A disc spring life detection fixture

Abstract

The application relates to a disc spring life detection clamp, which comprises a counterweight base, a mounting seat is arranged on the counterweight base, a driving mechanism and a fixing seat are mounted on the mounting seat, the output end of the driving mechanism faces the fixing seat, a gland is fixedly connected to the output end, a penetrating rod mechanism for penetrating a disc spring is detachably connected to the fixing seat, one end of the penetrating rod mechanism penetrates through the fixing seat and extends into the gland, so that a detection station for accommodating and positioning a disc spring test piece is formed. The driving mechanism is used for driving the gland to perform high-frequency reciprocating motion, manual pressing is replaced, unattended continuous operation can be realized, the detection efficiency is greatly improved, and the labor intensity is reduced; mechanical driving ensures that the stroke, speed and position precision of each compression are highly consistent, human factor interference is eliminated, the test result has excellent repeatability and comparability; mechanical positioning and clamping are adopted, the process is standardized, accidental damage caused by manual operation is avoided, and the integrity of the test piece before the test and the fairness of the test are ensured.

Description

Technical Field

[0001] This application relates to the field of performance testing technology, and in particular to a disc spring life testing fixture. Background Technology

[0002] Disc springs are elastic elements widely used in the machinery industry, and their fatigue life is a key indicator for measuring their performance and reliability. In existing technology, the life test of disc springs usually adopts a simple manual method: several disc springs are stacked together and threaded onto a pin, with end caps at both ends. Then, the operator manually presses the end caps to deform the disc springs, and then releases them to allow them to spring back. This cycle is repeated until the disc springs lose their elasticity or break, and their lifespan is recorded.

[0003] This traditional manual testing method has many drawbacks: First, manual operation is extremely labor-intensive and inefficient, making it difficult to conduct large-scale or long-term tests; second, it is difficult to maintain precision and consistency in manually applied loads and compression strokes, resulting in high dispersion and poor comparability of test results; finally, improper operation during specimen loading and unloading and force application can easily cause accidental damage to the disc springs, affecting test accuracy. Therefore, there is an urgent need for a disc spring life testing device that can achieve automated and standardized operation. Utility Model Content

[0004] Therefore, it is necessary to provide a disc spring life testing fixture to solve the problems of low efficiency, poor data consistency and easy damage to test pieces in manual testing, and to realize the automation and accuracy of disc spring life testing.

[0005] A disc spring life testing fixture includes a counterweight base, a mounting seat on the counterweight base, a drive mechanism and a fixed seat mounted on the mounting seat, the output end of the drive mechanism facing the fixed seat and fixedly connected to a pressure cap, and a rod-passing mechanism for passing through the disc spring detachably connected to the fixed seat, one end of the rod-passing mechanism passing through the fixed seat and extending into the pressure cap to form a testing station for accommodating and positioning the disc spring test piece.

[0006] As a preferred embodiment of the disc spring life testing fixture of this utility model, the mounting base includes a first part, which is connected to the counterweight base, and one side of the first part is disposed on the second part which is perpendicular to the first part.

[0007] As a preferred embodiment of the disc spring life testing fixture of this utility model, the driving mechanism includes a cylinder, which is fixed on the mounting base, and the counterweight base is provided with a solenoid valve for driving the cylinder.

[0008] As a preferred embodiment of the disc spring life testing fixture of this utility model, the fixed base and the mounting base are detachably connected, and the fixed base is provided with a first through hole with internal thread, the first through hole being coaxially arranged with the pressure cap.

[0009] As a preferred embodiment of the disc spring life testing fixture of this utility model, one end of the pressure cover is fixedly connected to the output end of the drive mechanism, and the other end is provided with a second through hole.

[0010] As a preferred embodiment of the disc spring life testing fixture in this utility model, the rod-through mechanism includes a rotating handle. One end of the rotating handle is provided with a handle, and the other end is provided with an external thread. The external thread matches the internal thread in the first through hole and is screwed onto a disc spring mounting shaft.

[0011] The beneficial effects of this utility model are: This invention utilizes a drive mechanism to drive the pressure cap in high-frequency reciprocating motion, completely replacing manual pressing. It can operate continuously without human intervention, greatly improving testing efficiency and reducing labor intensity. The mechanical drive ensures that the stroke, speed, and positional accuracy of each compression are highly consistent, eliminating human interference and making the test results have excellent repeatability and comparability. Through mechanical positioning and clamping, the process is standardized, avoiding accidental damage that may be caused by manual operation, and ensuring the integrity of the test specimens before testing and the impartiality of the test. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is one of the overall structural schematic diagrams of the fixture in the embodiments of this application; Figure 2 This is a second schematic diagram of the overall structure of the fixture in the embodiments of this application; Figure 3 This is a cross-sectional structural diagram of the fixture according to an embodiment of this application; Explanation of reference numerals in the attached figures: 1000, counterweight base; 2000, Mounting base; 3000, drive mechanism; 3100, cylinder; 3200, solenoid valve; 4000, Fixture; 5000, capping; 6000, disc spring; 7000, through-rod mechanism; 7100, rotary handle; 7200, disc spring mounting shaft. Detailed Implementation

[0014] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0015] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0016] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0017] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0018] In this application, unless otherwise expressly 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. Furthermore, "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] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0020] According to one aspect of this application, embodiments of this application provide a disc spring life testing fixture, which can be referred to in conjunction with the following: Figures 1 to 3 The disc spring life testing fixture includes a counterweight base 1000, a mounting base 2000, a drive mechanism 3000, a fixed base 4000, a pressure cap 5000, and a rod-passing mechanism 7000. The mounting base 2000 is mounted on top of the counterweight base 1000. The drive mechanism 3000 and the fixed base 4000 are mounted on top of the mounting base 2000 and arranged opposite to each other. The output end of the drive mechanism 3000 faces the fixed base 4000 and is fixedly connected to the pressure cap 5000. The rod-passing mechanism 7000 is detachably connected to the fixed base 4000. One end of the rod-passing mechanism 7000 passes through the fixed base 4000 and extends into the pressure cap 5000 to form a testing station for accommodating and positioning the disc spring 6000 specimen.

[0021] In this embodiment, the disc spring life testing fixture includes a counterweight base 1000, a mounting base 2000, a drive mechanism 3000, a fixing base 4000, a pressure cover 5000, and a rod-through mechanism 7000. The counterweight base 1000 provides a mounting foundation for the other components and can reduce vibration during operation of the other components. The rod-through mechanism 7000 is used to arrange the disc spring 6000 between the fixing base 4000 and the pressure cover 5000, and part of it can extend into the pressure cover 5000. The drive mechanism 3000 drives the pressure cover 5000 to perform linear reciprocating motion to perform a compression test on the disc spring 6000.

[0022] In one embodiment, see Figure 1 , Figure 2 and Figure 3 The mounting base 2000 is a rigid structure with an L-shaped cross-section. It includes a first part and a second part arranged vertically. This structure is heat-resistant and facilitates the arrangement of other components. The first part is used to connect with the counterweight base 1000 and to fix the fixing base 4000. The second part is used to fix the drive mechanism 3000.

[0023] In one embodiment, see Figure 1 , Figure 2 and Figure 3The drive mechanism 3000 includes a cylinder 3100, which is detachably fixed to the second part of the mounting base 2000. The cylinder 3100 has a third through hole at its output end corresponding to the position of the second part, allowing its piston rod to pass through. It also includes a solenoid valve 3200, which is fixed to the counterweight base 1000 or the cylinder 3100 and is used to control the linear reciprocating motion of the cylinder 3100. The solenoid valve 3200 can be connected to an external PLC controller and counter to set the test frequency and automatically record the number of cycles.

[0024] In one embodiment, see Figure 1 , Figure 2 and Figure 3 The fixing base 4000 is detachably connected to the first part of the mounting base 2000. It is provided with a first through hole. The first through hole includes a first cavity and a second cavity that are connected. The inner wall of the first cavity is provided with an internal thread for connecting the rod-through mechanism 7000. The inner wall of the second cavity is smooth, and its inner diameter is not less than the outer diameter of the part of the rod-through mechanism 7000 that extends into the pressure cover 5000 and not greater than the outer diameter of the disc spring 6000.

[0025] In one embodiment, see Figure 1 , Figure 2 and Figure 3 The outer wall of one end of the pressure cap 5000 is stepped, and this stepped structure cooperates with the third through hole on the second part to prevent it from passing through the third through hole. This end is also fixed to the piston rod of the cylinder 3100, and can make linear reciprocating motion under the drive of the piston rod. The other end of the pressure cap 5000 is provided with a second through hole. The inner wall of the second through hole is smooth, and its inner diameter is not less than the outer diameter of the part of the rod-inserting mechanism 7000 that extends into the pressure cap 5000 and not greater than the outer diameter of the disc spring 6000. The second through hole and the first through hole are arranged coaxially to facilitate the insertion of the rod-inserting mechanism 7000.

[0026] In one embodiment, see Figure 1 , Figure 2 and Figure 3 The rod-through mechanism 7000 includes a rotating handle 7100. One end of the rotating handle 7100 is provided with a handle to facilitate rotating the rod-through mechanism 7000. The other end is provided with an external thread that matches the internal thread in the first through hole. The other end is also provided with a disc spring mounting shaft 7200. The side of the disc spring mounting shaft 7200 connected to the rotating handle 7100 is provided with a fourth through hole. The fourth through hole is provided with an internal thread that matches the external thread. The outer surface of the disc spring mounting shaft 7200 is smooth. Its outer diameter is the same as the inner diameter of the disc spring 6000 and the same as the inner diameter of the second through hole and the second cavity. The disc spring mounting shaft 7200 can slide in the second through hole and the second cavity.

[0027] The working process of this utility model is as follows: Clamping the test piece: Rotate handle 7100 counterclockwise to retract disc spring mounting shaft 7200 into the first through hole in fixed base 4000. Then, use a clamping tool to place the disc spring 6000 to be tested between fixed base 4000 and pressure cover 5000. Subsequently, rotate handle 7100 clockwise to drive disc spring mounting shaft 7200 through disc spring 6000 to be tested until its end extends into the second through hole of pressure cover 5000, and disc spring 6000 to be tested enters the preset testing position.

[0028] Automatic detection: When the equipment is started, the solenoid valve 3200 controls the piston rod of the cylinder 3100 to reciprocate at a set frequency. When the piston rod extends, it pushes the pressure cap 5000 closer to the fixed seat 4000, compressing the disc spring 6000 under test; when the piston rod retracts, the pressure cap 5000 moves away from the fixed seat 4000, and the disc spring 6000 under test rebounds. This cycle repeats continuously.

[0029] Lifespan determination and recording: The system automatically records the number of compression cycles. When the disc spring 6000 under test undergoes plastic deformation or fracture and fails to spring back, its lifespan is determined to have ended. The system stops operating and records the total number of cycles as the lifespan data for the disc spring 6000. After the test is completed, the disc spring mounting shaft 7200 retracts into the first through hole within the fixing seat 4000, and the test piece can then be replaced.

[0030] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A disc spring life testing fixture, comprising a counterweight base, characterized in that: The counterweight base is provided with a mounting seat, on which a drive mechanism and a fixed seat are mounted. The output end of the drive mechanism faces the fixed seat and is fixedly connected to a pressure cover. A rod-passing mechanism for passing through the disc spring is detachably connected to the fixed seat. One end of the rod-passing mechanism passes through the fixed seat and extends into the pressure cover to form a testing station for accommodating and positioning the disc spring test piece.

2. The disc spring life testing fixture according to claim 1, characterized in that, The mounting base includes a first part, which is connected to a counterweight base, and one side of which is disposed on a second part perpendicular to the base.

3. The disc spring life testing fixture according to claim 1, characterized in that, The driving mechanism includes a cylinder, which is fixed on a mounting base, and a solenoid valve for driving the cylinder is provided on the counterweight base.

4. The disc spring life testing fixture according to claim 1, characterized in that, The fixed base and the mounting base are detachably connected, and the fixed base is provided with a first through hole with internal threads, which is coaxially arranged with the pressure cover.

5. The disc spring life testing fixture according to claim 4, characterized in that, One end of the pressure cap is fixedly connected to the output end of the drive mechanism, and the other end is provided with a second through hole.

6. The disc spring life testing fixture according to claim 1, characterized in that, The rod-through mechanism includes a rotating handle, one end of which is provided with a handle and the other end is provided with an external thread. The external thread matches the internal thread in the first through hole and is screwed onto a disc spring mounting shaft.

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