A locking force detection device suitable for a wedge-shaped locking strip

Abstract

The utility model discloses a locking force detection device suitable for wedge locking strip, including base and install on the guide rail of base, the guide rail has a step surface, the step surface is in close contact with the guide rail side surface and is installed with locking strip and force block from inside to outside, the force block is in close contact with the power feeling limit seat and is provided with, and it includes sensor fixed base and positioner, one side of positioner is in close contact with the force block and sets up, and the other side integrally fixed connection has the positioner screw rod, the positioner screw rod bolt connection to the sensor fixed base center, the sensor fixed base fixed setting and side have through -hole, and it is used to install force sensor, the force block with locking strip fixed connection to with locking strip's locking force through positioner and positioner screw rod transmission to force sensor. The utility model discloses the device for directly measuring locking force, and the measurement method is simple, and the value is accurate, and the measurement value is the size of locking force, need not to carry out secondary conversion calculation.

Description

Technical Field

[0001] This utility model relates to the field of locking force detection technology. More specifically, this utility model relates to a locking force detection device suitable for wedge-shaped locking bars. Background Technology

[0002] With the development of science and technology, avionics equipment has rapidly evolved from discrete, independent electronic devices to highly integrated and modular systems. Wedge-shaped locking devices, as the connection medium between the integrated modular avionics equipment chassis and online replaceable modules, feature rapid locking and unlocking of modules and are a fundamental component for enabling rapid maintenance of the entire system. However, because avionics equipment is often exposed to harsh environments of high impact and high vibration, the locking force provided by the locking strip directly affects the safe operation of the entire electronic equipment. Due to the complex internal structure of the locking strip, it is difficult to accurately determine its locking force solely through theoretical calculations; traditional testing methods are indirect measurements, resulting in excessive errors, and the surface friction coefficient is difficult to ascertain. Therefore, this application designs a device for directly measuring the locking force. Utility Model Content

[0003] One objective of this invention is to provide a locking force detection device suitable for wedge-shaped locking bars. This device directly measures the locking force, has a simple measurement method, and provides accurate values. The measured value is the magnitude of the locking force without the need for secondary conversion calculations. When a single sensor is used, the measured value is equal to the magnitude of the locking force. When multiple sensors are used, the multiple measured values ​​are added together to obtain the magnitude of the locking force.

[0004] To solve the above-mentioned technical problems, this utility model provides a locking force detection device suitable for wedge-shaped locking bars, including a base and a guide rail mounted on the base. The guide rail has a stepped surface, and a locking bar and a force transmission block are installed on the stepped surface from the inside to the outside, closely attached to the side of the guide rail. A force transmission block is closely attached to a force-sensing limiting seat, which includes a sensor fixing seat and an adjusting block. One side of the adjusting block is closely attached to the force transmission block, and the other side is integrally fixedly connected to an adjusting screw. The adjusting screw is bolted to the center of the sensor fixing seat. The sensor fixing seat is fixedly installed and has a through hole on its side for installing a force sensor. The force transmission block is fixedly connected to the locking bar to transmit the locking force of the locking bar to the force sensor through the adjusting block and the adjusting screw.

[0005] Preferably, a fixing block is also fixedly installed on the base, and the sensor fixing seat is fixedly connected to the fixing block.

[0006] Preferably, the fixing block is provided with a stepped hole, and the fixing block and the sensor fixing seat are connected by mounting screws through the stepped hole.

[0007] Preferably, the base is provided with a guide hole, which is an elongated hole used for bolting and connecting the fixing block, and two or more fixing blocks and corresponding force-sensing limit seats are provided.

[0008] Preferably, the base is provided with a guide hole, which is a through hole and is used for bolting the fixing block, and one fixing block and one corresponding force-sensing limit seat are provided.

[0009] Preferably, the force transmission block is provided with multiple mounting slots spaced apart along its length, and the locking strip is connected to the force transmission block by screws through the mounting slots, so that the locking strip, the force transmission block and the force-sensing limit seat are subjected to forces in the same horizontal direction.

[0010] This utility model has at least the following beneficial effects:

[0011] 1. The detection device of this utility model is a device for directly measuring the locking force. The measurement method is simple and the value is accurate. The measured value is the magnitude of the locking force without the need for secondary conversion calculation. When a single sensor is set, the measured value is equal to the magnitude of the locking force. When multiple sensors are set, the multiple measured values ​​are added together to obtain the magnitude of the locking force.

[0012] 2. The detection device of this utility model, through its reasonable structural design, makes it applicable to the detection of the locking force of locking strips of different sizes, thus having wider applicability.

[0013] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of the second embodiment of the present invention;

[0016] Figure 3 This is an overall sectional view of the first embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of the base structure of the first embodiment of this utility model;

[0018] Figure 5 This is a schematic diagram of the base structure according to the second embodiment of the present invention;

[0019] Figure 6 This is a schematic diagram of the force-sensing limiting seat of this utility model;

[0020] Figure 7This is an explosion diagram of the force-sensing limiting seat of this utility model;

[0021] Figure 8 This is a schematic diagram showing the two states of the locking strip of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Base, 2. Guide rail, 3. Fixing block, 4. Force sensor limit seat, 4-1. Sensor fixing seat, 4-2. Adjustment block, 5. Force transmission block, 6. Force sensor, 7. Locking bar. Detailed Implementation

[0024] To better understand the purpose, structure, and function of this utility model, the following detailed description is provided in conjunction with the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0025] It should be noted that in the description of this utility model, the terms "horizontal", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] like Figures 1 to 8 As shown, this utility model provides a locking force detection device suitable for a wedge-shaped locking strip 7, including a base 1 and a guide rail 2 mounted on the base 1. The guide rail 2 has a stepped surface. A locking strip 7 and a force transmission block 5 are installed on the stepped surface from the inside to the outside, closely attached to the side of the guide rail 2. A force transmission block 5 is closely attached to a force-sensing limiting seat 4, which includes a sensor fixing seat 4-1 and an adjusting block 4-2. One side of the adjusting block 4-2 is closely attached to the force transmission block 5, and the other side is integrally fixedly connected to an adjusting screw. The adjusting screw is bolted to the center of the sensor fixing seat 4-1. The sensor fixing seat 4-1 is fixedly installed and has a through hole on its side for mounting a force sensor 6. The force transmission block 5 is fixedly connected to the locking strip 7 to transmit the locking force of the locking strip 7 to the force sensor 6 through the adjusting block and the adjusting screw.

[0027] The wedge-shaped locking bar 7 has one or more locking wedge blocks that move perpendicular to its longitudinal axis. The base 1 of this application is a support plate, a relatively heavy stainless steel plate measuring 110×150mm×10mm, providing fixed support for the installation of other components. The width of the step surface of the guide rail should ensure that the force transmission block does not slip off the wedge-shaped locking bar in the locked state, and that the force transmission block still partially protrudes from the step surface in the free state of the wedge-shaped locking bar to contact the force-sensing limiting seat. The contact surface of the force sensor, i.e., the measuring surface, transmits the locking force of the locking bar through the adjusting screw. Protective pads can be used to protect the contact surface. The center lines of the adjusting screw, the wedge-shaped locking bar, and the adjusting block are aligned to improve detection accuracy. Two rows of threaded holes are provided at the bottom of the guide rail, which are then fixed to the support plate, guiding the installation and constraining the displacement of the locking bar, providing force support for its locking.

[0028] like Figure 6 and Figure 7 As shown, the force-sensing limiting seat 4 consists of two parts: a sensor mounting base 4-1 and an adjusting block 4-2. The sensor mounting base 4-1 has three M3 threaded holes on its end face, which are fixed to the fixing block 3 with screws for mounting the force sensor 6; a middle M10 threaded hole allows the adjusting block 4-2 to connect to the sensor mounting base 4-1 via a surface thread; and a threaded hole on its circumferential side is used for mounting the force sensor 6. The force-sensing limiting seat 4 serves two purposes: mounting the force sensor 6 and limiting the force transmission block 5. The forming distance can be adjusted by adjusting the screwing length of the adjusting block 4-2.

[0029] In another technical solution, a fixing block 3 is also fixedly installed on the base 1, and the sensor fixing seat 4-1 is fixedly connected to the fixing block 3. The fixing block 3 has a threaded hole at its bottom and is fixed to the base 1 by screws and guide holes, so that the two form a whole.

[0030] In another technical solution, the fixing block 3 is provided with a stepped hole, and the fixing block 3 and the sensor mounting base 4-1 are connected by a screw installed through the stepped hole. The outer side of the fixing block 3 is set as an inclined surface, and a stepped hole is opened on the inclined surface for installing screws. Since the fixing block 3 is relatively large, the stepped hole allows for the connection between the fixing block 3 and the sensor mounting base 4-1 without the need for a very long screw.

[0031] In another technical solution, such as Figure 1 and Figure 4 As shown, the base 1 is provided with a guide hole, which is an elongated hole used for bolting and connecting the fixing block 3. Two or more fixing blocks and corresponding force-sensing limiting seats are provided. Figure 3As shown, the support plate has mounting holes. The upper two rows of mounting holes are used to fix the guide rail 2 and are used in conjunction with the threaded holes on the guide rail 2. The mounting holes are through holes. The lower two rows of guide holes provide mounting support for the fixing block 3. The guide holes are elongated channels. The fixing block 3 can be adjusted in installation position along the length of the guide hole according to the length of the locking strip 7. For example, when the locking strip has five sections, two fixing blocks can be set at intervals.

[0032] In another technical solution, such as Figure 2 and Figure 5 As shown, the base is provided with a guide hole, which is a through hole and used for bolt fixing of the fixing block. One fixing block and one corresponding force-sensing limit seat are provided. For example, when the locking bar has three sections, only one fixing block and one corresponding force-sensing limit seat are needed. At the same time, several guide holes are also provided to achieve threaded fixing of the fixing block, which simplifies the manufacturing process.

[0033] In another technical solution, the force transmission block 5 has multiple mounting slots spaced along its length. The locking strip 7 is connected to the force transmission block 5 via these mounting slots using screws, ensuring that the locking strip 7, the force transmission block 5, and the force-sensing limit seat 4 are subjected to forces in the same horizontal direction. The force transmission block 5 is a rectangular hard metal block with high strength and rigidity to prevent deformation under stress. Unequally spaced mounting slots are provided at its center height. The locking strip 7 can be connected to the force transmission block 5 via these mounting slots using screws, ensuring that the locking strip 7, the force transmission block 5, and the force-sensing limit seat 4 are subjected to forces in the same horizontal direction, resulting in accurate measurement. The mounting hole spacing of locking strips 7 varies depending on their size, and the mounting slots accommodate installations with different hole spacings.

[0034] The method for conducting the test using the testing device described in this application is as follows.

[0035] The guide rail 2 is fixed to the support plate with screws by engaging with the two rows of mounting holes on the upper side of the base 1 through its own threaded hole; the fixing block 3 is installed on the support plate with screws; the force-sensing limit seat 4 is connected and fixed to the fixing block 3 with screws through the three threaded holes on the end face; and the force sensor 6 is installed on the force-sensing limit seat 4.

[0036] One side of the force transmission block 5 is connected to the locking strip 7 by a screw and is placed on the guide rail 2, so that the other side fits tightly against the force-sensing limit seat 4, forming a guide groove with the side of the guide rail 2. By adjusting the length of the screw-in of the adjusting block 4-2 nut, the width of the guide groove can be adjusted to achieve the locking force test of locking strips 7 of different sizes.

[0037] This application Figure 1 The device described herein is suitable for testing the locking force of a five-section wedge-shaped locking bar 7. To ensure accurate measurement data, two force-sensing limit seats 4 are used, along with two force sensors 6 and two fixing blocks 3. This application... Figure 2The device described is suitable for testing the locking force of a three-section wedge-shaped locking bar 7. For accurate measurement data, a force-sensing limit seat 4 is used, along with a force sensor 6 and a fixing block 3. Taking the testing of the locking force of a five-section wedge-shaped locking bar 7 as an example... Figure 8 As shown, during use, adjust the adjusting block 4-2 so that the width of the guide groove (i.e., the space between the side of the guide rail and the force transmission block) is between the height of the locking strip 7 in its free state and locked state; use a wrench to rotate the screw on the locking strip 7 to gradually increase the height of the locking strip 7 (i.e., the horizontal distance between the force transmission block and the side of the guide rail, i.e., the width of the guide groove) until it is fully locked. During this process, the squeezing force between the locking strip 7 and the guide rail 2 is transmitted through the force transmission block 5 to the force sensor 6 connected to the force-sensing limit seat 4, and the data is read through the force measuring instrument display. The maximum locking force of the locking strip 7 is the sum of the values ​​measured by the two force sensors 6.

[0038] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model, and other modifications can be easily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and examples shown and described herein.

Claims

1. A locking force detection device suitable for wedge-shaped locking bars, characterized in that, The device includes a base and a guide rail mounted on the base. The guide rail has a stepped surface, and a locking strip and a force transmission block are installed on the stepped surface from the inside to the outside, closely attached to the side of the guide rail. The force transmission block is closely attached to a force-sensing limiting seat, which includes a sensor mounting base and an adjusting block. One side of the adjusting block is closely attached to the force transmission block, and the other side is integrally fixedly connected to an adjusting screw. The adjusting screw is bolted to the center of the sensor mounting base. The sensor mounting base is fixedly installed and has a through hole on its side for mounting a force sensor. The force transmission block is fixedly connected to the locking strip to transmit the locking force of the locking strip to the force sensor through the adjusting block and the adjusting screw.

2. The locking force detection device for wedge-shaped locking bars as described in claim 1, characterized in that, A fixing block is also fixedly installed on the base, and the sensor fixing seat is fixedly connected to the fixing block.

3. The locking force detection device for wedge-shaped locking bars as described in claim 2, characterized in that, The fixing block is provided with a stepped hole, and the fixing block and the sensor mounting base are connected by mounting screws through the stepped hole.

4. The locking force detection device for wedge-shaped locking bars as described in claim 2, characterized in that, The base is provided with a guide hole, which is an elongated hole and is used for bolting and connecting the fixing block. Two or more fixing blocks and corresponding force-sensing limit seats are provided.

5. The locking force detection device for wedge-shaped locking bars as described in claim 2, characterized in that, The base is provided with a guide hole, which is a through hole and is used for bolting the fixing block. The fixing block and the corresponding force-sensing limit seat are provided.

6. The locking force detection device for wedge-shaped locking bars as described in claim 1, characterized in that, The force transmission block has multiple mounting slots spaced apart along its length. The locking strip is connected to the force transmission block by screws through the mounting slots, so that the locking strip, the force transmission block and the force-sensing limit seat are subjected to forces in the same horizontal direction.

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