Detection instrument for automobile transmission shaft

Abstract

The invention relates to the technical field of transmission shaft detection, in particular to a detection instrument for an automobile transmission shaft, which comprises a detection base, the top of the detection base is fixedly connected with a movable connecting seat, the top of the movable connecting seat is provided with a transversely arranged moving groove, and a mounting groove is arranged below the detection base. A mounting groove is formed in the detection base, a lead screw is arranged in the mounting groove, a lead screw nut is mounted outside the lead screw in a matched mode, a control sliding block is fixedly connected to the outside of the lead screw nut, a limiting frame is fixedly connected to one side of the detection base, and communicating sliding grooves are formed in the limiting frame and the detection base; the control sliding block is slidably connected into the sliding groove, the bottom of the control sliding block is fixedly connected with a sensor mounting block, a sensor mounting groove is formed in the bottom of the sensor mounting block, and a laser distance measuring sensor is mounted in the sensor mounting groove.

Description

Technical Field

[0001] The invention relates to the technical field of transmission shaft detection, in particular to a detection instrument for automobile transmission shafts. Background Art

[0002] The drive shaft is a part of the automobile. It is a high-speed, low-support rotating body. It is an important component for transmitting power in the automobile transmission system. Its function is to transmit the power of the engine to the wheels together with the gearbox and drive axle to generate driving force for the car. As such an important component, the drive shaft needs to be tested before leaving the factory to detect the concentricity of the drive shaft.

[0003] At present, a Chinese patent with publication number CN114993153A discloses a transmission shaft detection device, which includes a support frame, a fixed seat fixed to the support frame, a sliding seat slidably arranged on the support frame along the axial direction, and at least one group of bridge seats slidably arranged on the support frame along the axial direction and located between the fixed seat and the sliding seat; some of the bridge seats are provided with a first roller and a second roller that slide relative to each other along the radial direction; after the first roller and the second roller clamp the transmission shaft along the radial direction, the sliding seat and the fixed seat cooperate to support the transmission shaft along the axial direction and make the limit pins provided by the two pass through the connecting hole of the flange fork, the sliding seat and the fixed seat can reliably support transmission shafts of different lengths along the axial direction, and the first roller and the second roller of each group of bridge seats can reliably support transmission shafts of different outer diameters along the radial direction.

[0004] Although this transmission shaft detection device can improve the versatility and detection accuracy of the detection device, this detection device is contact-type. During the transportation and detection of the transmission shaft, the contact-type detection process can easily cause the transmission shaft to deform after detection due to factors such as equipment. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a detection instrument for an automobile transmission shaft, which uses a non-contact detection method to detect the transmission shaft.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A detection instrument for an automobile transmission shaft comprises a detection base, a movable connection base is fixedly connected to the top of the detection base, a movable groove opened laterally is provided on the top of the movable connection base, a mounting groove is provided below the detection base, a screw rod is provided inside the mounting groove, a screw rod nut is mounted on the outside of the screw rod, a control slider is fixedly connected to the outside of the screw rod nut, a limiting frame is fixedly connected to one side of the detection base, a sliding groove communicating with the limiting frame and the inside of the detection base is provided, the control slider is slidably connected to the inside of the sliding groove, a sensor mounting block is fixedly connected to the bottom of the control slider, a sensor mounting groove is provided at the bottom of the sensor mounting block, a laser ranging sensor is installed inside the sensor mounting groove.

[0007] Furthermore, a connecting plate is fixedly connected to one side of the detection base, and the connecting plate is arranged above the limit frame. An end of the connecting plate away from the detection base is fixedly connected to a mounting plate, and one end of the mounting plate screw is installed inside the mounting plate through a bearing. The other end of the detection base is fixedly connected to a connecting column, and one end of the connecting column is fixedly connected to a support plate, and the other end of the screw is installed inside the support plate through a bearing.

[0008] Furthermore, a positioning column is fixedly connected between the mounting plate and the detection base, and two sides of the sensor mounting block are slidably connected to the outside of the positioning column.

[0009] Furthermore, a motor is installed on one side of the screw rod, and the motor is fixed on the back side of the mounting plate.

[0010] Furthermore, a fixing plate is fixedly connected to one end of the detection base close to the control slider, a buffer positioning plate is fixedly connected to the inner side of the fixing plate, and positioning grooves cooperating with the buffer positioning plate are provided on both sides of the sensor mounting block.

[0011] In summary, the present invention has the following beneficial effects: The present invention can move along the outer surface of the transmission shaft, use a laser rangefinder, cooperate with the overall movement of the detection base, continuously measure along the outer surface of the transmission shaft, and judge the concentricity of the transmission shaft by the detected distance value. The detection efficiency is high, the entire detection process does not require contact, and will not affect the transmission shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application, but do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is an oblique view of the present invention; Figure 2 It is a schematic structural diagram of the bottom of the present invention; Figure 3 It is a side view of the present invention.

[0013] In the figure, 1. detection base; 2. mobile connecting base; 3. moving slot; 4. mounting slot; 5. lead screw; 6. lead screw nut; 7. control slider; 8. limit frame; 9. sliding slot; 10. sensor mounting block; 11. sensor mounting slot; 12. laser ranging sensor; 13. connecting plate; 14. mounting plate; 15. connecting column; 16. support plate; 17. positioning column; 18. motor; 19. fixing plate; 20. buffer positioning plate; 21. positioning slot. DETAILED DESCRIPTION

[0014] The above and other technical contents, features and effects of the present invention are described in detail below with reference to the attached Figure 1 To Attachment Figure 3 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.

[0015] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0016] Embodiment 1: A detection instrument for automobile transmission shaft, comprising a detection base 1, a movable connection base 2 is fixedly connected to the top of the detection base 1, a movable groove 3 opened laterally is provided on the top of the movable connection base 2, a mounting groove 4 is provided at the bottom of the detection base 1, a screw rod 5 is provided inside the mounting groove 4, a motor 18 is installed on one side of the screw rod 5, a screw nut 6 is installed on the outside of the screw rod 5, a control slider 7 is fixedly connected to the outside of the screw nut 6, a limit frame 8 is fixedly connected to one side of the detection base 1, a sliding groove 9 communicating with the limit frame 8 and the inside of the detection base 1 is provided, the control slider 7 is slidably connected to the inside of the sliding groove 9, a sensor mounting block 10 is fixedly connected to the bottom of the control slider 7, a sensor mounting groove 11 is provided at the bottom of the sensor mounting block 10, a laser ranging sensor 12 is installed inside the sensor mounting groove 11.

[0017] A connecting plate 13 is fixedly connected to one side of the detection base 1, and the connecting plate 13 is arranged above the limit frame 8. An end of the connecting plate 13 away from the detection base 1 is fixedly connected to a mounting plate 14, and one end of the screw rod 5 of the mounting plate 14 is installed inside the mounting plate 14 through a bearing. The motor 18 is fixed on the back of the mounting plate 14, and the other end of the detection base 1 is fixedly connected to a connecting column 15, and one end of the connecting column 15 is fixedly connected to a support plate 16, and the other end of the screw rod 5 is installed inside the support plate 16 through a bearing.

[0018] A positioning column 17 is fixedly connected between the mounting plate 14 and the detection base 1 , and two sides of the sensor mounting block 10 are slidably connected to the outside of the positioning column 17 .

[0019] A fixing plate 19 is fixedly connected to one end of the detection base 1 close to the control slider 7 , a buffer positioning plate 20 is fixedly connected to the inner side of the fixing plate 19 , and positioning grooves 21 cooperating with the buffer positioning plate 20 are provided on both sides of the sensor mounting block 10 .

[0020] In the implementation manner of the present invention, the instrument is mainly used to detect the concentricity of the transmission shaft. When working, the instrument is placed parallel to the transmission shaft. The movable connecting seat 2 and the connecting groove on the top of the detection base 1 are used to connect with an external driver to control the entire instrument to move along the outer surface of the transmission shaft. The main part of the detection is the laser ranging sensor 12. Before measurement, the motor 18 rotates by controlling the screw rod 5, thereby driving the control slider 7 and the sensor mounting block 10 to move. The sensor mounting block 10 drives the laser ranging sensor 12 to move forward until the positioning groove 21 on the sensor mounting block 10 matches the buffer positioning piece 20 on the detection base 1. Subsequently, the laser ranging sensor 12 is fixed at this position. During the movement of the entire instrument along the outer surface of the transmission shaft, the laser ranging sensor 12 continuously detects the distance from itself to the surface of the steel pipe. If the difference in the distance change is greater than a certain range, it means that there is a problem with the concentricity of the transmission shaft and the current transmission shaft does not meet the specifications.

[0021] The above is a further detailed description of the present invention in combination with a specific implementation method, and it cannot be determined that the specific implementation of the present invention is limited to this; for technical personnel in the technical field to which the present invention belongs and related technical fields, based on the technical solution of the present invention, the expansion and replacement of operating methods and data should all fall within the protection scope of the present invention.

Claims

1. A testing instrument for automobile transmission shaft, comprising a testing base (1), characterized in that: The top of the detection base (1) is fixedly connected to a movable connection base (2), the top of the movable connection base (2) is provided with a movable groove (3) opened transversely, the bottom of the detection base (1) is provided with a mounting groove (4), the inside of the mounting groove (4) is provided with a screw rod (5), the outside of the screw rod (5) is matched with a screw rod nut (6), the outside of the screw rod nut (6) is fixedly connected to a control slider (7), one side of the detection base (1) is fixedly connected to a limit frame (8), the limit frame (8) and the inside of the detection base (1) are provided with a sliding groove (9) connected, the control slider (7) is slidably connected to the inside of the sliding groove (9), the bottom of the control slider (7) is fixedly connected to a sensor mounting block (10), the bottom of the sensor mounting block (10) is provided with a sensor mounting groove (11), and the inside of the sensor mounting groove (11) is provided with a laser distance sensor (12).

2. The detection instrument for automobile transmission shaft according to claim 1, characterized in that: A connecting plate (13) is fixedly connected to one side of the detection base (1), and the connecting plate (13) is arranged at an upper position of the limit frame (8). An end of the connecting plate (13) away from the detection base (1) is fixedly connected to a mounting plate (14), and one end of the screw rod (5) of the mounting plate (14) is mounted inside the mounting plate (14) via a bearing. A connecting column (15) is fixedly connected to the other end of the detection base (1), and one end of the connecting column (15) is fixedly connected to a support plate (16), and the other end of the screw rod (5) is mounted inside the support plate (16) via a bearing.

3. The detection instrument for automobile transmission shaft according to claim 2, characterized in that: A positioning column (17) is fixedly connected between the mounting plate (14) and the detection base (1), and two sides of the sensor mounting block (10) are slidably connected to the outside of the positioning column (17).

4. The detection instrument for automobile transmission shaft according to claim 3, characterized in that: A motor (18) is mounted on one side of the screw rod (5), and the motor (18) is fixed on the back side of the mounting plate (14).

5. The detection instrument for automobile transmission shaft according to claim 4, characterized in that: A fixing plate (19) is fixedly connected to one end of the detection base (1) that is close to the control slide block (7), a buffer positioning plate (20) is fixedly connected to the inner side of the fixing plate (19), and positioning grooves (21) that cooperate with the buffer positioning plate (20) are provided on both sides of the sensor mounting block (10).

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