Single-degree-of-freedom self-locking turnover device for testing incubator

Abstract

The invention discloses a single-degree-of-freedom self-locking turnover device for testing an incubator. The single-degree-of-freedom self-locking turnover device is composed of a device support (1), a turnover mechanism (2) and a driving module (3). The device support (1) assembly comprises a bearing support base (4), a profile (5), a spring ejector rod (6), a support side fence (7), a driven roller (8), a buffer block (9) and a locking screw (10). The driving module (3) comprises a first linear module (15), a second linear module (16), a driving lead screw (17), a driving expansion port (18), a hand wheel (19), a supporting plate push wheel (20) and a sliding rail supporting table (21). According to the invention, 90-degree temperature box test posture range adjustment of a spaceflight product from a vertical posture to a horizontal posture can be realized, in any temperature box test posture, the designed driving lead screw meets a self-locking condition, and the axial displacement of the lead screw can be kept without other locking mechanisms, so that the state of the overturning table is kept unchanged in the temperature box test process.

Description

Technical Field

[0001] This invention belongs to the field of flipping device design, and in particular a single-degree-of-freedom self-locking flipping device for temperature chamber testing. Background Technology

[0002] High and low temperature test chambers are temperature chamber testing equipment whose function is to simulate high and low temperature environments to test products. They are a crucial part of the aerospace product testing process, used to evaluate the performance indicators and operational stability of the entire machine under different temperature conditions. To comprehensively test the overall performance, the temperature chamber testing process involves not only testing the product in its upright position but also rotating it to conduct temperature chamber tests in different positions, such as tilted and horizontal positions. Previously, after completing a test in one position, the product temperature was allowed to recover to an acceptable range before manually changing to other position fixtures for the next temperature chamber test.

[0003] The problems that arise in this process are:

[0004] (1) Passively waiting for the product temperature to recover greatly prolongs the test time interval and reduces test efficiency;

[0005] (2) The aerospace products under test are heavy, and frequent manual disassembly and assembly of tooling poses certain safety hazards and may easily damage the products during operation, leading to quality problems.

[0006] (3) Fixed posture testing fixtures have poor versatility. When changing to a different product, new fixtures need to be redesigned, which increases testing costs.

[0007] (4) The test posture can only involve a few key posture measurement points, which cannot cover the posture range during the product's operation. In order to achieve cost reduction and efficiency improvement, safe testing and high-quality testing in the temperature chamber testing process, it is necessary to design a new type of flipping device suitable for temperature chamber testing. Summary of the Invention

[0008] The purpose of this invention is to disclose a single-degree-of-freedom self-locking flipping device for temperature chamber testing, in order to solve the problems of cost reduction and efficiency improvement, safe testing and high-quality testing in the temperature chamber testing process.

[0009] The technical solution of this invention is:

[0010] This invention discloses a single-degree-of-freedom self-locking flipping device for temperature chamber testing. The device mainly consists of three parts: a device support (1), a flipping mechanism (2), and a drive module (3).

[0011] The device support (1) assembly includes a bearing bracket base (4), a profile (5), a spring top rod (6), a support side rail (7), a passive roller (8), a buffer block (9), and a locking screw (10); the basic structure of the support is built from the profile (5), which facilitates rapid replication and reduces costs; the bearing bracket base (4), the profile (5), the support side rail (7), the passive roller (8), and the buffer block (9) are fixedly connected together and can be regarded as the device's fixed frame; the spring top rod (6) is installed vertically upward on the fixed frame, and the locking screw (10) is freely placed on the screw holder;

[0012] In one specific embodiment, the drive module (3) includes a first linear module (15), a second linear module (16), a drive screw (17), a drive extension port (18), a handwheel (19), a support plate push wheel (20), and a slide rail support platform (21); the support plate push wheel (20) is fixed on the slide rail support platform (21), and the first linear module (15) and the second linear module (16) are a set of identical passive linear modules, with their motion platforms connected to the slide rail support platform (21); simultaneously, the slide rail... The slide rail support platform (21) is connected to the motion table on the drive screw (17). The input end of the drive screw (17) is equipped with a drive expansion port (18) and a handwheel (19). By cranking the handwheel (19) or rotating the drive expansion port (18), the rotational motion is converted into linear motion through the drive screw (17), which drives the slide rail support platform (21) to move linearly along the first linear module (15) and the second linear module (16). By changing the rotation direction of the drive expansion port (18) and the handwheel (19), linear reciprocating motion can be realized.

[0013] The flipping mechanism (2) assembly includes a rotating arm shaft support (22), a rotating arm torsion spring (23), a rotating arm fixing rod (24), a rotating arm shaft (25), a rotating arm (26), a buckle (27), a rotating arm bracket (28), a flipping table roller (29), a flipping table (30), a flipping table shaft (31), a tooling fixing hole (32), and a flipping table shaft support (33). The rotating arm shaft support (22) is mounted on the bearing bracket base (4). The rotating arm fixing rod (24) is connected to the left and right rotating arms (26), and the left and right rotating arms (26) can rotate around the rotating arm shaft (25). The rotating arm torsion spring (23) passes through the rotating arm shaft (25). The torsion end is locked below the rotating arm fixing rod (24), so that the left and right rotating arms (26) have restoring torque; the buckle (27) and the rotating arm bracket (28) are fixed on the tilting table (30), and the connection position between the rotating arm bracket (28) and the rotating arm (26) is a rotating pair; the tilting table rollers (29) are installed on the two sides of the tilting table (30) to reduce friction with the inner side of the support side rail (7); the tilting table (30) and the tilting table shaft support (33) are assembled with the tilting table shaft (31) to form a rotating pair; the tilting table shaft support (33) is installed on the slide rail support (21), and when the slide rail support (21) moves, the tilting table (30) can rotate around the tilting table shaft (31).

[0014] In one specific embodiment, a mouse clamp mechanism is assembled on the device support (1). The mouse clamp mechanism includes a mouse clamp mechanism limiting plate (11), a mouse clamp mechanism rotating shaft (12), a mouse clamp mechanism torsion spring (13), and a mouse clamp mechanism support plate (14).

[0015] The mouse clamp mechanism limiting plate (11) is vertically installed on the device support and is used to limit the rotation of the mouse clamp mechanism support plate (14). Under the pre-tightening torque of the mouse clamp mechanism torsion spring (13), the mouse clamp mechanism support plate (14) rotates around the mouse clamp mechanism pivot (12). The maximum rotation angle is blocked by the mouse clamp mechanism limiting plate (11). At this time, the mouse clamp mechanism support plate (14) is in an upright state.

[0016] In one specific embodiment, when the single-degree-of-freedom self-locking flipping device is in the upright posture test, the test product (34) and the tooling (35) are fixed in advance, the tooling (35) is placed on the flipping table (30) and limited by the buckle (27), the four locking screws (10) placed on the screw rack are removed respectively, passed through the tooling through hole (36), and installed in the tooling fixing hole (32) on the flipping table (30) to achieve complete fixation of the tooling (35) and the flipping table (30);

[0017] In one specific embodiment, when the single-degree-of-freedom self-locking flipping device is in the posture adjustment test, under the action of the torsion spring (13) of the mouse clamp mechanism, the mouse clamp mechanism support plate (14) rotates around the mouse clamp mechanism pivot (12) until the mouse clamp mechanism support plate (14) contacts the support plate push wheel (20).

[0018] In one specific embodiment, when the single-degree-of-freedom self-locking flipping device is in a horizontal posture test, the mouse clamp-like mechanism support plate (14) is completely upright and in contact with the test product (34), playing a supporting role.

[0019] The beneficial technical effects of this invention are:

[0020] The purpose of this invention is to provide a single-degree-of-freedom self-locking flipping device for temperature chamber testing, and its innovation lies in:

[0021] (1) This invention has a single degree of freedom and two working modes: manual and electric. Specifically, in the manual working mode, the handle on the handwheel converts the rotational motion into linear motion through the drive module, and then transmits it to the flipping mechanism to realize the flipping motion of the flipping table; in the electric working mode, an electric screwdriver gun drives the drive expansion port to rotate as the input drive.

[0022] (2) The present invention can realize the adjustment of the 90° temperature chamber test attitude range of aerospace products from upright attitude to horizontal attitude. In any temperature chamber test attitude, the designed drive screw meets the self-locking condition and does not require other locking mechanism to maintain the axial displacement of the screw, thereby making the flipping table remain unchanged during the temperature chamber test process.

[0023] (3) The flipping mechanism of the present invention is equipped with a spring-loaded torsion spring and a spring rod. The mechanism has a spring-loaded tendency at the near limit position, and the required input torque is small, which ensures the stability of the torque of the drive screw within the stroke range and there is no large impact stroke cycle. Attached Figure Description

[0024] Figure 1 This is an overall assembly drawing of the present invention;

[0025] Figure 2 This is an assembly diagram of the support for the device of the present invention;

[0026] Figure 3 For the present invention in Figure 2 Assembly drawing of the mouse clamp mechanism installed on the basis;

[0027] Figure 4 For the present invention in Figure 3 Assembly diagram for installing the drive module on the foundation;

[0028] Figure 5 This is an assembly diagram of the flipping mechanism of the present invention;

[0029] Figure 6 This is a test diagram of the upright posture of the present invention;

[0030] Figure 7 Adjusting the attitude test diagram for this invention;

[0031] Figure 8 This is a test diagram of the horizontal posture of the present invention;

[0032] in:

[0033] 1 is the device support, 2 is the tilting mechanism, and 3 is the drive module;

[0034] 4 is the bearing bracket base, 5 is the profile, 6 is the spring top rod, 7 is the support side rail, 8 is the passive roller, 9 is the buffer block, and 10 is the locking screw.

[0035] 11 is a mouse clamp-like mechanism limiting plate, 12 is a mouse clamp-like mechanism rotating shaft, 13 is a mouse clamp-like mechanism torsion spring, and 14 is a mouse clamp-like mechanism support plate;

[0036] 15 is the first linear module, 16 is the second linear module, 17 is the drive screw, 18 is the drive expansion port, 19 is the handwheel, 20 is the support plate push wheel, and 21 is the slide rail support platform;

[0037] 22 is the rotating arm pivot support, 23 is the rotating arm torsion spring, 24 is the rotating arm fixing rod, 25 is the rotating arm pivot, 26 is the rotating arm, 27 is the buckle, 28 is the rotating arm bracket, 29 is the tilting table roller, 30 is the tilting table, 31 is the tilting table pivot, 32 is the tooling fixing hole, and 33 is the tilting table pivot support;

[0038] 34 is the test product, 35 is the tooling, and 36 is the tooling through hole. Detailed Implementation

[0039] The technical solution of this application will be described in detail below with reference to the accompanying drawings.

[0040] Example 1

[0041] like Figure 1 As shown in the figure, the overall assembly diagram of the present invention mainly consists of three parts: device support (1), flipping mechanism (2) and drive module (3).

[0042] like Figure 2As shown, the support assembly of the device of the present invention includes a bearing bracket base (4), a profile (5), a spring top rod (6), a support side rail (7), a passive roller (8), a buffer block (9), and a locking screw (10). The basic structure of the support is built from the profile (5), which facilitates rapid replication and reduces costs. The bearing bracket base (4), profile (5), support side rail (7), passive roller (8), and buffer block (9) are fixedly connected together and can be regarded as the fixed frame of the device. The spring top rod (6) is installed vertically upward on the fixed frame, and the locking screw (10) is freely placed on the screw holder.

[0043] like Figure 3 As shown, a mousetrap-like mechanism is assembled on the device support. The mousetrap-like mechanism includes a mousetrap-like mechanism limiting plate (11), a mousetrap-like mechanism rotating shaft (12), a mousetrap-like mechanism torsion spring (13), and a mousetrap-like mechanism support plate (14). The mousetrap-like mechanism limiting plate (11) is vertically installed on the device support and serves to limit the rotation of the mousetrap-like mechanism support plate (14). Under the preload torque of the mousetrap-like mechanism torsion spring (13), the mousetrap-like mechanism support plate (14) rotates around the mousetrap-like mechanism rotating shaft (12). The maximum rotation angle is blocked by the mousetrap-like mechanism limiting plate (11), at which time the mousetrap-like mechanism support plate (14) is in an upright state.

[0044] like Figure 4 As shown, the drive module is further assembled, including a first linear module (15), a second linear module (16), a drive screw (17), a drive expansion port (18), a handwheel (19), a support plate push wheel (20), and a slide rail support platform (21). The support plate push wheel (20) is fixed on the slide rail support platform (21). The first linear module (15) and the second linear module (16) are a set of identical passive linear modules, and their motion platforms are connected to the slide rail support platform (21). At the same time, the slide rail support platform (21) is connected to the motion platform on the drive screw (17). The input end of the drive screw (17) is equipped with a drive expansion port (18) and a handwheel (19). By cranking the handwheel (19) or rotating the drive expansion port (18), the rotational motion is converted into linear motion via the drive screw (17), which drives the slide rail support platform (21) to move linearly along the first linear module (15) and the second linear module (16). By changing the rotation direction of the drive expansion port (18) and the handwheel (19), linear reciprocating motion can be achieved.

[0045] like Figure 5As shown, the tilting mechanism assembly of the present invention includes a rotating arm shaft support (22), a rotating arm torsion spring (23), a rotating arm fixing rod (24), a rotating arm shaft (25), a rotating arm (26), a buckle (27), a rotating arm bracket (28), a tilting table roller (29), a tilting table (30), a tilting table shaft (31), a tooling fixing hole (32), and a tilting table shaft support (33). The rotating arm shaft support (22) is mounted on the bearing bracket base (4). The rotating arm fixing rod (24) is connected to the left and right rotating arms (26), and the left and right rotating arms (26) can rotate around the rotating arm shaft (25). The rotating arm torsion spring (23) passes through the rotating arm shaft (25), and its torsional end is locked below the rotating arm fixing rod (24), so that the left and right rotating arms (26) have a restoring torque. The buckle (27) and the rotating arm bracket (28) are fixed on the tilting table (30). The rotating arm bracket (28) and the rotating arm (26) are connected at a rotating joint. The tilting table rollers (29) are installed on both sides of the tilting table (30) to reduce friction with the inside of the support side rail (7). The tilting table (30) and the tilting table pivot support (33) are assembled with the tilting table pivot (31) to form a rotating joint. The tilting table pivot support (33) is installed on the slide rail support (21). When the slide rail support (21) moves, the tilting table (30) can rotate around the tilting table pivot (31).

[0046] like Figure 6 As shown, the upright posture test of the present invention includes a single-degree-of-freedom self-locking flipping device, a test product (34), a fixture (35), and a fixture through hole (36). The test product (34) and the fixture (35) are fixed in advance. The fixture (35) is placed on the flipping table (30) and limited by the buckle (27). The four locking screws (10) are removed, passed through the fixture through hole (36), and installed in the fixture fixing hole (32) on the flipping table (30) to achieve complete fixation of the fixture (35) and the flipping table (30).

[0047] like Figure 7 As shown, in the posture adjustment test of the present invention, under the action of the torsion spring (13) of the mouse clamp mechanism, the support plate (14) of the mouse clamp mechanism rotates around the rotating shaft (12) of the mouse clamp mechanism until the support plate (14) of the mouse clamp mechanism contacts the push wheel (20) of the support plate.

[0048] like Figure 8 As shown, in the horizontal posture test of the present invention, the mouse clamp-like mechanism support plate (14) is completely upright and in contact with the test product (34), playing a supporting role.

[0049] Compared with the traditional temperature chamber testing process, a single-degree-of-freedom self-locking flipping device for temperature chamber testing solves the following technical problems:

[0050] (1) Under the condition of minimum degree of freedom (input degree of freedom is 1), by reasonably configuring the stiffness of the spring torsion spring and the spring rod, the flipping attitude adjustment of the large mass aerospace product is achieved with a small and stable input torque, thus solving the technical problem of difficult attitude adjustment.

[0051] (2) The designed drive screw meets the self-locking condition. After the input drive is removed, the action of other external forces will not affect the axial displacement of the screw and the attitude of the tilting table, thus solving the technical problem of difficulty in maintaining attitude.

[0052] (3) During the entire process of adjusting the aerospace product from an upright attitude to a horizontal attitude, the product is always directly above the device support, and its spatial envelope will not exceed the four directional boundaries of the device support, and will not occupy the space of the product being measured at the same time, thus solving the technical problem of large attitude spatial envelope.

[0053] A single-degree-of-freedom self-locking tilting device for temperature chamber testing: When the slide rail support platform (21) is located at the starting end of the handwheel (19), the tilting platform (30) is in a horizontal state and in an initial self-standing posture. By cranking the handwheel (19) clockwise or rotating the drive extension port (18), the drive screw (17) pushes the slide rail support platform (21) to move linearly towards the rotating arm shaft (25). The rotating arm (26) rotates around the rotating arm shaft (25) under the action of the rotating arm torsion spring (23) and the spring push rod (6). Consequently, the tilting platform (30) rotates around the rotating pair of the rotating arm support (28) and the tilting platform shaft (31), realizing the posture adjustment of the tested product. Simultaneously, the mouse-clamp-like mechanism support plate (14) rotates under the action of the passive mouse-clamp-like mechanism torsion spring (13). When the drive screw (17) pushes the slide rail support platform (21) to its limit stroke, the tilting platform (30) is in a vertical state and in a horizontal position. At this time, the mouse clamp-like mechanism support plate (14) is completely upright and used to support the test product in a vertical state. Similarly, by turning the handwheel (19) counterclockwise or rotating the drive expansion port (18), the drive screw (17) pulls the slide rail support platform (21) to move linearly towards the handwheel (19), realizing the adjustment from a horizontal position to a self-standing position. Since the device is equipped with a pre-tensioned torsion spring and a spring, the required driving torque of the device is small and the input torque is stable. Moreover, during the posture adjustment process, the personnel only need to operate the handwheel (19) or rotate the drive expansion port (18) and will not come into direct contact with the high and low temperature products, ensuring the safety of the operation process.

Claims

1. A single-degree-of-freedom self-locking flipping device for temperature chamber testing, characterized in that, The device mainly consists of three parts: a device support (1), a flipping mechanism (2), and a drive module (3); The device support (1) assembly includes a bearing bracket base (4), a profile (5), a spring top rod (6), a support side rail (7), a passive roller (8), a buffer block (9), and a locking screw (10). The basic structure of the support is built from the profile (5), which facilitates rapid replication and reduces costs. The bearing bracket base (4), profile (5), support side rail (7), passive roller (8), and buffer block (9) are fixedly connected together and can be regarded as the device's fixed frame. The spring top rod (6) is installed vertically upward on the fixed frame, and the locking screw (10) is freely placed on the screw holder.

2. The apparatus according to claim 1, characterized in that, The drive module (3) includes a first linear module (15), a second linear module (16), a drive screw (17), a drive expansion port (18), a handwheel (19), a support plate push wheel (20), and a slide rail support platform (21); the support plate push wheel (20) is fixed on the slide rail support platform (21), and the first linear module (15) and the second linear module (16) are a set of identical passive linear modules, and the motion platform on them is connected to the slide rail support platform (21); Meanwhile, the slide rail support platform (21) is connected to the motion table on the drive screw (17). The input end of the drive screw (17) is equipped with a drive expansion port (18) and a handwheel (19). By cranking the handwheel (19) or rotating the drive expansion port (18), the rotational motion is converted into linear motion through the drive screw (17), which drives the slide rail support platform (21) to move linearly along the first linear module (15) and the second linear module (16). By changing the rotation direction of the drive expansion port (18) and the handwheel (19), linear reciprocating motion can be realized.

3. The apparatus according to claim 2, characterized in that, The flipping mechanism (2) assembly includes a rotating arm shaft support (22), a rotating arm torsion spring (23), a rotating arm fixing rod (24), a rotating arm shaft (25), a rotating arm (26), a buckle (27), a rotating arm bracket (28), a flipping table roller (29), a flipping table (30), a flipping table shaft (31), a tooling fixing hole (32), and a flipping table shaft support (33). The rotating arm shaft support (22) is mounted on the bearing bracket base (4). The rotating arm fixing rod (24) is connected to the left and right rotating arms (26), and the left and right rotating arms (26) can rotate around the rotating arm shaft (25). The rotating arm torsion spring (23) passes through the rotating arm shaft (25). The torsion end is locked below the rotating arm fixing rod (24), so that the left and right rotating arms (26) have restoring torque; the buckle (27) and the rotating arm bracket (28) are fixed on the tilting table (30), and the connection position between the rotating arm bracket (28) and the rotating arm (26) is a rotating pair; the tilting table rollers (29) are installed on the two sides of the tilting table (30) to reduce friction with the inner side of the support side rail (7); the tilting table (30) and the tilting table shaft support (33) are assembled with the tilting table shaft (31) to form a rotating pair; the tilting table shaft support (33) is installed on the slide rail support (21), and when the slide rail support (21) moves, the tilting table (30) can rotate around the tilting table shaft (31).

4. The apparatus according to claim 3, characterized in that, A mouse-like mechanism is mounted on the device support (1). The mouse-like mechanism includes a mouse-like mechanism limiting plate (11), a mouse-like mechanism rotating shaft (12), a mouse-like mechanism torsion spring (13), and a mouse-like mechanism support plate (14). The mouse clamp mechanism limiting plate (11) is vertically installed on the device support and is used to limit the rotation of the mouse clamp mechanism support plate (14). Under the pre-tightening torque of the mouse clamp mechanism torsion spring (13), the mouse clamp mechanism support plate (14) rotates around the mouse clamp mechanism pivot (12). The maximum rotation angle is blocked by the mouse clamp mechanism limiting plate (11). At this time, the mouse clamp mechanism support plate (14) is in an upright state.

5. The apparatus according to claim 4, characterized in that, When the single-degree-of-freedom self-locking flipping device is in the upright posture test, the test product (34) and the tooling (35) are fixed in advance. The tooling (35) is placed on the flipping table (30) and limited by the buckle (27). The four locking screws (10) placed on the screw rack are removed, passed through the tooling through hole (36), and installed in the tooling fixing hole (32) on the flipping table (30) to achieve complete fixation of the tooling (35) and the flipping table (30).

6. The apparatus according to claim 5, characterized in that, When the single-degree-of-freedom self-locking flipping device is in the posture adjustment test, under the action of the torsion spring (13) of the mouse clamp mechanism, the mouse clamp mechanism support plate (14) rotates around the mouse clamp mechanism pivot (12) until the mouse clamp mechanism support plate (14) contacts the support plate push wheel (20).

7. The apparatus according to claim 6, characterized in that, When the single-degree-of-freedom self-locking flipping device is in a horizontal position test, the mouse clamp-like mechanism support plate (14) is completely upright and in contact with the test product (34), thus providing support.

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