A kind of transmission shaft perpendicularity detection device

Abstract

The utility model discloses a kind of perpendicularity detection devices of transmission shaft, it is related to transmission shaft detection technical field, including first mounting bracket, adjusting mechanism is installed in first mounting bracket inside, the utility model, through the cooperation track structure of three positioning blocks of annular arrangement, realize the multi-point synchronous locking and positioning of transmission shaft, positioning block is evenly distributed in track inside, track is rotated by external handle driving gear system, in the process of rotation, cam groove structure inside track guides positioning block to contract along radial direction synchronously, complete transmission shaft equidistant surrounding type lateral locking, effectively prevent shaking and skew, ensure detection accuracy and repeatability, simultaneously, by the pre-tightening force of spring extruding block and lifting rod down pressure, carry out constant pressure to transmission shaft top, to further improve vertical stability, realize all-around stable positioning and locking in three-dimensional direction, guarantee the stability and reliability in detection process.

Description

Technical Field

[0001] This utility model relates to the field of transmission shaft testing technology, and in particular to a transmission shaft perpendicularity testing device. Background Technology

[0002] Drive shafts are key components in mechanical transmission systems, primarily used to transmit power and torque. Inspecting drive shafts is crucial, as it is an important means of ensuring their performance, safety, and reliability.

[0003] However, in existing technologies, traditional testing devices mostly use single-point support or simple limiting structures, which makes the transmission shaft prone to shaking due to center of gravity shift or external force interference during testing, resulting in fluctuations in testing data. Moreover, they can only achieve fixation in a single direction, either lateral or vertical, and cannot lock the transmission shaft in all directions in three-dimensional space. Especially in high-speed rotation or force testing scenarios, axial movement or radial displacement is prone to occur. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing technologies often use single-point support or simple limiting structures, which can cause the transmission shaft to wobble during testing due to center of gravity shift or external force interference, resulting in fluctuations in the test data. Therefore, this invention proposes a transmission shaft perpendicularity testing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a transmission shaft perpendicularity detection device, comprising a first mounting frame, an adjustment mechanism installed inside the first mounting frame, a limit mechanism installed at the top of the first mounting frame, and a clamping mechanism installed at the bottom of the first mounting frame;

[0006] The limiting mechanism includes a lifting rod, a pressing block is fixedly connected to the bottom of the lifting rod, and a limiting block is fixedly connected to the top of the lifting rod. A spring is provided above the pressing block and is sleeved on the outer surface of the lifting rod.

[0007] The clamping mechanism includes a base, three positioning blocks are slidably connected to the top of the base, and a track is rotatably connected to the inside of the base. The track is slidably connected to the bottom of the positioning blocks, and a toothed ring is fixedly connected to the bottom of the track. Three drive gears are meshed at the bottom of the toothed ring.

[0008] Preferably, the top of the lifting rod is slidably connected to the first mounting bracket.

[0009] Preferably, the adjusting mechanism includes a lead screw, with slide rods on both sides of the lead screw, and a lifting frame is threaded onto the outer surface of the lead screw.

[0010] Preferably, a second mounting bracket is fixedly connected to one end of the lifting frame, and a measuring instrument is installed on the inner side of the second mounting bracket.

[0011] Preferably, both ends of the lifting frame are slidably connected to the slide rod, and the slide rod is fixedly connected to the inner wall of the first mounting frame.

[0012] Preferably, a geared motor is mounted on the top of the first mounting bracket, and the output end of the geared motor is fixedly connected to the lead screw.

[0013] Preferably, a handle is inserted into one end of the drive gear, and the drive gear is rotatably connected to the base.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] 1. In this utility model, three positioning blocks arranged in a ring, in conjunction with a track structure, achieve multi-point synchronous locking and positioning of the drive shaft. The positioning blocks are evenly distributed on the inner side of the track. The track is rotated by an external handle driving a gear system. During the rotation, the cam groove structure inside the track guides the positioning blocks to retract synchronously in the radial direction, completing the equidistant encircling lateral locking of the drive shaft, effectively preventing shaking and skew, and ensuring detection accuracy and repeatability. At the same time, the preload of the spring pushes the squeezing block and the lifting rod down to apply constant pressure to the top of the drive shaft, thereby further improving vertical stability and achieving all-round stable positioning and locking in three dimensions, ensuring stability and reliability during the detection process.

[0016] 2. In this utility model, the output shaft drives the lead screw to rotate, thereby realizing the stable lifting and lowering of the lifting frame along the axial direction. The lead screw and the internal thread of the lifting frame provide a transmission basis. To prevent the lifting frame from tilting, a sliding rod is set to provide guidance and constraint. Even under load, the vertical balance of the structure can be ensured. The second mounting frame rises and falls with the lifting frame. The bearing measuring instrument performs verticality detection on the transmission shaft. The detection process has high positioning accuracy and repeatability. To prevent the lifting rod from becoming loose from the connection with the first mounting frame. Attached Figure Description

[0017] Figure 1 This utility model provides a schematic diagram of the overall three-dimensional structure of a drive shaft perpendicularity detection device;

[0018] Figure 2 This utility model provides a side-view three-dimensional structural diagram of a drive shaft perpendicularity detection device;

[0019] Figure 3 This utility model provides a three-dimensional structural diagram of the clamping mechanism of a drive shaft perpendicularity detection device.

[0020] Figure 4 This invention presents a three-dimensional structural diagram of a drive shaft perpendicularity detection device.

[0021] Legend: 1. First mounting frame; 2. Adjustment mechanism; 21. Gear motor; 22. Lead screw; 23. Slide rod; 24. Lifting frame; 25. Second mounting frame; 3. Limiting mechanism; 31. Lifting rod; 32. Limiting block; 33. Spring; 34. Pressing block; 4. Measuring instrument; 5. Clamping mechanism; 51. Base; 52. Handle; 53. Track; 54. Positioning block; 55. Gear ring; 56. Drive gear. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Example 1: As Figures 1-4 As shown, this utility model provides a drive shaft perpendicularity detection device, including a first mounting frame 1, an adjustment mechanism 2 installed inside the first mounting frame 1, a limit mechanism 3 installed at the top of the first mounting frame 1, and a clamping mechanism 5 installed at the bottom of the first mounting frame 1;

[0025] The limiting mechanism 3 includes a lifting rod 31, a pressing block 34 is fixedly connected to the bottom of the lifting rod 31, and a limiting block 32 is fixedly connected to the top of the lifting rod 31. A spring 33 is provided above the pressing block 34 and is sleeved on the outer surface of the lifting rod 31.

[0026] The clamping mechanism 5 includes a base 51, three positioning blocks 54 are slidably connected to the top of the base 51, and a track 53 is rotatably connected to the inner side of the base 51. The track 53 is slidably connected to the bottom of the positioning blocks 54, and a toothed ring 55 is fixedly connected to the bottom of the track 53. Three drive gears 56 are meshed with the bottom of the toothed ring 55.

[0027] The specific setup and function of this embodiment are described below. First, the drive shaft to be tested is placed horizontally between three positioning blocks 54 arranged in a ring. The positioning blocks 54 are the core components of the limiting device, evenly distributed inside the track 53 structure, providing initial support and guidance. The operator manually rotates the handle 52 located outside the device. This handle 52 is linked to the gear ring 55, and the rotational torque is transmitted to the gear ring 55 through the gear transmission mechanism, thereby driving the track 53 to rotate around its central axis. During the rotation, the track 53 has a pre-set cam groove or thrust structure inside, which contacts the guide portion of the three positioning blocks 54 and applies force synchronously in the radial or tangential direction.

[0028] Under this structure, the three positioning blocks 54 are forced to move synchronously towards the center along the predetermined path of the track 53, thereby achieving multi-point equidistant encirclement locking of the drive shaft. This synchronous linkage method can effectively prevent the drive shaft from shaking or tilting due to external disturbances during the testing process, ensuring the accuracy and repeatability of the test data.

[0029] In addition to lateral locking, to further enhance the vertical stability of the drive shaft, this structure also includes a vertical clamping and positioning mechanism. This mechanism mainly consists of a spring 33, a pressing block 34, and a lifting rod 31. The preload of the spring 33 drives the pressing block 34, located above it, to move downwards vertically. As the pressing block 34 descends, it also pulls the connected lifting rod 31 down to press it to the top of the drive shaft. This action applies axial pressure to the upper end of the drive shaft, preventing it from floating up and down during the detection process, thereby achieving precise positioning and locking of the drive shaft in three-dimensional space.

[0030] Example 2: Figure 4 As shown, the top end of the lifting rod 31 is slidably connected to the first mounting frame 1. The adjusting mechanism 2 includes a lead screw 22, with slide rods 23 on both sides of the lead screw 22, and a lifting frame 24 is threaded onto the outer surface of the lead screw 22. A second mounting frame 25 is fixedly connected to one end of the lifting frame 24, and a measuring instrument 4 is mounted inside the second mounting frame 25. Both ends of the lifting frame 24 are slidably connected to the slide rods 23, and the slide rods 23 are fixedly connected to the inner wall of the first mounting frame 1. A reduction motor 21 is mounted on the top of the first mounting frame 1, and the output end of the reduction motor 21 is fixedly connected to the lead screw 22. A handle 52 is inserted into one end of the drive gear 56, and the drive gear 56 is rotatably connected to the base 51.

[0031] The overall effect of this embodiment is that the geared motor 21, as the core driving component of the system, has its output shaft connected to the lead screw 22, transmitting torque to enable the lead screw 22 to rotate stably. Since the lead screw 22 has a threaded structure on its surface, and the inner side of the lifting frame 24 has a corresponding nut or threaded hole, the lifting frame 24 can move up and down along the axial direction of the lead screw 22 when the lead screw 22 rotates. Furthermore, to ensure posture stability during the lifting process, the lifting frame 24 also engages with the slide rod 23. The slide rod 23 is typically located on the side of the lifting path, serving as a guide and constraint, effectively preventing the lifting frame 24 from tilting or leaning during the lifting process.

[0032] Even when the lifting frame 24 moves up and down synchronously with the second mounting frame 25 under load, the overall vertical balance of the structure can be maintained. The second mounting frame 25 is used to mount the measuring instrument 4. When it rises and falls with the lifting frame 24 to a designated height, the measuring instrument 4 can perform verticality detection on the target drive shaft. The entire lifting and detection process has good positioning accuracy and repeatability, which helps to improve the accuracy and stability of the detection results.

[0033] To prevent the risk of loosening or structural separation between the lifting rod 31 and the first mounting bracket 1 during precise positioning of the drive shaft, a limiting block 32 structure is introduced. The limiting block 32 provides reliable physical obstruction when the lifting rod 31 moves to its extreme position, thereby ensuring the stability and safety of its connection.

[0034] Furthermore, when adjusting the positioning block 54, the positioning mechanism can be quickly adjusted and locked by controlling its movement along the track 53. Specifically, one end of the handle 52 is inserted into the drive gear 56. The operator rotates the handle 52 to rotate the drive gear 56, which meshes with the gear ring 55. The gear ring 55 rotates accordingly, generating radial or axial force, thereby causing the three positioning blocks 54 evenly distributed on the track 53 to move synchronously. This structure allows multiple positioning points to be adjusted in a coordinated manner, effectively improving the efficiency and consistency of the positioning operation and ensuring good stability and repeatability of the measuring device after positioning.

[0035] The device is used as follows: When inspecting the drive shaft, it is placed inside the three positioning blocks 54. Turning the handle 52 applies a force to the gear ring 55, causing the track 53 to rotate. During this process, the track 53 simultaneously applies a force to the three positioning blocks 54, causing them to move synchronously, thereby locking the drive shaft and preventing skewing during inspection.

[0036] In addition, the elasticity of the spring 33 can push the pressing block 34 downward, while driving the lifting rod 31 to move synchronously, thereby positioning the top of the drive shaft and further enhancing the locking stability.

[0037] The geared motor 21 drives the lead screw 22 to rotate, causing the lifting frame 24 on the surface of the lead screw 22 to move up and down. The lifting frame 24 slides on the surface of the slide bar 23 to ensure that the lifting frame 24 does not tilt when it drives the second mounting frame 25 to move up and down, so that the measuring instrument 4 can perform verticality detection on the transmission shaft.

[0038] During the positioning process of the drive shaft, the limiting block 32 can prevent the lifting rod 31 from disengaging from the first mounting bracket 1. When controlling the movement of the positioning block 54, one end of the handle 52 is inserted into the drive gear 56, and rotating the handle 52 will apply a force to the gear ring 55, so that the track 53 applies a force to the three positioning blocks 54 at the same time.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A drive shaft perpendicularity detection device, comprising a first mounting bracket (1), wherein an adjustment mechanism (2) is mounted on the inner side of the first mounting bracket (1), characterized in that: The first mounting bracket (1) has a limiting mechanism (3) installed at its top and a clamping mechanism (5) installed at its bottom. The limiting mechanism (3) includes a lifting rod (31), a pressing block (34) is fixedly connected to the bottom of the lifting rod (31), and a limiting block (32) is fixedly connected to the top of the lifting rod (31). A spring (33) is provided above the pressing block (34), and the spring (33) is sleeved on the outer surface of the lifting rod (31). The clamping mechanism (5) includes a base (51), three positioning blocks (54) are slidably connected to the top of the base (51), and a track (53) is rotatably connected to the inner side of the base (51). The track (53) is slidably connected to the bottom of the positioning blocks (54), and a toothed ring (55) is fixedly connected to the bottom of the track (53). Three drive gears (56) are meshed with the bottom of the toothed ring (55).

2. The perpendicularity detection device for a drive shaft according to claim 1, characterized by: The top end of the lifting rod (31) is slidably connected to the first mounting bracket (1).

3. The perpendicularity detection device for a drive shaft according to claim 1, characterized by: The adjustment mechanism (2) includes a lead screw (22), and slide rods (23) are provided on both sides of the lead screw (22). A lifting frame (24) is threadedly connected to the outer surface of the lead screw (22).

4. The perpendicularity detection device for a drive shaft according to claim 3, characterized in that: The lifting frame (24) is fixedly connected to a second mounting frame (25) at one end, and a measuring instrument (4) is installed on the inner side of the second mounting frame (25).

5. A shaft perpendicularity detection device according to claim 4, characterized in that: Both ends of the lifting frame (24) are slidably connected to the slide rod (23), and the slide rod (23) is fixedly connected to the inner wall of the first mounting frame (1).

6. The drive shaft perpendicularity detection device according to claim 1, characterized in that: The first mounting bracket (1) is equipped with a geared motor (21) on top, and the output end of the geared motor (21) is fixedly connected to the lead screw (22).

7. The verticality detection device of a propeller shaft according to claim 1, characterized in that: One end of the drive gear (56) is connected to a handle (52), and the drive gear (56) is rotatably connected to the base (51).

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