Spring clip device and spring stiffness detection device

Abstract

The application relates to the technical field of detection equipment, and provides a leaf spring clamping device and a leaf spring stiffness detection equipment. The device comprises a base plate, a fixed positioning assembly connected to the base plate, the fixed positioning assembly comprising a first bottom plate, a first pressing plate, a first fastener and a first positioning column, wherein the first fastener is used for adjusting the gap between the first pressing plate and the first bottom plate to clamp one end of a to-be-detected leaf spring; a movable positioning assembly capable of moving towards or away from the fixed positioning assembly along the base plate, the movable positioning assembly comprising a second bottom plate, a second pressing plate, a second fastener and a second positioning column, wherein the second fastener is arranged through the second pressing plate and the second bottom plate, the second fastener is used for adjusting the gap between the second pressing plate and the second bottom plate to clamp the other end of the to-be-detected leaf spring, and the second positioning column and the first positioning column respectively abut against the opposite two ends of the to-be-detected leaf spring to position the to-be-detected leaf spring.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection equipment, and particularly provides a leaf spring clamping device and a leaf spring stiffness detection equipment. BACKGROUND

[0002] Micro-sized elastic parts are widely used in elastic precision assembly, which not only has high dimensional accuracy and position accuracy requirements, but also has certain stiffness requirements.

[0003] The leaf spring is a common form of micro-sized elastic parts, and in the related art, the two ends of the leaf spring are usually fixed, and the leaf spring is simplified into a simply supported beam, and the stiffness value of the leaf spring is obtained by solving the simply supported beam mechanical model. During the part replacement process, the plurality of fastening screws on the leaf spring clamping pressure plate need to be repeatedly disassembled and fixed, which is a tedious process, resulting in low efficiency of leaf spring stiffness detection. SUMMARY

[0004] The purpose of the embodiments of the present application is to provide a leaf spring clamping device and a leaf spring stiffness detection equipment to solve the technical problem that in the related art, when detecting the stiffness of the leaf spring, the plurality of fastening screws on the leaf spring clamping pressure plate need to be repeatedly disassembled and fixed during the part replacement process, which is a tedious process, resulting in low efficiency of leaf spring stiffness detection.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is to provide a leaf spring clamping device, comprising:

[0006] a base plate;

[0007] a fixed positioning assembly connected to the base plate, the fixed positioning assembly comprising a first bottom plate, a first pressure plate, a first fastener and a first positioning column, wherein the first fastener is provided through the first pressure plate and the first bottom plate, and the first fastener is used to adjust the gap between the first pressure plate and the first bottom plate to clamp one end of the leaf spring to be measured;

[0008] a movable positioning assembly, the movable positioning assembly being movable along the base plate towards or away from the fixed positioning assembly, the movable positioning assembly comprising a second bottom plate, a second pressure plate, a second fastener and a second positioning column, wherein the second fastener is provided through the second pressure plate and the second bottom plate, and the second fastener is used to adjust the gap between the second pressure plate and the second bottom plate to clamp the other end of the leaf spring to be measured, and the second positioning column and the first positioning column respectively abut the opposite two ends of the leaf spring to be measured to position the leaf spring to be measured.

[0009] The plate spring clamping device provided by the embodiment of the present application positions the two ends of the to-be-tested plate spring by the first positioning column and the second positioning column, effectively maintains the stability of the to-be-tested plate spring during clamping, does not need to repeatedly adjust the clamping pressing plate, and can realize rapid positioning of the to-be-tested plate spring; the movable positioning assembly can move along the base plate, so that the adjustment during clamping can be more rapid and accurate, and the cumbersome steps of frequent disassembly and assembly can be avoided, thereby improving the clamping efficiency of the to-be-tested plate spring; in addition, by adjusting the position of the movable positioning assembly relative to the fixed positioning assembly, the to-be-tested plate springs of different lengths or widths can be adapted to, which is helpful to improve the versatility and flexibility of the plate spring clamping device and is suitable for to-be-tested plate spring stiffness detection of various specifications.

[0010] In some embodiments, the fixed positioning assembly further comprises a first pin and a first limiting ring sleeved on the first pin, the surface of the first pressing plate facing the first base plate is provided with a first waist-shaped groove matched with the first pin, the first pin is inserted into the first waist-shaped groove and can move along the inner wall of the first waist-shaped groove, and the first limiting ring is arranged between the first pressing plate and the first base plate.

[0011] By adopting the above technical solution, in the plate spring dismounting process, the first pressing plate and the first base plate can be slid without jumping by using the first waist-shaped groove in the first pressing plate and the first limiting ring on the first pin, and the first pin cooperated in the first waist-shaped groove ensures that the sliding of the first pressing plate is along a straight line, so that the dismounting mode of the first pressing plate is changed from the original vertical dismounting to horizontal sliding dismounting, which can save the dismounting time of the first pressing plate and help to improve the efficiency of plate spring stiffness detection.

[0012] In some embodiments, the fixed positioning assembly further comprises a first elastic member, the first elastic member is sleeved on the first pin, one end of the first elastic member abuts against the first pin, and the other end of the first elastic member abuts against the first limiting ring.

[0013] By adopting the above technical solution, the assembly relationship of the first pin and the first elastic member facilitates the first pressing plate to quickly pop up upward to leave a clamping space when dismounting the first pressing plate, helps to improve the clamping efficiency, and makes clamping easier and faster.

[0014] In some embodiments, the movable positioning assembly further comprises a guide rail and a movable end slidingly connected to the guide rail, the guide rail is fixedly connected to the base plate, and the second base plate is connected to the movable end.

[0015] By adopting the above technical solution, when the plate spring is subjected to a downward pressure to produce elastic deformation, the movable end moves along the guide rail, and the follow-up of the movable end ensures that the plate spring will not appear plastic deformation; the setting of the guide rail enables the movable positioning assembly to move smoothly on the base plate, and the adjustment is more smooth, thereby simplifying the clamping process of the plate spring.

[0016] In some embodiments, the movable positioning assembly further comprises a second pin and a second limiting ring sleeved on the second pin, the second pressing plate is provided with a second waist-shaped groove matched with the second pin on a surface of the second pressing plate facing the second bottom plate, the second pin is inserted into the second waist-shaped groove and can move along an inner wall of the second waist-shaped groove, and the second limiting ring is arranged between the second pressing plate and the second bottom plate.

[0017] By adopting the above technical scheme, in the process of disassembling the leaf spring, the second pressing plate can slide without jumping between the second pressing plate and the second bottom plate by using the second waist-shaped groove in the second pressing plate and the second limiting ring on the second pin, the second pin is matched in the second waist-shaped groove to ensure that the second pressing plate slides along a straight line, and thus the disassembly mode of the second pressing plate is changed from the original vertical disassembly to horizontal sliding disassembly, which can save the disassembly time of the second pressing plate and help improve the efficiency of the leaf spring stiffness detection.

[0018] In some embodiments, the movable positioning assembly further comprises a second elastic member, the second elastic member is sleeved on the second pin, one end of the second elastic member abuts against the second pin, and the other end of the second elastic member abuts against the second limiting ring.

[0019] By adopting the above technical scheme, the assembly relationship of the second pin and the second spring facilitates the quick upward springing of the second pressing plate to leave a clamping space when the second pressing plate is disassembled, helps improve the clamping efficiency, makes clamping easier, and enables faster fixing.

[0020] In some embodiments, the leaf spring clamping device further comprises a positioning adjustment assembly, the fixed positioning assembly and the movable positioning assembly are arranged on one side of the base plate, and the positioning adjustment assembly is arranged on the other side of the base plate.

[0021] By adopting the above technical scheme, the cooperation of the fixed positioning assembly and the movable positioning assembly can realize reliable clamping and fixing of the leaf spring, help realize quick clamping of the leaf spring, the positioning adjustment assembly can adjust the position of the leaf spring, and help improve the positioning accuracy of the leaf spring clamping device.

[0022] In some embodiments, the positioning adjustment assembly comprises a positioning reference block, a micrometer telescopic rod, a micrometer support and a locking screw, the micrometer support and the locking screw are connected to the positioning reference block, and the micrometer telescopic rod is connected to the micrometer support.

[0023] By adopting the above technical scheme, the positioning accuracy of the leaf spring clamping device can be further improved.

[0024] In some embodiments, the leaf spring clamping device further comprises a first support and a second support, the first support is arranged between the first bottom plate and the first pressing plate, and the second support is arranged between the second bottom plate and the second pressing plate.

[0025] By adopting the technical scheme, the first support member can ensure the gap between the first bottom plate and the first pressing plate, and the second support member can ensure the gap between the second bottom plate and the second pressing plate, so that the deformation of the measured leaf spring caused by the too small gap is avoided, and the stiffness measurement of the measured leaf spring is affected.

[0026] The application further provides a leaf spring stiffness detection device, which comprises a measuring head and the leaf spring clamping device.

[0027] The leaf spring stiffness detection device provided by the application can effectively maintain the stability of the measured leaf spring during clamping by positioning the two ends of the measured leaf spring through the first positioning column and the second positioning column, and the measured leaf spring can be quickly positioned without repeatedly adjusting the clamping pressing plate. The adjustment during clamping can be more rapid and accurate by moving the movable positioning assembly along the base plate, and the tedious steps of frequent disassembly and assembly can be avoided, thereby improving the clamping efficiency of the measured leaf spring. In addition, the position of the movable positioning assembly relative to the fixed positioning assembly can be adjusted to adapt to measured leaf springs of different lengths or widths, which helps to improve the versatility and flexibility of the leaf spring clamping device and is suitable for stiffness detection of measured leaf springs of various specifications.

[0028] The above description is only a summary of the technical scheme of the application. In order to more clearly understand the technical means of the application, the application can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following will describe the specific embodiments of the application. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or related technical description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 is a structural schematic diagram of the leaf spring clamping device provided by an embodiment of the application;

[0031] Figure 2 is a structural schematic diagram of the fixed positioning assembly provided by an embodiment of the application;

[0032] Figure 3 is a structural schematic diagram of the movable positioning assembly provided by an embodiment of the application;

[0033] Figure 4 is a schematic diagram of the connection between the movable end and the guide rail provided by an embodiment of the application;

[0034] Figure 5is a structural schematic diagram of a positioning adjustment assembly provided by an embodiment of the present application.

[0035] In the figure, the reference signs are as follows: 100, a leaf spring clamping device; 10, a base plate; 20, a fixed positioning assembly; 21, a first bottom plate; 22, a first pressing plate; 221, a first waist-shaped slot; 222, a first positioning slot; 23, a first fastener; 24, a first positioning column; 25, a first pin; 26, a first limiting ring; 27, a first elastic member; 30, a movable positioning assembly; 31, a second bottom plate; 32, a second pressing plate; 33, a second fastener; 34, a second positioning column; 35, a second pin; 36, a second limiting ring; 37, a second elastic member; 38, a guide rail; 39, a movable end; 391, a ball; 40, a positioning adjustment assembly; 41, a positioning reference block; 42, a micrometer telescopic rod; 43, a micrometer support; 44, a locking screw; 50, a first support; 60, a second support; 200, a measuring head; 300, a leaf spring to be measured. DETAILED DESCRIPTION

[0036] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0037] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0038] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0039] In this application, unless otherwise expressly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0040] Please refer to Figure 1 The embodiment of the application provides a plate spring clamping device 100, which comprises a base plate 10, a fixed positioning assembly 20 and a movable positioning assembly 30.

[0041] The base plate 10 is a base, a base platform or the like structure. The base plate 10 is the mounting platform of other parts.

[0042] As shown in Figure 1 and Figure 2 , the fixed positioning assembly 20 is fixedly connected to the base plate 10. The fixed positioning assembly 20 comprises a first bottom plate 21, a first pressing plate 22, a first fastener 23 and a first positioning column 24.

[0043] The first bottom plate 21 is a plate, a table or the like structure with a certain thickness and rigidity.

[0044] The first pressing plate 22 is a plate, a table or the like structure with a certain thickness and rigidity.

[0045] The first pressing plate 22 is arranged on the first bottom plate 21, the plate spring to be measured 300 is located between the first bottom plate 21 and the first pressing plate 22, one side of the plate spring to be measured 300 is in contact with the first bottom plate 21, the other side of the plate spring to be measured 300 is in contact with the first pressing plate 22, the first bottom plate 21 supports the plate spring to be measured 300 from bottom to top, and the first pressing plate 22 presses the plate spring to be measured 300 from bottom to top.

[0046] The first positioning column 24 is a column, a rod or the like structure. The number of the first positioning column 24 can be one or more.

[0047] The first positioning column 24 is arranged between the first bottom plate 21 and the first pressing plate 22, the first bottom plate 21 is provided with a first positioning hole for accommodating the first positioning column 24, the first pressing plate 22 is provided with a first positioning groove 222 matched with the first positioning column 24, one end of the first positioning column 24 is inserted into the first positioning hole, and the other end of the first positioning column 24 is inserted into the first positioning groove 222.

[0048] The first fastener 23 can be a bolt, a fastening screw or the like structure. The first fastener 23 is arranged through the first pressing plate 22 and the first bottom plate 21, and is used to adjust the gap between the first pressing plate 22 and the first bottom plate 21 to clamp one end of the measured flat spring 300.

[0049] As shown in Figure 1 and Figure 3 The movable positioning assembly 30 can move towards or away from the fixed positioning assembly 20 along the base plate, and includes a second bottom plate 31, a second pressing plate 32, a second fastener 33 and a second positioning column 34.

[0050] The movable positioning assembly 30 can be movably connected to the base plate through a moving track, and is arranged opposite to the fixed positioning assembly 20 to fix the measured flat spring 300 from both ends respectively.

[0051] The second bottom plate 31 is a plate-shaped, table-shaped or the like structure with a certain thickness and rigidity.

[0052] The second pressing plate 32 is a plate-shaped, table-shaped or the like structure with a certain thickness and rigidity.

[0053] The second pressing plate 32 is arranged on the second bottom plate 31, and the measured flat spring 300 is located between the second bottom plate 31 and the second pressing plate 32. One side of the measured flat spring 300 is in contact with the second bottom plate 31, and the other side of the measured flat spring 300 is in contact with the second pressing plate 32. The second bottom plate 31 supports the measured flat spring 300 from bottom to top, and the second pressing plate 32 presses the measured flat spring 300 from bottom to top.

[0054] The second positioning column 34 is a column-shaped, rod-shaped or the like structure. The number of the second positioning column 34 can be one or multiple.

[0055] The second positioning column 34 is arranged between the second bottom plate 31 and the second pressing plate 32. The second bottom plate 31 is provided with a second positioning hole for accommodating the second positioning column 34, and the second pressing plate 32 is provided with a second positioning groove 322 matched with the second positioning column 34. One end of the second positioning column 34 is inserted into the second positioning hole, and the other end of the second positioning column 34 is inserted into the second positioning groove 322.

[0056] The second fastener 33 can be a bolt, a fastening screw or the like structure. The second fastener 33 is arranged through the second pressing plate 32 and the second bottom plate 31, and is used to adjust the gap between the second pressing plate 32 and the second bottom plate 31 to clamp one end of the measured flat spring 300.

[0057] The second positioning column 34 and the first positioning column 24 respectively abut against opposite ends of the measured flat spring 300 to position the measured flat spring 300.

[0058] The to-be-tested plate spring 300 clamping device provided by the embodiment of the present application positions the two ends of the to-be-tested plate spring 300 by the first positioning column 24 and the second positioning column 34, effectively maintains the stability of the to-be-tested plate spring 300 in the clamping process, and simultaneously does not need to repeatedly adjust the clamping pressing plate, so that the to-be-tested plate spring 300 can be quickly positioned; the movable positioning assembly 30 can be moved along the base plate, so that the adjustment in the clamping process can be more rapid and accurate, and the cumbersome steps of frequent disassembly and assembly can be avoided, thereby improving the clamping efficiency of the to-be-tested plate spring 300; in addition, by adjusting the position of the movable positioning assembly 30 relative to the fixed positioning assembly 20, different lengths or widths of the to-be-tested plate spring 300 can be adapted, which is helpful to improve the versatility and flexibility of the to-be-tested plate spring 300 clamping device and is suitable for stiffness detection of to-be-tested plate springs 300 of various specifications.

[0059] As shown in Figure 2 In some embodiments, the fixed positioning assembly 20 further includes a first pin 25 and a first limiting ring 26 sleeved on the first pin 25, the face of the first pressing plate 22 towards the first base plate 21 is provided with a first waist-shaped groove 221 matched with the first pin 25, the first pin 25 is inserted into the first waist-shaped groove 221 and can move along the inner wall of the first waist-shaped groove 221, and the first limiting ring 26 is arranged between the first pressing plate 22 and the first base plate 21.

[0060] The number of the first pin 25 can be one or multiple. The number of the first limiting ring 26 is the same as that of the first pin 25.

[0061] The first limiting ring 26 is matched with the first pin 25. The first waist-shaped groove 221 is matched with the first pin 25, and the first pin 25 can move along the groove wall of the first waist-shaped groove 221, that is, the first pin 25 can move horizontally and linearly along the extension direction of the first waist-shaped groove 221.

[0062] Under the cooperation of the first pin 25, the first limiting ring 26 and the first waist-shaped groove 221, when the to-be-tested plate spring 300 is disassembled, the first pressing plate 22 and the first base plate 21 slide without movement.

[0063] By adopting the above technical scheme, in the disassembly process of the to-be-tested plate spring 300, the first pressing plate 22 and the first base plate 21 can slide without movement by using the first waist-shaped groove 221 in the first pressing plate 22 and the first limiting ring 26 on the first pin 25, the first pin 25 is matched in the first waist-shaped groove 221 to ensure that the first pressing plate 22 slides along a straight line, so that the disassembly mode of the first pressing plate 22 is changed from the original vertical disassembly to horizontal sliding disassembly, the disassembly time of the first pressing plate 22 can be saved, and the efficiency of the stiffness detection of the to-be-tested plate spring 300 is improved.

[0064] As shown in Figure 2As shown in some embodiments, the fixed positioning assembly 20 further comprises a first elastic member 27, the first elastic member 27 is sleeved on the first pin 25, one end of the first elastic member 27 abuts against the first pin 25, and the other end of the first elastic member 27 abuts against the first limiting ring 26.

[0065] The first elastic member 27 can be a structure with elasticity. For example, a spring, elastic rubber, an elastic diaphragm, etc.

[0066] One end of the first elastic member 27 abuts against the first pin 25, and the other end of the first elastic member 27 abuts against the first limiting ring 26. When measuring the rigidity, the first elastic member 27 is in a compressed state, and when disassembling the first pressing plate 22, the elastic potential energy of the first elastic member 27 is released, driving the limiting ring to move upward, and the limiting ring abuts against the first pressing plate 22, thereby driving the first pressing plate 22 to pop up.

[0067] By adopting the above technical solution, the assembly relationship of the first pin 25 and the first elastic member 27 facilitates the first pressing plate 22 to quickly pop up upward to leave a clamping space when disassembling the first pressing plate 22, which helps to improve the clamping efficiency, makes the clamping more relaxed, and the fixing more rapid.

[0068] As shown in some embodiments, the fixed positioning assembly 20 further comprises a first elastic member 27, the first elastic member 27 is sleeved on the first pin 25, one end of the first elastic member 27 abuts against the first pin 25, and the other end of the first elastic member 27 abuts against the first limiting ring 26. Figure 1 、 Figure 3 and Figure 4 As shown in some embodiments, the movable positioning assembly 30 further comprises a guide rail 38 and a movable end 39 slidably connected to the guide rail 38, the guide rail 38 is fixedly connected to the base plate, and the second bottom plate 31 is connected to the movable end 39.

[0069] The guide rail 38 is a V-shaped guide rail.

[0070] The movable end 39 is slidably connected to the guide rail 38.

[0071] Optionally, a ball 391 is embedded between the guide rail 38 and the movable end 39, thereby reducing the measurement error caused by friction.

[0072] By adopting the above technical solution, when the elastic deformation is generated on the to-be-measured plate spring 300 by applying a downward pressure, the movable end 39 moves along the guide rail 38, and the follow-up of the movable end 39 ensures that the to-be-measured plate spring 300 will not appear plastic deformation; the setting of the guide rail 38 enables the movable positioning assembly 30 to move smoothly on the base plate, and the adjustment is more smooth, thereby simplifying the clamping process of the to-be-measured plate spring 300.

[0073] As shown in some embodiments, the fixed positioning assembly 20 further comprises a first elastic member 27, the first elastic member 27 is sleeved on the first pin 25, one end of the first elastic member 27 abuts against the first pin 25, and the other end of the first elastic member 27 abuts against the first limiting ring 26. Figure 1 and Figure 3As shown, in some embodiments, the active positioning component 30 further includes a second pin 35 and a second limiting ring 36 sleeved on the second pin 35. The surface of the second pressure plate 32 facing the second base plate 31 is provided with a second waist-shaped groove 321 that is adapted to the second pin 35. The second pin 35 is inserted into the second waist-shaped groove 321 and can move along the inner wall of the second waist-shaped groove 321. The second limiting ring 36 is disposed between the second pressure plate 32 and the second base plate 31.

[0074] The second limiting ring 36 is adapted to the second pin 35. The second waist-shaped groove 321 is adapted to the second pin 35, and the second pin 35 can move along the groove wall of the second waist-shaped groove 321, that is, the second pin 35 can move horizontally in a straight line along the extension direction of the second waist-shaped groove 321.

[0075] With the cooperation of the second pin 35, the second limiting ring 36, and the second waist-shaped groove 321, the second pressure plate 32 and the second base plate 31 slide without movement when the leaf spring 300 to be tested is disassembled.

[0076] By adopting the above technical solution, during the disassembly of the leaf spring 300 under test, the second waist-shaped groove 321 in the second pressure plate 32 and the second limiting ring 36 on the second pin 35 can achieve non-moving sliding between the second pressure plate 32 and the second base plate 31. The second pin 35 cooperates in the second waist-shaped groove 321 to ensure that the second pressure plate 32 slides in a straight line. In this way, the disassembly method of the second pressure plate 32 is changed from the original vertical disassembly to horizontal sliding disassembly, which can save the disassembly time of the second pressure plate 32 and help improve the efficiency of stiffness testing of the leaf spring 300 under test.

[0077] like Figure 1 and Figure 3 As shown, in some embodiments, the active positioning component 30 further includes a second elastic member 37, which is sleeved on the second pin 35, with one end of the second elastic member 37 abutting against the second pin 35 and the other end of the second elastic member 37 abutting against the second limiting ring 36.

[0078] The second elastic element 37 can be a structure with a certain degree of elasticity. For example, a spring, elastic rubber, elastic diaphragm, etc.

[0079] One end of the second elastic element 37 abuts against the second pin 35, and the other end of the second elastic element 37 abuts against the second limiting ring 36. During stiffness measurement, the second elastic element 37 is in a compressed state. When the second pressure plate 32 is disassembled, the elastic potential energy of the second elastic element 37 is released, driving the limiting ring to move upward. The limiting ring abuts against the second pressure plate 32, thereby causing the second pressure plate 32 to spring upward.

[0080] By adopting the technical scheme, the assembly relationship of the second pin 35 and the second spring facilitates the second pressing plate 32 to quickly pop up upward to leave a clamping space when the second pressing plate 32 is disassembled, which helps to improve the clamping efficiency, makes the clamping more easy, and makes the fixing more rapid.

[0081] As shown in Figure 1 and Figure 5 , in some embodiments, the measured leaf spring 300 clamping device further comprises a positioning adjustment assembly 40, the fixed positioning assembly 20 and the movable positioning assembly 30 are arranged on one side of the base plate, and the positioning adjustment assembly 40 is arranged on the other side of the base plate.

[0082] The positioning adjustment assembly 40 is used for fine adjustment of the clamping position of the measured leaf spring 300.

[0083] By adopting the technical scheme, the cooperation of the fixed positioning assembly 20 and the movable positioning assembly 30 can realize reliable clamping and fixing of the measured leaf spring 300, which helps to realize fast clamping of the measured leaf spring 300; the positioning adjustment assembly 40 can adjust the position of the measured leaf spring 300, which helps to improve the positioning accuracy of the measured leaf spring 300 clamping device.

[0084] As shown in Figure 1 and Figure 5 , in some embodiments, the positioning adjustment assembly 40 comprises a positioning reference block 41, a micrometer telescopic rod 42, a micrometer support 43 and a locking screw 44, the micrometer support 43 and the locking screw 44 are connected to the positioning reference block 41, and the micrometer telescopic rod 42 is connected to the micrometer support 43.

[0085] By adopting the technical scheme, the positioning accuracy of the measured leaf spring 300 clamping device can be further improved.

[0086] As shown in Figure 1 , Figure 2 and Figure 3 , in some embodiments, the measured leaf spring 300 clamping device further comprises a first support 50 and a second support 60, the first support 50 is arranged between the first bottom plate 21 and the first pressing plate 22, and the second support 60 is arranged between the second bottom plate 31 and the second pressing plate 32.

[0087] The first support 50 is a plate, a sheet or the like structure with a certain thickness and rigidity. The first support 50 can ensure the gap between the first bottom plate 21 and the first pressing plate 22, so as to avoid the plastic deformation of the measured leaf spring 300 caused by the too small gap between the first bottom plate 21 and the first pressing plate 22.

[0088] The second support 60 is a plate-shaped, sheet-shaped structure with a certain thickness and rigidity. The second support 60 can ensure the gap between the second bottom plate 31 and the second pressing plate 32, so as to avoid the plastic deformation of the measured leaf spring 300 caused by the too small gap between the second bottom plate 31 and the second pressing plate 32.

[0089] By adopting the above technical scheme, the first support 50 can ensure the gap between the first bottom plate 21 and the first pressing plate 22, and the second support 60 can ensure the gap between the second bottom plate 31 and the second pressing plate 32, so as to avoid the deformation of the measured leaf spring 300 caused by the too small gap, and affect the stiffness measurement of the measured leaf spring 300.

[0090] The application also provides a stiffness detection device for a measured leaf spring 300, which comprises the measuring head 200 and further comprises the above-mentioned measured leaf spring 300 clamping device.

[0091] One end of the measuring head 200 is flat-shaped, which is used to press downward the measured leaf spring 300. The flat shape can make the force exertion more uniform, and can avoid the bruising and deformation of the thin leaf spring during the measurement process. The measured leaf spring 300 can be provided with a groove, and the flat shape of the measuring head 200 is matched with the structure of the groove.

[0092] The other end of the measuring head 200 is connected with a sensor for measuring the pressure and displacement of the measuring head 200. The sectional design is adopted at the connection between the measuring head 200 and the sensor, so as to realize the 360-degree free rotation and locking of the measuring head 200, facilitate the quick alignment of the measured beam of the leaf spring, and the special-shaped measuring head 200 can accurately find the position of the loading point in cooperation with the positioning leaf spring.

[0093] The stiffness detection device for the measured leaf spring 300 provided by the application positions the two ends of the measured leaf spring 300 by the first positioning column 24 and the second positioning column 34, effectively maintains the stability of the measured leaf spring 300 during the clamping process, does not need to repeatedly adjust the clamping pressing plate, and can realize the quick positioning of the measured leaf spring 300. The movable positioning assembly 30 can move along the base plate, so that the adjustment during the clamping process can be more rapid and accurate, and the tedious steps of frequent disassembly and assembly can be avoided, thereby improving the clamping efficiency of the measured leaf spring 300. In addition, by adjusting the position of the movable positioning assembly 30 relative to the fixed positioning assembly 20, the measured leaf spring 300 with different lengths or widths can be adapted, which is helpful to improve the universality and flexibility of the measured leaf spring 300 clamping device, and is suitable for the stiffness detection of measured leaf springs 300 with various specifications.

[0094] The above is only a preferred embodiment of the application, and is not used to limit the application. Any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A leaf spring clamping device, characterized in that, The leaf spring clamping device includes: substrate; A fixed positioning assembly is connected to the base plate. The fixed positioning assembly includes a first base plate, a first pressure plate, a first fastener, and a first positioning post. The first fastener passes through the first pressure plate and the first base plate and is used to adjust the gap between the first pressure plate and the first base plate to clamp one end of the leaf spring to be tested. A movable positioning component is provided, which is movable along the base plate toward or away from the fixed positioning component. The movable positioning component includes a second base plate, a second pressure plate, a second fastener, and a second positioning post. The second fastener passes through the second pressure plate and the second base plate and is used to adjust the gap between the second pressure plate and the second base plate to clamp the other end of the leaf spring to be tested. The second positioning post and the first positioning post abut against the opposite ends of the leaf spring to be tested to position the leaf spring to be tested. The fixed positioning component further includes a first pin and a first limiting ring sleeved on the first pin. The surface of the first pressure plate facing the first base plate is provided with a first waist-shaped groove that matches the first pin. The first pin is inserted into the first waist-shaped groove and can move along the inner wall of the first waist-shaped groove. The first limiting ring is located between the first pressure plate and the first base plate. The fixed positioning component further includes a first elastic element, which is sleeved on the first pin, with one end of the first elastic element abutting against the first pin and the other end of the first elastic element abutting against the first limiting ring. The movable positioning component further includes a guide rail and a movable end slidably connected to the guide rail. The guide rail is fixedly connected to the base plate, and the second base plate is connected to the movable end. The movable positioning component further includes a second pin and a second limiting ring sleeved on the second pin. The surface of the second pressure plate facing the second base plate is provided with a second waist-shaped groove adapted to the second pin. The second pin is inserted into the second waist-shaped groove and can move along the inner wall of the second waist-shaped groove. The second limiting ring is located between the second pressure plate and the second base plate. The movable positioning component further includes a second pin and a second limiting ring sleeved on the second pin. The surface of the second pressure plate facing the second base plate is provided with a second waist-shaped groove adapted to the second pin. The second pin is inserted into the second waist-shaped groove and can move along the inner wall of the second waist-shaped groove. The second limiting ring is located between the second pressure plate and the second base plate. The active positioning component further includes a second elastic element, which is sleeved on the second pin, with one end of the second elastic element abutting against the second pin and the other end of the second elastic element abutting against the second limiting ring; The leaf spring clamping device further includes a first support member and a second support member, wherein the first support member is disposed between the first base plate and the first pressure plate, and the second support member is disposed between the second base plate and the second pressure plate.

2. The leaf spring clamping device according to claim 1, characterized in that, The leaf spring clamping device further includes a positioning adjustment component. The fixed positioning component and the movable positioning component are located on one side of the base plate, and the positioning adjustment component is located on the other side of the base plate.

3. The leaf spring clamping device according to claim 2, characterized in that, The positioning adjustment assembly includes a positioning reference block, a micrometer telescopic rod, a micrometer support, and a locking screw. The micrometer support and the locking screw are connected to the positioning reference block, and the micrometer telescopic rod is connected to the micrometer support.

4. A leaf spring stiffness testing device, comprising a probe, characterized in that, It also includes the leaf spring clamping device as described in any one of claims 1-3.

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