A product impact testing device

Abstract

The utility model is suitable for the technical field of impact test equipment, provides a product impact test device, including device frame and support mechanism, its characterized in be: device frame includes base (1), be provided with a vertical frame (6) on base (1), be provided with the mounting plate (5) of driving lift by first drive assembly on frame (6), be provided with a pendulum mechanism on mounting plate (5). For product quality evaluation provides more reliable, accurate data, improves the precision and efficiency of product impact test overall significantly, better satisfy the test demand of diversification, high accuracy.

Description

Technical Field

[0001] This utility model belongs to the technical field of impact testing equipment, and in particular relates to a product impact testing device. Background Technology

[0002] A pendulum impact testing machine is a type of impact testing machine used to determine the impact resistance of metallic materials under dynamic load, thereby judging the quality of the material under dynamic load.

[0003] The patent application CN218411152U, entitled "A Pendulum Impact Testing Device," mainly includes a base, a column fixed to the base, and a pendulum arm hinged to the top of the column. A hammer head is installed at the end of the pendulum arm, and a fixed bracket for supporting the workpiece is also provided on the base. Its working principle is that the pendulum arm is raised to a preset angle by manual operation or a simple driving structure. After release, the pendulum arm drives the hammer head to fall freely back down, impacting the workpiece on the fixed bracket, thereby completing the impact resistance test.

[0004] The existing device still has some shortcomings: First, the pendulum mechanism has no height adjustment function, and the pendulum arm is only fixedly hinged to the column, so it cannot flexibly adjust the impact position according to the height of the workpiece. It can only adjust the energy by changing the swing angle, which has poor adaptability. Second, the workpiece support is a fixed structure, which can only support workpieces of specific sizes, resulting in poor versatility. Third, it lacks precise angle control and anti-secondary impact design. The pendulum angle depends on manual judgment, and it is easy to swing back and forth after impact, affecting the test accuracy. There are some shortcomings in its use. Utility Model Content

[0005] This utility model provides a product impact testing device, which aims to solve the problems of inconvenient pendulum height adjustment, poor workpiece support adaptability, inaccurate impact angle control, and easy occurrence of secondary impacts in existing impact testing devices, resulting in difficulty in meeting the requirements for testing accuracy and efficiency.

[0006] This utility model is implemented as follows: a product impact testing device includes a device frame and a support mechanism. The device frame includes a base, a vertical frame is provided on the base, a mounting plate is provided on the frame and is driven to rise and fall by a first driving component, and a pendulum mechanism is provided on the mounting plate. The support mechanism is located on one side of the pendulum mechanism in the swing direction, and the workpiece is supported by the support mechanism to withstand the impact of the pendulum mechanism.

[0007] Preferably, the support mechanism includes a support frame, on which a guide rail is laterally arranged on one side of the support frame facing the pendulum assembly pendulum mechanism. Two locking sliders are slidably connected on the guide rail, and a support arm is fixedly connected to each locking slider.

[0008] Preferably, the pendulum mechanism includes a mounting frame, on which a rotating shaft is rotatably and laterally arranged. A second driving component is provided on the mounting frame to drive the rotating shaft to rotate. A rotating ring is rotatably sleeved on the rotating shaft. A hammer head is provided on the outer side of the rotating ring via a hammer rod. A clutch is also provided on the rotating shaft. The clutch controls the rotating ring to rotate synchronously with the rotating shaft to achieve hammer lifting, or to disengage the rotating ring from the rotating shaft to allow the hammer head to fall freely.

[0009] Preferably, the clutch includes a clutch fixed plate and a clutch moving plate. The clutch fixed plate rotates synchronously with the rotating shaft, and the clutch moving plate is coaxially fixedly connected to the rotating ring. When the clutch is energized, the clutch moving plate engages with the clutch fixed plate, causing the rotating ring to rotate synchronously with the clutch fixed plate.

[0010] Preferably, the second drive assembly includes a drive motor and a coupling, wherein the output shaft of the drive motor is connected to the rotating shaft through the coupling to achieve drive.

[0011] Preferably, the mounting bracket is further provided with an encoder for detecting the rotation angle of the rotating ring.

[0012] Preferably, a control box is provided on the base, and a control panel is provided on the control box.

[0013] Beneficial Effects: Compared with the prior art, the beneficial effects of this utility model are as follows: The product impact testing device of this utility model can flexibly adjust the height of the pendulum, not limited to a fixed height range, and can accurately align with the test part of workpieces of different heights, meeting diverse impact testing height requirements; the adjustable support components greatly improve the adaptability of workpiece support, and can easily adapt to workpieces of different specifications and shapes without additional replacement or customization of support components; it effectively solves the problem of insufficient testing accuracy and stability. Through precise detection and control methods, the impact angle can be accurately controlled, and secondary impacts caused by inertia after pendulum impact can be avoided, providing more reliable and accurate data for product quality assessment. Overall, it significantly improves the accuracy and efficiency of product impact testing, better meeting diverse and high-precision testing needs, especially when batch testing products of different specifications, where its advantages are even more prominent. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the device frame structure in this utility model; Figure 3 This is a schematic diagram of the support mechanism in this utility model; Figure 4This is a schematic diagram of the mounting plate and pendulum mechanism in this utility model; Figure 5 This is a schematic diagram of the pendulum mechanism in this utility model.

[0015] In the diagram: 1-Base, 2-Control box, 3-Pendulum mechanism, 31-Mounting frame, 32-Drive motor, 33-Coupling, 34-Rotating shaft, 35-Clutch fixed plate, 36-Clutch moving plate, 37-Rotating ring, 38-Encoder, 39-Hammer rod, 310-Hammer head, 4-Threaded screw, 5-Mounting plate, 6-Frame, 7-Support frame, 8-Guide rail, 9-Support arm, 10-Screw sleeve. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] Please see Figure 1-2 This utility model provides a technical solution: a product impact testing device, including a device frame and a support mechanism. The device frame includes a base 1, a vertical frame 6 is provided on the base 1, a mounting plate 5 driven to rise and fall by a first driving component is provided on the frame 6, and a pendulum mechanism 3 is provided on the mounting plate 5.

[0018] The first drive assembly includes a threaded screw 4 rotatably mounted vertically within the frame 6. The threaded screw 4 is driven by a servo motor located below the frame 6. A threaded sleeve 10 is threadedly connected to the surface of the threaded screw 4, and the threaded sleeve 10 is fixedly connected to the back of a mounting plate 5. The first drive assembly drives the mounting plate 5 to move up and down along the frame 6, thereby causing the pendulum mechanism 3 to move up and down, adjusting the height of the pendulum mechanism. The pendulum mechanism 3 is powered by a cable chain.

[0019] The frame 6 is also equipped with a vertical track, and the back of the mounting plate 5 is equipped with a slider that cooperates with the track. The mounting plate 5 is guided by the cooperation of the track and the slider, so that it moves vertically without deviating.

[0020] The support mechanism is located on one side of the swing direction of the pendulum mechanism 3, and the workpiece is supported by the support mechanism to withstand the impact of the pendulum mechanism 3.

[0021] Please refer to Figure 3 The support mechanism includes a support frame 7, on which a guide rail 8 is laterally arranged on one side facing the pendulum mechanism 3. Two locking sliders are slidably connected on the guide rail 8, and a support arm 9 is fixedly connected to each locking slider.

[0022] The bottom of the device frame and support mechanism are equipped with several casters, which can not only move the device, but also adjust the casters to the support state during testing, so that the equipment can be stably placed on the ground for testing.

[0023] In this embodiment, the position of the support arm 9 is adjusted by sliding the locking slider on the guide rail 8, thereby adjusting the distance between the two support arms 9, which can adapt to the support and clamping requirements of products of different specifications.

[0024] The support arm 9 can be installed on the locking slider by means of bolts, etc., so that different types of support arms 9 can be replaced according to the structure of different products to meet the clamping and support needs of different products.

[0025] Locking sliders can be locked by pressing screws or bolts with a handle, which is a mature existing technology and will not be elaborated here.

[0026] Please refer to Figure 4-5 Furthermore, the pendulum mechanism 3 includes a mounting frame 31, on which a rotating shaft 34 is rotatably and laterally arranged. A second driving component for driving the rotating shaft 34 to rotate is provided on the mounting frame 31. A rotating ring 37 is rotatably sleeved on the rotating shaft 34. A hammer head 310 is provided on the outer side of the rotating ring 37 via a hammer rod 39. A clutch is also provided on the rotating shaft 34. The clutch controls the rotating ring 37 to rotate synchronously with the rotating shaft 34 to achieve hammer lifting, or to disengage the rotating ring 37 from the rotating shaft 34 so that the hammer head 310 falls freely.

[0027] The hammer rod 39 is fixedly connected to the rotating ring 37. The hammer head 310 and the end of the hammer rod 39 can be connected by a thread or detachably by bolts, so that the hammer head can be replaced and different types of hammer heads such as flat head and pointed head can be selected.

[0028] The rotating ring 37 is rotatably connected to the rotating shaft 34 via a bearing and can rotate relative to the rotating shaft 34.

[0029] The clutch includes a clutch fixed plate 35 and a clutch moving plate 36. The clutch fixed plate 35 rotates synchronously with the rotating shaft 34. The clutch moving plate 36 is coaxially fixedly connected to the rotating ring 37. When the clutch is energized, the clutch moving plate 36 engages with the clutch fixed plate 35, causing the rotating ring 37 to rotate synchronously with the clutch fixed plate 35.

[0030] The clutch fixed plate 6 is fixedly mounted on the rotating shaft 34 by a flat key, and the clutch moving plate 36 is fixedly mounted on the side of the rotating ring 37 facing the clutch fixed plate 35. There is a small gap of about 0.2mm between the clutch fixed plate 35 and the clutch moving plate 36, and the clutch moving plate 36 is elastic and can deform. When the clutch is energized, the clutch fixed plate 35 attracts the clutch moving plate 36, causing it to deform and engage with the clutch fixed plate 35, so that the clutch moving plate 36 can rotate synchronously with the clutch fixed plate 35. During the engagement process, the rotating ring 37 will not move axially. In this state, the rotating shaft 34 rotates, which can drive the rotating ring 37 to rotate synchronously through the clutch, realizing the hammer lifting. When it rotates to a certain angle, the clutch is de-energized, and the clutch moving plate 36 separates from the clutch fixed plate 35. At this time, the rotating ring 37 is not restricted by the clutch and rotates under the gravity of the hammer head 310 and the hammer rod 309, thus automatically falling back to achieve the pendulum effect.

[0031] Furthermore, the second drive assembly includes a drive motor 32 and a coupling 33, wherein the output shaft of the drive motor 32 is connected to the rotating shaft 34 through the coupling 33 to achieve drive.

[0032] In this embodiment, the drive motor 32 is a servo motor that can rotate in both directions. By changing the direction of rotation, the rotation direction of the rotating shaft 4 can be changed, thereby changing the rotation direction of the mounting ring 37, so as to achieve the effect of changing the direction of the hammer or adjusting the initial position of the mounting ring 37.

[0033] Please refer to Figure 1 A control box 2 is mounted on the base 1, and a control panel is mounted on the control box 2. A control module is installed inside the control box 2. The control module can be a PLC or a microcontroller, used to preset experimental parameters, encoder data 38, and control the start, stop, forward and reverse rotation of the drive motor 32 and the energization and de-energization of the clutch.

[0034] The control module can be any existing mature technology that can meet the control requirements of this technical solution.

[0035] Second embodiment: In this embodiment, the mounting frame 31 is further equipped with an encoder 38 for detecting the rotation angle of the rotating ring 37. The mounting frame 31 is also equipped with a proximity switch for determining and adjusting the zero point of motion of the rotating ring 37 or the hammer head 310. The encoder 38 is located on the other side of the rotating ring 37. The encoder 38 is a ring encoder, coaxially arranged with the rotating ring 37, and can detect the rotation angle of the rotating ring 37. The controller reads the detection data. When the rotation reaches the preset angle of the controller, the controller controls the drive component to stop working, and the clutch is de-energized, releasing the pendulum to achieve the impact. After the pendulum rebounds after one impact, the encoder senses the rebound and re-energizes the clutch to stop the impact process and prevent secondary impacts.

[0036] For example, the zero-point position is set when the hammer head 310 is directly below and the hammer rod 39 is in a vertical state. When the mounting ring 37 is driven to rotate to raise the hammer, the rotation of the mounting ring 37 gradually increases to 30° or other angles between 0 and 90°. After rotating to this angle, the controller controls the drive motor 32 to stop rotating and de-energizes the clutch, causing the hammer head 310 to fall back. After passing the zero-point position, it reaches an angle between -30° or 0 and -90°. After impacting the product, it bounces back again. During the bounce back, it will pass the zero-point position again. At this time, the encoder 38 detects that the mounting ring 37 has passed the zero-point position, proving that one impact has ended. The controller reads the detection signal of the encoder 38. In order to avoid the hammer head 310 swinging back and forth and interfering with the test, the clutch is energized to brake the rotating ring 37 and stop the hammer head 310 from swinging.

[0037] Since the rotating ring 37 may not have stopped at the zero position after the last test, and the encoder 38 is an incremental encoder, it cannot automatically determine the accurate zero position when it is powered on. It can only use the position when it is powered on as the zero position. Therefore, a reference point needs to be determined. So, it is necessary to first determine that the mounting ring 37 is at the absolute zero position, and then the encoder 38 is powered on. Only when the mounting ring 37 rotates can the actual rotation angle be accurately detected.

[0038] Therefore, a proximity switch is set up, using a point on the clutch plate 35 as a reference point. The proximity switch detects the distance to this reference point. When this distance is a preset distance, it proves that the rotating ring 37 is at the absolute zero position. Then, the encoder 38 is energized, and the rotating ring 37 is driven to rotate and raise the hammer. The encoder 37 detects the rotation angle. If it is not at the preset distance, the clutch is first energized, causing the rotating ring 37 to rotate clockwise or counterclockwise by a certain angle. When the distance detected by the proximity switch reaches the preset distance, it indicates that the rotating ring 37 has been adjusted to the zero position. Then, the encoder 38 is energized to raise the hammer.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A product impact testing device, comprising a frame and a support mechanism, characterized in that: The device frame includes a base (1), a vertical frame (6) is provided on the base (1), a mounting plate (5) driven to rise and fall by a first drive component is provided on the frame (6), and a pendulum mechanism (3) is provided on the mounting plate (5). The support mechanism is located on one side of the swing direction of the pendulum mechanism (3), and the workpiece is supported by the support mechanism to withstand the impact of the pendulum mechanism (3).

2. The product impact testing device as described in claim 1, characterized in that: The support mechanism includes a support frame (7), on which a guide rail (8) is laterally arranged on one side facing the pendulum mechanism (3). Two locking sliders are slidably connected on the guide rail (8), and a support arm (9) is fixedly connected to each locking slider.

3. The product impact testing device as described in claim 1, characterized in that: The pendulum mechanism (3) includes a mounting frame (31), on which a rotating shaft (34) is rotatably arranged laterally. A second driving component is provided on the mounting frame (31) to drive the rotating shaft (34) to rotate. A rotating ring (37) is rotatably sleeved on the rotating shaft (34). A hammer head (310) is provided on the outer side of the rotating ring (37) through a hammer rod (39). A clutch is also provided on the rotating shaft (34). The clutch controls the rotating ring (37) to rotate synchronously with the rotating shaft (34) to achieve hammer lifting, or to disengage the rotating ring (37) from the rotating shaft (34) so ​​that the hammer head (310) falls freely.

4. The product impact testing device as described in claim 3, characterized in that: The clutch includes a clutch fixed plate (35) and a clutch moving plate (36). The clutch fixed plate (35) rotates synchronously with the rotating shaft (34). The clutch moving plate (36) is coaxially fixedly connected to the rotating ring (37). When the clutch is energized, the clutch moving plate (36) engages with the clutch fixed plate (35), causing the rotating ring (37) to rotate synchronously with the clutch fixed plate (35).

5. The product impact testing device as described in claim 3, characterized in that: The second drive assembly includes a drive motor (32) and a coupling (33), wherein the output shaft of the drive motor (32) is connected to the rotating shaft (34) through the coupling (33) to achieve drive.

6. The product impact testing device as described in claim 3, characterized in that: The mounting bracket (31) is also equipped with an encoder (38) for detecting the rotation angle of the rotating ring (37).

7. The product impact testing device as described in claim 1, characterized in that: A control box (2) is provided on the base (1), and a control panel is provided on the control box (2).

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