Length measuring instrument for cross shaft universal joint

Abstract

The utility model relates to the technical field of cross shaft universal joint length measuring instruments, and discloses a cross shaft universal joint length measuring instrument which comprises a machine frame, sliding seats are installed on the two sides of the top end of the machine frame, and a probe is installed at one end of each sliding seat. The placing table is installed in the center of the top end of the rack and located between the sliding seats on the two sides, a base is arranged at the bottom end of the placing table, a rotating assembly is arranged in the base, and the placing table is rotationally adjusted through the rotating assembly; and the turntable is mounted on the outer surface of the front end of the rack. By arranging the rotating assembly at the bottom end of the placing table, after the two ends of the cross shaft universal joint are measured, limiting of the rotating table can be relieved firstly, the placing table can rotate along the rotating table to adjust the direction, it is avoided that time is spent on making the two ends of the cross shaft universal joint correspond to a probe again, and after adjustment is completed, the rotating table is limited and fixed through a limiting rod; and the stability during measurement is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of cross-axis universal joint length measuring instruments, specifically a cross-axis universal joint length measuring instrument. Background Technology

[0002] A length measuring instrument is a length measuring instrument with a length reference and a small measuring range (usually 100mm). It is used for absolute length measurement and is widely used in metrology rooms of enterprises in the machinery manufacturing, tool, measuring instrument manufacturing and instrument manufacturing industries, as well as professional metrology and certification departments at all levels. After the universal joint is produced, the length of the universal joint needs to be measured by a length measuring instrument.

[0003] For example, Chinese patent CN221527610U discloses a grating-type universal length measuring instrument, which includes a grating-type length measuring instrument body. A slide rail is mounted on the grating-type length measuring instrument body, and two movable seats are slidably mounted on the slide rail. Each movable seat is equipped with a measuring head, and the measuring head is equipped with a cleaning component for cleaning dirt from the measuring head. This utility model uses a rotating cylinder and a fixed cylinder. As the rotating cylinder rotates, a cloth on the inner wall of the rotating cylinder wipes and cleans the outer side of the measuring head, removing dirt. The measuring head is cleaned before each measurement, ensuring measurement accuracy and reliability. It eliminates the need for manual cleaning by staff, making it more convenient. However, traditional universal joint length measuring instruments require changing the direction of the universal joint after measuring both ends of the universal joint to measure the other two ends. Changing the direction of the universal joint requires time to align the probes at the other two ends, greatly reducing measurement efficiency. Therefore, this universal joint length measuring instrument is proposed to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a universal joint length measuring instrument with advantages such as rapid steering for length measurement in different directions, thus solving the problem of traditional methods requiring manual steering of the universal joint cross shaft for measurement.

[0006] (II) Technical Solution

[0007] To achieve the aforementioned goal of rapid steering and length measurement in different directions, this utility model provides the following technical solution: a cross-axis universal joint length measuring instrument, comprising:

[0008] A frame, wherein slides are mounted on both sides of the top of the frame, and a probe is mounted on one end of each slide;

[0009] The mounting platform is installed at the top center of the frame and is located between the slides on both sides. The bottom of the mounting platform is provided with a base, and the base is provided with a rotating component. The mounting platform can be rotated and adjusted by the rotating component.

[0010] A turntable is installed on the front outer surface of the frame. Inside the frame, at one end of the turntable, a lifting assembly is provided to adjust the height of the platform.

[0011] Preferably, a slide rail is fixedly installed at the top of the frame below the slide block, and the bottom of the slide block is slidably connected to the slide rail. The slide blocks on both sides are slid along the slide rail until one end of the probe contacts both ends of the universal joint, thereby measuring the length of the universal joint.

[0012] Preferably, the rotating assembly includes a turntable rotatably installed inside the base, and the top of the turntable is fixedly connected to the mounting platform, so that the mounting platform can be rotated and adjusted along the turntable, avoiding the need to spend time again aligning the two ends of the cross-shaped universal joint with the probe.

[0013] Preferably, a limiting rod is inserted into one side of the base, and a plurality of limiting grooves matching one end of the limiting rod are opened on the outer surface of the turntable. A convex ring is fixedly installed on the outer surface of the limiting rod, and a return spring is sleeved on one side of the convex ring on the outer surface of the limiting rod. Pulling the limiting rod on the base outward causes one end of the limiting rod to disengage from the limiting groove of the turntable, releasing the limiting of the turntable. During the outward pulling of the limiting rod, the convex ring will compress the return spring.

[0014] Preferably, the lifting assembly includes a first bevel gear fixedly installed at one end of the turntable, a second bevel gear meshing with one side of the first bevel gear, a screw fixedly installed at the top of the second bevel gear, a lifting rod sleeved on the outer surface of the screw, and the lifting rod being threadedly connected to the screw. The top of the lifting rod is fixedly connected to the bottom of the base. Rotating the turntable on the surface of the frame drives the first bevel gear to rotate, and then the second bevel gear drives the upper screw to rotate. The screw is threadedly connected to the lifting rod, thereby driving the platform to rise and adjust through the lifting rod.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a cross-axis universal joint length measuring instrument, which has the following beneficial effects:

[0017] By installing a rotating component at the bottom of the mounting platform, after measuring both ends of the universal joint, the limit on the turntable can be released first, allowing the mounting platform to rotate and adjust its direction along the turntable. This avoids spending time aligning both ends of the universal joint with the probe again. After adjustment, the turntable is fixed by the limit rod, increasing the stability during measurement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation structure of the workbench of this utility model;

[0020] Figure 3 This is a schematic diagram of the lifting component structure of this utility model;

[0021] Figure 4 This is a cross-sectional view of the base of this utility model.

[0022] In the diagram: 1. Frame; 11. Slide rail; 12. Slide block; 13. Probe; 2. Mounting platform; 21. Base; 22. Turntable; 23. Limiting groove; 24. Limiting rod; 25. Return spring; 26. Convex ring; 3. Turntable; 31. First bevel gear; 32. Second bevel gear; 33. Screw; 34. Lifting rod. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-4 This utility model provides the following technical solution: a cross-axis universal joint length measuring instrument, comprising:

[0025] In this embodiment, a frame 1 is provided, and slide blocks 12 are installed on both sides of the top of the frame 1. A probe 13 is installed at one end of the slide block 12. A slide rail 11 is fixedly installed at the top of the frame 1 below the slide block 12, and the bottom end of the slide block 12 is slidably connected to the slide rail 11. The slide blocks 12 on both sides are slid along the slide rail 11 until one end of the probe 13 contacts both ends of the universal joint, thereby measuring the length of the universal joint.

[0026] In this example, the mounting platform 2 is installed at the top center of the frame 1, and the mounting platform 2 is located between the slides 12 on both sides. The bottom end of the mounting platform 2 is provided with a base 21, and the base 21 is provided with a rotating assembly. The mounting platform 2 is rotated and adjusted by the rotating assembly. The rotating assembly includes a turntable 22 rotatably installed inside the base 21, and the top end of the turntable 22 is fixedly connected to the mounting platform 2, so that the mounting platform 2 can be rotated and adjusted along the turntable 22, avoiding the need to spend time again aligning the two ends of the cross shaft universal joint with the probe 13.

[0027] In this configuration, a limiting rod 24 is inserted into one side of the base 21, and a plurality of limiting grooves 23 matching one end of the limiting rod 24 are opened on the outer surface of the turntable 22. A convex ring 26 is fixedly installed on the outer surface of the limiting rod 24, and a return spring 25 is sleeved on one side of the convex ring 26 on the outer surface of the limiting rod 24. When the limiting rod 24 on the base 21 is pulled outward, one end of the limiting rod 24 is disengaged from the limiting groove 23 of the turntable 22, thus releasing the limiting of the turntable 22. During the outward pulling of the limiting rod 24, the convex ring 26 will squeeze the return spring 25.

[0028] In this example, the turntable 3 is installed on the front outer surface of the frame 1, and a lifting assembly is provided inside the frame 1 at one end of the turntable 3. The height of the platform 2 is adjusted by lifting the turntable 3 through the lifting assembly.

[0029] The lifting assembly includes a first bevel gear 31 fixedly installed at one end of the turntable 3. A second bevel gear 32 is meshed with one side of the first bevel gear 31. A screw 33 is fixedly installed at the top of the second bevel gear 32. A lifting rod 34 is sleeved on the outer surface of the screw 33 and is threadedly connected to the screw 33. The top of the lifting rod 34 is fixedly connected to the bottom of the base 21. Rotating the turntable 3 on the surface of the frame 1 drives the first bevel gear 31 to rotate, and then the second bevel gear 32 drives the upper screw 33 to rotate. The screw 33 is threadedly connected to the lifting rod 34, thereby driving the platform 2 to rise and adjust through the lifting rod 34.

[0030] The working principle of this embodiment is as follows:

[0031] During measurement, first adjust the height of the mounting platform 2 according to the specifications of the universal joint so that the height of the universal joint corresponds to the height of the probes on both sides. When adjusting the height, the turntable 3 on the surface of the frame 1 can be rotated. The turntable 3 drives the first bevel gear 31 to rotate, and then the second bevel gear 32 drives the upper screw 33 to rotate. The screw 33 is threadedly connected to the lifting rod 34, thereby driving the mounting platform 2 to rise and adjust through the lifting rod 34.

[0032] During testing, the universal joint is placed on the mounting platform 2, and the slide blocks 12 on both sides are slid along the slide rail 11 until one end of the probe 13 contacts both ends of the universal joint, thereby measuring the length of the universal joint.

[0033] After measuring both ends of the universal joint, pull the limiting rod 24 on the base 21 outward so that one end of the limiting rod 24 disengages from the limiting groove 23 of the turntable 22, releasing the limiting on the turntable 22. This allows the mounting platform 2 to rotate and adjust its direction along the turntable 22, avoiding the need to spend time aligning the two ends of the universal joint with the probe 13 again. During the outward pulling of the limiting rod 24, the convex ring 26 will compress the return spring 25. After adjustment, the return spring 25 drives the limiting rod 24 to return to its original position, limiting and fixing the turntable 22, thus increasing the stability during measurement.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cross-shaped universal joint length measuring instrument, characterized in that, include: A frame (1) is provided with slides (12) on both sides of the top of the frame (1), and a probe (13) is provided at one end of the slides (12). The mounting platform (2) is installed at the top center of the frame (1) and is located between the slides (12) on both sides. The bottom end of the mounting platform (2) is provided with a base (21). The base (21) is provided with a rotating component, and the mounting platform (2) is rotated and adjusted by the rotating component. A turntable (3) is installed on the front outer surface of the frame (1). Inside the frame (1), a lifting assembly is provided at one end of the turntable (3) to adjust the height of the platform (2).

2. The universal joint length measuring instrument according to claim 1, characterized in that: The top of the frame (1) is fixedly installed with a slide rail (11) below the slide block (12), and the bottom of the slide block (12) is slidably connected to the slide rail (11).

3. The universal joint length measuring instrument according to claim 1, characterized in that: The rotating assembly includes a turntable (22) rotatably mounted inside the base (21), and the top of the turntable (22) is fixedly connected to the mounting platform (2).

4. The universal joint length measuring instrument according to claim 3, characterized in that: A limiting rod (24) is inserted into one side of the base (21). The outer surface of the turntable (22) is provided with several limiting grooves (23) that match one end of the limiting rod (24). A convex ring (26) is fixedly installed on the outer surface of the limiting rod (24). A reset spring (25) is sleeved on one side of the convex ring (26) on the outer surface of the limiting rod (24).

5. The universal joint length measuring instrument according to claim 1, characterized in that: The lifting assembly includes a first bevel gear (31) fixedly installed at one end of the turntable (3), and a second bevel gear (32) is meshed with one side of the first bevel gear (31).

6. The universal joint length measuring instrument according to claim 5, characterized in that: The top end of the second bevel gear (32) is fixedly mounted with a screw (33), and a lifting rod (34) is sleeved on the outer surface of the screw (33). The lifting rod (34) is threadedly connected to the screw (33), and the top end of the lifting rod (34) is fixedly connected to the bottom end of the base (21).

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