Inertia test device

Abstract

An inertia test device disclosed by the present invention comprises a mounting seat, an inertia plate, a rack, a gear and an inertia column, the mounting seat is suitable for mounting an actuator, the actuator can reciprocate along a first direction relative to the mounting seat, the inertia plate is arranged on the mounting seat and is connected with the actuator, and the rack is arranged on the mounting seat. The inertia plate can reciprocate along with the actuator in the first direction and generate inertia, the rack is arranged on the inertia plate and extends in the first direction, the rack can move along with the inertia plate in the first direction, the gear is arranged on the rack and matched with the rack, and the rack moves in the first direction to drive the gear to rotate in the second direction. The second direction is orthogonal to the first direction, the inertia column is arranged on the mounting base and detachably connected with the gear, and the inertia column can rotate around the second direction along with the gear and generate inertia. The inertia test device provided by the embodiment of the invention has the advantages of adjustable counterweight, compact structure and low cost.

Description

Technical Field

[0001] The present invention relates to the technical field of aerospace servo actuators, and in particular to an inertia test device. Background Art

[0002] The servo actuator is an actuator in the electro-hydraulic servo system. It controls the speed, direction, displacement and force of the load by applying controllable push and pull forces to the load. In the selection and commissioning of the servo actuator, it is necessary to set up a test bench to perform inertia tests on the servo actuator.

[0003] In the related art, when performing inertia tests on servo actuators, the method is often to directly add inertia counterweights or directly design the test bench into a large inertia structure. However, directly adding inertia counterweights makes it impossible to adjust the size of inertia as needed. Directly designing the test bench into a large inertia structure will make the equipment bulky, occupy a large test space, and have high production costs. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present invention provides an inertia test device, which has the advantages of adjustable counterweight, compact structure and low cost.

[0005] An inertia testing device according to an embodiment of the present invention comprises:

[0006] A mounting seat, the mounting seat being suitable for mounting an actuator, the actuator being capable of reciprocating along a first direction relative to the mounting seat;

[0007] An inertia plate, the inertia plate being arranged on the mounting seat and connected to the actuator, the inertia plate being capable of reciprocating along the first direction with the actuator and generating inertia;

[0008] A rack, the rack being disposed on the inertia plate and extending along the first direction, and the rack being movable along the inertia plate along the first direction;

[0009] A gear and an inertia column, wherein the gear is arranged on the rack and meshes with the rack, the rack moves along the first direction to drive the gear to rotate around a second direction, and the second direction is orthogonal to the first direction, and the inertia column is arranged on the mounting seat and is detachably connected to the gear, and the inertia column can rotate around the second direction with the gear and generate inertia.

[0010] In an inertia testing device according to an embodiment of the present invention, an actuator drives an inertia plate to perform reciprocating motion to drive a rack to perform reciprocating motion in a first direction; the movement of the rack can drive the gear to rotate around a second direction, thereby driving the inertia column to rotate around the second direction; the gear is detachably connected to the inertia column; the movement of the counterweight of the inertia plate and the inertia column is controlled by installing and removing the gear, thereby controlling the generated inertia, thereby achieving adjustment of the inertia according to needs in a simple manner; and, compared with the prior art, the inertia testing device is smaller in size, thus saving test space and cost.

[0011] In some embodiments, there are multiple inertia columns, and the multiple inertia columns are arranged on the mounting base at intervals along the first direction. The inertia column can rotate around the second direction relative to the mounting base. There are multiple gears, and each gear is arranged at intervals along the first direction and corresponds one-to-one to each inertia column.

[0012] In some embodiments, the inertia plate extends in the up-down direction, the up-down direction, the second direction and the first direction are orthogonal to each other, the rack is provided at the upper end of the inertia plate and the lower end of the inertia plate, and a plurality of the gears and a plurality of the inertia columns are provided above the inertia plate and below the inertia plate.

[0013] In some embodiments, a dimension of the rack in the first direction is greater than a dimension of an end portion of the inertia plate in the first direction, and both ends of the rack extend out of the end portion of the inertia plate.

[0014] In some embodiments, the mounting seat has a mounting chamber, the inertia plate is disposed in the mounting chamber, and a portion of an upper end of the inertia plate extends out of a top surface of the mounting seat.

[0015] In some embodiments, the inertia testing device also includes an elastic component, which includes a first elastic member and a second elastic member, the first elastic member and the second elastic member are respectively arranged on both sides of the inertia plate and both extend along the first direction, and the inertia plate can compress the first elastic member or the second elastic member when moving along the first direction.

[0016] In some embodiments, the inertia testing device further includes a bearing seat and a bearing, wherein the bearing seat is disposed on the mounting seat for mounting the inertia column, and the bearing is disposed between the inertia column and the bearing seat.

[0017] In some embodiments, the inertia testing device also includes a first connecting seat and a second connecting seat, the first connecting seat is arranged on the mounting seat, the second connecting seat is arranged on the inertia plate, the first connecting seat and the second connecting seat are arranged opposite to each other, one end of the actuator is installed on the first connecting seat, and the other end of the actuator is installed on the second connecting seat.

[0018] In some embodiments, the first connecting seat includes a connecting plate and a connecting member, the connecting plate is arranged on the mounting seat, and the connecting member is arranged on a side surface of the connecting plate away from the mounting seat and connected to one end of the actuator.

[0019] In some embodiments, the inertia plate includes a first section, a connecting section, and a second section connected in sequence from top to bottom, the cross-sectional area of ​​the first section gradually decreases from top to bottom, the cross-sectional area of ​​the second section gradually decreases from bottom to top, the cross-sectional area of ​​the lower end of the first section is the same as the cross-sectional area of ​​the lower end of the second section, and the cross-sectional area of ​​the connecting section is the same as the cross-sectional area of ​​the lower end of the first section. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a side view of an inertia testing device according to an embodiment of the present invention.

[0021] Figure 2 yes Figure 1 Schematic diagram of the QQ section.

[0022] Figure 3 It is a front view of an inertia testing device according to an embodiment of the present invention.

[0023] Figure 4 It is a schematic diagram of installing an inertia column of an inertia testing device according to an embodiment of the present invention.

[0024] Figure 5 yes Figure 4 Schematic diagram of the NN section.

[0025] Figure 6 It is a schematic diagram of a first connecting socket of an inertia testing device according to an embodiment of the present invention.

[0026] Figure 7 It is a schematic diagram of a connecting plate of a first connecting socket of an inertia testing device according to an embodiment of the present invention.

[0027] Figure numerals: 1. mounting seat; 11. mounting chamber; 12. opening; 13. reinforcing rib; 2. inertia plate; 21. first section; 22. connecting section; 23. second section; 3. rack; 4. gear; 5. inertia column; 6. elastic component; 61. first elastic member; 62. second elastic member; 71. bearing seat; 711. first support; 712. second support; 713. through hole; 72. bearing; 8. first connecting seat; 81. connecting plate; 82. connecting member; 9. actuator. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0029] like Figure 1-Figure 7 As shown, an inertia test device according to an embodiment of the present invention comprises a mounting seat 1, an inertia plate 2, a rack 3, a gear 4 and an inertia column 5. The mounting seat 1 has a mounting chamber 11, the top surface of the mounting chamber 11 has an opening 12, the actuator 9 is mounted in the mounting chamber 11 and can reciprocate along a first direction relative to the mounting seat 1. The inertia plate 2 is arranged in the mounting chamber 11 and is connected to the actuator 9, and the inertia plate 2 can reciprocate along the first direction with the actuator 9 and generate inertia.

[0030] The rack 3 is arranged on the inertia plate 2 and extends in the first direction. The rack 3 can move in the first direction along with the inertia plate 2. The gear 4 is arranged on the rack 3 and meshes with the rack 3. The rack 3 moves in the first direction to drive the gear 4 to rotate in the second direction. The second direction is orthogonal to the first direction. The inertia column 5 is arranged on the mounting seat 1 and is detachably connected to the gear 4. The inertia column 5 can rotate in the second direction along with the gear 4 and generate inertia.

[0031] In the inertia test device of the embodiment of the present invention, the actuator 9 drives the rack 3 to reciprocate in the first direction by pushing the inertia plate 2 to make reciprocating motion, and the movement of the rack 3 can drive the gear 4 to rotate around the second direction, thereby driving the inertia column 5 to rotate around the second direction. The gear 4 is detachably connected to the inertia column 5. The movement of the counterweight of the inertia plate 2 and the inertia column 5 is controlled by installing and removing the gear 4, thereby controlling the generated inertia, and realizing the adjustment of the inertia according to the needs, and the adjustment is realized by disassembling the gear 4, the adjustment method is simple, and the operation is convenient. Compared with the prior art, the inertia test device is smaller in size, saves the test space, and saves the cost.

[0032] In some embodiments, reinforcing ribs 13 are provided on the outer circumference of the mounting base 1 to improve the structural strength of the mounting base 1 .

[0033] In some embodiments, there are multiple inertia columns 5, which are arranged on the mounting seat 1 at intervals along the first direction, and the inertia columns 5 can rotate around the second direction relative to the mounting seat 1. There are multiple gears 4, and each gear 4 is arranged at intervals along the first direction and corresponds to each inertia column 5. For example, the number of inertia columns 5 is 4, and the number of gears 4 is 4. The number of inertia columns 5 and gears 4 can be set according to actual conditions, and this embodiment of the application does not limit this.

[0034] Specifically, the arrangement of multiple inertia columns 5 and multiple gears 4 increases the range of counterweight selection when the actuator 9 is subjected to an inertia test, thereby increasing the inertia adjustment range of the inertia test device and improving the applicability of the inertia test device. The number of inertia columns 5 connected to the inertia plate 2 is adjusted by the gear 4 to adjust the inertia required for the actuator 9 during the test, and the operation process is simple and convenient. Moreover, multiple inertia columns 5 are arranged on the mounting seat 1, and the structure of the inertia test device is compact.

[0035] In some embodiments, the inertia plate 2 extends in the up-down direction, the up-down direction, the second direction and the first direction are orthogonal to each other, a rack 3 is provided at the upper end of the inertia plate 2 and the lower end of the inertia plate 2, and a plurality of gears 4 and a plurality of inertia columns 5 are provided above the inertia plate 2 and below the inertia plate 2. Specifically, the range of counterweight selection when the actuator 9 is subjected to an inertia test is further increased, the inertia adjustment range of the inertia test device is increased, and the applicability of the inertia test device is improved.

[0036] In some embodiments, two racks 3 are respectively provided at the upper end of the inertia plate 2 and the lower end of the inertia plate 2, and the two racks 3 are spaced apart along the second direction, the inertia column 5 is located between the two racks 3, and gears 4 are installed at both ends of the inertia column 5, and the inertia column 5 is connected to the racks 3 through the gears 4. Specifically, the inertia column 5 and the gear 4 are connected by a keyway.

[0037] Specifically, there are eight inertia columns 5, which are divided into two groups. The two groups of inertia columns 5 are respectively arranged at the upper end and the lower end of the inertia plate 2, and each group includes four inertia columns 5. The four inertia columns 5 arranged at the upper end of the inertia plate 2 are evenly arranged along the first direction, and the four inertia columns 5 arranged at the lower end of the inertia plate 2 are also evenly arranged along the first direction, and the four inertia columns 5 arranged at the upper end of the inertia plate 2 correspond to the four inertia columns arranged at the lower end of the inertia plate 2 one by one.

[0038] It can be understood that the more inertia columns 5 there are, the greater the inertia of the load on the actuator 9. The larger the radius of the gear 4, the greater the distance between the central axis of the inertia column 5 and the end face of the inertia plate 2, which is equivalent to the greater the force arm of the gear 4 driving the inertia column 5 to rotate, and the smaller the inertia of the inertia column 5 of the same size during the load test. Conversely, the smaller the radius of the gear 4, the smaller the distance between the central axis of the inertia column 5 and the end face of the inertia plate 2, which is equivalent to the smaller the force arm of the gear 4 driving the inertia column 5 to rotate, and the larger the inertia of the inertia column 5 of the same size during the load test.

[0039] In some embodiments, the dimension of the rack 3 in the first direction is larger than the dimension of the end of the inertia plate 2 in the first direction, and both ends of the rack 3 extend out of the end of the inertia plate 2, so that when the inertia plate 2 reciprocates along the first direction under the action of the actuator 9, the gear 4 is not easy to detach from the rack 3, thereby ensuring the safety of the inertia test device when in use.

[0040] In some embodiments, a portion of the upper end of the inertia plate 2 extends out of the top surface of the mounting base 1 through the opening 12 , so that the number of inertia columns 5 on the upper end of the inertia plate 2 can be adjusted more conveniently.

[0041] In some embodiments, the inertia testing device also includes an elastic component 6, which includes a first elastic member 61 and a second elastic member 62. The first elastic member 61 and the second elastic member 62 are respectively arranged on both sides of the inertia plate 2 and both extend along the first direction. When the inertia plate 2 moves along the first direction, the first elastic member 61 or the second elastic member 62 can be compressed.

[0042] Specifically, the first elastic member 61 is located on the left side of the inertia plate 2, and the second elastic member 62 is located on the right side of the inertia plate 2. When the actuator 9 pushes the inertia plate 2 to move to the left, the first elastic member 61 is compressed, and when the actuator 9 pulls the inertia plate 2 to move to the right, the second elastic member 62 is compressed. Thus, the force of the actuator 9 is tested by the compression of the elastic component 6.

[0043] Specifically, the first elastic member 61 and the second elastic member 62 are both springs.

[0044] In some embodiments, the inertia testing device further includes a bearing seat 71 and a bearing 72 . The bearing seat 71 is disposed on the mounting seat 1 for mounting the inertia column 5 , and the bearing 72 is disposed between the inertia column 5 and the bearing seat 71 .

[0045] Specifically, the top surface of the mounting seat 1 and the inner bottom surface of the mounting chamber 11 are both provided with bearing seats 71, and the bearing seats 71 provided on the top surface of the mounting seat 1 and the bearing seats 71 provided in the mounting chamber 11 are arranged correspondingly. The bearing 72 is a cylindrical ball bearing.

[0046] The bearing seat 71 includes a first support 711 and a second support 712, which are arranged at intervals along the second direction. A plurality of through holes 713 are provided on the first support 711 and the second support 712, and the plurality of through holes 713 on the first support 711 and the plurality of through holes 713 on the second support 712 correspond to each other. The inertia column 5 is provided between the first support 711 and the second support 712, and one end of the inertia column 5 passes through the through hole 713 on the first support 711, and the other end of the inertia column 5 passes through the through hole 713 on the second support 712. The bearing 72 is provided in the through hole 713, so that the inertia column 5 can rotate around the second direction relative to the first support 711 and the second support 712.

[0047] Specifically, the bearing seat 71 is mounted on the top surface of the mounting seat 1 , and the opening 12 is located between the first support 711 and the second support 712 .

[0048] In some embodiments, the inertia testing device also includes a first connecting seat 8 and a second connecting seat (not shown), the first connecting seat 8 is arranged on the mounting seat 1, the second connecting seat is arranged on the inertia plate 2, the first connecting seat 8 and the second connecting seat are arranged opposite to each other, one end of the actuator 9 is installed on the first connecting seat 8, and the other end of the actuator 9 is installed on the second connecting seat.

[0049] Specifically, the first connection seat 8 has the same structure as the second connection seat, and the first connection seat 8 is used as an example for description. The first connection seat 8 includes a connection plate 81 and a connection member 82, wherein the connection plate 81 is arranged on the mounting seat 1, and the connection member 82 is arranged on a side surface of the connection plate 81 away from the mounting seat 1 and connected to one end of the actuator 9.

[0050] Specifically, the connecting plate 81 is a flange, the connecting plate 81 is connected to the inner wall of the installation chamber 11 by bolts, the connecting member 82 has a mounting hole, and the actuator 9 is bolted to the connecting member 82 through the mounting hole. The first connecting seat 8 has a simple structure, is easy to install, and has low cost.

[0051] In some embodiments, the inertia plate 2 includes a first section 21, a connecting section 22, and a second section 23 connected in sequence from top to bottom, the cross-sectional area of ​​the first section 21 gradually decreases from top to bottom, the cross-sectional area of ​​the second section 23 gradually decreases from bottom to top, the cross-sectional area of ​​the lower end of the first section 21 is the same as the cross-sectional area of ​​the lower end of the second section 23, and the cross-sectional area of ​​the connecting section 22 is the same as the cross-sectional area of ​​the lower end of the first section 21.

[0052] Specifically, there are two first sections 21, and the two first sections 21 are arranged at the upper end of the connecting section 22 and are arranged at intervals along the second direction. There are two second sections 23, and the two second sections 23 are arranged at the lower end of the connecting section 22 and are arranged at intervals along the second direction. The connecting section 22 is rectangular, and the two first sections 21 and the two second sections 23 are respectively arranged at the four corners of the connecting section 22. The first elastic member 61 is arranged on the left side of the connecting section 22, and the second elastic member 62 is arranged on the right side of the connecting section 22. The inertia plate 2 has a simple structure, is easy to manufacture, and saves costs.

[0053] The rack 3 disposed at the upper end of the inertia plate 2 is located at the upper end of the first section 21 and extends along the first direction, and the rack 3 disposed at the lower end of the inertia plate 2 is located at the lower end of the second section 23 and extends along the first direction.

[0054] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0059] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. An inertia testing device, characterized in that: include: A mounting seat (1), the mounting seat (1) being suitable for mounting an actuator (9), the actuator (9) being capable of reciprocating along a first direction relative to the mounting seat (1); an inertia plate (2), the inertia plate (2) being arranged on the mounting seat (1) and connected to the actuator (9), the inertia plate (2) being capable of reciprocating along the first direction with the actuator (9) and generating inertia; a rack (3), the rack (3) being arranged on the inertia plate (2) and extending along the first direction, the rack (3) being capable of moving along the first direction with the inertia plate (2); A gear (4) and an inertia column (5), wherein the gear (4) is arranged on the rack (3) and meshes with the rack (3), the rack (3) moves along the first direction to drive the gear (4) to rotate around a second direction, the second direction being orthogonal to the first direction, the inertia column (5) is arranged on the mounting seat (1) and is detachably connected to the gear (4), and the inertia column (5) can rotate around the second direction along with the gear (4) and generate inertia.

2. An inertia test device according to claim 1, characterized in that: There are a plurality of inertia columns (5), which are arranged at intervals on the mounting seat (1) along the first direction; the inertia columns (5) are rotatable about the second direction relative to the mounting seat (1); there are a plurality of gears (4), each of which is arranged at intervals along the first direction and corresponds one-to-one to each of the inertia columns (5).

3. An inertia testing device according to claim 2, characterized in that: The inertia plate (2) extends in an up-down direction, the up-down direction, the second direction and the first direction are orthogonal to each other, the upper end of the inertia plate (2) and the lower end of the inertia plate (2) are both provided with the rack (3), and the upper part of the inertia plate (2) and the lower part of the inertia plate (2) are each provided with a plurality of the gears (4) and a plurality of the inertia columns (5).

4. The inertia testing device according to claim 1, characterized in that: The dimension of the rack (3) in the first direction is greater than the dimension of the end of the inertia plate (2) in the first direction, and both ends of the rack (3) extend beyond the end of the inertia plate (2).

5. The inertia testing device according to claim 3, characterized in that: The mounting seat (1) has a mounting chamber (11), the inertia plate (2) is arranged in the mounting chamber (11), and a portion of the upper end of the inertia plate (2) protrudes from the top surface of the mounting seat (1).

6. An inertia testing device according to claim 5, characterized in that: The invention also comprises an elastic component (6), wherein the elastic component (6) comprises a first elastic member (61) and a second elastic member (62), wherein the first elastic member (61) and the second elastic member (62) are respectively arranged on both sides of the inertia plate (2) and both extend along the first direction, and when the inertia plate (2) moves along the first direction, the first elastic member (61) or the second elastic member (62) can be compressed.

7. An inertia testing device according to claim 1, characterized in that: It also comprises a bearing (72) seat (71) and a bearing (72), wherein the bearing (72) seat (71) is arranged on the mounting seat (1) for mounting the inertia column (5), and the bearing (72) is arranged between the inertia column (5) and the bearing (72) seat (71).

8. An inertia testing device according to claim 1, characterized in that: The actuator (9) further comprises a first connecting seat (8) and a second connecting seat, wherein the first connecting seat (8) is arranged on the mounting seat (1), and the second connecting seat is arranged on the inertia plate (2), the first connecting seat (8) and the second connecting seat are arranged opposite to each other, one end of the actuator (9) is mounted on the first connecting seat (8), and the other end of the actuator (9) is mounted on the second connecting seat.

9. An inertia testing device according to claim 8, characterized in that: The first connecting seat (8) comprises a connecting plate (81) and a connecting member (82), wherein the connecting plate (81) is arranged on the mounting seat (1), and the connecting member (82) is arranged on a side surface of the connecting plate (81) facing away from the mounting seat (1) and is connected to one end of the actuator (9).

10. An inertia testing device according to claim 1, characterized in that: The inertia plate (2) comprises a first section (21), a connecting section (22) and a second section (23) which are sequentially connected from top to bottom, the cross-sectional area of ​​the first section (21) gradually decreases from top to bottom, the cross-sectional area of ​​the second section (23) gradually decreases from bottom to top, the cross-sectional area of ​​the lower end of the first section (21) is the same as the cross-sectional area of ​​the lower end of the second section (23), and the cross-sectional area of ​​the connecting section (22) is the same as the cross-sectional area of ​​the lower end of the first section (21).

Images