocket supporting leg is also realized.

The utility model discloses leveling measuring force device for support rocket's landing leg. That is to say, all be equipped with one below every landing leg the utility model discloses a leveling measuring force device. The leveling mode can be that the heights of the supporting legs are adjusted by jointly adjusting the lifters of the leveling force measuring devices, so that the rocket is leveled, and the gravity of the rocket is obtained according to the force measuring sensors of the leveling force measuring devices after leveling. After the gravity of the rocket is obtained, each supporting and adjusting mechanism is adjusted to reliably support the bearing plate, the lifter is operated to drive the force measuring sensor and the ball socket to descend, so that the ball head and the ball socket can be separated, and a static ignition test of the rocket can be carried out.

The utility model discloses a leveling measuring force device adopts the module design, and spare part is small in quantity, and it is convenient to install, and easy operation is reliable, is applicable to rocket VTOL experiment moreover and to the requirement of mobility, can satisfy the leveling precision and be less than or equal to 0.05 to force cell sensor can not impaired technical requirement when satisfying rocket static ignition test.

In the above embodiment, the brackets are bent by steel plates, and rib plates are welded on the inner and outer sides to reinforce the structural strength, and the brackets are connected by bolt sets.

Referring to fig. 2 and 3, further, the ball joint guide mechanism 7 further includes a ball seat 73, a ball ring 74, and a guide sleeve 75. One end of the ball head 71 is connected with the force bearing plate 1 through a ball head seat 73, and the other end is limited in the ball socket 72 by a ball head ring 74. The guide sleeve 75 is provided between the ball socket 72 and the bracket 3 for providing a guide for the up and down movement of the ball socket 72. Specifically, the outer annular surface of the guide bush 75 is connected to the bracket 3 by a fixing bolt, and the inner annular surface abuts against the outer annular surface of the ball 72, so that the ball 72 can slide along the inner annular surface of the guide bush 75 by driving of the elevator 5. The utility model discloses leveling measuring force device under the guide effect of uide bushing, can prevent that the ball socket from taking place the skew, guarantees that ball socket and bulb can reliably dock. The ball head is limited in the ball socket by the ball head ring, and reliable butt joint of the ball head and the ball socket is further ensured.

In one embodiment, the ball head ring 74 has a spacing X from the ball head 71 in the direction of movement of the ball head 71, the spacing X being 15mm to 20mm. That is, the ball 71 has a certain moving space between the ball ring 74 and the ball socket 72 in the moving direction of the ball 71. Therefore, in the stage of carrying out static ignition test on the rocket, the ball head 71 can be separated from the ball socket 72 and then limited by the ball head ring 74, so that not only can the gravity load of the rocket be prevented from being transmitted to the force transducer and the lifter, but also the ball head can be prevented from being separated from the limit of the ball socket and the ball head ring.

With continued reference to fig. 3, further, in order to reduce friction and surface wear between the outer wall of the ball socket and the guide sleeve, an oilless bushing 76 may be provided between the inner race of the guide sleeve 75 and the ball socket 72, and a pressing ring 77 may be provided on the top of the oilless bushing 76. One side of the pressing ring 77 is disposed on the top of the guide sleeve 75 through a fixing bolt, and the other side of the pressing ring compresses the oilless bushing 76, and the displacement of the oilless bushing 76 in the axial direction (the lifting direction) is limited by the pressing ring 77. Specifically, a support table for supporting the oilless bushing 76 is provided at the bottom of the inner annular surface of the guide sleeve 75, and the oilless bushing 76 is pressed against the support table by the pressing ring 77, so that the oilless bushing 76 is prevented from moving along with the ball socket 72.

The embodiment of the utility model provides an oilless shaft sleeve's material is copper.

Referring to fig. 4, in order to lift the support of the rocket by the support adjusting mechanisms, the number of the support adjusting mechanisms may be increased appropriately. For example, as shown in fig. 4, 6 support adjusting mechanisms 4 may be uniformly arranged on the periphery of the spherical hinge guide mechanism, so that the support stability of the medium-sized rocket is obviously improved.

Referring to fig. 5, in any of the above embodiments, each support adjusting mechanism includes a screw support 41 provided on the rib of the support 3, a screw sleeve 42, a bolt 43, and a nut 44. One side of the spiral sleeve 42 is provided with an external thread, the threaded support is provided with an internal thread matched with the external thread of the spiral sleeve 42, the spiral sleeve 42 is arranged in the spiral support 41 in a threaded connection mode, and the other side of the spiral sleeve 42 is used for supporting the bearing plate 1. In order to prevent the displacement of the screw sleeve 42 when supporting the rocket, the force bearing plate 1, the screw support 41 and the screw sleeve 42 are sequentially threaded by the bolts 43 and then connected with the nuts 44 arranged on the other side of the rib plate of the bracket 3, so that the screw sleeve and the screw support can be stably limited between the bracket 3 and the force bearing plate 1. When the support of the support adjusting mechanism needs to be released, the connection between the bolt and the nut can be released, and then the spiral sleeve is driven to descend until the spiral sleeve is separated from the bearing plate.

Further, an operating rod 421 is arranged on one side of the screw sleeve 42 close to the bearing plate 1. In order to facilitate the lifting of the spiral sleeve 42, the spiral sleeve 42 can be lifted or lowered relative to the spiral support 41 by driving the operating rod 421, so as to support or separate the bearing plate 1.

In one embodiment, the end of the screw sleeve 42 for supporting the force bearing plate 1 is a ball head structure, a ball head cover 45 matched with the ball head structure is further arranged between the ball head structure and the force bearing plate 1, and a fixing ring 47 is further arranged on the periphery of the ball head structure of the screw sleeve 42. After the ball cover 45 and the fixing ring 47 are connected by the fixing bolt, the ball head structure of the screw sleeve 42 is limited between the ball cover and the fixing ring. The diameter of the ball socket cover 45 is larger than that of the ball head structure of the screw sleeve 42, so that the stress area between the ball socket cover 45 and the bearing plate 1 can be increased, and the screw sleeve 42 can stably support the bearing plate 1 through the ball socket cover 45.

The utility model discloses the bulb structure of scroll cover passes through the ball socket lid and is connected with the load board, has avoided scroll cover and load board direct contact, has protected the contact position of load board and scroll cover to a certain extent. Under the heavy load that produces after the rocket ignition, the ball socket lid can protect the spiral shell, prevents that the position of spiral shell and bearing plate local contact from taking place to warp, also can avoid the aperture of spiral shell to change simultaneously.

Furthermore, the outer wall of the rod part of the bolt 43 and the inner wall of the spiral sleeve 42 are arranged at intervals, so that the phenomenon of clamping stagnation or locking between the bolt and the spiral sleeve can be avoided when the bearing plate inclines, and the influence on the precision of rocket gravity testing is avoided.

In one embodiment, in view of the fact that the bolt 43 passes through the messenger plate 1 and then through the turnbuckle 42 and the screw mount 41, in order to prevent damage caused by excessive local pressure between the bolt 43 and the messenger plate 1, a washer 46 can be provided between the cap of the bolt 43 and the messenger plate 1 to increase the force-bearing area of the bolt and the messenger plate. The washer 46 may be an annular washer or may be formed by mating a spherical upper washer with a spherical bowl-shaped lower washer. The gasket formed by the matching arrangement of the spherical upper gasket and the spherical bowl-shaped lower gasket can adapt to the deflection of a certain angle.

Referring to fig. 5 and 6, in one embodiment, the protective cover 2 is cylindrical, the top of the protective cover 2 is connected with the edge of the force bearing plate 1 through fixing bolts, and the inner wall of the protective cover 2 is connected with at least part of the brackets 3 through fixing bolts. The periphery of the bracket 3 is also provided with a frame for an operator to climb. The utility model discloses leveling measuring force device sets up the protection casing in the outside that the support is close to bearing plate part, can protect and protect ball pivot guiding mechanism and support guiding mechanism. The frame 31 is arranged on the periphery of the support, so that an operator can conveniently climb in place and then adjust the operating rod, and further the lifting control of the screw sleeve is realized.

The embodiment of the utility model provides an in the vice spiral of supporting adjustment structure and the vice spiral of lift all possess the auto-lock ability, when upper portion load board received axial load, can not vertical slip, can guarantee the utility model discloses a leveling testing arrangement's operation security.

The above embodiments of the present invention can be combined with each other, and have corresponding technical effects.

The utility model discloses a leveling measuring force device adopts the modularized design, compact structure, and easy operation is reliable, can realize rocket levelness adjustment and gravity measurement after field rapid deployment, accomplishes levelness adjustment and gravity measurement demand before the rocket VTOL is experimental. The device not only can realize the leveling of the rocket in the supporting process, but also can measure the gravity of the rocket through the force measuring sensor, supports the rocket by utilizing a support adjusting mechanism arranged on the periphery of the force measuring sensor after the gravity measurement is finished, and then reduces the force measuring sensor by utilizing a lifter to separate a ball socket from a ball head, so that the display of the force measuring sensor is reset to zero, and the force measuring sensor is prevented from being damaged when the rocket is subjected to a static ignition test.

The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A leveling force measuring device is used for supporting a supporting leg of a rocket to be tested and is characterized by comprising a force bearing plate, a protective cover, a support, at least three supporting and adjusting mechanisms, a lifter, a force measuring sensor and a spherical hinge guide mechanism, wherein the lifter, the force measuring sensor and the spherical hinge guide mechanism are sequentially arranged on the central axis of the support from low to high;

the protective cover is connected with the bearing plate so as to wrap part of the support in the protective cover; each supporting and adjusting mechanism is uniformly distributed on the periphery of the spherical hinge guide mechanism, the bottom of each supporting and adjusting mechanism is arranged on the support, and the top of each supporting and adjusting mechanism is used for supporting the bearing plate;

the supporting and adjusting mechanism is heightened to support the force bearing plate, the lifter is driven to lower, and the ball socket and the ball head are separated to form a gap, so that a static ignition test is carried out on the rocket, and the force measuring sensor is protected.

2. The leveling force measuring device of claim 1, wherein the ball joint guide mechanism further comprises a ball cup, a ball collar, and a guide sleeve; one end of the ball head is connected with the bearing plate through the ball head seat, and the other end of the ball head is limited in the ball socket by the ball head ring;

the outer annular surface of the guide sleeve is fixedly arranged on the support, and the inner annular surface of the guide sleeve is abutted against the outer annular surface of the ball socket, so that the ball socket can slide along the guide sleeve under the driving of the elevator.

3. The leveling force measuring device of claim 2, wherein there is a spacing between the ball head ring and the ball head in a direction of movement of the ball head; therefore, in the static ignition test stage of the rocket, the ball head can be separated from the ball socket and then limited by the ball head ring.

4. The leveling force measuring device of claim 3, wherein an oilless bushing is arranged between the inner ring of the guide bushing and the ball socket, and a compression ring is arranged at the top of the oilless bushing;

the annular bottom in the uide bushing is equipped with and is used for supporting the brace table of oilless axle sleeve, the clamping ring will oilless axle sleeve compresses tightly the brace table.

5. The leveling force measuring device of claim 4, wherein six of the support adjustment mechanisms are disposed evenly along the periphery of the ball pivot guide mechanism.

6. The leveling force measuring device of any one of claims 1 to 5, wherein each of the support adjustment mechanisms comprises a screw support, a screw sleeve, a bolt and a nut provided to the bracket;

one side of the spiral sleeve is arranged in the spiral support in a threaded connection mode, and the other side of the spiral sleeve is used for supporting the bearing plate; the bolt sequentially penetrates through the bearing plate, the spiral support and the spiral sleeve and then is connected with the nut;

an operating rod is arranged on one side of the spiral sleeve close to the bearing plate; the operating rod is driven to enable the spiral sleeve to ascend or descend relative to the spiral support so as to support or separate the bearing plate.

7. The leveling force measuring device of claim 6, wherein the end of the screw sleeve for supporting the bearing plate is a ball head structure, and a ball socket cover matched with the ball head structure is further arranged between the ball head structure and the bearing plate; the screw sleeve stably supports the bearing plate through the ball socket cover.

8. The leveling force measuring device of claim 7, wherein an outer wall of a rod portion of the bolt is spaced from an inner wall of the screw sleeve to prevent the bolt from becoming jammed with the screw sleeve.

9. The leveling force measuring device of claim 8, wherein a washer is disposed between a bolt cap of the bolt and the messenger plate.

10. The leveling force measuring device of claim 9, wherein the washer comprises a spherical upper washer and a spherical bowl lower washer disposed in cooperation with each other.