A counterweight strength detection device

Abstract

The utility model discloses a kind of balance block strength detection equipment, it is related to motor fittings production technical field, including rack, the upper end of the middle part of rack is equipped with feeding box, the inner wall of one side of rack is equipped with pressure sensor, the upper end of rack is horizontally slidably fitted with pressure block, one end of pressure block is fixed with movable block by connecting rod, the outside cover of pressure block is equipped with protective cover, stretching spring is fixed between protective cover and pressure block, feeding block is installed on protective cover, the side of rack close to pressure sensor is equipped with auxiliary discharging mechanism, the utility model can realize quick automatic feeding by feeding box cooperation feeding block, in the process of pressure detection, the inner wall of protective cover and rack is fitted, avoid balance block to be extruded and the fragment of burst injures personnel or surrounding object, safety factor is higher, the auxiliary discharging mechanism of setting can realize quick classification discharging, effectively improve operating efficiency.

Description

Technical Field

[0001] This utility model relates to the field of motor parts manufacturing technology, and in particular to a counterweight strength testing device. Background Technology

[0002] Motor balance weights are widely used in various motors. Their main function is to reduce motor vibration and noise, ensuring smooth motor operation. By mounting balance weights on the motor rotor, its mass and center of gravity can be adjusted, thereby changing the motor's moment of inertia and effectively reducing vibration amplitude, thus achieving the goal of reducing vibration and noise. During the manufacturing process of motor balance weights, their strength must be tested; only balance weights that pass the test can be put into use.

[0003] Regarding strength testing equipment for metal parts, a search revealed a strength testing device for hardware accessories R&D and production, disclosed in patent publication number CN213041636U. This device includes a main body, a pressure gauge, and a motor. An extrusion chamber is fixedly installed inside the main body, and a rubber plate is fixedly installed inside the extrusion chamber. A limiting groove is formed on the surface of the main body, and a first slider is inserted into the limiting groove. A placement plate is fixedly installed inside the extrusion chamber. Pushing the first slider places the accessory onto the surface of the placement plate. Releasing the first slider causes the extrusion plate to engage with the placement plate, thus enabling testing. This method simplifies and facilitates the testing process. A second slider and a pressure gauge are used, and the motor drives a rotating rod to rotate. A roller on the surface of the rotating rod pulls a rope, which in turn pulls the pressure gauge, pushing the extrusion rod inward. The pressure gauge detects the strength of the hardware accessory as the extrusion rod extrudes it.

[0004] Based on the above search and analysis of existing technologies, it has been found that existing strength testing devices similar to those disclosed above lack efficient loading and unloading structures and related protective structures, resulting in low strength testing efficiency and poor safety. Therefore, a balance block strength testing device is proposed to address these issues. Utility Model Content

[0005] The purpose of this application is to provide a counterweight strength testing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a counterweight strength testing device, including a frame, a feeding box with open top and bottom is installed at the upper middle part of the frame, multiple counterweights are stacked inside the feeding box, and a support plate is fixed on the inner wall of opposite sides at the lower end of the feeding box, and a feeding port one and a feeding port two are respectively provided on opposite sides at the lower end of the feeding box.

[0007] A pressure sensor is installed on one inner wall of the frame. A pressure block is horizontally slidably attached to the upper end of the frame. A movable block is fixed to one end of the pressure block by a connecting rod. A protective cover is provided on the outside of the pressure block. The protective cover is slidably sleeved on the outside of the connecting rod. A tension spring is fixed between the protective cover and the pressure block. A drive mechanism is installed on the frame to drive the movable block to move horizontally back and forth.

[0008] A feeding block that can pass horizontally through the feeding port is installed on the upper end of the side of the protective cover away from the moving block. The upper edge of the feeding block near the moving block is provided with a slope.

[0009] An auxiliary feeding mechanism is installed on the side of the frame near the pressure sensor;

[0010] Feeding port one and feeding port two are located on the side of the feeding box away from the auxiliary feeding mechanism and the side closer to the auxiliary feeding mechanism, respectively.

[0011] As a further supplement to this solution, the drive mechanism includes a drive motor and a threaded rod. The drive motor is mounted on the side end of the frame, and the threaded rod is threaded through the movable block and rotatably mounted on the inside of the frame. One end of the threaded rod is coaxially fixed with the output end of the drive motor.

[0012] As a further supplement to this plan, the horizontal width of feed port one is smaller than the horizontal width of feed port two.

[0013] As a further supplement to this solution, a limit post is vertically fixed at the upper end of the protective cover, a limit groove that matches the limit post is provided at the lower end of the feeding block, and a compression spring is vertically fixed between the feeding block and the protective cover.

[0014] As a further supplement to this solution, the auxiliary feeding mechanism includes an image acquisition unit and two feeding units. The image acquisition unit is installed on the inner top wall of the frame, and the two feeding units are installed on both sides of the frame respectively.

[0015] As a further supplement to this solution, the unloading unit includes an electric push rod, an unloading push plate, and a storage box. An extension frame for mounting the electric push rod is installed on the side end of the frame. The unloading push plate is installed on the output end of the electric push rod, and the storage box is fixed to the side end of the frame.

[0016] In summary, the technical effects and advantages of this utility model are as follows:

[0017] 1. In this utility model, during the process of the drive motor cooperating with the threaded rod to drive the movable block and the pressure block to move horizontally towards the side of the pressure sensor, the feeding block pushes a balance block located at the bottom of the feeding box outward from the second feeding port until it falls onto the frame. The pressure block continues to push it to the pressure sensor for compression. The pressure sensor detects the compression force in real time to determine the strength of the balance block. During the pressure detection process, due to the setting of the tension spring, it can be ensured that the pressure block can continuously move towards the side of the pressure sensor. The protective cover is in close contact with the inner wall of the frame to prevent the balance block from being crushed and breaking into fragments that could injure personnel or surrounding objects, thus increasing the safety factor.

[0018] 2. In this utility model, a limiting post is vertically fixed at the upper end of the protective cover, a limiting groove adapted to the limiting post is provided at the lower end of the feeding block, and a compression spring is vertically fixed between the feeding block and the protective cover. During the resetting process of the movable block and the pressure block, the inclined surface of the feeding block is pressed against a balance block located at the bottom of the feeding box. The feeding block moves down to avoid the balance block by utilizing the vertical downward component force it receives, and successfully completes the resetting. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure in this embodiment;

[0021] Figure 2 This is a schematic diagram of the structure in this embodiment with the feeding box removed;

[0022] Figure 3 This is a schematic diagram of the feeding box in this embodiment;

[0023] Figure 4 This is a schematic diagram of the structure of the protective cover and pressure block in this embodiment;

[0024] Figure 5 This is a schematic diagram of the structure of the protective cover and the feeding block in this embodiment.

[0025] In the diagram: 1. Frame; 2. Feeding box; 21. Pallet; 201. Feeding port one; 202. Feeding port two; 3. Movable block; 4. Connecting rod; 5. Pressure block; 6. Protective cover; 7. Tension spring; 8. Drive motor; 9. Threaded rod; 10. Feeding block; 1001. Limiting groove; 1002. Inclined surface; 11. Compression spring; 12. Limiting post; 13. Pressure sensor; 14. Image acquisition device; 15. Electric push rod; 16. Discharge push plate; 17. Storage box. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example: Reference Figure 1-5 The device for testing the strength of a balance block includes a frame 1. A feeding box 2 with open top and bottom is installed at the upper middle part of the frame 1. Multiple balance blocks are stacked inside the feeding box 2. A support plate 21 is fixed on the inner wall of opposite sides at the lower end of the feeding box 2. A feeding port 1 201 and a feeding port 202 are respectively provided on opposite sides at the lower end of the feeding box 2. The horizontal width of feeding port 1 201 is smaller than the horizontal width of feeding port 202.

[0028] A pressure sensor 13 is installed on the inner wall of one side of the frame 1. Of course, a conventional protective pressure plate and other protective structures (not shown in the figure) are also installed on the outside of the pressure sensor 13 to prevent the pressure sensor 13 from directly contacting the balance block, which can better protect the pressure sensor 13, but will not interfere with the detection of the pressure sensor 13. A pressure block 5 is horizontally slidably attached to the upper end of the frame 1. One end of the pressure block 5 is fixed to a movable block 3 through a connecting rod 4. A protective cover 6 is provided on the outside of the pressure block 5. The protective cover 6 is slidably sleeved on the outside of the connecting rod 4, and a tension spring 7 is fixed between the protective cover 6 and the pressure block 5. A drive mechanism for driving the movable block 3 to move horizontally reciprocally is installed on the frame 1. Specifically, the drive mechanism includes a drive motor 8 and a threaded rod 9. The drive motor 8 is installed on the side end of the frame 1. The threaded rod 9 (thread not shown) is threaded through the movable block 3 and rotatably installed on the inside of the frame 1. One end of the threaded rod 9 is coaxially fixed with the output end of the drive motor 8.

[0029] The upper end of the protective cover 6 away from the movable block 3 is equipped with a feeding block 10 that can pass horizontally through the feeding port 201. The upper edge of the feeding block 10 near the movable block 3 is provided with a slope 1002.

[0030] Based on the above structural configuration, as the drive motor 8, in conjunction with the threaded rod 9, drives the movable block 3, along with the pressure block 5, to move horizontally toward the side of the pressure sensor 13, the feeding block 10 pushes a balance block located at the bottom of the feeding box 2 outward from the feeding port 202 until it falls onto the frame 1. The pressure block 5 then continues to push it to the pressure sensor 13 for compression. The pressure sensor 13 detects the compression force in real time to determine the strength of the balance block. During the pressure detection process, the tension spring 7 ensures that the pressure block 5 can continuously move toward the side of the pressure sensor 13. The protective cover 6 is in contact with the inner wall of the frame 1 to prevent the balance block from being crushed and breaking into fragments that could injure personnel or surrounding objects.

[0031] The pressure sensor 13 is electrically connected to an external display device using conventional technology, allowing staff to view the current pressure in real time.

[0032] An auxiliary feeding mechanism is installed on the side of the frame 1 near the pressure sensor 13. Feed port 1 201 and feed port 202 are located on the side of the feeding box 2 away from the auxiliary feeding mechanism and the side near the auxiliary feeding mechanism, respectively. Specifically, the auxiliary feeding mechanism includes an image acquisition device 14 and two feeding units. The image acquisition device 14 is installed on the inner top wall of the frame 1, and the two feeding units are installed on both sides of the frame 1. More specifically, the feeding unit includes an electric push rod 15, a feeding push plate 16, and a storage box 17. An extension frame for the electric push rod 15 is installed on the side end of the frame 1. The feeding push plate 16 is installed on the output end of the electric push rod 15, and the storage box 17 is fixed to the side end of the frame 1.

[0033] After pressure is applied, the protective cover 6, movable block 3 and pressure block 5 are reset by the drive mechanism. During the reset process, the image acquisition device 14 acquires the shape of the tested balance block and compares it with the preset image by the corresponding image processor and other equipment to determine the strength value of the balance block. If the preset qualified conditions are met, the electric push rod 15 of one of the feeding units, together with the feeding push plate 16, pushes the balance block into the corresponding storage box 17. If the conditions are not met, the electric push rod 15 of another feeding unit, together with the feeding push plate 16, pushes the balance block into the corresponding storage box 17, thereby realizing automatic sorting and feeding.

[0034] It should be further explained that the image acquisition device 14 is preferably a conventional high-definition camera to capture images of the balance block. The post-processing and comparison of the captured images are all existing conventional technologies, which will only be briefly explained above. The specific judgment criteria for the balance block are also existing conventional technologies, which will not be elaborated here.

[0035] Among them, the upper end of the protective cover 6 is vertically fixed with a limiting post 12, and the lower end of the feeding block 10 is provided with a limiting groove 1001 that is adapted to the limiting post 12. A compression spring 11 is vertically fixed between the feeding block 10 and the protective cover 6. During the resetting process of the movable block 3 and the pressure block 5, the inclined surface 1002 of the feeding block 10 is pressed against a balance block located at the bottom of the feeding box 2. The feeding block 10 moves down to avoid the balance block by utilizing the vertical downward component force it receives, and successfully completes the resetting.

[0036] The working principle of this utility model is as follows: The balance blocks to be tested are stacked in the feeding box 2. The drive motor 8, in conjunction with the threaded rod 9, drives the movable block 3 and the pressure block 5 to move horizontally towards the side of the pressure sensor 13. During this process, the feeding block 10 pushes the balance block located at the bottom of the feeding box 2 outward from the feeding port 202 until it falls onto the frame 1. The pressure block 5 continues to push it to the pressure sensor 13 for compression. The pressure sensor 13 detects the compression force in real time to determine the strength of the balance block. During the pressure test, due to the setting of the tension spring 7, it can be ensured that the pressure block 5 can continuously move towards the side of the pressure sensor 13. The protective cover 6 is in contact with the inner wall of the frame 1 to prevent the balance block from being crushed and breaking into fragments that could injure personnel or surrounding objects.

[0037] After pressure is applied, the protective cover 6, movable block 3 and pressure block 5 are reset by the drive mechanism. During the reset process, the image acquisition device 14 acquires the shape of the tested balance block and compares it with the preset image by the corresponding image processor and other equipment to determine the strength value of the balance block. If the preset qualified conditions are met, the electric push rod 15 of one of the feeding units, together with the feeding push plate 16, pushes the balance block into the corresponding storage box 17. If the conditions are not met, the electric push rod 15 of another feeding unit, together with the feeding push plate 16, pushes the balance block into the corresponding storage box 17, thereby realizing automatic sorting and feeding.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 counterweight strength testing device, comprising a frame (1), characterized in that, The upper middle part of the frame (1) is equipped with a feeding box (2) that is open at both the top and bottom. Multiple balance blocks are stacked inside the feeding box (2). The lower part of the feeding box (2) has a support plate (21) fixed on the inner wall on both sides. The lower part of the feeding box (2) also has a feeding port one (201) and a feeding port two (202) respectively on both sides. A pressure sensor (13) is installed on one inner wall of the frame (1). A pressure block (5) is horizontally slidably attached to the upper end of the frame (1). A movable block (3) is fixed to one end of the pressure block (5) through a connecting rod (4). A protective cover (6) is provided on the outer side of the pressure block (5). The protective cover (6) is slidably sleeved on the outer side of the connecting rod (4). A tension spring (7) is fixed between the protective cover (6) and the pressure block (5). A drive mechanism for driving the movable block (3) to move horizontally back and forth is installed on the frame (1). The protective cover (6) has a feeding block (10) installed on the upper end of the side away from the movable block (3), which can pass horizontally through the feeding port (201). The upper edge of the feeding block (10) near the movable block (3) has a slope (1002). An auxiliary feeding mechanism is installed on the side of the frame (1) near the pressure sensor (13); The first feeding port (201) and the second feeding port (202) are respectively located on the side of the feeding box (2) away from the auxiliary feeding mechanism and on the side close to the auxiliary feeding mechanism.

2. The balance block strength testing device according to claim 1, characterized in that: The drive mechanism includes a drive motor (8) and a threaded rod (9). The drive motor (8) is installed on the side of the frame (1). The threaded rod (9) is threaded through the movable block (3) and rotatably installed on the inner side of the frame (1). One end of the threaded rod (9) is coaxially fixed with the output end of the drive motor (8).

3. The balance block strength testing device according to claim 1, characterized in that: The horizontal width of the first feed port (201) is smaller than the horizontal width of the second feed port (202).

4. The balance block strength testing device according to claim 3, characterized in that: The upper end of the protective cover (6) is vertically fixed with a limiting post (12), and the lower end of the feeding block (10) is provided with a limiting groove (1001) that is compatible with the limiting post (12). A compression spring (11) is vertically fixed between the feeding block (10) and the protective cover (6).

5. The balance block strength testing device according to claim 1, characterized in that: The auxiliary feeding mechanism includes an image acquisition device (14) and two feeding units. The image acquisition device (14) is installed on the inner top wall of the frame (1), and the two feeding units are respectively installed on both sides of the frame (1).

6. The balance block strength testing device according to claim 5, characterized in that: The feeding unit includes an electric push rod (15), a feeding push plate (16), and a storage box (17). An extension frame for mounting the electric push rod (15) is installed on the side end of the frame (1). The feeding push plate (16) is installed on the output end of the electric push rod (15). The storage box (17) is fixed to the side end of the frame (1).

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