Mechanism for switching between rolling and sliding modes in test of friction sensitivity of energetic material

Abstract

The utility model discloses a mechanism of rollable and slideable mode switching of energetic material friction sensitivity test, include: drive mechanism still include: electric jar pressure head, its bottom middle section is provided with recess, and recess is rotatablely installed with disc friction block through center peg in, electric jar pressure head fixed mounting is in the output of drive mechanism, electric jar pressure head is about recess and is provided with the multiple sets of through -hole I of vertical linear distribution symmetry, disc friction block is provided with the through -hole II of even distribution of several on the circumference and passes through, and through -hole I is adapted with through -hole II, fixed part, it is the disc locking peg of anti -drop screw groove, and fixed part passes through through -hole I, through -hole II of one side in proper order, the through -hole I of other side realizes the connection of disc friction block and electric jar pressure head. The utility model discloses a mechanism of rollable and slideable mode switching of energetic material friction sensitivity test, has solved the problem that only single friction can be carried out to the existing friction sensitivity test device.

Description

Technical Field

[0001] This utility model relates to the field of energetic material testing technology, specifically to a mechanism for testing the friction sensitivity of energetic materials with a switchable rolling and sliding mode. Background Technology

[0002] In the study of energetic materials, friction sensitivity is an important parameter for assessing their safety. Traditional friction sensitivity tests typically use friction components to simulate the behavior of materials under different friction conditions.

[0003] Existing friction sensitivity testing devices generally rely on a single friction mode, such as application number: CN202420770830.1, a friction sensitivity testing device in which the upper sliding column translates relative to the lower sliding column, the sample is filled between the lower sliding column and the upper sliding column, and the friction sensitivity of the sample is tested by the relative sliding between the upper sliding column and the lower sliding column, which is a single sliding friction.

[0004] These devices, which can only perform one type of friction, require disassembly or replacement of parts when switching friction modes. This not only makes the testing process cumbersome but also affects testing efficiency. At the same time, the relatively fixed structure of these traditional devices makes it difficult to meet the need for rapid switching of friction modes, further reducing testing efficiency and increasing the workload of operators. Utility Model Content

[0005] One object of this invention is to solve at least the aforementioned problems and / or defects, and to provide at least the advantages described below.

[0006] To achieve these objectives and other advantages according to this invention, a mechanism for switching between rolling and sliding modes in testing the friction sensitivity of energetic materials is provided, comprising: a drive mechanism, and further comprising: The electric cylinder pressure head has a groove in the middle of its bottom, and a disc-shaped friction block is rotatably installed in the groove through a central pin. The electric cylinder pressure head is fixedly installed at the output end of the drive mechanism. The electric cylinder pressure head has multiple sets of through holes I that are symmetrically distributed vertically about the groove; The disc-shaped friction block has several through holes II evenly distributed in the circumference, and the through holes I and through holes II are adapted to each other. The fastener is a disc locking pin with a threaded groove to prevent it from falling off. The fastener passes through through hole I and through hole II on one side in sequence, and through hole I on the other side connects the disc-shaped friction block to the electric cylinder pressure head.

[0007] Preferably, the structure of the drive mechanism includes: Servo electric cylinder push rod; The pressure adapter has a protruding circular base at its bottom, and the pressure adapter is sleeved with the output end of the servo electric cylinder push rod. The downward pressure transfer limiting block has a hollow structure and a slot on the top side, which engages with the protruding circular base. The electric cylinder pressure head is fixedly installed below the downward pressure adapter limiting block, and a pressure sensor is provided between the electric cylinder pressure head and the protruding circular base.

[0008] Preferably, the four corners of the downward pressure transfer limiting block are fixedly connected to the electric cylinder pressure head by bolts.

[0009] Preferably, at least three sets of through holes I are provided.

[0010] Preferably, the number of through holes II is 6 to 12, which are evenly distributed circumferentially.

[0011] This utility model has at least the following beneficial effects: This device integrates a quick-detachable pin positioning structure with a disc-shaped friction block and an electric cylinder pressure head, enabling rapid switching between rolling and sliding friction modes. This improves the efficiency and accuracy of friction sensitivity testing, simplifies the operation process, and meets the practical needs of laboratory and industrial applications. When the fixing part is inserted, sliding friction is achieved; when removed, the disc-shaped friction block can rotate around the central pin to achieve rolling friction. The structure is simple and easy to operate, solving the problems of cumbersome switching and low testing efficiency of traditional friction components.

[0012] 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

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an enlarged schematic diagram of the electric cylinder pressure head of this utility model; The markings in the diagram are: 1. Drive mechanism, 11. Servo electric cylinder push rod, 12. Downward pressure adapter, 13. Circular base, 14. Downward pressure adapter limiting block, 15. Groove, 16. Pressure sensor, 2. Electric cylinder pressure head, 21. Groove, 3. Disc-shaped friction block, 4. Through hole I, 5. Through hole II, 6. Fixing component. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0015] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0016] It should be noted that in the description of this utility model, the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0018] Furthermore, in this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0019] The present invention will now be described in detail with reference to the accompanying drawings: Figure 1 - Figure 2 This invention discloses a mechanism for switching between rolling and sliding modes in testing the tribological sensitivity of energetic materials, comprising: a drive mechanism 1, and further comprising: The electric cylinder pressure head 2 has a groove 21 in the middle of its bottom, and a disc-shaped friction block 3 is rotatably installed in the groove 21 through a central pin. The electric cylinder pressure head 2 is fixedly installed at the output end of the drive mechanism 1. The electric cylinder pressure head 2 is symmetrically provided with multiple sets of through holes I4 arranged vertically about the groove 21; The disc-shaped friction block 3 has several through holes II5 evenly distributed in the circumference, and the through holes I4 are adapted to the through holes II5. The fixing part 6 is a disc locking pin with a threaded groove to prevent it from falling off. The fixing part 6 passes through the through hole I4 and through hole II5 on one side in sequence, and the through hole I4 on the other side realizes the connection between the disc-shaped friction block 3 and the electric cylinder pressure head 2.

[0020] Working principle: Before use, the operator first inserts the central pin through the center of the groove 21 of the electric cylinder pressure head 2 and into the center hole of the disc-shaped friction block 3 to achieve rotatable installation of the disc-shaped friction block 3; Then, select the method of use for the disc-shaped friction block 3 as needed. If it is sliding friction (the disc-shaped friction block 3 cannot rotate freely, and the friction generated by the sliding of the contact area between the two sides is tested), then the fixing piece 6 is passed through the through hole I4 and through hole II5 on one side in sequence, and the through hole I4 on the other side realizes the fixed connection between the disc-shaped friction block 3 and the electric cylinder pressure head 2. Then, start the drive mechanism 1 to move and test. If it is rolling friction (the disc-shaped friction block 3 can rotate freely, and the friction generated by its rolling on the test surface), then remove the fixing parts 6 one by one, so that the disc-shaped friction block 3 can roll around the central pin, and then start the drive mechanism 1 to move and carry out the test; The interference fit tolerance between the center pin and the electric cylinder pressure head 2 is H7 / k6; This device integrates a quick-detachable pin positioning structure on the disc-shaped friction block 3 and the electric cylinder pressure head 2, enabling rapid switching between rolling friction and sliding friction modes. This improves the efficiency and accuracy of friction sensitivity testing, simplifies the operation process, and meets the practical needs of laboratory and industrial applications. When the fixing part 6 is inserted, sliding friction is achieved; when removed, the disc-shaped friction block 3 can rotate around the central pin to achieve rolling friction. The structure is simple and the operation is convenient, solving the problems of cumbersome switching and low testing efficiency of traditional friction components.

[0021] As described above, the structure of the drive mechanism 1 includes: Servo electric cylinder push rod 11; The pressure adapter 12 has a protruding circular base 13 at its bottom, and the pressure adapter 12 is sleeved with the output end of the servo electric cylinder push rod 11. The downward pressure transfer limiting block 14 has a hollow structure and a slot 15 is provided on the top side. The slot 15 engages with the protruding circular base 13. The electric cylinder head 2 is fixedly installed below the downward pressing adapter limiting block 14, and a pressure sensor 16 is provided between the electric cylinder head 2 and the protruding circular base 13; The four corners of the downward pressure transfer limiting block 14 are fixedly connected to the electric cylinder pressure head 2 by bolts.

[0022] Working principle: Before use, install the pressure adapter 12 along the slot 15 and the pressure adapter limiting block 14. Then, fix the lower end of the pressure adapter limiting block 14 to the upper end of the electric cylinder pressure head 2 with bolts at the four corners. Install the pressure sensor 16 inside the pressure adapter limiting block 14. The pressure sensor 16 is in contact with the lower end face of the protruding circular base 13 and is placed on the upper end face of the electric cylinder pressure head 2. After the servo motor is started by an external power supply, the downward pusher 12 at the output end of the servo electric cylinder push rod 11 outputs downward thrust to the electric cylinder pressure head 2. The pressure sensor 16 is connected to the data processing module via a line. The data processing module is electrically connected to the weight control module. Finally, the control module reads the downward pressure data provided by the servo electric cylinder in real time. The pressure sensor 16 in this device has a range parameter of 0-500N.

[0023] In the above scheme, at least three sets of through holes I4 are provided.

[0024] The number of through holes II5 is 6 to 12, evenly distributed around the circumference.

[0025] Working principle: The combination of multiple through holes I4 and through holes II5 can be used to lock the discs of different sizes. The fixing between the multiple holes can make the disc-shaped friction block 3 fixed and stable in the groove 21 without displacement, avoiding test deviations caused by insecure fixing.

[0026] 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. For those skilled in the art, other modifications can be easily made. 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 the illustrations shown and described herein.

Claims

1. A mechanism for testing the tribological sensitivity of energetic materials with a switchable rolling / sliding mode, comprising: The drive mechanism is characterized by further comprising: The electric cylinder pressure head has a groove in the middle of its bottom, and a disc-shaped friction block is rotatably installed in the groove through a central pin. The electric cylinder pressure head is fixedly installed at the output end of the drive mechanism. The electric cylinder pressure head has multiple sets of through holes I that are symmetrically distributed vertically about the groove; The disc-shaped friction block has several through holes II evenly distributed in the circumference, and the through holes I and through holes II are adapted to each other. The fastener is a disc locking pin with a threaded groove to prevent it from falling off. The fastener passes through through hole I and through hole II on one side in sequence, and through hole I on the other side connects the disc-shaped friction block to the electric cylinder pressure head.

2. The mechanism for switching between rolling and sliding modes in the tribological sensitivity testing of energetic materials according to claim 1, characterized in that, The structure of the drive mechanism includes: Servo electric cylinder push rod; The pressure adapter has a protruding circular base at its bottom, and the pressure adapter is sleeved with the output end of the servo electric cylinder push rod. The downward pressure transfer limiting block has a hollow structure and a slot on the top side, which engages with the protruding circular base. The electric cylinder pressure head is fixedly installed below the downward pressure adapter limiting block, and a pressure sensor is provided between the electric cylinder pressure head and the protruding circular base.

3. The mechanism for switching between rolling and sliding modes in the tribological sensitivity testing of energetic materials according to claim 2, characterized in that, The four corners of the downward pressure transfer limiting block are fixedly connected to the electric cylinder pressure head by bolts.

4. The mechanism for switching between rolling and sliding modes in the tribological sensitivity testing of energetic materials according to claim 1, characterized in that, At least three sets of through holes I are provided.

5. The mechanism for switching between rolling and sliding modes in the tribological sensitivity testing of energetic materials according to claim 1, characterized in that, The number of through holes II is 6 to 12, which are evenly distributed around the circumference.

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