Accelerometer core high-temperature-resistant initial measurement device with high accuracy

Abstract

The utility model discloses a high-accuracy high-temperature-resistant initial measurement device for an accelerometer core. The high-temperature-resistant initial measurement device comprises a base; the meter core tool block is in a plate shape and is vertically fixed to the base, a heating plate is arranged in the middle of the interior of the meter core tool block, and the plane where the heating plate is located is parallel to the plane where the meter core tool block is located; the heat preservation cover is arranged on the outer side of the meter core tool block in a sleeving mode and fixedly connected with the base in a sleeving mode; the surface, connected with the base, of the movement tool block is defined as a first assembling surface, two narrow surfaces perpendicular to the first assembling surface are defined as second assembling surfaces, two wide surfaces perpendicular to the first assembling surface are defined as third assembling surfaces, a narrow surface parallel to the first assembling surface is defined as a fourth assembling surface, and the third assembling surfaces are used for installing a plurality of accelerometer movements to be tested. The device can ensure that the tested temperatures of all the to-be-tested accelerator cores are the same, and the test accuracy is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of accelerometer testing, in particular to a high-accuracy high-temperature resistant initial testing device for an accelerometer core. Background Art

[0002] Acceleration is an important parameter for calculating the instantaneous dynamic load and spatial position of aircraft, rockets and ships. An accelerometer is an instrument that measures acceleration and can measure acceleration continuously.

[0003] For accelerometers used in aerospace systems, special considerations need to be made in design and manufacturing. For example, the high temperature resistance of the accelerometer should reach 705°C. Therefore, the accelerometers used in aerospace systems need to be tested for their high temperature resistance after production. In the traditional high temperature resistance test of accelerometers, cotton cloth is usually wrapped around an accelerometer core to achieve heat insulation of the core. This test method can only achieve a single test and the operation is cumbersome, which prolongs the measurement cycle.

[0004] In order to speed up the measurement cycle, the prior art proposes a method of first installing multiple accelerometers on a whole core tooling block in sequence, then installing heating plates on both sides of the core tooling block, and setting a heat preservation cover on the outside of the core tooling block to perform high temperature resistance test on the accelerometer core. Although this method can perform high temperature resistance test on multiple accelerometers at one time, since the heating plates are on both sides of the core tooling block, the accelerometer cores at different distances from the heating plates on the entire core tooling block are heated unevenly, resulting in different measured temperatures of the accelerometer cores at different distances from the heating plates, which in turn causes some accelerometer cores to fail to meet the test temperature or some accelerometer cores to be damaged due to excessively high test temperatures, reducing the test accuracy. Utility Model Content

[0005] Based on this, it is necessary to provide a high-accuracy accelerometer core high-temperature resistance initial testing device to address the above technical problems, which can ensure that the tested temperature of each accelerometer core to be tested is the same, thereby ensuring the accuracy of the test.

[0006] The utility model provides a high-accuracy high-temperature resistance initial testing device for an accelerometer core, comprising:

[0007] Base;

[0008] The watch core tooling block is plate-shaped and vertically fixed to the base. A heating plate is arranged in the middle of the watch core tooling block, and the plane where the heating plate is located is parallel to the plane where the watch core tooling block is located;

[0009] The heat preservation cover is sleeved on the outside of the watch core tooling block and fixedly sleeved with the base;

[0010] The surface on the movement tooling block connected to the base is defined as the first assembly surface, the two narrow surfaces perpendicular to the first assembly surface are defined as the second assembly surface, the two wide surfaces perpendicular to the first assembly surface are defined as the third assembly surface, and the narrow surface parallel to the first assembly surface is defined as the fourth assembly surface. The third assembly surface is used to install multiple accelerometer movements to be tested.

[0011] In one embodiment, the third assembly surface is provided with two heating plate grooves and two sensor grooves, the two sensor grooves are provided between the two heating plate grooves, and the depth of the heating plate groove is half the thickness of the watch movement tooling block;

[0012] The two sensor grooves are respectively arranged close to the first assembly surface and the fourth assembly surface;

[0013] A heating plate is fixedly installed inside each heating plate slot, and a sensor is fixedly installed inside each sensor slot;

[0014] A first pressing plate is fixedly mounted on the top of each heating plate slot, and a second pressing plate is fixedly mounted on the top of each sensor slot.

[0015] In one of the embodiments, the second assembly surface is provided with an electronic connection socket board, the electronic connection socket board is fixedly connected to the second assembly surface, and the electronic connection socket board is provided with a plurality of electronic connection plugs.

[0016] In one embodiment, the heating plate in each heating plate slot is composed of a plurality of sub-heating plates, and the plurality of sub-heating plates are evenly distributed in the heating plate slot.

[0017] In one embodiment, the second assembly surface is provided with a first wiring groove, and the bottom of each first wiring groove is distributed with first wiring holes equal to the number of heating plates in each heating plate groove;

[0018] The first assembly surface is provided with a second wiring hole, and a third wiring hole is provided on the base at a position abutting against the first wiring groove;

[0019] The fourth assembly surface is provided with a second wiring groove, and the second wiring groove is connected to the first wiring groove through a through hole.

[0020] In one embodiment, a control module, a power module and a display module are also provided. The control module and the display module are both connected to the power module, each sub-heating plate is connected to the power module, and each sensor and display module is connected to the control module.

[0021] In one embodiment, the base is in a round pancake shape and the heat-insulating cover is in a barrel shape.

[0022] The beneficial effects of the utility model are as follows: in the high-accuracy accelerometer core high-temperature resistance initial testing device of the present invention, the heating plate is arranged in the middle of the core tooling block and is parallel to the plane where the core tooling block is located. Therefore, during the temperature resistance test, the distances from the multiple accelerometer cores to be tested located on the third assembly surface of the core tooling block to the heating plate are equal, and the heating is evenly heated. There will be no situation where the test temperature cannot be met, and there will be no situation where the accelerator core is damaged due to excessively high test temperature, thereby ensuring the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a high-accuracy accelerometer core high-temperature resistance initial testing device provided by an embodiment of the utility model;

[0024] Figure 2 It is a schematic diagram of the assembly relationship between the core tooling block and the base of the high-accuracy accelerometer core high-temperature resistance initial testing device provided by the embodiment of the utility model;

[0025] Figure 3 It is a schematic diagram of assembling an accelerometer to be tested and a core tooling block of a high-accuracy accelerometer core high-temperature resistance initial testing device provided by an embodiment of the utility model;

[0026] Figure 4 It is a schematic diagram of the structure of a core tooling block of a high-accuracy accelerometer core high-temperature resistance initial testing device provided by an embodiment of the utility model;

[0027] Figure 5 It is a schematic diagram of the assembly relationship between the heating plate slot and the heating plate of the high-accuracy high-temperature resistance initial measurement device for the accelerometer core provided by the embodiment of the utility model;

[0028] Figure 6 It is a schematic diagram of the base structure of a high-accuracy accelerometer core high-temperature resistance initial measurement device provided by an embodiment of the utility model;

[0029] Figure 7 The utility model is a schematic diagram of the structure of a core tooling block of a device for initially measuring a high temperature resistance core of an accelerometer with high accuracy provided by an embodiment of the utility model.

[0030] Explanation of the accompanying drawings: 1. base; 2. movement tooling block; 21. first assembly surface; 211. second wiring hole; 22. second assembly surface; 221. first wiring groove; 222. first wiring hole; 223. third wiring hole; 23. third assembly surface; 231. heating plate groove; 232. sensor groove; 233. first pressure plate; 234. second pressure plate; 24. fourth assembly surface; 241. second wiring groove; 25. sub-heating plate; 3. thermal insulation cover; 4. electronic connection socket board; 41. electronic connection plug; 5. accelerometer movement. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0032] It should be noted that in the description of the present invention, “upper”, “lower”, “top”, “bottom”, orientation or position relationship is based on the attached Figure 1 Regarding the orientation or positional relationship shown, it should be understood that these orientation terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In one embodiment, Figure 1 and Figure 2 As shown, Figure 1 It is a schematic diagram of the overall structure of a high-accuracy high-temperature resistant initial testing device for an accelerometer core provided by an embodiment of the utility model. Figure 2 The figure is a schematic diagram of the assembly relationship between the core tooling block 2 and the base 1 of the high-accuracy accelerometer core high-temperature resistance initial measurement device provided by the embodiment of the utility model. The high-accuracy accelerometer core high-temperature resistance initial measurement device of this embodiment includes:

[0034] Base 1; watch core tooling block 2, the watch core tooling block 2 is plate-shaped and vertically fixed to the base 1, a heating plate is arranged in the middle of the watch core tooling block 2, and the plane where the heating plate is located is parallel to the plane where the watch core tooling block 2 is located; thermal insulation cover 3, the thermal insulation cover 3 is sleeved on the outer side of the watch core tooling block 2, and is fixedly sleeved with the base 1.

[0035] The movement tooling block 2 is used to assemble the accelerometer to be tested, and the thermal insulation cover 3 is used to insulate the internal area thereof. Specifically, in the present embodiment, the base 1 is in the shape of a round pancake, and the thermal insulation cover 3 is in the shape of a barrel. In actual practice, the base 1 can be precision-machined from an aluminum alloy, and the exterior is treated with a bright silver hard anodized finish. The thermal insulation cover 3 can be formed using 3D printing technology, and the material is nylon, with gray paint sprayed on the surface. A slot can be provided on the thermal insulation cover 3, and a hand screw can be provided on the base 1. The thermal insulation cover 3 can be rotatably sleeved on the base 1 through the slot, and then the thermal insulation cover 3 can be fixedly sleeved on the base 1 through the hand screw.

[0036] The surface on the movement tooling block 2 connected to the base 1 is defined as the first assembly surface 21, the two narrow surfaces on the movement tooling block 2 that are perpendicular to the first assembly surface 21 are defined as the second assembly surface 22, the two wide surfaces on the movement tooling block 2 that are perpendicular to the first assembly surface 21 are defined as the third assembly surface 23, the narrow surface on the movement tooling block 2 that is parallel to the first assembly surface 21 is defined as the fourth assembly surface 24, and the third assembly surface 23 is used to install multiple accelerometer movements 5 to be tested.

[0037] It should be noted that the movement tooling block 2 is in the shape of a plate and is vertically fixedly connected to the base 1 , so the surface thereof connected to the base 1 is a narrow surface.

[0038] In this embodiment, the heating plate is arranged in the middle of the inner part of the watch core tooling block 2 and is parallel to the plane where the watch core tooling block 2 is located. The heat radiation to both sides of the heating plate is the same, so the multiple accelerometer watch cores 5 to be tested located on the third assembly surface 23 of the watch core tooling block 2 are in the same temperature environment and are heated evenly. There will be no situation where the test temperature cannot be met, and there will be no situation where the accelerator watch core is damaged due to excessively high test temperature, thereby ensuring the measurement accuracy.

[0039] In this embodiment, if Figure 3 As shown, Figure 3 It is a schematic diagram of the assembly of the accelerometer to be tested and the core tooling block 2 of the high-accuracy accelerometer core high temperature resistance initial test device provided by the embodiment of the utility model. The accelerometer core 5 to be tested is distributed on the two wide surfaces of the core tooling block 2, and the distance to the heating plate is equal. It should be noted that the multiple accelerometer cores 5 can be individually assembled on both sides of the core tooling block 2, or they can be assembled as multiple groups on both sides of the core tooling block 2. When there are multiple groups, each group can be assembled as a whole.

[0040] In one embodiment, Figure 4 As shown, Figure 4 It is a structural schematic diagram of the watch core tooling block 2 of the high-accuracy accelerometer watch core high-temperature resistant initial measurement device provided by an embodiment of the utility model. The third assembly surface 23 is provided with two heating plate grooves 231 and two sensor grooves 232. The two sensor grooves 232 are arranged between the two heating plate grooves 231. The depth of the heating plate groove 231 is half the thickness of the watch core tooling block 2.

[0041] The two sensor slots 232 are respectively arranged close to the first assembly surface 21 and the fourth assembly surface 24; a heating plate is fixedly installed inside each heating plate slot 231, and a sensor is fixedly installed inside each sensor slot 232; a first pressure plate 233 is fixedly installed on the top of each heating plate slot 231, and a second pressure plate 234 is fixedly installed on the top of each sensor slot 232.

[0042] The sensor is used to measure the temperature of the accelerometer core 5 , and the first pressing plate 233 and the second pressing plate 234 are used to protect the heating plate and the sensor.

[0043] In one embodiment, the second assembly surface 22 is provided with an electronic connection socket board 4, which is fixedly connected to the second assembly surface 22 and is provided with a plurality of electronic connection plugs 41. The plurality of electronic connection plugs 41 are used to connect with other measurement and testing systems.

[0044] like Figure 5 As shown, Figure 5 It is a schematic diagram of the assembly relationship between the heating plate slot 231 and the heating plate of the high-accuracy high-temperature resistant initial measurement device for the accelerometer core provided by an embodiment of the utility model. The heating plate in each heating plate slot 231 is composed of a plurality of sub-heating plates 25, and the plurality of sub-heating plates 25 are evenly distributed in the heating plate slot 231.

[0045] In this embodiment, a plurality of sub-heating plates 25 are used to form the entire heating plate, which can prevent the entire device from stopping working when one of them is damaged.

[0046] In one embodiment, Figure 6 and Figure 7 As shown, Figure 6 This is a schematic structural diagram of a base 1 of a high-accuracy high-temperature resistant initial measurement device for an accelerometer core provided by an embodiment of the utility model. Figure 7 It is a schematic diagram of the structure of the second wiring groove 241 of the high-accuracy high-temperature resistant initial measurement device of the accelerometer movement provided by an embodiment of the utility model. The second assembly surface 22 is provided with a first wiring groove 221, and the bottom of each first wiring groove 221 is distributed with first wiring holes 222 equal to the number of heating plates in each heating plate groove 231; the first assembly surface 21 is provided with a second wiring hole 211, and a third wiring hole 223 is provided at a position abutting the first wiring groove 221 on the base 1; the fourth assembly surface 24 is provided with a second wiring groove 241, and the second wiring groove 241 and the first wiring groove 221 are connected by a through hole.

[0047] In this embodiment, the cables used in the device are composed of an internal temperature control cable and an external signal transmission cable. The internal temperature control cable enters from the base 1, enters the first wiring groove 221 through the third wiring hole 223, and then passes through the first wiring hole 222 to connect with each sub-heating plate 25. The external signal transmission cable enters the second wiring hole 211 through the wiring hole in the middle of the base 1 and is connected to the sensor near the first assembly surface 21. The cable connected to the sensor near the fourth assembly surface 24 enters from the base 1, enters the first wiring groove 221 through the third wiring hole 223, and enters the second wiring groove 241 from the first wiring groove 221.

[0048] In one embodiment, a control module, a power module and a display module are also provided. The control module and the display module are both connected to the power module, each sub-heating plate 25 is connected to the power module, and each sensor and display module is connected to the control module.

[0049] When the high-accuracy accelerometer core high temperature resistance initial test device of this embodiment is used, the accelerometer core 5 to be tested is fixedly installed on both sides of the wide surface of the core tooling block 2, the heat preservation cover 3 is sleeved on the base 1, and then the control module is used to start the power module to control the heating plate to heat the accelerometer core to be tested, and the control module controls the sensor to work, collects the internal temperature of the heat preservation cover 3, and sends the collected temperature signal to the display for display. The device can evenly heat the accelerometer core 5 to be tested and ensure detection efficiency.

[0050] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the attached claims.

Claims

1. A high-accuracy accelerometer core high temperature resistance initial test device, characterized in that: include: Base (1); A watch movement tooling block (2), the watch movement tooling block (2) is plate-shaped and vertically fixed to the base (1); a heating plate is arranged in the middle of the watch movement tooling block (2), and the plane where the heating plate is located is parallel to the plane where the watch movement tooling block (2) is located; A heat-insulating cover (3), the heat-insulating cover (3) being sleeved on the outer side of the watch movement tooling block (2) and fixedly sleeved with the base (1); The surface of the movement tooling block (2) connected to the base (1) is defined as a first assembly surface (21), two narrow surfaces perpendicular to the first assembly surface (21) are defined as a second assembly surface (22), two wide surfaces perpendicular to the first assembly surface (21) are defined as a third assembly surface (23), and a narrow surface parallel to the first assembly surface (21) is defined as a fourth assembly surface (24). The third assembly surface (23) is used for mounting a plurality of accelerometer movement (5) to be tested.

2. The high-accuracy accelerometer core high-temperature resistance initial testing device according to claim 1 is characterized in that: The third assembly surface (23) is provided with two heating plate grooves (231) and two sensor grooves (232), and the depth of the heating plate grooves (231) is half the thickness of the watch movement tooling block (2); The two sensor grooves (232) are arranged between the two heating plate grooves (231), and the two sensor grooves (232) are arranged close to the first assembly surface (21) and the fourth assembly surface (24), respectively; A heating plate is fixedly mounted inside each heating plate slot (231), and a sensor is fixedly mounted inside each sensor slot (232); A first pressing plate (233) is fixedly mounted on the top of each heating plate slot (231), and a second pressing plate (234) is fixedly mounted on the top of each sensor slot (232).

3. The high-accuracy accelerometer core high-temperature resistance initial measurement device according to claim 2, characterized in that: The second assembly surface (22) is provided with an electronic connection socket board (4), the electronic connection socket board (4) is fixedly connected to the second assembly surface (22), and the electronic connection socket board (4) is provided with a plurality of electronic connection plugs (41).

4. The high-accuracy accelerometer core high-temperature resistance initial measurement device according to claim 3 is characterized in that: The heating plate in each heating plate slot (231) is composed of a plurality of sub-heating plates (25), and the plurality of sub-heating plates (25) are evenly distributed in the heating plate slot (231).

5. The high-accuracy high-temperature resistance initial testing device for an accelerometer core according to claim 4, characterized in that: The second assembly surface (22) is provided with a first wiring groove (221), and the bottom of each first wiring groove (221) is distributed with first wiring holes (222) equal in number to the number of heating plates in each heating plate groove (231); The first assembly surface (21) is provided with a second wiring hole (211), and a third wiring hole (223) is provided on the base (1) at a position abutting against the first wiring groove (221); The fourth assembly surface (24) is provided with a second wiring groove (241), and the second wiring groove (241) is connected to the first wiring groove (221) via a through hole.

6. The high-accuracy accelerometer core high-temperature resistance initial testing device according to claim 5, characterized in that: A control module, a power module and a display module are also provided. The control module and the display module are both connected to the power module, each of the sub-heating plates (25) is connected to the power module, and each of the sensors and the display module is connected to the control module.

7. The high-accuracy accelerometer core high-temperature resistance initial testing device according to claim 1, characterized in that: The base (1) is in the shape of a round cake, and the heat-insulating cover (3) is in the shape of a barrel.

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