Pulley detection device

Abstract

This utility model relates to the field of belt pulley manufacturing technology and discloses a belt pulley testing device, including a testing platform, a support plate fixedly mounted on the top of the testing platform, and a pressure plate mounted on the support plate; a power mechanism for driving the pressure plate is also mounted on the support plate; a fixed cylinder is fixedly mounted inside the testing platform; a sliding shaft is slidably inserted into the fixed cylinder, and a conical block is rotatably fitted onto the top of the sliding shaft; a first spring is installed inside the fixed cylinder; the top end of the first spring is fixedly connected to the sliding shaft, and the bottom end is fixedly connected to the fixed cylinder; a flat plate is mounted above the testing platform, and the flat plate is rotatably connected to the sliding shaft; a guide groove is opened on the flat plate, and a push plate is slidably mounted in the guide groove, with a testing mechanism mounted on the push plate; a transmission mechanism is provided between the testing platform and the flat plate to drive the push plate to slide closer to or away from the sliding shaft. This utility model clamps and fixes the belt pulley using a pressure plate and a conical block, which has a simple structure, is easy to operate, and has high testing efficiency; at the same time, it only has one power mechanism, which is simple in structure and has low manufacturing and usage costs.

Description

Technical Field

[0001] This utility model relates to the field of belt pulley manufacturing technology, and in particular to a belt pulley testing device. Background Technology

[0002] Belt pulley inspection is the process of checking and evaluating the quality, performance, and operating status of belt pulleys. Its purpose is to ensure that they meet the usage standards and can work safely and stably. It mainly includes dimensional accuracy inspection, appearance and defect inspection, material and performance inspection, and dynamic balance inspection.

[0003] The pulley detection device described in announcement number CN221377881U includes a connecting plate, a detection platform engaged on one side of the connecting plate, and a detection mechanism on the top of the detection platform. The detection mechanism includes a connecting frame, a detection block, and a second electric push rod. An alarm box is fixedly connected to the top of the connecting frame, and the bottom of the connecting frame is fixedly connected to the second electric push rod. The bottom of the second electric push rod is fixedly connected to the detection platform. A spring is provided on one side of the second electric push rod, and a detection block is fixedly connected to the bottom of the spring. A displacement sensor is installed at the bottom of the detection block, and a mounting plate is fixedly connected to the top of the spring. The mounting plate is connected to the connecting frame by bolts, and an arc-shaped block is provided below the mounting plate.

[0004] Based on the above technical features, the problem is that in the existing technology, fixing the pulley requires first using a fixing plate to clamp it, and then using an arc-shaped block to abut against the inner wall of the pulley. The clamping process is cumbersome and the detection efficiency is low. At the same time, driving the detection mechanism to detect the pulley requires an independent power source, which is complex in structure and has high manufacturing and usage costs.

[0005] Therefore, it is necessary to solve the above problems by using a pulley detection device. Utility Model Content

[0006] The purpose of this invention is to provide a pulley detection device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a pulley detection device, including a detection platform, a support plate fixedly installed on the top of the detection platform, a pressure plate that can move up and down and rotate on its own mounted on the support plate; and a power mechanism for driving the pressure plate to move is also mounted on the support plate. A fixed cylinder is fixedly installed inside the testing platform, and the fixed cylinder is coaxially opposite the pressure plate along the vertical axis. The fixed cylinder is slidably inserted into the sliding shaft, and the top of the sliding shaft is rotatably fitted with a conical block for coaxially placing the pulley. A first spring is provided inside the fixed cylinder along the sliding direction of the sliding shaft; the top end of the first spring is fixedly connected to the sliding shaft, and the bottom end is fixedly connected to the fixed cylinder. A flat plate is provided above the testing platform, and the flat plate is rotatably connected to the sliding shaft; a guide groove is opened on the flat plate along the radial direction of the sliding shaft, and a push plate is slidably installed in the guide groove; a testing mechanism for belt pulley testing is installed on the push plate. A transmission mechanism is provided between the testing platform and the flat plate to drive the push plate to slide closer to or away from the slide shaft.

[0008] Preferably, the transmission mechanism includes two fixed plates, which are fixed on the testing table; the push plate is located between the two fixed plates, and each of the two fixed plates has a transmission groove, with the two transmission grooves facing each other in the horizontal direction; two push shafts are fixedly installed on the push plate, which are coaxially opposite each other and correspond one-to-one with the two transmission grooves; each push shaft is inserted into the corresponding transmission groove and abuts against the fixed plate where the corresponding transmission groove is located for transmission cooperation; a second spring is installed in the guide groove along the sliding direction of the push plate, with one end of the second spring fixedly connected to the push plate and the other end fixedly connected to the plate.

[0009] Preferably, a guide rod is fixedly arranged in the guide groove along the sliding direction of the push plate, the guide rod passes through the push plate, and the push plate and the guide rod are in a limiting sliding fit; the second spring is sleeved on the guide rod.

[0010] Preferably, the fixed plate has a vertical clearance groove, the bottom end of which is connected to the high end of the transmission inclined groove on the fixed plate; the push shaft is limited to slidingly engaging with the clearance groove connected to the corresponding transmission inclined groove.

[0011] Preferably, the detection mechanism includes a detector, a controller, and a buzzer; a push rod is provided on the push plate, the push rod passes through the push plate along the sliding direction of the push plate and is in a limiting sliding engagement with the push plate; the detector is fixed at the end of the push rod near the sliding shaft, a limiting cap is fixedly provided at the end of the push rod away from the sliding shaft, a third spring is fixedly provided between the push plate and the limiting cap, and the third spring is sleeved on the push rod; the controller and the buzzer are both fixed on the push plate, and the detector and the buzzer are both electrically connected to the controller.

[0012] Preferably, the power mechanism includes an electric push rod and a motor. The electric push rod is fixedly mounted on the support plate, the motor is fixedly mounted on the telescopic end of the electric push rod, and the pressure plate is coaxially fixed on the output shaft of the motor.

[0013] Preferably, the smaller radius axial end of the conical block faces the pressure plate.

[0014] The technical effects and advantages of this utility model are as follows: This utility model clamps and fixes the pulley with a pressure plate and a conical block, which is simple in structure, easy to operate, and has high detection efficiency. At the same time, as the plate moves up and down with the sliding shaft, the transmission mechanism can drive the push plate to slide closer to or away from the sliding shaft. The push plate drives the detection mechanism closer to or away from the pulley, reducing the power source, simplifying the structure, and reducing manufacturing and use costs. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the pressure plate of this utility model; Figure 3 This is a schematic diagram of the transmission mechanism of this utility model; Figure 4 This is a schematic diagram of the interior of the fixed cylinder of this utility model.

[0016] In the diagram: 1. Testing platform; 2. Electric push rod; 3. Motor; 4. Pressure plate; 5. Conical block; 6. Sliding shaft; 7. Fixed cylinder; 8. First spring; 9. Flat plate; 10. Guide rod; 11. Second spring; 12. Push plate; 13. Detector; 14. Push rod; 15. Third spring; 16. Push shaft; 17. Fixed plate; 18. Transmission slant. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] This utility model provides, for example Figures 1 to 4 The pulley testing device shown includes a testing platform 1. A fixed cylinder 7 is fixedly installed inside the testing platform 1, with the opening of the cylinder 7 facing vertically. A support plate, which is an inverted L-shaped plate, is fixedly installed on the top of the testing platform 1. A power mechanism is installed on the top of the support plate, and the power mechanism is connected to a pressure plate 4. The pressure plate 4 and the fixed cylinder 7 are coaxially opposed vertically.

[0019] Specifically, the power mechanism includes an electric push rod 2 and a motor 3. The electric push rod 2 is fixedly installed on the top of the support plate, with its telescopic end facing vertically downwards. The motor 3 is fixedly installed at the bottom of the telescopic end of the electric push rod 2, with its output shaft facing vertically downwards, and the pressure plate 4 is coaxially fixed to the bottom of the output shaft of the motor 3.

[0020] A sliding shaft 6 is slidably inserted into the fixed cylinder 7. A limiting block is fixedly installed along the axial direction at the circumferential end of the sliding shaft 6. The limiting block is elongated. A limiting groove is formed along the axial direction on the inner wall of the fixed cylinder 7. The limiting block is located in the limiting groove and slides in a limiting fit with the limiting groove.

[0021] A first spring 8 is vertically placed inside the fixed cylinder 7. The top end of the first spring 8 is fixedly connected to the sliding shaft 6, and the bottom end is fixedly connected to the fixed cylinder 7.

[0022] A conical block 5 is rotatably mounted on the top of the sliding shaft 6, and a pulley is mounted on and abuts against the conical block 5. The small-radius axial end of the conical block 5 faces upward toward the pressure plate 4, and the circumferential curved surface of the conical block 5 is used to adapt to pulleys with different central through-hole diameters.

[0023] A flat plate 9 is installed above the testing platform 1. A sliding shaft 6 passes through the flat plate 9, and the flat plate 9 is located between the conical block 5 and the limiting block and is rotatably connected to the sliding shaft 6. A guide groove is formed on the flat plate 9 along the radial direction of the sliding shaft 6, and the guide groove passes through the flat plate 9 vertically. A push plate 12 is slidably installed in the guide groove.

[0024] The push plate 12 includes a top plate and a bottom plate. The top plate is located above the plate 9 and is in limited sliding contact with the top end face of the plate 9. The bottom plate is located below the plate 9 and is in limited sliding contact with the bottom end face of the plate 9. A connecting block is fixedly provided between the top plate and the bottom plate. The connecting block passes through the guide groove and is in limited sliding cooperation with the guide groove.

[0025] A detection mechanism is installed on the push plate 12, which is used to detect the pulley.

[0026] Specifically, the detection mechanism includes a detector 13, a controller, and a buzzer. A push rod 14 is mounted on the push plate 12, passing through the push plate 12 along its sliding direction and engaging with it in a limiting sliding fit. The detector 13 is fixed to the end of the push rod 14 near the sliding shaft 6, and a limiting cap is fixed to the end of the push rod 14 away from the sliding shaft 6. A third spring 15 is sleeved on the push rod 14, with one end fixedly connected to the push plate 12 and the other end fixedly connected to the limiting cap. The controller and buzzer are both fixed to the push plate 12, and both the detector 13 and the buzzer are electrically connected to the controller. It should be noted that the controller can be electrically connected to a built-in power supply within the push plate 12 or to an external power supply. The controller is a commonly used device for detecting pulleys and is existing technology, so it will not be described in detail here.

[0027] A transmission mechanism is provided between the testing platform 1 and the plate 9. The transmission mechanism is used to drive the push plate 12 to slide closer to or away from the slide shaft 6.

[0028] Specifically, the transmission mechanism includes two fixed plates 17, both of which are vertical plates. The two fixed plates 17 are parallel and symmetrically arranged and not collinear. Both fixed plates 17 are fixed to the top of the testing table 1.

[0029] The bottom plate of the push plate 12 is located between two fixed plates 17. A transmission groove 18 is opened on each of the two fixed plates 17. The two transmission grooves 18 are opposite each other in the horizontal direction, and each transmission groove 18 passes through the fixed plate 17.

[0030] The lower end of each transmission groove 18 is close to the sliding shaft 6, and the upper end of each transmission groove 18 is far from the sliding shaft 6. Two push shafts 16 are fixedly mounted on the bottom plate of the push plate 12, with the bottom plate located between the two push shafts 16. The two push shafts 16 are coaxially opposite each other and correspond one-to-one with the two transmission grooves 18. Each push shaft 16 is inserted into the corresponding transmission groove 18 and abuts against the fixed plate 17 where the corresponding transmission groove 18 is located for transmission engagement.

[0031] A second spring 11 is installed in the guide groove along the sliding direction of the push plate 12. One end of the second spring 11 is fixedly connected to the push plate 12, and the other end is fixedly connected to the plate 9. A guide rod 10 is horizontally placed in the guide groove along the sliding direction of the push plate 12, and the guide rod 10 is fixedly connected to the plate 9. The guide rod 10 passes through the push plate 12, and the push plate 12 and the guide rod 10 are in a limiting sliding fit. The second spring 11 is sleeved on the guide rod 10.

[0032] Each fixed plate 17 has a vertical clearance groove, and the bottom end of each clearance groove is connected to the high end of the transmission inclined groove 18 on the fixed plate 17. Each push shaft 16 is limited and slidably engaged with the clearance groove connected to the corresponding transmission inclined groove 18.

[0033] Working principle: First, the pulley is loaded and positioned. The pulley to be tested is placed on the conical block 5. The pulley to be tested fits against the outer wall of the conical block 5 through its own central hole, thus achieving preliminary coaxial positioning.

[0034] Next, the pulley is clamped and fixed. The electric push rod 2 is activated, and its telescopic end pushes the motor 3 downwards. The output shaft of the motor 3 drives the pressure plate 4 to move downwards synchronously. When the bottom of the pressure plate 4 contacts the top of the pulley to be tested, the telescopic end of the electric push rod 2 continues to output thrust, forcing the pulley to push the conical block 5 downwards. The conical block 5 drives the sliding shaft 6 to slide axially downwards within the fixed cylinder 7, while the sliding shaft 6 compresses the first spring 8 within the fixed cylinder 7. The clamping and fixing of the pulley continues until the pressure plate 4 and the conical block 5 tightly clamp the pulley to be tested. The electric push rod 2 then stops extending, completing the clamping and fixing of the pulley.

[0035] As the sliding shaft 6 slides downward, the flat plate 9 moves downward synchronously with the sliding shaft 6. When the flat plate 9 moves downward, the push plate 12 moves downward synchronously with the flat plate 9. The push plate 12 drives the two push shafts 16 to slide downward in the relief grooves on the fixed plate 17, and then slide into the transmission inclined grooves 18 on the fixed plate 17.

[0036] When the two push shafts 16 slide within the corresponding transmission inclined grooves 18, they slide from the high end to the low end along the transmission inclined grooves 18 and gradually approach the slide shaft 6. During this process, the two push shafts 16 drive the push plate 12 to slide closer to the slide shaft 6. The guide rod 10 precisely limits the sliding direction of the push plate 12, and the push plate 12 compresses the second spring 11 in the guide groove during its sliding.

[0037] As the push plate 12 slides closer to the slide shaft 6, the third spring 15 drives the limit cap, which in turn drives the push rod 14. The push rod 14 then drives the detector 13 closer to the pulley to be tested until it comes into contact with the bottom of the pulley groove. During this contact process, the limit cap stretches the third spring 15.

[0038] Next, dynamic testing of the pulley is performed. Motor 3 is started, and the output shaft of motor 3 drives the pressure plate 4 to rotate. Because the pressure plate 4 is in close contact with the pulley to be tested, the pressure plate 4 drives the pulley to rotate, and the pulley to be tested drives the conical block 5 to rotate. During the rotation of the pulley to be tested, the detector 13 continuously collects detection data such as its surface dimensional accuracy and defects, and transmits the data to the controller on the push plate 12 in real time. If the controller determines that the detection data exceeds the standard range, it immediately controls the buzzer on the push plate 12 to emit an alarm signal, indicating that the pulley test is unqualified; if the data meets the standard, the buzzer remains silent.

[0039] After the test is completed, motor 3 is turned off. Once the pulley to be tested stops rotating, the electric push rod 2 is retracted. The electric push rod 2 drives motor 3 and pressure plate 4 to move upwards, disengaging from the top of the pulley to be tested. At this time, the compressed first spring 8 recovers its deformation, pushing the sliding shaft 6 upwards to reset within the fixed cylinder 7. The sliding shaft 6 drives the conical block 5 and the flat plate 9 to move upwards synchronously. During the upward movement of the flat plate 9, the push shaft 16 slides along the transmission inclined groove 18 from the lower end to the upper end. The second spring 11 recovers its deformation, pushing the push plate 12 to slide away from the sliding shaft 6 along the guide rod 10. During this process, the third spring 15 recovers its deformation and, after recovering, drives the limit cap away from the sliding shaft 6. The limit cap drives the push rod 14, and the push rod 14 drives the detector 13 to disengage from the pulley to be tested. Finally, the tested pulleys are removed. Qualified pulleys are collected directly, while unqualified pulleys are sorted separately. The device is restored to its initial state, awaiting the next test.

[0040] 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 pulley detection device comprising a detection station (1), characterized in that: The top of the testing platform (1) is fixedly provided with a support plate, and a pressure plate (4) that can move up and down and rotate is installed on the support plate; a power mechanism that drives the pressure plate (4) to move is also installed on the support plate. A fixed cylinder (7) is fixedly installed inside the testing table (1), and the fixed cylinder (7) and the pressure plate (4) are coaxially opposite each other in the vertical direction; The fixed cylinder (7) is slidably inserted into the sliding shaft (6), and the top of the sliding shaft (6) is rotatably fitted with a conical block (5) for coaxially placing the pulley. A first spring (8) is provided inside the fixed cylinder (7) along the sliding direction of the sliding shaft (6); the top end of the first spring (8) is fixedly connected to the sliding shaft (6), and the bottom end is fixedly connected to the fixed cylinder (7); A plate (9) is provided above the testing platform (1), and the plate (9) is rotatably connected to the sliding shaft (6); a guide groove is opened on the plate (9) along the radial direction of the sliding shaft (6), and a push plate (12) is slidably installed in the guide groove; a testing mechanism for belt pulley testing is installed on the push plate (12). A transmission mechanism is provided between the testing platform (1) and the plate (9) to drive the push plate (12) to slide closer to or away from the slide shaft (6).

2. The pulley detection device according to claim 1, characterized in that: The transmission mechanism includes two fixed plates (17) fixed on the testing table (1); the push plate (12) is located between the two fixed plates (17), and a transmission groove (18) is opened on each of the two fixed plates (17), with the two transmission grooves (18) facing each other in the horizontal direction; two push shafts (16) are fixedly installed on the push plate (12), and the two push shafts (16) are coaxially opposite each other and correspond one-to-one with the two transmission grooves (18); each push shaft (16) is inserted into the corresponding transmission groove (18) and abuts against the fixed plate (17) where the corresponding transmission groove (18) is located; a second spring (11) is installed in the guide groove along the sliding direction of the push plate (12), one end of the second spring (11) is fixedly connected to the push plate (12), and the other end is fixedly connected to the plate (9).

3. The pulley detection apparatus according to claim 2, characterized by: A guide rod (10) is fixedly installed in the guide groove along the sliding direction of the push plate (12). The guide rod (10) passes through the push plate (12), and the push plate (12) and the guide rod (10) are in a limited sliding fit. The second spring (11) is sleeved on the guide rod (10).

4. The pulley detection apparatus according to claim 2, characterized by: The fixed plate (17) has a vertical clearance groove, the bottom end of which is connected to the high end of the transmission inclined groove (18) on the fixed plate (17); the push shaft (16) is limited to slidingly engaging with the clearance groove connected to the corresponding transmission inclined groove (18).

5. The pulley detection device according to claim 1, characterized in that: The detection mechanism includes a detector (13), a controller, and a buzzer; a push rod (14) is provided on the push plate (12), the push rod (14) passes through the push plate (12) along the sliding direction of the push plate (12) and is limited and slidably engaged with the push plate (12); the detector (13) is fixed at the end of the push rod (14) near the sliding shaft (6), a limit cap is fixed at the end of the push rod (14) away from the sliding shaft (6), a third spring (15) is fixed between the push plate (12) and the limit cap, and the third spring (15) is sleeved on the push rod (14); the controller and the buzzer are both fixed on the push plate (12), and the detector (13) and the buzzer are both electrically connected to the controller.

6. The pulley detection apparatus of claim 1, wherein: The power mechanism includes an electric push rod (2) and a motor (3). The electric push rod (2) is fixedly mounted on the support plate, and the motor (3) is fixedly mounted on the telescopic end of the electric push rod (2). The pressure plate (4) is coaxially fixed on the output shaft of the motor (3).

7. The pulley detection apparatus of claim 1, wherein: The small-radius axial end of the conical block (5) faces the pressure plate (4).

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