A fixing mechanism of a gear detection platform

Abstract

The utility model discloses a kind of fixing mechanism of gear detection platform, it is related to gear detection equipment technical field, including detection platform body, the detection platform body top end is fixedly connected with fixed seat, installation shaft is provided on the fixed seat, support disc is fixed on the installation shaft outside, the installation shaft outside is equipped with the gear to be detected, the protection cylinder is lifted and set in the gear to be detected upper, the fixed plate is fixedly connected in the protection cylinder, the side of the fixed plate towards gear to be detected is provided with brush, in the process of gear rotation, if gear outer circle face exists protrusion and other size defects, protrusion part will contact with the silica gel pad of connecting plate inside and produce collision, the collision signal detected by collision sensor is converted into electric signal and is transmitted to controller, controller immediately controls alarm to issue sound and light alarm signal, simultaneously control equipment pause operation, it is convenient for operator to handle in time.

Description

Technical Field

[0001] This utility model relates to the field of gear testing equipment technology, and in particular to a fixing mechanism for a gear testing table. Background Technology

[0002] As a core component of mechanical transmission systems, the machining precision of gears directly determines transmission efficiency, operational stability, and equipment lifespan. After gear production and machining are completed, key indicators such as appearance dimensions and rotational performance must be tested using specialized testing equipment to ensure that the product quality meets usage requirements.

[0003] The existing gear testing station's fixing mechanism only has a single fixing function and cannot clean the gears while testing. Iron filings, dust, and other impurities attached to the gear surface not only affect the testing accuracy but may also cause wear to the testing components during the testing process.

[0004] Therefore, it is necessary to propose a fixing mechanism for the gear testing platform to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a fixing mechanism for a gear testing table, so as to solve the problem that the fixing mechanism of the existing gear testing table only has a single fixing function and cannot clean the gears at the same time as testing. The iron filings, dust and other impurities attached to the gear surface not only affect the testing accuracy, but may also cause wear problems to the testing components during the testing process.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fixing mechanism for a gear testing platform, comprising a testing platform body, a fixing seat fixedly connected to the top of the testing platform body, an installation shaft provided on the fixing seat, a support plate fixedly fixed to the outside of the installation shaft, a gear to be tested sleeved on the outside of the installation shaft, a protective cylinder raised and lowered above the gear to be tested, a fixing plate fixedly connected inside the protective cylinder, a brush provided on the side of the fixing plate facing the gear to be tested, a connecting plate fixedly connected to the bottom of the fixing plate, and a testing gap left between the connecting plate and the outside of the gear to be tested.

[0007] Preferably, a collision sensor is provided on the connecting plate, an alarm is provided on the outside of the protective cylinder, and a silicone pad is fixedly connected to the side of the connecting plate near the gear to be tested.

[0008] Preferably, a support frame is fixedly connected to one side of the top of the testing platform body, a lead screw is rotatably connected inside the support frame along the height direction, a slider is threaded on the outside of the lead screw, and the slider and the protective cylinder are fixedly connected. A servo motor is fixedly connected to the top of the support frame, and the drive shaft of the servo motor is fixedly connected to one end of the lead screw.

[0009] Preferably, a vacuum cleaner is fixedly connected to the top of the protective cylinder, and the suction port of the vacuum cleaner extends into the interior of the protective cylinder.

[0010] Preferably, a turntable is rotatably connected to the top of the fixed base, and multiple air vents are opened on the top of the turntable. A fan is fixedly connected inside the testing platform body, and the air outlet of the fan is rotatably connected through a pipe and the air vents.

[0011] Preferably, the top end of the mounting shaft is a threaded end, the bottom of the gear to be tested and the top end of the support plate are in contact, a nut is threaded on the outer side of the threaded end, the nut is threaded on the threaded end and the nut is pressed against the gear to be tested.

[0012] The technical effects and advantages of this utility model are as follows: 1. During gear rotation, if there are dimensional defects such as protrusions on the outer surface of the gear, the protrusions will contact and collide with the silicone pad on the inner side of the connecting plate. The collision sensor will convert the detected collision signal into an electrical signal and transmit it to the controller. The controller will immediately control the alarm to issue an audible and visual alarm signal and simultaneously control the equipment to stop running, so that the operator can handle it in time. If there are no obvious defects on the outer surface of the gear, the servo motor will continue to drive the protective cylinder to descend until the brush on the fixed plate makes close contact with the outer surface of the gear, which can play a cleaning role.

[0013] 2. During the cleaning and inspection process, the blower and vacuum cleaner are started. The air generated by the blower is delivered to the air vent on the turntable through the connecting pipe. The air vent blows the air upwards onto the gear surface. In conjunction with the rotation of the gear, it can lift up iron filings, dust and other impurities from the gear surface and the tooth groove.

[0014] 3. During the upward blowing of the wind and the rotation of the gears, if there are problems such as poor dynamic balance of the gears, it will cause radial runout of the gears when rotating, which will cause unstable interaction between the gears and the airflow. By observing the rotation state of the gears or by using the data fed back by the speed sensor, the rotation stability of the gears can be judged intuitively, and the rotation performance of the gears can be tested. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the fixing mechanism of the gear testing platform of this utility model.

[0016] Figure 2 This is a structural schematic diagram of the mounting shaft and support plate of this utility model.

[0017] Figure 3 This utility model Figure 2 Enlarged diagram of point A in the middle.

[0018] In the diagram: 1. Testing platform body; 2. Fixing base; 3. Turntable; 4. Stand; 5. Protective cylinder; 6. Vacuum cleaner; 7. Mounting shaft; 8. Support plate; 9. Threaded end; 10. Nut; 11. Fixing plate; 12. Brush; 13. Connecting plate; 14. Collision sensor; 15. Silicone pad; 16. Air outlet; 17. Fan. Detailed Implementation

[0019] This utility model provides, for example Figure 1 - Figure 3 The fixed mechanism of a gear testing table shown includes a testing table body 1, a fixed base 2 fixedly connected to the top of the testing table body 1, a mounting shaft 7 provided on the fixed base 2, a support plate 8 fixed to the outside of the mounting shaft 7, and a gear to be tested sleeved on the outside of the mounting shaft 7. The main body 1 of the testing platform is made of cast iron, which has good rigidity and shock absorption performance. The top of the main body 1 is fixedly connected to the fixed seat 2 by bolts. The fixed seat 2 is a cylindrical structure. The top of the fixed seat 2 is rotatably connected to the turntable 3 by bearing. The bearing can withstand axial load, ensuring that the turntable 3 rotates smoothly and is not prone to axial displacement. The diameter of the mounting shaft 7 is determined according to the inner hole size of the gear to be tested. The support plate 8 is fixedly sleeved on the outside of the mounting shaft 7. The support plate 8 and the mounting shaft 7 are an integral structure.

[0020] The top of the mounting shaft 7 is set as a threaded end 9. The bottom of the gear to be tested fits with the top of the support plate 8. A nut 10 is threaded on the outer side of the threaded end 9. The nut 10 is threaded on the threaded end 9 and pressed against the surface of the gear to be tested. A wing nut 10 is threaded on the outer side of the threaded end 9. By tightening the nut 10, the gear to be tested can be pressed and fixed on the support plate 8.

[0021] A support frame 4 is fixedly connected to one side of the top of the test bench body 1. A lead screw is rotatably connected inside the support frame 4 along the height direction. A slider is threaded on the outside of the lead screw. The slider and the protective cylinder 5 are fixedly connected. A servo motor is fixedly connected to the top of the upright 4. The drive shaft of the servo motor is fixedly connected to one end of the lead screw. A rubber shock-absorbing pad is provided between the motor base and the crossbeam. The drive shaft of the servo motor is fixedly connected to the top of the lead screw through a flexible coupling.

[0022] A protective cylinder 5 is installed above the gear to be tested. A fixing plate 11 is fixedly connected inside the protective cylinder 5. A brush 12 is installed on the side of the fixing plate 11 facing the gear to be tested. A connecting plate 13 is fixedly connected to the bottom of the fixing plate 11. A test gap is left between the connecting plate 13 and the outer side of the gear to be tested.

[0023] A collision sensor 14 is installed on the connecting plate 13, an alarm is installed on the outside of the protective cylinder 5, a silicone pad 15 is fixedly connected to the side of the connecting plate 13 near the gear to be tested, and an alarm is fixed to the outside of the protective cylinder 5 by a bracket.

[0024] A vacuum cleaner 6 is fixedly connected to the top of the protective cylinder 5, and the suction port of the vacuum cleaner 6 extends into the interior of the protective cylinder 5.

[0025] The top of the fixed base 2 is rotatably connected to the turntable 3, and the top of the turntable 3 has multiple air vents 16. The inside of the testing table body 1 is fixedly connected to the fan 17. The air outlet of the fan 17 is connected to the connecting pipe through a rotary joint. The top of the connecting pipe is rotatably connected to the air inlet at the bottom of the turntable 3.

[0026] It should be noted that the main body 1 of the testing platform is also equipped with a PLC controller, model S7-200. The controller is electrically connected to the collision sensor 14, the alarm, the servo motor, the vacuum cleaner 6 and the fan 17. The front side of the main body 1 of the testing platform is equipped with an operation panel, which has a start button, a stop button, a sensitivity adjustment knob and an emergency stop button.

[0027] Working principle: The gear to be tested is sleeved on the mounting shaft 7, so that the bottom of the gear is tightly fitted with the rubber anti-slip pad at the top of the support plate 8. The axial fixation of the gear to be tested is achieved by the clamping action of the nut 10 and the support plate 8, preventing the gear from axially moving during the testing process.

[0028] When the device is started via the control panel, the controller first controls the servo motor to start. The drive shaft of the servo motor drives the lead screw to rotate. Since the slider is threaded with the lead screw and is restricted by the guide groove of the upright 4, the slider will move downward along the axis of the lead screw, thereby driving the protective cylinder 5 to descend synchronously. The operator can preset the descent stroke of the protective cylinder 5 through the control panel. The servo motor provides real-time feedback of the rotation angle through the encoder to ensure that the protective cylinder 5 descends to the preset position.

[0029] During the descent of the protective cylinder 5, the connecting plate 13 is first driven to descend to a height corresponding to the outer diameter of the gear to be tested. At this time, a preset detection gap is maintained between the connecting plate 13 and the outer side of the gear.

[0030] Subsequently, the controller starts the drive mechanism of turntable 3 (the drive mechanism of turntable 3 can be a stepper motor or a servo motor, which drives turntable 3 to rotate through gear transmission). Turntable 3 drives the mounting shaft 7 and the gear to be tested to rotate synchronously. The rotation speed can be adjusted according to the testing requirements.

[0031] During gear rotation, if there are dimensional defects such as protrusions on the outer surface of the gear, the protruding part will contact and collide with the silicone pad 15 on the inner side of the connecting plate 13. The collision sensor 14 will convert the detected collision signal into an electrical signal and transmit it to the controller. The controller will immediately control the alarm to issue an audible and visual alarm signal and at the same time control the equipment to stop running, so that the operator can handle it in time.

[0032] If there are no obvious defects on the outer surface of the gear, the servo motor will continue to drive the protective cylinder 5 to descend until the brush 12 on the fixed plate 11 is in close contact with the outer surface of the gear.

[0033] At this time, the controller starts the fan 17 and the vacuum cleaner 6. The air generated by the fan 17 is delivered to the air outlet 16 on the turntable 3 through the connecting pipe. The air outlet 16 blows the air upwards onto the gear surface. With the rotation of the gear, it can lift up iron filings, dust and other impurities on the gear surface and in the gear groove.

[0034] At the same time, the vacuum cleaner 6 generates negative pressure through the suction port, sucking the raised impurities into the dust collection bag inside the vacuum cleaner 6, thus achieving synchronous cleaning of the gears.

[0035] During the upward blowing of wind and the rotation of gears, if there are problems such as poor dynamic balance of the gears, it will cause radial runout of the gears when rotating, which will lead to unstable interaction between the gears and the airflow. By observing the rotation state of the gears or by using the data fed back by the speed sensor, the rotational stability of the gears can be judged intuitively, and the rotational performance of the gears can be tested.

[0036] It should be noted that the collision sensor 14 is model PT124G-111, and the alarm is model LTE-1101J, which uses an audible and visual alarm method.

Claims

1. A fixing mechanism for a gear testing table, comprising a testing table body (1), characterized in that: The top of the testing platform body (1) is fixedly connected to a fixed seat (2), and a mounting shaft (7) is provided on the fixed seat (2). A support plate (8) is fixed on the outside of the mounting shaft (7). A gear to be tested is sleeved on the outside of the mounting shaft (7). A protective cylinder (5) is raised and lowered above the gear to be tested. A fixed plate (11) is fixedly connected inside the protective cylinder (5). A brush (12) is provided on the side of the fixed plate (11) facing the gear to be tested. A connecting plate (13) is fixedly connected to the bottom of the fixed plate (11). A testing gap is left between the connecting plate (13) and the outside of the gear to be tested.

2. The fixing mechanism of a gear testing platform according to claim 1, characterized in that: A collision sensor (14) is provided on the connecting plate (13), an alarm is provided on the outside of the protective cylinder (5), and a silicone pad (15) is fixedly connected to the side of the connecting plate (13) near the gear to be tested.

3. The fixing mechanism of a gear testing platform according to claim 1, characterized in that: A stand (4) is fixedly connected to one side of the top of the test platform body (1). A lead screw is rotatably connected inside the stand (4) along the height direction. A slider is threaded on the outside of the lead screw. The slider and the protective cylinder (5) are fixedly connected. A servo motor is fixedly connected to the top of the stand (4), and the drive shaft of the servo motor is fixedly connected to one end of the lead screw.

4. The fixing mechanism of a gear testing platform according to claim 1, characterized in that: A vacuum cleaner (6) is fixedly connected to the top of the protective cylinder (5), and the suction port of the vacuum cleaner (6) extends into the interior of the protective cylinder (5).

5. The fixing mechanism of a gear testing platform according to claim 1, characterized in that: The top of the fixed base (2) is rotatably connected to a turntable (3), and the top of the turntable (3) is provided with multiple air vents (16). The inside of the testing platform body (1) is fixedly connected to a fan (17), and the air outlet of the fan (17) is rotatably connected through a pipe and the air vents (16).

6. The fixing mechanism of a gear testing platform according to claim 1, characterized in that: The top end of the mounting shaft (7) is set as a threaded end (9), the bottom of the gear to be tested and the top end of the support plate (8) are fitted together, and a nut (10) is threaded on the outside of the threaded end (9). The nut (10) is threadedly installed on the threaded end (9) and pressed against the surface of the gear to be tested.

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