CN220603718U - Capturing and positioning device for inspection quality - Google Patents

Abstract

The utility model relates to the technical field of space gravitational wave detection, and discloses a capturing and positioning device for a test mass, which comprises the test mass, two fixed electrode plates, a first capturing mechanism and a second capturing mechanism, wherein the test mass is positioned between the two fixed electrode plates, the first capturing mechanism and the second capturing mechanism are respectively arranged on the two fixed electrode plates, and the test mass is provided with a positioning groove; the first capturing mechanism and the second capturing mechanism comprise a mounting base, a driving device, a push rod, a position detecting device and a control device, wherein the mounting base is used for being connected with the fixed electrode plates, the driving device is connected to the mounting base, the push rod is connected with the driving device, the driving device is used for driving the push rod to move, the position detecting device is connected to the driving device, the position detecting device is used for detecting the position of the push rod, the control device is in communication connection with the position detecting device and the driving device, the inspection quality can be fixed between the two fixed electrode plates, and the capturing positioning precision is high.

Description

Capturing and positioning device for inspection quality

Technical Field

The utility model relates to the technical field of space gravitational wave detection, in particular to a capturing and positioning device for inspection quality.

Background

Gravitational wave detection has important significance in the fields of generalized relativity, astrophysics, astronomy and the like. The space gravitational wave detection refers to a method for constructing a large-scale laser interferometer by utilizing spacecraft formation or constellation in space to detect gravitational waves. The spacecraft for space gravitational wave detection mainly comprises an inertial sensor, an optical measurement system, a spacecraft platform and other systems. The basic principle of space gravitational wave detection is to ensure that the inspection quality follows the motion of the geodesic wire in the direction of the laser interferometer by using a non-dragging control technology, and to measure the optical path change between two inspection qualities in space caused by gravitational waves by using the laser interferometer.

The inertial sensor is one of the most important parts of the spatial gravitational wave detection device. The inertial sensor comprises an electrode housing and a proof mass, the proof mass is located in the electrode housing, the electrode housing comprises at least one pair of oppositely disposed fixed electrode plates, and the proof mass is located between the two fixed electrode plates. The state of the proof mass determines the working state of the inertial sensor, wherein the high-precision positioning and monitoring of the proof mass are of great importance. At present, the inertial sensor is installed on the ground, then is transmitted along with a satellite, and is measured after the satellite enters the orbit. However, during the transmitting phase, the position of the proof mass is easily shifted due to the movement of the satellite, which results in the problem that the proof mass is damaged or the initial position is inaccurate, and thus the result of gravitational wave detection is affected.

The prior art discloses a space gravitational wave detection device based on single inspection quality, which comprises three spacecrafts, wherein a spacecraft platform in each spacecraft comprises an inertial sensing component, a driving component and two optical components, the inertial sensing component comprises a polygonal columnar inspection quality, and the inspection quality comprises two groups of side surfaces with an included angle of 60 DEG in the normal direction and four side surfaces which are perpendicular to each other or parallel to each other and used for detecting displacement sensing and static feedback control; the optical component comprises a local interferometry unit and an inter-satellite long-arm interferometry unit, the local interferometry unit measures the relative displacement change of the spacecraft platform relative to the inspection mass, and a driving component in the local interferometry unit is controlled by a drag-free control algorithm to drive the spacecraft platform to move along with the inspection mass in an orbit plane; the inter-satellite long-arm interferometer measures the relative displacement change between the optical platforms in the two spacecrafts, thereby realizing the measurement of gravitational wave signals. The inertial sensor of this patent is installed on the ground, then transmitted with the satellite, and measured after the satellite is in orbit. However, during the transmitting phase, the position of the proof mass is easily shifted due to the movement of the satellite, which results in the problem that the proof mass is damaged or the initial position is inaccurate, and thus the result of gravitational wave detection is affected.

Disclosure of Invention

The utility model aims to provide a capturing and positioning device for a test mass, which can capture and release the test mass and has high capturing and positioning precision.

In order to achieve the above purpose, the utility model provides a capturing and positioning device for a test mass, which comprises the test mass, two fixed electrode plates, a first capturing mechanism and a second capturing mechanism, wherein the test mass is positioned between the two fixed electrode plates, the first capturing mechanism and the second capturing mechanism are respectively arranged on the two fixed electrode plates, and positioning grooves are respectively arranged on two sides of the test mass opposite to the two fixed electrode plates; the first capturing mechanism and the second capturing mechanism comprise a mounting base, a driving device, a push rod, a position detecting device and a control device, wherein the mounting base is used for being connected with a fixed electrode plate, the driving device is connected to the mounting base, the push rod is connected with the driving device, the driving device is used for driving the push rod to move, the position detecting device is connected to the driving device, the position detecting device is used for detecting the position of the push rod, and the control device is in communication connection with the position detecting device and the driving device.

As the preferred scheme, first catch mechanism with the second catch mechanism still all includes the top cap, the top cap includes a cap section of thick bamboo and a cap body, the cap body is located the one end of a cap section of thick bamboo, a cap section of thick bamboo cup joints on the ejector pin, the cap body is used for stretching into cooperate in the constant head tank of inspection quality, the cap body diameter is kept away from it the one end of ejector pin is towards being close to the one end of ejector pin reduces gradually.

Preferably, the top caps of the first capturing mechanism and the second capturing mechanism are different in structure, the cross section of the cap body of the top cap of the first capturing mechanism is polygonal, and the cross section of the cap body of the top cap of the second capturing mechanism is circular.

As the preferable scheme, the ejector rod comprises a main rod and a connecting rod which are connected, the diameter of the connecting rod is smaller than that of the end part of the main rod, the cap barrel is sleeved on the connecting rod, the end face, close to the connecting rod, of the main rod is provided with a slot, the cap barrel is provided with a cap edge lug, and the cap edge lug is in plug-in fit with the slot.

As a preferred scheme, the driving device is an inchworm linear motor, the driving device comprises a left clamping driving unit, a right clamping driving unit and a middle rotor, wherein the shell is arranged in the shell, the shell is connected with the mounting base, the middle rotor is positioned between the left clamping driving unit and the right clamping driving unit, the control device is respectively and electrically connected with the left clamping driving unit and the right clamping driving unit, the middle rotor is provided with a containing hole penetrating through two ends of the middle rotor, the ejector rod penetrates through the containing hole, and the ejector rod moves along with the middle rotor.

As a preferred scheme, the position detection device comprises a position detection base, a beam piece, a displacement strain gauge and a moving piece, wherein the position detection base is connected with the shell, the beam piece is arranged on the position detection base, the displacement strain gauge is arranged on the beam piece, the displacement strain gauge is connected with the control device, the moving piece comprises a first moving rod, a second moving rod and a third moving rod, the first moving rod and the second moving rod are vertically connected to two ends of the third moving rod, the moving piece is in a U-shaped structure, the third moving rod is connected with the intermediate mover, the moving piece moves together with the intermediate mover, and the third moving rod is parallel to the ejector rod; the beam piece is located between the first moving rod and the second moving rod.

As a preferable scheme, one end of the beam piece is connected with the position detection base, and the other end of the beam piece is suspended and positioned between the first moving rod and the second moving rod.

Preferably, the position detecting device further comprises a position sensor PSD and a light source, wherein the position sensor PSD is mounted on the third moving rod, the light source is mounted on the beam sheet, and the position sensor PSD is connected with the control device.

The force measuring device comprises a simple supporting beam, a beam cover plate, a first force measuring strain gauge and a second force measuring strain gauge, wherein the simple supporting beam comprises a first support, a second support and a third support, the first support is connected with the second support through the first supporting beam, the second support is connected with the third support through the second supporting beam, the first support, the first supporting beam, the second support, the second supporting beam and the third support are positioned on the same straight line, and the simple supporting beam is perpendicular to the ejector rod; the two sides of the middle rotor are provided with connecting plates, the first support and the third support are respectively connected with the connecting plates on two sides, the second support is provided with a through hole penetrating through two sides of the second support, one end of the ejector rod penetrates through the through hole and is connected with the beam cover plate, the beam cover plate is connected with the second support, the first supporting beam and the second supporting beam are respectively provided with a first force measuring strain gauge, the second force measuring strain gauge is arranged on the beam cover plate and is located on one side opposite to the second support, and the first force measuring strain gauge and the second force measuring strain gauge are connected with the control device.

As the preferred scheme, drive arrangement still includes the locating part, the locating part includes first limiting plate and second limiting plate, the one end of first limiting plate with the shell is connected, the second limiting plate is connected the other end of first limiting plate makes the locating part is L type mechanism, just the second limiting plate is located in the direction of movement of middle active cell, first limiting plate is located the shell is kept away from one side of proof mass.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the first capturing mechanism and the second capturing mechanism are respectively arranged on the two fixed electrode plates, the ejector rods of the first capturing mechanism and the second capturing mechanism are driven by the respective driving devices to move close to each other until the respective ejector rods are inserted into the positioning grooves on two sides of the inspection quality, so that the inspection quality is clamped, captured and fixed, the inspection quality can be fixed in a satellite launching stage, damage is prevented, the ejector rods of the first capturing mechanism and the second capturing mechanism can simultaneously move the same distance towards the direction close to the inspection quality, so that the inspection quality is fixed in the middle of the two fixed electrode plates, the position of the inspection quality when captured is known and accurate, the position detection device is arranged to detect the moving distance of the ejector rods, and is connected with the control device.

Drawings

FIG. 1 is a first perspective structural schematic view of a proof mass, a first capture mechanism and a second capture mechanism of an embodiment of the present utility model.

Fig. 2 is a schematic view of a second perspective structure of a proof mass, a first capture mechanism and a second capture mechanism according to an embodiment of the present utility model.

FIG. 3 is a schematic diagram of the structure of the proof mass of an embodiment of the present utility model.

Fig. 4 is a schematic structural view of the ejector pin according to the embodiment of the present utility model.

Fig. 5 is a schematic view of the structure of the top cap of the first capturing mechanism according to the embodiment of the present utility model.

Fig. 6 is a schematic view of the structure of the top cap of the second capturing mechanism according to the embodiment of the present utility model.

Fig. 7 is a schematic view of the structure of the first capturing mechanism or the second capturing mechanism according to the embodiment of the present utility model.

Fig. 8 is an exploded view of the first capture mechanism or the second capture mechanism of an embodiment of the present utility model.

Fig. 9 is a schematic structural view of a driving device according to an embodiment of the present utility model.

Fig. 10 is an exploded view of a driving device according to an embodiment of the present utility model.

Fig. 11 is an exploded view of a position detecting device according to an embodiment of the present utility model.

Fig. 12 is an exploded view of a force measuring device of an embodiment of the present utility model.

Fig. 13 is an exploded view of a mounting base of an embodiment of the present utility model.

In the figure, 100-proof mass; 110-positioning grooves; 200-a first capture mechanism; 300-a second capture mechanism; 400-mounting a base; 410-a first base; 420-a second base; 430-mounting holes; 500-driving means; 510-a housing; 520-left clamp drive unit; 530-a right clamp drive unit; 540-an intermediate mover; 550-limiting piece; 551-first limiting plate; 552-a second limiting plate; 560-connecting plates; 600-ejector rod; 610-a boom; 611-slot; 620-connecting rod; 700-position detection means; 710-a base for position detection; 720-beam sheet; 730-positioning the strain gage; 740-moving member; 741-a first movement rod; 742-a second movable bar; 743-a third movement bar; 750—position sensitive device PSD; 760-a light source; 800-top cap; 810-cap barrel; 820-cap; 830-cap rim tabs; 900-force measuring device; 910-simply supported beams; 911-first support; 912-a second mount; 913-a third mount; 914-first corbel; 915-a second corbel; 920-beam cover plate; 930-a first force-measuring strain gauge; 940-second force-measuring strain gauge.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

Example 1

As shown in fig. 1 to 13, a capture positioning apparatus for a proof mass 100 according to a preferred embodiment of the present utility model includes a proof mass 100, two fixed electrode plates, a first capture mechanism 200 and a second capture mechanism 300, the proof mass 100 being located between the two fixed electrode plates, the first capture mechanism 200 and the second capture mechanism 300 being respectively mounted on the two fixed electrode plates, as shown in fig. 1 and 2. The two sides of the inspection mass 100 opposite to the two fixed electrode plates are respectively provided with a positioning groove 110, as shown in fig. 3. The first capturing mechanism 200 and the second capturing mechanism 300 comprise a mounting base 400, a driving device 500, a top rod 600, a position detecting device 700 and a control device, wherein the mounting base 400 is used for being connected with a fixed electrode plate, the driving device 500 is connected to the mounting base 400, the top rod 600 is connected with the driving device 500, the driving device 500 is used for driving the top rod 600 to move, the position detecting device 700 is connected to the driving device 500, the position detecting device 700 is used for detecting the position of the top rod 600, and the control device is in communication connection with the position detecting device 700 and the driving device 500.

In this embodiment, the first capturing mechanism 200 and the second capturing mechanism 300 are respectively disposed on the two fixed electrode plates, the ejector pins 600 of the first capturing mechanism 200 and the second capturing mechanism 300 are moved close to each other under the driving of the respective driving devices 500 until the respective ejector pins 600 are inserted into the positioning slots 110 on both sides of the inspection quality 100, so as to clamp and fix the inspection quality 100, the inspection quality can be fixed in the satellite transmitting stage, damage is prevented, and the ejector pins 600 of the first capturing mechanism 200 and the second capturing mechanism 300 can be moved by the same distance in the direction approaching to the inspection quality 100 at the same time, so that the inspection quality 100 is fixed in the middle of the two fixed electrode plates, the position of the inspection quality 100 when captured is known and accurate, and the position detecting device 700 provided in this embodiment detects the moving distance of the ejector pins 600, and the position detecting device 700 is connected with the control device, after the ejector pins 600 are moved by the set distance, the position detecting device 700 detects the ejector pins 600 to be moved to the set positions, and transmits signals to the control device, and the control device controls the driving devices 500 to stop working, so that the movement of the inspection quality 100 is controlled to be in the direction approaching to the direction of the inspection quality 100, thereby ensuring that the movement of the inspection quality is accurate, and the captured position is guaranteed, and the capturing position is more accurate.

The control device of this embodiment adopts a single chip or a micro-processing chip.

Further, the first capturing mechanism 200 and the second capturing mechanism 300 of the present embodiment further include a top cap 800, the top cap 800 includes a cap barrel 810 and a cap body 820, the cap body 820 is disposed at one end of the cap barrel 810, the cap barrel 810 is sleeved on the ejector rod 600, the cap body 820 is used for extending into the positioning slot 110 of the inspection quality 100 to cooperate, and the diameter of the cap body 820 gradually decreases from one end far from the ejector rod 600 to one end close to the ejector rod 600. The positioning groove 110 of the inspection quality 100 is matched with the top cap 800, that is, the shape of the positioning groove 110 is the same as that of the cap 820, so that the top cap 800 and the positioning groove 110 can be embedded when the cap 820 is inserted into the positioning groove 110. The diameter of the cap 820 is gradually reduced, so that one end of the cap 820 which enters the positioning groove 110 is smaller, and the cap 820 is easier to extend into the positioning groove 110, thereby ensuring that the cap 820 can smoothly extend into the positioning groove 110.

In addition, the top cap 800 of the first capturing mechanism 200 and the second capturing mechanism 300 of the present embodiment are different in structure, and the cross section of the cap body 820 of the top cap 800 of the first capturing mechanism 200 is polygonal, as shown in fig. 5. The top cap 800 of the second capture mechanism 300 has a circular cross-section as shown in fig. 6. The use of a cap 820 having a polygonal cross-section prevents the proof mass 100 from rotating when captured. When the ejector pins 600 of the first and second trapping mechanisms 200 and 300 approach and move at the same speed for the same time, the offset proof mass 100 can be repositioned to be in the middle of the two fixed electrode plates, enabling posture adjustment of the proof mass 100. Specifically, the cap body 820 of the top cap 800 of the first capturing mechanism 200 of the present embodiment has a square cross section, so that the cap body 820 of the top cap 800 of the first capturing mechanism 200 is not pyramid-shaped.

In addition, as shown in fig. 4, the ejector rod 600 of the present embodiment includes a main rod 610 and a connecting rod 620 which are connected, the diameter of the connecting rod 620 is smaller than that of the end of the main rod 610, a cap barrel 810 is sleeved on the connecting rod 620, a slot 611 is disposed on the end surface of the main rod 610 near the connecting rod 620, a cap barrel 810 is provided with a cap edge tab 830, and the cap edge tab 830 is in plug-in fit with the slot 611. The top cap 800 is detachably coupled to the top rod 600, and when coupled, the connection rod 620 is inserted into the cap barrel 810, and the cap rim tab 830 is inserted into the slot 611, thereby fixing the top cap 800 to the top rod 600.

Example two

The present embodiment differs from the first embodiment in that the present embodiment further describes the driving device 500 and the position detecting device 700 on the basis of the first embodiment.

As shown in fig. 7 to 10, in the present embodiment, the driving device 500 is an inchworm linear motor, the driving device 500 includes a left clamping driving unit 520, a right clamping driving unit 530 and a middle mover 540, wherein the housing 510 is arranged in the housing 510, the housing 510 is connected with the mounting base 400, the middle mover 540 is positioned between the left clamping driving unit 520 and the right clamping driving unit 530, the control device is respectively electrically connected with the left clamping driving unit 520 and the right clamping driving unit 530, the middle mover 540 is provided with a receiving hole penetrating through two ends thereof, and the ejector rod 600 is arranged in the receiving hole in a penetrating manner, and moves together with the middle mover 540. The left clamp driving unit 520 and the right clamp driving unit 530 are cooperatively driven such that the intermediate mover 540 can perform up-and-down rectilinear motion. The left clamp driving unit 520 and the right clamp driving unit 530 are disposed at both sides of the middle mover 540 to perform power-off clamping and power-on driving functions.

As shown in fig. 11, the position detecting device 700 of the present embodiment includes a position detecting base 710, a beam piece 720, a displacement strain gauge 730 and a moving member 740, the position detecting base 710 is connected to the housing 510, the beam piece 720 is mounted on the position detecting base 710, the displacement strain gauge 730 is disposed on the beam piece 720, the displacement strain gauge 730 is connected to the control device, the moving member 740 includes a first moving rod 741, a second moving rod 742 and a third moving rod 743, the first moving rod 741 and the second moving rod 742 are vertically connected to both ends of the third moving rod 743, the moving member 740 is made into a U-shaped structure, the third moving rod 743 is connected to the intermediate mover 540, the moving member 740 moves together with the intermediate mover 540, and the third moving rod 743 is parallel to the jack 600; the beam plate 720 is located between the first moving lever 741 and the second moving lever 742.

The movements of the intermediate mover 540, the ejector rod 600 and the moving member 740 are identical, and when capturing, the intermediate mover 540 drives the ejector rod 600 to move closer to the proof mass 100, the moving member 740 moves together, and the first moving rod moves closer to the beam plate 720. When the first moving rod 741 contacts the beam plate 720, the beam plate 720 is deformed, and thus the displacement strain gauge 730 on the beam plate 720 is detected, the displacement strain gauge 730 sends a signal to the control device, the control device cuts off the power of the left clamping driving unit 520 and the right clamping driving unit 530, and the driving device 500 stops working. When released, the middle mover 540 moves in the opposite direction, driving the ejector rod 600 to retreat, and driving the moving member 740 to move together, and the second moving rod approaches the beam plate 720. When the second moving rod 742 contacts the beam plate 720, the beam plate 720 is deformed, and thus the displacement strain gauge 730 on the beam plate 720 is detected, the displacement strain gauge 730 sends a signal to the control device, the control device de-energizes the left clamping driving unit 520 and the right clamping driving unit 530, and the driving device 500 stops working.

Further, one end of the beam plate 720 is connected to the positioning base 710, and the other end of the beam plate 720 is suspended and located between the first moving rod 741 and the second moving rod 742. The beam plate 720 is more easily deformed, and the position detecting device 700 is more sensitive.

In addition, the position detecting device 700 of the present embodiment further includes a position sensor PSD750 and a light source 760, the position sensor PSD750 is mounted on the third moving rod 743, the light source 760 is mounted on the beam plate 720, and the position sensor PSD750 is connected to the control device. The position sensor PSD750 cooperates with the light source 760 to detect the distance of movement of the moveable member 740. The light source 760 employs an LED lamp. The position detection device 700 adopts two position detection modes, plays a double guarantee role, and has a compact structure.

Other structures of this embodiment are the same as those of the first embodiment, and will not be described here again.

Example III

The difference between this embodiment and the second embodiment is that, on the basis of the second embodiment, the positioning device force measurement device 900 is captured in this embodiment.

As shown in fig. 13, the force measuring device 900 includes a simply supported beam 910, a beam cover plate 920, a first force measuring strain gauge 930, and a second force measuring strain gauge 940, where the simply supported beam 910 includes a first support 911, a second support 912, and a third support 913, the first support 911 is connected to the second support 912 through the first support 914, the second support 912 is connected to the third support 913 through the second support 915, and the first support 911, the first support 914, the second support 912, the second support 915, and the third support 913 are positioned on the same straight line, and the simply supported beam 910 is perpendicular to the jack 600; the two sides of the middle rotor 540 are provided with connecting plates 560, the first support 911 and the third support 913 are respectively connected with the connecting plates 560 on the two sides through bolts, the second support 912 is provided with through holes penetrating through the two sides, one end of the ejector rod 600 penetrates through the through holes and is connected with the beam cover plate 920, the beam cover plate 920 is connected with the second support 912 through bolts, the first supporting beam 914 and the second supporting beam 915 are respectively provided with a first force measuring strain gauge 930, the second force measuring strain gauge 940 is arranged on the beam cover plate 920 and is positioned on one side opposite to the second support 912, and the first force measuring strain gauge 930 and the second force measuring strain gauge 940 are connected with a control device.

After the top caps 800 of the first capturing mechanism 200 and the second capturing mechanism 300 are respectively inserted into the positioning grooves 110 at two sides of the inspection mass 100, a reaction force is applied to the ejector rod 600, and the ejector rod 600 is connected with the beam cover plate 920, so that the beam cover plate 920 is connected with the second support 912, the second support 912 is stressed, and the second force-measuring strain gauge 940 detects and sends a signal to the control device; simultaneously, the first support beam 914 and the second support beam 915 are deformed, and the deformation is detected by the two first force-measuring strain gauges 930 and sent to the control device, so that the contact force generated by the contact of the ejector rod 600 with the inspection quality 100 is detected.

In addition, the driving device 500 of the embodiment further includes a limiting member 550, where the limiting member 550 includes a first limiting plate 551 and a second limiting plate 552, one end of the first limiting plate 551 is connected to the housing 510, the second limiting plate 552 is connected to the other end of the first limiting plate 551, so that the limiting member 550 is an L-shaped mechanism, and the second limiting plate 552 is located in the moving direction of the middle mover 540, and the first limiting plate 551 is located on one side of the housing 510 away from the proof mass 100. Upon release, the middle mover 540 moves in the opposite direction, and the second limiting plate 552 can limit the maximum distance that the middle mover 540 retreats.

In addition, as shown in fig. 13, the mounting base 400 includes a first base 410 and a second base 420, each of the first base 410 and the second base 420 is provided with a mounting hole 430 penetrating both of them, the first base 410 is used to be connected with the housing 510 of the driving device 500, the first base 410 is connected with the second base 420 by bolts, the second base 420 is connected with the fixed electrode plate by bolts, and the ejector rod 600 protrudes from the mounting holes 430 of the first base 410 and the second base 420.

Other structures of this embodiment are the same as those of the embodiment, and will not be described here again.

The working process of the utility model is as follows: (1) capturing: the control device controls the driving device 500 to be started, and the left clamping driving unit 520 and the right clamping driving unit 530 are electrified to drive the middle mover 540 to move toward the inspection mass 100, so that the ejector rod 600 and the moving member 740 fixed to the middle mover 540 move together with the middle mover 540. At this time, the first moving bar approaches the beam plate 720. When the first moving rod 741 contacts the beam plate 720, the beam plate 720 is deformed, and thus the displacement strain gauge 730 on the beam plate 720 is detected, the displacement strain gauge 730 sends signals to the control device, the control device cuts off the power of the left clamping driving unit 520 and the right clamping driving unit 530, the driving device 500 stops working, and at this time, the top cap 800 stretches into the positioning groove 110 of the inspection quality 100, and the capturing is completed. After the top caps 800 of the first capturing mechanism 200 and the second capturing mechanism 300 are respectively inserted into the positioning grooves 110 at two sides of the inspection mass 100, a reaction force is applied to the ejector rod 600, and the ejector rod 600 is connected with the beam cover plate 920, so that the beam cover plate 920 is connected with the second support 912, the second support 912 is stressed, and the second force-measuring strain gauge 940 detects and sends a signal to the control device; simultaneously, the first support beam 914 and the second support beam 915 are deformed, and the deformation is detected by the two first force-measuring strain gauges 930 and sent to the control device, so that the contact force generated by the contact of the ejector rod 600 with the inspection quality 100 is detected. In addition, the moving distance of the ejector pins 600 of the first capturing mechanism 200 and the second capturing mechanism 300 can be adjusted, and thus the position of the proof mass 100 can be adjusted.

(2) Releasing: the control device controls the driving device 500 to start, the left clamping driving unit 520 and the right clamping driving unit 530 are electrified, the middle mover 540 is driven to move away from the inspection mass 100, the ejector rod 600 is driven to retreat, the top cap 800 retreats from the positioning groove 110 of the inspection mass 100, the middle mover 540 moves to further drive the moving member 740 to move together, and the second moving rod is close to the cross beam piece 720. When the second moving rod 742 contacts the beam plate 720, the beam plate 720 is deformed, and thus the displacement strain gauge 730 on the beam plate 720 is detected, the displacement strain gauge 730 sends signals to the control device, the control device cuts off the power of the left clamping driving unit 520 and the right clamping driving unit 530, and the driving device 500 stops working, so that release is realized.

In summary, the embodiment of the present utility model provides a capturing and positioning device, which is configured such that, by respectively setting the first capturing mechanism 200 and the second capturing mechanism 300 on two fixed electrode plates, the ejector pins 600 of the first capturing mechanism 200 and the second capturing mechanism 300 are moved close to each other under the driving of the respective driving devices 500 until the respective ejector pins 600 are inserted into the positioning slots 110 on both sides of the inspection quality 100, so as to clamp and fix the inspection quality 100, and in the satellite transmitting stage, the inspection quality can be fixed, and damage is prevented, and the ejector pins 600 of the first capturing mechanism 200 and the second capturing mechanism 300 can be moved by the same distance in the direction approaching to the inspection quality 100, so that the inspection quality 100 is fixed in the middle of the two fixed electrode plates, so that the position of the inspection quality 100 when captured is known and accurate, and the position detecting device 700 is set to detect the moving distance of the ejector pins 600, and when the ejector pins 600 are moved by the set distances, the position detecting device 700 is connected to the control device, and after the movement of the ejector pins 600 is set to the set positions, signals are transmitted to the control device, and the control device controls the driving devices to stop the movement of the driving devices, so that the movement of the inspection quality 100 is prevented, and the capturing accuracy is guaranteed.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.

Claims (10)

1. The capturing and positioning device for the inspection quality (100) comprises the inspection quality (100) and two fixed electrode plates, wherein the inspection quality (100) is positioned between the two fixed electrode plates, and is characterized by comprising a first capturing mechanism (200) and a second capturing mechanism (300), the first capturing mechanism (200) and the second capturing mechanism (300) are respectively arranged on the two fixed electrode plates, and positioning grooves (110) are respectively formed in two sides, opposite to the two fixed electrode plates, of the inspection quality (100);

the first capturing mechanism (200) and the second capturing mechanism (300) comprise a mounting base (400), a driving device (500), a push rod (600), a position detecting device (700) and a control device,

the mounting base (400) is used for being connected with a fixed electrode plate, the driving device (500) is connected to the mounting base (400), the ejector rod (600) is connected with the driving device (500), the driving device (500) is used for driving the ejector rod (600) to move, the position detection device (700) is connected to the driving device (500), the position detection device (700) is used for detecting the position of the ejector rod (600), and the control device is in communication connection with the position detection device (700) and the driving device (500).

2. The capturing and positioning device of a proof mass (100) according to claim 1, wherein the first capturing mechanism (200) and the second capturing mechanism (300) further comprise a top cap (800), the top cap (800) comprises a cap barrel (810) and a cap body (820), the cap body (820) is arranged at one end of the cap barrel (810), the cap barrel (810) is sleeved on the ejector rod (600), the cap body (820) is used for being matched in the positioning groove (110) of the proof mass (100), and the diameter of the cap body (820) gradually decreases from one end of the cap body, which is far away from the ejector rod (600), to one end, which is close to the ejector rod (600).

3. The capture positioning apparatus of a proof mass (100) of claim 2, wherein the structures of the top caps (800) of the first capture mechanism (200) and the second capture mechanism (300) are different, the cross section of the cap body (820) of the top cap (800) of the first capture mechanism (200) is polygonal, and the cross section of the cap body (820) of the top cap (800) of the second capture mechanism (300) is circular.

4. The capturing and positioning device of a proof mass (100) according to claim 2, wherein the ejector rod (600) comprises a main rod (610) and a connecting rod (620) which are connected, the diameter of the connecting rod (620) is smaller than the end diameter of the main rod (610), the cap barrel (810) is sleeved on the connecting rod (620), a slot (611) is arranged on the end surface of the main rod (610) close to the connecting rod (620), a cap edge lug (830) is arranged on the cap barrel (810), and the cap edge lug (830) is in plug-in fit with the slot (611).

5. The capturing and positioning device of a proof mass (100) according to claim 1, wherein the driving device (500) is an inchworm linear motor, the driving device (500) comprises a left clamping driving unit (520), a right clamping driving unit (530) and an intermediate mover (540) which are arranged in the housing (510), the housing (510) is connected with the mounting base (400), the intermediate mover (540) is arranged between the left clamping driving unit (520) and the right clamping driving unit (530), the control device is respectively electrically connected with the left clamping driving unit (520) and the right clamping driving unit (530), the intermediate mover (540) is provided with a containing hole penetrating through two ends of the intermediate mover, the ejector rod (600) is arranged in the containing hole in a penetrating manner, and the ejector rod (600) moves along with the intermediate mover (540).

6. The capturing and positioning device of a proof mass (100) according to claim 5, wherein the position detection device (700) comprises a position detection base (710), a beam piece (720), a displacement strain gauge (730) and a moving member (740), the position detection base (710) is connected with the housing (510), the beam piece (720) is mounted on the position detection base (710), the displacement strain gauge (730) is arranged on the beam piece (720), the displacement strain gauge (730) is connected with the control device, the moving member (740) comprises a first moving rod (741), a second moving rod (742) and a third moving rod (743), the first moving rod (741) and the second moving rod (742) are vertically connected at two ends of the third moving rod (743), the moving member (740) is in a U-shaped structure, the third moving rod (743) is connected with the intermediate mover (540), and the intermediate mover (740) moves together with the third moving rod (743) and the third ejector rod (600); the beam piece (720) is located between the first moving lever (741) and the second moving lever (742).

7. The capture and positioning apparatus of a proof mass (100) of claim 6, wherein one end of the beam piece (720) is connected to the displacement base (710), and the other end of the beam piece (720) is suspended and positioned between the first displacement rod (741) and the second displacement rod (742).

8. The capture and localization apparatus of a proof mass (100) of claim 6 wherein the position detection apparatus (700) further comprises a position sensor PSD (750) and a light source (760), the position sensor PSD (750) being mounted on the third movable bar (743), the light source (760) being mounted on the beam sheet (720), the position sensor PSD (750) being connected to the control apparatus.

9. The capture and positioning device of a proof mass (100) of claim 5, further comprising a force measurement device (900), the force measurement device (900) comprising a simply supported beam (910), a beam cover plate (920), a first force-measuring strain gauge (930) and a second force-measuring strain gauge (940), the simply supported beam (910) comprising a first support (911), a second support (912) and a third support (913), the first support (911) being connected to the second support (912) by a first support (914), the second support (912) being connected to the third support (913) by a second support (915), the first support (911), the first support (914), the second support (912), the second support (915) and the third support (913) being on the same line, the simply supported beam (910) being perpendicular to the ejector pins (600);

the two sides of the middle rotor (540) are provided with connecting plates (560), the first support (911) and the third support (913) are respectively connected with the connecting plates (560) at the two sides, the second support (912) is provided with through holes penetrating through the two sides of the second support, one end of the ejector rod (600) penetrates through the through holes and is connected with the beam cover plate (920), the beam cover plate (920) is connected with the second support (912),

the first support beams (914) and the second support beams (915) are respectively provided with a first force measuring strain gauge (930), the second force measuring strain gauge (940) is arranged on the beam cover plate (920) and is positioned on one side opposite to the second support (912), and the first force measuring strain gauge (930) and the second force measuring strain gauge (940) are connected with the control device.

10. The capturing and positioning device of a proof mass (100) according to claim 5, wherein the driving device (500) further comprises a limiting member (550), the limiting member (550) comprises a first limiting plate (551) and a second limiting plate (552), one end of the first limiting plate (551) is connected with the housing (510), the second limiting plate (552) is connected with the other end of the first limiting plate (551), the limiting member (550) is made to be an L-shaped mechanism, the second limiting plate (552) is located in the moving direction of the middle mover (540), and the first limiting plate (551) is located on one side of the housing (510) away from the proof mass (100).